Note: Descriptions are shown in the official language in which they were submitted.
SYSTEMS FOR HANDLING FLUID FOR APPLICATION
TO AGRICULTURAL FIELDS
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims priority to U.S.
Provisional Patent Application Serial No. 62/255,091, filed on
November 13, 2015.
BACKGROUND
[0002] The field of this disclosure relates
generally to systems for handling fluid. More particularly,
this disclosure relates to systems for handling fluid for
application to agricultural fields.
[0003] The agricultural industry commonly applies
fluids, such as fertilizer, to fields during the cultivation of
crops. Nitrogen rich chemicals are typically used as
fertilizer, which is applied to soil to provide nutrients for
plants. Anhydrous ammonia, for example, is a relatively dense
nitrogen source commonly used as a fertilizer. However,
anhydrous ammonia must be maintained within a pressure range to
remain in liquid form. Additionally, anhydrous ammonia can pose
a health risk to people who inhale the anhydrous ammonia.
Therefore, anhydrous ammonia must be contained in proper
pressure vessels that are strictly regulated. For example,
regulations require the pressure vessels to be regularly
pressure tested. Pressure testing is performed by filling the
pressure vessels with water, which can cause the vessels to rust
and otherwise deteriorate over time. The deterioration causes
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the formation of particulates and other loose materials within
the pressure vessels. Sometimes, additives are added to the
fluid to enhance desirable characteristics of the fluid.
However, these additives can bond to particulates in the
pressure vessels and, thereby, increase the size of the
particulates. The particulates and other loose materials can
become mixed in the fluid stored in the pressure vessels. As a
result, when fluid application systems withdraw fluid from the
pressure vessels for application to fields, the particulates in
the fluid can cause the systems to operate inefficiently and
improperly.
[0004] Typical pressure vessels include an outlet
for withdrawing fluid from the pressure vessel. The fluid often
includes liquid and vapor. Sometimes, vapor can flow through
the outlet as liquid is withdrawn from the pressure vessel and
result in misapplication of the fluid on the field. For
example, when the pressure vessel is transported across uneven
ground, the liquid can flow away from the outlet causing vapor
to flow through the outlet and resulting in misapplication.
Some pressure vessels include sensors to detect the fluid flow.
However, these sensors typically do not detect this
misapplication because the sensors detect the vapor flowing
through the outlet. In addition, vapor in the pressure vessels
can otherwise be ingested into the application system causing
operating inefficiencies and damage to equipment. Moreover,
modern fluid application systems have increased rates of
application that exacerbate these problems.
[0005] Some fluid application systems include
strainers for removing some materials from fluid. However, the
strainers are not designed for handling volatile fluids used as
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fertilizer, such as anhydrous ammonia. Therefore, the strainers
cause operating inefficiencies, misapplications, and increased
maintenance time for the fluid application systems. For
example, the strainers are often plugged by the particulates and
additives contained in the fluids. Additionally, the strainers
are difficult to clean and can pose safety risks to the operator
when the operators have to clean the strainers,
BRIEF DESCRIPTION
[0006] In one aspect, a system for dispensing a
volatile fluid is provided. The system includes a container
defining an interior space for holding the fluid. The container
is configured to separate the fluid into a liquid and a vapor
such that at least a portion of the vapor ie disposed above the
liquid. The system also includes at least one fluid inlet
defined in the container for fluid to enter the interior space,
and at least one liquid outlet defined in the container for
fluid to exit the interior space. The at least one liquid
outlet is disposed above the at least one fluid inlet and below
a liquid reference plane defined through the container. The
system further includes at least one vapor valve connected to
the container and configured to exhaust vapor disposed above the
liquid from the container. The system also includes a sensor
and a controller. The sensor is configured to detect a level of
the liquid in the container. The controller is communicatively
coupled to the sensor and the at least one vapor valve. The
controller is configured to determine the level of the liquid
and actuate the at least one vapor valve to maintain the level
of the liquid at or above the liquid reference plane.
[0007] In another aspect, a fluid dispensing
apparatus is provided. The fluid dispensing apparatus includes
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a container defining an interior space for holding a fluid. The
container is configured to separate the fluid into a liquid and
a vapor such that at least a portion of the vapor is disposed
above the liquid. The apparatus also includes at least one
fluid inlet defined in the container for fluid to enter the
interior space, at least one liquid outlet defined in the
container for fluid to exit the interior space, and a sensor.
The at least one liquid outlet is disposed above the at least
one fluid inlet and below a liquid reference plane defined
through the container. The sensor is communicatively coupled to
a controller and configured to detect a level of the liquid in
the container. The apparatus further includes at least one
vapor valve connected to the container and configured to exhaust
vapor disposed above the liquid from the container. Actuation
of the at least one vapor valve is controlled by the controller
to maintain the level of the liquid at or above the liquid
reference plane.
[0008] In yet another aspect, a method for
dispensing a fluid from a container defining an interior space
for holding the fluid is provided. The fluid includes liquid
and vapor. The container includes an upper portion and a lower
portion. The method includes generating a flow of fluid through
the container from at least one fluid inlet toward at least one
liquid outlet such that the vapor and liquid are separated and
the vapor is disposed above the liquid. The at least one liquid
outlet is disposed above the at least one fluid inlet and below
a liquid reference plane defined through the container. The
method also includes determining a level of the liquid in the
interior space, determining if the level of the liquid is below
the liquid reference plane, and releasing vapor from at least
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one vapor valve such that the liquid level is maintained at or
above the liquid reference plane.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] FIG. 1 is a perspective view of an
embodiment of a fluid application system.
[0010] FIG. 2 is a perspective view of a portion of
the fluid application system shown in FIG. 1.
[0011] FIG. 3 is a schematic view of the fluid
application system shown in FIG. 1.
[0012] FIG. 4 is a perspective view of a filtering
system suitable for use in the fluid application system shown in
FIGS. 1 and 2.
[0013] FIG. 5 is a sectional view of the filtering
system shown in FIG. 4.
[0014] FIGS. 6-8 are side elevations of portions of
the filtering system shown in FIG. S.
= [0015] FIG. 9 is a top view of a portion of the
filtering system shown in FIG. 5.
[0016] FIG. 10 is a perspective view of an
embodiment of a manifold of a valve assembly shown in FIG. 4.
[0017] FIG. 11 is a side elevation of another
embodiment of a filtering system suitable for use in the fluid
. application system shown in FIGS. 1 and 3.
[0018] FIGS. 12-13 are perspective views of
portions of the filtering system shown in FIG. 11.
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[0019] FIG. 14 is a perspective view of another
embodiment of a filtering system suitable for use in the fluid
application system shown in FIGS. 1 and 3.
[0020] FIG. 15 is a schematic cross-section of the
filtering system shown in FIG. 14.
[0021] FIG. 16 is a perspective view of a portion
of the filtering system shown in FIG. 14.
DETAILED DESCRIPTION OF THE DRAWINGS
[0022] Referring now to the drawings and in
particular to FIGS. 1-3, one embodiment of a volatile liquid
fertilizer application system (broadly, a fluid application
system) is designated in its entirety by the reference number
100. The fluid application system 100 includes a motorized
vehicle 102, a fluid storage tank 104, and a distribution
manifold 106. The motorized vehicle 102 may be any machine that
enables the fluid application SyStem 100 to function as
described herein. In the exemplary embodiment, the motorized
vehicle 102 is a tractor. In suitable embodiments, one or more
components of the fluid application system 100 may be
incorporated into the motorized vehicle 102 without departing
from some aspects of this disclosure. In the exemplary
embodiment, the fluid storage tank 104 and the distribution
manifold 106 are disposed an a wheeled chassis 108 that is towed
behind the motorized vehicle 102.
100231 In the exemplary embodiment, the fluid
storage tank 104 includes a sidewall 110 defining an interior
space. In suitable embodiments, the fluid storage tank 104 may
have any shape that enables the fluid application system 100 to
function as described herein. In the illustrated embodiment,
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the sidewall 110 forms a cylinder having closed ends. With
reference to the orientation shown in FIG. 1, the fluid storage
tank 104 has an upper portion 114, a middle portion 116, and a
lower portion 118. The middle portion 116 is disposed between
the upper portion 114 and the lower portion 118. An outlet 120
and an inlet 122 are disposed in the upper portion 114. In
suitable embodiments, the fluid storage tank 104 may include any
number of outlets and inlets in any portions of the fluid
storage tank 104 without departing from some aspects of this
disclosure,
[0024) In suitable embodiments, fluid within the
interior space includes vapor and liquid. Suitably, the fluid
is separated such that at least a portion of the vapor is
disposed above the liquid. A sensor 124 senses characteristics
of the fluid storage tank 104, such as the level of the liquid
in the fluid storage tank and sends the information to a
controller 126. As will be described in more detail below, the
controller 126 can determine diagnostic data, such as defining a
liquid plane 230 (FIG. 5) and relating the level of the liquid
to the liquid plane. Based at least in part on the diagnostic
data, the controller 126 can control components of the fluid
application system 100. In one embodiment, the fluid
application system 100 includes at least one vapor valve for
controlling the level of the liquid.
[0025] During operation, the fluid storage tank 104
may contain any type of fluid for distribution by the fluid
application system 100. For example, the fluid storage tank 104
may store a volatile fluid intended to be applied to fields for
agricultural purposes. A common fluid used for agricultural
purposes is anhydrous ammonia, which is applied to fields
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primarily as a fertilizer to increase the nutrient level of
soils. The anhydrous ammonia includes at least some gaseous
substance and, therefore, is maintained at a carefully
controlled pressure to control the gaseous properties. In the
exemplary embodiment, the fluid storage tank 104 is configured
to store and maintain the fluid at a desired pressure as fluid
flows out of the fluid storage tank. The fluid application
system 100 includes at least one pump 130 connected to the fluid
storage tank 104 to facilitate maintaining the fluid in the
fluid storage tank at the desired pressure.
[0026] In the exemplary embodiment, the fluid
storage tank 104 is fluidly connected to a filtering system 200
and the distribution manifold 106 by a fluid line 232. Disposed
between the filtering system 200 and the fluid storage tank 104
is a quick connect 134. A valve or metering component 136 is
disposed downstream from filtering system 200. In suitable
embodiments, the quick connect 134, valve 136, and filtering
System 200 may be coupled to any portions of the fluid
application system 100. For example, in some suitable
embodiments, the filtering system 200 is disposed adjacent the
fluid storage tank 104. Additionally, in some suitable
embodiments, any of the quick connect 134, valve 136, and
filtering system 200 may be omitted without departing from some
aspects of this disclosure. In the exemplary embodiment, the
quick connect 134 facilitates the fluid storage tank 104 being
connected to and removed from the fluid line 132. The valve 136
controls fluid flow through the fluid line 132. For example,
the valve 136 can be positionable between a closed position
where fluid is inhibited from flowing through the fluid line 132
and an opened position where fluid is allowed to flow through
the fluid line. In suitable embodiments, the valve 136 may be
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any valve that enables the fluid application system 100 to
function as described herein. In the exemplary embodiment, the
valve 136 is a ball valve. In suitable embodiments, any
additional components may disposed along the fluid line 132 that
enable the fluid application system 100 to function as described
herein. For example, in some embodiments, any of the following
are fluidly connected to fluid storage tank 104 and filtering
system 200: a shutoff valve, a line breakaway, an excess flow
valve, and a reverse flow valve. In the exemplary embodiment,
the fluid application system 100 can detect malfunctions in any
of the components along the fluid line 132 that may cause
misapplication or improper operation.
[0027] The filtering system 200 is configured to
filter and remove at least some material from the fluid, as will
be described in more detail below. The filtering system 200 may
remove materials of any type from the fluid. For example, in
some embodiments, the filtering system 200 is configured to
remove ferrous material from the fluid. In the exemplary
embodiment, the filtering system 200 is connected to the fluid
storage tank 104 adjacent the outlet 120 such that the filtering
system removes material from fluid flowing out of the fluid
storage tank 104 prior to the fluid flowing through the rest of
the fluid application system 100. The filtering system 200 is
mounted to the fluid application system 100 by a mounting
bracket 202. In suitable embodiments, the filtering system 200
may be coupled to any portion of the fluid application system
100 without departing from some aspects of this disclosure.
0028] After filtering, the fluid is directed out
Of the filtering system 200 and through the fluid line 132 into
the distribution manifold 106. As shown in FIGS, 1 and 2, the
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distribution manifold 106 includes a plurality of supply lines
138 each connected to a dispensing tube 140 for injecting the
fluid into a soil. The distribution manifold 106 distributes
the fluid to the dispensing tubes 140 for emitting the fluid
from the fluid application system 100. In suitable embodiments,
the fluid application system 100 may include any number of
dispensing tubes 140. In some embodiments, as the fluid is
emitted from the dispensing tubes 140, the vehicle 102 moves the
fluid application system 100 along a desired path for fluid
application, such as rows 146 of a field 148. In the exemplary
embodiment, the dispensing tubes 140 are connected to or
positioned behind a soil preparation mechanism 142, such as a
knife or plow, that contacts the soil as the dispensing tubes
140 dispense fluid onto the soil, as best seen in FIG. 2, The
soil preparation mechanisms 142 are connected to a boom 143,
which is connected to and pulled behind the vehicle 102.
[0029] In some embodiments, vapor release tubes,
described in more detail herein, may be connected to the soil
preparation mechanism 142 and/or the dispensing tubes 140. The
vapor release tubes may discharge vapor from the filtering
system 200 to the ground. For example, the vapor release tubes
can be configured to release potentially harmful vapors, such as
vapors from anhydrous ammonia, directly into the ground.
Accordingly, the vapor release tubes prevent vapors from being
released into the atmosphere. In addition, any residual
treatment material within the vapor is applied directly to the
soil.
[00301 In the embodiment shown in FIG. 3, the fluid
, application system 100 includes the controller 126 and an
operator interface 144 connected to the controller. In suitable
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embodiments, the controller 125 may be any controller that
enables the fluid application system 100 to function as
described herein. The controller 126 may be connected to a
plurality of sensors such that the controller 126 receives
signals from the sensors. The sensors may send signals that
include information relating to any characteristics of the fluid
application system 100. For example, the sensors may send
information including, without limitation, pressures,
temperatures, duty cycles, densities, valve positions,
geographic position system (GPS) data, and any other suitable
characteristics of the fluid application system 100.
[0031] In suitable embodiments, the controller 126
may perform any functions based On the signals received from the
sensors. For example, the controller 125 may perform at least
one of the following functions: triggering an indicating alarm,
stopping flow through the outlet 120, and causing liquid to
bypass the outlet 120. In some embodiments, the controller 126
receives the information and can determine diagnostic data based
on the information. The controller 126 may use additional
information such as saturation curves and enthalpy charts, to
determine the diagnostic data. In suitable embodiments, the
diagnostic data may relate to any operational status of the
fluid application system 100. The operational status may be any
characteristics of the fluid application system 100 and/or fluid
in the fluid application system. For example, the controller
126 may determine the amount of vapor released through a vapor
valve 214 (FIG. 4) of the fluid application system 100.
[0032] In some embodiments, the controller 126 may
also generate spatial maps of the diagnostic data based on
determined positions of the system. In some embodiments, for
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example, the controller 126 may receive determined positions
from a GPS device communicatively connected to the controller
126, and generate a spatial map based on the GPS positions. The
spatial map, for example, can relate the diagnostic data, such
as vapor release rates and error readings, to corresponding
positions of the fluid application system 100 at which the
diagnostic data was recorded.
[0033] The diagnostic data can be used to determine
and troubleshoot potential issues with the fluid application
system 100. For example, relatively high or low rates of vapor
release may indicate a blockage in the system. The diagnostic
data can be used to recognize and correct the issues in real
time and, thereby, prevent or minimize misapplication and/or
damage to the fluid application system 100.
[0034] In the exemplary embodiment, the controller
126 sends the diagnostic data to the operator interface 144 for
interpretation by an operator. The operator interface 144 may
be any suitable interface that allows the operator to receive
the diagnostic data. For example, the operator interface 144
may include a monitor mounted in the vehicle 102 to display the
. diagnostic data for the operator. In further embodiments, the
operator interface 144 may be a mobile computing device
wirelessly connected to the controller 126. In suitable
embodiments, the operator interface 144 may allow the operator
to input values and/or to control components of the fluid
application system 100. The operator interface 144 may be
coupled to the controller 126 such that commands from the
operator interface are relayed to the controller 126 and/or
other components of the fluid application system 100.
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[0035] In suitable embodiments, the controller 126
is connected to and configured to send signals to and receive
signals from any components of the fluid application system 100.
For example, the controller 126 may be connected to and
configured to send signals to and receive signals from the
filtering system 200, fluid storage tank 104, and/or
distribution manifold 106. The signals may relate to
controlling operation of any of the components connected to the
controller 126. In some embodiments, the controller 126
controls operation of components based at least in part on
inputs of the operator. In further embodiments, the controller
126 may automatically control some operations of the fluid
application system 100 based at least in part on the determined
diagnostic data.
[00361 The controller 126 may include a wireless
transceiver that enables controller 126 to connect to devices on
a wireless network, e.g., Wi-Fi. Optionally, the controller 126
may include a port to allow for wired connection to devices in
addition to or in place of the wireless transceiver.
[0037] With reference to FiGs. 4 and 5, the
filtering system 200 includes a container 204 defining an
interior space 206 and a collection mechanism 208 disposed
within the interior space of the container. The container 204
is configured to hold an amount of fluid, i.e., a reservoir, in
the interior space 206. While in the exemplary embodiment the
container 204 is configured to bold a volatile fluid, the
container may be configured to hold any fluid without departing
from some aspects of this disclosure. The container 204
includes an outlet 210 for fluid to flow out of the interior
space 206 and an inlet 212 for fluid to enter the interior space
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206. In suitable embodiments, the filtering system 200 may have
any outlets 210 and inlets 212 that enable the filtering system
200 to function as described herein.
[0038] The container 204 may be constructed from
any suitable materials. For example, the container 204 may be
constructed from a stainless steel pipe such as a schedule 20
stainless steel pipe having an 8-inch diameter. In alternative
embodiments, the filtering system 200 may include any container
that enables the filtering system 200 to function as described
herein.
0039] As shown in FIGS, 4-5, the filtering system
200 includes a plurality of the inlets 212 for fluid to enter
the container 204 and a plurality of the outlets 210 for fluid
to exit the container 204. In the illustrated embodiment, the
container 204 includes four inlets 212 and four outlets 210.
Accordingly, the filtering system 200 may be connected in fluid
communication with a plurality of fluid storage tanks 104 (shown
in FIG. 1), For example, the filtering system 200 may be
connected to the fluid storage tanks 104 such that each fluid
storage tank 104 is connected to two inlets 212 and two outlets
210. Accordingly, the filtering system 200 facilitates reducing
downtime of the fluid application system 100 by allowing use of
multiple fluid storage tanks 104 simultaneously, thereby
enhancing the effective capacity of the fluid application
system. In addition, the inlets 212 and the outlets 210 reduce
the possibility of fluid flow through the filtering system 200
being obstructed.
[0040] The inlets 212 are positioned such that
fluid enters the interior space 206 and flows towards the
outlets 210. In the exemplary embodiment, the inlets 212 are
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positioned below the outlets 210 such that fluid flows upwards
towards the outlets. The upward flow of fluid facilitates the
collection mechanism 208 collecting material as described
further below. In alternate embodiments, the filtering system
200 may include any number, including one, of the inlets 212.
In some embodiments, the flow rate of the fluid may be a
velocity which is less than the percolation speed of vapor
entrained within the fluid, and the downward velocity of solid
material due to gravitational forces. As a result, vapor will
percolate above the liquid and dense, and solid material will
settle below the liquid.
[0041] The filtering system 200 includes at least
one vapor valve 214 for controlling the liquid level in the
interior space 206 and the fluid flow through the filtering
system 200. Each of the vapor valves 214 is positionable
between a closed position and an opened position. The opened
position allows vapors to be exhausted from the interior space
206, which facilitates fluid flowing into the interior space.
The closed position inhibits vapors from being exhausted from
the interior space 206 through the vapor valve 214. In suitable
embodiments, each of the vapor valve 214 may be positionable in
intermediary positions to vary the amount of vapors exhausted
from the filtering system 200. In the exemplary embodiment,
each of the vapor valves 214 is a pulse width modulated solenoid
valve_ In suitable embodiments, the filtering system 200 may
comprise any number of valves of any type that enable the
filtering system 200 to function as described herein.
[0042] In reference to FIG. 4, the illustrated
embodiment includes a valve assembly 288 connected to a top wall
218 of the container 204. The valve assembly 288 includes a
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plurality of the vapor valves 214. In the illustrated
embodiment, each of the vapor valves 214 are pulse width
modulated solenoid valves that are controlled by the controller
126 (shown in FIG. 3). Rach valve 214 of the valve assembly 288
is individually controlled by the controller 126 and may be
positioned between an open position and a closed position. In
alternative embodiments, the filtering system 200 may include
any valve that enables the filtering system 200 to function as
described herein.
[0043] In some embodiments, the vapor valves 214
may be connected directly to the container 204. In the
illustrated embodiment, each vapor valve 214 is connected to the
container 204 by a manifold 289 that is in fluid communication
with the interior space 206. In other embodiments, the vapor
valves 214 may be connected to the container 204 in any manner
that enables the filtering system 200 to function as described
herein.
[0044] The vapor valves 214 are received in the
manifold 289 such that the vapor valves 214 are fluidly
connected to ports 282 in the top wall 218 and are in fluid
communication with the interior space 206 via an internal
passage 291 (FIG. 10) defined by the manifold 289. Accordingly,
the vapor valves 214 are adjacent an upper portion 234 of the
container 204 and are configured to exhaust vapor that is
located in the upper portion 234. In alternative embodiments,
the vapor valves 214 may be connected to any portions of the
filtering system 200.
[0045] The controller 126 (shown in FIG. 3) is
configured to operate the vapor valves 214 in a sequence to
regulate the rate and amount of vapor that is released from the
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filtering system 200. For example, the controller 126 may
sequentially activate the vapor valves 214 from closed to open
positions to increase the rate at which vapor is exhausted from
the filtering system 200. Accordingly, the valve assembly 288
may be used to control the liquid level of fluid within the
filtering system 200. Specifically, the release or exhaust rate
of vapor from the interior space 206 may be increased or
decreased to adjust the liquid 'level. For example, a first
valve 214 may be opened to release vapor at a first exhaust
rate. If additional vapor release is desired, a second valve
214 may be opened to increase the rate of vapor release to a
second exhaust rate. Likewise, third and fourth valves 214 may
be sequentially opened to increase the exhaust rate to a third
and fourth exhaust rate, respectively. Alternatively, the vapor
valves 214 may be closed in succession to decrease the release
of vapor from the interior space 206. In some embodiments, the
vapor assembly 288 may be controlled based at least in part on
sensor data such as the rate of fluid flow and the liquid level
of the fluid. In other embodiments, the valve assembly 288 may
be controlled in any manner that enables the filtering system
200 to function as described herein. For example, in some
.
embodiments, the vapor valves 214 may be manually controlled.
[0046] In some embodiments, the filtering system
200 is configured for handling a volatile nutrient-rich fluid
for use as an agricultural fertilizer. Accordingly, the =
filtering system 200 can include at least one safety device
configured for the safe and effective handling of the fluid.
The at least one safety device can include at least one of the
following: a vent valve, a hydrostatic relief valve, a pressure
gauge, an overflow protection device, and a hose breakaway
device. =
=
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[0047] In suitable embodiments, the container 204
may include any walls of any shape that enable the filtering
system 200 to function as described herein. In the exemplary
embodiment, in reference to the orientation shown in FIG. 5, the
container includes the top wall 218, a bottom wall 220, and a
sidewall 222 extending between the top wall 218 and the bottom
wall 220. In the illustrated embodiment, the sidewall 222 forms
a substantially cylindrical shape, the top wall 218 is a
circular plate, and the bottom wall 220 is opposite the top wall
and forms an inverted cone. The inlet 212 and the outlet 210
are defined by the sidewall 222 intermediate the top wall 218
and the bottom wall 220. In the illustrated embodiment, the
outlet 210 is disposed between the top wall 218 and the inlet
212, and the inlet 212 is disposed adjacent the bottom wall 220.
In suitable embodiments, the inlet 212 and the outlet 210 may be
disposed in any portion of the container 204 without departing
from some aspects of this disclosure.
[0048] The container 204 is configured to contain a
volume of fluid and/or material within the interior space 206.
In suitable embodiments, the container 204 may contain any
volume that enables the filtering system 200 to function as
described herein. For example, in some embodiments, the
container 204 may contain a volume in a range of about 1 gallon
to about 15 gallons. In further embodiments, the container 204
may contain a volume in a range of about 5 gallons to about 10
gallons. In the illustrated embodiment, the container 204
contains a volume of approximately 6 gallons. The volume of the
container 204 reduces the frequency that filtering system 200 is
required to be cleaned and/or serviced. For example, in some
embodiments, the container 204 has a volume that allows the
fluid application system 100 (shown in FIG. 1) to apply fluid to
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an entire field without the filtering system 200 being cleaned
and/or serviced. In addition, the filtering system 200 reduces
operator exposure to potentially hazardous materials and reduces
the time for treating fields.
[0049] With reference now to FIG. 4, the outlets
210 are disposed a distance 224 from the top wall 218. In
suitable embodiments, the outlets 210 and inlets 212 may be
disposed any distances from each other and from the top wall 218
that enable the filtering system 200 to function as described
herein. In some suitable embodiments, the distance 224 may be
between about 5 inches and about 20 inches or between about 10
inches and about 15 inches. In the illustrated embodiment, the
distance 224 is approximately 12.5 inches. In suitable
embodiments, the inlets 212 are disposed a distance 226 below
the outlets 210. In some suitable embodiments, the distance 226
may be between about 5 inches and about 20 inches or between
about 10 inches and about 15 inches. In the illustrated
embodiment, the distance 226 is approximately 12 inches. The
distances 224, 226 are measured from respective centers of the
outlets 210 and the inlets 212.
[0050] In suitable embodiments, the outlets 210 and
the inlets 212 may have any shapes and sizes that enable the
filtering system 200 to function as described herein. In the
illustrated embodiments, each of the outlets 210 and the inlets
212 have a circular shape with a diameter 228. In some suitable
embodiments, the diameter 228 may be in a range between about
0.25 inches and about 5 inches or about 1 inch and about 3
inches. In the exemplary embodiment, the diameter 228 is
approximately 2 inches. While in the exemplary embodiment all
of the outlets 210 and the inlets 212 have similar shapes and
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sizes, any of the outlets 210 and the inlets 212 may have
different shapes and/or sizes without departing from some
aspects of this disclosure.
[0051] Also, in suitable embodiments, any suitable
fluid lines may be connected to the outlets 210 and the inlets
212. For example, the fluid lines may be about 1 inch or about
1,25 inches or about 1.5 inches. In some embodiments, a bushing
or reducer may be used to connect the fluid lines to the outlets
210 and the inlets 212.
[0052] In some embodiments, the filtering system
200 includes at least one injection port 216 for injecting
material into the interior space 206. In addition, the
filtering system 200 may include an injection device 217 that
extends through the injection port 216 and is configured to
dispense material into interior space 206. Suitably, the
injection port 216 and the injection device 217 are positioned
and configured such that material injected through the injection
device 217 is substantially uniformly distributed throughout the
interior space 206 and evenly available to the plurality of
outlets 210. For example, in the illustrated embodiment, the
injection port 216 is in the top wall 218 and the injection
device 217 extends through the top wall 218. Accordingly,
material injected by the injection device 217 may bypass a
filter included in the filtering system 200. As a result, the
amount of material required to treat the fluid may be reduced.
In the illustrated embodiment, the injection device 217 is
connected to the float sensor 264 and is positioned along a
center axis of the filtering system 200. As a result, material
injected by the injection device 217 is Evenly distributed
within the interior space 216. In suitable embodiments, the
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Date Regue/Date Received 2024-04-16
filtering system 200 may include any number of the injection
ports 216 and injection devices 217. In some embodiments, the
injection port 216 and/or injection device 217 may be omitted
without departing from some aspects of this disclosure.
[0053] The injection device 217 may be used to
inject additives into the fluid within the interior space 206.
For example, in some embodiments, the additives include
stabilizers that neutralize pests that may degrade the fluid
applied by the fluid application system 100 (shown in FIG. 1).
In some embodiments, at least a portion of the additives may be
added to the fluid in other portions of the fluid application
system 100, such as the fluid storage tank 104 (shown in FIG.
1).
[0054] In operation, fluid within the interior
space 206 includes vapor and liquid separated such that at least
a portion of the vapor is disposed above the liquid in reference
to the orientation of the container 204 shown in FIG. 5. A
sensor senses the level of the liquid in the container 204 and
sends the information to the controller 126. The controller 126
can deteiwine diagnostic data, such as defining a liquid plane
230 and relating the level of the liquid to the liquid plane.
In the exemplary embodiment, the liquid plane 230 is defined
through a portion of the container 204 above the outlets 210.
Suitably, the level of the liquid is maintained at or above the
liquid plane such that the liquid is available to be dispensed
through the outlets 210. In the exemplary embodiment, the vapor
valves 214 of the filtering system 200 facilitate controlling
the level of the liquid within the interior space 206. The
controller 126 controls the vapor valves 214 such that vapor is
released through the vapor valves at a rate sufficient to
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Date Regue/Date Received 2024-04-16
maintain the liquid level above the liquid plane. As described
in more detail below, the controller 126 may control the vapor
valves 214 based on infoLmation received from at least one
sensor connected to the controller 126. For example, the
controller 126 may control one or more of the vapor valves 214
based on the liquid level sensed by a sensor within the interior
space 206. In some embodiments, one or more of the vapor valves
' 214 may be directly responsive to a sensor without input from
.the controller 126. For example, the vapor valves 214 may be
pulse width modulated solenoid valves that are connected to a
float switch such that the valves moves between opened and
closed positions as the float switch moves with the liquid
level.
[0055] In some embodiments, the controller 126
sends a signal to one or more of the vapor valves 214 to move
the valves to the opened position when the controller determines
vapor needs to be released to maintain a desired position of the
liquid level. when the liquid level is determined to be at a
desired position, the controller 126 may send a signal to one or
more of the vapor valves 214 to move the valves to the closed
' position. In some embodiments, the controller 120 may send
signals to one or more of the vapor valves 214 to move the
valves 214 to intermediary positions to maintain the liquid
level at the desired position.
[0056] The collection mechanism 208 is disposed
within the interior space 206 intermediate the inlet 212 and the
outlet 210. As fluid flows through the interior space 206
towards the outlet 210, the collection mechanism 208 is
configured to collect materials carried by the fluid. For
example, the collection mechanism 208 may be configured to
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Date Regue/Date Received 2024-04-16
collect ferrous materials in the fluid. In the exemplary
embodiment, the collection mechanism 208 is configured to at
least partially release collected material in response to a
signal from the controller 126. ln some suitable embodiments,
the controller 126 may be configured to send a signal to the
collection mechanism to release at least some of the collected
material when one or move vapor valves 214 is moved to the
closed position to shut off fluid flow through the interior
space 206. As a result of releasing material, the collection
mechanism 208 is at least partially cleared and ready to collect
additional material. In some embodiments, the collection
mechanism 208 resumes collecting material when one or more of
the vapor valves 214 is moved to the opened position. In
further embodiments, the collection mechanism may be configured
to collect material upon receiving a signal from the controller
and/or after cycling through a release state for a predetermined
time period.
[0057] In
operation, the fluid flows from the inlet
212 towards the outlet 210 and carries materials. As the
materials pass the collection mechanism 208, which is at least
partially disposed between the inlet 212 and the outlet 210, the
materials are attracted to and retained by the collection
mechanism. The collection mechanism 208 is configured to
release material such that the material moves within the
container 204 and/or is ejected from the container at desired
times. For example, the collection mechanism 208 may be
configured to release material when the fluid flow stops or
slows. In some embodiments control of collection mechanism 208
is coordinated with control of valve 136 (shown in FIG. 1) such
that collection mechanism 208 releases material when valve 136
slows or stops fluid flow through filtering system 200. The
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Date Regue/Date Received 2024-04-16
released material may move to a portion of the interior space
206 below the inlet 212 such that the materials are not swept up
in the fluid when the fluid flow increases in velocity.
[0058] In suitable embodiments, the collection
mechanism 208 may include any components that enable the
collection mechanism 208 to function as described herein. In
the exemplary embodiment, the collection mechanism 208 includes
an electromagnet 232 for attracting ferrous material. The
electromagnet 232 is connected to a power supply (not shown)
which supplies an electric current to the electromagnet 232 to
generate magnetic attractive forces and collect the ferrous
material. The current supplied to the electromagnet 232 may be
controlled by the controller 126 Such that the electromagnet 232
can be activated and deactivated, and/or the strength of the
magnetic field generated by the electromagnet 232 can be
modulated. Accordingly, the collection mechanism 208 can be
cycled through periods of collection and release by controlling
the current through the electromagnet 232. In some embodiments,
the electric current may be weakened for periods of time such
that the electromagnet releases some material, while some
material may be retained by the electromagnet. In the exemplary
embodiment, the electromagnet 232 comprises a substantially
cylindrical body projecting upwards from the bottom wall 220
towards the top wall 218. Suitably, the electromagnet 232
extends at least partially above the inlet 212 to facilitate the
, electromagnet collecting material from fluid that flows into the
interior space 206 through the inlet 212. In suitable
embodiments, the electromagnet 232 may be disposed anywhere in
the interior space 206 without departing from some aspects of.
this disclosure.
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[0059] In the exemplary embodiment, the controller
126 is configured to determine, based on the current and voltage
flowing through the electromagnet 232, when the collection
mechanism 208 has collected a specified amount of material. The
current and voltage decreases as the collection mechanism 208
collects material. Accordingly, the controller 126 correlates
the current and voltage to the amount of material on the
collection mechanism 208. When the current and/or voltage
reaches a set value, the controller 126 determines the
collection mechanism 208 has collected a predetermined amount of
material and can respond accordingly. For example, when the
controller 126 determines that the current and voltage flowing
through the electromagnet 232 is insufficient to collect
additional material, the controller may cause the collection
mechanism 208 to be cleared and/or indicate to the operator that
the collection mechanism needs to be cleared. In some
embodiments, the collection mechanism 208 may include a sensor
configured to detect the amount of current and voltage through
the electromagnet. For example, in some embodiments, the
collection mechanism includes a shunt resistor for determining
current through a circuit.
(0060] In suitable embodiments, the released
material is inhibited from escaping the interior space 206. For
example, in some embodiments, released material gathers in a
storage area such that the material can be easily removed and
cleared. In other embodiments, the released material may be
directly exhausted from the fluid application system 100. For
example, the collected material may be discharged from a port
(not shown) onto the ground below the fluid application system
100. In some embodiments, the filtering system 200 may include
an actuator that is controlled by an operator for manually
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Date Regue/Date Received 2024-04-16
removing material from the fluid application system 100. In
further embodiments, the filtering system 200 may be configured
to automatically release material from the fluid application
system to the surrounding environment,
[00611 With reference to the orientation shown in
FIG. 5, the container 204 has the upper portion 234, a middle
portion 236, and a lower portion 238. The middle portion 236 is
disposed between the upper portion 234 and the lower portion
238. In suitable embodiments, the upper portion 234, the middle
portion 236, and the lower portion 238 of the container 204 may
be poeitionable in relation to each other to facilitate removing
the collected material from the interior space 206 and/or
performing maintenance on the container 204 and collection
mechanism 208, For example, the upper portion 234 and/or the
lower portion 238 of the container 204 may be positionable in
relation to middle portion 236 of the container such that the
interior space 206 can be accessed. The upper portion 234, the
middle portion 236, and the lower portion 238 may be connected
by any suitable coupling mechanisms that enable the container
204 to function as described herein. For example, a hinge may
connect at least two of the upper portion 234, the middle
portion 236, and the lower portion 238 together such that the
portions pivot between an opened position and a closed position.
[0062] In the illustrated embodiment, the top wall
218 may be removed from the sidewall 222 to access the interior
space 206. Accordingly, the interior space 206 can be accessed
without disconnecting the filtering system 200 from other
components of the fluid application system 100 (shown in FIG, 1)
such as fluid lines. Asa result, the time to service and/or
clean the filtering system 200 is reduced. In addition, the
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Date Regue/Date Received 2024-04-16
operator exposure to fluid, such as when the fluid lines are
disconnected and reconnected to filtering system 200, is
reduced. Alternatively, or in addition, the lower portion 238
may be disconnected from the middle portion 236, such as by
unscrewing the lower portion 238 from the middle portion 236, to
provide access to the interior space 206.
[0063] Ae shown in FIG. 4, in the illustrated
embodiment, the lower portion 238 has an at least partially
angled portion 240. As the angled portion 240 extends from the
middle portion 236 to the bottom wall 220, the angled portion
angles toward the centerline of the container 204. In suitable
embodiments, the angled portion 240 extends any suitable
distance. For example, the angled portion 240 may extend a
distance 242 in the direction of the centerline of the container
204 in a range between about 1 inch and about 10 inches or
between about 2 inches and about 5 inches. In the illustrated
embodiment, the angled portion 240 extends a distance 242 of
approximately 3.5 inches parallel to the centerline of the
container 204.
[0064] The filtering system 200 further includes a
filter screen 244 to facilitate the removal of material from
fluid in interior space 206, In suitable embodiments, the
filter screen 244 is a perforated sheet spaced from the sidewall
222 and disposed intermediate the inlets 212 and the outlets
210. The filter screen 244 is configured such that fluid can
flow through the perforations in the filter screen. As the
fluid flows through the perforations, the material in the fluid
is retained against the filter screen 244, which facilitates
removal of the material from the fluid. In some embodiments,
when the fluid flow decreases in velocity, the material may move
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Date Regue/Date Received 2024-04-16
away from the filter screen 244 and may gather in a portion of
the interior space 206 where the material is retained when fluid
flow resumes and/or may be ejected from the interior space. In
some embodiments, at least some of the material may be retained
against the filter screen until a cleaning operation is
performed.
[0065] Suitably, the filter screen has a thickness
of between about 0.7 mm (0.03 in.) and about 6.5 mm (0.26 in.).
In the illustrated embodiment, the filter screen has a thickness
of approximately 1.6 ram (0,06 in.). Suitably, the filter screen
has perforations with widths of between about 1.6 mm (0.06 in.)
and about 26 ram (1 in.). In the illustrated embodiment, the
filter screen has perforations with widths of approximately 3.6
mm (0.1 in.) In suitable embodiments, the filter screen 244 is
any material that enables the filtering system 200 to function
as described herein. In the exemplary embodiment, the filter
screen 244 is a material suitable to withstand the properties of
a volatile fluid such as anhydrous ammonia. For example, the
filter screen 244 may be plastics, metals, and combinations
thereof. In the illustrated embodiment, the filter screen 244
is stainless steel. In suitable embodiments, a filter media is
disposed adjacent the filter Screen 244 to facilitate removing
material from the fluid. The filter media may be any filter
media that enables the filtering system 200 to function as
described herein. For example, the filter media may be
plastics, fibrous material, granular material, and combinations
thereof. In the example embodiment, the filter media includes a
polypropylene or nylon bag having relatively fine openings,
e.g., openings having a width of less than approximately 100
microns.
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Date Regue/Date Received 2024-04-16
[0066] The filter screen 244 and the filter media
are configured to facilitate collection and removal of
materials. Suitably, the filter screen 244 and the filter media
may be shaped to direct the materials in a desired direction.
For example, the filter screen 244 and/or the filter media may
be cone-shaped such that material is directed to the center of
the filter screen 244 and/or the filter media. In suitable
embodiments, the filter screen 244 and the filter media may have
any shapes that enable the filtering system 200 to function as
described herein.
L0067] As shown in FIG. 5, a separator or baffle
248 is disposed between the filter screen 244 and the sidewall
222 of the container 204. The separator 248 facilitates
separating the fluid into liquid and vapor. In the exemplary
embodiment, as shown in FIG. 6, the separator includes a wall
250 that is substantially impervious to fluid, a perforated
portion 252 that is at least partially open for fluid to flow
= through, and a lip 254 extending between the wall 250 and the
container 204. The perforated portion 252 extends between the
wall 250 and the upper portion 234 and supports the wall 250.
The separator 248 defines an inner space for channeling fluid.
While in the illustrated embodiment the separator 248 has a
cylindrical shape, it is understood that the separator may have
any shape that enables the separator to function as described
herein. In suitable embodiments, the separator may be made from
any material that enables the separator 248 to function as
described herein. In the illustrated embodiment, the separator
248 is made of 16-gage steel.
[0068] In operation, fluid flow is directed to the
inner space of the separator 248 and channeled within the wall
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250. As the fluid flows through the inner space of the
separator 248, the velocity is decreased and the fluid is
separated into liquid and vapor because the vapor rises at a
faster rate than the liquid. When fluid reaches the perforated
portion 252, the fluid flows through the openings in the
perforated portion. The liquid flows along the exterior of the
wall 250 and is, thereby, directed to the outlets 210. The
vapor remains in the upper portion 234 of the container 204. In
suitable embodiments, the separator 248 may have any solid and
perforated portions and/or be configured in any manner without
departing from some aspects of this disclosure.
[0069] In reference to FIG. 6, the perforated
portion 252 has openings that cover a percentage in a range
between about 50 % and about 90 t of the perforated portion. In
the exemplary embodiment, openings cover approximately 80 116 of
the perforated portion 252. In some suitable embodiments, the
wall 250 has a height 258 in a range between about 5 inches and
about 25 inches or between about 10 inches and about 20 inches.
In the exemplary embodiment, the wall 250 has the height 258 of
approximately 15 inches. In some suitable embodiments, the
perforated portion 252 has a height 259 in a range between about
1 inch and about 25 inches or between about 4 inches and about
inches. In the exemplary embodiment, the perforated portion
252 has the height 259 of approximately 6.5 inches.
[0070] In suitable embodiments, the filtering
system 200 may include any number of sensors. The sensors may
be any devices for sensing a characteristic of the filtering
system 200, For example, the sensors may include at least one
of the following: a float, a capacitive device, a pressure
sensor, a temperature sensor, a density sensor, a valve position
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Date Regue/Date Received 2024-04-16
sensor, a valve voltage sensor, a valve current sensor, a valve
duty cycle sensor, a valve orifice measurement device, a flow
sensor, and a flow switch. The sensore may be connected to the
controller 126 such that the sensors send signals to and receive
signals from the controller. The signals may include
information relating to any characteristics of the filtering
system 200 such as, without limitation, pressures, temperatures,
duty cycles, densities, valve positions, geographic position
system (GPS) data, and any other suitable characteristics of the
filtering system 200.
[0071] For example, in the illustrated embodiment,
the filtering system 200 includes a first pressure sensor 260
and a second pressure sensor 262. The first and second pressure
sensors 260, 262 are connected to and send signals to the
controller 126. The signals can include information relating to
the pressure in interior space 206. The first pressure sensor
260 is positioned downstream from the outlet 210 and configured
to measure a pressure of the fluid downstream from the outlet.
The second pressure sensor 262 is positioned upstream from the
outlet 210 and configured to measure a pressure upstream from
the outlet. As a result, controller 126 can determine a
pressure difference between fluid upstream from the outlet 210
and fluid downstream from the outlet. Based at least in part on
the sensed pressures and/or the determined pressure difference,
the controller 126 can determine whether a substantial amount of
liquid is disposed above the outlets 210 and can perform a
function, as described in detail above. In some suitable
embodiments, the sensed pressures may facilitate determining
other characteristics of the filtering system 200, such as flow
rate through interior space 206.
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Date Regue/Date Received 2024-04-16
[0072) As shown in FIG. 5, the filtering system 200
further includes a float sensor 264. The float sensor 264
includes a float 266 and a support 268, which are shown
individually in FIGS. 7 and 8, respectively. The float 266 is
sufficiently buoyant to float on the surface of liquid and is
movable in relation to the top wall 218. Accordingly, during
operation of the filtering system 200, the float 266 is
positioned on the surface of liquid within the interior space
206 and can be used to determine the liquid level. The float
266 is rigidly attached to the support 268 such that the support
moves with the float. Accordingly, the liquid level may be
determined by the position of the support 268 and/or float 266 in
relation to the top wall 218. In some embodiments, the float
sensor 264 may include mechanisms for automatically sensing the
position of the support 268 and/or float 266 in relation to the
top wall 218.
10073) As shown in FIG. 7, the support 268 has a
body 270 connected to a wire lead 272. In other embodiments,
the float sensor 264 may be wireless. In suitable embodiments,
the body 270 may be any shape and size that enables the float
sensor 264 to function as described herein. For example, the
body 270 may have a length 274 in a range between about 1 inch
and about 25 inches or between about 5 inches and about 10
inches. The body 270 may have a maximum width 276 in a range
between about 0.125 inches and about 5 inches or between about
0.25 inches and about 2 inches. In the exemplary embodiment,
the body 270 has a length 274 of approximately 8.5 inches and a
maximum width 276 of approximately 0.5 inches. While in the
illustrated embodiment the body 270 is substantially
cylindrical, it is understood that the body 270 may have any
shape without departing from some aspects of this disclosure.
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Date Regue/Date Received 2024-04-16
C0074] As shown in FIG. 8, the float 266 has a
height 278 and a width 280. In suitable embodiments, the height
278 and width 280 may be any measurements that enable the float
266 to function as described herein. For example, the height
278 may be in a range between about 0.125 inches and about 10
inches or between about 1 inch and about 5 inches. In the
exemplary embodiment, the height 278 is approximately 2 inches.
The width 280 may be in a range between about 0.125 inches and
about 10 inches or between about 1 inch and about 5 inches. In
the exemplary embodiment, the width 280 is approximately 2
inches. While in the illustrated embodiment the height 278 and
the width 280 are substantially equal, it is understood that the
height 278 and the width 280 may be unequal without departing
from some aspects of this disclosure. In the illustrated
embodiment, the float 266 is substantially cube-shaped with
rounded ends, which simplifies manufacturing and assembly. In
other embodiments, the float 266 may have any shape that enables
the float to function as described herein. For example, in some
embodiments, the float 266 may be substantially spherical.
[0075] In addition to or as an alternative to the
float sensor 264, the filtering system 200 may include a first
- liquid presence sensor (not shown) and a second liquid presence
sensor (not shown). The first liquid presence sensor may be
positioned above the second liquid presence sensor.
Accordingly, the liquid presence sensors can be used to
determine if a liquid is at a desired level in relation to the
liquid presence sensors. For example, the first and second
liquid presence sensors can be used to determine if liquid is at
a level above or below the liquid plane which may be defined
between the first and second liquid presence sensors.
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Date Regue/Date Received 2024-04-16
[0076] As shown in FIG. 9, the top wall 218
includes a plurality of ports 282. The ports 282 may be any
suitable ports that enable the filtering system 200 to function
as described herein. The ports 282 facilitate attaching
components to the filtering system 200 such that the components
are fluidly connected to the interior space 206. For example,
in some suitable embodiments, at least one of the following may
be attached to the filtering system 200 and fluidly communicate
with the interior space 206 via the ports: a manifold (such as
manifold 289), a bleeder valve, a pressure relief valve, and a
pulse width modulated valve (such as vapor valve 214), In some
embodiments, the ports 282 facilitate removal or exhausting of
vaporized fluid from within the interior space 206. The ports
282 may have any size and shape. In the illustrated embodiment,
the porte 282 are at least partially circular with a diameter
between about 0.1 in. and about 1.2 in. In the illustrated
embodiment, at least some of the ports 282 are threaded ports
having a size of approximately 0.25 in, according to national
pipe thread (NIn) standards.
[0077] In suitable embodiments, the top wall 218
may be any shape and size that enable the filtering system 200
to function as described herein. In the exemplary embodiment,
the top wall 218 has a substantially circular shape with a
diameter 284. The diameter 284 may be any length. For example,
the diameter 284 may be in a range between about 5 inches and 25
inches or in a range between about 10 inches and about 15
inches. In the illustrated embodiment, the diameter 284 is
approximately 11 inches,
[0078] As shown in FIGS. 3 and 4, the filtering
system 200 further includes a drain port 286 for draining fluid
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Date Regue/Date Received 2024-04-16
from the interior space 206. Suitably, the drain port 286 is
disposed in the bottom wall 220. In suitable embodiments, the
drain port 286 may have any configuration that enables the
filtering system 200 to function as described herein. For
example, the drain port 286 may have a diameter in a range
between about 0.125 inch and about 5 inches. In some
embodiments, the drain port 286 may have a length in a range
between about 0,25 inches and about 10 inches. In the exemplary
embodiment, the drain port 286 has a length of approximately 1.5
inches and a diameter of approximately 0.25 inches.
[0079] FIG. 10 is a perspective view of the
manifold 289 of the valve assembly 288 (shown in FIG, 4). The
manifold 289 is configured to receive a plurality of the vapor
valves 214 (shown in FIG. 4). In the exemplary embodiment, the
manifold 289 defines an interior passage 291 and a plurality of
cavities 293 in fluid communication with the internal passage
291. The cavities 293 are configured to receive the vapor
valves 214. The manifold 289 also includes at least one outlet
(not shown) on a bottom surface of the manifold 289 that fluidly
connect the interior passage 291 to one or more of the ports 282
defined in the top wall 218.
[0080] In the illustrated embodiment, the manifold
289 has a rectangular cuboid shape. The manifold 289 is
configured to be fastened to the filtering system 200 such that
the bottom surface of the manifold 269 contacts top wall 218
(shown in FIG. 9), and such that the outlets of the manifold 289
are aligned with corresponding ports 282 defined by the top wall
218. In alternative embodiments, the manifold 289 may be
coupled to any portion of the filtering system 200.
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[0081] FIGS. 11-13 illustrate another embodiment of
a filtering system indicated generally by the reference number
201. Components of the filtering system 201 that are the same
as the components of the filtering system 200 are identified
with like reference numerals. The filtering system 201 is
similar to the filtering system 200 except the filtering system
201 is configured to dispense material from the interior space
206 to a casing 290. In alternate embodiments, material may be
removed from the filtering system 201 in any manner that enables
the fluid application system 100 to function as described
herein.
[0062] As shown in FIG. 11, the casing 290 is
connected to the container 204 and configured to collect the
material removed from the fluid. In reference now to FIG. 12,
the casing 290 defines a cavity 292 in fluid communication with
the interior space 206 such that fluid and material can move
between the interior space 206 and the cavity. A seal separates
the cavity 292 and the interior space 206 and is selectively
positionable between an opened position where the fluid and
material is allowed to move between the interior space and the
cavity and a closed position where the fluid and material is
inhibited from moving between the interior space and the cavity.
en some embodiments, the seal may be configured to cycle between
the closed position and the opened position. Suitably, the
casing 290 is configured to facilitate removal of the material
while the seal is in the closed position. For example, the
casing 290 may be configured to release material from the cavity
292 to the surrounding environment when the seal cycles to the
closed position. In some suitable embodiments, the easing 290
includes a valve that cycles between the opened and closed
positions to release material from the cavity. In some
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Date Regue/Date Received 2024-04-16
embodiments, the system 100 further includes an output device
configured to output a visually- and/or audibly-perceptible
warning or alarm to indicate that a release of material and
volatile fluid from cavity 292 is imminent. The output device
is communicatively coupled to controller 126, and may be mounted
to system 100 at any suitable location that enables the alai to
be perceived by persons in the vicinity of filtering system 200,
In some embodiments, for example, the output device is mounted
on or near a rear of vehicle 102. The output device may include
any suitable device that enables the output device to function
as described herein, including, for example and without
limitation, speakers and lights.
100831 In
reference to FIGS, 12 and 13, a collector
294 is connected to the casing and defines an interior 296
separated from the cavity 292 by a seal. The seal is
poaitionable between an opened position and a closed position.
The collector 294 may have any suitable shape that enables the
collector to function as described herein. In the illustrated
embodiment, the collector 294 is substantially cylindrical with
a diameter 297 and a height 298. In some suitable embodiments,
the diameter 297 is in a range between about 1 inch and about 20
inches or between about 2 inches and about 6 inches. In the
exemplary embodiment, the diameter 297 is approximately 4
inches. In some suitable embodiments, the height 298 is in a
range between about 1 inch and about 20 inches or between about
2 inches and about 6 inches. In the exemplary embodiment, the
height 298 is approximately 4 inches. A port 299 is defined in
the top of the collector 294 for connecting to the casing 290.
In suitable embodiments, the port 299 is any size. In the
exemplary embodiment, the port 299 is a threaded port having a
size of approximately 1 in. according to national pipe thread
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Date Regue/Date Received 2024-04-16
(NPT) standards. In further suitable embodiments, a vent is
connected to the cavity to release vapor to one of a ground
engagement device and the atmosphere.
[0084] FIGS. 14-16 illustrate another embodiment of
a filtering system indicated generally by the reference number
300. The filtering system 300 is similar to the filtering
system 200 except the filtering system 300 includes a different
collection system 302. In particular, the collection system 302
includes a filter spring 304 to facilitate operation of the
filtering system 300. In the illustrated embodiment, the filter
spring 304 is a helical spring that facilitates biasing the
collection system 302 in position within the filtering system
300. In alternate embodiments, the filtering system 300 may
include any collection system 302 that enables the fluid
application system 100 to function as described herein.
[0085] The methods, apparatus, and systems
described herein facilitate handling fluid for application to
ground. In one suitable embodiment, a filtering system for
collecting material suspended in a volatile fluid is described.
The system includes a container defining an interior apace for
holding the fluid and a separator disposed in the interior
space. The separator is configured to separate the fluid into a
liquid and a vapor such that the vapor is disposed above the
liquid. A liquid level is defined between the liquid and the
vapor. The filtering system further includes an inlet for the
fluid to enter the interior space and an outlet for the fluid to
flow out of the interior space. The fluid flows from the inlet
towards the outlet. The container is configured such that the
liquid level is disposed above the outlet. A collection
mechanism is disposed within the container and at least
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Date Regue/Date Received 2024-04-16
partially between the outlet and the inlet for collecting the
material suspended in the fluid and releasing the material at
selected times.
[0086] In one suitable embodiment, the filtering
system is connected in fluid communication with a valve
configured to control the supply of fluid through the filtering
system. The collection mechanism releases the material when the
valve is in a closed position to inhibit fluid flow through the
interior space.
[0087] In another suitable embodiment, the
collection mechanism includes a magnet magnetized to collect
material.
[0088] In yet another suitable embodiment, the
collection mechanism includes an electromagnet and a power
source providing electrical current to the electromagnet.
[0089] Moreover, in another suitable embodiment,
the filtering system is used in combination with a vehicle that
travels along application paths. The collection mechanism is
configured to release the material when the vehicle reaches the
end of one of the application paths.
[0090] In another suitable embodiment, the
collection mechanism further includes a secondary collection
apparatus for holding the material released by the collection
mechanism.
[0091] In another suitable embodiment, a sensor is
configured to detect when the collection mechanism has collected
a specified amount of material. The specified amount of
material is based at least in part on the maximum collection
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capacity of the collection mechanism. In one embodiment, an
operator interface indicates to an operator when the collection
mechanism collects the specified amount of material.
[0092] In addition, in another suitable embodiment,
a sensor is configured to detect the amount of current through
the electromagnet and a controller is connected to the sensor.
The controller is configured to determine based on the current
and voltage when the collection mechanism has collected the
specified amount of material. In one embodiment, upon
determining the collection mechanism has collected the specified
amount of material the controller performs at least one function
of the following functions: indicating to an operator the
collection mechanism has reached maximum capacity, activating a
cycle of the collection mechanism to release at least a portion
of the collected material, and powering off a power source
connected to the controller.
[0093] In some suitable embodiments, the fluid is a
volatile liquid agricultural fertilizer. In one embodiment, the
filtering system is used in combination with a pressurized tank
for storing the fertilizer and a plurality of dispensing tubes
for dispensing the fertilizer on the field. The filtering
system is coupled between and in fluid connection with the
pressurized tank and the dispensing tubes.
[0094] In one particularly suitable embodiment, a
method for filtering volatile fluid using a filtering system is
provided. The filtering system includes a container defining an
interior space and a collection mechanism disposed in the
interior space. The container includes an outlet. The method
includes separating the fluid into a liquid and a vapor,
directing the fluid through the interior space such that the
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fluid flows towards the outlet, and discharging the fluid
through the outlet. The material is collected with the
collection mechanism as the fluid flows through the container.
The method further includes selectively inhibiting fluid flow
through the interior space and releasing material from the
collection mechanism when fluid flow through the interior space
is inhibited. The released material is stored such that the
material is inhibited from being carried through the outlet when
fluid flow through the interior space resumes.
[0095] In another suitable embodiment of the method
set forth above, the collection mechanism includes an
electromagnet and the method further includes drawing current
through the electromagnet to attract material to the
electromagnet,
[0096] Tn yet another suitable embodiment of the
method described above, a valve is closed to inhibit fluid flow.
[0097] In yet another suitable embodiment of the
method described above, the released material is stored in a
compartment connected to the container. In one embodiment, the
compartment is detached from the container to remove material
from the compartment.
[oosa] In another suitable embodiment, the method
includes sensing a characteristic of the filtering system and
sending information relating to the characteristic to a
controller connected to the filtering system. In one
embodiment, a signal is sent from the controller to the
collection mechanism. The signal causes the collection
mechanism to release material.
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[0099] In still another embodiment, a system for
dispenSing a volatile fluid includes a container defining an
interior space for holding the fluid. The container is
configured to separate the fluid into a liquid and a vapor such
that at least a portion of the vapor is disposed above the
liquid. At least one outlet is defined in the container and
disposed below a liquid plane defined through the container. At
least one vapor valve is connected to the container and
configured to exhaust the portion of the vapor disposed above
the liquid from the container. A sensor is configured to detect
the level of the liquid in the container. The system further
includes a controller communicatively coupled to the sensor and
the vapor valve. The controller is configured to determine if
the level of the liquid is below the liquid plane and control
actuation of the vapor valve to maintain the level of the liquid
at or above the at least one outlet.
[0100) In another suitable embodiment of the system
described above, the controller is configured to perform a
function upon determining that the level of the liquid is below
the at least one outlet. The function includes at least one of
triggering an indicating alarm, stopping fluid flow out of the
container, and causing liquid to bypass the at least one outlet.
[0101) In still another suitable embodiment, the
system further includes a plurality of inlets for fluid to enter
the container, The plurality of inlets are positioned below the
at least one outlet.
(0102] In yet another suitable embodiment, the
System further includes an injection port for injection of
additives into the container. The injection port is configured
such that additives injected through the injection port are
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Date Regue/Date Received 2024-04-16
substantially uniformly distributed throughout the interior
space.
[0103] Moreover, in another suitable embodiment, a
metering component is connected in fluid communication with and
downstream from the at least one outlet. In one embodiment, the
metering component includes at least one pulse width modulated
solenoid valve.
[0104] In another particularly suitable embodiment,
a method for dispensing a fluid from a container defining an
interior space for holding the fluid is provided. The fluid
includes a liquid and vapor. The container includes an upper
portion and a lower portion. The method includes generating a
flow of fluid through the container such that the vapor and
liquid are separated. The vapor is disposed above the liquid.
The liquid is dispensed through at least one outlet defined in
the container. The at least one outlet is disposed below a
liquid plane defined through the container intermediate the
upper portion and the lower portion. The method further
includes determining the level of the liquid in the interior
space, determining if the level of the liquid is below the
liquid plane, and releasing vapor from at least one vapor valve
such that the liquid level is maintained above the liquid plane.
[0105] In another suitable embodiment, the method
described above further includes sensing a characteristic of the
fluid in the container and Bending information relating to the
characteristic to a controller. In one embodiment, the
controller determines the level of the liquid in the interior
space. In another embodiment, the method further comprises
sending a signal from the controller to the at least one vapor
valve based on the sensed characteristic. In another
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embodiment, the characteristic relates to the vapor flowing
through the at least one vapor valve. In still another
embodiment, the method further includes sending a signal from
the controller to the at least one vapor valve. The signal
causes the at least one vapor valve to adjust the flow of vapor
through the at least one vapor valve.
[0106) In another particularly suitable embodiment,
a method for handling a volatile fluid includes separating the
fluid into a liquid and a vapor within a container such that a
liquid level is defined between the liquid and the vapor. The
level of the liquid in relation to the container is sensed. At
least one valve is actuated to exhaust the vapor from the
container to maintain the level of the liquid at a desired
level. The at least one valve is in communication with a
controller. The method further includes sending a signal from
the at least one valve to the controller, and determining a
characteristic of the fluid based at least in part on the
signal.
[0107] In another suitable embodiment, the method
described above further includes sending signals from the
controller to an operator interface and displaying the
characteristic on the operator interface. In one embodiment, at
least one of an alam, a shutoff, and a bypass is triggered when
the characteristic is within a predetermined range of values.
[0108] In still another suitable embodiment, the
method includes positioning the at least one valve in a closed
position to inhibit the vapor from being released in
coordination with the cycling of a fluid application system
connected to the container.
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[0109] In still another particularly suitable
embodiment, a system for handling a volatile fluid includes a
container for storing and separating the fluid into a liquid and
a vapor such that a liquid level is defined substantially
between the liquid and the vapor. The system includes at least
one valve for releasing the vapor from the container, at least
one sensor for sensing the liquid level, and a controller in
communieation with the at least one valve and the at least one
sensor. The controller is configured to control the at least
one valve to release the vapor such that the liquid level is
maintained at or above a desired liquid level. The controller
is configured to determine diagnostic data based at least in
part on signals received from the least one valve and the at
least one sensor.
[0110] In another suitable embodiment of the above
described system, a global positioning device is communicatively
coupled to the controller to deteLmine one or more positions of
the system. The controller is configured to generate a spatial
map of the diagnostic data based on the one or more determined
positions of the system.
[0111] In one suitable embodiment, the at least one
sensor comprises a float.
[0112] In another suitable embodiment, the at least
one sensor comprises a capacitive device.
[0113] In still another suitable embodiment of the
system described above, the at least one sensor comprises a
plurality of liquid presence sensors. At least one liquid
presence sensor of the plurality of liquid presence sensors is
positioned above the liquid level and at least one other liquid
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presence sensor of the plurality of liquid presence sensors is
placed below the liquid levels.
[0114] In yet another suitable embodiment, the
system further includes at least one of a pressure sensor, a
temperature sensor, a density sensor, a valve position sensor, a
valve voltage sensor, a valve current sensor, a valve duty cycle
sensor, a valve orifice measurement device, a flow sensor, and a
flow switch.
10115) Moreover, in another suitable embodiment,
the controller determines the diagnostic data based at least in
part on one of a pressure, a temperature, a density, a position
of the at least one valve, saturation curves, and enthalpy
charts.
[0116] In some suitable embodiments, the diagnostic
data includes the amount of vapor released through the at least
one valve. In one embodiment, the system further includes an
operator interface communicatively coupled to the controller.
The operator interface is configured to display an operational
status in response to signals received from the controller. The
operational status is based at least in part on the amount of
vapor released through the at least one valve.
[0117] In one suitable embodiment, a method of
removing solid material from a volatile fluid in an interior
space defined by a container is described. The container
includes an inlet and an outlet. The solid material has a
greater density than a density of the fluid. The method
includes directing the fluid into the interior space through the
inlet and generating a flow of fluid through the interior space
at a velocity such that the fluid at least partially separates
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Date Regue/Date Received 2024-04-16
into vapor and liquid and such that the solid material settles
at least partially below the liquid. A portion of the vapor is
released through a vapor valve and a portion of the liquid is
discharged.
[0118] In another suitable embodiment, the method
further includes collecting at least a portion of the solid
material in a bottom of the container.
[0119] In yet another suitable embodiment, a flow
of the fluid is generated through the interior space at a
velocity which is less than at least one of a percolation speed
of the vapor and a downward velocity of the solid material due
to gravitational forces.
[0120] In another suitable, the method further
includes reducing the velocity of the fluid flow to facilitate
the solid material settling below the liquid.
[0121] In one suitable embodiment, a system for
removing solid material from a volatile fluid includes a
container defining an interior space for holding the fluid, a
separator disposed within the interior space and configured to
separate the fluid into vapor and liquid, an inlet port for
fluid to enter the interior space, and an outlet port for fluid
to exit the interior space. The separator is configured to
control a velocity of the fluid flowing between the inlet port
and the outlet port such that the vapor is separated from and at
least partially disposed above the liquid and the solid material
is separated from and disposed at least partially below the
liquid. The outlet port is configured to discharge the liquid.
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Date Regue/Date Received 2024-04-16
[0122] In another suitable embodiment, a baffle is
adjacent the outlet port to inhibit vapor flowing through the
outlet port.
[0123] In yet another suitable embodiment, the
container includes an upper portion, a lower portion, and a
middle portion between the upper portion and the lower portion.
The inlet port and the outlet port are disposed in the middle
portion. The vapor is positioned substantially within the upper
portion and the solid material is positioned substantially
within the lower portion. In one embodiment, at least one of
the upper portion and the lower portion is positionable in
relation to the middle portion. A coupling mechanism is
disposed on at least one of the upper portion, the middle
portion, and the lower portion to connect the middle portion to
the at least one of the upper portion and the lower portion. In
another embodiment, a drain is disposed in the lower portion of
the container.
[0124] In another embodiment, the fluid is a
volatile nutrient-rich fluid for use as an agricultural
fertilizer. The system further including at least one safety
device configured for the safe and effective handling of the
fluid. In one embodiment, the at least one safety device
includes at least one of the following: a vent valve, a
hydrostatic relief valve, a pressure gauge, an overflow
protection device, and a hose breakaway device.
[0125] In still another suitable embodiment, a
system for removal of material from a volatile fluid includes a
container defining an interior space for containing the fluid.
The container is configured such that the fluid separates into
liquid and vapor. A casing is adjacent the container and
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Date Regue/Date Received 2024-04-16
configured to collect the material removed from the fluid. The
casing defines a cavity in fluid communication with the interior
space. A seal separates the cavity and the interior space. The
seal is positionable between an opened position where the fluid
carrying the material is allowed to flow from the interior space
to the cavity and a closed position where the fluid is inhibited
from flowing from the interior space to the cavity. The casing
is configured to facilitate removal of the material while the
seal is in the closed position,
[0126] In another suitable embodiment of the
system described above, the seal iS configured to cycle between
the closed position and the opened position and the casing is
configured to release material from the cavity to the
surrounding environment when the seal cycles to the closed
position.
[0127] In yet another suitable embodiment of the
system described above, the seal comprises a first seal and the
system further includes a second seal and a collector removably
connected to the casing for collecting material from the cavity.
The second seal is disposed between the collector and the casing
and positionable between an opened position and a closed
position.
[0126] In still another embodiment, the system
further includes a discharge port for discharging material from
the cavity to the surrounding environment. The material is
discharged at least in part due to the force of gravity.
[0129] Moreover, in another embodiment, the system
further includes an output device configured to output at least
one of a visually- and audibly- perceptible alarm to indicate
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when material and volatile fluid are being released from the
cavity.
[0130] In another embodiment, the system further
includes a manually controlled actuator configured to discharge
material from the cavity when actuated.
[0131] In another suitable embodiment of the system
described above, the casing includes a valve that cycles between
opened and closed positions.
[0132] In another suitable embodiment, the system
further includes a controller configured to send signals to the
casing that cause the casing to release material from the
cavity. In one embodiment, the controller is configured to
control the casing such that the casing releases material in
coordination with an application cycle of a distribution
manifold connected to the reservoir,
[0133] In still another embodiment, the system
further includes a vent for releasing vapor. The vent is
configured to release vapor to one of a ground engagement device
and the atmosphere. In one embodiment, the system further
includes a valve to control release of vapor from the vent
during predetermined time periods.
[0134] In another particularly suitable embodiment,
a method of removing material from a volatile fluid using a
filtering system is provided. The filtering system includes a
container defining an interior space and a filter media disposed
within the interior space. The container has an upper portion
and a lower portion. The method includes generating fluid flow
from the lower portion in a direction at least partially towards
the upper portion. The flow of the fluid is sufficient to carry
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the material at least partially in a direction towards the upper
=
portion. The material is forced against the filter media such
that the filter media at least partially holds the material
while fluid flows through the filter media. A velocity of the
fluid flow is reduced such that at least some of the material is
released from the filter media. The released material is
directed towards the lower portion of the container and
collected in the lower portion of the container.
[0135] In another suitable embodiment, the method
further includes cycling the velocity of the fluid flow between
a velocity sufficient to hold the material against the filter
and a reduced velocity.
[0136] In yet another suitable embodiment of the
method described above, the fluid flow is stopped.
[0137] In still another suitable embodiment, the
method further includes injecting additives into the fluid after
material has been removed from the fluid.
[0138] In another suitable embodiment, the method
further includes directing materials to desired positions on the
filter media to facilitate the material releasing from the
filter media when the flow is reduced.
[0139] In another suitable embodiment ef the method
described above, the material is directed to a center of the
filter media. The filter media is substantially cone-shaped.
[0140] In a particularly suitable embodiment, a
system for removing material from a volatile fluid includes a
container defining an interior space. The fluid flows through
the interior space from a lower portion of the container to an
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upper portion of the container and the container is configured
to separate the fluid into a vapor and a liquid such that the
liquid is disposed substantially in the upper portion. A filter
media is disposed in the interior space intermediate the upper
portion and the lower portion. The filter media is configured
to hold material in a substantially stationary position as the
fluid flows from the lower portion in a direction towards the
'upper portion and to release at least a portion of the material
when a velocity of the fluid flow is reduced. The system
further includes a collection area in the lower portion of the
container. The collection area is configured to collect
material that is released from the filter media as the velocity
of the fluid flow is reduced.
[01413 In another suitable embodiment, the system
further includes an injection port for injection of additives
into the fluid.
[0142] In another suitable embodiment, the system
further includes a sensor configured to detect a state of the
filter media and an operator interface to indicate to an
operator the state of the filter media.
[0143] In another suitable embodiment of the system
described above, the container further includes an inlet and an
=
outlet. The outlet is disposed intermediate the upper portion
and the lower portion and the inlet is disposed intermediate the
outlet and the lower portion.
[0144] In one particularly suitable embodiment, a
filtering system for collecting material suspended in a volatile
fluid includes a container defining an interior space for
holding the fluid, an inlet for the fluid to enter the interior
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space, and an outlet for the fluid to flow out of the interior
space. The fluid flows from the inlet towards the outlet. A
collection mechanism is disposed within the container and at
least partially between the outlet and the inlet. The
collection mechanism is configured to collect the material
suspended in the fluid and to release the material at selected
times. The system further includes a valve connected in fluid
communication with the filtering system and configured to
control the supply of fluid through the filtering system. The
collection mechanism releases the material when the valve is in
a closed position.
[0145] In another suitable embodiment, the system
described above is used in combination with a vehicle that
travels along application paths. The collection mechanism is
configured to release the material when the vehicle reaches the
end of one of the application paths.
[0146] In yet another suitable embodiment, the
collection mechanism includes a magnet. The magnet is
magnetized to collect material. In one embodiment, the
collection mechanism includes an electromagnet and a power
source providing electrical current to the electromagnet.
[0147] In still another suitable embodiment, the
system further includes a sensor configured to detect when the
collection mechanism has collected a specified amount of
material. The specified amount of material is based at least in
part on the maximum collection capacity of the collection
mechanism. In one embodiment, the system further includes a
sensor configured to detect the amount of current through the
electromagnet and a controller connected to the sensor. The
controller is configured to determine based on the current and
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voltage when the collection mechanism has collected the
specified amount of material.
[0148] Moreover, in another embodiment, upon
determining the collection mechanism has collected the specified
amount of material the controller performs at least one function
of the following functions: indicating to an operator the
collection mechanism has reached maximum capacity, activating a
cycle of the collection mechanism to release at least a portion
of the collected material, and powering off a power source
connected to the controller.
[0149) While, in some embodiments, the described
methods and systems are used to handle a fluid that is applied
to agricultural fields, such as anhydrous ammonia, the described
methods and systems may be used for handling any type of fluids,
not just fluids for use in the agricultural industry.
[0150] Embodiments of the methods and systems
described may more efficiently handle fluids compared to prior
methods and systems. For example, the systems and methods
described provide improved filtering systems that increase the
operating efficiency and reduce maintenance time of application
systems. More specifically, the embodiments described provide
for more effectively removing material from fluid and
efficiently disposing the removed material. Some embodiments
provide for improved monitoring and control of components of the
application systems to reduce incidents of misapplication.
[0151] Some embodiments involve the use of one or
more electronic or computing devices. Such devices typically
include a processor, processing device, or controller, such as a
general purpose central processing unit (CPU), a graphics
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processing unit (CPU), a microcontroller, a reduced instruction
set computer (RISC) processor, an application specific
integrated Circuit (ASIC), a programmable logic circuit (PLC), a
field programmable gate array (FPGA), a digital signal
processing (ASP) device, and/or any other circuit or processing
device capable of executing the functions described herein. The
methods described herein may be encoded as executable
instructions embodied in a computer readable medium, including,
without limitation, a storage device and/or a memory device.
Such instructions, when executed by a processing device, cause
the processing device to perform at least a portion of the
methods described herein. The above examples are exemplary
only, and thus are not intended to limit in any way the
definition and/or meaning of the term processor and processing
device.
[0152] When introducing elements of the present
invention or the preferred embodiment(s) thereof, the articles
"a", "an", "the" and "the" are intended to mean that there are
one or more of the elements. The terms "comprising",
"including" and "having" are intended to be inclusive and mean
that there may be additional elements other than the listed
elements. moreover, the use of "top", "bottom", "above",
"below" and variations of these terms is made for convenience,
and does not require any particular orientation of the
components.
[0153] As various changes could be made in the
above without departing from the scope of the invention, it is
intended that all matter contained in the above description and
shown in the accompanying drawings shall be interpreted as
illustrative and not in a limiting sense.
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