Note: Descriptions are shown in the official language in which they were submitted.
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The inven-tion relates to a discharging
apparatus for use in a reservoir and which may be
employed~ more particularly, in the cellulose
industry, wherein a ro-tating arm serving to displace
to -the central discharge site the material -to be
discharged ls wi-thin -the zone of the reservoir floor
having central discharging capability.
~ eservoirs capable of discharging material
through the cen-tre of the floor with the assistance
of a rotating displacement arm are known in the art;
the disadvantage of -this arrangement resides in the
loca-tion of -the motive power ~or the displacement
arm, which since it is in the axis of reservoir, it
is likely to interrupt -the outflow of the ma-terial
- 15 from the reservoir, depending on the type of material
to be discharged.
A solu-tion -to solve this problem has been
proposed. This solution comprises providing a
central pipe serving at once for the discharge of
material and the ro-tation of the displacement arm and
featuring besides an unobstructed cross section, the
ability to rotate and carry, for example, conveying
ribs. This arrangement allows the pipe to convey
material by itself. The main distinguishing feature
of -the proposed discharging apparatus is, therefore,
that the rotating arm is connected to a rotating
discharge pipe protruding through the reservoir
floor.
The following is a list of distinguishing
features possessed by the discharging apparatus
according to the invention, and which can be used
singly or in combination:
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A pinion-drLven toothed ring connects with
the dlscharge pipe Eor -the purpose of turning
discharge pipe Eor -the purpose of turning discharge
pipe and arm.
The toothed ring is suppor-ted by a
ball-type slewing bearing and features an
axial-symmetrical pinion drive, that can be provided
by two diame-trically opposed pinions in particular.
The arm comprises a number of sections, and
it is preferable tha-t a first section that sweeps
through essentially the entire reservoir floor be
intersected at righ-t angles by a shorter second
section. Bent displacement blades in particular are
disposed along such sectlons so as -to be able to
advance material into the zone oE the displacement
blades of -the second section. The spacing of the
arms along the sections permits the material to be
advanced toward -the central discharge site and then
to be advanced further toward such site by the
folIowing blade, which is located in a zone of the
; section diametrically opposed to the zone of the
preceding blade.
The portion of the discharge pipe located
inside the reservoir is formed by two~ diametrically
opposed support members, which bear the mounting for
the arm. The latter bears along its axis a deflector
; that, projecting toward -the inside of the reservoir,
prevents the material to be discharged from falling
directly in-tQ -the discharge pipe. Conveying ribs
located on the inside of the discharge pipe project
into the free cavity thereof, are arranged preferably
at an angle to the radial direction and extend
preferably below the lower end of the discharge pipe.
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The invention shall next be described in
~- greater detail by means of drawings which illustrate
a preEerred embodiment thereof and in which :
Figure 1 shows a vertical section taken
along line A - A of Figure 3 through a reservoir
Eloor having a discharge appara-tusi~
Figure 2 is a section taken along line ~ -
B of Figure l;
Figure 3 is a view of the embodiment
illus-trated ln Figure 1 in -the direction indicated by
arrow X.
The embodiment is illustrated in Figure 1
in a scale larger than in Figures 2 or 3.
Arranged in the region of the floor inside
a reservoir 1 possessing a sloping floor 2 is a
displacement arm 3 featuring arms of unequal length
that in-tersect at right angles to form a cross.
Displacement blades are carried by these
arms and in such a way that the blades disposed along
the longer arm are capable of sweeping ~hrough the
peripheral zone of the~floor of the reservoir, while
the blades disposed along the shorter arm are capable
of sweeping through the cen-tral zone of the floor of
the reservoir.
The arrangernent of the blades ~urthermore
permits material to be advanced from one blade to the
following blade along displacement arm 3, while the
next blade lies diametrically opposi-te the preceding
blade of the same arm. In Figure 3, blades 4-10 are
arranged serially in the direction of displacement.
An examination of the arrangement of the displacement
blades reveals further that the acuteness of the
angle a-t which ~these blades are installed increases
from the periphery to the centre. A deflector 11 in
the form of pyramid having a quadratic base and which
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projects toward the inside of reservoir 1 ls caxried
in the middle of displac.ement 3; deflector 11 serves
to laterally deflect away from the head of displace-
men-t arm 3 the material to be discharged.
Displacemen-t arm 3 is bolted at 12 to a web
13 that bridges upstanding extensions 14, 15 of a
discharge pipe 16 that extends axially downward
beyond reservoir floor 2. Discharge pipe 16 features
no openings in the ~one beneath reservoir floor 2.
:; 10 Due to the discontinuity of the pipe wall
inside reservoir 1, and the fact that it is
completely closed up a-t the lower end of the
discharge pipe, such an arrangement permits displace-
ment blades 7 and 10 to move material without
impediment, into discharge pipe 16.
Two axial conveying ribs 17, 18 are mounted
inside of discharge pipe 16 and extend below the
wer end thereof. : :
The lower end of the discharge pipe 16 is
rigidly connected -to a surrounding pipe 19 featuring
annular grooves whichj although not illustrated in
further detail, serve to accept the downwardly pulled
reservoir floor. Surrounding pipe 19 furthermore
carries~, parallel to the rotation plane of displace-~
ment arm 3, an annular plate 20 onto whose external
rim is bolted a ring having external toothing, which
: shall hereinafter: be referred to as a toothed ring
21, to which assembly is connected an inner ring of a
~: ball-type slewing bearing arrangement 22 that on the
~; 30 inside is connec-ted to toothed ring 21 and on theou-tside is supported upon a ring 23 that is bolted to
a bed 24. This lmplies that the assembly consisting
of displacement arm 3; web 13, extensions 14, 15;
discharge pipe 16; surrounding pipe 19; annular plate
20; toothed ring 21 is borne upon a bed in such a way
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as to be able to rotate. Figures 2 and 3 demonstrate
that reservoir 1 is itself .suppor-ted upon four
bearlng members 25. Bed 24 can-- but need not be --
anchored -to -these bearing members 25 and features
beneath dlscharge pipe 16 a chute 26 that is aligned
wi-th the latter and into which conveyiny ribs 17, 18
of discharge pipe 16 extend.
Any one of a number of devices e.g. a
conveyor belt, sui-table for catching the discharged
material, can be positioned beneath chute 26~
Driving motors 27, which are installed
: diametrically opposite each other on bed 24, possess
similarly diametrically opposed pinions 28 that
engage toothed ring 21.
15The proposed construction thus permits a
system to remove material from the centre of
reservoirs whi.le featuring a high load bearing
capacity, an equalIy effective drive arrangement for
the displacement arm, and an entirely unobstructed
centrally located discharge conduit along whose
course can be install.ed without difficulty,
additional means suitable for facilitating the
continued removal of discharge material.
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