WASTE PRESS DEVICE

DISPOSITIF DE PRESSE DE DECHETS

English Abstract

The invention relates to a waste press device consisting of a rotating drum
(8). The drum (8) contains an eccentric internal shaft (9), from which
striking rods (12) pass through a inlet hole (10) and through the drum, with
the drum end reciprocating axially during one revolution.

French Abstract

L'invention concerne un dispositif de presse de déchets pourvu d'un tambour rotatif (8). Ce tambour (8) présente un arbre interne excentrique (9), à partir duquel des tiges de frappe (12) s'étendent à travers un trou d'entrée (10) et à travers le tambour, l'extrémité du tambour effectuant un mouvement de va-et-vient axial au cours d'une révolution.

Claims

6
Claims
1. A waste press device comprising a rotating drum (8) having an internal
eccentric inner shaft (9), from which transfer rods (12) pass through a inlet
hole
(10) through the drum so that an end of the rod reciprocates axially during
one
revolution, characterised in that a rack of the device is arranged to move on
vertical rails (15).
2. A waste press device according to claim 1, characterised in that a power
source of the device is an electric motor (4) rotating both the drum (8) and
the
inner shaft (9) via a transmission.
3. A waste press device according to claim 1 or 2, characterised in that
shredders (18) are fixed to the device rack between the drum (8) and the
transfer rods (12).
4. A waste press device according to any of the preceding claims,
characterised in that a ramp (27) is provided in an extension of a feed ramp
(26) of the device for directing the goods through the waste press device
upwardly and further into a container.
5. A waste press device according to any of the preceding claims,
characterised in that said rack of the device is fixed to rolls (16) moving on
vertical rails.
6. A waste press device according to any of the preceding claims,
characterised in that transfer rods (12) comprises a moving member at the end
of each rod.

Description

CA 02575210 2007-01-25
PCT /F12005 /000341
Z4MAR 2=
Waste press device
This invention relates to a waste press device comprising a rotating drum
having an internal eccentric inner shaft, from which transfer rods pass
through
an inlet hole through the drum so that an end of the rod reciprocates axially
during one revolution.
Waste presses known per se comprise pendulum piston presses, screw
presses, axial-piston presses, baling presses, crushers, roller crushers and
hook shredders, Fl 41935, US 3 279 357 and GB 1 024 726, for instance,
disclose waste press devices known per se. These waste presses known per se
have the following shortcomings:
Pendulum piston press: a small-sized hopper opening, hydraulics; screw press:
slow because simultaneous crushing and pressing (inadequate force for both
operations); axial-piston press: an intermediate lid with low fault tolerance
(detachment under wear), discontinuous feed, hydraulics; bale press; intended
for small batches at one time, hydraulics, (relatively) high cost; crushers:
only
crushing, no pressing, materials required to be transferred to a separate
press;
roll crushers: only reduction of treated material particle size, treated
materials
stick to crusher teeth and return for other treatment cycles; so called hook
shredders: only shredding and crushing, materials required to be transferred
to
a separate press.
This invention has the purpose of overcoming the drawbacks mentioned above.
The waste press device of the invention is characterized by the rack of the
device is arranged to move on vertical rails.
The waste press device of the invention has the following advantages:
Low power consumption < 15kW per device: low operating costs. High material
handling capacity: time saving. Easy maintenance: no long delays for the
customer in case of malfunction. Straightforward mechanism: reliability.
Versatility: available in any size, with any width and height.
Low operating costs compared to hydraulic presses.
AMENDED SHEET (IPEA/FI)

CA 02575210 2007-01-25
FCt /Fl200 51 000341
24 MHR 10
2
Higher continuous feed speed: can handle larger amounts of materials in a
shorter amount of time compared to other presses.
No hydraulics: more environment-friendly and easier maintenance (also in the
winter).
It is able to reduce treated material to smaller particle size (e.g. cardboard
and
wood) if desired because of separate shredding rolls, in order to fit more
material better into containers, which means less frequent emptying of
containers. Slowly rotating mechanism: low operating costs and higher
reliability. The device rises over objects or materials that are too big:
higher fault
tolerance. Controlled by PLC logic: no need for physical monitoring of the
device.
The invention is explained below by means of an example and with reference to
the accompanying drawings, in which
Figures 1-3 are axonometric views of the waste press from three different
directions.
The power supply is 400V/50Hz, fuse requirement: slow 32A. (1) over a current
wire cable to the device, from the plug contact to the electric cabie (3),
from
there to the electric motor (4) having a power in the range 40W-4OkW.
The electric motor is connected to a reduction gear (5) having an approximate
ratio of 1:7. On the reduction gear a sprocket wheel (6) and the power
transmission by means of a chain (7).
Chains drive two parts: the outer drum (8) and the inner shaft (9). The outer
drum has a number (n) of openings in rows (10) and the inner shaft comprises
transfer-rods (12) between flanges (11), the transfer-rods being "locked" by
locking shafts (13).
All the parts 4-13, 17,22 mentioned above are fixed to the same "rack", which
has vertical degree of freedom in the vector Z. Movement in the direction of
planes X and Y is limited by rails (15).
AMENDED SHEET (IPEA/FI)

CA 02575210 2007-01-25
PCT 1200 000341
3 ~ 4 MAR 20M
As the rack rises on the rails (15) along the rolls (i.e. controlled by rolls
(16)) up
to the set (e.g. limited) height, a limit-switch (17) short-circuits and
operation/drive is interrupted. The fed material can be directly reduced by
means of "shredders" (18) placed between the paths of the transfer-rods (the
shredders are e.g. rolls or disks).
The transfer-rods pass radially through the rod openings on the drum outwards
on the input-side (19) and inwards on the container (20) side. When the
transfer-rods have been completely retracted, the drum-wedge (21) (part of the
rack) mechanically removes all the small residues from the drum surface.
During the drive-cycle, the drum and inner shaft rotate at the same speed of
rotation. The device can be controlled via PLC logic (25). The materials are
fed
through a feeding opening arrive via the hopper ramp (26). A ramp (27) can be
placed to direct material upwards into the container.
The machine can be manufactured in a variety of sizes, for various purposes of
use by utilizing variations of the machine: municipal household waste
compactor, cardboard and paper compactor, wood or timber compactor,
expanded polystyrene and other packaging materials compactor, a small
household compactor, waste collection vehicle compactor, waste-bin pre-
compaction unit, restaurant food-waste bin compactor.
Examples of shredders: rollers, toothed shredders, fixed or stationary
shredders, axe-head blade shredders.
The entire rack can be shock absorbed by means of springs and shock
absorbers.
The shock absorption and springs can be adjustable.
The drum may be height-adjustable relative to the hopper ramp.
The feeding entrance to hopper ramp may be dispensed from the side or from
the top.
The hopper ramp may be straight, oblique, inclined, convex, concave or mobile.
AMENDED SHEET (IPEA/FI)

CA 02575210 2007-01-25
PCT IF12005/000341
2 4 r=f,~~ 2r~
4
A compression-ramp directly after the drum, may be straight, oblique,
inclined,
convex, concave or mobile.
The power transmission may consist of a chain, rope, pinion gear, worm gear or
any other drive member or mechanism. Power transmission may also be
implemented by hydraulic means. The power transmission may also be manual.
The shape of the transfer-rods may be: sharp, pointed, blunt, conical, chisel-
point, crosshead, toroidal head and may even have a moving member or a
mechanism at the end of the rod.
The compactor may comprise of n. amount of rods in n. amount of rows.
The same machine may comprise of two or more drums with their respective
transfer-rods.
The transfer-rods may be protected inside the drum with an elastic material.
The inner shaft can be protected e.g. by encapsulation or rubber mass lining.
All the parts and components can be coated e.g. with a suitable protective
resin.
The outer drum in itself may be flexible and radially adjustable.
The drum (8) does not necessarily move vertically on the rails (15), but
equally
may move horizontally: for instance, in a low space, the entire waste
compactor
may be turned upside down or 90 degrees on principle. The machine may also
operate with the drum (8) in stationary position and the side of the machine
separates from the drum if material gets between them and is pressed through.
The transfer-rods (12) in the drum (8), which form an elongated comb, may also
be replaced with a plate-like or slab-like element, which conveys or transfers
liquid or similar substances through the waste compactor better than transfer-
rods.
AMENDED SHEET (IPEA/FI)

CA 02575210 2007-01-25
PCT / F 1 2 0 0 5 / 0 0 0 3 4 1 2 4 MAR 1=
Since the rack consists of the drum (8) with a mobile unit and its components,
it
can be easily lifted upwards on the rails (15) and removed for service or
repair.
AMENDED SHEET (IPEA/FI)

Representative Drawing