| Patent claims 1. A waste film washing machine for washing large-sized films consisting of the tub with rotating stirrers located on its rims, and of conveyors, equipped with a water supply installation, characterised in that situated on the tub (1) there are at least three revolving drums (4) with blades (8) located radially, however the revolving drums (4) are situated in such a way that the blade tops (8) of neighbouring drums (4) are very close to one another, therefore the gap between them allows an unobstructed movement of the drums (4) only, whereas the belt conveyor (11) is partially submerged in the tub but its lower end is situated beneath the revolving drums (4). 2. The machine in accordance with claim 1 , characterised in that the tub (1) has a dual-slope bottom (3), and in the lowest point on the side of the tub there is a drain valve (12). |
The subject matter of the invention is a waste film washing machine designed in particular for washing large-sized films.
There is a washing-transporting device known from the Polish patent application No. P-381251 consisting of a container, where stirrers with blades with curved tops are fastened in its top corners, and a screw conveyor extracting the washed waste film.
There is a waste plastics washing machine known from the published Japanese claim JP2007136936 consisting of a squeezer and a revolving drum with mixing blades on the inside and a spiral blade and a cylinder with holes allowing water flow at the end. In this machine water is fed into the revolving drum through an entry hole, and flows into a container installed under the cylinder; afterwards the water is treated in a different unit of the line.
In accordance with the present invention the main part of the washing machine is a tub set on legs on the rims of which there are at least three revolving drums equipped with blades located radially on the casing. The adjacent revolving drums are located in a distance allowing passing of the blade tops. The bottom of the tub has a dual slope converging to the middle of the tub. There is a drain valve in the lowest point on the longer side of the tub, a belt feeder located on the shorter rim of the tub, whereas opposite, partially inside the tub there is a belt conveyor. The drums are equipped with sprockets linked by a chain and powered by an electric motor so that they revolve in one direction towards the conveyor.
This washing machine is highly effective at washing large-size waste film, particularly used artificial fertilizer bags. The waste film fed into the machine is moved by the motion of the blades along the tub, the depth of which prevents them from remaining at the bottom, towards the conveyor which extracts them from the machine. The close location of revolving drums stops the waste film from escaping from the tub.
The subject matter of the invention is presented in the drawing figure.
The tub 1 shaped like an elongated container set on legs 2 has a dual- slope bottom 3 converging towards the middle. On the longer rims of the tub there are three revolving drums 4 with shafts 5 equipped with sprockets 6 and linked by a chain 7. On the casings of the drums 4 there are blades 8 located radially. The distance between the blade tops 8 of the neighbouring drums 4 is minimised to allow unobstructed movement of the drums 4. In the middle of the longer side near the bottom 3 there is a drain valve 9. Above the shorter rim of the tub 1 there is a belt feeder 10 and opposite there is a belt conveyor 11 installed partially inside the tub 1 in such a way that the submerged part of the conveyor is beneath the revolving drums 4. One of the shafts 5 is powered by an electric motor 12. This machine is additionally equipped with a water supplying installation which is not presented in the diagram.
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