A plastic film drying volume reduction equipment

Abstract

The invention discloses plastic film drying and volume reduction equipment which can produce regenerated plastic with low water content under the half-molten state and has small energy consumption. The plastic film drying and volume reduction equipment comprises a rack, a feeding device arranged on the rack, a dehydration and extrusion device connected with the feeding device, and a main power device for driving the dehydration and extrusion device, wherein the dehydration and extrusion device comprises a drying barrel and an extrusion barrel which are arranged on the rack and are connected together, an extrusion screw rod arranged in the drying barrel and an extrusion die head arranged on the end part of the drying barrel; the extrusion screw rod comprises a rod body and a spiral blade arranged on the rod body; the rod body is connected with the main power device; a plurality of rows of water holes are uniformly distributed on the periphery of the barrel wall of the drying barrel; the outer diameter of the spiral blade on the extrusion screw rod is fixed; at least one part of the rod body is tapered and is gradually thickened from the feeding side to the extrusion side; the extrusion barrel is internally provided with a temperature sensor; the extrusion barrel is provided with a cooling device and a heating device which are controlled by the temperature sensor respectively.

Description

technical field [0001] The invention relates to a plastic film regeneration device, in particular to a plastic film drying volume reduction device. Background technique [0002] Used agricultural film, plastic bags, woven bags, etc. will pollute the environment after being discarded, and if these plastic films are recycled, many useful plastic products can be produced. For example, polypropylene PP can be drawn to make common plastic products such as woven bags, ropes, benches, basins, buckets, etc.; PE and polyethylene are generally blown to make convenient bags, agricultural films, etc. [0003] Generally, after the film is cleaned, the water content is high, and it is not easy to discharge the water during the granulation process with high water content, so that the blown film cannot meet the requirements when it is used, and it must be dried before it can be used, and the energy consumption is too high during drying. Big. Common drying methods are: [0004] 1) Use a f...

AI Technical Summary

Problems solved by technology

[0006] There is also a wringer on the market, such as image 3 , using a squeeze-drying device with a thick feed section and gradually thinner rear section, the cleaned film enters the feed hopper 12', and the motor 13' drives the reducer 14' to drive the screw 15' to rotate, because the screw 15' feeds The first stage screw is relatively thick, and there are more films entering, and the rear stage screw gradually becomes thinner. After the film is extruded, the water will be discharged in the drain hole of the barrel 16'. Such a structure has a low moisture content in extrusion, but it is easy to cause screw The twisting and breaking of the screw, and the extrusion and friction of the screw can easily cause the head of the screw to heat up, so that the film is extruded in a molten state, resulting in degradation of the film and poor performance, which is not conducive to the processing of the subsequent process

Images