Regeneration pelletizer for worn-out plastic

Abstract

A machine for regenerating and granulating the used or rejected plastics is composed of exhaust-type extruder, filter, cutting-granulating unit, screw conveyer, drier and air delivering system.

Description

technical field [0001] The invention relates to the technical field of equipment for recycling waste plastics to produce plastic granules. Background technique [0002] At present, most of the waste plastic recycling granulators sold on the market are ordinary granulators. Its structure mainly adopts the structure of extruder + ordinary filter + die head + cooling device + crushing device; or the structure of extruder + ordinary filter + die head + eager air cooling or water cooling. The filter surface of the ordinary filter of these two structures is small, and the material pressure cannot be automatically detected, and it is impossible to accurately judge whether to replace the filter screen, the effect of filtering impurities is not good, and the quality of the regenerated plastic particles is difficult to control. In addition, in the granulator of the above-mentioned first structure, the plastic is drawn into strips through the die head and enters the cooling device, an...

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Problems solved by technology

The filter surface of the ordinary filter of these two structures is small, and the material pressure cannot be automatically detected, and it is impossible to accurately judge whether to replace the filter screen, the effect of filtering impurities is not good, and the quality of the regenerated plastic particles is difficult to control

In addition, in the granulator of the above-mentioned first structure, the plastic is drawn into strips through the die head and enters the cooling device, and is broken into particles after cooling. The cutting surface of the particles is not smooth and regular, and the length of the particles is not easy to control; the second structure When using air-cooled granulator, the chopped particles will fly in the air duct with the high-speed airflow, hit the wall of the tube in a disorderly manner, and smash the plastic particles that have not been completely cooled into flat shapes of various sizes. Particles, the remanufactured plastic particles have uneven particle size and shape, and poor quality, which affects subsequent production and application

However, some water-cooled equipment is usually cumbersome in structure, and it is inconvenient to replace the cutting blades.

In addition, since the filters are all ordinary filters, the filter screen cannot be self-rinsed, and the filter screen needs to be replaced frequently. When the filter screen is replaced, it needs to be shut down, which increases the loss of the filter screen and reduces the production efficiency.

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