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Troubleshooting of plastic granulator

Source: Time:2020-05-08 10:33:10 views:

Plastic granulator plays an important role in processing waste plastic film, woven bag, agricultural convenience bag, basin, barrel, beverage bottle, furniture, daily necessities, etc.
Plastic granulator plays an important role in processing waste plastic film, woven bag, agricultural convenience bag, basin, barrel, beverage bottle, furniture, daily necessities, etc. However, some small faults are inevitable in the use of plastic granulator, which requires the staff to master the troubleshooting methods of these small faults.
1. Screw operates normally, but does not discharge
The feeding of hopper is not continuous; the feeding port is blocked by foreign matters or "bridging"; the metal hard objects falling into the screw slot block the screw slot and cannot feed normally;
Treatment method: increase the feeding amount to make the screw feeding of the plastic granulator continuously stable; stop the machine to remove the foreign matters in the material mouth and eliminate the phenomenon of "bridging"; if it is confirmed that there are metal foreign matters falling into the screw slot, stop the machine immediately to remove the screw and remove the metal foreign matters.
2. Discharge from vent
Reasons: raw materials are not clean enough with impurities; feeding speed is too fast to make screw extrusion unstable; plasticizing temperature is not enough to make screw extrusion problem.
Treatment method: clean the raw materials before feeding or replace the filter screen; reduce the feeding amount to make the plasticizing stable screw extrude smoothly; improve the plasticizing temperature (the temperature should not be too high, so as to prevent the burn of plastic and affect the production quality).
The main motor rotates, but the screw does not
Cause: the transmission V belt is loose, worn and slipping; the safety key is loose, falling off or disconnected.
Treatment: adjust the center distance of V-belt, tighten the belt, or replace the new V-belt; check the safety key, analyze the cause of fracture, and replace the safety key.
After the plastic pelletizing unit is used or stopped, we should make sure that the electrical control cabinet is powered off. If the shutdown time is too long, it is necessary to wipe and clean the whole body of the plastic granulation unit, and the smooth surface of the parts shall be coated with antirust oil and covered with a cloth.

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