Frist, waste plastic granulator in the screw loose retreat, why the front part of the barrel vibration is very severe, how to deal with?
(1) Main reasons
① Bearing wear of pre-plastic screw drive engine.
② Bolts of the front barrel are loose.
③The screw and screw head are not fastened and are loose.
(2) Treatment measures
① Check whether the pre-plastic engine bearing is worn. Usually, most of this phenomenon is caused by bearing wear. Worn bearings should be replaced.
② Check whether the bolts of the front barrel are fastened, and tighten them well if they are loose.
③ Remove the front barrel and then check whether the screw and screw head installation is good, fastening installation.

Second, why does the screw not retreat when the waste plastic pelletizer plasticizes the material? How should it be handled?
(1) Main reasons
①The temperature control of the plastic pelletizer barrel fails, and the temperature displayed by the instrument is not consistent with the actual temperature in the barrel. When the temperature of the barrel is too low because the material can not be well plasticized and the viscosity is large, ②the electric motor of the screw transmission can not be started due to overload.
②The hopper is short of material or the feeding mouth is blocked.
③ The backpressure valve is not adjusted properly so that the screw back pressure is too large.
④The pre-plastic control action solenoid valve ring is burned out.
⑤ reversing valve action failure.

Waste Plastic Granulator Video:

(2) Treatment methods
① Check whether the actual temperature of the barrel is too low and whether the temperature displayed on the instrument is consistent with the actual temperature in the barrel. If not, check whether the temperature control is out of order, and repair or replace it in time.
② Check whether the hopper is short of material or the feeding mouth is blocked, and timely supply material to the hopper or dredge the feeding mouth.
③ Properly reduce the screw backpressure.
④Check whether the reversing valve is damaged or out of action, and repair or replace it in time.
⑤ Check whether the coil of the pre-plastic control action solenoid valve is burned out, and repair or replace it in time.