automatic screw cleaning machine, a new high-pressure water washing process, has the advantages of safety, efficiency, environmental protection, and no damage to the screw compared with the traditional screw cleaning method, and is applicable to the screw cleaning of modified plastics, color masterbatch, rubber, powder coating and other extruders. The screw cleaning machine can clean the screw 360 degrees without dead angle, and can effectively remove the adhesion, black spot carbonization and corrosion layer. Clean screw can reduce the probability of black spot carbonization and improve product quality