Cleaning machine for screw cylinder of extruder

The utility model relates to a cleaning machine for a screw cylinder of an extruder, comprising a vehicle frame and wheels at the bottom of the vehicle frame; a rack is arranged on the vehicle frame; the upper part of the rack is provided with a long screw rod; the long screw rod is driven by a motor; the suspended head of the long screw rod is provided with a brush; the rack comprises a base rack and a movable rack; the movable rack is arranged at the upper part of the base rack; a steel wire brush is used as the brush; the wheels at the bottom of the vehicle frame can rotate freely; a disc is arranged between the motor and the long screw rod; the center of the motor is connected with the center of the disc; and the long screw rod is arranged at the disc edge. The screw cylinder can be cleaned conveniently and quickly; the rack can move up and down; the position of the rack can be adjusted according to the position of the screw cylinder; when the screw cylinder does not need to be disassembled, the internal