Plastic crusher

The utility model relates to the technical field of plastic disintegrators. The utility model is designed to take convenience for processing knife disks. The utility model comprises a material feeding hopper, a knife seat box, a machine seat, a motor, a transmission belt, etc. The utility model is characterized in that knife disks for movable knives can be combined to be fixed on a main shaft by a detachable mode; every knife disk is staggered with a definite angle mutually; a knife disk which uses a square as a base shape is fixed with a movable knife; the movable knife forms a definite separation angle with a ridial direction. The utility model has the characteristics of high efficiency, energy saving, convenience, facility, and very low noise. The utility model is suitable to be popularized and used in the industry of plastic processing.