Automatic plastic pulverizer

The utility model relates to the technical field of plastic processing equipment, in particular to an automatic plastic pulverizer. According to the technical scheme, the filter comprises a shell, a plate type filter screen is arranged in the shell, the two ends of the plate type filter screen are both installed in U-shaped grooves in U-shaped clamping plates, a protruding block is installed on one side of the outer wall of each U-shaped clamping plate, the other end of each protruding block is installed in a groove, a through hole is formed in the surface of each protruding block, a limiting column is installed in each through hole, and the limiting columns are arranged in the limiting columns. The two ends of the limiting column are installed at the top and the bottom of the groove correspondingly, springs are arranged between the top and the bottom of the groove and the protruding block correspondingly, a first connecting rod is installed at the bottom of the U-shaped clamping plate, a second connecting ro