Pulverizer facilitating self-cleaning of discharge port

The utility model relates to the technical field of flour mill equipment, in particular to a flour mill convenient for self-cleaning of a discharge hole, which comprises a box body, a feed hopper is fixedly arranged at the top end of one side of the box body, a lower grinding plate is fixedly arranged on the inner wall of the upper part of the box body, and air cylinders I are symmetrically and fixedly arranged on the inner wall of the top end of the box body; the output end of the first air cylinder is fixedly connected with a support, an upper grinding block is rotationally arranged at the bottom end of the support, a plurality of cavities are formed in the inner wall of the bottom end of the box in an annular array mode, a plurality of discharging pipes are fixedly embedded in the bottom end of the box, and the top ends of the discharging pipes communicate with the inner spaces of the adjacent cavities. A plurality of fixing seats are arranged on the inner wall of the lower portion of the box body in an an