Raw material crushing and grading device

The utility model relates to a medicine production device capable of crushing, grinding and grading medicine raw materials and reworking unqualified raw materials, in particular to a raw material crushing and grading device which comprises a grading box, a grinding box and a crushing box, and the upper surface of the grading box is fixedly connected with the lower surface of the crushing box. A servo motor a drives a crushing roller to crush medicine raw materials, a servo motor b drives a grinding disc a to rotate to grind the medicine raw materials, the ground raw materials conforming to the particle size fall into the upper surface of a filter plate through through holes, a vibration motor drives a discharging plate, the filter plate and a screening frame to vibrate, and the medicine raw materials larger than mesh holes of the filter plate are left on the upper surface of the filter plate; and the medicine raw materials smaller than the meshes in the upper surface of the filter plate fall into the discharg