Putty powder refining equipment

The utility model belongs to the technical field of putty powder, and discloses putty powder refining equipment. Putty powder refining equipment comprises a support, a hopper is fixedly installed on the inner side of the middle of the support in a penetrating mode, a first annular gradient grinding plate is fixedly connected to the interior of the hopper, a screw rod is movably connected to the interior of the hopper, and a second annular gradient grinding plate is fixedly connected to the exterior of the screw rod. The outer part of the screw rod is fixedly connected with a discharging swing plate; a second annular gradient grinding plate rotates to be matched with a first annular gradient grinding plate through rotation of a screw rod, so that multi-stage grinding and refining of putty powder are achieved, the quality and speed of refining and grinding of the putty powder are improved, and meanwhile, a discharging swing plate drives the refined putty powder to be discharged from the inner side of a guide pl