Classified screening type mine ore pulverizer

The utility model discloses a graded screening type mine ore pulverizer, which relates to the technical field of ore pulverizing and comprises an ore pulverizing box, a first motor is fixedly mounted at the top of the ore pulverizing box, and a first screening plate, a second screening plate and a third screening plate are sequentially connected in the ore pulverizing box from top to bottom in a sliding manner. An extrusion plate is fixedly mounted on the inner wall of the ore grinding box and located above the first screening plate, and a feeding pipe is fixedly mounted on the top of the ore grinding box and located on the left side of the first motor. According to the ore grinding device, the first motor is started to drive the first rotating shaft to rotate, the first rotating shaft drives the grinding plate to rotate, the grinding plate drives the connecting plate to rotate, and ore in the ore grinding box is ground into ore powder of different particle sizes through cooperation of the grinding ball and t