Automatic feeding device of ball mill

The utility model relates to the technical field of gold ore grinding, and discloses an automatic feeding device of a ball mill, which comprises a feeding device, the feeding device comprises a box body, a protective plate, a connecting spring, a crushing wheel, a screening plate, a rolling shaft, an air cylinder, a push plate, a mounting box, a motor II and a baffle plate, a feeding table is welded at the middle end of the top surface of the box body, and the protective plate is mounted at the top of the feeding table; the rolling shaft is sleeved with the bottom of the screening plate, the air cylinder is fixedly installed on the top of the inner wall of the side face of the box body, the push plate and the output end of the air cylinder are fixedly installed, and the baffle is fixedly installed at the bottom of the screening plate. According to the automatic feeding device of the ball mill, crushed gold ore falls onto the screening plate, the rolling shaft is driven by the second motor to move, the qualifi