Device for automatically filtering cast ingot metal slag

The utility model relates to a device for automatically filtering cast ingot metal slag. The device comprises a filter screen assembly, a filter screen frame, a filter screen pressing piece, a rotating arm, a bearing seat, a slag pouring swing air cylinder, a lifting air cylinder, a nut block, a guide rod, a ball screw, a speed reducer, a stepping motor and a rack, the filter screen is fixed on the filter screen frame, one end of the rotating arm is fixedly connected with the filter screen frame, the other end of the rotating arm is connected with an output shaft of the slag pouring swing cylinder, a cylinder body of the slag pouring swing cylinder is fixedly connected with the bearing seat shell, and the tail end of a piston rod of the lifting cylinder is connected with the bearing seat through a screw. One end of the ball screw is connected with an output shaft of a speed reducer connected to the stepping motor through a coupler. The automatic slag removal device can realize automatic slag removal, avoids t