Liquid outlet plugging device for aluminum alloy casting

The utility model discloses a liquid outlet blocking device for aluminum alloy casting. The casting furnace comprises a casting furnace body and a blanking cap, a liquid discharging pipe communicatedwith the interior of the casting furnace body is arranged on the lower surface of the casting furnace body; two fixing plates are fixedly mounted on the left side of the lower surface of the casting furnace body, bearings are clamped to the opposite side faces of the two fixing plates, the outer surfaces of the two ends of a rotating shaft are sleeved with the two bearings correspondingly, a rotating plate is fixedly connected to the outer surface of the rotating shaft, and the lower surface of the rotating plate is fixedly connected with the upper surface of a connecting plate. The blocking cover rotates around the fixing plate to be attached to the liquid discharging pipe; the slot is aligned to the plugboard, so that the plugboard is inserted into the slot; meanwhile, the iron block isattracted through magnetis