Emptying bin gate

The invention relates to the field of a stirrer, and in particular relates to an emptying bin gate. The emptying bin gate is arranged at the bottom of an emptying bin of a stirrer. The emptying bin gate comprises a movable gate valve plate, a connecting rod, an operating handle and a limiting fulcrum, wherein a discharge hole is arranged at the bottom of an emptying bin; the limiting fulcrum is arranged on one side of the discharge hole; the movable gate valve plate is fixedly connected with one end of the connecting rod, and a board of the movable gate valve plate faces to the discharge hole; the other end of the connecting rod is articulated with one end of the operating handle to form a hinge point; the hinge point is in contact connection with the limiting fulcrum; the middle part of the operating handle is articulated with the external bottom of the emptying bin; and one end at the hinge point on the central line of the connecting rod is higher than one corresponding end of the movable gate valve plate. The emptying bin gate disclosed by the invention realizes emptying without an existing valve, a rotation step has no contact with slurry, and thus no jamming is caused; the operating handle saves force in operation according to a lever principle; and the movable gate valve plate, the connecting rod, the operating handle and the limiting fulcrum form self locking when the emptying bin gate is closed, and no external force is needed.