Check gate valve

The utility model discloses a check gate valve, which relates to the technical field of gate valves, and comprises a valve body, one side of the valve body is fixedly connected with a liquid outlet pipe, the other side of the valve body is fixedly connected with a liquid inlet pipe, the separated sides of the liquid outlet pipe and the liquid inlet pipe are respectively clamped with a mounting pipe, and a moving rod slides on the inner side of a clamping ring so as to drive an arc-shaped block to slide. The arc-shaped block slides towards one side of the valve body, then liquid can enter the valve body from the liquid inlet pipe and enter the mounting pipe from the liquid outlet pipe, when the liquid enters the liquid inlet pipe from the liquid outlet pipe, the arc-shaped block slides away from the side of the valve body, then the moving rod is driven to slide on the inner side of the clamping ring, the arc-shaped block abuts against one side of the clamping ring, and then the liquid inlet pipe can be sealed;