Limiting device for valve plate machining

The utility model discloses a limiting device for valve plate processing, which comprises a plate body, a bottom plate is arranged below the plate body, the left end and the right end of the upper surface of the bottom plate are fixedly connected with vertical plates, the top ends of the vertical plates are fixedly connected with joints, and the inner sides of the vertical plates are provided with limiting components. According to the limiting device for valve plate machining, through cooperation of a plate body, an abutting plate, a vertical plate, a connector and a limiting assembly, an operator applies force to pull a circular ring to the outer side, so that an inserting rod is separated from a second supporting plate, after force is applied to a handle, a circular plate, a clamping plate and the plate body are selected, and the upper surface and the lower surface of the plate body are reversed, the acting force on the circular ring is released, and then the circular ring is clamped; and a tension spring r