Slide valve device and air control valve

The utility model relates to the technical field of railway vehicle air braking, in particular to a slide valve device and an air control valve. The sliding valve device comprises a sliding valve seat and a sliding valve which can slide relatively in the first direction, a valve seat sealing face is arranged on the sliding valve seat, a sliding valve bottom face sealing face attached to the valve seat sealing face in a sealed mode is arranged on the sliding valve bottom face of the sliding valve, and corresponding valve ports are formed in the valve seat sealing face and the sliding valve bottom face sealing face. At least part of the valve seat sealing surface and/or the slide valve bottom surface sealing surface except the position of the valve port is provided with a foreign matter storage groove, and a part of the groove wall of the foreign matter storage groove forms a blocking wall used for blocking foreign matters when the slide valve bottom surface sealing surface and the valve seat sealing surface re