Air flow on-off valve

Abstract

The utility model belongs to the technical field of gas circuit control valve, specifically provides a kind of airflow on-off valve. To solve the problem that the on-off sealing ring of existing airflow on-off valve appears dislocation deformation in the process of use, the airflow on-off valve of the utility model includes valve body assembly and valve core assembly. Valve body assembly has air inlet, air outlet and stop face, and the stop face is located between air inlet and air outlet on the flow path of airflow. Valve core assembly is set in valve body assembly and includes valve plug and on-off sealing ring, and the end of valve plug close to stop face is provided with annular flange extending radially outward, and the side of annular flange facing stop face is provided with limiting protrusion;The inner side of on-off sealing ring in radial direction is provided with annular groove matched with annular flange, and the sidewall of annular groove close to stop face is provided with fixed groove matched with limiting protrusion, so that annular flange is embedded in annular groove, and limiting protrusion is embedded in fixed groove. The utility model overcomes the above technical problems.

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