A gate valve

Abstract

The utility model provides a gate valve, including the valve body, the valve body both ends are equipped with medium inlet and medium outlet, the valve body is equipped with the valve rod in still, the bottom of valve rod is equipped with the valve plate, the outer periphery of valve rod is equipped with sealing component, sealing component includes the sealing ring, the sealing ring is equipped with fixed base body in, the sealing ring outside fixed base body forms the protruding part with the sealed connection of valve rod outer wall, the protruding part is triangular convex and sets up. Through setting up fixed base body in sealing ring, make sealing ring keep stable support effect in the process of valve rod movement, avoid the deviation because of uneven stress of packing, thereby promote the overall sealing stability at valve rod. The protruding part that sealing ring outside forms with valve rod outer wall sealed connection can continuously keep sealing surface lamination when valve rod moves up and down, reduce the risk that traditional packing is partial loose or failure after being pressed, improve the reliability of sealing.

Images