Anti-return stop valve of low-wear operation device

Abstract

The invention discloses an anti-return stop valve of a low-wear operation device. The anti-return stop valve comprises a valve body, a water inlet, a water outlet, a movable cavity, a square hole, a connecting block, an electric push rod, a fixed block, a first nut, a first screw, a square rod, a pressure ring, a rubber sealing base plate, a stopping plug, a rubber sealing ring, a short rod, a hand wheel, an inserting rod, a guide strip, a control switch, a battery box, a battery, a box cover, a strengthening rib plate, a pressure block, a second screw, a second nut and a guide groove. The anti-return stop valve is reasonable in structure. In the stopping process, the water inlet can be closed through the stopping plug and the rubber sealing ring; in the flow starting process, the rubber sealing base plate can press and close the bottom end of the square hole, the rubber sealing ring, the stopping plug and the rubber sealing base plate are not in direct friction with the valve body inthe moving process, wear can be effectively reduced, and the service life of the rubber sealing ring, the stopping plug and the rubber sealing base plate is prolonged.

Description

technical field [0001] The invention relates to a cut-off valve, in particular to a low-wear operating device anti-retreat cut-off valve, which belongs to the technical field of cut-off valve applications. Background technique [0002] Valves are the control components in the fluid conveying system, with the functions of cut-off, adjustment, diversion, prevention of reverse flow, pressure stabilization, diversion or overflow pressure relief; valves can be used to control air, water, steam, various corrosive media, mud , oil, liquid metal and radioactive media and other types of fluid flow. [0003] At present, when the globe valve is in use, the hand wheel is generally turned to move through the thread to realize opening and closing. When moving, friction will occur between the seal and the valve body, which may cause wear and reduce the service life; , the water pressure of the water flow may be relatively large, and the general stop valve may lack a limit structure, which...

AI Technical Summary

Problems solved by technology

[0003] At present, when the globe valve is in use, the hand wheel is generally turned to move through the thread to realize opening and closing. When moving, friction will occur between the seal and the valve body, which may cause wear and reduce the service life; , the water pressure of the water flow may be relatively large, and the general stop valve may lack a limit structure, which may break open the stop, causing the stop plug at the stop to retreat

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