Flow safety valve

By incorporating a water pressure differential drive mechanism with a valve core and a return spring, along with an external sealing ring structure, the leakage problem when the valve core contacts the flow divider cone is solved, thereby improving sealing performance and installation stability and preventing water waste.

CN223549878UActive Publication Date: 2025-11-14ZHEJIANG LINGDIAN PIPE IND CO LTD
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Patent Information

Application Number
CN202422245071.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-12
Publication Date
2025-11-14
Estimated Expiration
2034-09-12

AI Technical Summary

Technical Problem

Existing flow safety valves are prone to leakage during use, especially when there is a gap between the valve core and the flow divider cone or when excessive pressure is applied at the threaded connection, which cannot effectively prevent water waste.

Method used

A flow safety valve was designed. By setting a valve core and a return spring in the valve body, the valve core is driven to slide to seal the water outlet by water pressure difference. A second sealing ring is set between the outer wall of the valve body and the inner wall of the connector to enhance the sealing performance. At the same time, a plug-in end cap and a limit ring structure are adopted to improve the installation stability.

Benefits of technology

It effectively seals the water outlet under water pressure difference, preventing leakage, enhancing the sealing performance between the valve body and the connector, ensuring the normal closure of the water circuit, and avoiding water waste.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN223549878U_ABST
    Figure CN223549878U_ABST
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Abstract

The utility model provides a flow safety valve, and belongs to the technical field of valves. The valve comprises a valve body arranged in a connector, the valve body is cylindrical, a mounting opening is formed in one end of the valve body, a water outlet hole with a conical inner wall is formed in the other end of the valve body, an end cover covering the mounting opening is arranged at the end of the valve body, a water inlet hole communicated with the interior of the valve body is formed in the end cover, and a valve element sliding left and right is arranged in the valve body. The valve element comprises a valve rod, a plug is arranged at the left end of the valve rod, a first sealing ring is arranged outside the plug in a sleeving mode, an abutting seat with a through hole is arranged at the right end of the valve rod, the left end of the abutting seat abuts against a reset spring, the other end of the reset spring abuts against the inner hole wall of the water outlet hole, and when water pressure difference is generated and overcomes the elastic force of the reset spring, the valve element slides leftwards; the right end of the abutting seat does not abut against the left end of the end cover any more, and the first sealing ring on the plug abuts against the inner wall of the water outlet hole. The utility model has the advantages of simple structure, strong sealing performance and the like.
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Citation Information

Patent Citations

  • Flow safety valve

    CN100434781C