A one-way valve for detection

CN224283575UActive Publication Date: 2026-05-26邵华
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
邵华
Filing Date
2025-07-18
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

The sealing rings in existing detection valves are prone to irregular deformation due to the excess space between the annular wall and the installation step, resulting in poor air intake or inconsistent reset, which leads to decreased sealing performance and short service life.

Method used

A one-way valve for detection was designed. By setting an annular retaining wall and a sealing groove in the valve body, the sealing ring and the annular wall jointly limit the movement. The sealing ring is limited in both the radial and axial directions to avoid irregular deformation. The frustoconical connecting wall and transition annular wall structure enhance the sealing performance and reset consistency.

Benefits of technology

It achieves improved sealing performance and extended service life. The sealing ring maintains smooth air intake during normal compression, resulting in better sealing performance and good repositioning consistency.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224283575U_ABST
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Abstract

This utility model provides a one-way valve for testing, comprising: a valve body, which includes a pipe body and a retaining wall inside the pipe body; the retaining wall includes a spaced top wall and a bottom wall, and a side wall connecting the top wall and the bottom wall; the side wall includes a first annular wall, a first transition annular wall, and a second annular wall from top to bottom, with the inner diameter gradually increasing; a valve core, which has a connecting wall at its bottom end, a sealing groove on the outer periphery of the connecting wall, a frustum-shaped top surface that abuts against the first transition annular wall and forms a sliding connection, and the outer surface of the connecting wall abuts against the second annular wall and forms a sliding connection; a valve stem latch, which is fitted onto the top end of the valve stem to form a snap-fit ​​interference fit and a sliding connection with the pipe body; a spring, which is fitted onto the valve stem and abuts against the locking body and the retaining wall at both ends; and a sealing ring, which is installed in the sealing groove and whose size matches the size of the sealing groove, and abuts against the second annular wall to form a sealing sliding connection. Compared with related technologies, the one-way valve for testing of this utility model has stable sealing performance and a long service life.
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