Low-temperature check valve with guide structure

By designing a guide mechanism and a buffer mechanism in the low-temperature check valve, the problems of offset and impact during the movement of the valve plate are solved, the stable movement of the valve plate and the effective relief of the water hammer effect are achieved, and the service life of the valve body is extended.

CN119687246AInactive Publication Date: 2025-03-25ZHEJIANG PETROCHEMICAL VALVE CO LTD
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Patent Information

Application Number
CN202510205661.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-25
Publication Date
2025-03-25
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Existing check valves are prone to offset and impact during the movement of the valve plate, resulting in a decrease in sealing performance and shortening service life.

Method used

A low-temperature check valve with a guide structure is designed, and the guide mechanism guide valve plate is opened and closed according to a predetermined trajectory, and the water hammer effect is relieved through the buffer mechanism when closed to avoid impact.

Benefits of technology

The guide mechanism ensures the stability and reliability of the valve plate during opening and closing, avoids unnecessary collision between the valve plate and the valve body or other components, extends the service life of the valve body, and reduces impact damage to the valve body by the water hammer effect.

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Abstract

The low-temperature check valve with the guide structure relates to the technical field of check valves and comprises a valve body, a water inlet pipe is fixedly connected to the side wall of the valve body, a sliding rod is slidably connected into the valve body in a penetrating mode, a sliding block is fixedly connected to the outer wall of the sliding rod, a second sliding groove is formed in the inner wall of the valve body, and a second sliding block is fixedly connected to the outer wall of the sliding rod. A guide mechanism is arranged in the valve body so that the valve plate can be guided to be opened and closed according to a preset track in the working process, and a buffering mechanism is arranged in the second sliding groove so that impact of the water hammer effect on the valve body can be relieved when the valve is closed. According to the low-temperature check valve with the guide structure, the limiting rod and the guide mechanism are arranged to ensure that the valve plate is stably and reliably opened and closed according to a preset track, collision is avoided, the sliding process of the damping plate is prolonged through damping oil in the oil storage cavity, the valve plate is reset slowly, collision with a water inlet pipe is avoided, and the sealing performance after closing is guaranteed; and impact faults and damages caused by resetting are reduced.
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