Diaphragm compressor oil overflow valve capable of preventing valve rod from being clamped

CN224282888UActive Publication Date: 2026-05-26SICHUAN DACHUAN HYDROGEN ENERGY TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SICHUAN DACHUAN HYDROGEN ENERGY TECHNOLOGY CO LTD
Filing Date
2025-05-22
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

When the overflow valve stem of a diaphragm compressor is started, it is easy for it to come into contact with the piston mating surface, resulting in uneven friction and resistance, which can easily cause jamming, affect the operation and life of the equipment, and even pose a safety hazard.

Method used

The valve stem with a spherical structure forms a line contact with the overflow valve piston, and the overflow pressure is controlled by an elastic element and an external adjustment mechanism. Combined with clearance fit and conical sealing surface, dynamic sealing and uniform friction force distribution are achieved.

Benefits of technology

It effectively prevents valve stem jamming, ensures stable equipment operation, reduces energy consumption, improves operating efficiency, extends equipment life, and avoids seal failure and abnormal pressure.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224282888U_ABST
    Figure CN224282888U_ABST
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Abstract

The utility model discloses a diaphragm compressor oil overflow valve capable of preventing clamping stagnation of a valve rod. The diaphragm compressor oil overflow valve comprises a valve body, the valve rod and a movable contact component. The movable contact part is arranged at the top of the valve rod and is in linear contact with the matching surface of the oil overflow valve piston so as to reduce clamping stagnation caused by uneven distribution of friction force and resistance; the valve rod transmits pressure through an elastic element and is controlled by an external pressure adjusting mechanism so as to dynamically adjust the oil spilling pressure. A sealing connector is arranged at the bottom of the valve body and used for being connected with a diaphragm head oil cavity of the diaphragm compressor, and overflow control over hydraulic oil is achieved through the oil overflow channel. The oil overflow valve is simple in structure and low in manufacturing cost, the problem that a valve rod is prone to clamping stagnation at the moment when the oil overflow valve of the diaphragm compressor is started after oil supplementation is completed can be effectively solved through linear contact of the ball body and the matching face of the oil overflow valve piston, and therefore it is guaranteed that the diaphragm compressor can keep a stable, efficient and safe operation state.
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