Miniature anti-explosion pneumatic reversing valve with redundant anti-clamping stagnation structure

By introducing anti-jamming components and misalignment damping mechanisms into the miniature pneumatic directional valve, the jamming problem of the miniature pneumatic directional valve under harsh working conditions is solved, achieving efficient dynamic self-cleaning and stable operation, and improving the reliability and safety of the system.

CN122236849APending Publication Date: 2026-06-19ALSEC (JIANGSU) INTELLIGENT TECH CO LTD
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Patent Information

Application Number
CN202610612416.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-07
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing miniature pneumatic directional valves are prone to jamming under harsh operating conditions, resulting in reduced directional accuracy and response speed, impaired sealing performance, and impact on system stability and safety.

Method used

It adopts anti-jamming components, including an energy storage spring, a vibration generating mechanism, and a misalignment damping mechanism. It releases energy through energy storage, loosens jammed objects through vibration, and consumes relative displacement energy using the misalignment damping mechanism. Combined with the intelligent switching function of the inclined sealing ring, it achieves dynamic self-cleaning.

Benefits of technology

It effectively prevents and releases jamming, maintains the valve's high responsiveness and sealing performance, reduces contaminant deposition, and improves system reliability and safety.

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Abstract

The invention relates to the technical field of reversing valves, in particular to a miniature explosion-proof pneumatic reversing valve with a redundant clamping stagnation prevention structure, which comprises a shell and a valve rod, an air channel is formed in the shell, and the valve rod is arranged in the shell in a sliding manner; the pneumatic piston is connected to one end of the valve rod and used for driving the valve rod to reciprocate; the valve element is arranged on the valve rod in a sliding and sleeving mode and located in the air channel; the clamping stagnation preventing assembly is connected between the valve rod and the valve element and comprises a positioning disc fixedly connected to the surface of the valve rod and an energy storage spring arranged outside the valve rod in a sleeving mode, and the two ends of the energy storage spring abut against the positioning disc and the valve rod respectively. When the valve element is blocked in the gas circuit, the valve rod can overcome resistance of the anti-blocking assembly to continue to move relative to the valve element and enable the anti-blocking assembly to store energy, and when the stored energy reaches a threshold value, the anti-blocking assembly releases the energy to drive the valve element to generate impact movement.
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