Electro-hydraulic electromagnetic commutating valve with position feedback

CN224339247UActive Publication Date: 2026-06-09SHANGHAI LIXIN HYDRAULIC
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI LIXIN HYDRAULIC
Filing Date
2025-05-16
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing electro-hydraulic solenoid directional valves lack position feedback capability, resulting in poor system reliability under high pressure, high temperature or harsh environments, limiting their application scope, especially in the field of precision machinery.

Method used

A magnetic pressure-resistant switch is added to the main valve body of the electro-hydraulic solenoid directional valve to sense the movement of the left and right valve cores. The position information of the valve cores is fed back through the magnetic pressure-resistant switch, so as to accurately measure the opening position of the valve cores.

Benefits of technology

It improves the system reliability of electro-hydraulic solenoid directional valves and expands their application range, especially in harsh environments such as high pressure and high temperature.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a kind of electro-hydraulic electromagnetic reversing valve with position feedback, including main valve part and the two electromagnetic reversing valves of left and right ends located in the main valve part, the main valve part includes main valve body, valve core hole is opened in the main valve body, left valve core and right valve core are equipped in the valve core hole.The utility model adds the magnetic pressure-resistant switch in contact with the top of left valve core or right valve core on the upper end surface of main valve body, the movement of left valve core or right valve core can be sensed, and its left and right reversing condition is monitored;Device structure is simple, processing is convenient, it is favorable to improve device overall quality and reduce cost, also convenient to load and unload and maintenance.
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