Split thread cartridge pressure reducing valve

CN224339248UActive Publication Date: 2026-06-09SHANGHAI LIXIN HYDRAULIC
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Patent Information

Authority / Receiving Office
CN · 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 split-type pressure reducing valves have problems with poor sealing and oil leakage, and the spring preload cannot be adjusted, resulting in them failing to work properly under different oil pressure conditions.

Method used

It adopts a split threaded insert structure. By adding a spacer with a stepped hole between the valve sleeve and the regulating sleeve, the two ends of the spacer provide a hard seal between the valve sleeve and the regulating sleeve. The stepped hole limits the valve core, and the spring preload is adjusted by the combination of the adjusting rod and the spring.

Benefits of technology

It improves the working reliability and sealing performance of the valve core, avoids deformation of the spacer, realizes the adjustability of the spring preload, and ensures that the valve works normally under different oil pressure conditions.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224339248U_ABST
    Figure CN224339248U_ABST
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Abstract

This utility model provides a split-type threaded cartridge pressure reducing valve, comprising a split, coaxially arranged valve sleeve, an adjusting sleeve, and a spacer disposed between the valve sleeve and the adjusting sleeve. The valve sleeve has a valve core hole, within which an axially movable valve core is disposed. The adjusting sleeve has an axially compressible spring, and a first spring seat is disposed between the valve core and the spring. The spacer has a stepped hole. This utility model, by adding a spacer with a stepped hole between the valve sleeve and the adjusting sleeve, provides a hard seal between the two end faces of the spacer and the valve sleeve and the adjusting sleeve. The stepped hole on the spacer limits the movement of the valve core, thus controlling the working stroke of the valve core. Simultaneously, the presence of the stepped hole reduces stress concentration on the spacer, preventing deformation due to stress during the hard seal under pressure. The device has a simple structure, and the main components are easy to manufacture.
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