Direct-acting two normally open electromagnetic valve

By press-fitting the irregularly shaped magnetic shielding tube to the valve cover and directly connecting the moving iron core to the valve stem, the problems of complex assembly and non-compact structure of existing direct-acting normally open solenoid valves are solved, achieving the effects of simplified assembly, improved response speed and control accuracy.

CN224550840UActive Publication Date: 2026-07-24CHANGZHOU HENGLI FLUID TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGZHOU HENGLI FLUID TECH CO LTD
Filing Date
2025-09-28
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

The existing threaded connection of direct-acting normally open solenoid valves leads to complex assembly, easy loosening, insufficient sealing reliability, and non-compact structure, making it difficult to meet the requirements of miniaturization.

Method used

The design adopts an integrated approach where the irregularly shaped magnetically shielded tube insert is press-fitted to the valve cover and the moving iron core is directly connected to the valve stem. This eliminates the traditional threaded connection and simplifies the assembly process by using rigid contact and fixed connection. It also eliminates transmission gaps and improves response speed and structural compactness.

Benefits of technology

The assembly process has been simplified, the structural compactness and vibration resistance of the solenoid valve have been improved, the action sensitivity and control accuracy have been enhanced, the risk of jamming has been reduced, and the service life has been extended.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224550840U_ABST
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Abstract

The utility model relates to solenoid valve technical field especially relates to a direct action two normal open solenoid valve, include: the valve body one side is equipped with the air inlet, the other side is equipped with the air outlet, and the middle part is equipped with the valve port, and the valve port intercommunication air inlet and air outlet, diaphragm assembly one end stretches into the valve port, and the center is equipped with the gas nozzle that penetrates, intercommunication valve port, valve cover, install on the valve body one side that is equipped with the valve port, valve rod installs on diaphragm assembly, glue stopper, place between valve rod and gas nozzle, static core, cover on valve rod with valve cover abut, moving iron core, with valve rod fixed connection, be in static core far away from the one side of valve cover, with static core coaxial, first spring, one end abut static core, one end abut moving iron core, magnetic separation pipe, cover on static core, close to valve cover one end is in echelon, abut valve cover and static core, coil insert, cover on moving iron core with magnetic separation pipe fixed connection. The utility model effectively optimizes the structure, improves response speed.
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