A solenoid valve

CN114278736BActive Publication Date: 2026-05-26ZHONGSHAN HUAJIE INTELLIGENT TECH CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHONGSHAN HUAJIE INTELLIGENT TECH CO LTD
Filing Date
2021-12-15
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In the existing technology, a gas solenoid valve cannot effectively prevent gas leakage when one of the valves fails, so two gas solenoid valves need to be installed to avoid leakage, which results in the gas flow path needing to be lengthened.

Method used

Design a solenoid valve that controls two sealing plugs through a solenoid coil assembly. By utilizing electromagnetic attraction and the cooperation of elastic elements, the sealing plugs are automatically reset when the solenoid coil is de-energized, thus preventing gas leakage.

Benefits of technology

It enables the control of gas flow with a single electromagnetic coil assembly, preventing gas leakage, simplifying the structure, and avoiding the need to lengthen the gas flow path.

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Abstract

This invention proposes an electromagnetic valve. A fixed iron core and a magnetic core are disposed within a mounting cavity, forming a first gap between the fixed iron core and the magnetic core. A sleeve is disposed within the mounting cavity and extends outward from it. One end of the sleeve is connected to the magnetic core, and the other end has a first sealing plug. A cavity is formed within the sleeve. A main iron core is movably mounted within this cavity. A second gap is formed between one end of the main iron core and the magnetic core, and the other end extends towards the first sealing plug. A second sealing plug is located at the end of the main iron core extending towards the first sealing plug. When the electromagnetic coil assembly is de-energized, if the first sealing plug fails to seal the gas outlet due to a malfunction, the main iron core can be pushed by a first elastic element to return the second main valve plug to the closed position, thus sealing the gas outlet and preventing leakage.
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