VALVE DEVICE

WIPO Patent Application WO/2024/061190

A1

Disclosed is a valve device, comprising a valve stem assembly (10), wherein the valve stem assembly (10) comprises a valve stem (11), a piston assembly (12) and a limiting member, the valve stem (11) comprising a hole portion, and at least part of the piston assembly (12) being located in a first hole (16) of the hole portion; the valve stem assembly (10) is provided with a sealed cavity (30), and a wall defining the sealed cavity comprises part of a wall of the hole portion and a first end portion (13) of the piston assembly (12); in the axial direction of the valve stem assembly (10), the limiting member is located on one side of the piston assembly (12), and the sealed cavity (30) is located on the other side of the piston assembly (12); and in the axial direction of the valve stem assembly (10), the limiting member and a second end portion (14) of the piston assembly (12) are arranged in contact with each other or spaced apart, alternatively, the limiting member is fixedly connected to the piston assembly (12). The present application is conducive for limiting the displacement or displacement amount of the piston assembly (12), thereby preventing the piston assembly from abutting against other components and causing damage to same, and thus prolonging the service life of the valve device.

JPH07151249	SOLID SUBSTANCE SEPARATING DEVICE
WO/1997/031211	EXTERNAL VALVE OPERATING MEANS
WO/2010/118510	VALVE ASSEMBLY

WANG GUOXIN (CN)
GAN ZHONGYUAN (CN)
ZHANG WEI (CN)
SUN YUANYUAN (CN)

PCT/CN2023/119604

March 28, 2024

September 19, 2023

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ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO LTD (CN)

F16K5/06

WO2007036731A1

2007-04-05

CN114439964A	2022-05-06
CN114439963A	2022-05-06
CN215763388U	2022-02-08

UNITALEN ATTORNEYS AT LAW CO., LTD. (CN)

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