Title:
DUAL-SEALING VALVE
Document Type and Number:
WIPO Patent Application WO/2006/066489
Kind Code:
A1
Abstract:
This invention provides a dual-sealing valve, which is used under the condition that the controlled liquid is flowed in double-way, and can realize opening function under less opening power. The dual-sealing valve includes valve body with in-outlet, and two sealing elements disposed in a valve cavity which is in the valve body and matched with the inlet and the outlet. A linkage synchronization unit is disposed between the two sealing elements, and a pressure relieving device is connected between the valve cavity and the in-outlet. The valve reduces not only the opening-closing moment greatly, but also the volume of the outside operation device and the requirement of the power source, thus the operation speed of the valve and the service life of the valve are improved. Moreover, the valve has realized self-dual-sealing in double-way, and achieved no damage rapid switch by the linkage synchronization unit. Thus the reliability of the inside operation of the valve is improved, and the cost of the valve is reduced. This invention applies especially in the environment of large flux and high pressure, which requires good sealing performance, intrinsically safe, and frequently rapid switch.
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Inventors:
PAN SHIYONG (CN)
Application Number:
PCT/CN2005/002189
Publication Date:
June 29, 2006
Filing Date:
December 14, 2005
Export Citation:
Assignee:
PAN SHIJUN (CN)
TANG LIANSHENG (CN)
PAN SHIYONG (CN)
TANG LIANSHENG (CN)
PAN SHIYONG (CN)
International Classes:
F16K1/00; F16K31/44; F16K39/02
Foreign References:
| CN2572148Y | 2003-09-10 | |||
| US6543474B2 | 2003-04-08 | |||
| CN2396241Y | 2000-09-13 | |||
| JPH10339377A | 1998-12-22 | |||
| JPH10110834A | 1998-04-28 | |||
| EP0637707A1 | 1995-02-08 |
Attorney, Agent or Firm:
Chengdu, Hongqiao Patent Law Office (3rd Block Chaoyang Garden, No. 2 Yongfeng Roa, Chengdu Sichuan 1, CN)
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