Title:
AIR NON-RETURN PRESSURE-RELIEF DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/127707
Kind Code:
A1
Abstract:
Disclosed is an air non-return pressure-relief device, comprising a non-return system, a pressure-relief system and a changeover system which are communicated in sequence, wherein the non-return system comprises a connecting pipe and an air one-way valve communicated with one end of the connecting pipe; the pressure-relief system comprises an energy-gathering pressure-relief chamber communicated with the other end of the air one-way valve; and the energy-gathering pressure-relief chamber is connected to the changeover system via a transverse arm of a Tee-shaped three-way pipe, and a vertical arm of the Tee-shaped three-way pipe is connected to an air pressure sensor. By using the air non-return system, the pressure-relief system and the changeover system, the present invention not only guarantees the controllability and security of air, but also guarantees the air tightness of the device; and meanwhile, avoids the pollution of air and medicine liquor due to the light ray irradiation and the back flow of air.
Inventors:
TIAN WANBAO (CN)
Application Number:
PCT/CN2014/072052
Publication Date:
August 28, 2014
Filing Date:
February 13, 2014
Export Citation:
Assignee:
SHENZHEN WANJUYUAN TECHNOLOGY CO LTD (CN)
International Classes:
A61M5/142; A61M5/155
Foreign References:
| CN101820935A | 2010-09-01 | |||
| CN2278485Y | 1998-04-15 | |||
| US4004575A | 1977-01-25 | |||
| CN201244245Y | 2009-05-27 | |||
| CN103100125A | 2013-05-15 | |||
| CN203139248U | 2013-08-21 | |||
| CN201510595U | 2010-06-23 | |||
| US20030208158A1 | 2003-11-06 |
Attorney, Agent or Firm:
SHENZHEN ZHONGYI PATENT AND TRADEMARK OFFICE (CN)
深圳中一专利商标事务所 (CN)
深圳中一专利商标事务所 (CN)
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