Title:
WATER HAMMER PROOF AND SILENT CHECK VALVE
Document Type and Number:
WIPO Patent Application WO/2011/079537
Kind Code:
A1
Abstract:
A water hammer proof and silent check valve comprises a shell (1), a spring (9), a flow guide body (10) and a cowl (11). The flow guide body (10) is installed with flow blocking boards (4, 6) that are projected on an outer surface of the flow guide body (10) and are capable of rotating around installation shafts (3, 7). Several flow blocking boards are arranged in the flow passage in the axial direction of the valve, so that most part of pressure energy and kinetic energy are supported by the flow blocking boards by grading when liquid flows back to the valve, thus ensuring that the water hammer with large energy is divided into multiple water hammers with relatively smaller energy so as to greatly reduce the inner stress of valve bearing parts.
Inventors:
HUANG HONGBIN (CN)
YANG JIYUE (CN)
YANG JIYUE (CN)
Application Number:
PCT/CN2010/070220
Publication Date:
July 07, 2011
Filing Date:
January 15, 2010
Export Citation:
Assignee:
GUANGDONG LIANSU TECH IND CO (CN)
HUANG HONGBIN (CN)
YANG JIYUE (CN)
HUANG HONGBIN (CN)
YANG JIYUE (CN)
International Classes:
F16K47/02; F16K15/02
Foreign References:
| CN2153686Y | 1994-01-19 | |||
| CN2580243Y | 2003-10-15 | |||
| CN2611707Y | 2004-04-14 | |||
| CN2851767Y | 2006-12-27 | |||
| US20040046135A1 | 2004-03-11 | |||
| US20050155645A1 | 2005-07-21 |
Attorney, Agent or Firm:
YOGO PATENT & TRADE MARK AGENCY LIMITED COMPANY (CN)
广州粤高专利商标代理有限公司 (CN)
广州粤高专利商标代理有限公司 (CN)
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