Title:
ASSEMBLY FOR PREVENTING CLAMPING STAGNATION OF VALVE ROD, AND VALVE STRUCTURE AND METHOD FOR PREVENTING CLAMPING STAGNATION OF VALVE ROD
Document Type and Number:
WIPO Patent Application WO/2023/025163
Kind Code:
A1
Abstract:
Disclosed are an assembly for preventing clamping stagnation of a valve rod, and a valve structure and method for preventing clamping stagnation of a valve rod. The assembly for preventing clamping stagnation of a valve rod comprises a rigid ring (5-1) and an elastic ring (5-2). The rigid ring is coaxially sleeved in the elastic ring, and the inner wall of the rigid ring is of a straight cylindrical structure. A valve rod (6) can move up and down along the inner wall of the rigid ring under the guidance of the rigid ring and forms a sliding pair together with the rigid ring. The joint between the rigid ring and the valve rod is closed. The assembly for preventing clamping stagnation of a valve rod is simple in structure, convenient to manufacture, and suitable for most valves having elongated valve rod structures.
Inventors:
QIAN JINYUAN (CN)
MU JUAN (CN)
LIN ZHENHAO (CN)
JIN ZHIJIANG (CN)
MU JUAN (CN)
LIN ZHENHAO (CN)
JIN ZHIJIANG (CN)
Application Number:
PCT/CN2022/114333
Publication Date:
March 02, 2023
Filing Date:
August 23, 2022
Export Citation:
Assignee:
UNIV ZHEJIANG (CN)
International Classes:
F16K17/22; F16K47/04
Foreign References:
| CN101216114A | 2008-07-09 | |||
| CN208605683U | 2019-03-15 | |||
| CN113738925A | 2021-12-03 | |||
| CN2445148Y | 2001-08-29 | |||
| CN212718022U | 2021-03-16 | |||
| CN204387424U | 2015-06-10 | |||
| DE202015104716U1 | 2015-10-09 | |||
| JP2011002031A | 2011-01-06 | |||
| JP2012149599A | 2012-08-09 |
Attorney, Agent or Firm:
HANGZHOU QIUSHI PATENT OFFICE CO., LTD. (CN)
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