Title:
BALL VALVE WITH MICRO TORQUE
Document Type and Number:
WIPO Patent Application WO/2018/210037
Kind Code:
A1
Abstract:
Provided is a ball valve with a micro torque. A check valve (17) is provided inside a valve body (11). A transmission device is connected and fixed to a ball body (12). When the ball body rotates, a valve seat (10) can be instantly pushed away to separate from the ball body. When rotation of a valve handle (2) drives a valve gate to open, the check valve opens, thereby realizing relief of pressure in a center cavity (19). The transmission device enables the valve seat to separate from the ball body, such that friction of a sealing surface is prevented, thereby ensuring favorable sealing performance while reducing opening and closing torques of the valve gate.
Inventors:
MAO LINGFENG (CN)
ZHANG QINGSHUANG (CN)
SHI JIANHAI (CN)
XU ZHIXIN (CN)
ZHANG QINGSHUANG (CN)
SHI JIANHAI (CN)
XU ZHIXIN (CN)
Application Number:
PCT/CN2018/078431
Publication Date:
November 22, 2018
Filing Date:
March 08, 2018
Export Citation:
Assignee:
JIANGSU SHENTONG VALVE CO LTD (CN)
International Classes:
F16K5/08; F16K5/06; F16K27/06
Domestic Patent References:
| WO2009026737A1 | 2009-03-05 |
Foreign References:
| CN206943481U | 2018-01-30 | |||
| CN107084259A | 2017-08-22 | |||
| CN201059365Y | 2008-05-14 | |||
| CN205315765U | 2016-06-15 | |||
| RU2616435C1 | 2017-04-14 | |||
| CN202402688U | 2012-08-29 |
Attorney, Agent or Firm:
NANTONG YONGTONG PATENT AGENCY (CN)
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