Title:
二重偏心弁
Document Type and Number:
Japanese Patent JP6859233
Kind Code:
B2
Abstract:
A double eccentric valve: a valve seat; a rotary shaft; a valve gear with a rotary shaft base end portion; a motor rotating the shaft via a valve gear; bearings supporting the shaft in a cantilever manner; a return spring giving, to the valve gear, spring force for rotating the shaft in a valve body closing direction; and a full-close stopper to restrict valve gear rotation with the shaft when the valve body is fully closed. When the motor is not driven, the valve gear partially contacts the full-close stopper by spring force, moment acting on the valve gear is caused to act on the rotary shaft with the contact point serving as a fulcrum, the rotary shaft is tilted toward the valve seat with the contact point between the rotary shaft and the bearing serving as a fulcrum, and thus, the valve body is pressed against the valve seat.
Inventors:
Takaki Inagaki
Mamoru Yoshioka
Akihito Kuno
Makoto Fukui
Mamoru Yoshioka
Akihito Kuno
Makoto Fukui
Application Number:
JP2017166650A
Publication Date:
April 14, 2021
Filing Date:
August 31, 2017
Export Citation:
Assignee:
Aisan Industry Co., Ltd.
International Classes:
F16K1/22; F02M26/70; F16K31/53
Domestic Patent References:
| JP2017116011A | ||||
| JP2015218833A | ||||
| JP2014169668A |
Foreign References:
| WO2016002599A1 | ||||
| WO2017110169A1 |
Attorney, Agent or Firm:
Cosmos International Patent and Trademark Office