Title:
ACTUATOR FOR VALVE AND DIAPHRAGM VALVE INCLUDING THE SAME
Document Type and Number:
Japanese Patent JP2018123872
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an actuator for valve easily enabling downsizing thanks to a simple structure, including reliable valve opening/closing performance even in high pressure, and capable of exhibiting high durability even in a case a valve opening/closing frequency is high, and also provide a diaphragm valve including the actuator.SOLUTION: A resilient member 8 provided in an actuator body 100, a piston energized by the resilient member, and at least two air chambers 3a, 3b for operating the piston with pneumatic pressure are arranged, and a booster mechanism 1 for exhibiting force amplified in a valve closing direction is stored in any of the air chambers.SELECTED DRAWING: Figure 1
Inventors:
KO CHOKUTO
Application Number:
JP2017015741A
Publication Date:
August 09, 2018
Filing Date:
January 31, 2017
Export Citation:
Assignee:
KITZ SCT KK
International Classes:
F15B15/14; F15B15/02; F16K7/16
Domestic Patent References:
JP2004183786A | 2004-07-02 | |||
JPH04248084A | 1992-09-03 | |||
JP2011163372A | 2011-08-25 | |||
JPH03110278U | 1991-11-12 | |||
JPH0647779U | 1994-06-28 | |||
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JP2012211682A | 2012-11-01 | |||
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Foreign References:
US5215286A | 1993-06-01 | |||
US5253671A | 1993-10-19 | |||
US4684103A | 1987-08-04 |
Attorney, Agent or Firm:
Tetsuo Kobayashi