VALVE ENERGIZATION STRUCTURE OF FLUID CONTROL VALVE

Japanese Patent JP2016156397

A

PROBLEM TO BE SOLVED: To provide a valve energization structure for a fluid control valve capable of keeping a high cleanliness of controlled fluid by suppressing mixing of particles into the controlled fluid in accompany with wearing of a material structure of a seating portion by solving deviation of a vertical shaft in a forward and backward motion of a valve portion seated on a valve seat portion.SOLUTION: A valve energization structure includes: a valve mechanism portion 30 including a controlled fluid inflow portion 21, a controlled fluid outflow portion 22, a valve chest body portion 11 having a valve chest 20 provided with a valve seat portion 23 between the inflow portion and the outflow portion, a valve portion 31 having a seal portion 33 for sealing the valve seat portion movably forward and backward, and a diaphragm portion 40 formed at a side opposite to a seal portion side and mounted in the valve chest; an advancing/retracting portion 90 controlling opening/closing of the valve seat portion by advancing and retracting the valve mechanism portion; and a coiled wave spring as an energization spring 50 for constantly energizing the valve mechanism portion to the valve seat portion side.SELECTED DRAWING: Figure 1

ISHIKAWA HIROYUKI
ISHIGAKI YU

JP2015032879A

September 01, 2016

February 23, 2015

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ADVANCE DENKI KOGYO KK

F16K1/32; F16K1/34; F16K7/17

JP3590572B2	2004-11-17
JP2012107695A	2012-06-07
JP2012026476A	2012-02-09
JPH0849513A	1996-02-20

US20060124758A1	2006-06-15
WO2014052523A1	2014-04-03
US6871802B2	2005-03-29

Noriaki Goto

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