CONTROL VALVE, VALVE ELEMENT, AND VALVE SHAFT

Japanese Patent JP2018031451

A

PROBLEM TO BE SOLVED: To provide a control valve easy in replacement of components while keeping fastening force by a screw between a valve shaft and a valve element.SOLUTION: A control valve has a valve element 11 having a cylindrical portion 111, a valve shaft 12 inserted to the cylindrical portion and connected to the valve element, and a locking tool. The valve element includes a female screw 112 composed of screw thread formed on an inner wall of the cylindrical portion, and a plurality of first holes 114 penetrating through an inner wall and an outer wall of a region 113 free from the screw thread of the female screw of the cylindrical portion. The valve shaft includes a male screw 120 composed of screw thread formed on a surface at the other end side of the valve shaft, and at least one second hole 122 formed on a region 121 free from the screw thread of the male screw on a surface at the other end side of the valve shaft. The valve element and the valve shaft are connected by fastening the female screw and the male screw, and the locking tool is inserted to the second hole 122 of the valve shaft through any one of the first holes 114 of the valve element.SELECTED DRAWING: Figure 2

KUBOTA KO

JP2016165554A

March 01, 2018

August 26, 2016

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AZBIL CORP

F16K1/32; F16K1/00; F16K1/48

JPS5665218U	1981-06-01
JP2005106263A	2005-04-21
JP2006250230A	2006-09-21

US20160223088A1	2016-08-04
CN105041827A	2015-11-11
CN105889267A	2016-08-24
KR20070045714A	2007-05-02
WO2012131751A1	2012-10-04

Shigeki Yamakawa
Masaki Yamakawa

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