JPH0235207U

JPH0235207U -

Info

Publication number: JPH0235207U
Application number: JP11294288U
Authority: JP
Priority date: 1988-08-29
Filing date: 1988-08-29
Publication date: 1990-03-07

Description

[Brief explanation of drawings]

第１図は本考案の圧力調整弁の一実施例による
縦断面図、第２図は圧力設定ばねの傾斜した座面
の例を示す縦断面図、第３図乃至第６図は本考案
の圧力調整弁のオフセツト特性、ヒステリシス特
性、締切り昇圧特性及び作動特性を示すグラフ、
第７図は他の型式の圧力調整弁に適用した例の弁
の縦断面図、第８図及び第９図は従来の圧力調整
弁の縦断面図である。１……弁箱、２……弁座、３……ライナ、４…
…弁棒、５……弁体、６……ダイアフラム押え、
８……ダイアフラム、１０……調節ねじ、１２…
…圧力設定ばね、１６……ダイアフラム受け部、
１７……ばね・ダイアフラム受、１８……ダイア
フラム受け座。 Fig. 1 is a longitudinal cross-sectional view of an embodiment of the pressure regulating valve of the present invention, Fig. 2 is a longitudinal cross-sectional view showing an example of the inclined seating surface of the pressure setting spring, and Figs. Graphs showing offset characteristics, hysteresis characteristics, cut-off pressure increase characteristics, and operating characteristics of pressure regulating valves,
FIG. 7 is a longitudinal sectional view of an example of a pressure regulating valve applied to another type of pressure regulating valve, and FIGS. 8 and 9 are longitudinal sectional views of a conventional pressure regulating valve. 1...Valve box, 2...Valve seat, 3...Liner, 4...
... Valve stem, 5... Valve body, 6... Diaphragm holder,
8...Diaphragm, 10...Adjustment screw, 12...
...Pressure setting spring, 16...Diaphragm receiving part,
17...Spring/diaphragm receiver, 18...Diaphragm receiver.

Claims

[Scope of utility model registration request]

A pressure regulating valve in which the opening and closing of a valve seat opening communicating between a primary pressure chamber and a secondary pressure chamber is controlled by a valve body interlocked with a valve stem via a diaphragm that is displaced in response to pressure fluctuations in the pressure chamber, One end of the pressure setting spring seats the diaphragm receiving part that holds the diaphragm with the diaphragm holder.
It is composed of a diaphragm receiver and a diaphragm receiver interposed between the diaphragm and the diaphragm retainer, and the inner peripheral surface of the spring/diaphragm receiver is inclined with respect to the axis of the valve stem. A pressure regulating valve characterized in that a contact portion with a diaphragm receiver is formed into a convex spherical surface so that the spring/diaphragm receiver is supported so as to be tiltable with respect to the valve stem.