JPH0371165U

JPH0371165U -

Info

Publication number: JPH0371165U
Application number: JP13227089U
Authority: JP
Priority date: 1989-11-14
Filing date: 1989-11-14
Publication date: 1991-07-18

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係る圧力調整弁の
断面図、第２図は第１の二層シール部の拡大断面
図、第３図は第２の二層シール部の拡大断面図、
第４図はダイアフラムと第１および第２のシール
部材の大きさを示す斜視図、第５図は従来の圧力
調整弁の断面図である。１０……弁箱、１１，１２……シエル、１３…
…流入管、１４……流出管、２１……ダイアフラ
ム、２２……第１のシール部材、２３……保持体
、２４……第１のバネ受け、２５……第２のシー
ル部材、３１……主バネ。 Fig. 1 is a sectional view of a pressure regulating valve according to an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the first two-layer seal portion, and Fig. 3 is an enlarged sectional view of the second two-layer seal portion. ,
FIG. 4 is a perspective view showing the sizes of the diaphragm and the first and second seal members, and FIG. 5 is a sectional view of a conventional pressure regulating valve. 10... Valve box, 11, 12... Ciel, 13...
... Inflow pipe, 14 ... Outflow pipe, 21 ... Diaphragm, 22 ... First seal member, 23 ... Holder, 24 ... First spring receiver, 25 ... Second seal member, 31 ... ...Main spring.

Claims

[Scope of utility model registration request]

A cup-shaped first shell including an inlet and an outlet and having an opening in one direction, and a cup-shaped second shell having an opening having approximately the same shape as the opening of the first shell. The openings are fixed to face each other, and a diaphragm having a through hole in the center is provided between the two shells to form a first chamber and a second chamber inside the first shell and the second shell, respectively; In addition, the valve member is assembled by fixing the valve body and the stop seat from the first shell side and the second shell side of the hole, respectively, with the through hole of the diaphragm in between, and the valve member is assembled in the first shell. A pedestal is provided that opens and closes the flow path between the inflow port and the outflow port by displacement of the member, and a main spring is provided in the second shell that biases the valve member in a direction in which the flow path is closed. In the pressure regulating valve, a seal member having temperature-elasticity characteristics different from that of the diaphragm is attached to the outer peripheral edge of the diaphragm and the peripheral edge of the through hole to form a two-layer seal part, and A pressure regulating valve characterized in that a fixed portion between the first shell and the second shell and a fixed portion between the valve body and the stop seat are fixed while sandwiching the two-layer seal portion under a predetermined pressure.