JPS61122462U

JPS61122462U -

Info

Publication number: JPS61122462U
Application number: JP518985U
Authority: JP
Priority date: 1985-01-17
Filing date: 1985-01-17
Publication date: 1986-08-01

Description

[Brief explanation of the drawing]

第１図は、本考案に係るゲート弁の弁座部分を
示す部分断面図、第２図は、第１図の―線断
面図、第３図は、本考案に係るゲート弁の他の実
施例の弁座部分を示す部分断面図、第４図は、第
３図の―線断面図、第５図は、従来のゲート
弁を示す縦断面図、第６図は、第５図の部分拡大
図である。１……弁箱、２……弁室、５……入口流路、６
……出口流路、８，９……拡大径部、１３ａ，１
３ｂ……弁座、１４……シールリング、１５……
外周溝、１６ａ……圧力媒体注入口、１７……弁
体、１８……貫通孔、２６，２６ａ……シリンダ
、２７，２７ａ，２７ｂ……Ｏリング、２８，２
８ａ……ピストン、２９……シリンダ室、３０…
…接手。 Fig. 1 is a partial sectional view showing the valve seat portion of the gate valve according to the present invention, Fig. 2 is a sectional view taken along the line - - in Fig. 1, and Fig. 3 is another embodiment of the gate valve according to the present invention. FIG. 4 is a partial cross-sectional view showing the valve seat portion of the example, FIG. 4 is a cross-sectional view taken along the line -- in FIG. 3, FIG. It is an enlarged view. 1... Valve box, 2... Valve chamber, 5... Inlet channel, 6
...Exit flow path, 8, 9...Enlarged diameter portion, 13a, 1
3b... Valve seat, 14... Seal ring, 15...
Outer circumferential groove, 16a...Pressure medium inlet, 17...Valve body, 18...Through hole, 26, 26a...Cylinder, 27, 27a, 27b...O ring, 28, 2
8a... Piston, 29... Cylinder chamber, 30...
...joint.

Claims

[Scope of utility model registration request]

A valve box having an inlet flow path and an outlet flow path communicating with the valve chamber, a ring-shaped valve seat that fits into an enlarged diameter portion formed on the valve chamber side of the inlet flow path and the outlet flow path, and a through hole. and a valve body that is sandwiched between the valve seats and slidably contacts the valve body to open and close the valve; 1. A gate valve, characterized in that a piston is fitted into each cylinder to form a cylinder chamber, and a means for sealing with an injection port for injecting a pressure medium into the cylinder chamber is provided.