JPS62185989U

JPS62185989U -

Info

Publication number: JPS62185989U
Application number: JP7589486U
Authority: JP
Priority date: 1986-05-20
Filing date: 1986-05-20
Publication date: 1987-11-26
Also published as: JPH0325477Y2

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一実施例の断面図である。７：弁口、１２：摺動孔、１５：弁室、１５ａ
：弁室１５の上側の室、１６：圧力室、１８：ロ
ツド、２１：弁体、２４：ダイヤフラム、２５：
ピストン、２８：圧縮コイルばね、３０：供給口
、３１：通気孔、３２：通路、３３：溝、３５：
接続口、３６：放出管。 FIG. 1 is a sectional view of an embodiment of the present invention. 7: Valve port, 12: Sliding hole, 15: Valve chamber, 15a
: Upper chamber of valve chamber 15, 16: Pressure chamber, 18: Rod, 21: Valve body, 24: Diaphragm, 25:
Piston, 28: Compression coil spring, 30: Supply port, 31: Ventilation hole, 32: Passage, 33: Groove, 35:
Connection port, 36: discharge pipe.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

弁口に接離して開閉する弁体を収容した弁室と
ピストンを摺動自由に嵌合した圧力室とを摺動孔
の前側と後側に連設し、該摺動孔に摺動自由に嵌
合したロツドの前端に前記弁体を、後端に前記ピ
ストンを、夫々、結合し、前記弁体をばねの弾力
により閉弁方向に付勢するとともに、前記圧力室
の前記ピストンの前面側に加圧空気を供給するこ
とにより前記ピストン及びロツドとともに前記弁
体を後退させて開弁するようにしたエアー駆動式
開閉弁において、前記弁室の前側と後側を前記弁
体の周りに張設したダイヤフラム、ベローズ等の
可撓隔膜で気密に画成するとともに、前記弁室の
後側の室を前記ロツド内に形成した通気孔によつ
て前記圧力室の前記ピストンの後面側に連通し、
該圧力室の後面側に外気への放出管の接続口を設
けたことを特徴とするエアー駆動式開閉弁。 A valve chamber housing a valve body that opens and closes by approaching and separating from the valve port and a pressure chamber in which a piston is slidably fitted are connected to the front and rear sides of the sliding hole, and a valve chamber that can freely slide into the sliding hole is connected to the front and rear sides of the sliding hole. The valve body is coupled to the front end of the rod that is fitted in the rod, and the piston is coupled to the rear end of the rod, and the valve body is biased in the valve closing direction by the elasticity of the spring, and the front surface of the piston of the pressure chamber is In the air-driven on-off valve, which opens by retracting the valve body together with the piston and rod by supplying pressurized air to the sides, the front and rear sides of the valve chamber are placed around the valve body. The pressure chamber is airtightly defined by a flexible diaphragm such as a stretched diaphragm or bellows, and the chamber on the rear side of the valve chamber is communicated with the rear side of the piston of the pressure chamber through a vent hole formed in the rod. death,
An air-driven on-off valve characterized in that a connection port for a discharge pipe to outside air is provided on the rear side of the pressure chamber.