JPS5913769U

JPS5913769U - Pilot operated membrane plate type switching valve

Info

Publication number: JPS5913769U
Application number: JP11015382U
Authority: JP
Inventors: 岡田　尊
Original assignee: 株式会社ナブコ
Priority date: 1982-07-19
Filing date: 1982-07-19
Publication date: 1984-01-27
Also published as: JPH0117741Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は、従来の膜板式の切換弁の断面図。第２図は、
第１図の第１、第２膜板部分の部分断面図、第３図は、
本考案の一実施例に係る膜板式の切換弁の断面図、第４
図は、第１パイロット弁部分の部分拡大断面図。１・・・弁体、２ａ、２ａ′・・・第１パイロツト室（
パイロット室）、２ｂ、　２ｂ’・・・第２パイロツト
室（パイロット室）、３・、・・入力口、４ａ、　　４
ａ’・・・第１出力口（出力口）、４ｂ、　４ｂ’・・
・第２出力口（出力口）　、ＰＭ、ＰＭ’・・・圧力空
気源、ＰＬ、　ＰＬ′・・・パイロット圧力空気源、８
ａ、　　＄ａ’・・・第１膜板、３ｂ、　８ｂ’−・・
第２膜板、９ａ、　９ａ’−第３膜板、ｇｂ、　　ｇｂ
’・・・第４膜板、１５ａ・・・第１パイロツト弁、１
５ｂ・・・第２パイロツト弁、１６ａ・・・第１ピスト
ン、１６ｂ・・・第２ピストン、２１ａ・・・第１小弁
、２１ｂ・・・第２小弁。FIG. 1 is a sectional view of a conventional membrane plate type switching valve. Figure 2 shows
A partial sectional view of the first and second membrane plate portions in FIG. 1 and FIG. 3 are as follows:
Sectional view of a membrane plate type switching valve according to an embodiment of the present invention, No. 4
The figure is a partially enlarged sectional view of the first pilot valve portion. 1... Valve body, 2a, 2a'... 1st pilot chamber (
Pilot room), 2b, 2b'... 2nd pilot room (pilot room), 3... Input port, 4a, 4
a'...1st output port (output port), 4b, 4b'...
・Second output port (output port), PM, PM'...pressure air source, PL, PL'...pilot pressure air source, 8
a, $a'...first membrane plate, 3b, 8b'-...
Second membrane plate, 9a, 9a'-third membrane plate, gb, gb
'... Fourth membrane plate, 15a... First pilot valve, 1
5b...second pilot valve, 16a...first piston, 16b...second piston, 21a...first small valve, 21b...second small valve.

Claims

[Scope of utility model registration request]

The valve body is provided with a first pilot chamber and a second pilot chamber, and when pilot air pressure acts on one of the pilot chambers and the other is opened to the atmosphere, one output port is connected to a pressure air source and the other output port is connected to the pressure air source. In the switching valve equipped with a membrane plate that connects the first pilot chamber to the atmosphere, a first small valve that connects the first pilot chamber to either a pressure air source or the atmosphere, and a first small valve that is arranged in series with the first small valve. A first pilot valve having a first piston operated by pilot air pressure, a second small valve connecting the second pilot chamber to either a pressure air source or the atmosphere, and a second small valve connected to the second small valve. and a second pilot valve having a second piston operated by air pressure in the first pilot chamber.