JPH0182973U

JPH0182973U -

Info

Publication number: JPH0182973U
Application number: JP1987180021U
Authority: JP
Priority date: 1987-11-26
Filing date: 1987-11-26
Publication date: 1989-06-02
Also published as: JPH0428290Y2

Description

[Brief explanation of drawings]

第１図〜第３図はこの考案の実施例を示すもの
で、第１図はこの考案に係る圧力調整弁の全体構
成を示す縦断面図、第２図は同じく圧力調整弁の
要部拡大縦断面図、第３図はこの実施例の作動を
示す同じく圧力調整弁の要部拡大縦断面図である
。また、第４図は従来の圧力調整弁の全体構成を
示す縦断面図である。１……圧力調整弁、５……供給室、７……出力
室、８……供給孔、９……供給弁座、１０……供
給弁、１１……背後室、１２……供給弁ばね、１
８……逆止弁、２２……逆流通路、２５……排気
室、２６……ピストン、２８……排気弁座、２９
……給排弁棒、３０……排気孔、３２……調圧ば
ね。 Figures 1 to 3 show examples of this invention. Figure 1 is a vertical sectional view showing the overall structure of the pressure regulating valve according to this invention, and Figure 2 is an enlarged view of the main parts of the pressure regulating valve. FIG. 3 is an enlarged longitudinal sectional view of the main part of the pressure regulating valve, showing the operation of this embodiment. Moreover, FIG. 4 is a longitudinal sectional view showing the overall structure of a conventional pressure regulating valve. DESCRIPTION OF SYMBOLS 1... Pressure adjustment valve, 5... Supply chamber, 7... Output chamber, 8... Supply hole, 9... Supply valve seat, 10... Supply valve, 11... Back chamber, 12... Supply valve spring ,1
8... Check valve, 22... Backflow passage, 25... Exhaust chamber, 26... Piston, 28... Exhaust valve seat, 29
...Supply/discharge valve rod, 30...Exhaust hole, 32...Pressure adjustment spring.

Claims

[Claims for Utility Model Registration] A supply chamber connected to a pressurized air source, an output chamber communicating with the supply chamber via a supply hole, and a supply valve protruding from the opening edge of the supply hole on the supply chamber side. a supply valve provided with its front surface facing the supply valve seat; a rear portion of the supply valve is slidably fitted in an airtight manner and communicates with the output chamber; and an effective opening area of the supply valve seat. a rear chamber having substantially the same effective cross-sectional area; a supply valve spring provided in the rear chamber for biasing the supply valve toward the supply valve seat; a piston that receives on its other side the biasing force of a pressure regulating spring that resists air pressure; an exhaust chamber in which the pressure regulating spring is provided and which is open to the atmosphere; a supply/discharge valve rod that is loosely fitted and faces the front surface of the supply valve; and an exhaust hole formed in the supply/discharge valve rod, one of which opens inside the exhaust valve seat and the other opens into the exhaust chamber. , the supply valve is provided with a backflow passage that communicates the back chamber and the supply chamber, and the backflow passage is provided with a check valve whose forward direction is from the back chamber to the supply chamber. A pressure regulating valve characterized by being provided with.