JPH02105669U

JPH02105669U -

Info

Publication number: JPH02105669U
Application number: JP1428589U
Authority: JP
Priority date: 1989-02-08
Filing date: 1989-02-08
Publication date: 1990-08-22
Anticipated expiration: 2004-02-08
Also published as: JPH0721974Y2

Description

[Brief explanation of drawings]

第１図は本考案のバイパス機能付チエツク・リ
リーフ弁の一例を示す断面図、第２図は第１図の
各部分の詳細図、第３図はチエツク・リリーフ弁
を用いた流体トランスミツシヨン装置を示す回路
図、第４図は従来のチエツク・リリーフ弁を示す
断面図である。１……本体、２……弁室、２ａ……第１弁座、
２ｂ……めねじ、３……低圧ポート、４……高圧
ポート、５……プラグ、７……第１弁体、７ａ…
…貫通穴、７ｂ……第２弁座、８……第２弁体、
８ａ……ポペツト部、８ｂ……ステム部、８ｃ…
…他端、９……ばね受け、１０……第２ばね、１
１……第１ばね、１２……保持リング、１５……
小径部、１５ａ……凹部、１５ｃ……おねじ、１
６……大径部、１９……低圧用パツキンリング、
２０……高圧用パツキンリング。 Figure 1 is a sectional view showing an example of the check-relief valve with bypass function of the present invention, Figure 2 is a detailed view of each part of Figure 1, and Figure 3 is a fluid transmission using the check-relief valve. A circuit diagram showing the device, and FIG. 4 is a sectional view showing a conventional check relief valve. 1... Main body, 2... Valve chamber, 2a... First valve seat,
2b... Female thread, 3... Low pressure port, 4... High pressure port, 5... Plug, 7... First valve body, 7a...
...Through hole, 7b...Second valve seat, 8...Second valve body,
8a...Poppet part, 8b...Stem part, 8c...
...Other end, 9...Spring receiver, 10...Second spring, 1
1...First spring, 12...Retaining ring, 15...
Small diameter part, 15a...Concave part, 15c...Male thread, 1
6...Large diameter part, 19...Low pressure packing ring,
20...Packing ring for high pressure.

Claims

[Claims for Utility Model Registration] A main body 1 having a low-pressure port 3 and a high-pressure port 4 and a valve chamber 2 inside, and a recess 15a on the end surface facing the valve chamber 2, which is screwed into the main body 1. a plug 5 having a sealing outer circumferential surface facing the sealing inner circumferential surface 21 of the main body 1;
a sealing ring 19 fitted between the sealing outer peripheral surface of the plug 5 and the sealing inner peripheral surface 21 of the main body 1; and a first valve seat 2a provided on the end wall of the valve chamber 2. A first valve body 7 is slidably fitted into the valve chamber 2 so as to be moved into and out of the valve chamber 2, and has an axial through hole 7a in the center.
The stem portion 8b is slidably inserted into the through hole 7a of the first valve body 7, and the poppet portion 8a at one end is provided at the edge of the through hole 7a of the first valve body 7. The valve chamber 2 and the low pressure port 3 are connected to and separated from the seat 7b.
a second valve body 8 that opens and closes between the second valve body 8; a spring receiver 9 fixed to the other end 8c of the second valve body 8 and slidably housed in the recess 15a of the plug 5; A second spring 10 having a large spring force is compressed between the bottom surface of the recess 15a and the spring receiver 9, and the second spring 10 is compressed between the bottom surface of the recess 15a and the spring receiver 9. a first spring 11 having a small spring force that urges the first valve body 7 toward the first valve seat 2a; A check/relief valve with a bypass function equipped with a retaining ring 12 fitted on the inner periphery.