JPS60133277U

JPS60133277U - Automatic directional valve with pressure comparison

Info

Publication number: JPS60133277U
Application number: JP2184884U
Authority: JP
Inventors: 村尾　良男; 邦彦高崎
Original assignee: 太陽鉄工株式会社
Priority date: 1984-02-17
Filing date: 1984-02-17
Publication date: 1985-09-05

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 the drawing]

第１図は本考案実施例り換え弁の使用例を示す配管図、
第２図は本考案実施例に係る方向切り換え弁を示す縦断
側面一である。１．２・・・圧力源（加熱、冷却可能な水素ガス発生吸
収装置）、３・・・両方向パイロット操作の４ポ　　　
〜−ト２位置方向切り換え弁、４・・・第１ポート、５
−・・第２ポート、６・・・第３ポート、７・・・高圧
流体供給流路、８・・・第４ポート、９・・・低圧流体
回収流路、１０９．１１・・・逆止弁、１２・・・正方
向切り換え用パイロット、１３・・・逆方向切り換え用
パイロット、１４．１５・・・パイロット流路、１６・
・・エアモーター、１７・・・弁面、１８・・・弁面本
体、１９・・・パ”イロットシリンダ、２０．２１・・
・エンドカバー、２２・・・マニホールド、２．３・・
・パイロットベース、２４・・・スプール、２５・・・
筒状スペーサー、２７・・・パイロットピストン、２８
ａｔ　　２８ｂｔ　　２９・・・パイロットシリンダ室
、３０・・・スプール内部流路、３１．３２・・・スプ
ール周溝、３３，３４・・・ストッパー。Fig. 1 is a piping diagram showing an example of the use of the switching valve according to the present invention;
FIG. 2 is a longitudinal cross-sectional side view of a directional control valve according to an embodiment of the present invention. 1.2...Pressure source (hydrogen gas generation and absorption device capable of heating and cooling), 3...4-point bidirectional pilot operation
~-to 2 position directional switching valve, 4...first port, 5
-...Second port, 6...Third port, 7...High pressure fluid supply channel, 8...Fourth port, 9...Low pressure fluid recovery channel, 109.11...Reverse Stop valve, 12... Pilot for forward direction switching, 13... Pilot for reverse direction switching, 14.15... Pilot flow path, 16.
... Air motor, 17... Valve surface, 18... Valve surface body, 19... Pilot cylinder, 20.21...
・End cover, 22...Manifold, 2.3...
・Pilot base, 24...Spool, 25...
Cylindrical spacer, 27...Pilot piston, 28
at 28bt 29...Pilot cylinder chamber, 30...Spool internal flow path, 31.32...Spool circumferential groove, 33, 34...Stopper.

Claims

[Scope of utility model registration request]

In a spool-type directional switching valve with 4 points and 2 positions, a pilot cylinder chamber that presses and moves the spool in the forward direction and a pilot cylinder chamber that presses and moves the spool in the opposite direction,
By forming the spool in the valve surface adjacent to both ends of the spool, the spool is sealed within the valve surface, and both pilot cylinder chambers and the two ports are connected to each other.
Each of the two ports is communicated with each other through a pilot flow path formed in the valve surface, and the spool is moved between the two ports and the remaining two ports in the positive direction by the differential pressure of the fluid supplied to the two ports. An automatic directional change-over valve based on pressure comparison, which is configured to automatically switch between a connected state and a reverse connected state.