JPH02138309U

JPH02138309U -

Info

Publication number: JPH02138309U
Application number: JP4585989U
Authority: JP
Priority date: 1989-04-19
Filing date: 1989-04-19
Publication date: 1990-11-19

Description

[Brief explanation of drawings]

第１〜４図は本考案を具体化した第１の実施例
を示すものであつて、第１図は釣合つた状態を示
す断面図、第２図は入力ポートと出力ポートとが
連通した状態を示す断面図、第３，４図は排気ポ
ートと出力ポートとが連通した状態を示す断面図
、第５図はバランサの概略図である。出力ポート……２、室……３、入力ポート……
４、排気ポート……５、第１の弁座……８、第２
の弁座……９、第１のバランス室……１０、第２
のバランス室……１１、ダイヤフラム……１２、
支持体……１３、第１のパイロツト室……１４、
第２のパイロツト室……１５、分岐流路……１６
、パイロツトポート……１８、作動ロツド……１
９、連通路……１９ａ、絞り部……１９ｂ、第１
の弁体……２０、第２の弁体……２３、ばね……
２２，２４。 1 to 4 show a first embodiment embodying the present invention, in which FIG. 1 is a sectional view showing a balanced state, and FIG. 2 is a sectional view showing a state in which an input port and an output port are in communication. 3 and 4 are sectional views showing a state in which the exhaust port and the output port communicate with each other, and FIG. 5 is a schematic diagram of the balancer. Output port...2, Chamber...3, Input port...
4, Exhaust port...5, First valve seat...8, Second
Valve seat...9, 1st balance chamber...10, 2nd
Balance chamber...11, diaphragm...12,
Support body...13, first pilot chamber...14,
Second pilot chamber...15, branch flow path...16
, Pilot port...18, Actuation rod...1
9, Communication path...19a, Throttle part...19b, 1st
Valve body...20, Second valve body...23, Spring...
22, 24.

Claims

[Scope of claim for utility model registration] Valve seats 8 are provided at both ends of the chamber 3 communicating with the output port 2.
9 and supported by a support 13 supported by a diaphragm 12, an actuating rod 19 is disposed so as to pass through the chamber 3, and a first valve body 20 is connected at one end thereof to the input port of the chamber 3. a closed position in which the valve seat faces the first valve seat 8 provided in a position communicating with the fourth side and contacts the first valve seat 8 with the other end inserted into the first balance chamber 10; The second valve body 23 is slidably inserted into the actuating rod 19 to an open position spaced apart from the valve body 8 and is biased toward the closed position by a spring 22, so that the second valve body 23 is connected to the exhaust port 5 of the chamber 3 at one end thereof. A closed position where the valve seat 9 faces the second valve seat 9 provided in a position communicating with the side and abuts the second valve seat 9 with the other end inserted into the second balance chamber 11; The actuating rod 19 is slidably inserted into the actuating rod 19 to an open position spaced apart from the opening position, and is biased toward the closed position by a spring 24, thereby communicating the chamber 3 with both balance chambers 10 and 11, and establishing a constriction section. Communication path 19 having 19b
A is formed on the actuating rod 19, and a pilot port 18 connectable to a branch flow path 16 branched from the input port 4 is provided in the first pilot chamber 14 partitioned by the diaphragm 12 and the support body 13; The first
a second pilot chamber 15 provided opposite to the pilot chamber 14; and a second balance chamber 11.
A pilot type pressure reducing valve characterized in that the valve is formed in communication with the valve.