JPS6448405U - - Google Patents
Info
- Publication number
- JPS6448405U JPS6448405U JP14412387U JP14412387U JPS6448405U JP S6448405 U JPS6448405 U JP S6448405U JP 14412387 U JP14412387 U JP 14412387U JP 14412387 U JP14412387 U JP 14412387U JP S6448405 U JPS6448405 U JP S6448405U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- flow path
- valve seat
- poppet
- working chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000007788 liquid Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
Landscapes
- Fluid-Pressure Circuits (AREA)
Description
第１図は、本考案による流体制御装置の一実施
例を示す全体構成図、第２図は第１図に示した装
置における第１ポペツト主弁部分の詳細な拡大断
面図、第３図は本考案による液体制御装置の他の
実施例を示す要部拡大図、第４図は従来例を示す
全体構成図である。
Ｐ……供給流路、Ｂ……負荷流路、６……ポペ
ツト主弁、６ａ……弁座、６ｂ……弁部、６ｃ…
…第１作用室、６ｄ……第２作用室、６ｅ……ば
ね、６ｆ……排出路、１０……第１パイロツト弁
、１４……第２パイロツト弁、１４ｄ，１７……
弁機構。
FIG. 1 is an overall configuration diagram showing an embodiment of a fluid control device according to the present invention, FIG. 2 is a detailed enlarged sectional view of the first poppet main valve portion of the device shown in FIG. 1, and FIG. FIG. 4 is an enlarged view of main parts showing another embodiment of the liquid control device according to the present invention, and FIG. 4 is an overall configuration diagram showing a conventional example. P... Supply channel, B... Load channel, 6... Poppet main valve, 6a... Valve seat, 6b... Valve section, 6c...
...First action chamber, 6d...Second action chamber, 6e...Spring, 6f...Discharge path, 10...First pilot valve, 14...Second pilot valve, 14d, 17...
Valve mechanism.
Claims (1)
接続する負荷流路の間に介在した弁座と、弁座を
閉じるよう着座する弁部を有し、移動により弁座
を開閉するポペツト主弁と、弁座を閉じる方向へ
ポペツト主弁を押圧するばねと、内部の液圧によ
つてポペツト主弁に弁座を開く方向へ押圧力を作
用する第１作用室と、第１作用室にポペツト主弁
を開作動させる圧力流体を導く第１パイロツト弁
と、絞りを介して負荷流路に接続し、内部の液圧
によつてポペツト主弁に弁座を閉じる方向へ押圧
力を作用する第２作用室と、第２作用室を低圧側
に接続する排出路を設け、ポペツト主弁が開作動
するとき第２作用室の液体が排出できるよう開く
第２パイロツト弁と、排出路に設け負荷流路が供
給流路より高圧になるとき第２作用室からの排出
を阻止するよう閉作動する弁機構とを有したこと
を特徴とする液体制御装置。 A valve seat interposed between a supply flow path connected to a hydraulic pressure source and a load flow path connected to an actuator, and a poppet main valve that has a valve portion seated to close the valve seat and opens and closes the valve seat by movement. , a spring that presses the poppet main valve in the direction of closing the valve seat, a first action chamber that applies a pressing force to the poppet main valve in the direction of opening the valve seat by internal hydraulic pressure, and a poppet in the first action chamber. The first pilot valve is connected to the load flow path through the throttle and applies a pressing force to the poppet main valve in the direction of closing the valve seat using internal hydraulic pressure. A second working chamber and a discharge passage connecting the second working chamber to the low pressure side are provided, and a second pilot valve is provided in the discharge passage to open so that the liquid in the second working chamber can be discharged when the poppet main valve is opened. A liquid control device comprising: a valve mechanism that closes to prevent discharge from the second working chamber when the pressure in the flow path becomes higher than that in the supply flow path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14412387U JPH0640322Y2 (en) | 1987-09-21 | 1987-09-21 | Liquid control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14412387U JPH0640322Y2 (en) | 1987-09-21 | 1987-09-21 | Liquid control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6448405U true JPS6448405U (en) | 1989-03-24 |
| JPH0640322Y2 JPH0640322Y2 (en) | 1994-10-19 |
Family
ID=31411549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14412387U Expired - Lifetime JPH0640322Y2 (en) | 1987-09-21 | 1987-09-21 | Liquid control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0640322Y2 (en) |
-
1987
- 1987-09-21 JP JP14412387U patent/JPH0640322Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0640322Y2 (en) | 1994-10-19 |