JPS57116985A - Control valve device of discharge pressure - Google Patents
Control valve device of discharge pressureInfo
- Publication number
- JPS57116985A JPS57116985A JP206481A JP206481A JPS57116985A JP S57116985 A JPS57116985 A JP S57116985A JP 206481 A JP206481 A JP 206481A JP 206481 A JP206481 A JP 206481A JP S57116985 A JPS57116985 A JP S57116985A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- spool
- circuit
- spring
- neutral position
- 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.)
- Pending
Links
Landscapes
- Fluid-Driven Valves (AREA)
Abstract
PURPOSE: To discharge the pressure without a shock from a vent circuit and other high pressure circuit, by applying pressure of a flow outlet to one end of a spool through a throttle valve simultaneously providing a spring, moving the spool to a selective position, to the other end.
CONSTITUTION: In case of maintaining pressure of a pressure circuit 4, an open- close valve 7 is placed to a neutral position 7a, at this time a flow outelt 3 is also at pressure equal to high pressure in a flow inlet 2 and vent circuit 6, then a spool 9 presses a spring 13 and is placed at a neutral position 9a. In case of discharging the pressure in the pressure circuit 4, the open-close valve 7 is selected to a selective position 7b to connect the flow outlet 3 to a tank 8, however, pressure in one end chamber of the spool 9 is discharged to the tank 8 in a slightly slow state by the action of a throttle valve 10, thus the spool 9 is pressed by the spring 13 and moved at relatively slow speed from the neutral position 9a to a selective position 9b.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP206481A JPS57116985A (en) | 1981-01-12 | 1981-01-12 | Control valve device of discharge pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP206481A JPS57116985A (en) | 1981-01-12 | 1981-01-12 | Control valve device of discharge pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57116985A true JPS57116985A (en) | 1982-07-21 |
Family
ID=11518907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP206481A Pending JPS57116985A (en) | 1981-01-12 | 1981-01-12 | Control valve device of discharge pressure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57116985A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6273102U (en) * | 1985-10-25 | 1987-05-11 |
-
1981
- 1981-01-12 JP JP206481A patent/JPS57116985A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6273102U (en) * | 1985-10-25 | 1987-05-11 | ||
| JPH0412241Y2 (en) * | 1985-10-25 | 1992-03-25 |
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