JPS5666572A - Automatic unloader valve with built-in pressure control mechanism - Google Patents
Automatic unloader valve with built-in pressure control mechanismInfo
- Publication number
- JPS5666572A JPS5666572A JP14204279A JP14204279A JPS5666572A JP S5666572 A JPS5666572 A JP S5666572A JP 14204279 A JP14204279 A JP 14204279A JP 14204279 A JP14204279 A JP 14204279A JP S5666572 A JPS5666572 A JP S5666572A
- Authority
- JP
- Japan
- Prior art keywords
- high pressure
- valve
- water
- low
- pressure
- 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
- Safety Valves (AREA)
Abstract
PURPOSE: To provide automatic reversing between low and high pressure circuits in an automatic unloader, by building an automatic shut-off valve together with an automatic vent valve in the valve system.
CONSTITUTION: Water fed in a high pressure inlet 11 from a high pressure pump flows in a vessel through a hollow 12 around a high pressure valve 9 and an outlet 13, while water introduced in a low pessure inlet 15 from a low pressure pump flows to the bottom of the high pressure vave 9 through a through hole 14 on a spacer 3, hollow 24 and passage 25. As the high pressure valve 9 is lifted by low pressure water, low pressure water flows in the hollow 12 to join water through the high pressure inlet 11. When both inlets 11, 15 and the outlet 13 are communicated with each other, a pressure rise in the vessel lifts a valve rod 6 to open a low pressure valve 7. Then the high pressure valve 9 is momentarily pressed to a high pressure valve seat 2 to shut the high pessure circuit off the low pressure circuit. Water flowing through the inlet 15 after a pressure rise in the hollow 12 easily flows out of a discharge port 16.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14204279A JPS5666572A (en) | 1979-11-05 | 1979-11-05 | Automatic unloader valve with built-in pressure control mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14204279A JPS5666572A (en) | 1979-11-05 | 1979-11-05 | Automatic unloader valve with built-in pressure control mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5666572A true JPS5666572A (en) | 1981-06-05 |
Family
ID=15306026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14204279A Pending JPS5666572A (en) | 1979-11-05 | 1979-11-05 | Automatic unloader valve with built-in pressure control mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5666572A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773388A (en) * | 2012-07-12 | 2012-11-14 | 王佐栋 | Pressure-maintaining hydraulic controlled overflow valve |
| CN103574126A (en) * | 2012-07-20 | 2014-02-12 | 赵焕仁 | Intelligent constant-current automatic control device |
| CN106246097A (en) * | 2016-11-01 | 2016-12-21 | 山东中瑞工程机械有限公司 | The top connection device of down-the-hole air hammer |
| CN106246098A (en) * | 2016-11-01 | 2016-12-21 | 山东中瑞工程机械有限公司 | There is the inner casing formula down-the-hole air hammer being automatically adjusted capacity function |
-
1979
- 1979-11-05 JP JP14204279A patent/JPS5666572A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773388A (en) * | 2012-07-12 | 2012-11-14 | 王佐栋 | Pressure-maintaining hydraulic controlled overflow valve |
| CN103574126A (en) * | 2012-07-20 | 2014-02-12 | 赵焕仁 | Intelligent constant-current automatic control device |
| CN106246097A (en) * | 2016-11-01 | 2016-12-21 | 山东中瑞工程机械有限公司 | The top connection device of down-the-hole air hammer |
| CN106246098A (en) * | 2016-11-01 | 2016-12-21 | 山东中瑞工程机械有限公司 | There is the inner casing formula down-the-hole air hammer being automatically adjusted capacity function |
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