CN201050477Y - Hydraulic pump installed with unloading protecting valve - Google Patents
Hydraulic pump installed with unloading protecting valve Download PDFInfo
- Publication number
- CN201050477Y CN201050477Y CNU200720012915XU CN200720012915U CN201050477Y CN 201050477 Y CN201050477 Y CN 201050477Y CN U200720012915X U CNU200720012915X U CN U200720012915XU CN 200720012915 U CN200720012915 U CN 200720012915U CN 201050477 Y CN201050477 Y CN 201050477Y
- Authority
- CN
- China
- Prior art keywords
- pump
- hydraulic pump
- protective valve
- valve
- outloading
- 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.)
- Expired - Lifetime
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Abstract
The utility model belongs to a hydraulic system device, in particular to a hydraulic pump in which an outloading protective valve is arranged. The hydraulic pump comprises a pump cover (1), a pump body (4) and an obturating ring (3). An outloading protective valve (2) is fixed and arranged inside the pump cover (1) or the pump body (4). The inverted valve terminal of the outloading protective valve (2) is communicated with a high pressure cavity (5) of the hydraulic pump and the other terminal is communicated with a scavenge pipe and a low pressure cavity (6). When the hydraulic system pressure is beyond the allowed highest pressure, the hydraulic pump unloads by the outloading protective valve to protect the hydraulic system to run regularly. Because the outloading protective valve is arranged in the hydraulic pump, manual adjustment is not needed and incorrect manipulation is not caused, thus the whole system volume is small and the performance is reliable.
Description
Technical field
The utility model belongs to hydraulic system equipment, particularly a kind of oil hydraulic pump that is provided with the off-load Protective valve in pump.
Background technique
Existing hydraulic system overload protection by system's relief valve protection, all is to dispose the off-load Protective valve outside oil hydraulic pump mostly, and the protection of overvoltage need manually be adjusted, and makes whole hydraulic system structure numerous and diverse, and it is big to take up room.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned technical deficiency, provide a kind of simple in structure, protective value good, little a kind of oil hydraulic pump that is provided with the off-load Protective valve in pump takes up room.
The technological scheme that the utility model technical solution problem adopts is: a kind of oil hydraulic pump of being made up of pump cover, the pump housing, seal ring that is provided with the off-load Protective valve in pump; be characterized in the pump cover of oil hydraulic pump or pump housing internal fixation is adorned an off-load Protective valve; the one-way valve end of off-load Protective valve is communicated with the hyperbaric chamber of oil hydraulic pump, and the other end is communicated with back oil road and low-pressure cavity.
The beneficial effects of the utility model are: when hydraulic system pressure surpasses the permission maximum pressure; oil hydraulic pump carries out off-load by the overload protection valve; thereby the normal operation of protection hydraulic system; because the off-load Protective valve is contained in the oil hydraulic pump; do not need artificial adjustment; can not cause misoperation, make the whole system volume little, reliable performance.
Description of drawings
Specify with embodiment below in conjunction with accompanying drawing.
Fig. 1 shows a kind of oil hydraulic pump partial structurtes figure that is provided with the off-load Protective valve in pump.
Among the figure, the 1-pump cover; 2-off-load Protective valve; The 3-seal ring; The 4-pump housing; The 5-hyperbaric chamber; 6-back oil road and low-pressure cavity;
Embodiment
Embodiment; with reference to accompanying drawing; a kind of oil hydraulic pump that in pump, is provided with the off-load Protective valve; be on the front or rear pump cover 1 of gear hydraulic pump, fixedly to adorn an off-load Protective valve 2; in the oil hydraulic pump of other kind, also can be contained in the pump housing 4; off-load Protective valve 2 band one-way valve ends are communicated with the hyperbaric chamber 5 of hydraulic pump body 4; the other end is communicated with back oil road and low-pressure cavity 6; between the pump cover 1 and the pump housing 4 seal ring 3 is housed; when hydraulic system pressure surpasses the permission maximum pressure; oil in the hyperbaric chamber 5 of the pump housing 4 can enter in back oil road and the low-pressure cavity 6 by unloading pressure protection valve 2, the normal operation of protection hydraulic system.
Claims (1)
1. oil hydraulic pump that in pump, is provided with the off-load Protective valve of forming by pump cover (1), the pump housing (4), seal ring (3); it is characterized in that in the pump cover (1) at oil hydraulic pump or the pump housing (4) internal fixation is adorned an off-load Protective valve (2); the one-way valve end of off-load Protective valve (2) is communicated with the hyperbaric chamber (5) of oil hydraulic pump, and the other end is communicated with back oil road and low-pressure cavity (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720012915XU CN201050477Y (en) | 2007-06-19 | 2007-06-19 | Hydraulic pump installed with unloading protecting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720012915XU CN201050477Y (en) | 2007-06-19 | 2007-06-19 | Hydraulic pump installed with unloading protecting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201050477Y true CN201050477Y (en) | 2008-04-23 |
Family
ID=39336964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720012915XU Expired - Lifetime CN201050477Y (en) | 2007-06-19 | 2007-06-19 | Hydraulic pump installed with unloading protecting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201050477Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131164A (en) * | 2019-05-10 | 2019-08-16 | 士商（上海）机械有限公司 | A kind of pressure control device of fluid delivery pump |
| CN113217244A (en) * | 2021-06-25 | 2021-08-06 | 龙口龙泵柴油喷射高科有限公司 | Positive pressure common rail oil supply pump assembly for light diesel engine |
-
2007
- 2007-06-19 CN CNU200720012915XU patent/CN201050477Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131164A (en) * | 2019-05-10 | 2019-08-16 | 士商（上海）机械有限公司 | A kind of pressure control device of fluid delivery pump |
| CN113217244A (en) * | 2021-06-25 | 2021-08-06 | 龙口龙泵柴油喷射高科有限公司 | Positive pressure common rail oil supply pump assembly for light diesel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FUXIN BEIXING HYDRAULIC CO., LTD. Free format text: FORMER OWNER: FUXIN BEI XIN XING HYDRAULIC CO., LTD. Effective date: 20110711 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 123000 HIGH-TECH. INDUSTRIAL PARK, FUXIN CITY, LIAONING PROVINCE TO: 123000 SOUTH OF ROAD 15, WEST OF JIJIAYUAN ROAD, DEVELOPMENT ZONE, FUXIN CITY, LIAONING PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110711 Address after: 123000 West Road, 15 West Road, Fuxin Development Zone, Liaoning, China Patentee after: Fuxin Bei Xing Hydraulic Co., Ltd. Address before: 123000 hi tech Industrial Park, Fuxin, Liaoning Patentee before: Fuxin Bei Xin Xing Hydraulic Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080423 |