CN201874811U - Gear pump with built-in check valve - Google Patents
Gear pump with built-in check valve Download PDFInfo
- Publication number
- CN201874811U CN201874811U CN2010205915061U CN201020591506U CN201874811U CN 201874811 U CN201874811 U CN 201874811U CN 2010205915061 U CN2010205915061 U CN 2010205915061U CN 201020591506 U CN201020591506 U CN 201020591506U CN 201874811 U CN201874811 U CN 201874811U
- Authority
- CN
- China
- Prior art keywords
- pump cover
- built
- left end
- gear pump
- check valve
- 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 - Fee Related
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Abstract
The utility model relates to hydraulic elements, in particular to a gear pump with a built-in check valve, which comprises a driving shaft (1), a front pump cover (2), a pump body (3), a rear pump cover (4) and an oil inlet (4-1), wherein a connecting head (8) is connected with the inner threads in the hole above the right end surface of the rear pump cover (4) of the gear pump with the built-in check valve, a combined pad (7) is arranged between the left end surface of the connecting head (8) and the right end surface of the rear pump cover (4), an oil outlet (8-1) is arranged in the center of the connecting head (8), one end of a spring (6) is pressed at the left end of the oil outlet (8-1), the left end of the spring (6) is pressed at the spherical surface of a steel ball (5), and the left end spherical surface of the steel ball (5) is arranged on the periphery of the inner hole of the rear pump cover (4). The gear pump with the built-in check valve integrates the functions of oil conveying and checking, has simple structure and few leakage nodes, occupies small space, and is low in manufacture cost.
Description
Technical field
The utility model belongs to hydraulic element, particularly a kind of built-in one-way valve gear pump.
Background technique
At present, in the hydraulic control system of domestic use, by gear pump, external one-way valve and various pipeline parts the oil hydraulic circuit of forming is installed separately mostly, this structure exist manufacture cost height, complex structure, space hold big, leak shortcomings such as node is many.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned technical deficiency, provide a kind of simple in structure, collect oil transportation and check function in the built-in one-way valve gear pump of integrated system pressure protect type.
The technological scheme that the utility model technical solution problem adopts is: built-in one-way valve gear pump comprises driving shaft, front pump cover, the pump housing, rear pump cover, filler opening; Be characterized in that the hole internal thread connects a pipe joint in the rear pump cover right side top of built-in one-way valve gear pump, be provided with the combination mat sealing between pipe joint left side and the rear pump cover right side, the pipe joint center is provided with oil outlet, the left end of oil outlet is pressed with an end of spring, the left end of spring is pressed on the sphere of steel ball, and the left end sphere of steel ball places on the endoporus outer rim of rear pump cover.
The beneficial effects of the utility model are: built-in one-way valve gear pump integrates oil transportation and check function, and is simple in structure, space hold is little, and it is few to leak node, low cost of manufacture.
Description of drawings
Specify with embodiment below in conjunction with accompanying drawing.
Fig. 1 is that figure cuts open in built-in one-way valve gear pump structure office.
Among the figure, the 1-driving shaft; The 2-front pump cover; The 3-pump housing; The 4-rear pump cover; The 4-1-filler opening; The 5-steel ball; The 6-spring; The 7-combination mat; The 8-pipe joint; The 8-1-oil outlet;
Embodiment
Embodiment, with reference to accompanying drawing 1, the built-in one-way valve gear pump pump housing 3 left ends connect a front pump cover 2 with bolt, and the driving shaft 1 of the pump housing 3 passes 2 li holes of front pump cover, and the pump housing 3 right-hand members connect a rear pump cover 4 with bolt.The hole internal thread connects a pipe joint 8 in the top, rear pump cover 4 right sides, be provided with combination mat 7 sealings between pipe joint 8 left sides and the rear pump cover right side, pipe joint 8 centers are provided with oil outlet 8-1, the oil outlet left end is pressed with an end of spring 6, the left end of spring 6 is pressed on the sphere of steel ball 5, the left end sphere of steel ball 5 places on 4 li hole outer rims of rear pump cover, and rear pump cover 4 is provided with a filler opening 4-1, among the figure arrow direction be filler opening 4-1 and oil outlet 8-1 into and out of oily direction.
The working procedure of built-in one-way valve gear pump is: pressure oil overcomes spring 6 resistances and makes outside the steel ball 5 and move when gear pump starts; pressure oil enters in the hydraulic system and starts working; when power source stops; under the pressure and the acting in conjunction of pressure oil backflow power of spring 6; move in the steel ball 54 li holes of rear pump cover outer rim hydraulic fluid port is sealed; fluid can't reflux and keep system pressure, has protected the safety of executive component simultaneously.
Claims (1)
1. a built-in one-way valve gear pump comprises driving shaft (1), front pump cover (2), the pump housing (3), rear pump cover (4), filler opening (4-1); It is characterized in that the hole internal thread connects a pipe joint (8) in rear pump cover (4) the right side top of built-in one-way valve gear pump, be provided with combination mat (7) sealing between pipe joint (8) left side and rear pump cover (4) right side, pipe joint (8) center is provided with oil outlet (8-1), the left end of oil outlet (8-1) is pressed with an end of spring (6), the left end of spring (6) is pressed on the sphere of steel ball (5), and the left end sphere of steel ball (5) places on the endoporus outer rim of rear pump cover (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205915061U CN201874811U (en) | 2010-10-27 | 2010-10-27 | Gear pump with built-in check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205915061U CN201874811U (en) | 2010-10-27 | 2010-10-27 | Gear pump with built-in check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201874811U true CN201874811U (en) | 2011-06-22 |
Family
ID=44162729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205915061U Expired - Fee Related CN201874811U (en) | 2010-10-27 | 2010-10-27 | Gear pump with built-in check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201874811U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705230A (en) * | 2012-05-09 | 2012-10-03 | 苏州百胜动力机器有限公司 | Gear pump |
| CN105370564A (en) * | 2015-11-24 | 2016-03-02 | 徐州科源液压股份有限公司 | Gear pump front cover with overflow protecting function |
| CN108612651A (en) * | 2018-07-13 | 2018-10-02 | 杜马司科学仪器（江苏）有限公司 | A kind of vacuum liquid discharging pump and vacuum distillation apparatus |
-
2010
- 2010-10-27 CN CN2010205915061U patent/CN201874811U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705230A (en) * | 2012-05-09 | 2012-10-03 | 苏州百胜动力机器有限公司 | Gear pump |
| CN102705230B (en) * | 2012-05-09 | 2015-09-02 | 苏州百胜动力机器股份有限公司 | A kind of gear pump |
| CN105370564A (en) * | 2015-11-24 | 2016-03-02 | 徐州科源液压股份有限公司 | Gear pump front cover with overflow protecting function |
| CN108612651A (en) * | 2018-07-13 | 2018-10-02 | 杜马司科学仪器（江苏）有限公司 | A kind of vacuum liquid discharging pump and vacuum distillation apparatus |
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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: 20120626 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120626 Address after: 123000 West Road, 15 West Road, Fuxin Development Zone, Liaoning, China Patentee after: Fuxin Bei Xing Hydraulic Co., Ltd. Address before: 123000 No. 1, industrial park, hi tech Industrial Park, Liaoning, Fuxin Patentee before: Fuxin Bei Xin Xing Hydraulic Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20111027 |