CN203584802U - Gear pump - Google Patents
Gear pump Download PDFInfo
- Publication number
- CN203584802U CN203584802U CN201320698927.8U CN201320698927U CN203584802U CN 203584802 U CN203584802 U CN 203584802U CN 201320698927 U CN201320698927 U CN 201320698927U CN 203584802 U CN203584802 U CN 203584802U
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- CN
- China
- Prior art keywords
- pump
- gear
- gear pump
- pump cover
- cover
- 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 a gear pump. The gear pump comprises a pump body as well as a front pump cover and a rear pump cover, wherein the front pump cover and the rear pump cover are arranged in front and back of the pump body; a driving gear and a driven gear which are mutually meshed are fixed in the pump body by a rolling bearing; the front pump cover is provided with an axial hole; a drive shaft of the driving gear penetrating through the axial hole and is fixed on a drive gear; a sealing device is arranged on the inner wall of the axial hole of the front pump cover. The gear pump is characterized in that the inner wall of the axial hole is also provided with a bearing groove, and a rolling bearing is assembled in the bearing groove. The gear pump has the beneficial effects that the rolling bearing and the gear pump are organically combined together, so that the gear pump can bear great radial force, and the service life of the gear pump is effectively prolonged; the failure of the hydraulic system is reduced; performances of the gear pump cannot be affected.
Description
Technical field
The utility model relates to oil hydraulic pump field, especially a kind of gear pump.
Background technique
Gear pump gear pump is the irreplaceable hydraulic element of farm machinery hydraulic system, its structure as shown in Figure 1, the working principle of gear pump is to rely on formed swept volume between pumping cylinder and engaging gear to change and the mobile rotary pump of carrying liquid or making it supercharging: by two gears, the pump housing and front and rear covers form two enclosed spaces, when gear rotates, the volume in the space of the side that is out of gear is large from little change, form vacuum, liquid is sucked, the volume in the space of gear engagement side is from diminishing greatly, and being clamp-oned in pipeline, goes liquid, suction chamber and discharge side are to lean on the line of contact of two gears to separate.The feature of gear pump is exactly that volume simple and compact for structure is little, poor but deficiency is exactly the ability to bear of radial force.
Model utility content
The purpose of this utility model is to provide a kind ofly can bear larger radial force, and don't affects the gear pump of its working state.
In order to complete above-mentioned purpose, the technical solution adopted in the utility model is:
A kind of gear pump, comprise the pump housing and be arranged on front pump cover and the rear pump cover before and after it, in the pump housing, by rolling bearing, be fixed with intermeshing driving gear and driven gear, front pump cover is provided with axis hole, the transmission shaft of driving gear fixes through axis hole and driving gear, front pump cover is provided with seal arrangement at shaft hole inner wall, and described shaft hole inner wall is also provided with bearing groove, is equipped with rolling bearing in bearing groove.
Described bearing groove is arranged between seal arrangement and driving gear.
The external diameter of described bearing groove is greater than the external diameter of seal arrangement.
Described seal arrangement is oil-sealing arrangement.
The beneficial effects of the utility model are: rolling bearing and gear pump are combined, make gear pump can bear larger radial force, thereby effectively raise the working life of gear pump, reduce the generation of hydraulic system fault, and can not exert an influence to gear pump performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing gear pump.
Fig. 2 is structural representation of the present utility model.
In figure, 1, the pump housing, 2, front pump cover, 3, rear pump cover, 4, driving gear, 5, driven gear, 6, transmission shaft, 7, driving gear, 8, seal arrangement, 9, bearing groove.
Embodiment
The utility model is a kind of gear pump, rolling bearing and gear pump are combined, make gear pump can bear larger radial force, thereby effectively raise the working life of gear pump, reduce the generation of hydraulic system fault, and can not exert an influence to gear pump performance.
Below in conjunction with accompanying drawing, the utility model is described further.
Specific embodiment, as shown in Figure 2, a kind of gear pump, comprise the pump housing 1 and be arranged on front pump cover 2 and the rear pump cover 3 before and after it, in the pump housing 1, by rolling bearing, be fixed with intermeshing driving gear 4 and driven gear 5, front pump cover 2 is provided with axis hole, the transmission shaft 6 of driving gear 4 fixes through axis hole and driving gear 7, front pump cover 2 is provided with seal arrangement 8 at shaft hole inner wall, seal arrangement 8 is oil-sealing arrangement, described shaft hole inner wall is also provided with bearing groove 9, in bearing groove 9, be equipped with rolling bearing, for the ease of rolling bearing is installed, bearing groove 9 is arranged between seal arrangement 8 and driving gear 7, the external diameter of bearing groove 9 is arranged to be greater than to the external diameter of seal arrangement 8.
The utility model combines rolling bearing and gear pump, makes gear pump can bear larger radial force, thereby effectively raises the working life of gear pump, reduces the generation of hydraulic system fault, and can not exert an influence to gear pump performance.
Claims (4)
1. a gear pump, comprise the pump housing (1) and be arranged on front pump cover (2) and the rear pump cover (3) before and after it, in the pump housing (1), by rolling bearing, be fixed with intermeshing driving gear (4) and driven gear (5), front pump cover (2) is provided with axis hole, the transmission shaft (6) of driving gear (4) fixes through axis hole and driving gear (7), front pump cover (2) is provided with seal arrangement (8) at shaft hole inner wall, it is characterized in that: described shaft hole inner wall is also provided with bearing groove (9), in bearing groove (9), be equipped with rolling bearing.
2. a kind of gear pump according to claim 1, is characterized in that: described bearing groove (9) is arranged between seal arrangement (8) and driving gear (7).
3. a kind of gear pump according to claim 1, is characterized in that: the external diameter of described bearing groove (9) is greater than the external diameter of seal arrangement (8).
4. a kind of gear pump according to claim 1, is characterized in that: described seal arrangement (8) is oil-sealing arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320698927.8U CN203584802U (en) | 2013-11-07 | 2013-11-07 | Gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320698927.8U CN203584802U (en) | 2013-11-07 | 2013-11-07 | Gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203584802U true CN203584802U (en) | 2014-05-07 |
Family
ID=50582734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320698927.8U Expired - Fee Related CN203584802U (en) | 2013-11-07 | 2013-11-07 | Gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203584802U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090258A (en) * | 2015-08-04 | 2015-11-25 | 广州泰旺精密机械有限公司 | Rolling bearing structure of gear pump and gear pump |
-
2013
- 2013-11-07 CN CN201320698927.8U patent/CN203584802U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090258A (en) * | 2015-08-04 | 2015-11-25 | 广州泰旺精密机械有限公司 | Rolling bearing structure of gear pump and gear pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 Termination date: 20201107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |