CN203570583U - Oil return device of linearly-conjugated internal gear pump - Google Patents
Oil return device of linearly-conjugated internal gear pump Download PDFInfo
- Publication number
- CN203570583U CN203570583U CN201320695278.6U CN201320695278U CN203570583U CN 203570583 U CN203570583 U CN 203570583U CN 201320695278 U CN201320695278 U CN 201320695278U CN 203570583 U CN203570583 U CN 203570583U
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- CN
- China
- Prior art keywords
- pump
- gear
- oil
- oil return
- gear pump
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 6
- 239000003921 oil Substances 0.000 abstract description 20
- 239000010687 lubricating oil Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses an oil return device of a linearly-conjugated internal gear pump, relating to a gear pump in the field of hydraulic equipment. The oil return device comprises a pump body, a transmission shaft, a front pump cover, an end cover, a rear pump cover, a rolling bearing, an internal gear, an external gear meshed with the internal gear, a bearing and an oil seal, wherein the transmission shaft, the internal gear and the external gear are all arranged in the pump body, an oil return hole is formed in the front pump cover, and the oil return hole is communicated with the bearing. Compared with the prior art, the oil return device disclosed by the utility model can perform secondary utilization of the lubricating oil overflowing from the gear pump body to lubricate the bearing so as to guarantee the working performance of the internal gear pump and prolong the service life of the gear pump.
Description
Technical field
The utility model relates to the gear pump in hydraulic equipment field, relates in particular to the oil return apparatus of linear conjugate internal gearing gear pump.
Background technique
Linear conjugate internal gearing gear pump has that delivery pressure is high, simple in structure, pressure pulsation and the little outstanding advantages of noise, the accurate industrial group of U.S. D1avel company, German Bucher company and SUMITOMO CHEMICAL all in succession buys specialty license and produces, and on various hydraulic machinery equipment, uses.The core technology of this gear pump is a pair of special linear conjugated internal gear pair, and the flank profil of external gear is the easy straight line of processing, and the flank profil of internal gear is the curve of conjugation with it, and the profile of tooth of this design uniqueness not only curvature is little, and contact strength is high; And there is not undercut, flexural strength is also very high; More valuable is while using as crescent gear pump, and protected oil volume is only 1/10th of involute gear, so its pressure pulsation and noise can approach the level of screw pump.
The rear pump cover that current linear conjugate internal gearing gear pump generally includes the pump housing, is arranged on the front pump cover of pump housing front end and is arranged on pump housing rear end.Owing to having gap between the pump housing and front pump cover, rear pump cover; crescent gear pump in the course of the work; lubricant oil in the pump housing can overflow by gap conventionally; cause the waste of fluid; serious is because fluid is not enough; cause the service behaviour of crescent gear pump unstable, and then affect the working life of gear pump.
Summary of the invention
The utility model is for deficiency of the prior art, the oil return apparatus of linear conjugate internal gearing gear pump is provided, the lubricating oil overflowing can have been carried out to secondary utilization in gear pump body, bearing has been lubricated, and then the service behaviour of assurance crescent gear pump, the working life of prolongation gear pump.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals: the oil return apparatus of linear conjugate internal gearing gear pump, comprise the pump housing, transmission shaft, front pump cover, end cap, rear pump cover, rolling bearing, internal gear and the external gear, bearing, the oil sealing that mesh with internal gear, described transmission shaft, internal gear, external gear are all arranged in the pump housing, in described front pump cover, be provided with spill port, described spill port is communicated with described bearing.Such setting, can carry out secondary utilization by the lubricating oil overflowing in gear pump body, and bearing is lubricated.
In order to obtain better technique effect, further technological improvement also comprises, the ear end face of the described pump housing is provided with the first oil-return groove, and the ear end face of described front pump cover is provided with the second oil-return groove.Such setting, makes convenient processing when machining.
In order to obtain better technique effect, further technological improvement also comprises, in the described pump housing, be provided with the second spill port, described the second spill port is communicated with described the first oil-return groove, described the second oil-return groove and described the first spill port successively.Such setting, can be transported to bearing by the lubricant oil in gear pump body in time, and bearing is lubricated.
In order to obtain better technique effect, further technological improvement also comprises, before described bearing is positioned at described oil sealing.
The beneficial effects of the utility model are: the lubricating oil overflowing in gear pump body can be carried out to secondary utilization, bearing is lubricated, and then guarantee the service behaviour of crescent gear pump, extend the working life of gear pump.
Accompanying drawing explanation
Fig. 1 is the overall schematic of the oil return apparatus of the utility model linear conjugate internal gearing gear pump.
Fig. 2 is the rear view of the utility model linear conjugate internal gearing gear pump.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Shown in Fig. 1 and Fig. 2, a kind of specific embodiment of the oil return apparatus of the utility model linear conjugate internal gearing gear pump.The oil return apparatus of linear conjugate internal gearing gear pump, comprise the pump housing 1, transmission shaft 2, front pump cover 3, end cap 4, rear pump cover 5, rolling bearing 6, internal gear 7 and the external gear 8, the oil sealing 9 that mesh with internal gear 7, described transmission shaft 2, internal gear 7, external gear 8 are all arranged in the pump housing 1, in described front pump cover 3, be provided with the first spill port 31, described the first spill port 31 is communicated with described bearing 6, such setting, the lubricating oil overflowing in gear pump body can be carried out to secondary utilization, bearing is lubricated.The ear end face of the described pump housing 1 is provided with the first oil-return groove 11, and the ear end face of described front pump cover 3 is provided with the second oil-return groove 32, and such setting makes convenient processing when machining.In the described pump housing 1, be provided with the second spill port 12, described the second spill port 12 is communicated with described the first oil-return groove 11, described the second oil-return groove 32 and described the first spill port 31 successively, such setting, can be transported to bearing by the lubricating oil in gear pump body in time, and bearing is lubricated.In order to obtain better technique effect, further technological improvement also comprises, before described bearing is positioned at described oil sealing.
What more than enumerate is only specific embodiment of the utility model, and obviously, the utility model is not limited to above embodiment.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model, all should belong to protection domain of the present utility model.
Claims (4)
1. the oil return apparatus of linear conjugate internal gearing gear pump, comprise the pump housing (1), transmission shaft (2), front pump cover (3), end cap (4), rear pump cover (5), rolling bearing (6), internal gear (7) and the external gear (8), the oil sealing (9) that mesh with internal gear (7), described transmission shaft (2), internal gear (7), external gear (8) are all arranged in the pump housing (1), it is characterized in that: in described front pump cover (3), be provided with the first spill port (31), described the first spill port (31) is communicated with described bearing (6).
2. the oil return apparatus of linear conjugate internal gearing gear pump according to claim 1, is characterized in that: the ear end face of the described pump housing (1) is provided with the first oil-return groove (11), and the ear end face of described front pump cover (3) is provided with the second oil-return groove (32).
3. the oil return apparatus of linear conjugate internal gearing gear pump according to claim 1 and 2, it is characterized in that: in the described pump housing (1), be provided with the second spill port (12), described the second spill port (12) is communicated with described the first oil-return groove (11), described the second oil-return groove (32) and described the first spill port (31) successively.
4. the oil return apparatus of linear conjugate internal gearing gear pump according to claim 1, is characterized in that: described bearing (6) is positioned at described oil sealing (9) before.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320695278.6U CN203570583U (en) | 2013-11-06 | 2013-11-06 | Oil return device of linearly-conjugated internal gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320695278.6U CN203570583U (en) | 2013-11-06 | 2013-11-06 | Oil return device of linearly-conjugated internal gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203570583U true CN203570583U (en) | 2014-04-30 |
Family
ID=50538316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320695278.6U Expired - Lifetime CN203570583U (en) | 2013-11-06 | 2013-11-06 | Oil return device of linearly-conjugated internal gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203570583U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302932A (en) * | 2020-11-11 | 2021-02-02 | 湖南机油泵股份有限公司 | Displacement-variable vane pump capable of avoiding pressure drop during temperature rise |
| EP3236074B1 (en) * | 2016-04-21 | 2024-01-31 | Schwäbische Hüttenwerke Automotive GmbH | Rotary pump having lubricating groove in sealing bar |
-
2013
- 2013-11-06 CN CN201320695278.6U patent/CN203570583U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3236074B1 (en) * | 2016-04-21 | 2024-01-31 | Schwäbische Hüttenwerke Automotive GmbH | Rotary pump having lubricating groove in sealing bar |
| CN112302932A (en) * | 2020-11-11 | 2021-02-02 | 湖南机油泵股份有限公司 | Displacement-variable vane pump capable of avoiding pressure drop during temperature rise |
| CN112302932B (en) * | 2020-11-11 | 2022-11-08 | 湖南机油泵股份有限公司 | Displacement-variable vane pump capable of avoiding pressure drop during temperature rise |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140430 |
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| CX01 | Expiry of patent term |