CN204663874U - Middle high-pressure external gear pump axle sleeve - Google Patents
Middle high-pressure external gear pump axle sleeve Download PDFInfo
- Publication number
- CN204663874U CN204663874U CN201520306128.0U CN201520306128U CN204663874U CN 204663874 U CN204663874 U CN 204663874U CN 201520306128 U CN201520306128 U CN 201520306128U CN 204663874 U CN204663874 U CN 204663874U
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- CN
- China
- Prior art keywords
- axle sleeve
- gear pump
- face
- groove
- lining
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses middle high-pressure external gear pump axle sleeve, this gear pump sleeve comprises axle sleeve matrix (2), and axle sleeve matrix (2) is close to face processing seal groove (5) of the forward and backward end cap of gear pump, and seal groove (5) is left-right asymmetry; Press-in DU lining (1) in the holes of axle sleeve matrix (2), the opening (4) of DU lining (1) is in high pressure side, and DU lining (1) is positioned at one end of seal groove (5) and end face of shaft bush at same plane; Compensating groove (3) is left in the face that axle sleeve matrix (2) and gear face are close to, and when compensating groove (3) the inner side line of rabbet joint and gear pump are in minimum protected oil volume, the contacting profile of driving gear is tangent; The annular groove (6) of axle sleeve matrix (2) periphery open semicircle shape, annular groove (6) is positioned at the side that axle sleeve matrix (2) is close to gear face, and annular groove (6) communicates with hyperbaric chamber.The utility model greatly reduces pocketed oil pressure peak, alleviates entrap phenomenon, reduces the leakage of radial imbalance force and oil.
Description
Technical field
The utility model relates to gear pump part, is specifically with the external gear pump axle sleeve of compensating groove and seal groove.
Background technique
Gear pump structure is simple, and easy to manufacture, cost is low, so be widely used.But there is the problems such as entrap phenomenon, leakage and radial force imbalance in gear pump, cause the output flow pulsation of gear pump large, noise is large, and more obvious under high pressure.Along with axis, radial clearance compensate the utilization as adopted the method such as floating buss, floating side plate, the pressure rating of gear pump significantly improves, and reaches as high as 33Mpa.The using scope of gear pump expands further, will bring larger technological value and economic benefit.
Summary of the invention
The purpose of this utility model is: provide a kind of middle high-pressure external gear pump axle sleeve, have compensating groove, seal groove and annular groove, rational in infrastructure, reduces and leaks, and reduces noise.
The technical solution that the utility model proposes is: this gear pump sleeve comprises axle sleeve matrix; The face that axle sleeve matrix is close to the forward and backward end cap of gear pump is processed with seal groove, and seal groove is left-right asymmetry; Press-in DU lining in the holes of axle sleeve matrix, DU lining lining opening is in high pressure side, and DU lining is positioned at one end of seal groove and end face of shaft bush at same plane; Compensating groove is left in that face that axle sleeve matrix and gear face are close to, and when the inner side line of rabbet joint of compensating groove and gear pump are in minimum protected oil volume, the contacting profile of driving gear is tangent; The annular groove of the periphery open semicircle shape of axle sleeve matrix, annular groove is positioned at the side that axle sleeve matrix and gear face are close to, and annular groove communicates with hyperbaric chamber.
Wherein, the degree of depth of compensating groove is 2-4mm, or determines as required.
The utility model has the advantages that:
1, axle sleeve base end leaves seal groove, contribute to reducing and leak, on the one hand the oily carrying-off leaked, the point of action of regulating action impacting force on axle sleeve on the other hand, make it to overlap with the hydraulic pressure extrapolability point of action acted on axle sleeve, axle sleeve can not produce additional force couple.
2, DU lining mould press-in axle sleeve matrix, when pressing, excircle of bushing and axle sleeve matrix inner hole do not allow to produce and cut phenomenon; DU lining opening, in high pressure side, is convenient to the lubrication of gear shaft; DU lining is positioned at one end of seal groove and end face of shaft bush at same plane, does not allow to exceed end face of shaft bush.
3, compensating groove is opened in that face that axle sleeve matrix and gear face are close to, and compensating groove effectively alleviates the entrap phenomenon of middle high-pressure gear pump.
4, the annular groove of open semicircle shape on axle sleeve interior edge face, annular groove makes the effect tooth top of transition zone having high pressure oil, only within the scope of low-pressure cavity 1 ~ 2 tooth, directly do not lead to pressure oil, like this, tooth top and pump case sidewall play main seal effect with regard to 1 ~ 2 tooth, tooth top periphery major part is subject to the effect of high pressure oil, pressure substantial symmetry, thus radial imbalance force is reduced greatly, decrease the pulsation of gear pump flow, reduce noise.
5, this gear pump sleeve greatly reduces pocketed oil pressure peak, alleviates entrap phenomenon, reduces the leakage of radial imbalance force and oil, is suitable in middle high-pressure external gear pump.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is axle sleeve assembly schematic diagram.
Fig. 2 is gear, axle sleeve assembly, the front and rear cover assembling schematic diagram of gear pump.
In figure: 1 DU lining, 2 axle sleeve matrixes, 3 compensating grooves, 4 lining openings, 5 seal grooves, 6 annular grooves.
Embodiment
As shown in Figure 1, 2, this gear pump sleeve comprises axle sleeve matrix 2; The face that axle sleeve matrix 2 is close to the forward and backward end cap of gear pump is processed with seal groove 5, and seal groove 5 is left-right asymmetry; In the holes of axle sleeve matrix 2, the lining opening 4 of press-in DU lining 1, DU lining 1 is in high pressure side, and DU lining 1 is positioned at one end of seal groove 5 and end face of shaft bush at same plane; Compensating groove 3 is left in that face that axle sleeve matrix 2 and gear face are close to, and when the inner side line of rabbet joint of compensating groove 3 and gear pump are in minimum protected oil volume, the contacting profile of driving gear is tangent; The annular groove 6 of the periphery open semicircle shape of axle sleeve matrix 2, annular groove 6 is positioned at axle sleeve matrix 2 and is close to the side with gear face, and annular groove 6 communicates with hyperbaric chamber.
Wherein, the degree of depth of compensating groove 3 is 2-4mm, or determines as required.
Claims (2)
1. middle high-pressure external gear pump axle sleeve, this gear pump sleeve comprises axle sleeve matrix (2), it is characterized in that: the face that axle sleeve matrix (2) is close to the forward and backward end cap of gear pump is processed with seal groove (5), and seal groove (5) is left-right asymmetry; Press-in DU lining (1) in the holes of axle sleeve matrix (2), the lining opening (4) of DU lining (1) is in high pressure side, and DU lining (1) is positioned at one end of seal groove (5) and end face of shaft bush at same plane; Compensating groove (3) is left in that face that axle sleeve matrix (2) and gear face are close to, and when the inner side line of rabbet joint of compensating groove (3) and gear pump are in minimum protected oil volume, the contacting profile of driving gear is tangent; The annular groove (6) of the periphery open semicircle shape of axle sleeve matrix (2), annular groove (6) is positioned at the side that axle sleeve matrix (2) is close to gear face, and annular groove (6) communicates with hyperbaric chamber.
2. middle high-pressure external gear pump axle sleeve according to claim 1, is characterized in that: the degree of depth of compensating groove (3) is 2-4mm, or determines as required.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520306128.0U CN204663874U (en) | 2015-05-13 | 2015-05-13 | Middle high-pressure external gear pump axle sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520306128.0U CN204663874U (en) | 2015-05-13 | 2015-05-13 | Middle high-pressure external gear pump axle sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204663874U true CN204663874U (en) | 2015-09-23 |
Family
ID=54134262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520306128.0U Expired - Fee Related CN204663874U (en) | 2015-05-13 | 2015-05-13 | Middle high-pressure external gear pump axle sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204663874U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107781159A (en) * | 2016-08-29 | 2018-03-09 | 河南航天液压气动技术有限公司 | A kind of pump with spring-compensating firmly balances oil film sliding shaft sleeve |
| US11060559B2 (en) * | 2018-06-11 | 2021-07-13 | Eaton Intelligent Power Limited | Bi-metallic journal bearing with additive manufactured sleeve |
-
2015
- 2015-05-13 CN CN201520306128.0U patent/CN204663874U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107781159A (en) * | 2016-08-29 | 2018-03-09 | 河南航天液压气动技术有限公司 | A kind of pump with spring-compensating firmly balances oil film sliding shaft sleeve |
| US11060559B2 (en) * | 2018-06-11 | 2021-07-13 | Eaton Intelligent Power Limited | Bi-metallic journal bearing with additive manufactured sleeve |
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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: 20150923 Termination date: 20160513 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |