CN2773351Y - Local hydraulic compensated gear pump - Google Patents
Local hydraulic compensated gear pump Download PDFInfo
- Publication number
- CN2773351Y CN2773351Y CN 200520069601 CN200520069601U CN2773351Y CN 2773351 Y CN2773351 Y CN 2773351Y CN 200520069601 CN200520069601 CN 200520069601 CN 200520069601 U CN200520069601 U CN 200520069601U CN 2773351 Y CN2773351 Y CN 2773351Y
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- CN
- China
- Prior art keywords
- gear shaft
- side plate
- pump cover
- mentioned
- 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 - Fee Related
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Abstract
The utility model discloses a local hydraulic compensated gear pump, which comprises a front pump cover (1), a pump body (2) and a back pump cover (3), wherein a driving gear shaft (4) and a driven gear shaft (5) can be arranged in the pump body (2). Fixed lateral plates (6), (7) are arranged on both sides of the driving gear shaft (4) and the driven gear shaft (5). In addition, the driving gear shaft (4) and the driven gear shaft (5) are supported in a sliding manner bearings (41), (42), (51), (52), and local floating lateral plates (81), (82), (91), (92) are arranged in through holes (61), (62), (71), (72). The friction can not easily generated between a lateral plates of the gear pump and gears, and both sides of the lateral plate are stressed and balanced to achieve the effect of self compensation in the axial direction. The utility model has the advantages of stable performance, low noise and long service life.
Description
Technical field
The utility model relates to a kind of gear pump, specifically relates to a kind of local compensation hydraulic formula gear pump.
Technical background
In the prior art, gear pump mainly comprises front pump cover, the pump housing, rear pump cover, driving gear shaft and driven gear shaft are arranged in the pump housing, there are bearing housing or side plate in the both sides of two gears, bearing housing or side plate are introduced the bearing housing or the side plate back side with pumping cavity inner high voltage oil, force bearing housing or side plate under the effect of oil pressure, all the time be adjacent at gear face, and used elastomer seal that the high low pressure of bearing housing or side plate is distinguished, the gear face of this kind gear pump and bearing housing or side sheet room easily produce friction, reduce its mechanical property, and Sealing is easy to damage, influence gear pump performance and operational safety, reduced the working life of gear pump.
Summary of the invention
The utility model technical issues that need to address are, overcome the existing deficiency of existing gear pump, a kind of local compensation hydraulic formula gear pump is provided, it adopts local floating side plate, and side plate and gear are difficult for producing friction, side plate both sides stress balance, reach the effect that axially compensates automatically, this gear pump runnability is stable, and noise is low, long service life.
The technical scheme in the invention for solving the technical problem is: a kind of local compensation hydraulic formula gear pump, it comprises front pump cover, the pump housing, rear pump cover, be equipped with driving gear shaft and driven gear shaft in the pump housing, above-mentioned driving gear shaft and driven gear shaft both sides are equipped with fixed lateral plate, above-mentioned driving gear shaft and driven gear shaft are supported by the sliding bearing that places front pump cover and rear pump cover, above-mentioned front pump cover, rear pump cover, the pump housing and fixed lateral plate adjacent are equipped with Sealing, above-mentioned driving gear shaft stretches out outside the front pump cover and links to each other with external power, be equipped with compensating groove on the said fixing side plate, said fixing side plate central authorities are equipped with unloads oil hole, be equipped with through hole on the said fixing side plate, be equipped with local floating side plate in the above-mentioned through hole, and above-mentioned local floating side plate matches with above-mentioned sliding bearing outer ring respectively.
Seal by the sealing of oil sealing sealing spare between above-mentioned driving gear shaft and the front pump cover.
Be equipped with the floating side plate Sealing between above-mentioned local floating side plate and front pump cover, the rear pump cover.
Above-mentioned local floating side plate is eccentric float plate.
The advantage that local compensation hydraulic formula gear pump of the present utility model has compared with prior art is as follows:
Adopt the structure that is equipped with local floating side plate on the fixed lateral plate, eliminated the entrap phenomenon in the pump chamber, side plate and gear are difficult for producing friction, side plate both sides stress balance, steady pressure alternation district reaches axially the effect of compensation automatically, and side plate is not yielding, running steadily, good seal performance, the pump housing is difficult for heating, has reduced the operation noise, improved unfailing performance, long service life.
Description of drawings
Fig. 1 is the local compensation hydraulic formula of a utility model gear pump structure schematic representation.
Fig. 2 is fixed lateral plate 6,7 normal section views among Fig. 1.
Embodiment
Below in conjunction with accompanying drawing the local compensation hydraulic formula of the utility model gear pump is further described.
As Fig. 1, above-mentioned local compensation hydraulic formula gear pump shown in Figure 2, it comprises front pump cover 1, the pump housing 2, rear pump cover 3, be equipped with driving gear shaft 4 and driven gear shaft 5 in the pump housing 2, above-mentioned driving gear shaft 4 and driven gear shaft 5 both sides are equipped with fixed lateral plate 6,7, above-mentioned driving gear shaft 4 and driven gear shaft 5 are by the sliding bearing 41 that places front pump cover 1 and rear pump cover 3,42,51,52 support, above-mentioned front pump cover 1, rear pump cover 3, the pump housing 2 and fixed lateral plate 6,7 adjacents are equipped with Sealing 16,26,27,37, above-mentioned driving gear shaft 4 stretches out outside the front pump cover 1 and links to each other with external power, said fixing side plate 6, be equipped with compensating groove 63 on 7,64,73,74, said fixing side plate 6,7 central authorities are equipped with unloads oil hole 65,75, said fixing side plate 6, be equipped with through hole 61 on 7,62,71,72, above-mentioned through hole 61,62,71, be equipped with local floating side plate 81 in 72,82,91,92, and above-mentioned local floating side plate 81,82,91,92 respectively with above-mentioned sliding bearing 41,42,51, match in 52 outer rings.Above-mentioned local floating side plate (81) (82), (91), (92) are eccentric float plate.Seal by oil sealing sealing spare sealing 14 between above-mentioned driving gear shaft 4 and the front pump cover 1.Be equipped with floating side plate Sealing 181,182,391,392 between above-mentioned local floating side plate 81,82,91,92 and front pump cover 1, the rear pump cover 3.
Claims (4)
1, a kind of local compensation hydraulic formula gear pump, it comprises front pump cover (1), the pump housing (2), rear pump cover (3), be equipped with driving gear shaft (4) and driven gear shaft (5) in the pump housing (2), above-mentioned driving gear shaft (4) and driven gear shaft (5) both sides are equipped with fixed lateral plate (6), (7), above-mentioned driving gear shaft (4) and driven gear shaft (5) are by the sliding bearing (41) that places front pump cover (1) and rear pump cover (3), (42), (51), (52) support, above-mentioned front pump cover (1), rear pump cover (3), the pump housing (2) and fixed lateral plate (6), (7) adjacent is equipped with Sealing (16), (26), (27), (37), above-mentioned driving gear shaft (4) stretches out outside the front pump cover (1) and links to each other with external power, said fixing side plate (6), (7) be equipped with compensating groove (63) on, (64), (73), (74), said fixing side plate (6), (7) central authorities are equipped with and unload oil hole (65), (75), it is characterized in that: said fixing side plate (6), (7) be equipped with through hole (61) on, (62), (71), (72), above-mentioned through hole (61), (62), (71), (72) be equipped with local floating side plate (81) in, (82), (91), and above-mentioned local floating side plate (81) (82) (92),, (91), (92) respectively with above-mentioned sliding bearing (41), (42), (51), (52) match in the outer ring.
2, local compensation hydraulic formula gear pump according to claim 1 is characterized in that: seal by oil sealing sealing spare sealing (14) between above-mentioned driving gear shaft (4) and the front pump cover (1).
3, local compensation hydraulic formula gear pump according to claim 1 is characterized in that: be equipped with floating side plate Sealing (181), (182), (391), (392) between above-mentioned local floating side plate (81) (82), (91), (92) and front pump cover (1), the rear pump cover (3).
4, local compensation hydraulic formula gear pump according to claim 1 is characterized in that: above-mentioned local floating side plate (81) (82), (91), (92) are eccentric float plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520069601 CN2773351Y (en) | 2005-01-04 | 2005-01-04 | Local hydraulic compensated gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520069601 CN2773351Y (en) | 2005-01-04 | 2005-01-04 | Local hydraulic compensated gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2773351Y true CN2773351Y (en) | 2006-04-19 |
Family
ID=36708614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520069601 Expired - Fee Related CN2773351Y (en) | 2005-01-04 | 2005-01-04 | Local hydraulic compensated gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2773351Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793249A (en) * | 2008-12-09 | 2010-08-04 | 罗伯特·博世有限公司 | Gear pump |
| CN102878073A (en) * | 2012-10-04 | 2013-01-16 | 张意立 | Gear pump |
| CN109737052A (en) * | 2018-12-14 | 2019-05-10 | 中国石油化工股份有限公司 | A kind of gear pump |
-
2005
- 2005-01-04 CN CN 200520069601 patent/CN2773351Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793249A (en) * | 2008-12-09 | 2010-08-04 | 罗伯特·博世有限公司 | Gear pump |
| CN102878073A (en) * | 2012-10-04 | 2013-01-16 | 张意立 | Gear pump |
| CN109737052A (en) * | 2018-12-14 | 2019-05-10 | 中国石油化工股份有限公司 | A kind of gear pump |
| CN109737052B (en) * | 2018-12-14 | 2020-04-17 | 中国石油化工股份有限公司 | Gear pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |