CN2811605Y - High pressure leakage preventing oil pump - Google Patents
High pressure leakage preventing oil pump Download PDFInfo
- Publication number
- CN2811605Y CN2811605Y CN 200520085905 CN200520085905U CN2811605Y CN 2811605 Y CN2811605 Y CN 2811605Y CN 200520085905 CN200520085905 CN 200520085905 CN 200520085905 U CN200520085905 U CN 200520085905U CN 2811605 Y CN2811605 Y CN 2811605Y
- Authority
- CN
- China
- Prior art keywords
- gear
- end cap
- oil pump
- electric motor
- high pressure
- 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
Links
Abstract
A kind of anti-high pressure leaks oil pump belongs to gear-type oil pump, mainly solves the high pressure leaks problem.It comprises that motor shaft and driving gear, gear shaft and driven gear, intermeshing driving gear and driven gear are sealed in the gear chamber, oil inlet hole, oil outlet communicate with gear chamber, it is characterized in that, described gear chamber is formed the primary seal layer by interior cover and both sides gear end cap, the secondary seal layer of being made up of overcoat, oil pump end cap, electric motor end cap at primary seal layer peripheral hardware; Motor shaft is arranged in electric motor end cap, the both sides gear ending cover hole by bearing; Gear shaft by bearing be arranged at both sides gear end cap another in the concentric hole; Electric motor end cap, overcoat, oil pump end cap are fastenedly connected by the concentric hole that the three is equipped with by bolt.Its cost is low, the life-span is long, high pressure is non-leakage.Be suitable for the high-pressure oil feed environment.
Description
Technical field
The utility model relates to a kind of gear-type oil pump, particularly a kind of anti-high pressure leaks oil pump.
Background technique
Its structural principle of gear-type oil pump has been mature technology, but in different applications, its structural requirement is different, the performance that need have anti-high pressure leaks as existing wood splitting machine oil pump, but existing wood splitting machine oil pump is owing to adopt the pack alloy end cap, solve the high pressure oil leakage problems, have 3 deficiencies:
The one, the mechanical strength of aluminium is low, hardness is lower, not wear-resisting.
Because gear hardness ratio aluminum alloy height, so gear face and the friction of the Aluminum Alloy Cover Aluminum Alloy Cover of will wearing and tearing soon at work, the gap between gear face and the end cap is strengthened like this, makes the high pressure oil leakage, the decline of wood splitting machine pressure.
The 2nd, although the oil pump end cap is a pack alloy, density also is not very high, and a pore is slightly arranged unavoidably, and when oil pressure was very high, still seepage for a cover Infiltration Technics has appearred in head it off, sealed this pore slightly.Cost of production and equipment input have so just been increased.
The 3rd, transfer mold is somewhat expensive, product cost is increased and the early investment increase, has reduced the price and the quality competition power of product.
Summary of the invention
The utility model provides a kind of anti-high pressure leaks oil pump in order to solve above three problems exactly, to realize that high pressure is non-leakage, friction durability long, the purpose of low cost of manufacture.
The technical solution of the utility model is: this anti-high pressure leaks oil pump, comprise that motor shaft and driving gear, gear shaft and driven gear, intermeshing driving gear and driven gear are sealed in the gear chamber, oil inlet hole, oil outlet communicate with gear chamber, it is characterized in that, described gear chamber is formed the primary seal layer by interior cover and both sides gear end cap, the secondary seal layer of being made up of overcoat, oil pump end cap, electric motor end cap at primary seal layer peripheral hardware; Motor shaft is arranged in electric motor end cap, the both sides gear ending cover hole by bearing, between motor shaft and electric motor end cap, be provided with seal ring, gear shaft by bearing be arranged at both sides gear end cap another in the concentric hole, the bearing on described motor shaft, the gear shaft is arranged at corresponding driving gear and driven gear both sides branch; Electric motor end cap, overcoat, oil pump end cap are fastenedly connected by the concentric hole that the three is equipped with by bolt.
Further scheme of the present utility model is, is provided with an oil pump liner plate between electric motor end cap, overcoat and a side gear end cap, and motor shaft and corresponding bearing thereof are arranged in the oil pump liner plate hole simultaneously.
The beneficial effects of the utility model are: cost is low, the life-span is long, high pressure is non-leakage.
Description of drawings
Figure is a main sectional view of the present utility model.
Among the figure; 1 electric motor end cap, 2 oil pump liner plates, 3 gear shafts, 4 motor shafts, 5 seal rings, 6 bolts, 7 oil pump end caps, 8 steel balls, 9a bearing, 9b bearing, 10 oil outlets, 11a driving gear, 11b driven gear, 12 gear end caps, 13 gear chamber, 14 overcoats, 15 interior covers.
Embodiment
As shown in the figure.
Should anti-high pressure leaks oil pump, the whole thinking of its technological scheme is, material low with density, that wear resistance is good is done inner chamber, makees overcoat, the high pressure oil pump of a complete double-layer seal of composition with density height, material that non-leakage intensity is high.
The gear chamber 13 that the primary seal layer is made up of the gear end cap 12 of interior cover 15 and both sides.Intermeshing driving gear 11a and driven gear 11b are sealed in the gear chamber 13; The Surface of action of driving gear 11a and driven gear 11b is as the criterion, oil inlet hole (not shown), oil outlet 10 are communicated with the gear chamber 13 of aforementioned Surface of action both sides respectively, and formed the turnover oil pocket of oil pump, oil outlet 10 to the wood splitting machine fuel feeding, makes the wood splitting machine proper functioning by the oil duct on a side gear end cap 12 and the oil pump end cap 7.The gear end cap 12 usefulness wear resisting cast irons of both sides are made, although wear resisting cast iron has micropore and tiny sand holes, they are again by overcoat 14, in the middle of oil pump end cap 7 and oil pump liner plate 2 are sealed in, because these parts all use 45
#Steel plate is manufactured, so non-leakage during high pressure.
The secondary seal layer of forming by overcoat 14, oil pump end cap 7, electric motor end cap 1 at primary seal layer peripheral hardware.If the material of electric motor end cap 1 can't reach the non-leakage effect of high pressure, can outside electric motor end cap 1, be hinged with 45
#The oil pump liner plate 2 that steel plate is done is because 45
#Steel plate density height, high pressure is non-leakage.Oil pump liner plate 2 is between electric motor end cap 1, overcoat 14 and a side gear end cap.
Motor shaft 4 is arranged in electric motor end cap, oil pump liner plate, the both sides gear ending cover hole by bearing 9a.Connect driving gear 11a by the spline that is arranged at the steel ball 8 in motor shaft 4 grooves or be arranged on the motor shaft 4 on the motor shaft 4, the bearing 9a on the described motor shaft 4 is arranged at driving gear 11a both sides branch.For strengthening axial seal, between motor shaft 4 and electric motor end cap 1, be provided with seal ring 5.
Gear shaft 3 by bearing 9b be arranged at both sides gear end cap another in the concentric hole.Bearing 11b on the described gear shaft 3 is arranged at driven gear 11b both sides branch.Gear shaft 3 is between oil pump liner plate 2 and electric motor end cap 1.Be connected by steel ball or spline between gear shaft 3 and the driven gear 11b.
Bearing 9a, bearing 9b make by poly-PTFE.
Electric motor end cap 1, overcoat 14, oil pump end cap 7 are fastenedly connected by the concentric hole that the three is equipped with by bolt 6.Simultaneously oil pump end cap 7 firmly compresses cast iron gear end cap 12 and gear chamber 13 and oil pump liner plate and is fixed on the electric motor end cap 1.
During work, motor shaft 4 drives driving gear 11a, drives driven gear 11b by driving gear 11a and rotates, liquid oils is in the engagement of driving gear 11a and driven gear 11b is rotated, from a side of Surface of action oil is squeezed into the opposite side of Surface of action, discharge, make the wood splitting machine proper functioning through oil outlet 10.
Anti-high pressure leaks oil pump of the present utility model is not limited to use on wood splitting machine.
Claims (2)
1, anti-high pressure leaks oil pump, comprise that motor shaft and driving gear, gear shaft and driven gear, intermeshing driving gear and driven gear are sealed in the gear chamber, oil inlet hole, oil outlet communicate with gear chamber, it is characterized in that, described gear chamber is formed the primary seal layer by interior cover and both sides gear end cap, the secondary seal layer of being made up of overcoat, oil pump end cap, electric motor end cap at primary seal layer peripheral hardware; Motor shaft is arranged in electric motor end cap, the both sides gear ending cover hole by bearing, between motor shaft and electric motor end cap, be provided with seal ring, gear shaft by bearing be arranged at both sides gear end cap another in the concentric hole, the bearing on described motor shaft, the gear shaft is arranged at corresponding driving gear and driven gear both sides branch; Electric motor end cap, overcoat, oil pump end cap are fastenedly connected by the concentric hole that the three is equipped with by bolt.
2, anti-high pressure leaks oil pump according to claim 1 is characterized in that, is provided with an oil pump liner plate between electric motor end cap, overcoat and a side gear end cap, and motor shaft and corresponding bearing thereof are arranged in the oil pump liner plate hole simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520085905 CN2811605Y (en) | 2005-07-29 | 2005-07-29 | High pressure leakage preventing oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520085905 CN2811605Y (en) | 2005-07-29 | 2005-07-29 | High pressure leakage preventing oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2811605Y true CN2811605Y (en) | 2006-08-30 |
Family
ID=36937992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520085905 Expired - Fee Related CN2811605Y (en) | 2005-07-29 | 2005-07-29 | High pressure leakage preventing oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2811605Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899284A (en) * | 2019-04-03 | 2019-06-18 | 合肥长源液压股份有限公司 | A kind of high revolving speed lightweight gear pump |
-
2005
- 2005-07-29 CN CN 200520085905 patent/CN2811605Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899284A (en) * | 2019-04-03 | 2019-06-18 | 合肥长源液压股份有限公司 | A kind of high revolving speed lightweight 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 |