CN201582113U - External closed oil pump - Google Patents
External closed oil pump Download PDFInfo
- Publication number
- CN201582113U CN201582113U CN2009202026886U CN200920202688U CN201582113U CN 201582113 U CN201582113 U CN 201582113U CN 2009202026886 U CN2009202026886 U CN 2009202026886U CN 200920202688 U CN200920202688 U CN 200920202688U CN 201582113 U CN201582113 U CN 201582113U
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- China
- Prior art keywords
- pump
- oil
- tooth wheel
- wheel shaft
- gear shaft
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- Expired - Fee Related
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Abstract
The utility model relates to an oil pump, in particular to an external closed oil pump applied to lubricating engines and preventing oil leakage, which includes a pump body, a pump cover, a drive gear shaft and a driven gear shaft; the pump body and the pump cover are respectively provided with two relief notches; the axial holes of the pump body and the pump cover matched with the drive gear shaft and the driven gear shaft are penetrated; the external closed oil pump is characterized in that the relief notches on the pump cover and the pump body corresponding to an oil suction cavity are respectively provided with an oil return hole; the oil return hole leads the tail ends of the axial holes of the drive gear shaft and the driven gear shaft to be communicated with the oil suction cavity to form a lubricating oil loop; and blind holes are arranged on the pump body and the pump cover corresponding to the tail ends of the axial holes of the drive gear shaft and the driven gear shaft to form a closed type so as to lead the tail ends of the axial holes to be communicated with the oil suction cavity of the pump to form a lubricating oil loop and guarantee the reliable lubrication of the shaft; moreover, oil can not leak to the outside of the pump, thereby causing no pollution to the environment and effectively preventing the failure of suspension.
Description
Technical field
The utility model relates to oil pump, particularly a kind ofly is applied to the external enclosed type oil pump that engine lubrication prevents leakage of oil again.
Background technique
External oil pump in the past, its structure comprises the pump housing, pump cover, driving gear shaft and passive tooth wheel shaft, 2 compensating grooves are respectively arranged on the pump housing and the pump cover, and the pump housing, pump cover connect with the axis hole that driving gear shaft, passive tooth wheel shaft cooperate, and can guarantee the lubricating function of motor; Because with active and passive gear axle corresponding section through hole was arranged originally on the pump cover, on the pump housing, through hole was originally also arranged with passive tooth wheel shaft corresponding section, prevent owing to the seize fault takes place the pressure reduction relation, but this oil pump its high pressure oil when operation can pass through the axis hole leakage of oil, because the machine oil that the external oil pump spills can not flow back to fuel tank, can cause the waste of machine oil so on the one hand, the aspect can cause the pollution to environment in addition.
The model utility content
The purpose of this utility model is at above-mentioned defective, and a kind of external enclosed type oil pump that engine lubrication prevents leakage of oil again that is applied to is provided.
The technical solution of the utility model is at original external oil pump, when the machine oil pump shaft rotates, high pressure oil in its pump can be by axis hole to the pump external leakage, when though this oil pump can guarantee that pump shaft rotates with the pump housing, pump cover between lubricate, reduce the abrasion of the pump shaft and the pump housing, pump cover axis hole, but because can be from axis hole toward external leakage machine oil, in order to reduce the leakage of machine oil, common way is the gap of reducing pump shaft and the pump housing, pump cover axis hole, but the hidden danger of this way existence is to cause the generation of seize fault easily; How could allow oil pump not leak machine oil from the pump shaft axis hole? if the axis hole of pump is closed, just the axis hole of the pump housing, pump cover is made blind hole, though solved the leakage problem of machine oil, but bringing new problem is after the axis hole of the pump housing, pump cover is made blind hole, the gas in blind hole district can not be discharged, because the relation of pressure reduction, machine oil go to be lubricated in the gap of ostium axle effectively, also can cause the generation of seize fault.In order to address this problem, we have designed the oil return pore passage structure on the pump housing, the oil return duct communicates with the oil sucting cavity of pump, because of being low pressure in the oil sucting cavity, so just can making machine oil in the pump produce high pressure and make machine oil flow to that the hole axle is lubricated and flow back to oil sucting cavity by the oil return duct forms current lubrication by the pumping cavity in the pump.Reach when both guaranteeing that pump shaft rotates with the pump housing, pump cover between lubricate, again can be and the purpose of befouling environment to pump external leakage machine oil.
The structure of spill port is respectively to be drilled with spill port on the pump cover and the pump housing with in the corresponding compensating groove of oil sucting cavity; This spill port makes the master, passive tooth wheel shaft axis hole is terminal communicates with the oil sucting cavity of pump, forms oil circuit; To be that blind hole becomes closed with the terminal corresponding section of master, passive tooth wheel shaft axis hole on the pump housing, pump cover.
Form circular groove with master, passive tooth wheel shaft corresponding section on the said pump cover inner chamber; Also form circular groove with passive tooth wheel shaft corresponding section on the said pump housing inner chamber.
Be drilled with 2 spill ports on the said pump cover with in the corresponding compensating groove of oil sucting cavity, a spill port leads to passive tooth wheel shaft axis hole end, and another spill port leads to driving gear shaft axis hole end; Be drilled with a spill port on the said pump housing with in the corresponding compensating groove of oil sucting cavity, this spill port leads to passive tooth wheel shaft axis hole end.
The utility model has the advantages that owing to be drilled with spill port in the compensating groove that is provided with on the pump housing, pump cover makes the axis hole end communicate with the oil sucting cavity of pump with master, the terminal oil circuit passage that forms of passive tooth wheel shaft axis hole, add the circular groove that constitutes with the terminal space of gear shaft axis hole on the inner chamber of upper pump casing and pump cover, form oil circuit, thereby guaranteed the proper lubrication of axle, also solved the seize problem; Simultaneously on the pump housing, pump cover with master, passive tooth wheel shaft axis hole corresponding section, original through hole is made blind hole, it is closed that pump is become, thereby solved the leakage of oil problem.
Description of drawings
Fig. 1 is the structure enlarged diagram of the oil pump pump housing.
Fig. 2 is the structure enlarged diagram of engine oil pump cover.
Fig. 3 is the side direction view of pump cover.
Fig. 4 is compensating groove and the terminal oil return of gear shaft axis hole duct cross-sectional schematic.
Fig. 5 is the integrally-built cross-sectional schematic of the utility model.
Embodiment
Further specify embodiment below in conjunction with accompanying drawing.
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5,1-passive tooth wheel shaft, 2-driving gear shaft, 3-nut, 4-key, 5-pump assembly, 6-pump cover assembly, 7-axis hole, 8-blind hole.As shown in Figure 1, axis hole and pump inner chamber main, the passive tooth wheel shaft are installed on the pump housing 5 are connected, there is cavity axis hole 7 expression gear shafts and the pump housing 5 joints.As shown in Figure 2, through hole is originally in main with installation on the pump cover 6, passive tooth wheel shaft axis hole corresponding section, now is improved to blind hole 8, makes pump cover become closed.As shown in Figure 5, driving gear shaft 2 is connected with a joggle with passive tooth wheel shaft 1, on the pump housing 5 with the terminal corresponding A place of the passive tooth wheel shaft 1 axis hole former through hole before this in position, now change blind hole into, in like manner also change blind hole at pump cover 6 into the former through hole before this in 2 A places main, the terminal corresponding position of passive tooth wheel shaft axis hole, it is closed that whole oil pump is made.From figure, also find out, with passive tooth wheel shaft 1 corresponding section, leave the space when installing with the pump housing 5 on the pump housing 5 inner chambers, also be with axle sleeve on the passive tooth wheel shaft 1, form circular groove owing to passive tooth wheel shaft 1; In like manner on pump cover 6 inner chambers with driving gear shaft 2 and passive tooth wheel shaft 1 corresponding section, also form circular groove, also be with axle sleeve on the driving gear shaft 2.In 2 compensating grooves on the pump housing 5, one communicates with pumping cavity (zone of high pressure), and another communicates with oil sucting cavity (low pressure area), and is drilled with a spill port in the compensating groove that oil sucting cavity communicates, and this spill port leads to passive tooth wheel shaft 1 axis hole end.
As shown in Figure 3, the lubricating structure of axle is that in the drawings B place gets out lubricated duct, make that axis hole is terminal to communicate with the oil sucting cavity of pump, formation lubricating loop, a proper lubrication that has guaranteed spool.As seen from the figure, 2 compensating grooves were originally just arranged on pump cover 6 inner chambers, the compensating groove on the left side communicates with pumping cavity (zone of high pressure), the compensating groove on the right communicates with oil sucting cavity (low pressure area), the compensating groove B place on the right indicates the trend of spill port, just be drilled with 2 spill ports on the pump cover 6 with in the corresponding compensating groove of oil sucting cavity, one leads to passive tooth wheel shaft 1 axis hole end, and another spill port leads to driving gear shaft 2 axis hole ends.
As Fig. 4, be a partial sectional view at B place among Fig. 3.As seen from the figure, the I place is exactly a compensating groove, and the B place then is that the terminal spill port of compensating groove and axis hole moves towards situation, the axis hole end is communicated with compensating groove, thereby communicate with oil sucting cavity.Spill port communicates with the oil sucting cavity of pump, because of being low pressure in the oil sucting cavity, machine oil in the pump just can make machine oil flow to the hole axle by the high pressure that the pumping cavity in the pump produces to be lubricated like this, and flows back to oil sucting cavity formation current lubrication by spill port, thereby has prevented the seize fault.
Claims (3)
1. external enclosed type oil pump, comprise the pump housing, pump cover, driving gear shaft and passive tooth wheel shaft, 2 compensating grooves are respectively arranged on the pump housing and the pump cover, the pump housing, pump cover connect with the axis hole that master, passive tooth wheel shaft cooperate, and it is characterized in that respectively being drilled with spill port on the said pump cover and the pump housing with in the corresponding compensating groove of oil sucting cavity; This spill port makes the master, passive tooth wheel shaft axis hole is terminal communicates with the oil sucting cavity of pump, forms oil circuit; To be that blind hole becomes closed with the terminal corresponding section of master, passive tooth wheel shaft axis hole on the pump housing, pump cover.
2. according to the said external enclosed type oil pump of claim 1, it is characterized in that forming circular groove with master, passive tooth wheel shaft corresponding section on the said pump cover inner chamber; Also form circular groove with passive tooth wheel shaft corresponding section on the said pump housing inner chamber.
3. according to the said external enclosed type oil pump of claim 1, it is characterized in that being drilled with 2 spill ports on the said pump cover with in the corresponding compensating groove of oil sucting cavity, a spill port leads to passive tooth wheel shaft shaft end, and another spill port leads to driving gear shaft axis hole end; Be drilled with a spill port on the said pump housing with in the corresponding compensating groove of oil sucting cavity, this spill port leads to passive tooth wheel shaft axis hole end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202026886U CN201582113U (en) | 2009-12-25 | 2009-12-25 | External closed oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202026886U CN201582113U (en) | 2009-12-25 | 2009-12-25 | External closed oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201582113U true CN201582113U (en) | 2010-09-15 |
Family
ID=42724111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202026886U Expired - Fee Related CN201582113U (en) | 2009-12-25 | 2009-12-25 | External closed oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201582113U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829315A (en) * | 2012-08-30 | 2012-12-19 | 浙江平柴泵业有限公司 | Leakage-free energy-saving oil pump |
| CN102878071A (en) * | 2012-10-04 | 2013-01-16 | 张意立 | Special gear pump |
| CN102878073A (en) * | 2012-10-04 | 2013-01-16 | 张意立 | Gear pump |
| CN109931488A (en) * | 2018-09-27 | 2019-06-25 | 湖南机油泵股份有限公司 | A kind of lubricating oil pump being avoided that inordinate wear |
-
2009
- 2009-12-25 CN CN2009202026886U patent/CN201582113U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829315A (en) * | 2012-08-30 | 2012-12-19 | 浙江平柴泵业有限公司 | Leakage-free energy-saving oil pump |
| CN102829315B (en) * | 2012-08-30 | 2015-05-20 | 浙江平柴泵业有限公司 | Leakage-free energy-saving oil pump |
| CN102878071A (en) * | 2012-10-04 | 2013-01-16 | 张意立 | Special gear pump |
| CN102878073A (en) * | 2012-10-04 | 2013-01-16 | 张意立 | Gear pump |
| CN109931488A (en) * | 2018-09-27 | 2019-06-25 | 湖南机油泵股份有限公司 | A kind of lubricating oil pump being avoided that inordinate wear |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20181225 |