CN109931489A - A kind of impeller pump convenient for remaining oil liquid to be discharged into oil sump - Google Patents

A kind of impeller pump convenient for remaining oil liquid to be discharged into oil sump Download PDF

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Publication number
CN109931489A
CN109931489A CN201910274451.7A CN201910274451A CN109931489A CN 109931489 A CN109931489 A CN 109931489A CN 201910274451 A CN201910274451 A CN 201910274451A CN 109931489 A CN109931489 A CN 109931489A
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CN
China
Prior art keywords
oil
pump housing
air
pump
hole
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Pending
Application number
CN201910274451.7A
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Chinese (zh)
Inventor
李维顺
许仲秋
刘光明
刘铁飞
佘笑梅
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Hunan Oil Pump Co Ltd
Original Assignee
Hunan Oil Pump Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hunan Oil Pump Co Ltd filed Critical Hunan Oil Pump Co Ltd
Priority to CN201910274451.7A priority Critical patent/CN109931489A/en
Publication of CN109931489A publication Critical patent/CN109931489A/en
Pending legal-status Critical Current

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Abstract

A kind of impeller pump convenient for remaining oil liquid to be discharged into oil sump, is related to lubricating system of IC engine, which includes the pump housing, pump cover, internal rotor and outer rotor, and the ring-shaped step of installation crankshaft oil seal is offered on the lateral surface of the pump housing;The edge of pump housing mounting surface is equipped with frame, a notch is offered on the frame of pump housing lower part, after pump cover is installed on the mounting surface of the pump housing, the surface of pump cover is lower than the frame of the pump housing, the oil scupper with the equal length of the axis hole of internal rotor is axially offered on the axis hole of internal rotor, oil liquid between crankshaft oil seal and internal rotor end face can be drained into outside pump cover by oil scupper, then be flowed into oil sump by the notch of the pump housing;Inclined oil hole of air is also provided on the pump housing, the entrance of inclined oil hole of air is provided on ring-shaped step, and outlet is provided with the bottom of the pump housing, and the oil liquid between crankshaft oil seal and ring-shaped step can be drained into oil sump by inclined oil hole of air.The present invention can be very good for some remaining oil liquid and impurity to be discharged into oil sump.

Description

A kind of impeller pump convenient for remaining oil liquid to be discharged into oil sump
Technical field
The present invention relates to lubricating system of IC engine, a kind of especially impeller pump convenient for remaining oil liquid to be discharged into oil sump.
Background technique
Impeller pump is component important in lubricating system as one kind of lubricating oil pump, and function is provided for lubricating system The machine oil of enough pressure and flow, oil pressure must assure that in a certain range, to guarantee that each friction member obtains adequately Lubrication and do not damage relevant pressure part, when work, the oil inlet that the oil liquid from oil sump first passes through impeller pump is inhaled into In low pressure chamber, then it is admitted to high pressure chest, is finally discharged from oil outlet, is sent in the pipeline for needing to lubricate.
As shown in Figure 1, traditional impeller pump mainly includes the pump housing 1, pump cover 2, internal rotor 3 and outer rotor, pump cover 2 is mounted on On the mounting surface (namely other one side opposite with its lateral surface on the pump housing 1) of the pump housing 1, rotor is equipped between pump cover 2 and the pump housing 1 Chamber, internal rotor 3 and outer rotor are intermeshed and are mounted in rotor chamber, and the crankshaft 4 that driving internal rotor 3 rotates extends vertically through pump cover 2, internal rotor 3 and the pump housing 1, the outside of the pump housing 1, which is also equipped with, prevents oil liquid from releasing the crankshaft oil come from the axis hole China and foreign countries on the pump housing 1 Envelope 5, it is generally the case that in order to preferably install crankshaft oil seal 5, one can be opened up on the lateral surface of the pump housing 1 around the pump housing 1 As soon as the ring-shaped step 6 of axis hole circle, crankshaft oil seal 5 are mounted in ring-shaped step 6.However, end of the crankshaft oil seal apart from internal rotor Face can store many oil liquid between the two, when rotor runs at high speed, these oil liquid can be to crankshaft oil seal there are also certain distance Biggish pressure is generated, in addition, can also store some remaining oil liquid and impurity, especially ring between crankshaft oil seal and ring-shaped step The corner location of shape step, these oil liquid and impurity can not equally eject well, this will corrode crankshaft oil seal, reduce The service life of crankshaft oil seal.
Summary of the invention
Impeller pump provided by the invention convenient for remaining oil liquid to be discharged into oil sump, can be by crankshaft oil seal and internal rotor end The oil liquid between oil liquid and crankshaft oil seal and ring-shaped step between face is discharged into oil sump well, to avoid above-mentioned The service life of oil liquid influence crankshaft oil seal.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme: a kind of be convenient for remaining oil liquid being discharged into oil The impeller pump of bottom case, including the pump housing, pump cover, internal rotor and outer rotor offer installation crankshaft oil on the lateral surface of the pump housing The ring-shaped step of envelope;
The edge of the pump housing mounting surface is equipped with frame, and a notch, the pump cover are offered on the frame of pump housing lower part After being installed on the mounting surface of the pump housing, the surface of pump cover is lower than the frame of the pump housing, axially offers on the axis hole of the internal rotor more A oil scupper with the equal length of the axis hole of internal rotor, the oil liquid between the crankshaft oil seal and internal rotor end face can pass through row Oil groove drains into outside pump cover, then is flowed into oil sump by the notch of the pump housing;
Inclined oil hole of air is also provided on the pump housing, the entrance of the inclined oil hole of air is provided on ring-shaped step, and outlet is provided with the pump housing Bottom, the oil liquid between the crankshaft oil seal and ring-shaped step can be drained into oil sump by inclined oil hole of air.
Further, it is offered on the axis hole of the internal rotor and each spline of crankshaft multiple keyways matched one by one, institute The quantity for stating oil scupper and keyway is respectively 6, and 6 oil scuppers and 6 keyways distribute alternately.
Still further, the oil scupper is semicircle or rectangular gap slot, the depth of the oil scupper and keyway Deep equality, the width of the oil extraction channel opening are the 1/3 of keyway opening width.
Further, the inclined oil hole of air includes the first inclined oil hole of air and the second inclined oil hole of air that inclination opens up, and described first tiltedly The entrance of oilhole is provided with the corner of ring-shaped step, and the outlet of first inclined oil hole of air is connected to the entrance of the second inclined oil hole of air, The outlet of second inclined oil hole of air is provided with the bottom of the pump housing.
Preferably, the cross section of first inclined oil hole of air and the second inclined oil hole of air is ellipse.
Impeller pump provided by the invention convenient for remaining oil liquid to be discharged into oil sump, the edge of pump housing mounting surface is equipped with Frame, opens up jagged on the frame of pump housing lower part, and after pump cover is installed on the mounting surface of the pump housing, the surface of pump cover is lower than pump The frame of body axially offers multiple oil scuppers with the equal length of the axis hole of internal rotor on the axis hole of internal rotor, these rows Oil groove can be very good smoothly to drain into the oil liquid between crankshaft oil seal and internal rotor end face outside pump cover, and then pass through the pump housing Notch is discharged into oil sump, to greatly reduce the surge that oil liquid herein forms crankshaft oil seal, is reduced to crankshaft oil The adverse effect of envelope;In addition, impeller pump involved by the present invention, inclined oil hole of air is offered on the pump housing, which can be by crankshaft oil Oil liquid between envelope and ring-shaped step is discharged into oil sump, and the oil liquid on ring-shaped step can obtain constantly with the operating of impeller pump Update, so it is possible to prevente effectively from outmoded oil liquid and impurity corrode crankshaft oil seal, compared to traditional impeller pump, in the present invention Impeller pump can make the service life of crankshaft oil seal will be longer.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of traditional impeller pump;
Fig. 2 is the cross-sectional view in Fig. 1 along the direction A-A;
Fig. 3 is the structural schematic diagram of the impeller pump in the present invention;
Fig. 4 is the cross-sectional view in Fig. 3 along the direction A-A;
Fig. 5 is the structural schematic diagram of the internal rotor in the present invention.
Appended drawing reference are as follows:
1 --- pump housing 1a --- notch 1b --- inclined oil hole of air
2 --- pump cover 3 --- internal rotor 3a --- oil scuppers
3b --- keyway 4 --- crankshaft 5 --- crankshaft oil seal
6 --- ring-shaped step.
Specific embodiment
For the ease of the understanding of those skilled in the art, the present invention is made further below with reference to embodiment and attached drawing Bright, the content that embodiment refers to not is limitation of the invention.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is orientation based on the figure or position Relationship is set, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning are necessary It with specific orientation, is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In the description of the present invention, it should be noted that unless otherwise specified and limited, term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, the connection being also possible to inside two elements can , can also indirectly connected through an intermediary, for the ordinary skill in the art to be to be connected directly, it can basis Concrete condition understands the concrete meaning of the term.
Carefully state present embodiment convenient for before remaining oil liquid is discharged into the impeller pump of oil sump, it should be noted that On the cylinder body of engine, oil sump is located at the bottom of the impeller pump pump housing, and the oil liquid in impeller pump can be returned from the bottom of the pump housing It flows in oil sump.
As shown in Figures 3 and 4, a kind of impeller pump convenient for remaining oil liquid to be discharged into oil sump, one kind are convenient for remaining oil liquid It is discharged into the impeller pump of oil sump, including the pump housing 1, pump cover 2, internal rotor 3, outer rotor, crankshaft 4 and crankshaft oil seal 5;
As traditional impeller pump, impeller pump its pump cover 2 in present embodiment is mounted on the mounting surface of the pump housing 1, pump cover 2 Rotor chamber is equipped between the pump housing 1, internal rotor 3 and outer rotor are intermeshed and are mounted in rotor chamber, and driving internal rotor 3 rotates Crankshaft 4 extend vertically through pump cover 2, internal rotor 3 and the pump housing 1, the circle of axis hole one on the lateral surface of the pump housing 1 around the pump housing 1 offers Ring-shaped step 6, crankshaft oil seal 5 are mounted in ring-shaped step 6, outside the axis hole for preventing the oil liquid in rotor chamber from passing through the pump housing 1 It releases and;
Different with traditional impeller pump to be, the edge of 1 mounting surface of the pump housing is equipped with frame, the frame positioned at 1 lower part of the pump housing On offer a notch 1a, after pump cover 2 is mounted on the mounting surface of the pump housing 1, the surface of pump cover 2 is lower than the frame of the pump housing 1, interior turn Axially offer the oil scupper 3a of the equal length of multiple axis holes with internal rotor 3 on the axis hole of son 3, crankshaft oil seal 5 with interior turn Oil liquid between sub 3 end faces can drain into internal rotor 3 close to pump close to the side of crankshaft oil seal 5 from internal rotor 3 by oil scupper 3a The side of lid 2, then drained into outside pump cover 2 by the axis hole of pump cover 2,1 bottom of the pump housing is mounted on finally by the notch 1a inflow of the pump housing 1 In the oil sump in portion;By being improved to above structure in impeller pump, can be very good crankshaft oil seal 5 and 3 end of internal rotor Oil liquid between face is smoothly discharged into oil sump, to greatly reduce the surge that the oil liquid forms crankshaft oil seal 5, is dropped The low adverse effect to crankshaft oil seal 5;
It is different with traditional impeller pump in addition, being also provided with inclined oil hole of air 1b on the pump housing 1, the entrance of inclined oil hole of air 1b is provided with ring On shape step 6, outlet is provided with the bottom of the pump housing 1, and oil liquid and impurity between crankshaft oil seal 5 and ring-shaped step 6 can be by oblique Oilhole 1b is drained into oil sump;By improving to above structure in impeller pump, the oil liquid on ring-shaped step 6 will be with turning The operating of son pump is constantly updated, and so it is possible to prevente effectively from outmoded oil liquid and impurity corrode crankshaft oil seal 5, reduces crankshaft The problem of 5 service life of oil sealing.
Usually, the output end of crankshaft 4 is equipped with multiple splines, to enable crankshaft 4 that internal rotor 3 to be driven to rotate, interior turn It should be offered and each spline of crankshaft 4 multiple keyway 3b matched one by one, the number of oil scupper 3a and keyway 3b on the axis hole of son 3 Amount is respectively 6, and 6 oil scupper 3a and 6 keyway 3b distribute alternately, by such structure distribution, crankshaft oil seal 5 and internal rotor Oil liquid between 3 end faces can more sufficiently, be more evenly discharged into oil sump.
There are many shapes of oil scupper 3a, and most conventional shape is selected in present embodiment, i.e. oil scupper 3a is semicircle Or rectangular gap slot, the depth of oil scupper 3a and the deep equality of keyway 3b, the width of oil scupper 3a opening are that keyway 3b is opened The 1/3 of mouth width degree.
As shown in Figure 4, the bottom of ring-shaped step 6 and the pump housing 1 is mutually separated with a distance, and crankshaft oil seal 5 and ring-shaped step 6 Between oil liquid be concentrated mainly on the corner of ring-shaped step 6, to oil liquid herein is smooth, quick excretion to the pump housing 1 In the oil sump of bottom, as shown in figure 4, inclined oil hole of air 1b can be including tilting the first inclined oil hole of air and the second inclined oil hole of air that open up, The entrance of first inclined oil hole of air is provided with the corner of ring-shaped step 6, and the outlet of the first inclined oil hole of air connects with the entrance of the second inclined oil hole of air Logical, the outlet of the second inclined oil hole of air is provided with the bottom of the pump housing 1.When work, oil liquid between crankshaft oil seal 5 and ring-shaped step 6 and The entrance that impurity first passes through the first inclined oil hole of air enters in the first inclined oil hole of air, passes sequentially through the first inclined oil hole of air and the second inclined oil hole of air Afterwards, it is discharged, is flowed into oil sump from the outlet of the second inclined oil hole of air.
In the case where 1 wall thickness of the pump housing is certain, more improve the excretion of oil liquid and impurity, can make the first inclined oil hole of air and The shape of second inclined oil hole of air is designed as ellipse, compares circular inclined oil hole of air, the sectional area of the inclined oil hole of air of such ellipse will more Greatly, the oil liquid that single can pass through will be more.
Above-described embodiment is the preferable implementation of the present invention, and in addition to this, the present invention can be realized with other way, Do not depart from the technical program design under the premise of it is any obviously replace it is within the scope of the present invention.
In order to allow those of ordinary skill in the art more easily to understand the improvements of the present invention compared with the existing technology, this Some attached drawings of invention and description have been simplified, and for the sake of clarity, present specification is omitted some other members Element, the element that those of ordinary skill in the art should be aware that these are omitted also may make up the contents of the present invention.

Claims (5)

1. a kind of impeller pump convenient for remaining oil liquid to be discharged into oil sump, including the pump housing (1), pump cover (2), internal rotor (3) and outer Rotor offers the ring-shaped step (6) of installation crankshaft oil seal (5) on the lateral surface of the pump housing (1), it is characterised in that:
The edge of the pump housing (1) mounting surface is equipped with frame, is located on the frame of the pump housing (1) lower part and offers a notch (1a), after the pump cover (2) is installed on the mounting surface of the pump housing (1), the surface of pump cover (2) is lower than the frame of the pump housing (1), described interior Multiple oil scuppers (3a) with the equal length of the axis hole of internal rotor (3), the crankshaft are axially offered on the axis hole of rotor (3) Oil liquid between oil sealing (5) and internal rotor (3) end face can drain into pump cover (2) by oil scupper (3a) outside, then pass through the pump housing (1) Notch (1a) flows into oil sump;
It being also provided with inclined oil hole of air (1b) on the pump housing (1), the entrance of the inclined oil hole of air (1b) is provided on ring-shaped step (6), Outlet is provided with the bottom of the pump housing (1), and the oil liquid between the crankshaft oil seal (5) and ring-shaped step (6) can pass through inclined oil hole of air (1b) is drained into oil sump.
2. the impeller pump according to claim 1 convenient for remaining oil liquid to be discharged into oil sump, it is characterised in that: turn in described It is offered on the axis hole of sub (3) and each spline of crankshaft (4) multiple keyways (3b) matched one by one, the oil scupper (3a) and key The quantity of slot (3b) is respectively 6, and 6 oil scuppers (3a) and 6 keyways (3b) distribute alternately.
3. the impeller pump according to claim 2 convenient for remaining oil liquid to be discharged into oil sump, it is characterised in that: the oil extraction Slot (3a) is semicircle or rectangular gap slot, the depth of the oil scupper (3a) and the deep equality of keyway (3b), the row The width of oil groove (3a) opening is the 1/3 of keyway (3b) opening width.
4. the impeller pump according to claim 3 convenient for remaining oil liquid to be discharged into oil sump, it is characterised in that: the oblique oil Hole (1b) includes the first inclined oil hole of air and the second inclined oil hole of air that inclination opens up, and the entrance of first inclined oil hole of air is provided with ring-shaped step (6) outlet of corner, first inclined oil hole of air is connected to the entrance of the second inclined oil hole of air, and the outlet of second inclined oil hole of air is opened It is located at the bottom of the pump housing (1).
5. the impeller pump according to claim 4 convenient for remaining oil liquid to be discharged into oil sump, it is characterised in that: described first The cross section of inclined oil hole of air and the second inclined oil hole of air is ellipse.
CN201910274451.7A 2019-04-08 2019-04-08 A kind of impeller pump convenient for remaining oil liquid to be discharged into oil sump Pending CN109931489A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910274451.7A CN109931489A (en) 2019-04-08 2019-04-08 A kind of impeller pump convenient for remaining oil liquid to be discharged into oil sump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910274451.7A CN109931489A (en) 2019-04-08 2019-04-08 A kind of impeller pump convenient for remaining oil liquid to be discharged into oil sump

Publications (1)

Publication Number Publication Date
CN109931489A true CN109931489A (en) 2019-06-25

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1150972A (en) * 1997-08-05 1999-02-23 Honda Motor Co Ltd Oil pump structure
JP2004084594A (en) * 2002-08-28 2004-03-18 Kayaba Ind Co Ltd Vane pump
CN101319671A (en) * 2008-07-10 2008-12-10 陈杰余 Engine oil pump with pressure-limiting valve
CN201448232U (en) * 2009-06-18 2010-05-05 唐建康 Oil pump with built-in pump cover
CN203363617U (en) * 2013-07-19 2013-12-25 东风汽车公司 Oil pump
CN203362507U (en) * 2013-07-12 2013-12-25 杭州萧山东方液压件有限公司 Novel cycloid rotor pump
CN105240674A (en) * 2015-11-04 2016-01-13 湖南机油泵股份有限公司 Novel exterior rotor type oil pump
CN106051442A (en) * 2016-08-17 2016-10-26 湖南机油泵股份有限公司 Speed changer oil pump not prone to oil leakage
CN207813916U (en) * 2017-12-06 2018-09-04 莱芜市鼎益粉末制品有限公司 A kind of oil pump
CN209688489U (en) * 2019-04-08 2019-11-26 湖南机油泵股份有限公司 A kind of impeller pump convenient for remaining oil liquid to be discharged into oil sump

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1150972A (en) * 1997-08-05 1999-02-23 Honda Motor Co Ltd Oil pump structure
JP2004084594A (en) * 2002-08-28 2004-03-18 Kayaba Ind Co Ltd Vane pump
CN101319671A (en) * 2008-07-10 2008-12-10 陈杰余 Engine oil pump with pressure-limiting valve
CN201448232U (en) * 2009-06-18 2010-05-05 唐建康 Oil pump with built-in pump cover
CN203362507U (en) * 2013-07-12 2013-12-25 杭州萧山东方液压件有限公司 Novel cycloid rotor pump
CN203363617U (en) * 2013-07-19 2013-12-25 东风汽车公司 Oil pump
CN105240674A (en) * 2015-11-04 2016-01-13 湖南机油泵股份有限公司 Novel exterior rotor type oil pump
CN106051442A (en) * 2016-08-17 2016-10-26 湖南机油泵股份有限公司 Speed changer oil pump not prone to oil leakage
CN207813916U (en) * 2017-12-06 2018-09-04 莱芜市鼎益粉末制品有限公司 A kind of oil pump
CN209688489U (en) * 2019-04-08 2019-11-26 湖南机油泵股份有限公司 A kind of impeller pump convenient for remaining oil liquid to be discharged into oil sump

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