CN108953139A - A kind of outer rotor can be reduced abrasion - Google Patents

A kind of outer rotor can be reduced abrasion Download PDF

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Publication number
CN108953139A
CN108953139A CN201811127893.0A CN201811127893A CN108953139A CN 108953139 A CN108953139 A CN 108953139A CN 201811127893 A CN201811127893 A CN 201811127893A CN 108953139 A CN108953139 A CN 108953139A
Authority
CN
China
Prior art keywords
rotor
peripheral surface
outer peripheral
outer rotor
oil
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.)
Pending
Application number
CN201811127893.0A
Other languages
Chinese (zh)
Inventor
许仲秋
刘铁飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
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 CN201811127893.0A priority Critical patent/CN108953139A/en
Publication of CN108953139A publication Critical patent/CN108953139A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/08Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00Pressure lubrication
    • F01M1/02Pressure lubrication using lubricating pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/08Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084Toothed wheels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00Pressure lubrication
    • F01M1/02Pressure lubrication using lubricating pumps
    • F01M2001/0207Pressure lubrication using lubricating pumps characterised by the type of pump
    • F01M2001/0238Rotary pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00Fluid
    • F04C2210/14Lubricant

Abstract

The present invention provides a kind of outer rotors that can be reduced abrasion, it is used for rotor-type oil pump, and the generally annular, including inner peripheral surface and outer peripheral surface of outer rotor, wherein inner peripheral surface is equipped with several concave tooth, and outer peripheral surface is evenly distributed with multiple axial grooves.Since the outer peripheral surface of outer rotor is evenly distributed with multiple axial grooves, the outer peripheral surface of outer rotor and the contact area of pump housing rotor chamber side wall are not only reduced in this way, and the contact area of the end face and pump housing rotor chamber bottom surface and pump cover of extra rotor is also reduced, it thus can be reduced friction;Secondly, oil liquid can be taken to oil outlet from oil inlet end by groove of the outer rotor on rotation process, outer peripheral surface, supplement high speed oil suction is insufficient, promotes High-speed volume efficiency, improves cavitation erosion;Again, multiple axial grooves, which are arranged, in the outer peripheral surface of outer rotor can mitigate weight, save the cost.

Description

A kind of outer rotor can be reduced abrasion
Technical field
The present invention relates to a kind of engine lubrication system component, in particular to a kind of outer rotor of rotor-type oil pump.
Background technique
Rotor-type oil pump is made of the pump housing, internal rotor, outer rotor, armature spindle and pump cover etc..The pump housing is equipped with rotor chamber, Internal rotor and outer rotor are located in rotor chamber, and internal rotor is fixedly mounted on armature spindle, are directly or indirectly driven by crankshaft toothed wheel, The eccentricity at internal rotor and outer rotor center is e, and internal rotor drives outer rotor to rotate in the same direction together.
The internal rotor of general rotor-type oil pump has 4 or 4 or more double wedges, the recessed gear ratio internal rotor of outer rotor As soon as convex portion number more, such inner and outer Rotator can be carried out nonsynchronous rotation in the same direction, the outline shape curve of rotor is time pendulum Line.
It is total on the tooth form profile of each tooth of inner and outer Rotator when rotor tooth form tooth Profile Design must make rotor go to any angle Can mutually be coordinated point contact.Multiple working chambers are formed between inner and outer Rotator in this way, with the rotation of rotor, the volume of multiple working chambers It is continually changing.In the side cavity of oil input channel, since rotor is disengaged, volume is gradually increased, and generates vacuum, machine oil quilt Sucking, rotor continue to rotate, and machine oil is brought to the side of oil road, and at this moment, rotor just enters engagement, make this cavity volume Reduce, oil pressure increases, and machine oil is squeezed out between cog and gone out through oil road force feed.In this way, machine oil is just with the continuous rotation of rotor It is constantly inhaled into and extrudes.
Rotor-type oil pump is compact-sized, and outer dimension is small, light-weight, and oil suction vacuum degree is larger, and pump oil amount is big, and fuel feeding is equal Even property is good, at low cost, is widely used on medium and small engine.The disadvantage is that the resistance to sliding ratio of inner and outer rotors mating surface Gear pump is big, therefore power consumption is larger.
In the prior art, the structure of outer rotor is generally annular, including inner peripheral surface and outer peripheral surface, wherein sets on inner peripheral surface There are several concave tooth, outer peripheral surface is circle, and at work, outer rotor rotates together under the drive of internal rotor, outside outer rotor Circumferential surface will do it with the side wall of rotor chamber and contact friction, for a long time, the two will necessarily be allowed to generate corresponding abrasion.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of outer rotors that can be reduced abrasion, and provide a kind of installation simultaneously There is the lubricating oil pump of this outer rotor.
In order to solve the above-mentioned technical problem, the technical scheme is that a kind of outer rotor that can be reduced abrasion, it is used for Rotor-type oil pump, the generally annular, including inner peripheral surface and outer peripheral surface of outer rotor, wherein it is recessed to be equipped with several for inner peripheral surface Tooth, outer peripheral surface are evenly distributed with multiple axial grooves.
Preferably, the groove on outer peripheral surface is equal with the quantity of the concave tooth on inner peripheral surface, and the position of groove and concave tooth is mutual It is staggered.
The beneficial effects of the present invention are: in above-mentioned technical proposal, since the outer peripheral surface of outer rotor is uniformly distributed multiple axial recessed Slot not only reduces the outer peripheral surface of outer rotor and the contact area of pump housing rotor chamber side wall in this way, and also reduces outer rotor End face and pump housing rotor chamber bottom surface and pump cover contact area, thus can be reduced friction;Secondly, outer rotor was rotating Oil liquid can be taken to oil outlet from oil inlet end by journey, the groove on outer peripheral surface, and supplement high speed oil suction is insufficient, promotes High-speed volume Efficiency improves cavitation erosion;Again, multiple axial grooves, which are arranged, in the outer peripheral surface of outer rotor can mitigate weight, save the cost.
Detailed description of the invention
Fig. 1 is the outer-rotor structure schematic diagram in the embodiment of the present invention;
Fig. 2 is the outer rotor schematic perspective view of Fig. 1;
Fig. 3 is the lubricating oil pump configuration schematic diagram in the embodiment of the present invention;
Fig. 4 is internal rotor and outer rotor combining structure schematic diagram in the embodiment of the present invention;
Appended drawing reference are as follows:
1 --- the pump housing 2 --- pump cover 3 --- armature spindle
4 --- internal rotor 5 --- outer rotor 51 --- concave tooth
52 --- groove.
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 " first ", " second " are used for description purposes only, and cannot It is interpreted as indication or suggestion relative importance or implicitly indicates the quantity of indicated technical characteristic.In description of the invention In, the meaning of " plurality " is two or more, unless otherwise specifically defined.In the description of the present invention, it needs Illustrate, 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 be directly connected, and can also pass through intermediary It is indirectly connected, for the ordinary skill in the art, can understand the concrete meaning of the term as the case may be.
Embodiment 1
As shown in Figure 1, 2, a kind of outer rotor can be reduced abrasion, it is used for rotor-type oil pump, outer rotor it is generally annular, Including inner peripheral surface and outer peripheral surface, wherein inner peripheral surface is equipped with several concave tooth 51, and outer peripheral surface is evenly distributed with multiple axial grooves 52;Outside Groove 52 on circumferential surface is equal with the quantity of concave tooth 51 on inner peripheral surface, and groove 52 and the position of concave tooth 51 are mutually staggered.
Embodiment 2
As shown in Figures 1 to 4, a kind of lubricating oil pump can be reduced abrasion, including the pump housing 1, pump cover 2, armature spindle 3, internal rotor 4 and outer turn Son 5, the internal rotor 4 is fixed on armature spindle 3, and one end of the armature spindle 3 is mounted in the axis hole of the pump housing 1, other end peace In the axis hole of pump cover 2;The generally annular, including inner peripheral surface and outer peripheral surface of the outer rotor 5, wherein inner peripheral surface is equipped with The outer peripheral surface of several concave tooth 51, the outer rotor 5 is evenly distributed with multiple axial grooves 52;It is recessed on 5 outer peripheral surface of outer rotor Slot 52 is equal with the quantity of concave tooth 51 on inner peripheral surface, and groove 52 and the position of concave tooth 51 are mutually staggered.
The beneficial effect of the present embodiment is: since the outer peripheral surface of outer rotor 5 is evenly distributed with multiple axial grooves 52, so not only Reduce the outer peripheral surface of outer rotor 5 and the contact area of 1 rotor chamber side wall of the pump housing, and also reduce the end face of outer rotor 5 with The contact area of 1 rotor chamber bottom surface of the pump housing and pump cover 2, thus can be reduced friction;Secondly, outer rotor 5 is in rotation process, outside Oil liquid can be taken to oil outlet from oil inlet end by the groove 52 on circumferential surface, and supplement high speed oil suction is insufficient, promotes High-speed volume effect Rate improves cavitation erosion;Again, multiple axial grooves 52, which are arranged, in the outer peripheral surface of outer rotor 5 can mitigate weight, save the cost.
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 (2)

1. a kind of outer rotor that can be reduced abrasion, it is used for rotor-type oil pump, the generally annular, including inner peripheral surface of outer rotor And outer peripheral surface, wherein inner peripheral surface is equipped with several concave tooth (51), it is characterised in that: the outer peripheral surface of the outer rotor is uniformly distributed multiple Axial groove (52).
2. the outer rotor according to claim 1 that can be reduced abrasion, it is characterised in that: groove (52) on outer peripheral surface with it is interior The quantity of concave tooth (51) on circumferential surface is equal, and groove (52) and the position of concave tooth (51) are mutually staggered.
CN201811127893.0A 2018-09-27 2018-09-27 A kind of outer rotor can be reduced abrasion Pending CN108953139A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811127893.0A CN108953139A (en) 2018-09-27 2018-09-27 A kind of outer rotor can be reduced abrasion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811127893.0A CN108953139A (en) 2018-09-27 2018-09-27 A kind of outer rotor can be reduced abrasion

Publications (1)

Publication Number Publication Date
CN108953139A true CN108953139A (en) 2018-12-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811127893.0A Pending CN108953139A (en) 2018-09-27 2018-09-27 A kind of outer rotor can be reduced abrasion

Country Status (1)

Country Link
CN (1) CN108953139A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112307596A (en) * 2020-09-28 2021-02-02 东风汽车集团有限公司 Cavitation improvement method and device for engine oil pump of engine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658583A (en) * 1984-06-11 1987-04-21 Trw Inc. Double staged, internal rotary pump with flow control
EP2161453A2 (en) * 2008-09-05 2010-03-10 PKT Präzisionskunststofftechnik Bürtlmair GmbH Rotor set and rotor pump
US20160273535A1 (en) * 2015-03-16 2016-09-22 Saudi Arabian Oil Company Equal-walled gerotor pump for wellbore applications
CN208718912U (en) * 2018-09-27 2019-04-09 湖南机油泵股份有限公司 A kind of outer rotor can be reduced abrasion

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658583A (en) * 1984-06-11 1987-04-21 Trw Inc. Double staged, internal rotary pump with flow control
EP2161453A2 (en) * 2008-09-05 2010-03-10 PKT Präzisionskunststofftechnik Bürtlmair GmbH Rotor set and rotor pump
US20160273535A1 (en) * 2015-03-16 2016-09-22 Saudi Arabian Oil Company Equal-walled gerotor pump for wellbore applications
CN208718912U (en) * 2018-09-27 2019-04-09 湖南机油泵股份有限公司 A kind of outer rotor can be reduced abrasion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112307596A (en) * 2020-09-28 2021-02-02 东风汽车集团有限公司 Cavitation improvement method and device for engine oil pump of engine
CN112307596B (en) * 2020-09-28 2023-02-28 东风汽车集团有限公司 Cavitation erosion improvement method and device for engine oil pump of engine

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