CN208719808U - A kind of rotor-type oil pump that can improve cavitation erosion - Google Patents

A kind of rotor-type oil pump that can improve cavitation erosion Download PDF

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Publication number
CN208719808U
CN208719808U CN201821321598.4U CN201821321598U CN208719808U CN 208719808 U CN208719808 U CN 208719808U CN 201821321598 U CN201821321598 U CN 201821321598U CN 208719808 U CN208719808 U CN 208719808U
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China
Prior art keywords
rotor
pump
cavitation erosion
armature spindle
type oil
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Active
Application number
CN201821321598.4U
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Chinese (zh)
Inventor
许仲秋
刘铁飞
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Hunan Oil Pump Co Ltd
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Hunan Oil Pump Co Ltd
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Priority to CN201821321598.4U priority Critical patent/CN208719808U/en
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Abstract

The utility model provides a kind of rotor-type oil pump that can improve cavitation erosion, including the pump housing, pump cover, armature spindle, internal rotor and outer rotor, the internal rotor is fixed on armature spindle, one end of the armature spindle is mounted in the axis hole of the pump housing, the other end is mounted in the axis hole of pump cover, and the circumferential surface of the outer rotor is equipped with multiple radial through-holes.In above-mentioned technical proposal, since the circumferential surface of outer rotor is equipped with multiple radial through-holes, in this way when rotor operates, it not only can be from the end face oil inlet of inner and outer rotors, it can also be from oil inlet in the middle part of oilhole, enable oil liquid in time full of operating mesh regional, so that the promotion volumetric efficiency of medium high speed area, improves cavitation erosion.

Description

A kind of rotor-type oil pump that can improve cavitation erosion
Technical field
The utility model relates to a kind of engine lubrication system component, in particular to a kind 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..Internal rotor is fixedly mounted on It on armature spindle, is 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 rotates 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 Convex portion number is one more, the nonsynchronous rotation in the same direction of such inner and outer Rotator, and the outline shape curve of rotor is trochoid.Rotor tooth When shape tooth Profile Design must make rotor go to any angle, can mutually coordinate point contact on the tooth form profile of each tooth of inner and outer Rotator. 4 working chambers are formed in this way between inner and outer Rotator, with the rotation of rotor, the volume of this 4 working chambers is continually changing.? The side cavity of oil input channel, since rotor is disengaged, volume is gradually increased, and generates vacuum, and machine oil is inhaled into, and rotor continues to revolve Turning, machine oil is brought to the side of oil road, and at this moment, rotor just enters engagement, reduces this cavity volume, and oil pressure increases, Machine oil is squeezed out between cog and is gone out through oil road force feed.In this way, with the continuous rotation of rotor, machine oil be just constantly inhaled into and It 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 uniform Property is good, at low cost, is widely used on medium and small engine.The disadvantage is that tooth is compared in the resistance to sliding of inner and outer rotors mating surface Wheel pump is big, therefore power consumption is larger.
It is end face oil inlet from inner and outer rotors that the structure of this rotor-type oil pump, which determines, when rotor thickness is too thick, Mesohigh region, rotor thickness and revolving speed reason will lead to it is oil-filled discontented, it is excessive so as to cause gassiness, decline volumetric efficiency Serious and generation cavitation erosion part of damage.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of rotor-type oil pumps that can improve cavitation erosion.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution: a kind of rotor that can improve cavitation erosion Formula lubricating oil pump, including the pump housing, pump cover, armature spindle, internal rotor and outer rotor, the internal rotor are fixed on armature spindle, and described turn One end of sub- axis is mounted in the axis hole of the pump housing, and the other end is mounted in the axis hole of pump cover, and the circumferential surface of the outer rotor is equipped with more A radial through-hole.
Preferably, the through-hole is correspondingly arranged at the concave tooth of outer rotor.
Preferably, the quantity of the through-hole is identical as the concave tooth quantity of the outer rotor.
The beneficial effects of the utility model are: in above-mentioned technical proposal, since the circumferential surface of outer rotor is equipped with multiple radial Through-hole not only can also make oil from oil inlet in the middle part of oilhole from the end face oil inlet of inner and outer rotors in this way when rotor operates Liquid can be in time full of operating mesh regional, so that the promotion volumetric efficiency of medium high speed area, improves cavitation erosion.
Detailed description of the invention
Fig. 1 is the rotor-type oil pump configuration schematic diagram in the utility model embodiment;
Fig. 2 is the outer-rotor structure schematic diagram in the utility model embodiment;
Appended drawing reference are as follows:
1 --- the pump housing 2 --- pump cover 3 --- armature spindle
4 --- internal rotor 5 --- outer rotor 6 --- through-holes.
Specific embodiment
For the ease of the understanding of those skilled in the art, the utility model is made below with reference to embodiment and attached drawing further Explanation, the content that embodiment refers to not is restriction to the utility model.
In the description of the present invention, it should be understood that term " first ", " second " are used for description purposes only, and It cannot be understood as indicating or implying relative importance or implicitly indicate the quantity of indicated technical characteristic.In the utility model Description in, the meaning of " plurality " is two or more, unless otherwise specifically defined.In retouching for the utility model In stating, it should be noted that unless otherwise specified and limited, term " installation ", " connected ", " connection " shall be understood in a broad sense, example Such as, mechanical connection or electrical connection be can be, the connection being also possible to inside two elements can be directly connected, and can also lead to It crosses intermediary to be indirectly connected, for the ordinary skill in the art, can understand the term as the case may be Concrete meaning.
As shown in Figure 1, the preferred embodiment of the utility model is: a kind of rotor-type oil pump that can improve cavitation erosion, including The pump housing 1, pump cover 2, armature spindle 3, internal rotor 4 and outer rotor 5, the internal rotor 4 are fixed on armature spindle 3, the armature spindle 3 One end is mounted in the axis hole of the pump housing 1, and the other end is mounted in the axis hole of pump cover 2, and the circumferential surface of outer rotor 5 is equipped with multiple radial Through-hole 6, the through-hole 6 are correspondingly arranged at the concave tooth of outer rotor 5, and identical as the concave tooth quantity of outer rotor 5.
Above-described embodiment is the preferable implementation of the utility model, and in addition to this, the utility model can be with other sides Formula realizes that any obvious replacement is in the protection model of the utility model under the premise of not departing from the technical program design Within enclosing.
In order to allow those of ordinary skill in the art more easily understand the improvement of the utility model compared with the existing technology it Place, some attached drawings of the utility model and description have been simplified, and for the sake of clarity, present specification is omitted one A little other elements, the element that those of ordinary skill in the art should be aware that these are omitted also may make up the interior of the utility model Hold.

Claims (3)

1. it is a kind of can improve cavitation erosion rotor-type oil pump, including the pump housing (1), pump cover (2), armature spindle (3), internal rotor (4) and Outer rotor (5), the internal rotor are fixed on armature spindle (3), and one end of the armature spindle (3) is mounted on the axis hole of the pump housing (1) In, the other end is mounted in the axis hole of pump cover (2), it is characterised in that: the circumferential surface of the outer rotor (5) is equipped with multiple radial lead to Hole (6).
2. the rotor-type oil pump according to claim 1 that cavitation erosion can be improved, it is characterised in that: the through-hole (6) is corresponding It is arranged at the concave tooth of outer rotor (5).
3. the rotor-type oil pump according to claim 1 or 2 that cavitation erosion can be improved, it is characterised in that: the through-hole (6) Quantity is identical as the concave tooth quantity of the outer rotor (5).
CN201821321598.4U 2018-08-16 2018-08-16 A kind of rotor-type oil pump that can improve cavitation erosion Active CN208719808U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821321598.4U CN208719808U (en) 2018-08-16 2018-08-16 A kind of rotor-type oil pump that can improve cavitation erosion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821321598.4U CN208719808U (en) 2018-08-16 2018-08-16 A kind of rotor-type oil pump that can improve cavitation erosion

Publications (1)

Publication Number Publication Date
CN208719808U true CN208719808U (en) 2019-04-09

Family

ID=65978034

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821321598.4U Active CN208719808U (en) 2018-08-16 2018-08-16 A kind of rotor-type oil pump that can improve cavitation erosion

Country Status (1)

Country Link
CN (1) CN208719808U (en)

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