CN206060431U - Oil-submersible pump - Google Patents
Oil-submersible pump Download PDFInfo
- Publication number
- CN206060431U CN206060431U CN201621107919.1U CN201621107919U CN206060431U CN 206060431 U CN206060431 U CN 206060431U CN 201621107919 U CN201621107919 U CN 201621107919U CN 206060431 U CN206060431 U CN 206060431U
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- Prior art keywords
- oil
- electric machine
- machine casing
- group part
- immersed
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- 238000000605 extraction Methods 0.000 claims description 35
- 239000012530 fluid Substances 0.000 claims description 27
- 238000004891 communication Methods 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000930 thermomechanical effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000001095 motoneuron effect Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Rotary Pumps (AREA)
Abstract
The utility model provides an oil-submersible pump, including motor element and pump assembly, the motor element drive the pump assembly operation, wherein, still include motor casing, motor element installs in the motor casing, the last oil inlet that is equipped with of motor casing, the oil inlet warp motor casing's inner space with the oil absorption mouth of pump assembly communicates with each other, the oil inlet is for following the slot hole that the circumference of motor casing extends. The utility model discloses an oil-submersible pump can solve its motor element's heat dissipation problem, improvement motor efficiency well, promotes oil-submersible pump operational reliability and life.
Description
Technical field
This utility model is related to fluid pump technical field, and in particular to a kind of oil-immersed pump.
Background technology
Oil-immersed pump operationally needs submergence in a fluid, and the heat dissipation problem of its electric machine assembly is still very important.Existing skill
In art, it is generally recognized that the radiating by means of housing disclosure satisfy that requirement, however, due to housing relative closure, and general employing is led
Hot poor material is made, therefore can not discharge the heat that electric machine assembly is produced in time well, is thus likely to result in
Motor overheating, causes potential safety hazard, or affects electric efficiency.
In this regard, a kind of oil-immersed pump is disclosed in patent documentation CN105952657A, which is provided with 4 edges on electric machine casing
Axially extending elongated hole, for use as oil-in so that fluid first passes through oil-in in electric machine casing, and then reaches pump group part
Inlet port at, thus come by fluid only to radiate motor.Compared to the housing of closing, the oil-immersed pump significantly improves electricity
The radiating efficiency of machine.However, as inlet port is arranged on the side wall of electric machine casing and is axially extended, fluid enters motor
After housing during the inlet port of pump group part is flowed to, the area flowed through by fluid is little, and two Jing adjacent oil-ins are entered
Fluid flow path between can there is obvious dead band, cause heat retention, be particularly difficult to flow through motor stator with electricity
Gap between machine rotor, so as to be difficult to take away the heat produced by rotor in time.
Therefore, design highly efficient, feasible radiating mode for oil-immersed pump, for lifted oil-immersed pump product quality and make
It is significant with the life-span.
Utility model content
Based on above-mentioned present situation, main purpose of the present utility model is to provide a kind of oil-immersed pump, and which can effectively by electricity
The heat that thermomechanical components are produced is discharged, so as to ensure the long-time reliability service of oil-immersed pump.
Above-mentioned purpose is achieved through the following technical solutions：
A kind of oil-immersed pump, including electric machine assembly and pump group part, the electric machine assembly drive the pump group part operating, wherein,
Also include electric machine casing, the electric machine assembly is arranged in the electric machine casing, and the electric machine casing is provided with oil-in, described
Described in oil-in Jing, the inner space of electric machine casing is communicated with the inlet port of the pump group part, and the oil-in is along the motor
The circumferentially extending elongated hole of housing.
Preferably, the oil-in is arranged on the side wall of the electric machine casing.
Preferably, the oil-in includes multiple, is separately positioned at the axial two ends near the sidewall of motor housing.
Preferably, 4 oil-ins are being respectively provided with the axial two ends of the sidewall of motor housing.
Preferably, the oil-immersed pump has oil return opening, and the oil return opening is connected with the inlet port of the pump group part.
Preferably, also including valve assembly, the valve assembly is arranged on the oil-out of the oil-immersed pump and described
Between oil return opening.
Preferably, also including oil extraction housing, the oil extraction housing is sealingly coupled together with the electric machine casing, described
Pump group part is arranged in the oil extraction housing, and the oil return opening is arranged on the oil extraction housing.
Preferably, the oil return opening is arranged on the side wall of the oil extraction housing at the position corresponding to the pump group part.
Preferably, the inner space of communication to the electric machine casing of the oil return opening by extending obliquely out.
Preferably, also including screen modules, the screen modules are arranged at the oil-in.
Preferably, the screen modules are arranged on the outside of the electric machine casing, and cover the oil-in.
Preferably, the screen modules have columnar structured, and there are bottom, another end opening in one end.
Preferably, the pump group part is cycloid inside engaged gear pump group part, including intermeshing internal rotor and outer rotor.
Oil-immersed pump of the present utility model operationally, into electric machine casing fluid reach pump group part during, energy
It is enough that electric machine assembly is flow through with larger area, it might even be possible to which that the gesture of parcel is formed to electric machine assembly, it is more so as to take away in time
Heat, therefore, it is possible to solving the heat dissipation problem of its electric machine assembly well, improving electric efficiency, lifts the reliable of oil-immersed pump
Property and service life.
Description of the drawings
Hereinafter with reference to accompanying drawing to being described according to oil-immersed pump of the present utility model.In figure：
Fig. 1 schematically illustrates the general assembly drawing of the oil-immersed pump of preferred implementation of the present utility model.
Fig. 2 schematically illustrates the bleed off circuit of the oil-immersed pump of preferred implementation of the present utility model.
Fig. 3 schematically illustrates the preferred structure of the electric machine casing of preferred implementation in oil-immersed pump of the present utility model.
Wherein, 1- oil-outs, 2- inlet ports, 3- oil extraction cover plates, 4- internal rotors, 5- oil drain outs, 6- outer rotors, 7- oil extractions envelope
Plate, 8- oil extraction housings, 9- oil return openings, 10- is advancing slip dynamic bearing, 11- electric machine casings, 12- electric machine assemblies, 13- oil-ins, 14- mistakes
Net-filter assembly, sliding bearing after 15-, 16- electric machine casing shroudings, 17- motor stators, 18- rotors, 19- motor shafts, 20-
Valve assembly.
Specific embodiment
As described in Figure 1, this utility model provides a kind of oil-immersed pump, and which includes electric machine assembly 12 and pump group part, the electricity
Thermomechanical components 12 drive the pump group part operating, to produce pump action.
Typically, electric machine assembly 12 includes motor stator 17, rotor 18, and supporting motor rotor 18 with motor
The motor shaft 19 that rotor 18 rotates together.In figure, motor shaft 19 is supported by means of advancing slip dynamic bearing 10 and rear sliding bearing 15, its
Front end is stretched in pump group part, to drive pump group part to operate.
Typically, pump group part has inlet port 2 and oil drain out 5, in the operation process of pump group part, fluid Jing inlet ports 2
Into in pump group part, and Jing oil drain outs 5 are discharged after being pressurizeed by pump group part.
Especially, oil-immersed pump of the present utility model includes electric machine casing 11, and the electric machine assembly 12 is arranged on the motor
In housing 11, the electric machine casing 11 is provided with oil-in 13, the inner space of electric machine casing 11 described in 13 Jing of the oil-in
Communicate with the inlet port 2 of the pump group part, the oil-in 13 is the circumferentially extending elongated hole along the electric machine casing 11.
When oil-immersed pump of the present utility model operates, pump group part works with the rotation of rotor 18, by electric machine casing 11
In the outside suction electric machine casing 11 of fluid Jing oil-ins 13, and then in the suction pump group part of Jing inlet ports 2.In fluid from oil-in
During 13 reach inlet ports 2, the surface everywhere of electric machine assembly 12 can be flowed through, between motor stator 17 and electric machine casing 11
Space between space and motor stator 17 and rotor 18, so as to the heat produced by electric machine assembly 12 is taken away simultaneously
Outside is discharged to pumped fluid.
Especially, as oil-in 13 is arranged to along the circumferentially extending of electric machine casing 11, therefore, what Jing oil-ins 13 were entered
Fluid can flow through electric machine assembly 12 with larger area, or even can be to the gesture of the formation parcel of electric machine assembly 12, so as to quickly take away
More heats, strengthen radiating effect.
It can be seen that, oil-immersed pump of the present utility model can solve the heat dissipation problem of its electric machine assembly well, improve motor effect
Rate, lifts the operational reliability and service life of oil-immersed pump.
Preferably, as shown in figure 3, the oil-in 13 is arranged on the side wall of the electric machine casing 11.Due to group of motors
The profile of part 12 is generally generally cylindrical, thus, the profile of electric machine casing 11 is also generally cylindrical, and which for example includes cylinder
Shape side wall, oil-in 13 are preferably provided on the cylinder side wall.
As shown in figure 1, for ease of installing electric machine assembly 12, the rear end of electric machine casing is hatch frame, electric machine casing shrouding
16 are arranged at the hatch frame.Preferably, rear sliding bearing 15 is supported by the electric machine casing shrouding 16 or fixed.Oil-in
13 can also alternatively be arranged on electric machine casing shrouding 16.
Preferably, the oil-in 13 includes multiple, is separately positioned on axially two near the electric machine casing 11 side wall
At end, as shown in Figure 3.By arranging multiple scattered oil-ins 13, the fluid of flowing can be made more preferable in electric machine casing 11
Flow through electric machine assembly 12 everywhere, so as to further improve radiating effect.Especially, lean on due to there are some fuel feed holes to be arranged on
The rear end of nearly 11 side wall of electric machine casing, the fluid entered through these fuel feed holes during pump group part is flowed to, Neng Gou
Flow through in gap between rotor and motor stator, so as to take away the heat of rotor in time, radiating efficiency compared to
Prior art is significantly improved.
Preferably, 4 oil-ins 13 are being respectively provided with the axial two ends of the electric machine casing 11 side wall, i.e. altogether 8
Individual oil-in.This 8 oil-ins 13 are for example uniformly distributed at the axial two ends of 11 side wall of electric machine casing.For example, lean on
Nearly each oil-in 13 per end can be evenly arranged in the circumferential, and in the axial direction, positioned at two ends
Oil-in 13 can also be arranged to normal incidence one by one, or dislocation ground arrangement.
Preferably, oil-immersed pump of the present utility model also has oil return opening 9, the oil suction of the oil return opening 9 and the pump group part
Mouth 2 is connected.As inlet port 2 is communicated with the inner space of electric machine casing 11, therefore, oil return opening 9 similarly with electric machine casing 11
Inner space communicate.
The effect of oil return opening 9 is, if the pressure reduction at the oil-out of oil-immersed pump 1 is larger, can be by oil-out 1 and oil return
9 connection of mouth forms bleed off circuit, a part of fluid Jing oil return openings 9 is directly returned at the inlet port 2 of pump group part, fuel-displaced to reduce
Pressure reduction at mouth 1.And if motor adopts frequency conversion motor, then bleed off circuit can not be used, oil return opening 9 is directly blocked i.e.
Can.
For example, oil return opening 9 is can be arranged directly on the side wall of electric machine casing 11, so as to directly with electric machine casing 11 in
Portion space communicates.
Preferably, as shown in Fig. 2 oil-immersed pump of the present utility model can also include valve assembly 20, the regulating valve
Component 20 is arranged between the oil-out 1 and the oil return opening 9 of the oil-immersed pump.By the action of valve assembly 20, can be with
The connection or disconnection between oil-out 1 and oil return opening 9 is easily controlled, or adjusts uninterrupted therebetween.
Preferably, as shown in figure 1, oil-immersed pump of the present utility model also includes oil extraction housing 8, the oil extraction housing 8 and institute
State electric machine casing 11 to be sealingly coupled together, for example, be fixed Jing after the docking of respective flange.Wherein, the pump group part
In the oil extraction housing 8, the oil return opening 9 is arranged on the oil extraction housing 8.Oil return opening 9 is arranged on oil extraction housing 8
On, on the one hand can simplify assembling process, for example, when the connection between electric machine casing 11 and oil extraction housing 8 is taken apart, not affect
Bypass connection between oil return opening 9 and oil-out 1；On the other hand, also so that oil return needs not move through filter assemblies 14, so as to simplification
The setting of filter assemblies 14.Filter assemblies 14 will be described in detail hereinafter.
Preferably, the oil return opening 9 is arranged on the side wall of the oil extraction housing 8 position corresponding to the pump group part
Place.As shown in figure 1, due to the diameter with diameter greater than pump group part of oil extraction cover plate 3, thus the inner chamber of oil extraction housing 8 is arranged to rank
Scalariform, wherein, pump group part be located position at inner chamber diameter it is less, oil extraction cover plate 3 be located position at inner chamber diameter compared with
Greatly.And the external diameter of oil extraction housing 8 is basically unchanged (in addition to flange), therefore, at the position that pump group part is located, oil extraction housing 8
Wall thickness is significantly greater, therefore, it is suitable for arranging oil return opening 9 and corresponding path.
Preferably, the inner space of communication to the electric machine casing 11 of the oil return opening 9 by extending obliquely out.Such as
Shown in Fig. 1, with the end face towards 11 side of electric machine casing, the path that this extends obliquely out is through this towards motor for oil extraction housing 8
The end face of 11 side of housing, you can be communicated to the inner space of electric machine casing 11, so as to keep connecting with inlet port 2.Therefore, originally
In utility model, the direction extension referred to along from the side of cylindrical structural to end face is extended obliquely out.
In addition, from figure 1 it appears that two holes are additionally provided with the end face towards 11 side of electric machine casing, being respectively
The support holes of inlet port 2 and advancing slip dynamic bearing 10.
Preferably, oil-immersed pump of the present utility model also includes screen modules 14, and the screen modules 14 are arranged on institute
State at oil-in 13.Need to filter where it is possible to affecting latent through the filtration of filter assemblies 14 into the fluid in electric machine casing
The impurity that oil pump normally runs, to protect the core parts of oil-immersed pump, such as pump group part.Screen modules 14 can have various
Version, and can have various set-up modes, for example, can be installed in oil-in 13, in electric machine casing 11
Side, etc., as long as can guarantee that fluid into electric machine casing 11 through screen modules 14.
Preferably, the screen modules 14 can be arranged on the outside of the electric machine casing 11, and cover the oil-feed
Mouth 13.Obviously, the screen modules 14 for being arranged on outside have the advantages that easy for installation, maintenance is easy.
Preferably, as shown in figure 1, the screen modules 14 have columnar structured, there is a bottom one end, another end opening,
And outward flange is set at opening preferably.That is, with the shape similar to medicated cap, which is complete for the preferred structure of screen modules 14
Cover on the outside of electric machine casing 11, and the outward flange by means of opening be fixed, for example with the flange of electric machine casing 11 and
The flange of oil extraction housing 8 is fixed together.The screen modules 14 of this structure are particularly conducive to install, open and inspect, clean
Work.
Preferably, the pump group part is cycloid inside engaged gear pump group part, including intermeshing internal rotor 4 and outer rotor
6。
Internal gear teeth wheel pump only has two movement parts, and its internal rotor (i.e. internal gear) passed through on main shaft drives outer rotor
(i.e. external gear) rotating in same direction, causes negative pressure in entrance when two gears are separated from each other and sucks fluid, and two gears are in outlet
The mutually embedded engagement in place, fluid compression is exported, the spatial volume change circulation primary that two gears are meshed formed, and is just realized
Suction fluid and discharge fluid are each once.
Cycloid crescent gear pump, its compared with involute external gear rotary pump, with compact conformation, light weight, size
Little the advantages of.And due to gear rotating Vortex, relative sliding velocity is little, abrasion is slight, and long service life, flow pulsation are little,
Thus pressure fluctuation and noise are all less.Meanwhile, fluid is easily full of inter-tooth slots under the influence of centrifugal force, therefore allows to revolve at a high speed
Turn, volumetric efficiency is higher.
Therefore, for oil-immersed pump, cycloid inside engaged gear pump group part can reduce volume, ensure service life, reduces
Noise.
Preferably, the number of teeth of the internal rotor 4 is 6, and the number of teeth of the outer rotor 6 is 7.The center of internal rotor 4 is around outer
The central rotation of rotor 6, has certain offset.Gap uniformity between inner and outer Rotator.The flank profil of outer rotor 6 is internal rotor 4
The envelope of one group of tooth curve of molded line.Internal rotor 4 and outer rotor 6 are preferably made using powder metallurgy.
Preferably, the inlet port 2 and oil drain out 5 of the pump group part is respectively positioned at the axial both sides of the pump group part.It is this
Setting can further make the compact conformation of oil-immersed pump.As shown in figure 1, inlet port 2 is arranged on oil extraction housing 8 towards electric machine casing 11
On the end face of side, pump group part is secured in place by oil extraction cover plate 3, and oil drain out 5 is arranged on oil extraction cover plate 3, before oil extraction housing 8
End is closed by oil extraction shrouding 7, and the oil-out 1 of oil-immersed pump is arranged on oil extraction shrouding 7, between oil extraction shrouding 7 and oil extraction cover plate 3
Constitute oil-discharging cavity.
To sum up, operationally, fluid first passes around screen modules to the oil-immersed pump of preferred implementation of the present utility model
14, the impurity for being possible to affect oil-immersed pump normally to run is filtered out, the multiple oil-ins 13 with after on Jing electric machine casings 11 are entered
Inside oil pump, a part of heat produced when electric machine assembly 12 runs is taken away, the inlet port of pump group part is then entered along runner
2；When internal rotor 4 and outer rotor 6 are separated from each other, negative pressure are caused at inlet port 2 and suck fluid, turn when internal rotor 4 and outward
When son 6 is mutually embedded in engagement at the oil drain out 5, by fluid compression output to oil-out 1.When the pressure reduction of oil-out 1 is larger, can
Bleed off circuit between oil-out 1 and oil return opening 9 is opened.
Those skilled in the art is it is easily understood that on the premise of not conflicting, above-mentioned each preferred version can be free
Ground combination, superposition.
It should be appreciated that above-mentioned embodiment is only illustrative, and not restrictive, without departing from of the present utility model
In the case of ultimate principle, those skilled in the art can be directed to the modification of the various obvious or equivalent that above-mentioned details is made
Or replace, all it is included in right of the present utility model.
Claims (13)
1. a kind of oil-immersed pump, including electric machine assembly and pump group part, the electric machine assembly drive the pump group part operating, its feature to exist
In, also including electric machine casing, the electric machine assembly is arranged in the electric machine casing, and the electric machine casing is provided with oil-in,
Described in the oil-in Jing, the inner space of electric machine casing is communicated with the inlet port of the pump group part, and the oil-in is along described
The circumferentially extending elongated hole of electric machine casing.
2. oil-immersed pump according to claim 1, it is characterised in that the oil-in is arranged on the side wall of the electric machine casing
On.
3. oil-immersed pump according to claim 2, it is characterised in that the oil-in includes multiple, is separately positioned on close
At the axial two ends of the sidewall of motor housing.
4. oil-immersed pump according to claim 3, it is characterised in that at the axial two ends of the sidewall of motor housing
It is respectively provided with 4 oil-ins.
5. the oil-immersed pump according to one of claim 1-4, it is characterised in that the oil-immersed pump has an oil return opening, described time
Hydraulic fluid port is connected with the inlet port of the pump group part.
6. oil-immersed pump according to claim 5, it is characterised in that also including valve assembly, the valve assembly peace
It is mounted between the oil-out of the oil-immersed pump and the oil return opening.
7. oil-immersed pump according to claim 5, it is characterised in that also including oil extraction housing, the oil extraction housing with it is described
Electric machine casing is sealingly coupled together, and the pump group part is arranged in the oil extraction housing, and the oil return opening is arranged on described
On oil extraction housing.
8. oil-immersed pump according to claim 7, it is characterised in that the oil return opening is arranged on the side wall of the oil extraction housing
On at position corresponding to the pump group part.
9. oil-immersed pump according to claim 8, it is characterised in that the oil return opening by the communication that extends obliquely out extremely
The inner space of the electric machine casing.
10. the oil-immersed pump according to one of claim 1-4, it is characterised in that also including screen modules, the drainage screen
Component is arranged at the oil-in.
11. oil-immersed pumps according to claim 10, it is characterised in that the screen modules are arranged on the electric machine casing
Outside, and cover the oil-in.
12. oil-immersed pumps according to claim 11, it is characterised in that the screen modules have it is columnar structured, one
There are bottom, another end opening in end.
13. oil-immersed pumps according to one of claim 1-4, it is characterised in that the pump group part is cycloid inside engaged gear
Pump group part, including intermeshing internal rotor and outer rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621107919.1U CN206060431U (en) | 2016-10-08 | 2016-10-08 | Oil-submersible pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621107919.1U CN206060431U (en) | 2016-10-08 | 2016-10-08 | Oil-submersible pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206060431U true CN206060431U (en) | 2017-03-29 |
Family
ID=58363655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621107919.1U Active CN206060431U (en) | 2016-10-08 | 2016-10-08 | Oil-submersible pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206060431U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106357040A (en) * | 2016-10-08 | 2017-01-25 | 珠海格力电器股份有限公司 | Oil-submersible pump |
| CN108347136A (en) * | 2018-05-03 | 2018-07-31 | 包头天工电机有限公司 | Oil cooling wheel hub permanent magnet synchronous motor |
-
2016
- 2016-10-08 CN CN201621107919.1U patent/CN206060431U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106357040A (en) * | 2016-10-08 | 2017-01-25 | 珠海格力电器股份有限公司 | Oil-submersible pump |
| CN106357040B (en) * | 2016-10-08 | 2018-11-13 | 珠海格力电器股份有限公司 | Oil-submersible pump |
| CN108347136A (en) * | 2018-05-03 | 2018-07-31 | 包头天工电机有限公司 | Oil cooling wheel hub permanent magnet synchronous motor |
| CN108347136B (en) * | 2018-05-03 | 2024-01-30 | 包头天工电机有限公司 | Oil-cooled hub permanent magnet synchronous motor |
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