CN106194769A - A kind of quiet centrifugal pump - Google Patents
A kind of quiet centrifugal pump Download PDFInfo
- Publication number
- CN106194769A CN106194769A CN201610787321.XA CN201610787321A CN106194769A CN 106194769 A CN106194769 A CN 106194769A CN 201610787321 A CN201610787321 A CN 201610787321A CN 106194769 A CN106194769 A CN 106194769A
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- China
- Prior art keywords
- motor
- liquid
- pump
- shaft
- fluid
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/20—Mounting rotors on shafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2238—Special flow patterns
- F04D29/225—Channel wheels, e.g. one blade or one flow channel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of quiet centrifugal pump, comprising: the cold frequency conversion motor of liquid that the cold converter of the pump housing, liquid is integrated with fluid-cooled electrical machine；Pump shaft, is socketed with axle sleeve and spacer ring；Sliding bearing, is socketed in outside axle sleeve；Shaft coupling is connected with pump shaft, and fluid-cooled electrical machine drives pump shaft to rotate by shaft coupling；Impeller, is plugged on pump shaft；The mutual tandem of multiple stators coordinates, and is fastened by steel band.Due to the fact that employing fluid-cooled electrical machine and the integrated morphology of the cold converter of liquid, eliminate conventional motors cooling fan, simultaneously by motor inner shell and the dual sealing structure of motor housing, reduce the noise of motor, thus reduce the noise of centrifugal pump, and cool down stator and the bearing of motor due to liquid simultaneously, reduce the temperature of motor, improve the reliability of motor.
Description
Technical field
The present invention relates to industrial liquid conveying and urban water supply and sewerage field, particularly relate to what the cold frequency conversion motor of a kind of liquid drove
Low noise rustless steel centrifugal multistage pump multiple centrifugal pump.
Background technology
Centrifugal multistage pump multiple centrifugal pump be applied to the conveying of industrial liquid and urban water supply and sewerage, skyscraper pressurized water supply, fire fighting pressurization,
The cold-warm water such as heating, bathroom is circularly-supercharged and coordinative composition of equipments and air conditioning unit circulation, cooling water conveying etc..
The motor major part that centrifugal multistage pump multiple centrifugal pump is used at present is standard frequency industrial motor surely.Standard frequency industrial motor pair surely
In the application that noise requirements is higher, such as house, business office, hotel, hotel and hospital etc., be difficult to meet the requirement of client.
The main method reducing noise has two: one to be the oscillation power reducing noise source, and two is to hinder or cut off its route of transmission.
Reduce the pursuit that noise source oscillation power is projector all the time, but difficulty is relatively big, relatively costly.Hinder or cut
Disconnected noise transmission paths also can effectively reduce noise level, however it is necessary that bigger space, and cost is high simultaneously.On the other hand,
Fixed frequency motor is unfavorable for energy-conservation, and the currently a popular power-saving technology of liquid transportation art is to use frequency control.
The liquid cooling centrifugal multistage pump multiple centrifugal pump of the present invention, owing to using the cold frequency conversion motor of liquid, eliminates cooling in conventional motors and uses
Fan, thus eliminate a noise source, motor passes through motor inner housing and shell body dual sealing, hinders motor noise
Pipeline, reduces the noise of motor, thus reduces the noise of centrifugal pump；Meanwhile, cooled down motor by liquid simultaneously
Stator and spring bearing, the heat that motor is produced is taken away in time, reduces the temperature of motor, improves motor reliability.Separately
On the one hand, at partial load condition, the cold frequency conversion motor of liquid reduces the rotating speed of centrifugal multistage pump multiple centrifugal pump by reducing motor speed, thus drops
The power consumption of low centrifugal pump.
The quiet centrifugal pump of the present invention uses the cold converter of liquid and the cold frequency conversion motor of fluid-cooled electrical machine integrated form liquid: on the one hand solve
Determine noise problem；On the other hand motor and converter are as an Optimized System Design, at partial load condition by automatically
Regulation motor speed, reduces energy consumption of electrical machinery, reduces the operating cost of quiet centrifugal pump system.The most quiet centrifugal pump have also been devised
Powerful communication function.
Summary of the invention
It is an object of the invention to the noise for centrifugal multistage pump multiple centrifugal pump and energy consumption problem, it is provided that a kind of low noise, low energy consumption are many
The solution of level centrifugal pump.
For achieving the above object, the invention provides a kind of quiet centrifugal multistage pump multiple centrifugal pump, comprising:
The pump housing, is positioned at bottom centrifugal pump, and the described pump housing includes fluid intake and outlet；
Pump shaft, is axially contained in the described pump housing, and described pump shaft is socketed with axle sleeve and wheel space ring；
Sliding bearing, is socketed in outside described axle sleeve, slidably supports described pump shaft；
Impeller, is plugged on described pump shaft and by described wheel space annulate shaft to location, and described pump shaft drives described impeller
Rotate, thus the fluid pressurization that will enter from described pump housing suction inlet；
Stator, is arranged on outside described axle sleeve, and the liquid pressurizeed by described impeller is collected by stator described in chopped-off head and drops
Low flow velocity, enters impeller described in next stage and continues pressurization until liquid being discharged from described outlet and sending into water supply system；
The cold frequency conversion motor of liquid, it is axially mounted to described pump housing upper end, described electric machine support and the pump housing by electric machine support
Locked by turnbuckle；
Described electric machine support has support inner shell and rack shell, is formed and connect between described support inner shell and rack shell
The guiding fluid hole of described pump housing chamber and hole for back flow；
The cold frequency conversion motor of described liquid is fluid-cooled electrical machine and liquid cold converter integration-in-one structure；
The housing of described fluid-cooled electrical machine is made up of the motor inner shell comprising motor stator and motor housing, described motor inner shell
And form the liquid back pipe circulation for motor coolant of motor between electrode shell；For housing the chamber of described impeller and stator
Room has urceolus and inner core, forms the liquid back pipe connecting described hole for back flow, going out of described liquid back pipe between described urceolus and inner core
Mouth is communicated to the outlet of the described pump housing；
The cold converter of described liquid is arranged on the motor housing of described fluid-cooled electrical machine by converter pedestal, described converter
Pedestal has inlet and liquid outlet for connecting described liquid back pipe and coolant introduces the cold converter of described liquid cooling down；
Motor shaft, is axially contained in the middle of the described motor inner shell of described fluid-cooled electrical machine, described fluid-cooled electrical machine drive and turn
Dynamic；
Rolling bearing, motor shaft described in rolling support；
Shaft coupling, is used for coupling described motor shaft and pump shaft, and described fluid-cooled electrical machine passes through described motor shaft and shaft coupling band
Dynamic described pump shaft rotates；
Described pump shaft uses mechanical seal, to cut off the fluid in the described pump housing through two side positions of described electric machine support
Enter described electric machine support.
Wherein, described rolling bearing includes front end rolling bearing and rear end rolling bearing, is respectively used to described in rolling support
The front end of motor shaft and rear end, described front end rolling bearing is arranged on the top of described electric machine support, and described motor shaft passes institute
It is connected with described pump shaft in stretching into described electric machine support after stating front end rolling bearing and by described shaft coupling.
Further, the sealing plate being socketed on described motor shaft, described sealing plate it are additionally provided with in described electric machine support
By forming coolant circulation passage between sealing ring and described electric machine support for taking away described front end rolling bearing and electricity
The heat produced between machine support and motor shaft；Described sealing plate, the entering of cooling passage between sealing ring and electric machine support
Mouth is respectively communicated to the outlet of described guiding fluid hole and the entrance of hole for back flow with outlet.
Further, the cold converter of described liquid also includes coil pipe and converter cover plate, and described coil pipe is arranged on described frequency conversion
Between device pedestal and converter cover plate, described converter pedestal and converter cover plate are by trip bolt assembling fitted seal circle
Formed and close space；The liquid inlet of described coil pipe is respectively communicated with inlet and the liquid outlet of described converter pedestal with outlet,
And it is communicated to described liquid back pipe further.
Wherein, impeller described in chopped-off head is axially positioned by axis head nut, by axle sleeve axle between chopped-off head and second level impeller
To location, by described wheel space annulate shaft to location between remaining impeller at different levels.
Further, the inner ring of described impeller there is multiple projection radially fixed on multiple grooves of pump shaft outer wall.
Wherein, one end of stator described in chopped-off head is plugged on described axle sleeve, and the other end of stator described in chopped-off head is led with remaining
Location is coordinated by steel band tandem between leaf.
Further, between described axle sleeve and stator, logical interference fit is assembled together, described sliding bearing and axle sleeve it
Between be matched in clearance.
The quiet centrifugal multistage pump multiple centrifugal pump of the present invention uses the cold frequency conversion motor of liquid, eliminates conventional motors cooling fan, eliminates
One noise source, motor passes through motor inner shell and the dual sealing of motor housing simultaneously, hinders the propagation of noise, reduces
The noise of motor, thus reduce the noise of centrifugal pump；On the other hand, in the work process of centrifugal multistage pump multiple centrifugal pump, pass through liquid
Circulation cools down converter, the stator of fluid-cooled electrical machine and spring bearing simultaneously, the heat that cold to fluid-cooled electrical machine and liquid converter is produced
Take away in time, reduce the bulk temperature of the cold frequency conversion motor of liquid, improve the reliability of the cold frequency conversion motor of liquid.Fluid-cooled electrical machine and liquid
Cold converter is as an Optimized System Design, at partial load condition by self-regulation motor rotating speed, reduces fluid-cooled electrical machine
Energy consumption, reduces the operating cost of quiet centrifugal pump system.
The powerful communication function of the quiet Centrifugal Pump Design of the present invention, including using wireless blue tooth technology, it is achieved is moving
Controlled start and stop and the rotating speed control of the cold frequency conversion motor of liquid by application program operation on dynamic equipment, such as mobile phone；(logical by GPRS
By packet wireless service technology) transmit a signal to centralized-control center, it is achieved wireless remote monitering；By industrial bus agreement
(such as RS485, Modbus) realizes networking and realizes local operation by configuring the touch screen operation panel of friendly user's interface.
Accompanying drawing explanation
Fig. 1 is the one quiet centrifugal pump structure schematic diagram of the present invention；
Fig. 2 is liquid of the present invention cold frequency changer schematic diagram；
Fig. 3 is the converter base construction schematic diagram of the cold converter of liquid of the present invention；
Fig. 4 is the converter covering plate structure schematic diagram of the cold converter of liquid of the present invention.
In figure, numeral represents:
1. steel band 2. impeller 3. sliding bearing
4. axle sleeve 5. stator 6. turnbuckle
7. mechanical seal 8. guiding fluid hole 9. front end rolling bearing
10. motor housing 11. fluid-cooled electrical machine 12. rear end rolling bearing
13. pump housing 14. urceolus 15. liquid back pipes
16. wheel space ring 17. pump shaft 18. hole for back flow
19. shaft coupling 20. electric machine support 21. sealing rings
22. sealing plate 23. motor inner shell 24. motor liquid back pipes
25. liquid cold converter 251. inlet 252. converter pedestals
253. coil pipe 254. converter cover plate 255. liquid outlets
256. sealing ring 257. trip bolts
Detailed description of the invention
Below by drawings and Examples, technical scheme is described in further detail.
As a example by two-stage, Fig. 1 is the schematic diagram of the quiet centrifugal pump of the present invention, and the quiet centrifugal pump of the present invention specifically includes:
Steel band 1, impeller 2, sliding bearing 3, axle sleeve 4, stator 5, turnbuckle 6, mechanical seal 7, guiding fluid hole 8, front end rolling bearing 9,
Motor housing 10, fluid-cooled electrical machine 11, rear end rolling bearing 12, the pump housing 13, urceolus 14, liquid back pipe 15, wheel space ring 16, pump shaft
17, hole for back flow 18, shaft coupling 19, electric machine support 20, sealing ring 21, sealing plate 22, motor inner shell 23, motor liquid back pipe 24 and liquid
Cold converter 25.Fig. 2 is liquid cold frequency changer schematic diagram, and Fig. 3 is the converter base construction schematic diagram of the cold converter of liquid, figure
4 is the converter covering plate structure schematic diagram of the cold converter of liquid, and the cold converter of liquid 25 mainly includes inlet 251, converter pedestal
252, coil pipe 253, converter cover plate 254, liquid outlet 255, sealing ring 256 and trip bolt 257.
Pump shaft 17 is contained in impeller 2 and stator 5, and impeller 2 is plugged on pump shaft 17, and pump shaft 17 is socketed with axle sleeve 4 and leaf
Wheel spacer ring 16.Sliding bearing 3 is socketed in inside axle sleeve 4 for slidably supporting pump shaft 17, between sliding bearing 3 and axle sleeve 4 is
Matched in clearance.Axle sleeve 4 uses interference fit on stator 5.Rolling bearing 5 rolling support pump shaft 3.The processing essence of axle sleeve 4
Spending higher, the processing request of wheel space ring 16 is relatively much lower, and its major function is axially determining between impeller 2
Position.
Pump shaft 17 uses sliding bearing 3 to support by axle sleeve 4.The motor shaft of fluid-cooled electrical machine 11 passes through front end rolling bearing 9
Supporting with rear end rolling bearing 12, front end rolling bearing 9 is typically the angular contact deep-groove ball axle of axial load bearing capacity
Holding, and rear end rolling bearing 12 uses common deep groove ball bearing, rear end rolling bearing 12 also can use angular contact deep-groove ball sometimes
Bearing.Pump shaft 17 is connected with motor shaft by shaft coupling 19, and outside fluid-cooled electrical machine 11 drives pump shaft 17 by shaft coupling 19
Rotating, the cold converter of liquid 25 is then assemblied on the housing of fluid-cooled electrical machine 11 by securing member by converter pedestal 252.Pump shaft 17 carries
Movable vane wheel 2 rotation, thus the fluid pressurization that will suck from the pump housing 13, the mutual tandem of stator 5 coordinates, is fastened on one by steel band 1
Rise, collect and reduce flow velocity by the fluid under pressure of impeller 2 by stator 5, and discharged by the pump housing 13 outlet.
First stage impeller 2 is axially positioned by axis head nut, axially fixed by axle sleeve 4 between the first order and second level impeller
Position, is axially positioned by wheel space ring 16 between remaining each impeller 2.Have on impeller 2 inner ring multiple projection radially fixed
On multiple grooves of pump shaft 17.
The effect of stator 5 is that the liquid that impeller 2 is thrown away collects, and makes the flow velocity of liquid reduce, partial velocity
After being changed into pressure energy, then it is uniformly introduced next stage or discharges feeding fluid pipe network system through the pump housing 13 outlet.
Stator 5 makes liquid flow in continuous print runner, is not easily formed dead angle and diffusion suddenly, and fluid velocity change ratio is more uniform, water
Power is functional.
One end of part stator 5 is plugged on axle sleeve 4, and the other end coordinates location by the tandem between stator 5, such as first
Level stator 5.And logical interference fit is assembled together between axle sleeve 4 and stator 5, join for gap between sliding bearing 3 and axle sleeve 4
Close.
According to different impeller diameters and different progression, can be that centrifugal multistage pump multiple centrifugal pump configures multiple sliding bearings 3, by adjusting
The quantity optimization of whole sliding bearing 3, it is ensured that centrifugal multistage pump multiple centrifugal pump safe and stable operation.
Guiding fluid hole 8 and hole for back flow 18 has been opened, as the circulation canal of coolant on electric machine support 20.In order to realize preferably
Cooling effect, increases the film-cooled heat of the cold converter of liquid 25, and the cooling of the cold converter of liquid 25 uses coil arrangement.Liquid is from centrifugal
Pump high pressure chest first passes through inlet 251 by 8 liquid of the guiding fluid hole on electric machine support 20 and introduces the cold converter of liquid 25, then
The heat that liquid is produced by 253 cold converters of liquid 25 of coil pipe is taken away in time, it is ensured that the cold converter of liquid 25 is all the time at one relatively
Low temperature.The cold converter of liquid 25 is formed closing space by converter pedestal 252 and converter cover plate 254 by sealing ring 256,
Converter pedestal 252 and converter cover plate 254 are assembled by trip bolt 257.The circulating liquid warp of the cold converter of coolant 25
Cross in the cavity that liquid outlet 255 enters motor inner shell 23 and motor housing 10 closing.Cooling liquid returning by fluid-cooled electrical machine 11
The liquid pipe 24 hole for back flow 18 on electric machine support 20 is connected with multistage pump low pressure chamber by liquid back pipe 15 and constitutes blood circulation.Cooling
The liquid of fluid-cooled electrical machine 11 is separated with extraneous by sealing ring 21 by sealing plate 22.In centrifugal multistage pump multiple centrifugal pump work process, circulation
Liquid take away timely the cold converter of liquid 25 and fluid-cooled electrical machine 11 stator produce heat and spring bearing in the course of the work
The heat that mechanical friction produces, allows the cold converter of liquid, fluid-cooled electrical machine 11 and spring bearing temperature be maintained at an apparent wind all the time
Temperature relatively low for cool electric machine, improves motor reliability.At partial load condition, the cold frequency conversion motor of liquid is cold by reducing liquid
The rotating speed of motor 11 and reduce the rotating speed of multistage pump, thus reduce the power consumption of fluid-cooled electrical machine 11, reduce the merit of quiet centrifugal pump
Consumption, reduces the operating cost of quiet centrifugal pump system.
The pump shaft 17 of the quiet centrifugal pump of the present invention is directly driven by fluid-cooled electrical machine 11 by shaft coupling 19.Pump shaft 17 drives
2 liquid pumpings of impeller are to the lift specified.Quiet centrifugal pump sucks liquid quiet through the pump housing 13 suction inlet by impeller 2
Centrifugal pump, liquid, after impeller 2 pressurizes, enters subordinate's impeller 2 through stator 5 and continues pressurization, then by subordinate's stator 5
Enter the pressurization of next stage impeller, until being discharged by the stator 5 of final stage after being terminated by impeller 2 pressure process of final stage.Finally
Quiet centrifugal pump sends into pipeline system the liquid of high pressure runner between stator 5 and urceolus 14 from the outlet of the pump housing 13
System.
The quiet centrifugal pump of the present invention uses fluid-cooled electrical machine 11 and liquid cold converter 25 integration-in-one structure, eliminates biography
Cooling fan on system motor, eliminates a noise source, and fluid-cooled electrical machine 11 is by motor inner shell 23 and and motor housing simultaneously
The dual sealing of 10, hinders the propagation of noise, reduces the noise that fluid-cooled electrical machine 11 runs, thus reduces making an uproar of centrifugal pump
Sound.
The powerful communication function of the quiet Centrifugal Pump Design of the present invention, including using wireless blue tooth technology, it is achieved is moving
Controlled start and stop and the rotating speed control of the cold frequency conversion motor of liquid by application program operation on dynamic equipment, such as mobile phone；(logical by GPRS
By packet wireless service technology) transmit a signal to centralized-control center, it is achieved wireless remote monitering；By industrial bus agreement
(such as RS485, Modbus) realizes networking and realizes local operation by configuring the touch screen operation panel of friendly user's interface.
Above-described detailed description of the invention, has been carried out the purpose of the present invention, technical scheme and beneficial effect further
Describe in detail, be it should be understood that the detailed description of the invention that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, all should comprise
Within protection scope of the present invention.
Claims (8)
1. a quiet centrifugal pump, it is characterised in that including:
The pump housing, is positioned at bottom centrifugal pump, and the described pump housing includes fluid intake and outlet；
Pump shaft, is axially contained in the described pump housing, and described pump shaft is socketed with axle sleeve and wheel space ring；
Sliding bearing, is socketed in outside described axle sleeve, slidably supports described pump shaft；
Impeller, is plugged on described pump shaft and by described wheel space annulate shaft to location, and described pump shaft drives described wheel rotation,
Thus the fluid pressurization that will enter from described pump housing suction inlet；
Stator, is arranged on outside described axle sleeve, and the liquid pressurizeed by described impeller is collected by stator described in chopped-off head and reduces stream
Speed, enters impeller described in next stage and continues pressurization until liquid being discharged from described outlet and sending into water supply system；
The cold frequency conversion motor of liquid, it is axially mounted to described pump housing upper end by electric machine support, and described electric machine support passes through with the pump housing
Turnbuckle is locked；
Described electric machine support has support inner shell and rack shell, is formed described in connecting between described support inner shell and rack shell
The guiding fluid hole of pump housing chamber and hole for back flow；
The cold frequency conversion motor of described liquid is fluid-cooled electrical machine and liquid cold converter integration-in-one structure；
The housing of described fluid-cooled electrical machine is made up of the motor inner shell comprising motor stator and motor housing, described motor inner shell and electricity
The liquid back pipe circulation for motor coolant of motor is formed between the shell of pole；Have for housing the chamber of described impeller and stator
Having urceolus and inner core, form the liquid back pipe connecting described hole for back flow between described urceolus and inner core, the outlet of described liquid back pipe is even
Pass to the outlet of the described pump housing；
The cold converter of described liquid is arranged on the motor housing of described fluid-cooled electrical machine by converter pedestal, described converter pedestal
There is inlet and liquid outlet for connecting described liquid back pipe and coolant is introduced the cold converter of described liquid cooling down；
Motor shaft, is axially contained in the middle of the described motor inner shell of described fluid-cooled electrical machine, described fluid-cooled electrical machine drive and rotate；
Rolling bearing, motor shaft described in rolling support；
Shaft coupling, is used for coupling described motor shaft and pump shaft, and described fluid-cooled electrical machine drives institute by described motor shaft and shaft coupling
State pump shaft to rotate；
Described pump shaft uses mechanical seal through two side positions of described electric machine support, to cut off the fluid entrance in the described pump housing
Described electric machine support.
The quiet centrifugal pump of one the most according to claim 1, it is characterised in that described rolling bearing includes the front end axis of rolling
Holding and rear end rolling bearing, be respectively used to front end and the rear end of motor shaft described in rolling support, described front end rolling bearing is arranged
On the top of described electric machine support, described motor shaft is through in stretching into described electric machine support after the rolling bearing of described front end and pass through
Described shaft coupling is connected with described pump shaft.
The quiet centrifugal pump of one the most according to claim 2, it is characterised in that be additionally provided with socket in described electric machine support
Sealing plate on described motor shaft, described sealing plate is logical by forming coolant circulation between sealing ring and described electric machine support
Road is for taking away the heat produced between described front end rolling bearing and electric machine support and motor shaft；Described sealing plate, sealing
The entrance of the cooling passage between circle and electric machine support and outlet are respectively communicated to the outlet of described guiding fluid hole and hole for back flow
Entrance.
The quiet centrifugal pump of one the most according to claim 1, it is characterised in that the cold converter of described liquid also include coil pipe and
Converter cover plate, described coil pipe is arranged between described converter pedestal and converter cover plate, described converter pedestal and frequency conversion
Device cover plate is formed by trip bolt assembling fitted seal circle and closes space；The liquid inlet of described coil pipe connects respectively with outlet
The inlet of logical described converter pedestal and liquid outlet, and it is communicated to described liquid back pipe further.
The quiet centrifugal pump of one the most according to claim 1, it is characterised in that impeller described in chopped-off head passes through axis head nut axle
To location, axially positioned by axle sleeve between chopped-off head and second level impeller, by described wheel space between remaining impeller at different levels
Annulate shaft is to location.
The quiet centrifugal pump of one the most according to claim 5, it is characterised in that have multiple projection on the inner ring of described impeller
Radially fixed on multiple grooves of pump shaft outer wall.
The quiet centrifugal pump of one the most according to claim 6, it is characterised in that one end of stator described in chopped-off head is plugged on institute
State on axle sleeve, between the other end of stator described in chopped-off head with remaining stator, coordinate location by steel band tandem.
The quiet centrifugal pump of one the most according to claim 7, it is characterised in that pass through to be full of between described axle sleeve and stator to join
Conjunction is assembled together, and is matched in clearance between described sliding bearing and axle sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610787321.XA CN106194769A (en) | 2016-08-31 | 2016-08-31 | A kind of quiet centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610787321.XA CN106194769A (en) | 2016-08-31 | 2016-08-31 | A kind of quiet centrifugal pump |
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| Publication Number | Publication Date |
|---|---|
| CN106194769A true CN106194769A (en) | 2016-12-07 |
Family
ID=58085290
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610787321.XA Pending CN106194769A (en) | 2016-08-31 | 2016-08-31 | A kind of quiet centrifugal pump |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605741A (en) * | 2017-09-05 | 2018-01-19 | 王冬冬 | A kind of multistage discharge capacity is adjustable from cooling water pump |
| CN109026750A (en) * | 2018-09-11 | 2018-12-18 | 上海上涵自动化科技有限公司 | A kind of mute energy-saving water pump |
| CN113700655A (en) * | 2020-05-21 | 2021-11-26 | 上海凯士比泵有限公司 | Inside and outside self-loopa's cooling system of converter and motor integrated device |
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| CN102450115A (en) * | 2009-06-09 | 2012-05-09 | 厄利孔莱博尔德真空技术有限责任公司 | Vacuum pump |
| CN105626548A (en) * | 2016-01-21 | 2016-06-01 | 池泉 | Intelligent pipeline pump |
| CN105673574A (en) * | 2016-03-18 | 2016-06-15 | 池泉 | Low-noise multi-stage centrifugal pump |
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Application publication date: 20161207 |