CN206017178U - A kind of quiet centrifugal pump - Google Patents
A kind of quiet centrifugal pump Download PDFInfo
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- CN206017178U CN206017178U CN201621010982.3U CN201621010982U CN206017178U CN 206017178 U CN206017178 U CN 206017178U CN 201621010982 U CN201621010982 U CN 201621010982U CN 206017178 U CN206017178 U CN 206017178U
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Abstract
The utility model discloses a kind of quiet centrifugal pump, which includes：The cold variable-frequency motor of the integrated liquid of the cold frequency converter of the pump housing, liquid and fluid-cooled electrical machine；Pump shaft, is socketed with axle sleeve and spacer ring；Sliding bearing, is socketed on the outside of 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.The utility model is due to the integrated morphology using fluid-cooled electrical machine and the cold frequency converter of liquid, eliminate conventional motors cooling fan, simultaneously by motor inner casing and the dual sealing structure of motor housing, reduce the noise of motor, so as to reduce the noise of centrifugal pump, and as liquid cools down the stator and bearing of motor simultaneously, reduce the temperature of motor, improve the reliability of motor.
Description
Technical field
The utility model is related to industrial liquid conveying and urban water supply and sewerage field, more particularly to a kind of cold variable-frequency motor of liquid drives
Dynamic low noise stainless 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 waters such as heating, bathroom are circularly-supercharged and coordinative composition of equipments and air-conditioner set circulation, cooling water conveying etc..
The at present motor major part adopted by centrifugal multistage pump multiple centrifugal pump determines frequency industrial motor for standard.Standard determines frequency industrial motor pair
In the higher application of noise requirements, such as house, business office, hotel, hotel and hospital etc., it is difficult to meet the requirement of client.
The main method for reducing noise has two：One is the oscillation power for 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 larger, relatively costly.Hinder or cut
Disconnected noise transmission paths can also effectively reduce noise level, however it is necessary that larger space, while high cost.On the other hand,
Determine frequency motor and be unfavorable for energy-conservation, the currently a popular power-saving technology of liquid transportation art is to adopt frequency control.
Liquid cooling centrifugal multistage pump multiple centrifugal pump of the present utility model is due to using the cold variable-frequency motor of liquid, eliminating cold in conventional motors
But fan is used, and so as to eliminate a noise source, motor is hindered motor and made an uproar by motor inner housing and shell body dual sealing
The pipeline of sound, reduces the noise of motor, so as to reduce the noise of centrifugal pump；Meanwhile, electricity is cooled down simultaneously by liquid
The stator and spring bearing of machine, takes away the heat that motor is produced in time, reduces the temperature of motor, improve motor reliability
Property.On the other hand, in partial load condition, the cold variable-frequency motor of liquid reduces the rotating speed of centrifugal multistage pump multiple centrifugal pump by reducing motor speed,
So as to reduce the power consumption of centrifugal pump.
Quiet centrifugal pump of the present utility model is using the cold frequency converter of liquid and the cold variable-frequency motor of fluid-cooled electrical machine integrated form liquid：One side
Face solves noise problem；Another aspect motor and frequency converter pass through in partial load condition as an Optimized System Design
Self-regulation motor rotating speed, reduces energy consumption of electrical machinery, reduces the operating cost of quiet centrifugal pump system.Quiet centrifugal pump also sets simultaneously
Powerful communication function is counted.
Utility model content
The purpose of this utility model is the noise and energy consumption problem for centrifugal multistage pump multiple centrifugal pump, there is provided a kind of low noise, low energy
The solution of consumption centrifugal multistage pump multiple centrifugal pump.
For achieving the above object, the utility model provides a kind of quiet centrifugal multistage pump multiple centrifugal pump, and which includes：
The pump housing, positioned at centrifugal pump bottom, the pump housing includes fluid intake and outlet；
Pump shaft, is axially contained in the pump housing, is socketed with axle sleeve and wheel space ring on the pump shaft；
Sliding bearing, is socketed on the outside of the axle sleeve, slidably supports the pump shaft；
Impeller, is plugged on the pump shaft and by the wheel space ring axially position, and the pump shaft drives the impeller
Rotate, so as to the fluid pressurization that will be entered from the pump housing suction inlet；
Stator, on the outside of the axle sleeve, the liquid stator described in chopped-off head pressurizeed by the impeller is collected and is dropped
Low flow velocity, enters impeller described in next stage and continues pressurization until liquid being discharged from the outlet and sending into water supply system；
The cold variable-frequency motor of liquid, its pass through electric machine support and are axially mounted to the pump housing upper end, the electric machine support and the pump housing
Locked by turnbuckle；
The electric machine support has support inner casing and rack shell, is formed and connect between the support inner casing and rack shell
The guiding fluid hole and hole for back flow of the pump housing chamber；
The cold variable-frequency motor of the liquid is fluid-cooled electrical machine and the cold frequency converter integration-in-one structure of liquid；
The housing of the fluid-cooled electrical machine is made up of motor inner casing and motor housing comprising motor stator, the motor inner casing
The liquid back pipe for forming motor between electrode shell is used for the circulation of motor coolant；For housing the chamber of the impeller and stator
Room has outer tube and inner core, formed and connect the liquid back pipe of the hole for back flow between the outer tube and inner core, and the liquid back pipe goes out
Mouth is communicated to the outlet of the pump housing；
The cold frequency converter of the liquid by frequency converter pedestal on the motor housing of the fluid-cooled electrical machine, the frequency converter
There is pedestal inlet to be used for connecting the liquid back pipe and coolant being introduced the cold frequency converter of the liquid being cooled down with liquid outlet；
Motor shaft, is axially contained in the middle of the motor inner casing of the fluid-cooled electrical machine, is driven by the fluid-cooled electrical machine and is turned
Dynamic；
Rolling bearing, motor shaft described in rolling support；
Shaft coupling, for coupling the motor shaft and pump shaft, the fluid-cooled electrical machine is by the motor shaft and shaft coupling band
The dynamic pump shaft is rotated；
The pump shaft adopts mechanical seal through two side positions of the electric machine support, to separate the fluid in the pump housing
Enter the electric machine support.
Wherein, the rolling bearing includes front end rolling bearing and rear end rolling bearing, is respectively used to described in rolling support
The front end and rear end of motor shaft, the front end rolling bearing are arranged on the top of the electric machine support, and the motor shaft passes through institute
Stretch into after stating front end rolling bearing in the electric machine support and be connected with the pump shaft by the shaft coupling.
Further, the sealing plate being socketed on the motor shaft, the sealing plate are additionally provided with the electric machine support
By forming coolant circulation passage between sealing ring and the electric machine support for taking away the front end rolling bearing and electricity
The heat produced between machine support and motor shaft；The sealing plate, cooling passage between sealing ring and electric machine support enter
Mouth is respectively communicated to the outlet of the guiding fluid hole and the entrance of hole for back flow with outlet.
Further, the cold frequency converter of the liquid also includes that coil pipe and frequency converter cover plate, the coil pipe are arranged on the frequency conversion
Between device pedestal and frequency converter cover plate, the frequency converter pedestal is with frequency converter cover plate by trip bolt assembling fitted seal circle
Form closing space；The liquid inlet of the coil pipe is respectively communicated with the inlet and liquid outlet of the frequency converter pedestal with outlet,
And further it is communicated to the liquid back pipe.
Wherein, impeller described in chopped-off head passes through axle sleeve axle by axis head nut axially position between chopped-off head and second level impeller
To positioning, by the wheel space ring axially position between remaining impeller at different levels.
Further, there are multiple projections radially fixed on multiple grooves of pump shaft outer wall on the inner ring of the impeller.
Wherein, one end of stator described in chopped-off head is plugged on the axle sleeve, and the other end of stator described in chopped-off head is led with remaining
Positioning is coordinated by steel band tandem between leaf.
Further, lead to interference fit to be assembled together between the axle sleeve and stator, the sliding bearing and axle sleeve it
Between for gap coordinate.
Quiet centrifugal multistage pump multiple centrifugal pump of the present utility model eliminates conventional motors cooling fan using the cold variable-frequency motor of liquid,
A noise source is eliminated, while motor hinders the propagation of noise by motor inner casing and the dual sealing of motor housing, is dropped
The low noise of motor, so that reduce the noise of centrifugal pump；On the other hand, in the course of work of centrifugal multistage pump multiple centrifugal pump, pass through
Liquid circulation cools down frequency converter, the stator of fluid-cooled electrical machine and spring bearing simultaneously, and fluid-cooled electrical machine and the cold frequency converter of liquid are produced
Heat is taken away in time, reduces the bulk temperature of the cold variable-frequency motor of liquid, improves the reliability of the cold variable-frequency motor of liquid.Fluid-cooled electrical machine
With the cold frequency converter of liquid as an Optimized System Design, in partial load condition by self-regulation motor rotating speed, reduce liquid cold
Energy consumption of electrical machinery, reduces the operating cost of quiet centrifugal pump system.
The powerful communication function of quiet Centrifugal Pump Design of the present utility model, including using wireless blue tooth technology, realizing
By the start and stop and rotating speed control of the cold variable-frequency motor of application program operational control liquid on mobile device, such as mobile phone；Pass through
GPRS (general packet radio service technology) transmits a signal to centralized-control center, realizes wireless remote monitering；By industrial total
Wire protocol (such as RS485, Modbus) is realized networking and is just realized by configuring the touch screen operation panel of friendly user's interface
Ground operation.
Description of the drawings
Fig. 1 is a kind of quiet centrifugal pump structure schematic diagram of the present utility model；
Fig. 2 is the cold frequency changer schematic diagram of the utility model liquid；
Frequency converter base construction schematic diagrams of the Fig. 3 for the cold frequency converter of the utility model liquid；
Frequency converter covering plate structure schematic diagrames of the Fig. 4 for the cold frequency converter of the utility model liquid.
In figure, numeral is represented：
1. 2. impeller of steel band, 3. sliding bearing
4. 5. stator of axle sleeve, 6. turnbuckle
7. 8. guiding fluid hole of mechanical seal, 9. front end rolling bearing
10. 11. fluid-cooled electrical machine of motor housing, 12. rear end rolling bearing
13. pump housing, 14. outer tube, 15. liquid back pipe
16. wheel space ring, 17. pump shaft, 18. hole for back flow
19. shaft coupling, 20. electric machine support, 21. sealing ring
22. sealing plate, 23. motor inner casing, 24. motor liquid back pipe
Cold 251. inlet of frequency converter, the 252. frequency converter pedestal of 25. liquid
253. coil pipe, 254. frequency converter cover plate, 255. liquid outlet
256. sealing ring, 257. trip bolt
Specific embodiment
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
By taking two-stage as an example, schematic diagrames of the Fig. 1 for the quiet centrifugal pump of the utility model, quiet centrifugal pump tool of the present utility model
Body 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 are rolled
Bearing 9, motor housing 10, fluid-cooled electrical machine 11, rear end rolling bearing 12, the pump housing 13, outer tube 14, liquid back pipe 15, wheel space ring
16th, pump shaft 17, hole for back flow 18, shaft coupling 19, electric machine support 20, sealing ring 21, sealing plate 22, motor inner casing 23, motor return liquid
Pipe 24 and the cold frequency converter 25 of liquid.Fig. 2 is the cold frequency changer schematic diagram of liquid, and Fig. 3 is the frequency converter base construction of the cold frequency converter of liquid
Schematic diagram, frequency converter covering plate structure schematic diagrames of the Fig. 4 for the cold frequency converter of liquid, the cold frequency converter 25 of liquid mainly include inlet 251, become
Frequency device pedestal 252, coil pipe 253, frequency 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 on the inside of axle sleeve 4 to be used for slidably supporting pump shaft 17, between sliding bearing 3 and axle sleeve 4 is
Gap coordinates.Axle sleeve 4 is using interference fit on stator 5.5 rolling support pump shaft 3 of rolling bearing.The processing essence of axle sleeve 4
Degree is higher, and the processing request of wheel space ring 16 is relative much lower, and its major function is fixed for the axial direction between impeller 2
Position.
Pump shaft 17 is supported using sliding bearing 3 by axle sleeve 4.The motor shaft of fluid-cooled electrical machine 11 passes through front end rolling bearing 9
Support 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
Hold, and rear end rolling bearing 12 adopts common deep groove ball bearing, rear end rolling bearing 12 can also adopt angular contact deep-groove ball sometimes
Bearing.Pump shaft 17 is connected by shaft coupling 19 and motor shaft, and outside fluid-cooled electrical machine 11 drives pump shaft 17 by shaft coupling 19
Rotate, the cold frequency converter 25 of liquid is then assemblied on the housing of fluid-cooled electrical machine 11 by securing member by frequency converter pedestal 252.17 band of pump shaft
Movable vane wheel 2 is rotated, and so as to the fluid pressurization that will be sucked from the pump housing 13,5 mutual tandem of stator coordinate, is fastened on one by steel band 1
Rise, flow velocity is collected and is reduced by the fluid under pressure of impeller 2 by stator 5, and discharged by 13 outlet of the pump housing.
First stage impeller 2 is by axis head nut axially position, axially fixed by axle sleeve 4 between the first order and second level impeller
Position, passes through 16 axially position of wheel space ring between remaining each impeller 2.Have multiple projections radially fixed on 2 inner ring of impeller
On multiple grooves of pump shaft 17.
The effect of stator 5 is that the liquid that impeller 2 is thrown away is collected, and reduces the flow velocity of liquid, partial velocity
After pressure energy being changed into, then be uniformly introduced next stage or feeding fluid pipe network system discharged through 13 outlet of the pump housing.
Stator 5 makes liquid flow in continuous runner, is difficult to form dead angle and diffusion suddenly, and fluid velocity changes than more uniform, water
Power is functional.
One end of part stator 5 is plugged on axle sleeve 4, and the other end coordinates positioning by the tandem between stator 5, for example first
Level stator 5.And lead to interference fit between axle sleeve 4 and stator 5 and be assembled together, match somebody with somebody for gap between sliding bearing 3 and axle sleeve 4
Close.
According to different impeller diameters and different series, 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 on electric machine support 20, as the circulation canal of coolant.In order to realize preferably
Cooling effect, increases the film-cooled heat of the cold frequency converter 25 of liquid, and the cooling of the cold frequency converter 25 of liquid adopts coil arrangement.Liquid is from centrifugation
Pump high pressure chest introduces the cold frequency converter 25 of liquid by inlet 251 by the guiding fluid hole 8 on electric machine support 20 first liquid, then
Liquid is taken away the heat that cold for liquid frequency converter 25 is produced in time by coil pipe 253, it is ensured that the cold frequency converter 25 of liquid all the time one compared with
Low temperature.The cold frequency converter 25 of liquid constitutes closing space by frequency converter pedestal 252 and frequency converter cover plate 254 by sealing ring 256,
Frequency converter pedestal 252 and frequency converter cover plate 254 are assembled by trip bolt 257.The circulating liquid warp of the cold frequency converter 25 of coolant
Cross in the cavity that liquid outlet 255 enters motor inner casing 23 and the closing of motor housing 10.Cooling liquid returning by fluid-cooled electrical machine 11
Hole for back flow 18 of the liquid pipe 24 on electric machine support 20 is connected with multistage pump low pressure chamber by liquid back pipe 15 and constitutes the circulatory system.Cooling
The liquid of fluid-cooled electrical machine 11 is by sealing plate 22 by sealing ring 21 and extraneous separation.In the centrifugal multistage pump multiple centrifugal pump course of work, circulation
Liquid timely takes away the heat and spring bearing of the stator generation of the cold frequency converter 25 of liquid and fluid-cooled electrical machine 11 in the course of the work
The heat that mechanical friction is produced, allows the cold frequency converter of liquid, fluid-cooled electrical machine 11 and spring bearing temperature to be maintained at a relative wind all the time
For cool electric machine, relatively low temperature, improves motor reliability.In partial load condition, the cold variable-frequency motor of liquid is cold by reducing liquid
The rotating speed of motor 11 and reduce the rotating speed of multistage pump, so as to reduce the power consumption of fluid-cooled electrical machine 11, reduce the work(of quiet centrifugal pump
Consumption, reduces the operating cost of quiet centrifugal pump system.
The pump shaft 17 of quiet centrifugal pump of the present utility model is directly driven by fluid-cooled electrical machine 11 by shaft coupling 19.Pump shaft 17
Impeller 2 is liquid pumping to the lift that specifies.Quiet centrifugal pump is sucked through 13 suction inlet of the pump housing liquid by impeller 2
Quiet centrifugal pump, liquid after the pressurization of impeller 2 enter subordinate's impeller 2 through stator 5 and continue pressurization, then pass through subordinate
Stator 5 enters the pressurization of next stage impeller, until being discharged by the stator 5 of final stage after being terminated by 2 pressure process of impeller of final stage.
Finally runner of the quiet centrifugal pump the liquid of high pressure between stator 5 and outer tube 14 sends into pipeline from the outlet of the pump housing 13
System.
Quiet centrifugal pump of the present utility model is removed using fluid-cooled electrical machine 11 and the cold 25 integration-in-one structure of frequency converter of liquid
Cooling fan in conventional motors, eliminates a noise source, while fluid-cooled electrical machine 11 is by motor inner casing 23 and and motor
The dual sealing of shell 10, hinders the propagation of noise, reduces the noise of the operation of fluid-cooled electrical machine 11, so as to reduce centrifugal pump
Noise.
The powerful communication function of quiet Centrifugal Pump Design of the present utility model, including using wireless blue tooth technology, realizing
By the start and stop and rotating speed control of the cold variable-frequency motor of application program operational control liquid on mobile device, such as mobile phone；Pass through
GPRS (general packet radio service technology) transmits a signal to centralized-control center, realizes wireless remote monitering；By industrial total
Wire protocol (such as RS485, Modbus) is realized networking and is just realized by configuring the touch screen operation panel of friendly user's interface
Ground operation.
Above-described specific embodiment, is entered to the purpose of this utility model, technical scheme and beneficial effect
One step describe in detail, be should be understood that the foregoing is only specific embodiment of the present utility model, be not used to limit
Fixed protection domain of the present utility model, all any modifications that within spirit of the present utility model and principle, is made, equivalent are replaced
Change, improve, should be included within protection domain of the present utility model.
Claims (8)
1. a kind of quiet centrifugal pump, it is characterised in that include：
The pump housing, positioned at centrifugal pump bottom, the pump housing includes fluid intake and outlet；
Pump shaft, is axially contained in the pump housing, is socketed with axle sleeve and wheel space ring on the pump shaft；
Sliding bearing, is socketed on the outside of the axle sleeve, slidably supports the pump shaft；
Impeller, is plugged on the pump shaft and by the wheel space ring axially position, and the pump shaft drives the wheel rotation,
So as to the fluid pressurization that will be entered from the pump housing suction inlet；
Stator, on the outside of the axle sleeve, the liquid stator described in chopped-off head pressurizeed by the impeller is collected and reduces flowing
Speed, enters impeller described in next stage and continues pressurization until liquid being discharged from the outlet and sending into water supply system；
The cold variable-frequency motor of liquid, its pass through electric machine support and are axially mounted to the pump housing upper end, and the electric machine support is passed through with the pump housing
Turnbuckle is locked；
The electric machine support has support inner casing and rack shell, is formed described in connecting between the support inner casing and rack shell
The guiding fluid hole and hole for back flow of pump housing chamber；
The cold variable-frequency motor of the liquid is fluid-cooled electrical machine and the cold frequency converter integration-in-one structure of liquid；
The housing of the fluid-cooled electrical machine by comprising motor stator motor inner casing and motor housing constitute, the motor inner casing with electricity
The liquid back pipe for forming motor between the shell of pole is used for the circulation of motor coolant；Have for housing the chamber of the impeller and stator
There are outer tube and inner core, between the outer tube and inner core, form the liquid back pipe for connecting the hole for back flow, the outlet of the liquid back pipe connects
Pass to the outlet of the pump housing；
The cold frequency converter of the liquid by frequency converter pedestal on the motor housing of the fluid-cooled electrical machine, the frequency converter pedestal
There is inlet to be used for connecting the liquid back pipe and coolant being introduced the cold frequency converter of the liquid being cooled down with liquid outlet；
Motor shaft, is axially contained in the middle of the motor inner casing of the fluid-cooled electrical machine, is driven by the fluid-cooled electrical machine and is rotated；
Rolling bearing, motor shaft described in rolling support；
Shaft coupling, for coupling the motor shaft and pump shaft, the fluid-cooled electrical machine drives institute by the motor shaft and shaft coupling
State pump shaft rotation；
The pump shaft adopts mechanical seal through two side positions of the electric machine support, to separate the entrance of the fluid in the pump housing
The electric machine support.
2. a kind of quiet centrifugal pump according to claim 1, it is characterised in that the rolling bearing includes the front end axis of rolling
Hold and rear end rolling bearing, be respectively used to the front end and rear end of motor shaft described in rolling support, the front end rolling bearing is arranged
On the top of the electric machine support, the motor shaft is stretched into through after the front end rolling bearing in the electric machine support and is passed through
The shaft coupling is connected with the pump shaft.
3. a kind of quiet centrifugal pump according to claim 2, it is characterised in that be additionally provided with socket in the electric machine support
Sealing plate on the motor shaft, the sealing plate pass through to form coolant between sealing ring and the electric machine support and circulate to lead to
Road for take away between the front end rolling bearing and electric machine support and motor shaft produce heat；The sealing plate, sealing
The entrance of the cooling passage between circle and electric machine support is respectively communicated to outlet and the hole for back flow of the guiding fluid hole with outlet
Entrance.
4. a kind of quiet centrifugal pump according to claim 1, it is characterised in that the cold frequency converter of the liquid also include coil pipe and
Frequency converter cover plate, the coil pipe are arranged between the frequency converter pedestal and frequency converter cover plate, the frequency converter pedestal and frequency conversion
Device cover plate is by trip bolt assembling and fitted seal circle forms closing space；The liquid inlet of the coil pipe is connected respectively with outlet
Lead to the inlet and liquid outlet of the frequency converter pedestal, and be further communicated to the liquid back pipe.
5. a kind of quiet centrifugal pump according to claim 1, it is characterised in that impeller described in chopped-off head passes through axis head nut axle
To positioning, by axle sleeve axially position between chopped-off head and second level impeller, between remaining impeller at different levels, pass through the wheel space
Ring axially position.
6. a kind of quiet centrifugal pump according to claim 5, it is characterised in that have multiple projections on the inner ring of the impeller
Radially fixed on multiple grooves of pump shaft outer wall.
7. a kind of quiet centrifugal pump 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, positioning is coordinated by steel band tandem between the other end of stator described in chopped-off head and remaining stator.
8. a kind of quiet centrifugal pump according to claim 7, it is characterised in that matched somebody with somebody by being full of between the axle sleeve and stator
Conjunction is assembled together, and coordinates for gap between the sliding bearing and axle sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621010982.3U CN206017178U (en) | 2016-08-31 | 2016-08-31 | A kind of quiet centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621010982.3U CN206017178U (en) | 2016-08-31 | 2016-08-31 | A kind of quiet centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206017178U true CN206017178U (en) | 2017-03-15 |
Family
ID=58256361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621010982.3U Active CN206017178U (en) | 2016-08-31 | 2016-08-31 | A kind of quiet centrifugal pump |
Country Status (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194769A (en) * | 2016-08-31 | 2016-12-07 | 池泉 | A kind of quiet centrifugal pump |
| CN107143530A (en) * | 2017-07-10 | 2017-09-08 | 福建闽东电机股份有限公司 | One kind spin ring cooling electric pump |
| CN108194425A (en) * | 2017-11-21 | 2018-06-22 | 上海裕达实业有限公司 | A kind of cooling structure of grease lubrication molecular pump |
-
2016
- 2016-08-31 CN CN201621010982.3U patent/CN206017178U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194769A (en) * | 2016-08-31 | 2016-12-07 | 池泉 | A kind of quiet centrifugal pump |
| CN107143530A (en) * | 2017-07-10 | 2017-09-08 | 福建闽东电机股份有限公司 | One kind spin ring cooling electric pump |
| CN108194425A (en) * | 2017-11-21 | 2018-06-22 | 上海裕达实业有限公司 | A kind of cooling structure of grease lubrication molecular pump |
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Effective date of registration: 20171018 Address after: 201706 north side of the 3 layer of the 2 building of 6355 East Road, Qingpu District, Shanghai Patentee after: Shanghai Han Automation Technology Co., Ltd. Address before: 201706 Shanghai, Qingpu, Hong Kong East Road, Shanghai Panda Machinery (Group) Co., Ltd. Patentee before: Chi Quan |