CN111106736A - Air gap fixed type synchronous permanent magnet coupler - Google Patents
Air gap fixed type synchronous permanent magnet coupler Download PDFInfo
- Publication number
- CN111106736A CN111106736A CN202010034257.4A CN202010034257A CN111106736A CN 111106736 A CN111106736 A CN 111106736A CN 202010034257 A CN202010034257 A CN 202010034257A CN 111106736 A CN111106736 A CN 111106736A
- Authority
- CN
- China
- Prior art keywords
- output
- rotor
- permanent magnet
- inner rotor
- air gap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 37
- 230000008878 coupling Effects 0.000 claims description 27
- 238000010168 coupling process Methods 0.000 claims description 27
- 238000005859 coupling reaction Methods 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 18
- 125000006850 spacer group Chemical group 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 abstract description 13
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 230000009351 contact transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/104—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
- H02K49/106—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element with a radial air gap
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention belongs to the technical field of permanent magnet transmission, and discloses an air gap fixed type synchronous permanent magnet coupler which comprises an inner rotor, an outer rotor and a permanent magnet, wherein the inner rotor is connected to the end face, close to an output end, of an input connecting disc; the outer rotor is connected to the end face, close to the input end, of the output connecting disc, the inner rotor is installed inside the outer rotor, the inner rotor and the outer rotor are coaxially arranged, and an air gap is formed between the outer ring face of the inner rotor and the inner ring face of the outer rotor; the output end connecting piece is fixedly connected to the output connecting disc, extends towards the inner part of the inner rotor, and is positioned on the outer ring surface of the inner section of the inner rotor, is circular and is coaxial with the inner rotor; and the bearing assembly is arranged between the outer ring surface of the output end connecting piece and the inner ring surface of the inner rotor and is used for rotatably positioning and supporting the output end connecting piece and the inner rotor. The permanent magnet coupler can realize that the position between the inner rotor and the outer rotor, namely an air gap, is relatively fixed, and the problem of collision caused by displacement can not occur during operation.
Description
Technical Field
The invention belongs to the technical field of permanent magnet transmission, and particularly relates to an air gap fixed type synchronous permanent magnet coupler.
Background
In the mechanical industry, transmission equipment is generally connected with power equipment such as a motor and the like and then connected with equipment such as a speed reducer and the like, so that the function of transmitting torque is achieved. At present, the transmission equipment in China mainly comprises a coupler, a hydraulic coupler and an asynchronous permanent magnet coupler. The coupler is simple in structure, difficult in centering, easy to wear, large in vibration noise and the like, and the two transmission devices solve part of problems of the coupler, but need to rely on the existence of slip to realize energy transmission during operation, so that great efficiency loss exists, the temperature of the transmission part is easy to rise, and during overload, the temperature of the transmission part can further rise, even the permanent magnet fails, the normal operation of the equipment is influenced, and a great deal of hidden troubles exist.
The existing synchronous permanent magnet coupler mainly comprises an inner rotor, an outer rotor and connecting parts, wherein permanent magnets are arranged on the inner rotor and the outer rotor, synchronous operation and torque transmission are realized by means of attraction between the permanent magnets of the inner rotor and the outer rotor when equipment runs, and the two rotors rotate synchronously, so that the problem of eddy current heating is avoided, and the synchronous permanent magnet coupler has the advantages of no temperature rise, pure mechanical structure, no harmonic interference, no contact transmission, transmission efficiency close to 100% and the like. However, the input assembly and the output assembly of the existing synchronous permanent magnet coupler are not positioned, air gaps (namely gaps between every two corresponding permanent magnets in the input assembly and the output assembly) are not fixed, centering is complicated during installation, and axial and radial play is easy to occur during operation, so that the permanent magnets and related parts collide, and equipment is damaged or even scrapped.
Because the inner rotor and the outer rotor of the existing synchronous permanent magnet coupler are relatively independent, are not connected and supported, and the attraction force between permanent magnets is large, the centering is difficult during the installation and the disassembly, the air gap can be changed and is not fixed, the collision is easy to occur, other parts (such as a taper sleeve structure and the like) are required to be utilized for assisting the centering or the on-site manual centering, and the time and the labor are wasted; the inner rotor and the outer rotor are required to be separately shipped during transportation, the damage is easily caused in the process, and if the rotors are shipped integrally, the rotors can be completed after being connected by using auxiliary components; when the rotor is in operation, the air gap between the inner rotor and the outer rotor is small, and if installation deviation exists or equipment fixing bolts such as a motor are loosened and offset occurs, permanent magnets in the two rotors and related parts are easy to collide, so that irreversible equipment damage is caused. This results in that the application performance, stability, safety, etc. of the existing synchronous permanent magnetic coupler are greatly affected.
Disclosure of Invention
To solve the above problems, the present invention provides an air gap fixed type synchronous permanent magnet coupler, which can solve the above problems.
In order to achieve the purpose, the invention adopts the technical scheme that:
an air gap fixed synchronous permanent magnet coupler comprises
An input connection pad;
the inner rotor is connected to the end face, close to the output end, of the input connecting disc;
an output land;
the outer rotor is connected to the end face, close to the input end, of the output connecting disc, the inner rotor is installed inside the outer rotor, the inner rotor and the outer rotor are coaxially arranged, and an air gap is formed between the outer ring surface of the inner rotor and the inner ring surface of the outer rotor;
the output end connecting piece is fixedly connected to the output connecting disc, extends towards the inner part of the inner rotor, and is positioned on the outer ring surface of the inner section of the inner rotor, is circular and is coaxial with the inner rotor;
a bearing assembly mounted between an outer annular surface of an output end connector and an inner annular surface of an inner rotor, the bearing assembly for rotatably positioning and supporting the output end connector and the inner rotor.
Preferably, the bearing assembly comprises two bearings spaced apart.
Preferably, the bearing assembly further comprises a positioning assembly, the positioning assembly comprises a spacer bush and a shaft retaining ring, the spacer bush is arranged between the two bearings, the spacer bush is used for positioning the axial distance between the two bearings, the shaft retaining ring is arranged on the outer side of the bearings, and the shaft retaining ring is used for preventing the two bearings from moving oppositely and reversely.
Preferably, the output end connecting piece comprises an output coupling and an output shaft, the output shaft is arranged on the end face of the output connecting disc opposite to the input end, the output shaft is connected to the output coupling, and a part of the shaft section of the output shaft extends into the inner rotor.
Preferably, the output end connecting piece is an output shaft, the output shaft is fixedly connected to the output connecting disc, and part of the shaft section of the output shaft extends into the inner rotor.
Preferably, an annular sealing end cover is mounted at the end part, far away from the output connecting disc, of the outer rotor, and a felt oil seal is arranged on the inner ring surface of the sealing end cover and abuts against the outer ring surface of the input connecting disc to achieve sealing.
Preferably, an input coupling is installed on the end face of the input connecting disc, which faces away from the output end, and an elastic plum blossom disc is installed between the input coupling and the input connecting disc, and is used for isolating instantaneous torsional vibration and avoiding the influence of parallelism error and angle error during installation.
Preferably, the input connecting disc further comprises a cover plate, and the cover plate is connected to the inner hole of the input connecting disc through a bolt to achieve sealing.
The beneficial effects of the invention are as follows:
in application practice, the synchronous permanent magnet coupler has the advantages of low vibration isolation noise, non-contact transmission and high operation efficiency, meanwhile, the input assembly and the output assembly of the synchronous permanent magnet coupler are integrated, the synchronous permanent magnet coupler can be integrally transported without considering the problems of splitting or mounting other auxiliary components and possible collision of the permanent magnet and related components thereof, and meanwhile, the synchronous permanent magnet coupler can also be automatically centered, manual adjustment and centering are not needed during mounting, the position between an inner rotor and an outer rotor, namely an air gap, is relatively fixed, the problem of collision caused by displacement is avoided during operation, the permanent magnet is not damaged, the stability and the safety of the whole transmission system are improved, and high-efficiency production is ensured.
Drawings
Fig. 1 is a schematic structural diagram of an air gap stationary type synchronous permanent magnet coupler according to the present invention.
Fig. 2 is a partially enlarged view of the arrangement structure of the permanent magnets in the air gap stationary type synchronous permanent magnet coupler according to the present invention.
Fig. 3 is a schematic structural diagram of a power input assembly in the air gap fixed synchronous permanent magnet coupler according to the present invention.
Fig. 4 is a schematic structural diagram of a power output assembly in the air gap fixed type synchronous permanent magnet coupler according to the present invention.
Fig. 5 is a schematic view showing a coupler structure without an output coupling in embodiment 2 of the air gap stationary type synchronous permanent magnet coupler of the present invention.
The reference numerals include:
1-input coupling, 2-elastic plum blossom disc, 3-input connecting disc, 4-outer rotor, 5-output connecting disc, 6-output coupling, 7-output shaft, 8-bearing, 9-spacer bush, 10-inner rotor, 11-permanent magnet I, 12-permanent magnet II, 13-sealing end cover, 14-felt pad oil seal, 15-shaft retainer ring and 16-cover plate.
Detailed Description
In order to make the purpose, technical solution and advantages of the present technical solution more clear, the present technical solution is further described in detail below with reference to specific embodiments. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present teachings.
Example 1
As shown in fig. 1 to 4, the gap-fixed synchronous permanent magnet coupler according to the present embodiment includes an input land 3; an inner rotor 10 connected to an end surface of the input land 3 near the output end; an output land 5; the outer rotor 4 is connected to the end face, close to the input end, of the output connecting disc 5, the inner rotor 10 is installed inside the outer rotor 4, the inner rotor 10 and the outer rotor 4 are coaxially arranged, and an air gap is formed between the outer ring face of the inner rotor 10 and the inner ring face of the outer rotor 4; the output end connecting piece is fixedly connected to the output connecting disc 5, extends towards the inside of the inner rotor 10, and is positioned on the outer annular surface of the inner section of the inner rotor 10, is circular and is coaxially arranged with the inner rotor 10; and a bearing assembly installed between an outer circumferential surface of the output end connection member and an inner circumferential surface of the inner rotor 10 for rotatably positioning and supporting the output end connection member and the inner rotor 10.
Preferably, the bearing assembly comprises two bearings 8 spaced apart.
The bearing assembly further comprises a positioning assembly, the positioning assembly comprises a spacer 9 and a shaft retainer ring 15, the spacer 9 is arranged between the two bearings 8, the spacer 9 is used for positioning the axial distance between the two bearings 8, the shaft retainer ring 15 is arranged on the outer side of the bearings 8, and the shaft retainer ring 15 is used for preventing the two bearings 8 from moving oppositely and reversely.
The output end connecting piece comprises an output coupling 6 and an output shaft 7, the output shaft 7 is installed on the end face, opposite to the input end, of the output connecting disc 5, the output shaft 7 is connected to the output coupling 6, and part of the shaft section of the output shaft 7 extends into the inner rotor 10.
The end part of the outer rotor 4 far away from the output connecting disc 5 is provided with an annular sealing end cover 13, the inner ring surface of the sealing end cover 13 is provided with a felt oil seal 14, and the felt oil seal 14 is abutted against the outer ring surface of the input connecting disc 3 to realize sealing.
An input coupling 1 is installed on the end face, opposite to the output end, of the input connecting disc 3, an elastic plum blossom disc 2 is installed between the input coupling 1 and the input connecting disc 3, and the elastic plum blossom disc 2 is used for isolating instantaneous torsional vibration and avoiding the influences of parallelism errors and angle errors during installation.
The input connecting disc 3 further comprises a cover plate 16, and the cover plate 16 is connected to the inner hole of the input connecting disc 3 through bolts to realize sealing.
Specifically, the input coupling 1 is connected with an output shaft 7 of a power source such as a motor and the like to transmit input torque, the input coupling is connected to an input connecting disc 3 through an elastic plum blossom disc 2, a cover plate 16 is connected to an inner hole of the input connecting disc 3 through a bolt, the input connecting disc 3 is connected with an inner rotor 10 through a bolt, a permanent magnet II 12 is embedded in the inner rotor 10 through a mounting groove, and magnetic poles of the permanent magnet II are installed at opposite intervals. The input coupling 1, the elastic plum blossom disc 2, the input connecting disc 3, the inner rotor 10, the permanent magnet II 12 and the cover plate 16 jointly form an input assembly.
The output coupling 6 is connected with an input shaft of a speed reducer and the like, transmits input torque from a power source to load equipment, is connected to an output connecting disc 5 through bolts, the output connecting disc 5 is connected to an output shaft 7 through bolts, the output connecting disc 5 is also connected with the outer rotor 4 through bolts, permanent magnets I11 are embedded in the outer rotor 4 through mounting grooves, are installed at intervals with opposite magnetic poles, are the same as the inner rotors 10 in number, the sealing end covers 13 are connected to the outer rotor 4 through bolts, and felt pad oil seals 14 are embedded in inner hole grooves of the sealing end covers 13 to play roles of sealing and dust prevention. The outer rotor 4, the output connecting disc 5, the output coupling 6, the output shaft 7, the permanent magnet I11, the sealing end cover 13 and the felt oil seal 14 jointly form an output assembly.
The bearing 8 is arranged between an input assembly and an output assembly which are composed of the inner rotor 4 and the outer rotor 4, the effects of rotation, positioning and supporting are achieved, the spacer bush 9 and the shaft retainer ring 15 are arranged between the bearing 8, the effect of fixing the bearing 8 is achieved, the synchronous permanent magnet coupler input assembly and the synchronous permanent magnet coupler output assembly are integrated through the structure, air gap positions do not need to be adjusted during installation, and automatic centering can be achieved.
The input assembly, the output assembly, the bearing 8 and the like together form the synchronous permanent magnet coupler. When the synchronous permanent magnet coupler is assembled and needs to be transported, the synchronous permanent magnet coupler can be transported integrally without installing other auxiliary components; when the motor is installed, the body can be directly installed on a speed reducer shaft without other operations such as centering and air gap adjustment, the motor is connected with an inner rotor 10 of the permanent magnet coupler through an input coupling 1, the inner rotor 4 and the outer rotor 4 transmit torque through the air gap, the inner rotor 4 and the outer rotor 4, namely an input assembly and an output assembly, run synchronously under the interaction of magnetic fields and are in non-mechanical contact transmission, and finally the outer rotor 4 drives a working machine to run through an output coupling 6 connected with the outer rotor 4, so that the power transmission from the motor to the working machine is realized. Because two permanent magnet rotors run synchronously, the problem of eddy current heating does not exist, the temperature rise is avoided, the elasticity is large, the vibration damping effect is good, the structure is simple, the assembly and disassembly are convenient, and the transmission efficiency is high and the maintenance is free.
The input coupling 1 and the output coupling 6 are respectively an input/output coupling 6 used for connecting the rotor of the permanent magnet coupler with a driving system and a load; the input connecting disc 3 and the output connecting disc 5 are input/output connecting discs 5 respectively, and are used for connecting the inner rotor 4, the outer rotor 4, the output shaft 7 and the input/output coupling 6; the outer rotor 4, the inner rotor 10, the permanent magnets I11 and the permanent magnets II 12 are respectively arranged on the outer rotor 4 and the inner rotor 10 at intervals according to the principle that the directions of magnetic poles are opposite, and the number of the permanent magnets is the same; the bearing 8 is arranged between the inner rotor 10 and the output shaft 7 to play the roles of supporting, rotating and centering, and the spacer 9 and the retaining ring 15 for the shaft are used for fixing the position of the bearing 8; the felt oil seal 14 is mounted on the end cover 13, and plays a role of sealing and dust prevention together with the cover plate 16.
Example 2
As shown in fig. 5, the air-gap fixed type synchronous permanent magnet coupler in the present embodiment is similar to the air-gap fixed type synchronous permanent magnet coupler in embodiment 1 except for the structure of the output-side connection member.
The output end connecting piece is an output shaft 71, the output shaft 71 is fixedly connected to the output connecting disc 5, and part of the shaft section of the output shaft 71 extends into the inner rotor 10. Under the condition of keeping other spare parts unchangeable, the accessible cancels output shaft coupling 6, reforms original output shaft 71, processes the shaft hole for the size that matches speed reducer axle head diameter and length to increase corresponding connection keyway, thereby realize directly inserting the speed reducer axle in the output shaft 71 after the reformulation, can adapt to the less operational environment of axial length like this, satisfy different on-the-spot operating mode demands.
The foregoing is only a preferred embodiment of the present invention, and many variations in the specific embodiments and applications of the invention may be made by those skilled in the art without departing from the spirit of the invention, which falls within the scope of the claims of this patent.
Claims (8)
1. An air gap fixed synchronous permanent magnet coupler is characterized in that: comprises that
An input connection pad;
the inner rotor is connected to the end face, close to the output end, of the input connecting disc;
an output land;
the outer rotor is connected to the end face, close to the input end, of the output connecting disc, the inner rotor is installed inside the outer rotor, the inner rotor and the outer rotor are coaxially arranged, and an air gap is formed between the outer ring surface of the inner rotor and the inner ring surface of the outer rotor;
the output end connecting piece is fixedly connected to the output connecting disc, extends towards the inner part of the inner rotor, and is positioned on the outer ring surface of the inner section of the inner rotor, is circular and is coaxial with the inner rotor;
a bearing assembly mounted between an outer annular surface of an output end connector and an inner annular surface of an inner rotor, the bearing assembly for rotatably positioning and supporting the output end connector and the inner rotor.
2. The air gap stationary synchronous permanent magnet coupler of claim 1, wherein: the bearing assembly comprises two bearings arranged at intervals.
3. The air gap stationary synchronous permanent magnet coupler of claim 2, wherein: the bearing assembly further comprises a positioning assembly, the positioning assembly comprises a spacer bush and a retaining ring for the shaft, the spacer bush is arranged between the two bearings, the spacer bush is used for positioning the axial distance between the two bearings, the retaining ring for the shaft is arranged on the outer side of the bearings, and the retaining ring for the shaft is used for preventing the two bearings from moving back to back relatively.
4. The air gap stationary synchronous permanent magnet coupler of claim 1, wherein: the output end connecting piece comprises an output coupling and an output shaft, the output shaft is arranged on the end face of the output connecting disc, which faces away from the input end, the output shaft is connected to the output coupling, and part of the shaft section of the output shaft extends to the inside of the inner rotor.
5. The air gap stationary synchronous permanent magnet coupler of claim 1, wherein: the output end connecting piece is an output shaft which is fixedly connected to the output connecting disc, and part of the shaft section of the output shaft extends into the inner rotor.
6. The air gap stationary synchronous permanent magnet coupler of claim 1, wherein: the end part, far away from the output connecting disc, of the outer rotor is provided with an annular sealing end cover, the inner ring surface of the sealing end cover is provided with a felt oil seal, and the felt oil seal is abutted to the outer ring surface of the input connecting disc to realize sealing.
7. The air gap stationary synchronous permanent magnet coupler of claim 1, wherein: an input coupling is installed on the end face, opposite to the output end, of the input connecting disc, an elastic plum blossom disc is installed between the input coupling and the input connecting disc, and the elastic plum blossom disc is used for isolating instantaneous torsional vibration and avoiding the influence of parallelism error and angle error during installation.
8. The air gap stationary synchronous permanent magnet coupler of claim 1, wherein: the input connecting disc also comprises a cover plate, and the cover plate is connected to the inner hole of the input connecting disc through a bolt so as to realize sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010034257.4A CN111106736A (en) | 2020-01-13 | 2020-01-13 | Air gap fixed type synchronous permanent magnet coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010034257.4A CN111106736A (en) | 2020-01-13 | 2020-01-13 | Air gap fixed type synchronous permanent magnet coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111106736A true CN111106736A (en) | 2020-05-05 |
Family
ID=70426640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010034257.4A Pending CN111106736A (en) | 2020-01-13 | 2020-01-13 | Air gap fixed type synchronous permanent magnet coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111106736A (en) |
-
2020
- 2020-01-13 CN CN202010034257.4A patent/CN111106736A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10205373B2 (en) | Self-alignment protection device for permanent-magnet coupling | |
| CN111946656A (en) | Combined permanent magnetic suspension bearing for pump | |
| CN109968398B (en) | Ultra-thin type external rotor harmonic speed reduction all-in-one | |
| CN111810254A (en) | Induced draft fan steam-electricity dual-drive system and operation control method thereof | |
| CN211321191U (en) | Air gap fixed type synchronous permanent magnet coupler | |
| CN111106736A (en) | Air gap fixed type synchronous permanent magnet coupler | |
| CN201475184U (en) | Ready-packaged braking-wheel coupling | |
| CN101702544B (en) | Tilting-pad bearing built-in motor | |
| CN105071616B (en) | A kind of magnetic coupling | |
| CN213478965U (en) | Flexible ripple coupling | |
| CN209258560U (en) | A kind of carton packing machine drive mechanism | |
| CN211693294U (en) | Casting coupling | |
| CN107370337B (en) | Vertical installation structure and method of permanent magnet coupler and online separation and resetting method | |
| CN211701818U (en) | Magnetic coupling motor of integrated paddle | |
| CN112510914A (en) | Transmission structure of servo press | |
| CN208754168U (en) | A kind of distance-limiting type permanent magnet clutch | |
| CN201563017U (en) | Tilting-pad bearing built-in type motor | |
| CN216789053U (en) | Integrated electric air compressor | |
| CN111322255A (en) | Transmission device for clean pure vapor compressor | |
| CN212508951U (en) | Combined permanent magnetic suspension bearing for pump | |
| CN211085529U (en) | Flange type torque sensor mounting base | |
| CN220440537U (en) | Torque transmission device for torque motor | |
| CN217207425U (en) | Flange type internal sliding on-line switching structure of multi-input system | |
| CN115898553B (en) | Easy dismounting's magnetic suspension turbine structure | |
| CN205559302U (en) | Novel magnetic force swirl pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 113122 No.11 Binhe Road, Shenfu demonstration area, Fushun City, Liaoning Province Applicant after: Shenyang Research Institute Co.,Ltd. Address before: 113122 No. 11 Binhe Road, Fushun Economic Development Zone, Fushun City, Liaoning Province Applicant before: CCTEG (China Coal Technology and Engineering Group Corp.) |
|
| CB02 | Change of applicant information |