CN113187758A - Impeller axial force counteracts and balancing unit - Google Patents
Impeller axial force counteracts and balancing unit Download PDFInfo
- Publication number
- CN113187758A CN113187758A CN202110689030.8A CN202110689030A CN113187758A CN 113187758 A CN113187758 A CN 113187758A CN 202110689030 A CN202110689030 A CN 202110689030A CN 113187758 A CN113187758 A CN 113187758A
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- Prior art keywords
- magnetic ring
- stator
- volute
- magnetic
- shell
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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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/041—Axial thrust balancing
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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
- F04D29/007—Details, component parts, or accessories especially adapted for liquid 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
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid 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
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid 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
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses an impeller axial force counteraction and balance device, which comprises a volute, wherein a working medium inlet is arranged at the center of one side of the volute, a working medium outlet is arranged at one side of the bottom of the volute, a stator shell is fixedly arranged at one side of the volute, magnetic force generated by a first magnetic ring is always kept in an adsorption state with a second magnetic ring, and the second magnetic ring always has an attraction force on the first magnetic ring when a rotating shaft moves due to the magnetic adsorption of the first magnetic ring and the second magnetic ring, so that the purposes of balancing and counteracting the force are achieved, a second magnetic ring adjusting cavity is arranged, the second magnetic ring is positioned in the second magnetic ring adjusting cavity, the position of the second magnetic ring in the second magnetic ring adjusting cavity can be adjusted, so that the magnitude of the magnetic force between the first magnetic ring and the second magnetic ring is controlled, the function of adjusting the magnitude of the rotating shaft force is further achieved, a plane grinding disc is arranged, and the friction loss between a shaft sleeve and a shaft rod fixing groove is reduced, has the advantages of small volume, outstanding balance performance, convenient manufacture and the like.
Description
Technical Field
The invention relates to the field of fluid machinery, in particular to an impeller axial force counteracting and balancing device.
Background
The pressure of the working medium in front of and behind the impeller is not balanced. When the impeller works, the impeller drives the working medium to rotate, and in the process, the working medium acts on the suction inlet of the impeller and the working medium acting on the back of the impeller in a manner of being unequal to each other before and after the working medium passes through the impeller of the rotating machine. Meanwhile, the suction inlet of the impeller of the rotating machine is low pressure, and the back of the impeller is high pressure, so that pressure difference can be formed between the front wheel cover and the rear wheel disc of the impeller due to different pressures in front of and behind the impeller, and the pressures of working media acting on the front cover plate and the rear cover plate cannot be balanced with each other, so that an axial force is generated.
The axial component of the working medium momentum changes. Through the process that the working medium flows in from the impeller suction inlet and flows out from the impeller outlet, the momentum component in the axial force direction of the working medium can be changed, because the speed of the working medium acting on the front and the back of the impeller is changed, and the speed direction is also changed greatly. According to the momentum theorem analysis, in the process that the working medium passes through the impeller, an impulse force, also called a dynamic counter force, is generated in the axial direction due to the change of the momentum of the working medium on the axial component.
The existing balancing device is mostly provided for ensuring the balance of the impeller force, the force of the impeller is counteracted in a fluid or electromagnetic mode, but the effect is general, and the problem of the impeller force cannot be effectively solved.
Disclosure of Invention
In order to solve the existing problems, the invention provides an impeller axial force counteracting and balancing device.
The invention is realized by the following technical scheme:
an impeller axial force counteracting and balancing device comprises a volute, wherein a working medium inlet is formed in the center of one side of the volute, a working medium outlet is formed in one side of the bottom of the volute, a stator shell is fixedly installed on one side of the volute, a first installation groove is formed in one side of the stator shell, a rotor shell is installed in the first installation groove, a shell eave is arranged at the outer ring of the rotor shell, a shaft sleeve is fixedly installed in the rotor shell, radial multistage magnetic rings are uniformly and fixedly installed on the inner ring wall of the rotor shell, a first magnetic ring is sleeved on the shaft sleeve, a shaft rod fixing groove is formed in the first installation groove, a rotating shaft is installed in the shaft rod fixing groove, one end of the rotating shaft extends into the shaft sleeve and is clamped with the shaft sleeve, an impeller is fixedly installed on one side of the rotor shell, and an installation hole is fixedly formed in the center of the impeller, one end of the shaft sleeve extends into the mounting hole, a stator clamping groove is formed in the other side of the stator shell, a stator is inserted into the stator clamping groove, a second magnetic ring adjusting cavity is formed in the center of the inner wall of the stator clamping groove, and a second magnetic ring is inserted into the second magnetic ring adjusting cavity.
Preferably, one side of the volute is provided with a second mounting groove, and the second mounting groove is communicated with the working medium outlet.
Preferably, four corners of the side wall of the volute are respectively provided with a first threaded hole, each threaded hole is connected with a bolt in a threaded manner, four corners of the stator shell are respectively provided with a second threaded hole, and the volute is connected with the stator shell in a threaded manner through the bolts.
Preferably, a sealing groove is formed in the side wall of the stator housing, a sealing ring is installed in the sealing groove, and the sealing ring is arranged between the volute and the stator housing.
Preferably, the first mounting hole is in interference fit with the shaft sleeve, the shaft sleeve is in interference fit with the rotating shaft, and the axes of the first magnetic ring and the second magnetic ring are arranged oppositely.
Preferably, the side wall of the shaft rod fixing groove opposite to the shaft sleeve is embedded with a plane grinding sheet.
Compared with the prior art, the invention has the beneficial effects that: the magnetic force generated by the first magnetic ring always keeps an adsorption state with the second magnetic ring, because the magnetic force of the first magnetic ring and the second magnetic ring is adsorbed, if the rotating shaft moves in a string manner, the magnetic force between the first magnetic ring and the second magnetic ring is inevitably overcome, the second magnetic ring always has an attraction force to the first magnetic ring, so that the purposes of balancing and offsetting the force are achieved, the second magnetic ring adjusting cavity is arranged, the second magnetic ring is positioned in the second magnetic ring adjusting cavity, the position of the second magnetic ring in the second magnetic ring adjusting cavity can be adjusted, the size of the magnetic force between the first magnetic ring and the second magnetic ring is controlled, the effect of adjusting the size of the rotating shaft force is further achieved, the plane grinding sheet is arranged, the friction loss between the shaft sleeve and the shaft rod fixing groove is reduced, and the shaft rod fixing groove has the advantages of small size, outstanding balance performance, convenience in manufacturing and the like.
Drawings
FIG. 1 is a perspective view of the structure of the present invention;
FIG. 2 is a cross-sectional view of the structure of the present invention;
FIG. 3 is a front exploded view of FIG. 1 in accordance with the present invention;
FIG. 4 is a rear exploded view of FIG. 1 in accordance with the present invention;
FIG. 5 is a magnetic force diagram of the first magnetic ring in FIG. 2 according to the present invention;
fig. 6 is a schematic magnetic force diagram of the second magnetic ring in the structure diagram 3 according to the present invention.
In the figure: the magnetic pump comprises a volute 1, a working medium inlet 2, a working medium outlet 3, an impeller 4, a mounting hole 5, a rotor shell 6, a radial multistage magnetic ring 7, a first magnetic ring 8, a shaft sleeve 9, a stator shell 10, a first mounting groove 11, a rotating shaft 12, a shaft rod fixing groove 13, a stator 14, a second magnetic ring 15, a second magnetic ring adjusting cavity 16, a second mounting groove 17 and a stator clamping groove 18.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings:
as shown in fig. 1, 2, 3, 4, 5, and 6, an impeller axial force counteracting and balancing device includes a volute 1, a working medium inlet 2 is disposed at a center of one side of the volute 1, a working medium outlet 3 is disposed at one side of a bottom of the volute 1, a stator housing 10 is fixedly mounted at one side of the volute 1, a first mounting groove 11 is disposed at one side of the stator housing 10, a rotor housing 6 is mounted in the first mounting groove 11, a housing eave is disposed at an outer ring of the rotor housing 6, a shaft sleeve 9 is fixedly mounted in the rotor housing 6, radial multistage magnetic rings 7 are uniformly and fixedly mounted on an inner annular wall of the rotor housing 6, a first magnetic ring 8 is sleeved on the shaft sleeve 9, a shaft fixing groove 13 is disposed in the first mounting groove 11, a rotating shaft 12 is mounted in the shaft fixing groove 13, one end of the rotating shaft 12 extends into the shaft sleeve 9 and is clamped with the shaft sleeve, an impeller 4 is fixedly mounted on one side of the rotor shell 6, a mounting hole 5 is fixedly formed in the center of the impeller 4, one end of the shaft sleeve 9 extends into the mounting hole 5, a stator clamping groove 18 is formed in the other side of the stator shell 10, a stator 14 is inserted into the stator clamping groove 18, a second magnetic ring adjusting cavity 18 is formed in the center of the inner wall of the stator clamping groove 18, and a second magnetic ring 17 is inserted into the second magnetic ring adjusting cavity 18.
And a second mounting groove 17 is formed in one side of the volute 1, and the second mounting groove 17 is communicated with the working medium outlet 3.
The four corners of the side wall of the volute 1 are respectively provided with a first threaded hole, each threaded hole is connected with a bolt in a threaded mode, the four corners of the stator shell 10 are respectively provided with a second threaded hole, and the volute 1 is connected with the stator shell 10 in a threaded mode through the bolts.
A sealing groove is formed in the side wall of the stator housing 10, a sealing ring is installed in the sealing groove, and the sealing ring is arranged between the volute 1 and the stator housing 10.
The first mounting hole 5 is in interference fit with the shaft sleeve 9, the shaft sleeve 9 is in interference fit with the rotating shaft 12, and the axes of the first magnetic ring 8 and the second magnetic ring 17 are arranged oppositely.
And a plane grinding sheet is embedded in the side wall of the shaft rod fixing groove 13 opposite to the shaft sleeve 9.
The working principle is as follows: when in use, the device is sequentially installed, the volute 1 and the stator shell 10 are sealed through a sealing ring to prevent water leakage, a plurality of clamping blocks are uniformly and fixedly installed in the stator clamping groove 18, the stator 14 is in a ring shape, stator windings are uniformly and fixedly installed on the inner ring wall of the stator 14, each clamping block is arranged between two adjacent stator windings, so that the stator 14 can be well fixed in the stator clamping groove 18, the radial multistage magnetic ring 7 arranged in the rotor shell 6 is positioned between the plurality of stator windings arranged on the inner ring wall of the stator 14, so that the rotor can normally run, at the moment (referring to figures 5 and 6), the first magnetic ring 8 and the second magnetic ring 15 attract each other in an opposite polarity, the rotor shell 6 is provided with a shell brim and is limited at the first installation groove 11, so that the magnetic force generated by the first magnetic ring 8 and the second magnetic ring 17 are always kept in an adsorption state, due to the magnetic adsorption of the two, if the rotating shaft moves in series, the magnetic force between the two is inevitably needed to be overcome, the second magnetic ring 15 always has an attraction force to the first magnetic ring 8, so that the purpose of balancing and offsetting the force of the impeller 4 is achieved, and on the other hand, a radial magnetic field generated by the stator 14 and the radial multistage magnetic rings 7 is not influenced, so that the normal operation of the device is ensured.
Be provided with second magnetic ring and adjust cavity 16, second magnetic ring 15 is located second magnetic ring and adjusts cavity 16, can adjust the position in cavity 16 through adjusting second magnetic ring 15, thereby control the size of magnetic force between the two, further play the effect that the regulation is used for controlling pivot 12 power size, be provided with the plane abrasive disc, reduce the friction loss between axle sleeve 9 and the shaft stick fixed slot 13, and compare in prior art, can balance the pivot, have small, the balancing performance is outstanding, be convenient for advantages such as preparation.
In addition, as for the magnetic field which is mutually attracted between the second magnetic ring 15 and the first magnetic ring 8, the attracting magnetic field may be formed by using only one magnetic block and a material capable of being magnetically attracted, or may be replaced by using a component such as an electromagnet, etc., and the attracting magnetic field is secured, and the shape, size, magnetic force, and material thereof are arranged according to the machine to be applied.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. An impeller axial force counteracting and balancing device comprising a volute (1), characterised by; a working medium inlet (2) is arranged at the center of one side of the volute (1), a working medium outlet (3) is arranged at one side of the bottom of the volute (1), a stator shell (10) is fixedly arranged at one side of the volute (1), a first mounting groove (11) is arranged at one side of the stator shell (10), a rotor shell (6) is arranged in the first mounting groove (11), a shell eave is arranged at the outer ring of the rotor shell (6), a shaft sleeve (9) is fixedly arranged in the rotor shell (6), radial multistage magnetic rings (7) are uniformly and fixedly arranged on the inner ring wall of the rotor shell (6), a first magnetic ring (8) is sleeved on the shaft sleeve (9), a shaft rod fixing groove (13) is arranged in the first mounting groove (11), a rotating shaft (12) is arranged in the shaft rod fixing groove (13), one end of the rotating shaft (12) extends into the shaft sleeve (9) and is clamped with the shaft sleeve, an impeller (4) is fixedly mounted on one side of the rotor shell (6), a mounting hole (5) is fixedly formed in the center of the impeller (4), one end of the shaft sleeve (9) extends into the mounting hole (5), a stator clamping groove (18) is formed in the other side of the stator shell (10), a stator (14) is inserted into the stator clamping groove (18), a second magnetic ring adjusting cavity (16) is formed in the center of the inner wall of the stator clamping groove (18), and a second magnetic ring (15) is inserted into the second magnetic ring adjusting cavity (16).
2. An impeller axial force counteracting and balancing device according to claim 1, characterized in that: and a second mounting groove (17) is formed in one side of the volute (1), and the second mounting groove (17) is communicated with the working medium outlet (3).
3. An impeller axial force counteracting and balancing device according to claim 1, characterized in that: the spiral case is characterized in that first threaded holes are formed in four corners of the side wall of the spiral case (1) respectively, a bolt is connected to each threaded hole in a threaded mode, second threaded holes are formed in four corners of the stator shell (10) respectively, and the spiral case (1) is connected with the stator shell (10) in a threaded mode through the bolts.
4. An impeller axial force counteracting and balancing device according to claim 1, characterized in that: the side wall of the stator shell (10) is provided with a sealing groove, a sealing ring is installed in the sealing groove, and the sealing ring is arranged between the volute (1) and the stator shell (10).
5. An impeller axial force counteracting and balancing device according to claim 1, characterized in that: the first mounting hole (5) is in interference fit with the shaft sleeve (9), the shaft sleeve (9) is in interference fit with the rotating shaft (12), and the axes of the first magnetic ring (8) and the second magnetic ring (15) are arranged oppositely.
6. An impeller axial force counteracting and balancing device according to claim 1, characterized in that: and a plane grinding sheet is embedded in the side wall of the shaft rod fixing groove (13) opposite to the shaft sleeve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110689030.8A CN113187758B (en) | 2021-06-22 | 2021-06-22 | Impeller axial force counteracts and balancing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110689030.8A CN113187758B (en) | 2021-06-22 | 2021-06-22 | Impeller axial force counteracts and balancing unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113187758A true CN113187758A (en) | 2021-07-30 |
| CN113187758B CN113187758B (en) | 2022-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110689030.8A Active CN113187758B (en) | 2021-06-22 | 2021-06-22 | Impeller axial force counteracts and balancing unit |
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| Country | Link |
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| CN (1) | CN113187758B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883065A (en) * | 2021-09-28 | 2022-01-04 | 晋江爱家制冷设备有限公司 | Double-rotor shielding motor |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201202414D0 (en) * | 2011-02-21 | 2012-03-28 | Mitsubishi Electric Corp | Pump and heat pump apparatus |
| US20130121821A1 (en) * | 2010-07-12 | 2013-05-16 | Terumo Kabushiki Kaisha | Centrifugal pump apparatus |
| US20140205467A1 (en) * | 2013-01-24 | 2014-07-24 | Thoratec Corporation | Impeller position compensation using field oriented control |
| CN205207206U (en) * | 2015-12-02 | 2016-05-04 | 湖南师范大学 | Miniature pump integral type magnetic drive pump based on axial motor drive |
| CN105863926A (en) * | 2016-06-08 | 2016-08-17 | 南京大洋冷却系统技术有限公司 | Magnetic levitation water turbine |
| CN205677755U (en) * | 2016-06-08 | 2016-11-09 | 南京大洋冷却系统技术有限公司 | The magnetic suspension hydraulic turbine |
| CN110159539A (en) * | 2019-04-22 | 2019-08-23 | 江苏大学 | A kind of multistage pump based on permanent magnetism axial force adaptive equalization device |
| CN110462218A (en) * | 2017-01-27 | 2019-11-15 | 雷勃美国公司 | Centrifugal pump assemblages and its assemble method with axial flux motor |
| CN110701094A (en) * | 2019-10-16 | 2020-01-17 | 大连金石泵业有限公司 | Axial force balance magnetic device for pump |
| CN111396322A (en) * | 2020-04-20 | 2020-07-10 | 江苏威德凯泵业科技有限公司 | Suspension magnetic drive pump with self-adaptive adjustment of axial force of pump shaft |
| CN111946656A (en) * | 2020-08-31 | 2020-11-17 | 杭州大路实业有限公司 | Combined permanent magnetic suspension bearing for pump |
-
2021
- 2021-06-22 CN CN202110689030.8A patent/CN113187758B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130121821A1 (en) * | 2010-07-12 | 2013-05-16 | Terumo Kabushiki Kaisha | Centrifugal pump apparatus |
| GB201202414D0 (en) * | 2011-02-21 | 2012-03-28 | Mitsubishi Electric Corp | Pump and heat pump apparatus |
| US20140205467A1 (en) * | 2013-01-24 | 2014-07-24 | Thoratec Corporation | Impeller position compensation using field oriented control |
| CN205207206U (en) * | 2015-12-02 | 2016-05-04 | 湖南师范大学 | Miniature pump integral type magnetic drive pump based on axial motor drive |
| CN105863926A (en) * | 2016-06-08 | 2016-08-17 | 南京大洋冷却系统技术有限公司 | Magnetic levitation water turbine |
| CN205677755U (en) * | 2016-06-08 | 2016-11-09 | 南京大洋冷却系统技术有限公司 | The magnetic suspension hydraulic turbine |
| CN110462218A (en) * | 2017-01-27 | 2019-11-15 | 雷勃美国公司 | Centrifugal pump assemblages and its assemble method with axial flux motor |
| CN110159539A (en) * | 2019-04-22 | 2019-08-23 | 江苏大学 | A kind of multistage pump based on permanent magnetism axial force adaptive equalization device |
| CN110701094A (en) * | 2019-10-16 | 2020-01-17 | 大连金石泵业有限公司 | Axial force balance magnetic device for pump |
| CN111396322A (en) * | 2020-04-20 | 2020-07-10 | 江苏威德凯泵业科技有限公司 | Suspension magnetic drive pump with self-adaptive adjustment of axial force of pump shaft |
| CN111946656A (en) * | 2020-08-31 | 2020-11-17 | 杭州大路实业有限公司 | Combined permanent magnetic suspension bearing for pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883065A (en) * | 2021-09-28 | 2022-01-04 | 晋江爱家制冷设备有限公司 | Double-rotor shielding motor |
| CN113883065B (en) * | 2021-09-28 | 2023-06-20 | 晋江爱家制冷设备有限公司 | Double-rotor shielding motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113187758B (en) | 2022-06-07 |
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