CN106286316A - The magnetic drive pump that a kind of structure is improved - Google Patents
The magnetic drive pump that a kind of structure is improved Download PDFInfo
- Publication number
- CN106286316A CN106286316A CN201510289478.5A CN201510289478A CN106286316A CN 106286316 A CN106286316 A CN 106286316A CN 201510289478 A CN201510289478 A CN 201510289478A CN 106286316 A CN106286316 A CN 106286316A
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- pump
- bearing
- magnet rotor
- impeller
- magnetic drive
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- 239000000463 material Substances 0.000 claims abstract description 45
- 238000009434 installation Methods 0.000 claims abstract description 9
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 24
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 24
- 238000000926 separation method Methods 0.000 claims description 19
- 238000005096 rolling process Methods 0.000 claims description 14
- 229910010293 ceramic material Inorganic materials 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 12
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 2
- 229950000845 politef Drugs 0.000 claims 1
- 239000002023 wood Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 5
- 238000009837 dry grinding Methods 0.000 abstract description 4
- 230000008034 disappearance Effects 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 229920002313 fluoropolymer Polymers 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to the magnetic drive pump that a kind of structure is improved, pump shaft (7) and impeller (2) pass through the first radial contact bearing (9) in pump chamber, second radial contact bearing (11), second axial ball bearing (10) supports installs, installation the first axial ball bearing (8) is coordinated between pump chamber inwall with interior magnet rotor (5), the dynamic balancing that the magnetic drive pump of this structure can effectively control impeller (2) is bad, effectively control pump shaft (7) and the axial float of impeller (2), it is greatly reduced the heat that friction generates, can within a certain period of time pumping liquid disappearance and cutout in the case of dry run, enhance the anti-dry grinding performance of magnetic drive pump, improve the operation safety of magnetic drive pump, pump chamber inner part all selects resistant material to make, improve the decay resistance of magnetic drive pump.
Description
Technical field
The present invention relates to a kind of magnetic drive pump, the magnetic drive pump that a kind of structure is improved.
Background technology
Magnetic drive pump is different from traditional canned pump, motor crankshaft is not joined directly together with pump shaft, but motor crankshaft drives outer magnet rotor to rotate, and outer magnet rotor and interior magnet rotor fit through magnet rotor in magnetic force drives and rotate, driven pump shaft to rotate by interior magnet rotor, make the vane rotor rotation work on pump shaft.The annular seal space that separation sleeve is formed it is provided with between inner magnet rotor of magnetic drive pump and outer magnet rotor, pump shaft and interior magnet rotor are enclosed in annular seal space, one can avoid liquid by pump shaft end to outboard leak, pump shaft and interior magnet rotor can be cooled down by two, therefore without pump shaft is taked traditional dynamic seal (packing) be obtained with the most excellent No leakage characteristic, thus it is widely used in carrying various severe toxicity, the danger medium such as inflammable, explosive, play important function in fields such as oil, chemical industry, medicine, nuclear power, national defence.Owing to the sliding bearing of magnetic drive pump inner support pump shaft utilizes institute's course of conveying fluid to be lubricated, this process fluid often lubricity is poor；Secondly in production environment, be frequently encountered liquid in pump and be evacuated or the situation such as liquid minimizing, can produce " dry run ", be commonly called as " dry grinding ", and " dry grinding " can make sliding bearing fast heating at short notice, and and pump shaft between abrasion acceleration；Additionally, the solid being dispersed in working fluid can produce the grinding of potential bearing or journal surface.The build-up effect of these times can cause bearing premature abrasion, and result causes pump shaft substantial deviation center of rotation, and interior magnet rotor rubs with separation sleeve, and rapidly by worn out for separation sleeve and produce high heat, cause dielectric leakage, poisonous inflammable and explosive material diffusion such as grade, even cause major disaster accident.
Impeller is uneven due to material, the accumulation of blank defect, machining error, rigging error etc., and the asymmetry geometry etc. existed during design, make its non-uniform mass, form certain bias, when the impeller is rotated, produce unbalanced centrifugal intertia force, so that pump produces vibration and noise, the bad expected service life that can reduce equipment of dynamic balancing, show the earlier period damage of bearing especially, the maintenance period of shortening equipment, the maintenance cost of increase equipment, affects product quality, aggravating working environment etc..
Summary of the invention
In order to solve the problem that above-mentioned prior art is difficult to overcome, the invention provides the magnetic drive pump that a kind of structure is improved, including the pump housing 1, pump cover 3, pump shaft 7, impeller 2, interior magnet rotor 5, outer magnet rotor 6, separation sleeve 4, interior magnet rotor 5 is fixedly mounted on pump shaft 7 axle head, outer magnet rotor 6 is arranged on motor shaft end, between interior magnet rotor 5 and outer magnet rotor 6, separation sleeve 4 is set, separation sleeve 4 is fixedly connected with pump cover 3 body seal, the described pump housing 1, pump cover 3 and separation sleeve 4 are connected into entirety, the pump chamber that composition is closed, it is characterized in that: between the pump housing 1 inwall and impeller 2, coordinate installation the first radial contact bearing 9, pump shaft 7 is supported by the second axial ball bearing 10 and the second radial contact bearing 11 and is installed in pump chamber, installation the first axial ball bearing 8 is coordinated between pump chamber inwall with interior magnet rotor 5.
As a further improvement on the present invention, described impeller 2 has impeller groove 21 near the pump housing 1 inwall side, and the pump housing 1 inwall has pump housing groove 31, coordinates and install the first radial contact bearing 9 between impeller groove 21 and pump housing groove 31.
As a further improvement on the present invention, described first radial contact bearing 9 includes rolling element 14, slider 15, bearing inner race 16, bearing outer ring 17, described second radial contact bearing 11 includes rolling element 24, slider 25, bearing inner race 26, bearing outer ring 27, the material that described rolling element 14 and 24 is selected is gas Pressure Sintered Silicon Nitride, one in hot-isostatic pressure silicon nitride and isostatic cool pressing silicon nitride material, bearing inner race 16, 26 and bearing outer ring 17, 27 materials selected are the one in ceramic material and ptfe composite, slider 15 and 25 the selection of material is ceramic material, one in rustless steel and ptfe composite.
As a further improvement on the present invention, described first axial ball bearing 8 includes annular retainer 18, ball 20, thrust ring 19 and 33, described second axial ball bearing 10 includes annular retainer 28, ball 30, thrust ring 29 and 32, described annular retainer 18 and 28 the selection of material is the one in ceramic material, rustless steel and ptfe composite, thrust ring 19,29,32 and 33 Ceramics material, ball 20 and 30 the selection of material is the one in gas Pressure Sintered Silicon Nitride, hot-isostatic pressure silicon nitride and isostatic cool pressing silicon nitride material.
nullThe invention has the beneficial effects as follows: magnetic drive pump pump shaft 7 and impeller 2 pass through the first radial contact bearing 9 in pump chamber、Second radial contact bearing 11、Second axial ball bearing 10 supports to be installed，Installation the first axial ball bearing 8 is coordinated between pump chamber inwall with interior magnet rotor 5，The dynamic balancing that the magnetic drive pump of this structure can effectively control impeller 2 is bad，Effectively control the axial float of pump shaft 7 impeller 2，It is greatly reduced the heat that friction generates，Can dry run in the case of the disappearance and cutout of pumping liquid within a certain period of time，Enhance the anti-dry grinding performance of magnetic drive pump，Improve the operation safety of magnetic drive pump，Pump shaft 7 in pump chamber、Impeller 2、First radial contact bearing 9、Second radial contact bearing 11，What the first axial ball bearing 8 and the second axial ball bearing 10 were selected is all that resistant material is made，Improve the decay resistance of magnetic drive pump.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the first radial contact bearing 9 sectional view.
Fig. 3 is the second radial contact bearing 11 sectional view.
Detailed description of the invention
nullEmbodiment one: the magnetic drive pump that a kind of structure is improved，Including the pump housing 1、Pump cover 3、Pump shaft 7、Impeller 2、Interior magnet rotor 5、Outer magnet rotor 6 and separation sleeve 4，Interior magnet rotor 5 is fixedly mounted on pump shaft 7 axle head，Outer magnet rotor 6 is arranged on motor shaft end，Between interior magnet rotor 5 and outer magnet rotor 6, separation sleeve 4 is set，Separation sleeve 4 and the fixing connection of pump cover 3 body seal，It is fastenedly connected between the pump housing 1 and pump cover 3，The pump housing 1、Pump cover 3、Separation sleeve 4 is closed and is formed pump chamber，During magnetic drive pump work，Outer magnet rotor 6 is driven to rotate by external motivating force，In being driven by magnetic force between outer magnet rotor 6 and interior magnet rotor 5, magnet rotor 5 rotates，Interior magnet rotor 5 drives pump shaft 7 to rotate，Impeller 2 is installed on pump shaft 7 by key and keyway，Impeller 2 rotates together with work along with pump shaft 7，Pump shaft 7 and impeller 2 all select stainless steel material，Pump shaft 7 and impeller 2 that this kind of material is made have corrosion resistance、Mouldability、Obdurability in the compatibility and wide range.
Installation the first radial contact bearing 9 is coordinated between the described magnetic drive pump pump housing 1 inwall and impeller 2, pump shaft 7 is supported by the second axial ball bearing 10 and the second radial contact bearing 11 and is installed in pump chamber, installation the first axial ball bearing 8 is coordinated between pump chamber inwall with interior magnet rotor 5, the dynamic balancing that the magnetic drive pump of this structure can effectively control impeller 2 is bad, effectively control the axial float of pump shaft 7 impeller 2, improve the operation safety of magnetic drive pump
Described impeller 2 has impeller groove 21 near the pump housing 1 inwall side, and the pump housing 1 inwall has pump housing groove 31, coordinates and install the first radial contact bearing 9 between impeller groove 21 and pump housing groove 31.
nullDescribed first radial contact bearing 9 includes rolling element 14，Slider 15，Bearing inner race 16，Bearing outer ring 17，Described second radial contact bearing 11 includes rolling element 24，Slider 25，Bearing inner race 26，Bearing outer ring 27，Described rolling element 14 and 24 can be roller or ball，It is provided with cushion collar 13 between bearing inner race 16 and pump housing groove 31 counterface，Bearing outer ring 17 and impeller groove 21 end face are provided with cushion collar 12，Cushion collar 23 it is provided with between bearing inner race 26 and pump shaft 7，Cushion collar 22 it is provided with between bearing outer ring 27 and pump chamber inwall，It is possible to prevent that the thermal expansion because causing when medium temperature is too high is countershaft manufactures into damage，The material that rolling element 14 and 24 is selected is gas Pressure Sintered Silicon Nitride、One in hot-isostatic pressure silicon nitride and isostatic cool pressing silicon nitride material，Bearing inner race 16、26 and bearing outer ring 17、27 materials selected are the one in ceramic material and ptfe composite，Slider 15 and 25 the selection of material is ceramic material、One in rustless steel and ptfe composite，The radial contact bearing that described material is made，Wear-resisting、Corrosion resistant performance is good，The more important thing is its cold-hot impact、Self lubricity and comprehensive mechanical performance are especially good，It is hardly damaged，Service life is long.
Described first axial ball bearing 8 includes annular retainer 18, ball 20, thrust ring 19 and 33, described second axial ball bearing 10 includes annular retainer 28, ball 30, thrust ring 29 and 32, described annular retainer 18 and 28 the selection of material is ceramic material, one in rustless steel and ptfe composite, thrust ring 19, 29, 32 and 33 Ceramics materials, ball 20 and 30 the selection of material is gas Pressure Sintered Silicon Nitride, one in hot-isostatic pressure silicon nitride and isostatic cool pressing silicon nitride material, the axial ball bearing corrosion resistant that described material is made, anti-wear performance is good, the more important thing is its cold-hot impact, self lubricity and comprehensive mechanical performance are especially good, it is hardly damaged, service life is long.
nullEmbodiment two: the magnetic drive pump that a kind of structure is improved，Including the pump housing 1、Pump cover 3、Pump shaft 7、Impeller 2、Interior magnet rotor 5、Outer magnet rotor 6 and separation sleeve 4，Interior magnet rotor 5 is fixedly mounted on pump shaft 7 axle head，Outer magnet rotor 6 is arranged on motor shaft end，Between interior magnet rotor 5 and outer magnet rotor 6, separation sleeve 4 is set，Separation sleeve 4 and the fixing connection of pump cover 3 body seal，It is fastenedly connected between the pump housing 1 and pump cover 3，The pump housing 1、Pump cover 3、Separation sleeve 4 is closed and is formed pump chamber，During magnetic drive pump work，Outer magnet rotor 6 is driven to rotate by external motivating force，In being driven by magnetic force between outer magnet rotor 6 and interior magnet rotor 5, magnet rotor 5 rotates，Interior magnet rotor 5 drives pump shaft 7 to rotate，Impeller 2 is installed on pump shaft 7 by key and keyway，Impeller 2 rotates together with work along with pump shaft 7，Described pump shaft 7 Ceramics material，Pump shaft 7 should be able to bear moment of torsion、The loads such as moment of flexure，The pump shaft 7 that described material is made is wear-resisting、Corrosion resistant、Heatproof、Comprehensive mechanical performance is good.
Installation the first radial contact bearing 9 is coordinated between the described magnetic drive pump pump housing 1 inwall and impeller 2, pump shaft 7 is supported by the second axial ball bearing 10 and the second radial contact bearing 11 and is installed in pump chamber, installation the first axial ball bearing 8 is coordinated between pump chamber inwall with interior magnet rotor 5, the magnetic drive pump of this structure can effectively control the bad vibration caused of dynamic balancing and the noise of impeller 2, effectively control the axial float of pump shaft 7 impeller 2, improve the operation safety of magnetic drive pump.
The described pump housing 1 and pump cover 3 are with metal shell inner lining fluoroplastics, described impeller 2 uses metal insert coated with fluoroplastic, there is excellent corrosion resistance and good rigidity, and energy impact resistance, vibration resistance and warp resistance, described impeller 2 has impeller groove 21 near the pump housing 1 inwall side, the pump housing 1 inwall has pump housing groove 31, coordinates and install the first radial contact bearing 9 between impeller groove 21 and pump housing groove 31.
nullDescribed first radial contact bearing 9 includes rolling element 14，Slider 15，Bearing inner race 16，Bearing outer ring 17，Described second radial contact bearing 11 includes rolling element 24，Slider 25，Bearing inner race 26，Bearing outer ring 27，Described rolling element 14 and 24 can be roller or ball，The material that rolling element 14 and 24 is selected is gas Pressure Sintered Silicon Nitride、One in hot-isostatic pressure silicon nitride and isostatic cool pressing silicon nitride material，Bearing inner race 16、26 and bearing outer ring 17、27 materials selected are the one in ceramic material and ptfe composite，Slider 15 and 25 the selection of material is ceramic material、One in rustless steel and ptfe composite，The radial contact bearing that described material is made，Wear-resisting、Corrosion resistant performance is good，The more important thing is its cold-hot impact、Self lubricity and comprehensive mechanical performance are especially good，It is hardly damaged，Service life is long.
Described first axial ball bearing 8 includes annular retainer 18, ball 20, thrust ring 19 and 33, described second axial ball bearing 10 includes annular retainer 28, ball 30, thrust ring 29 and 32, described annular retainer 18 and 28 the selection of material is ceramic material, one in rustless steel and ptfe composite, thrust ring 19, 29, 32 and 33 Ceramics materials, ball 20 and 30 the selection of material is gas Pressure Sintered Silicon Nitride, one in hot-isostatic pressure silicon nitride and isostatic cool pressing silicon nitride material, the axial ball bearing corrosion resistant that described material is made, anti-wear performance is good, the more important thing is its cold-hot impact, self lubricity and comprehensive mechanical performance are especially good, it is hardly damaged, service life is long.
Above-described embodiment is only for technology design and the feature of the explanation present invention; its object is to allow person skilled in the art will appreciate that present disclosure and to be carried out; can not limit the scope of the invention with this; all equivalence changes made according to spirit of the invention or modification, all should contain within the scope of the present invention.
Claims (4)
1. structure improve a magnetic drive pump, including the pump housing (1), pump cover (3), pump shaft (7), impeller (2), interior magnet rotor (5), outer magnet rotor (6),
Separation sleeve (4), interior magnet rotor (5) is fixedly mounted on pump shaft (7) axle head, and outer magnet rotor (6) is arranged on motor shaft end, at interior magnet rotor
(5) and arranging separation sleeve (4) between outer magnet rotor (6), separation sleeve (4) is fixing with pump cover (3) body seal to be connected, the described pump housing (1),
Pump cover (3) and separation sleeve (4) are connected into entirety, the pump chamber that composition is closed, it is characterised in that: join between the pump housing (1) inwall and impeller (2)
Closing and install the first radial contact bearing (9), pump shaft (7) supports peace by the second axial ball bearing (10) and the second radial contact bearing (11)
It is loaded in pump chamber, between pump chamber inwall with interior magnet rotor (5), coordinates installation the first axial ball bearing (8).
Magnetic drive pump the most according to claim 1, it is characterised in that: described impeller (2) has impeller groove (21) near the pump housing (1) inwall side. pump
Body (1) inwall has pump housing groove (31), coordinates and install the first radial contact bearing (9) between impeller groove (21) and pump housing groove (31).
Magnetic drive pump the most according to claim 1, it is characterised in that: described first radial contact bearing (9) includes rolling element (14), slider (15),
Bearing inner race (16), bearing outer ring (17), described second radial contact bearing (11) includes rolling element (24), and slider (25), in bearing
Circle (26), bearing outer ring (27), the material that described rolling element (14) and (24) are selected be gas Pressure Sintered Silicon Nitride, hot-isostatic pressure silicon nitride and
One in isostatic cool pressing silicon nitride material, the material that bearing inner race (16), (26) and bearing outer ring (17), (27) are selected be ceramic material and
One in ptfe composite, slider (15) and (25) the selection of material are ceramic material, rustless steel and politef composite wood
One in material.
Magnetic drive pump the most according to claim 1, it is characterised in that: the described first axial ball bearing (8) includes annular retainer (18), ball (20),
Thrust ring (19) and (33), the described second axial ball bearing (10) includes annular retainer (28), ball (30), thrust ring (29) and
(32), described annular retainer (18) and (28) the selection of material are the one in ceramic material, rustless steel and ptfe composite,
Thrust ring (19), (29), (32) and (33) Ceramics material, ball (20) and (30) the selection of material are gas Pressure Sintered Silicon Nitride, heat
One in isostatic pressed silicon nitride and isostatic cool pressing silicon nitride material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510289478.5A CN106286316A (en) | 2015-05-28 | 2015-05-28 | The magnetic drive pump that a kind of structure is improved |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510289478.5A CN106286316A (en) | 2015-05-28 | 2015-05-28 | The magnetic drive pump that a kind of structure is improved |
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| Publication Number | Publication Date |
|---|---|
| CN106286316A true CN106286316A (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510289478.5A Pending CN106286316A (en) | 2015-05-28 | 2015-05-28 | The magnetic drive pump that a kind of structure is improved |
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| Country | Link |
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| CN (1) | CN106286316A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561316A (en) * | 2018-06-01 | 2018-09-21 | 昆明理工大学 | A kind of centrifugal pump of horizontal axis of configuration air hydrodynamic bearing |
| CN114001035A (en) * | 2021-10-19 | 2022-02-01 | 宁波得利时泵业有限公司 | a magnetic pump |
| CN114033704A (en) * | 2021-10-20 | 2022-02-11 | 安徽银龙泵阀股份有限公司 | Corrosion-resistant and dry-grinding-resistant magnetic pump |
| CN116783368A (en) * | 2020-11-27 | 2023-09-19 | 克里米昂股份公司 | Turbine and turbine generator assembly with magnetic coupling |
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| CN203308765U (en) * | 2013-06-27 | 2013-11-27 | 李瑞静 | Magnetic drive pump capable of preventing demagnetization |
| CN203670229U (en) * | 2014-01-14 | 2014-06-25 | 高涵文 | Magnetic drive pump resistant to corrosion and dry grinding |
| CN203822685U (en) * | 2014-04-15 | 2014-09-10 | 高涵文 | Fluoroplastic magnetic drive pump capable of approximate zero inner leakage |
| CN204663906U (en) * | 2015-05-28 | 2015-09-23 | 昆山江津长抗干磨磁力泵有限公司 | A kind of magnetic drive pump of architecture advances |
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2015
- 2015-05-28 CN CN201510289478.5A patent/CN106286316A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4871301A (en) * | 1988-02-29 | 1989-10-03 | Ingersoll-Rand Company | Centrifugal pump bearing arrangement |
| CN2040177U (en) * | 1988-11-09 | 1989-06-28 | 航空工业部第六○九研究所 | Nonleakage and anticorrosive chemical pump |
| CN201982312U (en) * | 2011-03-23 | 2011-09-21 | 王友宏 | Metal magnetic pump |
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| CN203822685U (en) * | 2014-04-15 | 2014-09-10 | 高涵文 | Fluoroplastic magnetic drive pump capable of approximate zero inner leakage |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561316A (en) * | 2018-06-01 | 2018-09-21 | 昆明理工大学 | A kind of centrifugal pump of horizontal axis of configuration air hydrodynamic bearing |
| CN108561316B (en) * | 2018-06-01 | 2023-09-26 | 昆明理工大学 | Horizontal centrifugal pump with air dynamic pressure bearing |
| CN116783368A (en) * | 2020-11-27 | 2023-09-19 | 克里米昂股份公司 | Turbine and turbine generator assembly with magnetic coupling |
| CN114001035A (en) * | 2021-10-19 | 2022-02-01 | 宁波得利时泵业有限公司 | a magnetic pump |
| CN114033704A (en) * | 2021-10-20 | 2022-02-11 | 安徽银龙泵阀股份有限公司 | Corrosion-resistant and dry-grinding-resistant magnetic pump |
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Application publication date: 20170104 |