CN105020147A - Nearly-zero inner leakage stainless steel magnetic drive pump - Google Patents
Nearly-zero inner leakage stainless steel magnetic drive pump Download PDFInfo
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- CN105020147A CN105020147A CN201410148195.4A CN201410148195A CN105020147A CN 105020147 A CN105020147 A CN 105020147A CN 201410148195 A CN201410148195 A CN 201410148195A CN 105020147 A CN105020147 A CN 105020147A
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- ball
- bearing
- silicon nitride
- thrust washer
- impeller
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Abstract
The invention relates to a nearly-zero inner leakage stainless steel magnetic drive pump; a pump shaft and an impeller and inner and outer worm body walls are matched and mounted through a weight-carrying roller bearing, an axial ball bearing and a seal ring, thus reducing vibrations and noises caused by poor impeller dynamic balancing, effectively stopping axial floating of the pump shaft and the impeller, reducing friction heat, so the pump can do idle running in certain time period, and magnetic drive pump anti dry grinding performance can be enhanced; inner parts of a pump cavity are made of corrosion resisting material, thus improving magnetic drive pump corrosion resisting performance; a gap [delta] is kept in a seal ring friction pair outer circumference end face, so no friction heat is generated; on an seal ring friction pair inner circumference end face, slide friction is changed into rolling friction so as to reduce heat generated through friction; liquid flowing back from an impeller exit is thrown out along an oblique slot, and a little of remaining backflow fluid passes the seal ring friction pair inner circumference end face and re-thrown by a ball, thus increasing sealing effect, effectively preventing magnetic drive pump inner leakage, and improving magnetic drive pump work efficiency.
Description
Technical field
The present invention relates to a kind of magnetic drive pump, the stainless steel magnetic drive pump of particularly a kind of nearly zero internal leakage.
Background technique
Magnetic drive pump is different from traditional canned pump, motor crankshaft is not directly connected with pump shaft, but motor crankshaft drives outer magnet rotor to rotate, and outer magnet rotor and interior magnet rotor fit through magnetic force and drive interior magnet rotor to rotate, drive pump shaft to rotate by interior magnet rotor, make the vane rotor rotation work on pump shaft.The Seal cage that separation sleeve is formed is provided with between inner magnet rotor of magnetic drive pump and outer magnet rotor, pump shaft and interior magnet rotor are enclosed in Seal cage, one can avoid liquid by pump shaft end externally seepage, two can cool pump shaft and interior magnet rotor, therefore without the need to taking traditional dynamic seal (packing) just can obtain very excellent No leakage characteristic to pump shaft, thus be 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.Sliding bearing due to magnetic drive pump inner support pump shaft utilizes institute's course of conveying fluid to lubricate, and this process-liquid often lubricity is poor; Secondly, in production environment, often can run into liquid in pump and be evacuated or the situation such as liquid minimizing, can produce " no load running ", be commonly called as " dry grinding ", and " dry grinding " can make sliding bearing fast heating at short notice, and and wearing and tearing between pump shaft accelerate; In addition, the solid be dispersed in working fluid can produce potential bearing or the grinding of journal surface.The build-up effect of these times can cause bearing premature abrasion, and result causes pump shaft substantial deviation rotating center, and interior magnet rotor and separation sleeve rub, and it is rapidly that separation sleeve is worn out and produce high heat, cause dielectric leakage, the poisonous inflammable and explosive material that waits spreads, and even causes major disaster accident.
Simultaneously impeller due to material uneven, the accumulation of blank defect, machining error, assembly error etc., and the asymmetry geometrical shape etc. existed during design, make its non-uniform mass, form certain bias, when the impeller is rotated, produce unbalanced centrifugal inertia force, thus making pump produce vibration and noise, the bad expected service life that can reduce equipment of dynamic balancing, shows the earlier period damage of bearing especially, the maintenance period of shortening equipment, the maintenance cost of increase equipment, affects quality of product, aggravating working environment etc.
Get back to again the suction port of impeller from the highly pressurised liquid gap passed through between the impeller of rotation and fixed pump shell that impeller flows out, be called internal leakage.In order to reduce internal leakage, protection pump case, the housing corresponding with impeller eye place is equipped with dismountable seal ring.After seal wears, axial clearance is increased, the lifting rate of pump reduces, and pump work efficiency reduces, and when gap exceedes certain value, magnetic drive pump is without working efficiency.And rub between traditional seal ring friction pair, when carrying inflammable and explosive medium such as grade, there is severe compromise in producing heat.
Summary of the invention
In order to solve the problem that above-mentioned prior art is difficult to overcome, the invention provides a kind of stainless steel magnetic drive pump of nearly zero internal leakage, comprise pump shaft 7, impeller 2, interior magnet rotor 5, outer magnet rotor 6, , interior snail body wall 3, outer snail body wall 1, separation sleeve 4, first radial roller bearing 9, second radial roller bearing 11, axial ball bearing 10 and seal ring 8, 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 interior snail body wall 3 body seal, the material that separation sleeve 4 is selected is zirconium oxide, impeller 2 is arranged on pump shaft 7 axle head, outer snail body wall 1 is installed with being coordinated by the first radial roller bearing 9 and seal ring 8 between impeller 2, interior snail body wall 3 is coordinated with between pump shaft 7 installed by the second radial roller bearing 11, between impeller 2 and the second radial roller bearing 11, fitted shaft is installed to ball bearing 10, guiding gutter is had at pump shaft 7 and interior snail body wall 3, the magnetic drive pump of described structure can reduce due to the bad vibration & noise caused of impeller 2 dynamic balancing, and effectively can stop the axial float of pump shaft 7 and impeller 2, improve the security of operation of magnetic drive pump.
As a further improvement on the present invention, the material that described pump shaft 7 is selected is the one in silicon nitride, silicon carbide and gas Pressure Sintered Silicon Nitride, and the material that impeller 2 is selected is stainless steel.
As a further improvement on the present invention, described axial ball bearing 10 comprises annular retainer 22, ball 21, thrust washer 19, thrust washer 20, annular retainer 22 circumferentially evenly has multiple circular hole, ball 21 embeds in circular hole, thrust washer 19 and thrust washer 20 lay respectively at annular retainer 21 both sides, and thrust washer 19 and thrust washer 20 are circumferentially provided with ball grooves, and ball 21 embeds in ball grooves.
As a further improvement on the present invention, the ball grooves groove depth of described thrust washer 19 and thrust washer 20 and annular retainer 22 width sum are less than the diameter of ball 21, annular retainer 22 the selection of material is the one in silicon carbide, silicon nitride, zirconium oxide and ptfe composite, thrust washer 19 and thrust washer 20 the selection of material are the one of silicon carbide, silicon nitride and air pressure silicon nitride sintered material, and ball 21 the selection of material is gas Pressure Sintered Silicon Nitride.
As a further improvement on the present invention, described second radial roller bearing 11 comprises roller 14, slider 13, bearing outer ring 12, places roller 14, separated between roller 14 by slider 13 between bearing outer ring 12 and pump shaft 7.
As a further improvement on the present invention, the material that described roller 14, bearing outer ring 12 are selected is gas Pressure Sintered Silicon Nitride, and slider 13 the selection of material is the one in silicon carbide, silicon nitride, zirconium oxide and ptfe composite.
As a further improvement on the present invention, described first radial roller bearing 9 comprises roller 15, slider 16, and bearing inner race 18 and bearing outer ring 17, place roller 15 between bearing inner race 18 and bearing outer ring 17, separated between roller 15 by slider 16.
As a further improvement on the present invention, described roller 15, the material that bearing inner race 18 and bearing outer ring 17 are selected is gas Pressure Sintered Silicon Nitride, and the material that slider 16 is selected is the one in silicon carbide, silicon nitride, zirconium oxide and ptfe composite.
As a further improvement on the present invention, described seal ring 8 comprises rotating ring 24, stationary ring 23, valley gutter 25, ball 26, annular retainer 27, thrust washer 28, stationary ring 23 coordinates with outer snail body wall 1 to be installed, rotating ring 24 coordinates with impeller 2 to be installed, rotating ring 24 has a circular groove 30 at friction pair inner circumference end face, thrust washer 28 is put in circular groove 30, put into annular retainer 27 again, the circular hole 29 that annular retainer 27 is circumferentially evenly offered, the ball 26 that diameter is greater than annular retainer 27 width is embedded in circular hole 29, ball 26 diameter and thrust washer 28 width sum are greater than the degree of depth of circular groove 30, ensure to remain certain gap delta between rotating ring 24 and stationary ring 23 friction pair outer circumferential end face, rotating ring 24 evenly has multiple valley gutter 25 at friction pair outer circumferential end face.
As a further improvement on the present invention, described rotating ring 24, stationary ring 23 and annular retainer 27 the selection of material are the one in silicon carbide, silicon nitride, zirconium oxide and ptfe composite, thrust washer 28 the selection of material is the one of silicon carbide, silicon nitride and air pressure silicon nitride sintered material, ball 26 the selection of material is gas Pressure Sintered Silicon Nitride, valley gutter 25 grooved is triangle, valley gutter 25 included angle scope 0 ~ 90 °, and fluting direction is consistent with impeller 2 direction blade.
The invention has the beneficial effects as follows: this structure magnetic drive pump pump shaft 7, impeller 2 and outer snail body wall 1, by the first radial roller bearing 9 between interior snail body wall 3, second radial roller bearing 11, seal ring 8, axial ball bearing 10 coordinates to be installed, the bad vibration & noise caused of impeller 2 dynamic balancing can be reduced, the axial float of effective prevention pump shaft 7 and impeller 2, the first radial roller bearing 9 be made up of said structure and material, second radial roller bearing 11, the magnetic drive pump that seal ring 8 and axial ball bearing 10 support, substantially reduce surface friction drag, reduce the heat that friction generates, can the no load running when disappearance and the cutout of pumping liquid within a certain period of time, improve the anti-dry grinding performance of magnetic drive pump, add magnetic drive pump safety in operation, pump shaft 7 in pump chamber, impeller 2, first radial roller bearing 9, second radial roller bearing 11, what seal ring 8 and axial ball bearing 10 were selected is all resistant material, improve the decay resistance of magnetic drive pump, be thrown out of from the liquid of impeller 2 outlet return along valley gutter 25, the withdrawing fluid that minority is not thrown out of, when flowing through seal ring friction pair inner circumference end face, again thrown away by ball 26, thus add the sealing effect of seal ring 8, effectively prevent the internal leakage of magnetic drive pump, improve the working efficiency of magnetic drive pump.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Fig. 2 is the structural representation of axial ball bearing
Fig. 3 is the structural representation of the first radial roller bearing
Fig. 4 is the structural representation of the second radial roller bearing
Fig. 5 is the structural representation of seal ring
Fig. 6 is the front view of rotating ring
Embodiment
Embodiment: a kind of stainless steel magnetic drive pump of nearly zero internal leakage, comprise pump shaft 7, impeller 2, interior magnet rotor 5, outer magnet rotor 6, separation sleeve 4, interior snail body wall 3, outer snail body wall 1, first radial roller bearing 9, second radial roller bearing 11, seal ring 8 and axial ball bearing 10, 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, the material that separation sleeve is selected is zirconium oxide, separation sleeve 4 is fixedly connected with interior snail body wall 3 body seal, be fastenedly connected between outer snail body wall 1 and interior snail body wall 3, outer snail body wall 1, interior snail body wall 3 and separation sleeve 4 are closed and are formed pump chamber.During magnetic drive pump work, outer magnet rotor 6 is driven to rotate by external motivating force, outer magnet rotor 6 and interior magnet rotor 5 fit through magnetic force and drive interior magnet rotor 5 to rotate, interior magnet rotor 5 drives pump shaft 7 to rotate, impeller 2 is arranged on pump shaft 7 axle head, impeller 2 is along with pump shaft 7 together rotary work, and impeller 2 selects stainless steel material, and the impeller 2 that this kind of material is made has the obdurability in corrosion resistance, moldability, compatibility and wide range.
The outer snail body wall 1 of described magnetic drive pump is installed with being coordinated by the first radial roller bearing 9 and seal ring 8 between impeller 2, interior snail body wall 3 is coordinated with between pump shaft 7 installed by the second radial roller bearing 11, between impeller 2 and the second radial roller bearing 11, fitted shaft is installed to ball bearing 10, this kind coordinates to be installed, vibration and the noise of the bad generation of impeller 2 dynamic balancing can be reduced, effectively can stop the axial float of pump shaft 7 and impeller 2, improve the security of operation of magnetic drive pump.Have guiding gutter at pump shaft 7 and interior snail body wall 3, from the highly pressurised liquid that impeller 2 throws away, the guiding gutter on interior snail body wall 3 flows into, and cools inside and outside magnet coupler and pump shaft 7, flows into impeller 2 entrance negative pressure district by the guiding gutter on pump shaft 7.
The material that described pump shaft 7 is selected is the one in silicon nitride, silicon carbide and gas Pressure Sintered Silicon Nitride, and pump shaft 7 should be able to bear the load such as moment of torsion, moment of flexure, and the pump shaft 7 that described material is made is wear-resisting, corrosion resistant, heatproof, comprehensive mechanical performance are good.
Described axial ball bearing 10 comprises annular retainer 22, ball 21, thrust washer 19, thrust washer 20, annular retainer 22 circumferentially evenly has multiple circular hole, ball 21 embeds in circular hole, and thrust washer 19 and thrust washer 20 lay respectively at annular retainer 22 both sides, and thrust washer 19 and thrust washer 20 are circumferentially provided with ball grooves, ball 21 embeds in ball grooves, thrust washer 19 and between thrust washer 20 and ball 21 for rolling friction, surface friction drag is little, and the heat that friction generates is few.
The ball grooves groove depth of described thrust washer 19 and thrust washer 20 and annular retainer 22 width sum are less than the diameter of ball 21, annular retainer 22 the selection of material is the one in silicon carbide, silicon nitride, zirconium oxide and ptfe composite, thrust washer 19, thrust washer 20 the selection of material is the one of silicon carbide, silicon nitride and air pressure silicon nitride sintered material, and ball 21 the selection of material is gas Pressure Sintered Silicon Nitride.Axial ball bearing 10 corrosion resistant, wear-resisting property that described material is made are good, the more important thing is that its cold-hot impact, self lubricity and comprehensive mechanical performance are good especially, not fragile, long service life.
Described second radial roller bearing 11 comprises roller 14, slider 13, bearing outer ring 12, places roller 14, separated between roller 14 by slider 13 between bearing outer ring 12 and pump shaft 7.Described slider 13 avoids the friction between roller 14, substantially reduce surface friction drag, reduce friction producing heat, can the no load running when disappearance and the cutout of pumping liquid within a certain period of time, enhance the anti-dry grinding performance of magnetic drive pump, the dense degree that roller 14 is placed regulates according to load by slider 13, more flexible compared with the retainer structure adopted in prior art, practical, thrust washer 20 and interior snail body wall 3 can prevent roller 14 and slider 13 at the play of magnetic drive pump run duration, slider 13 the selection of material is silicon carbide, silicon nitride, one in zirconium oxide and ptfe composite, roller 14, bearing outer ring 12 all selects gas Pressure Sintered Silicon Nitride material, the radial roller bearing 11 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 good especially, not fragile, long service life.
Described first radial roller bearing 9 comprises roller 15, slider 16, and bearing inner race 18 and bearing outer ring 17, place roller 15 between bearing inner race 18 and bearing outer ring 17, separated between roller 15 by slider 16.Described slider 16 avoids the friction between roller 15, substantially reduce surface friction drag, reduce friction producing heat, can the no load running when disappearance and the cutout of pumping liquid within a certain period of time, enhance the anti-dry grinding performance of magnetic drive pump, the dense degree that roller 15 is placed regulates according to load by slider 16, more flexible compared with the retainer structure adopted in prior art, practical, impeller 2 and outer snail body wall 1 can prevent roller 15 and slider 16 at the play of magnetic drive pump run duration, described roller 15, the material that bearing inner race 18 and bearing outer ring 17 are selected is gas Pressure Sintered Silicon Nitride, the material that slider 16 is selected is silicon carbide, silicon nitride, one in zirconium oxide and ptfe composite, the radial roller bearing 9 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 good especially, not fragile, long service life.
Described seal ring 8 comprises rotating ring 24, stationary ring 23, valley gutter 25, ball 26, annular retainer 27, thrust washer 28, stationary ring 23 coordinates with outer snail body wall 1 to be installed, rotating ring 24 coordinates with impeller 2 to be installed, rotating ring 24 has a circular groove 30 at friction pair inner circumference end face, thrust washer 28 is put in circular groove 30, put into annular retainer 27 again, the circular hole 29 that annular retainer 27 is circumferentially evenly offered, the ball 26 that diameter is greater than annular retainer 27 width is embedded in circular hole 29, ball 26 diameter and thrust washer 28 width sum are greater than the degree of depth of circular groove 30, ensure that seal ring 8 is the close contacts between the friction pair inner circumference end face of stationary ring 23 and ball 26 sphere, certain gap delta is remained between rotating ring 24 and stationary ring 23 friction pair outer circumferential end face, this gap delta fundamentally avoids the friction between rotating ring 24 and stationary ring 23 friction pair outer circumferential end face, and realize the rolling friction between rotating ring 24 and stationary ring 23 friction pair inner circumference end face by ball 26, contacted by original rubbing surface and change Points And lines contact into, seal ring 8 substantially reduces surface friction drag, reduce friction producing heat, increase the service life, rotating ring 24 evenly has multiple valley gutter 25 at friction pair outer circumferential end face, valley gutter 25 grooved is triangle, this grooved technique is simple, easy realization, valley gutter 25 included angle scope 0 ~ 90 °, fluting direction is consistent with impeller 2 direction blade, when impeller 2 rotates with pump shaft 7, from the liquid of impeller 2 outlet return because High Rotation Speed obtains centrifugal force, and be thrown out of along valley gutter 25, effectively prevent the internal leakage of magnetic drive pump, the withdrawing fluid that minority is not thrown out of, through seal ring 8 friction pair inner circumference end face, again thrown away by the ball 26 rotated together along with impeller 2, thus add the sealing effect of seal ring 8, considerably reduce the internal leakage of magnetic drive pump, improve the working efficiency of magnetic drive pump.
Described rotating ring 24, stationary ring 23, the material that annular retainer 27 is selected is silicon carbide, silicon nitride, one in zirconium oxide and ptfe composite, the material wear-resistant selected, corrosion resistant, heatproof, comprehensive mechanical performance is good, described thrust washer 28 the selection of material is silicon carbide, the one of silicon nitride and air pressure silicon nitride sintered material, the material corrosion resistant selected, wear resistance performance is good, ball 26 is gas Pressure Sintered Silicon Nitride ball, ball 26 corrosion resistant of this kind of materials for support, wear-resisting property is good, the more important thing is its cold-hot impact, self lubricity and comprehensive mechanical performance are good especially, not fragile, guarantee that ball 26 can Long-Time Service.
Above-described embodiment is only for illustrating technical conceive of the present invention and feature; its object is to person skilled in the art can be understood content of the present invention and be implemented; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (10)
1. the stainless steel magnetic drive pump of nearly zero internal leakage, comprise pump shaft 7, impeller 2, interior magnet rotor 5, outer magnet rotor 6, , interior snail body wall 3, outer snail body wall 1, separation sleeve 4, first radial roller bearing 9, second radial roller bearing 11, axial ball bearing 10 and seal ring 8, 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 interior snail body wall 3 body seal, the material that separation sleeve 4 is selected is zirconium oxide, impeller 2 is arranged on pump shaft 7 axle head, outer snail body wall 1 is installed with being coordinated by the first radial roller bearing 9 and seal ring 8 between impeller 2, interior snail body wall 3 is coordinated with between pump shaft 7 installed by the second radial roller bearing 11, between impeller 2 and the second radial roller bearing 11, fitted shaft is installed to ball bearing 10, guiding gutter is had at pump shaft 7 and interior snail body wall 3.
2. magnetic drive pump according to claim 1, is characterized in that: the material that described pump shaft 7 is selected is the one in silicon nitride, silicon carbide and gas Pressure Sintered Silicon Nitride, and the material that impeller 2 is selected is stainless steel.
3. magnetic drive pump according to claim 1, it is characterized in that: described axial ball bearing 10 comprises annular retainer 22, ball 21, thrust washer 19, thrust washer 20, annular retainer 22 circumferentially evenly has multiple circular hole, ball 21 embeds in circular hole, thrust washer 19 and thrust washer 20 lay respectively at annular retainer 22 both sides, and thrust washer 19 and thrust washer 20 are circumferentially provided with ball grooves, and ball 21 embeds in ball grooves.
4. axial ball bearing 10 according to claim 3, it is characterized in that: the ball grooves groove depth of described thrust washer 19 and thrust washer 20 and annular retainer 22 width sum are less than the diameter of ball 21, annular retainer 22 the selection of material is the one in silicon carbide, silicon nitride, zirconium oxide and ptfe composite, thrust washer 19 and thrust washer 20 the selection of material are the one of silicon carbide, silicon nitride and air pressure silicon nitride sintered material, and ball 21 the selection of material is gas Pressure Sintered Silicon Nitride.
5. magnetic drive pump according to claim 1, is characterized in that: described second radial roller bearing 11 comprises roller 14, slider 13, bearing outer ring 12, places roller 14, separated between roller 14 by slider 13 between bearing outer ring 12 and pump shaft 7.
6. the second radial roller bearing 11 according to claim 5, it is characterized in that: the material that described roller 14, bearing outer ring 12 are selected is gas Pressure Sintered Silicon Nitride, slider 13 the selection of material is the one in silicon carbide, silicon nitride, zirconium oxide and ptfe composite.
7. magnetic drive pump according to claim 1, it is characterized in that: described first radial roller bearing 9 comprises roller 15, slider 16, bearing inner race 18 and bearing outer ring 17, place roller 15 between bearing inner race 18 and bearing outer ring 17, separated between roller 15 by slider 16.
8. the first radial roller bearing 9 according to claim 7, it is characterized in that: described roller 15, the material that bearing inner race 18 and bearing outer ring 17 are selected is gas Pressure Sintered Silicon Nitride, and the material that slider 16 is selected is the one in silicon carbide, silicon nitride, zirconium oxide and ptfe composite.
9. magnetic drive pump according to claim 1, it is characterized in that: described seal ring 8 comprises rotating ring 24, stationary ring 23, valley gutter 25, ball 26, annular retainer 27, thrust washer 28, stationary ring 23 coordinates with outer snail body wall 1 to be installed, rotating ring 24 coordinates with impeller 2 to be installed, rotating ring 24 has a circular groove 30 at friction pair inner circumference end face, thrust washer 28 is put in circular groove 30, put into annular retainer 27 again, annular retainer 27 circumferentially evenly has multiple circular hole 29, the ball 26 that diameter is greater than annular retainer 27 width is embedded in circular hole 29, ball 26 diameter and thrust washer 28 width sum are greater than the degree of depth of circular groove 30, ensure to remain certain gap delta between rotating ring 24 and stationary ring 23 friction pair outer circumferential end face, rotating ring 24 evenly has multiple valley gutter 25 at friction pair outer circumferential end face.
10. seal ring 8 according to claim 9, it is characterized in that: described rotating ring 24, stationary ring 23, annular retainer 27 the selection of material is the one in silicon carbide, silicon nitride, zirconium oxide and ptfe composite, thrust washer 28 the selection of material is the one of silicon carbide, silicon nitride and air pressure silicon nitride sintered material, ball 26 the selection of material is gas Pressure Sintered Silicon Nitride, valley gutter 25 grooved is triangle, valley gutter 25 included angle scope 0 ~ 90 °, fluting direction is consistent with impeller 2 direction blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410148195.4A CN105020147A (en) | 2014-04-15 | 2014-04-15 | Nearly-zero inner leakage stainless steel magnetic drive pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410148195.4A CN105020147A (en) | 2014-04-15 | 2014-04-15 | Nearly-zero inner leakage stainless steel magnetic drive pump |
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| Publication Number | Publication Date |
|---|---|
| CN105020147A true CN105020147A (en) | 2015-11-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410148195.4A Pending CN105020147A (en) | 2014-04-15 | 2014-04-15 | Nearly-zero inner leakage stainless steel magnetic drive pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN105020147A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108214023A (en) * | 2018-01-22 | 2018-06-29 | 中信戴卡股份有限公司 | A set of fixture for solving outer rim shake knife |
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| CN2076175U (en) * | 1990-05-09 | 1991-05-01 | 上海市化工轻工供应公司 | Large-power magnetically driving pump |
| JP2007092983A (en) * | 2005-09-01 | 2007-04-12 | Ntn Corp | Roller bearing |
| DE202007003214U1 (en) * | 2007-02-22 | 2007-05-10 | Renner Gmbh | Magnetically coupled centrifugal pump for pumping e.g. corrosive media, has permanent magnets in hub arranged in section of rotor surrounded by mantle of can, where surfaces encountering in pump space with medium are non-metallic |
| CN201661502U (en) * | 2009-12-11 | 2010-12-01 | 上海邦浦实业集团有限公司 | Bearing configuration for diving sewage pump |
| CN202108764U (en) * | 2011-06-28 | 2012-01-11 | 瑞安市万路达汽车部件有限公司 | Automobile engine cooling pump |
| CN103291648A (en) * | 2013-06-18 | 2013-09-11 | 安徽盛唐泵阀制造有限公司 | Magnetic drive pump |
| CN203430986U (en) * | 2013-06-24 | 2014-02-12 | 高涵文 | Corrosion-resistant axial ball bearing |
| CN203476784U (en) * | 2013-05-24 | 2014-03-12 | 高涵文 | Sealing ring with improved structure |
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2014
- 2014-04-15 CN CN201410148195.4A patent/CN105020147A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2076175U (en) * | 1990-05-09 | 1991-05-01 | 上海市化工轻工供应公司 | Large-power magnetically driving pump |
| JP2007092983A (en) * | 2005-09-01 | 2007-04-12 | Ntn Corp | Roller bearing |
| DE202007003214U1 (en) * | 2007-02-22 | 2007-05-10 | Renner Gmbh | Magnetically coupled centrifugal pump for pumping e.g. corrosive media, has permanent magnets in hub arranged in section of rotor surrounded by mantle of can, where surfaces encountering in pump space with medium are non-metallic |
| CN201661502U (en) * | 2009-12-11 | 2010-12-01 | 上海邦浦实业集团有限公司 | Bearing configuration for diving sewage pump |
| CN202108764U (en) * | 2011-06-28 | 2012-01-11 | 瑞安市万路达汽车部件有限公司 | Automobile engine cooling pump |
| CN203476784U (en) * | 2013-05-24 | 2014-03-12 | 高涵文 | Sealing ring with improved structure |
| CN103291648A (en) * | 2013-06-18 | 2013-09-11 | 安徽盛唐泵阀制造有限公司 | Magnetic drive pump |
| CN203430986U (en) * | 2013-06-24 | 2014-02-12 | 高涵文 | Corrosion-resistant axial ball bearing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108214023A (en) * | 2018-01-22 | 2018-06-29 | 中信戴卡股份有限公司 | A set of fixture for solving outer rim shake knife |
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Application publication date: 20151104 |