CN104776033B - A kind of magnetic drive pump of corrosion-resistant anti-dry grinding - Google Patents
A kind of magnetic drive pump of corrosion-resistant anti-dry grinding Download PDFInfo
- Publication number
- CN104776033B CN104776033B CN201410016266.5A CN201410016266A CN104776033B CN 104776033 B CN104776033 B CN 104776033B CN 201410016266 A CN201410016266 A CN 201410016266A CN 104776033 B CN104776033 B CN 104776033B
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- Prior art keywords
- bearing
- impeller
- magnetic drive
- weight
- pump
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Classifications
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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
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- 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
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials especially adapted for liquid pumps
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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 present invention relates to a kind of magnetic drive pump of corrosion-resistant anti-dry grinding, coordinated between outer snail body wall 1 and impeller 2 that the magnetic drive pump is used by the first weight-carrying roller bearing 9 and the first axial ball bearing 8 and installed, coordinated between interior snail body wall 3 and pump shaft 7 by the second weight-carrying roller bearing 11 and installed, the second axial ball bearing 10 is coordinated to install between the weight-carrying roller bearing 11 of impeller 2 and second, the bad vibration caused of the dynamic balancing of impeller 2 and noise can be reduced, effectively prevent the axial float of pump shaft 7 and impeller 2, greatly reduce the heat of friction generation, can the dry run in the case of the missing of pump liquid and cutout within a certain period of time, strengthen 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 weight-carrying roller bearing 9, second weight-carrying roller bearing 11, what the first axial axial ball bearing 10 of ball bearing 8 and second was selected is all resistant material, improve the decay resistance of magnetic drive pump.
Description
Technical field
The present invention relates to a kind of magnetic drive pump, particularly a kind of magnetic drive pump of corrosion-resistant anti-dry grinding.
Background technology
Magnetic drive pump is different from traditional canned pump, and motor crankshaft is not joined directly together with pump shaft, but motor crankshaft drives
Outer magnet rotor rotation, outer magnet rotor fits through magnetic force with interior magnet rotor and drives interior magnet rotor to rotate, and pump is driven by interior magnet rotor
Axle rotates, and makes the vane rotor rotation work on pump shaft.Formed between inner magnet rotor of magnetic drive pump and outer magnet rotor provided with separation sleeve
Annular seal space, pump shaft and interior magnet rotor are enclosed in annular seal space, one can avoid liquid can be right from pump shaft end to outboard leak, two
Pump shaft and interior magnet rotor are cooled down, therefore without taking pump shaft traditional dynamic sealing to be obtained with very excellent nothing
Leakage characteristics, thus it is widely used in conveying the various danger mediums such as hypertoxic, inflammable, explosive, moved in oil, chemical industry, medicine, core
The fields such as power, national defence have played important function.By the sliding bearing of magnetic drive pump inner support pump shaft is to utilize institute's course of conveying stream
What body was lubricated, often lubricity is poor for the process fluid；Secondly in production environment, it is frequently encountered liquid in pump and is taken out
The situations such as empty or liquid reduction, can produce " dry run ", be commonly called as " dry grinding ", and " dry grinding " can make sliding bearing fast in a short time
Speed heating, and the abrasion acceleration between pump shaft；In addition, the solid being dispersed in working fluid can produce potential bearing or axle journal
The grinding on surface.The build-up effect of these times can cause bearing premature abrasion, as a result cause pump shaft substantial deviation pivot,
Interior magnet rotor rubs with separation sleeve, and rapid that separation sleeve is worn out and produce hyperpyrexia, causes dielectric leakage, it is poisonous it is inflammable easily
It is quick-fried to wait material diffusion, or even trigger major disaster accident.
Impeller is uneven due to material, the accumulation of blank defect, machining error, rigging error etc., and is deposited during design
Asymmetry geometry etc., make its non-uniform mass, form certain bias, when the impeller is rotated, produce not
The centrifugal intertia force of balance, so that pump produces vibration and noise, dynamic balancing is bad to reduce the expected service life of equipment, spy
The earlier period damage of bearing is not shown, shortens the maintenance period of equipment, increases the maintenance cost of equipment, product quality is influenceed, and is disliked
Change working environment etc..
The content of the invention
In order to solve the problem of above-mentioned prior art is difficult to overcome, the invention provides a kind of magnetic force of corrosion-resistant anti-dry grinding
Pump, including 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 are radially rolled
Axis of a cylinder holds 9, second the 11, first axial axial ball bearing 10 of ball bearing 8 and second of weight-carrying roller bearing, and interior magnet rotor 5 fixes peace
Mounted in the shaft end of pump shaft 7, outer magnet rotor 6 is arranged on motor shaft end, separation sleeve is set between interior magnet rotor 5 and outer magnet rotor 6
4, separation sleeve 4 is fixedly connected with the interior body seal of snail body wall 3, and the first weight-carrying roller bearing is passed through between outer snail body wall 1 and impeller 2
9 and first axial ball bearing 8 coordinate and install, pass through the second weight-carrying roller bearing 11 between interior snail body wall 3 and pump shaft 7 and coordinate peace
The second axial ball bearing 10 is coordinated to install between dress, the weight-carrying roller bearing 11 of impeller 2 and second.
As a further improvement on the present invention, the pump shaft 7 is formed integrally with impeller 2, the material that pump shaft 7 is selected with impeller 2
Material is stainless steel material.
As a further improvement on the present invention, the weight-carrying roller bearing 11 of the first weight-carrying roller bearing 9 and second includes
Roller 14, slider 15, bearing inner race 16, bearing outer ring 17, inner shield ring 13 and outer back-up ring 12, outside bearing inner race 16 and bearing
Place and separated between roller 14, roller 14 by slider 15 between circle 17, roller 14, bearing inner race 16 and bearing outer ring 17 are selected
Material is gas Pressure Sintered Silicon Nitride, and the selection of material of slider 15 is that carborundum, silicon nitride, zirconium oxide and polytetrafluoroethylene (PTFE) are multiple
The material that one kind in condensation material, inner shield ring 13 and outer back-up ring 12 are selected is silicon nitride.
As a further improvement on the present invention, the described first axial axial ball bearing 10 of ball bearing 8 and second includes annular
Retainer 18, ball 20, thrust washer 19, the selection of material of annular retainer 18 is carborundum, silicon nitride, zirconium oxide and polytetrafluoro
One kind in ethene composite, the selection of material of thrust washer 19 is carborundum, silicon nitride and air pressure silicon nitride sintered material
One kind, the selection of material of ball 20 is gas Pressure Sintered Silicon Nitride.
The beneficial effects of the invention are as follows：Lead between this structure magnetic drive pump pump shaft 7, impeller 2 and outer snail body wall 1, interior snail body wall 3
Cross the first weight-carrying roller bearing 9, second the 11, first axial axial ball bearing 10 of ball bearing 8, second of weight-carrying roller bearing and coordinate peace
Dress, can reduce the bad vibration caused of the dynamic balancing of impeller 2 and noise, effectively prevent the axial float of pump shaft 7 and impeller 2, greatly
The big heat for reducing friction generation, can the dry run in the case of the missing of pump liquid and cutout within a certain period of time, increasing
The strong anti-dry grinding performance of magnetic drive pump, improves pump shaft 7, impeller 2, the first radial roller axle in the operation safety of magnetic drive pump, pump chamber
Hold 9, second the 11, first axial axial selection of ball bearing 10 of ball bearing 8 and second of weight-carrying roller bearing is all resistant material,
Improve the decay resistance of magnetic drive pump.
Brief description of the drawings
Fig. 1 is structural representation of the invention
Fig. 2 is the structural representation of weight-carrying roller bearing
Fig. 3 is the structural representation of axial ball bearing
Embodiment
Embodiment：A kind of corrosion-resistant, anti-dry grinding magnetic drive pump, including 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, the first weight-carrying roller bearing 9, second the 11, first axial ball axle of weight-carrying roller bearing
8 and the second axial ball bearing 10 are held, interior magnet rotor 5 is fixedly mounted on the shaft end of pump shaft 7, and outer magnet rotor 6 is arranged on motor shaft end,
Separation sleeve 4 is set between interior magnet rotor 5 and outer magnet rotor 6, and separation sleeve 4 is fixedly connected with the interior body seal of snail body wall 3, outer snail
It is fastenedly connected between body wall 1 and interior snail body wall 3, outer snail body wall 1, interior snail body wall 3 and the closing of separation sleeve 4 form pump chamber.Magnetic drive pump
During 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 magnetic
Rotor 5 is rotated, and interior magnet rotor 5 drives pump shaft 7 to rotate, and the magnetic drive pump pump shaft 7 is formed integrally with impeller 2, and impeller 2 is with pump shaft
7 rotate together with work, and pump shaft 7 and impeller 2 select stainless steel material, and the pump shaft 7 and impeller 2 that this kind of material is made have anti-corrosion
Obdurability in property, mouldability, compatibility and wide range.
Pass through the first weight-carrying roller bearing 9 and the first axial ball bearing 8 between the outer snail body wall 1 of the magnetic drive pump and impeller 2
Coordinate and install, coordinated between interior snail body wall 3 and pump shaft 7 by the second weight-carrying roller bearing 11 and installed, impeller 2 and second is radially rolled
Axis of a cylinder coordinates the second axial ball bearing 10 to install between holding 11, this kind, which coordinates, to be installed, and can reduce the bad generation of the dynamic balancing of impeller 2
Vibration and noise, can effectively prevent the axial float of pump shaft 7 and impeller 2, improve the operation safety of magnetic drive pump.Described first
The weight-carrying roller bearing 11 of weight-carrying roller bearing 9 and second includes roller 14, and slider 15, bearing inner race 16, bearing outer ring 17 is interior
Back-up ring 13 and outer back-up ring 12, place between roller 14, roller 14 between bearing inner race 16 and bearing outer ring 17 and pass through slider
15 separate, and the slider 15 avoids the friction between roller 14, substantially reduce frictional resistance, reduce friction generation heat
Amount, can the dry run in the case of the missing of pump liquid and cutout within a certain period of time, enhance the anti-dry grinding of magnetic drive pump
Performance, the dense degree that roller 14 is placed can be adjusted by slider 15 according to load, be used more in the prior art
Retainer structure is more flexible, practicality, the selection of material of slider 15 is that carborundum, silicon nitride, zirconium oxide and polytetrafluoroethylene (PTFE) are multiple
The material that one kind in condensation material, inner shield ring 13 and outer back-up ring 12 are selected is outside silicon nitride, roller 14, bearing inner race 16 and bearing
Circle 17 selects gas Pressure Sintered Silicon Nitride material, and the weight-carrying roller bearing that the material is made, wear-resisting, corrosion resistant performance is good, heavier
What is wanted is that its cold-resistant thermal impact, self lubricity and comprehensive mechanical performance are especially good, is hardly damaged, service life is long.Described
The one axial axial ball bearing 10 of ball bearing 8 and second includes annular retainer 18, and ball 20, thrust washer 19, the annular is protected
It is one kind in carborundum, silicon nitride, zirconium oxide and ptfe composite to hold the selection of material of frame 18, and thrust washer 19 is selected
With one kind that material is carborundum, silicon nitride and air pressure silicon nitride sintered material, the selection of material of ball 20 nitrogenizes for gas pressure sintering
Silicon, axial ball bearing corrosion resistant, the anti-wear performance that the material is made is good, it is often more important that its cold-resistant thermal impact, self lubricity
And comprehensive mechanical performance is especially good, it is hardly damaged, service life is long.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand present disclosure and be carried out, and it is not intended to limit the scope of the present invention, all according to the present invention
The equivalent change or modification that Spirit Essence is made, should all cover within the scope of the present invention.
Claims (4)
1. a kind of magnetic drive pump of corrosion-resistant anti-dry grinding, including pump shaft (7), impeller (2), interior magnet rotor (5), outer magnet rotor (6), every
From set (4), interior snail body wall (3), outer snail body wall (1), the first weight-carrying roller bearing (9), the second weight-carrying roller bearing (11), first
Axial ball bearing (8) and the second axial ball bearing (10), interior magnet rotor (5) are fixedly mounted on pump shaft (7) shaft end, outer magnet rotor
(6) be arranged on motor shaft end, between interior magnet rotor (5) and outer magnet rotor (6) setting separation sleeve (4), separation sleeve (4) with it is interior
Snail body wall (3) body seal is fixedly connected, it is characterised in that：Pass through the first radial roller between outer snail body wall (1) and impeller (2)
Bearing (9) and the first axial ball bearing (8), which coordinate, is installed, and the second radial roller axle is passed through between interior snail body wall (3) and pump shaft (7)
Hold (11) and coordinate installation, coordinate the second axial ball bearing (10) to install between impeller (2) and the second weight-carrying roller bearing (11).
2. magnetic drive pump according to claim 1, it is characterised in that：The pump shaft (7) is formed integrally with impeller (2), pump shaft
(7) material selected with impeller (2) is stainless steel material.
3. magnetic drive pump according to claim 1, it is characterised in that：First weight-carrying roller bearing (9) and second is radially
Roller bearing (11) include roller (14), slider (15), bearing inner race (16), bearing outer ring (17), inner shield ring (13) and outside
Back-up ring (12), places roller (14) between bearing inner race (16) and bearing outer ring (17), and roller passes through slider between (14)
(15) separate, the material that roller (14), bearing inner race (16) and bearing outer ring (17) are selected is gas Pressure Sintered Silicon Nitride, slider
(15) the selection of material be carborundum, silicon nitride, zirconium oxide and ptfe composite in one kind, inner shield ring (13) and outside
The material that back-up ring (12) is selected is silicon nitride.
4. magnetic drive pump according to claim 1, it is characterised in that：Described first axial ball bearing (8) and the second axial ball
Bearing (10) include annular retainer (18), ball (20), thrust washer (19), annular retainer (18) the selection of material for carbonization
One kind in silicon, silicon nitride, zirconium oxide and ptfe composite, thrust washer (19) the selection of material is carborundum, nitrogen
One kind of silicon nitride material, ball (20) the selection of material is gas Pressure Sintered Silicon Nitride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410016266.5A CN104776033B (en) | 2014-01-14 | 2014-01-14 | A kind of magnetic drive pump of corrosion-resistant anti-dry grinding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410016266.5A CN104776033B (en) | 2014-01-14 | 2014-01-14 | A kind of magnetic drive pump of corrosion-resistant anti-dry grinding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104776033A CN104776033A (en) | 2015-07-15 |
| CN104776033B true CN104776033B (en) | 2017-09-15 |
Family
ID=53617716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410016266.5A Active CN104776033B (en) | 2014-01-14 | 2014-01-14 | A kind of magnetic drive pump of corrosion-resistant anti-dry grinding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104776033B (en) |
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 |
| US5501582A (en) * | 1994-01-26 | 1996-03-26 | Le Carbone Lorraine | Magnetically driven centrifugal pump |
| DE10104032A1 (en) * | 2000-02-08 | 2001-08-09 | Skf Sverige Ab Goeteborg | Bearing arrangement used in galvanizing lines or in continuous casting plants comprises a bearing consisting of an inner bearing ring and an outer bearing ring, and a complete assembly with roller bodies arranged between the rings |
| CN2486753Y (en) * | 2001-06-20 | 2002-04-17 | 杭州大路实业有限公司 | Magnetic force driving pump |
| CN1619171A (en) * | 2004-07-08 | 2005-05-25 | 沈阳建筑大学 | High precision hot press silicon nitride ceramic ball bearing and its manufacturing method |
| CN200982309Y (en) * | 2006-09-15 | 2007-11-28 | 华东理工大学 | Magnetic pump thrust sliding bearing |
| CN202851381U (en) * | 2012-10-23 | 2013-04-03 | 河北深海电器有限公司 | Direct current brushless magnetic force water pump |
| CN203670229U (en) * | 2014-01-14 | 2014-06-25 | 高涵文 | Magnetic drive pump resistant to corrosion and dry grinding |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10024953A1 (en) * | 2000-05-22 | 2001-11-29 | Richter Chemie Tech Itt Gmbh | Centrifugal pump with magnetic coupling |
-
2014
- 2014-01-14 CN CN201410016266.5A patent/CN104776033B/en active Active
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 |
| US5501582A (en) * | 1994-01-26 | 1996-03-26 | Le Carbone Lorraine | Magnetically driven centrifugal pump |
| DE10104032A1 (en) * | 2000-02-08 | 2001-08-09 | Skf Sverige Ab Goeteborg | Bearing arrangement used in galvanizing lines or in continuous casting plants comprises a bearing consisting of an inner bearing ring and an outer bearing ring, and a complete assembly with roller bodies arranged between the rings |
| CN2486753Y (en) * | 2001-06-20 | 2002-04-17 | 杭州大路实业有限公司 | Magnetic force driving pump |
| CN1619171A (en) * | 2004-07-08 | 2005-05-25 | 沈阳建筑大学 | High precision hot press silicon nitride ceramic ball bearing and its manufacturing method |
| CN200982309Y (en) * | 2006-09-15 | 2007-11-28 | 华东理工大学 | Magnetic pump thrust sliding bearing |
| CN202851381U (en) * | 2012-10-23 | 2013-04-03 | 河北深海电器有限公司 | Direct current brushless magnetic force water pump |
| CN203670229U (en) * | 2014-01-14 | 2014-06-25 | 高涵文 | Magnetic drive pump resistant to corrosion and dry grinding |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104776033A (en) | 2015-07-15 |
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