CN103470514B - Magnetic drive pump - Google Patents
Magnetic drive pump Download PDFInfo
- Publication number
- CN103470514B CN103470514B CN201310364817.2A CN201310364817A CN103470514B CN 103470514 B CN103470514 B CN 103470514B CN 201310364817 A CN201310364817 A CN 201310364817A CN 103470514 B CN103470514 B CN 103470514B
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- Prior art keywords
- bearing
- pump
- magnetic assembly
- outer ring
- magnetic drive
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Abstract
The invention provides a kind of magnetic drive pump, it comprises and forms by pump case and separation sleeve the pump chamber closed; Interior magnetic assembly and the impeller driven by this interior magnetic assembly; Pump shaft and two bearings be sleeved on this pump shaft, the sealing cover that bearing comprises bearing inner race, rolling element and bearing outer ring and is arranged on for the protection of rolling element between bearing inner race and bearing outer ring; And outer magnetic assembly, in driving during for rotating under external motivating force, magnetic assembly rotates; Pump shaft is solid shaft, and the rolling element in bearing gathers and is arranged between bearing inner race and bearing outer ring.The present invention change prior art middle (center) bearing and hollow pump shaft idle running not wear-resisting, not corrosion-resistant, not the working medium of resistance to graininess and can not heavy duty problem, make magnetic drive pump can under graininess working medium or corrosivity high load heavy duty work, and can to dally.
Description
Technical field
The present invention relates to a kind of magnetic drive pump, particularly relate to a kind of idle running, can heavy duty magnetic drive pump.
Background technique
In medicine, chemical industry, the petrochemical plant of America and Europe, no-leakage pump is seen everywhere, and most medium than water all can adopt magnetic drive pump to carry.In addition, except not leaking, no-leakage pump in addition non-maintaining and life-span length waits other plurality of advantages.The chemical mediums such as nearly liquid chlorine taken place frequently for 2 years are revealed in course of conveying, and toxic gas pollutes and even explode in chemical plant causes the destruction of environment, and safety transports the significance of various medium all to make people recognize.How to reduce leakage and more and more become the vital issue that enterprise produces and even government regulation will be considered with legislation.Magnetic drive pump serves very important effect in fed sheet of a media.
Magnetic drive pump (that is, magnetic force driving pump) is primarily of a few part composition such as pump case, separation sleeve, interior magnetic assembly, pump shaft, impeller, bearing.Magnetic drive pump is made up of outer magnetic assembly, interior magnetic assembly and non-magnetic separation sleeve, when external motivating force drives outer magnetic assembly to rotate, magnetic field energy penetrates air gap and namagnetic substance, in drive is connected with impeller, synchronous rotary made by magnetic assembly, realize the contactless synchronous transmission of power, the movable sealing structure easily revealed is converted into the static seal structure of zero leakage.Because pump shaft, interior magnetic assembly are completely closed by pump case, separation sleeve, thus thoroughly solve " run, drip, leak " problem.
In prior art, sliding bearing mostly is between pump shaft and bearing or pump case, magnetic drive pump in the running, pump shaft, sliding bearing and interior magnetic assembly all must be immersed in the liquid as working medium simultaneously, take away fricative heat between pump shaft and bearing by working medium in pump shaft, continuous flowing between sliding bearing and interior magnetic assembly.Very serious frictional heating is there will be when the working medium in magnetic drive pump is evacuated.After medium is evacuated, the interior magnetic assembly continuing idle running drive pump shaft constantly and bearing support produce sliding friction, the rotation of sliding bearing and friction produce a large amount of heat and can not be taken away in time owing to lacking the cooling of flowing working medium, and due to the reason such as making material of pump shaft, cause the overheating breaking of pump shaft or interior magnetic assembly temperature too high and demagnetization or plastic fusing.
Also the technology using rolling bearing to replace sliding bearing is had in prior art.But rolling bearing of the prior art, with retainer, mostly is plastic materials and makes.The magnetic drive pump of prior art easily produces following problem: rolling bearing endoporus be contained in front pump shell protrude plastic hoop or plastic tube on, because plastic hoop or plastic tube belong to thin-walled parts, be unable to undergo current moving produce radial force and vibration limits; Due to reasons such as the cold flow of plastics, contractions between bearing and pump shaft, make to produce relative movement between bearing and pump shaft and damage supporting element; Occupying position over half due to retainer makes ball reduce, and bearing capacity is very little; Bearing adopts the traditional materials such as silicon nitride, silicon carbide, zirconium oxide, and corrosion resistance is not strong, and the working medium running into severe corrosive is easy to be corroded; Because retainer can not wait brittle material manufacture with pottery, can only replace with the material that matter is secondary, the overall performance of bearing is deteriorated, and when retainer runs into graininess working medium, the particulate matter friction easily and in working medium or collision cause retainer premature failure; Rolling bearing sealing cover adopt rubber material, meet strong acid working medium time easy carbonization burn, meet organic solvent can melt burst bad.Though although this technology proposes the time having nearly ten years, cannot apply.
It can thus be appreciated that working medium can not have particle, magnetic drive pump not to dally, heavy duty, bearing material corrosion resistance these problems low still can not require further study in production practices and solve.
Summary of the invention
The technical problem to be solved in the present invention is, improves magnetic drive pump bearing capacity, can be heavily loaded, and the heat produced when reducing to rotate can dally, and improves bearing wear-resisting property, and improves decay resistance.
For solving above-mentioned the problems of the prior art, according to an aspect of the present invention, provide a kind of magnetic drive pump, it comprises:
Pump chamber, it is closed by pump case and separation sleeve and is formed;
Interior magnetic assembly and the impeller driven by this interior magnetic assembly;
Pump shaft and two bearings be sleeved on this pump shaft, the sealing cover that described bearing comprises bearing inner race, rolling element and bearing outer ring and is arranged on for the protection of described rolling element between described bearing inner race and described bearing outer ring; And
Outer magnetic assembly, drives described interior magnetic assembly to rotate during for rotating under external motivating force;
Described pump shaft is solid shaft, and the rolling element in described bearing gathers and is arranged between described bearing inner race and described bearing outer ring.
According to another aspect of the present invention, the first axle sleeve for fixing described pump shaft and the second axle sleeve is provided with in described pump chamber, wherein said first axle sleeve is arranged on described pump case, described second axle sleeve is arranged on described separation sleeve, described impeller is fixedly connected with described interior magnetic assembly, and described interior magnetic assembly and described bearing outer ring are fastenedly connected.
According to a further aspect of the invention, be provided with the bearing support for fixing described bearing outer ring in described pump chamber, described impeller and described interior magnetic assembly are fixedly attached to the two ends of described pump shaft respectively.
According to a further aspect of the invention, described rolling element is ball, roller or needle roller.
According to a further aspect of the invention, described rolling element is made up of pressureless sintering silicon carbide.
According to a further aspect of the invention, described bearing inner race is made up of pressureless sintering silicon carbide.
According to a further aspect of the invention, described bearing outer ring is made up of pressureless sintering silicon carbide.
According to a further aspect of the invention, described sealing cover is made up of teflon.
According to a further aspect of the invention, described sealing cover is made up of teflon.
According to a further aspect of the invention, described sealing cover is made up of teflon.
Beneficial effect of the present invention be to change the idle running of prior art middle (center) bearing not wear-resisting, not the working medium of resistance to graininess, pump shaft not firm, can not the problem of heavy duty, make magnetic drive pump can under graininess, corrosive working medium high load heavy duty work, and can to dally.
Accompanying drawing explanation
Fig. 1 is the magnetic drive pump structural representation of the first mode of execution of the present invention;
Fig. 2 is the magnetic drive pump structural representation of the second mode of execution of the present invention;
Fig. 3 is the schematic cross-section of bearing of the present invention;
Fig. 4 is the partial enlarged drawing of bearing of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with embodiment also with reference to accompanying drawing, the present invention is described in more detail.Should be appreciated that, these describe just exemplary, and do not really want to limit the scope of the invention.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present invention.
Fig. 1 is the magnetic drive pump structural representation of the first mode of execution of the present invention.Wherein, the impeller 4 that magnetic drive pump mainly comprises outer magnetic assembly, pump case 1 and interior magnetic assembly and driven by this interior magnetic assembly, pump case 1 and separation sleeve 2 are closed and are formed pump chamber, and interior magnetic assembly is by inner magnet 3 and keep the retainer of inner magnet 3 to form.During magnetic drive pump work, outer magnetic assembly is driven to rotate by external motivating force, interior magnetic assembly synchronous rotary under the attraction force of outer magnetic assembly, and impeller 4.Magnetic drive pump is provided with hitch 81, for connecting pump and power source composition one.Magnetic drive pump also comprises pump shaft 5 and is sleeved on two bearings 6 on this pump shaft 5.With reference to figure 3, the sealing cover 7 that bearing 6 comprises bearing inner race 33, rolling element 32 and bearing outer ring 31 and is arranged on for the protection of rolling element 32 between bearing inner race 33 and bearing outer ring 31.Outer magnetic assembly is made up of outer magnet 8 and coupling drive.External motivating force can be provided by motor, internal-combustion engine, steamer etc.In the present invention, the pump shaft 5 of magnetic drive pump is solid shaft, and the rolling element 32 in bearing 6 gathers and is arranged between bearing inner race 33 and bearing outer ring 31.Rolling element 32 has micro gap each other, and has self-lubricating function.With adopt compared with roller holder in prior art, the present invention can arrange more rolling element, thus bears larger load.Rolling element, according to the size in bearing capacity and space, uses ball, roller, needle roller respectively.
In the first mode of execution of the present invention, the first axle sleeve 11 and the second axle sleeve 12 for fixing pump shaft 5 is provided with in pump chamber, wherein the first axle sleeve 11 is arranged on pump case 1, second axle sleeve 12 is arranged on separation sleeve 2, two axle sleeves are jointly to pump shaft 5 fixations, impeller 4 is fixedly connected with interior magnetic assembly, and interior magnetic assembly and bearing outer ring 31 are fastenedly connected.Two axle sleeves are set, use when solid pump shaft 5 is installed more firm, can load be improved equally.
When magnetic drive pump works, external motivating force drives outer magnetic assembly to rotate, and due to magnetic attraction, interior magnetic assembly together rotates under the drive of outer magnetic assembly.Due to interior magnetic assembly be fixedly connected with impeller 4, the first axle sleeve 11 and the second axle sleeve 12 fixing pump shaft 5 jointly, impeller 4 synchronous rotary that it is axle center that the rotation of interior magnetic assembly can drive with pump shaft 5, the bearing outer ring 31 of interior magnetic assembly and bearing 6 is fastenedly connected, and rotates with rolling element 32 and sealing cover 7 simultaneously.But now pump shaft 5 non rotating, in this case, magnetic drive pump is fixed shaft type magnetic drive pump.During rotation, two bearings 6 adopt rolling bearing, and make the friction main manifestations between interior magnetic assembly 3 and pump shaft 5 be rolling friction, compared with traditional sliding friction, frictional force significantly reduces, thus produce pettiness heat when can realize idle running.Pressureless sintering carbofrax material is a kind of new ceramic material, chemical resistance is good, wear-resisting property is good, intensity is high, hardness is high, selflubricating, adopt pressureless sintering carbofrax material to substitute the traditional materials such as silicon nitride of the prior art, silicon carbide, zirconium oxide and make bearing 6, the mechanical strength of bearing 6 can be made to strengthen, thus make the bearing capacity of pump shaft 5 and bearing support 21, wear resistance improves greatly.
Fig. 2 is the magnetic drive pump structural representation of the second mode of execution of the present invention.Wherein, be provided with that bearing outer ring 31 for bearing support 21, two bearings 6 of rigid bearing 6 is fastening to be arranged in bearing support 21 in pump chamber, impeller 4 and interior magnetic assembly are fixedly attached to the two ends of pump shaft 5 respectively.
In this case, magnetic drive pump mainly comprises interior magnetic assembly, impeller 4, bearing support 21, pump shaft 5 and bearing 6, and interior magnetic assembly is fixedly connected with one end of pump shaft 5, and impeller 4 is fixedly connected with the other end of pump shaft 5.The firm periphery being sleeved on bearing 6 of bearing support 21, is used for fixing bearing outer ring 31.
When magnetic drive pump works, motor drives outer magnetic assembly to rotate, and due to magnetic attraction, interior magnetic assembly together rotates under the drive of outer magnetic assembly.Bearing inner race 33, the rolling element 32 of bearing 6 rotate together with pump shaft 5, and bearing outer ring 31, sealing cover 7 are relative with bearing support 21 fixing.In this case, the pump shaft 5 of magnetic drive pump rotates along with the rotation of interior magnetic assembly, can be called revolution axis type magnetic drive pump.During rotation, compared with conventional slip bearing, the friction main manifestations of magnetic drive pump of the present invention is rolling friction.Adopt pressureless sintering carbofrax material to substitute the traditional materials such as silicon nitride of the prior art, silicon carbide, zirconium oxide and make bearing 6, the mechanical strength of bearing 6 can be made to strengthen, and pump shaft 5 adopts solid construction, and bearing capacity and wear resistance are all greatly improved.
In two kinds of mode of executions, the pump shaft 5 of magnetic drive pump all adopts solid shaft, when working medium be graininess or be corrosive material time, the pump shaft 5 of solid construction is more firm, larger load and stronger friction can be born, thus make working state more stable, therefore the pump shaft of solid construction can adapt to graininess or the working environment of the material that is corrosive better.
Fig. 3 is the schematic cross-section of the bearing of an embodiment of the invention, and Fig. 4 is the partial enlarged drawing of bearing of the present invention.The sealing cover 7 that bearing 6 comprises bearing inner race 33, bearing outer ring 31, rolling element 32 and is arranged on for the protection of rolling element 32 between bearing inner race 33 and bearing outer ring 31.Bearing inner race 33, bearing outer ring 31, rolling element 32 are made by pressureless sintering carbofrax material.Rolling element 32 in bearing 6 gathers and is arranged between bearing inner race 33 and bearing outer ring 31, and the rolling element 32 of bearing 6, in alignment processes, can have small gap between each rolling element 32, and tool selflubricating.Rolling element, according to the size in bearing capacity and space, uses ball, roller, needle roller respectively.
Magnetic drive pump in the course of the work, when working medium be oil, industrial chemicals etc. there is the feed liquid of corrosivity or particle time, due to magnetic force pump performance characteristic, feed liquid can enter in whole interior magnetic assembly, contact in magnetic assembly 3, bearing support 21, pump shaft 5 and bearing 6.
Now, as shown in Figure 4, the bearing 6 between pump shaft 5 and bearing support 21 can install sealing cover 7 additional, and sealing cover 7 closed set is between the bearing inner race 33 and bearing outer ring 31 of bearing 6, and sealing cover 7 is made up of polytetrafluoroethylmaterial material.Polytetrafluoroethylmaterial material has the advantages such as friction factor is low, temperature tolerance good, acid-alkali-corrosive-resisting; when having the feed liquid contact bearing 6 of corrosivity or particle; the protection of the sealing cover 7 that polytetrafluoroethylmaterial material is made; the rolling element 32 of bearing 6 inside can be made can not to be subject to the impact of extraneous working medium, thus to ensure that bearing 6 more efficiently operates and works.
Sealing cover 7 can the both sides of closed set outer between the inner ring and outer ring of bearing 6.When the feed liquid particulate matter of working medium is more, the most effectively can ensure the safety of rolling element 32 in bearing 6, bearing 6 is worked better.
In magnetic drive pump of the present invention, the rolling element 32 of bearing 6 can be ball, roller or needle roller.Different occasions according to magnetic drive pump application can select the bearing 6 containing dissimilar rolling element 32.Under the occasion that radial pressure is larger, can consider to use roller bearing 6; Needle bearing 6 is used when narrow space.
Should be understood that, above-mentioned embodiment of the present invention only for exemplary illustration or explain principle of the present invention, and is not construed as limiting the invention.Therefore, any amendment made when without departing from the spirit and scope of the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.In addition, claims of the present invention be intended to contain fall into claims scope and border or this scope and border equivalents in whole change and modification.
Claims (7)
1. a magnetic drive pump, it comprises:
Pump chamber, it is closed by pump case and separation sleeve and is formed;
Interior magnetic assembly and the impeller driven by this interior magnetic assembly;
Pump shaft and two bearings be sleeved on this pump shaft, the sealing cover that described bearing comprises bearing inner race, rolling element and bearing outer ring and is arranged on for the protection of described rolling element between described bearing inner race and described bearing outer ring; And
Outer magnetic assembly, drives described interior magnetic assembly to rotate during for rotating under external motivating force;
It is characterized in that, described pump shaft is solid shaft, and the rolling element in described bearing gathers and is arranged between described bearing inner race and described bearing outer ring;
Seal cap sealing is embedded between the bearing inner race of bearing and bearing outer ring;
Outer magnetic assembly is made up of outer magnet and coupling drive;
Interior magnetic assembly is by inner magnet and keep the retainer of inner magnet to form;
Magnetic drive pump is also provided with hitch, and hitch consists of one for connecting magnetic drive pump and power source;
The first axle sleeve for fixing described pump shaft and the second axle sleeve is provided with in described pump chamber, wherein said first axle sleeve is arranged on described pump case, described second axle sleeve is arranged on described separation sleeve, described impeller is fixedly connected with described interior magnetic assembly, and described interior magnetic assembly and described bearing outer ring are fastenedly connected;
Be provided with the bearing support for fixing described bearing outer ring in described pump chamber, the described bearing outer ring of two bearings is fastening to be arranged in described bearing support, and described impeller and described interior magnetic assembly are fixedly attached to the two ends of described pump shaft respectively;
Described rolling element is ball, roller or needle roller.
2. magnetic drive pump as claimed in claim 1, it is characterized in that, described rolling element is made up of pressureless sintering silicon carbide.
3. magnetic drive pump as claimed in claim 2, it is characterized in that, described bearing inner race is made up of pressureless sintering silicon carbide.
4. magnetic drive pump as claimed in claim 3, it is characterized in that, described bearing outer ring is made up of pressureless sintering silicon carbide.
5. magnetic drive pump as claimed in claim 1, it is characterized in that, described sealing cover is made up of teflon.
6. magnetic drive pump as claimed in claim 3, it is characterized in that, described sealing cover is made up of teflon.
7. magnetic drive pump as claimed in claim 4, it is characterized in that, described sealing cover is made up of teflon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310364817.2A CN103470514B (en) | 2013-08-20 | 2013-08-20 | Magnetic drive pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310364817.2A CN103470514B (en) | 2013-08-20 | 2013-08-20 | Magnetic drive pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103470514A CN103470514A (en) | 2013-12-25 |
| CN103470514B true CN103470514B (en) | 2016-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310364817.2A Expired - Fee Related CN103470514B (en) | 2013-08-20 | 2013-08-20 | Magnetic drive pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103470514B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2778414C1 (en) * | 2021-10-12 | 2022-08-18 | Александр Анатольевич Изюков | Bearing support of a sealed centrifugal pump with a magnetic coupling |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775374A (en) * | 2014-02-19 | 2014-05-07 | 安徽卧龙泵阀有限责任公司 | Nonmetallic magnetic driving pump having idle running function |
| CN105298855A (en) * | 2014-07-02 | 2016-02-03 | 泾县双氟泵阀技术服务有限公司 | Magnetic pump |
| CN105041669A (en) * | 2015-08-05 | 2015-11-11 | 芜湖环球汽车配件有限公司 | Hot oil pump |
| CN114934906A (en) * | 2022-06-06 | 2022-08-23 | 江苏威德凯泵业科技有限公司 | Magnetic drive vortex mortar pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5295798A (en) * | 1991-09-05 | 1994-03-22 | Matsushita Electric Industrial Co., Ltd. | Fluid rotating apparatus with rotor communicating path |
| CN2620112Y (en) * | 2003-05-10 | 2004-06-09 | 兰州阳普科技有限公司 | Pressure-and heat-resistance magnetic pump |
| CN1902399A (en) * | 2003-12-30 | 2007-01-24 | 万纳工程公司 | Hydraulic balancing magnetically driven centrifugal pump |
| CN201125961Y (en) * | 2007-12-11 | 2008-10-01 | 刘宽 | Full seal Raymond machine special bearing |
| CN203412773U (en) * | 2013-08-20 | 2014-01-29 | 李�瑞 | Magnetic drive pump |
-
2013
- 2013-08-20 CN CN201310364817.2A patent/CN103470514B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5295798A (en) * | 1991-09-05 | 1994-03-22 | Matsushita Electric Industrial Co., Ltd. | Fluid rotating apparatus with rotor communicating path |
| CN2620112Y (en) * | 2003-05-10 | 2004-06-09 | 兰州阳普科技有限公司 | Pressure-and heat-resistance magnetic pump |
| CN1902399A (en) * | 2003-12-30 | 2007-01-24 | 万纳工程公司 | Hydraulic balancing magnetically driven centrifugal pump |
| CN201125961Y (en) * | 2007-12-11 | 2008-10-01 | 刘宽 | Full seal Raymond machine special bearing |
| CN203412773U (en) * | 2013-08-20 | 2014-01-29 | 李�瑞 | Magnetic drive pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2778414C1 (en) * | 2021-10-12 | 2022-08-18 | Александр Анатольевич Изюков | Bearing support of a sealed centrifugal pump with a magnetic coupling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103470514A (en) | 2013-12-25 |
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Effective date of registration: 20160201 Address after: 324000 No. 16-5 Nanshan Road, Qujiang District, Zhejiang, Quzhou Applicant after: Li Rui Address before: 324022 No. 16-5, Nanshan Road, Quzhou, Zhejiang Applicant before: Li Rui |
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Granted publication date: 20160302 Termination date: 20200820 |