CN103470514A - Magnetic pump - Google Patents
Magnetic pump Download PDFInfo
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- CN103470514A CN103470514A CN2013103648172A CN201310364817A CN103470514A CN 103470514 A CN103470514 A CN 103470514A CN 2013103648172 A CN2013103648172 A CN 2013103648172A CN 201310364817 A CN201310364817 A CN 201310364817A CN 103470514 A CN103470514 A CN 103470514A
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- pump
- bearing
- magnetic assembly
- magnetic
- outer ring
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Abstract
The invention provides a magnetic pump, which comprises a pump cavity, an inner magnetic assembly, an impeller, a pump shaft, two bearings and an outer magnetic assembly, wherein the pump cavity consists of a pump case and an isolation sleeve, the impeller is driven by the inner magnetic assembly, the two bearings are sheathed on the pump shaft, each bearing comprises a bearing inner ring, a rolling body, a bearing outer ring and a sealing cover, the sealing cover is arranged between the bearing inner ring and the bearing outer ring for protecting the rolling body, the outer magnetic assembly is used for driving the inner magnetic assembly to rotate under the effect of the external driving force, the pump shaft is a solid shaft, and the rolling bodies arranged in the bearings are densely distributed and arranged between the bearing inner ring and the bearing outer ring. The magnetic pump solves the problems that in the prior art, the bearings and the hollow pump shaft do not have the wear resistance, corrosion resistance or particle work medium resistance in the idle state, and the heavy load cannot be realized. The magnetic pump can realize the high-load heavy-load work under the condition of particular work media or corrosive environment, and in addition, the idle state can be realized.
Description
Technical field
The present invention relates to a kind of magnetic drive pump, relate in particular to a kind of idle running, can the heavy duty magnetic drive pump.
Background technique
In American-European medicine, chemical industry, petrochemical plant, no-leakage pump is seen everywhere, and the medium beyond the overwhelming majority dewaters all can adopt magnetic drive pump to be carried.In addition, except not leaking, no-leakage pump also has non-maintaining and long other plurality of advantages that waits of life-span.Nearly chemical mediums such as liquid chlorine that take place frequently in 2 years are revealed in course of conveying, and the destruction that toxic gas pollutes and even the chemical plant blast causes environment all makes people recognize that safety transports the significance of various media.How to reduce leakage and more and more become the vital issue that enterprise's production and even government regulation and legislation will be considered.Magnetic drive pump has played very important effect in fed sheet of a media.
Magnetic drive pump (that is, magnetic force driving pump) mainly is comprised of several parts such as pump case, separation sleeve, interior magnetic assembly, pump shaft, impeller, bearings.Magnetic drive pump is comprised of outer magnetic assembly, interior magnetic assembly and non-magnetic separation sleeve, when external motivating force drives the outer magnetic assembly rotation, magnetic field energy penetrates air gap and namagnetic substance, the interior magnetic assembly that drive is connected with impeller is made synchronous rotary, realize the contactless synchronous transmission of power, the movable sealing structure of easily revealing is converted into to the static seal structure of zero leakage.Because pump shaft, interior magnetic assembly are sealed fully by pump case, separation sleeve, thereby thoroughly solved " run, drip, leak " problem.
In prior art, mostly be sliding bearing 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, constantly flowing and taking away fricative heat between pump shaft and bearing by working medium between pump shaft, sliding bearing and interior magnetic assembly.Working medium in magnetic drive pump there will be very serious frictional heating while being evacuated.After medium is evacuated, the interior magnetic assembly that continues idle running drives pump shaft constantly and bearing support generation 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 mobile working medium, and, due to the reasons 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.
The technology of using rolling bearing to replace sliding bearing is also arranged in prior art.But rolling bearing of the prior art, with retainer, mostly be plastic materials and make.The magnetic drive pump of prior art easily produces following problem: the rolling bearing endoporus is contained on the plastic hoop or plastic tube that front pump shell protrudes, and because plastic hoop or plastic tube belong to thin-walled parts, is unable to undergo radial force that the current moving produces and vibration limits; Due to reasons such as the cold flow of plastics, contractions, make to produce relative movement between bearing and pump shaft and damage supporting element between bearing and pump shaft; Occupy position over half ball is reduced due to retainer, 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 that runs into severe corrosive is easy to be corroded; Because retainer can not wait the brittle material manufacture with pottery, can only replace with the material of matter time, the overall performance variation of bearing, when retainer runs into the graininess working medium, easily and particulate matter friction or collision in working medium cause the retainer premature failure; The rolling bearing sealing cover adopts rubber material, and while meeting the strong acid working medium, easy carbonization is burnt, the machine solvent of meeting can melt burst bad.Though, although this technology proposes that the time of nearly ten years is arranged, can't apply.
Hence one can see that, working medium can not have particle, magnetic drive pump can not dally, can not heavy duty, low these problems of bearing material corrosion resistance still require further study and solve in production practices.
Summary of the invention
The technical problem to be solved in the present invention is, improves the magnetic drive pump bearing capacity, can heavy duty, and the heat produced while reducing to rotate can dally, and improves the 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 formed by pump case and separation sleeve sealing;
Interior magnetic assembly and the impeller driven by magnetic assembly in this;
Pump shaft and be sleeved on two bearings on this pump shaft, described bearing comprise bearing inner race, rolling element and bearing outer ring and be arranged on described bearing inner race and described bearing outer ring between for the protection of the sealing cover of described rolling element; And
Outer magnetic assembly, drive described interior magnetic assembly when rotating under driving force externally and rotate;
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, be provided with the first axle sleeve and the second axle sleeve for fixing described pump shaft in described pump chamber, wherein said the first axle sleeve is arranged on described pump case, described the 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 respectively the two ends of described pump shaft.
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 by pressureless sintering silicon carbide.
According to a further aspect of the invention, described bearing inner race is made by pressureless sintering silicon carbide.
According to a further aspect of the invention, described bearing outer ring is made by pressureless sintering silicon carbide.
According to a further aspect of the invention, described sealing cover is made by teflon.
According to a further aspect of the invention, described sealing cover is made by teflon.
According to a further aspect of the invention, described sealing cover is made by teflon.
Beneficial effect of the present invention has been to change that the idle running of prior art middle (center) bearing is not wear-resisting, firm, the problem that can not heavy duty of the working medium of anti-graininess the, pump shaft not, magnetic drive pump can be worked under graininess, corrosive working medium in the high load heavy duty, and can dally.
The 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 purpose, technical solutions and advantages of the present invention more cheer and bright, below in conjunction with embodiment and with reference to accompanying drawing, the present invention is described in more detail.Should be appreciated that, these descriptions are exemplary, and do not really want to limit the scope of the invention.In addition, in the following description, omitted the description to known configurations and technology, 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, magnetic drive pump mainly comprises outer magnetic assembly, pump case 1 and interior magnetic assembly and the impeller 4 driven by magnetic assembly in this, and pump case 1 and separation sleeve 2 sealings form 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, drive outer magnetic assembly by external motivating force and rotate, 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, forms 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, bearing 6 comprise bearing inner race 33, rolling element 32 and bearing outer ring 31 and be arranged on bearing inner race 33 and bearing outer ring 31 between for the protection of the sealing cover 7 of rolling element 32.Outer magnetic assembly is comprised 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 the available technology adopting roller holder, compare, the present invention can arrange more rolling element, thereby bears larger load.Rolling element, according to the size in bearing capacity and space, uses respectively ball, roller, needle roller.
In the first mode of execution of the present invention, in pump chamber, be provided with for fixedly the first axle sleeve 11 and second axle sleeve 12 of pump shaft 5, wherein the first axle sleeve 11 is arranged on pump case 1, the second axle sleeve 12 is arranged on separation sleeve 2, two axle sleeves are jointly to 5 fixations of pump shaft, 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, more firm while using the solid pump shaft 5 of installation, can improve load equally.
When magnetic drive pump is worked, external motivating force drives outer magnetic assembly and rotates, and due to magnetic attraction, interior magnetic assembly is together rotation under the drive of outer magnetic assembly.Because interior magnetic assembly is fixedly connected with impeller 4, the first axle sleeve 11 and the common fixedly pump shaft 5 of the second axle sleeve 12, the rotation of interior magnetic assembly can drive take impeller 4 synchronous rotaries that pump shaft 5 is axle center, the bearing outer ring 31 of interior magnetic assembly and bearing 6 is fastenedly connected, and with rolling element 32 and sealing cover 7, rotates simultaneously.But now pump shaft 5 does not rotate, in this case, magnetic drive pump is the fixed shaft type magnetic drive pump.During rotation, two bearings 6 adopt rolling bearing, and making the friction main manifestations between interior magnetic assembly 3 and pump shaft 5 is rolling friction, with traditional sliding friction, compares, and frictional force significantly reduces, thereby produces the pettiness heat in the time of can realizing dallying.The 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 the 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, can make the mechanical strength of bearing 6 strengthen, thereby pump shaft 5 and bearing capacity, the wear resistance of bearing support 21 are improved greatly.
Fig. 2 is the magnetic drive pump structural representation of the second mode of execution of the present invention.Wherein, be provided with fastening being arranged in bearing support 21 of bearing outer ring 31 for 21, two bearings 6 of bearing support of rigid bearing 6 in pump chamber, impeller 4 and interior magnetic assembly are fixedly attached to respectively the two ends of pump shaft 5.
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 an end of pump shaft 5, and impeller 4 is fixedly connected with the other end of pump shaft 5.The firm periphery that is sleeved on bearing 6 of bearing support 21, be used for fixing bearing outer ring 31.
When magnetic drive pump is worked, motor drives outer magnetic assembly and rotates, and due to magnetic attraction, interior magnetic assembly is together rotation under the drive of outer magnetic assembly.The bearing inner race 33 of bearing 6, rolling element 32 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 the revolution axis type magnetic drive pump.During rotation, with traditional sliding bearing, compare, the friction main manifestations of magnetic drive pump of the present invention is rolling friction.Adopt the 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, can make the mechanical strength of bearing 6 strengthen, pump shaft 5 adopts solid construction, and bearing capacity and wear resistance all are greatly improved.
In two kinds of mode of executions, the pump shaft 5 of magnetic drive pump all adopts solid shaft, when working medium is graininess or while being corrosive material, the pump shaft 5 of solid construction is more firm, can bear larger load and stronger friction, thereby make working state more stable, so 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.Bearing 6 comprise bearing inner race 33, bearing outer ring 31, rolling element 32 and be arranged on bearing inner race 33 and bearing outer ring 31 between for the protection of the sealing cover 7 of rolling element 32.Bearing inner race 33, bearing outer ring 31, rolling element 32 are made by the 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 the tool selflubricating.Rolling element, according to the size in bearing capacity and space, uses respectively ball, roller, needle roller.
In the course of the work, when working medium is oil, industrial chemicals etc. while having the feed liquid of corrosivity or particle, due to the magnetic force pump performance characteristic, feed liquid can enter in whole interior magnetic assembly magnetic drive pump, magnetic assembly 3, bearing support 21, pump shaft 5 and bearing 6 in contact.
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 sets are between the bearing inner race 33 and bearing outer ring 31 of bearing 6, and sealing cover 7 is made by polytetrafluoroethylmaterial material.Polytetrafluoroethylmaterial material has the advantages such as friction factor is low, temperature tolerance good, acid-alkali-corrosive-resisting; when thering is the feed liquid contact bearing 6 of corrosivity or particle; the protection of the sealing cover 7 that polytetrafluoroethylmaterial material is made; can make the rolling element 32 of bearing 6 inside can not be subject to the impact of extraneous working medium, thereby guarantee that bearing 6 turns round more efficiently and works.
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 the magnetic drive pump application can be selected the bearing 6 that contains dissimilar rolling element 32.Under larger occasion, can consider to use roller bearing 6 in radial pressure; Use needle bearing 6 when narrow space.
Should be understood that, above-mentioned embodiment of the present invention is only for exemplary illustration or explain principle of the present invention, and is not construed as limiting the invention.Therefore, in the situation that any modification of making without departing from the spirit and scope of the present invention, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.In addition, claims of the present invention are intended to contain whole variations and the modification in the equivalents that falls into claims scope and border or this scope and border.
Claims (10)
1. a magnetic drive pump, it comprises:
Pump chamber, it is formed by pump case and separation sleeve sealing;
Interior magnetic assembly and the impeller driven by magnetic assembly in this;
Pump shaft and be sleeved on two bearings on this pump shaft, described bearing comprise bearing inner race, rolling element and bearing outer ring and be arranged on described bearing inner race and described bearing outer ring between for the protection of the sealing cover of described rolling element; And
Outer magnetic assembly, drive described interior magnetic assembly when rotating under driving force externally and rotate;
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.
2. magnetic drive pump as claimed in claim 1, it is characterized in that, be provided with the first axle sleeve and the second axle sleeve for fixing described pump shaft in described pump chamber, wherein said the first axle sleeve is arranged on described pump case, described the 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.
3. magnetic drive pump as claimed in claim 1, is characterized in that, is provided with the bearing support for fixing described bearing outer ring in described pump chamber, and described impeller and described interior magnetic assembly are fixedly attached to respectively the two ends of described pump shaft.
4. magnetic drive pump as described as any one in claim 1 to 3, is characterized in that, described rolling element is ball, roller or needle roller.
5. magnetic drive pump as claimed in claim 4, is characterized in that, described rolling element is made by pressureless sintering silicon carbide.
6. magnetic drive pump as claimed in claim 5, is characterized in that, described bearing inner race is made by pressureless sintering silicon carbide.
7. magnetic drive pump as claimed in claim 6, is characterized in that, described bearing outer ring is made by pressureless sintering silicon carbide.
8. magnetic drive pump as claimed in claim 4, is characterized in that, described sealing cover is made by teflon.
9. magnetic drive pump as claimed in claim 6, is characterized in that, described sealing cover is made by teflon.
10. magnetic drive pump as claimed in claim 7, is characterized in that, described sealing cover is made by 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 true CN103470514A (en) | 2013-12-25 |
| CN103470514B 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 |
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| CN (1) | CN103470514B (en) |
Cited By (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 |
| CN105041669A (en) * | 2015-08-05 | 2015-11-11 | 芜湖环球汽车配件有限公司 | Hot oil pump |
| CN105298855A (en) * | 2014-07-02 | 2016-02-03 | 泾县双氟泵阀技术服务有限公司 | Magnetic 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 (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103470514B (en) | 2016-03-02 |
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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 |