CN105656285A - Magnetic actuator capable of effectively preventing effect exerted by magnetic field on life of bearings - Google Patents
Magnetic actuator capable of effectively preventing effect exerted by magnetic field on life of bearings Download PDFInfo
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- CN105656285A CN105656285A CN201410632396.1A CN201410632396A CN105656285A CN 105656285 A CN105656285 A CN 105656285A CN 201410632396 A CN201410632396 A CN 201410632396A CN 105656285 A CN105656285 A CN 105656285A
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- magnetic
- conduction sheet
- vacuum chamber
- magnetic conduction
- bearing
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Abstract
The invention relates to the field of a vacuum technology and specifically relates to a magnetic actuator capable of effectively preventing an effect exerted by a magnetic field on the life of bearings. The magnetic actuator comprises a vacuum chamber, an external rotor, an internal rotor, the bearings, a rotation sleeve, a magnetic conduction sheet I, a magnetic conduction sheet II, a magnetic conduction sheet III and a rotation shaft, wherein one end of the rotation shaft is inserted into the vacuum chamber and is connected with the inner wall at the upper end and the lower end of the vacuum chamber, the internal rotator is arranged in the vacuum chamber and is fixedly connected with the rotation shaft, the rotation sleeve is rotationally installed at the outer side of the vacuum chamber through the bearings and is fixedly connected with the rotation shaft, the external rotor is arranged between the rotation sleeve and the vacuum chamber and is connected with the inner wall of the rotation sleeve, the two ends of the internal rotor are respectively provided with the magnetic conduction sheet I and the magnetic conduction sheet II, one end of the external rotor is axially limited through a rabbet in the rotation sleeve, and the other end of the external rotor is provided with the magnetic conduction sheet III. The magnetic actuator provided by the invention can effectively shield the effect exerted by the magnetic field on internal and external bearings, reduce the magnetic field intensity nearby the bearings to the lowest and can greatly prolong the service life of the bearings.
Description
Technical field
The present invention relates to technical field of vacuum, specifically a kind of can effectively prevent the magnetic field magnetic driver to bearing aging effects.
Background technology
At present, in vacuum design field, it is common to adopt a kind of magnetic transmission seal, namely adopt permanent magnet material, surpassing from characteristic by magnetic force between driving link and driven member is made, it is achieved contactless, No leakage transmits a kind of technology of moment of torsion. The device realizing this technology is called magnetic driver. " vacuum design handbook " the 3. version 561 pages describes the CZM series magnetic driver that Gansu science Academy magnetic device institute produces, from the accompanying drawing of handbook it can be seen that at this magnetic driver, it is a kind of coaxial type permanent magnet magnetic force driver, internal rotor and outer rotor forms " combination push-and-pull magnetic circuit " structure. Rotary magnet, outside vacuum chamber, drives with hands or motor, as shown in Figure 1. Being vacuum environment inside magnetic driver, the bearing at internal rotor two ends is required for cleaning of deoiling before assembly, it does not have the bearing of grease protection can shorten service life. But, the bearing at outer rotor two ends also it is frequently necessary to change, and reason is the bearing under magnetic field environment works, and owing to magnetic field causes the generation of micro-electric current, when there being micro-electric current, the failure mode of bearing has galvanic corrosion, corrugated abrasion. Under the influence of a magnetic field, its working life is significantly lower than the bearing life under normal condition for bearing.
Summary of the invention
For the problems referred to above, it is an object of the invention to provide and a kind of can effectively prevent the magnetic field magnetic driver to bearing aging effects.
To achieve these goals, the present invention is by the following technical solutions:
A kind of can effectively prevent the magnetic field magnetic driver to bearing aging effects, including vacuum chamber, outer rotor, internal rotor, bearing, turning set, magnetic conduction sheet I, magnetic conduction sheet II, magnetic conduction sheet III and rotating shaft, one end of its shaft is inserted in vacuum chamber, and be connected with the inwall of two ends up and down of vacuum chamber by bearing, described internal rotor is arranged in vacuum chamber, and it is fixed in rotating shaft, described turning set is rotatably installed in the outside of vacuum chamber by bearing, and connect firmly with rotating shaft, described outer rotor is arranged between turning set and vacuum chamber, and be connected with the inwall of turning set, described internal rotor be respectively arranged at two ends with magnetic conduction sheet I and magnetic conduction sheet III, one end of described outer rotor is by the seam axial limiting in turning set, the other end is provided with magnetic conduction sheet II.
Described vacuum chamber adopts nonmagnetic body material to make, and described outer rotor and internal rotor adopt rare earth permanent-magnetic material, form cylindrical magnetic circuit. Described turning set, magnetic conduction sheet I, magnetic conduction sheet II and magnetic conduction sheet III are magnet material and make.
Advantages of the present invention and providing the benefit that: the present invention installs magnetic conduction sheet, the impact of the internal outer bearing of effective armoured magnetic field at the end face of internal rotor and outer rotor, the magnetic field intensity near bearing is preferably minimized, just can be greatly prolonged the working life of bearing.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing magnetic driver;
Fig. 2 is the structural representation of the present invention;
Fig. 3 is cylinder type magnetic circuit combinative structure schematic diagram.
Wherein: 1 is vacuum chamber, 2 is outer rotor, and 3 is internal rotor, and 4 is bearing, and 5 is turning set, and 6 is magnetic conduction sheet I, and 7 is magnetic conduction sheet II, and 8 is magnetic conduction sheet III, and 9 is rotating shaft.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 2, the present invention includes vacuum chamber 1, outer rotor 2, internal rotor 3, bearing 4, turning set 5, magnetic conduction sheet I6, magnetic conduction sheet II7 and magnetic conduction sheet III8, one end of its shaft 9 is inserted in vacuum chamber 1 and is connected with the inwall of two ends up and down of vacuum chamber 1 by bearing 4, described internal rotor 3 is arranged in vacuum chamber 1 and is fixed in rotating shaft 9, and described turning set 5 is rotatably installed in the outside of vacuum chamber 1 by bearing 4 and is connected firmly with rotating shaft 9. Described outer rotor 2 is arranged between turning set 5 with vacuum chamber 1 and is connected with the inwall of turning set 5, described internal rotor 3 be respectively arranged at two ends with magnetic conduction sheet I6 and magnetic conduction sheet III8, one end of described outer rotor 2 is by the seam axial limiting in turning set 5, and the other end is provided with magnetic conduction sheet II7.
As it is shown on figure 3, described vacuum chamber 1 adopts nonmagnetic body material to make, described outer rotor 2 and internal rotor 3 adopt rare earth permanent-magnetic material, form cylindrical magnetic circuit. Described turning set 5, magnetic conduction sheet I6, magnetic conduction sheet II7 and magnetic conduction sheet III8 are magnet material and make.
The operation principle of the present invention is:
Described outer rotor 2 and internal rotor 3 form " combination push-and-pull magnetic circuit " structure, manually or motor drive rotary motion set 5, the internal rotor 3 in vacuum chamber 1 is driven to rotate, wherein vacuum chamber 1 selects nonmagnetic body material to make, described outer rotor 2 and internal rotor 3 select rare earth permanent-magnetic material, form cylindrical magnetic circuit. Described turning set 5, magnetic conduction sheet I6, magnetic conduction sheet II7 and magnetic conduction sheet III8 are magnet material (DT4, ferritic stainless steel etc.) and make, it is fitted in outer rotor 2 and the upper and lower end face of internal rotor 3 respectively, can effectively eliminate the negative effect to bearing 4 of the above-mentioned cylindrical magnetic circuit, magnetic field intensity near bearing is preferably minimized, just can be greatly prolonged the working life of bearing.
Claims (3)
1. one kind can effectively prevent the magnetic field magnetic driver to bearing aging effects, it is characterized in that: include vacuum chamber (1), outer rotor (2), internal rotor (3), bearing (4), turning set (5), magnetic conduction sheet I (6), magnetic conduction sheet II (7), magnetic conduction sheet III (8) and rotating shaft (9), one end of its shaft (9) is inserted in vacuum chamber (1), and be connected with the inwall of two ends up and down of vacuum chamber (1) by bearing (4), described internal rotor (3) is arranged in vacuum chamber (1), and it is fixed in rotating shaft (9), described turning set (5) is rotatably installed in the outside of vacuum chamber (1) by bearing (4), and connect firmly with rotating shaft (9), described outer rotor (2) is arranged between turning set (5) and vacuum chamber (1), and be connected with the inwall of turning set (5), described internal rotor (3) be respectively arranged at two ends with magnetic conduction sheet I (6) and magnetic conduction sheet III (8), one end of described outer rotor (2) is by the seam axial limiting in turning set (5), the other end is provided with magnetic conduction sheet II (7).
2. by can effectively prevent the magnetic field magnetic driver to bearing aging effects described in claim 1, it is characterized in that: described vacuum chamber (1) adopts nonmagnetic body material to make, described outer rotor (2) and internal rotor (3) adopt rare earth permanent-magnetic material, form cylindrical magnetic circuit.
3. by can effectively prevent the magnetic field magnetic driver to bearing aging effects described in claim 2, it is characterised in that: described turning set (5), magnetic conduction sheet I (6), magnetic conduction sheet II (7) and magnetic conduction sheet III (8) are magnet material and make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410632396.1A CN105656285A (en) | 2014-11-11 | 2014-11-11 | Magnetic actuator capable of effectively preventing effect exerted by magnetic field on life of bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410632396.1A CN105656285A (en) | 2014-11-11 | 2014-11-11 | Magnetic actuator capable of effectively preventing effect exerted by magnetic field on life of bearings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105656285A true CN105656285A (en) | 2016-06-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410632396.1A Pending CN105656285A (en) | 2014-11-11 | 2014-11-11 | Magnetic actuator capable of effectively preventing effect exerted by magnetic field on life of bearings |
Country Status (1)
| Country | Link |
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| CN (1) | CN105656285A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2308737Y (en) * | 1997-09-05 | 1999-02-24 | 中国科学院沈阳科学仪器研制中心 | Small magnetic shaft |
| JPH1189163A (en) * | 1997-09-08 | 1999-03-30 | Toshiba Corp | Bearing device of rotary electric machine |
| CN101325360A (en) * | 2008-07-14 | 2008-12-17 | 大连理工大学 | Magnetic force driver |
| CN101698304A (en) * | 2009-09-29 | 2010-04-28 | 大连理工大学 | Magnetic inductive magnetic transmitter |
| CN101958635A (en) * | 2010-05-06 | 2011-01-26 | 东莞宏威数码机械有限公司 | Vacuum magnetic transmission mechanism |
| CN202218112U (en) * | 2011-08-16 | 2012-05-09 | 焦耀峰 | Structure for preventing permanent magnet motor bearing from ablation |
| CN202679204U (en) * | 2012-05-25 | 2013-01-16 | 福建尤迪电机制造有限公司 | Novel high power permanent magnetism brushless motor |
| CN103758766A (en) * | 2012-06-22 | 2014-04-30 | Skf磁性机械技术公司 | Compact electric centrifugal compressor |
-
2014
- 2014-11-11 CN CN201410632396.1A patent/CN105656285A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2308737Y (en) * | 1997-09-05 | 1999-02-24 | 中国科学院沈阳科学仪器研制中心 | Small magnetic shaft |
| JPH1189163A (en) * | 1997-09-08 | 1999-03-30 | Toshiba Corp | Bearing device of rotary electric machine |
| CN101325360A (en) * | 2008-07-14 | 2008-12-17 | 大连理工大学 | Magnetic force driver |
| CN101698304A (en) * | 2009-09-29 | 2010-04-28 | 大连理工大学 | Magnetic inductive magnetic transmitter |
| CN101958635A (en) * | 2010-05-06 | 2011-01-26 | 东莞宏威数码机械有限公司 | Vacuum magnetic transmission mechanism |
| CN202218112U (en) * | 2011-08-16 | 2012-05-09 | 焦耀峰 | Structure for preventing permanent magnet motor bearing from ablation |
| CN202679204U (en) * | 2012-05-25 | 2013-01-16 | 福建尤迪电机制造有限公司 | Novel high power permanent magnetism brushless motor |
| CN103758766A (en) * | 2012-06-22 | 2014-04-30 | Skf磁性机械技术公司 | Compact electric centrifugal compressor |
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Application publication date: 20160608 |
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| WD01 | Invention patent application deemed withdrawn after publication |