CN103133700B - A kind of magnetic liquid rotating sealing device - Google Patents
A kind of magnetic liquid rotating sealing device Download PDFInfo
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- CN103133700B CN103133700B CN201310090762.0A CN201310090762A CN103133700B CN 103133700 B CN103133700 B CN 103133700B CN 201310090762 A CN201310090762 A CN 201310090762A CN 103133700 B CN103133700 B CN 103133700B
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- pole shoe
- permanent magnet
- magnetic liquid
- tooth
- shoe
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Abstract
A kind of magnetic liquid rotating sealing device, belongs to sealing field of mechanical engineering.The pole tooth difficulty of processing solved on the pole shoe of existing magnetic liquid rotating sealing device is large, fragile when mounted, affects the problem of sealability.This device is an end contact of Topland by left pole shoe (2) pole tooth and permanent magnet (3), another end face of permanent magnet (3) contacts with the Topland of right pole shoe (4) pole tooth, loads in housing (1).End cap (6) is close to the left side of right pole shoe, end cap and housing is linked together, realize axial restraint with screw (5).Magnetic liquid is injected into the endoporus of permanent magnet circumferentially.In the endoporus formed after left pole shoe described in seal shaft (9) is loaded, permanent magnet, the assembling of right pole shoe.Left and right pole shoe has shoulder hole, an anchor ring of left and right pole shoe offers pole tooth.
Description
Technical field
The invention belongs to sealing field of mechanical engineering.
Background technique
Magnetic liquid is a kind of stable new function material formed in base load liquid by nano level magnetic-particle highly dispersed.Sealing is an important applied field of magnetic liquid.Magnetic fluid sealing technology due to its have zero leakage, mechanical wearing and tearing, the life-span is long, advantages of simple structure and simple gradually use by increasing industry.The pole tooth of the pole shoe of existing magnetic liquid rotating sealing device is located on its endoporus, and difficulty of processing is large, and easy and seal shaft collides thus causes damage when mounted, affects sealability.
Summary of the invention
The technical issues that need to address of the present invention are, the pole tooth of the pole shoe of existing magnetic liquid rotating sealing device is located on endoporus, and difficulty of processing is large, and easy and seal shaft collides thus causes damage when mounted, affects sealability.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of magnetic liquid rotating sealing device, the connection between each several part forming this device:
This device the first rubber seal is embedded in the Baltimore groove on left pole shoe excircle, the second rubber seal embedded in the Baltimore groove on right pole shoe excircle.
By the Topland of left pole shoe pole tooth and an end contact of permanent magnet, another end face of permanent magnet contacts with the Topland of right pole shoe pole tooth, loads in housing together.
End cap is close to the left side of right pole shoe, end cap and housing is linked together, realize axial restraint with screw.
Magnetic liquid is injected into the endoporus of permanent magnet circumferentially.
In the endoporus formed after left pole shoe described in seal shaft is loaded, permanent magnet, the assembling of right pole shoe.
Described left pole shoe has shoulder hole, and an anchor ring of left pole shoe offers pole tooth.
Right pole shoe is identical with left pole shoe structure.
The present invention compares had beneficial effect with prior art:
Left and right of the present invention pole shoe has shoulder hole, an anchor ring of left and right pole shoe offers pole tooth, make on the end face of pole shoe, form the uneven Magnetic field distribution of magnetic intensity, because pole shoe is that high permeability material is made, therefore in seal clearance, form the uneven Magnetic field distribution of magnetic intensity, be injected into permanent magnet endoporus magnetic liquid circumferentially, under the influence of a magnetic field, be adsorbed in the gap of the magnetic conductive loop that left and right pole shoe and seal shaft are formed.When the effect of magnetic liquid pressure difference, can move in non-uniform magnetic field, at this moment uneven magnetic field will make magnetic liquid create antagonism pressure reduction magnetic force so that reach new balance, form reliable sealing.The difficulty of processing of pole shoe reduces, not fragile when mounted, improves the reliability of seal arrangement.
Accompanying drawing explanation
Fig. 1 magnetic liquid rotating sealing device structural drawing.
The left and right pole shoe plan view of Fig. 2.
In figure: housing 1, left pole shoe 2, permanent magnet 3, right pole shoe 4, screw 5, end cap 6, second rubber seal 7, first rubber seal 8, seal shaft 9.
Embodiment
Be that the invention will be further described for embodiment with accompanying drawing:
A kind of magnetic liquid rotating sealing device, as Fig. 1, the connection between each several part forming this device:
This device the first rubber seal 8 is embedded in the Baltimore groove on left pole shoe 2 excircle, the second rubber seal 7 embedded in the Baltimore groove on right pole shoe 4 excircle.
By the Topland of left pole shoe 2 pole tooth and an end contact of permanent magnet, another end face of permanent magnet 3 contacts with the Topland of right pole shoe 4 pole tooth, loads in housing 1 together.
End cap 6 is close to the left side of right pole shoe 4, end cap 6 and housing 1 is linked together, realize axial restraint with screw 5.
Magnetic liquid is injected into the endoporus of permanent magnet 3 circumferentially.
Seal shaft 9 is loaded described left pole shoe 2, permanent magnet 3, right pole shoe 4 assemble in the endoporus of rear formation, seal shaft 9 and its hole are Spielpassung, and gap is 0.05mm ~ 0.2mm.
Described left pole shoe 2 has shoulder hole, and an anchor ring of left pole shoe 2 offers pole tooth.
Right pole shoe 4 is identical with left pole shoe 2 structure.
The number of described pole tooth is 4 ~ 6, and the facewidth gets 0.3mm ~ 0.5mm, and tooth depth gets 2mm ~ 3mm.The number of pole tooth gets its end value or any integer value in the middle of it.The value of the facewidth and tooth depth gets its end value or the arbitrary value in the middle of it.
Described left pole shoe 2 and the material selection electrical pure iron of right pole shoe 4.
Housing 1, end cap 6 adopt nonmagnetic substance such as stainless steel to make.
Permanent magnet 3 selects rubidium iron boron.
Material selection No. 45 steel of seal shaft 9.
The kind of magnetic liquid, according to the magnetic liquid of sealing gas base load liquid different from the different choice of ambient temperature, can select Kerosene-Base Magnetic Fluid or machine oil based magnetic liquid usually.
Claims (2)
1. a magnetic liquid rotating sealing device, the connection between each several part forming this device:
This device embeds in the Baltimore groove on left pole shoe (2) excircle by the first rubber seal (8), the second rubber seal (7) embedded in the Baltimore groove on right pole shoe (4) excircle;
Successively described left pole shoe (2), permanent magnet (3), right pole shoe (4) are loaded in housing (1);
End cap (6) is close to the right side of right pole shoe (4), end cap (6) and housing (1) is linked together, realize axial restraint with screw (5);
Magnetic liquid is injected into the endoporus of permanent magnet (3) circumferentially;
In the endoporus formed after left pole shoe (2) described in being loaded by seal shaft (9), permanent magnet (3), right pole shoe (4) assembling, seal shaft (9) and endoporus are Spielpassung;
It is characterized in that:
Described left pole shoe (2) has shoulder hole, and an end face of left pole shoe (2) offers pole tooth;
Described right pole shoe (4) is identical with left pole shoe (2) structure;
During assembling, the Topland of left pole shoe (2) pole tooth and an end contact of permanent magnet (3), another end face of permanent magnet (3) contacts with the Topland of right pole shoe (4) pole tooth.
2. a kind of magnetic liquid rotating sealing device according to claim 1, is characterized in that:
The number of described pole tooth is 4 ~ 6, and the facewidth gets 0.3 ~ 0.5mm, and tooth depth gets 2 ~ 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310090762.0A CN103133700B (en) | 2013-03-21 | 2013-03-21 | A kind of magnetic liquid rotating sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310090762.0A CN103133700B (en) | 2013-03-21 | 2013-03-21 | A kind of magnetic liquid rotating sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103133700A CN103133700A (en) | 2013-06-05 |
| CN103133700B true CN103133700B (en) | 2015-09-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310090762.0A Expired - Fee Related CN103133700B (en) | 2013-03-21 | 2013-03-21 | A kind of magnetic liquid rotating sealing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN103133700B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939618B (en) * | 2014-04-29 | 2016-01-20 | 北京交通大学 | The magnetic fluid seal device of porous pole shoe |
| CN103925372B (en) * | 2014-05-04 | 2015-07-22 | 北京交通大学 | Brush type magnetic liquid sealing device |
| CN104455462A (en) * | 2014-09-29 | 2015-03-25 | 北京交通大学 | Magnetic liquid sealing device with labyrinth structure formed in pole shoes |
| CN105200517A (en) * | 2015-10-29 | 2015-12-30 | 江苏美科硅能源有限公司 | Heightening device for increasing feeding amount of polycrystal furnace |
| CN106224556B (en) * | 2016-05-25 | 2018-03-13 | 广西科技大学 | A kind of more magnetic source end-surface type magnetic fluid seal devices |
| CN106224557B (en) * | 2016-05-25 | 2018-03-20 | 广西科技大学 | One kind mixing supplies magnetic-type end-surface type magnetic fluid seal device |
| CN106015586B (en) * | 2016-07-29 | 2017-09-29 | 广西科技大学 | A kind of stepped end-surface type magnetic fluid seal device |
| CN109595345B (en) * | 2019-01-24 | 2023-12-12 | 清华大学 | Magnetic liquid sealing device with function of preventing non-magnetic substance from pollution |
| CN113108064B (en) * | 2021-04-29 | 2022-03-25 | 北京交通大学 | Modularized magnetic liquid sealing device |
| CN113280186B (en) * | 2021-06-11 | 2022-04-01 | 北京交通大学 | Magnetic powder throttle valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4304411A (en) * | 1980-04-17 | 1981-12-08 | Mechanical Technology Incorporated | Magnetic/centrifugal-fluid seal |
| SU892075A1 (en) * | 1980-04-21 | 1981-12-23 | Ивановский энергетический институт им.В.И.Ленина | Magnetic liquid sealing |
| CN101799075A (en) * | 2010-04-12 | 2010-08-11 | 北京交通大学 | Rotation shaft combined sealing device |
| CN102182830A (en) * | 2011-05-05 | 2011-09-14 | 北京交通大学 | Rotary sealing device for magnetic liquid |
| CN202091519U (en) * | 2011-05-20 | 2011-12-28 | 北京交通大学 | Magnetic liquid rotating sealing device |
| CN102494855A (en) * | 2011-12-06 | 2012-06-13 | 北京交通大学 | Leakage detection device for large-diameter rotary sealing shell of magnetic liquid |
| CN102518811A (en) * | 2011-12-15 | 2012-06-27 | 北京交通大学 | Magnetic fluid sealing structure |
| CN102537366A (en) * | 2012-01-05 | 2012-07-04 | 北京交通大学 | Sealing method for split type magnetic liquid sealing device |
-
2013
- 2013-03-21 CN CN201310090762.0A patent/CN103133700B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4304411A (en) * | 1980-04-17 | 1981-12-08 | Mechanical Technology Incorporated | Magnetic/centrifugal-fluid seal |
| SU892075A1 (en) * | 1980-04-21 | 1981-12-23 | Ивановский энергетический институт им.В.И.Ленина | Magnetic liquid sealing |
| CN101799075A (en) * | 2010-04-12 | 2010-08-11 | 北京交通大学 | Rotation shaft combined sealing device |
| CN102182830A (en) * | 2011-05-05 | 2011-09-14 | 北京交通大学 | Rotary sealing device for magnetic liquid |
| CN202091519U (en) * | 2011-05-20 | 2011-12-28 | 北京交通大学 | Magnetic liquid rotating sealing device |
| CN102494855A (en) * | 2011-12-06 | 2012-06-13 | 北京交通大学 | Leakage detection device for large-diameter rotary sealing shell of magnetic liquid |
| CN102518811A (en) * | 2011-12-15 | 2012-06-27 | 北京交通大学 | Magnetic fluid sealing structure |
| CN102537366A (en) * | 2012-01-05 | 2012-07-04 | 北京交通大学 | Sealing method for split type magnetic liquid sealing device |
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| CN103133700A (en) | 2013-06-05 |
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Granted publication date: 20150930 Termination date: 20200321 |