CN106321854B - The magnetic fluid seal device that permanent magnet radially magnetizes in the same direction - Google Patents
The magnetic fluid seal device that permanent magnet radially magnetizes in the same direction Download PDFInfo
- Publication number
- CN106321854B CN106321854B CN201610921850.4A CN201610921850A CN106321854B CN 106321854 B CN106321854 B CN 106321854B CN 201610921850 A CN201610921850 A CN 201610921850A CN 106321854 B CN106321854 B CN 106321854B
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- CN
- China
- Prior art keywords
- pole shoe
- permanent magnet
- sealing ring
- magnetic
- guiding loop
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The magnetic fluid seal device that permanent magnet radially magnetizes in the same direction, belongs to sealing field of mechanical engineering.Existing magnetic liquid rotating sealing device is solved under the less operating mode of axial dimension, because size limitation can not use enough permanent magnet and pole shoe, causes magnetic fluid seal device voltage endurance capability insufficient, so as to cause seal failure problem.The device by radially magnetize in the same direction permanent magnet, pole shoe, form every magnetic orientation ring etc..The magnetic fluid seal device that permanent magnet radially magnetizes in the same direction, because permanent magnet coordinates with pole shoe pole shoe is cylindrical, permanent magnet prevents take up axial dimension, the axial dimension of magnetic fluid seal device, and radial dimension unrestricted occasion smaller suitable for axial dimension can be reduced significantly in the case where not changing voltage endurance capability.
Description
Technical field
The invention belongs to sealing field of mechanical engineering, the less occasion of the axial space that is particularly suitable for use in.
Background technology
Magnetic fluid sealing is used widely because of the advantages that its zero leakage, long-life, low friction.But in practical application
In, some occasion axial spaces are smaller and radial space limits the use of traditional magnetic liquid sealing device without particular/special requirement.
Existing magnetic liquid rotating sealing device typical structure such as Publication No. CN202091519U and CN 1544834A patent institute
State, permanent magnet uses axial charging, and end face is N (S) pole of permanent magnet, and pole shoe and permanent magnet are axially distributed, axial dimension compared with
Greatly；And for example described in Publication No. CN105221753A patent, permanent magnet is axial charging, and permanent magnet and pole shoe radially divide
Cloth so that radial dimension is big, limits its use occasion.
The content of the invention
The technical problem to be solved in the invention is that existing magnetic fluid seal device is in the less operating mode of axial dimension
Under, because size limitation can not use enough permanent magnet and pole shoe, cause magnetic fluid seal device voltage endurance capability insufficient, from
And cause seal failure.Therefore the magnetic fluid seal device that a kind of permanent magnet radially magnetizes in the same direction is proposed.
The technical solution adopted for the present invention to solve the technical problems is：
The magnetic fluid seal device that permanent magnet radially magnetizes in the same direction, the device include：Shell, the first pole shoe, the first pole
Boots sealing ring, the first permanent magnet, the sealing ring of magnetic guiding loop first, magnetic guiding loop, first are every magnetic orientation ring, the second pole shoe, the second pole shoe
It is sealing ring, second close every magnetic orientation ring, the sealing ring of magnetic guiding loop second, the second permanent magnet, the sealing ring of magnetic guiding loop the 3rd, the 3rd pole shoe
Seal, the 3rd pole shoe, the 3rd are every magnetic orientation ring, the 4th pole shoe sealing ring, the 4th pole shoe, right end cap, magnetic liquid, gyroaxis；
Form the connection between each several part of the device：The first pole shoe sealing ring is arranged on cylindrical recessed of the first pole shoe
In groove, the first pole shoe with sealing ring is formed；The second pole shoe sealing ring is arranged in the cylindrical groove of the second pole shoe, is formed
The second pole shoe with sealing ring；The 3rd pole shoe sealing ring is arranged in the cylindrical groove of the 3rd pole shoe, forms band sealing ring
The 3rd pole shoe；The 4th pole shoe sealing ring is arranged in the cylindrical groove of the 4th pole shoe, forms the quadrupole with sealing ring
Boots；The sealing ring of magnetic guiding loop first, the sealing ring of magnetic guiding loop the 3rd are arranged in the groove of magnetic guiding loop inner circle, the magnetic guiding loop the
Two sealing rings are arranged in the cylindrical groove of magnetic guiding loop, form the magnetic guiding loop with sealing ring；
The magnetic guiding loop with sealing ring, the first permanent magnet, the first pole shoe with sealing ring, first are every magnetic orientation ring, band
Second pole shoe of sealing ring, the second magnetism-isolating loop, the second permanent magnet, the 3rd pole shoe with sealing ring, the 3rd are every magnetic orientation ring and band
4th pole shoe of sealing ring is sequentially placed into shell, the first permanent magnet and the left side of the first pole shoe is contacted with shell；It is described
Gyroaxis is inserted in shell, injects magnetic liquid to the device；It is connected through a screw thread and fixes right end cap and shell, each part is existed
Axially position is completed in shell；The positioning of shell is realized by the threaded connection on housing flange disk；
The device is enclosed on the cylindrical of pole shoe using the permanent magnet of radial magnetizing, reduces the axial dimension of sealing device, fits
It is smaller for axial space, and the unrestricted occasion of radial space.
First permanent magnet and the second permanent magnet use radial magnetizing and magnetizing direction is identical；First permanent magnet and
First pole shoe axial length is identical, and the second permanent magnet and the 3rd pole shoe axial length are identical；First permanent magnet, the second pole
Boots, the second permanent magnet and the 4th pole shoe outside diameter are identical；The outside diameter and the first permanent magnetism of first pole shoe, the 3rd pole shoe
Body, the interior circular diameter of the second permanent magnet are equal and coordinate for gap.
The present invention compares possessed beneficial effect with prior art：The magnetic fluid sealing that permanent magnet radially magnetizes in the same direction
Device, because permanent magnet coordinates with pole shoe pole shoe is cylindrical, permanent magnet prevents take up axial dimension, can not change voltage endurance capability
In the case of be reduced significantly the axial dimension of magnetic fluid seal device, it is smaller suitable for axial dimension and radial dimension is larger
Occasion.
Brief description of the drawings
The magnetic fluid seal device that Fig. 1 permanent magnets radially magnetize in the same direction.
In Fig. 1：Shell 1, the first pole shoe 2, the first pole shoe sealing ring 3, the first permanent magnet 4, the first sealing ring of magnetic guiding loop 5,
Magnetic guiding loop 6, first is every magnetic orientation ring 7, the second pole shoe 8, the second pole shoe sealing ring 9, second every magnetic orientation ring 10, magnetic guiding loop second
Sealing ring 11, the second permanent magnet 12, the sealing ring 13 of magnetic guiding loop the 3rd, the 3rd pole shoe sealing ring 14, the 3rd pole shoe the 15, the 3rd are every magnetic
Locating ring 16, the 4th pole shoe sealing ring 17, the 4th pole shoe 18, right end cap 19, magnetic liquid 20, gyroaxis 21.
Embodiment
Using accompanying drawing as embodiment, the present invention will be further described：
Magnetic fluid seal device such as Fig. 1 that permanent magnet radially magnetizes in the same direction, forming the device includes：Shell 1, the first pole
Boots 2, the first pole shoe sealing ring 3, the first permanent magnet 4, the first sealing ring of magnetic guiding loop 5, magnetic guiding loop 6, first are every magnetic orientation ring 7,
Diode boot 8, the second pole shoe sealing ring 9, second are every magnetic orientation ring 10, magnetic guiding loop the second sealing ring 11, the second permanent magnet 12, magnetic conduction
The sealing ring 13 of ring the 3rd, the 3rd pole shoe sealing ring 14, the 3rd pole shoe the 15, the 3rd every magnetic orientation ring 16, the 4th pole shoe sealing ring 17,
4th pole shoe 18, right end cap 19, magnetic liquid 20, gyroaxis 21；
Form the connection between each several part of the device：It is cylindrical that the first pole shoe sealing ring 3 is arranged on the first pole shoe 2
In groove, the first pole shoe with sealing ring is formed；The second pole shoe sealing ring 9 is arranged in the cylindrical groove of the second pole shoe 8,
Form the second pole shoe with sealing ring；The 3rd pole shoe sealing ring 14 is arranged in the cylindrical groove of the 3rd pole shoe 15, is formed
The 3rd pole shoe with sealing ring；The 4th pole shoe sealing ring 17 is arranged in the cylindrical groove of the 4th pole shoe 18, is formed with close
4th pole shoe of seal；First sealing ring of magnetic guiding loop 5, the sealing ring 13 of magnetic guiding loop the 3rd are arranged on the recessed of the inner circle of magnetic guiding loop 6
In groove, second sealing ring of magnetic guiding loop 11 is arranged in the cylindrical groove of magnetic guiding loop 6, forms the magnetic guiding loop with sealing ring；
The magnetic guiding loop with sealing ring, the first permanent magnet 4, the first pole shoe with sealing ring, first every magnetic orientation ring 7,
The second pole shoe with sealing ring, the second magnetism-isolating loop 10, the second permanent magnet 12, the 3rd pole shoe with sealing ring, the 3rd are every magnetic orientation
Ring 16 and the 4th pole shoe with sealing ring are sequentially placed into shell 1, make the left side of the first permanent magnet 4 and the first pole shoe 2 with it is outer
Shell 1 contacts；The gyroaxis 21 is inserted in shell 1, injects magnetic liquid 20 to the device；Be connected through a screw thread by right end cap 19 with
Shell 1 is fixed, and completes each part axially position in shell 1；Shell 1 is realized by the threaded connection on the ring flange of shell 1
Positioning；
Illustrate the composition of magnetic loop by taking the first permanent magnet 4 as an example below：The magnetic field that first permanent magnet 4 is sent from N poles, warp
First pole shoe 2, magnetic liquid 20, the second pole shoe 8, magnetic guiding loop 6 return to the S poles of the first permanent magnet 4, form closed magnetic loop.
The device is enclosed on the cylindrical of pole shoe using the permanent magnet of radial magnetizing, reduces the axial dimension of sealing device, fits
It is smaller for axial space, and the unrestricted occasion of radial space.
First permanent magnet 4 and the second permanent magnet 12 use radial magnetizing and magnetizing direction is identical, if interior annular is N
Pole, outer toroid is S poles or interior annular is S poles, and outer toroid is N poles；The axial length phase of first permanent magnet, 4 and first pole shoe 2
Together, the second permanent magnet 12 is identical with the axial length of the 3rd pole shoe 15；First permanent magnet, the second pole shoe, the second permanent magnet and
4th pole shoe outside diameter is identical and is equal to the inner circle radius of magnetic guiding loop 6；First pole shoe 2, the 3rd pole shoe 15 it is cylindrical straight
Footpath and the first permanent magnet 4, the interior circular diameter of the second permanent magnet 12 it is equal and for gap coordinate.
Pole shoe, gyroaxis 21, magnetic guiding loop 6 are from the good material of magnetic conductivity, such as electrical pure iron；
Permanent magnet selects neodymium iron boron；
Non-magnetic material, such as copper are selected every magnetic orientation ring；
The species of magnetic liquid 20 is according to use environment and the magnetic liquid of the different choice difference base load liquid of sealing medium.
Claims (3)
1. the magnetic fluid seal device that permanent magnet radially magnetizes in the same direction, it is characterised in that：The sealing device includes：Shell (1),
First pole shoe (2), the first pole shoe sealing ring (3), the first permanent magnet (4), the sealing ring of magnetic guiding loop first (5), magnetic guiding loop (6),
One every magnetic orientation ring (7), the second pole shoe (8), the second pole shoe sealing ring (9), second close every magnetic orientation ring (10), magnetic guiding loop second
Seal (11), the second permanent magnet (12), the sealing ring (13) of magnetic guiding loop the 3rd, the 3rd pole shoe sealing ring (14), the 3rd pole shoe (15),
3rd every magnetic orientation ring (16), the 4th pole shoe sealing ring (17), the 4th pole shoe (18), right end cap (19), magnetic liquid (20), return
Rotating shaft (21)；
Form the connection between each several part of the device：It is cylindrical that the first pole shoe sealing ring (3) is arranged on the first pole shoe (2)
In groove, the first pole shoe with sealing ring is formed；The second pole shoe sealing ring (9) is arranged on cylindrical recessed of the second pole shoe (8)
In groove, the second pole shoe with sealing ring is formed；The 3rd pole shoe sealing ring (14) is arranged on cylindrical recessed of the 3rd pole shoe (15)
In groove, the 3rd pole shoe with sealing ring is formed；The 4th pole shoe sealing ring (17) is arranged on cylindrical recessed of the 4th pole shoe (18)
In groove, the 4th pole shoe with sealing ring is formed；The sealing ring of magnetic guiding loop first (5), the installation of the sealing ring (13) of magnetic guiding loop the 3rd
In the groove of magnetic guiding loop (6) inner circle, the sealing ring of magnetic guiding loop second (11) is arranged in the cylindrical groove of magnetic guiding loop (6),
Form the magnetic guiding loop with sealing ring；
The magnetic guiding loop with sealing ring, the first permanent magnet (4), the first pole shoe with sealing ring, first every magnetic orientation ring (7),
The second pole shoe with sealing ring, second are every magnetic orientation ring (10), the second permanent magnet (12), the 3rd pole shoe with sealing ring, the 3rd
It is sequentially placed into every magnetic orientation ring (16) and the 4th pole shoe with sealing ring in shell (1), makes the first permanent magnet (4) and the first pole shoe
(2) left side contacts with shell (1)；The gyroaxis (21) is inserted in shell (1), injects magnetic liquid (20) to the device；
It is connected through a screw thread and fixes right end cap (19) and shell (1), each part is completed in the interior axially position of shell (1)；By outer
The positioning of shell (1) is realized in threaded connection on shell (1) ring flange；
The cylindrical of pole shoe is enclosed on using the permanent magnet of radial magnetizing, the axial dimension of sealing device is small；First permanent magnet (4) and
Two permanent magnets (12) use radial magnetizing and magnetizing direction is identical；First pole shoe (2), the outside diameter of the 3rd pole shoe (15) and
One permanent magnet (4), the interior circular diameter of the second permanent magnet (12) are equal and coordinate for gap.
2. the magnetic fluid seal device that permanent magnet radially magnetizes in the same direction according to claim 1, it is characterised in that：
First permanent magnet (4) is identical with the first pole shoe (2) axial length, and the second permanent magnet (12) and the 3rd pole shoe (15) are axially long
Spend identical.
3. the magnetic fluid seal device that permanent magnet radially magnetizes in the same direction according to claim 1, it is characterised in that：
First permanent magnet (4), the second pole shoe (8), the second permanent magnet (12) are identical with the 4th pole shoe (18) outside diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610921850.4A CN106321854B (en) | 2016-10-21 | 2016-10-21 | The magnetic fluid seal device that permanent magnet radially magnetizes in the same direction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610921850.4A CN106321854B (en) | 2016-10-21 | 2016-10-21 | The magnetic fluid seal device that permanent magnet radially magnetizes in the same direction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106321854A CN106321854A (en) | 2017-01-11 |
| CN106321854B true CN106321854B (en) | 2018-02-16 |
Family
ID=57818154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610921850.4A Expired - Fee Related CN106321854B (en) | 2016-10-21 | 2016-10-21 | The magnetic fluid seal device that permanent magnet radially magnetizes in the same direction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106321854B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930795B (en) * | 2018-09-03 | 2023-05-05 | 广西科技大学 | Mixed concave-convex magnetic fluid sealing device |
| CN109185464B (en) * | 2018-10-24 | 2020-07-17 | 广西科技大学 | Magnetic conduction cylinder stepped magnetic fluid sealing device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4630943A (en) * | 1983-10-27 | 1986-12-23 | Ferrofluidics Corporation | Ferrofluid bearing and seal apparatus |
| SU1756699A1 (en) * | 1990-08-31 | 1992-08-23 | Самарский филиал Научно-исследовательского института технологии и организации производства двигателей | Seal |
| US6199867B1 (en) * | 1997-09-30 | 2001-03-13 | Rigaku/Usa, Inc. | Rotary motion feedthrough device |
| US7129609B1 (en) * | 2005-08-30 | 2006-10-31 | Ferrolabs, Inc. | Magneto-fluidic seal with wide working temperature range |
| CN202228685U (en) * | 2011-08-25 | 2012-05-23 | 四川环能德美科技股份有限公司 | Sealing device of magnetic liquid |
| RU128269U1 (en) * | 2012-11-22 | 2013-05-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ивановский государственный энергетический университет имени В.И. Ленина" (ИГЭУ) | MAGNET FLUID SEAL |
| CN103343821B (en) * | 2013-06-25 | 2015-09-16 | 南京旋妙机械设备有限公司 | Be applicable to high-revolving magnetic fluid movable sealing structure |
| CN103557335B (en) * | 2013-11-11 | 2015-12-02 | 北京交通大学 | Gas-filled type magnetic liquid rotating sealing device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1827486C (en) * | 1991-04-11 | 1993-07-15 | Центральное специализированное конструкторское бюро | Magnetoliquid seal |
| RU1800181C (en) * | 1991-04-11 | 1993-03-07 | Центральное специализированное конструкторское бюро | Magnetic fluid seal |
-
2016
- 2016-10-21 CN CN201610921850.4A patent/CN106321854B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4630943A (en) * | 1983-10-27 | 1986-12-23 | Ferrofluidics Corporation | Ferrofluid bearing and seal apparatus |
| SU1756699A1 (en) * | 1990-08-31 | 1992-08-23 | Самарский филиал Научно-исследовательского института технологии и организации производства двигателей | Seal |
| US6199867B1 (en) * | 1997-09-30 | 2001-03-13 | Rigaku/Usa, Inc. | Rotary motion feedthrough device |
| US7129609B1 (en) * | 2005-08-30 | 2006-10-31 | Ferrolabs, Inc. | Magneto-fluidic seal with wide working temperature range |
| CN202228685U (en) * | 2011-08-25 | 2012-05-23 | 四川环能德美科技股份有限公司 | Sealing device of magnetic liquid |
| RU128269U1 (en) * | 2012-11-22 | 2013-05-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ивановский государственный энергетический университет имени В.И. Ленина" (ИГЭУ) | MAGNET FLUID SEAL |
| CN103343821B (en) * | 2013-06-25 | 2015-09-16 | 南京旋妙机械设备有限公司 | Be applicable to high-revolving magnetic fluid movable sealing structure |
| CN103557335B (en) * | 2013-11-11 | 2015-12-02 | 北京交通大学 | Gas-filled type magnetic liquid rotating sealing device |
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| Publication number | Publication date |
|---|---|
| CN106321854A (en) | 2017-01-11 |
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