CN106402398A - Magnetic liquid sealing device without pole shoe - Google Patents
Magnetic liquid sealing device without pole shoe Download PDFInfo
- Publication number
- CN106402398A CN106402398A CN201610921970.4A CN201610921970A CN106402398A CN 106402398 A CN106402398 A CN 106402398A CN 201610921970 A CN201610921970 A CN 201610921970A CN 106402398 A CN106402398 A CN 106402398A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- permanent magnet
- sealing ring
- guiding loop
- pole shoe
- Prior art date
- 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.)
- Pending
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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 invention provides a magnetic liquid sealing device without a pole shoe, and belongs to the field of sealing for mechanical engineering. By adoption of the magnetic liquid sealing device without the pole shoe, the problems that an existing magnetic liquid sealing device cannot meet design requirements under the small space dimension working condition due to dimension limitation, the pressure-resisting capacity of the magnetic liquid sealing device is insufficient consequentially, and a seal failure is caused are solved. The magnetic liquid sealing device without the pole shoe comprises a shell (1), a first permanent magnet (2), a magnetism-conducting loop (3), a first magnetism-conducting loop sealing ring (4), a magnetism-isolating positioning loop (5), a second magnetism-conducting loop sealing ring (6), a second permanent magnet (7), a third magnetism-conducting loop sealing ring (8), a right end cover (9), magnetic liquid (10), a shaft sleeve (11), a shaft sleeve sealing ring (12), and a rotating shaft (13). According to the magnetic liquid sealing device without the pole shoe, since the pole shoe for forming a magnetic loop is not needed, the space dimension of the magnetic liquid sealing device can be obviously reduced under the condition that the pressure-resisting capacity is not changed, and the magnetic liquid sealing device without the pole shoe is suitable for small space dimension occasions.
Description
Technical field
The invention belongs to sealing field of mechanical engineering, it is particularly suited for the less sealing device of bulk.
Background technology
The advantages of magnetic fluid sealing is because of its zero leakage, long-life, low friction is used widely.But in practical application
In, some occasion bulks are less, limit the use of traditional magnetic liquid sealing device.Existing magnetic liquid rotatory sealing
As described in the patent of Publication No. CN 202091519U and CN 1544834A, permanent magnet is filled device typical structure using axial direction
Magnetic, end face is N (S) pole of permanent magnet, and pole shoe and permanent magnet are axially distributed, and axial dimension is larger；And for example Publication No. CN
Described in the patent of 105221753A, permanent magnet be axial charging, permanent magnet and pole shoe radially distributed so that radial dimension relatively
Greatly, limit its use occasion.
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 bulk
Under, because size limitation can not meet design requirement, lead to magnetic fluid seal device voltage endurance capability not enough, thus leading to seal
Lost efficacy.It is proposed that a kind of magnetic fluid seal device of no pole shoe.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of magnetic fluid seal device of no pole shoe, this device includes：Shell, the first permanent magnet, magnetic guiding loop, magnetic guiding loop
First sealing ring, every magnetic orientation ring, magnetic guiding loop second sealing ring, the second permanent magnet, magnetic guiding loop the 3rd sealing ring, right end cap, magnetic
Property liquid, axle sleeve, sleeve sealing circle, gyroaxis；
Constitute the connection between each several part of this device：Described sleeve sealing circle is arranged in the groove of axle sleeve inner circle, structure
Become the axle sleeve with sealing ring；Described magnetic guiding loop first sealing ring, magnetic guiding loop the 3rd sealing ring are arranged on the groove of magnetic guiding loop inner circle
Interior, described magnetic guiding loop second sealing ring is arranged in the cylindrical groove of magnetic guiding loop, constitutes the magnetic guiding loop with sealing ring；
The described axle sleeve with sealing ring is enclosed within gyroaxis, completes the positioning of the axle sleeve with sealing ring using trip bolt；
Described casing on gyroaxis, by the magnetic guiding loop with sealing ring, the first permanent magnet, every magnetic orientation ring, the second permanent magnet successively
Put into shell, inject magnetic liquid thereto, cover right end cap, complete axially position using threaded；Method using shell
The threaded positioning completing shell of blue disk.
Described sealing device does not contain pole shoe, does not form magnetic loop by pole shoe, reduces the size of sealing device, is suitable for
In the less occasion in space.
Using radial magnetizing and magnetizing direction is contrary for described first permanent magnet and the second permanent magnet；Described first permanent magnet and
Second magnet size parameter is identical；The outside diameter of described first permanent magnet and the second permanent magnet and the interior circular diameter of magnetic guiding loop
Equal and for gap cooperation.
The present invention compares with prior art and is had the advantage that：A kind of magnetic fluid seal device of no pole shoe, by
In not using pole shoe to form magnetic loop, magnetic fluid seal device can be reduced significantly in the case of not changing voltage endurance capability
Bulk is it is adaptable to the less occasion of bulk.
Brief description
A kind of magnetic fluid seal device of no pole shoe of Fig. 1；
In Fig. 1：Shell 1, the first permanent magnet 2, magnetic guiding loop 3, magnetic guiding loop the first sealing ring 4, every magnetic orientation ring 5, magnetic guiding loop
Second sealing ring 6, the second permanent magnet 7, magnetic guiding loop the 3rd sealing ring 8, right end cap 9, magnetic liquid 10, axle sleeve 11, sleeve sealing
Circle 12, gyroaxis 13.
Specific embodiment
With accompanying drawing, for specific embodiment, the present invention will be further described：
A kind of magnetic fluid seal device of no pole shoe, such as Fig. 1.Constitute this device to include：Shell 1, the first permanent magnet 2,
Magnetic guiding loop 3, magnetic guiding loop the first sealing ring 4, every magnetic orientation ring 5, magnetic guiding loop the second sealing ring 6, the second permanent magnet 7, magnetic guiding loop
Three sealing rings 8, right end cap 9, magnetic liquid 10, axle sleeve 11, sleeve sealing circle 12, gyroaxis 13.
Constitute the connection between each several part of this device：Described sleeve sealing circle 12 is arranged on the groove of axle sleeve 11 inner circle
Interior, constitute the axle sleeve with sealing ring；Described magnetic guiding loop the first sealing ring 4, magnetic guiding loop the 3rd sealing ring 8 are arranged in magnetic guiding loop 3
In the groove of circle, described magnetic guiding loop the second sealing ring 6 is arranged in the cylindrical groove of magnetic guiding loop 3, constitutes the magnetic conduction with sealing ring
Ring；
The described axle sleeve with sealing ring is enclosed within gyroaxis 13, completes determining of the axle sleeve with sealing ring using trip bolt
Position；Described shell 1 is enclosed within gyroaxis 13, the described magnetic guiding loop with sealing ring, the first permanent magnet 2, every magnetic orientation ring 5, second
Permanent magnet 7 is sequentially placed into shell 1, injects magnetic liquid 10 thereto, covers right end cap 9, completes axially to determine using threaded
Position；Using the threaded positioning completing shell 1 of the ring flange of shell 1.
It is briefly described as follows the composition of magnetic loop：The magnetic field that first permanent magnet 2 sends from N pole, through magnetic liquid 10, axle sleeve
11st, magnetic liquid 10 reaches the S pole of the second permanent magnet 7；The magnetic field that second permanent magnet 7 sends from N pole returns to first through magnetic guiding loop 3
The S pole of permanent magnet 2, forms closed magnetic loop.
Described sealing device do not contain pole shoe, not by pole shoe formed magnetic loop, reduce the size of sealing device it is adaptable to
The less occasion in space；Using radial magnetizing and magnetizing direction is contrary for described first permanent magnet 2 and the second permanent magnet 7, and such as first
Permanent magnet 2 outer toroid is S pole, and interior annular is then N pole, then the second permanent magnet 7 outer toroid is N pole, and interior annular is S pole；Described
One permanent magnet 2 is identical with the second permanent magnet 7 dimensional parameters, manufacture craft；Described first permanent magnet 2 and the second permanent magnet 7 outer
Inner circle equal diameters of circular diameter and magnetic guiding loop 3 and coordinating for gap.
Axle sleeve 11, magnetic guiding loop 3 select the good material of magnetic conductivity, such as electrical pure iron；
Permanent magnet selects neodymium iron boron；
Select non-magnetic material such as copper every magnetic orientation ring 5；
The species of magnetic liquid 10 is according to the magnetic liquid of use environment base load liquid different with the different choice of sealing medium.
Claims (4)
1. a kind of magnetic fluid seal device of no pole shoe it is characterised in that：This device includes：Shell (1), the first permanent magnet
(2), magnetic guiding loop (3), magnetic guiding loop first sealing ring (4), every magnetic orientation ring (5), magnetic guiding loop second sealing ring (6), the second permanent magnetism
Body (7), magnetic guiding loop the 3rd sealing ring (8), right end cap (9), magnetic liquid (10), axle sleeve (11), sleeve sealing circle (12), revolution
Axle (13)；
Constitute the connection between each several part of this device：Described sleeve sealing circle (12) is arranged on the groove of axle sleeve (11) inner circle
Interior, constitute the axle sleeve with sealing ring；Described magnetic guiding loop first sealing ring (4), magnetic guiding loop the 3rd sealing ring (8) are arranged on magnetic guiding loop
(3) in the groove of inner circle, described magnetic guiding loop second sealing ring (6) is arranged in the cylindrical groove of magnetic guiding loop (3), constitutes band sealing
The magnetic guiding loop of circle；
The described axle sleeve with sealing ring is enclosed within gyroaxis (13), completes the positioning of the axle sleeve with sealing ring using trip bolt；
Described shell (1) is enclosed within gyroaxis (13), the described magnetic guiding loop with sealing ring, the first permanent magnet (2), every magnetic orientation ring (5),
Second permanent magnet (7) is sequentially placed into shell (1), and injection magnetic liquid (10), covers right end cap (9) thereto, using screw thread even
Connect and complete axially position；Using the threaded positioning completing shell (1) of the ring flange of shell (1)；
This device does not contain pole shoe, does not form magnetic loop by pole shoe.
2. according to claim 1 a kind of magnetic fluid seal device of no pole shoe it is characterised in that：
Using radial magnetizing and magnetizing direction is contrary for first permanent magnet (2) and the second permanent magnet (7).
3. according to claim 1 a kind of magnetic fluid seal device of no pole shoe it is characterised in that：
First permanent magnet (2) is identical with the second permanent magnet (7) dimensional parameters.
4. according to claim 1 a kind of magnetic fluid seal device of no pole shoe it is characterised in that：
Inner circle equal diameters of the outside diameter of the first permanent magnet (2) and the second permanent magnet (7) and magnetic guiding loop (3) and joining for gap
Close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610921970.4A CN106402398A (en) | 2016-10-21 | 2016-10-21 | Magnetic liquid sealing device without pole shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610921970.4A CN106402398A (en) | 2016-10-21 | 2016-10-21 | Magnetic liquid sealing device without pole shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106402398A true CN106402398A (en) | 2017-02-15 |
Family
ID=58013353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610921970.4A Pending CN106402398A (en) | 2016-10-21 | 2016-10-21 | Magnetic liquid sealing device without pole shoe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106402398A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906207A (en) * | 2017-12-13 | 2018-04-13 | 广西科技大学 | A kind of series parallel type device for sealing magnetic fluid |
| CN108825790A (en) * | 2018-08-13 | 2018-11-16 | 广西科技大学 | A kind of magnetic source increment type magnetic fluid sealing structure |
| CN109185464A (en) * | 2018-10-24 | 2019-01-11 | 广西科技大学 | A kind of magnetic conductive cylinder staged device for sealing magnetic fluid |
| CN109854752A (en) * | 2019-01-29 | 2019-06-07 | 清华大学 | Magnetic liquid rotating sealing device suitable for high speed conditions |
| CN112642377A (en) * | 2020-12-28 | 2021-04-13 | 牡丹江师范学院 | Dynamic sealing device for chemical reaction kettle |
| CN112728111A (en) * | 2021-01-18 | 2021-04-30 | 清华大学 | Magnetic liquid sealing device |
| CN113464657A (en) * | 2021-07-15 | 2021-10-01 | 北京交通大学 | Magnetic fluid seal using radially magnetized permanent magnet ring |
| CN113757386A (en) * | 2021-09-07 | 2021-12-07 | 北京交通大学 | Magnetic fluid sealing device using cylindrical magnets arranged in radial and circumferential direction as magnetic source |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59231271A (en) * | 1983-06-11 | 1984-12-25 | Tohoku Metal Ind Ltd | Magnetic fluid sealing device |
| US4527805A (en) * | 1984-05-03 | 1985-07-09 | Ferrofluidics Corporation | High-pressure ferrofluid seal apparatus |
| CN1473251A (en) * | 2000-10-12 | 2004-02-04 | Nok��ʽ���� | Magnetic fluid seal device |
| CN101776149A (en) * | 2010-03-01 | 2010-07-14 | 北京交通大学 | Low-temperature and small-diameter magnetic fluid seal device |
| WO2012027525A2 (en) * | 2010-08-26 | 2012-03-01 | Ferrotec (Usa) Corporation | Failure indicator seal for rotary feedthrough |
| CN102518811A (en) * | 2011-12-15 | 2012-06-27 | 北京交通大学 | Magnetic fluid sealing structure |
| PL214309B1 (en) * | 2007-10-10 | 2013-07-31 | Akad Gorniczo Hutnicza | Vacuum pass with multi-stage sealing with magnetic liquid |
| CN104006162A (en) * | 2014-06-03 | 2014-08-27 | 徐州牛头山铸业有限公司 | Sealing system for reciprocating moving rod piece |
| CN203868346U (en) * | 2014-06-03 | 2014-10-08 | 徐州牛头山铸业有限公司 | Sealing system for reciprocating motion rod piece |
| CN104455461A (en) * | 2013-09-15 | 2015-03-25 | 南京大五教育科技有限公司 | Longitudinal magnetofluid sealing device |
-
2016
- 2016-10-21 CN CN201610921970.4A patent/CN106402398A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59231271A (en) * | 1983-06-11 | 1984-12-25 | Tohoku Metal Ind Ltd | Magnetic fluid sealing device |
| US4527805A (en) * | 1984-05-03 | 1985-07-09 | Ferrofluidics Corporation | High-pressure ferrofluid seal apparatus |
| CN1473251A (en) * | 2000-10-12 | 2004-02-04 | Nok��ʽ���� | Magnetic fluid seal device |
| PL214309B1 (en) * | 2007-10-10 | 2013-07-31 | Akad Gorniczo Hutnicza | Vacuum pass with multi-stage sealing with magnetic liquid |
| CN101776149A (en) * | 2010-03-01 | 2010-07-14 | 北京交通大学 | Low-temperature and small-diameter magnetic fluid seal device |
| WO2012027525A2 (en) * | 2010-08-26 | 2012-03-01 | Ferrotec (Usa) Corporation | Failure indicator seal for rotary feedthrough |
| CN102518811A (en) * | 2011-12-15 | 2012-06-27 | 北京交通大学 | Magnetic fluid sealing structure |
| CN104455461A (en) * | 2013-09-15 | 2015-03-25 | 南京大五教育科技有限公司 | Longitudinal magnetofluid sealing device |
| CN104006162A (en) * | 2014-06-03 | 2014-08-27 | 徐州牛头山铸业有限公司 | Sealing system for reciprocating moving rod piece |
| CN203868346U (en) * | 2014-06-03 | 2014-10-08 | 徐州牛头山铸业有限公司 | Sealing system for reciprocating motion rod piece |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906207A (en) * | 2017-12-13 | 2018-04-13 | 广西科技大学 | A kind of series parallel type device for sealing magnetic fluid |
| CN107906207B (en) * | 2017-12-13 | 2023-05-02 | 广西科技大学 | Series-parallel magnetic fluid sealing device |
| CN108825790A (en) * | 2018-08-13 | 2018-11-16 | 广西科技大学 | A kind of magnetic source increment type magnetic fluid sealing structure |
| CN109185464A (en) * | 2018-10-24 | 2019-01-11 | 广西科技大学 | A kind of magnetic conductive cylinder staged device for sealing magnetic fluid |
| CN109185464B (en) * | 2018-10-24 | 2020-07-17 | 广西科技大学 | Magnetic conduction cylinder stepped magnetic fluid sealing device |
| CN109854752A (en) * | 2019-01-29 | 2019-06-07 | 清华大学 | Magnetic liquid rotating sealing device suitable for high speed conditions |
| CN109854752B (en) * | 2019-01-29 | 2024-02-09 | 清华大学 | Magnetic liquid rotary sealing device suitable for high-rotation-speed working condition |
| CN112642377A (en) * | 2020-12-28 | 2021-04-13 | 牡丹江师范学院 | Dynamic sealing device for chemical reaction kettle |
| CN112642377B (en) * | 2020-12-28 | 2022-09-30 | 牡丹江师范学院 | Dynamic sealing device for chemical reaction kettle |
| CN112728111A (en) * | 2021-01-18 | 2021-04-30 | 清华大学 | Magnetic liquid sealing device |
| CN113464657A (en) * | 2021-07-15 | 2021-10-01 | 北京交通大学 | Magnetic fluid seal using radially magnetized permanent magnet ring |
| CN113757386A (en) * | 2021-09-07 | 2021-12-07 | 北京交通大学 | Magnetic fluid sealing device using cylindrical magnets arranged in radial and circumferential direction as magnetic source |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170215 |