CN202091519U - Magnetic liquid rotating sealing device - Google Patents
Magnetic liquid rotating sealing device Download PDFInfo
- Publication number
- CN202091519U CN202091519U CN2011201623001U CN201120162300U CN202091519U CN 202091519 U CN202091519 U CN 202091519U CN 2011201623001 U CN2011201623001 U CN 2011201623001U CN 201120162300 U CN201120162300 U CN 201120162300U CN 202091519 U CN202091519 U CN 202091519U
- Authority
- CN
- China
- Prior art keywords
- pole shoe
- axle sleeve
- end cap
- endoporus
- permanent magnet
- 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.)
- Expired - Fee Related
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- Rolling Contact Bearings (AREA)
- Sealing Of Bearings (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
A magnetic liquid rotating sealing device belongs to the field of mechanical engineering sealing, which resolves the problems that under atmospheric environment, rainwater and dust can enter a right rolling bearing of an existing sealing device, accordingly sealing pieces of the existing sealing device are rusted, and sealing performance is affected. In order to resolve the problems, a third magnetic isolation ring (12), a third pole piece, a second permanent magnet (15), a forth pole piece (17) and a fourth magnetic isolation ring (18) are tightly attached to the right lateral side of an inner hole boss of an end cover (11) in sequence, the end cover is in concave-convex match with a small end cover (20), and the small end cover and the end cover are fixed through screws. The length between a right end face of the small end cover and a right end face of a shaft sleeve is 5-8mm. A distance 1 between each sealing tooth arranged on the left portion of an inner hole of the fourth pole piece and the shaft sleeve (26) is 0.05-0.15mm. The right portion of an inner hole of the forth pole piece is a spiral concave type groove, and a distance 2 between the right portion of the inner hole of the forth pole piece and the shaft sleeve is 0.2-0.5mm. Magnetic liquid is filled on the periphery of an inner hole of the second permanent magnet (15). The magnetic liquid rotating sealing device is easy to assemble, dust-proof, water-proof and long in service life.
Description
Technical field
The utility model belongs to sealing field of mechanical engineering.
Background technique
The magnetic fluid sealing technology is because it has zero leakage, does not have wearing and tearing, and the life-span is long, keeps in repair easy, advantages of simple structure and simple and used by increasing industry gradually.Connection between the magnetic liquid rotating sealing device each several part that is used for the rotary joint sealing that Beijing Jiaotong University produces is as follows: first rubber seal is embedded Baltimore groove on the left pole shoe excircle, second rubber ring is embedded in the Baltimore groove on the right pole shoe excircle.To roll left successively dynamic bearing, first magnetism resistent ring, left pole shoe, permanent magnet, right pole shoe, second magnetism resistent ring, right rolling bearing abuts against on the right flank of shell endoporus boss, by being threaded on screw and the shell, end cap is fixed on the shell.Magnetic liquid is infused on the endoporus circumference of permanent magnet.Be installed on the left surface of axle sleeve boss regulating pad, in the endoporus that the described right rolling bearing of packing into from right to left together, first magnetism resistent ring, permanent magnet, left pole shoe, the dynamic bearing that rolls left assembling back form.Back-up ring is close to the left side of axle sleeve, with screw back-up ring and axle sleeve is linked together, and makes the axle sleeve axial restraint.When above-mentioned device uses, under the situation that level is installed, have rainwater under atmosphere environment, dust enters this device, makes the decline in working life of right bearing, influences sealability.
The model utility content
The utility model technical issues that need to address are, when existing magnetic liquid rotating sealing device uses, under the situation that level is installed, have rainwater under atmosphere environment, dust enters this device, and right bearing is descended working life, influences sealability.
The technological scheme that its technical problem that solves the utility model adopts is:
A kind of magnetic liquid rotating sealing device constitutes the connection between the each several part of this device:
In the Baltimore groove on first rubber seal embedding pole shoe, one excircle, in the Baltimore groove on second rubber seal embedding pole shoe, two excircles.
To roll left successively dynamic bearing, first magnetism resistent ring, described pole shoe one, first permanent magnet, described pole shoe two, second magnetism resistent ring, right rolling bearing abuts against on the right flank of endoporus boss, shell cooperates with end cap is concavo-convex, by being threaded on screw and the shell, end cap is fixed on the shell.
Magnetic liquid is infused on the circumference of the first permanent magnet endoporus.
Regulate pad and be installed on the left surface of axle sleeve boss, described axle sleeve is packed in the endoporus that the described dynamic bearing that rolls left, first magnetism resistent ring, pole shoe one, first permanent magnet, pole shoe two, second magnetism resistent ring, right rolling bearing assembling back form from right to left.
Left side back-up ring is close to the left side of axle sleeve, with screw left back-up ring and axle sleeve is linked together, and makes the axle sleeve axial restraint.
The 3rd rubber seal is embedded in the Baltimore groove on pole shoe three excircles, the 4th rubber seal is embedded pole shoe all round in the Baltimore groove on the circumference.
Successively the 3rd magnetism resistent ring, described pole shoe three, second permanent magnet, described pole shoe the four, the 4th magnetism resistent ring are abutted against the right flank of end cap endoporus boss, end cap cooperates with little end cap is concavo-convex, by screw little end cap and end cap is fixed.
Magnetic liquid is infused on the circumference of the second permanent magnet endoporus.
The right side of described little end cap is apart from the distance L=5～8mm of the right side of described axle sleeve.
The sealing tooth and the pole shoe three of the left-hand component of described pole shoe four endoporus are identical, and the gap between the axle sleeve is d1=0.05～0.15mm, and the right-hand component of pole shoe four endoporus is the spiral concave groove, and the gap between the axle sleeve is d2=0.2～0.5mm.
The utility model is compared the beneficial effect that is had with prior art:
Liquid such as the anti-effectively sealing of the structure of end cap or dust enter seal arrangement, influence sealability, have improved the working life of Sealing.
Description of drawings
A kind of magnetic liquid rotating sealing device of Fig. 1 structural drawing.
The partial enlarged drawing at the I place of Fig. 2 Fig. 1.
Among the figure: left back-up ring 1, tapped hole 2, shell 3, dynamic bearing 4 rolls left, first magnetism resistent ring 5, first rubber seal 6, first permanent magnet 7, second rubber seal 8, second magnetism resistent ring 9, right rolling bearing 10, end cap 11, the 3rd magnetism resistent ring 12, pole shoe 3 13, the 3rd rubber seal 14, second permanent magnet 15, the 4th rubber seal 16, pole shoe 4 17, the 4th magnetism resistent ring 18, seal groove 19, small end lid 20, regulate pad 21, screw 22, pole shoe 2 23, pole shoe 1, sealing tooth 25, axle sleeve 26, seal ring 27, screw 28.
Embodiment
With the accompanying drawing is that the utility model is described in further detail for embodiment:
A kind of magnetic liquid rotating sealing device as Fig. 1,2, constitutes the connection between the each several part of this device:
In the Baltimore groove on first rubber seal, 6 embedding pole shoes, one 24 excircles, in the Baltimore groove on second rubber seal, 8 embedding pole shoes, 2 23 excircles.
To roll left successively dynamic bearing 4, first magnetism resistent ring 5, described pole shoe 1, first permanent magnet 7, described pole shoe 2 23, second magnetism resistent ring 9, right rolling bearing 10 abuts against on the right flank of endoporus boss, shell 3 and 11 concavo-convex cooperations of end cap, by being threaded on screw 22 and the shell 3, end cap 11 is fixed on the shell 3.
Magnetic liquid is infused on the circumference of first permanent magnet, 7 endoporus, under the effect of magnetic force, magnetic liquid is attracted in the gap of sealing tooth 25 and pole shoe 1 and pole shoe 2 23, forms reliable sealing.
Regulate pad 21 and be installed on the left surface of axle sleeve 26 boss, described axle sleeve 26 is packed in the endoporus that the described dynamic bearing 4 that rolls left, first magnetism resistent ring 5, pole shoe 1, first permanent magnet 7, pole shoe 2 23, second magnetism resistent ring 9, right rolling bearing 10 assembling backs form from right to left.
Left side back-up ring 1 is close to the left side of axle sleeve 26, with screw 28 left back-up ring 1 is linked together with axle sleeve 26, makes axle sleeve 26 axial restraints.
In the Baltimore groove on the 3rd rubber seal 14 embedding pole shoes 3 13 excircles, in the Baltimore groove on the 4th rubber seal 16 embedding pole shoes 4 17 excircles.
Successively the 3rd magnetism resistent ring 12, described pole shoe 3 13, second permanent magnet 15, described pole shoe 4 17, the 4th magnetism resistent ring 18 are abutted against the right flank of end cap 11 endoporus boss, end cap 11 covered for 20 concavo-convex cooperations with small end, and is by screw that small end lid 20 is fixing with end cap 11.
Magnetic liquid is infused on the circumference of second permanent magnet, 15 endoporus.
The right side of described small end lid 20 has prevented effectively that apart from the distance L=5～8mm of the right side of described axle sleeve 26 end face of liquid runs down end caps such as water from entering, and the corrosion bearing influences sealability.
The sealing tooth and the pole shoe 3 13 of the left-hand component of described pole shoe 4 17 endoporus are identical, and the gap between the axle sleeve is d1=0.05～0.15mm, form magnetic fluid sealing with the magnetic liquid among its gap, the numerical value of d1 selects its end value or the arbitrary value between it all can.Described pole shoe 4 17 endoporus circumference right part be the spiral concave groove, and the gap between the axle sleeve 26 is d2=0.2～0.5mm, spiral concave groove and shaft room form spiral labyrinch seal, the numerical value of d1 selects its end value or the arbitrary value between it all can.Magnetic fluid sealing and spiral labyrinch seal on described end cap 11 inner circumferences, impurity enters seal arrangement to its sealability influence when having avoided the axle sleeve rotation.
The material selection electrical pure iron of pole shoe 1, pole shoe 2 23, pole shoe 3 13 and pole shoe 4 17.
Tapped hole 2 and rubber seal 27 are to be used for connecting and sealing with other devices.
Seal ring when being used for other device connections, is installed seal groove 19.
First permanent magnet 7 and second permanent magnet 15 are selected Rb-Fe-B material for use.
Roll left dynamic bearing 4 and right rolling bearing 10 all adopts deep groove ball bearing.
The kind of magnetic liquid is according to the magnetic liquid of the different base fluids of different choice of sealing gas and ambient temperature.Generally when vacuum seal, select kerosene or hydrocarbon or two lipid base load liquid for use, select high-quality burning oil or silicate lipid or two lipid base load liquid under the low temperature for use.
Claims (1)
1. magnetic liquid rotating sealing device constitutes the connection between the each several part of this device:
In the Baltimore groove on first rubber seal (6) embedding pole shoe, one (24) excircle, in the Baltimore groove on second rubber seal (8) embedding pole shoe, two (23) excircles;
To roll left successively dynamic bearing (4), first magnetism resistent ring (5), described pole shoe one (24), first permanent magnet (7), described pole shoe two (23), second magnetism resistent ring (9), right rolling bearing (10) abuts against on the right flank of endoporus boss, shell (3) and concavo-convex cooperation of end cap (11), by being threaded on screw (22) and the shell (3), end cap (11) is fixed on the shell (3);
Magnetic liquid is infused on the circumference of first permanent magnet (7) endoporus;
Regulate pad (21) and be installed on the left surface of axle sleeve (26) boss, described axle sleeve (26) is packed in the endoporus that the described dynamic bearing that rolls left (4), first magnetism resistent ring (5), pole shoe one (24), first permanent magnet (7), pole shoe two (23), second magnetism resistent ring (9), right rolling bearing (10) assembling back form from right to left;
Left side back-up ring (1) is close to the left side of axle sleeve (26), with screw (28) left back-up ring (1) and axle sleeve (26) is linked together, and makes axle sleeve (26) axial restraint;
It is characterized in that:
In the Baltimore groove on the 3rd rubber seal (14) embedding pole shoe three (13) excircles, in the Baltimore groove on the 4th rubber seal (16) embedding pole shoe four (17) excircles;
Successively the 3rd magnetism resistent ring (12), described pole shoe three (13), second permanent magnet (15), described pole shoe the four (17), the 4th magnetism resistent ring (18) are abutted against the right flank of end cap (11) endoporus boss, end cap (11) and concavo-convex cooperation of little end cap (20), by screw that little end cap (20) and end cap (11) is fixing;
Magnetic liquid is infused on the circumference of second permanent magnet (15) endoporus;
The right side of described little end cap (20) is apart from the distance L=5～8mm of the right side of described axle sleeve (26);
The sealing tooth and the pole shoe three (13) of described pole shoe four (17) endoporus left-hand components are identical, and the gap between the axle sleeve is d1=0.05～0.15mm, pole shoe four (17) endoporus right-hand components are the spiral concave groove, and the gap between the axle sleeve (26) is d2=0.2～0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201623001U CN202091519U (en) | 2011-05-20 | 2011-05-20 | Magnetic liquid rotating sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201623001U CN202091519U (en) | 2011-05-20 | 2011-05-20 | Magnetic liquid rotating sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202091519U true CN202091519U (en) | 2011-12-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201623001U Expired - Fee Related CN202091519U (en) | 2011-05-20 | 2011-05-20 | Magnetic liquid rotating sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202091519U (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615002A (en) * | 2012-03-15 | 2012-08-01 | 张家港市腾龙机械制造有限公司 | Spindle structure for pen-making centrifugal machine |
| CN103133700A (en) * | 2013-03-21 | 2013-06-05 | 北京交通大学 | Magnetic liquid rotating and sealing device |
| CN103148220A (en) * | 2013-03-27 | 2013-06-12 | 北京交通大学 | Magnetic liquid rotary sealing device |
| CN103438222A (en) * | 2013-09-25 | 2013-12-11 | 北京交通大学 | Method for improving seal pressure endurance capability of magnetic liquid by adding micron non-magnetic solid particles |
| CN103557335A (en) * | 2013-11-11 | 2014-02-05 | 北京交通大学 | Inflatable magnetic liquid rotating seal device |
| CN104482213A (en) * | 2014-12-15 | 2015-04-01 | 青岛科技大学 | Internal mixer rotor sealing device |
| CN104633128A (en) * | 2015-01-29 | 2015-05-20 | 北京交通大学 | Device for improving magnetic liquid sealing pressure endurance capacity |
| CN105221753A (en) * | 2015-09-09 | 2016-01-06 | 北京交通大学 | Radial magnetic liquid rotating sealing device |
| CN105386975A (en) * | 2015-12-03 | 2016-03-09 | 倪前悦 | Sealing device of electromagnetic reinforcement steam compressor |
| CN107246477A (en) * | 2017-05-15 | 2017-10-13 | 杭州慧翔电液技术开发有限公司 | A kind of installation method of magnetic fluid rotary sealing appts |
| CN107740865A (en) * | 2017-11-03 | 2018-02-27 | 广西科技大学 | A kind of cross staged device for sealing magnetic fluid |
| CN107906204A (en) * | 2017-12-13 | 2018-04-13 | 广西科技大学 | Staged pole shoe replaces the reciprocating sealing device of mixing with lip-type packing |
| CN109764137A (en) * | 2019-01-31 | 2019-05-17 | 广西科技大学 | A kind of double ladder device for sealing magnetic fluid of symmetric form |
| WO2020150967A1 (en) * | 2019-01-24 | 2020-07-30 | 清华大学 | Magnetic liquid sealing device having function of preventing non-magnetic substance pollution |
| CN112112972A (en) * | 2020-10-30 | 2020-12-22 | 清华大学 | Magnetic liquid reciprocating sealing device |
| CN113294525A (en) * | 2021-05-26 | 2021-08-24 | 安徽普氏生态环境工程有限公司 | Composite sealing mechanism for magnetic liquid |
-
2011
- 2011-05-20 CN CN2011201623001U patent/CN202091519U/en not_active Expired - Fee Related
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615002A (en) * | 2012-03-15 | 2012-08-01 | 张家港市腾龙机械制造有限公司 | Spindle structure for pen-making centrifugal machine |
| CN103133700A (en) * | 2013-03-21 | 2013-06-05 | 北京交通大学 | Magnetic liquid rotating and sealing device |
| CN103133700B (en) * | 2013-03-21 | 2015-09-30 | 北京交通大学 | A kind of magnetic liquid rotating sealing device |
| CN103148220B (en) * | 2013-03-27 | 2016-08-24 | 北京交通大学 | A kind of magnetic liquid rotating sealing device |
| CN103148220A (en) * | 2013-03-27 | 2013-06-12 | 北京交通大学 | Magnetic liquid rotary sealing device |
| CN103438222A (en) * | 2013-09-25 | 2013-12-11 | 北京交通大学 | Method for improving seal pressure endurance capability of magnetic liquid by adding micron non-magnetic solid particles |
| CN103557335A (en) * | 2013-11-11 | 2014-02-05 | 北京交通大学 | Inflatable magnetic liquid rotating seal device |
| CN103557335B (en) * | 2013-11-11 | 2015-12-02 | 北京交通大学 | Gas-filled type magnetic liquid rotating sealing device |
| CN104482213A (en) * | 2014-12-15 | 2015-04-01 | 青岛科技大学 | Internal mixer rotor sealing device |
| CN104633128B (en) * | 2015-01-29 | 2016-12-07 | 北京交通大学 | A kind of device improving magnetic fluid sealing voltage endurance capability |
| CN104633128A (en) * | 2015-01-29 | 2015-05-20 | 北京交通大学 | Device for improving magnetic liquid sealing pressure endurance capacity |
| CN105221753A (en) * | 2015-09-09 | 2016-01-06 | 北京交通大学 | Radial magnetic liquid rotating sealing device |
| CN105221753B (en) * | 2015-09-09 | 2017-04-05 | 北京交通大学 | Radial direction magnetic liquid rotating sealing device |
| CN105386975A (en) * | 2015-12-03 | 2016-03-09 | 倪前悦 | Sealing device of electromagnetic reinforcement steam compressor |
| CN107246477A (en) * | 2017-05-15 | 2017-10-13 | 杭州慧翔电液技术开发有限公司 | A kind of installation method of magnetic fluid rotary sealing appts |
| CN107740865B (en) * | 2017-11-03 | 2023-05-05 | 广西科技大学 | Cross-shaped stepped magnetic fluid sealing device |
| CN107740865A (en) * | 2017-11-03 | 2018-02-27 | 广西科技大学 | A kind of cross staged device for sealing magnetic fluid |
| CN107906204A (en) * | 2017-12-13 | 2018-04-13 | 广西科技大学 | Staged pole shoe replaces the reciprocating sealing device of mixing with lip-type packing |
| WO2020150967A1 (en) * | 2019-01-24 | 2020-07-30 | 清华大学 | Magnetic liquid sealing device having function of preventing non-magnetic substance pollution |
| CN109764137A (en) * | 2019-01-31 | 2019-05-17 | 广西科技大学 | A kind of double ladder device for sealing magnetic fluid of symmetric form |
| CN109764137B (en) * | 2019-01-31 | 2023-10-20 | 广西科技大学 | Symmetrical double-step magnetic fluid sealing device |
| CN112112972A (en) * | 2020-10-30 | 2020-12-22 | 清华大学 | Magnetic liquid reciprocating sealing device |
| CN112112972B (en) * | 2020-10-30 | 2021-10-08 | 清华大学 | Magnetic liquid reciprocating sealing device |
| CN113294525A (en) * | 2021-05-26 | 2021-08-24 | 安徽普氏生态环境工程有限公司 | Composite sealing mechanism for magnetic liquid |
| CN113294525B (en) * | 2021-05-26 | 2023-12-08 | 安徽普氏生态环境有限公司 | Composite sealing mechanism for magnetic liquid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20120520 |