CN207740466U - A kind of multistage disk device for sealing magnetic fluid - Google Patents
A kind of multistage disk device for sealing magnetic fluid Download PDFInfo
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- CN207740466U CN207740466U CN201721732169.1U CN201721732169U CN207740466U CN 207740466 U CN207740466 U CN 207740466U CN 201721732169 U CN201721732169 U CN 201721732169U CN 207740466 U CN207740466 U CN 207740466U
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- ring
- pole shoe
- magnet ring
- axial
- radial
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model is related to a kind of multistage disk device for sealing magnetic fluid, including the multistage disk device for sealing magnetic fluid, including axis, shell, left pole shoe ring, intermediate pole shoe ring, right pole shoe ring, interior magnet ring, outer magnet ring；The left pole shoe ring and right pole shoe ring are set between shell and axis；The axially spaced more than two magnet ring groups of setting between the left pole shoe ring and right pole shoe ring；It is separated by intermediate pole shoe ring between each magnet ring group, the intermediate pole shoe ring set is loaded between shell and axis.The utility model can solve the problems, such as that pressure-resistant performance existing for existing single-stage disk device for sealing magnetic fluid and more magnetic source device for sealing magnetic fluid is low so that the sealing technique is successfully applied in the fields such as high-speed overload.
Description
Technical field
The utility model belongs to sealing field of mechanical engineering, and in particular to a kind of multistage disk device for sealing magnetic fluid.
Background technology
Industrial many occasions are very stringent to seal request, especially requirement sealing No leakage, and general traditional machinery
Sealing element can not accomplish this point.Magnet fluid sealing can be well solved the above problem, and Magneticfluid Seal Technique is compared to tradition
Sealing technique has many advantages, such as zero leakage rate, without solid friction, long lifespan, high reliability, has been widely used in each row
In each industry.This is of great significance to engineering sealing.When magnetic fluid seal technology is applied in major diameter, high speed and heavy duty sealing
In environment, the magnetic fluid in seal clearance often fails because seal clearance is excessive, therefore improves magnetic under the conditions of wide arc gap
The pressure-resistant performance of property Fluid Sealing is one of hot issue of current research.
One of the method for improving wide arc gap magnetic Fluid Sealing pressure resistance performance is by increasing in magnet fluid sealing magnetic circuit
The quantity of magnetic source and the shape for improving pole shoe, the sealing as described in documents 1 (patent of Publication No. CN202332310U)
Sealing device described in device and documents 2 (patent of Publication No. CN205877200U).Although described in document above
The relatively common magnetic fluid seal performance of two kinds of sealing devices is greatly improved, but still can not meet high-speed overload occasion
Compared with the requirement of high sealing performance, still there is the space further increased.
Utility model content
The purpose of this utility model is to provide multistage disk device for sealing magnetic fluid, to solve existing single-stage disk magnetic current
The low problem of pressure-resistant performance existing for body sealing device and more magnetic source device for sealing magnetic fluid so that the sealing technique is applied successfully
In the fields such as high-speed overload.
The technical solution of the utility model is as follows：
The multistage disk device for sealing magnetic fluid, including axis, shell, left pole shoe ring, intermediate pole shoe ring, right pole shoe
Ring, interior magnet ring, outer magnet ring；
The left pole shoe ring and right pole shoe ring are set between shell and axis；The left pole shoe ring and right pole shoe ring it
Between the more than two magnet ring groups of axially spaced setting；Between each magnet ring group by intermediate pole shoe ring every
It opens, the intermediate pole shoe ring set is loaded between shell and axis；
Each magnet ring group includes mutual corresponding interior magnet ring and outer magnet ring；The interior permanent magnetism
Body ring is set on the periphery of axis, and the outer magnet ring is arranged on the inner wall of shell；The interior magnet ring and
Outer magnet ring it is axially coincident, the axial width of interior magnet ring is less than the axial width of outer magnet ring, and interior permanent magnetism
There are gaps between the periphery of body ring and the inner headed face of outer magnet ring；The orthographic projection of the interior magnet ring radial direction is located at
The centre in the inner headed face region of outer magnet ring；
The inner headed face of the left pole shoe ring, right pole shoe ring is equipped with axial poles tooth I, and the axial poles tooth I is radially
Extend to the periphery of axis, there are gaps, magnetic fluid to be set in the gap between the periphery of axis；The intermediate pole shoe ring
Outer end face be equipped with radial direction pole tooth I, the radial pole tooth I axially inward magnet ring end face extension, with interior permanent magnetism
There are gaps, magnetic fluid to be set in the gap between the end face of body ring；
The inner headed face of the intermediate pole shoe ring is equipped with axial poles tooth II, and the axial poles tooth II is radially to axis
Periphery extends, and there are gaps, magnetic fluid to be set in the gap between the periphery of axis；The both ends of the intermediate pole shoe ring
Outer end face on be respectively equipped with radial pole tooth II, the radial pole tooth II is respectively in axial direction to the interior magnet ring of its both sides
End face extends, and there are gaps, magnetic fluid to be set in the gap between the end face of interior magnet ring.
The left pole shoe ring, right pole shoe ring respectively include axial rings I and radial ring I, the inner headed face of the axial rings I
Axially extend, is connect with one end of the periphery of radial ring I, the periphery of axial rings I is contacted with the inner headed face of shell, axis
It is contacted to the end face of ring I with outer magnet ring；The other end of the radial ring I in an axial direction in magnet ring end face extend；
The axial poles tooth I is set on the inner headed face of radial ring I, and the radial pole tooth I is set to radial direction ring I close to interior magnet ring
End face on.
The periphery of the axial rings I, which is equipped in annular groove I, the annular groove I, is equipped with sealing ring I.
The intermediate pole shoe ring includes axial rings II and radial ring II, and the inner headed face of the axial rings II is axially
Extend, intermediate with the periphery of radial ring II is connect, and the periphery of axial rings II is contacted with the inner headed face of shell, axial rings II
End face contacted with outer magnet ring；Prolong the end face of the both ends of the radial ring II interior magnet ring on both sides respectively in axial direction
It stretches；The axial poles tooth II is set on the inner headed face of radial ring II, and the radial pole tooth II is respectively arranged on radial ring II's
On two end faces.
The periphery of the axial rings II, which is equipped in annular groove II, the annular groove II, is equipped with sealing ring
II。
The multistage disk device for sealing magnetic fluid, further includes left magnetism-isolating loop and right magnetism-isolating loop；The left magnetism-isolating loop
Set on the left side of left pole shoe ring, it is close to the inner wall setting of shell；The right magnetism-isolating loop is set to the right side of right pole shoe ring, is close to outer
The inner wall of shell is arranged.
The multistage disk device for sealing magnetic fluid, further includes left bearing and right bearing, the left bearing and right axle
It holds and is set on axis, the left bearing is set to the left side of left magnetism-isolating loop, and the right bearing is set to the right side of right magnetism-isolating loop
Side.
2-10 groups are arranged in the magnet ring group interval.
The axial poles tooth I, radial direction pole tooth I, axial poles tooth II, radial direction pole tooth II are respectively 2~10 to be intervally arranged
A ring pole tooth composition.
The interior magnet ring, outer magnet ring are axial charging type permanent magnet, interior magnet ring, outer magnet ring
Magnetic line of force direction it is opposite.
The right side of the right bearing is equipped with end cap, and the end cap is sleeved on axis, shell right end is encapsulated, institute
Sealing medium is filled between the right bearing and end cap stated.
The device for sealing magnetic fluid that the utility model is composed by magnet ring inside and outside multistage, the circle of the sealing device
Disc type shaft and more magnet structures, pole shoe axially and radially uniformly open up ring pole tooth, by permanent magnet be embedded in pole shoe it
Between, magnetic fluid is injected in the radial and axial seal clearance that pole shoe and multi-diameter shaft are formed, to realize multistage disk magnetic fluid
Sealing, can solve the insufficient problem of wide arc gap condition lower sealing device voltage endurance capability.
The utility model is on the basis of common magnet fluid sealing, by the way that multistage magnetic source is arranged and improves point of pole tooth on pole shoe
Cloth form so that magnetic field intensity greatly improves, so that magnet fluid sealing voltage endurance capability greatly enhances；The sealing knot of disc type
The loss of magnetic fluid when structure can reduce seal failure increases the secondary bearing capacity and self-reparing capability of sealing device.Into one
Step improves the voltage endurance capability and sealing reliability of magnetic fluid seal under the conditions of wide arc gap, expands its range of safety operation.
Description of the drawings
Fig. 1 is the structural schematic diagram of sealing device described in the utility model；
Each serial number mark and corresponding title are as follows in figure：
1- axis, 2- shells, the left pole shoe rings of 3-, pole shoe ring among 4-, the right pole shoe rings of 5-, magnet ring in 6-, the outer permanent magnetism of 7-
Body ring, 8- axial poles tooth I, 9- radial directions pole tooth I, 10- axial poles tooth II, 11- radial direction pole tooth II, 12- axial rings I, 13- are radial
The left magnetism-isolating loop of ring I, 14- sealing ring I, 15- axial rings II, 16- radial direction ring II, 17- sealing ring II, 18-, the right magnetism-isolating loops of 19-,
20- left bearings, 21- right bearings, 22- end caps, 23- sealing mediums.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, the multistage disk device for sealing magnetic fluid, including axis 1, shell 2, left pole shoe ring 3, dynode
Boots ring 4, right pole shoe ring 5, interior magnet ring 6, outer magnet ring 7；
The left pole shoe ring 3 and right pole shoe ring 5 is set between shell 2 and axis 1；The left pole shoe ring 3 and right pole
The axially spaced more than two magnet ring groups of setting between boots ring 5；Pass through centre between each magnet ring group
Pole shoe ring 4 separates, and the intermediate pole shoe ring 4 is set between shell 2 and axis 1；
Each magnet ring group includes mutual corresponding interior magnet ring 6 and outer magnet ring 7；It is described it is interior forever
Magnet ring 6 is set on the periphery of axis 1, and the outer magnet ring 7 is arranged on the inner wall of shell 2；The interior permanent magnetism
Body ring 6 and outer magnet ring 7 it is axially coincident, the axial width of interior magnet ring 6 is less than the axial width of outer magnet ring 7,
And there are gaps between the periphery of interior magnet ring 6 and the inner headed face of outer magnet ring 7；6 diameter of interior magnet ring
To orthographic projection be located at outer magnet ring 7 inner headed face region centre；
The inner headed face of the left pole shoe ring 3, right pole shoe ring 5 is equipped with axial poles tooth I8, the edges axial poles tooth I8
Radial to extend to the periphery of axis 1, there are gaps, magnetic fluid to be set in the gap between the periphery of axis 1；The centre
Prolong the end face that the outer end face of pole shoe ring 4 is equipped with radial direction pole tooth I9, the radial pole tooth I9 magnet ring 6 axially inward
It stretches, there are gaps, magnetic fluid to be set in the gap between the end face of interior magnet ring 6；
The inner headed face of the intermediate pole shoe ring 4 is equipped with axial poles tooth II10, and the axial poles tooth II10 is radially
Extend to the periphery of axis 1, there are gaps, magnetic fluid to be set in the gap between the periphery of axis 1；The dynode
Be respectively equipped with radial pole tooth II11 on the outer end face at the both ends of boots ring 4, the radial pole tooth II11 respectively in axial direction to its two
The end face of other interior magnet ring 6 extends, and there are gaps, magnetic fluid to be set in the gap between the end face of interior magnet ring 6.
The left pole shoe ring 3, right pole shoe ring 5 respectively include axial rings I12 and radial ring I13, the axial rings I12
Inner circle extend towards 1 direction of axis, connect with one end of the periphery of radial ring I13, the periphery of axial rings I12 and shell 2
Inner headed face contact, the end face of axial rings I12 is contacted with outer magnet ring 7；The other end of the radial ring I13 is interior in an axial direction
The end face of magnet ring 6 extends；The axial poles tooth I8 is set on the inner headed face of radial ring I13, the radial pole tooth I9
Set on radial ring I13 on the end face of interior magnet ring 6.
The periphery of the axial rings I12, which is equipped in annular groove I, the annular groove I, is equipped with sealing ring
I14。
The intermediate pole shoe ring 4 includes axial rings II15 and radial ring II16, the inner headed face of the axial rings II15
Extend to 1 direction of axis, intermediate with the periphery of radial ring 16II is connect, the inner circle of the periphery and shell 2 of axial rings II15
Face contacts, and the end face of axial rings II15 is contacted with outer magnet ring 7；The both ends of radial ring II16 both sides respectively in axial direction
Interior magnet ring 6 end face extend；The axial poles tooth II10 is set on the inner headed face of radial ring II16, the radial direction
Pole tooth II11 is respectively arranged on two end faces of radial ring 16.
The periphery of the axial rings II15, which is equipped in annular groove II, the annular groove II, is equipped with sealing ring
Ⅲ17。
The multistage disk device for sealing magnetic fluid, further includes left magnetism-isolating loop 18 and right magnetism-isolating loop 19；It is described it is left every
Magnet ring 18 is set to the left side of left pole shoe ring 3, is close to the inner wall setting of shell 2；The right magnetism-isolating loop 19 is set to right pole shoe ring 5
Right side, be close to shell 2 inner wall setting.
The multistage disk device for sealing magnetic fluid further includes left bearing 20 and right bearing 21, the left bearing 20
It is set on axis 1 with right bearing 21, the left bearing 20 is set to the left side of left magnetism-isolating loop 18, and the right bearing 21 is set
In the right side of right magnetism-isolating loop 19.
2-10 groups are arranged in the magnet ring group interval.
The axial poles tooth I8, radial direction pole tooth I9, axial poles tooth II10, radial direction pole tooth II11 are respectively to be intervally arranged
2~10 ring pole tooth compositions.
The interior magnet ring 6, outer magnet ring 7 are axial charging type permanent magnet, interior magnet ring 6, outer permanent magnetism
The magnetic line of force direction of body ring 7 is opposite.
The right side of the right bearing 21 is equipped with end cap 22, and the end cap 22 is sleeved on axis 1, by 2 right end seal of shell
It loads, sealing medium 23 is filled between the right bearing 21 and end cap 22.
Claims (9)
1. a kind of multistage disk device for sealing magnetic fluid, including axis（1）, shell（2）, left pole shoe ring（3）, intermediate pole shoe ring（4）、
Right pole shoe ring（5）, interior magnet ring（6）, outer magnet ring（7）, it is characterised in that：The left pole shoe ring（3）With right pole shoe
Ring（5）It is set in shell（2）And axis（1）Between；The left pole shoe ring（3）With right pole shoe ring（5）Between axially spaced set
Set more than two magnet ring groups；Pass through intermediate pole shoe ring between each magnet ring group（4）It separates, in described
Between pole shoe ring（4）It is set in shell（2）And axis（1）Between；Each magnet ring group includes mutual corresponding interior permanent magnetism
Body ring（6）With outer magnet ring（7）；The interior magnet ring（6）It is set to axis（1）Periphery on, the outer permanent magnetism
Body ring（7）It is arranged in shell（2）Inner wall on；The interior magnet ring（6）With outer magnet ring（7）It is axially coincident, it is interior
Magnet ring（6）Axial width be less than outer magnet ring（7）Axial width, and interior magnet ring（6）Periphery and
Outer magnet ring（7）Inner headed face between there are gaps；The interior magnet ring（6）Radial orthographic projection is located at outer permanent magnet
Ring（7）Inner headed face region centre；The left pole shoe ring（3）, right pole shoe ring（5）Inner headed face be equipped with axial poles tooth I
（8）, the axial poles tooth I（8）Radially to axis（1）Periphery extend, with axis（1）Periphery between there are gap,
Magnetic fluid is set in the gap；The intermediate pole shoe ring（4）Outer end face be equipped with radial direction pole tooth I（9）, the radial pole
Tooth I（9）Magnet ring axially inward（6）End face extend, with interior magnet ring（6）End face between there are gap, magnetic currents
Body is set in the gap；The intermediate pole shoe ring（4）Inner headed face be equipped with axial poles tooth II（10）, the axial poles tooth
II（10）Radially to axis（1）Periphery extend, with axis（1）Periphery between there are gap, magnetic fluid is set to the gap
In；The intermediate pole shoe ring（4）Both ends outer end face on be respectively equipped with radial pole tooth II（11）, the radial pole tooth II
（11）Respectively in axial direction to the interior magnet ring of its both sides（6）End face extend, with interior magnet ring（6）End face between there are
Gap, magnetic fluid are set in the gap.
2. multistage disk device for sealing magnetic fluid as described in claim 1, it is characterised in that：The left pole shoe ring（3）, it is right
Pole shoe ring（5）Respectively include axial rings I（12）With radial ring I（13）, the axial rings I（12）Inner circle towards axis（1）Side
To extension, with radial ring I（13）Periphery one end connection, axial rings I（12）Periphery and shell（2）Inner headed face connect
It touches, axial rings I（12）End face and outer magnet ring（7）Contact；The radial ring I（13）The other end in an axial direction in permanent magnetism
Body ring（6）End face extend；The axial poles tooth I（8）Set on radial ring I（13）Inner headed face on, the radial pole tooth I
（9）Set on radial ring I（13）Close to interior magnet ring（6）End face on；The axial rings I（12）Periphery be equipped with ring
Sealing ring I is equipped in connected in star I, the annular groove I（14）.
3. multistage disk device for sealing magnetic fluid as described in claim 1, it is characterised in that：The intermediate pole shoe ring（4）
Including axial rings II（15）With radial ring II（16）, the axial rings II（15）Inner circle towards axis（1）Direction extends, with diameter
To ring II（16）Periphery intermediate connection, axial rings II（15）Periphery and shell（2）Inner headed face contact, axial rings
II（15）End face and outer magnet ring（7）Contact；The radial ring II（16）Both ends respectively in axial direction both sides it is interior forever
Magnet ring（6）End face extend；The axial poles tooth II（10）Set on radial ring II（16）Inner headed face on, the radial direction
Pole tooth II（11）It is respectively arranged on radial ring II（16）Two end faces on；The axial rings II（15）Periphery be equipped with ring
Sealing ring II is equipped in connected in star II, the annular groove II（17）.
4. multistage disk device for sealing magnetic fluid as described in claim 1, it is characterised in that：It further include left magnetism-isolating loop（18）With
Right magnetism-isolating loop（19）；The left magnetism-isolating loop（18）Set on left pole shoe ring（3）Left side, be close to shell（2）Inner wall setting；Institute
The right magnetism-isolating loop stated（19）Set on right pole shoe ring（5）Right side, be close to shell（2）Inner wall setting.
5. multistage disk device for sealing magnetic fluid as described in claim 1, it is characterised in that：It further include left bearing（20）The right side and
Bearing（21）, the left bearing（20）And right bearing（21）It is set in axis（1）On, the left bearing（20）Set on a left side
Magnetism-isolating loop（18）Left side, the right bearing（21）Set on right magnetism-isolating loop（19）Right side.
6. multistage disk device for sealing magnetic fluid as described in claim 1, it is characterised in that：The magnet ring group interval
2-10 groups are set.
7. multistage disk device for sealing magnetic fluid as described in claim 1, it is characterised in that：The axial poles tooth I（8）、
Radial pole tooth I（9）, axial poles tooth II（10）, radial direction pole tooth II（11）2 ~ 10 ring pole teeth composition being respectively intervally arranged.
8. multistage disk device for sealing magnetic fluid as described in claim 1, it is characterised in that：The interior magnet ring（6）、
Outer magnet ring（7）It is axial charging type permanent magnet, interior magnet ring（6）, outer magnet ring（7）Magnetic line of force direction phase
Instead.
9. multistage disk device for sealing magnetic fluid as claimed in claim 5, it is characterised in that：The right bearing（21）The right side
Side is equipped with end cap（22）, the end cap（22）It is sleeved on axis（1）On, by shell（2）Right end is encapsulated, the right bearing
（21）And end cap（22）Between be filled with sealing medium（23）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721732169.1U CN207740466U (en) | 2017-12-13 | 2017-12-13 | A kind of multistage disk device for sealing magnetic fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721732169.1U CN207740466U (en) | 2017-12-13 | 2017-12-13 | A kind of multistage disk device for sealing magnetic fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207740466U true CN207740466U (en) | 2018-08-17 |
Family
ID=63117945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721732169.1U Expired - Fee Related CN207740466U (en) | 2017-12-13 | 2017-12-13 | A kind of multistage disk device for sealing magnetic fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207740466U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843793A (en) * | 2018-09-03 | 2018-11-20 | 广西科技大学 | A kind of concave-convex type device for sealing magnetic fluid |
| CN110762224A (en) * | 2019-11-25 | 2020-02-07 | 广西科技大学 | Divergent split-tooth stepped magnetic fluid rotary sealing device |
-
2017
- 2017-12-13 CN CN201721732169.1U patent/CN207740466U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843793A (en) * | 2018-09-03 | 2018-11-20 | 广西科技大学 | A kind of concave-convex type device for sealing magnetic fluid |
| CN110762224A (en) * | 2019-11-25 | 2020-02-07 | 广西科技大学 | Divergent split-tooth stepped magnetic fluid rotary sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180817 Termination date: 20191213 |
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| CF01 | Termination of patent right due to non-payment of annual fee |