CN207393960U - A kind of staged device for sealing magnetic fluid - Google Patents
A kind of staged device for sealing magnetic fluid Download PDFInfo
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- CN207393960U CN207393960U CN201721453263.3U CN201721453263U CN207393960U CN 207393960 U CN207393960 U CN 207393960U CN 201721453263 U CN201721453263 U CN 201721453263U CN 207393960 U CN207393960 U CN 207393960U
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- pole shoe
- periphery
- magnet ring
- axis
- ring
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Abstract
The utility model is intended to provide a kind of staged device for sealing magnetic fluid, and including multi-diameter shaft, shell, left pole shoe, right pole shoe, intermediate pole shoe, magnet ring, the multi-diameter shaft is set within shell；The multi-diameter shaft includes multiple secondary axis, and the diameter of multiple secondary axis prolongs axially to be sequentially reduced to the left；The intermediate pole shoe sets one group or more；The left pole shoe, intermediate pole shoe, right pole shoe are spaced according to order from left to right on the inner wall for being installed on shell successively, the left pole shoe, intermediate pole shoe, right pole shoe correspond to the periphery of each secondary axis respectively, gap is left between secondary axis periphery, magnetic fluid is located in the gap；The magnet ring is arranged between each pole shoe.The utility model can realize sealing under the special operation conditions 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 staged device for sealing magnetic fluid.
Background technology
When Magneticfluid Seal Technique is applied in major diameter, high speed and heavily loaded sealed environment, the magnetic fluid in seal clearance
It often fails because seal clearance is excessive, therefore the pressure-resistant performance for improving wide arc gap magnet fluid sealing is the hot spot of current research
One of problem.
One of the method for improving the pressure-resistant performance of magnet fluid sealing under wide arc gap be by improving magnetic fluid sealing structure, it is such as right
Than the 2 (Publication No. of sealing device and documents described in document 1 (patent of Publication No. CN201513565U)
The patent of CN202418592U) described in sealing device.Although the relatively common magnetic current of two kinds of sealing devices described in document above
Body sealing performance is greatly improved, but the high sealing performance of the special operation conditions such as high-speed overload is still not achieved in its sealing performance
It is required that.
Magnet fluid sealing is to generate magnetic field force in seal clearance using permanent magnet magnetic fluid is secured firmly between sealing
In gap, the pressure difference of both sides is resisted, so as to achieve the effect that sealing.
Utility model content
The purpose of this utility model is to provide a kind of staged device for sealing magnetic fluid, so as to solve existing sealing device without
Method realizes the problem of the special operation conditions high sealing performances such as high-speed overload requirement so that the sealing technique is successfully applied to high-speed overload
It waits under special operation conditions.
The technical solution of the utility model is as follows：
A kind of staged device for sealing magnetic fluid, including multi-diameter shaft, shell, left pole shoe, right pole shoe, intermediate pole shoe, permanent magnetism
Body ring, the multi-diameter shaft are set within shell；
The multi-diameter shaft includes multiple secondary axis, and the diameter of multiple secondary axis prolongs axially to be sequentially reduced to the left；
The intermediate pole shoe sets one group or more；The left pole shoe, intermediate pole shoe, right pole shoe are according to from left to right
Interval is installed on the inner wall of shell order successively, and the left pole shoe, intermediate pole shoe, right pole shoe correspond to each secondary axis respectively
Periphery, gap is left between secondary axis periphery, magnetic fluid is located in the gap；
Be respectively equipped with opposite spacing ring on the corresponding intermediate pole shoe of the left pole shoe, the left pole shoe and its
Be equipped with magnet ring between corresponding intermediate pole shoe, the periphery of the magnet ring at this with positioned at left pole shoe, intermediate pole shoe it
Between spacing ring inner headed face contact, two end faces of the magnet ring at this respectively with the right side of left pole shoe and centre pole shoe
Left side contact；
Opposite spacing ring is respectively equipped between the intermediate pole shoe, permanent magnet is equipped between the intermediate pole shoe
Ring, the periphery of the magnet ring at this are contacted with the inner headed face of the spacing ring between intermediate pole shoe, the permanent magnet at this
Two end faces of ring end contact with the intermediate pole shoe of its both sides respectively；
Opposite spacing ring is respectively equipped on the corresponding intermediate pole shoe of the right pole shoe, the right pole shoe is right with it
Equipped with magnet ring, the periphery of the magnet ring at this and between intermediate pole shoe and right pole shoe between pole shoe among answering
The inner headed face contact of spacing ring, two end faces of the magnet ring at this respectively with the left side of right pole shoe and the right side of centre pole shoe
End contact.
Preferably, the quantity of the secondary axis is 2-10.
Preferably, the secondary axis includes primary axis, two level axis and three-level axis, the primary axis, two level axis and three
Grade axis prolongs axially to be set gradually from right to left, and the diameter of primary axis, two level axis and three-level axis is sequentially reduced；
The position of the periphery of primary axis is corresponded on the inner wall of the shell right pole shoe, right pole shoe and primary axis outer circle
Gap is left between face, magnetic fluid is located in the gap, and right pole shoe left end face is equipped with spacing ring；
The position that the periphery of three-level axis is corresponded on the inner wall of the shell is provided with left pole shoe, left pole shoe and three-level axis
Gap is left between periphery, magnetic fluid is located in the gap, and left pole shoe its right end face is equipped with spacing ring；
The position that the periphery of two level axis is corresponded on the inner wall of the shell is provided with intermediate pole shoe, the intermediate pole shoe with
Gap is left between two level axis periphery, magnetic fluid is located in the gap, which is equipped with spacing ring, right
Side spacing ring is corresponding with the spacing ring of right pole shoe, positioned at same radial height, the spacing ring of left side spacing ring and left pole shoe
It is corresponding, positioned at same radial height；
It is equipped with magnet ring between the right pole shoe and intermediate pole shoe, the periphery of the magnet ring at this and is located at
Between the inner headed face of spacing ring between pole shoe and right pole shoe contact, two end faces of the magnet ring at this respectively with right pole shoe
Left side and the right side contact of intermediate pole shoe；
It is equipped with magnet ring between the left pole shoe, intermediate pole shoe, the periphery of the magnet ring at this and is located at
Between the inner headed face of spacing ring between pole shoe and left pole shoe contact, two end faces of the magnet ring at this respectively with left pole shoe
Right side and the left side contact of intermediate pole shoe.
Preferably, on direction from left to right, the radial height of each magnet ring is incremented by successively.
Preferably, left magnetism-isolating loop and right magnetism-isolating loop are further included；The left magnetism-isolating loop is arranged on the left side of left pole shoe, is close to outer
The inner wall of shell is set；The right magnetism-isolating loop is arranged on the right side of right pole shoe, and the inner wall for being close to shell is set.
Preferably, left bearing and right bearing are further included, the left bearing is arranged on the left side of left magnetism-isolating loop, is set in ladder
On axis；The right bearing is arranged on the right side of right magnetism-isolating loop, is set on multi-diameter shaft.
Preferably, groove, the groove are respectively equipped on the periphery of the left pole shoe, intermediate pole shoe, right pole shoe
Equipped with sealing ring.
The utility model is by ladder shaft design, and by the Design of Permanent Magnet between pole shoe and pole shoe to be stepped,
Realize staged magnet fluid sealing；The utility model sealing device using multipole boots independent design, reduces the difficulty that assembling positions
Degree；It is preferred that the structure of three-level secondary axis, the complexity of structure is reduced while sealing effect is ensured；It is simultaneously that permanent magnet is embedding
Enter in the limited block formed between pole shoe, the length of magnetic loop is reduced in gap while reducing taken up space above limited block again
Degree, increases magnetic field intensity in seal clearance, greatly reduces the loss of the magnetic fluid in seal failure；Also, from left to right
Direction on, the radial height of each magnet ring is incremented by successively so that the magnet fluid sealing formed in seal clearance is more reliable,
It realizes the stability of magnetic source device, improves the voltage endurance capability of magnet fluid sealing under the conditions of wide arc gap, expand its trouble free service
Scope.
Description of the drawings
Fig. 1 is the structure diagram of sealing device described in the utility model；
Each sequence number mark and corresponding title are as follows in figure：
1- multi-diameter shafts 1,2- shells, the left pole shoes of 3-, the right pole shoes of 4-, 5- centres pole shoe, 6- magnet rings, 7- spacing rings, 8-
Left magnetism-isolating loop, the right magnetism-isolating loops of 9-, 10- left bearings, 11- right bearings, 12- grooves, 13- sealing rings；101- primary axis, 102- two levels
Axis, 103- three-level axis.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, staged device for sealing magnetic fluid provided in this embodiment, including multi-diameter shaft 1, shell 2, left pole shoe
3rd, right pole shoe 4, intermediate pole shoe 5, magnet ring 6, the multi-diameter shaft 1 are set within shell 2；
The multi-diameter shaft 1 includes multiple secondary axis, and the diameter of multiple secondary axis prolongs axially to be sequentially reduced to the left；
The intermediate pole shoe 5 sets one group or more；The left pole shoe 3, intermediate pole shoe 5, right pole shoe 4 according to from a left side to
Right order is spaced successively to be installed on the inner wall of shell 2, and the left pole shoe 3, intermediate pole shoe 5, right pole shoe 4 are corresponding each respectively
The periphery of a secondary axis, leaves gap, magnetic fluid is located in the gap between secondary axis periphery；
Opposite spacing ring 7, the left pole shoe 3 are respectively equipped on the corresponding intermediate pole shoe 5 of the left pole shoe 3
Between corresponding intermediate pole shoe 5 be equipped with magnet ring 6, the periphery of the magnet ring 6 at this with positioned at left pole shoe 3, in
Between spacing ring 7 between pole shoe 5 inner headed face contact, two end faces of the magnet ring 6 at this right end with left pole shoe 3 respectively
Face and the left side contact of intermediate pole shoe 5；
Opposite spacing ring 7 is respectively equipped between the intermediate pole shoe 5, permanent magnetism is equipped between the intermediate pole shoe 5
Body ring 6, the periphery of the magnet ring 6 at this are contacted with the inner headed face of the spacing ring 7 between intermediate pole shoe 5, at this
Two end faces of magnet ring 6 end contact with the intermediate pole shoe 5 of its both sides respectively；
Be respectively equipped with opposite spacing ring 7 on the corresponding intermediate pole shoe 5 of the right pole shoe 4, the right pole shoe 4 with
It is equipped with magnet ring 6 between corresponding to intermediate pole shoe 5, and the periphery of the magnet ring 6 at this is with being located at intermediate pole shoe 5 and right pole
The inner headed face contact of spacing ring 7 between boots 4, two end faces of the magnet ring 6 at this respectively with the left side of right pole shoe 4 and
The right side contact of intermediate pole shoe 5；
The secondary axis includes primary axis 101, two level axis 102 and three-level axis 103, the primary axis 101, two level axis
102 and three-level axis 103 prolong it is axial set gradually from right to left, the diameter of primary axis 101, two level axis 102 and three-level axis 103 is successively
Reduce；
There are right pole shoe 4, right pole shoe 4 and level-one in the position for the periphery for corresponding to primary axis 101 on the inner wall of the shell 2
Gap is left between 101 periphery of axis, magnetic fluid is located in the gap, and right 4 left end face of pole shoe is equipped with spacing ring 7；
The position for the periphery for corresponding to three-level axis 103 on the inner wall of the shell 2 is provided with left pole shoe 3, left pole shoe 3 with
Gap is left between 103 periphery of three-level axis, magnetic fluid is located in the gap, and left 3 its right end face of pole shoe is equipped with spacing ring 7；
The position for the periphery for corresponding to two level axis 102 on the inner wall of the shell 2 is provided with intermediate pole shoe 5, among this
Gap is left between 102 periphery of pole shoe 5 and two level axis, magnetic fluid is located in the gap, which is equipped with
Spacing ring 7, right side spacing ring 7 is corresponding with the spacing ring 7 of right pole shoe 4, positioned at same radial height, left side spacing ring 7
It is corresponding with the spacing ring 7 of left pole shoe 3, positioned at same radial height；
Magnet ring 6, the periphery of the magnet ring 6 at this and position are equipped between the right pole shoe 4 and intermediate pole shoe 5
The inner headed face of spacing ring 7 between intermediate pole shoe 5 and right pole shoe 4 contacts, two end faces of the magnet ring 6 at this respectively with
The left side of right pole shoe 4 and the right side contact of intermediate pole shoe 5；
Magnet ring 6, the periphery of the magnet ring 6 at this and position are equipped between the left pole shoe 3, intermediate pole shoe 5
The inner headed face of spacing ring 7 between intermediate pole shoe 5 and left pole shoe 3 contacts, two end faces of the magnet ring 6 at this respectively with
The right side of left pole shoe 3 and the left side contact of intermediate pole shoe 5；
On direction from left to right, the radial height of each magnet ring 6 is incremented by successively；
Further include left magnetism-isolating loop 8 and right magnetism-isolating loop 9；The left magnetism-isolating loop 8 is arranged on the left side of left pole shoe 3, is close to shell 2
Inner wall set；The right magnetism-isolating loop 9 is arranged on the right side of right pole shoe 4, and the inner wall for being close to shell 2 is set；
Left bearing 10 and right bearing 11 are further included, the left bearing 10 is arranged on the left side of left magnetism-isolating loop 8, is set in ladder
On axis 1；The right bearing 11 is arranged on the right side of right magnetism-isolating loop 9, is set on multi-diameter shaft 1；
The left pole shoe 3, intermediate pole shoe 5, right pole shoe 4 periphery on be respectively equipped with groove 12, the groove 12
Equipped with sealing ring 13.
Claims (7)
1. a kind of staged device for sealing magnetic fluid, including multi-diameter shaft（1）, shell（2）, left pole shoe（3）, right pole shoe（4）, it is intermediate
Pole shoe（5）, magnet ring（6）, the multi-diameter shaft（1）It is set in shell（2）Within, it is characterised in that：
The multi-diameter shaft（1）Including multiple secondary axis, the diameter of multiple secondary axis prolongs axially to be sequentially reduced to the left；
The intermediate pole shoe（5）Set one group or more；The left pole shoe（3）, intermediate pole shoe（5）, right pole shoe（4）According to from
Left-to-right order is spaced successively is installed on shell（2）Inner wall on, the left pole shoe（3）, intermediate pole shoe（5）, right pole shoe
（4）The periphery of each secondary axis is corresponded to respectively, gap is left between secondary axis periphery, magnetic fluid is located in the gap；
The left pole shoe（3）Corresponding intermediate pole shoe（5）On be respectively equipped with opposite spacing ring（7）, the left pole
Boots（3）Corresponding intermediate pole shoe（5）Between be equipped with magnet ring（6）, the magnet ring at this（6）Periphery with being located at
Left pole shoe（3）, intermediate pole shoe（5）Between spacing ring（7）Inner headed face contact, the magnet ring at this（6）Two end faces
Respectively with left pole shoe（3）Right side and intermediate pole shoe（5）Left side contact；
The intermediate pole shoe（5）Between be respectively equipped with opposite spacing ring（7）, the intermediate pole shoe（5）Between be equipped with forever
Magnet ring（6）, the magnet ring at this（6）Periphery with positioned at intermediate pole shoe（5）Between spacing ring（7）Inner headed face connect
It touches, the magnet ring at this（6）Two end faces intermediate pole shoe with its both sides respectively（5）End contact；
The right pole shoe（4）Corresponding intermediate pole shoe（5）On be respectively equipped with opposite spacing ring（7）, the right pole shoe
（4）Corresponding intermediate pole shoe（5）Between be equipped with magnet ring（6）, the magnet ring at this（6）Periphery with positioned at centre
Pole shoe（5）With right pole shoe（4）Between spacing ring（7）Inner headed face contact, the magnet ring at this（6）Two end faces difference
With right pole shoe（4）Left side and intermediate pole shoe（5）Right side contact.
2. staged device for sealing magnetic fluid as described in claim 1, it is characterised in that：The quantity of the secondary axis is 2-
10.
3. staged device for sealing magnetic fluid as described in claim 1, it is characterised in that：
The secondary axis includes primary axis（101）, two level axis（102）With three-level axis（103）, the primary axis（101）, two
Grade axis（102）With three-level axis（103）Prolong and axially set gradually from right to left, primary axis（101）, two level axis（102）With three-level axis
（103）Diameter be sequentially reduced；
The shell（2）Inner wall on correspond to primary axis（101）The position of periphery have right pole shoe（4）, right pole shoe（4）With
Primary axis（101）Gap is left between periphery, magnetic fluid is located in the gap, right pole shoe（4）Left end face is equipped with spacing ring
（7）；
The shell（2）Inner wall on correspond to three-level axis（103）The position of periphery be provided with left pole shoe（3）, left pole shoe
（3）With three-level axis（103）Gap is left between periphery, magnetic fluid is located in the gap, left pole shoe（3）Its right end face is equipped with limit
Position ring（7）；
The shell（2）Inner wall on correspond to two level axis（102）The position of periphery be provided with intermediate pole shoe（5）, in this
Between pole shoe（5）With two level axis（102）Gap is left between periphery, magnetic fluid is located in the gap, the intermediate pole shoe（5）Both sides
End face is equipped with spacing ring（7）, right side spacing ring（7）With right pole shoe（4）Spacing ring（7）It is corresponding, it is high positioned at same radial direction
Degree, left side spacing ring（7）With left pole shoe（3）Spacing ring（7）It is corresponding, positioned at same radial height；
The right pole shoe（4）With intermediate pole shoe（5）Between be equipped with magnet ring（6）, the magnet ring at this（6）Periphery
With positioned at intermediate pole shoe（5）With right pole shoe（4）Between spacing ring（7）Inner headed face contact, the magnet ring at this（6）Two
A end face respectively with right pole shoe（4）Left side and intermediate pole shoe（5）Right side contact；
The left pole shoe（3）, intermediate pole shoe（5）Between be equipped with magnet ring（6）, the magnet ring at this（6）Periphery
With positioned at intermediate pole shoe（5）With left pole shoe（3）Between spacing ring（7）Inner headed face contact, the magnet ring at this（6）Two
A end face respectively with left pole shoe（3）Right side and intermediate pole shoe（5）Left side contact.
4. staged device for sealing magnetic fluid as claimed in claim 3, it is characterised in that：On direction from left to right, respectively
A magnet ring（6）Radial height it is incremented by successively.
5. staged device for sealing magnetic fluid as claimed in claim 3, it is characterised in that：Further include left magnetism-isolating loop（8）And the right side
Magnetism-isolating loop（9）；The left magnetism-isolating loop（8）Arranged on left pole shoe（3）Left side, be close to shell（2）Inner wall set；The right side
Magnetism-isolating loop（9）Arranged on right pole shoe（4）Right side, be close to shell（2）Inner wall set.
6. staged device for sealing magnetic fluid as claimed in claim 5, it is characterised in that：Further include left bearing（10）And right axle
It holds（11）, the left bearing（10）Arranged on left magnetism-isolating loop（8）Left side, be set in multi-diameter shaft（1）On；The right bearing
（11）Arranged on right magnetism-isolating loop（9）Right side, be set in multi-diameter shaft（1）On.
7. staged device for sealing magnetic fluid as described in claim 1, it is characterised in that：The left pole shoe（3）, dynode
Boots（5）, right pole shoe（4）Periphery on be respectively equipped with groove（12）, the groove（12）Equipped with sealing ring（13）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721453263.3U CN207393960U (en) | 2017-11-03 | 2017-11-03 | A kind of staged device for sealing magnetic fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721453263.3U CN207393960U (en) | 2017-11-03 | 2017-11-03 | A kind of staged device for sealing magnetic fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207393960U true CN207393960U (en) | 2018-05-22 |
Family
ID=62324464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721453263.3U Expired - Fee Related CN207393960U (en) | 2017-11-03 | 2017-11-03 | A kind of staged device for sealing magnetic fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207393960U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7018681B1 (en) * | 2021-01-12 | 2022-02-14 | ツィンファ ユニバーシティ | Magnetic field adjustable ferrofluidic seal device |
-
2017
- 2017-11-03 CN CN201721453263.3U patent/CN207393960U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7018681B1 (en) * | 2021-01-12 | 2022-02-14 | ツィンファ ユニバーシティ | Magnetic field adjustable ferrofluidic seal device |
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| 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: 20180522 Termination date: 20191103 |
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| CF01 | Termination of patent right due to non-payment of annual fee |