CN207333722U - A kind of cross staged device for sealing magnetic fluid - Google Patents
A kind of cross staged device for sealing magnetic fluid Download PDFInfo
- Publication number
- CN207333722U CN207333722U CN201721452559.3U CN201721452559U CN207333722U CN 207333722 U CN207333722 U CN 207333722U CN 201721452559 U CN201721452559 U CN 201721452559U CN 207333722 U CN207333722 U CN 207333722U
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- face
- pole shoe
- jackshaft
- cross
- periphery
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model aims to provide a kind of cross staged device for sealing magnetic fluid, including multi-diameter shaft, shell, left pole shoe, right pole shoe, magnet ring, the multi-diameter shaft are set within shell；The multi-diameter shaft includes multigroup secondary axis that the jackshaft of diameter maximum and diameter are sequentially reduced, symmetrical to demarcate using the intermediate radial section of jackshaft；The position that jackshaft periphery is corresponded on the inner wall of the shell is provided with magnet ring, and gap is left between the magnet ring and jackshaft periphery；The left pole shoe, right pole shoe are respectively arranged on magnet ring both sides, and left pole shoe, right pole shoe are symmetrical；The junction of periphery and end face is equipped with cross pole tooth on the left pole shoe, right pole shoe, the cross pole tooth is respectively to the periphery of secondary axis, and the end face extension of secondary axis or jackshaft, gap is left between the periphery and the end face, magnetic fluid is located in the gap.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 cross staged magnet fluid sealing dress
Put.
Background technology
When magnetic fluid seal technology is applied in major diameter, high speed and heavily loaded sealed environment, the magnetism in seal clearance
Fluid often fails because seal clearance is excessive, therefore the pressure-resistant performance for improving wide arc gap magnetic fluid seal is current research
One of hot issue.
One of the method for improving the pressure-resistant performance of wide arc gap magnetic Fluid Sealing be by improving magnetic fluid seal structure,
2 (Publication No. of sealing device and documents as described in documents 1 (patent of Publication No. CN 103115152A)
The patent of CN103498939A) described in sealing device.Although two kinds of relatively common magnetism of sealing device described in document above
Fluid Sealing performance is greatly improved, but its sealing performance does not reach the high leakproofness of the special operation conditions such as high-speed overload still
It can require.
Magnet fluid sealing is to produce 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 reach the effect of sealing.
Utility model content
The purpose of this utility model is to provide a kind of cross staged device for sealing magnetic fluid, so as to solve existing sealing
Device can not realize the problem of the special operation condition high sealing performance requirement such as high-speed overload so that the sealing technique is successfully applied to height
Under the special operation conditions such as fast heavy duty.
The technical solution of the utility model is as follows：
A kind of cross staged device for sealing magnetic fluid, including multi-diameter shaft, shell, left pole shoe, right pole shoe, permanent magnet
Ring, the multi-diameter shaft are set within shell；
The multi-diameter shaft includes multigroup secondary axis that the jackshaft of diameter maximum and diameter are sequentially reduced, the secondary
Axis is arranged along the side of jackshaft, symmetrical to demarcate using the intermediate radial section of jackshaft；
The position that jackshaft periphery is corresponded on the inner wall of the shell is provided with magnet ring, the magnet ring
Gap is left between jackshaft periphery；The left pole shoe, right pole shoe are respectively arranged on magnet ring both sides, left pole shoe, the right side
Pole shoe is symmetrical；Left pole shoe, the end face of right pole shoe and the anchor ring periphery and end with jackshaft or secondary axis respectively
Face is corresponding；
The junction of periphery and end face is equipped with cross pole tooth, the cross pole tooth on the left pole shoe, right pole shoe
Corresponding to the junction between jackshaft and secondary axis junction or secondary axis, the cross pole tooth is respectively to the outer of secondary axis
Disc, and the end face extension of secondary axis or jackshaft, leave gap, magnetic fluid is located at should between the periphery and the end face
In gap.
Preferably, the quantity of the secondary axis is 2-10 groups, the number of the left pole shoe and cross pole tooth on right pole shoe
Amount is corresponding with the quantity of secondary axis.
Preferably, the secondary axis includes two level axis and three-level axis, and the left and right sides difference of the jackshaft is successively
Two level axis and three-level axis, the jackshaft, two level axis, the diameter of three-level axis is set to be sequentially reduced；
Anchor ring I, end face I, anchor ring II, end face II are respectively equipped with the left pole shoe and right pole shoe；
The anchor ring I is corresponding with the periphery of three-level axis, and sky is left between the anchor ring I and three-level axis
Gap；The end face I is corresponding with the end face of two level axis, and gap is left between the end face I and two level axis；Anchor ring I, end
The junction of face I is equipped with cross pole tooth, and the cross pole tooth extends to the periphery of the end face of two level axis, three-level axis respectively,
Gap is left between the end face and the periphery, magnetic fluid is placed in the gap；
The anchor ring II is corresponding with the periphery of two level axis, and sky is left between the anchor ring II and two level axis
Gap；The end face II is corresponding with the end face of jackshaft, and gap is left between the end face II and jackshaft；Anchor ring
II, the junction of end face II are equipped with cross pole tooth, and the cross pole tooth is respectively to the end face of jackshaft, the periphery of two level axis
Extension, leaves gap, magnetic fluid is placed in the gap between the end face and the periphery.
Preferably, the secondary axis further includes three-ten grades of axis that diameter successively decreases successively, and left pole shoe and right pole shoe, which correspond to, to be set
Put；Pole tooth and left pole shoe and the corresponding set-up mode of right pole shoe are consistent with aforesaid way on three-ten grades of axis.
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 left 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 is respectively equipped with the periphery of the left pole shoe and right pole shoe, the groove is equipped with sealing
Circle.
The utility model is by designing a kind of staged shaft and staged pole shoe, using the stator arrangement of cross pole tooth
Structure design, considerably increases the magnetic flux in magnetic circuit, greatly reduces the loss of the magnetic fluid in seal failure, improves
The voltage endurance capability and sealing reliability of the special operation condition magnetic Fluid Sealing such as high-speed overload, expand its range of safety operation.
The specific multi-diameter shaft and pole shoe of the utility model preferred solution, the setting structure of pole tooth, can preferably realize more
The technique effect of the assemblied stereo sealing in orientation, and can realize and the permanent magnet magnetic line of force is efficiently used, it is only necessary to one
Group permanent magnet, it becomes possible to realize the sealing effect under the special operation conditions such as good high-speed overload, cost is lower.
Brief description of the drawings
Fig. 1 is the structure diagram of sealing device described in the utility model；
Fig. 2 is the left pole shoe enlarged diagram of sealing device described in the utility model；
Each sequence number sign 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- magnet rings, 6- crosses pole tooth, 7- anchor rings I, 8-
The left magnetism-isolating loop of end face I, 9- anchor ring II, 10- end face II, 11-, the right magnetism-isolating loops of 12-, 13- left bearings, 14- right bearings, 15- are recessed
Groove, 16- sealing rings；101- jackshafts, 102- two level axis, 103- three-level axis.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
Embodiment 1
As shown in Figs. 1-2, cross staged device for sealing magnetic fluid provided in this embodiment, including multi-diameter shaft 1, shell
2nd, left pole shoe 3, right pole shoe 4, magnet ring 5, the multi-diameter shaft 1 are set within shell 2；
The multi-diameter shaft 1 includes multigroup secondary axis that the jackshaft 101 of diameter maximum and diameter are sequentially reduced, described
Secondary axis is arranged along the side of jackshaft 101, symmetrical to demarcate using the intermediate radial section of jackshaft 101；
The position that 101 periphery of jackshaft is corresponded on the inner wall of the shell 2 is provided with magnet ring 5, it is described forever
Gap is left between 101 periphery of magnet ring 5 and jackshaft；The left pole shoe 3, right pole shoe 4 are respectively arranged on 5 liang of magnet ring
Side, left pole shoe 3, right pole shoe 4 are symmetrical；Left pole shoe 3, the end face of right pole shoe 4 and the anchor ring respectively with jackshaft 101 or
The periphery of secondary axis and end face are corresponding；
The junction of periphery and end face is equipped with cross pole tooth 6, the cross pole on the left pole shoe 3, right pole shoe 4
Tooth 6 corresponds to the junction between jackshaft 101 and secondary axis junction or secondary axis, and the cross pole tooth 6 is respectively to secondary
The periphery of level axis, and the end face extension of secondary axis or jackshaft 101, gap is left between the periphery and the end face,
Magnetic fluid is located in the gap；
The secondary axis includes two level axis 102 and three-level axis 103, the left and right sides of the jackshaft 101 respectively according to
Secondary setting two level axis 102 and three-level axis 103, the jackshaft 101, two level axis 102, the diameter of three-level axis 103 are sequentially reduced；
Anchor ring I7, end face I8, anchor ring II9, end face II10 are respectively equipped with the left pole shoe 3 and right pole shoe 4；
The anchor ring I7 is corresponding with the periphery of three-level axis 103, between the anchor ring I7 and three-level axis 103
Leave gap；The end face I8 is corresponding with the end face of two level axis 102, is left between the end face I8 and two level axis 102
Gap；Anchor ring I7, the junction of end face I8 are equipped with cross pole tooth 6, and the cross pole tooth 6 is respectively to the end of two level axis 102
Face, the periphery extension of three-level axis 103, leave gap, magnetic fluid is placed in the gap between the end face and the periphery；
The anchor ring II9 is corresponding with the periphery of two level axis 102, the anchor ring II9 and two level axis 102 it
Between leave gap；The end face II10 is corresponding with the end face of jackshaft 101, the end face II10 and jackshaft 101 it
Between leave gap；Anchor ring II9, the junction of end face II10 are equipped with cross pole tooth 6, and the cross pole tooth 6 is respectively to centre
The end face of axis 101, the periphery extension of two level axis 102, leave gap, magnetic fluid is placed in this between the end face and the periphery
In gap；
Further include left magnetism-isolating loop 11 and right magnetism-isolating loop 12；The left magnetism-isolating loop 11 is arranged on the left side of left pole shoe 3, is close to outer
The inner wall of shell 2 is set；The right magnetism-isolating loop 12 is arranged on the left side of right pole shoe 4, and the inner wall for being close to shell 2 is set；Further include a left side
Bearing 13 and right bearing 14, the left bearing 13 are arranged on the left side of left magnetism-isolating loop 11, are set on multi-diameter shaft 1；The right side
Bearing 14 is arranged on the right side of right magnetism-isolating loop 12, is set on multi-diameter shaft 1；
Groove 15 is respectively equipped with the left pole shoe 3 and the periphery of right pole shoe 4, the groove 15 is equipped with sealing ring
16。
Claims (7)
1. a kind of cross staged device for sealing magnetic fluid, including multi-diameter shaft（1）, shell（2）, left pole shoe（3）, right pole shoe
（4）, magnet ring（5）, the multi-diameter shaft（1）It is set in shell（2）Within, it is characterised in that：
The multi-diameter shaft（1）Include the jackshaft of diameter maximum（101）The multigroup secondary axis being sequentially reduced with diameter, it is described
Secondary axis is along jackshaft（101）Side arrangement, with jackshaft（101）Intermediate radial section for demarcate it is symmetrical；
The shell（2）Inner wall on correspond to jackshaft（101）The position of periphery is provided with magnet ring（5）, it is described
Magnet ring（5）With jackshaft（101）Gap is left between periphery；The left pole shoe（3）, right pole shoe（4）It is respectively arranged on
Magnet ring（5）Both sides, left pole shoe（3）, right pole shoe（4）Symmetrically；The left pole shoe（3）, right pole shoe（4）End face and
Anchor ring respectively with jackshaft（101）Or the periphery of secondary axis and end face it is corresponding；
The left pole shoe（3）, right pole shoe（4）The junction of upper periphery and end face is equipped with cross pole tooth（6）, the cross
Pole tooth（6）Corresponding to jackshaft（101）With the junction between secondary axis junction or secondary axis, the cross pole tooth（6）
Respectively to the periphery of secondary axis, and the end face extension of secondary axis or jackshaft 101, stayed between the periphery and the end face
There is gap, magnetic fluid is located in the gap.
2. cross staged device for sealing magnetic fluid as claimed in claim 1, it is characterised in that：The number of the secondary axis
Measure as 2-10 groups, the left pole shoe（3）With right pole shoe（4）Upper cross pole tooth（6）Quantity it is corresponding with the quantity of secondary axis.
3. cross staged device for sealing magnetic fluid as claimed in claim 1, it is characterised in that：
The secondary axis includes two level axis（102）With three-level axis（103）, the jackshaft（101）The left and right sides difference
Set gradually two level axis（102）With three-level axis（103）, the jackshaft（101）, two level axis（102）, three-level axis（103）'s
Diameter is sequentially reduced；
The left pole shoe（3）With right pole shoe（4）On be respectively equipped with anchor ring I（7）, end face I（8）, anchor ring II（9）, end face
II（10）；
The anchor ring I（7）With three-level axis（103）Corresponding, the described anchor ring I of periphery（7）With three-level axis（103）
Between leave gap；The end face I（8）With two level axis（102）Corresponding, the described end face I in end face（8）With two level axis
（102）Between leave gap；Anchor ring I（7）, end face I（8）Junction be equipped with cross pole tooth（6）, the cross pole tooth
（6）Respectively to two level axis（102）End face, three-level axis（103）Periphery extension, left between the end face and the periphery
Gap, magnetic fluid are placed in the gap；
The anchor ring II（9）With two level axis（102）Corresponding, the described anchor ring II of periphery（9）With two level axis
（102）Between leave gap；The end face II（10）With jackshaft（101）Corresponding, the described end face II in end face（10）
With jackshaft（101）Between leave gap；Anchor ring II（9）, end face II（10）Junction be equipped with cross pole tooth（6）, it is described
Cross pole tooth（6）Respectively to jackshaft（101）End face, two level axis（102）Periphery extension, with the end face and this is cylindrical
Gap is left between face, magnetic fluid is placed in the gap.
4. cross staged device for sealing magnetic fluid as claimed in claim 3, it is characterised in that：The secondary axis also wraps
Include three-ten grades of axis that diameter successively decreases successively, left pole shoe（3）With right pole shoe（4）It is correspondingly arranged；Pole tooth and left pole on three-ten grades of axis
Boots（3）With right pole shoe（4）Corresponding set-up mode is consistent with the mode of claim 3.
5. cross staged device for sealing magnetic fluid as claimed in claim 3, it is characterised in that：Further include left magnetism-isolating loop
（11）With right magnetism-isolating loop（12）；The left magnetism-isolating loop（11）Arranged on left pole shoe（3）Left side, be close to shell（2）Inner wall set
Put；The right magnetism-isolating loop（12）Arranged on right pole shoe（4）Left side, be close to shell（2）Inner wall set.
6. cross staged device for sealing magnetic fluid as claimed in claim 5, it is characterised in that：Further include left bearing（13）
And right bearing（14）, the left bearing（13）Arranged on left magnetism-isolating loop（11）Left side, be set in multi-diameter shaft（1）On；Described
Right bearing（14）Arranged on right magnetism-isolating loop（12）Right side, be set in multi-diameter shaft（1）On.
7. cross staged device for sealing magnetic fluid as claimed in claim 1, it is characterised in that：The left pole shoe（3）
With right pole shoe（4）Periphery on be respectively equipped with groove（15）, the groove（15）Equipped with sealing ring（16）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721452559.3U CN207333722U (en) | 2017-11-03 | 2017-11-03 | A kind of cross staged device for sealing magnetic fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721452559.3U CN207333722U (en) | 2017-11-03 | 2017-11-03 | A kind of cross staged device for sealing magnetic fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207333722U true CN207333722U (en) | 2018-05-08 |
Family
ID=62364565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721452559.3U Expired - Fee Related CN207333722U (en) | 2017-11-03 | 2017-11-03 | A kind of cross staged device for sealing magnetic fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207333722U (en) |
-
2017
- 2017-11-03 CN CN201721452559.3U patent/CN207333722U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180508 Termination date: 20191103 |