CN203847710U - Magnetic grease sealing structure - Google Patents
Magnetic grease sealing structure Download PDFInfo
- Publication number
- CN203847710U CN203847710U CN201420292148.2U CN201420292148U CN203847710U CN 203847710 U CN203847710 U CN 203847710U CN 201420292148 U CN201420292148 U CN 201420292148U CN 203847710 U CN203847710 U CN 203847710U
- Authority
- CN
- China
- Prior art keywords
- pole
- magnetic
- permanent magnet
- utmost point
- rotating shaft
- 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 - Lifetime
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 30
- 239000004519 grease Substances 0.000 title abstract 5
- 239000000498 cooling water Substances 0.000 claims abstract description 8
- 230000007704 transition Effects 0.000 claims abstract description 5
- 230000004323 axial length Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 230000035699 permeability Effects 0.000 abstract 6
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model relates to a magnetic grease sealing structure. The magnetic grease sealing structure comprises a rotating shaft, a supporting body, permeability pole shoes and a permanent magnet. Two or more permeability pole shoes are arranged between the rotating shaft and the inner circle of the supporting body, the permanent magnet is arranged between the two adjacent permeability pole shoes, the south pole and the north pole of the permanent magnet are arranged in the axial direction of the rotating shaft, the inner surfaces of the permeability pole shoes are provided with pole teeth I, the parts, corresponding to the pole teeth I, of the rotating shaft are provided with pole teeth II, and the pole teeth I and the pole teeth II are in clearance fit. Due to the fact that the rotating shaft and the permeability pole shoes in the magnetic grease sealing structure are provided with the pole teeth, the defects that the pole teeth independently arranged on the rotating shaft or the permeability pole shoes are extremely high or extremely wide are effectively overcome, the rigidity of the pole teeth is enhanced, the matched axial length of the rotating shaft and the pole shoes can be reduced, and sealing reliability of the magnetic grease sealing structure is enhanced through a cooling water channel with the circular arc transition.
Description
Technical field
The utility model relates to a kind of sealing configuration, especially relates to a kind of magnetic fat sealing configuration.
Background technique
Magnetic fat sealing technique is compared with traditional mechanical seal, have simple in structure, wear and tear little, sealing is high, pollution-free, the advantages such as long service life, in sealing industry, more and more by everybody, paid attention to, can be applicable to vacuum, high pressure, high temperature, be corrosive under gas or liquid environment, especially quiet, motive sealing place at running shaft has good sealability, in sealing industry, has wider application prospect.
At present, the magnetic fat sealing configuration of existing running shaft comprises permanent magnet, magnetic conductive pole piece and utmost point tooth mostly, wherein utmost point tooth operated by rotary motion is on running shaft, or on magnetic conductive pole piece, cylindrical at running shaft is provided with two or more magnetic conductive pole pieces, between two adjacent magnetic conductive pole pieces, be provided with permanent magnet, for whole sealing configuration provides magnetic field, magnetic fat, as magnetic sealant, can tightly be adsorbed between running shaft utmost point tooth and magnetic conductive pole piece or the gap of running shaft and magnetic conductive pole piece utmost point tooth under magnetic force effect.In order to guarantee the sealability of magnetic fat sealing configuration, require utmost point tooth to there is enough degree of depth and spacing, no matter being arranged on separately on solid of rotation is still arranged on separately on magnetic conductive pole piece, the degree of depth that utmost point tooth is larger all can have influence on its rigidity, larger spacing between utmost point tooth also makes whole sealing configuration length increase, and at some, to the limited specific occasion of installing space, also application cannot be installed.Make whole magnetic fat sealing configuration application area limited.
Model utility content
The purpose of this utility model is to overcome above defect, provides a kind of and is guaranteeing under the prerequisite of sealing, has shortened axial length, has improved a kind of magnetic fat sealing configuration of utmost point tooth rigidity.
To achieve these goals, the technical solution of the utility model is: a kind of magnetic fat sealing configuration, it comprises running shaft, support, magnetic conductive pole piece, permanent magnet, between running shaft and support inner circle, be provided with two or more magnetic conductive pole pieces, between two adjacent magnetic conductive pole pieces, be provided with permanent magnet, permanent magnet south poles is along the axial setting of running shaft, the internal surface of described magnetic conductive pole piece is provided with utmost point tooth I, on the corresponding running shaft of utmost point tooth I, be provided with utmost point tooth II, utmost point tooth I and utmost point tooth II are Spielpassung.
In order to take away in time heat, in magnetic conductive pole piece circumferential direction inside direction, be provided with cooling water channel.
In order to reduce the spike in magnetic field, described cooling water channel is being provided with arc transition near permanent magnet inner side.
Effect of the present utility model is, owing to being equipped with utmost point tooth on the running shaft in magnetic fat sealing configuration and magnetic conductive pole piece, effectively avoid being arranged in separately rotating shaft or be arranged in separately the shortcomings such as utmost point tooth on magnetic conductive pole piece is too high or wide, strengthened the rigidity of utmost point tooth, be conducive to shorten the axial length that running shaft coordinates with pole shoe, with the setting of the cooling water channel of arc transition, strengthened the sealing reliability of magnetic fat sealing configuration.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
With reference to accompanying drawing, a kind of magnetic fat sealing configuration, it comprises running shaft 1, magnetic conductive pole piece 4, supports end cap 5, permanent magnet 6, magnetic fat 8, described running shaft 1 is revolving part, between running shaft 1 and supports end cap 5 inner circles, be provided with two magnetic conductive pole pieces 4, described permanent magnet 6 is fixed between adjacent magnetic conductive pole piece 4, permanent magnet 6 south poles are axial along running shaft 1, described magnetic conductive pole piece 4 inside are provided with cooling water channel 7, cooling water channel 7 is adopting arc transition near permanent magnet 6 one sides, magnetic conductive pole piece 4 inner circles are provided with utmost point tooth I 3, on the corresponding running shaft 1 of utmost point tooth I 3, be provided with utmost point tooth II 2, utmost point tooth I 3 and utmost point tooth II 2 are Spielpassung.Magnetic fat 8 is as magnetic sealant, gap between utmost point tooth I 3 and utmost point tooth II 2 is tightly provided under the magnetic force effect providing at permanent magnet 6, permanent magnet 6, magnetic conductive pole piece 4, utmost point tooth I 3, utmost point tooth II 2 magnetic fat 8 and running shaft 1 form magnetic loop, realize sealed medium and the external world and separate, thereby reach the effect of sealing.
Claims (3)
1. a magnetic fat sealing configuration, it comprises running shaft, support, magnetic conductive pole piece, permanent magnet, between running shaft and support inner circle, be provided with two or more magnetic conductive pole pieces, between two adjacent magnetic conductive pole pieces, be provided with permanent magnet, permanent magnet south poles, along the axial setting of running shaft, is characterized in that, the internal surface of described magnetic conductive pole piece is provided with utmost point tooth I, on the corresponding running shaft of utmost point tooth I, be provided with utmost point tooth II, utmost point tooth I and utmost point tooth II are Spielpassung.
2. a kind of magnetic fat sealing configuration according to claim 1, is characterized in that, in described magnetic conductive pole piece circumferential direction inside direction, is provided with cooling water channel.
3. a kind of magnetic fat sealing configuration according to claim 2, is characterized in that, described cooling water channel is being provided with arc transition near permanent magnet inner side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420292148.2U CN203847710U (en) | 2014-06-04 | 2014-06-04 | Magnetic grease sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420292148.2U CN203847710U (en) | 2014-06-04 | 2014-06-04 | Magnetic grease sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847710U true CN203847710U (en) | 2014-09-24 |
Family
ID=51560731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420292148.2U Expired - Lifetime CN203847710U (en) | 2014-06-04 | 2014-06-04 | Magnetic grease sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203847710U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360987A (en) * | 2020-11-06 | 2021-02-12 | 西华大学 | Magnetic fluid sealing device for centrifugal compressor |
-
2014
- 2014-06-04 CN CN201420292148.2U patent/CN203847710U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360987A (en) * | 2020-11-06 | 2021-02-12 | 西华大学 | Magnetic fluid sealing device for centrifugal compressor |
| CN112360987B (en) * | 2020-11-06 | 2021-06-11 | 西华大学 | Magnetic fluid sealing device for centrifugal compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140924 |