CN2612840Y - Detachable magnetic fluid sealing apparatus - Google Patents
Detachable magnetic fluid sealing apparatus Download PDFInfo
- Publication number
- CN2612840Y CN2612840Y CN 03211347 CN03211347U CN2612840Y CN 2612840 Y CN2612840 Y CN 2612840Y CN 03211347 CN03211347 CN 03211347 CN 03211347 U CN03211347 U CN 03211347U CN 2612840 Y CN2612840 Y CN 2612840Y
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- CN
- China
- Prior art keywords
- magnetic fluid
- rotation shaft
- magnetic
- magnetic pole
- utility
- 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
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model relates to a split type magnetic fluid sealing device, which comprises a rotation shaft, a permanent magnet, a magnetic pole and a magnetic fluid, wherein the permanent magnet parallel to the rotation shaft is symmetrically and separately arranged on the two sides of the rotation shaft, the magnetic pole vertical to the rotation shaft is arranged on the two sides of the permanent magnet, a seal gap between the magnetic pole and the rotation shaft is filled with the magnetic fluid, the end of the magnetic pole vertical to the rotation shaft is of a cusp shape. The utility model has the advantages of simple structure, convenient installment, excellent sealing effect and the like, because the magnetic fluid is liquid, other mechanical components in the equipment is not wore, technical requirements in beating, eccentricity and roughness of the rotation shaft are low, and simultaneously the magnetic fluid has lubricating effect. The utility model has no special requirements and pollution to environment, and is capable of being used in dustproof, pressure difference and vacuum seal, and is suitable for oil fender seal of a steam turbine, a generator, an exciter and various auxiliaries in a power industry department. The utility model is an ideal shaft sealing device.
Description
Technical field the utility model relates to a kind of seal arrangement, especially a kind of split type device for sealing magnetic fluid that is used for the axial seal of machinery inner rotation axle.
Background technique is present, and the rigid seal structure is adopted in the inner axial seal of machinery mostly, so equipment Sealing in operation process easily weares and teares, makes the gap between rotatingshaft and the Sealing become big, phenomenons such as leakage and seepage occur, influences sealing effect.
The summary of the invention the purpose of this utility model provides the split type preferably device for sealing magnetic fluid of a kind of sealing effect.
For achieving the above object, the split type device for sealing magnetic fluid of the utility model comprises running shaft, permanent magnet, magnetic pole, magnetic fluid, be provided with the permanent magnet parallel with rotatingshaft with being positioned at rotatingshaft bilateral symmetry, split, the both sides of permanent magnet are provided with the magnetic pole vertical with rotatingshaft, are filled with magnetic fluid in the seal clearance between magnetic pole and the rotatingshaft.
After adopting said structure, because the magnetic pole of the magnetic line of force through the permanent magnet both sides that permanent magnet produces forms closed magnetic force loop, the magnetic fluid that is arranged in the seal clearance between magnetic pole and the rotatingshaft is applied magnetic force, make magnetic fluid be positioned at the seal ring structure that forms liquid in the seal clearance, play the effect revealing, seal of preventing.Said structure adopts radial symmetric to divide body structure, thus simple in structure, be convenient to Installation and Debugging.
As further improvement of the utility model, the magnetic pole end perpendicular with described rotatingshaft is tip-angled shape.Adopt this structure can increase the magnetic intensity and the magnetic field gradient of magnetic pole end, thereby strengthen magnetic force magnetic fluid; Enhancing is to the sealing of running shaft.
The utility model has the advantages that: simple in structure, easy for installation, all have sealability at low speed with at a high speed, be determined at by experiment under the standard temperature and pressure helium is carried out the seal leakage amount less than 10-11 standard ml/s, so good sealing effect; Because magnetic fluid is that liquid does not have wearing and tearing to other mechanical parts, so long service life is lower to technical requirementss such as the beating of rotatingshaft, off-centre and roughness; Magnetic fluid has lubricated effect again simultaneously.
Below in conjunction with drawings and Examples the utility model is described in further detail.
Description of drawings Fig. 1 is the structural representation of the split type device for sealing magnetic fluid of the utility model.
Fig. 2 is the another kind of structural representation of the split type device for sealing magnetic fluid of the utility model.
Fig. 3 is the multi-stage sealed structural representation of the split type device for sealing magnetic fluid of the utility model.
Embodiment as shown in Figure 1.The split type device for sealing magnetic fluid of the utility model comprises rotatingshaft 1, permanent magnet 2, magnetic pole 4, magnetic fluid 3, wherein be positioned at rotatingshaft 1 bilateral symmetry, be provided with the permanent magnet 2 parallel to split with rotatingshaft 1, the both sides of permanent magnet 2 are provided with the magnetic pole 4 vertical with rotatingshaft 1, are filled with magnetic fluid 3 in the seal clearance between magnetic pole 4 and the rotatingshaft 1.The magnetic pole end perpendicular with described rotatingshaft is tip-angled shape.Above-mentioned permanent magnet 2 is the very strong permanent-magnet materials such as NdFeB rear-earth of magnetic, and rotatingshaft 1, magnetic pole 4, magnetic fluid 3 are the good soft magnetic material of magnetic property; Characteristics such as the magnetic fluid that plays seal action adopts fat or refined oil as base fluid, and it has, and operating range is big, saturated vapor forces down, good stability, magnetization intensity height, viscosity are suitable.Can select different magnetic fluids for use according to the difference that is closed medium in actual the use.
When rotatingshaft 1 is nonmagnetic substance, adopt and to show structure as Fig. 2, the magnetic line of force forms closed magnetic field through permanent magnet and both sides magnetic pole, thereby magnetic fluid is remained in the gap between magnetic pole formation liquid seal ring in seal clearance.
Can certainly be according to concrete job requirement, with a plurality of single-stage sealing group synthetic multi-stage sealed (showing) or multistage combination seal as Fig. 3.
The utlity model has the characteristics such as simple in structure, easy for installation, good sealing effect; Because magnetic fluid is Liquid does not have wearing and tearing to other mechanical parts in the equipment, to the technology of the beating of turning cylinder, off-centre and roughness Require lower; Magnetic fluid has again lubricated effect simultaneously. It is pollution-free that environment is not had specific (special) requirements, can be used for Dustproof, pressure reduction and vacuum seal; The steam turbine, generator, the exciter that are applicable to power industry department reach each Plant the oil catch sealing of subsidiary engine.
Claims (2)
1, a kind of split type device for sealing magnetic fluid, comprise rotatingshaft (1), permanent magnet (2), magnetic pole (4), magnetic fluid (3), it is characterized in that: be positioned at rotatingshaft (1) bilateral symmetry, be provided with the permanent magnet (2) parallel to split with rotatingshaft (1), the both sides of permanent magnet (2) are provided with the magnetic pole (4) vertical with rotatingshaft (1), are filled with magnetic fluid (3) in the seal clearance between magnetic pole (4) and the rotatingshaft (1).
2, split type device for sealing magnetic fluid according to claim 1 is characterized in that: magnetic pole (4) end perpendicular with described rotatingshaft (1) is tip-angled shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03211347 CN2612840Y (en) | 2003-02-13 | 2003-02-13 | Detachable magnetic fluid sealing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03211347 CN2612840Y (en) | 2003-02-13 | 2003-02-13 | Detachable magnetic fluid sealing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2612840Y true CN2612840Y (en) | 2004-04-21 |
Family
ID=34158936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03211347 Expired - Lifetime CN2612840Y (en) | 2003-02-13 | 2003-02-13 | Detachable magnetic fluid sealing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2612840Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588607A (en) * | 2012-04-06 | 2012-07-18 | 哈尔滨工业大学 | Magnetic fluid single-pole sealing device based on tooth space structure |
| CN107110372A (en) * | 2014-12-26 | 2017-08-29 | 索马龙株式会社 | Containment member and seal construction |
| CN108506495A (en) * | 2018-05-30 | 2018-09-07 | 北京化工大学 | Sealing ring, seal assembly and mechanical equipment |
| CN108980361A (en) * | 2018-08-13 | 2018-12-11 | 广西科技大学 | A kind of strong magnetic-assemblying type magnetic fluid sealing structure |
| CN110266177A (en) * | 2019-06-22 | 2019-09-20 | 石愈超 | A kind of magnetic shaft coupling |
-
2003
- 2003-02-13 CN CN 03211347 patent/CN2612840Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588607A (en) * | 2012-04-06 | 2012-07-18 | 哈尔滨工业大学 | Magnetic fluid single-pole sealing device based on tooth space structure |
| CN107110372A (en) * | 2014-12-26 | 2017-08-29 | 索马龙株式会社 | Containment member and seal construction |
| CN107110372B (en) * | 2014-12-26 | 2019-12-27 | 索马龙株式会社 | Sealing member and sealing structure |
| CN108506495A (en) * | 2018-05-30 | 2018-09-07 | 北京化工大学 | Sealing ring, seal assembly and mechanical equipment |
| CN108980361A (en) * | 2018-08-13 | 2018-12-11 | 广西科技大学 | A kind of strong magnetic-assemblying type magnetic fluid sealing structure |
| CN110266177A (en) * | 2019-06-22 | 2019-09-20 | 石愈超 | A kind of magnetic shaft coupling |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130218 Granted publication date: 20040421 |
|
| DD01 | Delivery of document by public notice |
Addressee: Tan Xu Document name: Notification of Expiration of Patent Right Duration |