CN2389259Y - Spiral tooth magnetic fluid sealing mechanism - Google Patents
Spiral tooth magnetic fluid sealing mechanism Download PDFInfo
- Publication number
- CN2389259Y CN2389259Y CN 99244963 CN99244963U CN2389259Y CN 2389259 Y CN2389259 Y CN 2389259Y CN 99244963 CN99244963 CN 99244963 CN 99244963 U CN99244963 U CN 99244963U CN 2389259 Y CN2389259 Y CN 2389259Y
- Authority
- CN
- China
- Prior art keywords
- magnetic pole
- magnetic
- sealing mechanism
- rotating shaft
- helical tooth
- 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 - Fee Related
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model relates to a spiral tooth magnetic fluid sealing mechanism. A permanent magnet and a magnetic pole are arranged inside a non-magnetic shell body, and magnetic fluid are filled between the magnetic pole and a rotary shaft; the magnetic pole or the rotary shaft is provided with teeth wound on the magnetic pole or the rotary shaft, and the teeth which surround the magnetic pole or the rotary shaft are spiral teeth; one or two magnetic poles are provided with spiral teeth, or the rotary shaft is provided with a set of spiral teeth at the place corresponding to one magnetic pole; the set number of the helical teeth arranged on the rotary shaft is the same as the number of the magnetic poles. When sealing pressure is enlarged, one sealing mechanism is used, which prolongs the service life of the sealing mechanism, and meantime, relatively reduces the volume of the sealing mechanism.
Description
The utility model is an a kind of helical tooth magnet fluid sealing mechanism, and it is specially adapted to the operating mode of higher sealing load.
Prior art of the present utility model is B. P. GB2130662A, and this patent or has annular tooth on the inner round wall of magnetic pole on the cylindrical wall of rotating shaft or axle sleeve, and the plane at annular tooth place and the axis of rotating shaft are perpendicular.Under the operating mode of higher sealing load, must be connected in series a plurality of sealing mechanisms vertically, increased the volume of whole sealing device.
The purpose of this utility model is to adopt the structure of spiral-shaped teeth, with a sealing mechanism, prolongation sealing mechanism working life, reduces the volume of sealing mechanism relatively under the operating mode that sealing load increases.
The utility model is an a kind of helical tooth magnet fluid sealing mechanism, permanent magnet and magnetic pole are housed in non magnetic housing, between magnetic pole and rotating shaft, be filled with magnetic fluid, be provided with tooth on the magnetic pole or in the rotating shaft, it is characterized in that around the profile of tooth in magnetic pole or the rotating shaft be helical tooth around magnetic pole or rotating shaft.According to above-described magnet fluid sealing mechanism, it is characterized in that the magnetic pole that has helical tooth has 1 or 2, or corresponding position of magnetic pole place has one group of helical tooth in rotating shaft, the group number of the helical tooth of offering in rotating shaft equates with the number of magnetic pole.According to above-described magnet fluid sealing mechanism, it is characterized in that in the rotating shaft between two outermost position of magnetic poles about correspondence, all offering helical tooth.According to above-described device for sealing magnetic fluid, the shape that it is characterized in that the cross section of helical tooth is a triangle, or zigzag fashion, or trapezoidal, or rectangle.
Fig. 1 is the structural drawing of single magnetic pole helical tooth sealing mechanism;
Fig. 2 is the structural drawing of many magnetic poles helical tooth sealing mechanism;
Fig. 3 is the structural drawing of helical tooth sealing mechanism on single magnetic pole axle;
Fig. 4 is the structural drawing of helical tooth sealing mechanism on many magnetic poles axle.
The utility model has five embodiments.Above Fig. 1 to Fig. 4 is 4 embodiments wherein.As shown in Figure 1, the chamber is pressed for envelope in the left side of sealing mechanism, the right side leads to atmosphere, rotating shaft 1 is contained on the axis hole of non magnetic housing 5, one annular magnetic pole, 3 twisted rotary shafts 1 are arranged, be contained on the inwall of non magnetic housing 5, the magnet case 6 of one twisted rotary shaft 1 is housed in the end of non magnetic housing 5, permanent magnet 4 is between magnet case 6 and magnetic pole 3, be contained on the inwall of non magnetic housing 5, the outer end of magnetic pole 3 twisted rotary shaft 1 have helical tooth 3 ', helical tooth 3 ' Hand of spiral identical with the sense of rotation of rotating shaft 1, in non magnetic housing 5, be filled with magnetic fluid 2.Drive magnetic fluid 2 with respect to helical tooth 3 ' rotation during rotating shaft 1 rotation, make helical tooth 3 ' magnetic fluid 2 is produced pressure, this pressure superposes with the magnetic force of magnetic field generation, has improved the sealing load of magnetic fluid, thereby has prolonged the working life of sealing mechanism.
As shown in Figure 2, twisted rotary shaft 1 has the magnetic pole 3 of two certain intervals that are parallel to each other and have, and has helical tooth on two magnetic poles 3, and all the other structures are identical with Fig. 1.
As shown in Figure 3, structure and Fig. 1 of sealing mechanism are basic identical, difference be the position of corresponding magnetic pole in rotating shaft 1 offer one group of helical tooth 1 ', helical tooth is not offered in the end of magnetic pole 3.
As shown in Figure 4, sealing mechanism is on the basis of sealing mechanism shown in Figure 3, again in rotating shaft 1 position of corresponding two magnetic poles 3 offer respectively two groups of helical tooths 1 '.
The 5th embodiment's of the present utility model structure and sealing mechanism shown in Figure 4 are basic identical, difference be all offer on the position of the rotating shaft 1 between two outermost magnetic poles 3 about correspondence helical tooth 1 '.
Claims (4)
1. helical tooth magnet fluid sealing mechanism, permanent magnet (4) and magnetic pole (3) are housed in non magnetic housing (5), between magnetic pole (3) and rotating shaft (1), be filled with magnetic fluid (2), upward or in the rotating shaft (1) be provided with tooth around magnetic pole (3) or rotating shaft (1) at magnetic pole (3), it is characterized in that around the profile of tooth in magnetic pole (3) or the rotating shaft (1) be helical tooth.
2. magnet fluid sealing according to claim 1 mechanism, the magnetic pole (3) that it is characterized in that having helical tooth (3 ') has 1～9, or a corresponding magnetic pole (3) position has one group of helical tooth (1 ') in rotating shaft (1), and the group number of the helical tooth of offering in rotating shaft (1) (1 ') equates with the number of magnetic pole (3).
3. magnet fluid sealing according to claim 1 mechanism is characterized in that all offering helical tooth (1 ') in the rotating shaft (1) between two outermost magnetic poles (3) position about correspondence.
4. device for sealing magnetic fluid according to claim 1, the shape that it is characterized in that the cross section of helical tooth is a triangle, or zigzag fashion, or trapezoidal, or rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99244963 CN2389259Y (en) | 1999-09-24 | 1999-09-24 | Spiral tooth magnetic fluid sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99244963 CN2389259Y (en) | 1999-09-24 | 1999-09-24 | Spiral tooth magnetic fluid sealing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2389259Y true CN2389259Y (en) | 2000-07-26 |
Family
ID=34030956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99244963 Expired - Fee Related CN2389259Y (en) | 1999-09-24 | 1999-09-24 | Spiral tooth magnetic fluid sealing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2389259Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009026804A1 (en) * | 2007-08-31 | 2009-03-05 | Zhuzhou Vic Ferrofluidics Co., Ltd. | Dynamic sealing device for middle- or high-voltage power switch equipment |
| CN102252095A (en) * | 2010-05-18 | 2011-11-23 | 沈阳优力机电设备有限公司 | Seal method of magnetorheological fluid for elevator magnetorheological fluid brake and seal device |
| CN107830178A (en) * | 2017-12-13 | 2018-03-23 | 广西科技大学 | A kind of mixed type reciprocating sealing device |
-
1999
- 1999-09-24 CN CN 99244963 patent/CN2389259Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009026804A1 (en) * | 2007-08-31 | 2009-03-05 | Zhuzhou Vic Ferrofluidics Co., Ltd. | Dynamic sealing device for middle- or high-voltage power switch equipment |
| CN102252095A (en) * | 2010-05-18 | 2011-11-23 | 沈阳优力机电设备有限公司 | Seal method of magnetorheological fluid for elevator magnetorheological fluid brake and seal device |
| WO2011143980A1 (en) * | 2010-05-18 | 2011-11-24 | 沈阳优力机电设备有限公司 | Magnetorheological fluid sealing method and device for lift magnetorheological fluid arrester |
| CN102252095B (en) * | 2010-05-18 | 2013-11-13 | 沈阳优力机电设备有限公司 | Seal method of magnetorheological fluid for elevator magnetorheological fluid brake and seal device |
| CN107830178A (en) * | 2017-12-13 | 2018-03-23 | 广西科技大学 | A kind of mixed type reciprocating sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |