CN1384298A - Magnetic fluid sealed transmission structure for reciprocating or rotating shaft - Google Patents
Magnetic fluid sealed transmission structure for reciprocating or rotating shaft Download PDFInfo
- Publication number
- CN1384298A CN1384298A CN 01114440 CN01114440A CN1384298A CN 1384298 A CN1384298 A CN 1384298A CN 01114440 CN01114440 CN 01114440 CN 01114440 A CN01114440 A CN 01114440A CN 1384298 A CN1384298 A CN 1384298A
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- magnetic
- magnetic liquid
- fluid sealing
- magnetic fluid
- transmission structure
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The magnetic fluid sealed transmission structure consists of transmission shaft, support casing and magnetic fluid sealing assembly and is characterized by that there are two magnetic liquid banks for storing and releasing magnetic liquid set separately at two ends of the sealed interval L of the magnetic fluid sealing assembly comprising permanent magnet, polar shoes and magnetic liquid. The magnetic liquid bank consists of skeleton oil seal adjacent to the sliding bearing, single-stage magnetic core element and throttle ring closing to the magnetic fluid sealing assembly.
Description
The present invention relates to a kind of reciprocal or while rotating drive shafts magnetic fluid sealed transmission structure, belong to magnet fluid sealing and device class.
Magnetic fluid sealing structure becomes the main separation structure of vacuum equipment transmission shaft sealing because its structural superiority replaces traditional contact-type rubber seal gradually.But, be known in all kinds of magnetic fluid shaft sealing drive mechanisms of generation at present, all belong to the sealing of single location, promptly be only applicable to a kind of sealing configuration of transmission shaft spin usefulness.If a certain shaft drive structure had both needed transmission shaft to do spin motion, need this axle to do the radial displacement campaign again, following this defective just appears in so existing this magnet fluid sealing transmission device in actual use: promptly transmission shaft do radial motion or the process of the compound motion that radially spins in, can make original attached magnetic liquid that is stored in the magnet fluid sealing assembly parts, along with the transmission shaft upper and lower displacement is expanded up and down along the axis body cylinder under the effect of axle surface adsorption power.Thereby not only cause the loss of magnetic liquid in the magnet fluid sealing assembly, and finally cause the magnetic fluid transmission seal to lose efficacy.
Purpose of the present invention: aim to provide a kind of new magnetic fluid sealing structure, refer in particular to a kind of energy and be suitable for the magnetic fluid sealed transmission structure that the reciprocating or to-and-fro motion of transmission shaft and spin motion are carried out simultaneously.Wish that it can effectively overcome the defective that existing magnet fluid sealing transmission device causes magnetic liquid easily to run off in doing radial displacement.
The purpose of foregoing invention is realized by following technical proposals.
This reciprocal or while rotating drive shafts magnetic fluid sealed transmission structure, form by transmission shaft (1), support housing (2) and magnet fluid sealing assembly (3), it is characterized in that respectively establishing one at the interval L of the magnet fluid sealing two ends of the magnetic fluid seal of being made up of permanent magnet (4), pole shoe (7) and magnetic liquid (3) has the magnetic liquid tank (5) of inhaling storage and discharging magnetic liquid function.
Described magnetic liquid tank (5) is made up of outside framework oil seal (10), single-stage magnetic core piece (9) and restrictor ring (8), and restrictor ring wherein (8) is located at magnet fluid sealing assembly (3) and is located, and outside framework oil seal (10) is then adjacent with sliding bearing (6).
Can put into adsorbing spongy object in the space that described magnetic liquid tank (5) is surrounded by outside framework oil seal (10).
This reciprocal or while rotating drive shafts magnetic fluid sealed transmission structure according to above conceptual design, because setting up of this magnetic liquid tank, make no matter transmission shaft is to do radially to-and-fro motion, still be used for radial displacement and the compound motion of axle rotation, the interior magnetic liquid of magnet fluid sealing element segment can not occur along the problem that transmission shaft radially overflows, ensure that the weighing apparatus of the magnetic liquid measure of sealing section is decided.Thereby can very guarantee that effectively the height of this magnet fluid sealing reliably reaches stability.
Accompanying drawing is a structural representation of the present invention.
Among the figure: 1. transmission shaft 2. support housings 3. magnet fluid sealing assemblies 4. permanent magnets 5. magnetic liquid tanks 6. sliding bearings 7. pole shoes 8. restrictor rings 9. single-stage magnetics 10. outside framework oil seal L. magnet fluid sealing intervals.
Further set forth the present invention and provide embodiment below in conjunction with accompanying drawing.
This reciprocal or while rotating drive shafts magnetic fluid sealed transmission structure as shown in the figure, form by transmission shaft (1), support housing (2) and magnet fluid sealing assembly (3), it is to improve at a sharp innovation of existing magnetic fluid sealed transmission structure now, mainly solve because transmission shaft (1) makes can will originally to be positioned in the radial displacement process magnetic liquid of the interval L of magnet fluid sealing can overflow up and down along the cylinder of transmission shaft (1), thereby cause the minimizing of the sealing magnetic liquid of the interval L of magnet fluid sealing, the problem that finally causes the sealability between seal area to lose efficacy.
Main technical schemes of the present invention is: the last bottom of L respectively is provided with a magnetic liquid tank (5) between the seal area of being made up of pole shoe (7), permanent magnet (4) and magnetic liquid.Supply with or hold back a storehouse of magnetic liquid as storage by this magnetic liquid tank (5), promptly be attracted to down the magnetic liquid of magnetic liquid tank (5) during to top offset and the magnetic liquid in the interval L of magnet fluid sealing can upwards move with the diameter of axle when transmission shaft (1), this at present the magnetic liquid in the magnetic liquid tank (5) added to L between seal area, though and the part magnetic liquid of L epimere is with from this interval between seal area, but in case after shifting out this interval, can be held back by restrictor ring of last magnetic liquid tank (5) (8) and single-stage magnetic part (9) immediately, be stored in the magnetic liquid tank (5); In case and transmission shaft (1) is trapped within the interior magnetic liquid of magnetic liquid tank (5) promptly can to get back to again between the seal area of the magnetic fluid assembly parts (3) in the L between seal area with rotatingshaft (1) radial motion when moving downwards; Simultaneously, the part magnetic liquid of L bottom to bottom offset by the transmission shaft band again between seal area at this moment, is descended magnetic current liquid storehouse (5) to hold back.Go round and begin again like this and ceaselessly move, can not cause seal failure because of the loss of magnetic liquid.All the time can guarantee that the interval L magnetic of magnet fluid sealing liquid is in the reliable sealing state.
In addition, the concrete structure of this magnetic liquid tank (5) also can slightly change, and as also can fill spongy adsorbate in the space that is surrounded by outside framework oil seal, as sponge or the porose plastic cement of foam-like, also can be the short fibre body that adsorption performance is arranged.
Claims (2)
1, a kind of reciprocal or while rotating drive shafts magnetic fluid sealed transmission structure, form by transmission shaft (1), support housing (2) and magnet fluid sealing assembly (3), it is characterized in that respectively establishing one at the interval L of the magnet fluid sealing two ends of the magnetic fluid seal of being made up of permanent magnet (4), pole shoe (7) and magnetic liquid (3) has the magnetic liquid tank (5) of inhaling storage and discharging magnetic liquid function.
2, a kind of according to claim 1 reciprocal or while rotating drive shafts magnetic fluid sealed transmission structure, it is characterized in that: magnetic liquid tank (5) is made up of outside framework oil seal (10), single-stage magnetic core piece (9) and restrictor ring (8), restrictor ring wherein (8) is located at magnet fluid sealing assembly (3) and is located, and outside framework oil seal (10) is then adjacent with sliding bearing (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01114440 CN1384298A (en) | 2001-04-30 | 2001-04-30 | Magnetic fluid sealed transmission structure for reciprocating or rotating shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01114440 CN1384298A (en) | 2001-04-30 | 2001-04-30 | Magnetic fluid sealed transmission structure for reciprocating or rotating shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1384298A true CN1384298A (en) | 2002-12-11 |
Family
ID=4661085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01114440 Pending CN1384298A (en) | 2001-04-30 | 2001-04-30 | Magnetic fluid sealed transmission structure for reciprocating or rotating shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1384298A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776150A (en) * | 2010-03-08 | 2010-07-14 | 北京交通大学 | Combined reciprocating sealing device of magnetic liquid, C-shaped slip ring and Y x type seal ring |
| CN101832843A (en) * | 2010-03-12 | 2010-09-15 | 北京交通大学 | Reciprocating sealing performance test bed for magnetic liquid sealing device |
| CN102345626A (en) * | 2010-07-28 | 2012-02-08 | 龚祺允 | Magnetic fluid sealing device |
| CN101047332B (en) * | 2006-03-28 | 2012-03-21 | 小林次雄 | Power transmission system |
| CN102588606A (en) * | 2012-03-14 | 2012-07-18 | 无锡康力电子有限公司 | Magnetic fluid sealing device for vacuum coating drive mechanism |
| CN107191488A (en) * | 2017-07-03 | 2017-09-22 | 燕山大学 | A kind of magnetic liquid dual suspension passive bearing journal bearing |
| CN112145698A (en) * | 2020-08-25 | 2020-12-29 | 清华大学 | Magnetic liquid sealing device with permanent magnet sheets and magnetic conductive sheets alternately distributed |
| CN112642377A (en) * | 2020-12-28 | 2021-04-13 | 牡丹江师范学院 | Dynamic sealing device for chemical reaction kettle |
| CN113090761A (en) * | 2021-04-20 | 2021-07-09 | 西华大学 | High-pressure reciprocating type magnetic fluid sealing device with collecting and supplementing system |
-
2001
- 2001-04-30 CN CN 01114440 patent/CN1384298A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101047332B (en) * | 2006-03-28 | 2012-03-21 | 小林次雄 | Power transmission system |
| CN101776150B (en) * | 2010-03-08 | 2013-05-08 | 北京交通大学 | Combined reciprocating sealing device of magnetic liquid, C-shaped slip ring and Y x type seal ring |
| CN101776150A (en) * | 2010-03-08 | 2010-07-14 | 北京交通大学 | Combined reciprocating sealing device of magnetic liquid, C-shaped slip ring and Y x type seal ring |
| CN101832843A (en) * | 2010-03-12 | 2010-09-15 | 北京交通大学 | Reciprocating sealing performance test bed for magnetic liquid sealing device |
| CN102345626B (en) * | 2010-07-28 | 2013-10-09 | 龚祺允 | Magnetic fluid sealing device |
| CN102345626A (en) * | 2010-07-28 | 2012-02-08 | 龚祺允 | Magnetic fluid sealing device |
| CN102588606A (en) * | 2012-03-14 | 2012-07-18 | 无锡康力电子有限公司 | Magnetic fluid sealing device for vacuum coating drive mechanism |
| CN107191488A (en) * | 2017-07-03 | 2017-09-22 | 燕山大学 | A kind of magnetic liquid dual suspension passive bearing journal bearing |
| CN112145698A (en) * | 2020-08-25 | 2020-12-29 | 清华大学 | Magnetic liquid sealing device with permanent magnet sheets and magnetic conductive sheets alternately distributed |
| WO2022041349A1 (en) * | 2020-08-25 | 2022-03-03 | 清华大学 | Magnetic liquid sealing apparatus having alternately distributed permanent magnet piece and magnetically permeable piece |
| CN112642377A (en) * | 2020-12-28 | 2021-04-13 | 牡丹江师范学院 | Dynamic sealing device for chemical reaction kettle |
| CN112642377B (en) * | 2020-12-28 | 2022-09-30 | 牡丹江师范学院 | Dynamic sealing device for chemical reaction kettle |
| CN113090761A (en) * | 2021-04-20 | 2021-07-09 | 西华大学 | High-pressure reciprocating type magnetic fluid sealing device with collecting and supplementing system |
| CN113090761B (en) * | 2021-04-20 | 2022-04-12 | 西华大学 | High-pressure reciprocating type magnetic fluid sealing device with collecting and supplementing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |