JPS6431260U - - Google Patents
Info
- Publication number
- JPS6431260U JPS6431260U JP12641287U JP12641287U JPS6431260U JP S6431260 U JPS6431260 U JP S6431260U JP 12641287 U JP12641287 U JP 12641287U JP 12641287 U JP12641287 U JP 12641287U JP S6431260 U JPS6431260 U JP S6431260U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- housing
- magnet
- fluid
- rotating member
- 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.)
- Granted
Links
- 239000011553 magnetic fluid Substances 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims 2
- 230000004907 flux Effects 0.000 claims 1
- 239000000696 magnetic material Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 description 5
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Description
第１図は本考案の一実施例に係る磁性流体シー
ル装置の要部縦断面図、第２図は第１図のシール
装置の永久磁石およびポールピースと回転軸との
組付前の状態を示す要部縦断面図、第３図は第１
図のシール装置の磁性流体の注入状態を示してお
り、第３図イは回転軸の回転前の要部縦断面図、
第３図ロは回転軸が回転して磁性流体が移動する
状態を示す要部縦断面図、第４図は第１図のシー
ル装置のポールピースを永久磁石により一体に成
形した状態を示す要部縦断面図、第５図および第
６図は従来の磁性流体シール装置の要部縦断面図
、第７図は第６図の装置の磁性流体の注入作業状
態を示しており、第７図イは軸の組付前の要部縦
断面図、第７図ロは軸組付後の要部縦断面図であ
る。
符号の説明、１……回転軸（回転部材）、２…
…ハウジング、３，４……ポールピース（磁極）
、５……永久磁石（磁石）、６……貯溜溝（貯溜
凹所）、ｇ１，ｇ２……微小間隙、Ｆ……磁性流
体、Ｈ……磁気回路。
Fig. 1 is a vertical cross-sectional view of the main part of a magnetic fluid sealing device according to an embodiment of the present invention, and Fig. 2 shows the state of the sealing device of Fig. 1 before the permanent magnet and pole piece are assembled with the rotating shaft. Fig. 3 is a vertical cross-sectional view of the main parts shown in Fig. 1.
The figure shows the state in which the magnetic fluid is injected into the sealing device.
Figure 3B is a longitudinal sectional view of the main part showing the state in which the rotating shaft rotates and the magnetic fluid moves, and Figure 4 shows the main part showing the state in which the pole piece of the sealing device shown in Figure 1 is integrally molded with a permanent magnet. 5 and 6 are longitudinal sectional views of main parts of a conventional magnetic fluid sealing device, and FIG. 7 shows the device in FIG. A is a longitudinal sectional view of the main part before the shaft is assembled, and FIG. 7B is a longitudinal sectional view of the main part after the shaft is assembled. Explanation of symbols, 1...Rotating shaft (rotating member), 2...
...Housing, 3, 4...Pole piece (magnetic pole)
, 5...Permanent magnet (magnet), 6...Storage groove (storage recess), g1 , g2 ...Minute gap, F...Magnetic fluid, H...Magnetic circuit.
Claims (1)
れる回転部材の外周にハウジング内部を軸方向に
所定間隔でもつて区分する一対の磁極を設けると
共に、該磁極の内周側に磁石を介在させて該磁石
、磁極およびハウジングの間に磁気回路を形成し
、上記磁極の外周面とハウジング内周面との間に
形成した微小間隙内に磁性流体を磁気吸着させる
磁性流体シール装置において、 前記磁石の外周に、磁性流体を磁石内部を通る
磁束によつて拘束保持する貯溜凹所を設け、回転
部材の回転により生じる遠心力によつて上記貯溜
凹所内に保持した磁性流体を前記磁極とハウジン
グ間の微小間隙に移動せしめて成ることを特徴と
する磁性流体シール装置。[Claims for Utility Model Registration] A pair of magnetic poles are provided on the outer periphery of a rotating member rotatably supported on the inner periphery of a housing made of a magnetic material, and a pair of magnetic poles are provided on the outer periphery of the rotating member to divide the inside of the housing at a predetermined interval in the axial direction. A magnetic circuit in which a magnet is interposed on the circumferential side to form a magnetic circuit between the magnet, a magnetic pole, and a housing, and a magnetic fluid is magnetically attracted to a minute gap formed between the outer circumferential surface of the magnetic pole and the inner circumferential surface of the housing. In the fluid seal device, a storage recess is provided on the outer periphery of the magnet, and the magnetic fluid is restrained and held in the storage recess by the magnetic flux passing through the inside of the magnet, and the magnetic fluid held in the storage recess is generated by the centrifugal force generated by the rotation of the rotating member. A magnetic fluid seal device characterized in that the fluid is moved into a minute gap between the magnetic pole and the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12641287U JPH0356692Y2 (en) | 1987-08-21 | 1987-08-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12641287U JPH0356692Y2 (en) | 1987-08-21 | 1987-08-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6431260U true JPS6431260U (en) | 1989-02-27 |
| JPH0356692Y2 JPH0356692Y2 (en) | 1991-12-20 |
Family
ID=31377912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12641287U Expired JPH0356692Y2 (en) | 1987-08-21 | 1987-08-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0356692Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03102660U (en) * | 1990-02-07 | 1991-10-25 |
-
1987
- 1987-08-21 JP JP12641287U patent/JPH0356692Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03102660U (en) * | 1990-02-07 | 1991-10-25 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0356692Y2 (en) | 1991-12-20 |
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