JPS6220267U - - Google Patents

Info

Publication number
JPS6220267U
JPS6220267U JP11168885U JP11168885U JPS6220267U JP S6220267 U JPS6220267 U JP S6220267U JP 11168885 U JP11168885 U JP 11168885U JP 11168885 U JP11168885 U JP 11168885U JP S6220267 U JPS6220267 U JP S6220267U
Authority
JP
Japan
Prior art keywords
rotating shaft
magnetic pole
magnetic
flux density
atmosphere
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
Application number
JP11168885U
Other languages
Japanese (ja)
Other versions
JPH0223909Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1985111688U priority Critical patent/JPH0223909Y2/ja
Publication of JPS6220267U publication Critical patent/JPS6220267U/ja
Application granted granted Critical
Publication of JPH0223909Y2 publication Critical patent/JPH0223909Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の第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図は本考案の第二
実施例に係る磁性流体シール装置の要部縦断面図
、第３図は本考案の第三実施例に係る磁性流体シ
ール装置の要部縦断面図、第４図は従来の磁性流
体シール装置の要部縦断面図である。 符号の説明、１……回転軸、２……大気側磁極
、３……密封槽側磁極、２ａ，３ａ……微小間隙
、４……磁石、５……磁気回路、６……磁性流体
、７……テーパ面、Ｌ……密封槽側、Ｈ……大気
側、Ｓ……シール部。 FIG. 1 is a longitudinal cross-sectional view of a main part of a magnetic fluid seal device according to a first embodiment of the present invention, FIG. 2 is a longitudinal cross-sectional view of a main part of a magnetic fluid seal device according to a second embodiment of the present invention, and FIG. The figure is a vertical cross-sectional view of a main part of a magnetic fluid seal device according to a third embodiment of the present invention, and FIG. 4 is a vertical cross-sectional view of a main part of a conventional magnetic fluid seal device. Explanation of symbols, 1... Rotating shaft, 2... Atmospheric side magnetic pole, 3... Sealed tank side magnetic pole, 2a, 3a... Minute gap, 4... Magnet, 5... Magnetic circuit, 6... Magnetic fluid, 7... Tapered surface, L... Sealed tank side, H... Atmosphere side, S... Seal portion.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 微小間隙を介して、回転軸の外周に環状の大気
側磁極と密封槽側磁極とを軸方向に離隔させて配
置し、各磁極と回転軸との間で磁気回路を構成し
、上記大気側磁極と回転軸との間に形成される微
小間隙内に磁性流体を介在させてシール部を形成
すると共に、上記密封槽側磁極と回転軸との対向
面間の磁束密度を、上記大気側磁極と回転軸との
対向面間の磁束密度よりも大にしたことを特徴と
する磁性流体シール装置。 An annular atmosphere-side magnetic pole and a sealed tank-side magnetic pole are arranged axially apart from each other on the outer periphery of the rotating shaft with a minute gap between them, and a magnetic circuit is formed between each magnetic pole and the rotating shaft, and the above-mentioned atmosphere side A magnetic fluid is interposed in a minute gap formed between the magnetic pole and the rotating shaft to form a seal, and the magnetic flux density between the facing surfaces of the sealed tank side magnetic pole and the rotating shaft is adjusted to the atmosphere side magnetic pole. A magnetic fluid seal device characterized in that the magnetic flux density is greater than the magnetic flux density between the opposing surfaces of the rotating shaft and the rotating shaft.
JP1985111688U 1985-07-20 1985-07-20 Expired JPH0223909Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1985111688U JPH0223909Y2 (en) 1985-07-20 1985-07-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985111688U JPH0223909Y2 (en) 1985-07-20 1985-07-20

Publications (2)

Publication Number Publication Date
JPS6220267U true JPS6220267U (en) 1987-02-06
JPH0223909Y2 JPH0223909Y2 (en) 1990-06-29

Family

ID=30991840

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985111688U Expired JPH0223909Y2 (en) 1985-07-20 1985-07-20

Country Status (1)

Country Link
JP (1) JPH0223909Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63182367U (en) * 1987-05-18 1988-11-24

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5797963A (en) * 1980-12-05 1982-06-17 Ferrofluidics Corp Iron fluid rotary shaft seal device and method
JPS58225273A (en) * 1982-06-24 1983-12-27 フエロフルイデイクス・コ−ポレイシヨン Rotary sealing device using magnetic fluid

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5797963A (en) * 1980-12-05 1982-06-17 Ferrofluidics Corp Iron fluid rotary shaft seal device and method
JPS58225273A (en) * 1982-06-24 1983-12-27 フエロフルイデイクス・コ−ポレイシヨン Rotary sealing device using magnetic fluid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63182367U (en) * 1987-05-18 1988-11-24

Also Published As

Publication number Publication date
JPH0223909Y2 (en) 1990-06-29

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