JPS5899558U - Magnetic fluid shaft seal - Google Patents

Magnetic fluid shaft seal

Info

Publication number
JPS5899558U
JPS5899558U JP1981195171U JP19517181U JPS5899558U JP S5899558 U JPS5899558 U JP S5899558U JP 1981195171 U JP1981195171 U JP 1981195171U JP 19517181 U JP19517181 U JP 19517181U JP S5899558 U JPS5899558 U JP S5899558U
Authority
JP
Japan
Prior art keywords
magnetic fluid
magnetic
pole
rotating shaft
fixed cylinder
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.)
Pending
Application number
JP1981195171U
Other languages
Japanese (ja)
Inventor
武富　荒
Original Assignee
富士電機株式会社
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 by 富士電機株式会社 filed Critical 富士電機株式会社
Priority to JP1981195171U priority Critical patent/JPS5899558U/en
Publication of JPS5899558U publication Critical patent/JPS5899558U/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/40—Sealings between relatively-moving surfaces by means of fluid
    • F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は従来の磁性流体軸シールの要部断面図、第２図
は本考案による磁性流体軸シールの要部断面図である。 １・・・ケーシング、２・・・磁石、３・・・ポールブ
ロック、４・・・磁性円盤、５・・・回転軸、６・・・
磁性流体、７・・・ポールプツシ２．８・・・固定筒、
９・・・ベローズ、４１・・・環状突起部、５１・・・
ベアリング。FIG. 1 is a sectional view of a main part of a conventional magnetic fluid shaft seal, and FIG. 2 is a sectional view of a main part of a magnetic fluid shaft seal according to the present invention. DESCRIPTION OF SYMBOLS 1... Casing, 2... Magnet, 3... Pole block, 4... Magnetic disk, 5... Rotating shaft, 6...
Magnetic fluid, 7... pole pusher 2.8... fixed tube,
9... Bellows, 41... Annular protrusion, 51...
bearing.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 回転軸に垂直に設けた磁性円盤の両面の環状梁起部と、
前記回転軸を取り囲む固定側のケーシングの内側に設け
た固定筒に前記磁性円盤を挾むように取付けた２個の環
状のポールブロックと、前記２個のポールブロック間に
円周状に配置した磁石とにより磁気回路を形成させ、前
記磁性円盤の環状突起部どく・ポールブロックとの間に
磁性流体を保持させ、前記固定筒の外周面と前記ケーシ
ング内面とのいずれかに相対する面と接しつつ前記回転
軸の方向に転勤可能にポールブツシュを取付け、かつ前
記固定筒の両端と前記ケーシングの内面とをベローズを
介して封着し、前記回転軸の軸方向の伸縮に応じてポー
ルブロック間も伸縮可能にしたことを特徴とする磁性流
体軸シール。An annular beam origin on both sides of a magnetic disk perpendicular to the rotation axis,
two annular pole blocks attached to a fixed cylinder provided inside a fixed side casing surrounding the rotating shaft so as to sandwich the magnetic disk; and magnets arranged circumferentially between the two pole blocks; A magnetic circuit is formed by forming a magnetic circuit, a magnetic fluid is held between the annular protrusion of the magnetic disk and the pole block, and the magnetic fluid is held in contact with a surface facing either the outer peripheral surface of the fixed cylinder or the inner surface of the casing. A pole bush is attached so that it can be moved in the direction of the rotating shaft, and both ends of the fixed cylinder and the inner surface of the casing are sealed via bellows, so that the space between the pole blocks can also expand and contract according to the axial expansion and contraction of the rotating shaft. A magnetic fluid shaft seal characterized by:
JP1981195171U 1981-12-26 1981-12-26 Magnetic fluid shaft seal Pending JPS5899558U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1981195171U JPS5899558U (en) 1981-12-26 1981-12-26 Magnetic fluid shaft seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1981195171U JPS5899558U (en) 1981-12-26 1981-12-26 Magnetic fluid shaft seal

Publications (1)

Publication Number Publication Date
JPS5899558U true JPS5899558U (en) 1983-07-06

Family

ID=30108454

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1981195171U Pending JPS5899558U (en) 1981-12-26 1981-12-26 Magnetic fluid shaft seal

Country Status (1)

Country Link
JP (1) JPS5899558U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012105301A1 (en) * 2011-02-03 2012-08-09 イーグル工業株式会社 Magnetic fluid seal
JP2015080369A (en) * 2013-10-18 2015-04-23 公益財団法人鉄道総合技術研究所 Seal structure in power storage apparatus
CN106015585A (en) * 2016-07-29 2016-10-12 广西科技大学 Floating ring-magnetofluid sealing device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012105301A1 (en) * 2011-02-03 2012-08-09 イーグル工業株式会社 Magnetic fluid seal
JPWO2012105301A1 (en) * 2011-02-03 2014-07-03 イーグル工業株式会社 Magnetic fluid seal
US9360118B2 (en) 2011-02-03 2016-06-07 Eagle Industry Co., Ltd. Magnetic fluid seal
JP2015080369A (en) * 2013-10-18 2015-04-23 公益財団法人鉄道総合技術研究所 Seal structure in power storage apparatus
CN106015585A (en) * 2016-07-29 2016-10-12 广西科技大学 Floating ring-magnetofluid sealing device
CN106015585B (en) * 2016-07-29 2018-02-06 广西科技大学 A kind of floating ring device for sealing magnetic fluid

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