JPS57208358A - Shaft sealing device using magnetic fluid - Google Patents

Shaft sealing device using magnetic fluid

Info

Publication number
JPS57208358A
JPS57208358A JP56090950A JP9095081A JPS57208358A JP S57208358 A JPS57208358 A JP S57208358A JP 56090950 A JP56090950 A JP 56090950A JP 9095081 A JP9095081 A JP 9095081A JP S57208358 A JPS57208358 A JP S57208358A
Authority
JP
Japan
Prior art keywords
annular
magnetic
magnets
magnetic pole
recessed groove
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
JP56090950A
Other languages
Japanese (ja)
Other versions
JPS6143588B2 (en
Inventor
Masatoki Kitada
Kimio Sato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RIGAKU DENKI KK
Rigaku Denki Co Ltd
Original Assignee
RIGAKU DENKI KK
Rigaku Denki Co Ltd
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 RIGAKU DENKI KK, Rigaku Denki Co Ltd filed Critical RIGAKU DENKI KK
Priority to JP56090950A priority Critical patent/JPS57208358A/en
Priority to DE19823222293 priority patent/DE3222293A1/en
Priority to FR8210391A priority patent/FR2507730B1/en
Priority to GB08217272A priority patent/GB2104165B/en
Publication of JPS57208358A publication Critical patent/JPS57208358A/en
Publication of JPS6143588B2 publication Critical patent/JPS6143588B2/ja
Granted 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

PURPOSE: To generate a strong magnetic field by utilizing repulsive force between each magnetic fluxes divided into two and increase the holding force of the magnetic fluid by a method wherein an annular recessed groove is formed on a magnetic pole piece interposed between two magnets to divide the magnetic flux into two parts.
CONSTITUTION: A plurality of annular permanent magnets 5 are arrayed on the axial line of a rotary shaft 2 coaxially so as to the same polarities of the magnets may oppose to each other. Annular magnetic pole pieces 6 are interposed between respective permanent magnets 5 coaxially, and magnetic pole pieces 7 having the same polarity are provided at the outside of the outermost magnets and abutted to O-rings 8. Each annular recessed groove 9 is formed on the inner side surface of respective magnetic pole pieces 6 and the annular protruded parts 10, 11, formed at both sides of the recessed groove, are faced opposing to the rotary shaft 2 through a minute gap between the tips of the protrusions and the shaft, and thereby holding the magnetic fluid 12 annularly in respective annular gaps.
COPYRIGHT: (C)1982,JPO&Japio
JP56090950A 1981-06-15 1981-06-15 Shaft sealing device using magnetic fluid Granted JPS57208358A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP56090950A JPS57208358A (en) 1981-06-15 1981-06-15 Shaft sealing device using magnetic fluid
DE19823222293 DE3222293A1 (en) 1981-06-15 1982-06-14 MAGNETIC LIQUID SEALING DEVICE
FR8210391A FR2507730B1 (en) 1981-06-15 1982-06-15 MAGNETIC FLUID SEALING DEVICE
GB08217272A GB2104165B (en) 1981-06-15 1982-06-15 Magnetic fluid sealing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56090950A JPS57208358A (en) 1981-06-15 1981-06-15 Shaft sealing device using magnetic fluid

Publications (2)

Publication Number Publication Date
JPS57208358A true JPS57208358A (en) 1982-12-21
JPS6143588B2 JPS6143588B2 (en) 1986-09-29

Family

ID=14012748

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56090950A Granted JPS57208358A (en) 1981-06-15 1981-06-15 Shaft sealing device using magnetic fluid

Country Status (4)

Country Link
JP (1) JPS57208358A (en)
DE (1) DE3222293A1 (en)
FR (1) FR2507730B1 (en)
GB (1) GB2104165B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103115152A (en) * 2013-01-30 2013-05-22 北京交通大学 Magnetic fluid and maze alternated type combined sealing

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61139468A (en) * 1984-12-12 1986-06-26 Nec Corp Data output system
GB2236363B (en) * 1986-06-24 1991-07-31 Papst Motoren Gmbh & Co Kg Magnetic fluid seal apparatus
CH676740A5 (en) * 1986-06-24 1991-02-28 Papst Motoren Gmbh & Co Kg
DE3622306A1 (en) * 1986-07-03 1988-01-07 Hommelwerke Gmbh Length measurement sensor, especially for sensing the surface of a workpiece
NL8902086A (en) * 1989-08-17 1991-03-18 Skf Ind Trading & Dev SEALING AND SLIDING BEARING ASSEMBLY WITH A MAGNETIC LIQUID.
JP3252090B2 (en) * 1996-07-10 2002-01-28 キヤノン株式会社 Developing device
CN103234049B (en) * 2013-04-12 2015-10-28 北京交通大学 Improve the sealing reliability of Split magnetic liquid sealing device and the method in life-span
CN108980361A (en) * 2018-08-13 2018-12-11 广西科技大学 A kind of strong magnetic-assemblying type magnetic fluid sealing structure
CN112648381B (en) * 2020-12-30 2021-12-07 清华大学 Magnetic liquid sealing device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US783881A (en) * 1904-12-09 1905-02-28 Samuel Mayper Hose-supporter.
GB783881A (en) * 1954-03-05 1957-10-02 Vickers Electrical Co Ltd Improvements relating to shaft and like seals
US3620584A (en) * 1970-05-25 1971-11-16 Ferrofluidics Corp Magnetic fluid seals
JPS519853A (en) * 1974-07-03 1976-01-26 Suwa Seikosha Kk EKISHOHAIKOYOSUMAKUNIOKERU BUNSHIHOKONO KET SUTEIHOHO
JPS5530562A (en) * 1978-08-25 1980-03-04 Nippon Telegr & Teleph Corp <Ntt> Magnetic fluid feeder

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU742657A1 (en) * 1978-03-28 1980-06-25 Предприятие П/Я Г-4213 Magnetic-liquid seal

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US783881A (en) * 1904-12-09 1905-02-28 Samuel Mayper Hose-supporter.
GB783881A (en) * 1954-03-05 1957-10-02 Vickers Electrical Co Ltd Improvements relating to shaft and like seals
US3620584A (en) * 1970-05-25 1971-11-16 Ferrofluidics Corp Magnetic fluid seals
JPS519853A (en) * 1974-07-03 1976-01-26 Suwa Seikosha Kk EKISHOHAIKOYOSUMAKUNIOKERU BUNSHIHOKONO KET SUTEIHOHO
JPS5530562A (en) * 1978-08-25 1980-03-04 Nippon Telegr & Teleph Corp <Ntt> Magnetic fluid feeder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103115152A (en) * 2013-01-30 2013-05-22 北京交通大学 Magnetic fluid and maze alternated type combined sealing
CN103115152B (en) * 2013-01-30 2015-05-06 北京交通大学 Magnetic fluid and maze alternated type combined sealing

Also Published As

Publication number Publication date
GB2104165A (en) 1983-03-02
GB2104165B (en) 1985-08-21
FR2507730B1 (en) 1985-12-13
FR2507730A1 (en) 1982-12-17
DE3222293C2 (en) 1987-12-10
DE3222293A1 (en) 1982-12-30
JPS6143588B2 (en) 1986-09-29

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