JPS5530562A - Magnetic fluid feeder - Google Patents

Magnetic fluid feeder

Info

Publication number
JPS5530562A
JPS5530562A JP10367578A JP10367578A JPS5530562A JP S5530562 A JPS5530562 A JP S5530562A JP 10367578 A JP10367578 A JP 10367578A JP 10367578 A JP10367578 A JP 10367578A JP S5530562 A JPS5530562 A JP S5530562A
Authority
JP
Japan
Prior art keywords
magnetic fluid
shaft
yokes
porous ring
porous
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
JP10367578A
Other languages
Japanese (ja)
Inventor
Reizo Kaneko
Shigemitsu Oguchi
Kunio Hoshitani
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP10367578A priority Critical patent/JPS5530562A/en
Publication of JPS5530562A publication Critical patent/JPS5530562A/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

PURPOSE:To produce a magnetic fluid sealing effect without the special injection of a magnetic fluid, by providing a porous member between the facing sides of yokes and impregnating the member with the magnetic fluid. CONSTITUTION:The porous ring 6 is provided between the facing sides of the annular yokes 2. The magnetic fluid is impregnated in the porous ring 6. A closed magnetic circit consists of permanent magnets 1, the annular yokes 2 and a shaft 4. Since the density of leakage flux increases toward small gaps between the shaft 4 and the annular yokes 2, the magnetic fluid retained in the porous ring 6 oozes into the small gaps and fills it. The shaft is thus completely sealed up.
JP10367578A 1978-08-25 1978-08-25 Magnetic fluid feeder Pending JPS5530562A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10367578A JPS5530562A (en) 1978-08-25 1978-08-25 Magnetic fluid feeder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10367578A JPS5530562A (en) 1978-08-25 1978-08-25 Magnetic fluid feeder

Publications (1)

Publication Number Publication Date
JPS5530562A true JPS5530562A (en) 1980-03-04

Family

ID=14360359

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10367578A Pending JPS5530562A (en) 1978-08-25 1978-08-25 Magnetic fluid feeder

Country Status (1)

Country Link
JP (1) JPS5530562A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5554765A (en) * 1978-10-13 1980-04-22 Matsushita Electric Ind Co Ltd Magnetic seal device
JPS55139559A (en) * 1979-04-12 1980-10-31 Nok Corp Sealing-up device
JPS57208358A (en) * 1981-06-15 1982-12-21 Rigaku Denki Kk Shaft sealing device using magnetic fluid
JPS5861366A (en) * 1981-10-05 1983-04-12 Nippon Telegr & Teleph Corp <Ntt> Shaft seal device
JPS58131474A (en) * 1982-01-29 1983-08-05 Tohoku Metal Ind Ltd Sealing device
JPS63162181U (en) * 1987-04-14 1988-10-24
JPS63275858A (en) * 1987-04-30 1988-11-14 Nisshin Shisetsu Kogyo Kk Liquid seal device employing magnetic fluid
CN108825790A (en) * 2018-08-13 2018-11-16 广西科技大学 A kind of magnetic source increment type magnetic fluid sealing structure
JP7138387B1 (en) * 2021-04-26 2022-09-16 ツィンファ ユニバーシティ Magnetic fluid self-refilling type magnetic fluid sealing device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5554765A (en) * 1978-10-13 1980-04-22 Matsushita Electric Ind Co Ltd Magnetic seal device
JPS6234990B2 (en) * 1978-10-13 1987-07-30 Matsushita Electric Ind Co Ltd
JPS55139559A (en) * 1979-04-12 1980-10-31 Nok Corp Sealing-up device
JPS57208358A (en) * 1981-06-15 1982-12-21 Rigaku Denki Kk Shaft sealing device using magnetic fluid
JPS6143588B2 (en) * 1981-06-15 1986-09-29 Rigaku Denki Co Ltd
JPS5861366A (en) * 1981-10-05 1983-04-12 Nippon Telegr & Teleph Corp <Ntt> Shaft seal device
JPS58131474A (en) * 1982-01-29 1983-08-05 Tohoku Metal Ind Ltd Sealing device
JPH0361072B2 (en) * 1982-01-29 1991-09-18 Tokin Corp
JPS63162181U (en) * 1987-04-14 1988-10-24
JPS63275858A (en) * 1987-04-30 1988-11-14 Nisshin Shisetsu Kogyo Kk Liquid seal device employing magnetic fluid
CN108825790A (en) * 2018-08-13 2018-11-16 广西科技大学 A kind of magnetic source increment type magnetic fluid sealing structure
JP7138387B1 (en) * 2021-04-26 2022-09-16 ツィンファ ユニバーシティ Magnetic fluid self-refilling type magnetic fluid sealing device

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