SU781469A1 - Shaft sealing and supporting assembly - Google Patents

Shaft sealing and supporting assembly Download PDF

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Publication number
SU781469A1
SU781469A1 SU792755848A SU2755848A SU781469A1 SU 781469 A1 SU781469 A1 SU 781469A1 SU 792755848 A SU792755848 A SU 792755848A SU 2755848 A SU2755848 A SU 2755848A SU 781469 A1 SU781469 A1 SU 781469A1
Authority
SU
USSR - Soviet Union
Prior art keywords
shaft sealing
supporting assembly
bearing
magnetic
fluid
Prior art date
Application number
SU792755848A
Other languages
Russian (ru)
Inventor
Анатолий Борисович Потапов
Александр Зосимович Аврамчук
Юрий Олегович Михалев
Дмитрий Васильевич Орлов
Михаил Иванович Трофименко
Original Assignee
Ивановский энергетический институт им.В.И.Ленина
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 Ивановский энергетический институт им.В.И.Ленина filed Critical Ивановский энергетический институт им.В.И.Ленина
Priority to SU792755848A priority Critical patent/SU781469A1/en
Application granted granted Critical
Publication of SU781469A1 publication Critical patent/SU781469A1/en

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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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/762—Sealings of ball or roller bearings by means of a fluid
    • F16C33/763—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap
    • F16C33/765—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap by a magnetic field

Landscapes

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

Description

1one

Изобретение относитс  к уплотнительной технике и может быть применено дл  герметизации подвижных элементов в приводах машин и механизмов. jThe invention relates to a sealing technique and can be applied to seal moving elements in drives of machines and mechanisms. j

Известен уплотнительно-опорный узел,содержащий подшипник и магнитножидкостное уплотнение, выполненное в виде магнита,размещенного между полюсными наконечниками, образугощими fQ с магнитом и валом замкнутую полость с магнитной жидкостью fljt Known sealing-bearing unit containing a bearing and a magnetic-fluid seal, made in the form of a magnet placed between pole pieces, forming a fQ with a magnet and a shaft, a closed cavity with a magnetic fluid fljt

Недостатком такого уплотнени   вл етс  то, что наружна  обойма подшипника  вл етс  частью магнитопровода, а также то, что значительна  часть магнитного потока, проход  через подшипник , вызывает его нагрев вихревыми токами, возникающими в нем, тем самым увеличива  потери на трение, что ограничивает надежность.The disadvantage of such a seal is that the outer bearing race is part of the magnetic circuit, and also the fact that a significant part of the magnetic flux, the passage through the bearing, causes it to be heated by eddy currents arising in it, thereby increasing friction losses, which limits the reliability .

Целью предлагаемого изобретени   вл етс  увеличение долговечности ..работы узла в услови х вакуума и агрессивных газовых сред.25The aim of the invention is to increase the durability of the work of the unit under vacuum and corrosive gas environments.

Указанна  цель достигаетс  посредством того, что подшипник установлен . в немагнитную втулку, размещенную в торцовой поверхности полюсного наконечника .30This goal is achieved by the fact that the bearing is installed. in a non-magnetic sleeve placed in the end surface of the pole tip .30

На чертеже изображен предлагаемый уплотнительно-опорный узел.The drawing shows the proposed sealing-bearing node.

Он включает корпус 1, в который установлен кольцевой посто нный магнит 2 и полюсные наконечники 3, образующие замкнутую полость 4 под маг .нитную жидкость 5, омывающую вал б и подшипник 7, впрессованный в немагнитную втулку 8, встроенную в торцовую поверхность полюсного наконечника , который закрыт запорной крышкой 9,  вл ющейс  защитным полюсрм.It includes a housing 1, in which an annular permanent magnet 2 is installed and pole pieces 3, forming a closed cavity 4 under a magnetic fluid 5, washing the shaft b and bearing 7, pressed into a nonmagnetic sleeve 8, embedded in the end surface of the pole tip, which closed by a locking lid 9, which is a protective pole.

При вращении вала магнитный поток Ф проходит по замкнутой магнитной цепи, образованной кольцевым магнитом , полюсными наконечниками, зазорами между полюсами и валом, заполненными ферромагнитной жидкостью, создава  градиентные магнитные силы, преп тствующие вытеканию жидкости из зазоров, чем обеспечиваетс  герметизаци  системы.When the shaft rotates, the magnetic flux F passes through a closed magnetic circuit formed by an annular magnet, pole pieces, gaps between the poles and the shaft filled with ferromagnetic fluid, creating gradient magnetic forces that prevent the fluid from flowing out of the gaps, thus sealing the system.

Смазка подшипника и защита его от воздействи  окружающей среды осуществл етс  магнитной жидкостью, удерживаемой градиентными силами, создаваемыми соответственно потокам Ф. и Ф, величина которых значительно меньше основного потока.The bearing is lubricated and protected from environmental influences by magnetic fluid held by gradient forces generated respectively by the fluxes F. and F., the magnitude of which is significantly less than the main flux.

Claims (1)

1. Авторское свидетельство СССР по за вке №2538417/25-08,кл.Р 16 J15/ 1977.1. USSR author's certificate in application number 2538417/25-08, cl. R 16 J15 / 1977.
SU792755848A 1979-04-10 1979-04-10 Shaft sealing and supporting assembly SU781469A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU792755848A SU781469A1 (en) 1979-04-10 1979-04-10 Shaft sealing and supporting assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU792755848A SU781469A1 (en) 1979-04-10 1979-04-10 Shaft sealing and supporting assembly

Publications (1)

Publication Number Publication Date
SU781469A1 true SU781469A1 (en) 1980-11-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU792755848A SU781469A1 (en) 1979-04-10 1979-04-10 Shaft sealing and supporting assembly

Country Status (1)

Country Link
SU (1) SU781469A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4407508A (en) * 1982-12-16 1983-10-04 Ferrofluidics Corporation Single-pole-piece ferrofluid seal apparatus and exclusion seal system
US4407518A (en) * 1983-01-05 1983-10-04 Ferrofluidics Corporation Nonbursting multiple-stage ferrofluid seal and system
US4772032A (en) * 1987-03-02 1988-09-20 Ferrofluidics Corporation Compact magnetic fluid low pressure seal
US4824122A (en) * 1987-03-02 1989-04-25 Ferrofluidics Corporation Compact magnetic fluid low pressure seal
US4842426A (en) * 1985-09-09 1989-06-27 Nippon Seiko Kabushiki Kaisha Bearing assembly
US20120314984A1 (en) * 2010-07-05 2012-12-13 Shigeki Honda Rolling bearing
US8920035B2 (en) 2010-07-05 2014-12-30 Eagle Industry Co., Ltd. Rolling bearing
US9022660B2 (en) 2010-07-05 2015-05-05 Eagle Industry Co., Ltd. Rolling bearing
EP3290730A1 (en) * 2016-08-30 2018-03-07 Globeride, Inc. Magnet fluid sealed bearing unit and drive motor having the bearing unit

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4407508A (en) * 1982-12-16 1983-10-04 Ferrofluidics Corporation Single-pole-piece ferrofluid seal apparatus and exclusion seal system
US4407518A (en) * 1983-01-05 1983-10-04 Ferrofluidics Corporation Nonbursting multiple-stage ferrofluid seal and system
US4842426A (en) * 1985-09-09 1989-06-27 Nippon Seiko Kabushiki Kaisha Bearing assembly
US4772032A (en) * 1987-03-02 1988-09-20 Ferrofluidics Corporation Compact magnetic fluid low pressure seal
US4824122A (en) * 1987-03-02 1989-04-25 Ferrofluidics Corporation Compact magnetic fluid low pressure seal
EP0353866A1 (en) * 1988-07-06 1990-02-07 Ferrofluidics Corporation Compact magnetic fluid low pressure seal
US20120314984A1 (en) * 2010-07-05 2012-12-13 Shigeki Honda Rolling bearing
US8585295B2 (en) * 2010-07-05 2013-11-19 Eagle Industry Co., Ltd. Rolling bearing
US8920035B2 (en) 2010-07-05 2014-12-30 Eagle Industry Co., Ltd. Rolling bearing
US9022660B2 (en) 2010-07-05 2015-05-05 Eagle Industry Co., Ltd. Rolling bearing
EP3290730A1 (en) * 2016-08-30 2018-03-07 Globeride, Inc. Magnet fluid sealed bearing unit and drive motor having the bearing unit
CN107795583A (en) * 2016-08-30 2018-03-13 古洛布莱株式会社 Bearing unit and drive motor with magnetic fluid seal
US10527099B2 (en) 2016-08-30 2020-01-07 Globeride, Inc. Magnet fluid sealed bearing unit and drive motor having the bearing unit

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