GB1550920A - Shaft seals - Google Patents

Shaft seals

Info

Publication number
GB1550920A
GB1550920A GB25368/76A GB2536876A GB1550920A GB 1550920 A GB1550920 A GB 1550920A GB 25368/76 A GB25368/76 A GB 25368/76A GB 2536876 A GB2536876 A GB 2536876A GB 1550920 A GB1550920 A GB 1550920A
Authority
GB
United Kingdom
Prior art keywords
grooves
sliding surface
ground grooves
oil
mating ring
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.)
Expired
Application number
GB25368/76A
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.)
Danfoss AS
Original Assignee
Danfoss AS
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 Danfoss AS filed Critical Danfoss AS
Publication of GB1550920A publication Critical patent/GB1550920A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/106—Shaft sealings especially adapted for liquid pumps
    • 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
    • F16C33/74—Sealings of sliding-contact bearings
    • 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
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
    • F16J15/3408—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface
    • F16J15/3412—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with cavities
    • 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
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
    • F16J15/3408—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface
    • F16J15/3424—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with microcavities

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Sealing (AREA)

Abstract

The mechanical seal has a revolving slip ring made of carbon which is pressed against a fixed mating ring (2) made of metal by a spring. The sliding surface of the mating ring is provided with approximately straight ground grooves (5) with a peak-to-valley height of 0.1-0.8 mu m which extend in the same direction and at the same angle to the radial direction from the inner edge (3) to the outer edge (4) of the sliding surface and, as measured at the circumcircle, has a flatness deviation of less than 6 mu m. In operation, the ground grooves have the effect of pumping back leakage oil. The loss of oil through leaks when stationary is insignificant. The formation of the grooves as ground grooves makes the production process simple and economical. <IMAGE>
GB25368/76A 1976-02-06 1976-06-18 Shaft seals Expired GB1550920A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK48376AA DK136626B (en) 1976-02-06 1976-02-06 Retaining ring for sliding seals.

Publications (1)

Publication Number Publication Date
GB1550920A true GB1550920A (en) 1979-08-22

Family

ID=8094065

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25368/76A Expired GB1550920A (en) 1976-02-06 1976-06-18 Shaft seals

Country Status (7)

Country Link
JP (1) JPS605822B2 (en)
CH (1) CH616729A5 (en)
DK (1) DK136626B (en)
FR (1) FR2340471A1 (en)
GB (1) GB1550920A (en)
IT (1) IT1071202B (en)
SE (1) SE428826B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2572162A (en) * 2018-03-20 2019-09-25 Cummins Ltd Bearing assembly for a turbomachine, and baffle element for the turbomachine
EP3550187A1 (en) * 2018-04-05 2019-10-09 Carl Freudenberg KG Slip ring with microstructure and method for producing the same

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5899561A (en) * 1981-12-04 1983-06-13 Eagle Ind Co Ltd Method of forming slide surface of seat ring or seal ring in mechanical seal
JPS58127256U (en) * 1982-02-22 1983-08-29 株式会社デンソー Shaft sealing device
FR2538423A1 (en) * 1982-12-27 1984-06-29 Imbert Ste Artisanale Michel Apparatus of the type called "embroidery frame", method for employing it and applications.
JPS6072234U (en) * 1983-10-24 1985-05-21 川上　武 laminated fabric
DE3435643A1 (en) * 1984-09-28 1986-04-10 Hoechst Ag, 6230 Frankfurt LAMINATE
JPS63121530U (en) * 1987-01-30 1988-08-08

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1058142A (en) * 1952-06-09 1954-03-15 Air Equipement Improvements to rotary seals
FR1599308A (en) * 1968-06-08 1970-07-15
US3586340A (en) * 1969-06-13 1971-06-22 Timken Co Wear surface and seal construction

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2572162A (en) * 2018-03-20 2019-09-25 Cummins Ltd Bearing assembly for a turbomachine, and baffle element for the turbomachine
GB2572162B (en) * 2018-03-20 2022-11-09 Cummins Ltd Bearing assembly for a turbomachine, and baffle element for the turbomachine
EP3550187A1 (en) * 2018-04-05 2019-10-09 Carl Freudenberg KG Slip ring with microstructure and method for producing the same
EP3550186A1 (en) * 2018-04-05 2019-10-09 Carl Freudenberg KG Slip ring with microstructure and method for producing the same

Also Published As

Publication number Publication date
CH616729A5 (en) 1980-04-15
DK136626C (en) 1978-04-10
DK136626B (en) 1977-10-31
SE428826B (en) 1983-07-25
DK48376A (en) 1977-08-07
SE7606939L (en) 1977-08-07
JPS605822B2 (en) 1985-02-14
FR2340471A1 (en) 1977-09-02
FR2340471B1 (en) 1982-04-16
IT1071202B (en) 1985-04-02
JPS5297059A (en) 1977-08-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee