CA2640477A1 - Shaft seal - Google Patents

Shaft seal Download PDF

Info

Publication number
CA2640477A1
CA2640477A1 CA002640477A CA2640477A CA2640477A1 CA 2640477 A1 CA2640477 A1 CA 2640477A1 CA 002640477 A CA002640477 A CA 002640477A CA 2640477 A CA2640477 A CA 2640477A CA 2640477 A1 CA2640477 A1 CA 2640477A1
Authority
CA
Canada
Prior art keywords
sealing element
shaft seal
ring
seal according
shaft
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
CA002640477A
Other languages
French (fr)
Other versions
CA2640477C (en
Inventor
Bernhard Hofmayer
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.)
Sandvik Mining and Construction Supply GmbH
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2640477A1 publication Critical patent/CA2640477A1/en
Application granted granted Critical
Publication of CA2640477C publication Critical patent/CA2640477C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3268—Mounting of sealing rings
    • 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
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02—Bearings
    • F16C13/022—Bearings supporting a hollow roll mantle rotating with respect to a yoke or axle
    • 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
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • 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
    • F16C33/80—Labyrinth sealings
    • 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
    • F16J15/3436—Pressing means
    • F16J15/3456—Pressing means without external means for pressing the ring against the face, e.g. slip-ring with a resilient lip
    • 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
    • F16J15/44—Free-space packings
    • F16J15/447—Labyrinth packings
    • F16J15/4472—Labyrinth packings with axial path
    • F16J15/4474—Pre-assembled packings
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/58—Conveyor systems, e.g. rollers or bearings therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Sealing Devices (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)

Abstract

A shaft seal comprises an inner seal (6) at the shaft (2) comprising at least one ring (7,9,11) and a radial external seal at a roller body (1) comprising at least one ring (14,15,16) parallel to an inner ring. There is a projection (17,18,19) from at least one ring that contacts a ring of the other sealing element and wears at the beginning of rotation to produce a small ring gap between the projection and the other ring. An independent claim is also included for a roller for a conveyer, especially a belt or strip conveyer, comprising the above.

Claims (9)

1. A shaft seal comprising an inner sealing element (6) which is arranged on an axle shaft (2) which at least has one ring (7, 9, 11), and an outer sealing element which is arranged on a roller body (1) that at least has one ring (14, 15, 16) which is oriented essentially parallel to the at least one ring (7, 9, 11) of the inner sealing element (6), and which is characterized by a ring (14, 15, 16) of one of the two sealing elements (13) provided with an annular projection (17, 18, 19) facing a ring (7, 9, 11) of the other sealing element (6).
Said projection being in contact with the ring (7, 9, 11) of the other sealing element (6) during the assembly of the shaft seal and being ground, once the axle shaft (2) and the roller body (1) has started to rotate, until a narrow annular gap between the projection (17, 18, 19) and the ring (7, 9, 11) of the other sealing element (6) is formed.
2. A shaft seal according to claim 1, characterized by the tapered shape of the projection (17, 18, 19).
3. A shaft seal according to claim 1 or claim 2, characterized in that the axle shaft (2) functions as stator and the roller body (1) functions as rotor.
4. A shaft seal according to one of the aforesaid claims, characterized by a sealing land in which one of the two opposing boundary walls is arranged to face the inner sealing element (6) and the other one to face the outer sealing element (13).
5. A shaft seal according to one of the aforesaid claims, characterized in that the rings (7, 9, 11) of the inner sealing element (6) and the rings (14, 15, 16) of the outer sealing element (13) are arranged alternately in axial direction along the axle shaft.
6. A shaft seal according to one of the aforesaid claims, characterized in that in case of multiple provided projections said projections are arranged only on one of the two sealing elements (6, 13).
7. A shaft seal according to one of the aforesaid claims, characterized in that the inner sealing element (6) and/or the outer sealing element (13) is provided as one-pieced unit.
8. A shaft seal according to one of the aforesaid claims, characterized by being applied for a conveyor roller in particular for a band or belt conveyor.
9. A conveyor roller, in particular a belt or band conveyor comprising a hollow cylindrical roller body (1), and at least having an axle shaft (2) mounted in two bearings (4) arranged with a shaft seal for each of the bearings (4), characterized by providing a shaft seal according to claim 1 to claim 8.
CA2640477A 2006-05-22 2007-05-11 Shaft seal Expired - Fee Related CA2640477C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006024154A DE102006024154B3 (en) 2006-05-22 2006-05-22 Shaft seal and roller for a conveyer has inner and outer seals with rings and a projection at one ring that wears on an opposite ring on rotation to reduce the gap
DE102006024154.1 2006-05-22
PCT/DE2007/000875 WO2007134576A1 (en) 2006-05-22 2007-05-11 Shaft seal

Publications (2)

Publication Number Publication Date
CA2640477A1 true CA2640477A1 (en) 2007-11-29
CA2640477C CA2640477C (en) 2012-07-03

Family

ID=38190270

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2640477A Expired - Fee Related CA2640477C (en) 2006-05-22 2007-05-11 Shaft seal

Country Status (12)

Country Link
EP (1) EP1893877B1 (en)
AT (1) ATE515643T1 (en)
BR (1) BRPI0706298A2 (en)
CA (1) CA2640477C (en)
DE (1) DE102006024154B3 (en)
EA (1) EA016414B1 (en)
ES (1) ES2369192T3 (en)
PL (1) PL1893877T3 (en)
RS (1) RS52005B (en)
UA (1) UA92799C2 (en)
WO (1) WO2007134576A1 (en)
ZA (1) ZA200806834B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104315150A (en) * 2014-10-16 2015-01-28 武汉新置密封科技有限公司 Rotary lip labyrinth sealing device

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8844935B2 (en) * 2011-04-13 2014-09-30 Gamesa Innovation & Technology, S.L. Seal arrangement
RU2557586C1 (en) * 2014-01-21 2015-07-27 Государственное предприятие "Украинский научно-технический центр металлургической промышленности "Энергосталь" (ГП "УкрНТЦ "Энергосталь") Gas scrubber
FI127009B (en) * 2014-03-27 2017-09-15 Andritz Oy Tilt filter and procedure in connection with the tint filter
CN104329467B (en) * 2014-10-16 2017-01-18 武汉新置密封科技有限公司 S-shaped multiple labyrinth seal device
US10569962B2 (en) 2016-10-03 2020-02-25 Superior Industries, Inc. Conveyor idler seal apparatus, systems, and methods
CN109505986B (en) * 2018-12-28 2024-04-09 张家港市兰航机械有限公司 Sealing structure of side press roller

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1143068B (en) * 1961-03-06 1963-01-31 Hirth Motoren K G Sealing of rotating parts
FR1359386A (en) * 1963-03-29 1964-04-24 Rotating seal
CH508192A (en) 1969-05-08 1971-05-31 Oerlikon Buehrle Ag Tank turret with at least one automatic firearm stored outside the tank turret
DE2163734C3 (en) * 1971-12-22 1974-10-31 J.M. Voith Gmbh, 7920 Heidenheim Labyrinth seal for sealing two components that can be rotated relative to one another
US4452497A (en) * 1982-09-20 1984-06-05 Rockwell International Corporation Grease seal for bearing arrangement
CZ278254B6 (en) * 1992-04-01 1993-10-13 Bouchal Milan Belt conveyor roller
BR9805787C1 (en) 1998-12-21 2004-07-13 Svedala Ltda Conveyor Belt Roll
DE10047307A1 (en) * 2000-09-25 2002-08-01 Alstom Switzerland Ltd sealing arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104315150A (en) * 2014-10-16 2015-01-28 武汉新置密封科技有限公司 Rotary lip labyrinth sealing device

Also Published As

Publication number Publication date
WO2007134576A1 (en) 2007-11-29
ZA200806834B (en) 2009-12-30
CA2640477C (en) 2012-07-03
PL1893877T3 (en) 2011-12-30
RS52005B (en) 2012-04-30
BRPI0706298A2 (en) 2011-03-22
EA016414B1 (en) 2012-04-30
UA92799C2 (en) 2010-12-10
DE102006024154B3 (en) 2007-07-19
ATE515643T1 (en) 2011-07-15
EP1893877B1 (en) 2011-07-06
ES2369192T3 (en) 2011-11-28
EA200802249A1 (en) 2009-06-30
EP1893877A1 (en) 2008-03-05

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Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20140513