SE9400424D0 - Method and apparatus for sharpening the surface of the grindstone in a wood grinder - Google Patents

Method and apparatus for sharpening the surface of the grindstone in a wood grinder

Info

Publication number
SE9400424D0
SE9400424D0 SE9400424A SE9400424A SE9400424D0 SE 9400424 D0 SE9400424 D0 SE 9400424D0 SE 9400424 A SE9400424 A SE 9400424A SE 9400424 A SE9400424 A SE 9400424A SE 9400424 D0 SE9400424 D0 SE 9400424D0
Authority
SE
Sweden
Prior art keywords
grindstone
sharpening
nozzle
wood grinder
high pressure
Prior art date
Application number
SE9400424A
Other languages
Swedish (sv)
Other versions
SE503135C2 (en
SE9400424L (en
Inventor
Jukka Laehteenmaeki
Seppo Blomqvist
Juhani Valli
Original Assignee
Tampella Oy Valmet
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 Tampella Oy Valmet filed Critical Tampella Oy Valmet
Publication of SE9400424D0 publication Critical patent/SE9400424D0/en
Publication of SE9400424L publication Critical patent/SE9400424L/en
Publication of SE503135C2 publication Critical patent/SE503135C2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/14—Disintegrating in mills
    • D21B1/28—Dressers for mill stones, combined with the mill

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Abstract

A method and apparatus for sharpening the surface of a grindstone (1) in a pulp grinder (8). In the process a water jet (2) removing from the surface of the grindstone (1) bonding material found between abrasive grains is directed to the surface of the grindstone (1) at a high feed pressure. The apparatus comprises a nozzle (3) and a high pressure pump (6) feeding high pressure water through a nozzle (3). The nozzle (3) is connected to a transfer apparatus (4) to move it in the axial direction of the grindstone (1) while the grindstone (1) is being rotated. <IMAGE>
SE9400424A 1991-08-09 1994-02-09 Method and apparatus for sharpening the surface of the grindstone in a wood grinder SE503135C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI913803A FI88938C (en) 1991-08-09 1991-08-09 Method and apparatus for sharpening the surface of the wood grinder's lipstick
PCT/FI1992/000224 WO1993002836A1 (en) 1991-08-09 1992-08-03 Method and apparatus for sharpening the surface of a grindstone in a pulp grinder

Publications (3)

Publication Number Publication Date
SE9400424D0 true SE9400424D0 (en) 1994-02-09
SE9400424L SE9400424L (en) 1994-02-09
SE503135C2 SE503135C2 (en) 1996-04-01

Family

ID=8532972

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9400424A SE503135C2 (en) 1991-08-09 1994-02-09 Method and apparatus for sharpening the surface of the grindstone in a wood grinder

Country Status (7)

Country Link
JP (1) JPH07500775A (en)
AU (1) AU2368592A (en)
DE (1) DE4292499T1 (en)
FI (1) FI88938C (en)
GB (1) GB2274079B (en)
SE (1) SE503135C2 (en)
WO (1) WO1993002836A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI105459B (en) * 1995-07-11 2000-08-31 Valmet Paperikoneet Oy Method and apparatus for sharpening the surface of a grinding stone in a wood grinding machine
FI104987B (en) * 1999-05-26 2000-05-15 Tom Forsman Method for controlling a process for producing ground pulp
DE10322991A1 (en) * 2003-05-21 2004-12-16 Erwin Junker Maschinenfabrik Gmbh Work-piece grinding method e.g. using rotary grinding disc, involves angularly displacing spraying medium to contact point on grinding surface relative to axis of rotation of grinding disc
EP1896651B1 (en) * 2005-06-03 2008-12-03 M-real Oyj Method and apparatus for mechanical defibration of wood
CN110293482B (en) * 2019-07-05 2020-05-15 湖南科技大学 Method for dressing circular arc diamond grinding wheel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3747276A (en) * 1971-05-07 1973-07-24 Christensen Diamond Prod Co Method and apparatus for contouring and sharpening circular saws

Also Published As

Publication number Publication date
FI913803A (en) 1993-02-10
DE4292499T1 (en) 1994-06-09
GB2274079A (en) 1994-07-13
GB2274079B (en) 1995-05-10
FI88938C (en) 1993-07-26
WO1993002836A1 (en) 1993-02-18
SE503135C2 (en) 1996-04-01
AU2368592A (en) 1993-03-02
SE9400424L (en) 1994-02-09
FI88938B (en) 1993-04-15
FI913803A0 (en) 1991-08-09
JPH07500775A (en) 1995-01-26
GB9402153D0 (en) 1994-04-13

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Legal Events

Date Code Title Description
NUG Patent has lapsed