EP0256972A2 - Raffineur pour le traitement de matériaux fibreux - Google Patents

Raffineur pour le traitement de matériaux fibreux Download PDF

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Publication number
EP0256972A2
EP0256972A2 EP87730093A EP87730093A EP0256972A2 EP 0256972 A2 EP0256972 A2 EP 0256972A2 EP 87730093 A EP87730093 A EP 87730093A EP 87730093 A EP87730093 A EP 87730093A EP 0256972 A2 EP0256972 A2 EP 0256972A2
Authority
EP
European Patent Office
Prior art keywords
grinding
sectors
refiner
knives
area
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
EP87730093A
Other languages
German (de)
English (en)
Other versions
EP0256972B1 (fr
EP0256972A3 (en
Inventor
Siegfried Dipl.-Ing. Kleinhans
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens 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 Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to AT87730093T priority Critical patent/ATE59313T1/de
Publication of EP0256972A2 publication Critical patent/EP0256972A2/fr
Publication of EP0256972A3 publication Critical patent/EP0256972A3/de
Application granted granted Critical
Publication of EP0256972B1 publication Critical patent/EP0256972B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C7/00—Crushing or disintegrating by disc mills
    • B02C7/11—Details
    • B02C7/12—Shape or construction of discs
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • D21D1/30—Disc mills
    • D21D1/306—Discs

Definitions

  • the invention relates to a refiner for processing fiber material, consisting of two opposing grinding disks driven by an electric motor, the facing end faces of which have processing devices with groups of material grinding barriers or knives running parallel to one another along the circumference of the grinding disks and knives and intermediate flow channels .
  • Such refiners are e.g. B. from DE-OS 25 22 349 and DE-OS 27 24 161 known.
  • the refiners are used to shred raw material, e.g. B. wood chips, with the help of rotating processing devices, which are arranged on the opposite end faces of grinding disks.
  • These grinding disks are driven by electric motors, either by rotating only one grinding disk and moving against a fixed disk, or two grinding disks rotating in opposite directions are driven against each other, each of which is driven by its own electric motor.
  • the material to be shredded is fed into the space between the two grinding disks, passes through it generally radially from the inside to the outside and leaves the refiner as a pulp.
  • the processing devices of the known grinding disks with the groups of material grinding barriers or knife groups running parallel to one another and flow channels lying between them are arranged interchangeably on sectors of the grinding disk. These sectors are the same size as each other.
  • Knives have a uniform geometric arrangement in the groups, generally having an angle with respect to the radius.
  • the geometric arrangement of the processing equipment depends on the raw material to be processed.
  • a division of the sectors into two or more radially successive ring sectors with a different arrangement of the material grinding barriers or knives is also known.
  • the refiner and the driving electric motor are provided with their own bearings and are connected to each other via large, but flexible, torsionally rigid couplings.
  • the refiner's grinding disks and the drive motor rotor are arranged on a common shaft.
  • the operation of the refiner subjects the driving electric motor to great loads, which can lead to vibration problems and, as a result, damage. It is therefore customary to oversize the components of the refiner and in particular the fastening parts of the rotor of the drive motors in order to avoid damage.
  • the invention has for its object to reduce the outlay given by such oversizing, without increasing the susceptibility to damage in refiner arrangements with driving electric motors.
  • a refiner of the type described at the outset is designed in accordance with the invention in such a way that the sectors with the material grinding barrier or knife groups have an uneven division or different central angles along the circumference of the grinding disk.
  • each grinding disc is advantageously divided into at least two identical or almost identical areas with the same number of sectors, and in each area the central angles of the successive sectors give way strongly differ from one another and are repetitively different from area to area.
  • the influencing of the stimulating moments is independent of the geometrical arrangement of the processing devices in the sectors.
  • Each sector can also be divided into two or more radially consecutive ring sectors with a different arrangement of the material grinding barriers or knives.
  • Figure 1 shows schematically a longitudinal section through a refiner.
  • Figure 2 is a view of the End face of a grinding wheel of such a refiner shown.
  • FIG. 1 of the drawing shows the basic structure of a refiner with two grinding disks 1 rotating against one another, which lie on the rotor shaft 2 ⁇ , 2 jeweils of an electric motor 3, which is used for driving each, of a synchronous or asynchronous type, of which only the rotor is shown.
  • Each rotor shaft 2 is mounted in two plain bearings 4 so that a certain axial displacement of the rotor shafts 2 ⁇ , 2 ⁇ is possible. This is necessary because the processing devices 6 arranged on the mutually facing end faces 5 of the grinding disks 1 wear during the operation of the refiner and therefore have to be replaced in certain time periods.
  • the raw material 7 to be processed by the refiner e.g. B. wood chips
  • the space between the two grinding disks 1 is fed radially inwards by means of a feed tube 8.
  • a counter bearing 10 indicated only schematically as a surface, is provided for the shaft end 9 of the rotor shaft 2 ⁇ facing away from the grinding disk 1 while on the corresponding shaft end 11 of the rotor shaft 2 ⁇ acts on an only indicated hydraulic adjusting device 12, by means of which the desired operating conditions are produced.
  • FIG. 2 shows a view of the end face 5 of a grinding disk 1 which is designed in accordance with the invention.
  • the processing devices 6 each lie on sectors 13, which are exchangeably fastened in a suitable manner, not shown, on the end face 5 of the grinding disk 1.
  • the successive along the circumference of the grinding disc 1, which has a central opening 14 Sectors 13 have an uneven pitch t or differently sized central angles ⁇ , so that the sectors 13 are each of different sizes.
  • the grinding wheel 1 is provided with a total of sixteen sectors 13, one has chosen a sequence of sixteen different divisions t 1 to t 1, the sum of which gives a circular disc and of which the division t 1 is the largest and t 1 is the smallest. Correspondingly, one also has sixteen different central angles ⁇ , which give a total of 360 °.
  • the grinding disc 1 has been divided into four almost identical areas 15, which are delimited by broken lines in FIG. Four sectors 13 are accommodated in each of these areas.
  • four divisions are selected from the sequence of the different divisions for each area, which if possible do not follow one another as directly as possible in the size-ordered sequence of the divisions and which each add up correspond to the division of each area 15.
  • Each sector 13 carries the processing device 6 consisting of knives 16 arranged parallel to one another. These knives 16 are geometrically arranged and in their angle with respect to the radius selected so that they best correspond to the required processing of the raw material 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Paper (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Glass Compositions (AREA)
  • Prostheses (AREA)
  • Disintegrating Or Milling (AREA)
  • Artificial Filaments (AREA)
EP87730093A 1986-08-20 1987-08-13 Raffineur pour le traitement de matériaux fibreux Expired - Lifetime EP0256972B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87730093T ATE59313T1 (de) 1986-08-20 1987-08-13 Refiner zur bearbeitung von fasermaterial.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3628195 1986-08-20
DE19863628195 DE3628195A1 (de) 1986-08-20 1986-08-20 Refiner zur bearbeitung von fasermaterial

Publications (3)

Publication Number Publication Date
EP0256972A2 true EP0256972A2 (fr) 1988-02-24
EP0256972A3 EP0256972A3 (en) 1989-05-10
EP0256972B1 EP0256972B1 (fr) 1990-12-27

Family

ID=6307765

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87730093A Expired - Lifetime EP0256972B1 (fr) 1986-08-20 1987-08-13 Raffineur pour le traitement de matériaux fibreux

Country Status (5)

Country Link
US (1) US4813621A (fr)
EP (1) EP0256972B1 (fr)
AT (1) ATE59313T1 (fr)
DE (2) DE3628195A1 (fr)
FI (1) FI84189C (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990004673A1 (fr) * 1988-10-25 1990-05-03 Sunds Defibrator Industries Aktiebolag Procede de fabrication de pate de fibre
EP1574615A1 (fr) * 2004-03-10 2005-09-14 Voith Paper Patent GmbH Raffineur et garniture pour raffineur de pâte à papier
RU2314381C1 (ru) * 2006-06-19 2008-01-10 Государственное образовательное учреждение высшего профессионального образования "Сибирский государственный технологический университет" Размалывающая гарнитура для дисковой мельницы

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19508202A1 (de) * 1995-03-08 1996-09-12 Voith Sulzer Stoffaufbereitung Mahlmaschine und Mahlwerkzeug zum Mahlen von suspendiertem Faserstoffmaterial
CA2340895C (fr) * 1998-08-17 2006-11-07 John B. Matthew Plaques de raffineur de pate a papier et procede de fabrication associe
US6935589B1 (en) * 1998-08-17 2005-08-30 Norwalk Industrial Components, Llc Papermaking refiner plates and method of manufacture
DE19923865A1 (de) 1999-05-25 2000-11-30 Voith Sulzer Papiertech Patent Verfahren zur Herstellung von Garnituren für das mechanische Bearbeiten von wasserhaltigem Papierfaserstoff
US6325308B1 (en) 1999-09-28 2001-12-04 J & L Fiber Services, Inc. Refiner disc and method
US6422496B1 (en) * 2000-06-14 2002-07-23 Voith Sulzer Paper Technology North America, Inc. Refiner for refining a fiber suspension
WO2006043162A2 (fr) * 2004-10-21 2006-04-27 Welldone Weartec N.V. Element broyeur et moulins a corps de broyage, melangeurs, extrudeuses et vis sans fin de presses equipes de tels elements broyeurs

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US406954A (en) * 1889-07-16 potter
US25243A (en) * 1859-08-30 Quartz-crushing machine
US992000A (en) * 1910-08-17 1911-05-09 Nat Equip Co Grinding-disk.
US1778860A (en) * 1929-03-25 1930-10-21 Joseph A Lindenfelser Grinding burr
US3910511A (en) * 1974-05-20 1975-10-07 Westvaco Corp Open discharge pulp refiner
DE2724161A1 (de) * 1977-05-27 1978-11-30 Vyzk Ustav Papieru Celulozy Anordnung zum verarbeiten faseriger suspensionen durch mechanisches einwirken von messern
US4351489A (en) * 1978-06-21 1982-09-28 Laptev Lev N Refiner disk

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990004673A1 (fr) * 1988-10-25 1990-05-03 Sunds Defibrator Industries Aktiebolag Procede de fabrication de pate de fibre
EP1574615A1 (fr) * 2004-03-10 2005-09-14 Voith Paper Patent GmbH Raffineur et garniture pour raffineur de pâte à papier
RU2314381C1 (ru) * 2006-06-19 2008-01-10 Государственное образовательное учреждение высшего профессионального образования "Сибирский государственный технологический университет" Размалывающая гарнитура для дисковой мельницы

Also Published As

Publication number Publication date
ATE59313T1 (de) 1991-01-15
DE3628195A1 (de) 1988-02-25
DE3767078D1 (de) 1991-02-07
FI84189B (fi) 1991-07-15
FI84189C (fi) 1991-10-25
EP0256972B1 (fr) 1990-12-27
EP0256972A3 (en) 1989-05-10
US4813621A (en) 1989-03-21
FI873582A0 (fi) 1987-08-19
FI873582L (fi) 1988-02-21

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