EP3927883A1 - Segment d'ensemble de raffinage - Google Patents

Segment d'ensemble de raffinage

Info

Publication number
EP3927883A1
EP3927883A1 EP19832052.5A EP19832052A EP3927883A1 EP 3927883 A1 EP3927883 A1 EP 3927883A1 EP 19832052 A EP19832052 A EP 19832052A EP 3927883 A1 EP3927883 A1 EP 3927883A1
Authority
EP
European Patent Office
Prior art keywords
channels
treatment elements
treatment
segment
grinding
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.)
Pending
Application number
EP19832052.5A
Other languages
German (de)
English (en)
Inventor
Martin Schmid
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.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
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 Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP3927883A1 publication Critical patent/EP3927883A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • D21D1/22—Jordans
    • 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

Definitions

  • the invention relates to a clothing segment for grinding aqueous suspended fibrous material in a grinding gap delimited by two treatment surfaces that rotate relative to one another and formed by clothing segments, consisting of a base body with elongated treatment elements pointing towards the grinding gap and at least one directional component radially running treatment elements and grooves running between them.
  • the invention also includes a treatment surface consisting of several clothing segments according to the invention arranged next to one another and a method for producing a clothing segment according to the invention for grinding aqueous suspended fiber in a grinding gap, consisting of a base body with treatment elements facing the grinding gap.
  • Such sets have been known for a long time and are installed in grinding machines - so-called refiners.
  • the suspension in refiners has a solids content of around 2-8%.
  • Such machines generally have at least one rotor and at least one stator with either disc-shaped or conical-shaped treatment surfaces on which the clothing is attached so that grinding gaps can be formed between them.
  • the sets have ridges and grooves on the treatment surfaces, which is why they are also referred to as "knife sets”.
  • the sets are subject to high wear and tear and must therefore be replaced at certain intervals. Wear can also lead to a change in the machining effect during the service life.
  • a significant part of the operating costs associated with the mechanical treatment of pulps in the pulp and paper industry comes from energy costs. Therefore it has always been an endeavor, trimmings and the to build and operate the machines used in such a way that - measured against the desired success - an excessive amount of energy is required.
  • the object of the invention is to extend the service life of such clothing segments with the most efficient possible grinding.
  • the object was achieved in that a plurality of at least one directional component radially and at least approximately parallel to the grinding gap and each having different distances to the grinding gap are arranged in the base body, which at least partially overlap one another or with the groove base viewed in the direction of rotation.
  • the width of the channels should essentially correspond to the width of the grooves and / or the width of the wall between adjacent channels in the direction of rotation should essentially correspond to the width of the treatment elements.
  • the channels should each run at least approximately parallel to at least one elongated treatment element located axially approximately above it.
  • a slight inclination of the channels towards the grinding gap can also be advantageous. If the channels are inclined radially outward towards the grinding gap, the channels open radially outward first when worn. In this way it is ensured that a sufficiently large open groove area and the required cutting edge length of the treatment elements are also present with increasing wear.
  • the design and / or arrangement of the channels of the treatment area, the clothing segment or a zone thereof is chosen so that the open area of the grooves and / or the length of the cut edge remains approximately the same over the entire service life, so that the idle power over the entire service life remains about the same.
  • the groove base of adjacent grooves is of different depths.
  • the adjacent grooves are advantageously of different depths not only in the initial state but also during wear.
  • the channels of adjacent planes should run offset to one another in the direction of rotation in such a way that, viewed in the direction of rotation, they partially overlap. Regardless of this, in the interests of homogeneous grinding, the grooves should at least predominantly have a constant width and / or the width of the treatment elements should be at least predominantly the same size.
  • the width of the treatment elements is between 0.1 and 1.5 mm and / or the height of the treatment elements is less than 5 mm.
  • the elongate treatment elements and the channels advantageously run at least in sections in an uneven manner.
  • the mostly circular or circular ring-shaped treatment surfaces are usually composed of several clothing segments.
  • the circle diameter of the base body should be between 35 and 150 cm.
  • the treatment elements are at least partially, preferably completely and advantageously also the base body at least partially applied in layers from one or more liquid and / or pasty and / or solid materials and are subjected to a physical or chemical hardening or melting process. From this hardening or
  • the melting process also includes sintering.
  • the material and shape of the treatment elements as well as the channels can be adapted more easily and comprehensively to the special requirements. It must be noted that, depending on the material applied and the special hardening or melting process, shrinkage of up to 30% can occur. Because of the high loads in such machines for grinding fibrous materials, the material applied in layers should be powdery and / or comprise one or more metals or metal compounds.
  • the material applied in layers is sintered or fused by means of a laser.
  • Ceramic layers can also be produced in this way.
  • the surface roughness of the treatment element can be influenced via the grain size of the powder.
  • FIG. 1 a schematic cross section through a grinding arrangement
  • FIG. 2 a plan view of a set segment 2 of the grinding arrangement
  • FIG. 3 a partial cross section through two adjacent clothing segments 2
  • FIG. 4 a partial cross section through another clothing segment 2.
  • a grinding gap 3 is formed by a stationary grinding surface coupled to the housing and a grinding surface rotating about an axis of rotation 10.
  • the two circular grinding surfaces run parallel to one another, the distance between them usually being adjustable.
  • conical treatment surfaces are also possible.
  • the rotating grinding surface is moved in the direction of rotation by a shaft rotatably mounted in the housing. This shaft is driven by a drive that is also present in the housing, for example.
  • the fiber suspension 1 to be milled reaches the milling gap 3 between the two milling surfaces via an inlet through the center. However, it can also be supplied through openings in the grinding surface.
  • the fiber suspension 1 passes the interacting grinding surfaces radially outwards and leaves the adjoining annular space through an outlet.
  • Both grinding surfaces are each formed by several circular segment or circular ring segment-shaped grinding set segments 2 according to FIG. 2, which each extend over a circumferential segment of the corresponding grinding surface and are lined up next to one another in the circumferential direction.
  • the clothing segments 2 are each formed by a base plate 4 with a plurality of essentially radially extending, strip-shaped treatment elements 5 and grooves 6 in between.
  • the treatment elements 5 have an elongated cross-sectional shape parallel to the base area 4, the upper side of the treatment elements 5 facing the treatment gap 3 generally running parallel to the outer surface of the base body 4.
  • the treatment elements 5 often run unevenly, at least over a radial section, that is to say curved, corrugated or kinked, as can be seen in FIG.
  • the base body 4 and the treatment elements 5 of the clothing segments 2 are completely applied in layers from a liquid, pasty or solid material and subjected to a physical or chemical hardening or melting process.
  • the application of powdered material in layers which comprises ceramic or one or more metals or metal compounds, is particularly suitable.
  • This material applied in layers can then be sintered or fused by laser after each layer or, in a first step, glued with binding agent and later sintered (binder jetting process). In the latter process, the binder evaporates.
  • the arrangement of the treatment elements 5 on the base body 4 can be selected as required.
  • the circle diameter of the base body 4 is between 35 and 150 cm.
  • a plurality of at least one directional component of at least one directional component running radially and parallel to the grinding gap 3 and each having different distances from the grinding gap 3 channels 8 are arranged in the base body 4, which partially overlap one another or with the groove base viewed in the direction of rotation 11.
  • this base body 4 is made much easier by applying it in layers.
  • the channels 8 should each run at least approximately parallel to an elongated treatment element 5 located axially above it. A slight inclination of the channels 8 towards the grinding gap 3 can in particular be advantageous radially outward for the flow.
  • the grooves 6 have at least predominantly a constant width.
  • the width of the treatment elements 5 also remains at least predominantly the same in the radial direction.
  • the width of the channels 8 essentially corresponds to the width of the grooves 6 and the width of the wall 9 between adjacent channels 8 in the direction of rotation 11 essentially corresponds to the width the treatment elements 5.
  • the channels 8 of adjacent planes 7 are arranged offset from one another in the direction of rotation 11. In addition, the channels 8 of adjacent planes 7 partially overlap in the direction of rotation 11, so that when a wall 9 is completely removed, the adjacent, axially underlying channel 8 is opened.
  • the fleas of the treatment elements 5 is here, for example, below 3 mm and the width of the treatment elements 5 between 0.1 and 1 mm.
  • the width of the treatment elements 5 between 0.1 and 1 mm.
  • At least some of the planes 7 of two adjacent clothing segments 2 can be at different distances from the grinding gap 3.
  • the cross-sections of the channels 8 of adjacent clothing segments 2 can also differ. While the channels 8 of one clothing segment 2 are circular, the channels 8 of the adjacent clothing segment 2 here have an elliptical cross section, for example.
  • the clothing segments 2 themselves to have differently designed zones, the channels 8 of these zones being arranged differently and / or differently designed.
  • FIG. 2 shows feed channels 12 which extend radially outward into the grinding surface and, because of the lack of treatment elements 5, support the supply of fiber suspension 1 into the grinding gap 3.
  • FIG. 4 shows axially offset channels 8 with a rectangular cross section.
  • the aim is to ensure an open groove surface and cutting edge length of the same height in every state of wear.
  • adjacent grooves 6 are of different depths in the initial state and during wear.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Paper (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Crushing And Grinding (AREA)

Abstract

L'invention concerne un segment d'ensemble (2) de raffinage conçu pour traiter une matière fibreuse (1) en suspension aqueuse dans un entrefer (3) délimité par deux surfaces de traitement formées par des segments d'ensemble (2) de raffinage et effectuant un mouvement rotatif l'une par rapport à l'autre, comprenant un corps de base (4) comportant des éléments de traitement (5) allongés orientés vers l'entrefer (3) qui s'étendent radialement selon au moins une composante directionnelle, et des rainures (6) agencées entre ces éléments de traitement (5). L'objectif de cette invention est de prolonger la durée de service de ce segment d'ensemble de raffinage. À cet effet, le corps de base (4) comporte une pluralité de canaux (8) qui s'étendent radialement selon au moins une composante directionnelle et parallèlement à l'entrefer (3), à différentes distances de cet entrefer (3), et qui se chevauchent les uns les autres ou sont recouverts, au moins partiellement, par la base des rainures, dans la direction de rotation (11).
EP19832052.5A 2019-02-19 2019-12-17 Segment d'ensemble de raffinage Pending EP3927883A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019104105.8A DE102019104105B3 (de) 2019-02-19 2019-02-19 Mahlgarnitursegment
PCT/EP2019/085613 WO2020169236A1 (fr) 2019-02-19 2019-12-17 Segment d'ensemble de raffinage

Publications (1)

Publication Number Publication Date
EP3927883A1 true EP3927883A1 (fr) 2021-12-29

Family

ID=69105809

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19832052.5A Pending EP3927883A1 (fr) 2019-02-19 2019-12-17 Segment d'ensemble de raffinage

Country Status (8)

Country Link
US (1) US20210381164A1 (fr)
EP (1) EP3927883A1 (fr)
KR (1) KR20210125572A (fr)
CN (1) CN113412351B (fr)
BR (1) BR112021016209A2 (fr)
CA (1) CA3128925C (fr)
DE (1) DE102019104105B3 (fr)
WO (1) WO2020169236A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020124895A1 (de) 2020-09-24 2022-03-24 Voith Patent Gmbh Mahlgarnitursegment
EP4217536A1 (fr) 2020-09-24 2023-08-02 Voith Patent GmbH Segment de garniture de raffinage

Family Cites Families (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125306A (en) * 1964-03-17 Grinding disk segment for wood chips and the like
US1662572A (en) * 1928-03-13 fryer
US3104837A (en) * 1961-01-09 1963-09-24 Bauer Bros Co Self cleaning refiner plate
US4157669A (en) * 1977-10-12 1979-06-12 Pilao S/A Maquinas E Equipamentos Method to manufacture comminuting discs for wood pulp refining machines
SE413632B (sv) * 1978-03-03 1980-06-16 Defibrator Ab Anordning vid malorgan for malapparater for fibrost, foretredesvis vegetabiliskt material
BR8402044A (pt) * 1984-04-27 1985-12-03 Inox Ind E Comercio De Ago Ltd Aperfeicoamento em discos para refinadoras de polpa para papel e similares
US5046672A (en) * 1990-08-31 1991-09-10 Beloit Corporation Refiner plate groove configuration
FR2667804B1 (fr) * 1990-10-11 1995-02-10 Technogenia Sa Plaque a surface antiabrasion, et procede pour sa realisation.
US5476228A (en) * 1994-03-07 1995-12-19 Beloit Technologies, Inc. Refiner disk with alternating depth grooves
US5934585A (en) * 1997-05-05 1999-08-10 J & L Fiber Services Inc Refiner plate assembly and method of mounting
US5893525A (en) * 1997-07-01 1999-04-13 Durametal Corporation Refiner plate with variable pitch
US5988538A (en) * 1998-07-28 1999-11-23 J&L Fiber Services, Inc. Refiner disc having steam exhaust channel
US6607153B1 (en) * 1998-08-19 2003-08-19 Durametal Corporation Refiner plate steam management system
DE19955009C2 (de) * 1999-11-16 2001-10-18 Voith Paper Patent Gmbh Verfahren zur Herstellung von Garnituren für das mechanische Bearbeiten von suspendiertem Faserstoffmaterial
US20020070303A1 (en) * 2000-12-12 2002-06-13 J & L Fiber Services, Inc. Adjustable refiner plate
DE102004016661A1 (de) 2004-04-05 2005-10-20 Voith Paper Patent Gmbh Verfahren zur Herstellung von Garnituren für das mechanische Bearbeiten, insb. Mahlen von wasserhaltigenm Papierstoff
US7300540B2 (en) * 2004-07-08 2007-11-27 Andritz Inc. Energy efficient TMP refining of destructured chips
CA2507321C (fr) * 2004-07-08 2012-06-26 Andritz Inc. Plaque de raffinage a grande intensite avec zone de defibrage interne
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
MXNL05000017A (es) * 2005-02-22 2006-03-23 Julio Antonio Trevino Morales Sector de refino y metodo de fabricacion.
US20130001334A1 (en) * 2005-02-28 2013-01-03 Johansson Ola M Refiners and methods of refining pulp
US20070210197A1 (en) * 2006-03-10 2007-09-13 Carpenter Charles T Refiner plate
NZ596892A (en) * 2007-02-08 2012-02-24 Andritz Inc Mechanical pulp refining through plates with large holdback angles and sidewall protrusions
FI124393B (fi) * 2008-06-19 2014-08-15 Valmet Technologies Inc Jauhin ja menetelmä kuitumaisen materiaalin jauhamiseksi ja teräsegmentti kuitumaisen materiaalin jauhamiseksi tarkoitettuun jauhimeen
FI124677B (fi) * 2008-06-19 2014-11-28 Valmet Technologies Inc Jauhin, jauhinpinta, teräsegmentti ja menetelmä kuitumaisen materiaalin jauhamiseksi
WO2009155541A2 (fr) * 2008-06-21 2009-12-23 J&L Fiber Services, Inc. Procédé et ensemble plaque de raffineur comprenant une évacuation pour la zone de raffinage
DE102008046592A1 (de) * 2008-09-10 2010-03-11 Voith Patent Gmbh Verfahren zur Mahlung von wässrig suspendierten Zellstofffasern sowie Mahlgarnitur zu seiner Durchführung
FI121929B (fi) * 2009-04-03 2011-06-15 Metso Paper Inc Jauhimen jauhinpinta
DE102010029752A1 (de) * 2010-06-07 2011-12-08 Voith Patent Gmbh Verfahren zur Mahlung von wässrig suspendierten Zellstofffasern sowie Mahlgarnitur zu seiner Durchführung
US9708765B2 (en) * 2011-07-13 2017-07-18 Andritz Inc. Rotor refiner plate element for counter-rotating refiner having curved bars and serrated leading edges
SE537048C2 (sv) * 2012-03-05 2014-12-16 Valmet Oy Apparat för att tillverka fibermassa av lignocellulosahaltigt material
US9085850B2 (en) * 2012-04-13 2015-07-21 Andritz Inc. Reversible low energy refiner plates
US9181654B2 (en) * 2012-05-30 2015-11-10 Andritz Inc. Refiner plate having a smooth, wave-like groove and related methods
US9968938B2 (en) * 2012-09-17 2018-05-15 Andritz Inc. Refiner plate with gradually changing geometry
US20140110511A1 (en) * 2012-10-18 2014-04-24 Andritz Inc. Refiner plates with short groove segments for refining lignocellulosic material, and methods related thereto
US9604221B2 (en) * 2012-11-09 2017-03-28 Andrtiz Inc. Stator refiner plate element having curved bars and serrated leading edges
US9145641B2 (en) * 2012-12-13 2015-09-29 Andritz Inc. Apparatus for disperser plate and method to refine paper
FI125739B (fi) * 2012-12-27 2016-01-29 Valmet Technologies Inc Teräelementti ja jauhin
SE537820C2 (sv) * 2014-02-10 2015-10-27 Valmet Oy Raffinör
PT3140454T (pt) * 2014-05-07 2020-02-25 Univ Maine System Produção de elevada eficiência de celulose nanofibrilada
CA2890381C (fr) * 2014-05-26 2017-07-11 Valmet Technologies, Inc. Segment de lame d'un raffineur a disque
DE102014009588A1 (de) * 2014-06-27 2016-01-14 Andritz Fiedler Gmbh Garnitur für das mechanische Bearbeiten, insbesondere Mahlen von suspendiertem Faserstoffmaterial
FI126263B (en) * 2014-10-29 2016-09-15 Valmet Technologies Inc Blade element for refiner and refiner for grinding fibrous material
US10697117B2 (en) * 2014-11-19 2020-06-30 Andritz Inc. Segmented rotor cap assembly
DE102015207536A1 (de) * 2015-04-24 2016-10-27 Voith Patent Gmbh Behandlungsgarnitur
DE102015223027A1 (de) * 2015-11-23 2017-05-24 Voith Patent Gmbh Mahlgarnitur
SE1650847A1 (en) * 2016-06-15 2017-11-07 Valmet Oy Refine plate segment with pre-dam
DE102022131903A1 (de) * 2022-12-01 2024-06-06 Bayerische Motoren Werke Aktiengesellschaft Bedieneinheit zur anordnung an einem lenkrad in einem kraftfahrzeug

Also Published As

Publication number Publication date
CA3128925C (fr) 2023-09-26
CA3128925A1 (fr) 2020-08-27
DE102019104105B3 (de) 2020-06-18
US20210381164A1 (en) 2021-12-09
WO2020169236A1 (fr) 2020-08-27
BR112021016209A2 (pt) 2021-10-05
KR20210125572A (ko) 2021-10-18
CN113412351A (zh) 2021-09-17
CN113412351B (zh) 2023-01-20

Similar Documents

Publication Publication Date Title
WO2010060685A1 (fr) Procédé de broyage de fibres de pâte à papier en suspension aqueuse ainsi que garnitures de broyage pour la mise en oeuvre de ce procédé
WO2020169236A1 (fr) Segment d'ensemble de raffinage
EP3398684B1 (fr) Garniture pour rafineur de matières fibreuses
EP0731210B1 (fr) Machine de raffinage et outil de raffinage pour le raffinage des matières fibreuses en suspension
EP3899135B1 (fr) Dispositif de broyage
DE102008039003A1 (de) Verfahren zur Mahlung von wässrig suspendierten Zellstofffasern sowie Mahlgarnitur zu seiner Durchführung
WO2009097963A2 (fr) Dispositif de traitement de matières fibreuses pour la production de papier ou de carton
EP4217535A1 (fr) Segment de plaque de raffineur
WO2022043036A1 (fr) Commande d'un dispositif de traitement de fibres
WO2010028711A1 (fr) Procédé de broyage de fibres de cellulose en suspension aqueuse et garniture de broyage permettant sa mise en oeuvre
WO2011107339A1 (fr) Procédé de broyage de fibres de cellulose dans une suspension aqueuse et garnitures de broyage pour sa mise en œuvre
WO2022063643A1 (fr) Segment de garniture de raffinage
EP3914768A1 (fr) Procédé de commande d'un dispositif de traitement de matière fibreuse de haute consistance
EP3714098B1 (fr) Dispositif de broyage
WO2019042758A1 (fr) Système de raffinage conique
WO2011098147A1 (fr) Procédé pour broyer des fibres cellulosiques en suspension aqueuse et unité de broyage pour sa mise en oeuvre
WO2011069704A2 (fr) Appareil de dispersion iv
EP3801814B1 (fr) Filtre à disques
DE102005004344B4 (de) Verfahren zur Mahlung von wässrig suspendierten Zellstofffasern
EP4065766A1 (fr) Appareil de traitement de matériau fibreux
DE202009018666U1 (de) Disperger IV
DE102011075956A1 (de) Langfasermahlung

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20210920

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)