WO2012120019A1 - Dispositif de dispersion - Google Patents

Dispositif de dispersion Download PDF

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Publication number
WO2012120019A1
WO2012120019A1 PCT/EP2012/053854 EP2012053854W WO2012120019A1 WO 2012120019 A1 WO2012120019 A1 WO 2012120019A1 EP 2012053854 W EP2012053854 W EP 2012053854W WO 2012120019 A1 WO2012120019 A1 WO 2012120019A1
Authority
WO
WIPO (PCT)
Prior art keywords
teeth
tooth
elevations
treatment
treatment tool
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.)
Ceased
Application number
PCT/EP2012/053854
Other languages
German (de)
English (en)
Inventor
Bernd Kraft
Gerd Gottschalk
Oliver Lüdtke
Roland Rauch
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
Priority to EP12708125.5A priority Critical patent/EP2683870B1/fr
Priority to CN201280012310.4A priority patent/CN103415662B/zh
Publication of WO2012120019A1 publication Critical patent/WO2012120019A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • D21D1/004—Methods of beating or refining including disperging or deflaking
    • D21D1/006—Disc mills
    • 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
    • D21D1/004—Methods of beating or refining including disperging or deflaking
    • D21D1/006—Disc mills
    • D21D1/008—Discs

Definitions

  • the invention relates to a device for the mechanical treatment of
  • Treatment tool and a second treatment tool is arranged, wherein the treatment tools each have a rotationally symmetrical shape, are arranged coaxially to each other, in each case in a plurality of annular, concentric to their center rows arranged teeth between which
  • Gaps are located, which are flowed through radially by the fibrous material and annular spaces are present between the rows of teeth, which are arranged so that at least one row of teeth of a treatment tool in an annular space of the other, complementary
  • Devices of the above-mentioned Art be z. B. used to improve the quality of pulp, which was obtained from waste paper.
  • paper pulp can be homogenized by dispersing and thereby significantly improved.
  • a pulp which has a dry content of between 15 and 35% and to a
  • the object of the invention is therefore to improve the efficiency of the treatment with the lowest possible energy consumption.
  • this object is achieved in that at least a part of the tooth spaces has elevations that extend beyond the tooth base.
  • the tooth spaces are largely flat and formed approximately at the level of the annular spaces between the rows of teeth.
  • the pulp can no longer pass radially unhindered through the tooth gaps, which considerably increases the efficiency of the treatment. Therefore, it is also advantageous if the vast majority, preferably all tooth gaps have elevations that extend beyond the tooth base.
  • the elevations have a cross section similar to the teeth in the radial direction, which is preferably designed in the shape of a truncated pyramid.
  • the teeth and protrusions have an outgoing from the respective annular space reason that leads over the radial edge to the head.
  • the flank angle ie the angle between the flanks of the teeth and the elevations with respect to the radials should differ only by a maximum of 20 °, preferably equal.
  • the tooth gaps a must ensure certain cross-sectional area for the flow of the pulp. If this cross-sectional area is too small, there is a risk of clogging and an increased energy requirement.
  • the distance between the edge of a tooth and the edge of the adjacent elevation in the radial direction should be between 1 and 5 mm, preferably between 2 and 3 mm.
  • the tooth head should have a height between 10 and 40, preferably between 20 and 25 mm above the tooth base.
  • the width of the teeth and the elevations in the circumferential direction is approximately the same and is preferably between 1 and 10 mm, in particular between 2 and 5 mm.
  • the efficiency of the treatment can be further increased if teeth and / or elevations, preferably have radially extending grooves.
  • radially extending grooves are understood that extend at least with a directional component perpendicular to the circumferential direction of the treatment tool.
  • the pulp suspension flows through the gap between the
  • Treatment tools usually from the inside out. While the treatment tools move relative to each other, the radially extending grooves form additional working edges, which improves the dispersion, in particular the dirt dot comminution, the ink separation and the sticky comminution.
  • the energy consumption and wear can be significantly reduced.
  • the groove extends over the entire tooth or the entire elevation or only over a part of the tooth or the elevation. For the same reason, it can be equally beneficial if both
  • Treatment tools of oppositely driven rotors are formed or a treatment tool of a driven rotor and the second
  • Treatment tool is formed by a stationary stator.
  • the device is particularly suitable for dispersing the pulp, the high number of edges, in particular in the tooth gaps, the efficiency of the pulp
  • FIG. 1 shows a schematic cross section through a disperser
  • Figure 2 a partial cross section through a treatment tool 3.4 in the radial
  • FIG. 3 shows a partial cross section through a treatment tool 3, 4 in FIG
  • the high-consistency paper pulp 1 is pressed according to Figure 1 directly into the central region of the Dispergergarnitur, which is formed by the two treatment tools 3,4.
  • While a treatment tool 3 is stationary and thus designed as a stator, the other treatment tool 4 is rotatably mounted in the housing 2 of the disperser.
  • Dispergergarnitur with the stator and the rotor is thus fed radially inward.
  • dispersion is effected by having teeth 6 of relatively high Speed are moved relatively close to each other and the fibrous material 1 therebetween is subjected to strong shear forces.
  • the pulp 1 can be previously heated by superheated steam. After dispersion, the dispersed pulp 1 falls down through the outlet 15.
  • the treatment tools 3,4 each have a rotationally symmetrical shape.
  • the coaxially arranged treatment tools 3,4 each have a plurality of annular, concentric to their center rows 5 arranged teeth 6, between which there are tooth gaps 7, which are flowed through by the pulp 1 radially outward.
  • annular spaces 8 are provided, which are arranged so that at least one row of teeth 5 of a treatment tool 3,4 in an annular space 8 of the other, complementary
  • Treatment Tool 4.3 extends.
  • the flow through the tooth gaps 7 is hindered as far as it is conducive to the treatment of the pulp 1 ,
  • the angle 17 between the flanks 12 of the teeth 6 and the angle 18 between the flanks 19 of the elevations 9 is the same size.
  • the tooth head 13 has a height between 20 and 25 mm above the tooth base 1 first
  • the height of the head 21 of the elevations 9 results as a function of the distance 20 between the flanks, the flank angle 18 and the minimum extension of the head 21 in the radial direction 14.
  • the width of the teeth 6 and the elevations 9 in the circumferential direction 16 is approximately equal and is between 2 and 5 mm.
  • the teeth 6 and / or the elevations 9, as shown in Figure 3 preferably have grooves 10 with a directional component in the radial direction 14.
  • These grooves 10 may extend over the entire tooth 6 or the entire elevation 9 or only a part thereof.
  • the partial extension for example, exclusively via the head 13,21 or exclusively via a flank 12, 19 done.

Landscapes

  • Paper (AREA)
  • Crushing And Grinding (AREA)

Abstract

L'invention concerne un dispositif de traitement mécanique d'une matière fibreuse très consistante (1), doté d'un boîtier (2) dans lequel sont disposés un premier outil de traitement (3) et un deuxième outil de traitement (4). Les outils de traitement (3, 4) présentent respectivement une forme à symétrie de rotation, sont disposés de manière coaxiale l'un par rapport à l'autre et comportent des dents (6) disposées respectivement en plusieurs rangées (5) annulaires concentriques par rapport à leur centre, entre lesquelles se situent des espaces interdentaires(7) parcourus radialement par la matière fibreuse (1), des espaces intermédiaires (8) annulaires étant situés entre les rangées de dents (5). Lesdits espaces intermédiaires sont disposés de sorte qu'au moins une rangée de dents (5) d'un outil de traitement (3, 4) passe dans un espace intermédiaire annulaire (8) de l'autre outil de traitement complémentaire (4, 3). L'efficacité du traitement doit être améliorée avec des besoins énergétiques aussi faibles que possible en ce qu'au moins une partie des espaces interdentaires (7) comporte des élévations (9) faisant saillie du fond de dent (11).
PCT/EP2012/053854 2011-03-09 2012-03-07 Dispositif de dispersion Ceased WO2012120019A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12708125.5A EP2683870B1 (fr) 2011-03-09 2012-03-07 Dispositif de dispersion
CN201280012310.4A CN103415662B (zh) 2011-03-09 2012-03-07 分散器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011005273.9 2011-03-09
DE201110005273 DE102011005273A1 (de) 2011-03-09 2011-03-09 Disperger

Publications (1)

Publication Number Publication Date
WO2012120019A1 true WO2012120019A1 (fr) 2012-09-13

Family

ID=45814499

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/053854 Ceased WO2012120019A1 (fr) 2011-03-09 2012-03-07 Dispositif de dispersion

Country Status (4)

Country Link
EP (2) EP2757192A1 (fr)
CN (1) CN103415662B (fr)
DE (1) DE102011005273A1 (fr)
WO (1) WO2012120019A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020070538A (ja) * 2018-10-29 2020-05-07 アンドリッツ インコーポレーテッド ディスパーザー内の被支持歯付プレート
US11859344B2 (en) 2018-10-29 2024-01-02 Andritz Inc. Supported toothed plates in a disperser with buttress extending from the substrate and between a first face of a tooth

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015212012B4 (de) * 2015-06-29 2017-03-16 Voith Patent Gmbh Disperger
DE102020105875A1 (de) * 2020-03-05 2021-09-09 Voith Patent Gmbh Faserbehandlungsvorrichtung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19541892C1 (de) * 1995-11-10 1996-11-21 Voith Sulzer Stoffaufbereitung Vorrichtung zur mechanischen Behandlung von hochkonsistentem Faserstoff
WO2011069703A2 (fr) * 2009-12-08 2011-06-16 Voith Patent Gmbh Appareil de dispersion iii

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6422496B1 (en) * 2000-06-14 2002-07-23 Voith Sulzer Paper Technology North America, Inc. Refiner for refining a fiber suspension
US7172148B2 (en) * 2004-02-05 2007-02-06 Andritz Inc. Grooved pyramid disperger plate
US8342437B2 (en) * 2009-04-23 2013-01-01 Andritz Inc. Deflaker plate and methods relating thereto

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19541892C1 (de) * 1995-11-10 1996-11-21 Voith Sulzer Stoffaufbereitung Vorrichtung zur mechanischen Behandlung von hochkonsistentem Faserstoff
WO2011069703A2 (fr) * 2009-12-08 2011-06-16 Voith Patent Gmbh Appareil de dispersion iii

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020070538A (ja) * 2018-10-29 2020-05-07 アンドリッツ インコーポレーテッド ディスパーザー内の被支持歯付プレート
JP2023160864A (ja) * 2018-10-29 2023-11-02 アンドリッツ インコーポレーテッド ディスパーザー内の被支持歯付プレート
US11851816B2 (en) 2018-10-29 2023-12-26 Andritz Inc. Supported toothed plates in a disperser including bridge between teeth with cross-sectional shape
US11859344B2 (en) 2018-10-29 2024-01-02 Andritz Inc. Supported toothed plates in a disperser with buttress extending from the substrate and between a first face of a tooth
JP7451137B2 (ja) 2018-10-29 2024-03-18 アンドリッツ インコーポレーテッド ディスパーザー内の被支持歯付プレート

Also Published As

Publication number Publication date
CN103415662B (zh) 2016-08-17
DE102011005273A1 (de) 2012-09-13
EP2683870A1 (fr) 2014-01-15
EP2683870B1 (fr) 2016-05-18
EP2757192A1 (fr) 2014-07-23
CN103415662A (zh) 2013-11-27

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