WO2011120763A1 - Dispositif de broyage - Google Patents

Dispositif de broyage Download PDF

Info

Publication number
WO2011120763A1
WO2011120763A1 PCT/EP2011/053413 EP2011053413W WO2011120763A1 WO 2011120763 A1 WO2011120763 A1 WO 2011120763A1 EP 2011053413 W EP2011053413 W EP 2011053413W WO 2011120763 A1 WO2011120763 A1 WO 2011120763A1
Authority
WO
WIPO (PCT)
Prior art keywords
grinding
mahlleisten
arrangement according
radially
strips
Prior art date
Application number
PCT/EP2011/053413
Other languages
German (de)
English (en)
Inventor
Oliver Lüdtke
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 WO2011120763A1 publication Critical patent/WO2011120763A1/fr

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
    • D21D1/303—Double 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
    • D21D1/20—Methods of refining
    • D21D1/30—Disc mills

Definitions

  • the invention relates to Mahlan extracten for grinding aqueous pulp fibers suspended between two Mahlspalt forming, pressed against each other and moving relative grinding surfaces with Mahlleisten and intervening grooves, wherein at least one grinding surface rotates about a perpendicular passing through the middle of the grinding surface axis of rotation and the Mahlleisten with a significant directional component extending radially to the axis of rotation.
  • Knife called and formed the grinding surfaces of Mahlgarnituren.
  • the refiner can be designed as a disc refiner or cone refiner.
  • the grinding sets must be optimally adapted to the pulp to be treated, also to prevent excessive wear of the sets.
  • Waste paper fibers as their content of long fibers can vary considerably.
  • the object of the invention is therefore to ensure efficient grinding with the least possible wear, in particular with varying long fiber content.
  • this object is achieved in that the width of the grinding strips increases at least one, in particular both grinding surfaces radially outward.
  • the grinding surfaces are designed differently, in particular if the grinding bars of a grinding surface are straight and the grinding bars of the other grinding surface are at least partially odd.
  • the increasing width of the grinding bars has a very positive effect on the
  • the grinding bars of a grinding surface are straight and the inclination of the grinding bars of the other grinding surface to the radial axis extending from the rotation axis increases radially outwards.
  • This orientation of the grinding bars increases the cutting angle radially outward, which improves the efficiency of grinding independent of the long fiber content. This is due, in particular, to the fact that different fibers often also require different cutting angles and, as a result of the invention, a cutting angle range is realized.
  • the cutting angle is formed by the two grinding edges of the sweeping Mahlleisten the opposing grinding surfaces in their relative movement.
  • the straight Mahlleisten should be inclined about 5 to 15 ° to the radial and the inclination of the odd Mahlleisten the Radial inside in the range between 5 and 15 ° and radially outside between 40 and 55 °.
  • the inclination of the odd grinding bars to the radial increases continuously outward, or else the inclination of the odd grinding bars to the radial increases outwardly abruptly.
  • the inclination of the odd grinding bars to the radial outward sections remains constant or if the inclination of the odd grinding bars to the radial changes outwardly in sections, preferably continuously increases.
  • the width of the grinding bars increases continuously radially outwards.
  • the grinding bars of both grinding surfaces in the respective crossing region should be about the same width when sweeping the Mahlleisten the opposite grinding surfaces and the width preferably between 1, 2 and 4 mm.
  • the intersection of intersecting grinding strips often referred to as Jagenberg surface, amounts to a total of about 18 - 28% of the total grinding surface and essentially influences the hydraulic counterforce in the grinding gap.
  • both grinding surfaces rotate about the same axis of rotation in the opposite direction or at different speeds in the same direction or rotate only one grinding surface.
  • the width of the grooves of the rotating grinding surface should be almost radially outward which helps to increase the velocity of the fiber suspension from inside to outside.
  • the width of the grooves of the non-rotating grinding surface should increase radially outward and preferably be radially inwardly between 2 and 4 mm and radially outside between 3 and 5 mm.
  • At least one, preferably all grinding bars should extend without interruption radially as far as possible over the entire grinding surface.
  • At least one, preferably one rotating grinding surface should have at least two annular rows of grinding bars arranged radially one behind the other. It may be advantageous if between the radial one behind the other
  • FIG. 1 a partial cross section through a disk refiner
  • Figure 2 a Mahlgarnitur 14 for a stator 16
  • Figure 3 a Mahlgarnitur 13 for a rotor 15;
  • Figure 4 another Mahlgarnitur 13 for a rotor 15;
  • Figure 5 the cutting angle 9 between two opposite Mahlleisten 3.4;
  • Figure 6 + 7 a grinding surface 1 with two annular rows of odd
  • the grinding arrangement according to FIG. 1 is formed by a fixed stator 16 and a rotor 15 rotating about a rotation axis 7. While on the stator 16 a Mahlgarnitur 14 to form the non-rotating grinding surface 2 is releasably secured by screws 1 1, a differently designed Mahlgarnitur 13 is releasably attached to the rotor 15 to form the rotating grinding surface 1. In this case, the two circular grinding surfaces 1, 2 parallel to each other, wherein the distance between them is shown exaggerated.
  • Both Mahlgarnituren 13,14 have on the side of their grinding surfaces 1, 2 a plurality of substantially radially extending Mahlleisten 3.4, so that the grinding surfaces 1, 2 of these Mahlleisten 3.4 and the grooves 5,6 between them are formed.
  • the fiber suspension S to be grounded passes through the center of the stator 16 into the grinding gap between the two grinding sets 13, 14.
  • the fiber suspension S passes the cooperating grinding surfaces 1, 2 radially outward, accumulates in the adjoining annular space 10th
  • Mahlleisten 3,4, also called knife is generally approximately rectangular, but there are other forms.
  • the running between the grinding bars 3, 4 grooves 5,6 also have an approximately rectangular cross-section and serve as flow channels for the
  • the groove depth 12 is usually between 2 and 20 mm, preferably between 5 and 8 mm.
  • the grinding bars 4 of the stationary grinding surface 2 are straight and the inclination of the grinding bars 3 of the rotating grinding surface 1 to the radial axis 8 proceeding from the axis of rotation 7 increases to the outside.
  • the width of the Mahlleisten 3.4 radially outward preferably continuously increases, which increases the allowable edge load and thus the Mahl intricate.
  • the width of the Mahlleisten 3,4 is their Width radially inward in the range of 0.8 and 1, 7 mm, while the width is radially outside between 3 and 6 mm.
  • the inclination of the odd grinding strips 3 to the radial 8 inside is in the range between 5 and 15 ° and radially outside between 40 and 50 °.
  • the width of the grooves 6 of the non-rotating grinding surface 2 increases radially outward and is preferably radially inwardly between 2 and 4 mm and radially outside between 3 and 5 mm. This supports the already mentioned backflow of the fiber suspension S as far as possible inwards.
  • the odd grinding bars 3 can also be interrupted.
  • milling strips 3, 4 described hitherto extend radially approximately over the entire grinding surface 1, 2, they are limited in FIGS. 6 and 7 to a radial section of the grinding surface 1.
  • the odd grinding strips 3 are arranged in two annular rows arranged radially one behind the other. As can be seen in FIG. 7, an annular groove 18 can run between these rows. However, it may also be advantageous that the radial boundary of the grinding bars 3, 4 runs inclined relative to the circumferential direction of the rotating grinding surface 1, so that the groove 18 extending between the rows, as shown in FIG. 6, deviates from the ring shape.

Landscapes

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

Abstract

L'invention concerne un dispositif de broyage destiné à broyer des fibres cellulosiques (6) en suspension aqueuse entre deux surfaces de broyage (1, 2) formant une fente de broyage, mobiles l'une par rapport l'autre et dotées de baguettes de broyage (3, 4) et de rainures (5, 6) s'étendant entre ces dernières. Au moins une surface de broyage (1) tourne autour d'un axe de rotation (7) passant verticalement par le centre de la surface de broyage (1), les baguettes de broyage (3, 4) s'étendant, selon une composante de direction essentielle, radialement par rapport à l'axe de rotation (7). L'objectif de l'invention consiste à obtenir un broyage efficace et une usure aussi réduite que possible, également en cas de variation de la proportion de fibres longues. A cet effet, la largeur des baguettes de broyage (3, 4) d'au moins une surface de broyage (1, 2) augmente radialement vers l'extérieur et/ou les baguettes de broyage (4) d'une surface de broyage (2) s'étendent en ligne droite et l'inclinaison des baguettes de broyage (3) de l'autre surface de broyage (1) augmente vers l'extérieur en direction des radiales (8) partant de l'axe de rotation (7).
PCT/EP2011/053413 2010-04-01 2011-03-08 Dispositif de broyage WO2011120763A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010003582.3 2010-04-01
DE201010003582 DE102010003582A1 (de) 2010-04-01 2010-04-01 Mahlanordnung

Publications (1)

Publication Number Publication Date
WO2011120763A1 true WO2011120763A1 (fr) 2011-10-06

Family

ID=44519909

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/053413 WO2011120763A1 (fr) 2010-04-01 2011-03-08 Dispositif de broyage

Country Status (2)

Country Link
DE (1) DE102010003582A1 (fr)
WO (1) WO2011120763A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021229153A1 (fr) * 2020-05-14 2021-11-18 Valmet Technologies Oy Élément de lame pour raffineur

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI126263B (en) * 2014-10-29 2016-09-15 Valmet Technologies Inc Blade element for refiner and refiner for grinding fibrous material

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5425508A (en) * 1994-02-17 1995-06-20 Beloit Technologies, Inc. High flow, low intensity plate for disc refiner
WO2004004909A1 (fr) * 2002-07-02 2004-01-15 Metso Paper Inc Defibrage de materiau renfermant de la lignocellulose: surface de raffinage pour raffineur
DE102008039001A1 (de) * 2008-08-21 2010-02-25 Voith Patent Gmbh Verfahren zur Mahlung von wässrig suspendierten Zellstofffasern sowie Mahlgarnitur zu seiner Durchführung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5425508A (en) * 1994-02-17 1995-06-20 Beloit Technologies, Inc. High flow, low intensity plate for disc refiner
WO2004004909A1 (fr) * 2002-07-02 2004-01-15 Metso Paper Inc Defibrage de materiau renfermant de la lignocellulose: surface de raffinage pour raffineur
DE102008039001A1 (de) * 2008-08-21 2010-02-25 Voith Patent Gmbh Verfahren zur Mahlung von wässrig suspendierten Zellstofffasern sowie Mahlgarnitur zu seiner Durchführung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021229153A1 (fr) * 2020-05-14 2021-11-18 Valmet Technologies Oy Élément de lame pour raffineur

Also Published As

Publication number Publication date
DE102010003582A1 (de) 2011-10-06

Similar Documents

Publication Publication Date Title
DE202014010374U1 (de) Vorrichtung zur Faserstoffbehandlung
EP1749922B1 (fr) Dispositif pour le traitement d'une suspension fibreuse et segment de disque pour l'usage dans un tel dispositif
EP3256640B1 (fr) Garniture de raffinage
WO2017089022A1 (fr) Garniture de raffinage
WO2016169672A1 (fr) Monture de traitement pour le traitement d'une matière fibreuse en suspension aqueuse
WO2011120763A1 (fr) Dispositif de broyage
DE102019104105B3 (de) Mahlgarnitursegment
WO2017001359A1 (fr) Dispositif de dispersion
EP3899135B1 (fr) Dispositif de broyage
AT16791U1 (de) Konische Mahlanordnung
WO2011107339A1 (fr) Procédé de broyage de fibres de cellulose dans une suspension aqueuse et garnitures de broyage pour sa mise en œuvre
DE102015108230A1 (de) Klingenelement für einen Refiner
DE3910412A1 (de) Vorrichtung zum auftrennen einer zellulosefaserbrei-suspension
WO2009097963A2 (fr) Dispositif de traitement de matières fibreuses pour la production de papier ou de carton
DE102008039003A1 (de) Verfahren zur Mahlung von wässrig suspendierten Zellstofffasern sowie Mahlgarnitur zu seiner Durchführung
WO2011069703A2 (fr) Appareil de dispersion iii
WO2018234167A1 (fr) Dispositif de traitement de fibres
WO2011069704A2 (fr) Appareil de dispersion iv
WO2011098147A1 (fr) Procédé pour broyer des fibres cellulosiques en suspension aqueuse et unité de broyage pour sa mise en oeuvre
EP4065766A1 (fr) Appareil de traitement de matériau fibreux
WO2012156189A2 (fr) Broyage de fibres longues
DE202009018666U1 (de) Disperger IV
EP4217535A1 (fr) Segment de plaque de raffineur
AT13827U1 (de) Siebvorrichtung
DE102010029752A1 (de) Verfahren zur Mahlung von wässrig suspendierten Zellstofffasern sowie Mahlgarnitur zu seiner Durchführung

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11709071

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 11709071

Country of ref document: EP

Kind code of ref document: A1