EP2893078B1 - Triage de fibres - Google Patents

Triage de fibres Download PDF

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Publication number
EP2893078B1
EP2893078B1 EP13748013.3A EP13748013A EP2893078B1 EP 2893078 B1 EP2893078 B1 EP 2893078B1 EP 13748013 A EP13748013 A EP 13748013A EP 2893078 B1 EP2893078 B1 EP 2893078B1
Authority
EP
European Patent Office
Prior art keywords
rotor blades
rotation
rotor
jet
plane
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.)
Not-in-force
Application number
EP13748013.3A
Other languages
German (de)
English (en)
Other versions
EP2893078A1 (fr
Inventor
Wolfgang Mannes
Simon FRICK
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 EP2893078A1 publication Critical patent/EP2893078A1/fr
Application granted granted Critical
Publication of EP2893078B1 publication Critical patent/EP2893078B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/18—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force
    • D21D5/22—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force in apparatus with a vertical axis
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D99/00—Subject matter not provided for in other groups of this subclass

Definitions

  • the invention relates to a device for removing long fibers from a Faserstoffsus p ension with at least one rotor with rotor blades, in which a jet of pulp suspension is directed to the rotor blades of the rotor, the jet direction with the rotation axis forms an angle of less than 45 °, the Rotor blades have a pointing in the direction of rotation wing edge and in the centrifugal region of the rotor blades collecting chambers for the thrown from the rotor blades, longer fibers are arranged
  • the fibers When a new pulp suspension is prepared from wood or when recovered paper is converted to a pulp suspension, the fibers generally have very different lengths. It may then be advantageous to separate the short cellulose fibers from long cellulose fibers, especially to be able to produce paper sheets with different qualities.
  • pulp suspension also extends to fibers containing process or wastewater, in which the recovery of the fibers is in the foreground.
  • the wing edge should support the collection, collection and centrifuging of the long fiber fraction into the catchment chambers. Therefore, it is advantageous if the rotor blades have a thickness between 0.2 and 2 mm, preferably between 0.3 and 0.7 mm, transverse to the plane of rotation.
  • the jet is directed onto the rotor blades via a jet accelerating jet. This acceleration causes a
  • the pulp suspension jet should extend at least predominantly, preferably exclusively only over a radially inner region of the rotor blades.
  • a comprehensive use of the rotor blades can be achieved, in particular, if the pulp suspension jet has an annular cross-section enclosing the axis of rotation of the rotor. It is advantageous if the annular pulp suspension jet has a ring thickness between 1 and 5 mm.
  • the gap between the nozzle housing 11 delimiting the jet 3 on the outside and the molded body 10 is increased. This is at the in FIG. 1 example shown simply by a displacement of the nozzle housing 11 against the flow direction possible. This is to prevent clogging of the gap with fibers.
  • annular pulp suspension jet 3 Since the annular pulp suspension jet 3 is arranged coaxially to the axis of rotation 4, results in an optimal and uniform effect.
  • fibers (long fiber fraction) extends around the rotor 1 in the corresponding spin area a catchment chamber 7. The rest of the pulp suspension passes through the rotor blades 2 and is collected and removed below in a drip pan 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Nonwoven Fabrics (AREA)

Claims (16)

  1. Dispositif pour enlever des fibres longues d'une suspension fibreuse comprenant au moins un rotor (1) avec des pales de rotor (2), dans lequel un jet (3) de la suspension fibreuse est orienté vers les pales de rotor (2) du rotor (1), le sens du jet forme avec l'axe de rotation (4) du rotor (1) un angle inférieur à 45°, les pales de rotor (2) présentent une arête de pale (6) tournée dans le sens de rotation (5) et des chambres de réception (7) pour les fibres plus longues évacuées par centrifugation par les pales de rotor (2) sont disposées dans la région de centrifugation des pales de rotor (2) caractérisé en ce que sur au moins 50 % de l'étendue radiale des pales de rotor (2), la distance entre les pales de rotor (2) est 5 à 10 fois plus grande que la largeur des pales de rotor (2) dans le plan de rotation (8).
  2. Dispositif selon la revendication 1, caractérisé en ce que la surface balayée par les pales de rotor (2) est 5 à 10 fois plus grande que la surface totale de toutes les pales de rotor (2) dans le plan de rotation (8).
  3. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'arête de pale (6) s'étend radialement vers l'extérieur de manière inclinée dans le sens opposé au sens de rotation (5) au moins dans une portion, de préférence au moins dans la portion la plus extérieure, par rapport à la radiale.
  4. Dispositif selon la revendication 3, caractérisé en ce que l'angle (9) entre la portion inclinée de l'arête de pale (6) et la radiale est compris entre 30 et 70°, de préférence entre 55 et 65°.
  5. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les pales de rotor (2) présentent, dans le plan de rotation (8), une largeur comprise entre 0,5 et 5 mm, de préférence comprise entre 1 et 3 mm.
  6. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la distance entre deux pales de rotor adjacentes (2) dans le plan de rotation (8) est comprise entre 5 et 25 mm, de préférence entre 10 et 15 mm.
  7. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les pales de rotor (2) ont une longueur comprise entre 5 et 30 mm, de préférence entre 10 et 20 mm.
  8. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les pales de rotor (2), transversalement au plan de rotation (8), présentent une épaisseur comprise entre 0,2 et 2 mm, de préférence entre 0,3 et 0,7mm.
  9. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les rayons (R) au niveau de l'arête de pale (6) sont supérieurs à 10 % de l'épaisseur (D) des pales de rotor (2) transversalement au plan de rotation (8).
  10. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la rugosité RA des pales de rotor (2) au moins dans la région de l'arête de pale (6) est inférieure à 1 µm.
  11. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les pales de rotor (2) présentent un profil plat s'étendant de préférence dans le sens de rotation (5).
  12. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les pales de rotor (2), en particulier leurs arêtes de pale (6), sont électropolies.
  13. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le jet (3) de suspension fibreuse est réalisé sous forme annulaire et est guidé coaxialement par rapport au rotor (1).
  14. Dispositif selon la revendication 13, caractérisé en ce que le sens du jet (3) de suspension fibreuse s'étend approximativement parallèlement à l'axe de rotation (4) du rotor (1) .
  15. Dispositif selon la revendication 13 ou 14, caractérisé en ce que le jet (3) est orienté vers les pales de rotor (2) par le biais d'une buse accélérant le jet (3).
  16. Dispositif selon la revendication 15, caractérisé en ce que la distance entre la buse et les pales de rotor (2) est inférieure à 20 mm, de préférence inférieure à 10 mm et en particulier inférieure à 5 mm.
EP13748013.3A 2012-09-10 2013-08-07 Triage de fibres Not-in-force EP2893078B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201210215964 DE102012215964A1 (de) 2012-09-10 2012-09-10 Fasersortierung
PCT/EP2013/066563 WO2014037178A1 (fr) 2012-09-10 2013-08-07 Triage de fibres

Publications (2)

Publication Number Publication Date
EP2893078A1 EP2893078A1 (fr) 2015-07-15
EP2893078B1 true EP2893078B1 (fr) 2016-12-14

Family

ID=48979735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13748013.3A Not-in-force EP2893078B1 (fr) 2012-09-10 2013-08-07 Triage de fibres

Country Status (4)

Country Link
EP (1) EP2893078B1 (fr)
CN (1) CN104619912B (fr)
DE (1) DE102012215964A1 (fr)
WO (1) WO2014037178A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018127914A1 (de) * 2018-11-08 2020-05-14 Voith Patent Gmbh Rotor für ein Heizaggregat

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE339165B (fr) 1969-04-22 1971-09-27 Calor & Sjoegren Ab
US4427541A (en) * 1982-04-28 1984-01-24 Wisconsin Alumni Research Foundation Method and apparatus for spray fractionation of particles in liquid suspension
SE444962B (sv) * 1985-07-08 1986-05-20 Kamyr Ab Anordning for avskiljning av i en fibermassa forekommande icke onskverda partiklar
WO1987006279A1 (fr) * 1986-04-11 1987-10-22 Beloit Corporation Separateur rotatif
CN1040254A (zh) * 1988-08-08 1990-03-07 高信光 分流叶轮及其旋转机械
US5104522A (en) * 1990-05-09 1992-04-14 Wisconsin Alumni Research Foundation Spray fractionation disks and method of using the same
AU1313001A (en) 1999-10-20 2001-04-30 Auckland Uniservices Limited A method of fibre separation
CN100492005C (zh) * 2003-11-14 2009-05-27 阿克佐诺贝尔公司 监测造纸工艺的方法和系统
BRPI0909854A2 (pt) 2008-08-11 2015-12-08 Voith Patent Gmbh "arranjo de fracionamento"
DE102011076518A1 (de) 2011-05-26 2012-11-29 Voith Patent Gmbh Fasersortierung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2014037178A1 (fr) 2014-03-13
EP2893078A1 (fr) 2015-07-15
CN104619912A (zh) 2015-05-13
DE102012215964A1 (de) 2014-03-13
CN104619912B (zh) 2017-06-09

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