EP3714097B1 - Commande du traitement d'une matière fibreuse - Google Patents

Commande du traitement d'une matière fibreuse Download PDF

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Publication number
EP3714097B1
EP3714097B1 EP18786284.2A EP18786284A EP3714097B1 EP 3714097 B1 EP3714097 B1 EP 3714097B1 EP 18786284 A EP18786284 A EP 18786284A EP 3714097 B1 EP3714097 B1 EP 3714097B1
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EP
European Patent Office
Prior art keywords
treatment
fibrous material
base plate
axial force
actuator
Prior art date
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Application number
EP18786284.2A
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German (de)
English (en)
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EP3714097A1 (fr
Inventor
Martin Heim
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
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Voith Patent GmbH
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Publication date
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Publication of EP3714097A1 publication Critical patent/EP3714097A1/fr
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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
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • D21D1/30—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
    • D21D1/002—Control devices
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems
    • D21G9/0018—Paper-making control systems controlling the stock preparation

Definitions

  • the invention relates to a method for controlling or regulating a device for treating fibrous material at least partially on the basis of its drive power, wherein the device has a housing in which at least a first treatment tool and a second treatment tool are arranged, the treatment tools are each fastened to a base plate, have a rotationally symmetrical shape, are arranged coaxially to one another, rotate relative to one another about a common axis and delimit a treatment gap through which the fibrous material flows, the gap width of which can be changed via an axial displacement of at least one base plate of a treatment tool.
  • the invention also relates to a device for treating fibrous material with a housing in which at least a first treatment tool and a second treatment tool are arranged, the treatment tools are each fastened to a base plate, have a rotationally symmetrical shape, are arranged coaxially to one another, rotate relative to one another about a common axis and delimit a treatment gap through which the fibrous material flows, the gap width of which can be changed by means of an actuator via an axial displacement of at least one base plate of a treatment tool, in order to carry out the method.
  • Devices of the above-mentioned type are used, for example, to improve the quality of pulp, TMP or fiber.
  • pulp fibers i.e. fresh pulp and/or waste paper fibers
  • the treatment surfaces are formed by replaceable fittings screwed to the corresponding base plate due to the relatively rapid wear.
  • the grinding sets In order to achieve the desired fibre properties, in particular the degree of freeness, the grinding sets must be adapted as best as possible to the fibre material to be treated, also in order to prevent excessive wear of the sets.
  • the object of the invention is to enable safe and efficient operation of these devices using the simplest possible means.
  • the object was achieved by measuring the axial force acting on the movable base plate and the width of the treatment gap at least controlled or regulated as a function of drive power and axial force.
  • the flow of the fiber suspension in the treatment gap occurs essentially in the radial direction, although due to the rotation there is also a directional component in the rotational direction and, in the case of a conical arrangement of the treatment tools, in the axial direction.
  • the gap width is set so that an optimal axial force is achieved for the fiber material to be treated.
  • the optimal axial force can be determined for a specific fiber material during operation by changing the gap width, measuring the axial force and recording the effects on the fiber material parameters after treatment.
  • a reduced gap width leads to increased elongation of the fiber material and an increased gap width leads to increased fibrillation of the fiber material.
  • a change in the ratio between drive power and axial force can be used to determine whether the parameters of the fiber material have changed.
  • the machine control system can then make the necessary adjustments on this basis.
  • the gap width of the device in particular should be readjusted.
  • the device it is essential that it has a measuring unit for detecting the axial force acting on the movable base plate.
  • the invention is particularly suitable for devices designed as refiners for grinding or as dispersers for dispersing the fiber material.
  • the treatment tool and base plate can also be made as a single piece.
  • the measuring unit can be arranged on this shaft and/or between the actuator and the shaft and/or in the actuator.
  • the measuring unit can be arranged in the actuator and/or between the actuator and the base plate.
  • the actuators can be hydraulic, pneumatic, electrical or manual.
  • Well-known force gauges can also be used for the measuring units.
  • the total drive power consumed by the device consists of the idle power and the specific drive power of the device relevant to the desired treatment intensity.
  • the paper pulp 1 is fed directly into the central, ie radially inner area of the refiner set, which is separated by the two treatment tools 3,4 is formed, pressed.
  • While one treatment tool 3 does not rotate and is thus designed as a stator, the other treatment tool 4 is rotatably mounted in the housing 2 of the refiner.
  • the treatment tools 3, 4 each have a rotationally symmetrical shape, wherein the two circular grinding surfaces are arranged parallel to each other and the gap distance between them can be adjusted via an axial displacement of the non-rotating treatment tool 3.
  • the rotating grinding surface is moved in the direction of rotation by a shaft 10 which is rotatably mounted in the housing 2.
  • This shaft 10 is driven by a drive which is also present in the housing 2.
  • the fiber suspension 1 to be ground passes through an inlet through the center into the grinding gap 6 between the grinding surfaces of the two treatment tools 3,4.
  • the fiber suspension 1 passes the interacting grinding surfaces radially outwards and leaves the adjacent annular space through an outlet.
  • Both grinding surfaces are each formed by several grinding plates, each of which extends over a circumferential segment of the corresponding grinding surface.
  • the grinding plates When arranged next to each other in the circumferential direction, the grinding plates form a continuous grinding surface.
  • the grinding plates and thus also the grinding surfaces are usually formed by a plurality of essentially radially extending grinding bars 9 and grooves in between.
  • the treatment tools 3, 4 are attached to corresponding base plates 7, 8.
  • the treatment gap 6 can not only run vertically but also inclined to the rotation axis 5, as in cone refiners.
  • the axial force F acting directly from the actuator 11 on the displaceable base plate 7 is measured by a measuring unit 12, for example in the form of a pressure cell arranged between the actuator 11 and the base plate 7, and the gap width between the treatment tools 3, 4 is regulated at least as a function of drive power and axial force F.
  • the treatment intensity of the fiber material 1, i.e. here the grinding performance, is essentially determined by the specific drive power of the device.
  • the width of the treatment gap 6 is adjusted so that an optimal axial force F is obtained which corresponds to the fiber material 1 to be treated and the desired parameters of the fiber material 1 after the treatment.
  • the machine control can measure the parameters of the fiber material or the fiber web produced from it, preferably online, and change the axial force F until the parameters reach an optimum.
  • the rotating base plate 4 can be designed to be axially displaceable.
  • the actuator 11 would act on the shaft 10 connected to the rotating base plate in order to change the width of the treatment gap 6.
  • the measuring unit 12 could be arranged between the shaft 10 and the actuator 11.

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  • Paper (AREA)

Claims (10)

  1. Procédé de commande ou de régulation d'un dispositif de traitement de matière fibreuse (1) au moins en partie sur la base de sa puissance d'entraînement, le dispositif possédant un boîtier (2) dans lequel sont agencés au moins un premier outil de traitement (3) et un deuxième outil de traitement (4), les outils de traitement (3, 4) étant fixés chacun sur une plaque de base (7, 8), ayant une forme à symétrie de révolution, étant agencés coaxialement l'un à l'autre, tournant l'un par rapport à l'autre autour d'un axe commun (5) et délimitant une fente de traitement (6) traversée par la matière fibreuse (1), dont la largeur de fente peut être modifiée par l'intermédiaire d'un déplacement axial d'au moins une plaque de base (7, 8) d'un outil de traitement (3, 4), caractérisé en ce que la force axiale (F) agissant sur la plaque de base déplaçable est mesurée et la largeur de la fente de traitement (6) est commandée ou réglée au moins en fonction de la puissance d'entraînement et de la force axiale (F).
  2. Procédé selon la revendication 1, caractérisé en ce que la largeur de la fente de traitement (6) est ajustée de manière à obtenir une force axiale (F) optimale correspondant à la matière fibreuse (1) à traiter.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la matière fibreuse (1) est broyée dans le dispositif, la largeur de la fente de traitement (6) étant réduite pour renforcer l'allongement de la matière fibreuse (1) ou agrandie pour renforcer la fibrillation de la matière fibreuse (1).
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'en cas de modification du rapport entre la puissance d'entraînement et la force axiale (F), on conclut à une modification des paramètres de la matière fibreuse (1).
  5. Procédé selon la revendication 4, caractérisé en ce que la largeur de la fente de traitement (6) est réajustée lors d'un changement des paramètres de la matière fibreuse (1).
  6. Dispositif pour le traitement de matière fibreuse (1) avec un boîtier (2), dans lequel sont agencés au moins un premier outil de traitement (3) et un deuxième outil de traitement (4), les outils de traitement (3, 4) étant fixés chacun sur une plaque de base (7, 8), ayant une forme à symétrie de révolution, étant agencés coaxialement l'un par rapport à l'autre, tournant l'un par rapport à l'autre autour d'un axe commun (5) et délimitant une fente de traitement (6) traversée par la matière fibreuse (1), dont la largeur de fente peut être modifiée au moyen d'un organe de réglage (11) par l'intermédiaire d'un déplacement axial d'au moins une plaque de base (7, 8) d'un outil de traitement (3, 4), pour la mise en œuvre du procédé selon l'une quelconque des revendications précédentes, celui-ci possédant une unité de mesure (12) pour détecter la force axiale (F) agissant sur la plaque de base déplaçable (7, 8).
  7. Dispositif selon la revendication 6, dans lequel la force axiale (F) est transmise par l'organe de réglage (11) à la plaque de base (7, 8) par l'intermédiaire d'un arbre (10) déplaçable axialement, et l'unité de mesure (12) est agencée sur cet arbre (10) et/ou entre l'organe de réglage (11) et l'arbre (10) et/ou dans l'organe de réglage (11).
  8. Dispositif selon la revendication 6, dans lequel la force axiale (F) est transmise par l'organe de réglage (11) à la plaque de base (7, 8) et l'unité de mesure (12) est agencée dans l'organe de réglage (11) et/ou entre l'organe de réglage (11) et la plaque de base (7, 8).
  9. Dispositif selon l'une quelconque des revendications 6 à 8, dans lequel celui-ci est réalisé sous forme de raffineur pour le broyage de la matière fibreuse (1).
  10. Dispositif selon l'une quelconque des revendications 6 à 8, dans lequel celui-ci est réalisé sous forme de disperseur pour la dispersion de la matière fibreuse (1).
EP18786284.2A 2017-11-24 2018-10-11 Commande du traitement d'une matière fibreuse Active EP3714097B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017127771.4A DE102017127771A1 (de) 2017-11-24 2017-11-24 Steuerung der Faserstoffbehandlung
PCT/EP2018/077700 WO2019101425A1 (fr) 2017-11-24 2018-10-11 Commande du traitement d'une matière fibreuse

Publications (2)

Publication Number Publication Date
EP3714097A1 EP3714097A1 (fr) 2020-09-30
EP3714097B1 true EP3714097B1 (fr) 2024-07-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP18786284.2A Active EP3714097B1 (fr) 2017-11-24 2018-10-11 Commande du traitement d'une matière fibreuse

Country Status (4)

Country Link
EP (1) EP3714097B1 (fr)
CN (1) CN111373090B (fr)
DE (1) DE102017127771A1 (fr)
WO (1) WO2019101425A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020122645A1 (de) 2020-08-31 2022-03-03 Voith Patent Gmbh Steuerung einer Faserbehandlungsvorrichtung
EP4222308A1 (fr) * 2020-09-30 2023-08-09 Voith Patent GmbH Commande du traitement d'un matériau fibreux

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4184204A (en) 1978-10-06 1980-01-15 Beloit Corporation Programmable refiner controller
US4661911A (en) * 1985-01-31 1987-04-28 Beloit Corporation Adaptive constant refiner intensity control
US4986480A (en) * 1989-06-29 1991-01-22 Kamyr Ab Method and apparatus for feeding a conical refiner
US6324490B1 (en) * 1999-01-25 2001-11-27 J&L Fiber Services, Inc. Monitoring system and method for a fiber processing apparatus
CA2300737C (fr) * 2000-03-15 2008-02-19 Queen's University At Kingston Capteur de force pour raffineur
EP1377410A4 (fr) 2001-03-12 2008-03-19 Norwalk Ind Components Llc Methodes de diagnostic et de commande d'une defibreuse
EP2562307A1 (fr) * 2011-08-26 2013-02-27 Officine Airaghi Srl Pièces de rechange pour raffineurs à disques pour la production de papier
SE537929C2 (sv) * 2014-02-11 2015-11-24 Daprox Ab Raffinöranordning och ett förfarande för raffinering av cellulosamaterial
CN104459089B (zh) * 2014-12-12 2016-05-11 东北大学 一种高浓磨浆系统游离度的软测量方法

Also Published As

Publication number Publication date
DE102017127771A1 (de) 2019-05-29
CN111373090B (zh) 2022-04-29
CN111373090A (zh) 2020-07-03
EP3714097A1 (fr) 2020-09-30
WO2019101425A1 (fr) 2019-05-31

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