EP0936301B1 - Appareil pour l' alimentation d' une suspension de fibres sur un dispositif d' essorage - Google Patents

Appareil pour l' alimentation d' une suspension de fibres sur un dispositif d' essorage Download PDF

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Publication number
EP0936301B1
EP0936301B1 EP98124784A EP98124784A EP0936301B1 EP 0936301 B1 EP0936301 B1 EP 0936301B1 EP 98124784 A EP98124784 A EP 98124784A EP 98124784 A EP98124784 A EP 98124784A EP 0936301 B1 EP0936301 B1 EP 0936301B1
Authority
EP
European Patent Office
Prior art keywords
eccentric
tip
partition
adjustable
eccentric shaft
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.)
Expired - Lifetime
Application number
EP98124784A
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German (de)
English (en)
Other versions
EP0936301A2 (fr
EP0936301A3 (fr
Inventor
Wilhelm Dipl.-Ing. Mausser
Manfred Ing. Schmid
Walter Writzl
Rudolf Dipl.-Ing. Greimel
Harald Weigant
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.)
Andritz AG
Original Assignee
Andritz AG
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Filing date
Publication date
Application filed by Andritz AG filed Critical Andritz AG
Publication of EP0936301A2 publication Critical patent/EP0936301A2/fr
Publication of EP0936301A3 publication Critical patent/EP0936301A3/fr
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Publication of EP0936301B1 publication Critical patent/EP0936301B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • D21F1/028—Details of the nozzle section
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper
    • D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type
    • D21F9/006—Complete machines for making continuous webs of paper of the twin-wire type paper or board consisting of two or more layers

Definitions

  • the invention relates to a two-layer or multilayer headbox for Supplying a fiber suspension to a dewatering device, especially for a tissue machine with one or more Lamella tips to separate the individual areas, the Lamellar tips (n) as one-piece, wedge-shaped lamellar tip (s) (12, 12 ') is or are made of steel.
  • Such devices also called headbox, affect the Paper formation and thus the paper quality is essential.
  • Headboxes are a regulation of the flow rate of the fiber suspension practically only accessible via printing.
  • Multi-layer headboxes that affect the quality of the paper surface however, a different flow rate is possible, such as for different qualities of top and Bottom are required, not realizable.
  • DE 196 52 983 VOITH SULZER PAPIERMASCHINEN GMBH
  • a separating element a multi-layer headbox here in addition to one Bayonet connection between two components of the separating element in the obviously preferred embodiment yet another Tip component is provided. It is fastened in the housing probably analogous to DE 37 04 462 (SULZER-ESCHER-WYSS).
  • a swiveling partition and an adjustable lip are provided.
  • the aim of the invention is therefore the scope and To improve control options for headboxes.
  • the invention is therefore characterized in that the Lamella tip (s) by means of a tie rod against the partition of the Feed device are biased and the lamella tip (s) and the partition / walls form rigid separating element.
  • This makes it possible to have a stable one Separation and therefore constant adjustment of the outlet gap heights to achieve even with different inlet pressures, so that between a differential speed for the individual suspension flows can be adjusted. Due to the preload of the slat tip (s) a particularly stable and therefore exact setting of the Outlet gap heights possible.
  • a favorable embodiment of the invention is characterized in that that the distance from the lower lip and / or upper lip to the lamella tip is adjustable. This allows the slat tip to be fixed and very stable be carried out.
  • An advantageous embodiment of the invention is characterized in that that to adjust the height of the outlet gap between a minimum and maximum value an eccentric shaft is provided.
  • a favorable further development of the invention is characterized in that that the upper lip is adjustable by means of an eccentric, and alternatively or the lower lip can also be adjustable by means of an eccentric.
  • the Adjustment of upper and / or lower lip enables depending on the version as a two- or multi-layer headbox the ideal conditions for Regulation of the flow rate of the individual layers.
  • a favorable embodiment of the invention is characterized in that that a partition - slat tip unit adjustable by means of an eccentric is.
  • An advantageous embodiment of the invention is characterized in that that the eccentric shaft is supported several times over the machine width, the support can take place at regular intervals.
  • a favorable further development of the invention is characterized in that that the eccentric shaft is connected to a geared motor.
  • the outlet height can also be adjusted during the operation of the paper machine and thus the flow rate of the fiber suspension accordingly be adjusted or regulated.
  • FIG. 1 shows a two-layer headbox according to the invention
  • FIG. 1a a detail in Fig. 1
  • Fig. 2 shows a three-layer headbox
  • Fig. 2a shows a detail in Fig. 2
  • Fig. 3 shows a section along line III-III in Fig. 2.
  • Fig. 1 sets up a device for supplying fiber suspensions a drainage device, in particular for a tissue machine, in the form of a two-layer headbox.
  • the suspension fed simultaneously via two channels 1 across the machine direction, then the flow direction of the suspension is 90 degrees in Machine direction redirected.
  • the suspension through two turbulence generating chambers 2 into the nozzle spaces run out discharge chambers 3, 4, at the end of which Leaves device and strikes the drainage device.
  • the two nozzle spaces 3, 4 are separated by a wall 8, which means cannulated screws 9 is biased against the support body 10.
  • the construction is designed so that even with constant turning the eccentric shaft 16, 16 'by a drive 22, the upper lip 18th and the lower lip 18 'never in contact with the blade tip 12 come and thus no damage can occur.
  • Fig. 1a shows a detail of the outlet gap in Fig. 1. It is clearly the different size of the outlet gaps a (nozzle space 3) and b (Nozzle area 4) recognizable.
  • Fig. 2 now shows a three-layer headbox, the suspension Simultaneously via three channels 1 across the machine direction into the Vorrich then the flow direction of the suspension 90 degrees in the machine direction is redirected.
  • the suspension then flows through three turbulence generating chambers 2 in the nozzle chambers 3, 4, 5 at the end of which they leave the device and on the Dewatering machine. Here it is between two sieves 24, 24 ', which run around two rollers 25, 25', are injected.
  • the two nozzle spaces 4, 5 become analogous to the embodiment in FIG. 1 separated by a wall 8, at the end of which is a one-piece, wedge-shaped Blade tip 12 made of stainless steel.
  • the partition 8 and in the assembled state, the lamella tip 12 forms a firm, non-adjustable separating element between the two nozzle spaces 4, 5.
  • the two nozzle spaces 3, 4 are separated by a partition 6, which is rotatably mounted about an axis 7.
  • a partition 6 which is rotatably mounted about an axis 7.
  • a one-piece lamella tip 12 Stainless steel, which is prestressed against the partition 6 by means of tie rods 11 becomes.
  • the partition 6 and the lamella tip 12 thus form a rigid Separating element which, however, is pivoted as a whole about the axis of rotation 7 can be. This swivel movement is carried out by a Eccentric shaft 15 that is regular across the machine width
  • the eccentricity e makes it possible to set the outlet gap height c des Nozzle space 4 between a minimum and maximum value and one Fixation of the same.
  • the outlet gap heights a and b of the two nozzle chambers 3 and 5 can also be between a minimum and Maximum value can be set and fixed.
  • the upper lip 18 or lower lip 18 'pivoted about the joints 14, 14'. Is performed this pivoting movement by an eccentric shaft 16, 16 ', which on the Machine width at regular intervals in bearings 17, 17 'on the rigid cover plates 20, 20 'of the device are supported.
  • the eccentricity e of the shafts 16, 16 ' enables the gap heights a to be adjusted and b between a minimum and maximum value.
  • the construction is designed so that even with constant turning the eccentric shafts 16, 16 'through a drive 22 the upper lip 18 and the lower lip 18 'never in contact with the lamella tips 12, 12 'come and thus no damage can occur. This also applies to all positions of the movable partition 6 Blade tip 12 '.
  • Fig. 2a shows a detail of the outlet gap in Fig. 2. You can see the different settings of the outlet gap heights a (nozzle area 3), b (nozzle area 5) and c (nozzle area 4).
  • FIG. 3 shows a section along line III-III in FIG. 2.
  • the eccentric shaft 16 is shown, the multiple over the Machine width is supported in bearings 17.
  • the invention is not restricted to the examples shown. It other types of lip adjustment can also be provided.

Landscapes

  • Paper (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (9)

  1. Caisse de tête à deux ou à plusieurs couches, pour l'alimentation d'une suspension de pâte vers une installation de déshydratation, surtout pour une machine à papier tissu, ayant une ou plusieurs cloisons avec une pointe de lamelle chacune pour séparation des aires à buses individuelles (3, 4, 5), la ou les pointes de lamelle étant désignée(s) comme pointe(s) de lamelle cunéiforme(s) en une pièce (12, 12') en acier, caractérisée en ce que la ou les pointes de lamelle (12, 12') est/sont précontrainte(s) par rapport à la cloison (6, 8) concernée moyennant un tirant (11, 13) et que la ou les pointes de lamelle et la ou les cloisons forme(nt), de cette façon, un élément de séparation rigide.
  2. Dispositif selon la revendication 1, caractérisé en ce que la distance de la lèvre inférieure (18') et/ou supérieure (18) à la pointe de lamelle (12, 12') est ajustable.
  3. Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce qu'un arbre d'excentrique (15, 16, 16') est prévu pour ajuster la fente de règle entre une limite minimale et une limite maximale.
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que la lèvre supérieure (18) est ajustable moyennant un excentrique (16).
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que la lèvre inférieure (18') est ajustable moyennant un excentrique (16').
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que l'unité de cloison (6) - pointe de lamelle (12') est ajustable moyennant un excentrique (15).
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que l'arbre d'excentrique (15, 16, 16') est appuyé à plusieurs points à travers la largeur de la machine.
  8. Dispositif selon la revendication 7, caractérisé en ce que l'arbre d'excentrique (15, 16, 16') est appuyé à des distances égales.
  9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que l'arbre d'excentrique (15, 16, 16') est connecté à un moteur à engrenage (22).
EP98124784A 1998-02-05 1998-12-29 Appareil pour l' alimentation d' une suspension de fibres sur un dispositif d' essorage Expired - Lifetime EP0936301B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0020698A AT406171B (de) 1998-02-05 1998-02-05 Vorrichtung zur zufuhr einer faserstoffsuspension auf eine entwässerungseinrichtung
AT20698 1998-02-05

Publications (3)

Publication Number Publication Date
EP0936301A2 EP0936301A2 (fr) 1999-08-18
EP0936301A3 EP0936301A3 (fr) 2000-02-23
EP0936301B1 true EP0936301B1 (fr) 2003-11-26

Family

ID=3484304

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98124784A Expired - Lifetime EP0936301B1 (fr) 1998-02-05 1998-12-29 Appareil pour l' alimentation d' une suspension de fibres sur un dispositif d' essorage

Country Status (6)

Country Link
US (1) US6368464B1 (fr)
EP (1) EP0936301B1 (fr)
AT (1) AT406171B (fr)
BR (1) BR9900531A (fr)
DE (1) DE59810270D1 (fr)
ES (1) ES2210654T3 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2615374A (en) * 1948-10-04 1952-10-28 Dominion Eng Works Ltd Slice assembly for papermaking machines
FI772145A (fi) * 1976-12-02 1978-06-03 Ahlstroem Dev Gmbh Anordning foer behandling av banformigt gods
FI58364C (fi) * 1977-07-13 1981-01-12 Tampella Oy Ab Matningsanordning foer en banformningsmaskin foer framstaellning av en tvao- eller flerskiktig fiberbana
DE3010730C2 (de) * 1980-03-20 1983-01-05 J.M. Voith Gmbh, 7920 Heidenheim Stoffauflauf für eine Papiermaschine
AT387410B (de) * 1983-06-09 1989-01-25 Escher Wyss Gmbh Stoffauflauf fuer eine papiermaschine
CH672515A5 (fr) * 1987-02-02 1989-11-30 Escher Wyss Gmbh
DE3807629A1 (de) * 1988-03-09 1989-09-21 Escher Wyss Gmbh Vorrichtung zum halten einer trennlamelle
ATE222971T1 (de) * 1994-04-29 2002-09-15 Voith Paper Patent Gmbh Mehrschichten-stoffauflauf
DE4440079C2 (de) * 1994-11-10 1997-10-02 Voith Sulzer Papiermasch Gmbh Mehrschichten-Stoffauflauf
DE19652982A1 (de) * 1996-12-19 1997-05-22 Voith Sulzer Papiermasch Gmbh Lösbare Verbindungsvorrichtung zum Trennelement eines Mehrschichtenstoffauflaufes
DE19652983A1 (de) * 1996-12-19 1997-05-28 Voith Sulzer Papiermasch Gmbh Trennelement eines Mehrschichtenstoffauflaufes

Also Published As

Publication number Publication date
EP0936301A2 (fr) 1999-08-18
US6368464B1 (en) 2002-04-09
ATA20698A (de) 1999-07-15
ES2210654T3 (es) 2004-07-01
AT406171B (de) 2000-03-27
BR9900531A (pt) 2000-02-22
EP0936301A3 (fr) 2000-02-23
DE59810270D1 (de) 2004-01-08

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