EP0936302B1 - 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
EP0936302B1
EP0936302B1 EP98124785A EP98124785A EP0936302B1 EP 0936302 B1 EP0936302 B1 EP 0936302B1 EP 98124785 A EP98124785 A EP 98124785A EP 98124785 A EP98124785 A EP 98124785A EP 0936302 B1 EP0936302 B1 EP 0936302B1
Authority
EP
European Patent Office
Prior art keywords
eccentric shaft
partition
lip
dividing element
feeding
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
EP98124785A
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German (de)
English (en)
Other versions
EP0936302A3 (fr
EP0936302A2 (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 EP0936302A2 publication Critical patent/EP0936302A2/fr
Publication of EP0936302A3 publication Critical patent/EP0936302A3/fr
Application granted granted Critical
Publication of EP0936302B1 publication Critical patent/EP0936302B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a device for supplying a Fibrous suspension on a drainage device, in particular for a tissue machine, according to the preamble of claim 1.
  • 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.
  • two or 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.
  • Such a headbox is e.g. in DE 37 04 462 (SULZER-ESCHER-WYSS) revealed.
  • a swivel partition and an adjustable one Lip provided.
  • the setting provided by the However, the mechanism is only very imprecise.
  • US 2,615,374 also describes a so-called headbox with free outlet of the fiber suspension on a sieve, being between sieve and flexible outlet plate there is an outlet gap.
  • the outlet plate is on a support wall assembled, the entire support wall using an eccentric both (from the sieve surface) as well as in the horizontal direction can be swung.
  • the actual setting of the outlet gap takes place by means of a conventional setting device and is accordingly imprecise.
  • such a headbox not be used with a tissue machine where the Fibrous suspension is injected between two sieves.
  • the aim of the invention is therefore the scope and Control options for headboxes, especially for one Tissue machine, improve.
  • the invention is characterized by the features of the characterizing part of claim 1 for setting the Height of the at least one outlet gap between a minimum and The maximum value is an eccentric shaft.
  • the upper lip and the lower lip can each be pivoted about a joint by means of an eccentric.
  • the setting of upper and / or Depending on the version, the lower lip enables two or two Multilayer headbox the optimal conditions for regulating the Flow speed of the individual layers.
  • 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 embodiment 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.
  • An advantageous development of the invention for a two-layer or Multilayer headbox is characterized in that for separation of the individual areas one or more one-piece separating elements formed from partition and lamella tip with wedge-shaped (s) Blade tip (s) made of steel is or are. So it is possible stable separation and therefore constant adjustment of the outlet gap heights to achieve even with different inlet pressures that a difference in speed between the individual suspension flows can be adjusted.
  • a favorable embodiment of the invention is characterized in that that the slat tip (s) by means of a tie rod against the partition are biased to the feeder. This makes it particularly stable and this enables exact adjustment of the outlet gap heights.
  • FIG. 1 shows a two-layer headbox according to the invention
  • FIG. 1a a detail from FIG. 1
  • FIG. 2 a three-layer headbox
  • FIG. 2a a detail 2
  • FIG. 3 shows a section along line III-III in FIG. 2 represents.
  • 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.
  • At the outlet end of the partition 8 there is a one-piece, Wedge-shaped lamellar tip 12 made of stainless steel, which by means of tie rods 13 is biased against the partition 8.
  • the partition 8 and the Lamellar tip 12 form a solid in the assembled state Separating element between the two nozzle spaces 3, 4.
  • This pivoting movement is carried out by an eccentric shaft 16, 16 ', across the machine width, at regular intervals in bearings 17, 17 'are supported on the rigid cover plates 20, 20' of the device.
  • the eccentricity e of the shafts enables the gap heights to be adjusted a or b between a minimum and maximum value.
  • 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 at the same time into the device via three channels 1 transversely to the machine direction, then the direction of flow 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.
  • 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 At the outlet end of the Partition 6 is also 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 one 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 Distances in bearings 19 supported on the rigid rear wall 23 of the device are.
  • 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 1, 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. 1 and analogously 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 can e.g. other types of execution of the middle slat be provided.

Landscapes

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

Claims (5)

  1. Dispositif pour amener une suspension de pâte vers une installation de déshydratation, surtout une machine à papier d'ouate, ayant au moins un passage (1) pour l'alimentation de la suspension de pâte, conduisant par au moins une aire de génération de turbulence (2) à une chambre à buses appropriée (3, 4), délimitée par une lèvre supérieure (18) et une lèvre inférieure (18') et divisée par au moins un élément séparateur formé par la cloison (8) et la pointe de lamelle (12) de façon à créer au moins une fente de décharge entre la lèvre supérieure (18) et/ou la lèvre inférieure (18') et l'élément séparateur, caractérisé en ce que l'arbre d'excentrique (15, 16, 16') est prévu pour ajuster la hauteur (a, b) d'au moins de la fente unique de décharge entre la valeur minimum et la valeur maximum, la lèvre supérieure (18) pivotant moyennant l'arbre d'excentrique (16) autour d'une charnière (14) et la lèvre supérieure (18') pivotant moyennant l'arbre d'excentrique (16') autour d'une charnière (14').
  2. Dispositif selon la revendication 1, caractérisé en ce que l'arbre d'excentrique (15, 16, 16') est appuyé à plusieurs points sur la largeur de la machine.
  3. Dispositif selon la revendication 2, caractérisé en ce que l'arbre d'excentrique (15, 16, 16') est appuyé à des distances égales.
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que l'arbre d'excentrique (15, 16, 16') est connecté à un moteur à engrenage (22).
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que un ou plusieurs éléments séparateurs comprenant une cloison (6, 8) et une pointe de lamelle (12, 12'), avec pointe(s) de lamelle cunéiforme(s) (12, 12') en une pièce, en acier, sont prévu(s) pour des caisses de tête à deux ou plusieurs couches pour séparer les sections individuelles, les pointe(s) de lamelles (12, 12') étant précontrainte(s) par rapport à la cloison (6, 8) du dispositif d'alimentation et au moins un élément séparateur étant ajustable par l'arbre excentrique (15).
EP98124785A 1998-02-05 1998-12-29 Appareil pour l' alimentation d' une suspension de fibres sur un dispositif d' essorage Expired - Lifetime EP0936302B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0020798A AT406172B (de) 1998-02-05 1998-02-05 Vorrichtung zur zufuhr einer faserstoffsuspension auf eine entwässerungseinrichtung
AT20798 1998-02-05

Publications (3)

Publication Number Publication Date
EP0936302A2 EP0936302A2 (fr) 1999-08-18
EP0936302A3 EP0936302A3 (fr) 2000-02-23
EP0936302B1 true EP0936302B1 (fr) 2004-04-21

Family

ID=3484343

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98124785A Expired - Lifetime EP0936302B1 (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 (2) US6319366B1 (fr)
EP (1) EP0936302B1 (fr)
AT (1) AT406172B (fr)
BR (1) BR9900536B1 (fr)
DE (1) DE59811238D1 (fr)
ES (1) ES2218752T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10106684A1 (de) * 2001-02-14 2002-08-29 Voith Paper Patent Gmbh Lamelle eines Stoffauflaufs einer Papier-, Karton- oder Tissuemaschine
DE10159412A1 (de) * 2001-12-04 2003-06-12 Voith Paper Patent Gmbh Stoffauflauf
DE102008000175A1 (de) * 2008-01-30 2009-08-06 Voith Patent Gmbh Mehrschichtenstoffauflauf für eine Maschine zur Herstellung einer mehrschichtigen Faserstoffbahn
DE102008043145A1 (de) * 2008-10-24 2010-04-29 Voith Patent Gmbh Zweischichtenstoffauflauf für eine Maschine zur Herstellung einer zweischichtigen Faserstoffbahn
EP2199459A1 (fr) * 2008-12-16 2010-06-23 Voith Patent GmbH Système de formation de feuille pour une machine destinée à la fabrication d'une bande de matière fibreuse multicouche

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2005839A (en) * 1933-01-26 1935-06-25 Downingtown Mfg Co Cylinder machine
US2615374A (en) * 1948-10-04 1952-10-28 Dominion Eng Works Ltd Slice assembly for papermaking machines
US3556935A (en) * 1968-04-03 1971-01-19 Procter & Gamble Papermaking headbox with adjustable hydraulic nozzle and slice
CH564639A5 (fr) * 1973-04-17 1975-07-31 Escher Wyss Gmbh
SE7707981L (sv) * 1976-12-02 1978-06-03 Ahlstroem Dev Gmbh Anordning for paverkan av ett banformigt material
DE3010730C2 (de) * 1980-03-20 1983-01-05 J.M. Voith Gmbh, 7920 Heidenheim Stoffauflauf für eine Papiermaschine
AT377026B (de) * 1980-12-19 1985-01-25 Escher Wyss Gmbh Stoffauflauf fuer eine papiermaschine
FI78750B (fi) * 1982-07-20 1989-05-31 Escher Wyss Gmbh Flerskiktsinloppslaoda foer matande av pappersmassa till en vira.
DE3321406A1 (de) * 1983-06-09 1984-12-13 Escher Wyss Gmbh, 7980 Ravensburg Stoffauflauf fuer eine papiermaschine
DE3535849A1 (de) * 1985-10-08 1987-04-09 Voith Gmbh J M Stellvorrichtung fuer eine lippe eines papiermaschinen-stoffauflaufs
CH672515A5 (fr) * 1987-02-02 1989-11-30 Escher Wyss Gmbh
US4975151A (en) * 1989-02-17 1990-12-04 Process Automation Business Inc. Two-speed single lever stepper actuator
US4892623A (en) * 1989-02-17 1990-01-09 Process Automation Business, Inc. Two-speed stepper actuator
FI92230C (fi) * 1993-07-01 1994-10-10 Valmet Paper Machinery Inc Menetelmä monikerrosperälaatikon säädössä ja monikerrosperälaatikko
DE4440079C2 (de) * 1994-11-10 1997-10-02 Voith Sulzer Papiermasch Gmbh Mehrschichten-Stoffauflauf
US5578172A (en) * 1994-12-20 1996-11-26 Voith Sulzer Papiermaschinen Gmbh Slice beam support plate
DE19624052A1 (de) * 1996-06-17 1996-12-12 Voith Sulzer Papiermasch Gmbh Dreischichtenstoffauflauf
DE19652983A1 (de) * 1996-12-19 1997-05-28 Voith Sulzer Papiermasch Gmbh Trennelement eines Mehrschichtenstoffauflaufes
DE19652982A1 (de) * 1996-12-19 1997-05-22 Voith Sulzer Papiermasch Gmbh Lösbare Verbindungsvorrichtung zum Trennelement eines Mehrschichtenstoffauflaufes

Also Published As

Publication number Publication date
ES2218752T3 (es) 2004-11-16
EP0936302A3 (fr) 2000-02-23
DE59811238D1 (de) 2004-05-27
US6475345B2 (en) 2002-11-05
BR9900536A (pt) 2000-04-18
AT406172B (de) 2000-03-27
US20020060038A1 (en) 2002-05-23
US6319366B1 (en) 2001-11-20
BR9900536B1 (pt) 2009-05-05
ATA20798A (de) 1999-07-15
EP0936302A2 (fr) 1999-08-18

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