EP0985068B1 - Device for dehydrating and washing suspensions of fibrous material - Google Patents

Device for dehydrating and washing suspensions of fibrous material Download PDF

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Publication number
EP0985068B1
EP0985068B1 EP98928237A EP98928237A EP0985068B1 EP 0985068 B1 EP0985068 B1 EP 0985068B1 EP 98928237 A EP98928237 A EP 98928237A EP 98928237 A EP98928237 A EP 98928237A EP 0985068 B1 EP0985068 B1 EP 0985068B1
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EP
European Patent Office
Prior art keywords
rolls
rollers
channels
discharge
washing
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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
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EP98928237A
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German (de)
French (fr)
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EP0985068A1 (en
Inventor
Johann Sbaschnigg
Wilhelm Mausser
Franz Petschauer
Johannes Kappel
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Andritz AG
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Andritz AG
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    • 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
    • D21D1/40—Washing the fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/20—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using rotary pressing members, other than worms or screws, e.g. rollers, rings, discs
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
    • D21C9/06—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents in filters ; Washing of concentrated pulp, e.g. pulp mats, on filtering surfaces
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
    • 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
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • D21F1/74—Pulp catching, de-watering, or recovering; Re-use of pulp-water using cylinders
    • D21F1/78—Pulp catching, de-watering, or recovering; Re-use of pulp-water using cylinders with pressure

Definitions

  • the invention relates to a device for dewatering and washing Fibrous suspensions with two counter-rotating rollers, one Stock feed and a stock take, the headbox on both Separate rollers and to discharge the filter mat below the gap a discharge screw (6) is arranged between the two rollers.
  • WO 96/06221 A shows a two-roll press with an approximately arranged in the range of the horizontal diameter Stock feed. This does not allow the maximum range of girth be used.
  • FR 2 006 772 A shows a drainage of a fiber suspension on a roller, two superimposed in Fig. 3 Rollers are shown. Here two identical devices are stacked. Due to the different geodetic height and the joint roll acceptance on the lower roll is strong different conditions of the two fiber mats before Compress in gap 59. The fiber mat has here on top and bottom very different properties especially in terms of on drainage and degree of washing. In addition, with this arrangement an additional take-off roller is required. Furthermore, the Headbox not in the lower area of the rollers, but essentially between 3 a.m. and 4 a.m.
  • the aim of the invention is therefore to avoid the disadvantages mentioned and a device for dewatering and washing fibrous materials create that ensures a high drainage performance with laundry and advantageously a slight rewetting of the fiber mat having.
  • the headbox in the lower Area of the rollers is provided, the axes of the rollers in one horizontal plane, the rollers channels for filtrate removal and Channels have inlets arranged counter to the direction of rotation can be much easier and more reliable the fibrous web) and the use of a large part of the scope of the two rollers and thus a high efficiency of the device can be achieved.
  • the channels for the filtrate discharge, which are in the rollers are arranged, large amounts of filtrate and wash water dissipate easily. It can therefore also be a particularly cheap one Displacement washing can be realized.
  • the against the Inlets arranged in the direction of rotation are largely one Prewetting of the fibrous mat prevented. This allows the Efficiency of the device can be increased even further.
  • a favorable embodiment of the invention is characterized in that that a baffle connects to the headbox, the distance to Roll surface decreases continuously. This baffle allows generate a continuously increasing pressure on the fiber suspension and thus carry out a particularly favorable drainage.
  • An advantageous embodiment of the invention is characterized in that that a washing zone is arranged in the upper region of the two rollers is. This can result in both good drainage and then one good washing can be achieved.
  • a favorable further development of the invention is characterized in that that the washing zones are separated on both sides by a divider are, or alternatively the wash water task as a common wash pond can be carried out jointly for both sides.
  • a favorable further development of the invention is characterized in that that the channels also have openings that are aligned with the in the direction of rotation previous channel.
  • a favorable embodiment of the invention is characterized in that that the roller surface is designed as a perforated plate with large holes is, the holes of the perforated plate having a diameter in the range of Can have 10 to 25 mm. With this construction, the Costs are reduced because fewer holes are required and also the production can be carried out easily and cheaply.
  • a favorable further development of the invention is characterized in that that the rollers are individually covered with sieves. Through these sieves a particularly favorable drainage can be achieved. in particular the combination of these screens, supported by the perforated plates compared to the previous versions with small ones Steel jacket of a roller surface drilled holes (1 to 1.5 mm diameter) special advantages, in particular a reduction the risk of incrustation and cheaper cleaning options represents. Furthermore, it is easy to change the sieves, whereby the rollers can be designed to be cantilevered.
  • rollers can be pressed against each other.
  • the rollers e.g. with hydraulic cylinders or others suitable units are pressed together.
  • the rollers can be with hydraulic cylinders or others suitable units are pressed together.
  • An advantageous embodiment of the invention is characterized in that that the tops can be folded down. This enables easy expansion the rollers without major disassembly work.
  • FIG. 1 is a schematic representation of the 2 according to the invention
  • FIG. 2 a detailed illustration
  • FIG. 3 a section X from Fig. 2
  • Fig. 4 is a view in the direction IV in Fig. 2 represents.
  • FIG. 1 shows a fiber scrubber 1 according to the invention Dewatering rollers 2, 3, the assigned feed 4.5 and their pulping screw 6.
  • the pulp suspension is through fabric feed lines 4.5 evenly over the length of the rollers 2,3 fed at the lowest position.
  • the supply can be between the 5 o'clock and 9 o'clock positions. This can be a much larger part of the circumference of the rollers 2, 3 can be used.
  • the suspension is further in the guide plates 7,8 with the surfaces of the rollers 2, 3 formed areas 7 ', 8', the Distance of the guide plates 7.8 to the surface of the rollers 2.3 continuously decreases. This will result in a steady increase in pressure and a favorable drainage guaranteed with simultaneous formation of a fiber mat.
  • the washing liquid is fed to the washing zones 9 ", 10" via lines 9, 10 supplied, which are limited by sheets 9 ', 10'.
  • the distance of the Sheets 9 ', 10' can face the surface of the rollers 2, 3 in the direction of rotation DR1, Decrease DR2 continuously, so that here too an increasingly higher one Pressure for displacement washing is realized.
  • scrapers 11, 12 In the lower part of the Rollers 2, 3 are then provided for scrapers 11, 12 through which the Fibrous mat and in particular those on the surfaces of the rollers 2, 3 residues still adhering can be removed and into the discharge screw 6 fall into it.
  • In the lower part of the Rollers 2, 3 are spray nozzles for further cleaning of the surfaces 15,16 arranged.
  • Fig. 2 shows an analogous representation to Fig. 1, with the same parts same reference numerals. Supplementary here are in particular the hydraulic cylinders 17, 18 for mutual contact pressure Rollers 2,3 recognizable. Furthermore, the cylinders 19, 20 are for lifting off the Upper parts 13, 14 and the setting cylinders 21, 22 for the take-off scraper 11.12 recognizable. Bars are also shown in the upper area 23.24 for the operating personnel.
  • FIG. 3 now shows a section X from FIG. 2, in which the drainage and washing function is shown in more detail.
  • Fig. 3 shows specifically the channels 25 of the rollers 2, 3 through which the filtrate and Wash water can be removed. It is good here against the direction of rotation DR1, DR2 arranged inlets 26 can be seen, the Filtrate or the wash water flow takes place according to the arrows 27. The liquid is then discharged axially from these channels 25. in the the lower left part shows the variant with additional openings 28, through the filtrate in the previous direction of rotation DR1, DR2 Channels can flow. As the filtrate is already in these channels was partially discharged, the volume of the channels 25 for the Absorption of filtrate or wash water from previous channels 25 used and thus further reduced the tendency to rewet become.
  • FIG. 4 now shows the view according to arrow IV in FIG. 2. From this it can be seen that that for better distribution of the suspension supply over the length the rollers 2, 3 and a plurality of stock feed lines 4, 4 'and corresponding can be provided on the back 5.5 '(not shown). Likewise The bearings 29, 30 are recognizable for the shaft ends 31, 32 of the Roller 2 and the gear 34. The filtrate is in a tub collected below the rollers.
  • the invention is not limited to the variants shown, but rather the washing zone can also be designed as a washing pond.
  • the Wash water is fed here centrally, which divides up both fiber mats are done automatically.
  • the roller jackets also consist of drilled perforated sheets and without screen covering operate.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur Entwässerung und Wäsche von Faserstoffsuspensionen mit zwei gegensinnig drehenden Walzen, einer Stoffaufgabe und einer Stoffabnahme, wobei der Stoffauflauf an beiden Walzen getrennt und zum Austrag der Filtermatte unterhalb des Spaltes zwischen den beiden Walzen eine Austragsschnecke (6) angeordnet ist.The invention relates to a device for dewatering and washing Fibrous suspensions with two counter-rotating rollers, one Stock feed and a stock take, the headbox on both Separate rollers and to discharge the filter mat below the gap a discharge screw (6) is arranged between the two rollers.

Es sind derartige Anlagen bekannt, wobei diese eine seitliche Stoffaufgabe und eine nach unten verlaufende Formationszone aufweisen, in der eine Faserstoffmatte gebildet wird. Daran schließt gegebenenfalls eine Verdrängungs-Waschzone gefolgt von einem Preßnip an. Der Stoffaustrag erfolgt hier über den beiden Walzen in einer Repulper-Schnecke. Derartige Vorrichtungen weisen eine Reihe von Nachteilen auf, wobei insbesondere die Stoffabnahme kompliziert und störanfällig ist, da der Trog der Repulper-Schnecke gegen die Walzen gedichtet werden muß. Weiters wird nur etwa die Hälfte des Umfanges für die Entwässerung und Wäsche genutzt. Außerdem weisen derartige Vorrichtungen eine Neigung zur Verstopfung auf, da die Schwerkraft die Faserstoffmatte von den Walzen abzulösen versucht. Ein Betrieb ohne Waschwasser ist daher nicht möglich. Weiters sind aus der WO 96/06221 A und WO 96/18495 Vorrichtungen zur Entwässerung von Faserstoffsuspensionen bekannt, die mit umgekehrter Drehrichtung der Walzen gegenüber obig genannten Vorrichtungen arbeiten. Ein Einsatz dieser Vorrichtungen für die Wäsche ist jedoch nicht möglich. Die WO 96/06221 A zeigt weiters eine Zweiwalzenpresse mit einer etwa im Bereich des horizontalen Durchmessers angeordneten Stoffzufuhr. Dadurch kann nicht der maximale Bereich des Umfanges verwendet werden.Systems of this type are known, and this involves a lateral feed and have a downward formation zone, in which forms a fibrous mat. This may be followed a displacement wash zone followed by a press nip. The material discharge here takes place over the two rollers in a repulper screw. Such devices have a number of disadvantages, in particular the fabric removal is complicated and prone to failure because the trough the repulper screw must be sealed against the rollers. Furthermore is only about half of the circumference for drainage and washing used. In addition, such devices have a tendency to become blocked on because gravity will detach the fibrous mat from the rollers tries. Operation without wash water is therefore not possible. Furthermore, devices are known from WO 96/06221 A and WO 96/18495 known for dewatering fibrous suspensions with the reverse Direction of rotation of the rollers in relation to the above-mentioned devices work. Use of these devices for laundry is, however not possible. WO 96/06221 A also shows a two-roll press with an approximately arranged in the range of the horizontal diameter Stock feed. This does not allow the maximum range of girth be used.

Weiters zeigt die FR 2 006 772 A eine Entwässerung einer Faserstoffsuspension auf einer Walze, wobei in Fig. 3 zwei übereinanderliegende Walzen dargestellt sind. Hier werden zwei gleiche Apparate übereinandergestellt. Durch die unterschiedliche geodätische Höhe sowie durch die gemeinsame Walzenabnahme an der unteren Walze ergeben sich stark unterschiedliche Bedingungen der beiden Fasermatten vor dem Zusammenpressen in Spalt 59. Die Fasermatte hat daher hier auf Oberseite und Unterseite stark unterschiedliche Eigenschaften speziell in Hinblick auf Entwässerung und Waschgrad. Außerdem ist bei dieser Anordnung eine zusätzliche Abnahmewalze erforderlich. Weiters ist der Stoffauflauf nicht im unteren Bereich der Walzen, sondern im wesentlichen zwischen 3 Uhr und 4 Uhr-Position vorgesehen.Furthermore, FR 2 006 772 A shows a drainage of a fiber suspension on a roller, two superimposed in Fig. 3 Rollers are shown. Here two identical devices are stacked. Due to the different geodetic height and the joint roll acceptance on the lower roll is strong different conditions of the two fiber mats before Compress in gap 59. The fiber mat has here on top and bottom very different properties especially in terms of on drainage and degree of washing. In addition, with this arrangement an additional take-off roller is required. Furthermore, the Headbox not in the lower area of the rollers, but essentially between 3 a.m. and 4 a.m.

Ziel der Erfindung ist es daher die angeführten Nachteile zu vermeiden und eine Vorrichtung zur Entwässerung und Wäsche von Faserstoffen zu schaffen, die eine hohe Entwässerungsleistung mit Wäsche gewährleistet und vorteilhafterweise eine geringe Rückbefeuchtung der Faserstoffmatte aufweist.The aim of the invention is therefore to avoid the disadvantages mentioned and a device for dewatering and washing fibrous materials create that ensures a high drainage performance with laundry and advantageously a slight rewetting of the fiber mat having.

Dies erfolgt erfindungsgemäß dadurch, daß der Stoffauflauf im unteren Bereich der Walzen vorgesehen ist, die Achsen der Walzen in einer horizontalen Ebene liegen, die Walzen Kanäle zur Filtratabfuhr und die Kanäle gegen die Drehrichtung angeordnete Einlässe aufweisen Dadurch kann eine wesentlich einfachere und zuverlässigere Stoffabnahme (Abnahme der Faserstoffbahn) sowie die Nutzung eines Großteils des Umfanges der beiden Walzen und damit eine hohe Effizienz der Vorrichtung erreicht werden. Durch die Kanäle für die Filtratabfuhr, die in den Walzen angeordnet sind, lassen sich große Mengen von Filtrat und Waschwasser problemlos abführen. Es kann daher auch eine besonders günstige Verdrängungswäsche realisiert werden. Weiters wird durch die gegen die Drehrichtung angeordnete Einlässe in den Kanälen weitestgehend eine Rückbefeuchtung der Faserstoffmatte verhindert. Dadurch kann die Effizienz der Vorrichtung noch weiter gesteigert werden. This is done according to the invention in that the headbox in the lower Area of the rollers is provided, the axes of the rollers in one horizontal plane, the rollers channels for filtrate removal and Channels have inlets arranged counter to the direction of rotation can be much easier and more reliable the fibrous web) and the use of a large part of the scope of the two rollers and thus a high efficiency of the device can be achieved. Through the channels for the filtrate discharge, which are in the rollers are arranged, large amounts of filtrate and wash water dissipate easily. It can therefore also be a particularly cheap one Displacement washing can be realized. Furthermore, the against the Inlets arranged in the direction of rotation are largely one Prewetting of the fibrous mat prevented. This allows the Efficiency of the device can be increased even further.

Eine günstige Ausgestaltung der Erfindung ist dadurch gekennzeichnet, daß an den Stoffauflauf ein Leitblech anschließt, dessen Abstand zur Walzenoberfläche kontinuierlich abnimmt. Durch dieses Leitblech läßt sich ein kontinuierlich steigender Druck auf die Faserstoffsuspension erzeugen und somit eine besonders günstige Entwässerung durchführen.A favorable embodiment of the invention is characterized in that that a baffle connects to the headbox, the distance to Roll surface decreases continuously. This baffle allows generate a continuously increasing pressure on the fiber suspension and thus carry out a particularly favorable drainage.

Eine vorteilhafte Ausgestaltung der Erfindung ist dadurch gekennzeichnet, daß im oberen Bereich der beiden Walzen eine Waschzone angeordnet ist. Dadurch kann sowohl eine gute Entwässerung und anschließend eine gute Wäsche erzielt werden.An advantageous embodiment of the invention is characterized in that that a washing zone is arranged in the upper region of the two rollers is. This can result in both good drainage and then one good washing can be achieved.

Eine günstige Weiterbildung der Erfindung ist dadurch gekennzeichnet, daß die Waschzonen auf beiden Seiten durch ein Trennblech abgetrennt sind, oder alternativ die Waschwasseraufgabe als gemeinsamer Waschteich für beide Seiten gemeinsam ausgeführt werden kann. Durch diese Ausführungen läßt sich eine optimale Anpassung des Bereichs der Wäsche und eine optimale Ausnützung der Oberfläche der Walzen für Entwässerung und Wäsche erzielen.A favorable further development of the invention is characterized in that that the washing zones are separated on both sides by a divider are, or alternatively the wash water task as a common wash pond can be carried out jointly for both sides. Through this Executions can be an optimal adjustment of the range of Washing and optimal use of the surface of the rollers for Achieve drainage and washing.

Eine günstige Weiterbildung der Erfindung ist dadurch gekennzeichnet, daß die Kanäle zusätzlich Öffnungen aufweisen, die mit dem in Drehrichtung vorhergehenden Kanal in Verbindung stehen. Durch diese besondere Ausgestaltung ist eine noch bessere Filtrat- und Waschwasserabfuhr möglich, wodurch die Rückbefeuchtung weiter reduziert werden kann.A favorable further development of the invention is characterized in that that the channels also have openings that are aligned with the in the direction of rotation previous channel. Through this special design is an even better filtrate and wash water removal possible, which further reduces rewetting can be.

Eine günstige Ausgestaltung der Erfindung ist dadurch gekennzeichnet, daß die Walzenoberfläche als Lochblech mit großen Löchern ausgeführt ist, wobei die Löcher des Lochbleches einen Durchmesser im Bereich von 10 bis 25 mm aufweisen können. Durch diese Konstruktion können die Kosten gesenkt werden, da wesentlich weniger Löcher erforderlich sind und auch die Herstellung einfach und billiger durchgeführt werden kann. A favorable embodiment of the invention is characterized in that that the roller surface is designed as a perforated plate with large holes is, the holes of the perforated plate having a diameter in the range of Can have 10 to 25 mm. With this construction, the Costs are reduced because fewer holes are required and also the production can be carried out easily and cheaply.

Weiters ist die Gefahr einer Verkrustung wesentlich geringer und eine Reinigung der Löcher ist sogar während des Betriebs möglich.Furthermore, the risk of incrustation is significantly lower and one The holes can even be cleaned during operation.

Eine günstige Weiterbildung der Erfindung ist dadurch gekennzeichnet, daß die Walzen einzeln mit Sieben bespannt sind. Durch diese Siebe kann eine besonders günstige Entwässerung erreicht werden. insbesondere die Kombination dieser Siebe, die durch die Lochbleche unterstützt werden, bringt gegenüber den bisherigen Varianten mit kleinen in den Stahlmantel einer Walzenoberfläche gebohrten Löchern (1 bis 1,5 mm Durchmesser) besondere Vorteile, die insbesondere eine Verringerung der Gefahr einer Verkrustung und günstigere Reinigungsmöglichkeit darstellt. Weiters ist es einfach möglich die Siebe zu wechseln, wobei die Walzen kandileverbar ausgeführt sein können.A favorable further development of the invention is characterized in that that the rollers are individually covered with sieves. Through these sieves a particularly favorable drainage can be achieved. in particular the combination of these screens, supported by the perforated plates compared to the previous versions with small ones Steel jacket of a roller surface drilled holes (1 to 1.5 mm diameter) special advantages, in particular a reduction the risk of incrustation and cheaper cleaning options represents. Furthermore, it is easy to change the sieves, whereby the rollers can be designed to be cantilevered.

Eine günstige Weiterbildung der Erfindung ist dadurch gekennzeichnet, daß beide Walzen gegeneinander anpreßbar sind. Zur Regelung des Preßdrucks und dadurch Erhöhung des Endtrockengehaltes der Faserstoffmatte können die Walzen z.B. mit Hydraulikzylindern oder anderen geeigneten Aggregaten aneinander gepreßt werden. stoffmatte können die Walzen z.B. mit Hydraulikzylindern oder anderen geeigneten Aggregaten aneinander gepreßt werden.A favorable further development of the invention is characterized in that that both rollers can be pressed against each other. To regulate the Pressing pressure and thereby increasing the final dry content of the fibrous mat can the rollers e.g. with hydraulic cylinders or others suitable units are pressed together. the rollers can be with hydraulic cylinders or others suitable units are pressed together.

Eine vorteilhafte Ausgestaltung der Erfindung ist dadurch gekennzeichnet, daß die Oberteile abklappbar sind. Dies ermöglicht einen einfachen Ausbau der Walzen ohne größere Zerlegungsarbeiten.An advantageous embodiment of the invention is characterized in that that the tops can be folded down. This enables easy expansion the rollers without major disassembly work.

Die Erfindung wird nun im Folgenden anhand der Zeichnungen beispielhaft beschrieben, wobei Fig. 1 eine schematische Darstellung der erfindungsgemäßen Vorrichtung, Fig. 2 eine detaillierte Darstellung, Fig. 3 einen Ausschnitt X aus Fig. 2 und Fig. 4 eine Ansicht in Richtung IV in Fig. 2 darstellt.The invention will now be illustrated by way of example with reference to the drawings described, wherein Fig. 1 is a schematic representation of the 2 according to the invention, FIG. 2 a detailed illustration, FIG. 3 a section X from Fig. 2 and Fig. 4 is a view in the direction IV in Fig. 2 represents.

Fig. 1 zeigt einen erfindungsgemäßen Faserstoffwäscher 1 mit Entwässerungswalzen 2,3, der jeweils zugeordneten Stoffzufuhr 4,5 und deren Stoffaustragsschnecke 6. Die Faserstoffsuspension wird dabei durch Stoffzufuhrleitungen 4,5 über die Länge gleichmäßig den Walzen 2,3 an der untersten Position zugeführt. Die Zufuhr kann dabei zwischen der 5 Uhr- und der 9 Uhr-Position angeordnet sein. Dadurch kann ein wesentlich größerer Teil des Umfangs der Walzen 2,3 ausgenutzt werden. Die Suspension wird weiters in die von den Leitblechen 7,8 mit den Oberflächen der Walzen 2,3 gebildeten Bereiche 7', 8' geführt, wobei der Abstand der Leitbleche 7,8 zur Oberfläche der Walzen 2,3 kontinuierlich abnimmt. Dadurch wird ein stetiger Druckanstieg und eine günstige Entwässerung bei gleichzeitiger Bildung einer Faserstoffmatte gewährleistet. Die Waschflüssigkeit wird über Leitungen 9,10 den Waschzonen 9", 10" zugeführt, die durch Bleche 9', 10' begrenzt werden. Der Abstand der Bleche 9', 10' kann zur Oberfläche der Walzen 2,3 in Drehrichtung DR1, DR2 kontinuierlich abnehmen, so daß auch hier ein zunehmend höherer Druck für die Verdrängungswäsche realisiert wird. Im unteren Bereich der Walzen 2,3 sind dann Abnahmeschaber 11,12 vorgesehen, durch die die Faserstoffmatte und insbesondere die an den Oberflächen der Walzen 2,3 noch anhaftenden Rückständen abgenommen werden und in die Austragschnecke 6 hineinfallen. Zur besseren Zugänglichkeit bei Wartungsarbeiten, insbesondere beim Walzenaustausch, sind aufklappbare Oberteile 13,14 vorgesehen. Im unteren Bereich der Walzen 2,3 sind zur weiteren Reinigung der Oberflächen Spritzdüsen 15,16 angeordnet.1 shows a fiber scrubber 1 according to the invention Dewatering rollers 2, 3, the assigned feed 4.5 and their pulping screw 6. The pulp suspension is through fabric feed lines 4.5 evenly over the length of the rollers 2,3 fed at the lowest position. The supply can be between the 5 o'clock and 9 o'clock positions. This can be a much larger part of the circumference of the rollers 2, 3 can be used. The suspension is further in the guide plates 7,8 with the surfaces of the rollers 2, 3 formed areas 7 ', 8', the Distance of the guide plates 7.8 to the surface of the rollers 2.3 continuously decreases. This will result in a steady increase in pressure and a favorable drainage guaranteed with simultaneous formation of a fiber mat. The washing liquid is fed to the washing zones 9 ", 10" via lines 9, 10 supplied, which are limited by sheets 9 ', 10'. The distance of the Sheets 9 ', 10' can face the surface of the rollers 2, 3 in the direction of rotation DR1, Decrease DR2 continuously, so that here too an increasingly higher one Pressure for displacement washing is realized. In the lower part of the Rollers 2, 3 are then provided for scrapers 11, 12 through which the Fibrous mat and in particular those on the surfaces of the rollers 2, 3 residues still adhering can be removed and into the discharge screw 6 fall into it. For better accessibility during maintenance work, especially when replacing the rollers, are hinged top parts 13.14 provided. In the lower part of the Rollers 2, 3 are spray nozzles for further cleaning of the surfaces 15,16 arranged.

Fig. 2 zeigt eine analoge Darstellung zu Fig. 1, wobei gleiche Teile mit gleichen Bezugszeichen bezeichnet sind. Ergänzend sind hier insbesondere die Hydraulikzylinder 17,18 zur gegenseitigen Anpreßung der Walzen 2,3 erkennbar. Weiters sind die Zylinder 19,20 zum Abheben der Oberteile 13,14 sowie die Anstellzylinder 21,22 für die Abnahmeschaber 11,12 erkennbar. Ebenfalls dargestellt sind im oberen Bereich Stege 23,24 für das Bedienpersonal.Fig. 2 shows an analogous representation to Fig. 1, with the same parts same reference numerals. Supplementary here are in particular the hydraulic cylinders 17, 18 for mutual contact pressure Rollers 2,3 recognizable. Furthermore, the cylinders 19, 20 are for lifting off the Upper parts 13, 14 and the setting cylinders 21, 22 for the take-off scraper 11.12 recognizable. Bars are also shown in the upper area 23.24 for the operating personnel.

Fig. 3 zeigt nun einen Ausschnitt X aus Fig. 2, in dem die Entwässerungs- und Waschfunktion genauer dargestellt ist. Auch hier wurden wieder dieselben Bezugszeichen wie in den übrigen Figuren verwendet. Fig. 3 zeigt speziell die Kanäle 25 der Walzen 2,3, durch die das Filtrat und das Waschwasser abgeführt werden. Es sind hier gut die gegen die Drehrichtung DR1, DR2 angeordneten Einlässe 26 erkennbar, wobei der Filtrat- bzw. der Waschwasserfluß entsprechend den Pfeilen 27 erfolgt. Aus diesen Kanälen 25 wird die Flüssigkeit dann achsial abgeführt. Im linken unteren Teil ist die Variante mit zusätzlichen Öffnungen 28 dargestellt, durch die Filtrat in die in Drehrichtung DR1, DR2 vorhergehenden Kanäle fließen kann. Da in diesen Kanälen das Filtrat bereits zumindest teilweise abgeführt wurde, kann daher das Volumen der Kanäle 25 für die Aufnahme von Filtrat- bzw. Waschwasser aus vorhergehenden Kanälen 25 genutzt und somit die Neigung zur Rückbefeuchtung weiter verringert werden.FIG. 3 now shows a section X from FIG. 2, in which the drainage and washing function is shown in more detail. Here again the same became Reference numerals as used in the other figures. Fig. 3 shows specifically the channels 25 of the rollers 2, 3 through which the filtrate and Wash water can be removed. It is good here against the direction of rotation DR1, DR2 arranged inlets 26 can be seen, the Filtrate or the wash water flow takes place according to the arrows 27. The liquid is then discharged axially from these channels 25. in the the lower left part shows the variant with additional openings 28, through the filtrate in the previous direction of rotation DR1, DR2 Channels can flow. As the filtrate is already in these channels was partially discharged, the volume of the channels 25 for the Absorption of filtrate or wash water from previous channels 25 used and thus further reduced the tendency to rewet become.

Fig. 4 zeigt nun die Ansicht gemäß Pfeil IV in Fig. 2. Hieraus ist erkennbar, daß zur besseren Verteilung der Suspensionszufuhr über die Länge der Walzen 2,3 auch mehrere Stoffzufuhrleitungen 4,4' und entsprechend auf der Rückseite 5,5' (nicht dargestellt) vorgesehen sein können. Ebenfalls erkennbar sind die Lagerungen 29,30 für die Wellenenden 31,32 der Walze 2 sowie das Getriebe 34. Das Filtrat wird dabei in einer Wanne unterhalb der Walzen gesammelt.FIG. 4 now shows the view according to arrow IV in FIG. 2. From this it can be seen that that for better distribution of the suspension supply over the length the rollers 2, 3 and a plurality of stock feed lines 4, 4 'and corresponding can be provided on the back 5.5 '(not shown). Likewise The bearings 29, 30 are recognizable for the shaft ends 31, 32 of the Roller 2 and the gear 34. The filtrate is in a tub collected below the rollers.

Die Erfindung ist nicht auf die dargestellten Varianten beschränkt, vielmehr kann die Waschzone auch als Waschteich ausgeführt werden. Die Waschwasseraufgabe erfolgt hier zentral, wodurch die Aufteilung auf beide Faserstoffmatten selbsttätig erfolgt. Weiters können die Walzenmäntel auch aus gebohrten Lochblechen bestehen und ohne Siebbespannung betrieben werden.The invention is not limited to the variants shown, but rather the washing zone can also be designed as a washing pond. The Wash water is fed here centrally, which divides up both fiber mats are done automatically. Furthermore, the roller jackets also consist of drilled perforated sheets and without screen covering operate.

Claims (10)

  1. Device for dewatering and washing fibre stock suspensions with two counter-rotating rolls, a stock feed (4, 5) and a stock discharge (6), in which the headbox (4, 5) is separate at the two rolls (2, 3), and a discharge screw (6) is arranged for discharge of the filter mat below the gap between the two rolls (2, 3), characterized by the headbox (4, 5) being foreseen in the lower section of the rolls (2, 3), the axes of the rolls (2, 3) being placed on a horizontal plane, the rolls (2, 3) having channels (25) for filtrate discharge and the channels (25) having inlets (26) arranged against the sense of rotation (DR1, DR2).
  2. Device according to claim 1, characterized by a guide plate (7, 8), whose distance to the roll surface decreases continually, joining the headbox (4, 5).
  3. Device according to claim 1 or 2, characterized by a wash zone (9", 10") being arranged in the upper section of the two rolls (2, 3).
  4. Device according to claim 3, characterized by the wash zone (9", 10") being separated by a separative plate (9', 10').
  5. Device according to one of the claims 1 to 4, characterized by the channels (25) having additional openings (28) connected to the previous channel (25) viewed in the sense of rotation (DR1, DR2).
  6. Device according to one of the claims 1 to 5, characterized by the surface of the rolls being designed as a perforated plate having large holes.
  7. Device according to claim 6, characterized by the holes in the perforated plate having a diameter in the range of 10 to 25 mm.
  8. Device according to one of the claims 1 to 7, characterized by the rolls being individually clothed with wires.
  9. Device according to one of the claims 1 to 8, characterized by upper parts (13, 14) being suitable for folding down.
  10. Device according to one of the claims 1 to 9, characterized by both rolls (2, 3) being suitable for being pressed against each other.
EP98928237A 1997-05-26 1998-05-09 Device for dehydrating and washing suspensions of fibrous material Expired - Lifetime EP0985068B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT89097 1997-05-26
AT0089097A AT405420B (en) 1997-05-26 1997-05-26 DEVICE FOR DRAINING AND WASHING FIBER FIBER SUSPENSIONS
PCT/EP1998/002720 WO1998054401A1 (en) 1997-05-26 1998-05-09 Device for dehydrating and washing suspensions of fibrous material

Publications (2)

Publication Number Publication Date
EP0985068A1 EP0985068A1 (en) 2000-03-15
EP0985068B1 true EP0985068B1 (en) 2001-12-19

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US (1) US6311849B1 (en)
EP (1) EP0985068B1 (en)
AT (1) AT405420B (en)
AU (1) AU8016298A (en)
CA (1) CA2290972C (en)
DE (1) DE59802544D1 (en)
WO (1) WO1998054401A1 (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9900835L (en) 1999-03-09 2000-05-08 Kvaerner Pulping Tech Apparatus for washing and dewatering a fiber pulp suspension.
SE516566C2 (en) * 2000-05-05 2002-01-29 Metso Paper Inc Drainage device with drainage surface for extruded liquid
US7285180B2 (en) * 2004-04-19 2007-10-23 Gl&V Management Hungary Kft. Perforated deck made out of a plurality of segments
EP1896186B1 (en) * 2005-04-29 2015-09-30 GTL Energy Ltd Method to transform bulk material
SE528867C2 (en) * 2005-07-04 2007-03-06 Metso Paper Inc Roll body for press roll and roll press comprising two press rolls
SE530578C2 (en) * 2006-11-23 2008-07-08 Metso Paper Inc Press roll for washing and / or dewatering of pulp and method for manufacturing or repairing such press roll
EP2125233A4 (en) * 2007-03-13 2012-01-25 Gtl Energy Ltd Method to improve the efficiency of removal of liquid water from solid bulk fuel materials
EP2152960B1 (en) * 2007-05-25 2017-06-28 Valmet Technologies, Inc. Arrangement for washing and dewatering cellulose pulp
US8673030B2 (en) * 2007-08-01 2014-03-18 Gtl Energy Holdings Pty Limited Methods of producing water-resistant solid fuels
SE532437C2 (en) * 2007-09-19 2010-01-19 Andritz Oy Drainage drum for dewatering cellulose pulp
SE532099C2 (en) * 2007-12-13 2009-10-20 Metso Paper Inc Apparatus for washing and dewatering pulp, systems for controlling such apparatus, and method for processing pulp in such apparatus
SE531845E (en) * 2007-12-13 2012-03-06 Metso Paper Inc Apparatus for washing and dewatering of pulp
SE531844E (en) * 2007-12-13 2013-02-14 Metso Paper Inc Apparatus for washing and dewatering of pulp
SE531846E (en) * 2007-12-13 2012-03-06 Metso Paper Inc Apparatus for washing and dewatering of pulp
SE0802072A2 (en) * 2008-10-01 2010-07-20 Metso Paper Inc Washing press for washing cellulose pulp
SE533686C2 (en) * 2009-04-09 2010-12-07 Andritz Oy Pressure for dewatering a suspension, and ways of cleaning it
SE533871C2 (en) * 2009-05-29 2011-02-15 Metso Paper Inc Device for preventing rewetting of the pulp in an apparatus for washing and / or dewatering pulp
SE535686C2 (en) * 2011-03-24 2012-11-06 Metso Paper Sweden Ab Device for controlling a press nip
SE536171C2 (en) * 2011-10-12 2013-06-11 Metso Paper Sweden Ab Unit for preventing rewetting of cellulose pulp during washing and / or dewatering
SE537853C2 (en) * 2013-05-07 2015-11-03 Valmet Oy Apparatus for washing and / or dewatering pulp with an insert for preventing pulp rewetting
SE538068C2 (en) * 2013-12-19 2016-02-23 Valmet Oy Arrangement and procedure for mass production
US9803319B2 (en) 2014-12-19 2017-10-31 Andritz Inc. Press roll comb plate and related method
CN105887546A (en) * 2016-04-06 2016-08-24 胡和萍 Filter screen guide roller driving device of press master
SE540916C2 (en) 2016-09-15 2018-12-18 Valmet Oy An apparatus for washing and dewatering pulp, a system for controlling such an apparatus, and a method for processing pulp in such an apparatus
CN115042468B (en) * 2022-07-12 2023-02-24 佛山市纬睿纺织实业有限公司 Textile plant dye raw material extraction device for liquid is got in oppression

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE355990B (en) * 1966-01-25 1973-05-14 Sunds Ab
SE318182B (en) * 1968-04-23 1969-12-01 Karlstad Mekaniska Ab
SE380300C (en) * 1974-03-04 1984-10-18 Sunds Ab DEVICE FOR LIQUID TREATMENT OF A FIBER SUSPENSION
DE3463342D1 (en) * 1983-08-09 1987-06-04 Fujimoto Pollcon Co Double cylinder press for formation of fibrous layers
EP0140990A1 (en) * 1983-11-08 1985-05-15 Braunschweigische Maschinenbauanstalt AG Apparatus for extracting liquids from fibrous felted materials in the form of strands
SE454187B (en) * 1985-10-31 1988-04-11 Kamyr Ab FIBER MATERIAL TREATMENT APPLIANCE
AU4848890A (en) * 1989-02-23 1990-09-26 Beloit Corporation Pulp washing apparatus and process
JP2782477B2 (en) * 1994-08-22 1998-07-30 ベロイト・テクノロジーズ・インコーポレイテッド Press for slurry processing
SE504011C2 (en) * 1994-12-12 1996-10-21 Sunds Defibrator Ind Ab dewatering

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AT405420B (en) 1999-08-25
WO1998054401A1 (en) 1998-12-03
ATA89097A (en) 1998-12-15
CA2290972C (en) 2006-12-12
US6311849B1 (en) 2001-11-06
CA2290972A1 (en) 1998-12-03
AU8016298A (en) 1998-12-30
EP0985068A1 (en) 2000-03-15
DE59802544D1 (en) 2002-01-31

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