EP2893078A1 - Fibre sorting system - Google Patents

Fibre sorting system

Info

Publication number
EP2893078A1
EP2893078A1 EP13748013.3A EP13748013A EP2893078A1 EP 2893078 A1 EP2893078 A1 EP 2893078A1 EP 13748013 A EP13748013 A EP 13748013A EP 2893078 A1 EP2893078 A1 EP 2893078A1
Authority
EP
European Patent Office
Prior art keywords
rotor blades
rotor
rotation
plane
jet
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.)
Granted
Application number
EP13748013.3A
Other languages
German (de)
French (fr)
Other versions
EP2893078B1 (en
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/en
Application granted granted Critical
Publication of EP2893078B1 publication Critical patent/EP2893078B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 pulp suspension 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 a have in the direction of rotation facing wing edge and in the spin area of the rotor blades collecting chambers for the thrown off 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.
  • the recovery of a long fiber fraction containing long fibers and, for example, free of mineral contents may also be of interest. Most such arrangements are used, however, to recycle recovered paper fiber raw materials so that they can be used as raw material again for the production of fibrous webs.
  • pulp suspension also extends to fibers containing process or wastewater, in which the recovery of the fibers is in the foreground.
  • the object of the invention is therefore a low-wear and efficient rotor design.
  • this object is achieved in that the area swept by the rotor blades is 3 to 15 times, in particular 5 to 10 times, larger than the total area of all rotor blades in the plane of rotation.
  • the object can also be achieved in that over at least 50% of the radial extent of the rotor blades, the distance between the rotor blades 3 to 15 times, in particular 5 to 10 times greater than the width of the rotor blades in the plane of rotation.
  • a further enlargement of the rotor blades in the plane of rotation would indeed increase its stability, but also limit the flow rate. This applies in particular to the target peripheral speed of the rotor blades between 10 and 70, preferably between 20 and 40 m / s.
  • 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 rotor blades In order to ensure that the short fibers and fillers of the pulp suspension flow past the rotor blades as easily as possible, it is advantageous if the rotor blades have a flat profile, preferably running with the long side surfaces in the direction of rotation. In addition, it is advantageous if the rotor blades in the rotation plane have a width between 0.5 and 5 mm, preferably between 1 and 3 mm and / or the distance between two adjacent rotor blades in the rotation plane between 5 and 25 mm, preferably between 10 and 15 mm and / or the rotor blades have a length between 5 and 30 mm, preferably between 10 and 20 mm.
  • the radial sliding out of the long fibers to the spin along the wing edge can be assisted by the fact that the wing edge extends radially outwardly at least in one, preferably at least the outermost portion with respect to the radial inclined towards the rotational direction, wherein the angle between this inclined portion of the wing edge and the radicals should be between 30 and 70 °, preferably between 55 and 65 °.
  • the effect of the rotor blades can be further increased if the leading edges are not sharp, but have a certain rounding, as can be generated, for example, by electropolishing.
  • the radii on the blade edge should be greater than 10% of the thickness of the rotor blades transversely to the plane of rotation and / or the roughness R A of Rotor blades lie at least in the region of the wing edge below 1 ⁇ .
  • the jet direction of the pulp suspension jet should be approximately parallel to the axis of rotation of the rotor.
  • the jet is directed onto the rotor blades via a jet accelerating jet.
  • This acceleration causes a Orientation of the fibers in the flow direction, which supports the detection of long fibers by the rotor blades.
  • the speed of the pulp suspension jet when hitting the rotor blades is between 3 and 20 m / s. In this way it is ensured that if possible only the long fibers adhere to the rotor blades, wherein the proportion of removed long fibers can be increased by increasing the peripheral speed of the rotor blades.
  • 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 distance between the nozzle and the rotor blades should be less than 20 mm, preferably less than 10 and in particular less than 5 mm.
  • the invention is also suitable for the treatment of pulp suspensions with fabric densities up to 3.5%, preferably up to 3.5%. The invention will be explained in more detail with reference to an exemplary embodiment.
  • FIG. 1 shows a schematic cross section through a sorting device
  • Figure 2 is a plan view of a rotor 1 with rotor blades 2;
  • FIG. 3 shows a detail from FIG. 2 and FIG.
  • FIG. 4 shows a partial cross section through a rotor blade 2.
  • annular pulp suspension jet 3 is formed in the sorting device for splitting off a long fiber fraction containing predominantly longer fibers from a pulp suspension to produce a paper web via a mold body 10 arranged centrally in a nozzle and directed onto the rotor vanes 2 of a rotor 1.
  • the gap between the jet housing 1 1 delimiting the jet 3 on the outside and the molded body 10 is increased. This is possible in the example shown in Figure 1 simply by a displacement of the nozzle housing 1 1 against the flow direction.
  • the molded body 10 causes an increase in the flow rate of the pulp suspension and thereby an increased orientation of the fibers in the flow direction, which supports the detection of long fibers by the rotor blades 2. So that alignment of the fibers is not lost too much, is the distance between the exit of the jet 3 from the nozzle and the rotor blades 2 only 5 mm.
  • the rotor 1 is driven here by a motor arranged below.
  • the jet direction of the pulp suspension jet 3 coincides with the rotor axis 4 of the rotor 1, wherein the speed of the pulp suspension jet 3 when hitting the rotor blades 2 is between 3 and 20 m / s and the peripheral speed of the rotor blades 2 is between 20 and 40 m / s. If the proportion of long fibers separated off via the rotor blades 2 is to be increased, then the peripheral speed of the rotor blades 2 is to be increased for this purpose.
  • the centrifuging is not affected by the pulp suspension jet 3, the pulp suspension jet 3 is directed only to the radially inner part of the rotor blades 2, wherein the ring thickness is between 1 and 5 mm and the rotor blades 2 have a length between 10 and 20 mm.
  • the rotor with the rotor blades 2 sweeps over a circular area with a diameter between 300 and 1, 500 mm, which ensures sufficient capacity even with an annular pulp suspension jet 3 in connection with the desired flow rate. Since the annular pulp suspension jet 3 is arranged coaxially to the axis of rotation 4, results in an optimal and uniform effect.
  • the rotor blades 2 In order to support the trapping of the long fibers when cutting through the pulp suspension jet 3, the rotor blades 2 have an electropolished surface with a roughness R A of less than 1 ⁇ and transversely to the plane of rotation 8 a thickness D between 0.3 and 0.7 mm.
  • the rotor blades 2 as shown in Figure 4, a flat, extending in the direction of rotation 5 cross-sectional profile, wherein the radii R in the direction of rotation 5 facing blade edge 6 are greater than 10% of the thickness D of the rotor blades 2.
  • the rotor 1 with its rotor blades 2, as shown in Figure 2 are made of a metal sheet.
  • the wing edge 6 pointing in the direction of rotation 5 is inclined radially outward with respect to the radials counter to the direction of rotation 5 at an angle 9 between 55 and 65 °. This facilitates the long fibers sliding along the wing edge 6 to the outside.
  • the width of the rotor blades 2 in the plane of rotation 8 is between 1 and 3 mm and the distance between two adjacent rotor blades 2 in the plane of rotation 8 between 10 and 15 mm.
  • the area swept by the rotor blades 2 is 5 to 10 times greater than the total area of all the rotor blades 2 in the plane of rotation 8.
  • the distance between adjacent rotor blades 2 5 to 10 times larger than the width of these rotor blades 2 in the plane of rotation. 8
  • a plurality of sorting devices according to the invention can also use a common axis of rotation 4 and thus also a common drive.
  • the sorting devices can be operated in series or in parallel.
  • the structure of the rotor 1 of several segments may be advantageous.

Landscapes

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

Abstract

The invention relates to a device for removing long fibres from a fibrous suspension, comprising at least one rotor (1) having rotor blades (2), in which device a jet (3) of the fibrous suspension is directed onto the rotor blades (2) of the rotor (1), the direction of the jet forms an angle of less than 45° in conjunction with the axis of rotation (4), the rotor blades (2) have a blade edge (6) oriented in the direction of rotation (5), and collecting chambers (7) are arranged in the spinning region of the rotor blades (2) for the longer fibres that are spun off by the rotor blades (2). A most efficient rotor design should be achieved by ensuring that the surface covered by the rotor blades (2) is 3 to 15 times greater than the entire surface of all the rotor blades (2) in the rotation plane (8) and/or that the distance between the rotor blades (2) is 3 to 15 times greater than the width of the rotor blades in the rotation plane (8) over at least 50% of the radial extension of the rotor blades (2).

Description

Fasersortierung  fiber screening
Die Erfindung betrifft eine Vorrichtung zum Entfernen von Langfasern aus einer Faserstoffsuspension mit wenigstens einem Rotor mit Rotorflügeln, bei der ein Strahl der Faserstoffsuspension auf die Rotorflügel des Rotors gerichtet wird, die Strahlrichtung mit der Rotationsachse einen Winkel von weniger als 45° bildet, die Rotorflügel eine in Rotationsrichtung weisende Flügelkante aufweisen und im Schleuderbereich der Rotorflügel Auffangkammern für die von den Rotorflügeln abgeschleuderten, längeren Fasern angeordnet sind. The invention relates to a device for removing long fibers from a pulp suspension 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 a have in the direction of rotation facing wing edge and in the spin area of the rotor blades collecting chambers for the thrown off from the rotor blades, longer fibers are arranged.
Eine derartige Vorrichtung ist aus der nicht- vorveröffentlichten DE 10 201 1 076 518.2 bekannt, wobei jedoch die Konstruktion der Rotorflügel noch nicht voll befriedigt. Such a device is known from the non-prepublished DE 10 201 1076 518.2, but the construction of the rotor blades are not yet fully satisfied.
Wenn eine neue Faserstoffsuspension aus Holz zubereitet oder wenn zurückgewonnenes Papier in eine Faserstoffsuspension umgewandelt wird, haben die Fasern im Allgemeinen sehr unterschiedliche Längen. Es kann dann vorteilhaft sein, die kurzen Zellulosefasern von langen Zellulosefasern zu trennen, vor allem um Papierblätter mit unterschiedlichen Qualitäten herstellen zu können. 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.
Gewöhnlich ist es dabei das Ziel, einerseits eine Kurzfaserfraktion, die überwiegend kurze Fasern enthält, deren mittlere Längen in der Größenordnung von unter einem Millimeter liegen, und andererseits eine Langfaserfraktion zu erhalten, die überwiegend Langfasern enthält, deren mittlere Längen in der Größenordnung von über eineinhalb Millimeter liegen.  It is usually the goal, on the one hand a short fiber fraction containing predominantly short fibers whose average lengths are of the order of less than one millimeter, and on the other hand to obtain a long fiber fraction containing predominantly long fibers whose average lengths in the order of about one and a half Millimeters lie.
Die Gewinnung einer Langfaserfraktion, die lange Fasern enthält und beispielsweise frei von Mineralgehalten ist, kann ebenfalls interessant sein. Meist werden derartige Anordnungen jedoch benutzt, um Altpapierfaser-Rohstoffe so weit aufzubereiten, dass sie als Rohstoff wieder zur Herstellung von Faserstoffbahnen verwendet werden können. The recovery of a long fiber fraction containing long fibers and, for example, free of mineral contents may also be of interest. Most such arrangements are used, however, to recycle recovered paper fiber raw materials so that they can be used as raw material again for the production of fibrous webs.
Gemischtes Altpapier besteht oft aus verschiedenen Sorten und hat im Vergleich zu Frischzellstoff ein relativ breites Faserlängenspektrum.  Mixed waste paper often consists of different grades and has a relatively broad fiber length spectrum compared to virgin pulp.
Hierzu ist es aus der DE 2018510 bekannt, die Faserstoffsuspension auf ein Lochsieb zu spritzen, wobei die Löcher jedoch zum Verstopfen neigen.  For this it is known from DE 2018510, to spray the pulp suspension on a perforated screen, but the holes tend to clog.
In der WO 01/29297 wird daher vorgeschlagen, ein Siebelement an einer Düse vorbeizuführen. Dabei wird das Siebelement von Drähten o.ä. gebildet, die in Bewegungsrichtung des Siebes verlaufen. Die Düse befindet sich außerhalb der Schleife des Siebelementes. In WO 01/29297 it is therefore proposed to pass a sieve element past a nozzle. The screen element of wires or the like. formed, which run in the direction of movement of the wire. The nozzle is located outside the loop of the sieve element.
Auch dies kann hinsichtlich der Fraktionierwirkung noch nicht befriedigen. Eine Verbesserung hinsichtlich des Fraktionierverfahrens konnte mit der WO 2010/018120 erreicht werden, bei der ein zylinderförmiges Siebelement von Stäben gebildete Sortierschlitze besitzt. Jedoch sind der Herstellungsaufwand und der Energiebedarf für die Freihaltung der Sortierschlitze mittels Reinigungsdüse relativ hoch.  This, too, can not satisfy the fractionation effect. An improvement in terms of the fractionation process could be achieved with WO 2010/018120, in which a cylindrical sieve element has sorting slots formed by bars. However, the production cost and the energy requirements for keeping clear the sorting slots by means of cleaning nozzle are relatively high.
Ähnlich verhält es sich auch, wenn unerwünschte Bestandteile der Faserstoffsuspension durch Waschen entfernt werden sollen. The situation is similar when unwanted constituents of the pulp suspension are to be removed by washing.
Hinsichtlich der Erfindung erstreckt sich der Begriff Faserstoffsuspension auch auf Fasern enthaltende Prozess- oder Abwässer, bei denen die Rückgewinnung der Fasern im Vordergrund steht. Die Aufgabe der Erfindung ist daher eine verschleißarme und effiziente Rotorgestaltung. With regard to the invention, the term pulp suspension also extends to fibers containing process or wastewater, in which the recovery of the fibers is in the foreground. The object of the invention is therefore a low-wear and efficient rotor design.
Erfindungsgemäß wurde die Aufgabe dadurch gelöst, dass die von den Rotorflügeln überstrichene Fläche 3 bis 15-mal, insbesondere 5 bis 10-mal größer als die Gesamtfläche aller Rotorflügel in der Rotationsebene ist. According to the invention, this object is achieved in that the area swept by the rotor blades is 3 to 15 times, in particular 5 to 10 times, larger than the total area of all rotor blades in the plane of rotation.
Alternativ oder ergänzend kann die Aufgabe auch dadurch gelöst werden, dass über mindestens 50% der radialen Erstreckung der Rotorflügel der Abstand zwischen den Rotorflügeln 3 bis 15-mal, insbesondere 5 bis 10-mal größer ist als die Breite der Rotorflügel in der Rotationsebene.  Alternatively or additionally, the object can also be achieved in that over at least 50% of the radial extent of the rotor blades, the distance between the rotor blades 3 to 15 times, in particular 5 to 10 times greater than the width of the rotor blades in the plane of rotation.
Auf diese Weise wird ein Optimum hinsichtlich der Stabilität und Verschleißfestigkeit der Rotorflügel, eines möglichst weitreichenden Erfassens der langen Fasern der Faserstoffsuspension durch die Rotorflügel sowie der Behandlung einer möglichst großen Menge an Faserstoffsuspension erreicht. In this way, an optimum in terms of stability and wear resistance of the rotor blades, the widest possible detection of the long fibers of the pulp suspension by the rotor blades and the treatment of the largest possible amount of pulp suspension is achieved.
Eine weitere Vergrößerung der Rotorflügel in der Rotationsebene würde zwar dessen Stabilität steigern, aber auch die Durchflussmenge einschränken. Dies gilt insbesondere für die hier angestrebte Umfangsgeschwindigkeit der Rotorflügel zwischen 10 und 70, vorzugsweise zwischen 20 und 40 m/s.  A further enlargement of the rotor blades in the plane of rotation would indeed increase its stability, but also limit the flow rate. This applies in particular to the target peripheral speed of the rotor blades between 10 and 70, preferably between 20 and 40 m / s.
Dabei soll die Flügelkante das Auffangen, Sammeln und Abschleudern der Langfaserfraktion in die Auffangkammern unterstützen. Daher ist es vorteilhaft, wenn die Rotorflügel quer zur Rotationsebene eine Dicke zwischen 0,2 und 2 mm, vorzugsweise zwischen 0,3 und 0,7 mm haben. 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.
Um zu gewährleisten, dass die kurzen Fasern und Füllstoffe der Faserstoffsuspension möglichst problemlos an den Rotorflügeln vorbeiströmen, ist es von Vorteil, wenn die Rotorflügel ein flaches, vorzugsweise mit den langen Seitenflächen in Rotationsrichtung verlaufendes Profil aufweisen. Außerdem ist es vorteilhaft, wenn die Rotorflügel in der Rotationsebene eine Breite zwischen 0,5 und 5 mm, vorzugsweise zwischen 1 und 3 mm haben und/oder der Abstand zwischen zwei benachbarten Rotorflügeln in der Rotationsebene zwischen 5 und 25 mm, vorzugsweise zwischen 10 und 15 mm liegt und/oder die Rotorflügel eine Länge zwischen 5 und 30 mm, vorzugsweise zwischen 10 und 20 mm haben. In order to ensure that the short fibers and fillers of the pulp suspension flow past the rotor blades as easily as possible, it is advantageous if the rotor blades have a flat profile, preferably running with the long side surfaces in the direction of rotation. In addition, it is advantageous if the rotor blades in the rotation plane have a width between 0.5 and 5 mm, preferably between 1 and 3 mm and / or the distance between two adjacent rotor blades in the rotation plane between 5 and 25 mm, preferably between 10 and 15 mm and / or the rotor blades have a length between 5 and 30 mm, preferably between 10 and 20 mm.
Unabhängig von der Gestaltung der Rotorflügel kann das radiale Hinausgleiten der Langfasern bis zum Abschleudern entlang der Flügelkante dadurch unterstützt werden, dass die Flügelkante radial nach außen zumindest in einem, vorzugsweise wenigstens dem äußersten Abschnitt bezüglich der Radialen entgegen der Rotationsrichtung geneigt verläuft, wobei der Winkel zwischen diesem geneigten Abschnitt der Flügelkante und der Radikalen zwischen 30 und 70°, vorzugsweise zwischen 55 und 65° liegen sollte. Die Wirkung der Rotorflügel lässt sich des Weiteren steigern, wenn deren Vorderkanten nicht scharf sind, sondern eine gewisse Rundung aufweisen, wie dies bspw. durch Elektropolieren erzeugt werden kann. Regardless of the design of the rotor blades, the radial sliding out of the long fibers to the spin along the wing edge can be assisted by the fact that the wing edge extends radially outwardly at least in one, preferably at least the outermost portion with respect to the radial inclined towards the rotational direction, wherein the angle between this inclined portion of the wing edge and the radicals should be between 30 and 70 °, preferably between 55 and 65 °. The effect of the rotor blades can be further increased if the leading edges are not sharp, but have a certain rounding, as can be generated, for example, by electropolishing.
Damit überwiegend nur die langen Fasern an den Rotorflügeln haftenbleiben und an den Rotorflügeln radial nach außen rutschen und von dort abgeschleudert werden, sollten die Radien an der Flügelkante größer als 10% der Dicke der Rotorflügel quer zur Rotationsebene sein und /oder die Rauigkeit RA der Rotorflügel zumindest im Bereich der Flügelkante unter 1 μιτι liegen. So that predominantly only the long fibers stick to the rotor blades and slip radially outward on the rotor blades and are thrown off from there, the radii on the blade edge should be greater than 10% of the thickness of the rotor blades transversely to the plane of rotation and / or the roughness R A of Rotor blades lie at least in the region of the wing edge below 1 μιτι.
Im Interesse einer möglichst gleichmäßigen Gestaltung sollte die Strahlrichtung des Faserstoffsuspensionsstrahles etwa parallel zur Rotationsachse des Rotors verlaufen. In the interests of the most uniform possible design, the jet direction of the pulp suspension jet should be approximately parallel to the axis of rotation of the rotor.
Hierbei ist es von Vorteil, wenn der Strahl über eine, den Strahl beschleunigende Düse auf die Rotorflügel gerichtet wird. Diese Beschleunigung bewirkt eine Ausrichtung der Fasern in Strömungsrichtung, was das Erfassen der Langfasern durch die Rotorflügel unterstützt. In this case, it is advantageous if the jet is directed onto the rotor blades via a jet accelerating jet. This acceleration causes a Orientation of the fibers in the flow direction, which supports the detection of long fibers by the rotor blades.
Des Weiteren hat es sich als vorteilhaft erwiesen, wenn die Geschwindigkeit des Faserstoffsuspensionsstrahls beim Auftreffen auf die Rotorflügel zwischen 3 und 20 m/s liegt. Auf diese Weise wird sichergestellt, dass möglichst nur die langen Fasern an den Rotorflügeln haftenbleiben, wobei der Anteil an entfernten Langfasern durch eine Erhöhung der Umfangsgeschwindigkeit der Rotorflügel vergrößert werden kann. Furthermore, it has proved to be advantageous if the speed of the pulp suspension jet when hitting the rotor blades is between 3 and 20 m / s. In this way it is ensured that if possible only the long fibers adhere to the rotor blades, wherein the proportion of removed long fibers can be increased by increasing the peripheral speed of the rotor blades.
Damit das radiale Hinausgleiten und Abschleudern der Langfasern nicht beeinträchtigt wird, sollte sich der Faserstoffsuspensionsstrahl zumindest überwiegend, vorzugsweise ausschließlich nur über einen radial inneren Bereich der Rotorflügel erstrecken. So that the radial sliding out and centrifuging of the long fibers is not impaired, the pulp suspension jet should extend at least predominantly, preferably exclusively only over a radially inner region of the rotor blades.
Eine umfassende Nutzung der Rotorflügel kann insbesondere dann erreicht werden, wenn der Faserstoffsuspensionsstrahl einen ringförmigen, die Rotationsachse des Rotors umschließenden Querschnitt besitzt. Dabei ist es von Vorteil, wenn der ringförmige Faserstoffsuspensionsstrahl eine Ringdicke zwischen 1 und 5 mm aufweist. 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.
Außerdem sollte der Abstand zwischen der Düse und den Rotorflügeln kleiner als 20 mm, vorzugsweise kleiner als 10 und insbesondere kleiner als 5 mm sein. In addition, the distance between the nozzle and the rotor blades should be less than 20 mm, preferably less than 10 and in particular less than 5 mm.
Der geringe Abstand zwischen dem Düsenaustritt und den Rotorflügeln sorgt dafür, dass die infolge der Strahlbeschleunigung in der Düse verstärkte Ausrichtung der Fasern in Strömungsrichtung möglichst umfassend bis zum Auftreffen auf die Rotorflügel erhalten bleibt. Wegen der geringen Gefahr einer Verstopfung eignet sich die Erfindung auch zur Behandlung von Faserstoffsuspensionen mit Stoffdichten bis zu 3,5%, vorzugsweise bis 3,5%. Nachfolgend soll die Erfindung an einem Ausführungsbeispiel näher erläutert werden. The small distance between the nozzle outlet and the rotor blades ensures that the orientation of the fibers in the direction of flow, which is increased as a result of the jet acceleration in the nozzle, remains as extensive as possible until it hits the rotor blades. Because of the low risk of constipation, the invention is also suitable for the treatment of pulp suspensions with fabric densities up to 3.5%, preferably up to 3.5%. The invention will be explained in more detail with reference to an exemplary embodiment.
In der beigefügten Zeichnung zeigt:  In the attached drawing shows:
Figur 1 : einen schematischen Querschnitt durch eine Sortiervorrichtung;  FIG. 1 shows a schematic cross section through a sorting device;
Figur 2: eine Draufsicht auf einen Rotor 1 mit Rotorflügeln 2; Figure 2 is a plan view of a rotor 1 with rotor blades 2;
Figur 3: einen Ausschnitt aus Figur 2 und FIG. 3 shows a detail from FIG. 2 and FIG
Figur 4: einen Teilquerschnitt durch einen Rotorflügel 2.  FIG. 4 shows a partial cross section through a rotor blade 2.
Wie in Figur 1 zu erkennen, wird in der Sortiervorrichtung zur Abspaltung einer überwiegend längere Fasern enthaltenden Langfaserfraktion aus einer Faserstoffsuspension zur Herstellung einer Papierbahn über einen zentral in einer Düse angeordneten Formkörper 10 ein ringförmiger Faserstoffsuspensionsstrahl 3 gebildet und auf die Rotorflügel 2 eines Rotors 1 gerichtet. As can be seen in FIG. 1, an annular pulp suspension jet 3 is formed in the sorting device for splitting off a long fiber fraction containing predominantly longer fibers from a pulp suspension to produce a paper web via a mold body 10 arranged centrally in a nozzle and directed onto the rotor vanes 2 of a rotor 1.
Bei einer Störung oder einem Stillstand wird der Spalt zwischen dem, den Strahl 3 außen begrenzenden Düsengehäuse 1 1 und dem Formkörper 10 vergrößert. Dies ist bei dem in Figur 1 gezeigten Beispiel einfach durch eine Verschiebung des Düsengehäuses 1 1 entgegen der Strömungsrichtung möglich. In the event of a fault or a standstill, the gap between the jet housing 1 1 delimiting the jet 3 on the outside and the molded body 10 is increased. This is possible in the example shown in Figure 1 simply by a displacement of the nozzle housing 1 1 against the flow direction.
Dies soll ein Verstopfen des Spaltes mit Fasern verhindern. Der Formkörper 10 bewirkt eine Erhöhung der Strömungsgeschwindigkeit der Faserstoffsuspension und dabei eine verstärkte Ausrichtung der Fasern in Strömungsrichtung, was die Erfassung der Langfasern durch die Rotorflügel 2 unterstützt. Damit eine Ausrichtung der Fasern nicht zu stark verloren geht, beträgt der Abstand zwischen dem Austritt des Strahls 3 aus der Düse und den Rotorflügeln 2 nur 5 mm. This is to prevent clogging of the gap with fibers. The molded body 10 causes an increase in the flow rate of the pulp suspension and thereby an increased orientation of the fibers in the flow direction, which supports the detection of long fibers by the rotor blades 2. So that alignment of the fibers is not lost too much, is the distance between the exit of the jet 3 from the nozzle and the rotor blades 2 only 5 mm.
Der Rotor 1 wird hier von einem unterhalb angeordneten Motor angetrieben. The rotor 1 is driven here by a motor arranged below.
Dabei stimmt die Strahlrichtung des Faserstoffsuspensionsstrahls 3 mit der Rotorachse 4 des Rotors 1 überein, wobei die Geschwindigkeit des Faserstoffsuspensionsstrahls 3 beim Auftreffen auf die Rotorflügel 2 zwischen 3 und 20 m/s und die Umfangsgeschwindigkeit der Rotorflügel 2 zwischen 20 und 40 m/s liegt. Soll der Anteil an über die Rotorflügel 2 abgeteilten Langfasern erhöht werden, so ist hierzu die Umfangsgeschwindigkeit der Rotorflügel 2 zu erhöhen. The jet direction of the pulp suspension jet 3 coincides with the rotor axis 4 of the rotor 1, wherein the speed of the pulp suspension jet 3 when hitting the rotor blades 2 is between 3 and 20 m / s and the peripheral speed of the rotor blades 2 is between 20 and 40 m / s. If the proportion of long fibers separated off via the rotor blades 2 is to be increased, then the peripheral speed of the rotor blades 2 is to be increased for this purpose.
Beim Durchschneiden des Faserstoffsuspensionsstrahls 3 bleiben überwiegend längere Fasern an den Rotorflügeln 2 hängen. Diese können sich dort ansammeln und werden infolge der Zentrifugalkraft an den Rotorflügeln 2 radial nach außen wandern und anschließend abgeschleudert. When cutting through the pulp suspension jet 3, predominantly longer fibers remain suspended on the rotor blades 2. These can accumulate there and are due to the centrifugal force on the rotor blades 2 to move radially outward and then thrown off.
Damit das Abschleudern nicht durch den Faserstoffsuspensionsstrahl 3 beeinträchtigt wird, wird der Faserstoffsuspensionsstrahl 3 nur auf den radial inneren Teil der Rotorflügel 2 gerichtet, wobei die Ringstärke zwischen 1 und 5 mm liegt und die Rotorflügel 2 eine Länge zwischen 10 und 20 mm haben.  Thus, the centrifuging is not affected by the pulp suspension jet 3, the pulp suspension jet 3 is directed only to the radially inner part of the rotor blades 2, wherein the ring thickness is between 1 and 5 mm and the rotor blades 2 have a length between 10 and 20 mm.
Außerdem überstreicht der Rotor mit den Rotorflügeln 2 eine Kreisfläche mit einem Durchmesser zwischen 300 und 1 .500 mm, was auch bei einem ringförmigen Faserstoffsuspensionsstrahl 3 in Verbindung mit der angestrebten Strömungsgeschwindigkeit für eine ausreichende Kapazität sorgt. Da der ringförmige Faserstoffsuspensionsstrahl 3 koaxial zur Rotationsachse 4 angeordnet ist, ergibt sich eine optimale und gleichmäßige Wirkung. In addition, the rotor with the rotor blades 2 sweeps over a circular area with a diameter between 300 and 1, 500 mm, which ensures sufficient capacity even with an annular pulp suspension jet 3 in connection with the desired flow rate. Since the annular pulp suspension jet 3 is arranged coaxially to the axis of rotation 4, results in an optimal and uniform effect.
Zum Auffangen der langen, von den Rotorflügeln 2 abgeschleuderten Fasern (Langfaserfraktion) verläuft um den Rotor 1 im entsprechenden Schleuderbereich eine Auffangkammer 7. Der Rest der Faserstoffsuspension passiert die Rotorflügel 2 und wird darunter in einer Auffangwanne 12 aufgefangen und abgeführt. To catch the long, centrifuged by the rotor blades 2 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.
Um das Einfangen der langen Fasern beim Durchschneiden des Faserstoffsuspensionsstrahls 3 zu unterstützen, haben die Rotorflügel 2 eine elektropolierte Oberfläche mit einer Rauigkeit RA von unter 1 μιτι und quer zur Rotationsebene 8 eine Dicke D zwischen 0,3 und 0,7 mm. In order to support the trapping of the long fibers when cutting through the pulp suspension jet 3, the rotor blades 2 have an electropolished surface with a roughness R A of less than 1 μιτι and transversely to the plane of rotation 8 a thickness D between 0.3 and 0.7 mm.
Außerdem haben die Rotorflügel 2, wie in Figur 4 dargestellt, ein flaches, in Rotationsrichtung 5 verlaufendes Querschnittsprofil, wobei die Radien R bei der in Rotationsrichtung 5 weisenden Flügelkante 6 größer als 10% der Dicke D der Rotorflügel 2 sind.  In addition, the rotor blades 2, as shown in Figure 4, a flat, extending in the direction of rotation 5 cross-sectional profile, wherein the radii R in the direction of rotation 5 facing blade edge 6 are greater than 10% of the thickness D of the rotor blades 2.
In besonders einfacher Ausführung kann der Rotor 1 mit seinen Rotorflügeln 2, wie in Figur 2 gezeigt, aus einem Blech gefertigt werden. In a particularly simple embodiment, the rotor 1 with its rotor blades 2, as shown in Figure 2, are made of a metal sheet.
Wesentlich ist hierbei, wie im Detail in Figur 3 zu erkennen, dass die in Rotationsrichtung 5 weisende Flügelkante 6 radial nach außen bezüglich der Radialen entgegen der Rotationsrichtung 5 mit einem Winkel 9 zwischen 55 und 65° geneigt verläuft. Dies erleichtert den langen Fasern das Gleiten entlang der Flügelkante 6 nach außen. It is essential here, as can be seen in detail in FIG. 3, that the wing edge 6 pointing in the direction of rotation 5 is inclined radially outward with respect to the radials counter to the direction of rotation 5 at an angle 9 between 55 and 65 °. This facilitates the long fibers sliding along the wing edge 6 to the outside.
Dabei liegt die Breite der Rotorflügel 2 in der Rotationsebene 8 zwischen 1 und 3 mm und der Abstand zwischen zwei benachbarten Rotorflügeln 2 in der Rotationsebene 8 zwischen 10 und 15 mm. Zur Gewährleistung einer ausreichenden Stabilität der Rotorflügel 2 und einer ausreichend großen freien Fläche für den Suspensionsstrahl 3 ist die von den Rotorflügeln 2 überstrichene Fläche 5 bis 10-mal größer als die Gesamtfläche aller Rotorflügel 2 in der Rotationsebene 8. Des Weiteren ist aus gleichem Grund über mindestens 50% der radialen Erstreckung der Rotorflügel 2 der Abstand zwischen benachbarten Rotorflügeln 2 5 bis 10-mal größer als die Breite dieser Rotorflügel 2 in der Rotationsebene 8. The width of the rotor blades 2 in the plane of rotation 8 is between 1 and 3 mm and the distance between two adjacent rotor blades 2 in the plane of rotation 8 between 10 and 15 mm. To ensure sufficient stability of the rotor blades 2 and a sufficiently large free surface for the suspension jet 3, the area swept by the rotor blades 2 is 5 to 10 times greater than the total area of all the rotor blades 2 in the plane of rotation 8. Furthermore, for the same reason at least 50% of the radial extent of the rotor blades 2, the distance between adjacent rotor blades 2 5 to 10 times larger than the width of these rotor blades 2 in the plane of rotation. 8
In einer bevorzugten Ausführung können auch mehrere erfindungsgemäße Sortiervorrichtungen eine gemeinsame Rotationsachse 4 und damit auch einen gemeinsamen Antrieb benutzen. Dabei können die Sortiervorrichtungen in Reihenoder Parallelschaltung betrieben werden. In a preferred embodiment, a plurality of sorting devices according to the invention can also use a common axis of rotation 4 and thus also a common drive. The sorting devices can be operated in series or in parallel.
Auch der Aufbau der Rotors 1 aus mehreren Segmenten kann vorteilhaft sein.  The structure of the rotor 1 of several segments may be advantageous.

Claims

Patentansprüche 1 . Vorrichtung zum Entfernen von Langfasern aus einer Faserstoffsuspension mit wenigstens einem Rotor (1 ) mit Rotorflügeln (2), bei der ein Strahl (3) der Faserstoffsuspension auf die Rotorflügel (2) des Rotors (1 ) gerichtet wird, die Strahlrichtung mit der Rotationsachse (4) einen Winkel von weniger als 45° bildet, die Rotorflügel (2) eine in Rotationsrichtung (5) weisende Flügelkante (6) aufweisen und im Schleuderbereich der Rotorflügel (2) Auffangkammern (7) für die von den Rotorflügeln (2) abgeschleuderten, längeren Fasern angeordnet sind, dadurch gekennzeichnet, dass die von den Rotorflügeln (2) überstrichene Fläche 3 bis 15-mal größer als die Gesamtfläche aller Rotorflügel (2) in der Rotationsebene (8) ist. Claims 1. Device for removing long fibers from a pulp suspension with at least one rotor (1) with rotor blades (2), in which a jet (3) of the pulp suspension is directed onto the rotor vanes (2) of the rotor (1), the jet direction with the axis of rotation ( 4) forms an angle of less than 45 °, the rotor blades (2) have a blade edge (6) pointing in the direction of rotation (5) and in the centrifugal region of the rotor blades (2) catching chambers (7) for the rotor blades (2) thrown off, longer fibers are arranged, characterized in that the area swept by the rotor blades (2) is 3 to 15 times larger than the total area of all rotor blades (2) in the plane of rotation (8).
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die von den2. Apparatus according to claim 1, characterized in that the of the
Rotorflügeln (2) überstrichene Fläche 5 bis 10-mal größer als die Gesamtfläche aller Rotorflügel (2) in der Rotationsebene (8) ist. 3. Vorrichtung zum Entfernen von Langfasern aus einer Faserstoffsuspension mit wenigstens einem Rotor (1 ) mit Rotorflügeln (2), bei der ein Strahl (3) der Faserstoffsuspension auf die Rotorflügel (2) des Rotors (1 ) gerichtet wird, die Strahlrichtung mit der Rotationsachse (4) einen Winkel von weniger als 45° bildet, die Rotorflügel (2) eine in Rotationsrichtung (5) weisende Flügelkante (6) aufweisen und im Schleuderbereich der Rotorflügel (2) Auffangkammern (7) für die von den Rotorflügeln (2) abgeschleuderten, längeren Fasern angeordnet sind, insbesondere nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass über mindestens 50% der radialen Erstreckung der Rotorflügel (2) der Abstand zwischen den Rotorflügeln (2) 3 bis 15-mal größer ist als die Breite der Rotorflügel (2) in der Rotationsebene (8). Rotor wings (2) swept area 5 to 10 times larger than the total area of all rotor blades (2) in the plane of rotation (8). 3. An apparatus for removing long fibers from a pulp suspension with at least one rotor (1) with rotor blades (2), wherein a jet (3) of the pulp suspension is directed to the rotor blades (2) of the rotor (1), the beam direction with the Rotary axis (4) forms an angle of less than 45 °, the rotor blades (2) have a wing edge (6) pointing in the direction of rotation (5) and in the centrifugal region of the rotor blades (2) catch chambers (7) for the rotor blades (2). spun-off, longer fibers are arranged, in particular according to one of the preceding claims, characterized in that over at least 50% of the radial extent of the rotor blades (2), the distance between the rotor blades (2) is 3 to 15 times greater than the width of the rotor blades (2) in the plane of rotation (8).
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass über mindestens 50% der radialen Erstreckung der Rotorflügel (2) der Abstand zwischen den Rotorflügeln (2) 5 bis 10-mal größer ist als die Breite der Rotorflügel (2) in der Rotationsebene (8). 4. Apparatus according to claim 3, characterized in that over at least 50% of the radial extent of the rotor blades (2), the distance between the rotor blades (2) is 5 to 10 times greater than the width of the rotor blades (2) in the plane of rotation ( 8th).
5. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Flügelkante (6) radial nach außen zumindest in einem, vorzugsweise wenigstens dem äußersten Abschnitt bezüglich der Radialen entgegen der Rotationsrichtung (5) geneigt verläuft. 5. Device according to one of the preceding claims, characterized in that the wing edge (6) extends radially outwardly at least in one, preferably at least the outermost portion with respect to the radial opposite to the rotational direction (5) inclined.
6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass der Winkel (9) zwischen dem geneigten Abschnitt der Flügelkante (6) und der Radikalen zwischen 30 und 70°, vorzugsweise zwischen 55 und 65° liegt. 7. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Rotorflügel (2) in der Rotationsebene (8) eine Breite zwischen 0,5 und 5 mm, vorzugsweise zwischen 1 und 3 mm haben. 6. The device according to claim 5, characterized in that the angle (9) between the inclined portion of the wing edge (6) and the radicals between 30 and 70 °, preferably between 55 and 65 °. 7. Device according to one of the preceding claims, characterized in that the rotor blades (2) in the plane of rotation (8) have a width between 0.5 and 5 mm, preferably between 1 and 3 mm.
8. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Abstand zwischen zwei benachbarten Rotorflügeln (2) in der Rotationsebene (8) zwischen 5 und 25 mm, vorzugsweise zwischen 10 und 15 mm liegt. 8. Device according to one of the preceding claims, characterized in that the distance between two adjacent rotor blades (2) in the plane of rotation (8) between 5 and 25 mm, preferably between 10 and 15 mm.
9. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Rotorflügel (2) eine Länge zwischen 5 und 30 mm, vorzugsweise zwischen 10 und 20 mm haben. 9. Device according to one of the preceding claims, characterized in that the rotor blades (2) have a length between 5 and 30 mm, preferably between 10 and 20 mm.
10. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Rotorflügel (2) quer zur Rotationsebene (8) eine Dicke zwischen 0,2 und 2 mm, vorzugsweise zwischen 0,3 und 0,7 mm haben. 10. Device according to one of the preceding claims, characterized in that the rotor blades (2) transversely to the plane of rotation (8) have a thickness between 0.2 and 2 mm, preferably between 0.3 and 0.7 mm.
1 1 .Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Radien (R) an der Flügelkante (6) größer als 10% der Dicke (D) der Rotorflügel (2) quer zur Rotationsebene (8) sind. 12.Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Rauigkeit RA der Rotorflügel (2) zumindest im Bereich der Flügelkante (6) unter 1 μιτι liegt. 1 1 .Vorrichtung according to any one of the preceding claims, characterized in that the radii (R) on the wing edge (6) are greater than 10% of the thickness (D) of the rotor blades (2) transversely to the plane of rotation (8). 12.Vorrichtung according to any one of the preceding claims, characterized in that the roughness R A of the rotor blades (2) at least in the region of the wing edge (6) is less than 1 μιτι.
13. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Rotorflügel (2) ein flaches, vorzugsweise in13. Device according to one of the preceding claims, characterized in that the rotor blades (2) has a flat, preferably in
Rotationsrichtung (5) verlaufendes Profil aufweisen. Have direction of rotation (5) extending profile.
14. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Rotorflügel (2), insbesondere deren Flügelkanten (6) elektropoliert sind. 14. Device according to one of the preceding claims, characterized in that the rotor blades (2), in particular their wing edges (6) are electropolished.
15. Vorhchtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Faserstoffsuspensionsstrahl (3) ringförmig ausgebildet ist und koaxial zum Rotor (1 ) geführt wird. 16.Vorrichtung nach Anspruch 15, dadurch gekennzeichnet, dass die 15. An eye according to any one of the preceding claims, characterized in that the pulp suspension jet (3) is annular and coaxial with the rotor (1) is guided. 16.Vorrichtung according to claim 15, characterized in that the
Strahlrichtung des Faserstoffsuspensionsstrahles (3) etwa parallel zur Rotationsachse (4) des Rotors (1 ) verläuft.  Beam direction of the pulp suspension jet (3) approximately parallel to the axis of rotation (4) of the rotor (1).
1 /.Vorrichtung nach Anspruch 15 oder 16 dadurch gekennzeichnet, dass der 1 /.Vorrichtung according to claim 15 or 16, characterized in that the
Strahl (3) über eine, den Strahl (3) beschleunigende Düse auf die Rotorflügel (2) gerichtet wird.  Beam (3) via a, the jet (3) accelerating nozzle is directed to the rotor blades (2).
18.Vorrichtung nach Anspruch 17, dadurch gekennzeichnet, dass der 18.Vorrichtung according to claim 17, characterized in that the
Abstand zwischen der Düse und den Rotorflügeln (2) kleiner als 20 mm, vorzugsweise kleiner als 10 und insbesondere kleiner als 5 mm ist.  Distance between the nozzle and the rotor blades (2) is less than 20 mm, preferably less than 10 and in particular less than 5 mm.
EP13748013.3A 2012-09-10 2013-08-07 Fibre sorting system Not-in-force EP2893078B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201210215964 DE102012215964A1 (en) 2012-09-10 2012-09-10 fiber screening
PCT/EP2013/066563 WO2014037178A1 (en) 2012-09-10 2013-08-07 Fibre sorting system

Publications (2)

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

Family

ID=48979735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13748013.3A Not-in-force EP2893078B1 (en) 2012-09-10 2013-08-07 Fibre sorting system

Country Status (4)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018127914A1 (en) * 2018-11-08 2020-05-14 Voith Patent Gmbh Rotor for a heating unit

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE339165B (en) 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 (en) * 1985-07-08 1986-05-20 Kamyr Ab DEVICE FOR SEPARATION OF NON-REQUIRED PARTICLES IN A FIBER MASS
EP0262124B1 (en) * 1986-04-11 1990-08-29 Beloit Corporation Rotating separator
CN1040254A (en) * 1988-08-08 1990-03-07 高信光 Divergent-centrifugal impeller and rotating machinery thereof
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
CA2545313C (en) * 2003-11-14 2010-08-10 Akzo Nobel N.V. Separation apparatus
CN102119248A (en) 2008-08-11 2011-07-06 沃依特专利有限责任公司 Arrangement for fractionating a suspension of fibrous material
DE102011076518A1 (en) 2011-05-26 2012-11-29 Voith Patent Gmbh fiber screening

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014037178A1 *

Also Published As

Publication number Publication date
CN104619912A (en) 2015-05-13
DE102012215964A1 (en) 2014-03-13
CN104619912B (en) 2017-06-09
WO2014037178A1 (en) 2014-03-13
EP2893078B1 (en) 2016-12-14

Similar Documents

Publication Publication Date Title
EP0034780B1 (en) Rotating sorter
DE1761600C3 (en) Device for sifting fiber suspensions
EP2324154A2 (en) Arrangement for fractionating a suspension of fibrous material
DE2063516B2 (en) DRUM SCREEN DEVICE FOR FIBER SUSPENSIONS
DE3322578A1 (en) SORTING DEVICE
DE2314652A1 (en) METHOD AND DEVICE FOR CUTTING MINERAL FIBERS, IN PARTICULAR GLASS FIBERS
WO2013083509A1 (en) Screen device for screening a fibrous-material suspension
EP1598477B1 (en) Pressure screen for screening a fibrous suspension
DE3010952A1 (en) DISC SORTER FOR CLEANING FIBER SUSPENSIONS
DE1923230C3 (en) Method and device for sorting the length of fibers
EP2714988B1 (en) Fibre sorting system
WO2010124911A2 (en) Method for treating a fiber suspension and screening devices for carrying out the same
EP2893078B1 (en) Fibre sorting system
WO2016193364A1 (en) Pressure screen
DE2453199A1 (en) FIBERIZING DEVICE
EP2732094B1 (en) Pressure screen
DE102006031904B3 (en) Paper pulping assembly for paper recovery and recycling has rotor surrounded by ring
DE202006010608U1 (en) Apparatus for the production or treatment of pulp
WO2016165858A1 (en) Sorting device
EP3036371B1 (en) Pressure screen
DE20304303U1 (en) Pressurised paper fibre suspension sorting assembly has rotating cylinder with a series of free standing surface-mounted blades set at different angles of attack
DE202004010009U1 (en) Secondary pulp solver for pulp processing
DE1116966B (en) Fourdrinier machine for the production of paper or similar fibrous webs
WO2012119998A2 (en) Wire device
WO2014044475A1 (en) Fractionation

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20150410

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20160715

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 853689

Country of ref document: AT

Kind code of ref document: T

Effective date: 20170115

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502013005751

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20161214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170314

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170315

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170414

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170414

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170314

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502013005751

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20170915

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20170807

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170831

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170831

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20180430

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20170831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170807

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170807

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170807

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170831

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20180823

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FI

Payment date: 20180822

Year of fee payment: 6

Ref country code: SE

Payment date: 20180823

Year of fee payment: 6

Ref country code: AT

Payment date: 20180822

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20130807

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502013005751

Country of ref document: DE

REG Reference to a national code

Ref country code: FI

Ref legal event code: MAE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 853689

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190807

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190807

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190808

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190807

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200303

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214