EP1122356B1 - Refiner - Google Patents

Refiner Download PDF

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Publication number
EP1122356B1
EP1122356B1 EP01101560A EP01101560A EP1122356B1 EP 1122356 B1 EP1122356 B1 EP 1122356B1 EP 01101560 A EP01101560 A EP 01101560A EP 01101560 A EP01101560 A EP 01101560A EP 1122356 B1 EP1122356 B1 EP 1122356B1
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EP
European Patent Office
Prior art keywords
rotor
refiner
conical
feed channel
inlet pipe
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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
Application number
EP01101560A
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German (de)
French (fr)
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EP1122356A3 (en
EP1122356A2 (en
Inventor
Peter Dipl.Ing. Antensteiner
Helmuth Dipl.Ing.Dr. Gabl
Andreas Dipl.Ing.Dr. Gorton-Hülgerth
Gerald Ing. Schadler
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Andritz AG
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Andritz AG
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Priority to AT01101560T priority Critical patent/ATE302874T1/en
Publication of EP1122356A2 publication Critical patent/EP1122356A2/en
Publication of EP1122356A3 publication Critical patent/EP1122356A3/en
Application granted granted Critical
Publication of EP1122356B1 publication Critical patent/EP1122356B1/en
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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
    • D21D1/34—Other mills or refiners
    • D21D1/38—Other mills or refiners with horizontal shaft
    • 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
    • D21D1/22—Jordans

Definitions

  • the invention relates to a refiner for grinding a pulp suspension consisting of a rotor and stator with an inlet tube and a cylindrical or conical grinding gap between rotor and stator.
  • the aim of the invention is therefore to avoid the disadvantages of the known cylinder and cone refiner to allow high throughputs as a result.
  • the invention is therefore characterized in that the material supply channel extends from the inlet pipe to the grinding gap in the radial direction, wherein in the material supply channel and / or inlet pipe internals, in particular blades, are arranged.
  • the supplied material is here accelerated by the rotation of the rotor in the circumferential direction, whereby an increase in pressure in the liquid is effected.
  • this supply of pressure can save the feed pump and, on the other hand, a good rotationally symmetrical flow is achieved.
  • the acceleration of the liquid can be significantly enhanced in addition to the effects of wall friction.
  • An advantageous embodiment of the invention is characterized in that that the substance supply channel is formed rotationally symmetrical. Thereby results in a uniform and rotationally symmetrical flow of the Grinding gaps.
  • An advantageous development of the invention is characterized in that in that in that the inlet pipe connected to the material supply channel has an axis has, which coincides with the axis of the rotor. In this way the substance feed takes place directly in the axis of the refiner, which causes the substance on the one hand already partly in the tube before entering the substance supply channel is accelerated and on the other hand an even more even distribution of the substance is effected.
  • a favorable development of the invention is characterized in that that between the inlet pipe and the grinding gap, a disc is provided which limited the substance supply channel. If the substance supply outside the Axis, so the material is deflected by the disc on the shaft and rotationally symmetrical led to the outside, here between disc and Rotor face the acceleration of the liquid radially outward takes place and then the liquid in the Mahlspalt evenly distributed flows.
  • a favorable embodiment of the invention is characterized in that that a cylindrical rotor is provided. It can also be a turn in Flow direction of the material expanding conical rotor or alternatively a tapered conical rotor in the flow direction of the substance be provided. Depending on the requirement, the appropriate form of the Mahlspalts be used.
  • a double rotor in which the Rotor both cylindrical and conical (expanding cone or tapering cone) may be a large Throughput can be achieved, where also a uniform rotationally symmetrical flow of Mahlspalte done.
  • a favorable development of the invention is characterized in that in that in that the substance feed channel is arranged between the two rotors. Especially when using an inlet tube, which is in the axis of a Rotor is located, the fabric can be fed to the center of the refiner and there be guided by the rotation to the outside, resulting in a corresponding increase in pressure leads. In further consequence the material becomes centered introduced into the corresponding Mahlspalt, creating another Homogenization of the feed is achieved.
  • An advantageous embodiment of the invention is characterized in that that a cylindrical and a conical grinding gap lined up are.
  • the juxtaposition of a cylindrical and a conical Mahlspaltes can either be on a rotor or using two consecutive different rotors can be achieved. In both cases, the sequence of the sequence is arbitrary and only dependent on the material properties to be achieved.
  • a variant with axial material supply Fig. 2 a Variant with lateral material supply
  • Fig. 3 shows an analogous variant to Fig. 2 with conical rotor
  • Fig. 4 shows a further variant with conical rotor
  • Fig. 5 a Variant with cylindrical double rotor and axial material supply
  • Fig. 6 and Fig. 7 shows a variant with double bevel rotors both tapered and expanding and axial material supply
  • Fig. 8 shows a variant with cylindrical Double rotor and lateral material supply
  • Fig. 9 shows a variant with axial Fuel supply and double rotor consisting of cylinder and cone rotor
  • Fig. 14 is a section along line A-A in Fig. 5th represents.
  • FIG. 1 shows a refiner according to the invention with inlet 1, Cloth feed channel 7, grinding zone 3, outlet 4, rotor 5 and stator 6.
  • the substance flows through the inlet 1, which is arranged in the axis of the rotor 5 is, centrally in the refiner.
  • In the acceleration zone 7 between rotor 5 and housing 6 is made by wall friction or by special installations (see Fig. 14) an acceleration of the fabric in the circumferential direction and thereby the pressure build-up. Then the fabric flows through the Mahlzone 3 and leaves the refiner through the outlet 4.
  • the housing 6 consists here of a displaceable in the axial direction ring on the a wedge 10 is attached.
  • the refining plates are with another wedge 11 connected, whereby by the displacement of the ring 9, a setting of the grinding gap 3 takes place.
  • Fig. 2 shows an analogously constructed refiner, in which case the material supply takes place laterally.
  • the fabric flows through the laterally arranged Inlet 1 in the refiner and is through a disc 8 to the shaft diverted. There he becomes by the wall friction or by special Internals accelerated and enters the substance supply channel 7 between Disc 8 and rotor 5, wherein channel 7 acts as an acceleration zone. In this acceleration zone there is a further acceleration in Circumferential direction and thus the required pressure build-up. Of the Pressure build-up is in the range of 1.5 to 2 bar.
  • the material flows through the grinding zone 3 and leaves the Refiner through the inlet 1 opposite outlet 4. Again the adjustment of the grinding gap 3 by the displaceable arranged wedges 10 and 11th
  • Fig. 3 and Fig. 4 show analog refiner to Fig. 2, wherein at the same Cloth guide in Fig. 3 is a conical refiner with a widening Cone cone and in Fig. 4 a conical or cone refiner with a tapered cone is shown.
  • Fig. 5 the operation of a refiner is shown with double rotor.
  • the substance flows through the as Hollow shaft formed inlet 1 through the rotor 5 to the center arranged fabric feed channel 2.
  • the pressure build-up By the acceleration of the substance in the circumferential direction in the hollow shaft of the inlet 1 and in Stoffzuschreibkanal 2 here is the pressure build-up.
  • the adjustment of the grinding gap 23 takes place here again by means of an axially displaceable ring 9.
  • the possibility of acting over the entire length wedge 10 or Counterpart 11 connected to the refining plates is here in a wedge 10a and wedge 10b split wedge 10.
  • the counterpart 11 has corresponding wedge-shaped surfaces. This is a better and better way more uniform distribution of force achievable.
  • FIGS. 6 and 7 provide a refiner analogous to FIG. 5 Bicone, wherein the cone shape from the material supply channel 2 from seen to the outlet 4a and 4b is expanded in Fig. 6 and in Fig. 7 is formed tapering.
  • FIG. 8 Another possibility is the embodiment of FIG. 8, wherein here the material on both sides through the inlet 1a and 1b in the direction of the shaft fed and deflected by the disc 8 in the fabric feed channel 7 becomes. From there, the material enters the grinding gap 3 on both sides and becomes central discharged via the outlet 4. The same stuff is also with one Bicone possible, this from the outer inlet to the center Outlet as an either expanding or tapering cone can be provided.
  • Fig. 9 shows the example of a refiner with double rotor and as a hollow shaft trained axial inlet 1, the combination of cylindrical and conical grinding zones.
  • the Flow also on both sides through an inlet with a diverter take place through a disk and the outlet be centrally located.
  • Figs. 10 to 13 illustrate the combination of cylindrical and cone-shaped grinding zones on a rotor dar.
  • the flow either first through the cylinder (FIG. 11, FIG. 12) or first through a cone part (Fig. 10, Fig. 13), the cone either expanding (FIG. 10, FIG. 12) or tapering (FIG. 11, FIG. 13) is.
  • the definition of widening or tapering for the cone is always done in the flow direction of the substance.
  • Fig. 14 shows a section along line A-A in Fig. 5. It can be seen here Internals 12, which are also referred to as blades or wings can. These baffles 12 divide the fabric feed channel 2 into individual ones Stoffzuschreibkanäle 2 'through which the pulp suspension from central inlet 1 to the outer grinding gap 3 is guided. By these baffles 12, here as wedges made of full material are formed, the pulp suspension is additionally accelerated and it there is an increase in pressure.
  • the internals 12 but can also be hollow be rounded or rounded on its surface, i. formed scoop-shaped be. Such internals 12 can also be used in the material channel 7 e.g. of the Embodiments of Fig. 1 - 4, or 8, 10 - 13 as well as the Fig. 5 analogous embodiments of FIGS. 6, 7 and 9 are used.

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Abstract

A refiner including a rotor and a stator defining a cylindrical or conical refining gap therebetween. A pulp feed channel extends in a radial direction from an inlet pipe to the refining gap.

Description

Die Erfindung betrifft einen Refiner zur Mahlung einer Zellstoffsuspension bestehend aus einem Rotor und Stator mit einem Einlaßrohr und einem zylinder- oder kegelförmigen Mahlspalt zwischen Rotor und Stator.The invention relates to a refiner for grinding a pulp suspension consisting of a rotor and stator with an inlet tube and a cylindrical or conical grinding gap between rotor and stator.

Zur Zeit werden Refiner meist in der Bauform der (Doppel-) Scheibe oder des Kegels ausgeführt. Die Nachteile des Doppelscheibenrefiners sind die sich verändernde relative Geschwindigkeit entlang der Mahlzone, eine relativ hohe Leerlaufleistung und besonders bei niedrigen Durchsätzen Probleme mit der Zentrierung des Rotors. Ein bedeutender Nachteil des bekannten Kegelrefiners ist die schlechte Pumpwirkung. Daraus folgen Durchsatzprobleme und in weiterer Folge die Notwendigkeit, die Nuten in der Mahlzone zu vergrößern, was eine Verringerung der Kantenlänge bewirkt. Als weitere Nachteile können die relative Verschiebung der Messer beim Anstellen zueinander, die Notwendigkeit einer robusten Bauweise aufgrund der auftretenden Lagerkräfte und der Schwierigkeiten beim Garniturwechsel gesehen werden, die zu hohen Herstellungskosten führen. Durch einen Zylinderrefiner, wie er z.B. aus der US 5,813,618 bekannt ist, können viele dieser Nachteile vermieden werden, doch sind ähnlich wie beim Kegelrefiner Durchsatzprobleme zu erwarten. Weiters sind aus der GB-A- 1407712 und der US-A-4401280 Refiner zur Mahlung von Hackschnitzeln bzw. hochviskosen Medien bekannt, wobei die Zufuhr der Medien in den Refiner mittels Schneckenförderern erfolgt. Diese Refiner sind zur Mahlung einer Zellstoffsuspension nicht geeignet.At present refiner are usually in the design of the (double) disk or of the cone. The disadvantages of the double disc refiner are the changing relative velocity along the grinding zone, a relatively high idling power and especially at low flow rates Problems with the centering of the rotor. A significant disadvantage of known Kegelrefiners is the poor pumping action. Follow from it Throughput problems and, subsequently, the need for the grooves in To increase the refining zone, reducing the edge length causes. As further disadvantages, the relative displacement of the Knives when hiring each other, the need for a robust Construction due to the bearing forces and the difficulties to be seen when changing the set, which leads to high production costs to lead. By a cylindrical refiner, as e.g. from US 5,813,618 Many of these disadvantages can be avoided, but are similar to the cone refiner to expect throughput problems. Furthermore, from GB-A-1407712 and US-A-4401280 refiner for grinding known from wood chips or high-viscosity media, the supply the media takes place in the refiner by means of screw conveyors. These Refiner are not suitable for grinding a pulp suspension.

Ziel der Erfindung ist es daher, die Nachteile der bekannten Zylinder- und Kegelrefiner zu umgehen um auch in weiterer Folge hohe Durchsätze zu ermöglichen.
Die Erfindung ist daher dadurch gekennzeichnet, daß sich der Stoffzufuhrkanal vom Einlaßrohr zum Mahlspalt hin in radialer Richtung erstreckt, wobei im Stoffzufuhrkanal und/oder Einlaßrohr Einbauten, insbesondere Schaufeln, angeordnet sind. Der zugeführte Stoff wird hier durch die Rotation des Rotors in Umfangsrichtung beschleunigt, wodurch ein Druckanstieg in der Flüssigkeit bewirkt wird. Durch diesen Druckaufbau kann man einerseits die Zuführpumpe einsparen andererseits erfolgt dadurch eine gute rotationssymetrische Anströmung. Durch die erfindungsgemäßen Einbauten im Einlaßrohr oder im Stoffzufuhrkanal kann die Beschleunigung der Flüssigkeit zusätzlich zu den Effekten der Wandreibung noch wesentlich verstärkt werden.The aim of the invention is therefore to avoid the disadvantages of the known cylinder and cone refiner to allow high throughputs as a result.
The invention is therefore characterized in that the material supply channel extends from the inlet pipe to the grinding gap in the radial direction, wherein in the material supply channel and / or inlet pipe internals, in particular blades, are arranged. The supplied material is here accelerated by the rotation of the rotor in the circumferential direction, whereby an increase in pressure in the liquid is effected. On the one hand, this supply of pressure can save the feed pump and, on the other hand, a good rotationally symmetrical flow is achieved. By the internals according to the invention in the inlet pipe or in the material supply channel, the acceleration of the liquid can be significantly enhanced in addition to the effects of wall friction.

Eine vorteilhafte Ausgestaltung der Erfindung ist dadurch gekennzeichnet, daß der Stoffzufuhrkanal rotationssymetrisch ausgebildet ist. Dadurch ergibt sich eine gleichmäßige und rotationssymetrische Anströmung der Mahlspalte.An advantageous embodiment of the invention is characterized in that that the substance supply channel is formed rotationally symmetrical. Thereby results in a uniform and rotationally symmetrical flow of the Grinding gaps.

Eine vorteilhafte Weiterbildung der Erfindung ist dadurch gekennzeichnet, daß das mit dem Stoffzufuhrkanal verbundene Einlaßrohr eine Achse aufweist, die mit der Achse des Rotors zusammenfällt. Auf diese Weise erfolgt die Stoffzufuhr direkt in der Achse des Refiners, wodurch der Stoff einerseits bereits teilweise im Rohr vor Eintritt in den Stoffzufuhrkanal beschleunigt wird und andererseits eine noch gleichmäßigere Verteilung des Stoffes bewirkt wird.An advantageous development of the invention is characterized in that in that the inlet pipe connected to the material supply channel has an axis has, which coincides with the axis of the rotor. In this way the substance feed takes place directly in the axis of the refiner, which causes the substance on the one hand already partly in the tube before entering the substance supply channel is accelerated and on the other hand an even more even distribution of the substance is effected.

Eine günstige Weiterbildung der Erfindung ist dadurch gekennzeichnet, daß zwischen Einlaßrohr und Mahlspalt eine Scheibe vorgesehen ist, die den Stoffzufuhrkanal begrenzt. Erfolgt die Stoffzufuhr außerhalb der Achse, so wird durch die Scheibe der Stoff an der Welle umgelenkt und rotationssymetrisch nach außen geführt, wobei hier zwischen Scheibe und Rotorstirnfläche die Beschleunigung der Flüssigkeit radial nach außen erfolgt und anschließend die Flüssigkeit in den Mahlspalt gleichmäßig verteilt einströmt. Eine günstige Ausgestaltung der Erfindung ist dadurch gekennzeichnet, daß ein zylindrischer Rotor vorgesehen ist. Es kann auch ein sich in Strömungsrichtung des Stoffes erweiternder Kegelrotor oder alternativ ein sich in Strömungsrichtung des Stoffes verjüngender Kegelrotor vorgesehen sein. Je nach Erfordernis kann somit die geeignete Form des Mahlspalts eingesetzt werden.A favorable development of the invention is characterized in that that between the inlet pipe and the grinding gap, a disc is provided which limited the substance supply channel. If the substance supply outside the Axis, so the material is deflected by the disc on the shaft and rotationally symmetrical led to the outside, here between disc and Rotor face the acceleration of the liquid radially outward takes place and then the liquid in the Mahlspalt evenly distributed flows. A favorable embodiment of the invention is characterized in that that a cylindrical rotor is provided. It can also be a turn in Flow direction of the material expanding conical rotor or alternatively a tapered conical rotor in the flow direction of the substance be provided. Depending on the requirement, the appropriate form of the Mahlspalts be used.

Eine vorteilhafte Weiterbildung der Erfindung ist dadurch gekennzeichnet, daß ein Doppelrotor vorgesehen ist. Bei einem Doppelrotor, bei dem der Rotor sowohl zylinderförmig als auch kegelförmig (erweiternder Konus bzw. verjüngender Konus) ausgeführt sein kann, kann ein großer Durchsatz erzielt werden, wobei ebenfalls eine gleichmäßige rotationssymetrische Anströmung der Mahlspalte erfolgt.An advantageous development of the invention is characterized in that that a double rotor is provided. In a double rotor, in which the Rotor both cylindrical and conical (expanding cone or tapering cone) may be a large Throughput can be achieved, where also a uniform rotationally symmetrical flow of Mahlspalte done.

Eine günstige Weiterbildung der Erfindung ist dadurch gekennzeichnet, daß der Stoffzufuhrkanal zwischen den beiden Rotoren angeordnet ist. Speziell bei Verwendung eines Einlaßrohrs, das sich in der Achse eines Rotors befindet kann der Stoff in die Mitte des Refiners zugeführt und dort durch die Rotation nach außen geführt werden, was zu einem entsprechenden Druckanstieg führt. In weitere Folge wird der Stoff mittig in den entsprechenden Mahlspalt eingeführt, wodurch eine weitere Vergleichmäßigung der Stoffzufuhr erreicht wird.A favorable development of the invention is characterized in that in that the substance feed channel is arranged between the two rotors. Especially when using an inlet tube, which is in the axis of a Rotor is located, the fabric can be fed to the center of the refiner and there be guided by the rotation to the outside, resulting in a corresponding increase in pressure leads. In further consequence the material becomes centered introduced into the corresponding Mahlspalt, creating another Homogenization of the feed is achieved.

Eine vorteilhafte Ausgestaltung der Erfindung ist dadurch gekennzeichnet, daß ein zylindrischer und ein kegelförmiger Mahlspalt aneinandergereiht sind. Die Aneinanderreihung eines zylindrischen und eines kegelförmigen Mahlspaltes kann entweder auf einem Rotor oder unter Verwendung von zwei hintereinanderliegenden unterschiedlichen Rotoren erreicht werden. In beiden Fällen ist die Reihenfolge der Aneinanderreihung beliebig und nur von den zu erzielenden Stoffeigenschaften abhängig. An advantageous embodiment of the invention is characterized in that that a cylindrical and a conical grinding gap lined up are. The juxtaposition of a cylindrical and a conical Mahlspaltes can either be on a rotor or using two consecutive different rotors can be achieved. In both cases, the sequence of the sequence is arbitrary and only dependent on the material properties to be achieved.

Im folgenden wird die Erfindung an Hand der Zeichnungen beispielhaft beschrieben, wobei Fig. 1 eine Variante mit axialer Stoffzufuhr, Fig. 2 eine Variante mit seitlicher Stoffzufuhr, Fig. 3 eine analoge Variante zu Fig. 2 mit Kegelrotor, Fig. 4 eine weitere Variante mit Kegelrotor, Fig. 5 eine Variante mit zylindrischem Doppelrotor und axialer Stoffzufuhr, Fig. 6 und Fig. 7 eine Variante mit Doppelkegelrotoren sowohl verjüngend als auch erweiternd und axialer Stoffzufuhr, Fig. 8 eine Variante mit zylindrischem Doppelrotor und seitlicher Stoffzufuhr, Fig. 9 eine Variante mit axialer Stoffzufuhr und Doppelrotor bestehend aus Zylinder- und Kegelrotor, Fig. 10, Fig. 11, Fig. 12, Fig. 13 Varianten mit unterschiedlicher Hintereinanderschaltung von zylindrischen und kegelförmigen Mahlspalt auf einem Rotor und Fig. 14 einen Schnitt gemäß Linie A-A in Fig. 5 darstellt.In the following the invention with reference to the drawings by way of example 1, a variant with axial material supply, Fig. 2 a Variant with lateral material supply, Fig. 3 shows an analogous variant to Fig. 2 with conical rotor, Fig. 4 shows a further variant with conical rotor, Fig. 5 a Variant with cylindrical double rotor and axial material supply, Fig. 6 and Fig. 7 shows a variant with double bevel rotors both tapered and expanding and axial material supply, Fig. 8 shows a variant with cylindrical Double rotor and lateral material supply, Fig. 9 shows a variant with axial Fuel supply and double rotor consisting of cylinder and cone rotor, Fig. 10, Fig. 11, Fig. 12, Fig. 13 variants with different Connected in series of cylindrical and conical grinding gap on a rotor and Fig. 14 is a section along line A-A in Fig. 5th represents.

Fig. 1 zeigt einen erfindungsgemäßen Refiner mit Einlaß 1, Stoffzufuhrkanal 7, Mahlzone 3, Auslauf 4, Rotor 5 und Stator 6. Der Stoff strömt hier durch den Einlaß 1, der in der Achse des Rotors 5 angeordnet ist, zentral in den Refiner. In der Beschleunigungszone 7 zwischen Rotor 5 und Gehäuse 6 erfolgt durch Wandreibung oder durch spezielle Einbauten (siehe Fig. 14) eine Beschleunigung des Stoffes in Umfangsrichtung und dadurch der Druckaufbau. Anschließend fließt der Stoff durch die Mahlzone 3 und verläßt den Refiner durch den Auslaß 4. Das Gehäuse 6 besteht hier aus einem in axialer Richtung verschiebbaren Ring, auf dem ein Keil 10 befestigt ist. Die Mahlplatten sind mit einem weiteren Keil 11 verbunden, wobei durch die Verschiebung des Ringes 9 eine Einstellung des Mahlspalts 3 erfolgt. 1 shows a refiner according to the invention with inlet 1, Cloth feed channel 7, grinding zone 3, outlet 4, rotor 5 and stator 6. The substance flows through the inlet 1, which is arranged in the axis of the rotor 5 is, centrally in the refiner. In the acceleration zone 7 between rotor 5 and housing 6 is made by wall friction or by special installations (see Fig. 14) an acceleration of the fabric in the circumferential direction and thereby the pressure build-up. Then the fabric flows through the Mahlzone 3 and leaves the refiner through the outlet 4. The housing 6 consists here of a displaceable in the axial direction ring on the a wedge 10 is attached. The refining plates are with another wedge 11 connected, whereby by the displacement of the ring 9, a setting of the grinding gap 3 takes place.

Fig. 2 zeigt einen analog aufgebauten Refiner, wobei hier die Stoffzufuhr seitlich erfolgt. Der Stoff strömt dabei durch den seitlich angeordneten Einlaß 1 in den Refiner und wird durch eine Scheibe 8 zur Welle umgelenkt. Dort wird er durch die Wandreibung oder durch spezielle Einbauten beschleunigt und tritt in den Stoffzufuhrkanal 7 zwischen Scheibe 8 und Rotor 5 ein, wobei Kanal 7 als Beschleunigungszone wirkt. In dieser Beschleunigungszone erfolgt eine weitere Beschleunigung in Umfangsrichtung und dadurch der erforderliche Druckaufbau. Der Druckaufbau bewegt sich dabei im Bereich von 1,5 bis 2 bar. Anschließend fließt der Stoff durch die Mahlzone 3 und verläßt den Refiner durch den dem Einlaß 1 gegenüberliegenden Auslaß 4. Auch hier erfolgt die Einstellung des Mahlspaltes 3 durch die verschiebbar angeordneten Keile 10 und 11.Fig. 2 shows an analogously constructed refiner, in which case the material supply takes place laterally. The fabric flows through the laterally arranged Inlet 1 in the refiner and is through a disc 8 to the shaft diverted. There he becomes by the wall friction or by special Internals accelerated and enters the substance supply channel 7 between Disc 8 and rotor 5, wherein channel 7 acts as an acceleration zone. In this acceleration zone there is a further acceleration in Circumferential direction and thus the required pressure build-up. Of the Pressure build-up is in the range of 1.5 to 2 bar. Subsequently, the material flows through the grinding zone 3 and leaves the Refiner through the inlet 1 opposite outlet 4. Again the adjustment of the grinding gap 3 by the displaceable arranged wedges 10 and 11th

Fig. 3 und Fig. 4 zeigen analoge Refiner zu Fig. 2, wobei bei gleicher Stofführung in Fig. 3 ein konischer Refiner mit einem sich erweiternden Kegelkonus und in Fig. 4 ein konischer oder Kegelrefiner mit einem sich verjüngendem Konus dargestellt ist.Fig. 3 and Fig. 4 show analog refiner to Fig. 2, wherein at the same Cloth guide in Fig. 3 is a conical refiner with a widening Cone cone and in Fig. 4 a conical or cone refiner with a tapered cone is shown.

In Fig. 5 ist die Funktionsweise eines Refiners mit Doppelrotor dargestellt. In der hier vorliegenden Ausführung strömt der Stoff durch den als Hohlwelle ausgebildeten Einlaß 1 durch den Rotor 5 zum in der Mitte angeordneten Stoffzufuhrkanal 2. Durch die Beschleunigung des Stoffes in Umfangsrichtung in der Hohlwelle des Einlasses 1 und im Stoffzufuhrkanal 2 erfolgt hier der Druckaufbau. Anschließend strömt der Stoff durch die Mahlzone nach außen und verläßt den Refiner durch die beiden Auslässe 4a bzw. 4b. Die Verstellung des Mahlspaltes 23 erfolgt auch hier wiederum mittels eines axial verschiebbaren Ringes 9. Neben der Möglichkeit eines über die gesamte Länge wirkenden Keils 10 bzw. mit den Mahlplatten verbundenen Gegenstück 11 ist hier ein in Keil 10a und Keil 10b aufgeteilter Keil 10 dargestellt. Das Gegenstück 11 weist entsprechende keilförmige Flächen auf. Dadurch ist eine bessere und gleichmäßigere Kraftverteilung erzielbar.In Fig. 5, the operation of a refiner is shown with double rotor. In the present embodiment, the substance flows through the as Hollow shaft formed inlet 1 through the rotor 5 to the center arranged fabric feed channel 2. By the acceleration of the substance in the circumferential direction in the hollow shaft of the inlet 1 and in Stoffzufuhrkanal 2 here is the pressure build-up. Then flows the Material through the grinding zone to the outside and leaves the refiner through the two outlets 4a and 4b. The adjustment of the grinding gap 23 takes place here again by means of an axially displaceable ring 9. In addition the possibility of acting over the entire length wedge 10 or Counterpart 11 connected to the refining plates is here in a wedge 10a and wedge 10b split wedge 10. The counterpart 11 has corresponding wedge-shaped surfaces. This is a better and better way more uniform distribution of force achievable.

Die Fig. 6 und 7 stellen einen zu Fig. 5 analog aufgebauten Refiner mit Doppelkegel dar, wobei die Kegelform vom Stoffzufuhrkanal 2 aus gesehen zum Auslaß 4a bzw. 4b sich in Fig. 6 erweitert und in Fig. 7 verjüngend ausgebildet ist.FIGS. 6 and 7 provide a refiner analogous to FIG. 5 Bicone, wherein the cone shape from the material supply channel 2 from seen to the outlet 4a and 4b is expanded in Fig. 6 and in Fig. 7 is formed tapering.

Die Funktionsweise entspricht der Funktion des in Fig. 5 dargestellten Doppelzylinderrefiners.The operation corresponds to the function of that shown in Fig. 5 Doppelzylinderrefiners.

Eine weitere Möglichkeit stellt die Ausführung gemäß Fig. 8 dar, wobei hier der Stoff beidseitig durch den Einlaß 1a bzw. 1b in Richtung Welle zugeführt und durch die Scheibe 8 in den Stoffzufuhrkanal 7 umgelenkt wird. Von dort tritt der Stoff beidseitig in den Mahlspalt 3 und wird zentral über den Auslaß 4 abgeführt. Die gleiche Stofführung ist auch mit einem Doppelkegel möglich, wobei dieser vom äußeren Einlaß zum mittigen Auslaß hin als ein sich entweder erweiternder oder verjüngender Konus vorgesehen sein kann.Another possibility is the embodiment of FIG. 8, wherein here the material on both sides through the inlet 1a and 1b in the direction of the shaft fed and deflected by the disc 8 in the fabric feed channel 7 becomes. From there, the material enters the grinding gap 3 on both sides and becomes central discharged via the outlet 4. The same stuff is also with one Bicone possible, this from the outer inlet to the center Outlet as an either expanding or tapering cone can be provided.

Fig. 9 zeigt am Beispiel eines Refiners mit Doppelrotor und als Hohlwelle ausgebildetem axialen Einlaß 1 die Kombination von zylindrischen und kegelförmigen Mahlzonen. Neben der dargestellten Variante kann die Anströmung ebenfalls beidseitig durch einen Einlaß mit einer Umlenkung durch eine Scheibe erfolgen und der Auslaß zentral angeordnet sein.Fig. 9 shows the example of a refiner with double rotor and as a hollow shaft trained axial inlet 1, the combination of cylindrical and conical grinding zones. In addition to the illustrated variant, the Flow also on both sides through an inlet with a diverter take place through a disk and the outlet be centrally located.

Die Fig. 10 bis 13 stellen die Kombination von zylindrischen und kegelförmigen Mahlzonen auf einem Rotor dar. Dabei kann die Strömung entweder zuerst durch den Zylinder- (Fig. 11, Fig. 12) oder zuerst durch einen Kegelteil (Fig. 10, Fig. 13) erfolgen, wobei der Kegel entweder erweiternd (Fig. 10, Fig. 12) oder verjüngend (Fig. 11, Fig. 13) ausgebildet ist. Die Definition erweiternd oder verjüngend für den Kegel erfolgt immer in Strömungsrichtung des Stoffes.Figs. 10 to 13 illustrate the combination of cylindrical and cone-shaped grinding zones on a rotor dar. Here, the flow either first through the cylinder (FIG. 11, FIG. 12) or first through a cone part (Fig. 10, Fig. 13), the cone either expanding (FIG. 10, FIG. 12) or tapering (FIG. 11, FIG. 13) is. The definition of widening or tapering for the cone is always done in the flow direction of the substance.

Fig. 14 zeigt einen Schnitt gemäß Linie A-A in Fig. 5. Man erkennt hier die Einbauten 12, die auch als Schaufeln oder Flügel bezeichnet werden können. Diese Einbauten 12 teilen den Stoffzufuhrkanal 2 in einzelne Stoffzufuhrkanäle 2' auf, durch die die Faserstoffsuspension vom zentralen Einlass 1 zum außen liegenden Mahlspalt 3 geführt wird. Durch diese Einbauten 12, die hier als aus vollem Material bestehende Keile ausgebildet sind, wird die Stoffsuspension zusätzlich beschleunigt und es findet eine Druckerhöhung statt. Die Einbauten 12 können aber auch hohl sein oder an ihrer Oberfläche gerundet, d.h. schaufelförmig ausgebildet sein. Derartige Einbauten 12 können auch im Stoffkanal 7 z.B. der Ausführungsvarianten nach Fig. 1 - 4, oder 8, 10 - 13 wie auch den zu Fig. 5 analogen Ausführungen der Fig. 6, 7 und 9 eingesetzt werden.Fig. 14 shows a section along line A-A in Fig. 5. It can be seen here Internals 12, which are also referred to as blades or wings can. These baffles 12 divide the fabric feed channel 2 into individual ones Stoffzufuhrkanäle 2 'through which the pulp suspension from central inlet 1 to the outer grinding gap 3 is guided. By these baffles 12, here as wedges made of full material are formed, the pulp suspension is additionally accelerated and it there is an increase in pressure. The internals 12 but can also be hollow be rounded or rounded on its surface, i. formed scoop-shaped be. Such internals 12 can also be used in the material channel 7 e.g. of the Embodiments of Fig. 1 - 4, or 8, 10 - 13 as well as the Fig. 5 analogous embodiments of FIGS. 6, 7 and 9 are used.

Claims (10)

  1. Refiner for a pulp suspension comprising a rotor and a stator with an inlet pipe and a cylindrical or conical refining gap between the rotor and the stator, characterised by the pulp feed channel (2, 7) extending in radial direction from the inlet pipe (1) up to the refining gap (3), with the pulp feed channel (2, 7) and/or inlet pipe (1) having internals (12), especially paddles.
  2. Refiner according to Claim 1, characterised by the pulp feed channel (2, 7) having a rotationally symmetrical design.
  3. Refiner according to Claim 1 or 2, characterised by the inlet pipe (1) connected to the pulp feed channel (2) being on an axis which coincides with the axis of the rotor.
  4. Refiner according to Claim 1 or 2, characterised by a disc (8) being provided between the inlet pipe (1) and the refining gap (3) which limits the pulp feed channel (7).
  5. Refiner according to one of Claims 1 to 4, characterised by a cylindrical rotor (5) being provided.
  6. Refiner according to one of Claims 1 to 4, characterised by a conical rotor (5), widening in the flow direction of the pulp, being provided.
  7. Refiner according to one of Claims 1 to 4, characterised by a conical rotor (5), narrowing in the flow direction of the pulp, being provided.
  8. Refiner according to one of Claims 1 to 7, characterised by a twin rotor (5) being provided.
  9. Refiner according to Claim 8, characterised by the pulp feed channel (2) being located between the two rotors (5).
  10. Refiner according to one of Claims 1 to 9, characterised by a cylindrical and a conical refining gap (3) being arranged in series.
EP01101560A 2000-02-03 2001-01-25 Refiner Expired - Lifetime EP1122356B1 (en)

Priority Applications (1)

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AT01101560T ATE302874T1 (en) 2000-02-03 2001-01-25 REFINER

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AT0016800A AT408769B (en) 2000-02-03 2000-02-03 REFINER
AT168002000 2000-02-03

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EP1122356A2 EP1122356A2 (en) 2001-08-08
EP1122356A3 EP1122356A3 (en) 2001-11-28
EP1122356B1 true EP1122356B1 (en) 2005-08-24

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US (1) US6637686B2 (en)
EP (1) EP1122356B1 (en)
CN (1) CN1201048C (en)
AT (2) AT408769B (en)
BR (1) BR0100357A (en)
CA (1) CA2333799A1 (en)
DE (1) DE50107162D1 (en)
ES (1) ES2246939T3 (en)

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DE102005013693A1 (en) 2005-03-21 2006-09-28 Cvp Clean Value Plastics Gmbh Process and plant for producing a pulp from agglomerated mixed plastic
SE530009C2 (en) * 2006-06-01 2008-02-05 Metso Paper Inc Apparatus for the alignment of a grinder's shaft device
FI121963B (en) * 2009-07-03 2011-06-30 Metso Paper Inc refiner
CN103061190B (en) * 2013-01-16 2015-01-07 苏州飞宇精密科技股份有限公司 Cylindrical single-grinding grinder
CN103061189B (en) * 2013-01-16 2015-01-07 苏州飞宇精密科技股份有限公司 Cylindrical pulping machine with double pulping areas
CN103362013A (en) * 2013-04-03 2013-10-23 上海尚鼎机械科技有限公司 Gap adjustment optimizing structure of cylindrical refiner
CN104480767B (en) * 2014-11-10 2016-11-09 合肥宏图彩印有限公司 A kind of hold-down mechanism in cylinder fiberizer
CN104452400B (en) * 2014-11-10 2016-11-09 合肥宏图彩印有限公司 A kind of hold-down mechanism for lava flybar
CN105908554B (en) * 2015-08-26 2019-01-18 李军 Column type defibering fiberizer
DE102015118858B3 (en) * 2015-11-04 2017-02-09 Netzsch-Feinmahltechnik Gmbh Crushing device and method for comminuting raw materials
CN113529466A (en) * 2020-04-14 2021-10-22 郑州运达造纸设备有限公司 Take high frequency of preprocessing function to fluffer
CN113058681B (en) * 2021-04-16 2022-09-30 哈尔滨工程北米科技有限公司 Germ-remaining rice processing method

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FI85391C (en) * 1989-10-05 1992-04-10 Sunds Defibrator Jylha Oy Konraffinör
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AT408768B (en) * 2000-02-03 2002-03-25 Andritz Ag Maschf REFINER FOR MILLING FIBER FIBERS

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Publication number Publication date
US20010020660A1 (en) 2001-09-13
AT408769B (en) 2002-03-25
EP1122356A3 (en) 2001-11-28
BR0100357A (en) 2001-10-02
ATE302874T1 (en) 2005-09-15
ES2246939T3 (en) 2006-03-01
EP1122356A2 (en) 2001-08-08
CN1311370A (en) 2001-09-05
CA2333799A1 (en) 2001-08-03
DE50107162D1 (en) 2005-09-29
CN1201048C (en) 2005-05-11
US6637686B2 (en) 2003-10-28
ATA1682000A (en) 2001-07-15

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