EP1147804A1 - Apparatus to disperse a high consistency paper fibers slurry and linings for this apparatus - Google Patents

Apparatus to disperse a high consistency paper fibers slurry and linings for this apparatus Download PDF

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Publication number
EP1147804A1
EP1147804A1 EP01103920A EP01103920A EP1147804A1 EP 1147804 A1 EP1147804 A1 EP 1147804A1 EP 01103920 A EP01103920 A EP 01103920A EP 01103920 A EP01103920 A EP 01103920A EP 1147804 A1 EP1147804 A1 EP 1147804A1
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EP
European Patent Office
Prior art keywords
rotor
axial
garniture
teeth
projection
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Granted
Application number
EP01103920A
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German (de)
French (fr)
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EP1147804B1 (en
Inventor
Volker Niggl
Roland Rauch
Josef Schneid
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Voith Patent GmbH
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Voith Paper Patent GmbH
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Classifications

    • 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
    • D21D1/004—Methods of beating or refining including disperging or deflaking
    • D21D1/006—Disc mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B01F23/56—Mixing liquids with solids by introducing solids in liquids, e.g. dispersing or dissolving
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/271—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator
    • B01F27/2711—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator provided with intermeshing elements
    • 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
    • D21D1/30—Disc mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B01F23/57—Mixing high-viscosity liquids with solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/75—Discharge mechanisms

Definitions

  • the invention relates to a device for dispersion according to the preamble of Claim 1.
  • Such a treatment device is for example from DE-PS 30 47 013 known.
  • This device which is suitable for dispersing waste paper, serves the purpose of Machining material intensively mechanically and thermally, which means that the contained therein Contaminants detached from the fibers, crushed and / or below the visibility limit can be brought.
  • the pulp is not in a pumpable suspension processed, but in the form of a doughy or crumbly high consistency substance, preferably with a dry content between 20 and 35%. Let it this way significantly higher shear forces are transferred to the pulp, causing the mentioned goals are achievable without a significant change in the process Fiber length is done.
  • the effect of mechanical treatment further intensified by heat, e.g. by setting a fiber temperature of 90 ° Celsius or above.
  • the Dispersion After the highly consistent fiber material has passed the processing area, i.e. the Dispersion has occurred, it emerges at the last stage of the stator set. there it is pushed out by the following substance and essentially leads one radial movement. Because the set contains circular rows of teeth, this is done the ejection of the fiber over the entire circumference, i.e. 360 °. As a rule, that is The central axis of such a dispersing device is arranged horizontally, i.e. the The pulp is transported in a vertical plane. Where the tooth gaps between the teeth, the fabric falls out freely, e.g. in a vessel, in which, if desired, can be diluted with water.
  • the invention is therefore based on the object of a treatment device specified type, with which it is possible to discharge the processed To improve fiber with very simple means.
  • the subject of the invention also has the advantage of being relatively inexpensive Wear behavior. It is about reducing the wear and tear As is well known, such devices cannot be avoided entirely. The fact that the Substance is removed relatively quickly, caking, which the Favor wear, be prevented. It is particularly advantageous if the Radial projections belong to the part of the set that is due to the inevitable Wear must be replaced at certain intervals anyway. To this Because normal wear is limited to a few parts, while the other machine parts, especially the mounting plates for the sets, only still subject to very little wear.
  • Fig. 1 shows part of a dispersing device with two relative to each other in Circumferential direction movable complementary sets 1, 2, so together in Intervention that they can work together.
  • the selected representation in form A section in side view shows that radially from the inside out the teeth 3, 4, 3 ', 4' etc. belonging to the different sets up to Alternate external teeth 3 ", 4".
  • the teeth row of a set extends into the Intermediate space of the complementary set, whereby for the intended operation the device between the teeth of complementary sets of distances must be observed.
  • the set 2 shown on the left belongs to the stator 6 and the set 1 shown on the right for the rotor 5. This is driven by a shaft 10 held and set in rotation.
  • the highly consistent paper pulp gets through the inlet pipe 9 with the aid of a screw conveyor 12 centrally in the disperser.
  • On such material is relatively tough, unlike e.g. a pumpable paper fiber suspension, how it is processed in deflakers or refiners. It is initially from Sclhleuder Regen 11 captured and then conveyed into the sets.
  • the radially innermost Row of teeth belongs to the rotor assembly and the radially outermost one to the stator assembly.
  • the axis of rotation of the rotor 5 lies horizontally here, and the radial transport direction of the highly consistent paper pulp lies in vertical planes.
  • the trimmings are in a housing 13 housed.
  • a centering collar 16 is used for exact centering of the clothing 1 belonging to the rotor provided, but not by the outside diameter of this set, but by the measure h (see Fig. 3) lies further inside.
  • the diameter of the rotor 5 can therefore be smaller can be kept as that of the set 1. This saves material, and the surfaces of the Centering cuffs are outside the sling path of the fabric.
  • This carries a number the axial projections 15 according to the invention, which from the set of fittings Accelerate and dissipate emerging fibers.
  • Such axial projections 15 can made of the same material as the set, e.g. with little extra effort be cast on. Also because of the possible wear, it is advantageous if the Axial projections 15 are exchanged when changing the clothing.
  • Fig. 2 are two complementary sets, ie belonging to a set in axial exploded location and a little more detailed, but without all to reveal constructive features.
  • sets of this type between three and twelve rows of teeth, here only the radially outermost two are drawn.
  • the clothing 1 belonging to the rotor has axial projections 15 an outer root circle 21. They have an axial extension a of preferably at least 4 mm and a radial extension b to the base circle 21 of preferably at least 4 mm.
  • the maximum size should not be more than 20 mm each of course also depends on the size of the sets.
  • the axial projections are sufficient here axially to the plane E of the bearing surface 20 of the set. That is in the making of the Sets of particular advantage. But there are also different axial projections can easily be used to solve the task.
  • Your outer end faces are inclined at an acute angle ⁇ with respect to the cylindrical peripheral surface.
  • Fig. 3 shows in supervision a Disperger gear set, ie a rotor and one Stator assembly.
  • the annular spaces 14 can be seen.
  • the teeth 3, 3 ', 3 ", 4, 4 ', 4" are arranged in annular rows and extend into the corresponding ones Spaces 14 of the counter set into it. Only a few of the large number of teeth shown. They are drawn cut so that they are preferably not rounder Cross section 17 can be seen. Tooth gaps 7 remain between adjacent teeth the flow of the pulp free.
  • the shape of the teeth is not exactly drawn, they is known and depends on the intended use of the set.
  • FIG. 4 shows also a little more precise that this is a total of eight segments Set acts, which each go over a circumferential angle of 45 °.
  • mounting holes 8 are indicated, through which e.g. a screw connection to the rotor 5 (Fig. 1) is possible.
  • the axial projections 15, which in the example shown here four per segment, i.e. so 32 in total for the whole set are provided. The exact number of axial protrusions required depends on the requirements.
  • Adjacent axial projections 15 are in one Distance angle ⁇ apart. Furthermore, one can recognize the on this representation Centering 16, which is contiguous here over the entire scope of all Set segments is designed. It may also be interrupted, i.e. out a number of different subsections exist. Such a centering collar is This is particularly important when the set of circular ring segments forms a full circle is assembled. The combination of the axial projections with the radial inner centering collar results in a space-saving arrangement with good Conveying effect for the tough fibrous material emerging from the clothing.
  • the axial projection 15 can also be designed so that it is extends axially beyond the projection f beyond the plane E (see FIG. 5). Basically however, it applies that the axial projections according to the invention are kept relatively small can, which saves energy and reduces wear. Especially in Radial direction, the axial projection 15 does not have to or only slightly above the Go beyond diameter, the moving set 1 to accommodate the teeth needed. 6 shows a set 1 with an axial projection 15, the outer root circle 21 by a small radial distance d over the outer root circle 22 of the outermost tooth 3 ". The same also applies to the clothing 1 itself Outer radius can be a relatively small one for energy, material and space savings Have a distance c to the outer root circle 22 of the outermost tooth 3 "(see FIG. 5).

Abstract

The garniture (1) moving relative to the casing (13) has axial projections (15) at the outer diameter. These extend from the side opposite the teeth (3). Preferred features: The moving garniture (1) forms part of a driven rotor (5); the complementary garniture is part of a stator (6). The rotor axis lies horizontally. Each projection (15) extends axially and/or radially for 4-20 mm. Adjacent axial projections (15) have angular spacing of at least 5 degrees . They (15) number eight or more over the entire periphery. They end at the rear plane of the garniture which forms its resting surface. The radially-outer surface of the axial (15) projection is inclined at up to plus or minus 10 degrees with respect to the circumferential surface. The outer root diameter of the axial projection has a radial spacing (d) of 5-15 mm at most from the outer root diameter of the outermost rotor tooth (3). The radially outermost part of the moving garniture is spaced at most 5 mm beyond the outermost root diameter of the outermost rotor tooth (3). Axial projection and garniture are made from the same material in a single piece. Radially inside the axial projections (15), there is a garniture centering collar (16). This engages a corresponding cylindrical projection on the rotor, for centering. The garniture comprises several segments, assembled to complete a circle. The teeth have either a round or oval cross section.

Description

Die Erfindung betrifft eine Vorrichtung zur Dispergierung gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device for dispersion according to the preamble of Claim 1.

Eine derartige Behandlungsvorrichtung ist zum Beispiel aus der DE-PS 30 47 013 bekannt. Diese zum Dispergieren von Altpapier geeignete Vorrichtung dient dazu, den Stoff intensiv mechanisch und thermisch zu bearbeiten, wodurch die darin enthaltenen Störstoffe von den Fasern abgelöst, zerkleinert und/oder unter die Sichtbarkeitsgrenze gebracht werden können. Anders als zum Beispiel bei Papierstoff-Mahlrefinern wird bei derartigen Maschinen der Faserstoff nicht in einer pumpfähigen Suspension bearbeitet, sondern in Form eines teigigen oder krümeligen Hochkonsistenzstoffes, vorzugsweise mit einem Trockengehalt zwischen 20 und 35 %. Auf diese Weise lassen sich beträchtlich höhere Scherkräfte in den Faserstoff übertragen, wodurch die genannten Ziele erreichbar sind, ohne dass dabei eine wesentliche Veränderung der Faserlänge erfolgt. In vielen Fällen wird die Wirkung der mechanischen Behandlung durch Hitze weiter verstärkt, z.B. durch Einstellen einer Faserstofftemperatur von 90° Celsius oder noch darüber.Such a treatment device is for example from DE-PS 30 47 013 known. This device, which is suitable for dispersing waste paper, serves the purpose of Machining material intensively mechanically and thermally, which means that the contained therein Contaminants detached from the fibers, crushed and / or below the visibility limit can be brought. Unlike, for example, with pulp refiners in such machines the pulp is not in a pumpable suspension processed, but in the form of a doughy or crumbly high consistency substance, preferably with a dry content between 20 and 35%. Let it this way significantly higher shear forces are transferred to the pulp, causing the mentioned goals are achievable without a significant change in the process Fiber length is done. In many cases, the effect of mechanical treatment further intensified by heat, e.g. by setting a fiber temperature of 90 ° Celsius or above.

Durch die hohe Konsistenz, die der Faserstoff bei der Behandlung hat, ist eine intensive mechanische Bearbeitung möglich, obwohl sich die Zähne der relativ zueinander bewegbaren Behandlungswerkzeuge, der sogenannten Garnituren, nicht berühren, sondern sich vielmehr in einem Abstand von ca. 0,5 mm oder mehr mit relativ hoher Geschwindigkeit aneinander vorbeibewegen. Dieser Abstand ist eventuell einstellbar gehalten. Günstig ist, dass bei Garnituren der beschriebenen Art eine sehr große Anzahl von Zähnen beteiligt ist, so dass der Papierstoff durch viele Schlitze (Zahnlücken) in kleine Teilströme aufgeteilt wird. Es sind ohne weiteres z.B. zwölf Stufen (Zahnreihen) hintereinander möglich. Garnituren dieser Art sind kompakt und haben eine ausgezeichnete Dispergierwirkung. In der Regel werden in einer solchen Vorrichtung eine stillstehende Stator- und eine bewegte Rotorgarnitur verwendet. Garnituren können aus Kreisringsegmenten zusammengesetzt sein.Due to the high consistency that the fibrous material has during the treatment, it is intense mechanical processing possible, although the teeth are relative to each other do not touch movable treatment tools, the so-called sets, but rather at a distance of about 0.5 mm or more with a relatively high Move speed past each other. This distance may be adjustable held. It is favorable that a very large number of sets of the type described of teeth is involved, so the pulp through many slots (tooth gaps) in small sub-streams is divided. Without further ado, e.g. twelve steps (rows of teeth) possible in a row. Sets of this type are compact and have one excellent dispersing effect. As a rule, such a device a stationary stator and a moving rotor assembly are used. Trimmings can be composed of circular ring segments.

Nachdem der hochkonsistente Faserstoff den Bearbeitungsbereich passiert hat, also die Dispergierung erfolgt ist, tritt er an der letzten Stufe der Statorgarnitur aus. Dabei wird er durch den nachfolgenden Stoff herausgedrückt und führt eine im wesentlichen radiale Bewegung aus. Da die Garnitur kreisförmig angelegte Zahnreihen enthält, erfolgt der Auswurf des Faserstoffes über den gesamten Umfang, also 360°. In der Regel ist die Mittelachse einer solchen Dispergiervorrichtung waagerecht angeordnet, d.h. der Faserstofftransport erfolgt in einer senkrechten Ebene. Dort, wo die Zahnlücken zwischen den Zähnen nach unten führen, fällt der Stoff frei heraus, z.B. in ein Gefäß, in dem er, wenn gewünscht, mit Wasser verdünnt werden kann. Im geodätisch betrachtet oberen Bereich der Garnituren sammelt sich der Stoff an, da er nicht direkt herabfallen kann. Zwar wird er früher oder später durch nachdrängenden Stoff abtransportiert, die Verhältnisse sind aber undefiniert und daher nicht immer befriedigend. Als Abhilfe kann im oberen Teil des Gehäuses bereits Wasser zugegeben werden, was einerseits zur Verdünnung führt und daher bei nachfolgender Hochkonsistenzbehandlung, z.B. Bleiche, unerwünscht ist und andererseits auch nicht immer den gewünschten Erfolg hat.After the highly consistent fiber material has passed the processing area, i.e. the Dispersion has occurred, it emerges at the last stage of the stator set. there it is pushed out by the following substance and essentially leads one radial movement. Because the set contains circular rows of teeth, this is done the ejection of the fiber over the entire circumference, i.e. 360 °. As a rule, that is The central axis of such a dispersing device is arranged horizontally, i.e. the The pulp is transported in a vertical plane. Where the tooth gaps between the teeth, the fabric falls out freely, e.g. in a vessel, in which, if desired, can be diluted with water. In geodesic terms The fabric collects at the top of the trimmings because it does not fall directly can. Sooner or later, it will be transported away by pressing material that However, relationships are undefined and therefore not always satisfactory. As a remedy can In the upper part of the housing water is already added, which on the one hand leads to Dilution and therefore with subsequent high consistency treatment, e.g. Bleach, is undesirable and on the other hand does not always have the desired success.

Aus der DE 198 02 260 A1 ist eine andere Möglichkeit zum Abtransport des Stoffes bei einer Vorrichtung zum Dispergieren bekannt, und zwar ist die Rotorgarnitur mit Radialvorsprüngen versehen. Diese bilden also eine radiale Fortsetzung der Dispergergarnitur, die zwar auch zu einem besseren Stoffabfluss aus diesem Bereich der Garnitur führt, aber relativ aufwendig ist und zusätzlich Platz radial außerhalb der Rotorgarnitur benötigt.Another possibility for the removal of the substance is shown in DE 198 02 260 A1 a device for dispersing known, namely the rotor assembly with Provide radial projections. So these form a radial continuation of the Disperger set, which also leads to a better flow of material from this area the set leads, but is relatively complex and additional space radially outside the Rotor set needed.

Bei einem Doppelscheibenrefiner gemäß der US-Patentschrift 3,765,613 werden beide Scheiben angetrieben. Zwischen den Arbeitsflächen wird das Material in schnelle rollende Bewegung versetzt und dadurch in Einzelfasern zerlegt. Diese Bearbeitung ist nicht zu vergleichen mit einer Hochkonsistenz-Dispergierung zwischen axial ineinandergreifende Zahnreihen.In a double disc refiner according to US Pat. No. 3,765,613, both of them are used Disks powered. Between the work surfaces, the material is in quick rolling motion offset and thereby broken down into individual fibers. This editing is not to be compared with a high-consistency dispersion between axial interlocking rows of teeth.

Der Erfindung liegt daher die Aufgabe zu Grunde, eine Behandlungsvorrichtung der angegebenen Art zu schaffen, mit der es möglich ist, den Austrag von bearbeitetem Faserstoff mit sehr einfachen Mitteln zu verbessern.The invention is therefore based on the object of a treatment device specified type, with which it is possible to discharge the processed To improve fiber with very simple means.

Diese Aufgabe wird durch die im Kennzeichen des Anspruchs 1 genannten Merkmale vollständig gelöst.This object is achieved by the features mentioned in the characterizing part of claim 1 completely solved.

Danach wird die radiale Bewegung, insbesondere im oberen Teil des Gehäuses, in eine axiale und dann in eine Umfangsbewegung umgelenkt. Der Stoff gelangt vollständig - ohne störende Anhäufungen und ohne wesentlichen Energieverbrauch - in den dafür vorgesehenen Behälter. Nachteilige Veränderungen des zumeist heißen Faserstoffes, wie z.B. Austrocknen, Verbacken, Verhornen werden vermieden.Then the radial movement, especially in the upper part of the housing, into a axial and then deflected into a circumferential movement. The fabric arrives completely - without annoying accumulations and without significant energy consumption - in the for that provided container. Adverse changes in the mostly hot pulp, such as e.g. Drying out, caking and hornification are avoided.

Der Erfindungsgegenstand hat darüberhinaus den Vorteil eines relativ günstigen Verschleißverhaltens. Dabei geht es um die Reduzierung des Verschleißes, der sich belkanntlich bei solchen Vorrichtungen nicht gänzlich vermeiden lässt. Dadurch, dass der Stoff verhältnismäßig zügig abtransportiert wird, können Anbackungen, die den Verschleiß begünstigen, verhindert werden. Besonders vorteilhaft ist es, wenn die Radialvorsprünge zu dem Teil der Garnitur gehören, der infolge des unvermeidbaren Verschleißes ohnehin in bestimmten Abständen ausgewechselt werden muss. Auf diese Weise wird nämlich der normale Verschleiß auf wenige Teile beschränkt, während die übrigen Maschinenteile, insbesondere die Befestigungsplatten für die Garnituren, nur noch einem sehr geringen Verschleiß unterliegen.The subject of the invention also has the advantage of being relatively inexpensive Wear behavior. It is about reducing the wear and tear As is well known, such devices cannot be avoided entirely. The fact that the Substance is removed relatively quickly, caking, which the Favor wear, be prevented. It is particularly advantageous if the Radial projections belong to the part of the set that is due to the inevitable Wear must be replaced at certain intervals anyway. To this Because normal wear is limited to a few parts, while the other machine parts, especially the mounting plates for the sets, only still subject to very little wear.

Die wichtigste Anwendung der Erfindung ist bei solchen Vorrichtungen zu erwarten, bei denen der hochkonsistente Faserstoff erst nach dem Austritt aus dem Gehäuse der Vorrichtung verdünnt wird, also als Dickstoff herausfällt. Es gibt aber auch andere Anwendungsfälle, nämlich die, bei denen der Dickstoff bereits im Gehäuse mit Wasser verdünnt wird. Auch wenn der Stoff verdünnt ist, sollte er möglichst schnell aus dem Gehäuse abgeführt werden, wozu die Erfindung entscheidend beiträgt.The most important application of the invention is to be expected in such devices which the high-consistency pulp only after exiting the housing of the Device is diluted, so falls out as thick matter. But there are also others Applications, namely those in which the thick matter is already in the housing with water is diluted. Even if the substance is diluted, it should leave the Housing are removed, to which the invention makes a decisive contribution.

Die Erfindung und ihre Vorteile werden erläutert an Hand von Zeichnungen. Dabei zeigen:

Fig. 1
einen Teil einer erfindungsgemäßen Vorrichtung in geschnittener Seitenansicht;
Fig. 2
eine Detailansicht zweier Garnituren;
Fig. 3
Aufsicht auf eine Garnitur von der Stoffseite her;
Fig. 4
Aufsicht auf eine Garnitur von der Rückseite her;
Fig. 5 + 6
jeweils eine weitere Detailansicht von verschiedenen Ausgestaltungen der Garnitur.
The invention and its advantages are explained with reference to drawings. Show:
Fig. 1
a part of a device according to the invention in a sectional side view;
Fig. 2
a detailed view of two sets;
Fig. 3
Supervision of a set from the fabric side;
Fig. 4
Supervision of a set from the back;
5 + 6
each a further detailed view of different configurations of the set.

Fig. 1 zeigt einen Teil einer Dispergiervorrichtung mit zwei relativ zueinander in Umfangsrichtung bewegbaren komplementären Garnituren 1, 2, die miteinander so in Eingriff stehen, dass sie zusammenwirken können. Die gewählte Darstellung in Form eines Schnittes in Seitenansicht lässt erkennen, dass sich radial von innen nach außen die zu den verschiedenen Garnituren gehörenden Zähne 3, 4, 3', 4' usw. bis zu den äußeren Zähnen 3", 4" abwechseln. Die Zahnreihe einer Garnitur reicht jeweils in den Zwischenraum der komplementären Garnitur, wobei zum bestimmungsgemäßen Betrieb der Vorrichtung zwischen den Zähnen von komplementären Garnituren Abstände eingehalten werden müssen. Die links gezeichnete Garnitur 2 gehört zum Stator 6 und die rechts gezeichnete Garnitur 1 zum Rotor 5. Dieser wird von einer Welle 10 gehalten und in Rotation versetzt. Der hochkonsistente Papierfaserstoff gelangt durch das Zulaufrohr 9 mit Hilfe einer Förderschnecke 12 zentral in den Disperger. Ein solcher Stoff ist relativ zäh, anders als z.B. eine pumpfähige Papierfasersuspension, wie sie in Entstippern oder Refinern verarbeitet wird. Er wird zunächst vom Sclhleuderkreuz 11 erfasst und dann in die Garnituren gefördert. Die radial innerste Zahnreihe gehört zur Rotorgarnitur und die radial äußerste zur Statorgarnitur. Die Rotationsachse des Rotors 5 liegt hier waagerecht, und die Radialtransportrichtung des hochkonsistenten Papierfaserstoffes liegt in senkrechten Ebenen. Die Garnituren sind in einem Gehäuse 13 untergebracht.Fig. 1 shows part of a dispersing device with two relative to each other in Circumferential direction movable complementary sets 1, 2, so together in Intervention that they can work together. The selected representation in form A section in side view shows that radially from the inside out the teeth 3, 4, 3 ', 4' etc. belonging to the different sets up to Alternate external teeth 3 ", 4". The teeth row of a set extends into the Intermediate space of the complementary set, whereby for the intended operation the device between the teeth of complementary sets of distances must be observed. The set 2 shown on the left belongs to the stator 6 and the set 1 shown on the right for the rotor 5. This is driven by a shaft 10 held and set in rotation. The highly consistent paper pulp gets through the inlet pipe 9 with the aid of a screw conveyor 12 centrally in the disperser. On such material is relatively tough, unlike e.g. a pumpable paper fiber suspension, how it is processed in deflakers or refiners. It is initially from Sclhleuderkreuz 11 captured and then conveyed into the sets. The radially innermost Row of teeth belongs to the rotor assembly and the radially outermost one to the stator assembly. The The axis of rotation of the rotor 5 lies horizontally here, and the radial transport direction of the highly consistent paper pulp lies in vertical planes. The trimmings are in a housing 13 housed.

Zur exakten Zentrierung der zum Rotor gehörenden Garnitur 1 ist ein Zentrierbund 16 vorgesehen, der aber nicht am Außendurchmesser dieser Garnitur, sondern um das Maß h (s. Fig. 3) weiter innen liegt. Der Durchmesser des Rotors 5 kann also kleiner gehalten werden als der der Garnitur 1. Das spart Material, und die Flächen des Zentrierbundes sind außerhalb der Schleuderbahn des Stoffes. An der Garnitur 1 bildet sich außerhalb des Zentrierbundes 16 ein radialer Überstand . Dieser trägt eine Anzahl der erfindungsgemäßen Axialvorsprünge 15, die den aus dem Garniturensatz austretenden Faserstoff beschleunigen und abführen. Solche Axialvorsprünge 15 können aus demselben Material sein wie die Garnitur, z.B. ohne großen Mehraufwand mit angegossen werden. Auch wegen des möglichen Verschleißes ist es von Vorteil, wenn die Axialvorsprünge 15 beim Garniturwechsel mitgetauscht werden.A centering collar 16 is used for exact centering of the clothing 1 belonging to the rotor provided, but not by the outside diameter of this set, but by the measure h (see Fig. 3) lies further inside. The diameter of the rotor 5 can therefore be smaller can be kept as that of the set 1. This saves material, and the surfaces of the Centering cuffs are outside the sling path of the fabric. Forms on the set 1 there is a radial projection beyond the centering collar 16. This carries a number the axial projections 15 according to the invention, which from the set of fittings Accelerate and dissipate emerging fibers. Such axial projections 15 can made of the same material as the set, e.g. with little extra effort be cast on. Also because of the possible wear, it is advantageous if the Axial projections 15 are exchanged when changing the clothing.

In Fig. 2 sind zwei komplementäre, also zu einem Satz gehörenden Garnituren in axial auseinandergezogener Lage und etwas detaillierter gezeichnet, ohne allerdings alle konstruktiven Merkmale zu offenbaren. In der Regel haben Garnituren dieser Art zwischen drei und zwölf Zahnreihen, hier sind nur die radial äußersten zwei gezeichnet. Die zum Rotor gehörende Garnitur 1 weist erfindungsgemäß Axialvorsprünge 15 auf mit einem äußeren Fußkreis 21. Sie haben eine axiale Erstreckung a von vorzugsweise mindestens 4 mm und eine radiale Erstreckung b zum Fußkreis 21 von vorzugsweise mindestens 4 mm. Das Höchstmaß sollte jeweils nicht über 20 mm liegen, was natürlich auch von der Größe der Garnituren abhängt. Die Axialvorsprünge reichen hier axial bis zur Ebene E der Auflagefläche 20 der Garnitur. Das ist bei der Herstellung der Garnituren von besonderem Vorteil. Aber auch davon abweichende Axialvorsprünge sind ohne weiteres verwendbar, um die gestellte Aufgabe zu lösen. Ihre äußeren Stirnflächen sind gegenüber der zylindrischen Umfangsfläche hier in einem spitzen Winkel β geneigt.In Fig. 2 are two complementary sets, ie belonging to a set in axial exploded location and a little more detailed, but without all to reveal constructive features. As a rule, sets of this type between three and twelve rows of teeth, here only the radially outermost two are drawn. According to the invention, the clothing 1 belonging to the rotor has axial projections 15 an outer root circle 21. They have an axial extension a of preferably at least 4 mm and a radial extension b to the base circle 21 of preferably at least 4 mm. The maximum size should not be more than 20 mm each of course also depends on the size of the sets. The axial projections are sufficient here axially to the plane E of the bearing surface 20 of the set. That is in the making of the Sets of particular advantage. But there are also different axial projections can easily be used to solve the task. Your outer end faces are inclined at an acute angle β with respect to the cylindrical peripheral surface.

Fig. 3 zeigt in Aufsicht einen Dispergergamiturensatz, also eine Rotor- und eine Statorgarnitur. Man erkennt die ringförmigen Zwischenräume 14. Auch die Zähne 3, 3', 3", 4, 4', 4" sind in ringförmigen Reihen angeordnet und reichen in die entsprechenden Zwischenräume 14 der Gegengarnitur hinein. Von der Vielzahl der Zähne sind nur einige dargestellt. Sie sind geschnitten gezeichnet, so dass ihr vorzugsweise nicht runder Querschnitt 17 erkennbar ist. Zwischen benachbarten Zähnen bleiben Zahnlücken 7 für den Durchfluss des Faserstoffes frei. Die Form der Zähne ist nicht exakt gezeichnet, sie ist bekannt und richtet sich nach dem Verwendungszweck der Garnitur.Fig. 3 shows in supervision a Disperger gear set, ie a rotor and one Stator assembly. The annular spaces 14 can be seen. The teeth 3, 3 ', 3 ", 4, 4 ', 4" are arranged in annular rows and extend into the corresponding ones Spaces 14 of the counter set into it. Only a few of the large number of teeth shown. They are drawn cut so that they are preferably not rounder Cross section 17 can be seen. Tooth gaps 7 remain between adjacent teeth the flow of the pulp free. The shape of the teeth is not exactly drawn, they is known and depends on the intended use of the set.

Wenn man die in Fig. 3 gezeigte Rotorgarnitur um 180° wendet, gelangt man zur Fig. 4. Sie bietet also die Ansicht auf die Rückseite der Dispergergarnitur, das ist die Seite, die nach Einbau in den Disperger mit dem Rotor 5 (Fig. 1) in Kontakt steht. Die Fig. 4 zeigt auch etwas genauer, dass es sich hier um eine aus insgesamt acht Segmenten bestehende Garnitur handelt, welche jeweils über einen Umfangswinkel von 45° gehen. Außerdem sind Befestigungslöcher 8 angedeutet, durch die z.B. eine Verschraubung mit dem Rotor 5 (Fig. 1) möglich ist. Wichtig für die Erfindung sind die Axialvorsprünge 15, von denen bei dem hier gezeigten Beispiel vier pro Segment, d.h. also 32 insgesamt für die ganze Garnitur vorgesehen sind. Die genaue Anzahl der benötigten Axialvorsprünge richtet sich nach den Erfordernissen. Benachbarte Axialvorsprünge 15 liegen in einem Abstandswinkel α auseinander. Weiterhin erkennt man auf dieser Darstellung den Zentrierbund 16, der hier zusammenhängend über den gesamten Umfang aller Garnitursegmente ausgestaltet ist. Eventuell kann er auch unterbrochen sein, d.h. aus einer Anzahl von verschiedenen Teilabschnitten bestehen. Ein solcher Zentrierbund ist besonders dann wichtig, wenn die Garnitur aus Kreisringsegmenten zu einem Vollkreis zusammengebaut wird. Die Kombination der Axialvorsprünge mit dem radial innenliegenden Zentrierbund ergibt eine platzsparende Anordnung mit guter Förderwirkung für den aus der Garnitur austretenden zähen Faserstoff.If you turn the rotor assembly shown in FIG. 3 by 180 °, you get to FIG. 4. So it offers the view of the back of the disperser set, that is the side that after installation in the disperser with the rotor 5 (Fig. 1) is in contact. 4 shows also a little more precise that this is a total of eight segments Set acts, which each go over a circumferential angle of 45 °. Moreover mounting holes 8 are indicated, through which e.g. a screw connection to the rotor 5 (Fig. 1) is possible. Important for the invention are the axial projections 15, which in the example shown here four per segment, i.e. so 32 in total for the whole set are provided. The exact number of axial protrusions required depends on the requirements. Adjacent axial projections 15 are in one Distance angle α apart. Furthermore, one can recognize the on this representation Centering 16, which is contiguous here over the entire scope of all Set segments is designed. It may also be interrupted, i.e. out a number of different subsections exist. Such a centering collar is This is particularly important when the set of circular ring segments forms a full circle is assembled. The combination of the axial projections with the radial inner centering collar results in a space-saving arrangement with good Conveying effect for the tough fibrous material emerging from the clothing.

Wie schon erwähnt, kann der Axialvorsprung 15 auch so gestaltet sein, dass er sich axial um den Überstand f über die Ebene E hinaus erstreckt (s. Fig. 5). Grundsätzlich gilt aber, dass die erfindungsgemäßen Axialvorsprünge relativ klein gehalten werden können, wodurch Energie gespart und Verschleiß reduziert wird. Insbesondere in radialer Richtung muss der Axialvorsprung 15 nicht oder nur gering über den Durchmesser hinausgehen, den die bewegte Garnitur 1 zur Unterbringungen der Zähne benötigt. So zeigt die Fig. 6 eine Garnitur 1 mit einem Axialvorsprung 15, dessen äußerer Fußkreis 21 um einen kleinen Radialabstand d über den äußeren Fußkreis 22 des äußersten Zahnes 3" hinausgeht. Ähnliches gilt auch für die Garnitur 1 selbst. Ihr Außenradius kann zur Energie, Material- und Platzerspamis einen relativ kleinen Abstand c zum äußeren Fußkreis 22 des äußersten Zahnes 3" haben (s. Fig. 5).As already mentioned, the axial projection 15 can also be designed so that it is extends axially beyond the projection f beyond the plane E (see FIG. 5). Basically however, it applies that the axial projections according to the invention are kept relatively small can, which saves energy and reduces wear. Especially in Radial direction, the axial projection 15 does not have to or only slightly above the Go beyond diameter, the moving set 1 to accommodate the teeth needed. 6 shows a set 1 with an axial projection 15, the outer root circle 21 by a small radial distance d over the outer root circle 22 of the outermost tooth 3 ". The same also applies to the clothing 1 itself Outer radius can be a relatively small one for energy, material and space savings Have a distance c to the outer root circle 22 of the outermost tooth 3 "(see FIG. 5).

Claims (17)

Vorrichtung zur Dispergierung von hochkonsistentem Faserstoff, die mindestens zwei Garnituren (1, 2,) hat, 1.1 die jeweils eine im wesentlichen rotationssymmetrische Form haben und koaxial zueinander angeordnet sind, 1.2 die in ringförmigen, zu ihrer Mitte konzentrischen Reihen angeordnete Zähne (3, 3', 3", 4, 4', 4") aufweisen, zwischen welchen sich Zahnlücken (7) befinden, die freie Querschnitte bilden, welche von dem zu behandelnden Faserstoff durchströmbar sind, 1.3 die zwischen den Zahnreihen ringförmige Zwischenräume (14) aufweisen, 1.4 die so zueinander positioniert sind, dass mindestens eine Zahnreihe einer Garnitur (1,2) in einen ringförmigen Zwischenraum (14) der anderen, komplementären Garnitur (2,1) hineinreicht, 1.5 wobei wenigstens eine Garnitur (1) relativ zur anderen in Umfangsrichtung bewegbar ist, dadurch gekennzeichnet, dass die relativ zum Gehäuse (13) der Vorrichtung bewegbare Garnitur (1) im Bereich des Außendurchmessers mit mindestens einem Axialvorsprung (15) versehen ist, der sich auf der den Zähnen (3, 3', 3") gegenüberliegenden Seite axial erstreckt.Device for dispersing high-consistency fibrous material, which has at least two sets (1, 2,), 1.1 each have an essentially rotationally symmetrical shape and are arranged coaxially to one another, 1.2 the teeth (3, 3 ', 3 ", 4, 4', 4") arranged in annular rows concentric with their center, between which there are tooth gaps (7) which form free cross-sections which are different from the one to be treated Through which fibrous material can flow, 1.3 which have annular spaces (14) between the rows of teeth, 1.4 which are positioned relative to one another in such a way that at least one row of teeth of one set (1, 2) extends into an annular space (14) of the other, complementary set (2, 1), 1.5 at least one set (1) being movable in the circumferential direction relative to the other, characterized in that the set (1), which is movable relative to the housing (13) of the device, is provided in the region of the outer diameter with at least one axial projection (15) which is axially on the side opposite the teeth (3, 3 ', 3 ") extends. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass die bewegbare Garnitur (1) zu einem antreibbaren Rotor (5) gehört und die komplementäre Garnitur (2) zu einem feststehenden Stator (6).Device according to claim 1,
characterized in that the movable assembly (1) belongs to a drivable rotor (5) and the complementary assembly (2) to a fixed stator (6). Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet, dass die Rotationsachse des Rotors (15) waagerecht liegt. Device according to claim 2,
characterized in that the axis of rotation of the rotor (15) lies horizontally. Vorrichtung nach Anspruch 1, 2 oder 3,
dadurch gekennzeichnet, dass der Axialvorsprung (15) eine axiale Erstreckung (a) von mindestens 4 mm und höchstens 20 mm aufweist.Device according to claim 1, 2 or 3,
characterized in that the axial projection (15) has an axial extent (a) of at least 4 mm and at most 20 mm. Vorrichtung nach Anspruch 1, 2, 3 oder 4,
dadurch gekennzeichnet, dass der Axialvorsprung (15) eine radiale Erstreckung (b) von mindestens 4 mm und höchstens 20 mm aufweist.Device according to claim 1, 2, 3 or 4,
characterized in that the axial projection (15) has a radial extent (b) of at least 4 mm and at most 20 mm. Vorrichtung nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass benachbarte Axialvorsprünge (15) in Umfangsrichtung einen Abstandswinkel (α) von mindestens 5° haben.Device according to one of the preceding claims,
characterized in that adjacent axial projections (15) have a circumferential angle (α) of at least 5 °. Vorrichtung nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass die Anzahl der Axilvorsprünge (15) auf dem ganzen Umfang mindestens acht ist.Device according to one of the preceding claims,
characterized in that the number of axial projections (15) over the entire circumference is at least eight. Vorrichtung nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass die Axialvorsprünge (15) mit der Ebene (E) abschließen, die die Auflagefläche (20) der Garnitur (1) bildet.Device according to one of the preceding claims,
characterized in that the axial projections (15) end with the plane (E) which forms the bearing surface (20) of the clothing (1). Vorrichtung nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass die radiale Außenfläche des Axialvorsprungs (15) gegenüber der Umfangsfläche bis zu ± 10° (Winkel β) geneigt ist. Device according to one of the preceding claims,
characterized in that the radial outer surface of the axial projection (15) is inclined up to ± 10 ° (angle β) with respect to the peripheral surface. Vorrichtung nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass der äußere Fußkreis (21) des Axialvorsprungs (15) vom äußeren Fußkreis (22) des äußersten Rotorzahnes (3") einen Radialabstand (d) von maximal 15 mm hat.Device according to one of the preceding claims,
characterized in that the outer root circle (21) of the axial projection (15) from the outer root circle (22) of the outermost rotor tooth (3 ") has a radial distance (d) of at most 15 mm. Vorrichtung nach Anspruch 10,
dadurch gekennzeichnet, dass der äußere Fußkreis (21) des Axialvorsprungs (15) vom äußeren Fußkreis (22) des äußersten Rotorzahnes (3") einen Radialabstand (d) von maximal 5 mm hat.Apparatus according to claim 10,
characterized in that the outer root circle (21) of the axial projection (15) from the outer root circle (22) of the outermost rotor tooth (3 ") has a radial distance (d) of at most 5 mm. Vorrichtung nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass der Abstand (c) des radial äußersten Teils der bewegbaren Garnitur (1) vom äußeren Fußkreis (22) des äußersten Rotor-Zahnes (3") maximal 5 mm beträgt.Device according to one of the preceding claims,
characterized in that the distance (c) of the radially outermost part of the movable assembly (1) from the outer root circle (22) of the outermost rotor tooth (3 ") is a maximum of 5 mm. Vorrichtung nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass Axialvorsprung (15) und Garnitur (1) aus demselben Material in einem Stück hergestellt sind.Device according to one of the preceding claims,
characterized in that the axial projection (15) and the set (1) are made in one piece from the same material. Vorrichtung nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass sich radial innerhalb des Axialvorsprunges (15) ein Zentrierbund (16) befindet, der dazu dient, mit einem entsprechenden Vorsatz am Rotor (5) eine Berührungsfläche zur Zentrierung der Garnitur (1) am Rotor (5) zu bilden.Device according to one of the preceding claims,
characterized in that a centering collar (16) is located radially inside the axial projection (15), which serves to form a contact surface for centering the clothing (1) on the rotor (5) with a corresponding attachment on the rotor (5). Vorrichtung nach Anspruch 14,
dadurch gekennzeichnet, dass der Zentrierbund (16) eine außenzylindrische und der Vorsatz am Rotor (5) eine innenzylindrische Berührungsfläche bilden.Device according to claim 14,
characterized in that the centering collar (16) forms an outer cylindrical and the attachment on the rotor (5) an inner cylindrical contact surface. Vorrichtung nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass die Garnitur (1, 2) aus mehreren Segmenten besteht, die zu einem Vollkreis zusammengesetzt werden können.Device according to one of the preceding claims,
characterized in that the set (1, 2) consists of several segments that can be put together to form a full circle. Vorrichtung nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass die Zähne (3, 3', 3", 4, 4', 4") weder einen runden noch einen ovalen Querschnitt (17) haben.Device according to one of the preceding claims,
characterized in that the teeth (3, 3 ', 3 ", 4, 4', 4") have neither a round nor an oval cross-section (17).
EP01103920A 2000-04-11 2001-02-17 Apparatus to disperse a high consistency paper fibers slurry Expired - Lifetime EP1147804B1 (en)

Applications Claiming Priority (2)

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DE10017898A DE10017898A1 (en) 2000-04-11 2000-04-11 Device for dispersing high-consistency paper pulp and fittings for this device
DE10017898 2000-04-11

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DE10337463B4 (en) * 2003-08-14 2005-08-04 Voith Paper Patent Gmbh Process for the production of wear-resistant tools for the mechanical treatment of pulp fibers and their use

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GB763823A (en) * 1955-01-31 1956-12-19 Jackson And Church Company Method for treating a fibrous material
DE1056457B (en) * 1956-03-08 1959-04-30 Condux Werk Toothed disk mill
US3765613A (en) * 1965-10-14 1973-10-16 Bauer Bros Co Pulp refining system and apparatus
FR2352917A1 (en) * 1976-05-27 1977-12-23 Black Clawson Co SET OF REVERSIBLE REFINING PLATES FOR DISC REFINER AND PROCESS FOR IMPLEMENTING THE REFINER
US4820381A (en) * 1987-02-25 1989-04-11 Internationa Paper Company Pulp refiner with fluidizing inlet
EP0877117A2 (en) * 1997-05-05 1998-11-11 J&L Fiber Services, Inc. Refiner plate assembly and method of mounting
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ATE274994T1 (en) 2004-09-15
DE50103441D1 (en) 2004-10-07
EP1147804B1 (en) 2004-09-01
ES2225323T3 (en) 2005-03-16

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