EP0931584B1 - Apparatus for dispersing of highly consistent waste paper - Google Patents

Apparatus for dispersing of highly consistent waste paper Download PDF

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Publication number
EP0931584B1
EP0931584B1 EP98122347A EP98122347A EP0931584B1 EP 0931584 B1 EP0931584 B1 EP 0931584B1 EP 98122347 A EP98122347 A EP 98122347A EP 98122347 A EP98122347 A EP 98122347A EP 0931584 B1 EP0931584 B1 EP 0931584B1
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EP
European Patent Office
Prior art keywords
radial projection
radial
treatment tool
angle
treatment
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Expired - Lifetime
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EP98122347A
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German (de)
French (fr)
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EP0931584A1 (en
Inventor
Hans Schnell
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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
    • D21D1/008—Discs
    • 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
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/60—Pump mixers, i.e. mixing within a pump
    • B01F25/64—Pump mixers, i.e. mixing within a pump of the centrifugal-pump type, i.e. turbo-mixers
    • 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
    • D21D1/303—Double disc mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F2025/91—Direction of flow or arrangement of feed and discharge openings
    • B01F2025/912—Radial flow
    • B01F2025/9121—Radial flow from the center to the circumference, i.e. centrifugal flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/47—Mixing of ingredients for making paper pulp, e.g. wood fibres or wood pulp
    • 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
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • 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 dispersing highly consistent Waste paper 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%. Leave this way significantly higher shear forces are transferred to the pulp, causing the mentioned goals are achievable without a significant change in the 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. Since 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.
  • EP 0 773 316 A1 also deals with the special configuration of one Disperger for highly consistent fiber. Through those described in it Improvements will make it possible to deliver the disperger at a higher throughput apply and thereby improve the economy. To do this, the teeth lengthened in the axial direction and with webs for better strength connected. On the discharge of the dispersed substance, i.e. after passing through the dispersing rows of teeth, this measure has little influence.
  • DE 195 23 704 A1 proposes the discharge device of a To design Dispergers so that a back pressure can be generated that Degree of filling of the device and / or the degree of compression of the to be treated Material changed. This measure can also remove the pulp after leaving not improve the clothing area.
  • No. 5,042,726 describes an apparatus with which grinding of Cellulose fibers or e.g. of wood chips. in one
  • the raw material to be ground is machine by two arranged in a row Grinding zones promoted, the second grinding zone compared to the first one Inclined angle.
  • This machine is for the purpose of dispersing Waste paper pulp is hardly suitable as there is a significant change in the paper fibers is what is undesirable when dispersing. Measures for improvement of the discharge are also not to be found here.
  • the object of the invention is therefore to provide a treatment device create with which it is possible to discharge processed pulp with simple Means to improve.
  • the subject of the invention also has the advantage of being relatively cheap Wear behavior. It is about reducing the wear and tear is known not to be entirely avoided in such devices. Because the If the material is removed relatively quickly, caking can occur Favor wear, be prevented. It is particularly advantageous if the Radial projections belong to the part of the treatment tool that is due to the unavoidable wear and tear should be replaced at certain intervals anyway got to. In this way, the normal wear and tear on a few parts limited while the other machine parts, especially the mounting plates for the trimmings, subject to very little wear.
  • the radial projection can extend over the entire circumference be an annular collar. Like the set, it can do one thing wear-resistant material and, if necessary, together with the set be replaced.
  • FIG. 1 shows two complementary treatment tools that can be moved relative to one another 1 and 2, which are in engagement with each other so that they can cooperate.
  • the selected representation in the form of a section in side view shows that radially from the inside to the outside belonging to different treatment tools Alternate teeth 4, 3, 4 ', 3', 4 ", 3".
  • the arrangement is such that the row of teeth a treatment tool each in the intermediate space 11 (Fig. 3) of the complementary tool is sufficient and a distance a to the teeth of the takes complementary treatment tool.
  • the one on the left belongs here Treatment tool 1 to the stator 6 and treatment tool 2 to the right on the rotor 5.
  • the axis of rotation, not shown, is horizontal here, and the The radial transport direction of the fibrous material lies in vertical planes.
  • the last Row of teeth with teeth 3 "belongs to the stator set.
  • the treatment tools are housed in a housing 6 ', the stator armature with the housing being rotationally fixed connected is.
  • Such sets are basically already known and are used, for example De-sticking or dispersing used.
  • the decisive innovation can be found in the Area of the discharge device 8. This shows in the example shown here fixed deflection element 9 with a contour 10, the shape of which is radial emerging fiber material is deflected in the axial direction. It works together with one Number of radial projections 7 (only one drawn), which are about the projection b extend beyond the outermost edge of the rotor 5.
  • Fig. 2 shows a view radially from the outside of a radial projection 7, each in Has the surface A or A 'circumferential direction. You can see some of the outermost teeth 4 ", starting from the treatment tool 2 axially in the direction of not drawn complementary tool.
  • Radial projections 7 are available, which are each at a distance of 120 ° from one another.
  • the appropriate number of radial projections depends of course on the Conditions, e.g. Gear diameter and speed from. They run above one Circumferential extent c, which is about 10 ° here, the run-up angle ⁇ between the Radius and the areas A, A 'is approximately 20 °.
  • FIG. 4 shows the top view of a stator gear with teeth 3, 3 ', 3 ", between which are the spaces 11 and also the contour 10 of the Deflection element 9.
  • the embodiment shown here is part of a Device according to the invention, the axis of rotation of which is horizontal. The view this figure is to be understood so that the direction according to arrow 12 is above. Because of the conditions already described, especially in the upper range of Treatment device, the deflection element 9 is attached there. It stretches here over a circumferential angle of approx. 270 °. There are variations of this circumferential angle can be determined by experiments. In other cases where the axis of rotation is vertical, the deflecting element is essentially on the entire circumference provided.
  • contour 10 in contact with the material Deflection element 9.
  • the contour 10 is part of a torus' T educated.
  • other forms are also conceivable with which the deflection takes place can.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Paper (AREA)

Abstract

The apparatus to disperse a high consistency fiber material, mechanically, has a deflection (9) in the outflow (8). It has a contour (10) which is shaped to deflect fibers with a radial orientation into an axial alignment. The mechanical tool unit (2), which moves in relation to the housing (6), has at least one radial projection (7) at its outer circumference which extends beyond the radially outermost edge. The apparatus has at least two tool units (1,2) which act on the fiber material, and move in relation to each other. One tool unit (1) is part of a fixed stator (6) and the complementary tool unit (2) is part of a powered rotor (5), with a horizontal rotary axis. At least one radial projection (7) is part of the moving tool unit (2), with a radial extension (b) of 3-50 mm or 3-20 mm over the circumference of the rotor (5). In the peripheral direction, the projection (7) has a surface on one side at an angle to the radius of 10-45 degrees , and the peripheral extension of the projection (7) has an angle of 3-15 degrees or 360 degrees . The moving tool unit (2) has a single radial projection (7), which does not extend axially into the working zone of the complementary tool unit. The contour (10) of the deflection (9) has a peripheral angle of 180-300 degrees , and extends over the tool zone, or it is the inner surface of a toroidal section, where its center coincides with working tools. The tool structure is composed of a number of assembled ring arc segments.

Description

Die Erfindung betrifft eine Vorrichtung zum Dispergieren von hochkonsistentem Altpapier gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device for dispersing highly consistent Waste paper 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%. Leave this way significantly higher shear forces are transferred to the pulp, causing the mentioned goals are achievable without a significant change in the 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 nicht berühren, sondern sich vielmehr in einem Abstand von ca. 0,5 mm oder mehr aneinander vorbeibewegen. Oft kann der Abstand zwischen den Behandlungswerkzeugen zur Regelung der Behandlungsintensität verändert werden. Solche Behandlungswerkzeuge werden zumeist als Garnituren bezeichnet, und zwar die stillstehende als Stator- und die bewegte als Rotorgamitur. Garnituren können aus Kreisringsegmenten zusammengesetzt sein. Due to the high consistency that the fibrous material has during the treatment, it is intense mechanical machining possible, although the teeth are relative to each other Do not touch movable treatment tools, but rather in one Move approx. 0.5 mm or more apart. Often the distance can changed between the treatment tools for regulating the treatment intensity become. Such treatment tools are mostly referred to as trimmings, and the stationary as a stator and the moving as a rotor gear. 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. Since 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 carried away by the pressing material 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 leads and therefore with subsequent high consistency treatment, e.g. bleach, is undesirable and on the other hand does not always have the desired success.

Auch die EP 0 773 316 A1 befasst sich mit der speziellen Ausgestaltung von einem Disperger für hochkonsistenten Faserstoff. Durch die darin beschriebenen Verbesserungen wird es möglich, den Disperger mit einem höheren Durchsatz zu beaufschlagen und dadurch die Wirtschaftlichkeit zu verbessern. Dazu werden die Zähne in Axialrichtung verlängert und zur besseren Festigkeit mit Stegen miteinander verbunden. Auf den Austrag des dispergierten Stoffes, also nach Passieren der dispergierenden Zahnreihen, hat diese Maßnahme nur einen geringen Einfluß.EP 0 773 316 A1 also deals with the special configuration of one Disperger for highly consistent fiber. Through those described in it Improvements will make it possible to deliver the disperger at a higher throughput apply and thereby improve the economy. To do this, the teeth lengthened in the axial direction and with webs for better strength connected. On the discharge of the dispersed substance, i.e. after passing through the dispersing rows of teeth, this measure has little influence.

In der DE 195 23 704 A1 wird vorgeschlagen, die Austragsvorrichtung eines Dispergers so zu gestalten, dass ein Gegendruck erzeugt werden kann, der den Füllungsgrad der Vorrichtung und/oder den Kompressionsgrad des zu behandelnden Stoffes verändert. Auch diese Maßnahme kann den Austrag des Faserstoffs nach Verlassen des Garniturbereiches nicht verbessern.DE 195 23 704 A1 proposes the discharge device of a To design Dispergers so that a back pressure can be generated that Degree of filling of the device and / or the degree of compression of the to be treated Material changed. This measure can also remove the pulp after leaving not improve the clothing area.

Die US 5,042,726 beschreibt eine Apparatur, mit der eine Mahlung von Zellulosefasern oder z.B. von hölzernen Hackschnitzeln erfolgen kann. in einer solchen Maschine wird der zu mahlende Rohstoff durch zwei hintereinander angeordnete Mahlzonen gefördert, wobei die zweite Mahlzone gegenüber der ersten einen Schrägwinkel aufweist. Diese Maschine ist für das zweckmäßige Dispergieren von Altpapierfaserstoff kaum geeignet, da eine wesentliche Veränderung der Papierfasem zu erwarten ist, was beim Dispergieren unerwünscht ist. Maßnahmen zur Verbesserung des Austrages sind auch hier nicht zu finden.No. 5,042,726 describes an apparatus with which grinding of Cellulose fibers or e.g. of wood chips. in one The raw material to be ground is machine by two arranged in a row Grinding zones promoted, the second grinding zone compared to the first one Inclined angle. This machine is for the purpose of dispersing Waste paper pulp is hardly suitable as there is a significant change in the paper fibers is what is undesirable when dispersing. Measures for improvement of the discharge are also not to be found here.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Behandlungsvorrichtung zu schaffen, mit der es möglich ist, den Austrag von bearbeitetem Faserstoff mit einfachen Mitteln zu verbessern.The object of the invention is therefore to provide a treatment device create with which it is possible to discharge processed pulp with simple Means to improve.

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, Verhomen 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 dehumidification are avoided.

Der Erfindungsgegenstand hat darüberhinaus den Vorteil eines relativ günstigen Verschleißverhaltens. Dabei geht es um die Reduzierung des Verschleißes, der sich bekanntlich 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 des Behandlungswerkzeuges 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 cheap Wear behavior. It is about reducing the wear and tear is known not to be entirely avoided in such devices. Because the If the material is removed relatively quickly, caking can occur Favor wear, be prevented. It is particularly advantageous if the Radial projections belong to the part of the treatment tool that is due to the unavoidable wear and tear should be replaced at certain intervals anyway got to. In this way, the normal wear and tear on a few parts limited while the other machine parts, especially the mounting plates for the trimmings, 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 as thick matter falls out. 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.

Im Extremfall kann der Radialvorsprung ein Ober den gesamten Umfang verlaufender ringförmiger Bund sein. Er kann - ebenso wie die Garnitur - aus einem besonders verschleißfesten Material bestehen und im Bedarfsfall zusammen mit der Garnitur ausgetauscht werden.In extreme cases, the radial projection can extend over the entire circumference be an annular collar. Like the set, it can do one thing wear-resistant material and, if necessary, together with the set be replaced.

Vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der abhängigen Ansprüche.Advantageous developments of the invention are the subject of the dependent claims.

Ausführungsbeispiele der Erfindung und ihre Vorteile werden erläutert anhand von Zeichnungen. Dabei zeigen:

Fig. 1
Schnitt durch den wesentlichen Teil einer erfindungsgemäßen Vorrichtung in Seitenansicht;
Fig. 2
Detailansicht eines Radialvorsprunges;
Fig. 3
Aufsicht auf die Vorrichtung (Rotor);
Fig. 4
Aufsicht auf die Vorrichtung (Stator);
Fig. 5
Variante, Teilansicht;
Fig. 6
Kontur eines speziellen Umlenkelementes.
Embodiments of the invention and their advantages are explained with reference to drawings. Show:
Fig. 1
Section through the essential part of a device according to the invention in side view;
Fig. 2
Detail view of a radial projection;
Fig. 3
Supervision of the device (rotor);
Fig. 4
Supervision of the device (stator);
Fig. 5
Variant, partial view;
Fig. 6
Contour of a special deflection element.

Fig. 1 zeigt zwei relativ zueinander bewegbare, komplementäre Behandlungswerkzeuge 1 und 2, die miteinander so im Eingriff stehen, daß sie zusammenwirken können. Die gewählte Darstellung in Form eines Schnitts in Seitenansicht läßt erkennen, daß sich radial von innen nach außen die zu verschiedenen Behandlungswerkzeugen gehörenden Zähne 4, 3, 4', 3', 4", 3" abwechseln. Die Anordnung ist derart, daß die Zahnreihe eines Behandlungswerkzeuges jeweils in den Zwischenraum 11 (Fig. 3) des komplementären Werkzeuges reicht und einen Abstand a zu den Zähnen des komplementären Behandlungswerkzeuges einnimmt. Dabei gehört das links gezeichnete Behandlungswerkzeug 1 zum Stator 6 und rechts das Behandlungswerkzeug 2 zum Rotor 5. Die nicht dargestellte Rotationsachse liegt hier waagerecht, und die Radialtransportrichtung des Faserstoffes liegt in senkrechten Ebenen. Die letzte Zahnreihe mit den Zähnen 3" gehört zur Statorgarnitur. Die Behandlungswerkzeuge sind in einem Gehäuse 6' untergebracht, wobei die Statorgamitur mit dem Gehäuse drehfest verbunden ist.1 shows two complementary treatment tools that can be moved relative to one another 1 and 2, which are in engagement with each other so that they can cooperate. The selected representation in the form of a section in side view shows that radially from the inside to the outside belonging to different treatment tools Alternate teeth 4, 3, 4 ', 3', 4 ", 3". The arrangement is such that the row of teeth a treatment tool each in the intermediate space 11 (Fig. 3) of the complementary tool is sufficient and a distance a to the teeth of the takes complementary treatment tool. The one on the left belongs here Treatment tool 1 to the stator 6 and treatment tool 2 to the right on the rotor 5. The axis of rotation, not shown, is horizontal here, and the The radial transport direction of the fibrous material lies in vertical planes. The last Row of teeth with teeth 3 "belongs to the stator set. The treatment tools are housed in a housing 6 ', the stator armature with the housing being rotationally fixed connected is.

Derartige Garnituren sind grundsätzlich bereits bekannt und werden beispielsweise zum Entstippen oder Dispergieren eingesetzt. Die entscheidende Neuerung findet sich im Bereich der Austragsvorrichtung 8. Diese weist in dem hier gezeigten Beispiel ein feststehendes Umlenkelement 9 mit einer Kontur 10 auf, deren Form den radial austretenden Faserstoff in axiale Richtung umlenkt. Es wirkt zusammen mit einer Anzahl von Radialvorsprüngen 7 (nur einer gezeichnet), die sich um den Überstand b über den äußersten Rand des Rotors 5 hinaus erstrecken.Such sets are basically already known and are used, for example De-sticking or dispersing used. The decisive innovation can be found in the Area of the discharge device 8. This shows in the example shown here fixed deflection element 9 with a contour 10, the shape of which is radial emerging fiber material is deflected in the axial direction. It works together with one Number of radial projections 7 (only one drawn), which are about the projection b extend beyond the outermost edge of the rotor 5.

Fig. 2 zeigt in Ansicht radial von außen einen Radialvorsprung 7, welcher jeweils in Umfangsrichtung die Fläche A bzw. A' aufweist. Man sieht einige der äußersten Zähne 4", die sich vom Behandlungswerkzeug 2 ausgehend axial in Richtung zum nicht gezeichneten komplementären Werkzeug erstrecken.Fig. 2 shows a view radially from the outside of a radial projection 7, each in Has the surface A or A 'circumferential direction. You can see some of the outermost teeth 4 ", starting from the treatment tool 2 axially in the direction of not drawn complementary tool.

In der Aufsicht gemäß Fig. 3 auf eine Rotorgamitur erkennt man die ringförmigen Zwischenräume 11. Auch die Zähne 4, 4', 4" sind in ringförmigen Reihen angeordnet. In the supervision according to FIG. 3 on a rotor assembly one recognizes the annular ones Spaces 11. The teeth 4, 4 ', 4 "are arranged in annular rows.

Von der Vielzahl sind nur einige gezeichnet, teils im Schnitt, teils in Aufsicht Ihre Form ist bekannt und richtet sich nach dem Verwendungszweck der Garnitur. Am radial äußeren Rand der Rotorgarnitur sind bei dem hier gezeichneten Beispiel insgesamt drei Radialvorsprünge 7 vorhanden, die jeweils einen Abstand von 120° voneinander haben. Die zweckmäßige Anzahl der Radialvorsprünge hängt selbstverständlich von den Bedingungen, z.B. Gamiturdurchmesser und Drehzahl ab. Sie verlaufen Ober eine Umfangserstreckung c, die hier bei etwa 10° liegt Der Auflaufwinkel α zwischen dem Radius und den Flächen A, A' beträgt ca. 20°.Only a few of the multitude are drawn, partly in section, partly under supervision Form is known and depends on the intended use of the set. On the radial outer edge of the rotor assembly are three in the example shown here Radial projections 7 are available, which are each at a distance of 120 ° from one another. The appropriate number of radial projections depends of course on the Conditions, e.g. Gear diameter and speed from. They run above one Circumferential extent c, which is about 10 ° here, the run-up angle α between the Radius and the areas A, A 'is approximately 20 °.

Fig.4 zeigt die Aufsicht auf eine Statorgamitur mit den Zähnen 3, 3', 3", zwischen denen sich die Zwischenräume 11 befinden sowie auch die Kontur 10 des Umlenkelementes 9. Bei der hier gezeigten Ausführung handelt es sich um den Teil einer erfindungsgemäßen Vorrichtung, deren Rotationsachse waagerecht liegt. Die Ansicht dieser Figur ist so zu verstehen, daß die Richtung gemäß Pfeil 12 oben ist. Wegen der bereits beschriebenen Verhältnisse, insbesondere im oberen Bereich der Behandlungsvorrichtung, ist dort das Umlenkelement 9 angebracht. Es erstreckt sich hier über einen Umfangswinkel von ca. 270°. Variationen dieses Umfangswinkels sind durch Experimente bestimmbar. In anderen Fällen, in denen die Rotationsachse senkrecht steht, ist das Umlenkelement im wesentlichen am gesamten Umfang vorzusehen.4 shows the top view of a stator gear with teeth 3, 3 ', 3 ", between which are the spaces 11 and also the contour 10 of the Deflection element 9. The embodiment shown here is part of a Device according to the invention, the axis of rotation of which is horizontal. The view this figure is to be understood so that the direction according to arrow 12 is above. Because of the conditions already described, especially in the upper range of Treatment device, the deflection element 9 is attached there. It stretches here over a circumferential angle of approx. 270 °. There are variations of this circumferential angle can be determined by experiments. In other cases where the axis of rotation is vertical, the deflecting element is essentially on the entire circumference provided.

Bei dem in Fig. 5 gezeigten Fall sind sowohl das Umlenkelement 9 als auch die Radialvorsprünge 7 Teile der entsprechenden Garnituren und damit aus demselben Material wie deren Zähne. Natürlich kann dieses Zusammenfassen auch lediglich bei der Rotor- oder Statorgamitur erfolgen. Diese Figur zeigt (gestrichelt) als Alternative einen Radialvorsprung 7', der direkt auf der Grundplatte des Rotors (5) angebracht ist.In the case shown in FIG. 5, both the deflection element 9 and the Radial projections 7 parts of the corresponding sets and thus from the same Material like their teeth. Of course, this can only be summarized in the Rotor or stator gear set. This figure shows (dashed) as an alternative a radial projection 7 'which is mounted directly on the base plate of the rotor (5).

Fig. 6 zeigt schematisch eine mögliche Form der stoffberührten Kontur 10 am Umlenkelement 9. Bei dieser Ausgestaltung wird die Kontur 10 als Teil eines Torus' T gebildet. Natürlich sind auch andere Formen denkbar, mit denen die Umlenkung erfolgen kann.6 schematically shows a possible shape of the contour 10 in contact with the material Deflection element 9. In this embodiment, the contour 10 is part of a torus' T educated. Of course, other forms are also conceivable with which the deflection takes place can.

Claims (13)

  1. A device for dispersing high-consistency waste paper, comprising at least two treatment tools (1, 2) which are movable relative to one another,
    1.1 which each have a substantially rotationally symmetrical form and are arranged coaxially to one another,
    1.2 which have teeth (3, 3', 3", 4, 4', 4") in annular rows concentric to their centre, between which tooth spaces are located which form free cross-sections through which the pulp to be treated can flow,
    1.3 which have annular gaps (11) between the rows of teeth,
    1.4 which are positioned relative to each other such that at least one row of teeth of a treatment tool (1, 2) extends into an annular gap (11) in the other, complementary, treatment tool (2, 1),
    1.5 the device containing at least one discharge device (8) for the pulp which emerges radially outwards,
    characterised in that
    the discharge device (8) contains a deflecting element (9) with a profile(10) which is shaped such that it deflects radially-emerging pulp into approximately an axial direction, without dispersion of the waste paper being able to take place, and that the treatment tool (2) which is movable relative to the housing (6) of the device is provided in the region of the external diameter with at least one radial projection (7) which extends beyond the radially outermost edge.
  2. A device according to Claim 1,
    characterised in that
    one treatment tool (1) is associated with a fixed stator (6) and the complementary treatment tool (2) with a drivable rotor (5).
  3. A device according to Claim 2,
    characterised in that
    the axis of rotation is horizontal.
  4. A device according to Claim 1, 2 or 3,
    characterised in that
    that at least one radial projection (7) forms part of the movable treatment tool (2).
  5. A device according to Claim 2,
    characterised in that
    the radial projecting length (b) of the radial projection (7) beyond the periphery of the rotor (5) is between 3 and 50 mm.
  6. A device according to Claim 5,
    characterised in that
    the radial projecting length (b) of the radial projection (7) beyond the periphery of the rotor (5) is between 3 and 20 mm.
  7. A device according to one of the preceding claims,
    characterised in that
    the radial projection (7) in the peripheral direction has on at least one side a surface (A, A') which is at an approach angle (α) to the radius of between 10° and 45°.
  8. A device according to one of the preceding claims,
    characterised in that
    the peripheral extent (c) of the radial projection (7) has an angle of between 3° and 15°.
  9. A device according to one of Claims 1 to 7,
    characterised in that
    the peripheral extent (c) of the radial projection (7) has an angle of 360°.
  10. A device according to one of the preceding claims,
    characterised in that
    one treatment tool (2) has a single radial projection (7).
  11. A device according to one of the preceding claims,
    characterised in that
    the radial projection (7) extends non-axially into the treatment region of the complementary treatment tool.
  12. A device according to one of the preceding claims,
    characterised in that
    the profile (10) of the deflecting element (9) covers a peripheral angle (d) of between 180° and 300° and extends substantially above the treatment tools.
  13. A device according to one of the preceding claims,
    characterised in that
    the profile (10) of the deflecting element (9) has the inner surface of a torus section, the centre of which coincides with that of the treatment tools.
EP98122347A 1998-01-22 1998-11-25 Apparatus for dispersing of highly consistent waste paper Expired - Lifetime EP0931584B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19802260A DE19802260A1 (en) 1998-01-22 1998-01-22 Device for the mechanical treatment of highly consistent fiber
DE19802260 1998-01-22

Publications (2)

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EP0931584A1 EP0931584A1 (en) 1999-07-28
EP0931584B1 true EP0931584B1 (en) 2004-02-04

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AT (1) ATE258823T1 (en)
DE (2) DE19802260A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI109135B (en) * 1999-09-21 2002-05-31 Metso Paper Inc Method and apparatus for treating wood pulp
DE10017898A1 (en) * 2000-04-11 2001-10-31 Voith Paper Patent Gmbh Device for dispersing high-consistency paper pulp and fittings for this device
DE102009020904A1 (en) * 2009-05-12 2010-11-18 Voith Patent Gmbh Deflaking device for dissolving flakes of fibrous material suspension, has teeth row formed by handling tool of stator, and chamber elements arranged radially outside e teeth row of stator at handling tool of rotor
WO2012041369A1 (en) * 2010-09-29 2012-04-05 Voith Patent Gmbh Deflaking device
US10030961B2 (en) 2015-11-27 2018-07-24 General Electric Company Gap measuring device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1056457B (en) * 1956-03-08 1959-04-30 Condux Werk Toothed disk mill
US3513904A (en) * 1967-10-26 1970-05-26 Wyman Curtis Lane Self-pressurizing feeder head device
AT375417B (en) * 1980-11-25 1984-08-10 Escher Wyss Gmbh DISPERSING DEVICE FOR THE TREATMENT OF WASTE PAPER
US5042726A (en) * 1989-11-13 1991-08-27 Sunds Defibrator Ab Apparatus and method for conjoint adjustment of both the inner and outer grinding spaces of a pulp defibrating apparatus
DE19523704C2 (en) * 1995-06-29 2000-08-10 Voith Sulzer Stoffaufbereitung Device for the mechanical treatment of highly consistent fiber
DE19541891A1 (en) * 1995-11-10 1997-05-22 Voith Sulzer Stoffaufbereitung Device for the treatment of highly consistent fiber

Also Published As

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DE19802260A1 (en) 1999-07-29
EP0931584A1 (en) 1999-07-28
ATE258823T1 (en) 2004-02-15
DE59810711D1 (en) 2004-03-11

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