EP1147806A1 - 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
EP1147806A1
EP1147806A1 EP01104248A EP01104248A EP1147806A1 EP 1147806 A1 EP1147806 A1 EP 1147806A1 EP 01104248 A EP01104248 A EP 01104248A EP 01104248 A EP01104248 A EP 01104248A EP 1147806 A1 EP1147806 A1 EP 1147806A1
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European Patent Office
Prior art keywords
teeth
rows
minimum axial
sets
tooth
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Granted
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EP01104248A
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German (de)
French (fr)
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EP1147806B1 (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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    • 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
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a device for dispersion according to the preamble of Claim 1.
  • a similar device for dispersing is for example from DE-PS 30 47 013 known. It serves to intensively mechanically and thermally recycle waste paper process, whereby the contaminants contained therein detached from the fibers, crushed and / or brought below the visibility limit.
  • the machine is used in such machines Fibrous material is not processed in a pumpable suspension, but in the form of a doughy or crumbly high consistency substance, preferably with a dry content between 20 and 35%. In this way, considerably higher shear forces can be applied transfer the pulp, whereby the stated goals can be achieved without doing so there is a significant change in fiber length.
  • the effect mechanical treatment by heat e.g. by hiring one Fiber temperature of 90 ° Celsius or above.
  • the distance between the sets can be changed, namely by moving the sets axially against each other.
  • This adjustment process allows the effect of the device to be varied in such a way that it meets the requirements. It is obvious that in the case of tightening Intervals the transmitted mechanical power increases.
  • the possibility of Axial adjustment is particularly advantageous if the Has set a certain wear, which leads to an increase in the Distances leads.
  • the width of the distances influences the power consumption and also the Volume flow of the high consistency substance through the disperser. The well-known re-enactment can remedy the situation, but it is still not possible with advanced Wear the dispersing machine as optimally as with new sets. As a result, the trimmings often need to be replaced, though not yet are worn out.
  • a disc homogenizer described in SU 1 238 782 A is also included equipped with a large number of axially interlocking teeth, but can only pasty, well sliding materials and not highly consistent paper fiber to process.
  • the invention is based on the object, the devices for dispersing highly consistent paper pulp to improve the longer life of the Trimmings until replacement is achieved without undue deterioration of the dispersing effect has to be accepted.
  • 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. They are arranged in relation to each other that everywhere there is a minimal distance between relatively moving surfaces is observed; this can advantageously be larger than 1 mm.
  • the chosen one Representation in the form of a section in side view shows that radial the teeth 3, 4, 3 ', 4' belonging to the various sets from the inside out etc. alternate up to the outer teeth 3 ", 4".
  • the tooth feet are too far predominantly in each case on a level E1 of a set 1 or E2 of second set 2. This allows the material flow in the radially outer part of the Develop sets particularly well and do not tend to get caught and / or Bake on.
  • Deviations from this flat arrangement can, however Immediate central inlet area may be useful (rows of teeth with teeth 3 or 4).
  • the teeth row of a set extends into the space between complementary set, with the intended operation of the device Clearances between complementary sets of teeth are maintained have to.
  • the set 2 shown on the left belongs to the stator 6 and the one shown on the right Set 1 to rotor 5. This is held by a shaft 10 and in rotation transferred.
  • the highly consistent paper pulp passes through the feed pipe 9 with the help a screw conveyor 12 centrally in the disperser.
  • a substance is relatively tough, different from e.g. a pumpable paper fiber suspension, such as that in deflipers or Refiners is processed. It is first captured by the spinner cross 11 and then promoted in the trimmings.
  • the radially innermost row of teeth belongs to the rotor assembly and the radially outermost to the stator set.
  • the axis of rotation of the rotor 5 lies here horizontal, and the radial transport direction of the highly consistent paper pulp lies in vertical planes.
  • the sets are housed in a housing 13.
  • the set 2 belonging to the stator 6 can be moved in with the aid of a displacement device 8 Axial direction can be adjusted by a few millimeters. As already stated, can thereby the distance between the complementary sets 1 and 2 den Can be adjusted accordingly.
  • the sets 1 and 2 designed such that they have larger axial distances radially on the inside than radially Outside. You can see here that e.g. on the inner tooth 3 between the tooth tip and axially opposite a clothing surface there is a distance a that is significantly larger than the distance c, which is on the radially last tooth 3 '' 'of the clothing 1 opposite set 2 forms.
  • the axial distances b are also on the tooth flanks and d, which also change due to the adjustment process if they - as drawn here - are oblique to the axial direction. Therefore here are the Axial distances b radially inside larger than the axial distances d radially outside.
  • axial distances on the tooth flanks do not always have to meet these criteria be designed. As a result of the slope there is already one on the flanks There is a larger adjustment range up to the contact of the counter surface than on the Tooth tips.
  • Fig. 2 shows in supervision a Dispergergarnitursatz, so a rotor and one Stator assembly.
  • the annular spaces 14 can be seen.
  • the teeth 3, 3 ', 3 ", 4, 4 ', 4" (drawn cut) are arranged in annular rows and extend into the corresponding spaces 14 of the counter set. Of the Many teeth are shown only a few. Remain between adjacent teeth Tooth gaps 7 free for the flow of the fibrous material.
  • the shape of the teeth depends according to the intended use of the set.
  • the cross-section 21 is through Section is formed in the radial plane, a square, in particular a rectangle.
  • the Cross sections 21 can be slightly rounded at the corners, e.g. for trimmings whose Tooth gaps 7 are already formed during casting. Teeth with such cross sections are generally ideal for dispersing highly consistent fiber.
  • the set of fittings shown in Fig. 3 also consists of two sets 1 and 2, although are not engaged here, but are aligned with each other. I.e. you can by Movement on the axially directed allocation lines 21 in engagement in the disperger to be brought.
  • These sets show a concrete practical example of Realization of the invention.
  • the height H2 of the inner tooth 3 of the set 1 same as that of the three outer teeth 3 ', 3 ". The height is in each case above the measured back surface 20 of the set.
  • the radially innermost tooth 3 of the set 1 as high as e.g. the teeth of the three outer ones Rows of teeth; nevertheless, the task can be solved because the base plate of the Counterpart 2 is thinner at this point.
  • the set 2 belonging to the stator has two radially inner rows of teeth with a lower height H3 than the four further external rows of teeth that have the smaller height H4.
  • this is an example which the inventive Design of the dispersing device clarifies.
  • FIG. 5 two interlocking sets are drawn in somewhat more detail, without but to reveal all constructive features.
  • the radially inner one is shown Area 17, a middle area 18 and the radially outer area 19.
  • the middle 17, that is between the teeth 3 and 4 of the inner Rows of teeth and the teeth 3 "or 4" of the outermost rows of teeth can be "Intermediate solutions” can be selected when choosing the distances e or f. With that Values meant between those for the distances a, b, c and d already mentioned lie.
  • the specifically determined wear behavior can be taken into account here.
  • a centering collar 16 is used for exact centering of the clothing 1 belonging to the rotor provided, but not on the outside diameter of this set, so that there forms a radial projection.
  • Such axial projections can be made of the same material as the set, e.g. without big extra effort to be cast on.

Abstract

An assembly to disperse paper fiber material, with a high consistency, has a structured clothing tooth set (1, 2). At least a part of the minimum axial gaps (a, b) between the clothing sections at their radial inner zone is significantly larger than the minimum axial gaps (c, d) in the radial outer zone. The paper fiber dispersion clothing set has the feet of at least 80% of the radially outer teeth (3', 3, 4', 4) of a clothing set on a common plane (E1, E2). One clothing set is a component part of a stator (6) and the other clothing set is a part of a powered rotor (5). The minimum axial gap (a) at the tips of the teeth at the radial inner zone of the clothing sets is significantly larger than the minimum axial gap (c) at the teeth tips in the radial outer zone. At the clothing set for the rotor, in at least two of the rows of the radially inner teeth and a maximum of five rows, the minimum axial gaps (a) at the tips of the teeth are significantly larger than the minimum axial gaps (b) in the other rows of teeth in the clothing set. The minimum axial gaps (d) between the tooth flanks are equal in different rows of teeth, as long as their feet lie on the common planes. The minimum axial gaps (b) at the tooth flanks in the radial inner zones of the clothing sets are significantly larger than the minimum axial gaps (d) at the tooth flanks in the radial outer zone. At the clothing set for the rotor, in at least two of the rows of the radially inner teeth and a maximum of five rows, the minimum axial gaps (b) at the flanks of the teeth are significantly larger than the minimum axial gaps (d) in the other rows of teeth in the clothing set. At the clothing set for the stator and the rotor, in at least two of the rows of the radially inner teeth and a maximum of four rows, the height of the teeth are lower over the clothing laying surface than in the other rows. The difference of the minimum axial gaps is at least 2 mm or at least 5 mm and at least 10% of the axial tooth height.

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 ähnliche Vorrichtung zum Dispergieren ist zum Beispiel aus der DE-PS 30 47 013 bekannt. Sie dient dazu, Altpapierstoff 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.A similar device for dispersing is for example from DE-PS 30 47 013 known. It serves to intensively mechanically and thermally recycle waste paper process, whereby the contaminants contained therein detached from the fibers, crushed and / or brought below the visibility limit. Different to for example in pulp refiners, the machine is used in such machines Fibrous material is not processed in a pumpable suspension, but in the form of a doughy or crumbly high consistency substance, preferably with a dry content between 20 and 35%. In this way, considerably higher shear forces can be applied transfer the pulp, whereby the stated goals can be achieved without doing so there is a significant change in fiber length. In many cases, the effect mechanical treatment by heat, e.g. by hiring one 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, den sogenannten Garnituren, nicht berühren, sondern sich vielmehr in einem Abstand von ca. 0,5 mm oder mehr mit relativ hoher Geschwindigkeit aneinander vorbeibewegen. Günstig ist, dass bei Garnituren dieser Art eine sehr große Anzahl von Zähnen beteiligt ist, so dass der Papierfaserstoff durch viele Schlitze (Zahnlücken) in kleine Teilströme aufgeteilt wird. Es sind ohne weiteres z.B. zwölf Stufen (Zahnreihen) hintereinander möglich. Die Anordnung der Zahnreihen im Dispergierbereich mit Zahnfüßen auf einer Ebene hat den besonderen Vorteil, dass der Radialfluss des Stoffes im Dispergierbereich optimal ist. 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. It is favorable that with this type of clothing a very large number of teeth is involved, so the pulp by many Slots (tooth gaps) is divided into small substreams. Without further ado, e.g. twelve steps (rows of teeth) in a row possible. The arrangement of the rows of teeth in the Dispersion area with tooth feet on one level has the particular advantage that the Radial flow of the substance in the dispersion area is optimal.

Garnituren dieser Art sind kompakt und haben eine ausgezeichnete Dispergierwirkung. In der Regel werden in einer Dispergiervorrichtung eine stillstehende Stator- und eine bewegte Rotorgarnitur verwendet. Garnituren können aus Kreisringsegmenten zu einem Vollkreis zusammengesetzt sein.Sets of this type are compact and have an excellent dispersing action. As a rule, a stationary stator and a moving rotor set used. Trimmings can be made from circular ring segments into one Be a full circle.

Bei Vorrichtungen der hier behandelten Art kann der Abstand zwischen den Garnituren verändert werden, und zwar indem die Garnituren axial gegeneinander bewegt werden. Dieser Einstellvorgang gestattet es, die Wirkung der Vorrichtung so zu variieren, dass sie den Anforderungen entspricht. Es ist einleuchtend, dass bei enger werdenden Abständen die übertragene mechanische Leistung ansteigt. Die Möglichkeit der Axialverstellung ist besonders dann von Vorteil, wenn sich durch längeren Gebrauch der Garnitur ein gewisser Verschleiß eingestellt hat, der zu einer Vergrößerung der Abstände führt. Die Weite der Abstände beeinflusst die Leistungsaufnahme und auch den Mengenstrom des Hochkonsistenzstoffes durch den Disperger. Das bekannte Nachstellen kann zwar Abhilfe schaffen, es ist aber dennoch nicht möglich, bei fortgeschrittenem Verschleiß die Dispergiermaschine so optimal wie mit neuen Garnituren zu betreiben. Infolgedessen müssen die Garnituren oft ausgetauscht werden, obwohl sie noch nicht verschlissen sind.In devices of the type discussed here, the distance between the sets can be changed, namely by moving the sets axially against each other. This adjustment process allows the effect of the device to be varied in such a way that it meets the requirements. It is obvious that in the case of tightening Intervals the transmitted mechanical power increases. The possibility of Axial adjustment is particularly advantageous if the Has set a certain wear, which leads to an increase in the Distances leads. The width of the distances influences the power consumption and also the Volume flow of the high consistency substance through the disperser. The well-known re-enactment can remedy the situation, but it is still not possible with advanced Wear the dispersing machine as optimally as with new sets. As a result, the trimmings often need to be replaced, though not yet are worn out.

Aus der DE 29 31 375 A ist ein mit Zahnreihen ausgestatteter Mahlrefiner für hochkonsistenten Papierstoff und für stückiges Material wie Holzspäne bekannt. Für Fasern eingesetzt, dient er der schonenden Mahlung, bei der ohne Faserkürzung die Wasseraufnahme und Elastizität der Fasern erhöht werden soll. Der eigentlichen Mahlung geht eine Vorbehandlung mit einigen kräftiger ausgebildeten Zähnen voraus, deren Abstände an den Zahnflanken beträchtlich größer sind als die entsprechenden in der Mahlzone. Ein solcher Refiner ist zum effektiven Dispergieren nicht geeignet.DE 29 31 375 A describes a grinding refiner equipped with rows of teeth for highly consistent paper stock and known for lumpy material such as wood chips. For Fibers used, it is used for gentle grinding, in which without shortening the Water absorption and elasticity of the fibers should be increased. The real one Grinding is preceded by pretreatment with some more powerful teeth, whose distances on the tooth flanks are considerably larger than the corresponding ones in the grinding zone. Such a refiner is not suitable for effective dispersion.

Ein in der SU 1 238 782 A beschriebener Scheibenhomogenisierer ist zwar auch mit einer hohen Zahl von axial ineinander greifenden Zähnen ausgestattet, kann aber nur pastöse, gut gleitende Materialien und nicht hochkonsistenten Papierfaserstoff verarbeiten.A disc homogenizer described in SU 1 238 782 A is also included equipped with a large number of axially interlocking teeth, but can only pasty, well sliding materials and not highly consistent paper fiber to process.

Der Erfindung liegt die Aufgabe zu Grunde, die Vorrichtungen zur Dispergierung von hochkonsistentem Papierfaserstoff so zu verbessern, dass eine längere Lebensdauer der Garnituren bis zum Austausch erzielt wird, ohne dass eine unzulässige Verschlechterung des Dispergiereffekts in Kauf genommen werden muss.The invention is based on the object, the devices for dispersing highly consistent paper pulp to improve the longer life of the Trimmings until replacement is achieved without undue deterioration of the dispersing effect has to be accepted.

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

Bei der erfindungsgemäß ausgestalteten Dispergiervorrichtung wird berücksichtigt, dass im radial inneren Bereich der Garnituren ein geringerer Verschleiß auftritt als im radial äußeren. Dieser Effekt ist zur Hauptsache darauf zurückzuführen, dass die Umfangsgeschwindigkeit von innen nach außen stetig zunimmt, was dann auch zu einer größeren Relativgeschwindigkeit der miteinander zusammenwirkenden Garnituren führt. Die für den Dispergiereffekt unerlässliche hohe Relativgeschwindigkeit bedingt einen höheren Verschleiß gerade an den Stellen, an denen der größte Anteil der Dispergierarbeit geleistet wird. Wegen der erfindungsgemäßen Merkmale besteht die Möglichkeit, diesen Verschleiß durch Axialverstellung auszugleichen.In the case of the dispersing device designed according to the invention, it is taken into account that less wear occurs in the radially inner area of the sets than in radially outer. The main reason for this effect is that the Circumferential speed increases steadily from the inside out, which also leads to a greater relative speed of the interacting sets leads. The high relative speed, which is essential for the dispersing effect, is the reason a higher wear especially in the places where the largest part of the Dispersion work is done. Because of the features of the invention Possibility to compensate for this wear through axial adjustment.

Möglicherweise kann infolge der im Neuzustand größeren Axialabstände im radial inneren Bereich der Garnituren ein gewisser Anteil von nicht oder nur schwach dispergiertem Stoff diesen Bereich passieren. Wegen der nachfolgenden radial äußeren Dispergierzone kann das aber hingenommen werden. Im Neuzustand dispergieren diese Teile der Garnitur ohnehin besonders gut. Insgesamt wird die Garnitur also auch im Neuzustand ihren Zweck erfüllen. So betrachtet können durch die erfindungsgemäßen Maßnahmen die Garnituren über eine lange Zeitdauer optimal eingesetzt und ausgenutzt werden, so dass hier ein weit besserer Kompromiss gefunden wurde, als es bisher der Fall war.Possibly due to the larger axial distances in the radial inner area of the sets a certain proportion of not or only weakly dispersed substance pass this area. Because of the following radially outer This can be tolerated in the dispersion zone. They disperse when new Parts of the set are particularly good anyway. Overall, the set is also in the New condition serve its purpose. Seen in this way by the invention Measures the sets optimally used and exploited over a long period of time so that a far better compromise was found here than has been the case up to now Case was.

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
Aufsicht auf eine Garnitur;
Fig. 3 und 4
Teilansicht eines Garnitursatzes in zwei verschiedenen Positionen zueinander;
Fig. 5
eine Detailansicht zweier in Arbeitsstellung zueinander stehenden Garnituren.
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
Supervision of a set;
3 and 4
Partial view of a set in two different positions to each other;
Fig. 5
a detailed view of two sets standing in the working position to each other.

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. Sie werden so zueinander angeordnet, dass überall ein minimaler Abstand zwischen relativ zueinander bewegten Flächen eingehalten wird; dieser kann mit Vorteil größer als 1 mm sein. 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 Zahnfüße stehen dabei zum weit überwiegenden Teil jeweils auf einer Ebene E1 der einen Garnitur 1 bzw. E2 der zweiten Garnitur 2. Dadurch kann sich der Stoffstrom im radial äußeren Teil der Garnituren besonders gut ausbilden und neigt nicht zum Hängenbleiben und/oder Anbacken. Abweichungen von dieser ebenen Anordnung können allerdings im unmittelbaren zentralen Einlaufbereich sinnvoll sein (Zahnreihen mit den Zähnen 3 bzw. 4). 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.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. They are arranged in relation to each other that everywhere there is a minimal distance between relatively moving surfaces is observed; this can advantageously be larger than 1 mm. The chosen one Representation in the form of a section in side view shows that radial the teeth 3, 4, 3 ', 4' belonging to the various sets from the inside out etc. alternate up to the outer teeth 3 ", 4". The tooth feet are too far predominantly in each case on a level E1 of a set 1 or E2 of second set 2. This allows the material flow in the radially outer part of the Develop sets particularly well and do not tend to get caught and / or Bake on. Deviations from this flat arrangement can, however Immediate central inlet area may be useful (rows of teeth with teeth 3 or 4). The teeth row of a set extends into the space between complementary set, with the intended operation of the device Clearances between complementary sets of teeth are maintained have to.

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 Schleuderkreuz 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.The set 2 shown on the left belongs to the stator 6 and the one shown on the right Set 1 to rotor 5. This is held by a shaft 10 and in rotation transferred. The highly consistent paper pulp passes through the feed pipe 9 with the help a screw conveyor 12 centrally in the disperser. Such a substance is relatively tough, different from e.g. a pumpable paper fiber suspension, such as that in deflipers or Refiners is processed. It is first captured by the spinner cross 11 and then promoted in the trimmings. The radially innermost row of teeth belongs to the rotor assembly and the radially outermost to the stator set. The axis of rotation of the rotor 5 lies here horizontal, and the radial transport direction of the highly consistent paper pulp lies in vertical planes. The sets are housed in a housing 13.

Die zum Stator 6 gehörende Garnitur 2 kann mit Hilfe einer Verschiebeeinrichtung 8 in Axialrichtung um einige Millimeter verstellt werden. Wie bereits ausgeführt wurde, kann dadurch der Abstand zwischen den komplementären Garnituren 1 und 2 den Erfordernissen entsprechend eingestellt werden. Erfindungsgemäß sind die Garnituren 1 und 2 so ausgestaltet, dass sie radial innen größere Axialabstände haben als radial außen. Man erkennt hier, dass z.B. am inneren Zahn 3 zwischen Zahnspitze und axial gegenüberliegender Garniturfläche ein Abstand a besteht, der signifikant größer ist als der Abstand c, der sich am radial letzten Zahn 3''' der Garnitur 1 zur gegenüberliegenden Garnitur 2 bildet. Auch an den Zahnflanken sind die Axialabstände b und d eingezeichnet, die sich durch den Verstellvorgang ebenfalls verändern, wenn sie - wie hier gezeichnet - schräg sind gegenüber der Axialrichtung. Daher sind hier auch die Axialabstände b radial innen größer als die Axialabstände d radial außen. Die Axialabstände an den Zahnflanken müssen jedoch nicht immer gemäß diesen Kriterien gestaltet sein. Infolge der Schräge ist nämlich an den Flanken ohnehin schon ein größerer Verstellweg bis zur Berührung der Gegenfläche vorhanden als an den Zahnspitzen.The set 2 belonging to the stator 6 can be moved in with the aid of a displacement device 8 Axial direction can be adjusted by a few millimeters. As already stated, can thereby the distance between the complementary sets 1 and 2 den Can be adjusted accordingly. According to the invention, the sets 1 and 2 designed such that they have larger axial distances radially on the inside than radially Outside. You can see here that e.g. on the inner tooth 3 between the tooth tip and axially opposite a clothing surface there is a distance a that is significantly larger than the distance c, which is on the radially last tooth 3 '' 'of the clothing 1 opposite set 2 forms. The axial distances b are also on the tooth flanks and d, which also change due to the adjustment process if they - as drawn here - are oblique to the axial direction. Therefore here are the Axial distances b radially inside larger than the axial distances d radially outside. The However, axial distances on the tooth flanks do not always have to meet these criteria be designed. As a result of the slope there is already one on the flanks There is a larger adjustment range up to the contact of the counter surface than on the Tooth tips.

Fig. 2 zeigt in Aufsicht einen Dispergergarnitursatz, also eine Rotor- und eine Statorgarnitur. Man erkennt die ringförmigen Zwischenräume 14. Auch die Zähne 3, 3', 3", 4, 4', 4" (geschnitten gezeichnet) sind in ringförmigen Reihen angeordnet und reichen in die entsprechenden Zwischenräume 14 der Gegengarnitur hinein. Von der Vielzahl der Zähne sind nur einige dargestellt. Zwischen benachbarten Zähnen bleiben Zahnlücken 7 für den Durchfluss des Faserstoffes frei. Die Form der Zähne richtet sich nach dem Verwendungszweck der Garnitur. Mit Vorteil ist der Querschnitt 21, der durch Schnitt in radialer Ebene gebildet wird, ein Viereck, insbesondere ein Rechteck. Die Querschnitte 21 können an den Ecken leicht gerundet sein,z.B. bei Garnituren, deren Zahnlücken 7 bereits beim Gießen gebildet werden. Zähne mit solchen Querschnitten sind im Allgemeinen für das Dispergieren von hochkonsistentem Faserstoff optimal.Fig. 2 shows in supervision a Dispergergarnitursatz, so a rotor and one Stator assembly. The annular spaces 14 can be seen. The teeth 3, 3 ', 3 ", 4, 4 ', 4" (drawn cut) are arranged in annular rows and extend into the corresponding spaces 14 of the counter set. Of the Many teeth are shown only a few. Remain between adjacent teeth Tooth gaps 7 free for the flow of the fibrous material. The shape of the teeth depends according to the intended use of the set. Advantageously, the cross-section 21 is through Section is formed in the radial plane, a square, in particular a rectangle. The Cross sections 21 can be slightly rounded at the corners, e.g. for trimmings whose Tooth gaps 7 are already formed during casting. Teeth with such cross sections are generally ideal for dispersing highly consistent fiber.

Auch der in Fig. 3 gezeigte Garniturensatz besteht aus zwei Garnituren 1 und 2, die zwar hier nicht im Eingriff stehen, aber zueinander ausgerichtet sind. D.h. sie können durch Bewegung auf den im Disperger axial gerichteten Zuordnungslinien 21 in Eingriff gebracht werden. Diese Garnituren zeigen ein konkretes praktisches Beispiel zur Realisierung der Erfindung. So ist z.B. die Höhe H2 des inneren Zahnes 3 der Garnitur 1 gleich wie die der drei äußeren Zähne 3', 3". Dabei wird die Höhe jeweils über der rückseitigen Auflagefläche 20 der Garnitur gemessen. Zwar ist bei diesem Beispiel der radial innerste Zahn 3 der Garnitur 1 genau so hoch wie z.B. die Zähne der drei äußeren Zahnreihen; dennoch lässt sich die gestellte Aufgabe lösen, da die Grundplatte der Gegengarnitur 2 an dieser Stelle dünner ist. Die zum Stator gehörende Garnitur 2 hat zwei radial innen liegende Zahnreihen mit einer geringeren Höhe H3 als die vier weiter außen liegenden Zahnreihen, welche die kleinere Höhe H4 aufweisen. Wie bereits ausgeführt wurde, handelt es sich hier um ein Beispiel, welches die erfindungsgemäße Ausgestaltung der Dispergiervorrichtung verdeutlicht. Es gibt natürlich eine größere Anzahl von verschiedenen Möglichkeiten, um Dispergergarnituren so aufeinander abzustimmen, dass sie als Garniturensatz die geforderten unterschiedlichen Abstände aufweisen.The set of fittings shown in Fig. 3 also consists of two sets 1 and 2, although are not engaged here, but are aligned with each other. I.e. you can by Movement on the axially directed allocation lines 21 in engagement in the disperger to be brought. These sets show a concrete practical example of Realization of the invention. For example, the height H2 of the inner tooth 3 of the set 1 same as that of the three outer teeth 3 ', 3 ". The height is in each case above the measured back surface 20 of the set. In this example, the radially innermost tooth 3 of the set 1 as high as e.g. the teeth of the three outer ones Rows of teeth; nevertheless, the task can be solved because the base plate of the Counterpart 2 is thinner at this point. The set 2 belonging to the stator has two radially inner rows of teeth with a lower height H3 than the four further external rows of teeth that have the smaller height H4. As before was carried out, this is an example which the inventive Design of the dispersing device clarifies. Of course there is a bigger one Number of different ways to disperser sets so one on top of the other to coordinate that they as a set of sets the required different distances exhibit.

Der Garniturensatz gemäß Fig. 3 ist in Fig. 4 in einer Lage dargestellt, wie sie sich durch direktes Aufeinanderlegen ergibt (ohne dabei eine sinnvolle Arbeitsstellung zu erreichen). Man sieht, dass sich der radial äußere Teil an den Zahnspitzen berührt, während der radial innere Teil an den Zahnspitzen Abstände g aufweist.3 is shown in a position as it is by placing them directly on top of each other (without doing a meaningful work position to reach). You can see that the radially outer part touches at the tooth tips, while the radially inner part has g intervals at the tooth tips.

In Fig. 5 sind zwei im Eingriff stehende Garnituren etwas detaillierter gezeichnet, ohne allerdings alle konstruktiven Merkmale zu offenbaren. Gezeigt wird der radial innere Bereich 17, ein mittlerer Bereich 18 und der radial äußere Bereich 19. In der Regel haben Garnituren dieser Art zwischen drei und zwölf Zahnreihen. Bei den Zähnen 3' bzw. 4', die im mittleren Bereich 17, also zwischen den Zähnen 3 bzw. 4 der inneren Zahnreihen und den Zähnen 3" bzw. 4" der äußersten Zahnreihen liegen, können "Zwischenlösungen" bei der Wahl der Abstände e bzw. f gewählt werden. Damit sind Werte gemeint, die zwischen denen für die bereits erwähnten Abstände a, b, c und d liegen. Hier kann das konkret ermittelte Verschleißverhalten berücksichtigt werden.In Fig. 5 two interlocking sets are drawn in somewhat more detail, without but to reveal all constructive features. The radially inner one is shown Area 17, a middle area 18 and the radially outer area 19. As a rule have sets of this type between three and twelve rows of teeth. With teeth 3 'or 4 ', the middle 17, that is between the teeth 3 and 4 of the inner Rows of teeth and the teeth 3 "or 4" of the outermost rows of teeth can be "Intermediate solutions" can be selected when choosing the distances e or f. With that Values meant between those for the distances a, b, c and d already mentioned lie. The specifically determined wear behavior can be taken into account here.

Zur exakten Zentrierung der zum Rotor gehörenden Garnitur 1 ist ein Zentrierbund 16 vorgesehen, der aber nicht am Außendurchmesser dieser Garnitur liegt, so dass sich dort ein radialer Überstand bildet. Dieser enthält eine Anzahl von Axialvorsprüngen 15, die den aus dem Gamitursatz austretenden Faserstoff beschleunigen und abführen. Solche Axialvorsprünge können aus demselben Material sein wie die Garnitur, z.B. ohne großen Mehraufwand mit angegossen werden.A centering collar 16 is used for exact centering of the clothing 1 belonging to the rotor provided, but not on the outside diameter of this set, so that there forms a radial projection. This contains a number of axial projections 15, which accelerate and remove the fiber material emerging from the gauze set. Such axial projections can be made of the same material as the set, e.g. without big extra effort to be cast on.

Claims (18)

Vorrichtung zur Dispergierung von hochkonsistentem Papierfaserstoff, die mindestens zwei Garnituren (1, 2,) enthält, 1.1 die jeweils eine im wesentlichen rotationssymmetrische Form haben und axial zueinander versetzt 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, wobei die Zahnfüße der radial äußeren Zähne (3', 3", 4', 4") einer Garnitur (1, 2) zum überwiegenden Anteil jeweils auf einer Ebene (E1, E2) liegen, 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, 1.6 wobei die Garnituren (1, 2) zu Einstellungszwecken relativ zueinander in Axialrichtung bewegbar sind, dadurch gekennzeichnet, dass die Garnituren (1,2) so geformt sind, dass mindestens ein Teil der minimalen Axialabstände (a, b) zwischen den Garnituren (1, 2) im radial inneren Bereich der Garnituren (1, 2) signifikant größer ist als die minimalen Axialabstände (c, d) im radial äußeren Bereich.Device for dispersing high-consistency paper pulp, which contains at least two sets (1, 2,), 1.1 each have an essentially rotationally symmetrical shape and are arranged axially offset from 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 Fibrous material can be flowed through, the tooth feet of the radially outer teeth (3 ', 3 ", 4', 4") of a clothing (1, 2) mostly lying on one level (E1, E2), 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, 1.6 the sets (1, 2) being movable relative to each other in the axial direction for adjustment purposes, characterized in that the sets (1, 2) are shaped such that at least part of the minimum axial distances (a, b) between the sets (1, 2) in the radially inner region of the sets (1, 2) is significantly larger than the minimum axial distances (c, d) in the radially outer area. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass die Zahnfüße von mindestens 80 % der radial äußeren Zähne (3', 3", 4', 4") einer Garnitur (1, 2) jeweils auf einer Ebene (E1, E2) liegen. Device according to claim 1,
characterized in that the tooth bases of at least 80% of the radially outer teeth (3 ', 3 ", 4', 4") of a clothing (1, 2) each lie on one level (E1, E2). Vorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass eine Garnitur (2) zu einem feststehenden Stator (6) gehört und die komplementäre Garnitur (1) zu einem antreibbaren Rotor (5).Device according to claim 1 or 2,
characterized in that a set (2) belongs to a fixed stator (6) and the complementary set (1) to a drivable rotor (5). Vorrichtung nach Anspruch 1, 2 oder 3,
dadurch gekennzeichnet, dass die minimalen Axialabstände (a) an den Zahnspitzen im radial inneren Bereich der Garnituren (1,2) signifikant größer sind als die minimalen Axialabstände (c) an den Zahnspitzen im radial äußeren Bereich.Device according to claim 1, 2 or 3,
characterized in that the minimum axial distances (a) at the tooth tips in the radially inner area of the sets (1, 2) are significantly larger than the minimum axial distances (c) at the tooth tips in the radially outer area. Vorrichtung nach Anspruch 2, 3 oder 4,
dadurch gekennzeichnet, dass an mindestens zwei, höchstens fünf der radial inneren Zahnreihen der zum Rotor (5) gehörenden Garnitur (1) die minimalen Axialabstände (a) an den Zahnspitzen signifikant größer sind als die minimalen Axialabstände (b) an den übrigen Zahnreihen dieser Garnitur (1).Device according to claim 2, 3 or 4,
characterized in that on at least two, at most five of the radially inner rows of teeth of the set (1) belonging to the rotor (5), the minimum axial distances (a) at the tooth tips are significantly larger than the minimum axial distances (b) on the other rows of teeth of this set (1). Vorrichtung nach Anspruch 4 oder 5,
dadurch gekennzeichnet, dass die minimalen Axialabstände an den Zahnflanken (d, f) in unterschiedlichen Zahnreihen im wesentlichen gleich sind, sofern die Zähne (3', 3", 4', 4") auf einer Ebene (E1, E2) fußen.Device according to claim 4 or 5,
characterized in that the minimum axial distances on the tooth flanks (d, f) in different rows of teeth are essentially the same, provided that the teeth (3 ', 3 ", 4', 4") are on one level (E1, E2). Vorrichtung nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass die minimalen Axialabstände (b) an den Zahnflanken im radial inneren Bereich der Garnituren (1, 2) signifikant größer sind als die minimalen Axialabstände (d) an den Zahnflanken im radial äußeren Bereich. Device according to one of the preceding claims,
characterized in that the minimum axial distances (b) on the tooth flanks in the radially inner region of the sets (1, 2) are significantly larger than the minimum axial distances (d) on the tooth flanks in the radially outer region. Vorrichtung nach Anspruch 3,
dadurch gekennzeichnet, dass an mindestens zwei, höchstens fünf der radial inneren Zahnreihen der zum Rotor (5) gehörenden Garnitur (1) die minimalen Axialabstände (b) an den Zahnflanken signifikant größer sind als die minimalen Axialabstände (d, f) an den übrigen Zahnreihen dieser Garnitur (1).Device according to claim 3,
characterized in that on at least two, at most five of the radially inner rows of teeth of the set (1) belonging to the rotor (5), the minimum axial distances (b) on the tooth flanks are significantly larger than the minimum axial distances (d, f) on the other rows of teeth this set (1). Vorrichtung nach Anspruch 3,
dadurch gekennzeichnet, dass mindestens zwei, höchstens vier der radial inneren Zahnreihen der zum Stator (6) gehörenden Garnitur (2) eine geringere Zahnhöhe, gemessen über der Auflagefläche (20) der Garnitur (2), aufweisen als die übrigen Zahnreihen dieser Garnitur (2).Device according to claim 3,
characterized in that at least two, at most four of the radially inner rows of teeth of the set (2) belonging to the stator (6) have a lower tooth height, measured over the contact surface (20) of the set (2), than the other rows of teeth of this set (2 ). Vorrichtung Anspruch 3,
dadurch gekennzeichnet, dass mindestens zwei, höchstens vier der radial inneren Zahnreihen der zum Rotor (5) gehörenden Garnitur (1) eine geringere Zahnhöhe, gemessen über der Auflagefläche (20) der Garnitur (1), aufweisen als die übrigen Zahnreihen des Rotors.Device according to claim 3,
characterized in that at least two, at most four of the radially inner rows of teeth of the set (1) belonging to the rotor (5) have a lower tooth height, measured over the contact surface (20) of the set (1), than the other rows of teeth of the rotor. Vorrichtung nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass die Differenz der bezeichneten minimalen Axialabstände (a, b, c, d) mindestens 2 mm beträgt.Device according to one of the preceding claims,
characterized in that the difference between the designated minimum axial distances (a, b, c, d) is at least 2 mm. Vorrichtung nach Anspruch 11,
dadurch gekennzeichnet, dass die Differenz der bezeichneten minimalen Axialabstände (a, b, c, d) mindestens 5 mm beträgt. Device according to claim 11,
characterized in that the difference between the designated minimum axial distances (a, b, c, d) is at least 5 mm. Vorrichtung nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass die Differenz der bezeichneten minimalen Axialabstände (a, b, c, d) mindestens 10 % der axialen Zahnhöhe beträgt.Device according to one of the preceding claims,
characterized in that the difference between the designated minimum axial distances (a, b, c, d) is at least 10% of the axial tooth height. Vorrichtung nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass der in radialer Ebene liegende Querschnitt (21) der Zähne (3, 3', 3", 4, 4', 4") eine Viereckform hat.Device according to one of the preceding claims,
characterized in that the cross section (21) of the teeth (3, 3 ', 3 ", 4, 4', 4") lying in the radial plane has a quadrangular shape. Vorrichtung nach Anspruch 14,
dadurch gekennzeichnet, dass der in radialer Ebene liegende Querschnitt (21) der Zähne (3,3', 3", 4, 4', 4") eine Rechteckform hat.Device according to claim 14,
characterized in that the cross-section (21) of the teeth (3,3 ', 3 ", 4, 4', 4") lying in the radial plane has a rectangular shape. Vorrichtung nach Anspruch 14 oder 15,
dadurch gekennzeichnet, dass die Querschnitte (21) an den Kanten abgerundet sind.Device according to claim 14 or 15,
characterized in that the cross sections (21) are rounded at the edges. Vorrichtung nach einem der voranstehenden Ansprüche,
dadurch gekennzelchnet,
dass der minimale Abstand, den die Zähne (3, 3', 3", 4, 4', 4") der relativ zueinander bewegbaren Garnituren voneinander haben, mindestens 1 mm beträgt.Device according to one of the preceding claims,
characterized by
that the minimum distance between the teeth (3, 3 ', 3 ", 4, 4', 4") of the sets which can be moved relative to one another is at least 1 mm. Dispergergarnitur-Satz zur Verwendung in einer Dispergiervorrichtung gemäß einem der voranstehenden Ansprüche, welcher mindestens aus zwei Garnituren (1, 2), und zwar einer Rotor- und einer Statorgarnitur, besteht,
dadurch gekennzeichnet, dass die Garnituren (1, 2), wenn sie in die bestimmungsgemäße Gebrauchslage zueinander gebracht sind, an den Zahnspitzen im radial inneren Bereich solche Axialabstände (a) zur gegenüberliegenden Garnitur aufweisen, die signifikant größer sind als die Axialabstände (b) an den Zahnspitzen im radial äußeren Bereich der Garnituren (1, 2).Disperger set for use in a dispersing device according to one of the preceding claims, which consists of at least two sets (1, 2), namely a rotor set and a stator set,
characterized in that the sets (1, 2), when they are brought together in the intended position of use, have at the tooth tips in the radially inner region such axial distances (a) from the opposite set that are significantly larger than the axial distances (b) the tooth tips in the radially outer area of the sets (1, 2).
EP01104248A 2000-04-11 2001-02-22 Apparatus to disperse a high consistency paper fibers slurry and linings for this apparatus Expired - Lifetime EP1147806B1 (en)

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EP1749922A1 (en) * 2005-08-04 2007-02-07 Andritz AG Disk or disksegment and apparatus using such disks or disksegments
EP1806451A1 (en) * 2006-01-09 2007-07-11 Andritz Inc. Tooth refiner plates having V-shaped and refining method
US7478773B2 (en) 2006-01-09 2009-01-20 Andritz Inc. Tooth refiner plates having V-shaped teeth and refining method
EP2476804A1 (en) * 2006-01-09 2012-07-18 Andritz Inc. Tooth disperger plates having V-shaped teeth
WO2010057725A1 (en) * 2008-11-22 2010-05-27 Voith Patent Gmbh Method for treating a fiber suspension, particularly for dissolving flakes, and device for carrying out the method
WO2020151951A1 (en) * 2019-01-25 2020-07-30 Voith Patent Gmbh Method for controlling a device for treating high-consistency pulp
CN113330159A (en) * 2019-01-25 2021-08-31 福伊特专利有限公司 Method for controlling a device for processing high-consistency fibre material

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DE10017899A1 (en) 2001-10-18
ATE271915T1 (en) 2004-08-15
EP1147806B1 (en) 2004-07-28

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