EP0773316A1 - Device for treating high consistency pulp - Google Patents
Device for treating high consistency pulp Download PDFInfo
- Publication number
- EP0773316A1 EP0773316A1 EP96115698A EP96115698A EP0773316A1 EP 0773316 A1 EP0773316 A1 EP 0773316A1 EP 96115698 A EP96115698 A EP 96115698A EP 96115698 A EP96115698 A EP 96115698A EP 0773316 A1 EP0773316 A1 EP 0773316A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- teeth
- treatment
- webs
- fibrous material
- another
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C7/00—Crushing or disintegrating by disc mills
- B02C7/11—Details
- B02C7/12—Shape or construction of discs
-
- 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
-
- 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
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/22—Disintegrating by mills having rotary beater elements ; Hammer mills with intermeshing pins ; Pin Disk Mills
-
- 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
-
- 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
- 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
- B01F27/27—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 the mechanical treatment of highly consistent fibrous material according to the preamble of claim 1.
- Such a treatment device is known for example from DE-PS 30 47 013.
- This device which is suitable for dispersing waste paper, is used to process the material intensively mechanically and thermally, as a result of which the impurities contained therein can be detached from the fibers, shredded and / or brought below the visibility limit.
- the fibrous material is not processed in a pumpable suspension, but in the form of a doughy or crumbly high consistency material, preferably with a dry content between 20 and 40%. In this way, considerably higher shear forces can be transmitted into the fiber material, whereby the stated goals can be achieved without a substantial change in the fiber length.
- the effect of mechanical treatment is further enhanced by heat, for example by setting a fiber temperature of 90 o Celsius or even higher.
- the tooth heights that can be realized in the prior art for devices of this type also depend on the production method for the device for the mechanical treatment of highly consistent fibrous material. So there are cast circle segments, which are assembled to form a closed ring-shaped rotor or stator assembly. For casting and molding reasons, e.g. Components manufactured using the sand casting process must not be less than 6 mm wide and 6 mm wide, and the height of the teeth must usually not exceed 30 mm. Devices that are manufactured in such a method can only have a comparatively low material hardness.
- the other working method is based on closed individual rings into which the gaps have to be milled. These rings are assembled in a concentric arrangement to form a complete rotor or stator set. Because of the milling process, the gaps per se could be smaller than with the casting, but there are restrictions due to the strength requirements. Nevertheless, milled clothing rings with higher teeth can be produced than if they were cast. However, the high manufacturing costs are disadvantageous when milling.
- the invention is therefore based on the object of providing a device for the mechanical treatment of highly consistent fibrous material, with which it is possible to process a larger throughput than before while maintaining or improving the treatment effect.
- the flow cross sections between the teeth available to the fibrous material can be enlarged without fear of overloading the tooth bases.
- the connecting web between adjacent teeth brings about a counter-torque which increases the resistance to bending of the teeth.
- peak values of shear forces are distributed over several teeth.
- Fig. 1 shows two mutually movable complementary treatment tools 1 and 2 which are in engagement with each other so that they can cooperate.
- the treatment tool 1 may belong to a rotor and the treatment tool 2 to a stator.
- the treatment tool as seen in the direction of flow, is closed radially on the outside with a stator.
- the radially last ring is a rotor ring, as a result of which, for example, the material would be thrown out of the treatment apparatus.
- the selected representation in the form of a section in a side view reveals that the teeth 3, 4, 3 ', 4''which belong to different treatment tools alternate radially from the inside out. Their height is given as H or H '.
- the direction of the material flow, radially from the inside to the outside, is indicated by the arrow S. 2 shows, the arrangement is such that ring-shaped teeth each form a row of teeth and the row of teeth of a treatment tool in each case Empty space 7 (FIG. 2) of the complementary tool is sufficient. Adjacent teeth of the same row of teeth are connected to one another by webs 8, 8 ', the webs having a height of H1 or H1'. The length of the gap remaining between the web 8, 8 ′ and the base body of the treatment tool 1, 2 is indicated by L or L'.
- FIG. 2 shows a device designed according to the invention in a view from above, the teeth being shown partially cut. Only a part of the existing teeth is shown. It can be seen that the teeth are arranged concentrically in rows of teeth. In the two radially outer rows of teeth, two adjacent teeth 3 ', 4' are connected to one another by webs. It is also well possible to form such webs 8 in a ring shape and thereby connect a larger number of teeth in groups. In extreme cases, the bridge can encompass the teeth of an entire row of teeth. It should be noted that it is not necessary for all rows of teeth to be provided with webs. This measure is particularly advantageous on the radially outer rows of teeth.
- FIG. 3 For a better illustration of the device, an embodiment is shown in perspective in FIG. 3.
- the treatment tool 1, which is only partially shown, contains an annular row of teeth with teeth 3 which are connected to one another by the web 8.
- the bridge lies at the tips of the teeth. This does not have to be the case in all cases.
- the bridge could also connect the teeth in other places and stabilize them mechanically.
- the treatment tool 2 cooperating with the treatment tool 1 shown here can in principle be constructed in a similar manner.
- the side view shown in Fig. 5, schematically in section, shows two treatment tools 1 and 2, which are in engagement so that the intended use of the processing device is possible.
- the webs can be placed in such a way that they lie radially in the same area in the case of complementary treatment tools, so that the mostly undesired covering effect for the material stream passing through is minimal.
- the position and shape of such webs should be optimized in terms of strength and treatment technology.
- the machining edges can run over the entire height H or H 'of the teeth, that is, they can be longer, which is advantageous in many cases when treating the fabric.
- FIG. 7 shows a treatment machine in which two treatment tools 1, 2 are inserted. are.
- a housing 11 essentially surrounds this and has a feed opening 12 and a discharge opening 13, through which the fibrous material is to be fed in or out.
- the machine has a conveyor 14 which compresses the crumbly high-consistency substance, so that a plug is formed.
- the fibrous material is guided radially outward between the treatment tools 1, 2 (arrow S) and then leaves the housing 11 through the discharge opening 13.
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Paper (AREA)
- Treatment Of Fiber Materials (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur mechanischen Behandlung von hochkonsistentem Faserstoff gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device for the mechanical treatment of highly consistent fibrous material according to the preamble of
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 40 %. 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 90o Celsius oder noch darüber.Such a treatment device is known for example from DE-PS 30 47 013. This device, which is suitable for dispersing waste paper, is used to process the material intensively mechanically and thermally, as a result of which the impurities contained therein can be detached from the fibers, shredded and / or brought below the visibility limit. In contrast to paper pulp refiners, for example, in such machines the fibrous material is not processed in a pumpable suspension, but in the form of a doughy or crumbly high consistency material, preferably with a dry content between 20 and 40%. In this way, considerably higher shear forces can be transmitted into the fiber material, whereby the stated goals can be achieved without a substantial change in the fiber length. In many cases, the effect of mechanical treatment is further enhanced by heat, for example by setting a fiber temperature of 90 o Celsius or even higher.
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. 1 mm oder mehr aneinander vorbeibewegen. Dabei treten an den Zähnen ganz erhebliche Kräfte auf, die insbesondere den Zahnfuß belasten. Wegen der Hebelwirkung greift zusätzlich zu den Scherkräften am Zahnfuß ein hohes Moment an, das mit zunehmender Zahnhöhe stark zunimmt. Andererseits sind höhere Zähne von Vorteil, da der zur Verfügung stehende Durchtrittsquerschnitt im wesentlichen zur Zahnhöhe proportional ist. Daher läßt sich dann mit einer Vorrichtung in derselben Zeit eine entsprechend größere Menge mit gleich hoher Intensität behandeln. Mit größeren Maschineneinheiten ist fast immer eine höhere Wirtschaftlichkeit bezüglich Investitions- und Betriebskosten erreichbar.Due to the high consistency that the fibrous material has during the treatment, intensive mechanical processing is possible, although the teeth of the treatment tools which can be moved relative to one another do not touch, but rather move past one another at a distance of approximately 1 mm or more. In this case, very considerable forces occur on the teeth, which stress the tooth base in particular. Because of the leverage effect, a high moment acts in addition to the shear forces on the tooth base, which increases sharply with increasing tooth height. On the other hand, higher teeth are from Advantage, since the available cross section is essentially proportional to the tooth height. It is therefore possible to treat a correspondingly larger amount with the same high intensity with one device in the same time. Larger machine units can almost always be more cost-effective in terms of investment and operating costs.
Die im Stand der Technik realisierbaren Zahnhöhen für derartige Vorrichtungen hängen auch vom Herstellungsverfahren für die Vorrichtung zur mechanischen Behandlung von hochkonsistentem Faserstoff ab. So gibt es gegossene Kreissegmente, welche durch Aneinanderreihung zu einer geschlossenen ringförmigen Rotor- oder Statorgarnitur zusammengebaut werden. Aus gieß- und formtechnischen Gründen können bei solchen z.B. im Sandgußverfahren hergestellten Bauteilen eine Spaltbreite von 6 mm und eine Zahnbreite von 6 mm nicht unterschritten werden, und die Zahnhöhe darf meist nicht höher als 30 mm sein. Vorrichtungen, die in einem solchen Verfahren hergestellt werden, können nur eine vergleichsweise geringe Materialhärte haben. Das andere Arbeitsverfahren geht von geschlossenen Einzelringen aus, in die die Spalte eingefräst werden müssen. Diese Ringe werden in konzentrischer Anordnung zu einer kompletten Rotor- oder Statorgarnitur zusammengebaut. Wegen des Fräsverfahrens könnten die Spalte an sich kleiner sein als beim Guß, es ergeben sich aber Einschränkungen durch die Festigkeitsanforderungen. Dennoch lassen sich gefräste Garniturringe mit höheren Zähnen herstellen als wenn sie gegossen werden. Nachteilig sind allerdings beim Fräsen die hohen Fertigungskosten.The tooth heights that can be realized in the prior art for devices of this type also depend on the production method for the device for the mechanical treatment of highly consistent fibrous material. So there are cast circle segments, which are assembled to form a closed ring-shaped rotor or stator assembly. For casting and molding reasons, e.g. Components manufactured using the sand casting process must not be less than 6 mm wide and 6 mm wide, and the height of the teeth must usually not exceed 30 mm. Devices that are manufactured in such a method can only have a comparatively low material hardness. The other working method is based on closed individual rings into which the gaps have to be milled. These rings are assembled in a concentric arrangement to form a complete rotor or stator set. Because of the milling process, the gaps per se could be smaller than with the casting, but there are restrictions due to the strength requirements. Nevertheless, milled clothing rings with higher teeth can be produced than if they were cast. However, the high manufacturing costs are disadvantageous when milling.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung zur mechanischen Behandlung von hochkonsistentem Faserstoff zu schaffen, mit der es möglich ist, eine größere Durchsatzmenge als bisher zu verarbeiten unter Beibehaltung oder Verbesserung der Behandlungswirkung.The invention is therefore based on the object of providing a device for the mechanical treatment of highly consistent fibrous material, with which it is possible to process a larger throughput than before while maintaining or improving the treatment effect.
Diese Aufgabe wird durch die im Kennzeichen des Anspruchs 1 genannten Merkmale vollständig gelöst.This object is completely achieved by the features mentioned in the characterizing part of
Durch diese Maßnahmen können die dem Faserstoff zur Verfügung stehenden Strömungsquerschnitte zwischen den Zähnen vergrößert werden, ohne eine Überlastung der Zahnfüße befürchten zu müssen. Der Verbindungssteg zwischen benachbarten Zähnen bringt nämlich infolge seiner Starrheit ein Gegenmoment auf, das den Widerstand gegen Durchbiegen der Zähne erhöht. Außerdem werden Spitzenwerte von Scherkräften auf mehrere Zähne verteilt.By means of these measures, the flow cross sections between the teeth available to the fibrous material can be enlarged without fear of overloading the tooth bases. Because of its rigidity, the connecting web between adjacent teeth brings about a counter-torque which increases the resistance to bending of the teeth. In addition, peak values of shear forces are distributed over several teeth.
Die Erfindung und ihre Vorteile werden erläutert anhand von Zeichnungen. Dabei zeigen:
- Fig. 1
- Schnitt durch den wesentlichen Teil der erfindungsgemäßen Vorrichtung in Seitenansicht;
- Fig. 2
- Aufsicht auf die Vorrichtung;
- Fig. 3a
- perspektivische Darstellung eines Teiles des Behandlungswerkzeugs;
- Fig. 3b
- Seitenansicht bezüglich Fig. 3a;
- Fig. 4
- Teilansicht einer weiteren Ausführungsform eines Behandlungswerkzeugs;
- Fig. 5
- die Variante der Fig. 4 im Eingriff mit weiteren Behandlungswerkzeugen;
- Fig. 6
- Seitenansicht einer Variante, geschnitten;
- Fig. 7
- Schnitt durch eine Behandlungsmaschine, die die Vorrichtung enthält.
- Fig. 1
- Section through the essential part of the device according to the invention in side view;
- Fig. 2
- Supervision of the device;
- Fig. 3a
- perspective view of part of the treatment tool;
- Fig. 3b
- Side view with respect to Fig. 3a;
- Fig. 4
- Partial view of a further embodiment of a treatment tool;
- Fig. 5
- the variant of Figure 4 in engagement with other treatment tools.
- Fig. 6
- Side view of a variant, cut;
- Fig. 7
- Section through a treatment machine that contains the device.
Fig. 1 zeigt zwei relativ zueinander bewegbare komplementäre Behandlungswerkzeuge 1 und 2, die miteinander so im Eingriff stehen, daß sie zusammenwirken können. Zum Beispiel kann das Behandlungswerkzeug 1 zu einem Rotor und das Behandlungswerkzeug 2 zu einem Stator gehören. Dabei wird also im hier dargestellten Falle das Behandlungswerkzeug, in Strömungsrichtung gesehen, radial außen mit einem Stator abgeschlossen. Es ist ohne weiteres vorstellbar, daß der radial letzte Ring ein Rotorring ist, wodurch z.B. der Stoff aus dem Behandlungsapparat ausgeschleudert würde. Die gewählte Darstellung in Form eines Schnitts in Seitenansicht läßt erkennen, daß sich radial von innen nach außen die zu verschiedenen Behandlungswerkzeugen gehörenden Zähne 3, 4, 3', 4'' abwechseln. Deren Höhe ist als H bzw. H' angegeben. Die Richtung der Stoffströmung, radial von innen nach außen, wird durch den Pfeil S angedeutet. Wie Fig. 2 zeigt, ist die Anordnung derart, daß ringförmig angeordnete Zähne jeweils eine Zahnreihe bilden und die Zahnreihe eines Behandlungswerkzeuges jeweils in den Leerraum 7 (Fig. 2) des komplementären Werkzeuges reicht. Dabei sind benachbarte Zähne derselben Zahnreihe durch Stege 8, 8' miteinander verbunden, wobei die Stege eine Höhe von H1 bzw. H1'aufweisen. Die zwischen Steg 8, 8'und dem Grundkörper des Behandlungswerkzeuges 1, 2 verbleibende Länge des Spaltes ist mit L bzw. L'angegeben.Fig. 1 shows two mutually movable
Die Fig. 2 zeigt eine erfindungsgemäß ausgeführte Vorrichtung in Ansicht von oben, wobei die Zähne teilweise geschnitten dargestellt sind. Nur ein Teil der an sich vorhandenen Zähne ist eingezeichnet. Man erkennt, daß die Zähne in Zahnreihen konzentrisch angeordnet sind. In den beiden radial äußeren Zahnreihen sind jeweils zwei benachbarte Zähne 3', 4'durch Stege miteinander verbunden. Es ist auch gut möglich, solche Stege 8 ringförmig auszubilden und dadurch gruppenweise eine größere Anzahl von Zähnen zu verbinden. Der Steg kann im Extremfall die Zähne einer ganzen Zahnreihe umfassen. Anzumerken ist, daß nicht notwendigerweise alle Zahnreihen mit Stegen versehen sein müssen. Besonders vorteilhaft ist diese Maßnahme an den radial außen liegenden Zahnreihen.2 shows a device designed according to the invention in a view from above, the teeth being shown partially cut. Only a part of the existing teeth is shown. It can be seen that the teeth are arranged concentrically in rows of teeth. In the two radially outer rows of teeth, two adjacent teeth 3 ', 4' are connected to one another by webs. It is also well possible to form
Zur besseren Verdeutlichung der Vorrichtung ist ein Ausführungsbeispiel in Fig. 3 perspektivisch gezeichnet. Das nur teilweise dargestellte Behandlungswerkzeug 1 enthält eine ringförmige Zahnreihe mit Zähnen 3, die durch den Steg 8 miteinander verbunden sind. Dabei liegt der Steg an den Spitzen der Zähne. Das muß aber nicht in allen Fällen so sein. So könnte der Steg durchaus auch die Zähne an anderen Stellen verbinden und sie so mechanisch stabilisieren. Ein solches Beispiel zeigen die Figuren 4 und 5. Das mit dem hier dargestellten Behandlungswerkzeug 1 zusammenarbeitende Behandlungswerkzeug 2 kann prinzipiell ähnlich aufgebaut sein. Die in Fig. 5 gezeigte Seitenansicht, schematisch im Schnitt, zeigt zwei Behandlungswerkzeuge 1 und 2, die sich so im Eingriff befinden, daß eine bestimmungsgemäße Benutzung der Bearbeitungsvorrichtung möglich ist. Wie hier exemplarisch dargestellt, kann man die Stege so legen, daß sie bei komplementären Behandlungswerkzeugen radial im selben Bereich liegen, so daß die meist unerwünschte Abdeckwirkung für den durchtretenden Stoffstrom minimal ist. Lage und Form solcher Stege sind festigkeitsmäßig und behandlungstechnologisch zu optimieren.For a better illustration of the device, an embodiment is shown in perspective in FIG. 3. The
Fig. 6 zeigt eine Variante, bei der sich die Stege 8 und 8' nicht über die gesamte Breite B bzw. B' erstrecken. Dadurch können die Bearbeitungskanten über die gesamte Höhe H bzw. H' der Zähne verlaufen, also länger sein, was in vielen Fällen von Vorteil bei der Stoffbehandlung ist.6 shows a variant in which the
Fig. 7 zeigt eine Behandlungsmaschine, in die zwei Behandlungswerkzeuge 1, 2 eingesetzt. sind. Ein Gehäuse 11 umgibt diese im wesentlichen und weist eine Zufuhröffnung 12 und eine Abfuhröffnung 13 auf, durch die der Faserstoff zu- bzw. abzuführen ist. An der Zufuhröffnung 12 hat die Maschine eine Fördereinrichtung 14, welche den krümeligen Hochkonsistenzstoff zusammendrückt, so daß ein Pfropfen entsteht. Der Faserstoff wird zwischen den Behandlungswerkzeugen 1, 2 radial nach außen (Pfeil S) geführt und verläßt dann das Gehäuse 11 durch die Abfuhröffnung 13.7 shows a treatment machine in which two
Claims (18)
daß mindestens zwei benachbarte Zähne (3, 3', 4, 4') einer Zahnreihe jeweils so miteinander verbunden sind, daß zumindest ein Teil des sich zwischen ihnen befindenden Spaltes (5) einen geschlossenen, radial durchströmbaren Querschnitt bildet.Device for the mechanical treatment of highly consistent fibrous material, with at least two treatment tools (1, 2,) which can be moved relative to one another,
that at least two adjacent teeth (3, 3 ', 4, 4') of a row of teeth are each connected to one another in such a way that at least part of the gap (5) between them forms a closed, radially flowable cross section.
dadurch gekennzeichnet,
daß die Länge (L, L') des Spaltes (5), der den geschlossenen Querschnitt bildet, zwischen 40 und 150 mm beträgt.Device according to claim 1 or 2,
characterized,
that the length (L, L ') of the gap (5), which forms the closed cross section, is between 40 and 150 mm.
dadurch gekennzeichnet,
daß die in Umfangsrichtung gemessene Breite der Spalte zwischen 5 und 30 mm liegt.Device according to claim 1 or 2,
characterized,
that the circumferential width of the column is between 5 and 30 mm.
dadurch gekennzeichnet,
daß die Länge (L, L') des Spaltes (5), der den geschlossenen Querschnitt bildet, mindestens das Sechsfache seiner in Umfangsrichtung gemessenen Breite ist.Device according to claim 1, 2 or 3,
characterized,
that the length (L, L ') of the gap (5) which forms the closed cross section is at least six times its width measured in the circumferential direction.
dadurch gekennzeichnet,
daß die Verbindung durch Stege (8, 8') hergestellt wird, die mit den Spitzen der Zähne (3, 3', 4, 4') starr verbunden sind.Device according to one of the preceding claims,
characterized,
that the connection is made by webs (8, 8 ') which are rigidly connected to the tips of the teeth (3, 3', 4, 4 ').
dadurch gekennzeichnet,
daß die Verbindung durch Stege (8, 8') hergestellt wird, die so zwischen den Zähnen angeordnet sind, daß der dazwischenliegende Spalt (5) geteilt wird, wobei er zum Zahnfuß hin eine untere Länge (L1) und zur Zahnspitze hin eine obere Länge (L2) bildet.Device according to one of the preceding claims,
characterized,
that the connection is made by webs (8, 8 ') which are arranged between the teeth in such a way that the gap (5) between them is divided, a lower length (L1) towards the tooth base and an upper length towards the tooth tip (L2) forms.
dadurch gekennzeichnet,
daß die untere Länge (L1) etwa gleich der oberen Länge (L2) ist.Apparatus according to claim 6,
characterized,
that the lower length (L1) is approximately equal to the upper length (L2).
dadurch gekennzeichnet,
daß die Stege (8, 8') eine Höhe (H1, H1') zwischen 4 und 20 mm haben.Device according to one of the preceding claims,
characterized,
that the webs (8, 8 ') have a height (H1, H1') between 4 and 20 mm.
dadurch gekennzeichnet,
daß der rotationssymmetrische Grundkörper mehrere radial zueinander angeordnete konzentrische Zahnreihen enthält und zwei benachbarte, relativ zueinander bewegbare Behandlungswerkzeuge axial nebeneinander angeordnet sind.Device according to one of the preceding claims,
characterized,
that the rotationally symmetrical base body contains a plurality of radially arranged concentric rows of teeth and two adjacent, relatively movable treatment tools are arranged axially next to each other.
dadurch gekennzeichnet,
daß bei benachbarten Zahnreihen unterschiedlicher Behandlungswerkzeuge (2, 3) die Stege 8, 8'), radial betrachtet, hintereinander angeordnet sind.Apparatus according to claim 6 and 9 or 7 and 9,
characterized,
that in the case of adjacent rows of teeth of different treatment tools (2, 3), the webs 8, 8 '), viewed radially, are arranged one behind the other.
dadurch gekennzeichnet,
daß benachbarte Zähne (3, 3', 4, 4') einer Zahnreihe durch maximal einen Steg (8, 8') miteinander verbunden sind.Device according to one of the preceding claims,
characterized,
that adjacent teeth (3, 3 ', 4, 4') of a row of teeth are connected to each other by a maximum of one web (8, 8 ').
dadurch gekennzeichnet,
daß die Breite der Stege (8, 8'), in radialer Richtung gesehen, nur einen Teil der Breite B, B') der Zähne beträgt.Device according to one of the preceding claims,
characterized,
that the width of the webs (8, 8 '), seen in the radial direction, is only a part of the width B, B') of the teeth.
dadurch gekennzeichnet,
daß das Behandlungswerkzeug aus einzelnen Kreis- oder Ringsegmenten zusammengesetzt ist.Device according to one of the claims,
characterized,
that the treatment tool is composed of individual circular or ring segments.
dadurch gekennzeichnet,
daß die Behandlungswerkzeuge in einem Guß- oder Spritzverfahren hergestellt sind.Device according to one of the preceding claims,
characterized,
that the treatment tools are made in a casting or spraying process.
dadurch gekennzeichnet,
daß der rotationssymmetrische Grundkörper mehrere radial zueinander angeordnete konzentrische Zahnreihen enthält und zwei benachbarte, relativ zueinander bewegbare Behandlungswerkzeuge axial nebeneinander angeordnet sind.Device according to one of the preceding claims,
characterized,
that the rotationally symmetrical base body contains a plurality of radially arranged concentric rows of teeth and two adjacent, relatively movable treatment tools are arranged axially next to each other.
dadurch gekennzeichnet,
daß die Behandlungsmaschine ein Gehäuse (11) mit mindestens einer Zufuhröffnung (12) und mindestens einer Abfuhröffnung (13) aufweist, welches die Behandlungswerkzeuge (1, 2) im wesentlichen umgibt, wobei die Behandlungsmaschine an der Zufuhröffnung (12) mit einer pfropfenbildenden Fördereinrichtung (14) zur Zufuhr des zu behandelnden hochkonsistenten Faserstoffes versehen ist, mit der bei Betrieb der Maschine der Faserstoff zwischen die relativ zueinander bewegbaren Behandlungswerkzeuge (1, 2) geführt wird.Treatment machine which contains a device for mechanical treatment according to one of the preceding claims,
characterized,
that the treatment machine has a housing (11) with at least one feed opening (12) and at least one discharge opening (13) which essentially surrounds the treatment tools (1, 2), the treatment machine at the feed opening (12) having a plug-forming conveyor device ( 14) is provided for supplying the highly consistent fibrous material to be treated, with which the fibrous material is guided between the treatment tools (1, 2) which can be moved relative to one another when the machine is operating.
dadurch gekennzeichnet,
daß die Abfuhröffnung (13) ein Fallschacht für den behandelten hochkonsistenten Faserstoff ist.Treatment machine according to claim 16,
characterized,
that the discharge opening (13) is a chute for the treated, highly consistent fibrous material.
dadurch gekennzeichnet,
daß stromabwärts der Behandlungswerkzeuge (1, 2) Vorrichtungen zur Zugabe von Verdünnungswasser für den behandelten hochkonsistenen Faserstoff vorhanden sind.Treatment machine according to claim 16 or 17,
characterized,
that downstream of the treatment tools (1, 2) there are devices for adding dilution water for the treated, high-consistency pulp.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19541891A DE19541891A1 (en) | 1995-11-10 | 1995-11-10 | Device for the treatment of highly consistent fiber |
DE19541891 | 1995-11-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0773316A1 true EP0773316A1 (en) | 1997-05-14 |
EP0773316B1 EP0773316B1 (en) | 2001-03-07 |
Family
ID=7777094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96115698A Expired - Lifetime EP0773316B1 (en) | 1995-11-10 | 1996-10-01 | Device for treating high consistency pulp |
Country Status (5)
Country | Link |
---|---|
US (1) | US5904308A (en) |
EP (1) | EP0773316B1 (en) |
AT (1) | ATE199577T1 (en) |
CA (1) | CA2189901A1 (en) |
DE (2) | DE19541891A1 (en) |
Cited By (2)
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EP0931584A1 (en) * | 1998-01-22 | 1999-07-28 | Voith Sulzer Papiertechnik Patent GmbH | Apparatus for the mechanical handling of high consistency fibrous material |
WO2009097963A2 (en) * | 2008-02-07 | 2009-08-13 | Voith Patent Gmbh | Device for treating fibrous material for the manufacture of paper or cardboard |
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FI105112B (en) * | 1997-01-03 | 2000-06-15 | Megatrex Oy | Method and apparatus for defibrating fibrous material |
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DE202004012365U1 (en) * | 2004-08-06 | 2005-12-15 | Voith Paper Patent Gmbh | Papermaking suspension feed speck removal rotor is fabricated by a metal casting process |
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RU2683528C1 (en) * | 2018-03-19 | 2019-03-28 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Томский государственный университет систем управления и радиоэлектроники" (ТУСУР) | Dismembrator |
RU2691585C1 (en) * | 2018-10-01 | 2019-06-14 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Томский государственный университет систем управления и радиоэлектроники" (ТУСУР) | Disintegrator |
RU2691564C1 (en) * | 2018-10-01 | 2019-06-14 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Томский государственный университет систем управления и радиоэлектроники" (ТУСУР) | Method for disintegration of lump raw material |
US11208763B2 (en) * | 2018-10-29 | 2021-12-28 | Andritz Inc. | Supported toothed plates in a disperser |
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RU2726897C1 (en) * | 2020-02-25 | 2020-07-16 | федеральное государственное бюджетное образовательное учреждение высшего образования «Томский государственный университет систем управления и радиоэлектроники» | Method for disintegration of lump raw material |
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- 1995-11-10 DE DE19541891A patent/DE19541891A1/en not_active Withdrawn
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- 1996-10-01 EP EP96115698A patent/EP0773316B1/en not_active Expired - Lifetime
- 1996-10-01 AT AT96115698T patent/ATE199577T1/en not_active IP Right Cessation
- 1996-10-01 DE DE59606543T patent/DE59606543D1/en not_active Expired - Fee Related
- 1996-11-08 CA CA002189901A patent/CA2189901A1/en not_active Abandoned
- 1996-11-12 US US08/747,494 patent/US5904308A/en not_active Expired - Fee Related
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US2627394A (en) * | 1951-10-04 | 1953-02-03 | Firestone Tire & Rubber Co | Rubber foam mixer |
US3194540A (en) * | 1961-07-28 | 1965-07-13 | Liberty Nat Bank And Trust Com | Homogenizing apparatus |
US3195867A (en) * | 1962-01-23 | 1965-07-20 | Liberty Nat Bank And Trust Com | Homogenizing apparatus |
DE2826553A1 (en) * | 1978-06-16 | 1980-01-03 | Sp Kt Bjuro Dezintegrator | Grain mill rotor assembly - has counter rotating discs with inner set of radial crushing elements followed by set of lug and collar combination |
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EP0931584A1 (en) * | 1998-01-22 | 1999-07-28 | Voith Sulzer Papiertechnik Patent GmbH | Apparatus for the mechanical handling of high consistency fibrous material |
WO2009097963A2 (en) * | 2008-02-07 | 2009-08-13 | Voith Patent Gmbh | Device for treating fibrous material for the manufacture of paper or cardboard |
WO2009097963A3 (en) * | 2008-02-07 | 2009-10-01 | Voith Patent Gmbh | Device for treating fibrous material for the manufacture of paper or cardboard |
Also Published As
Publication number | Publication date |
---|---|
DE19541891A1 (en) | 1997-05-22 |
EP0773316B1 (en) | 2001-03-07 |
CA2189901A1 (en) | 1997-05-11 |
US5904308A (en) | 1999-05-18 |
ATE199577T1 (en) | 2001-03-15 |
DE59606543D1 (en) | 2001-04-12 |
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