EP0731210B1 - Refiner and refining tool for refining suspended fibre material - Google Patents
Refiner and refining tool for refining suspended fibre material Download PDFInfo
- Publication number
- EP0731210B1 EP0731210B1 EP96102493A EP96102493A EP0731210B1 EP 0731210 B1 EP0731210 B1 EP 0731210B1 EP 96102493 A EP96102493 A EP 96102493A EP 96102493 A EP96102493 A EP 96102493A EP 0731210 B1 EP0731210 B1 EP 0731210B1
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- EP
- European Patent Office
- Prior art keywords
- milling
- strip
- milling tool
- shaped elevations
- fibrous material
- 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.)
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-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/20—Methods of refining
- D21D1/22—Jordans
-
- 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
Definitions
- the invention relates to devices for grinding suspended Fibrous material according to the preamble of claim 1 or 5.
- Grinding tools of the type mentioned are often also called sets and in Grinding machines - so-called refiners - installed.
- Such grinders have at least one rotor and at least one stator with either disk ring or frustoconical surfaces on which the grinding tools or fittings are attached be so that grinding gaps can form between them.
- the ones considered here Grinding tools have webs and grooves on the work surfaces, which is why one of "Knife trimmings" speaks.
- An annular grinding surface is used in technical Practice often generated by having a number of the same ring segments is assembled until there is a full circumference with one for all segments common center results.
- a grinding tool provided for the grinding of wood pulp is in the DE-OS 25 22 349 shown. It is a knife set with a special inner Ring section that serves to break up the incoming wood pulp, not the one the intended change in the fibers themselves during grinding DE-OS 26 09 727 shown refiner is primarily on the Requirements matched with mechanical wood pulp. thats why an internal "refine zone" in front of the actual grinding zone, in which the Fiber material is broken down almost to the individual fiber. The actual grinding of the Fibers only then take place in the radially outer grinding zone. Yet leads further towards the division of the processing zones within a machine US 5,200,038, in which two rotors provided with different drives very special grinding tools are provided. Again, the incoming substance (Pulp) first of all fed to a pre-zone, which here only acts as a fluidization zone.
- the invention thus creates grinding devices in which the energy used can be better used for grinding the fibrous material. It has shown that it is not only the increase in grinding degree that can be achieved more economically, but that with the grinding also a relatively good preservation of the fiber lengths and Fiber strength is possible.
- the effect as is already the case indicated that one can always start from the grinding developments that have been achieved so far, which is why it does not make sense to generally specify a fixed numerical value here.
- studies on the subject of the invention show a significant one Reduce the energy required without sacrificing fiber quality would have to be accepted.
- a major innovation compared to the prior art is one improved flow guidance in the operation of the grinder from the Fibrous suspension flowed through the gap between the rotor and stator.
- the fibers are changed by strong forces, with only a very small distance between the Worktops is set. Because there are several on the work surface so defined Strips, one behind the other, viewed in the direction of the channels, are each one Have a distance of at least 8 mm, there arise several according to the invention Intermediate zones, in which the coming from the grinding area in front, ie already ground suspension added and then the following Grinding area can be supplied.
- Such an intermediate zone probably has one double benefit as it is both the desirable partial return of the already ground suspension in the grinding area in front of it as well Uniformity of the flow in the subsequent grinding area promotes. Thereby the grinding result can be improved, in particular the grinding can be more uniform.
- Such intermediate zones can be created by grooves which e.g. are circular. Polygon-shaped grooves are also particularly advantageous, as through these the sometimes somewhat critical wear of grinding tools in the groove area is reduced.
- a special strip-free area can also be created be, which the suspension first flows through before it enters the grinding area of the considered grinding machine or the grinding tool comes. So before or at that Entry of the suspension into the knife area of the grinding device a rotation zone provided that borders on a rotating surface, but in which at least there are no webs on one side. There is none in this annular zone Grinding instead. A possible reason for the further improvement of profitability could even out the suspension flow when entering the Be a grinding zone.
- the said annular zone can be designed by the actual Grinder are formed or according to claim 9 in the radially inner zone of the Grinding tools themselves.
- Fig. 1 shows the subject of the invention in the form of a disc refiner.
- the rotor and stator are used as a grinding tool holder.
- the suspended fibrous material can over the Inlet opening 5 and the outlet opening 6 are removed.
- the rotor 2 is axially fixed, while the stator 3 axially relative to Rotor 2 is movable, being prevented from rotating by bolts 15.
- the Rotor 2 has a working surface 7 and stator 3 a complementary one Work surface 8.
- a grinding gap 9 is formed between the two work surfaces. The latter is exaggerated here and in the other figures.
- the illustration is chosen so that the strip-shaped elevations 10 and 11 cut in the upper part and in the lower part are drawn uncut. It can be seen that on both sides of the grinding gap 9 three strip-shaped elevations 10 and 11 each arranged radially one behind the other, i.e. are interrupted by grooves 16. They also extend here on the Stator side less far inwards than on rotor 2.
- FIG. 2 shows a section of the subject matter of the invention from FIG. 1 with one part of the stator 3.
- the free dimensions a 'and a' 'between the strip-shaped elevations 11 are recognizable as well as the clearance a, around which the base 14 of the grinding tool extends radially further inward than the elevation 11.
- the elevation has that Height c above the base 14.
- Fig. 3 shows schematically a diagram which shows the grinding development M in Dependence on the grinding energy E.
- the Grinding development according to curve A2 while using the invention a faster Grinding development, curve A1, can be achieved.
- FIGS. 4, 4 or 5 are further embodiments based on a disc refiner basically outlined.
- the interruptions of the strips by grooves can namely be on the stator side (FIG. 4), on the rotor side (FIG. 5) or — as already in FIG. 1 shown - on both sides.
- 6 differs from that of Fig. 2 in that not only the actual bar 11, but also that on the stator 3 mounted grinding tool itself has interruptions due to grooves. Of course 6 can also apply to the other combinations according to FIGS. 1, 4 or 5 can be applied.
- FIG. 7 outlines a cone refiner in which the on the working surface of the rotor 2 lying elevations 10 are interrupted by grooves.
- the stator 3 can have elevations 11 with interruptions.
- Fig. 8 shows a top view of a typical one found on disc refiners Work surface with a large number of elevations 10, which are designed differently here with width b and the channel-like grooves 12 lying therebetween. Furthermore, there are grooves 16, namely ring grooves, with the dimensions a ', a' '.
- the surveys 10 are also shorter by the internal dimension a than the base area 13. These Representation is to be understood as part / segment of the entire circumference.
- the complementary work surface has mostly the same with regard to the surveys Pattern, whereby for the existence of the free dimensions a, a ', a' 'this is already in Connection with Fig. 1 and 4-6 said applies.
- the complementary work surface can but can also be designed very differently, e.g. have different knife angles, flat porous be or have a pimple or lace pattern.
- the grinding tool according to FIG. 9 is similar to that of FIG. 8, but has two polygenic recesses 17, which results in three grinding areas 18, 18 'and 18''lying one behind the other. Here only one of the segments of 45 o is drawn, from which an annular set can be assembled.
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- Polishing Bodies And Polishing Tools (AREA)
- Crushing And Grinding (AREA)
- Paper (AREA)
Abstract
Description
Die Erfindung bezieht sich auf Vorrichtungen zum Mahlen von suspendiertem
Faserstoffmaterial gemäß dem Oberbegriff des Anspruchs 1 oder 5.The invention relates to devices for grinding suspended
Fibrous material according to the preamble of
Mahlwerkzeuge der genannten Art werden oft auch Garnituren genannt und in Mahlmaschinen - sogenannte Refiner - eingebaut. Solche Mahlmaschinen haben mindestens einen Rotor und mindestens einen Stator mit entweder scheibenring- oder kegelstumpfförmigen Flächen, auf denen die Mahlwerkzeuge oder Garnituren angebracht werden, so daß sich zwischen ihnen Mahlspalten ausbilden können. Die hier betrachteten Mahlwerkzeuge weisen an den Arbeitsflächen Stege und Nuten auf, weshalb man auch von "Messer-Garnituren" spricht. Eine ringförmige Mahlfläche wird in der technischen Praxis oft dadurch erzeugt, daß eine Anzahl von gleichen Ringsegmenten zusammengesetzt wird, bis sich ein voller Kreisumfang mit einem für alle Segmente gemeinsamen Mittelpunkt ergibt.Grinding tools of the type mentioned are often also called sets and in Grinding machines - so-called refiners - installed. Such grinders have at least one rotor and at least one stator with either disk ring or frustoconical surfaces on which the grinding tools or fittings are attached be so that grinding gaps can form between them. The ones considered here Grinding tools have webs and grooves on the work surfaces, which is why one of "Knife trimmings" speaks. An annular grinding surface is used in technical Practice often generated by having a number of the same ring segments is assembled until there is a full circumference with one for all segments common center results.
Ein beträchtlicher Teil der Betriebskosten, die bei der Mahlung von Faserstoffen in der Zellstoff- und Papierindustrie anfallen, rührt von den Energiekosten her. Daher war es schon immer ein Bestreben, derartige Vorrichtungen so zu bauen und zu betreiben, daß - gemessen an dem gewünschten Erfolg - ein nicht zu hoher Energieeinsatz gebraucht wird. Da die Zielsetzungen der Faserstoffbehandlung je nach Anwendungsfall unterschiedlich sind, ist auch die Beurteilung des Mahleffektes unterschiedlich. In vielen Fällen wird die eingesetzte Energie auf den Mahlerfolg so bezogen, daß entweder die Größe pro Tonne Faserstoff und Mahlgradsteigerung oder kWh/pro Tonne Faserstoff und Festigkeitssteigerung angegeben wird. Die Vergleichbarkeit solcher Werte setzt aber ansonsten gleiche Bedingungen voraus. Insbesondere ist es nicht möglich, die Mahlkosten dadurch zu senken, daß zwar weniger Energie eingesetzt wird, andererseits aber trotz ausreichender Mahlgradsteigerung der so behandelte Faserstoff den Qualitätserfordernissen nicht mehr entspricht.A significant portion of the operating costs involved in pulping in the pulp The pulp and paper industry arises from energy costs. So it was has always been an effort to build and operate such devices that - measured by the desired success - a not too high energy input needed becomes. Because the objectives of fiber treatment depend on the application are different, the assessment of the grinding effect is also different. In In many cases, the energy used is related to the grinding success so that either the size per ton of pulp and increase in grinding degree or kWh / per ton of pulp and increase in strength is specified. The comparability of such values sets but otherwise equal conditions ahead. In particular, it is not possible to Reduce grinding costs by using less energy, on the other hand but despite a sufficient increase in the degree of grinding, the fiber treated in this way Quality requirements no longer met.
Ein für die Mahlung von Holzstoff vorgesehenes Mahlwerkzeug ist in der DE-OS 25 22 349 dargestellt. Es ist eine Messergarnitur mit einer speziellen inneren Ringsektion, die dem Aufbrechen des zufließenden Holzschliffes dient, also nicht der beim Mahlen beabsichtigten Veränderung der Fasern selbst. Auch die in der DE-OS 26 09 727 gezeigte Refinereinrichtung ist in erster Linie auf die Anforderungen abgestimmt, die bei mechanischem Holzstoff gestellt werden. Daher ist der eigentlichen Mahlzone eine innenliegende "Refine-Zone" vorgelagert, in der das Fasermaterial nahezu bis zur Einzelfaser zerlegt wird. Die eigentliche Mahlung der Fasern findet erst anschließend in der radial außenliegenden Mahlzone statt. Noch weiter in Richtung Aufteilung der Bearbeitungszonen innerhalb einer Maschine führt die US 5,200,038, bei der zwei mit verschiedenen Antrieben versehene Rotoren mit ganz speziellen Mahlwerkzeugen versehen sind. Wiederum wird der einlaufende Stoff (Pulp) zunächst einer Vorzone, die hier nur als Fluidisierungszone wirkt, zugeleitet.A grinding tool provided for the grinding of wood pulp is in the DE-OS 25 22 349 shown. It is a knife set with a special inner Ring section that serves to break up the incoming wood pulp, not the one the intended change in the fibers themselves during grinding DE-OS 26 09 727 shown refiner is primarily on the Requirements matched with mechanical wood pulp. thats why an internal "refine zone" in front of the actual grinding zone, in which the Fiber material is broken down almost to the individual fiber. The actual grinding of the Fibers only then take place in the radially outer grinding zone. Yet leads further towards the division of the processing zones within a machine US 5,200,038, in which two rotors provided with different drives very special grinding tools are provided. Again, the incoming substance (Pulp) first of all fed to a pre-zone, which here only acts as a fluidization zone.
Trotz dieser Bemühungen um eine Verbesserung der Mahlmaschinen für Papierfaserstoff ist es nach wie vor Wunsch, die erforderliche Mahlenergie noch weiter zu reduzieren.Despite these efforts to improve the grinders for Paper pulp still wishes to increase the grinding energy required to reduce.
Es ist daher Aufgabe der Erfindung, Vorrichtungen der angegebenen Art zu schaffen, mit denen die zur Mahlung eingesetzte Energie für einen angestrebten Mahlerfolg geringer ist als bisher.It is therefore an object of the invention to provide devices of the type specified with to whom the energy used for grinding is less for a desired grinding success is than before.
Diese Aufgabe wird durch die Kennzeichen der Ansprüche 1 oder 5 gelöst. Die
nachfolgenden Unteransprüche beschreiben besonders vorteilhafte Ausgestaltungen.This object is achieved by the features of
Durch die Erfindung werden somit Mahlvorrichtungen geschaffen, bei denen die eingesetzte Energie besser zur Mahlung des Faserstoffmaterials genützt werden kann. Es hat sich gezeigt, daß nicht nur der Mahlgradanstieg wirtschaftlicher zu erzielen ist, sondern daß mit der Mahlung auch eine relativ gute Erhaltung der Faserlängen und Faserfestigkeiten möglich ist. Bei der Beurteilung des Effektes wird, wie bereits angedeutet, immer von den bisher erzielbaren Mahlentwicklungen auszugehen sein, weshalb es nicht sinnvoll ist, hier allgemein einen festen Zahlenwert vorzugeben. Die Untersuchungen an dem Erfindungsgegenstand weisen jedenfalls eine signifikante Verringerung der erforderlichen Energie aus, ohne daß Einbußen an der Faserqualität hingenommen werden müßten.The invention thus creates grinding devices in which the energy used can be better used for grinding the fibrous material. It has shown that it is not only the increase in grinding degree that can be achieved more economically, but that with the grinding also a relatively good preservation of the fiber lengths and Fiber strength is possible. When assessing the effect, as is already the case indicated that one can always start from the grinding developments that have been achieved so far, which is why it does not make sense to generally specify a fixed numerical value here. The In any case, studies on the subject of the invention show a significant one Reduce the energy required without sacrificing fiber quality would have to be accepted.
Eine wesentliche Neuerung im Vergleich zum Stand der Technik liegt in einer verbesserten Strömungsführung im während des Betriebes der Mahlvorrichtung von der Faserstoffsuspension durchströmten Spalt zwischen Rotor und Stator. Im Bereich der Arbeitsfläche von Rotor bzw. Stator werden die Fasern durch starke Kräfte verändert, wobei während des Mahlvorganges ein nur sehr geringer Abstand zwischen den Arbeitsflächen eingestellt wird. Da sich auf der so definierten Arbeitsfläche mehrere Leisten hintereinander, in Richtung der Kanäle betrachtet, befinden, die jeweils einen Abstand von mindestens 8 mm haben, enstehen dort erfindungsgemäß mehrere Zwischenzonen, in denen die aus dem davorliegenden Mahlbereich stammende, also bereits gemahlene Suspension aufgenommen und anschließend dem nachfolgenden Mahlbereich zugeführt werden kann. Vermutlich hat eine solche Zwischenzone einen doppelten Nutzen, da sie sowohl die wünschenswerte Teil-Rückführung der schon gemahlenen Suspension in den davorliegenden Mahlbereich als auch die Vergleichmäßigung der Strömung in den nachfolgenden Mahlbereich fördert. Dadurch kann das Mahlergebnis verbessert, insbesondere die Mahlung gleichmäßiger werden. Solche Zwischenzonen können durch Nuten erzeugt werden, die z.B. ringförmig sind. Besonders vorteilhaft sind auch polygonzugförmige Nuten, da durch diese der manchmal etwas kritische Verschleiß von Mahlwerkzeugen im Nutenbereich reduziert wird.A major innovation compared to the prior art is one improved flow guidance in the operation of the grinder from the Fibrous suspension flowed through the gap between the rotor and stator. In the field of Working surface of the rotor or stator, the fibers are changed by strong forces, with only a very small distance between the Worktops is set. Because there are several on the work surface so defined Strips, one behind the other, viewed in the direction of the channels, are each one Have a distance of at least 8 mm, there arise several according to the invention Intermediate zones, in which the coming from the grinding area in front, ie already ground suspension added and then the following Grinding area can be supplied. Such an intermediate zone probably has one double benefit as it is both the desirable partial return of the already ground suspension in the grinding area in front of it as well Uniformity of the flow in the subsequent grinding area promotes. Thereby the grinding result can be improved, in particular the grinding can be more uniform. Such intermediate zones can be created by grooves which e.g. are circular. Polygon-shaped grooves are also particularly advantageous, as through these the sometimes somewhat critical wear of grinding tools in the groove area is reduced.
In besonderen Fällen kann zusätzlich ein spezieller leistenfreier Bereich geschaffen werden, den die Suspension zunächst durchströmt, bevor sie in den Mahlbereich der betrachteten Mahlmaschine bzw. des Mahlwerkzeuges kommt. So wird vor oder bei dem Eintritt der Suspension in den Messerbereich der Mahlvorrichtung eine Rotationszone zur Verfügung gestellt, die an eine rotierende Fläche grenzt, in der aber auf wenigstens einer Seite keine Stege vorhanden sind. In dieser ringförmigen Zone findet keine Mahlung statt. Ein möglicher Grund für die weitere Verbesserung der Wirtschaftlichkeit könnte die Vergleichmäßigung der Suspensionsströmung bereits beim Einlauf in die Mahlzone sein. Die genannte ringförmige Zone kann durch Ausgestaltung der eigentlichen Mahlmaschine gebildet werden oder gemäß Anspruch 9 in der radial inneren Zone der Mahlwerkzeuge selbst.In special cases, a special strip-free area can also be created be, which the suspension first flows through before it enters the grinding area of the considered grinding machine or the grinding tool comes. So before or at that Entry of the suspension into the knife area of the grinding device a rotation zone provided that borders on a rotating surface, but in which at least there are no webs on one side. There is none in this annular zone Grinding instead. A possible reason for the further improvement of profitability could even out the suspension flow when entering the Be a grinding zone. The said annular zone can be designed by the actual Grinder are formed or according to claim 9 in the radially inner zone of the Grinding tools themselves.
Die Erfindung wird beschrieben und erläutert anhand von schematischen Zeichnungen. Dabei zeigen:
- Fig. 1
- geschnittene Seitenansicht eines erfindungsgemäß ausgeführten Scheibenrefiners;
- Fig. 2
- Ausschnitt von Fig. 2;
- Fig. 3
- Diagramm der Mahlentwicklung;
- Fig. 4 bis 6
- weitere Ausführungsformen der Mahlwerkzeuge;
- Fig. 7
- einen erfindungsgemäßen Kegelrefiner;
- Fig. 8
- Aufsicht (Segment) auf ein erfindungsgemäßes Mahlwerkzeug;
- Fig. 9
- Aufsicht (Segment) auf ein weiteres erfindungsgemäßes Mahlwerkzeug.
- Fig. 1
- sectional side view of a disc refiner designed according to the invention;
- Fig. 2
- Section of Fig. 2;
- Fig. 3
- Diagram of grinding development;
- 4 to 6
- further embodiments of the grinding tools;
- Fig. 7
- a cone refiner according to the invention;
- Fig. 8
- Top view (segment) of a grinding tool according to the invention;
- Fig. 9
- Top view (segment) of a further grinding tool according to the invention.
Fig. 1 zeigt den Erfindungsgegenstand in Form eines Scheibenrefiners. Man erkennt
einen Teil des Gehäuses 1, den Rotor 2 und den Stator 3. Dabei dienen Rotor und Stator
als Mahlwerkzeugträger. Das suspendierte Faserstoffmaterial kann über die
Eintrittsöffnung 5 zu- und die Austrittsöffnung 6 abgeführt werden. In der hier
gezeichneten Form ist der Rotor 2 axial fixiert, während der Stator 3 axial relativ zum
Rotor 2 beweglich ist, wobei er durch Bolzen 15 am Mitdrehen gehindert wird. Der
Rotor 2 weist eine Arbeitsfläche 7 und der Stator 3 eine komplementäre weitere
Arbeitsfläche 8 auf. Zwischen beiden Arbeitsflächen bildet sich ein Mahlspalt 9.
Letzterer ist hier und in den weiteren Figuren übertrieben breit gezeichnet. Im Bereich
der Arbeitsflächen 7, 8 befinden sich leistenförmige Erhebungen 10 am Rotor 2 und
leistenförmige Erhebungen 11 am Stator 3. Die Darstellung ist hier so gewählt, daß die
leistenförmigen Erhebungen 10 bzw. 11 im oberen Teil geschnitten und im unteren Teil
ungeschnitten gezeichnet sind. Man erkennt, daß auf beiden Seiten des Mahlspaltes 9
jeweils drei leistenförmige Erhebungen 10 und 11 radial hintereinander angeordnet,
d.h. durch Nuten 16 unterbrochen sind. Außerdem erstrecken sie sich hier auf der
Statorseite weniger weit nach innen als am Rotor 2.Fig. 1 shows the subject of the invention in the form of a disc refiner. One recognises
a part of the
In Fig. 2 ist ein Ausschnitt des Erfindungsgegenstandes aus Fig. 1 gezeigt mit einem Teil
des Stators 3. Die Freimaße a' und a'' zwischen den leistenförmigen Erhebungen 11 sind
erkennbar sowie das Freimaß a, um das sich die Grundfläche 14 des Mahlwerkzeuges
radial weiter nach innen erstreckt als die Erhebung 11. Die Erhebung hat das
Höhenmaß c über der Grundfläche 14.FIG. 2 shows a section of the subject matter of the invention from FIG. 1 with one part
of the
Fig. 3 zeigt schematisch ein Diagramm, welches die Mahlentwicklung M aufzeigt in Abhängigkeit von der eingesetzten Mahlenergie E. Im Stand der Technik verläuft die Mahlentwicklung gemäß Kurve A2, während mit Hilfe der Erfindung eine schnellere Mahlentwicklung, Kurve A1, erzielbar ist. Selbstverständlich hängen die qualitativen Werte sehr stark vom eingesetzten Stoff ab, und das Diagramm dient lediglich zur Verdeutlichung des erzielbaren Nutzens.Fig. 3 shows schematically a diagram which shows the grinding development M in Dependence on the grinding energy E. In the state of the art, the Grinding development according to curve A2, while using the invention a faster Grinding development, curve A1, can be achieved. Of course, the qualitative depend Deviate very strongly from the substance used, and the diagram is only for Clarification of the achievable benefits.
In den Fig. 4 und 5 sind weitere Ausführungsformen anhand eines Scheibenrefiners
grundsätzlich skizziert. Die Unterbrechungen der Leisten durch Nuten können nämlich
auf der Statorseite sein (Fig. 4), auf der Rotorseite (Fig. 5) oder - wie bereits in Fig. 1
gezeigt - auf beiden Seiten. Der Gegenstand auf Fig. 6 unterscheidet sich von dem der
Fig. 2 dadurch, daß nicht nur die eigentliche Leiste 11, sondern auch das auf dem Stator
3 montierte Mahlwerkzeug selbst Unterbrechungen durch Nuten hat. Selbstverständlich
kann das in Fig. 6 gezeigte Prinzip auch bei den anderen Kombinationen gemäß Fig. 1, 4
oder 5 angewendet werden.4 and 5 are further embodiments based on a disc refiner
basically outlined. The interruptions of the strips by grooves can namely
be on the stator side (FIG. 4), on the rotor side (FIG. 5) or — as already in FIG. 1
shown - on both sides. 6 differs from that of
Fig. 2 in that not only the
Auch wenn sicherlich die Anwendung der Erfindung auf mit Scheiben ausgerüsteten Mahlmaschinen oder auf die zugehörigen Mahlwerkzeuge besonders sinnvoll ist, können die Vorteile auch bei Kegelrefinern, insbesondere Steilkegelrefinern, erzielt werden. Even if the application of the invention to disks equipped with certainly Grinding machines or on the associated grinding tools is particularly useful the advantages can also be achieved with taper refiners, especially steep taper refiners.
Fig. 7 skizziert einen Kegelrefiner, bei dem die auf der Arbeitsfläche des Rotors 2
liegenden Erhebungen 10 durch Nuten unterbrochen sind. Anders als hier dargestellt,
kann in anderen Fällen auch der Stator 3 Erhebungen 11 mit Unterbrechungen haben.FIG. 7 outlines a cone refiner in which the on the working surface of the
Fig. 8 zeigt die Aufsicht auf eine typische, an Scheiben-Refinern anzutreffende
Arbeitsfläche mit einer Vielzahl von - hier verschieden ausgebildeten - Erhebungen 10
mit Breite b sowie den dazwischen liegenden kanalartigen Nuten 12. Ferner sind Nuten
16, und zwar Ringnuten, mit den Freimaßen a', a'' eingezeichnet. Die Erhebungen 10
sind hier außerdem um das Freimaß a innen kürzer als die Grundfläche 13. Diese
Darstellung ist als Teil/Segment des ganzen Kreisumfanges zu verstehen. Bekanntlich
hat die komplementäre Arbeitsfläche hinsichtlich der Erhebungen meistens das gleiche
Muster, wobei für das Vorhandensein der Freimaße a, a', a'' das bereits im
Zusammenhang mit Fig. 1 und 4-6 Gesagte gilt. Die komplementäre Arbeitsfläche kann
aber auch ganz anders gestaltet sein, z.B. andere Messerwinkel aufweisen, flächig porös
sein oder ein Noppen- oder Lochmuster-Muster haben.Fig. 8 shows a top view of a typical one found on disc refiners
Work surface with a large number of
Das Mahlwerkzeug gemäß Fig. 9 ähnelt dem der Fig.8, weist aber zwei polygenförmige
Aussparungen 17 auf, wodurch drei hintereinanderliegende Mahlbereiche 18, 18' und
18'' entstehen. Dabei ist hier nur eines der Segmente von 45 o gezeichnet, aus dem eine
kreisringförmige Garnitur zusammengesetzt werden kann.The grinding tool according to FIG. 9 is similar to that of FIG. 8, but has two
Claims (19)
- A milling machine for milling suspended fibrous material, in particular of paper and/or pulp fibres, consisting of a housing (1) with inlet- and outlet-openings (5, 6) for the fibrous material, with at least two milling tool carriers, in particular a drivable rotor (2) and a stator (3), suitable for the application of milling tools to provide at least one working surface (7) and one complementary further working surface (8) which are positioned with respect to each other forming a milling gap (9) through which the fibrous material is able to flow, with at least one working surface (7 or 8) having a plurality of strip-shaped elevations (10, 10', 10", 11), so-called blades between which channel-like grooves (12) are situated, so that the fibrous material can be directed at least partially through these from the interior outwards and a mechanical processing of the fibrous material can take place through the relative movement of two complemenary working surfaces (7 and 8),
characterised in that
on at least one side of the milling gap (9) at least three strip-shaped elevations (10, 10', 10", 11) of the working surface intended for fibre milling are arranged one behind the other, viewed in the direction of the channels and that, viewed in the direction of flow of the fibrous material, successive elevations (10, 10', 10", 11) have a spacing with a free measurement (a', a", a"') of at least 8 mm. - The milling machine according to Claim 1,
characterised in that
on at least one side of a milling gap (9) the strip-shaped elevations (10, 10', 10", 11), lying radially furthest on the inside, of the working surface (7, 8) intended for fibre milling extend by a free measurement (a) of at least 8 mm less far inwards than the associated milling tool carrier. - The milling machine according to Claim 1 or 2,
characterised in that
the milling tool carriers, which are complementary to each other, have substantially a disc-like shape. - The milling machine according to Claim 1 or 2,
characterised in that
the milling tool carriers, which are complementary to each other, have substantially a frustum-like shape. - A milling tool for milling suspended fibrous material, in particular paper and/or pulp fibres, in milling machines with substantially rotationally symmetrical milling tool carriers which are movable relative to each other and lie opposite each other, in particular on a rotor or on a stator on which milling tools are able to be arranged in pairs so that they form at least one pair of complementary working surfaces (7, 8) for the formation of a milling gap (9) through which the fibrous material is able to flow and with the working surface (8) at least of one milling tool having on its side respectively facing the fibrous material to be treated in operation having a plurality of strip-shaped elevations (10, 10', 10", 11), so-called blades, over its base surface (13, 14), between which channel-like grooves (12) are situated, so that the fibrous material can be directed at least partially through these grooves from the interior outwards and a mechanical processing of the fibrous material can take place through the relative movement of two complementary working surfaces (7, 8),
characterized in that at least three strip-shaped elevations (10, 10', 10", 11) of the working surface intended for fibre milling are arranged one behind the other, viewed in the direction of the channels, with successive elevations (10, 10', 10", 11), viewed in the direction of flow of the fibrous material, having a spacing with a free measurement (a', a", a"') of at least 8 mm. - The milling tool according to Claim 5,
characterised in that
the radial extent of the strip-shapd elevations (10, 10', 10", 11), separated by spacing with the free measurement (a', a", a"'), amounts to a maximum of 100 mm. - The milling tool according to Claim 6,
characterised in that
the radial extent of the strip-shaped elevations (10, 10', 10", 11), separated by spacing with the free measurement (a', a", a"'), amounts to a maximum of 60 mm. - The milling tool according to Claim 5, 6 or 7,
characterised in that
the radial extent of the strip-shaped elevations (10, 10', 10", 11), separated by spacing with the free measurement (a', a", a"'), amounts to a maximum of twenty times the width (b) of the elevations (10, 10', 10", 11). - The milling tool according to Claim 5,
characterised in that
the strip-shaped elevations (10, 10', 10", 11) of the working surface (7, 8) extend in a free measurement (a) of at least 8 mm less far inwards than the base surface (13, 14) of the milling tool extends. - The milling tool according to any of Claims 5 to 9,
characterised in that
the base area has substantially a shape like a circular ring or that of a segment of a circular ring. - The milling tool according to any of Claims 5 to 9,
characterised in that
the base areas have substantially a frustum-like shape. - The milling tool according to any of Claims 5 to 11,
characterised in that
the height of the strip-shaped elevations (10, 10', 10", 11) over the base area (13, 14) of the milling tool amounts to between 2 and 20 mm. - The milling tool according to Claim 12,
characterised in that
the height of the strip-shaped elevations (10, 10', 10", 11) over the base area (13, 14) of the milling tool amounts to between 2 and 8 mm. - The milling tool according to any of Claims 5 to 13,
characterised in that
the width (b) of the strip-shaped elevations (10, 10', 10", 11) of the working surface of the milling tool intended for fibre milling amounts to between 2 and 30 mm. - The milling tool according to any of Claims 5 to 14,
characterised in that
the width of the channel-like grooves (12) between the strip-shaped elevations (10, 10', 10", 11) of the working surface of the milling tool intended for fibre milling amounts to between 3 and 20 mm. - The milling tool according to Claim 10,
characterised in that
strip-shaped elevations (10, 10', 10", 11), lying one behind the other, of the working surface intended for fibre milling are separated by a groove (16) which runs substantially in the form of a cirular ring around the centre of the base surface or of the circle belonging to the segment and has approximately the same height as the strip-shaped elevations (10, 10', 10", 11). - The milling tool according to Claim 10,
characterised in that
strip-shaped elevations (10, 10', 10", 11), lying one behind the other, of the working surface intended for fibre milling are separated by a recess (17, 17') which runs substantially in the form of a polygon and symmetrically to the centre of the base area and has approximately the same height as the strip-shaped elevations (10, 10', 10", 11). - The milling tool according to Claim 11,
characterised in that
strip-shaped elevations (10, 10', 10", 11) lying one behind the other are separated by a recess which runs substantially in the form of a cirular ring and symmetrically around the central line of the frustum and has approximately the same height as the strip-shaped elevations (10, 10', 10", 11). - The device according to any of the preceding claims,
characterised in that
the free measurement (a, a', a", a"') respectively amounts to between 8 and 30 mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19508202A DE19508202A1 (en) | 1995-03-08 | 1995-03-08 | Grinding machine and grinding tool for grinding suspended fiber material |
| DE19508202 | 1995-03-08 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0731210A2 EP0731210A2 (en) | 1996-09-11 |
| EP0731210A3 EP0731210A3 (en) | 1998-06-10 |
| EP0731210B1 true EP0731210B1 (en) | 2001-04-04 |
Family
ID=7756022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96102493A Expired - Lifetime EP0731210B1 (en) | 1995-03-08 | 1996-02-20 | Refiner and refining tool for refining suspended fibre material |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5779168A (en) |
| EP (1) | EP0731210B1 (en) |
| AT (1) | ATE200321T1 (en) |
| DE (2) | DE19508202A1 (en) |
| FI (1) | FI961078A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2764997C1 (en) * | 2018-07-18 | 2022-01-24 | Михаэль ЙАРОЛИМ | Apparatus and method for processing fibres |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19754807C2 (en) * | 1997-12-10 | 1999-11-18 | Voith Sulzer Papiertech Patent | Process for the production of sets for the mechanical processing of suspended fibrous material and sets produced by the process |
| DE19923865A1 (en) | 1999-05-25 | 2000-11-30 | Voith Sulzer Papiertech Patent | Process for the production of sets for the mechanical processing of water-containing paper pulp |
| DE10258324B4 (en) * | 2002-12-13 | 2008-03-27 | Voith Patent Gmbh | Process for the production of sets for the milling of hydrous paper pulp |
| JP2007113138A (en) * | 2005-10-20 | 2007-05-10 | Aikawa Iron Works Co Ltd | Refiner |
| US7472855B2 (en) * | 2006-01-09 | 2009-01-06 | Andritz Inc. | Refiner stator plate having an outer row of teeth slanted to deflect pulp and method for pulp deflection during refining |
| US7300008B2 (en) | 2006-01-09 | 2007-11-27 | Andritz Inc. | Tooth refiner plates with varying feeding angles and refining method |
| FI122889B (en) * | 2010-12-31 | 2012-08-31 | Upm Kymmene Corp | Method and apparatus for preparing nanocellulose |
| WO2012149889A1 (en) * | 2011-05-01 | 2012-11-08 | 浙江黑白矿山机械有限公司 | Rotary crushing pair having uneven surfaces |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2654295A (en) * | 1951-05-02 | 1953-10-06 | Sutherland Refiner Corp | Refiner apparatus |
| US3910511A (en) * | 1974-05-20 | 1975-10-07 | Westvaco Corp | Open discharge pulp refiner |
| SE7502787L (en) * | 1975-03-12 | 1976-09-13 | Sca Development Ab | MALELEMENT |
| GB1541058A (en) * | 1975-04-09 | 1979-02-21 | Uddeholms Ab | Pulp refining apparatus |
| US5200038A (en) * | 1985-08-28 | 1993-04-06 | International Paper Company | Pulp refiner with fluidizing inlet |
| SU1390281A1 (en) * | 1986-05-30 | 1988-04-23 | Пермский филиал Всесоюзного научно-исследовательского института целлюлозно-бумажной промышленности | Clothing of disk mill for disintegrating fibrous material |
| DE3628195A1 (en) * | 1986-08-20 | 1988-02-25 | Siemens Ag | REFINER FOR THE PROCESSING OF FIBER MATERIAL |
-
1995
- 1995-03-08 DE DE19508202A patent/DE19508202A1/en not_active Ceased
-
1996
- 1996-02-20 AT AT96102493T patent/ATE200321T1/en not_active IP Right Cessation
- 1996-02-20 EP EP96102493A patent/EP0731210B1/en not_active Expired - Lifetime
- 1996-02-20 DE DE59606687T patent/DE59606687D1/en not_active Expired - Fee Related
- 1996-02-29 US US08/610,117 patent/US5779168A/en not_active Expired - Fee Related
- 1996-03-07 FI FI961078A patent/FI961078A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2764997C1 (en) * | 2018-07-18 | 2022-01-24 | Михаэль ЙАРОЛИМ | Apparatus and method for processing fibres |
Also Published As
| Publication number | Publication date |
|---|---|
| US5779168A (en) | 1998-07-14 |
| EP0731210A3 (en) | 1998-06-10 |
| ATE200321T1 (en) | 2001-04-15 |
| DE19508202A1 (en) | 1996-09-12 |
| FI961078A (en) | 1996-09-09 |
| FI961078A0 (en) | 1996-03-07 |
| DE59606687D1 (en) | 2001-05-10 |
| EP0731210A2 (en) | 1996-09-11 |
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