EP2646160A2 - Dynamic element for the separating device of a stirring ball mill - Google Patents

Dynamic element for the separating device of a stirring ball mill

Info

Publication number
EP2646160A2
EP2646160A2 EP11833565.2A EP11833565A EP2646160A2 EP 2646160 A2 EP2646160 A2 EP 2646160A2 EP 11833565 A EP11833565 A EP 11833565A EP 2646160 A2 EP2646160 A2 EP 2646160A2
Authority
EP
European Patent Office
Prior art keywords
separating device
ball mill
dynamic element
agitator ball
grinding container
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
Application number
EP11833565.2A
Other languages
German (de)
French (fr)
Other versions
EP2646160B1 (en
Inventor
Horst Pausch
Jan Wolfrum
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Netzsch Feinmahltechnik GmbH
Original Assignee
Netzsch Feinmahltechnik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Netzsch Feinmahltechnik GmbH filed Critical Netzsch Feinmahltechnik GmbH
Publication of EP2646160A2 publication Critical patent/EP2646160A2/en
Application granted granted Critical
Publication of EP2646160B1 publication Critical patent/EP2646160B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/183—Feeding or discharging devices
    • B02C17/1835—Discharging devices combined with sorting or separating of material
    • B02C17/184—Discharging devices combined with sorting or separating of material with separator arranged in discharge path of crushing zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B02C17/161—Arrangements for separating milling media and ground material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B02C17/163—Stirring means

Definitions

  • the present invention relates to a separator with a dynamic element for agitator ball mills.
  • German Patent Application DE 10 2007 043 670 A1 discloses a stirred ball mill with a cylindrical grinding container, wherein a stirring shaft connected to a drive is arranged in the grinding container.
  • the agitator shaft transmits part of the drive energy to the grinding auxiliary bodies, which are arranged loosely in the grinding container.
  • a spiral separator is arranged before the Mahlgutauslass.
  • European patent application EP 1 468 739 A1 discloses a continuous agitating ball mill for fine grinding and fine grinding of a material with a cylindrical or conical grinding chamber for receiving grinding bodies. At one end of the grinding chamber an opening into the interior of the grinding chamber Gut inlet is arranged. At the other end of the grinding chamber, a good outlet leading out of the interior is placed. Furthermore, a plurality of stirring elements exhibiting and coaxial with the chamber axis agitator is present. In front of the good outlet is a separately driven separation system that separates the grinding media from the milled material and conveys it back into the interior of the grinding chamber.
  • the separation system is formed from a separating member having two coaxial with the chamber axis arranged circular discs.
  • the wing elements Between the circular discs several, symmetrically distributed around the disk center point, as well as from the disk edge inwardly leading conveyor or wing elements are arranged.
  • the wing elements generate a back pressure on the good-Mahl Sciences-Ge mixture, so that due to the centrifugal force and the different specific gravity, the grinding media separated from the product and transported back into the interior.
  • European Patent EP 0 627 262 B1 discloses a continuous agitator ball mill for fine grinding and fine grinding of a material.
  • This agitator ball mill is equipped with a cylindrical or conical, for Provided recording of Mahl stresses serving grinding chamber. At one end of the grinding chamber a Mahlguteinlass is arranged, which opens into the interior of the grinding chamber. At the other end of the grinding chamber a Mahlgutauslass is arranged, which leads out of the interior.
  • the agitator ball mill has stirring elements and an agitator which moves coaxially with respect to the grinding chamber axis for moving the grinding bodies, wherein the stirring elements are formed as paddlewheel or propeller-like and have a plurality of conveying elements.
  • a circular disc is arranged in each case, wherein at least one of the two discs has at least one central opening.
  • the stirrers are configured and dimensioned such that, during operation of the agitator ball mill, a portion of the mixture continuously flows past the rim of the disk having the central opening, radially inward toward the central opening. From there, the mixture flows back into the space between the discs. As a result, a uniform axial distribution of the grinding media in the interior of the grinding chamber is maintained.
  • the invention has for its object to provide a separation device with which the discharge of Mahlös stresses from a stirred ball mill is avoidable bar.
  • a further object of the invention is to provide a method with which the discharge of auxiliary grinding bodies from a stirred ball mill can be avoided.
  • the grinding container has at least one Mahlguteinlass and at least one
  • Mahlgutauslass on.
  • the agitator shaft transmits part of the drive energy of the Drive on the Mahltos emotions.
  • Mahltosterrorism are loosely distributed in the grinding container.
  • the agitator ball mill has a separation device associated with the Mahlgutauslass, wherein the separating device is arranged about an axis of rotation and / or rotates about this axis of rotation.
  • the separating device consists of at least two components, of which one component is at least one separating device and a second component is a dynamic element for generating a material flow.
  • the dynamic element is provided with radially extending channels or wings.
  • the agitator shaft of the agitator ball mill is provided with a cage.
  • the dynamic element of the separator is arranged at a distance from an end portion of the grinding container.
  • the distance between the element and the end part is adjustable from 0.5 mm to 30 mm. In a preferred embodiment, the distance between 2 mm and 15 mm is variable. Furthermore, the distance in the preferred embodiment is axially adjustable to the stirring shaft. The adjustment of the distance is used to adapt to different sized Mahltoselasticity.
  • the surface of the dynamic element and the end part of the grinding container are arranged conically with each other.
  • the angle between the axis of rotation and the surface of the element or between the axis of rotation and the end part is designed in the range of 5 ° to 85 °. In a preferred embodiment, the angle has a value of 15 ° to 80 °.
  • the value for the ratio of the length of the separator to the stirring length is in the range between 1: 1, 1 and 1: 2. Depending on how the separating device is designed, the value for the ratio can also be in the range between 1: 1, 3 and 1: 1, 7.
  • the ratio of the outer diameter of the separator to the inner diameter of the cage is in a value range of 1: 1, 05 to 1: 2.
  • the ratio of the outer diameter of the separator to the outer diameter of the end portion of the grinding container for the function of the separator is important. This ratio is in a range between 1: 1 and 1: 1, 2.
  • the cage is driven by the stirrer shaft. Furthermore, a separate
  • the separator may be a sieve, a sieve cartridge or a spiral. From the prior art, many separation devices for agitator known ball mills. These known separation devices can also be combined with the dynamic element according to the invention.
  • a method for operating a stirred ball mill with a separating device is disclosed.
  • a separating device is used, which consists of at least two components, wherein at least one separating device is combined with at least one dynamic element for generating a flow of material.
  • the dynamic element creates a flow between the outlet and the inlet of the separator.
  • the separating device and the dynamic element are driven together and / or independently of each other, as well as coupled to the stirring shaft or decoupled from this.
  • the pressure created by the circulation flow is higher in the transition area to the cage than at the end of the separator.
  • the rotational movement of the dynamic element produces a material flow which is directed radially from the axis of rotation to the agitator shaft.
  • Fig. 1 shows the schematic structure of a stirred ball mill according to the invention with a spiral separator.
  • Fig. 2 shows the schematic structure of a stirred ball mill according to the invention, wherein the main separating device is a screen cartridge.
  • Figures 3a and 3b show the length and diameter ratios of different divider configurations.
  • Fig. 4 shows the schematic structure of a dynamic element.
  • FIGS. 5 and 6 show schematically possible embodiments of the dynamic element.
  • FIG. 1 shows the schematic structure of an agitating ball mill 20 according to the invention with a separating device 30.
  • the agitating ball mill 20 shown consists of a grinding container 22 which is provided with a grinding material inlet 24 and a grinding material outlet 26.
  • a stirring shaft 28 is arranged centrally.
  • the separator 30 is arranged within the stirring shaft 28, the separator 30 is arranged.
  • the part of the stirring shaft 28 which encloses the separating device 30 is referred to as a cage 44.
  • This cage 44 may have axial recesses 45 or the like so that, for example, auxiliary grinding bodies can pass back into the grinding container 22 through these axial recesses 45.
  • the separating device 31 is designed in a spiral shape.
  • the separator 31 is associated with a dynamic element 32 for generating a flow of material.
  • the dynamic element 32 is positioned at a distance a from the end portion 27 of the grinding container 22.
  • the gap 42 defined as the distance a, the material to be ground can flow between the dynamic element 32 and the end part 27.
  • the material flow is generated by a rotational movement of the element 32 about the axis of rotation 29 around.
  • FIG. 2 shows the schematic structure of an agitating ball mill 20 according to the invention, wherein the separating device 31, 30 is a sieve 44 or a sieve cartridge 44.
  • the separator 31 is coupled to a dynamic element 32 for generating a flow of material.
  • FIG. 3 a shows the length and diameter ratios of different divider configurations.
  • FIG. 3 a is an agitator ball Mill 20 shown with a long separator 31.
  • FIG. 3b shows an agitating ball mill 20 with a short separating device 31.
  • the separating device 30 is surrounded by the stirring shaft 28.
  • the lengthwise divider 31 joins the lengthwise dynamic element 32.
  • the stirring shaft 28 is significantly longer in length L than the lengthwise divider 30.
  • the gap width 42 is determined by the distance a, which can be adjusted depending on the configuration of the agitator ball mill 20 and the size of the auxiliary grinding bodies (not shown)
  • the dynamic element 32 it is important that the dynamic element 32 and the Furthermore, it can be seen that the inner diameter D of the agitator shaft 28 is minimally larger than the outer diameter d of the separating device 30.
  • the outer diameter d 'of the end part However, 27 is significantly smaller than the inner diameter D of the stirring shaft 28th
  • FIG. 3b is identical to FIG. 3a except for the length of the separator 30 and its various components.
  • the length I of the separating device 30 is composed of the length I 'of the separating device 31 and of the length I "of the dynamic element 32.
  • the length L of the stirring shaft 28 is less than the length I of Separator 30.
  • the end portion 27 is only slightly superimposed by the agitator shaft 28.
  • FIG. 4 shows the schematic structure of a dynamic element 32 for generating a material flow.
  • the element 32 is constructed such that it is rotationally symmetrical about the axis of rotation 29.
  • the contact side 36 of the element 32 is in the installed state with a separator (not shown) in operative connection.
  • Ground material is sucked out of the separating device via a central bore 33 and discharged radially outward via the channels 34, again in the flow direction 37.
  • the ground material flow can emerge from the element 32.
  • the conical design of the active surface 38 of the element 32 is clear recognizable.
  • the cross section of the element decreases towards the end part (not shown).
  • FIGS. 5 and 6 show schematically possible embodiments of the dynamic element 32.
  • FIG. 5 shows a dynamic element 32 in a frontal view.
  • the channels 34 for generating a flow of material extend in an arcuate line from the central bore 33 to the outside to the active surface 38 of the element 32nd
  • FIG. 6 shows a further embodiment of a dynamic element 32.
  • the channels 34 extend from the central bore 33 radially outwards to the active surface 38.
  • the short channels 35 are concealed in the region of the central bore 33 by the material of the element 32. Due to the conical configuration of the element 32, these short channels 35 only emerge in the vicinity of the contact side (not shown).

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)

Abstract

The invention relates to a stirring ball mill having a cylindrical milling container. The milling container has at least one inlet for material to be ground and at least one outlet for material to be ground. A stirring shaft connected to a drive is arranged in the milling container. The stirring shaft transmits part of the drive energy of the drive to the milling aid elements. The milling aid elements are loosely distributed in the milling container. Furthermore, the stirring ball mill has a separating device associated with the outlet for material to be ground, wherein the separating device is arranged about a rotational axis and/or rotates about said rotational axis. The separating device comprises at least two components, of which one component is at least one separating device and a second component is a dynamic element for creating a material flow.

Description

DYNAMISCHES ELEMENT FÜR DIE TRENNEINRICHTUNG EINER  DYNAMIC ELEMENT FOR THE DISCONNECTION OF ONE
RÜHRWERKSKUGELMÜHLE  stirred ball mill
Die vorliegende Erfindung betrifft eine Trenneinrichtung mit einem dynamischen Element für Rührwerkskugelmühlen. The present invention relates to a separator with a dynamic element for agitator ball mills.
Die deutsche Patentanmeldung DE 10 2007 043 670 A1 offenbart eine Rührwerkskugelmühle mit einem zylindrischen Mahlbehälter, wobei im Mahlbehälter eine mit einem Antrieb verbundene Rührwelle angeordnet ist. Die Rührwelle überträgt einen Teil der Antriebsenergie auf die Mahlhilfskörper, die im Mahlbehälter lose angeordnet sind. Vor dem Mahlgutauslass ist eine spiralförmige Trenneinrichtung angeordnet. German Patent Application DE 10 2007 043 670 A1 discloses a stirred ball mill with a cylindrical grinding container, wherein a stirring shaft connected to a drive is arranged in the grinding container. The agitator shaft transmits part of the drive energy to the grinding auxiliary bodies, which are arranged loosely in the grinding container. Before the Mahlgutauslass a spiral separator is arranged.
Die europäische Patentanmeldung EP 1 468 739 A1 offenbart eine zum Fein- und Feinstmahlen eines Gutes dienende, kontinuierlich arbeitende horizontale Rührwerkskugelmühle mit einer zylindrischen oder konischen Mahlkammer zur Aufnahme von Mahlkörpern. An einem Ende der Mahlkammer ist ein in den Innenraum der Mahlkammer mündender Gut-Einlass angeordnet. Am anderen Ende der Mahlkammer ist ein aus dem Innenraum herausführender Gut-Auslass platziert. Weiterhin ist ein mehrere Rührorgane aufweisendes und zur Kammerachse koaxiales Rührwerk vorhanden. Vor dem Gut-Auslass ist ein separat angetriebenes Abtrennsystem, das die Mahlkörper vom gemahlenen Gut trennt und zurück in den Innenraum der Mahlkammer fördert, angeordnet. Das Abtrennsystem wird aus einem Trennorgan gebildet, das zwei koaxial zur Kammerachse angeordnete Kreisscheiben besitzt. Zwischen den Kreisscheiben sind mehrere, um den Scheibenmittelpunkt symmetrisch verteilte, sowie vom Scheibenrand nach innen führende Förder- bzw. Flügelelemente angeordnet. Beim Betrieb der Abtrennvorrichtung erzeugen die Flügelelemente einen Gegendruck auf das Gut-Mahlkörper-Ge misch, so dass aufgrund der Zentrifugalkraft und der unterschiedlichen spezifischen Dichte die Mahlkörper vom Produkt getrennt und zurück in den Innenraum befördert werden.European patent application EP 1 468 739 A1 discloses a continuous agitating ball mill for fine grinding and fine grinding of a material with a cylindrical or conical grinding chamber for receiving grinding bodies. At one end of the grinding chamber an opening into the interior of the grinding chamber Gut inlet is arranged. At the other end of the grinding chamber, a good outlet leading out of the interior is placed. Furthermore, a plurality of stirring elements exhibiting and coaxial with the chamber axis agitator is present. In front of the good outlet is a separately driven separation system that separates the grinding media from the milled material and conveys it back into the interior of the grinding chamber. The separation system is formed from a separating member having two coaxial with the chamber axis arranged circular discs. Between the circular discs several, symmetrically distributed around the disk center point, as well as from the disk edge inwardly leading conveyor or wing elements are arranged. During operation of the separation device, the wing elements generate a back pressure on the good-Mahlkörper-Ge mixture, so that due to the centrifugal force and the different specific gravity, the grinding media separated from the product and transported back into the interior.
Die europäische Patentschrift EP 0 627 262 B1 offenbart eine zum Fein- und Feinstmahlen eines Gutes dienende, kontinuierlich arbeitende Rührwerkskugelmühle. Diese Rührwerkskugelmühle ist mit einer zylindrischen oder konischen, zur Aufnahme von Mahlkörpern dienenden Mahlkammer versehen. Am einen Ende der Mahlkammer ist ein Mahlguteinlass angeordnet, welcher in den Innenraum der Mahlkammer mündet. Am anderen Ende der Mahlkammer ist ein Mahlgutauslass angeordnet, welcher aus dem Innenraum herausführt. Weiterhin weist die Rühr- werkskugelmühle Rührorgane und ein sich zur Mahlkammerachse koaxial bewegendes Rührwerk zum Bewegen der Mahlkörper auf, wobei die Rührorgane Schaufelrad- oder propellerartig ausgebildet sind und mehrere Förderelemente aufweisen. Beiderseits der Förderelemente ist je eine kreisförmige Scheibe angeordnet, wobei mindestens eine der beiden Scheiben mindestens eine zentrale Öffnung aufweist. Durch die zentrale Öffnung kann das aus den Mahlkörpern und dem zu mahlenden Gut gebildete Gemisch hindurchströmen. Die Rührorgane sind derart ausgebildet und bemessen, dass beim Betrieb der Rührwerkskugelmühle fortlaufend ein Teil des Gemisches über den Rand, der die zentrale Öffnung aufweisenden Scheibe, radial nach innen zur zentralen Öffnung zurückströmt. Von dort strömt das Gemisch in den Zwischenraum zwischen den Scheiben zurück. Dadurch bleibt eine gleichmäßige axiale Verteilung der Mahlkörper im Innenraum der Mahlkammer erhalten. European Patent EP 0 627 262 B1 discloses a continuous agitator ball mill for fine grinding and fine grinding of a material. This agitator ball mill is equipped with a cylindrical or conical, for Provided recording of Mahlkörpern serving grinding chamber. At one end of the grinding chamber a Mahlguteinlass is arranged, which opens into the interior of the grinding chamber. At the other end of the grinding chamber a Mahlgutauslass is arranged, which leads out of the interior. Furthermore, the agitator ball mill has stirring elements and an agitator which moves coaxially with respect to the grinding chamber axis for moving the grinding bodies, wherein the stirring elements are formed as paddlewheel or propeller-like and have a plurality of conveying elements. On each side of the conveying elements a circular disc is arranged in each case, wherein at least one of the two discs has at least one central opening. Through the central opening, the mixture formed by the grinding media and the material to be ground can flow through. The stirrers are configured and dimensioned such that, during operation of the agitator ball mill, a portion of the mixture continuously flows past the rim of the disk having the central opening, radially inward toward the central opening. From there, the mixture flows back into the space between the discs. As a result, a uniform axial distribution of the grinding media in the interior of the grinding chamber is maintained.
Der Erfindung liegt die Aufgabe zugrunde, eine Trennvorrichtung zu schaffen, mit welcher der Austrag von Mahlhilfskörpern aus einer Rührwerkskugelmühle vermeid- bar ist.  The invention has for its object to provide a separation device with which the discharge of Mahlhilfskörpern from a stirred ball mill is avoidable bar.
Die obige Aufgabe wird durch eine Trennvorrichtung in einer Rührwerkskugelmühle gelöst, die die Merkmale des Anspruchs 1 umfasst. Weitere vorteilhafte Merkmale sind den Merkmalen der Unteransprüche zu entnehmen.  The above object is achieved by a separating device in a stirred ball mill comprising the features of claim 1. Further advantageous features can be found in the features of the subclaims.
Eine weitere Aufgabe der Erfindung ist es, ein Verfahren bereit zu stellen, mit welchem der Austrag von Mahlhilfskörpern aus einer Rührwerkskugelmühle vermieden werden kann.  A further object of the invention is to provide a method with which the discharge of auxiliary grinding bodies from a stirred ball mill can be avoided.
Diese Aufgabe wird durch ein Verfahren gelöst, welches die Merkmale des Anspruches 11 umfasst.  This object is achieved by a method comprising the features of claim 11.
Es ist eine Rührwerkskugelmühle mit einem zylindrischen Mahlbehälter offenbart. Der Mahlbehälter weist mindestens einen Mahlguteinlass und mindestens einenAn agitating ball mill with a cylindrical grinding container is disclosed. The grinding container has at least one Mahlguteinlass and at least one
Mahlgutauslass auf. Im Mahlbehälter ist eine mit einem Antrieb verbundene Rührwelle angeordnet. Die Rührwelle überträgt einen Teil der Antriebsenergie des Antriebs auf die Mahlhilfskörper. Die Mahlhilfskörper sind lose im Mahlbehälter verteilt. Weiterhin besitzt die Rührwerkskugelmühle eine dem Mahlgutauslass zugeordnete Trenneinrichtung, wobei die Trenneinrichtung um eine Rotationsachse angeordnet ist und/oder um diese Rotationsachse rotiert. Die Trenneinrichtung besteht aus mindestens zwei Komponenten, wovon eine Komponente mindestens eine Trenneinrichtung und eine zweite Komponente ein dynamisches Element zum Erzeugen eines Materialstromes ist. Das dynamische Element ist mit radial verlaufenden Kanälen oder Flügeln versehen. Mahlgutauslass on. In the grinding container connected to a drive agitator shaft is arranged. The agitator shaft transmits part of the drive energy of the Drive on the Mahlhilfskörper. The Mahlhilfskörper are loosely distributed in the grinding container. Furthermore, the agitator ball mill has a separation device associated with the Mahlgutauslass, wherein the separating device is arranged about an axis of rotation and / or rotates about this axis of rotation. The separating device consists of at least two components, of which one component is at least one separating device and a second component is a dynamic element for generating a material flow. The dynamic element is provided with radially extending channels or wings.
Die Rührwelle der Rührwerkskugelmühle ist mit einem Käfig versehen. Das dynamische Element der Trenneinrichtung ist mit einem Abstand zu einem Endteil des Mahlbehälters angeordnet. Der Abstand zwischen dem Element und dem Endteil ist von 0,5 mm bis 30 mm einstellbar. In einer bevorzugten Ausführungsform ist der Abstand zwischen 2 mm und 15 mm variabel. Weiterhin ist der Abstand in der bevorzugten Ausführungsform axial zur Rührwelle verstellbar. Die Verstellung des Abstandes dient der Anpassung an verschieden große Mahlhilfskörper. The agitator shaft of the agitator ball mill is provided with a cage. The dynamic element of the separator is arranged at a distance from an end portion of the grinding container. The distance between the element and the end part is adjustable from 0.5 mm to 30 mm. In a preferred embodiment, the distance between 2 mm and 15 mm is variable. Furthermore, the distance in the preferred embodiment is axially adjustable to the stirring shaft. The adjustment of the distance is used to adapt to different sized Mahlhilfskörper.
Die Oberfläche des dynamischen Elementes und das Endteil des Mahlbehälters sind konisch zueinander angeordnet. Der Winkel zwischen der Rotationsachse und der Oberfläche des Elements beziehungsweise zwischen der Rotationsachse und dem Endteil ist im Bereich von 5° bis 85° ausgestaltet. In einer bevorzugten Ausführungs- form weist der Winkel einen Wert von 15° bis 80° auf. The surface of the dynamic element and the end part of the grinding container are arranged conically with each other. The angle between the axis of rotation and the surface of the element or between the axis of rotation and the end part is designed in the range of 5 ° to 85 °. In a preferred embodiment, the angle has a value of 15 ° to 80 °.
Der Wert für das Verhältnis von der Länge der Trenneinrichtung zur Rührweilenlänge liegt im Bereich zwischen 1 :1 ,1 und 1 :2. Je nach dem wie die Trenneinrichtung ausgestaltet ist, kann der Wert für das Verhältnis auch im Bereich zwischen 1 :1 ,3 und 1 :1 ,7 liegen. Das Verhältnis vom Außendurchmesser der Trenneinrichtung zum Innendurchmesser des Käfigs liegt in einem Wertebereich von 1 :1 ,05 bis 1 :2. Weiterhin ist das Verhältnis des Außendurchmessers der Trenneinrichtung zum Außendurchmesser des Endteiles des Mahlbehälters für die Funktion der Trenneinrichtung wichtig. Dieses Verhältnis liegt in einem Bereich zwischen 1 :1 und 1 :1 ,2. Der Antrieb des Käfigs erfolgt über die Rührwelle. Weiterhin kann ein separaterThe value for the ratio of the length of the separator to the stirring length is in the range between 1: 1, 1 and 1: 2. Depending on how the separating device is designed, the value for the ratio can also be in the range between 1: 1, 3 and 1: 1, 7. The ratio of the outer diameter of the separator to the inner diameter of the cage is in a value range of 1: 1, 05 to 1: 2. Furthermore, the ratio of the outer diameter of the separator to the outer diameter of the end portion of the grinding container for the function of the separator is important. This ratio is in a range between 1: 1 and 1: 1, 2. The cage is driven by the stirrer shaft. Furthermore, a separate
Antrieb zur Erzeugung der Drehbewegung der Trenneinrichtung vorgesehen sein. Für die Gestaltung der Trenneinrichtung sind verschiedene Ausgestaltungsformen möglich. Die Trenneinrichtung kann ein Sieb, eine Siebpatrone oder eine Spirale sein. Aus dem Stand der Technik sind viele Trenneinrichtungen für Rührwerks- kugelmühlen bekannt. Diese bekannten Trenneinrichtungen können mit dem erfindungsgemäßen dynamischen Element ebenfalls kombiniert werden. Drive be provided for generating the rotational movement of the separator. For the design of the separator different embodiments are possible. The separator may be a sieve, a sieve cartridge or a spiral. From the prior art, many separation devices for agitator known ball mills. These known separation devices can also be combined with the dynamic element according to the invention.
Weiterhin ist ein Verfahren zum Betreiben einer Rührwerkskugelmühle mit einer erfindungsgemäßen Trenneinrichtung offenbart. Hierbei wird eine Trenneinrichtung verwendet, die aus mindestens zwei Komponenten besteht, wobei mindestens eine Trenneinrichtung mit mindestens einem dynamischen Element zum Erzeugen einer Materialströmung kombiniert wird. Zwischen dem Ausgang der Trenneinrichtung und deren Eingang findet innerhalb des Mahlbehälters eine Materialzirkulation statt. Durch die Materialzirkulation ist es nicht mehr möglich, dass Mahlhilfskörper, in einen durch einen Abstand zwischen dem dynamischen Element und dem Endteil des Mahlbehälters ausgebildeten Spalt eintreten können. Das dynamische Element erzeugt eine Strömung zwischen dem Auslass und dem Einlass der Trenneinrichtung. Furthermore, a method for operating a stirred ball mill with a separating device according to the invention is disclosed. Here, a separating device is used, which consists of at least two components, wherein at least one separating device is combined with at least one dynamic element for generating a flow of material. Between the output of the separator and its input material circulation takes place within the grinding container. Due to the material circulation, it is no longer possible for auxiliary grinding bodies to enter a gap formed by a distance between the dynamic element and the end part of the grinding container. The dynamic element creates a flow between the outlet and the inlet of the separator.
Die Trenneinrichtung und das dynamische Element werden miteinander und/oder unabhängig voneinander, sowie mit der Rührwelle gekoppelt oder von dieser entkoppelt, angetrieben. Je nachdem, welches Material in der Rührwerkskugelmühle verarbeitet wird, kann es sinnvoll sein, verschiedene Betriebszustände einzustellen. Hierbei kann es auch sinnvoll sein, die Rührwelle mit einer anderen Geschwindigkeit rotatorisch zu bewegen als die Kombination aus Trenneinrichtung und dynamischen Element. The separating device and the dynamic element are driven together and / or independently of each other, as well as coupled to the stirring shaft or decoupled from this. Depending on which material is processed in the agitator ball mill, it may be useful to set different operating conditions. In this case, it may also be expedient to move the agitator shaft in rotation at a different speed than the combination of separating device and dynamic element.
Der Druck, der durch die Zirkulationsströmung erzeugt wird, ist im Übergangsbereich zum Käfig höher als am Ende der Trenneinrichtung. Durch die Drehbewegung des dynamischen Elements entsteht ein radial von der Rotationsachse zur Rührwelle hin gerichteter Materialstrom. The pressure created by the circulation flow is higher in the transition area to the cage than at the end of the separator. The rotational movement of the dynamic element produces a material flow which is directed radially from the axis of rotation to the agitator shaft.
Im Folgenden sollen Ausführungsbeispiele die Erfindung und ihre Vorteile anhand der beigefügten Figuren näher erläutern. Die Größenverhältnisse der einzelnen Elemente zueinander in den Figuren entsprechen nicht immer den realen Größenverhältnissen, da einige Formen vereinfacht und andere Formen zur besseren Veranschaulichung vergrößert im Verhältnis zu anderen Elementen dargestellt sind. In the following, embodiments of the invention and their advantages with reference to the accompanying figures will be explained in more detail. The proportions of the individual elements to one another in the figures do not always correspond to the actual size ratios, since some shapes are simplified and other shapes are shown enlarged in relation to other elements for better illustration.
Fig. 1 zeigt den schematischen Aufbau einer erfindungsgemäßen Rührwerkskugelmühle mit einer spiralförmigen Trenneinrichtung. Fig. 1 shows the schematic structure of a stirred ball mill according to the invention with a spiral separator.
Fig. 2 zeigt den schematischen Aufbau einer erfindungsgemäßen Rührwerkskugelmühle, wobei die Haupttrenneinrichtung eine Siebpatrone ist. Fig. 3a und 3b zeigen die Längen- und Durchmesserverhältnisse von verschiedenen Trenneinrichtungskonfigurationen. Fig. 2 shows the schematic structure of a stirred ball mill according to the invention, wherein the main separating device is a screen cartridge. Figures 3a and 3b show the length and diameter ratios of different divider configurations.
Fig. 4 zeigt den schematischen Aufbau eines dynamischen Elements.  Fig. 4 shows the schematic structure of a dynamic element.
Die Fig. 5 und 6 zeigen schematisch mögliche Ausgestaltungsformen des dyna- mischen Elements.  FIGS. 5 and 6 show schematically possible embodiments of the dynamic element.
Für gleiche oder gleich wirkende Elemente der Erfindung werden identische Bezugszeichen verwendet. Ferner werden der Übersicht halber nur Bezugszeichen in den einzelnen Figuren dargestellt, die für die Beschreibung der jeweiligen Figur erforderlich sind.  For identical or equivalent elements of the invention, identical reference numerals are used. Furthermore, for the sake of clarity, only reference symbols are shown in the individual figures, which are required for the description of the respective figure.
Fig. 1 zeigt den schematischen Aufbau einer erfindungsgemäßen Rührwerkskugelmühle 20 mit einer Trenneinrichtung 30. Die dargestellte Rührwerkskugelmühle 20 besteht aus einem Mahlbehälter 22, welcher mit einem Mahlguteinlass 24 und einem Mahlgutauslass 26 versehen ist. Im Mahlbehälter 22 ist zentral eine Rührwelle 28 angeordnet. Innerhalb der Rührwelle 28 ist die Trenneinrichtung 30 angeordnet. Der Teil der Rührwelle 28, der die Trenneinrichtung 30 umschließt wird als Käfig 44 bezeichnet. Dieser Käfig 44 kann axiale Aussparungen 45 oder Ähnliches aufweisen, so dass durch diese axialen Aussparungen 45 hindurch zum Beispiel Mahlhilfskörper zurück in den Mahlbehälter 22 gelangen können. In dem in der Figur 1 dargestellten Ausführungsbeispiel ist die Trenneinrichtung 31 spiralförmig ausgestaltet. Der Trenneinrichtung 31 ist ein dynamisches Element 32 zum Erzeugen eines Materialstroms zugeordnet. Das dynamische Element 32 ist in einem Abstand a vom Endteil 27 des Mahlbehälters 22 positioniert. Durch den als Abstand a definierten Spalt 42 kann das Mahlgut zwischen dem dynamischen Element 32 und dem Endteil 27 strömen. Die Materialströmung wird durch eine rotatorische Bewegung des Elements 32 um die Rotationsachse 29 herum erzeugt. 1 shows the schematic structure of an agitating ball mill 20 according to the invention with a separating device 30. The agitating ball mill 20 shown consists of a grinding container 22 which is provided with a grinding material inlet 24 and a grinding material outlet 26. In the grinding container 22, a stirring shaft 28 is arranged centrally. Within the stirring shaft 28, the separator 30 is arranged. The part of the stirring shaft 28 which encloses the separating device 30 is referred to as a cage 44. This cage 44 may have axial recesses 45 or the like so that, for example, auxiliary grinding bodies can pass back into the grinding container 22 through these axial recesses 45. In the exemplary embodiment illustrated in FIG. 1, the separating device 31 is designed in a spiral shape. The separator 31 is associated with a dynamic element 32 for generating a flow of material. The dynamic element 32 is positioned at a distance a from the end portion 27 of the grinding container 22. By means of the gap 42 defined as the distance a, the material to be ground can flow between the dynamic element 32 and the end part 27. The material flow is generated by a rotational movement of the element 32 about the axis of rotation 29 around.
Fig. 2 zeigt den schematischen Aufbau einer erfindungsgemäßen Rührwerkskugelmühle 20, wobei die Trenneinrichtung 31 , 30 ein Sieb 44 oder eine Siebpatrone 44 ist. Die Trenneinrichtung 31 ist mit einem dynamischen Element 32 zum Erzeugen eines Materialstroms gekoppelt.  FIG. 2 shows the schematic structure of an agitating ball mill 20 according to the invention, wherein the separating device 31, 30 is a sieve 44 or a sieve cartridge 44. The separator 31 is coupled to a dynamic element 32 for generating a flow of material.
Die Fig. 3a und 3b zeigen die Längen- und Durchmesserverhältnisse von verschiedenen Trenneinrichtungskonfigurationen. In der Figur 3a ist eine Rührwerkskugel- mühle 20 mit einer langen Trenneinrichtung 31 dargestellt. Die Figur 3b hingegen zeigt eine Rührwerkskugelmühle 20 mit einer kurzen Trenneinrichtung 31. Figures 3a and 3b show the length and diameter ratios of different divider configurations. In FIG. 3 a is an agitator ball Mill 20 shown with a long separator 31. On the other hand, FIG. 3b shows an agitating ball mill 20 with a short separating device 31.
Bei der in der Fig. 3a dargestellten Rührwerkskugelmühle 20 ist die Trenneinrichtung 30 von der Rührwelle 28 umgeben. Der Trenneinrichtung 31 mit der Länge schließt sich das dynamische Element 32 mit der Länge I" an. Die Rührwelle 28 ist mit einer Länge L deutlich länger als die Trenneinrichtung 30 mit der Länge I. Zwischen dem dynamischen Element 32 und dem Endteil 27 ist ein Spalt 42 ausgebildet. Die Spaltweite 42 ist vom Abstand a bestimmt, welcher je nach Ausgestaltungsform der Rührwerkskugelmühle 20 und je nach Größe der Mahlhilfskörper (nicht dargestellt) angepasst werden kann. Für die Funktion der Trenneinrichtung 30 ist es wichtig, dass das dynamische Element 32 und das Endteil 27 nicht nur in einem definierten Abstand a, sondern auch in einem bestimmten Winkel w zueinander angeordnet sind. Weiterhin ist zu erkennen, dass der Innendurmesser D der Rührwelle 28 minimal größer ist als der Außendurchmesser d der Trenneinrichtung 30. Der Außendurchmesser d' des Endteils 27 ist jedoch deutlich geringer als der Innendurchmesser D der Rührwelle 28.  In the stirred ball mill 20 shown in FIG. 3 a, the separating device 30 is surrounded by the stirring shaft 28. The lengthwise divider 31 joins the lengthwise dynamic element 32. The stirring shaft 28 is significantly longer in length L than the lengthwise divider 30. There is a gap between the dynamic element 32 and the end portion 27 The gap width 42 is determined by the distance a, which can be adjusted depending on the configuration of the agitator ball mill 20 and the size of the auxiliary grinding bodies (not shown) For the function of the separating device 30, it is important that the dynamic element 32 and the Furthermore, it can be seen that the inner diameter D of the agitator shaft 28 is minimally larger than the outer diameter d of the separating device 30. The outer diameter d 'of the end part However, 27 is significantly smaller than the inner diameter D of the stirring shaft 28th
Die Fig. 3b ist bis auf die Länge der Trenneinrichtung 30 und seiner verschiedenen Bestandteile mit der Figur 3a identisch. Die Länge I der Trenneinrichtung 30 setzt sich aus der Länge I' der Trenneinrichtung 31 und aus der Länge I" des dynamischen Elements 32 zusammen. Bei der in der Figur 3b dargestellten Ausführungsform ist die Länge L der Rührwelle 28 jedoch geringer als die Länge I der Trenneinrichtung 30. Weiterhin wird das Endteil 27 nur geringfügig von der Rührwelle 28 überlagert. FIG. 3b is identical to FIG. 3a except for the length of the separator 30 and its various components. The length I of the separating device 30 is composed of the length I 'of the separating device 31 and of the length I "of the dynamic element 32. However, in the embodiment shown in Figure 3b, the length L of the stirring shaft 28 is less than the length I of Separator 30. Furthermore, the end portion 27 is only slightly superimposed by the agitator shaft 28.
Fig. 4 zeigt den schematischen Aufbau eines dynamischen Elements 32 zur Erzeugung einer Materialströmung. Das Element 32 ist derart aufgebaut, dass es rotationssymetrisch um die Rotationsachse 29 verläuft. Die Kontaktseite 36 des Elements 32 steht im eingebauten Zustand mit einer Trenneinrichtung (nicht dargestellt) in Wirkzusammenhang. Über eine Mittelbohrung 33 wird Mahlgut aus der Trenneinrichtung angesaugt und über die Kanäle 34 radial nach außen, in Strömungsrichtung 37 wieder abgegeben. Durch die Öffnungen 39 an der Wirkober- fläche 38 des Elements 32 kann der Mahlgutstrom aus dem Element 32 austreten.4 shows the schematic structure of a dynamic element 32 for generating a material flow. The element 32 is constructed such that it is rotationally symmetrical about the axis of rotation 29. The contact side 36 of the element 32 is in the installed state with a separator (not shown) in operative connection. Ground material is sucked out of the separating device via a central bore 33 and discharged radially outward via the channels 34, again in the flow direction 37. Through the openings 39 on the active surface 38 of the element 32, the ground material flow can emerge from the element 32.
Deutlich ist die konische Gestaltung der Wirkoberfläche 38 des Elements 32 erkennbar. Der Querschnitt des Elements nimmt in Richtung zum Endteil (nicht dargestellt) ab. The conical design of the active surface 38 of the element 32 is clear recognizable. The cross section of the element decreases towards the end part (not shown).
Die Fig. 5 und 6 zeigen schematisch mögliche Ausgestaltungsformen des dynamischen Elements 32. Die Fig. 5 zeigt ein dynamisches Element 32 in einer Frontal- ansieht. Die Kanäle 34 zum Erzeugen einer Materialströmung verlaufen in einer bogenförmigen Linie von der Mittelbohrung 33 nach außen zur Wirkoberfläche 38 des Elements 32.  FIGS. 5 and 6 show schematically possible embodiments of the dynamic element 32. FIG. 5 shows a dynamic element 32 in a frontal view. The channels 34 for generating a flow of material extend in an arcuate line from the central bore 33 to the outside to the active surface 38 of the element 32nd
In der Fig. 6 ist eine weitere Ausgestaltungsform eines dynamischen Elements 32 dargestellt. Die Kanäle 34 verlaufen von der Mittelbohrung 33 radial nach außen zur Wirkoberfläche 38. Die kurzen Kanäle 35 sind im Bereich der Mittelbohrung 33 vom Material des Elements 32 verdeckt. Durch die konische Ausgestaltung des Elements 32 treten diese kurzen Kanäle 35 erst in der Nähe der Kontaktseite (nicht dargestellt) hervor.  FIG. 6 shows a further embodiment of a dynamic element 32. The channels 34 extend from the central bore 33 radially outwards to the active surface 38. The short channels 35 are concealed in the region of the central bore 33 by the material of the element 32. Due to the conical configuration of the element 32, these short channels 35 only emerge in the vicinity of the contact side (not shown).
Die Erfindung wurde unter Bezugnahme auf eine bevorzugte Ausführungsform beschrieben. The invention has been described with reference to a preferred embodiment.
Bezugszeichen reference numeral
20 Rührwerkskugelmühle 20 agitator ball mill
22 Mahlbehälter  22 grinding containers
24 Mahlguteinlass  24 regrind intake
26 Mahigutauslass  26 Mahigut outlet
27 Endteil des Mahlbehälters  27 End part of the grinding container
28 Rührwelle  28 stirrer shaft
29 Rotationsachse  29 rotation axis
30 Trenneinrichtung  30 separating device
31 Trenneinrichtung  31 separating device
32 Element zum Erzeugen eines Materialstromes 32 element for generating a material flow
33 Mittelbohrung 33 center hole
34 Kanäle  34 channels
35 kurze Kanäle  35 short channels
36 Kontaktseite des Elements  36 contact side of the element
37 Strömungsrichtungen  37 flow directions
38 Oberfläche des Elements  38 surface of the element
39 Öffnungen  39 openings
42 Spalt 42 gap
44 Käfig  44 cage
45 Aussparungen  45 recesses
a Abstand a distance
w Winkel w angle
L Rührwellenlänge  L stirring wavelength
I Länge der Trenneinrichtung  I length of the separating device
P Länge der Trenneinrichtung  P length of the separating device
I" Länge des Elements  I "length of the element
D Innendurchmesser der Rührwelle  D Inner diameter of the stirring shaft
d Außendurchmesser der Trenneinrichtung d' Außendurchmesser des Endteils d outer diameter of the separator d 'outer diameter of the end portion

Claims

Patentansprüche claims
Rührwerkskugelmühle (20) mit einem zylindrischen Mahlbehälter (22) der mindestens einen Mahlguteinlass (24) und mindestens einen MahlgutauslassAgitator ball mill (20) with a cylindrical grinding container (22) of the at least one Mahlguteinlass (24) and at least one Mahlgutauslass
(26) aufweist, wobei im Mahlbehälter (22) eine mit einem Antrieb verbundene Rührwelle (28) angeordnet ist, die einen Teil der Antriebsenergie auf Mahlhilfskörper überträgt, wobei die Mahlhilfskörper im Mahlbehälter (22) lose verteilt sind und einer dem Mahlgutauslass (26) der Rührwerkskugelmühle (20) zugeordneten Trenneinrichtung (30), wobei die Trenneinrichtung (30) um eine Rotationsachse (29) angeordnet ist und/oder um diese Rotationsachse (29) rotiert, dadurch gekennzeichnet, dass die Trenneinrichtung (30) aus mindestens zwei Komponenten besteht, wovon eine Komponente mindestens eine Trenneinrichtung (31 ) und eine zweite ein dynamisches Element (32) mit radial verlaufenden Kanälen (34) oder Flügeln zum Erzeugen eines Material- Stromes versehen ist. (26), wherein in the grinding container (22) connected to a drive agitator shaft (28) is arranged, which transfers a part of the drive energy to Mahlhilfskörper, the Mahlhilfskörper are loosely distributed in the grinding container (22) and a Mahlgutauslass (26) the agitating ball mill (20) associated separating device (30), wherein the separating device (30) is arranged about a rotation axis (29) and / or about this rotation axis (29), characterized in that the separating device (30) consists of at least two components of which one component is provided with at least one separating device (31) and a second one dynamic element (32) with radially extending channels (34) or vanes for generating a flow of material.
Rührwerkskugelmühle (20) nach Anspruch 1 , dadurch gekennzeichnet, dass das dynamische Element (32) mit einem Abstand (a) zu einem EndteilAgitator ball mill (20) according to claim 1, characterized in that the dynamic element (32) with a distance (a) to an end portion
(27) des Mahlbehälters (22) angeordnet ist. (27) of the grinding container (22) is arranged.
Rührwerkskugelmühle (20) nach Anspruch 2, dadurch gekennzeichnet, dass der Abstand (a) von 0,5 mm bis 30 mm, vorzugsweise von 2 mm bis 15 mm einstellbar ist. Agitator ball mill (20) according to claim 2, characterized in that the distance (a) of 0.5 mm to 30 mm, preferably from 2 mm to 15 mm is adjustable.
Rührwerkskugelmühle (20) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass eine Oberfläche (38) des dynamischen Elementes (32) und das Endteil (27) des Mahlbehälters (22) konisch zueinander angeordnet sind. Agitator ball mill (20) according to one of claims 1 to 3, characterized in that a surface (38) of the dynamic element (32) and the end portion (27) of the grinding container (22) are arranged conically to one another.
Rührwerkskugelmühle (20) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Verhältnis der Länge (I) der Trenneinrichtung (30) zur Rührwellenlänge (L) im Bereich zwischen 1 :1 ,1 und 1 :2, vorzugsweise im Bereich zwischen 1 : 1 ,3 und 1 : 1 ,7 liegt. Agitator ball mill (20) according to one of claims 1 to 4, characterized in that the ratio of the length (I) of the separating device (30) to the stirring wavelength (L) in the range between 1: 1, 1 and 1: 2, preferably in the range between 1: 1, 3 and 1: 1, 7 is located.
Rührwerkskugelmühle (20) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Verhältnis vom Außendurchmesser (d) der Trenneinrichtung (30) zum Innendurchmesser (D) des Käfigs (44) in einem Bereich von 1 :1 ,05 bis 1 :2 liegt. Agitator ball mill (20) according to one of claims 1 to 5, characterized in that the ratio of the outer diameter (d) of the separating device (30) to the inner diameter (D) of the cage (44) in a range of 1: 1, 05 to 1: 2 lies.
7. Rührwerkskugelmühle (20) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Verhältnis des Außendurchmessers (d) der Trenneinrichtung (30) zum Außendurchmesser (d') des Endteiles (27) des Mahlbehälters (22) in einem Bereich zwischen 1 :1 und 1 :1 ,2 liegt. 7. agitator ball mill (20) according to one of claims 1 to 6, characterized in that the ratio of the outer diameter (d) of the separating device (30) to the outer diameter (d ') of the end portion (27) of the grinding container (22) in a range between 1: 1 and 1: 1, 2 is located.
8. Rührwerkskugelmühle (20) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Antrieb des Käfigs (44) über die Rührwelle (28) erfolgt. 8. agitator ball mill (20) according to one of claims 1 to 7, characterized in that the drive of the cage (44) via the stirring shaft (28).
9. Rührwerkskugelmühle (20) nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass ein separater Antrieb zur Erzeugung der Drehbewegung der Trenneinrichtung (30) vorgesehen ist. 9. agitator ball mill (20) according to one of claims 1 to 8, characterized in that a separate drive for generating the rotational movement of the separating device (30) is provided.
10. Rührwerkskugelmühle (20) nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Trenneinrichtung (31) ein Sieb, eine Siebpatrone oder eine Spirale ist. 10. agitator ball mill (20) according to one of claims 1 to 9, characterized in that the separating device (31) is a sieve, a screen cartridge or a spiral.
11. Verfahren zum Betreiben einer Rührwerkskugelmühle (20) gemäß einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass eine Trenneinrichtung (30) verwendet wird, die aus mindestens zwei Komponenten besteht, wobei mindestens eine Trenneinrichtung (31) mit mindestens einem dynamischen Element (32) zum Erzeugen einer Materialströmung kombiniert wird, und dass zwischen dem Ausgang der Trenneinrichtung (30) deren Eingang innerhalb des Mahlbehälters (22) eine Materialzirkulation stattfindet. 11. A method for operating a stirred ball mill (20) according to any one of claims 1 to 10, characterized in that a separating device (30) is used, which consists of at least two components, wherein at least one separating device (31) with at least one dynamic element ( 32) is combined to produce a flow of material, and that takes place between the output of the separator (30) whose input within the grinding container (22) a material circulation.
12. Verfahren nach Anspruch 11 , dadurch gekennzeichnet, dass durch die Materialzirkulation das Eindringen von Mahlhilfskörpern in einen durch einen Abstand (a) zwischen dem dynamischen Element (32) und dem Endteil (27) des Mahlbehäiters (22) ausgebildeten Spalt (42) vermieden wird. 12. The method according to claim 11, characterized in that by the circulation of material, the penetration of Mahlhilfskörpern in a by a distance (a) between the dynamic element (32) and the end portion (27) of the Mahlbehäiters (22) formed gap (42) avoided becomes.
13. Verfahren nach einem der Ansprüche 11 oder 12, dadurch gekennzeichnet, dass das dynamische Element (32) eine Strömung zwischen dem Auslass und dem Einlass der Trenneinrichtung (31) erzeugt. 13. The method according to any one of claims 11 or 12, characterized in that the dynamic element (32) generates a flow between the outlet and the inlet of the separating device (31).
14. Verfahren nach einem der Ansprüche 11 bis 13, dadurch gekennzeichnet, dass die Trenneinrichtung (31) und das dynamische Element (32) miteinander und/oder unabhängig voneinander, sowie mit der Rührwelle (28) gekoppelt oder von dieser entkoppelt, angetrieben werden. 14. The method according to any one of claims 11 to 13, characterized in that the separating device (31) and the dynamic element (32) with each other and / or independently, as well as with the stirring shaft (28) coupled or decoupled from this, are driven.
15. Verfahren nach Anspruch 14, dadurch gekennzeichnet, dass der Druck der Zirkulationsströmung im Übergangsbereich zum Käfig (44) höher ist als am Ende der Trenneinrichtung (31). 15. The method according to claim 14, characterized in that the pressure of the circulation flow in the transition region to the cage (44) is higher than at the end of the separating device (31).
16. Verfahren nach einem der Ansprüche 11 bis 15, dadurch gekennzeichnet, dass durch die Drehbewegung des dynamischen Elements (32) ein radial von der Rotationsachse (29) zur Rührwelle (28) hin gerichteter Materialstrom entsteht. 16. The method according to any one of claims 11 to 15, characterized in that by the rotational movement of the dynamic element (32) a radially from the axis of rotation (29) to the stirring shaft (28) directed towards material flow is formed.
EP11833565.2A 2010-12-04 2011-12-01 Dynamic element for the separating device of a stirring ball mill Active EP2646160B1 (en)

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PCT/DE2011/002060 WO2012083915A2 (en) 2010-12-04 2011-12-01 Dynamic element for the separating device of a stirring ball mill

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US20140048632A1 (en) 2014-02-20
RU2555915C2 (en) 2015-07-10
DE102010053484A1 (en) 2012-06-06
JP2013544187A (en) 2013-12-12
BR112013013770B1 (en) 2020-07-14
KR101769656B1 (en) 2017-08-18
US8876028B2 (en) 2014-11-04
WO2012083915A4 (en) 2012-10-26
US8794558B2 (en) 2014-08-05
CN103298561A (en) 2013-09-11
KR20130135279A (en) 2013-12-10
RU2013130294A (en) 2015-01-10
WO2012083915A3 (en) 2012-08-23
BR112013013770B8 (en) 2020-11-24
BR112013013770A2 (en) 2016-09-13
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EP2646160B1 (en) 2016-02-03
JP5875595B2 (en) 2016-03-02

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