EP2488304B1 - Roller press comprising a device for precompressing material to be ground - Google Patents

Roller press comprising a device for precompressing material to be ground Download PDF

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Publication number
EP2488304B1
EP2488304B1 EP10742498.8A EP10742498A EP2488304B1 EP 2488304 B1 EP2488304 B1 EP 2488304B1 EP 10742498 A EP10742498 A EP 10742498A EP 2488304 B1 EP2488304 B1 EP 2488304B1
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EP
European Patent Office
Prior art keywords
roller press
nip
ground
vibration
press according
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Not-in-force
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EP10742498.8A
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German (de)
French (fr)
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EP2488304A1 (en
Inventor
Hans-Peter Jeschinowski
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KHD Humboldt Wedag AG
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KHD Humboldt Wedag AG
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Publication of EP2488304A1 publication Critical patent/EP2488304A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/286—Feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/42—Driving mechanisms; Roller speed control

Definitions

  • the invention relates to a roller press for high pressure crushing of material to be ground in a nip, comprising two opposing rollers forming a nip, which passes through the comminuted material to be comminuted in the crushing under high pressure and thereby forms a break in the structure of the millbase in the nip, and a feeding device, the the millbase is evenly applied to the nip, wherein the volume of the abandoned millbase forms a Kompaktenzone ranging from about the middle of the nip to just over the middle of the nip.
  • the regrind offers the passage through the nip the opportunity to dodge into the air space and so avoid the high pressure in the nip, whereby the crushing performance of the high-pressure roll press considerably is reduced. Furthermore, this can cause the high-pressure roller press to run unevenly, in which the rollers perform a rotational vibration, because the drive of the roller press rolls is repeatedly braked and free to run again.
  • feeding devices for ground material in a high-pressure roller press which regulate the inflow of the ground stock in a controlled manner, so that a constant bulk cone forms in the space between the two counter-rotating roller press rollers.
  • the regrind subjected to precompression via a screw conveyor.
  • this type of loading of the nip but not sufficient to ensure a vibration-free operation of the roller press rolls and to show a continuous operation of the entire crushing machine as a high-pressure roller press.
  • Uneven grain distribution in the material to be ground and air pockets in the bed are not always sufficiently evened by a sole control of the bulk cone in the space between the opposing rollers.
  • the object of the invention is therefore to improve the intake behavior of a high-pressure roller press.
  • the object according to the invention is achieved in that a device for precompression in the form of a vibration device is arranged above the compaction zone and projects into the compaction zone.
  • the ground material applied to the roller press is compacted shortly before and during the entry into the compaction zone, which does not have a very sharp boundary line, in the trapped air out of the zone Ground material is expelled.
  • the compaction zone extends from the center of the nip into an area above the nip, where the entry of the millbase results in a fluid movement due to the grinding agent disappearing downwards, whereby the free volume of the material to be ground is reduced, thereby increasing the density of the millbase.
  • a device for pre-compression is arranged there exactly.
  • the vibration device also has the effect that the ground material flows better, because the vibration of the Mahlgutpiety be kept in a fluid-bed-like movement.
  • the vibrating device may consist of vibrating bars protruding into the compaction zone in approximately a vertical direction, one, two, three or more vibrating bars being arranged approximately parallel to each other, depending on the width of the grinding roller.
  • the control device In order to optimize the effect of the vibration device, it is possible to control the vibration intensity through a control loop, wherein the energy input of the vibration device is selected as the input parameter. If the power consumption is high or higher than a previously determined setpoint, the control device causes a reduction in the vibration intensity, because in the compacted material of the vibrating rod works without further compression effect, so that the energy consumption is increased. The reduction of vibration intensity As a result, during operation of the roller press new, non-compacted material flows in and thus the energy consumption decreases again, which indicates a lower density of the millbase above and at the beginning of the compaction zone. The control device controls in this case, the vibrating device back into an operating state with increased intensity until a steady state equilibrium between the vibration intensity of the vibrating device and the energy consumption, from which the Mahlgutêtêt is derivable adjusts.
  • Yet another control input is the grinding roller speed.
  • the vibrating device can be triggered manually to the vibrating device in case of possible disturbances of the roller press roll or blocked flow of the ground material trigger, which in turn the material flow of the material is triggered again.
  • FIG. 1 is a high-pressure roller press 1 according to the invention.
  • FIG. 1 a high-pressure roller press 10 according to the invention is shown, in which indicated by hatching / puncturing regrind from a continuously filled Vorbunker 11 via at least one material feed chute 12, 12 'in the space of two opposing, mounted in a machine frame 13 roller press rolls 14, 14' is passed. From this space between the roller press rolls 14, and 14 ', the millbase is then drawn into the compaction zone 15, where it is first compacted and then comminuted between the roller press rolls 14, 14' by high pressure, initially forming aggregated slugs 16 of shredded material, which occur in lumpy, but easily disintegrating form.
  • a device for compressing the material to be ground in the form of at least one vibrating rod 17 extends into the compaction zone to leave, whereby the regrind is compacted before passage of the nip.
  • the at least one vibration rod 17 may alone, in pairs, in three or even in the form of a whole battery of vertically extending into the Kompaktzone 15 vibrating rods carried out wine or alternatively as a vibrating rod which is aligned parallel to the center line of the nip and generates a uniform vibrating region over the nip, whereby the flowing into the nip millbase is compacted by a fluidized bed-like movement of the Mahlgutp personality in which the dispersed trapped air from the Ground material escapes.
  • FIG. 2 is a view of the high-pressure roller press 10 according to the invention shown in a view from below, between the two stored in machine frame 13 roller press rollers 14, 14 ', the vertically extending into the Kompaktzone circumferential profiles of the vibrating bars 17 are to be recognized as circles.
  • the vibrating bars 17 do not reach into the nip, but extend only into the compaction zone, where the ground material begins to compact due to the intake into the area between the roller press rolls 14, 14 '. Exactly at this point, the compacting effect of the vibrating bars as a device for pre-compression is greatest.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Crushing And Grinding (AREA)

Description

Die Erfindung betrifft Rollenpresse zur Hochdruckzerkleinerung von Mahlgut in einem Walzenspalt, aufweisend zwei gegenläufige Walzen, die einen Walzenspalt ausbilden, welchen das zu zerkleinernde Mahlgut bei der Zerkleinerung unter Hochdruck passiert und dabei im Walzenspalt einen Bruch im Gefüge des Mahlguts ausbildet, und eine Aufgabevorrichtung, die das Mahlgut gleichmäßig auf den Walzenspalt aufgibt, wobei das Volumen des aufgegebenen Mahlguts eine Kompaktionszone ausbildet, die von etwa der Mitte des Walzenspaltes bis kurz über die Mitte des Walzenspaltes reicht.The invention relates to a roller press for high pressure crushing of material to be ground in a nip, comprising two opposing rollers forming a nip, which passes through the comminuted material to be comminuted in the crushing under high pressure and thereby forms a break in the structure of the millbase in the nip, and a feeding device, the the millbase is evenly applied to the nip, wherein the volume of the abandoned millbase forms a Kompaktenzone ranging from about the middle of the nip to just over the middle of the nip.

Nach Schönert, DE 27 08 053 C3 , ist es bekannt, zur Zerkleinerung von sprödem Material, dieses durch Hochdruckbeanspruchung im Walzenspalt einer Hochdruckrollenpresse zu sogenannten Schülpen zu pressen, wobei das gesamte Materialgefüge bricht und dadurch in viele kleine Bruchstücke zerteilt wird. Diese Hochdruckzerkleinerung im Walzenspalt unterscheidet sich von der Zerkleinerung durch Scheren oder Reiben, wie es in einer herkömmlichen Mühle passiert, weil es primär auf die Druckbeanspruchung ankommt. Damit die korrespondierende Hochdruckwalzenpresse bestimmungsgemäß arbeiten kann, ist es wichtig, dass der Walzenspalt gleichmäßig mit Mahlgut beaufschlagt wird, denn bei einer ungleichmäßigen Beaufschlagung wechselt die Hochdruckrollenpresse in den Betriebszustand eines herkömmlichen Brechers, dessen Zerkleinerungswirkung anders ist als die einer gleichmäßig mit Mahlgut beaufschlagten Hochdruckwalzenpresse. Sofern das Mahlgut inhomogen mit Luft durchsetzt ist, bietet sich dem Mahlgut bei der Passage durch den Walzenspalt die Möglichkeit, in den Luftraum auszuweichen und so dem hohen Druck im Walzenspalt auszuweichen, wodurch die Zerkleinerungsleistung der Hochdruckwalzenpresse erheblich verringert wird. Des Weiteren kann dadurch die Hochdruckwalzenpresse veranlasst werden, ungleichmäßig zu laufen, in dem die Walzen eine Rotationsschwingung ausführen, weil der Antrieb der Rollenpressenwalzen wiederholend gebremst wird und wieder frei läuft.After Schonert, DE 27 08 053 C3 , It is known for crushing brittle material to press this by high pressure in the nip of a high-pressure roller press to so-called scabs, wherein the entire material structure breaks and is thereby divided into many small fragments. This high-pressure crushing in the nip differs from the comminution by shearing or rubbing, as happens in a conventional mill, because it depends primarily on the compressive stress. In order for the corresponding high-pressure roller press to operate properly, it is important that the roller gap is uniformly treated with regrind, because at an uneven loading, the high-pressure roller press changes to the operating state of a conventional crusher, the crushing effect is different than that of a high-pressure roller press evenly applied with regrind. If the regrind is inhomogeneously interspersed with air, the regrind offers the passage through the nip the opportunity to dodge into the air space and so avoid the high pressure in the nip, whereby the crushing performance of the high-pressure roll press considerably is reduced. Furthermore, this can cause the high-pressure roller press to run unevenly, in which the rollers perform a rotational vibration, because the drive of the roller press rolls is repeatedly braked and free to run again.

Um den Walzenspalt gleichmäßig mit Mahlgut zu beaufschlagen, sind Aufgabevorrichtungen für Mahlgut in einer Hochdruckrollenpresse bekannt, die den Zufluss des Mahlguts geregelt variieren, so dass sich ein konstanter Schüttkegel im Raum zwischen den beiden gegenläufigen Rollenpressenwalzen ausbildet. Beispielsweise wird bei der EP-A-0208947 das Mahlgut über eine Förderschnecke einer Vorkompression unterworfen. Je nach Art und Konsistenz des Mahlgutes reicht diese Art der Beaufschlagung des Walzenspaltes aber nicht aus, um einen vibrationsfreien Lauf der Rollenpressenwalzen zu gewährleisten und um eine kontinuierliche Arbeitsweise der gesamten Zerkleinerungsmaschine als Hochdruckwalzenpresse aufzuzeigen. Ungleichmäßige Kornverteilung im Mahlgut und Lufteinschlüsse in der Schüttung sind durch eine alleinige Regelung des Schüttkegels im Raum zwischen den gegenläufigen Walzen nicht immer in genügendem Maße zu vergleichmäßigen. Aufgabe der Erfindung ist es daher, das Einzugsverhalten einer Hochdruckrollenpresse zu verbessern.In order to apply uniformly to the nip with ground material, feeding devices for ground material in a high-pressure roller press are known, which regulate the inflow of the ground stock in a controlled manner, so that a constant bulk cone forms in the space between the two counter-rotating roller press rollers. For example, at the EP-A-0208947 the regrind subjected to precompression via a screw conveyor. Depending on the nature and consistency of the material to be ground this type of loading of the nip but not sufficient to ensure a vibration-free operation of the roller press rolls and to show a continuous operation of the entire crushing machine as a high-pressure roller press. Uneven grain distribution in the material to be ground and air pockets in the bed are not always sufficiently evened by a sole control of the bulk cone in the space between the opposing rollers. The object of the invention is therefore to improve the intake behavior of a high-pressure roller press.

Die erfindungsgemäße Aufgabe wird dadurch gelöst, dass eine Vorrichtung zum Vorverdichten in Form einer Vibrationsvorrichtung oberhalb der Kompaktionszone angeordnet ist und in die Kompaktionszone hineinragt.The object according to the invention is achieved in that a device for precompression in the form of a vibration device is arranged above the compaction zone and projects into the compaction zone.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.Further advantageous embodiments of the invention are specified in the subclaims.

Erfindungswesentlich ist, dass das auf die Rollenpresse beaufschlagte Mahlgut kurz vor und während des Eintritts in die Kompaktionszone, die keine sehr scharfe Begrenzungslinie hat, verdichtet wird, in dem eingeschlossene Luft aus dem Mahlgut ausgetrieben wird. Die Kompaktionszone reicht von der Walzenspaltmitte in einen Bereich über den Walzenspalt wo der Einzug des Mahlguts durch nach unten verschwindendes Mahlugt zu einer Fließbewegung führt, wobei sich das freie Volumen des Mahlgutes verringert und dadurch sich die Dichte des Mahlguts erhöht. Um diesen Effekt zu unterstützen, ist es vorgesehen, dass genau dort eine Vorrichtung zum Vorverdichten angeordnet ist.It is essential to the invention that the ground material applied to the roller press is compacted shortly before and during the entry into the compaction zone, which does not have a very sharp boundary line, in the trapped air out of the zone Ground material is expelled. The compaction zone extends from the center of the nip into an area above the nip, where the entry of the millbase results in a fluid movement due to the grinding agent disappearing downwards, whereby the free volume of the material to be ground is reduced, thereby increasing the density of the millbase. In order to support this effect, it is provided that a device for pre-compression is arranged there exactly.

In bevorzugter Form ist die Vorrichtung zum Verdichten ein Vibrationsstab, der das lockere Mahlgut in Schwingung versetzt, wobei die einzelnen Mahlgutpartikel durch die Schwingung nach unten in Richtung des Walzenspaltes fallen und im Mahlgut dispergierte Luft aus dem Mahlgut nach oben in die freie Atmosphäre entweicht. Neben der Vorverdichtung hat die Vibrationsvorrichtung auch die Wirkung, dass das Mahlgut besser fließt, weil durch die Vibration die Mahlgutpartikel in einer fließbettähnlichen Bewegung gehalten werden.In a preferred form, the device for compacting a vibrating rod which causes the loose material to vibrate, the individual Mahlgutpartikel fall through the vibration down in the direction of the nip and air dispersed in the millbase escapes from the millbase up into the free atmosphere. In addition to the precompression, the vibration device also has the effect that the ground material flows better, because the vibration of the Mahlgutpartikel be kept in a fluid-bed-like movement.

Die Vibrationsvorrichtung kann aus in etwa vertikaler Richtung in die Kompaktionszone hineinragenden Vibrationsstäben bestehen, wobei je nach Breite der Mahlwalze, ein, zwei, drei oder mehr Vibrationsstäbe etwa parallel zueinander angeordnet sind. Alternativ dazu ist, es auch möglich, einen Vibrationsstab parallel zur Mittellinie des Walzenspalts auszurichten, der über seine Länge den Walzenspalt gleichmäßig vibrierend den Walzenspalt überdeckt.The vibrating device may consist of vibrating bars protruding into the compaction zone in approximately a vertical direction, one, two, three or more vibrating bars being arranged approximately parallel to each other, depending on the width of the grinding roller. Alternatively, it is also possible to align a vibrating rod parallel to the center line of the nip, which over its length uniformly covers the nip vibrating the nip.

Um die Wirkung der Vibrationsvorrichtung zu optimieren, ist es möglich, die Vibrationsintensität durch einen Regelkreis zu regeln, wobei als Eingangsparameter die Energieaufnahme der Vibrationsvorrichtung gewählt ist. Sofern die Energieaufnahme hoch oder höher als ein zuvor bestimmter Sollwert ist, bewirkt die Regelungsvorrichtung eine Verringerung der Vibrationsintensität, denn im verdichteten Material arbeitet der Vibrationsstab ohne weitere Verdichtungswirkung, so dass die Energieaufnahme erhöht ist. Die Verringerung der Vibrationsintensität hat zur Folge, dass im laufenden Betrieb der Rollenpresse neues, unverdichtetes Material nachfließt und somit sich die Energieaufnahme wieder verringert, was eine geringere Dichte des Mahlguts über und am Anfang der Kompaktionszone anzeigt. Die Regelungsvorrichtung regelt in diesem Fall die Vibrationsvorrichtung wieder in einen Betriebszustand mit erhöhter Intensität, bis sich ein stationäres Gleichgewicht zwischen Vibrationsintensität der Vibrationsvorrichtung und deren Energieaufnahme, aus dem die Mahlgutdichte ableitbar ist, einstellt.In order to optimize the effect of the vibration device, it is possible to control the vibration intensity through a control loop, wherein the energy input of the vibration device is selected as the input parameter. If the power consumption is high or higher than a previously determined setpoint, the control device causes a reduction in the vibration intensity, because in the compacted material of the vibrating rod works without further compression effect, so that the energy consumption is increased. The reduction of vibration intensity As a result, during operation of the roller press new, non-compacted material flows in and thus the energy consumption decreases again, which indicates a lower density of the millbase above and at the beginning of the compaction zone. The control device controls in this case, the vibrating device back into an operating state with increased intensity until a steady state equilibrium between the vibration intensity of the vibrating device and the energy consumption, from which the Mahlgutdichte is derivable adjusts.

Neben der Energieaufnahme der Vorrichtung zur Verdichtung selbst, ist es auch zielführend, die Energieaufnahme des Walzenantriebes zu nutzen, denn eine erhöhte Energieaufnahme zeigt eine hohe Dichte des Mahlguts an und eine geringere, notwendige Antriebsleistung zeigt eine geringere Dichte des Mahlguts an. Bei diesem Regelprinzip ist darauf zu achten, dass Durchgänge von größeren Mahlgutpartikeln oder nicht durch Hochdruck zerkleinerbare Materialien, wie Metallstücke, die eine kurzzeitige erhöhte Energieaufnahme des Mahlwalzenantriebs erzeugen, in die Regelschleife eingehen, um dadurch ein Ausbreiten der Störung durch die Passage des nicht zerkleinerbaren Mahlgutpartikels in der Rollenpresse zu verhindern.In addition to the energy consumption of the device for compression itself, it is also expedient to use the energy absorption of the roller drive, because an increased energy intake indicates a high density of the ground material and a lower, necessary drive power indicates a lower density of the ground material. With this control principle, care must be taken that passages of larger regrind particles or materials that can not be crushed by high pressure, such as metal pieces, which generate a short-term increased energy absorption of the grinding roller drive, enter the control loop, thereby propagating the disturbance through the passage of the non-comminuted millbase particle to prevent in the roller press.

Noch eine weitere Regeleingangsgröße ist die Mahlwalzengeschwindigkeit. Je schneller die Rollenpressenwalze rotiert, desto intensiver muss die Vorrichtung zur Verdichtung arbeiten, hier der Vibrationsstab vibrieren, um das nun schneller in den Walzenspalt fließende Mahlgut in kürzerer Zeit zu verdichten.Yet another control input is the grinding roller speed. The faster the roller press roller rotates, the more intensively the device must work for compaction, in this case the vibrating rod vibrates in order to compact the grinding material, which now flows more quickly into the nip, in a shorter time.

In besonderer Ausgestaltung der Erfindung ist vorgesehen, dass die Vibrationsvorrichtung manuell ausgelöst werden kann, um bei möglichen Störungen der Rollenpressenwalze oder bei blockiertem Fluss des Mahlguts die Vibrationsvorrichtung auszulösen, wodurch seinerseits der Materialfluss des Mahlguts wieder ausgelöst wird.In a particular embodiment of the invention, it is provided that the vibrating device can be triggered manually to the vibrating device in case of possible disturbances of the roller press roll or blocked flow of the ground material trigger, which in turn the material flow of the material is triggered again.

Die Erfindung wird anhand der folgenden Figuren näher erläutert. Es zeigen:

Figur 1
eine skizzierte Seitenansicht auf die eine Hochdruckrollenpresse,
Figur 2
die Hochdruckrollenpresse aus Figur 1 in einer Ansicht von unten.
The invention will be explained in more detail with reference to the following figures. Show it:
FIG. 1
a sketched side view of the one high-pressure roller press,
FIG. 2
the high-pressure roller press FIG. 1 in a view from below.

In Figur 1 ist eine erfindungsgemäße Hochdruckrollenpresse 1.In FIG. 1 is a high-pressure roller press 1 according to the invention.

In Figur 1 ist eine erfindungsgemäße Hochdruckrollenpresse 10 abgebildet, in welcher durch Schraffur/Punktierung angedeutetes Mahlgut aus einem kontinuierlich befüllten Vorbunker 11 über mindestens einen Materialaufgabeschacht 12, 12' in den Raum zweier gegenläufiger, in einem Maschinenrahmen 13 gelagerter Rollenpressenwalzen 14, 14' geleitet wird. Aus diesem Raum zwischen den Rollenpressenwalzen 14, und 14' wird sodann das Mahlgut in die Kompaktionszone 15 gezogen, wo es zunächst verdichtet und anschließend zwischen den Rollenpressenwalzen 14, 14' durch Hochdruckbeanspruchung zerkleinert wird, wobei sich zunächst aus zerkleinertem Material aggregierte Schülpen 16 ausbilden, die in stückiger, aber leicht zerfallender Form anfallen. Um bei der Passage des Mahlgutes vom Materialaufgabeschacht 12, 12' bis in die Kompaktionszone 15 das Mahlgut für einen gleichmäßigen lauf der Hochdruckrollenpresse 10 weiter zu verdichten, ist erfindungsgemäß vorgesehen, eine Vorrrichtung zur Verdichtung des Mahlguts in Form mindestens eines Vibrationsstabes 17 in die Kompaktionszone hineinreichen zu lassen, wodurch das Mahlgut vor Passage des Walzenspaltes verdichtet wird. Der mindestens eine Vibrationstab 17 kann allein, zu zweit, zu dritt oder auch in Form einer ganzen Batterie von vertikal in die Kompaktionszone 15 hineinreichende Vibrationsstäbe ausgeführt wein oder alternativ als ein Vibrationsstab, der parallel zur Mittelinie des Walzenspaltes ausgerichtet ist und einen gleichmäßigen vibrierenden Bereich über dem Walzenspalt erzeugt, wodurch das in den Walzenspalt hineinfließende Mahlgut durch eine fließbettähnliche Bewegung der Mahlgutpartikel verdichtet wird, in dem die dispergiert eingeschlossene Luft aus dem Mahlgut entweicht.In FIG. 1 a high-pressure roller press 10 according to the invention is shown, in which indicated by hatching / puncturing regrind from a continuously filled Vorbunker 11 via at least one material feed chute 12, 12 'in the space of two opposing, mounted in a machine frame 13 roller press rolls 14, 14' is passed. From this space between the roller press rolls 14, and 14 ', the millbase is then drawn into the compaction zone 15, where it is first compacted and then comminuted between the roller press rolls 14, 14' by high pressure, initially forming aggregated slugs 16 of shredded material, which occur in lumpy, but easily disintegrating form. In order to further compress the material to be ground for smooth running of the high-pressure roller press 10 during the passage of the material to be ground from the material feed chute 12, 12 'into the compaction zone 15, a device for compressing the material to be ground in the form of at least one vibrating rod 17 extends into the compaction zone to leave, whereby the regrind is compacted before passage of the nip. The at least one vibration rod 17 may alone, in pairs, in three or even in the form of a whole battery of vertically extending into the Kompaktzone 15 vibrating rods carried out wine or alternatively as a vibrating rod which is aligned parallel to the center line of the nip and generates a uniform vibrating region over the nip, whereby the flowing into the nip millbase is compacted by a fluidized bed-like movement of the Mahlgutpartikel in which the dispersed trapped air from the Ground material escapes.

In Figur 2 ist eine Ansicht auf die erfindungsgemäße Hochdruckrollenpresse 10 in einer Ansicht von unten dargestellt, wobei zwischen den beiden in Maschinenrahmen 13 gelagerten Rollenpressenwalzen 14, 14' die vertikal in die Kompaktionszone hineinreichenden Umfangsprofile der Vibrationsstäbe 17 als Kreise zu erkennen sind. Die Vibrationsstäbe 17 reichen dabei nicht in den Walzenspalt hinein, sondern reichen nur bis in die Kompaktionszone, wo das Mahlgut aufgrund des Einzuges in den sich zwischen den Rollenpressenwalzen 14, 14' verjüngenden Bereich beginnt, sich zu verdichten. Genau an dieser Stelle ist die verdichtende Wirkung der Vibrationsstäbe als Vorrichtung zur Vorverdichtung am größten.In FIG. 2 is a view of the high-pressure roller press 10 according to the invention shown in a view from below, between the two stored in machine frame 13 roller press rollers 14, 14 ', the vertically extending into the Kompaktzone circumferential profiles of the vibrating bars 17 are to be recognized as circles. The vibrating bars 17 do not reach into the nip, but extend only into the compaction zone, where the ground material begins to compact due to the intake into the area between the roller press rolls 14, 14 '. Exactly at this point, the compacting effect of the vibrating bars as a device for pre-compression is greatest.

BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS

11 HochdruckrollenpresseHigh-pressure roller press 1414 RollenpressenwalzeRoller press roller 1111 VorbunkerVorbunker 1515 KompaktionszoneKompaktionszone 1212 MaterialaufgabeschachtMaterial feed chute 1616 Schülpeslug 1313 Maschinenrahmenmachine frame 1717 Vibrationsvorrichtungvibration device

Claims (7)

  1. Roller press (10) for high-pressure comminution of material to be ground in a nip, comprising
    - two contra-rotating rolls (14, 14'), which form a nip through which the material to be ground passes under high pressure during comminution and forms a break in the structure of the material to be ground in the nip, and
    - a feed device (11, 12), which feeds the material to be ground to the nip evenly, the volume of material to be ground that is fed in forming a compaction zone (15), which reaches from approximately the centre of the nip as far as shortly beyond the centre of the nip,
    characterized in that
    a device for pre-compressing the material to be ground, in the form of a vibration device (17), is arranged above the compaction zone (15) and projects into the compaction zone (15).
  2. Roller press according to Claim 1,
    characterized in that
    the vibration device, in the form of at least one vibrating rod (17), preferably at least three vibrating rods (17) extending in parallel, reaches into the compaction zone (15) in an approximately vertical direction.
  3. Roller press according to Claim 1,
    characterized in that
    the vibration device, in the form of at least one vibrating rod (17), reaches into the compaction zone (15) in the horizontal direction parallel to the centre line of the nip.
  4. Roller press according to one of Claims 1 to 3,
    characterized in that
    the vibration device (17) has a control device which controls the vibration intensity in accordance with the energy consumed by the latter for operation, an increased consumption of energy resulting in a reduction in the vibration intensity and a reduced consumption of energy resulting in an increase in the vibration intensity.
  5. Roller press according to Claim 4,
    characterized in that
    the control device additionally controls in accordance with the energy consumption of the roll drive, an increased energy consumption of the roll drive resulting in a reduction in the vibration intensity and a reduced energy consumption resulting in an increase in the vibration intensity.
  6. Roller press according to either of Claims 4 and 5,
    characterized in that
    the vibration device (17) is additionally controlled in accordance with the rotational speed of the roller press rolls (14, 14'), an increased roll speed resulting in an increase in the vibration intensity and a reduced roll speed resulting in a reduction in the vibration intensity.
  7. Roller press according to one of Claims 1 to 6,
    characterized in that
    a manual triggering device for the vibration device (17) is provided.
EP10742498.8A 2009-10-17 2010-08-12 Roller press comprising a device for precompressing material to be ground Not-in-force EP2488304B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200920014079 DE202009014079U1 (en) 2009-10-17 2009-10-17 Roller press with device for pre-compacting the material to be ground
PCT/EP2010/061750 WO2011045099A1 (en) 2009-10-17 2010-08-12 Roller press comprising a device for precompressing material to be ground

Publications (2)

Publication Number Publication Date
EP2488304A1 EP2488304A1 (en) 2012-08-22
EP2488304B1 true EP2488304B1 (en) 2013-10-02

Family

ID=41462165

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10742498.8A Not-in-force EP2488304B1 (en) 2009-10-17 2010-08-12 Roller press comprising a device for precompressing material to be ground

Country Status (4)

Country Link
EP (1) EP2488304B1 (en)
DE (1) DE202009014079U1 (en)
DK (1) DK2488304T3 (en)
WO (1) WO2011045099A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012012460U1 (en) 2012-01-25 2013-01-25 Thyssenkrupp Polysius Ag Roller press for shredding brittle regrind
DE102013018325B4 (en) 2013-10-31 2019-03-21 Khd Humboldt Wedag Gmbh High-pressure roller press with regrind removal and method for avoiding vibrations during the application of regrind
DE102020115891B3 (en) 2020-06-16 2021-03-04 Khd Humboldt Wedag Gmbh High pressure roller press with vibration device in the feed device
DE102021103889B4 (en) 2021-02-18 2024-03-07 Khd Humboldt Wedag Gmbh High pressure roller press with vibrating side walls

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB525351A (en) * 1939-02-18 1940-08-27 Simon Ltd Henry Improvements relating to roller mills for cereal grain
GB853375A (en) * 1958-02-28 1960-11-09 Miag Muehlenbau & Ind Gmbh Roller mill feed stock guiding arrangement
DE2708053C3 (en) 1977-02-24 1986-05-07 Schönert, Klaus, Prof. Dr.-Ing., 7500 Karlsruhe Process for fine and ultra-fine comminution of materials with brittle behavior
DE3525935A1 (en) * 1985-07-19 1987-01-29 Krupp Polysius Ag METHOD AND SYSTEM FOR CRUSHING GROUND MATERIAL

Also Published As

Publication number Publication date
DK2488304T3 (en) 2014-01-13
DE202009014079U1 (en) 2009-12-31
EP2488304A1 (en) 2012-08-22
WO2011045099A1 (en) 2011-04-21

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