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EP2560761B1 - Feeding device for a high-pressure roller press - Google Patents

Feeding device for a high-pressure roller press Download PDF

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Publication number
EP2560761B1
EP2560761B1 EP11708467.3A EP11708467A EP2560761B1 EP 2560761 B1 EP2560761 B1 EP 2560761B1 EP 11708467 A EP11708467 A EP 11708467A EP 2560761 B1 EP2560761 B1 EP 2560761B1
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EP
European Patent Office
Prior art keywords
chute
feeding device
overflow
nip
pressure roller
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Not-in-force
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EP11708467.3A
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German (de)
French (fr)
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EP2560761B2 (en
EP2560761A1 (en
Inventor
Siegfried Strasser
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KHD Humboldt Wedag AG
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KHD Humboldt Wedag AG
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/286—Feeding devices

Definitions

  • the invention relates to a feeding device for a high-pressure roller press for Hockdruckzerkleintation of ground material, which controls the material to be ground in a nip between two rollers of the high-pressure roller press gives up.
  • the nip is wider than the largest extent of the comminuted material to be ground. It is necessary to feed the nip with millbase so that a certain amount of the ground material can continuously pass through the nip. Because the nip is loaded with too little amount of ground material per unit of time, so in extreme cases, the ground material is no longer crushed or the high-pressure roller press acts like a crusher. If, however, too large amount of ground material on the nip given, the high-pressure roller press can be overloaded with the result that it begins to vibrate.
  • the amount of material dispensed has a significant influence on the desired smooth running of the high-pressure roller press.
  • the metering function of the feeder over the nip has been steadily improved.
  • the intake behavior is also influenced by the material bed in the room above the rollers.
  • Bulk material (bulk) is an accumulation or volume of Mahlgutmenge in the space above the compaction zone to understand.
  • the optimum material fill is determined by the parameters grain size of the material to be ground, humidity and the angle of repose.
  • the object of the invention is therefore to provide a feeding device with which the level of the ground material can be better controlled.
  • the feed device according to the invention for a high-pressure roller press for high-pressure comminution of millbase which gives the millbase controlled in a nip between two rollers of the high-pressure roller press, and at least one material task with a vertically adjustable material chute, is characterized in that the feeding device has a material overflow device.
  • the feeder is arranged on a support device on the machine frame of the high-pressure roller press.
  • the material task is designed as a funnel-like housing with a guide for a material slide.
  • the material feed is arranged centrally over a part of the rolls and the nip. On the one hand, it serves to guide the material to be ground along a material feed area on the rolls up to the nip and on the other hand also as a dust collector. Dedusting lines are provided for this purpose.
  • the material chute is guided in a guide of the material task.
  • the height-adjustable material chute which is guided in the material task, enables the setting of a material bed.
  • the material chute is formed at least from a chute with a material inlet and a material outlet, the chute is guided in a guide of the material feed and the material chute is vertically adjustable via an adjusting device above the roll gap.
  • the material chute can be adjusted in height via a hydraulic device, wherein the hydraulic device with the support device and the shaft of the material chute is in communication and engages the shaft.
  • Another preferred embodiment of the invention provides that the material chute is arranged in the material feed such that the material to be ground can be dispensed centrally above the nip onto the rolls of the high-pressure roller press.
  • material chute within the feeder is arranged so that the shaft or material inlet and material outlet are each centrally above the nip and the shaft can be adjusted centrally above this in height. This ensures a uniform task of the ground material.
  • the material chute is vertically adjustable such that the material outlet from an upper position to a lower position and vice versa is movable.
  • the material bed is the amount of material that is deposited on the rollers over a certain area, the material feed area.
  • Under free bed of material or free Mahlgut thoroughlyung is a loose accumulation or volume of a quantity of material or the ground material to be understood, which forms in the space above the Kompaktzone to the material outlet of the material slide.
  • the aggregate may ideally assume a frustoconical shape.
  • a further preferred embodiment of the invention provides that when the material outlet is in the upper position, a maximum free bulk of material is formed.
  • the material chute can be adjusted in height continuously above the nip via the adjusting device. The highest adjustment is achieved when the material exit a position II above the nip occupies. The lowest adjustment is marked by the position I. Here is the material outlet directly between the rollers.
  • the free material fill can be regulated as a function of the height of the material chute which can be adjusted via the adjusting device.
  • the free bulk material decreases as the material chute is driven down towards the nip and approaches zero when the material chute is moved to position I.
  • a next preferred embodiment of the invention provides that in the position of the material outlet in the lower position no free material bed forms.
  • a further preferred embodiment of the invention provides that the Mahlgutüberlauf issued is formed of a first overflow chute and a second overflow chute, wherein the overflow chutes are fixed or detachably arranged on the material task or on the material chute.
  • the task device has for continuous refilling with regrind and the control of the level of nachmetreden Ground material in the chute of the material chute, as well as in the material task itself, a Mahlgutüberlauf issued on.
  • Mahlgutüberlauf may provide two overflow chutes, which are preferably fixed or detachably mounted respectively on the opposite shaft walls of the material chute.
  • the overflow chutes may be tubular and preferably extend to about the height of the nip.
  • overflow chutes are firmly connected to the material task. In this case it is achieved that a Mahlgutübermoor during height adjustment of the material chute is possible.
  • the overflow chutes are adjustably arranged on the material chute.
  • the possibility of adjusting the material chute and the overflow chutes causes a defined free bulk of material above the rollers and a defined material play gel in the chute of the material chute are adjustable.
  • a next preferred embodiment of the invention is characterized in that openings are provided on the material chute, through which overflowing ground material passes into the overflow chutes and the ground material can be guided via the overflow chutes into a material circulation system connected thereto.
  • overflow chutes are attached to the chute of the material chute, there are corresponding openings at the chute, through which the material to be ground can overflow and pass into a material circulation system connected to the overflow chutes.
  • the overflow quantity can be measured and controlled by suitable measuring devices on the overflow chutes.
  • FIG. 1 a high-pressure roller press 100 with a feed device 20 according to the invention is shown.
  • the feeding device 20 has a funnel-shaped material feed 30 with a material chute 40.
  • the material chute 40 in turn consists of a shaft 41 with a material inlet 42 and a material outlet 43.
  • the material chute 40 is guided in the material task 30 via a guide 50.
  • the material chute 40 is arranged centrally in the material task 30 and centrally above the nip 11.
  • In the chute 41 of the material chute 40 is Ground material 10 out, which is fed via a material outlet 43 on the rollers 101, 102 in the vicinity of the nip 11.
  • the material outlet 43 of the material chute 40 is located in FIG. 1 in a lower position I above the nip 11, directly between the rollers 101, 102.
  • the angle ⁇ predetermines the angle of repose. This characterizes a material feed area 90 between the roll gap 11 and the largest extent of the ground material 10 fed onto the rolls 101, 102.
  • the angle of repose ⁇ is between 15 ° and 30 °, preferably 20 °, when the material chute 40 is in position I. When adjusting the material outlet 43 in position I, no free material bed 25 forms over the rollers 101, 102.
  • FIG. 2 Position II marks the highest vertical displacement of the material chute 40.
  • the angle of repose ⁇ is at position of the material outlet 43 in position II between 50 ° and 70 ° , preferably 60 °. It can be seen in FIG. 2 in that a free material fill 25 has formed in the space above the nip 11 and the material outlet 43.
  • the free material bed 25 can be adjusted and regulated by vertical adjustment of the material outlet 43 in the direction of nip 11 as needed.
  • FIG. 3 is the high pressure roller press 100 after FIG. 2 shown in side view. Evident are attached to the material task 30 dedusting 80.
  • FIG. 4 forms the high-pressure roller press 100 with inventive task device 20 with material task 30 and material chute 40 from, as it is attached to a support device 70 on a - not shown - machine frame.
  • inventive task device 20 with material task 30 and material chute 40 from, as it is attached to a support device 70 on a - not shown - machine frame.
  • evident is an attached to the material chute 40 overflow chute 61, 62 a Mahlgutüberlauf vibration 60 and an adjusting device 51 for the material chute 40th
  • the high-pressure roller press 100 is after FIG. 4 shown in side view.
  • the overflow chutes extend approximately up to the height of the nip 11.
  • Overflowing material to be ground 10 is passed through openings 45, 46 on the material chute 40 in the overflow chutes 61, 62. Die Studentslaufrisonen 61, 62 °. and in a (not shown) material circulation system at the level of the nip 11 discharged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Press Drives And Press Lines (AREA)
  • Chutes (AREA)

Description

Die Erfindung betrifft eine Aufgabevorrichtung für eine Hochdruckrollenpresse zur Hockdruckzerkleinerung von Mahlgut, welche das Mahlgut kontrolliert in einen Walzenspalt zwischen zwei Walzen der Hochdruckrollenpresse aufgibt.The invention relates to a feeding device for a high-pressure roller press for Hockdruckzerkleinerung of ground material, which controls the material to be ground in a nip between two rollers of the high-pressure roller press gives up.

Für die Zerkleinerung von sprödem Mahlgut wurde 1977 von Schönert in der Schrift DE 27 08 053 vorgeschlagen, das Mahlgut nicht klassisch zu zermahlen, sondern dieses in einem ersten Verfahrensschritt durch Hochdruckbeanspruchung in einem Walzenspalt zu sogenannten Schülpen zu pressen, wobei das Gefüge des Mahlgutes zerbricht und dadurch in viele kleine Bruchstücke zerteilt wird. Die Schülpen werden in einem weiteren Schritt in ihre Einzelbestandteile zerlegt. Das Pressen unter hohem Druck im Walzenspalt und das anschließende Desagglomerieren der verpressten Schülpen beansprucht weniger Energie als das herkömmliche Mählverfahren, bei dem die Zerkleinerung durch Scheren oder Reiben passiert. Mit der Zerkleinerung von Mahlgut mittels Hochdruckbeanspruchung in einem Walzenspalt werden hohe Mahlfeinheiten erreicht, wenn ein entsprechender Umlauf des Mahlgutes gewährleistet ist.For the comminution of brittle grinding material was in 1977 by Schönert in the Scriptures DE 27 08 053 proposed not to grind the ground stock classic, but to press this in a first step by high pressure in a nip to so-called slugs, the structure of the ground material breaks and thereby divided into many small fragments. The slugs are decomposed in a further step into their individual components. Pressing under high pressure in the nip and then deagglomerating the compressed slugs requires less energy than the conventional malting process in which comminution occurs by shearing or rubbing. With the comminution of material to be ground by high-pressure loading in a nip high Mahlfeinheiten be achieved if a corresponding circulation of the ground material is guaranteed.

Der Walzenspalt ist breiter als die größte Ausdehnung des zerkleinerten Mahlgutes. Es ist erforderlich, den Walzenspalt so mit Mahlgut zu beschicken, dass kontinuierlich eine bestimmte Menge des Mahlgutes den Walzenspalt passieren kann. Denn wird der Walzenspalt mit einer zu geringen Menge Mahlgut pro Zeiteinheit beschickt, so wird im Extremfall das Mahlgut nicht mehr zerkleinert oder die Hochdruckrollenpresse wirkt ähnlich einem Brecher. Wird hingegen eine zu große Menge Mahlgut auf den Walzenspalt gegeben, kann die Hochdruckrollenpresse überlastet werden mit der Folge, dass sie zu vibrieren anfängt. Bei der Vibration vergrößert und verkleinert sich der Walzenspalt in Resonanzfrequenz und auch die Umlaufgeschwindigkeit variiert mit Resonanzfrequenz, da bei einer Überlastung die Walzen wiederkehrend durch das in zu hohem Maße vorhandene Mahlgut gebremst und durch die Antriebsmotoren wieder beschleunigt werden. Daher ist bei der Hochdruckzerkleinerung im Walzenspalt dafür Sorge zu tragen, dass der Walzenspalt in geeignetem Maße mit Mahlgut beaufschlagt wird.The nip is wider than the largest extent of the comminuted material to be ground. It is necessary to feed the nip with millbase so that a certain amount of the ground material can continuously pass through the nip. Because the nip is loaded with too little amount of ground material per unit of time, so in extreme cases, the ground material is no longer crushed or the high-pressure roller press acts like a crusher. If, however, too large amount of ground material on the nip given, the high-pressure roller press can be overloaded with the result that it begins to vibrate. During vibration, the nip increases and decreases in resonant frequency and the rotational speed varies with resonant frequency, since in an overload, the rollers are repeatedly braked by the existing too large ground material and accelerated by the drive motors again. Therefore, in the high-pressure crushing in the nip is to ensure that the nip is applied to a suitable extent with millbase.

Die Aufgabemenge hängt stark von der Beschaffenheit des Mahlgutes ab. Die hierbei zu beachtenden Parameter sind die Korngrößenverteilung, die mittlere Korngröße und die Gleichmäßigkeit des zur Verfügung stehenden Mahlgutstromes auf den Walzenspalt. Das Mahlgut sollte gleichmäßig von oben in den Walzenspalt geführt werden.The amount of feed depends heavily on the nature of the material to be ground. The parameters to be considered here are the particle size distribution, the average particle size and the uniformity of the available ground material flow onto the nip. The material to be ground should be fed evenly from above into the nip.

Die aufgegebene Materialmenge hat wesentlichen Einfluss auf den angestrebten ruhigen Lauf der Hochdruckrollenpresse. Zur Verbesserung der Einzugsverhältnisse und um eine gleichmäßige Verteilung der Antriebsleistung auf die Antriebsmotoren der Hochdruckrollerpresse zu sichern, wurde die Dosier-Funktion der Aufgabevorrichtung über dem Walzenspalt stetig verbessert.The amount of material dispensed has a significant influence on the desired smooth running of the high-pressure roller press. To improve the intake conditions and to ensure a uniform distribution of the drive power to the drive motors of the high-pressure roller press, the metering function of the feeder over the nip has been steadily improved.

Im Stand der Technik sind Aufgabevorrichtungen bekannt, die den gleichmäßigen Zufluss des Mahlgutes regeln.In the prior art feeding devices are known which regulate the uniform inflow of the ground material.

So offenbart die Schrift WO 2010/003850 eine Aufgabevorrichtung gemäß dem Oberbegriff des Anspruchs 1, mit der das Mahlgut kontrolliert in den Walzenspalt zwischen zwei Walzen geführt wird, wobei die Aufgabevorrichtung mindestens zwei Drehschieber aufweist, durch welche bei symmetrischer Stellung eine bestimmte mittlere Gesamtmenge pro Zeiteinheit auf die Hochdruckrollerpressen aufgegeben werden kann. DE-3742083-A offenbart auch eine Aufgabevorrichtung gemäß dem Oberbegriff des Anspruchs 1.This is how the Scripture reveals WO 2010/003850 a feeder according to the preamble of claim 1, with which the material to be ground is controlled in the nip between two rollers, wherein the feeding device has at least two rotary valves, through which at symmetrical position, a certain average Total amount per unit time can be placed on the high-pressure roller presses. DE-3742083-A also discloses a feeding device according to the preamble of claim 1.

Das Einzugsverhalten wird ebenso von der Materialschüttung im Raum über den Walzen beeinflusst. Unter Materialschüttung (Schüttmenge) ist eine Anhäufung bzw. ein Volumen einer Mahlgutmenge im Raum oberhalb der Kompaktionszone zu verstehen. Die optimale Materialschüttung wird durch die Parameter Korngröße des Mahlgutes, Feuchte und den Schüttwinkel bestimmt.The intake behavior is also influenced by the material bed in the room above the rollers. Bulk material (bulk) is an accumulation or volume of Mahlgutmenge in the space above the compaction zone to understand. The optimum material fill is determined by the parameters grain size of the material to be ground, humidity and the angle of repose.

Es besteht ein Bedürfnis dafür, eine optimale Materialschüttung auf den Walzen einstellen zu können.There is a need to be able to set an optimal material bed on the rollers.

Aufgabe der Erfindung ist es daher, eine Aufgabevorrichtung anzugeben, mit der der Füllstand des Mahlgutes besser kontrolliert werden kann.The object of the invention is therefore to provide a feeding device with which the level of the ground material can be better controlled.

Die Aufgabe wird mit einer Aufgabevorrichtung mit den Merkmalen des Anspruches 1 gelöst.The object is achieved with a feeding device with the features of claim 1.

Die erfindungsgemäße Aufgabevorrichtung für eine Hochdruckrollenpresse zur Hochdruckzerkleinerung von Mahlgut, welche das Mahlgut kontrolliert in einen Walzenspalt zwischen zwei Walzen der Hochdruckrollenpresse aufgibt, und wenigtens eine Materialaufgabe mit einer vertikal verstellbaren Materialrutsche aufweist, ist dadurch gekennzeichnet, dass die Aufgabevorrichtung eine Materialüberlaufeinrichtung aufweist.The feed device according to the invention for a high-pressure roller press for high-pressure comminution of millbase, which gives the millbase controlled in a nip between two rollers of the high-pressure roller press, and at least one material task with a vertically adjustable material chute, is characterized in that the feeding device has a material overflow device.

Weitere vorteilhafte Ausgestaltungen der erfindungsgemäßen Aufgabevorrichtung sind in den Unteransprüchen angegeben.Further advantageous embodiments of the feeding device according to the invention are specified in the subclaims.

Mit der erfindungsgemäßen Aufgabevorrichtung lässt sich eine definierbare Materialschüttung im Raum zwischen Walzenspalt und der Materialrutsche einstellen.With the loading device according to the invention, a definable material bed in the space between the nip and the material chute can be adjusted.

Die Aufgabevorrichtung ist an einer Stützvorrichtung am Maschinenrahmen der Hochdruckrollenpresse angeordnet. Die Materialaufgabe ist als trichterartiges Gehäuse mit einer Führung für eine Materialrutsche ausgebildet. Die Materialaufgabe ist mittig über einen Teil der Walzen und dem Walzenspalt angeordnet. Sie dient einerseits der Führung des zu mahlenden Materials entlang eines Materialbeschickungsbereiches auf den Walzen bis hin zum Walzenspalt und andererseits auch als Staubsammler. Zu diesem Zweck sind Entstaubungsleitungen vorgesehen. Die Materialrutsche wird in einer Führung der Materialaufgabe geführt.The feeder is arranged on a support device on the machine frame of the high-pressure roller press. The material task is designed as a funnel-like housing with a guide for a material slide. The material feed is arranged centrally over a part of the rolls and the nip. On the one hand, it serves to guide the material to be ground along a material feed area on the rolls up to the nip and on the other hand also as a dust collector. Dedusting lines are provided for this purpose. The material chute is guided in a guide of the material task.

Die in der Materialaufgabe geführte höhenverstellbare Materialrutsche, ermöglicht die Einstellung einer Materialschüttung.The height-adjustable material chute, which is guided in the material task, enables the setting of a material bed.

In einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, dass die Materialrutsche wenigstens aus einem Schacht mit einem Materialeinlass und einem Materialaustritt gebildet ist, der Schacht in einer Führung der Materialaufgabe geführt und die Materialrutsche über eine Verstelleinrichtung über dem Walzenspalt vertikal verstellbar ist.In a preferred embodiment of the invention, it is provided that the material chute is formed at least from a chute with a material inlet and a material outlet, the chute is guided in a guide of the material feed and the material chute is vertically adjustable via an adjusting device above the roll gap.

Die Materialrutsche besteht aus einem quaderförmigen Schacht, mit einer Öffnung für den Materialeinlass und einer Öffnung für den Materialaustritt. Der Schacht wird über die Führung in der Materialaufgabe geführt. Zur Höhenverstellung der Materialrutsche ist eine geeignete Verstelleinrichtung, beispielsweise eine Hydraulikeinrichtung, vorgesehen.The material chute consists of a cuboidal shaft, with an opening for the material inlet and an opening for the material outlet. The shaft is guided over the guide in the material task. For height adjustment of the material slide a suitable adjustment, such as a hydraulic device is provided.

Die Materialrutsche kann über ein Hydraulikeinrichtung höhenverstellt werden, wobei die Hydraulikeinrichtung mit der Stützvorrichtung und dem Schacht der Materialrutsche in Verbindung steht und am Schacht angreift. Eine andere bevorzugte Ausführung der Erfindung sieht vor, dass die Materialrutsche derart in der Materialaufgabe angeordnet ist, dass das Mahlgut mittig über dem Walzenspalt auf die Walzen der Hochdruckrollenpresse abgebbar ist.The material chute can be adjusted in height via a hydraulic device, wherein the hydraulic device with the support device and the shaft of the material chute is in communication and engages the shaft. Another preferred embodiment of the invention provides that the material chute is arranged in the material feed such that the material to be ground can be dispensed centrally above the nip onto the rolls of the high-pressure roller press.

Dazu ist Materialrutsche innerhalb der Aufgabevorrichtung so angeordnet, dass der Schacht bzw. Materialeinlass und Materialauslass jeweils mittig über dem Walzenspalt liegen und der Schacht mittig über diesem in der Höhe verstellt werden kann. Damit wird eine gleichmäßige Aufgabe des Mahlgutes gewährleistet.For this purpose, material chute within the feeder is arranged so that the shaft or material inlet and material outlet are each centrally above the nip and the shaft can be adjusted centrally above this in height. This ensures a uniform task of the ground material.

In einer nächsten bevorzugten Ausführungsform der Erfindung ist vorgesehen, dass die Materialrutsche derart vertikal verstellbar ist, dass der Materialaustritt von einer oberen Position bis zu einer unteren Position und umgekehrt verfahrbar ist.In a next preferred embodiment of the invention it is provided that the material chute is vertically adjustable such that the material outlet from an upper position to a lower position and vice versa is movable.

Die Materialschüttung ist die Materialmenge, die über einen bestimmten Bereich, den Materialbeschickungsbereich, auf den Walzen aufgegeben wird. Unter freier Materialschüttung oder freier Mahlgutschüttung ist eine lose Anhäufung bzw. ein Volumen einer Materialmenge bzw. des Mahlgutes zu verstehen, das sich im Raum oberhalb der Kompaktionszone bis zum Materialaustritt der Materialrutsche ausbildet. Die Anhäufung kann im Idealfall eine kegelstumpfartige Form annehmen.The material bed is the amount of material that is deposited on the rollers over a certain area, the material feed area. Under free bed of material or free Mahlgutschüttung is a loose accumulation or volume of a quantity of material or the ground material to be understood, which forms in the space above the Kompaktzone to the material outlet of the material slide. The aggregate may ideally assume a frustoconical shape.

Eine weitere bevorzugte Ausführungsform der Erfindung sieht vor, dass sich bei Stellung des Materialaustrittes in der oberen Position eine höchste freie Materialschüttung ausbildet.A further preferred embodiment of the invention provides that when the material outlet is in the upper position, a maximum free bulk of material is formed.

Die Materialrutsche kann stufenlos oberhalb des Walzenspaltes über die Verstelleinrichtung höhenverstellt werden. Die höchste Verstellung ist erreicht, wenn der Materialaustritt eine Position II über dem Walzenspalt einnimmt. Die niedrigste Verstellung wird durch die Position I markiert. Hier befindet sich der Materialaustritt direkt zwischen den Walzen.The material chute can be adjusted in height continuously above the nip via the adjusting device. The highest adjustment is achieved when the material exit a position II above the nip occupies. The lowest adjustment is marked by the position I. Here is the material outlet directly between the rollers.

Wird die Materialrutsche in ihre höchste Verstellposition über dem Walzenspalt gefahren, bildet sich im Raum über dem Walzenspalt und dem Materialaustritt eine höchste freie Materialschüttung aus. In dieser Position ist die größtmögliche Materialbeschickung auf den Walzen erreichbar.If the material slide is moved to its highest adjustment position above the nip, a maximum free bulk of material forms in the space above the nip and the material outlet. In this position, the largest possible material loading on the rollers can be achieved.

Die freie Materialschüttung lässt sich erfindungsgemäß in Abhängigkeit von der über die Verstelleinrichtung einstellbaren Höhe der Materialrutsche regulieren. Die freie Materialschüttung verringert sich, wenn die Materialrutsche in Richtung Walzenspalt nach unten gefahren wird und geht gegen Null, wenn die Materialrutsche in Position I gefahren wird.According to the invention, the free material fill can be regulated as a function of the height of the material chute which can be adjusted via the adjusting device. The free bulk material decreases as the material chute is driven down towards the nip and approaches zero when the material chute is moved to position I.

Eine nächste bevorzugte Ausführungsform der Erfindung sieht vor, dass sich bei Stellung des Materialaustrittes in der unteren Position keine freie Materialschüttung ausbildet.A next preferred embodiment of the invention provides that in the position of the material outlet in the lower position no free material bed forms.

Wird hingegen die Materialrutsche in ihre niedrigste Verstellposition gefahren, kann sich keine freie Materialschüttung im Raum über dem Walzenspalt und dem Materialaustritt der Materialrutsche bilden. Das Mahlgut gelangt über die Materialrutsche direkt in die Kompaktionszone und in den Walzenspalt. Auf die Walzen wird die kleinste Materialmenge aufgegeben.If, on the other hand, the material chute is moved to its lowest adjustment position, no free bulk material can form in the space above the nip and the material outlet of the material chute. The material passes through the material chute directly into the compaction zone and into the nip. On the rollers, the smallest amount of material is given up.

Eine weitere bevorzugte Ausführungsform der Erfindung sieht vor, dass die Mahlgutüberlaufeinrichtung aus einer ersten Überlaufrutsche und einer zweiten Überlaufrutsche gebildet ist, wobei die Überlaufrutschen an der Materialaufgabe oder an der Materialrutsche fest oder lösbar angeordnet sind.A further preferred embodiment of the invention provides that the Mahlgutüberlaufeinrichtung is formed of a first overflow chute and a second overflow chute, wherein the overflow chutes are fixed or detachably arranged on the material task or on the material chute.

Die erfindungsgemäße Aufgabenvorrichtung weist zur kontinuierlichen Nachbefüllung mit Mahlgut und der Kontrolle des Füllstandes des nachzugebenden Mahlgutes im Schacht der Materialrutsche, wie auch in der Materialaufgabe selbst, eine Mahlgutüberlaufeinrichtung auf. Die Mahlgutüberlaufeinrichtung kann zwei Überlaufrutschen vorsehen, welche vorzugsweise jeweils an den gegenüberliegenden Schachtwänden der Materialrutsche fest oder wiederlösbar angebracht sind. Die Überlaufrutschen können röhrenartig ausgebildet sein und vorzugsweise bis etwa in Höhe zum Walzenspalt reichen.The task device according to the invention has for continuous refilling with regrind and the control of the level of nachgebenden Ground material in the chute of the material chute, as well as in the material task itself, a Mahlgutüberlaufeinrichtung on. The Mahlgutüberlaufeinrichtung may provide two overflow chutes, which are preferably fixed or detachably mounted respectively on the opposite shaft walls of the material chute. The overflow chutes may be tubular and preferably extend to about the height of the nip.

Möglich ist ferner, dass die Überlaufrutschen fest mit der Materialaufgabe verbunden sind. In diesem Fall wird erreicht, dass ein Mahlgutüberlauf während der Höhenverstellung der Materialrutsche möglich ist.It is also possible that the overflow chutes are firmly connected to the material task. In this case it is achieved that a Mahlgutüberlauf during height adjustment of the material chute is possible.

In einer bevorzugten Ausführung der Erfindung sind die Überlaufrutschen verstellbar an der Materialrutsche angeordnet. Die Möglichkeit der Verstellung der Materialrutsche und der Überlaufrutschen bewirkt, dass eine definierte freie Materialschüttung über den Walzen und ein definierter Materialspielgel im Schacht der Materialrutsche einstellbar sind.In a preferred embodiment of the invention, the overflow chutes are adjustably arranged on the material chute. The possibility of adjusting the material chute and the overflow chutes causes a defined free bulk of material above the rollers and a defined material play gel in the chute of the material chute are adjustable.

Eine nächste bevorzugte Ausführungsform der Erfindung ist dadurch gekennzeichnet, dass an der Materialrutsche Öffnungen vorgesehen sind, durch die überlaufendes Mahlgut in die Überlaufrutschen gelangt und das Mahlgut über die Überlaufrutschen in ein mit diesem verbundenes Materialumlaufsystem führbar ist.A next preferred embodiment of the invention is characterized in that openings are provided on the material chute, through which overflowing ground material passes into the overflow chutes and the ground material can be guided via the overflow chutes into a material circulation system connected thereto.

In dem Fall, dass die Überlaufrutschen am Schacht der Materialrutsche angebracht sind, befinden sich am Schacht entsprechende Öffnungen, durch die Mahlgut überlaufen und in ein mit den Überlaufrutschen verbundenes Materialumlaufsystem gelangen kann.In the event that the overflow chutes are attached to the chute of the material chute, there are corresponding openings at the chute, through which the material to be ground can overflow and pass into a material circulation system connected to the overflow chutes.

Die Überlaufmenge kann durch geeignete Messeinrichtungen an den Überlaufrutschen gemessen und kontrolliert werden.The overflow quantity can be measured and controlled by suitable measuring devices on the overflow chutes.

Die Erfindung wird im Folgenden anhand von Zeichnungen näher erläutert.The invention will be explained in more detail below with reference to drawings.

Es zeigen

Figur 1
eine vereinfachte schematische Darstellung einer Hochdruckrollenpresse mit einer Aufgabevorrichtung bei Stellung der Materialrutsche in Position I,
Figur 2
eine vereinfachte schematische Darstellung der Hochdruckrollenpresse mit einer Aufgabevorrichtung bei Stellung der Materialrutsche In Position II,
Figur 3
die schematische Darstellung der Hochdruckrollenpresse nach Fig. 2 in Seitenansicht,
Figur 4
eine weitere vereinfachte schematische Darstellung der Hochdruckrollenpresse mit der erfindungsgemäßen Aufgabevorrichtung und
Figur 5
die vereinfachte schematische Schnittdarstellung der Hochdruckrollenpresse nach Figur 4 in Seitenansicht.
Show it
FIG. 1
a simplified schematic representation of a high-pressure roller press with a feeding device in position of the material slide in position I,
FIG. 2
a simplified schematic representation of the high-pressure roller press with a feeding device when the material slide position In position II,
FIG. 3
the schematic representation of the high-pressure roller press after Fig. 2 in side view,
FIG. 4
a further simplified schematic representation of the high-pressure roller press with the feed device according to the invention and
FIG. 5
the simplified schematic sectional view of the high-pressure roller press after FIG. 4 in side view.

In Figur 1 ist eine Hochdruckrollenpresse 100 mit einer erfindungsgemäβen Aufgabevorrichtung 20 abgebildet. Die Aufgabevorrichtung 20 weist eine trichterförmige Materialaufgabe 30 mit einer Materialrutsche 40 auf. Die Materialrutsche 40 ihrerseits besteht aus einem Schacht 41 mit einem Materialeinlass 42 und einem Materialauslass 43. Die Materialrutsche 40 wird in der Materialaufgabe 30 über eine Führung 50 geführt. Die Materialrutsche 40 ist mittig in der Materialaufgabe 30 und mittig oberhalb des Walzenspaltes 11 angeordnet. Im Schacht 41 der Materialrutsche 40 wird Mahlgut 10 geführt, welches über einen Materialaustritt 43 auf die Walzen 101, 102 in Nähe des Walzenspaltes 11 aufgegeben wird.In FIG. 1 1, a high-pressure roller press 100 with a feed device 20 according to the invention is shown. The feeding device 20 has a funnel-shaped material feed 30 with a material chute 40. The material chute 40 in turn consists of a shaft 41 with a material inlet 42 and a material outlet 43. The material chute 40 is guided in the material task 30 via a guide 50. The material chute 40 is arranged centrally in the material task 30 and centrally above the nip 11. In the chute 41 of the material chute 40 is Ground material 10 out, which is fed via a material outlet 43 on the rollers 101, 102 in the vicinity of the nip 11.

Der Materialaustritt 43 der Materialrutsche 40 befindet sich in Figur 1 in einer unteren Position I über dem Walzenspalt 11, direkt zwischen den Walzen 101, 102.The material outlet 43 of the material chute 40 is located in FIG. 1 in a lower position I above the nip 11, directly between the rollers 101, 102.

Der Winkel α gibt den Schüttwinkel vor. Dieser kennzeichnet einen Materialbeschickungsbereich 90 zwischen dem Walzenpalt 11 und der größten Ausdehnung des auf die Walzen 101, 102 aufgegebenen Mahlgutes 10. Der Schüttwinkel α beträgt bei Stellung der Materialrutsche 40 in Position I zwischen 15° und 30°, vorzugsweise 20°. Bei Einstellung des Materialaustrittes 43 in Position I bildet sich keine freie Materialschüttung 25 über den Walzen 101, 102 aus.The angle α predetermines the angle of repose. This characterizes a material feed area 90 between the roll gap 11 and the largest extent of the ground material 10 fed onto the rolls 101, 102. The angle of repose α is between 15 ° and 30 °, preferably 20 °, when the material chute 40 is in position I. When adjusting the material outlet 43 in position I, no free material bed 25 forms over the rollers 101, 102.

Figur 2 zeigt die Hochdruckrollenpresse 100 mit der erfindungsgemäßen Aufgabevorrichtung 20 bei Stellung des Materialaustrittes 43 der Materialrutsche 40 in Position II. Position II markiert die höchste vertikale Verstellung der Materialrutsche 40. Der Schüttwinkel α beträgt bei Stellung des Materialaustrittes 43 in Position II zwischen 50° und 70°, vorzugsweise 60°. Zu erkennen ist in Figur 2, dass sich im Raum über dem Walzenspalt 11 und dem Materialaustritt 43 eine freie Materialschüttung 25 ausgebildet hat. Die freie Materialschüttung 25 lässt sich durch vertikale Verstellung des Materialaustrittes 43 in Richtung Walzenspalt 11 nach Bedarf einstellen und regulieren. FIG. 2 Position II marks the highest vertical displacement of the material chute 40. The angle of repose α is at position of the material outlet 43 in position II between 50 ° and 70 ° , preferably 60 °. It can be seen in FIG. 2 in that a free material fill 25 has formed in the space above the nip 11 and the material outlet 43. The free material bed 25 can be adjusted and regulated by vertical adjustment of the material outlet 43 in the direction of nip 11 as needed.

In Figur 3 ist die Hochdruckrollenpresse 100 nach Figur 2 in Seitenansicht abgebildet. Zu erkennen sind die an der Materialaufgabe 30 angebrachten Entstaubungsleitungen 80.In FIG. 3 is the high pressure roller press 100 after FIG. 2 shown in side view. Evident are attached to the material task 30 dedusting 80.

Figur 4 bildet die Hochdruckrollenpresse 100 mit erfindungsgemäßer Aufgabevorrichtung 20 mit Materialaufgabe 30 und Materialrutsche 40 ab, wie sie an einer Stützvorrichtung 70 an einem - nicht dargestellten - Maschinenrahmen befestigt ist. Zu erkennen ist eine an der Materialrutsche 40 angebrachte Überlaufrutsche 61, 62 einer Mahlgutüberlaufeinrichtung 60 und eine Verstelleinrichtung 51 für die Materialrutsche 40. FIG. 4 forms the high-pressure roller press 100 with inventive task device 20 with material task 30 and material chute 40 from, as it is attached to a support device 70 on a - not shown - machine frame. Evident is an attached to the material chute 40 overflow chute 61, 62 a Mahlgutüberlaufeinrichtung 60 and an adjusting device 51 for the material chute 40th

In Figur 5 wird die Hochdruckrollenpresse 100 nach Figur 4 in Seitenansicht dargestellt. Zu erkennen ist hier die Anordnung der Überlaufrutschen 61, 62 am Schacht 41 der Materialrutsche 40. Die Überlaufrutschen reichen in etwa bis zur Höhe des Walzenspaltes 11. Überlaufendes Mahlgut 10 wird über Öffnungen 45, 46 an der Materialrutsche 40 in die Überlaufrutschen 61, 62 geleitet und in ein (nicht dargestelltes) Materialumlaufsystem in Höhe des Walzenspaltes 11 abgeführt. BEZUGSZEICHENLISTE 10 Mahlgut 62 zweite Überlaufrutsche 11 Walzenspalt 70 Stützvorrichtung 20 Aufgabevorrichtung 80 Entstaubungsleitung 25 freie Materialschüttung, freier Mahlgutschüttkegel 85 Anschluss für Entstaubungsleitung 30 Materialaufgabe 90 Materialbeschickungsbereich 40 Materialrutsche 41 Schacht 100 Hochdruckrollenpresse 42 Materialeinlass 101 Walze 43 Materialaustritt 102 Walze 45 Öffnung 46 Öffnung II obere Position des Materialaustrittes 50 Führung 51 Verstelleinrichtung I untere Position des Materialaustrittes 60 Mahlgutüberlaufeinrichtung α Schüttwinkel 61 erste Überlaufrutsche In FIG. 5 The high-pressure roller press 100 is after FIG. 4 shown in side view. The overflow chutes extend approximately up to the height of the nip 11. Overflowing material to be ground 10 is passed through openings 45, 46 on the material chute 40 in the overflow chutes 61, 62. Die Überlaufrutschen 61, 62 bzw. and in a (not shown) material circulation system at the level of the nip 11 discharged. LIST OF REFERENCE NUMBERS 10 grist 62 second overflow chute 11 nip 70 support device 20 feeder 80 Entstaubungsleitung 25 free material bed, free regrind cone 85 Connection for dedusting line 30 material feed 90 Material loading area 40 material chute 41 shaft 100 High-pressure roller press 42 material inlet 101 roller 43 material outlet 102 roller 45 opening 46 opening II upper position of the material outlet 50 guide 51 adjustment I lower position of the material outlet 60 Mahlgutüberlaufeinrichtung α angle of repose 61 first overflow chute

Claims (11)

  1. Feeding device (20) for a high-pressure roller press (100) for the high-pressure comminution of grinding stock (10), which device feeds the grinding stock (10) in a controlled manner into a roller nip (11) between two rollers (101, 102) of the high-pressure roller press (100), the feeding device (20) having at least one material feed (30) with a vertically adjustable material chute (40), characterized in that the feeding device (20) has a material overflow arrangement (60).
  2. Feeding device (20) according to Claim 1, characterized in that the material feed (30) is formed from a funnel-like housing which has a guide (50) for a material chute (40).
  3. Feeding device (20) according to Claim 1, characterized in that the material chute (40) is formed at least from a shaft (41) with a material inlet (42) and with a material outlet (43), the shaft (41) is guided in a guide (50) in the material feed (30), and the material chute (40) is adjustable vertically above the roller nip (11) via an adjusting arrangement (51).
  4. Feeding device (20) according to Claim 1 or 2, characterized in that the material chute (40) is disposed vertically adjustably in the material feed (30) in such a way that the grinding stock (10) can be dispensed to the rollers (101, 102) centrally above the roller nip (11).
  5. Feeding device (20) according to Claims 1 to 3, characterized in that a predeterminable free material heap (25) can be set via a vertical adjustment of the material outlet (43) of the material chute (40).
  6. Feeding device (20) according to Claim 4, characterized in that the material chute (40) is vertically adjustable in such a way that the material outlet (43) can be moved from an upper position (II) as far as a lower position (I), and vice versa.
  7. Feeding device (20) according to Claim 5, characterized in that, when the material outlet (43) is set in the upper position (II) a maximum free material heap (25) is formed.
  8. Feeding device (20) according to Claim 5, characterized in that, when the material outlet (43) is set in the lower position (I), there is no free material heap (25) formed.
  9. Feeding device (20) according to one of Claims 1 to 7, characterized in that the material overflow arrangement (60) is formed from a first overflow chute (61) and a second overflow chute (62), the overflow chutes (61, 62) being disposed fixedly or releaseably on the material feed (30) or on the material chute (40).
  10. Feeding device (20) according to Claim 8, characterized in that the overflow chutes (61, 62) are disposed adjustably on the material chute (40).
  11. Feeding device (20) according to Claim 10, characterized in that the material chute (40) has provided on it orifices (45, 46), through which overflowing grinding stock (10) passes into the overflow chutes (61, 62), and the grinding stock (10) can be guided via the overflow chutes (61, 62) into a material circulation system connected thereto.
EP11708467.3A 2010-04-21 2011-03-16 Feeding device for a high-pressure roller press Not-in-force EP2560761B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202010005881U DE202010005881U1 (en) 2010-04-21 2010-04-21 Feeding device for a high-pressure roller press
PCT/EP2011/053933 WO2011131428A1 (en) 2010-04-21 2011-03-16 Feeding apparatus for a high-pressure roller press

Publications (3)

Publication Number Publication Date
EP2560761A1 EP2560761A1 (en) 2013-02-27
EP2560761B1 true EP2560761B1 (en) 2014-07-09
EP2560761B2 EP2560761B2 (en) 2017-09-20

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ID=42372204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11708467.3A Not-in-force EP2560761B2 (en) 2010-04-21 2011-03-16 Feeding device for a high-pressure roller press

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EP (1) EP2560761B2 (en)
CN (1) CN102740979B (en)
BR (1) BR112012017249A2 (en)
DE (1) DE202010005881U1 (en)
DK (1) DK2560761T4 (en)
WO (1) WO2011131428A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8708265B2 (en) 2012-04-20 2014-04-29 Metso Minerals Industries, Inc. Roller crusher with balancing cylinders
US8695907B2 (en) 2012-04-20 2014-04-15 Metso Minerals Industries, Inc. Roller crusher with cheek plates
CN103285991B (en) * 2013-05-14 2016-08-10 中信重工机械股份有限公司 A kind of mechanism of two-side automation regulation high-pressure roller mill charging

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1757093C3 (en) † 1968-03-29 1978-10-19 Alpine Ag, 8900 Augsburg Roller mill for fine grinding
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
DE3302176A1 (en) † 1983-01-24 1984-07-26 Klöckner-Humboldt-Deutz AG, 5000 Köln METHOD AND SYSTEM FOR CONTINUOUS PRESSURE REDUCTION OF SPROEDEN GROUND MATERIAL
DE3305339A1 (en) † 1983-02-17 1984-08-23 Klöckner-Humboldt-Deutz AG, 5000 Köln METHOD AND DEVICE FOR CONTINUOUS PRESSURE REDUCTION SPROEDEN GROSSGUTES
DE3742083A1 (en) * 1987-12-11 1989-06-22 Kloeckner Humboldt Deutz Ag Double-roll machine such as roll press
PE20110473A1 (en) 2008-07-09 2011-07-09 Khd Humboldt Wedag Gmbh CHARGING DEVICE WITH TWO VARIABLE ROTATING GATES IN MUTUALLY INDEPENDENT POSITION
CN201271588Y (en) * 2008-09-10 2009-07-15 无锡天山水泥有限公司 Feeding equipment of roll squeezer

Also Published As

Publication number Publication date
BR112012017249A2 (en) 2016-03-22
EP2560761B2 (en) 2017-09-20
EP2560761A1 (en) 2013-02-27
DK2560761T4 (en) 2018-01-02
WO2011131428A1 (en) 2011-10-27
CN102740979B (en) 2014-09-10
CN102740979A (en) 2012-10-17
DE202010005881U1 (en) 2010-07-29
DK2560761T3 (en) 2014-10-20

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