EP2081689A1 - Roller mill - Google Patents

Roller mill

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Publication number
EP2081689A1
EP2081689A1 EP07822380A EP07822380A EP2081689A1 EP 2081689 A1 EP2081689 A1 EP 2081689A1 EP 07822380 A EP07822380 A EP 07822380A EP 07822380 A EP07822380 A EP 07822380A EP 2081689 A1 EP2081689 A1 EP 2081689A1
Authority
EP
European Patent Office
Prior art keywords
power arm
roller
bearing
grinding
cylinder
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
EP07822380A
Other languages
German (de)
French (fr)
Other versions
EP2081689B1 (en
Inventor
Pedro Guerrero Palma
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Polysius AG
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 Polysius AG filed Critical Polysius AG
Publication of EP2081689A1 publication Critical patent/EP2081689A1/en
Application granted granted Critical
Publication of EP2081689B1 publication Critical patent/EP2081689B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/04—Mills with pressed pendularly-mounted rollers, e.g. spring pressed

Definitions

  • the invention relates to a roller mill with at least one grinding roller and a rotatable grinding plate.
  • roller mill From practice roller mill are known in a variety of configurations.
  • the grinding roller is fixed to one end of a rotatable shaft which is supported outside the mill in a spherical roller bearing.
  • a power arm is provided which is pivotally and rotatably supported in a bearing, wherein the grinding roller rotatably at one end of the
  • Power arm is stored. Further, means for applying a force to the power arm are provided to adjust the grinding pressure exerted by the grinding roller.
  • the means for exerting a force on the power arm are formed in many applications by spring elements. To be able to vary the grinding pressure better and to be able to set larger grinding pressures, however, many
  • Hydraulic cylinder used.
  • this hydraulic cylinder is formed by a pivotally mounted and articulated to the power arm pulling cylinder.
  • the invention is based on the object, a new construction for the
  • the roller mill according to the invention consists essentially of at least one grinding roller and a rotatable grinding table, which are arranged in a mill interior and a power arm, the pivotable and rotationally fixed in one
  • the grinding roller is rotatably mounted at one end of the power arm and further means for applying a force to the force arm are provided which comprise a pressure cylinder which is in operative contact with the force arm to adjust the grinding pressure exerted by the grinding roller.
  • a printing cylinder can be made smaller and more compact compared to a pull cylinder, whereby installation space is saved.
  • the pressure cylinder is arranged fixed.
  • a fixed cylinder is on the one hand more compact and reduces the moving masses of a reel unit, which has a favorable effect on the vibrations.
  • the printing cylinder is expediently aligned perpendicular to the connection between the bearing and the grinding roller, whereby an optimal power transmission is possible.
  • the printing cylinder is preferably arranged in a central region between the grinding roller and the bearing.
  • at least one pressure bearing is provided between the pressure cylinder and the power arm that allows a relative movement between the pressure cylinder and power arm.
  • This thrust bearing can in particular have a first and a second pressure surface for exerting a sliding movement, wherein the coefficient of friction is preferably less than 0.2.
  • a third and a fourth pressure surface are also provided for exercising a pivoting movement, thereby the
  • Fig. 3 is a partial sectional view in the region of the contact point at which the force of the printing cylinder is transmitted to the power arm.
  • the roller mill shown in Fig. 1 consists essentially of a grinding roller 1 and a rotatable grinding table 2, which in a limited by a housing 3
  • Mill interior 4 are arranged. Furthermore, a power arm 5 is provided, the pivotable and rotationally fixed in a lay as he trained camp. 6 is supported, wherein the grinding roller 1 is rotatably mounted at the opposite end of the power arm.
  • means for applying a force to the power arm 5 are provided to adjust the pressure exerted by the grinding roller.
  • This means include a
  • Pressure cylinder 7 which is fixedly arranged and approximately perpendicular to
  • the impression cylinder 7 is preferably formed by a plunger cylinder.
  • the pressure cylinder 7 acts in a central region between the grinding roller 1 and bearing 6 on the power arm 5.
  • the positions of bearing and pressure cylinder are reversed.
  • the power arm 5 is formed in a straight line in the illustrated embodiment, but also bent arms are considered in principle.
  • the bearing 6 is preferably formed by an axial spherical plain bearing, wherein in particular two mutually juxtaposed axial spherical plain bearings are used, which can be braced against each other, whereby the bearing clearance can be minimized.
  • the grinding roller 1 at the other end of the power arm 5 is mounted on two mounted in O-arrangement tapered roller bearing 9, wherein a
  • Lubricant space 10 of the tapered roller bearing 9 extends in a region outside the mill interior 4 and is sealed there.
  • the bearing 6 allows a tilting movement of the power arm 5 by an angle ⁇ . It comes thus to one
  • the thrust bearing is shown in more detail in Fig. 3 and has a first and a second pressure surface 10 a, 10 b for exerting a sliding movement, wherein a friction coefficient is less than 0.2 provided by suitable selection of the sliding pair.
  • a friction coefficient is less than 0.2 provided by suitable selection of the sliding pair.
  • FIG. 3 Sliding surface provided for exercising a pivoting movement. Again, the coefficient of friction can be minimized by suitable sliding mating.
  • Fig. 3 are shown by solid lines, the center position of the power arm and with dotted lines the two extreme positions of the power arm in conjunction with the thrust bearing.
  • the power transmission from the impression cylinder to the power arm can be done in a very compact manner.

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

Abstract

The invention relates to a roller mill comprising at least one grinding roller and a rotatable grinding plate, which are arranged in an inner space of the mill, and also a force arm which is held pivotably and in a rotationally fixed manner in a bearing, wherein the grinding roller is mounted such that it can rotate on an end of the force arm, and there are also provided means for exerting a force on the force arm that comprise a pressure cylinder which is in operative contact with the force arm, in order to adjust the grinding pressure exerted by the grinding roller. The contact point at which the force of the pressure cylinder is transmitted to the force arm is in this case situated outside the inner space of the mill.

Description

Rollenmühle roller mill
Die Erfindung betrifft eine Rollenmühle mit wenigstens eine Mahlrolle und einem rotierbaren Mahlteller.The invention relates to a roller mill with at least one grinding roller and a rotatable grinding plate.
Aus der Praxis sind Rollenmühle in den unterschiedlichsten Ausgestaltungen bekannt. Bei einer Ausführungsform ist die Mahlrolle an einem Ende einer drehbaren Welle befestigt, die außerhalb der Mühle in einem Pendelrollenlager gehaltert ist. In einer anderen Ausgestaltung ist ein Kraftarm vorgesehen, der schwenkbeweglich und drehfest in einem Lager gehaltert ist, wobei die Mahlrolle drehbar an einem Ende desFrom practice roller mill are known in a variety of configurations. In one embodiment, the grinding roller is fixed to one end of a rotatable shaft which is supported outside the mill in a spherical roller bearing. In another embodiment, a power arm is provided which is pivotally and rotatably supported in a bearing, wherein the grinding roller rotatably at one end of the
Kraftarms gelagert ist. Ferner sind Mittel zum Ausüben einer Kraft auf den Kraftarm vorgesehen, um den von der Mahlrolle ausgeübten Mahldruck einzustellen. Die Mittel zum Ausüben einer Kraft auf den Kraftarm werden in vielen Anwendungen durch Federelemente gebildet. Um den Mahldruck besser variieren zu können und auch größere Mahldrücke einstellen zu können, werden jedoch vielfachPower arm is stored. Further, means for applying a force to the power arm are provided to adjust the grinding pressure exerted by the grinding roller. The means for exerting a force on the power arm are formed in many applications by spring elements. To be able to vary the grinding pressure better and to be able to set larger grinding pressures, however, many
Hydraulikzylinder eingesetzt.Hydraulic cylinder used.
In der JP-A-2002159874 wird dieser Hydraulikzylinder durch einen gelenkig gelagerten und gelenkig mit dem Kraftarm verbundenen Zugzylinder gebildet.In JP-A-2002159874, this hydraulic cylinder is formed by a pivotally mounted and articulated to the power arm pulling cylinder.
Aus der JP-A-2000 312832 ist ferner eine Kohlemühle bekannt, bei welcher der Kraftarm mit einem Druckzylinder in Wirkverbindung steht, um den von der Mahlrolle ausgeübten Mahldruck einzustellen. Der Zylinder ist dabei feststehend an der Gehäusewandung montiert, sodass der Zylinderkolben in den Mühleninnenraum hineinragt und dort die Kraft über einen in einer Hülse geführten Stempel auf denFrom JP-A-2000 312832 there is further known a coal grinder in which the power arm is operatively connected to a pressure cylinder to adjust the grinding pressure exerted by the grinding roller. The cylinder is fixedly mounted on the housing wall, so that the cylinder piston protrudes into the mill interior and there the force via a guided in a sleeve punch on the
Kraftarm überträgt. Da der Kraftarm schwenkbeweglich gelagert ist, treten im Bereich der Kontaktstelle hohe Querkräfte auf, die von der Hülse aufgenommen werden müssen.Power arm transfers. Since the power arm is mounted pivotably, occur in the region of the contact point on high transverse forces that must be absorbed by the sleeve.
Die Erfindung liegt nun die Aufgabe zugrunde, eine neue Konstruktion für dieThe invention is based on the object, a new construction for the
Einleitung einer Kraft auf den Kraftarm zu finden. Erfϊndungsgemäß wird diese Aufgabe durch die Merkmale des Anspruches 1 gelöst.Introduction of a force to find the power arm. Erfϊndungsgemäß this object is achieved by the features of claim 1.
Die erfindungsgemäße Rollenmühle besteht im Wesentlichen aus wenigstens einer Mahlrolle und einem rotierbaren Mahlteller, die in einem Mühleninnenraum angeordnet sind sowie einem Kraftarm, der schwenkbeweglich und drehfest in einemThe roller mill according to the invention consists essentially of at least one grinding roller and a rotatable grinding table, which are arranged in a mill interior and a power arm, the pivotable and rotationally fixed in one
Lager gehaltert ist, wobei die Mahlrolle drehbar an einem Ende des Kraftarms gelagert ist und ferner Mittel zum Ausüben einer Kraft auf den Kraftarm vorgesehen sind, die einen Druckzylinder umfassen, der mit dem Kraftarm in Wirkkontakt steht, um den von der Mahlrolle ausgeübten Mahldruck einzustellen. Die Kontaktstelle, an der die Kraft des Druckzylinders auf den Kraftarm übertragen wird, befindet sich dabei außerhalb des Mühleninnenraums.Bearing is mounted, wherein the grinding roller is rotatably mounted at one end of the power arm and further means for applying a force to the force arm are provided which comprise a pressure cylinder which is in operative contact with the force arm to adjust the grinding pressure exerted by the grinding roller. The contact point at which the force of the printing cylinder is transferred to the power arm, it is outside the mill interior.
Ein Druckzylinder kann im Vergleich zu einem Zugzylinder kleiner und kompakter ausgeführt werden, wodurch Einbauraum eingespart wird. Eine außerhalb desA printing cylinder can be made smaller and more compact compared to a pull cylinder, whereby installation space is saved. An outside of
Mühleninnenraums angeordnete Kontaktstelle hat außerdem den Vorteil, dass sie einem niedrigeren Verschleiß ausgesetzt ist, da dort kein Staub und keine hohen Temperaturen vorhanden sind.Mühleninnenraums arranged contact point also has the advantage that it is exposed to a lower wear, since there are no dust and no high temperatures.
Weitere Ausgestaltungen der Erfindung sind Gegenstand der Unter anspräche.Further embodiments of the invention are the subject of the subclaims.
Gemäß einer bevorzugten Ausführungsform ist der Druckzylinder feststehend angeordnet. Ein feststehender Zylinder ist zum einen kompakter und reduziert die beweglichen Massen einer Rolleneinheit, was sich bezüglich der Schwingungen günstig auswirkt.According to a preferred embodiment, the pressure cylinder is arranged fixed. A fixed cylinder is on the one hand more compact and reduces the moving masses of a reel unit, which has a favorable effect on the vibrations.
Außerdem wird der Druckzylinder zweckmäßigerweise senkrecht zur Verbindung zwischen Lager und Mahlrolle ausgerichtet, wodurch eine optimale Kraftübertragung möglich ist. Weiterhin wird der Druckzylinder vorzugsweise in einem Mittelbereich zwischen Mahlrolle und Lager angeordnet. Gemäß einer bevorzugten Ausgestaltung der Erfindung ist zwischen dem Druckzylinder und dem Kraftarm wenigstens ein Drucklager vorgesehen, dass eine Relativbewegung zwischen Druckzylinder und Kraftarm erlaubt. Dieses Drucklager kann dabei insbesondere eine erste und eine zweite Druckfläche zur Ausübung einer Gleitbewegung aufweisen, wobei der Reibwert vorzugsweise weniger als 0,2 beträgt.In addition, the printing cylinder is expediently aligned perpendicular to the connection between the bearing and the grinding roller, whereby an optimal power transmission is possible. Furthermore, the printing cylinder is preferably arranged in a central region between the grinding roller and the bearing. According to a preferred embodiment of the invention, at least one pressure bearing is provided between the pressure cylinder and the power arm that allows a relative movement between the pressure cylinder and power arm. This thrust bearing can in particular have a first and a second pressure surface for exerting a sliding movement, wherein the coefficient of friction is preferably less than 0.2.
Mit dem Drucklager kann die Relativbewegung zwischen feststehenden Druckzylinder und schwenkbeweglichen Kraftarm soweit ausgeglichen werden, dass die auf dem Druckzylinder wirkenden Querkräfte minimiert werden. In einer weiteren Ausgestaltung der Erfindung sind außerdem eine dritte und eine vierte Druckfläche zur Ausübung einer Schwenkbewegung vorgesehen, um dadurch dieWith the thrust bearing, the relative movement between the fixed pressure cylinder and the pivotable power arm can be compensated so far that the forces acting on the impression cylinder transverse forces are minimized. In a further embodiment of the invention, a third and a fourth pressure surface are also provided for exercising a pivoting movement, thereby the
Querkräfte noch weiter zu minimieren. Durch die Anordnung des Drucklagers außerhalb des Mühleninnenraums ist eine aufwendige Abdichtung des Lagers nicht erforderlich.To minimize lateral forces even further. Due to the arrangement of the thrust bearing outside of the mill interior, a complex sealing of the bearing is not required.
Weitere Vorteile und Ausgestaltungen der Erfindung werden im Folgenden anhand der Beschreibung und der Zeichnung näher erläutert.Further advantages and embodiments of the invention will be explained in more detail below with reference to the description and the drawing.
In der Zeichnung zeigenIn the drawing show
Fig. 1 eine geschnittene Teilansicht der Rollenmühle,1 is a partial sectional view of the roller mill,
Fig. 2 eine Prinzipdarstellung der Rollenmühle,2 is a schematic diagram of the roller mill,
Fig. 3 eine geschnittene Teilansicht im Bereich der Kontaktstelle, an der die Kraft des Druckzylinders auf den Kraftarm übertragen wird.Fig. 3 is a partial sectional view in the region of the contact point at which the force of the printing cylinder is transmitted to the power arm.
Die in Fig. 1 dargestellte Rollenmühle besteht im Wesentlichen aus einer Mahlrolle 1 und einem rotierbaren Mahlteller 2, die in einem durch ein Gehäuse 3 begrenztenThe roller mill shown in Fig. 1 consists essentially of a grinding roller 1 and a rotatable grinding table 2, which in a limited by a housing 3
Mühleninnenraum 4 angeordnet sind. Weiterhin ist ein Kraftarm 5 vorgesehen, der schwenkbeweglich und drehfest in einem als Fest lag er ausgebildeten Lager 6 gehaltert ist, wobei die Mahlrolle 1 drehbar am gegenüberliegenden Ende des Kraftarms gelagert ist.Mill interior 4 are arranged. Furthermore, a power arm 5 is provided, the pivotable and rotationally fixed in a lay as he trained camp. 6 is supported, wherein the grinding roller 1 is rotatably mounted at the opposite end of the power arm.
Ferner sind Mittel zum Ausüben einer Kraft auf den Kraftarm 5 vorgesehen, um den von der Mahlrolle ausgeübten Druck einzustellen. Dieser Mittel umfassen einenFurther, means for applying a force to the power arm 5 are provided to adjust the pressure exerted by the grinding roller. This means include a
Druckzylinder 7, der feststehend angeordnet ist und etwa senkrecht zurPressure cylinder 7, which is fixedly arranged and approximately perpendicular to
Verbindungslinie zwischen Lager 6 und Mahlrolle 1 auf den Kraftarm 5 einwirkt.Connecting line between bearing 6 and grinding roller 1 acts on the power arm 5.
Der Druckzylinder 7 wird vorzugsweise durch einen Plungerzylinder gebildet. EineThe impression cylinder 7 is preferably formed by a plunger cylinder. A
Kontaktstelle 8, an der die Kraft des Druckzylinders 7 auf den Kraftarm 5 übertragen wird, befindet sich außerhalb des Mühleninnenraums 4.Contact point 8, at which the force of the printing cylinder 7 is transmitted to the power arm 5, is located outside of the mill interior 4th
Im dargestellten Ausführungsbeispiel wirkt der Druckzylinder 7 in einem Mittelbereich zwischen Mahlrolle 1 und Lager 6 auf den Kraftarm 5. Im Rahmen der Erfindung wäre es aber auch denkbar, dass die Positionen von Lager und Druckzylinder vertauscht sind.In the illustrated embodiment, the pressure cylinder 7 acts in a central region between the grinding roller 1 and bearing 6 on the power arm 5. In the context of the invention, it would also be conceivable that the positions of bearing and pressure cylinder are reversed.
Weiterhin ist der Kraftarm 5 im dargestellten Ausführungsbeispiel geradlinig ausgebildet, wobei aber auch abgeknickte Kraftarme grundsätzlich in Betracht kommen.Furthermore, the power arm 5 is formed in a straight line in the illustrated embodiment, but also bent arms are considered in principle.
Das Lager 6 wird vorzugsweise durch ein Axialgelenklager gebildet, wobei insbesondere zwei gegeneinander angeordnete Axialgelenklager zur Anwendung kommen, die gegeneinander verspannt werden können, wodurch das Lagerspiel minimiert werden kann. Die Mahlrolle 1 am anderen Ende des Kraftarms 5 ist über zwei in O-Anordnung montierte Kegelrollenlager 9 gelagert, wobei sich einThe bearing 6 is preferably formed by an axial spherical plain bearing, wherein in particular two mutually juxtaposed axial spherical plain bearings are used, which can be braced against each other, whereby the bearing clearance can be minimized. The grinding roller 1 at the other end of the power arm 5 is mounted on two mounted in O-arrangement tapered roller bearing 9, wherein a
Schmiermittelraum 10 der Kegelrollenlager 9 bis in einem Bereich außerhalb des Mühleninnenraums 4 erstreckt und dort abgedichtet ist.Lubricant space 10 of the tapered roller bearing 9 extends in a region outside the mill interior 4 and is sealed there.
Wie sich aus der Prinzipdarstellung der Fig. 2 ergibt, ermöglicht das Lager 6 eine Kippbewegung des Kraftarms 5 um einen Winkel α. Es kommt somit zu einerAs is apparent from the schematic diagram of FIG. 2, the bearing 6 allows a tilting movement of the power arm 5 by an angle α. It comes thus to one
Relativbewegung zwischen dem feststehenden Druckzylinder 7 und dem Kraftarm 5. Da der Druckzylinder 7 in ständigem Wirkkontakt mit dem Kraftarm 5 steht, kommt es daher im Bereich der Kontaktstelle aufgrund der Relativbewegung zu Querkräften. Um die Relativbewegung zwischen Druckzylinder 7 und Kraftarm 5 auszugleichen ist ein Drucklager 10 vorgesehen, dass eine Relativbewegung zwischen demRelative movement between the fixed pressure cylinder 7 and the power arm. 5 Since the pressure cylinder 7 is in constant operative contact with the power arm 5, it is therefore in the region of the contact point due to the relative movement to shear forces. To compensate for the relative movement between the impression cylinder 7 and the power arm 5, a thrust bearing 10 is provided that a relative movement between the
Druckzylinder und dem Kraftarm erlaubt. Das Drucklager ist in Fig. 3 näher dargestellt und weist eine erste und eine zweite Druckfläche 10a, 10b zur Ausübung einer Gleitbewegung auf, wobei durch geeignete Auswahl der Gleitpaarung ein Reibwert kleiner 0,2 vorgesehen ist. Um die Einleitung der Querkräfte auf den Zylinder 7 noch weiter zu reduzieren, ist außerdem eine dritte und eine viertePressure cylinder and the power arm allowed. The thrust bearing is shown in more detail in Fig. 3 and has a first and a second pressure surface 10 a, 10 b for exerting a sliding movement, wherein a friction coefficient is less than 0.2 provided by suitable selection of the sliding pair. In order to further reduce the initiation of the lateral forces on the cylinder 7, is also a third and a fourth
Gleitfläche zur Ausübung einer Schwenkbewegung vorgesehen. Auch hier kann durch geeignete Gleitpaarungen der Reibwert minimiert werden. In Fig. 3 sind mit durchgezogenen Linien die Mittelstellung des Kraftarms und mit strichpunktierten Linien die beiden Extremstellungen des Kraftarms in Verbindung mit dem Drucklager dargestellt.Sliding surface provided for exercising a pivoting movement. Again, the coefficient of friction can be minimized by suitable sliding mating. In Fig. 3 are shown by solid lines, the center position of the power arm and with dotted lines the two extreme positions of the power arm in conjunction with the thrust bearing.
Mit dieser Ausbildung des Drucklagers kann die Kraftübertragung vom Druckzylinder auf den Kraftarm in sehr kompakter Art und Weise erfolgen.With this design of the thrust bearing, the power transmission from the impression cylinder to the power arm can be done in a very compact manner.
Bei den der Erfindung zugrunde liegenden Versuchen hat sich außerdem gezeigt, dass das Verhältnis des Abstandes a zwischen Druckzylinder 7 und Mahlrolle 1 zum Abstand b zwischen Druckzylinder 7 und Lager 6 im Bereich von 1 :0,9 und 1 :1,2, vorzugsweise im Bereich von 1 :1,0 und 1 :1,1 liegen sollte, um die im Lager 6, im Druckzylinder 7 und den entsprechenden Gegenlagern wirkenden Kräften möglichst klein zu halten. Dadurch sind bei den beteiligten Elementen entsprechendeIn the experiments underlying the invention has also been shown that the ratio of the distance a between the impression cylinder 7 and grinding roller 1 to the distance b between the impression cylinder 7 and bearing 6 in the range of 1: 0.9 and 1: 1.2, preferably in Range of 1: 1.0 and 1: 1.1 should be in order to keep the forces acting in the bearing 6, the pressure cylinder 7 and the corresponding abutments forces as small as possible. As a result, the elements involved are corresponding
Gewichtsreduzierungen möglich. Weight reductions possible.

Claims

Patentansprüche claims
1. Rollenmühle mit wenigstens einer Mahlrolle (1) und einem rotierbaren Mahlteller (2), die in einem Mühleninnenraum (4) angeordnet sind sowie einem1. roller mill with at least one grinding roller (1) and a rotatable grinding plate (2), which are arranged in a mill interior (4) and a
Kraftarm (5), der schwenkbeweglich und drehfest in einem Lager (6) gehaltert ist, wobei die Mahlrolle (1) drehbar an einem Ende des Kraftarms gelagert ist und ferner Mittel zum Ausüben einer Kraft auf den Kraftarm vorgesehen sind, die einen Druckzylinder (7) umfassen, der mit dem Kraftarm in Wirkkontakt steht, um den von der Mahlrolle ausgeübten Mahldruck einzustellen,A power arm (5) pivotably and non-rotatably supported in a bearing (6), the grinding roller (1) being rotatably supported at one end of the power arm and further comprising means for applying a force to the power arm comprising a pressure cylinder (7 ) which is in operative contact with the force arm to adjust the grinding pressure exerted by the grinding roller,
dadurch gekennzeichnet, dass sich die Kontaktstelle (8), an der die Kraft des Druckzylinders (7) auf den Kraftarm (5) übertragen wird, außerhalb des Mühleninnenraums (4) befindet.characterized in that the contact point (8) at which the force of the printing cylinder (7) is transmitted to the power arm (5), located outside of the mill interior (4).
2. Rollenmühle nach Anspruch 1, dadurch gekennzeichnet, dass der Druckzylinder (7) in einem Mittelbereich zwischen der Mahlrolle (1) und dem Lager (6) auf den Kraftarm (5) einwirkt.2. roller mill according to claim 1, characterized in that the pressure cylinder (7) in a central region between the grinding roller (1) and the bearing (6) on the power arm (5) acts.
3. Rollenmühle nach Anspruch 1, dadurch gekennzeichnet, dass zwischen3. Roller mill according to claim 1, characterized in that between
Druckzylinder und dem Kraftarm (5) wenigstens ein Drucklager (10) vorgesehen ist, das eine Relativbewegung zwischen dem Druckzylinder (7) und dem Kraftarm (5) erlaubt.Pressure cylinder and the power arm (5) at least one thrust bearing (10) is provided, which allows a relative movement between the pressure cylinder (7) and the power arm (5).
4. Rollenmühle nach Anspruch 3, dadurch gekennzeichnet, dass das Drucklager4. Roller mill according to claim 3, characterized in that the thrust bearing
(10) eine erste und eine zweite Druckfläche (10a, 10b) zur Ausübung einer Gleitbewegung und eine dritte und eine vierte Druckfläche (10c, 1Od) zur Ausübung einer Schwenkbewegung aufweist. (10) a first and a second pressure surface (10a, 10b) for exerting a sliding movement and a third and a fourth pressure surface (10c, 1Od) for exercising a pivoting movement.
5. Rollenmühle nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass das Drucklager (10) eine erste und eine zweite Druckfläche (10a, 10b) aufweist, die eine Gleitbewegung mit einem Reibwert kleiner 0,2 ermöglicht.5. Roller mill according to claim 3 or 4, characterized in that the thrust bearing (10) has a first and a second pressure surface (10 a, 10 b), which allows a sliding movement with a coefficient of friction less than 0.2.
6. Rollenmühle nach Anspruch 1, dadurch gekennzeichnet, dass der Druckzylinder6. roller mill according to claim 1, characterized in that the pressure cylinder
(7) feststehend angeordnet ist.(7) is fixed.
7. Rollenmühle nach Anspruch 1, dadurch gekennzeichnet, dass der Druckzylinder (7) senkrecht zur Verbindung zwischen Lager (6) und Mahlrolle (1) ausgerichtet ist.7. roller mill according to claim 1, characterized in that the pressure cylinder (7) perpendicular to the connection between the bearing (6) and grinding roller (1) is aligned.
8. Rollenmühle nach Anspruch 1, dadurch gekennzeichnet, dass das Lager (6) des Kraftarms (5) durch ein Axialgelenklager gebildet wird.8. roller mill according to claim 1, characterized in that the bearing (6) of the power arm (5) is formed by a thrust bearing.
9. Rollenmühle nach Anspruch 1, dadurch gekennzeichnet, dass der Kraftarm (5) geradlinig ausgebildet ist.9. roller mill according to claim 1, characterized in that the force arm (5) is formed in a straight line.
10. Rollenmühle nach Anspruch 1, dadurch gekennzeichnet, dass der Druckzylinder (7) durch einen Plungerzylinder gebildet wird.10. Roller mill according to claim 1, characterized in that the pressure cylinder (7) is formed by a plunger cylinder.
11. Rollenmühle nach Anspruch 1, dadurch gekennzeichnet, dass das Verhältnis des Abstands (a) zwischen Druckzylinder (7) und Mahlrolle (1) zum Abstand (b) zwischen Druckzylinder (7) und Lager (6) des Kraftarms (5) im Bereich von 1 :0,9 und 1 : 1 ,2 , vorzugsweise im Bereich von 1 : 1 ,0 und 1 :1,1 liegt. 11. Roller mill according to claim 1, characterized in that the ratio of the distance (a) between the impression cylinder (7) and grinding roller (1) to the distance (b) between the impression cylinder (7) and bearing (6) of the power arm (5) in the area of 1: 0.9 and 1: 1, 2, preferably in the range of 1: 1, 0 and 1: 1.1.
EP07822380A 2006-12-08 2007-11-08 Roller mill Active EP2081689B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006058012A DE102006058012A1 (en) 2006-12-08 2006-12-08 roller mill
PCT/EP2007/062078 WO2008068125A1 (en) 2006-12-08 2007-11-08 Roller mill

Publications (2)

Publication Number Publication Date
EP2081689A1 true EP2081689A1 (en) 2009-07-29
EP2081689B1 EP2081689B1 (en) 2010-09-15

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EP07822380A Active EP2081689B1 (en) 2006-12-08 2007-11-08 Roller mill

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US (1) US7954743B2 (en)
EP (1) EP2081689B1 (en)
JP (1) JP5265565B2 (en)
CN (1) CN101563163B (en)
DE (2) DE102006058012A1 (en)
DK (1) DK2081689T3 (en)
WO (1) WO2008068125A1 (en)

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DE102008010652B3 (en) * 2008-02-22 2009-11-05 Polysius Ag Power transmission system and roller mill
DE102008039542B4 (en) * 2008-08-25 2010-04-15 Polysius Ag roller mill
DE102008039539B4 (en) * 2008-08-25 2010-08-26 Polysius Ag roller mill
DE102008039543B4 (en) * 2008-08-25 2010-05-12 Polysius Ag roller mill
DE102012106554A1 (en) * 2012-07-19 2014-05-15 Thyssenkrupp Resource Technologies Gmbh Method and plant for comminuting regrind with a roller mill
US9835595B2 (en) * 2013-05-23 2017-12-05 Qorvo Us, Inc. Sensors, methods of making and devices
EP2903744B1 (en) * 2014-03-21 2017-02-22 Loesche GmbH Method and device for preparing and separating a material from a combined multicomponent system
US10799874B2 (en) * 2015-05-27 2020-10-13 General Electric Technology Gmbh Modified journal assembly for pulverizer
CN107470421B (en) * 2017-08-25 2024-02-27 中国人民解放军第五七二一工厂 Bearing unilateral rolling closing device with inner side arranged in closed space
CN113458321A (en) * 2021-05-31 2021-10-01 刘晨旭 Roller mechanism of sand mixer for improving sand mixing effect

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Also Published As

Publication number Publication date
DK2081689T3 (en) 2011-01-03
DE502007005083D1 (en) 2010-10-28
JP2010511502A (en) 2010-04-15
EP2081689B1 (en) 2010-09-15
US20100012760A1 (en) 2010-01-21
WO2008068125A1 (en) 2008-06-12
JP5265565B2 (en) 2013-08-14
US7954743B2 (en) 2011-06-07
CN101563163A (en) 2009-10-21
DE102006058012A1 (en) 2008-06-19
CN101563163B (en) 2011-04-27

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