EP2988874B1 - Roll mill - Google Patents
Roll mill Download PDFInfo
- Publication number
- EP2988874B1 EP2988874B1 EP14719290.0A EP14719290A EP2988874B1 EP 2988874 B1 EP2988874 B1 EP 2988874B1 EP 14719290 A EP14719290 A EP 14719290A EP 2988874 B1 EP2988874 B1 EP 2988874B1
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- EP
- European Patent Office
- Prior art keywords
- roll
- grinding
- machine frame
- mutually
- frame part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000227 grinding Methods 0.000 claims description 35
- 238000000576 coating method Methods 0.000 claims description 21
- 239000011248 coating agent Substances 0.000 claims description 20
- 239000002245 particle Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 239000010437 gem Substances 0.000 description 5
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 238000010285 flame spraying Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
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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
- B02C4/28—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- 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
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/04—Frames; Guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B3/00—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
- B30B3/04—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs co-operating with one another, e.g. with co-operating cones
Definitions
- the invention relates to a roller mill with two arranged in a machine frame roller units, each having a rotatably mounted in two jewels bearing grinding roller, wherein the two grinding rollers are arranged opposite one another and each coupled to a drive for driving in opposite directions of the grinding rollers.
- a Kraftbeetzschlagungssystem for generating a grinding force, wherein the grinding force is transmitted via the machine frame consisting of several frame parts and the jewels on the grinding rollers.
- a detachable, positive connection with two mutually pressed connection surfaces for the transmission of the grinding force is provided.
- the DE 10 2010 048 214 A1 relates to a roller press with two mounted in a machine frame grinding rollers, wherein the machine frame has two tuning fork-shaped frame parts. To close the two tuning fork-shaped frame parts to the rear, it is provided that two closure elements are placed from above on the tuning fork-shaped frame components.
- roller mills are from the US 2 2254 512 A and the US 2010/0243963 A1 known.
- the invention has for its object to enable a faster disassembly and assembly of a roller unit.
- the microforming coating has the advantage that the connecting surfaces only have to be raised a few millimeters in order to allow the withdrawal of the roller unit. Due to the microforming-generating coating, the transferable force is between The two connecting surfaces significantly increased, so that high grinding forces, for example, 16,000 kN and more, can be transmitted, as they occur, for example, in the case of high-pressure roller mills or roller presses in the cement and mineral area.
- clamping means for example in the form of a plurality of screw connections, are provided in order to press the two connection surfaces against one another
- the connecting surfaces are preferably planar and the microforming-producing coating can be formed, in particular, by a hard-particle coating, the hard-material particles preferably having a Mohs hardness of from 6 to 10.
- the roller mill is formed so that a roller unit is mounted as a Loswalze and the other roller unit as a fixed roller in the machine frame, wherein the Kraftbeaufschlagungssystem between the machine frame and acting as the Loswalze roller unit is arranged.
- the machine frame is formed by at least one lower frame part, at least one upper frame part and a plurality of pressure bars connecting the upper and lower frame parts.
- the jewels can be slidably guided on the upper and lower frame part.
- the connecting surfaces are either formed on parts of the machine frame or the microform gleich Incde coating is applied to an intermediate member which is fixedly connected to the parts to be joined of the machine frame.
- roller mill four pressure bars are provided, wherein two pressure bars as an abutment of a roller unit and the other two pressure bars as abutment of the other Serve roller unit and the upper and lower frame part with the four pressure bars are connected by a releasable, positive connection with two mutually pressed connection surfaces, at least two of the pressed against each other connecting surfaces have the microforming-generating coating.
- only two pressure bars are provided, which are connected to the upper and the lower frame parts and serve as an abutment of acting as a Loswalze roller unit.
- the roller unit acting as a fixed roller is then connected via its bearing blocks with the upper and lower frame parts via the detachable, positive connection with two mutually pressed connection surfaces, wherein in turn at least one of the two pressed against each other connecting surfaces has the microforming-generating coating.
- the roller mill illustrated is, for example, a roller press or a fine-bed roller mill with two roller units 2, 3 arranged in a machine frame 1, each having a grinding roller 20, 30, the grinding rollers being arranged opposite each other and each with a drive 4, 5 for driving the grinding rollers in opposite directions are coupled.
- the machine frame is composed of two lower frame parts 10, 11, two upper frame parts 12, 13 and four pressure bars 14 to 17 together.
- the grinding rollers 20, 30 are mounted on stub shafts 21 and 31 in bearing blocks 22, 23 and 32, 33, wherein the bearing blocks are slidably guided on the upper and lower frame parts 10, 11, 12, 13.
- the roller unit 2 is held in the illustrated embodiment as a fixed roller in the machine frame 1 and is supported with its bearing blocks 22, 23 on the pressure bar 15, 17 from.
- the roller unit 3, however, is designed as a Loswalze. Between the machine frame 1 and the roller unit 3, a Kraftbeaufschlagungssystem 50 is provided for generating a grinding force, wherein the grinding force on the machine frame 1 and the jewels 22, 23 and 32, 33 is transferred to the grinding rollers 20, 30, wherein between the two grinding rollers Mahlspalt is maintained. In particular, pressures in the grinding gap of 50 MPa and more can be produced.
- the form-fitting connection of the lower and upper frame parts to the pressure bars of the machine frame 1 will be explained in more detail below.
- the pressure bars 14 to 17 are each connected to one of the lower frame parts 10, 11 and one of the upper frame parts 12, 13 via screw 6, 7 together. From the FIGS. 3 to 5 It can be seen that in this case provided on the pressure bar 15 first connection surface 15a against a provided on the upper frame part 12 second connection surface 12a is pressed.
- one, but preferably both, of these connection surfaces 15a, 12a is provided with a microforming-producing coating 8, 9, for example, by a hard material particle coating having a Mohs hardness of 4 until 6 is formed.
- all joints between the four pressure beams and the upper and lower frame members are formed in this manner.
- FIGS. 6 to 8 The disassembly of a roller unit is based on the FIGS. 6 to 8 seen.
- Fig. 6 shows the roller mill in its operating position according to Fig. 1 .
- the screw 6, 7 between the two pressure bars 15, 17 and the associated lower and upper frame parts are released.
- the coupling of the roller unit to be replaced must be released from its drive.
- this coupling point is provided with the reference numeral 40.
- guide rails 18, 19 are provided in extension of the lower frame parts 10, 11.
- a roller mill according to a second embodiment is shown, which differs from the first embodiment only in that the pressure bars 15, 17 have been omitted and the jewels 22, 23 are screwed directly to the lower and upper frame parts 10, 12 and 11, 13.
- the communicating portions of the first and second bonding surfaces are preferably at least 50%, most preferably at least 90%, covered with the microforming coating.
- the individual particles of the coating preferably have a longest extent of on average ⁇ 2 mm.
- the coating can optionally be applied by gluing, sintering, painting, chemical processes, electroplating, suspension or flame spraying. It is also conceivable that the microforming-producing coating is not applied directly to the pressure bar or the lower or upper frame parts, but rather to intermediate elements which are each firmly connected to the pressure bars or frame parts.
- microforming-producing coating ensures adequate transfer of grinding forces across the machine frame.
- production costs by the elimination of the usual passport joints is much lower and it results in a more compact design.
- the assembly of the machine frame is facilitated by the lower alignment effort, since in particular no Passkeilanfertigung on the site is required.
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Crushing And Grinding (AREA)
Description
Die Erfindung betrifft eine Walzenmühle mit zwei in einem Maschinenrahmen angeordneten Walzeneinheiten, die jeweils eine in zwei Lagersteinen drehbar gelagerte Mahlwalze aufweisen, wobei die beiden Mahlwalzen gegenüberliegend angeordnet und mit jeweils einem Antrieb zum gegenläufigen Antreiben der Mahlwalzen gekoppelt sind.The invention relates to a roller mill with two arranged in a machine frame roller units, each having a rotatably mounted in two jewels bearing grinding roller, wherein the two grinding rollers are arranged opposite one another and each coupled to a drive for driving in opposite directions of the grinding rollers.
Zwischen Maschinenrahmen und wenigstens einer Walzeneinheit ist ein Kraftbeaufschlagungssystem zur Erzeugung einer Mahlkraft vorgesehen, wobei die Mahlkraft über den aus mehreren Rahmenteilen bestehenden Maschinenrahmen und die Lagersteine auf die Mahlwalzen übertragen wird. Dabei ist zwischen wenigstens zwei miteinander verbundenen Rahmenteilen und/oder zwischen einem Rahmenteil und einem der Lagersteine eine lösbare, formschlüssige Verbindung mit zwei gegeneinander gepressten Verbindungsflächen zur Übertragung der Mahlkraft vorgesehen ist.Between the machine frame and at least one roller unit, a Kraftbeaufschlagungssystem is provided for generating a grinding force, wherein the grinding force is transmitted via the machine frame consisting of several frame parts and the jewels on the grinding rollers. In this case, between at least two frame parts connected to one another and / or between a frame part and one of the bearing blocks, a detachable, positive connection with two mutually pressed connection surfaces for the transmission of the grinding force is provided.
Da die Mahlwalzen im Betrieb verschleißen, ist ein turnusmäßiger Walzenwechsel erforderlich, bei dem die Walzeneinheiten nach dem Lösen der Verbindung zwischen Mahlwalze und Antrieb aus dem Maschinenrahmen herausgezogen werden. Dieser Walzenwechsel ist bei Gutbettwalzenmühlen etwa 3 mal pro Jahr erforderlich und ist jeweils mit einem erheblichen Zeitaufwand verbunden, sodass Möglichkeiten gesucht wurden, wie sie beispielsweise in der
Üblicherweise werden bei der Verbindung der Rahmenteile des Maschinenrahmens formschlüssige Verbindungen in Form von runden oder ebenen Passfederverbindungen oder auch Bolzenverbindungen eingesetzt. Bei der Demontage wird die Verbindung zwischen den Druckbalken und einem oberen Rahmenteil (der auch als Obergurt bezeichnet wird) und einem unteren Rahmenteil gelöst, sodass der obere Rahmenteil angehoben werden kann und die Druckbalken und die Walzeneinheit(en) herausgezogen werden können. Dieser Demontagevorgang ist nach wie vor aufwendig und zeitintensiv.Usually, in the connection of the frame parts of the machine frame positive connections in the form of round or flat feather key or bolt connections are used. When disassembling the connection between the pressure bar and an upper frame part (which is also referred to as top chord) and a lower frame part is released, so that the upper frame part can be raised and the pressure bar and the roller unit (s) can be pulled out. This disassembly process is still complex and time consuming.
Eine alternative Möglichkeit zur zeitsparenden Montage und Demontage von Walzeneinheiten ist aus der
In der
Die
Weitere Rollenmühlen sind aus der
Der Erfindung liegt die Aufgabe zugrunde, eine schnellere Demontage und Montage einer Walzeneinheit zu ermöglichen.The invention has for its object to enable a faster disassembly and assembly of a roller unit.
Erfindungsgemäß wird diese Aufgabe durch die Merkmale der Ansprüche 1 und 2 gelöst.According to the invention this object is solved by the features of
Die mikroformschlusserzeugende Beschichtung hat den Vorteil, dass die Verbindungsflächen nur wenige Millimeter angehoben werden müssen, um das Herausziehen der Walzeneinheit zu ermöglichen. Durch die mikroformschlusserzeugende Beschichtung wird die übertragbare Kraft zwischen den beiden Verbindungsflächen deutlich erhöht, sodass auch hohe Mahlkräfte, von beispielsweise 16000 kN und mehr, übertragen werden können, wie sie beispielsweise bei Gutbettwalzenmühlen bzw. Walzenpressen im Zement- und Mineralsbereich auftreten.The microforming coating has the advantage that the connecting surfaces only have to be raised a few millimeters in order to allow the withdrawal of the roller unit. Due to the microforming-generating coating, the transferable force is between The two connecting surfaces significantly increased, so that high grinding forces, for example, 16,000 kN and more, can be transmitted, as they occur, for example, in the case of high-pressure roller mills or roller presses in the cement and mineral area.
Weitere Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Further embodiments of the invention are the subject of the dependent claims.
Gemäß einer weiteren Ausgestaltung der Erfindung sind Spannmittel, beispielsweise in Form einer Vielzahl von Schraubverbindungen, vorgesehen, um die beiden Verbindungsflächen gegeneinander zu pressenAccording to a further embodiment of the invention, clamping means, for example in the form of a plurality of screw connections, are provided in order to press the two connection surfaces against one another
Die Verbindungsflächen sind vorzugsweise plan ausgebildet und die mikroformschlusserzeugende Beschichtung kann insbesondere durch eine Hartstoff-Partikelbeschichtung gebildet werden, wobei die Hartstoffpartikel, vorzugsweise eine Härte nach Mohs von 6 bis 10 aufweisen.The connecting surfaces are preferably planar and the microforming-producing coating can be formed, in particular, by a hard-particle coating, the hard-material particles preferably having a Mohs hardness of from 6 to 10.
Gemäß der Erfindung ist die Walzenmühle so ausgebildet, dass eine Walzeneinheit als Loswalze und die andere Walzeneinheit als Festwalze im Maschinenrahmen gehaltert ist, wobei das Kraftbeaufschlagungssystem zwischen Maschinenrahmen und der als Loswalze fungierenden Walzeneinheit angeordnet ist.According to the invention, the roller mill is formed so that a roller unit is mounted as a Loswalze and the other roller unit as a fixed roller in the machine frame, wherein the Kraftbeaufschlagungssystem between the machine frame and acting as the Loswalze roller unit is arranged.
Der Maschinenrahmen wird durch wenigstens einen unteren Rahmenteil, wenigstens einen oberen Rahmenteil und mehrere den oberen und unteren Rahmenteil verbindende Druckbalken gebildet. Dabei können die Lagersteine am oberen und unteren Rahmenteil gleitverschieblich geführt sein. Die Verbindungsflächen sind entweder an Teilen des Maschinenrahmens ausgebildet oder die mikroformschlusserzeugende Beschichtung ist auf einem Zwischenelement aufgebracht, das fest mit den zu verbindenden Teilen des Maschinenrahmens verbunden ist.The machine frame is formed by at least one lower frame part, at least one upper frame part and a plurality of pressure bars connecting the upper and lower frame parts. In this case, the jewels can be slidably guided on the upper and lower frame part. The connecting surfaces are either formed on parts of the machine frame or the microformschlusserzeugende coating is applied to an intermediate member which is fixedly connected to the parts to be joined of the machine frame.
Gemäß einer ersten bevorzugten Ausgestaltung der Walzenmühle sind vier Druckbalken vorgesehen, wobei zwei Druckbalken als Widerlager der einen Walzeneinheit und die beiden anderen Druckbalken als Widerlager der anderen Walzeneinheit dienen und der obere und untere Rahmenteil mit den vier Druckbalken durch jeweils eine lösbare, formschlüssige Verbindung mit zwei gegeneinander gepressten Verbindungsflächen verbunden sind, wobei wenigstens zwei der gegeneinander gepressten Verbindungsflächen die mikroformschlusserzeugende Beschichtung aufweisen.According to a first preferred embodiment of the roller mill four pressure bars are provided, wherein two pressure bars as an abutment of a roller unit and the other two pressure bars as abutment of the other Serve roller unit and the upper and lower frame part with the four pressure bars are connected by a releasable, positive connection with two mutually pressed connection surfaces, at least two of the pressed against each other connecting surfaces have the microforming-generating coating.
Gemäß einer zweiten Ausgestaltung der Erfindung sind lediglich zwei Druckbalken vorgesehen, die mit den oberen und den unteren Rahmenteilen verbunden sind und als Widerlager der als Loswalze fungierende Walzeneinheit dienen. Die als Festwalze fungierende Walzeneinheit ist dann über ihre Lagersteine mit den oberen und unteren Rahmenteilen über die lösbare, formschlüssige Verbindung mit zwei gegeneinander gepressten Verbindungsflächen verbunden, wobei wiederum wenigstens eine der beiden gegeneinander gepressten Verbindungsflächen die mikroformschlusserzeugende Beschichtung aufweist.According to a second embodiment of the invention, only two pressure bars are provided, which are connected to the upper and the lower frame parts and serve as an abutment of acting as a Loswalze roller unit. The roller unit acting as a fixed roller is then connected via its bearing blocks with the upper and lower frame parts via the detachable, positive connection with two mutually pressed connection surfaces, wherein in turn at least one of the two pressed against each other connecting surfaces has the microforming-generating coating.
Im Folgenden wird die Erfindung anhand der nachfolgenden Beschreibung zweier Ausführungsbeispiele und der Zeichnung näher erläutert.In the following the invention will be explained in more detail with reference to the following description of two embodiments and the drawing.
In der Zeichnung zeigen
- Fig. 1
- eine dreidimensionale Darstellung einer Walzenmühle gemäß einem ersten Ausführungsbeispiel,
- Fig. 2
- eine Schnittdarstellung längs der Linie A-A der
Fig. 6 , die eine Seitenansicht derFig. 1 darstellt, - Fig. 3
- eine vergrößerte Ansicht des Details X der
Fig. 2 , - Fig. 4
- eine Draufsicht der ersten Verbindungsfläche,
- Fig. 5
- eine Draufsicht der zweiten Verbindungsfläche,
- Fig. 6
- eine Seitenansicht der
Fig. 1 in der Betriebsstellung der Walzenmühle, - Fig. 7
- eine Seitenansicht der Walzenmühle mit demontiertem Druckbalken,
- Fig. 8
- eine Seitenansicht der Walzenmühle mit demontierter Walzeneinheit und
- Fig. 9
- eine dreidimensionale Darstellung einer Walzenmühle gemäß einem zweiten Ausführungsbeispiel.
- Fig. 1
- 3 shows a three-dimensional representation of a roller mill according to a first exemplary embodiment,
- Fig. 2
- a sectional view taken along the line AA of
Fig. 6 which is a side view ofFig. 1 represents, - Fig. 3
- an enlarged view of the detail X of the
Fig. 2 . - Fig. 4
- a plan view of the first connection surface,
- Fig. 5
- a plan view of the second connection surface,
- Fig. 6
- a side view of
Fig. 1 in the operating position of the roller mill, - Fig. 7
- a side view of the roller mill with dismantled pressure bar,
- Fig. 8
- a side view of the roller mill with disassembled roller unit and
- Fig. 9
- a three-dimensional view of a roller mill according to a second embodiment.
Bei der in
Die Walzeneinheit 2 ist in dem dargestellten Ausführungsbeispiel als Festwalze im Maschinenrahmen 1 gehaltert und stützt sich mit seinen Lagersteinen 22, 23 an den Druckbalken 15, 17 ab. Die Walzeneinheit 3 ist hingegen als Loswalze ausgebildet. Zwischen dem Maschinenrahmen 1 und der Walzeneinheit 3 ist ein Kraftbeaufschlagungssystem 50 zur Erzeugung einer Mahlkraft vorgesehen, wobei die Mahlkraft über den Maschinenrahmen 1 und die Lagersteine 22, 23 sowie 32, 33 auf die Mahlwalzen 20, 30 übertragen wird, wobei zwischen den beiden Mahlwalzen ein Mahlspalt aufrechterhalten wird. Dabei können insbesondere Drücke im Mahlspalt von 50 MPa und mehr erzeugt werden.The
Anhand der
Die Demontage einer Walzeneinheit wird anhand der
Nach dem Lösen der Schraubverbindungen 6, 7 können die beiden Druckbalken 15, 17 über die Führungsschienen 18, 19 herausgezogen werden. Unter Umständen ist es zweckmäßig, wenn die beiden oberen Rahmenteile 12, 13 zu diesem Zweck mittels eines Kettenzuges um wenige Millimeter angehoben oder zumindest festgehalten werden. In der weiteren Folge wird dann auch die Walzeneinheit 2 vollständig herausgezogen. Sofern erforderlich wird dann auch die andere Walzeneinheit 3 nach Lösen ihrer Verbindung mit dem Antrieb 5 herausgezogen. Der Einbau erfolgt in umgekehrter Reihenfolge.After loosening the
In
Die miteinander in Verbindung stehenden Bereiche der ersten und zweiten Verbindungsfläche sind vorzugsweise zu wenigstens 50%, höchstvorzugsweise zu wenigstens 90%, mit der mikroformschlusserzeugenden Beschichtung bedeckt. Die einzelnen Partikel der Beschichtung weisen vorzugsweise eine längste Ausdehnung von durchschnittlich < 2 mm auf. Die Beschichtung kann wahlweise durch Klebung, Sintern, Lackierung, chemische Verfahren, galvanische Verfahren, Suspension oder Flammspritzverfahren aufgebracht werden. Es ist auch denkbar, dass die mikroformschlusserzeugende Beschichtung nicht direkt auf den Druckbalken bzw. den unteren oder oberen Rahmenteilen, sondern vielmehr auf Zwischenelementen aufgebracht ist, die jeweils fest mit den Druckbalken oder Rahmenteilen verbunden sind.The communicating portions of the first and second bonding surfaces are preferably at least 50%, most preferably at least 90%, covered with the microforming coating. The individual particles of the coating preferably have a longest extent of on average <2 mm. The coating can optionally be applied by gluing, sintering, painting, chemical processes, electroplating, suspension or flame spraying. It is also conceivable that the microforming-producing coating is not applied directly to the pressure bar or the lower or upper frame parts, but rather to intermediate elements which are each firmly connected to the pressure bars or frame parts.
Der große Vorteil der mikroformschlusserzeugenden Beschichtung besteht vor allem darin, dass bereits ein geringfügiges Abheben der beiden Verbindungsflächen von wenigen Millimetern völlig ausreichend ist, um die Druckbalken bzw. die Walzeneinheiten herauszuziehen. Dennoch gewährleistet diese Beschichtung eine ausreichende Übertragung der Mahlkräfte über den Maschinenrahmen. Des Weiteren ist der Fertigungsaufwand durch den Wegfall der bisher üblichen Passverbindungen wesentlich geringer und es ergibt sich eine kompaktere Bauform. Auch die Montage des Maschinenrahmens wird durch den geringeren Ausrichtungsaufwand erleichtert, da insbesondere keine Passkeilanfertigung auf der Baustelle erforderlich ist.The great advantage of the microforming-producing coating is, above all, that even a slight lifting off of the two connecting surfaces of a few millimeters is completely sufficient to pull out the pressure bars or the roller units. Nevertheless, this coating ensures adequate transfer of grinding forces across the machine frame. Furthermore, the production costs by the elimination of the usual passport joints is much lower and it results in a more compact design. The assembly of the machine frame is facilitated by the lower alignment effort, since in particular no Passkeilanfertigung on the site is required.
Claims (8)
- Roll mill having two roll units (2, 3) which are disposed in a machine frame (1) and which comprise in each case one grinding roll (20, 30) which is rotatably mounted in two bearing blocks (22, 23, 32, 33), wherein- the two grinding rolls (20, 30) are disposed so as to be mutually opposite and are in each case coupled to a drive (4, 5) for driving the grinding rolls in a counter-rotating manner;- a force-impingement system (50) for generating a grinding force is provided between the machine frame (1) and at least one roll unit (3), wherein the grinding force is transmitted by way of the machine frame (1) and the bearing blocks (22, 23, 32, 33) to the grinding rolls (20, 30);- one roll unit (3) is mounted as a loose roll and the other roll unit (2) is mounted as a fixed roll in the machine frame (1), wherein the force-impingement system (50) is disposed between the machine frame (1) and the roll unit (3) that functions as the loose roll; and- the machine frame (1) is composed of a plurality of frame parts, specifically at least one lower frame part (10, 11), at least one upper frame part (12, 13), and four pressure beams (14 - 17) which connect the upper and the lower frame part, wherein two pressure beams (14, 16) serve as counter-bearings of the one roll unit (3), and the two other pressure beams (15, 17) serve as counter-bearings of the other roll unit (2);- the upper and the lower frame part (10, 11, 12, 13) are connected to the four pressure beams (14 - 17) by way of in each case one releasable form-fitting connection having two mutually compressed connection faces (15a, 12a) for transmitting the grinding force;characterized in that- at least two of the mutually compressed connection faces comprise a micro-form-fit generating coating (8, 9); and- the form-fitting connection of the mutually connected frame parts is completely cancelled by mutually raising the two connection faces by at most 4 mm.
- Roll mill having two roll units (2, 3) which are disposed in a machine frame (1) and which comprise in each case one grinding roll (20, 30) which is rotatably mounted in two bearing blocks (22, 23, 32, 33), wherein- the two grinding rolls (20, 30) are disposed so as to be mutually opposite and are in each case coupled to a drive (4, 5) for driving the grinding rolls in a counter-rotating manner;- a force-impingement system (50) for generating a grinding force is provided between the machine frame (1) and at least one roll unit (3), wherein the grinding force is transmitted by way of the machine frame (1) and the bearing blocks (22, 23, 32, 33) to the grinding rolls (20, 30);- one roll unit (3) is mounted as a loose roll and the other roll unit (2) is mounted as a fixed roll in the machine frame (1), wherein the force-impingement system (50) is disposed between the machine frame (1) and the roll unit (3) that functions as the loose roll;- the machine frame (1) is composed of a plurality of frame parts (10, 11, 12, 13), specifically at least one lower frame part (10, 11), at least one upper frame part (12, 13), and two pressure beams (14 - 17), wherein the two pressure beams (14, 116) are connected to the upper and the lower frame part (10 - 13) and serve as counter-bearings of the roll unit (3) that functions as the loose roll;- wherein between at least two mutually connected frame parts, and/or between at least one frame part and one of the bearing blocks, a releasable form-fitting connection having two mutually compressed connection faces (15a, 12a) is provided for transmitting the grinding force;characterized in that- the roll unit (2) that functions as the fixed roll, having the bearing blocks (22, 23) associated therewith, is connected to the upper and the lower frame part (10 - 13) by way of the releasable form-fitting connection having two mutually compressed connection faces (15a, 12a);- wherein at least one of the two mutually compressed connection faces (15a, 12a) comprises a micro-form-fit generating coating (8, 9); and- the form-fitting connection of the frame part (10, 11, 12, 13) and the bearing block (22, 23) is completely cancelled by mutually raising the two connection faces by at most 4 mm.
- Roll mill according to Claim 1 or 2, characterized in that tensioning means for mutually compressing the two connection faces (15a, 12a) are provided.
- Roll mill according to Claim 3, characterized in that the tensioning means are formed by a multiplicity of screw connections (6, 7).
- Roll mill according to Claim 1 or 2, characterized in that the two connection faces (15a, 12a) are configured so as to be planar.
- Roll mill according to Claim 1 or 2, characterized in that the micro-form-fit generating coating (8, 9) is formed by a hard-material particle coating.
- Roll mill according to Claim 1 or 2, characterized in that the bearing blocks are guided so as to be displaceable in a sliding manner on the upper and the lower frame part (10, 11, 12, 13).
- Roll mill according to Claim 1 or 2, characterized in that at least one of the connection faces having the micro-form-fit generating coating (8, 9) is applied to an intermediate element.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013104097.7A DE102013104097A1 (en) | 2013-04-23 | 2013-04-23 | rolling mill |
PCT/EP2014/058099 WO2014173875A1 (en) | 2013-04-23 | 2014-04-22 | Roll mill |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2988874A1 EP2988874A1 (en) | 2016-03-02 |
EP2988874B1 true EP2988874B1 (en) | 2019-06-05 |
Family
ID=50549318
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14719290.0A Active EP2988874B1 (en) | 2013-04-23 | 2014-04-22 | Roll mill |
Country Status (14)
Country | Link |
---|---|
US (1) | US20160101424A1 (en) |
EP (1) | EP2988874B1 (en) |
CN (1) | CN105142791B (en) |
AU (1) | AU2014257639B2 (en) |
BR (1) | BR112015024710A2 (en) |
CA (1) | CA2907836C (en) |
CL (1) | CL2015002853A1 (en) |
DE (1) | DE102013104097A1 (en) |
DK (1) | DK2988874T3 (en) |
MX (1) | MX2015013341A (en) |
PE (1) | PE20151825A1 (en) |
RU (1) | RU2650546C2 (en) |
WO (1) | WO2014173875A1 (en) |
ZA (1) | ZA201506900B (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013110981A1 (en) * | 2013-10-02 | 2015-04-02 | Thyssenkrupp Industrial Solutions Ag | A method of operating a plant having at least one aggregate having a rotating surface |
DE102014015247B4 (en) * | 2014-10-16 | 2017-06-08 | Khd Humboldt Wedag Gmbh | Roller press with widened frame head |
DE102014223524A1 (en) * | 2014-11-18 | 2016-05-19 | Takraf Gmbh | Machine frame for a roller press |
DE102015213747A1 (en) | 2015-07-21 | 2017-01-26 | Thyssenkrupp Ag | Machine frame of a roller mill |
CA3014904A1 (en) * | 2015-11-24 | 2017-06-01 | Flsmidth A/S | System and method for roller press drive removal |
WO2017197074A1 (en) * | 2016-05-12 | 2017-11-16 | Oronoko Ironworks, Inc. | Modular roller grinding mill |
WO2021023643A1 (en) * | 2019-08-07 | 2021-02-11 | Thyssenkrupp Industrial Solutions Ag | Roller mill with a synchronising device |
CN110420994B (en) * | 2019-09-09 | 2021-10-22 | 安吉两山景观设计院 | Soil reducing mechanism |
CA3160767A1 (en) * | 2020-02-14 | 2021-08-19 | Pedro Guerrero Palma | Roller mill with a synchronizing device |
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WO2007137445A1 (en) * | 2006-06-01 | 2007-12-06 | Hartchrom Ag | Component made of two non-positively joined work pieces |
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SU516419A1 (en) * | 1973-12-29 | 1976-06-05 | Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Зерна И Продуктов Его Переработки | Method for the production of wheat flour |
US3938732A (en) * | 1974-09-16 | 1976-02-17 | Iowa Manufacturing Company | Adjustment means for roll crushers with gas hydraulic springs |
DE3633435A1 (en) * | 1986-10-01 | 1988-04-14 | Uni Cardan Ag | METHOD FOR PRODUCING A BUILT-IN CAMSHAFT, AND BUILT-IN CAMSHAFT FROM A SHAFT TUBE AND SLIDE-ON ELEMENTS |
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2013
- 2013-04-23 DE DE102013104097.7A patent/DE102013104097A1/en not_active Withdrawn
-
2014
- 2014-04-22 RU RU2015150035A patent/RU2650546C2/en active
- 2014-04-22 AU AU2014257639A patent/AU2014257639B2/en active Active
- 2014-04-22 PE PE2015002055A patent/PE20151825A1/en active IP Right Grant
- 2014-04-22 CA CA2907836A patent/CA2907836C/en active Active
- 2014-04-22 US US14/786,933 patent/US20160101424A1/en not_active Abandoned
- 2014-04-22 WO PCT/EP2014/058099 patent/WO2014173875A1/en active Application Filing
- 2014-04-22 BR BR112015024710A patent/BR112015024710A2/en not_active Application Discontinuation
- 2014-04-22 CN CN201480023426.7A patent/CN105142791B/en active Active
- 2014-04-22 MX MX2015013341A patent/MX2015013341A/en unknown
- 2014-04-22 DK DK14719290.0T patent/DK2988874T3/en active
- 2014-04-22 EP EP14719290.0A patent/EP2988874B1/en active Active
-
2015
- 2015-09-17 ZA ZA2015/06900A patent/ZA201506900B/en unknown
- 2015-09-24 CL CL2015002853A patent/CL2015002853A1/en unknown
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US3828515A (en) * | 1969-12-16 | 1974-08-13 | G Galgoczy | Non-slip, high strength bolted joints |
DE4110643A1 (en) * | 1991-04-02 | 1992-10-08 | Krupp Polysius Ag | Two roller high power grinder - drives each roller with separate electromotor with rotor connected to roller and stator attached to bearing |
WO2007137445A1 (en) * | 2006-06-01 | 2007-12-06 | Hartchrom Ag | Component made of two non-positively joined work pieces |
Also Published As
Publication number | Publication date |
---|---|
EP2988874A1 (en) | 2016-03-02 |
DE102013104097A1 (en) | 2014-10-23 |
MX2015013341A (en) | 2016-08-08 |
BR112015024710A2 (en) | 2017-07-18 |
RU2015150035A (en) | 2017-05-26 |
WO2014173875A1 (en) | 2014-10-30 |
DK2988874T3 (en) | 2019-08-12 |
CN105142791A (en) | 2015-12-09 |
ZA201506900B (en) | 2017-02-22 |
AU2014257639B2 (en) | 2017-11-23 |
PE20151825A1 (en) | 2015-12-20 |
RU2015150035A3 (en) | 2018-03-06 |
AU2014257639A1 (en) | 2015-10-15 |
CL2015002853A1 (en) | 2016-03-28 |
CA2907836A1 (en) | 2014-10-30 |
CN105142791B (en) | 2018-07-27 |
US20160101424A1 (en) | 2016-04-14 |
CA2907836C (en) | 2016-10-11 |
RU2650546C2 (en) | 2018-04-16 |
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