EP1907121B1 - Safety system for a roller mill - Google Patents
Safety system for a roller mill Download PDFInfo
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- EP1907121B1 EP1907121B1 EP06753587A EP06753587A EP1907121B1 EP 1907121 B1 EP1907121 B1 EP 1907121B1 EP 06753587 A EP06753587 A EP 06753587A EP 06753587 A EP06753587 A EP 06753587A EP 1907121 B1 EP1907121 B1 EP 1907121B1
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- European Patent Office
- Prior art keywords
- mill
- gear
- base plate
- safety system
- replacement
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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
- 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 safety system for a roller mill according to the preamble of claim 1 known, for example from DE19 702 854 ,
- roller mills have considerable advantages in terms of design and control as well as in terms of energy consumption, environmental behavior and overall economy.
- roller mills are used both for the production of cement raw meal and for clinker milling and coal grinding. If raw material grinding plants are operated in conjunction with rotary kilns and a calcination plant, the kiln exhaust gases from the heat exchanger and clinker cooler process can be used for mill drying and for the pneumatic transport of the ground cement raw material or coal.
- FIG. 1 Such a roller mill is shown in sections in a side view and without housing. Grinding rollers 2, each with a rocker arm 21 about a swing lever axis 22 in a Bearing 29 of a stand 20 are pivotally mounted, roll on a driven by a drive shaft 26 via a gear 4 grinding bowl 3.
- the Wälzmühle according to Fig. 1 has two grinding rollers, of which only one grinding roller 2 is shown.
- the stands 20, which are each associated with a grinding roller 2 are at its lower end in a region of a mill foundation 5, which is usually a concrete foundation, attached to a steel foundation frame 15.
- the mill gear 4 is anchored via an intermediate plate or a gear base plate 27 in the mill foundation 5 or foundation frame 15.
- An Indian DE 103 43 218 A1 described roller mill safety system provides for a constant availability of at least four grinding rollers by the arrangement of more than four grinding rollers, the grinding rollers are arranged in pairs opposite each other and four grinding rollers provide about 80% of the full mill power in a four-roller operation.
- the roller mill is operated with four rollers after the defective grinding roller and its opposite grinding roller were swung out.
- the advantage of this safety concept is that the roller mill continue to be operated with damage to the grinding rollers, rocker arm or suspension systems after a brief stop and swing a pair of grinding rollers with four grinding rollers can and the raw meal production and thus the furnace operation does not have to be stopped.
- the swung-out grinding rollers, rocker arms or suspension systems can be separated or replaced.
- roller mill must be put out of action in a gear damage, whereby the subsequent processes are interrupted and in a cement plant, for example, the clinker production is stopped. It is necessary to repair the gearbox and to pull it out from under the mill for this purpose, after removing the electric drive motor including the coupling and disconnecting all connecting piping to a lubrication system.
- a replacement transmission can also be installed, if available. Repair and installation of a replacement gearbox, however, require several days of removal and installation time.
- the invention has for its object to provide a security system for a rolling mill, particularly for a roller mill in modular construction, which ensures the transmission side with a low capital and installation costs, a high availability of the roller mill. According to the invention the object is achieved by the features of claim 1. Advantageous and advantageous embodiments are contained in the subclaims and in the description of the figures.
- a basic idea of the invention can be seen to provide a change concept for the mill gear, which allows a rapid replacement of the mill gear and possibly the drive motor and the lubrication system and keeps the downtime and the resulting production loss extremely low.
- a second gear is provided as a replacement or replacement gear
- the mill gear and the exchange gear is arranged on at least one base plate.
- the base plate is arranged, preferably in predetermined paths, adjustably on the mill foundation or the foundation frame and arranged on the base plate exchange gear can be damaged by adjusting the base plate in place of the mill gear, i. into the mill area and under the grinding bowl. According to the invention, this requires only an adjustment of the at least one base plate.
- the mill gear located in operation and the electric drive motor connected to the mill gear via a torsionally flexible coupling are arranged on a horizontally adjustable base plate and aligned exactly with one another.
- the units are arranged side by side and on a longitudinal axis of the base plate, and on the motor side facing away from the mill gear, a second mill gear as a Replacement or replacement gear and a connected via a clutch engine further pre-assembled.
- the required lubrication system for the transmission lubrication is located between the mill gear and the replacement gear and connected via pipes to both gears.
- the grinding bowl is lifted after loosening fastening screws and supported separately. Subsequently, the entire base plate is longitudinally displaced, such that the exchange gear is positioned under the grinding bowl. After lowering and fixing the grinding bowl, the mill operation can be resumed.
- the particular advantage of this transmission safety concept according to the invention is that the defective transmission can be repaired without disturbing the grinding operation or removed for repair.
- the safety system is suitable for cement plants and other central grinding plants and leads to significant time savings in a gearbox change.
- Another advantage of this safety concept is that the loosening and subsequent reconnection of the lubrication lines, the time-consuming alignment of the individual components, gear, clutch, motor to each other, as well as the sequence of the removal and subsequent installation omitted or not respected.
- the individual units are arranged side by side on the longitudinal axis of the base plate, and the base plate is designed to be displaceable in the direction of its longitudinal axis.
- An alternative safety system provides a common base plate with a pre-assembled mill gear, a replacement gearbox and a common lubrication system, which can be adjusted horizontally.
- the drive motor arranged outside the base plate is disassembled and mounted on the opposite side after the base plate has been moved to its new position.
- the replacement gear is positioned in the mill center and under the grinding bowl and is connected to the displaced drive motor.
- Another alternative provides a transmission-safety system in which the base plate with the aggregates arranged thereon not only horizontally and in the direction of the longitudinal axis of the base plate is displaceable, but can also be rotated about a vertical axis.
- the operating mill gear, the lubrication system and the exchange gear are mounted, while the drive motor outside of the adjustable base plate on a separate frame or a console, which allows the alignment of the shaft journals of transmission and motor to each other, is arranged.
- the base plate in the opposite direction, relative to the drive motor, linearly displaced from the mill area and outside the mill area by 180 ° about the vertical axis, which may be provided in the lubrication system rotated. Thereafter, the base plate is pushed back in the direction of mill area and drive motor, the exchange gear is now arranged under the grinding bowl in the operating position and can be connected to the drive motor via the clutch.
- the base plate is dimensioned such that an arrangement and longitudinal displacement between each two stands of the roller mill is ensured.
- Roller mills with an odd number of rolls e.g. Three- or five-roller mills are the preferred catchment area of the following gearbox variant.
- a first and second base plate are used.
- the mill gear, the drive motor and the clutch are mounted aligned with each other.
- the replacement gearbox, the second motor and a clutch are mounted ready for use.
- the lubrication system can be placed separately next to the mill gear or is also on the respective base plate, in which case two lubrication systems are used.
- the entire unit of the first base plate is withdrawn from the mill area and laterally, i. shifted at right angles to the longitudinal axis of the first base plate in an area designated as a repair area.
- the second base plate with the exchange gear is defined by a region designated as an application region, e.g. transversely to the longitudinal axis of the second base plate, moved and then passes through a longitudinal displacement in the mill area and under the grinding bowl.
- the second base plate can be provided without a motor and the drive motor can be arranged on this second base plate if necessary.
- this concept provides for a longitudinal displacement only by means of a removal opening formed by two uprights, it can be used, in particular in the case of mills with an odd number of rollers, in which the opposite side is blocked by a mill stand.
- lifting devices and displacement devices are expedient. If hydraulic press bodies are used as lifting devices, these can be arranged between the base plate and the displacement device.
- the base plate may be formed like a frame and fixed to the mill foundation or the foundation frame.
- Fig. 1 is a half-side view of a known roller mill with two grinding rollers, but only a grinding roller 2 and a stator 20 is shown, is shown.
- the mill gear 4 below the grinding bowl 3 is connected via a Getriebefußplatte 27 with the foundation frame 15 of the mill foundation 5, which is a concrete foundation.
- the Fig. 2 to 5 show a first embodiment of the transmission-side safety system according to the invention for a roller mill in modular design.
- Fig. 2 and 3 which show only the components of interest here, is a six-roll mill in modular design.
- To the mill center with the mill gear 4 are six modular units, shown here by six stands 20 with bearing block 29 for the oscillating lever axis 22 of the grinding roller (not shown), respectively.
- the stands 20, the mill gear 4, a drive motor 6 and a lubrication system 7 are on a mill foundation 5, which is a concrete foundation with cast foundation frame (not shown) arranged.
- the mill gear 4 and the drive motor 6 are exactly aligned with each other together on a base plate 10 fixed.
- the mill gear 4 is connected via a torsionally flexible coupling 9 to the electric drive motor 6, and the mill gear 4 is in the mill area 8, i. positioned centrally and below the grinding bowl, not shown.
- the common base plate 10 is adapted to receive further units and horizontally adjustable along its longitudinal axis between two stands 20.
- a second transmission which is arranged as a replacement gear 14 mirror-symmetrical to the mill gear 4 next to the lubrication system 7.
- the exchange gear 14 is connected via a torsionally flexible coupling 9 with a second motor 16, which like the exchange gear 14 on the common base plate 10th is mounted.
- the base plate 10 is supported on the mill foundation 5 and the foundation frame 15, not shown, and displaceable in the longitudinal direction (see double arrow A). This longitudinal displacement takes place on guide tracks 34 for rollers, which in conjunction with the Fig. 5 be explained further.
- the grinding bowl (not shown) raised after loosening the mounting screws and supported separately. Subsequently, the base plate 10 is mounted with mounted thereon unit of mill gear 4, drive motor 6, lubrication system 7, exchange gear 14 and second motor 16 such that the exchange gear 14 enters the mill area 8 and below the grinding bowl (see Fig. 3 ). After lowering and fixing the grinding bowl, the mill operation can be resumed.
- the defective mill gear 4 is due to the displacement of the common base plate 10 outside of the mill area and can be removed for repair.
- the longitudinal displacement of the base plate 10 takes place in the embodiment of FIGS. 2 to 5 with the help of winches 36 and an attacking on the base plate 10 pull rope 38.
- the base plate 10 can be moved back into the mill area 8 with the repaired, original mill gear 4 and the drive motor back when the exchange gear 14 in use or the second motor 16 fail.
- the 4 and 5 show a arranged on the base plate 10 unit for quick change concept for transmission according to the Fig. 2 and 3 , but without mill stand.
- the mill gear 4 and the exchange gear 14 are connected via a Gear base plate 27 mounted on the common longitudinally displaceable base plate 10.
- the drive motor 6 and the second motor 16 of the exchange unit are each connected via a torsionally flexible coupling 9 with the mill gear 4 and the exchange gear 14 aligned exactly to each other.
- the drive motor 6 and the second motor 16 are mounted for this purpose on a frame 32, which allows the alignment of the shaft journals of transmission and engine to each other.
- the longitudinal displacement of the base plate 10 is performed by means of lifting devices 30 and displacement devices 31.
- Fig. 5 shows a lifting device 30 and shifting devices 31 in detail.
- lifting device 30 hydraulic compacts 37 are arranged between the base plate 10 and the displacement device 31.
- the displacement device 31 comprises Schweriastrollen 35, which are guided on guideways 34, and arranged at a distance of the displacement cable winches 36th
- Fig. 6 shows an alternative exchange concept for a mill gear 4.
- a mill gear 4 On a base plate 10 are arranged as a preassembled unit a mill gear 4, an exchange gear 14 and between these a lubrication system 7, which is connected via pipes to both transmissions 4, 14.
- a drive motor 6 Outside the common base plate 10, a drive motor 6 is connected via a torsionally flexible coupling 9 with the mill gear 4 under exact alignment. If the mill gear 4 which is in operation is damaged, the drive motor 6 is dismantled and the base plate 10 is displaced in such a way that the exchange gear 14 is located in the mill area and below the grinding bowl (not shown).
- the dismantled drive motor 6 is mounted on the opposite side and connected to the exchange gear 14.
- the base plate 10 could also be pulled to the side facing away from the engine (arrow C) from the mill area 8, which is shown highly schematically by the longitudinal axis 25 and rotated by 180 about a vertical axis 12, which may be located for example in the lubrication system 7 and then moved according to arrow D again in the longitudinal direction of the base plate 10 in the mill area 8.
- the exchange gear 14 Below the grinding bowl in the mill area 8 is then the exchange gear 14 and can be connected to the drive motor 6.
- Fig. 7 is a further alternative for a gear change by means of a horizontally displaceable base plate 10 shown highly schematically.
- the mill gear 4 and the drive motor 6 are arranged together on a first base plate 10 in the mill area 8.
- the lubrication system 7 is arranged on the side facing away from the motor and outside the base plate 10.
- an application area 19 which is arranged parallel to a longitudinal displacement area 28 for the base plate 10, a second base plate 13 is provided ready for use with a mounted thereon exchange gear 14 and second motor 16.
- the base plate 10 is displaced in the direction of the longitudinal axis 11 from the mill area 8 in the longitudinal displacement portion 28 as indicated by arrow E and passes through a transverse displacement according to arrow F in a repair area 18.
- This repair area 18 is parallel to the application area 19 in this embodiment and disposed on the opposite side of the longitudinal sliding portion 28.
- the second base plate 13 is now moved transversely to its longitudinal axis 33, ie according to arrow G, in the longitudinal displacement region 28 and then pulled or pushed in the longitudinal direction according to arrow H in the mill area 8.
- a lubrication system 7 may be mounted on the first base plate 10 and on the second base plate 13. Since the degradation of the connecting pipes to the lubrication system can be omitted, a further time savings is achieved.
- a four-roll mill with four mill stands 20 is shown.
- the transmission change variant is particularly suitable for mills with an odd number of rollers, in which the motor opposite side is blocked by a mill stand, suitable.
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
Description
Die Erfindung betrifft ein Sicherheitssystem für eine Wälzmühle gemäß dem Oberbegriff des Anspruchs 1 bekannt z.B. aus
Es ist bekannt, Wälzmühlen zur Vermahlung unterschiedlichster Materialien einzusetzen. Wälzmühlen weisen in konstruktiver und regelungstechnischer Hinsicht sowie in Bezug auf Energieverbrauch, Umweltverhalten und Gesamtwirtschaftlichkeit erhebliche Vorteile auf.It is known to use Wälzmühlen for grinding a variety of materials. Roller mills have considerable advantages in terms of design and control as well as in terms of energy consumption, environmental behavior and overall economy.
In der Zementindustrie werden Wälzmühlen sowohl zur Herstellung von Zementrohmehl als auch zur Klinkervermahlung und Kohlevermahlung eingesetzt. Wenn Rohmaterial-Mahlanlagen im Verbund mit Drehrohröfen und einer Kalzinieranlage betrieben werden, können die Ofenabgase aus dem Wärmetauscher- und Klinkerkühler-Prozess zur Mahltrocknung und zum pneumatischen Transport des gemahlenen Zementrohmaterials bzw. der Kohle genutzt werden.In the cement industry, roller mills are used both for the production of cement raw meal and for clinker milling and coal grinding. If raw material grinding plants are operated in conjunction with rotary kilns and a calcination plant, the kiln exhaust gases from the heat exchanger and clinker cooler process can be used for mill drying and for the pneumatic transport of the ground cement raw material or coal.
In der Regel werden Zwei-, Drei- und Vier-Walzen-Mühlen, welche nach dem Modulsystem aufgebaut sind, eingesetzt. Eine Luftstrom-Wälzmühle in Modulbauweise nach dem LOESCHE-System ist aus
Um die erforderliche Betriebssicherheit eines Zementwerkes bei einem kontinuierlichen Betrieb des Drehrohrofens durch eine entsprechende Mühlenleistung zu gewährleisten, sind Sicherheitskonzepte bekannt. Ein in der
Bevorzugt werden sechs Mahlwalzen angeordnet, und im Falle eines Schadens an einer Mahlwalze, einem Schwinghebel oder Federungsteil wird die Wälzmühle mit vier Walzen betrieben, nachdem die defekte Mahlwalze und die ihr gegenüberliegende Mahlwalze ausgeschwenkt wurden. Der Vorteil dieses Sicherheitskonzeptes besteht darin, dass die Wälzmühle bei Beschädigungen der Mahlwalzen, Schwinghebel oder Federungssysteme nach einem kurzen Anhalten und Ausschwenken eines Mahlwalzenpaares mit vier Mahlwalzen weiterbetrieben werden kann und die Rohmehlproduktion und damit der Ofenbetrieb nicht gestoppt werden muss. Die ausgeschwenkten Mahlwalzen, Schwinghebel oder Federungssysteme können separiert bzw. ersetzt werden.Preferably, six grinding rollers are arranged, and in case of damage to a grinding roller, a rocker arm or suspension member, the roller mill is operated with four rollers after the defective grinding roller and its opposite grinding roller were swung out. The advantage of this safety concept is that the roller mill continue to be operated with damage to the grinding rollers, rocker arm or suspension systems after a brief stop and swing a pair of grinding rollers with four grinding rollers can and the raw meal production and thus the furnace operation does not have to be stopped. The swung-out grinding rollers, rocker arms or suspension systems can be separated or replaced.
Ein Nachteil besteht jedoch darin, dass die Wälzmühle bei einem Getriebeschaden außer Betrieb gesetzt werden muss, wodurch die nachfolgenden Prozesse unterbrochen und in einer Zementanlage beispielsweise die Klinkerproduktion gestoppt wird. Es ist erforderlich, das Getriebe zu reparieren und zu diesem Zweck unter der Mühle bzw. der Mahlschüssel herauszuziehen, nachdem der elektrische Antriebsmotor einschließlich Kupplung entfernt wurde und alle Verbindungsrohrleitungen zu einer Schmieranlage abgebaut wurden.A disadvantage, however, is that the roller mill must be put out of action in a gear damage, whereby the subsequent processes are interrupted and in a cement plant, for example, the clinker production is stopped. It is necessary to repair the gearbox and to pull it out from under the mill for this purpose, after removing the electric drive motor including the coupling and disconnecting all connecting piping to a lubrication system.
Alternativ zu einer sofortigen Vorort-Reparatur kann auch ein Ersatzgetriebe eingebaut werden, sofern dieses bereitsteht. Reparatur und Einbau eines Ersatzgetriebes erfordern jedoch eine mehrtägige Aus- und Einbauzeit.As an alternative to an immediate on-site repair, a replacement transmission can also be installed, if available. Repair and installation of a replacement gearbox, however, require several days of removal and installation time.
Aus diesem Grunde wird von den Betreibern das herkömmliche Sicherheitskonzept bevorzugt, nach welchem für die Rohmehlverarbeitung bei großen Ofenleistungen zwei parallele Wälzmühlen mit einem Drehrohrofen kombiniert werden. Diese Zwei-Mühlen- Variante ist jedoch mit entsprechend hohen Investitionskosten verbunden.For this reason, the conventional safety concept is preferred by the operators, according to which two parallel roller mills are combined with a rotary kiln for the raw meal processing at high furnace outputs. However, this two-mill variant is associated with correspondingly high investment costs.
Der Erfindung liegt die Aufgabe zugrunde, ein Sicherheitssystem für eine Wälzmühle, insbesondere für eine Wälzmühle in Modulbauweise, zu schaffen, welches mit einem geringen Investitions- und Montageaufwand getriebeseitig eine hohe Verfügbarkeit der Wälzmühle gewährleistet. Erfindungsgemäß wird die Aufgabe durch die Merkmale des Anspruchs 1 gelöst. Zweckmäßige und vorteilhafte Ausgestaltungen sind in den Unteransprüchen und in der Figurenbeschreibung enthalten.The invention has for its object to provide a security system for a rolling mill, particularly for a roller mill in modular construction, which ensures the transmission side with a low capital and installation costs, a high availability of the roller mill. According to the invention the object is achieved by the features of claim 1. Advantageous and advantageous embodiments are contained in the subclaims and in the description of the figures.
Ein Grundgedanke der Erfindung kann darin gesehen werden, ein Wechselkonzept für das Mühlengetriebe vorzusehen, welches ein rasches Auswechseln des Mühlengetriebes und gegebenenfalls des Antriebsmotors und der Schmieranlage ermöglicht und die Stillstandszeit und den dadurch bedingten Produktionsausfall außerordentlich gering hält.A basic idea of the invention can be seen to provide a change concept for the mill gear, which allows a rapid replacement of the mill gear and possibly the drive motor and the lubrication system and keeps the downtime and the resulting production loss extremely low.
Gemäß dem erfindungsgemäßen getriebeseitigen Sicherheitssystem für eine Wälzmühle ist ein zweites Getriebe als Ersatz- oder Austauschgetriebe vorgesehen, und das Mühlengetriebe sowie das Austauschgetriebe wird auf wenigstens einer Grundplatte angeordnet. Die Grundplatte ist, bevorzugt in vorgegebenen Bahnen, verstellbar auf dem Mühlenfundament bzw. dem Fundamentrahmen angeordnet und das auf der Grundplatte angeordnete Austauschgetriebe kann bei Beschädigung des Mühlengetriebes durch Verstellung der Grundplatte an die Stelle des Mühlengetriebes, d.h. in den Mühlenbereich und unter die Mahlschüssel, positioniert werden. Gemäß der Erfindung bedarf es hierzu lediglich einer Verstellung der wenigstens einen Grundplatte.According to the gear-side safety system according to the invention for a roller mill, a second gear is provided as a replacement or replacement gear, and the mill gear and the exchange gear is arranged on at least one base plate. The base plate is arranged, preferably in predetermined paths, adjustably on the mill foundation or the foundation frame and arranged on the base plate exchange gear can be damaged by adjusting the base plate in place of the mill gear, i. into the mill area and under the grinding bowl. According to the invention, this requires only an adjustment of the at least one base plate.
In einer bevorzugten Ausbildungsvariante sind auf einer horizontal verstellbaren Grundplatte das im Betrieb befindliche Mühlengetriebe und der mit dem Mühlengetriebe über eine drehelastische Kupplung verbundene elektrische Antriebsmotor angeordnet und exakt zueinander ausgerichtet. Die Aggregate sind nebeneinander und auf einer Längsachse der Grundplatte angeordnet, und auf der motorabgewandten Seite des Mühlengetriebes sind ein zweites Mühlengetriebe als ein Ersatz- oder Austauschgetriebe und ein über eine Kupplung verbundener weiterer Motor vormontiert. Die erforderliche Schmieranlage für die Getriebeschmierung ist zwischen dem Mühlengetriebe und dem Austauschgetriebe angeordnet und über Rohrleitungen mit beiden Getrieben verbunden.In a preferred embodiment variant, the mill gear located in operation and the electric drive motor connected to the mill gear via a torsionally flexible coupling are arranged on a horizontally adjustable base plate and aligned exactly with one another. The units are arranged side by side and on a longitudinal axis of the base plate, and on the motor side facing away from the mill gear, a second mill gear as a Replacement or replacement gear and a connected via a clutch engine further pre-assembled. The required lubrication system for the transmission lubrication is located between the mill gear and the replacement gear and connected via pipes to both gears.
Im Falle eines Defektes an dem im Betrieb befindlichen Mühlengetriebe wird die Mahlschüssel nach Lösen von Befestigungsschrauben angehoben und separat abgestützt. Anschließend wird die gesamte Grundplatte längsverschoben, derart, dass das Austauschgetriebe unter der Mahlschüssel positioniert ist. Nach Absenken und Befestigen der Mahlschüssel kann der Mühlenbetrieb wieder aufgenommen werden.In the event of a defect in the mill gear in operation, the grinding bowl is lifted after loosening fastening screws and supported separately. Subsequently, the entire base plate is longitudinally displaced, such that the exchange gear is positioned under the grinding bowl. After lowering and fixing the grinding bowl, the mill operation can be resumed.
Der besondere Vorteil dieses erfindungsgemäßen Getriebe-Sicherheitskonzeptes besteht darin, dass das defekte Getriebe ohne Störung des Mahlbetriebes repariert bzw. zur Reparatur ausgebaut werden kann. Das Sicherheitssystem ist für Zementanlagen und weitere Zentral-Mahlanlagen geeignet und führt zu einer signifikanten Zeitersparnis bei einem Getriebewechsel.The particular advantage of this transmission safety concept according to the invention is that the defective transmission can be repaired without disturbing the grinding operation or removed for repair. The safety system is suitable for cement plants and other central grinding plants and leads to significant time savings in a gearbox change.
Ein weiterer Vorteil dieses Sicherheitskonzeptes besteht darin, dass das Lösen und anschließende erneute Verbinden der Schmierleitungen, das zeitaufwändige Ausrichten der einzelnen Komponenten, Getriebe, Kupplung, Motor zueinander, sowie die Ablauffolge des Ausbaus und des nachfolgenden Einbaus entfallen bzw. nicht eingehalten werden muss.Another advantage of this safety concept is that the loosening and subsequent reconnection of the lubrication lines, the time-consuming alignment of the individual components, gear, clutch, motor to each other, as well as the sequence of the removal and subsequent installation omitted or not respected.
Zweckmäßigerweise sind die einzelnen Aggregate auf der Längsachse der Grundplatte nebeneinander angeordnet, und die Grundplatte ist in Richtung ihrer Längsachse verschiebbar ausgebildet.Conveniently, the individual units are arranged side by side on the longitudinal axis of the base plate, and the base plate is designed to be displaceable in the direction of its longitudinal axis.
Ein alternatives Sicherheitssystem sieht eine gemeinsame Grundplatte mit einem vormontierten Mühlengetriebe, einem Austauschgetriebe und einer gemeinsamen Schmieranlage vor, welche horizontal verstellt werden kann. Im Schadensfall des im Betrieb befindlichen Mühlengetriebes wird der außerhalb der Grundplatte angeordnete Antriebsmotor demontiert und auf der gegenüberliegenden Seite montiert, nachdem die Grundplatte in ihre neue Position verschoben wurde. In dieser neuen Position ist das Austauschgetriebe im Mühlenzentrum und unter der Mahlschüssel positioniert und wird mit dem verstellten Antriebsmotor verbunden.An alternative safety system provides a common base plate with a pre-assembled mill gear, a replacement gearbox and a common lubrication system, which can be adjusted horizontally. In case of damage of the mill gear in operation, the drive motor arranged outside the base plate is disassembled and mounted on the opposite side after the base plate has been moved to its new position. In this new position, the replacement gear is positioned in the mill center and under the grinding bowl and is connected to the displaced drive motor.
Eine weitere Alternative sieht ein Getriebe-Sicherheitssystem vor, bei welchem die Grundplatte mit den darauf angeordneten Aggregaten nicht nur horizontal und in Richtung der Längsachse der Grundplatte verschiebbar ist, sondern auch um eine vertikale Achse verdreht werden kann. Auf einer gemeinsamen Grundplatte sind das in Betrieb befindliche Mühlengetriebe, die Schmieranlage und das Austauschgetriebe montiert, während der Antriebsmotor außerhalb der verstellbaren Grundplatte auf einem eigenen Rahmen oder einer Konsole, welche das Ausrichten der Wellenzapfen von Getriebe und Motor zueinander erlaubt, angeordnet ist.Another alternative provides a transmission-safety system in which the base plate with the aggregates arranged thereon not only horizontally and in the direction of the longitudinal axis of the base plate is displaceable, but can also be rotated about a vertical axis. On a common base plate, the operating mill gear, the lubrication system and the exchange gear are mounted, while the drive motor outside of the adjustable base plate on a separate frame or a console, which allows the alignment of the shaft journals of transmission and motor to each other, is arranged.
Bei einem Getriebeschaden wird die Grundplatte in die entgegengesetzte Richtung, bezogen auf den Antriebsmotor, aus dem Mühlenbereich linear verschoben und außerhalb des Mühlenbereichs um 180° um die vertikale Achse, welche im Bereich der Schmieranlage vorgesehen sein kann, gedreht. Danach wird die Grundplatte in Richtung Mühlenbereich und Antriebsmotor zurückgeschoben, wobei das Austauschgetriebe nunmehr unter der Mahlschüssel in Betriebsstellung angeordnet ist und mit dem Antriebsmotor über die Kupplung verbunden werden kann.In case of a gear damage, the base plate in the opposite direction, relative to the drive motor, linearly displaced from the mill area and outside the mill area by 180 ° about the vertical axis, which may be provided in the lubrication system rotated. Thereafter, the base plate is pushed back in the direction of mill area and drive motor, the exchange gear is now arranged under the grinding bowl in the operating position and can be connected to the drive motor via the clutch.
Zweckmäßigerweise ist die Grundplatte derart dimensioniert, dass eine Anordnung und Längsverschiebung zwischen jeweils zwei Ständern der Wälzmühle gewährleistet ist.Conveniently, the base plate is dimensioned such that an arrangement and longitudinal displacement between each two stands of the roller mill is ensured.
Es ist vorteilhaft, dass die alternativen Sicherheitssysteme sowohl bei Zwei-, Vier- als auch Sechs-Walzenanordnungen eingesetzt werden können.It is advantageous that the alternative safety systems can be used on both two-, four- and six-roller arrangements.
Wälzmühlen mit einer ungeraden Walzenanzahl, z.B. Drei- oder Fünf-Walzenmühlen, sind das bevorzugte Einzugsgebiet der nachfolgenden Getriebewechselvariante. Hierbei werden eine erste und zweite Grundplatte eingesetzt. Auf der ersten Grundplatte, welche sich im Mühlenbereich bzw. unter der Mahlschüssel befindet, sind das Mühlengetriebe, der Antriebsmotor und die Kupplung zueinander ausgerichtet befestigt. Auf der zweiten Grundplatte sind das Austauschgetriebe, der zweite Motor und eine Kupplung einsatzbereit montiert. Die Schmieranlage kann separat neben dem Mühlengetriebe aufgestellt sein oder steht ebenfalls auf der jeweiligen Grundplatte, wobei dann zwei Schmieranlagen eingesetzt sind.Roller mills with an odd number of rolls, e.g. Three- or five-roller mills are the preferred catchment area of the following gearbox variant. Here, a first and second base plate are used. On the first base plate, which is located in the mill area or under the grinding bowl, the mill gear, the drive motor and the clutch are mounted aligned with each other. On the second base plate, the replacement gearbox, the second motor and a clutch are mounted ready for use. The lubrication system can be placed separately next to the mill gear or is also on the respective base plate, in which case two lubrication systems are used.
Bei einem Defekt des im Betrieb befindlichen Mühlengetriebes wird die gesamte Einheit der ersten Grundplatte aus dem Mühlenbereich herausgezogen und seitlich, d.h. rechtwinklig zur Längsachse der ersten Grundplatte in einen als Reparaturbereich bezeichneten Bereich verschoben. Die zweite Grundplatte mit dem Austauschgetriebe wird von einem als Einsatzbereich bezeichneten Bereich, z.B. quer zur Längsachse der zweiten Grundplatte, verschoben und gelangt danach durch eine Längsverschiebung in den Mühlenbereich und unter die Mahlschüssel.In the event of a malfunction of the mill gear in operation, the entire unit of the first base plate is withdrawn from the mill area and laterally, i. shifted at right angles to the longitudinal axis of the first base plate in an area designated as a repair area. The second base plate with the exchange gear is defined by a region designated as an application region, e.g. transversely to the longitudinal axis of the second base plate, moved and then passes through a longitudinal displacement in the mill area and under the grinding bowl.
In einer Ausbildungsvariante kann die zweite Grundplatte ohne Motor bereitgestellt werden und der Antriebsmotor bei Bedarf auf dieser zweiten Grundplatte angeordnet sein.In a variant embodiment, the second base plate can be provided without a motor and the drive motor can be arranged on this second base plate if necessary.
Da dieses Konzept eine Längsverschiebung nur durch eine von zwei Ständern gebildete Ausbauöffnung vorsieht, kann es besonders bei Mühlen mit ungerader Walzenanzahl, bei welcher die gegenüberliegende Seite durch einen Mühlenständer versperrt ist, eingesetzt werden.Since this concept provides for a longitudinal displacement only by means of a removal opening formed by two uprights, it can be used, in particular in the case of mills with an odd number of rollers, in which the opposite side is blocked by a mill stand.
Es ist von Vorteil, dass das Verschieben der Grundplatte in einer für Schwerlasttransporte üblichen Weise erfolgen kann.It is advantageous that the displacement of the base plate can take place in a manner customary for heavy-load transports.
Zweckmäßig ist die Verwendung von Anhebevorrichtungen und Verschiebeeinrichtungen. Wenn als Anhebevorrichtungen hydraulische Presskörper verwendet werden, können diese zwischen der Grundplatte und der Verschiebeeinrichtung angeordnet werden.The use of lifting devices and displacement devices is expedient. If hydraulic press bodies are used as lifting devices, these can be arranged between the base plate and the displacement device.
Als Verschiebeeinrichtung können Schwerlastrollen, welche auf Führungsbahnen an beiden Seiten der Grundplatte auf dem Mühlenfundament angeordnet werden und eine Seilwinde, welche an der Grundplatte angreift, eingesetzt werden.As a sliding device heavy duty rollers, which are arranged on guideways on both sides of the base plate on the mill foundation and a winch, which acts on the base plate, are used.
Es besteht auch die Möglichkeit, die Längsverschiebung der Grundplatten und das Drehen mit Hilfe eines hydraulischen Gleitfilms und ähnlichem durchzuführen.It is also possible to perform the longitudinal displacement of the base plates and the rotation by means of a hydraulic sliding film and the like.
Die Grundplatte kann rahmenartig ausgebildet sein und am Mühlenfundament bzw. am Fundamentrahmen fixiert werden.The base plate may be formed like a frame and fixed to the mill foundation or the foundation frame.
Die Erfindung wird nachstehend anhand einer Zeichnung weiter erläutert; in dieser zeigen in einer stark schematisierten Darstellung
- Fig. 1
- eine halbe Seitenansicht einer Wälzmühle in Modul- bauweise, jedoch ohne Gehäuse;
- Fig. 2
- eine Variante des erfindungsgemäßen Getriebe- Sicherheitssystems vor dem Getriebewechsel;
- Fig. 3
- das erfindungsgemäße Getriebe-Sicherheitssystem nach dem Getriebewechsel;
- Fig. 4
- eine Grundplatte des erfindungsgemäßen Getriebe- Sicherheitssystems;
- Fig. 5
- eine vergrößerte Darstellung des Ausschnittes V in
Fig. 4 ; - Fig. 6
- eine zweite Variante eines Getriebe-Sicherheits- systems und
- Fig. 7
- eine dritte Variante eines Getriebe-Sicherheits- systems.
- Fig. 1
- a half side view of a roller mill in modular design, but without housing;
- Fig. 2
- a variant of the transmission safety system according to the invention before the gearbox change;
- Fig. 3
- the transmission safety system according to the invention after the gearbox change;
- Fig. 4
- a base plate of the transmission safety system according to the invention;
- Fig. 5
- an enlarged view of the section V in
Fig. 4 ; - Fig. 6
- a second variant of a transmission safety system and
- Fig. 7
- a third variant of a transmission safety system.
In
Die
Für identische Merkmale werden in allen Figuren identische Bezugszeichen verwendet.For identical features, identical reference numerals are used in all figures.
Bei der Wälzmühle der
Die Ständer 20, das Mühlengetriebe 4, ein Antriebsmotor 6 sowie eine Schmieranlage 7 sind auf einem Mühlenfundament 5, welches ein Betonfundament mit eingegossenem Fundamentrahmen (nicht dargestellt) ist, angeordnet.The stands 20, the mill gear 4, a
Um ein effizientes Wechselkonzept für das Mühlengetriebe 4 zu schaffen, mit welchem die Produktionsausfallzeit in einem außerordentlich günstigen Zeitrahmen von beispielsweise weniger als 24 Stunden gehalten werden kann, sind das Mühlengetriebe 4 und der Antriebsmotor 6 exakt zueinander ausgerichtet gemeinsam auf einer Grundplatte 10 festgelegt. Das Mühlengetriebe 4 ist über eine drehelastische Kupplung 9 mit dem elektrischen Antriebsmotor 6 verbunden, und das Mühlengetriebe 4 ist im Mühlenbereich 8, d.h. mittig und unterhalb der nicht dargestellten Mahlschüssel positioniert.In order to create an efficient change concept for the mill gear 4, with which the production downtime can be kept in an extremely favorable time frame of, for example, less than 24 hours, the mill gear 4 and the
Die gemeinsame Grundplatte 10 ist zur Aufnahme weiterer Aggregate ausgebildet und entlang ihrer Längsachse zwischen jeweils zwei Ständern 20 horizontal verstellbar. Bei den weiteren Aggregaten handelt es sich um ein zweites Getriebe, welches als Austauschgetriebe 14 spiegelsymmetrisch zum Mühlengetriebe 4 neben der Schmieranlage 7 angeordnet ist. Das Austauschgetriebe 14 ist über eine drehelastische Kupplung 9 mit einem zweiten Motor 16 verbunden, welcher wie das Austauschgetriebe 14 auf der gemeinsamen Grundplatte 10 montiert ist. Die Grundplatte 10 ist auf dem Mühlenfundament 5 bzw. dem nicht dargestellten Fundamentrahmen 15 abgestützt und in Längsrichtung (siehe Doppelpfeil A) verschiebbar. Diese Längsverschiebung erfolgt auf Führungsbahnen 34 für Rollen, welche in Verbindung mit der
Bei einem Ausfall des Mühlengetriebes 4 wird die Mahlschüssel (nicht dargestellt) nach Lösen der Befestigungsschrauben angehoben und separat abgestützt. Anschließend wird die Grundplatte 10 mit der darauf montierten Einheit von Mühlengetriebe 4, Antriebsmotor 6, Schmieranlage 7, Austauschgetriebe 14 und zweitem Motor 16 derart verschoben, dass das Austauschgetriebe 14 in den Mühlenbereich 8 und unter die Mahlschüssel gelangt (siehe
Die Längsverschiebung der Grundplatte 10 erfolgt beim Ausführungsbeispiel der
Die
Die Längsverschiebung der Grundplatte 10 wird mit Hilfe von Anhebevorrichtungen 30 und Verschiebeeinrichtungen 31 durchgeführt.
Alternativ könnte die Grundplatte 10 auch zur motorabgewandten Seite (Pfeil C) aus dem Mühlenbereich 8, welcher durch die Längsachse 25 stark schematisiert gezeigt ist, gezogen und um eine vertikale Achse 12, welche sich beispielsweise im Bereich der Schmieranlage 7 befinden kann, um 180 gedreht und danach gemäß Pfeil D wieder in Längsrichtung der Grundplatte 10 in den Mühlenbereich 8 verschoben. Unterhalb der Mahlschüssel im Mühlenbereich 8 befindet sich dann das Austauschgetriebe 14 und kann mit dem Antriebsmotor 6 verbunden werden.Alternatively, the
In
Bei Ausfall des Mühlengetriebes 4 wird die Grundplatte 10 in Richtung der Längsachse 11 aus dem Mühlenbereich 8 in den Längsverschiebebereich 28 gemäß Pfeil E verschoben und gelangt durch eine Querverschiebung gemäß Pfeil F in einen Reparaturbereich 18. Dieser Reparaturbereich 18 ist in diesem Ausführungsbeispiel parallel zum Einsatzbereich 19 und auf der gegenüberliegenden Seite des Längsverschiebebereichs 28 angeordnet. Die zweite Grundplatte 13 wird nunmehr quer zu ihrer Längsachse 33, d.h. gemäß Pfeil G, in den Längsverschiebebereich 28 verschoben und danach in Längsrichtung gemäß Pfeil H in dem Mühlenbereich 8 gezogen oder geschoben.In case of failure of the mill gear 4, the
Alternativ können auf der ersten Grundplatte 10 und auf der zweiten Grundplatte 13 jeweils eine Schmieranlage 7 montiert sein. Da der Abbau der Verbindungsrohrleitungen zum Schmiersystem entfallen kann, wird eine weitere Zeitersparnis erreicht.Alternatively, in each case a lubrication system 7 may be mounted on the
In
Claims (20)
- Safety system for a roller mill
with crushing rollers (2) rolling on a rotary crushing pan (3),
with a mill gear (4), which is positioned below the crushing pan (3) and supported on a mill foundation (5) and
with a drive motor (6) and a lubricating system (7) for the mill gear (4), characterized in that
for ensuring the permanent availability of the roller mill a replacement gear (14) is provided,
the mill gear (4) and the replacement gear (14) are placed on at least one base pilate (10, 13),
the base plate (10, 13) is horizontally adjustable on the mill foundation (5) and in the case of a failure to the mill gear (4), by adjusting the base plate (10, 13), the replacement gear (14) can be positioned below the crushing pan (3) in place of the mill gear (4). - Safety system according to claim 1,
characterized in that
the base plate (10) is constructed for a joint arrangement of the mill gear (4) and the drive motor (6) connected by means of a coupling (9) to the mill gear (4), the lubricating system (7), the replacement gear (14) and a second motor (16), the lubricating system (7) being positioned between the mill gear (4) and the replacement gear (14) and the in each case externally located drive motor (2) or second motor (16). - Safety system according to claim 1 or 2,
characterized in that
the base plate (10) is constructed so as to be displaceable in the direction of its longitudinal axis (11). - Safety system according to one of the preceding claims,
characterized in that
the base plate (10) is displaceable in a longitudinal displacement area (28) between two adjacent mill standards (20) of a roller mill in a modular construction. - Safety system according to one of the preceding claims,
characterized in that
the mill gear (4) and the drive motor (6), as well as the replacement gear (14) and the second motor (17) are precisely mutually oriented. - Safety system according to one of the preceding claims,
characterized in that
the mill gear (4) and the drive motor (6) and/or the replacement gear (14) and the second motor (16) are interconnected by means of a torsionally elastic coupling (9). - Safety system according to one of the preceding claims,
characterized in that
the lubricating system (7) between the mill gear (4) and the replacement gear (14) is connected by means of pipes to the mill gear (4) and the replacement gear (14). - Safety system according to one of the claims 1 and 3 to 7,
characterized in that
the mill gear (4), lubricating system (7) and replacement gear (14) are jointly placed on the base plate (10) and the drive motor (6) is connected to the mill gear (4) and that in the case of a failure to the mill gear (4) the base plate (10) is longitudinally displaceable in the direction of the drive motor (6) for positioning the replacement gear (14) in the operating position below the crushing pan (3) and the drive motor (6) is positionable alongside and connectable to the replacement gear (14). - Safety system according to one of the claims 1 and 3 to 7,
characterized in that
the mill gear (4), lubricating system (7) and replacement gear (14) are jointly placed on a base plate (10) adjustably placed on the mill foundation (5) in the direction of its longitudinal axis (11) and about a vertical axis (12). - Safety system according to claim 9,
characterized in that
after failure to mill gear (4), the base plate (10) is displaceable towards the motor-remote side from the mill area (8) and outside said mill area (8) can be rotated by 180° about the vertical axis (12) and moved back in longitudinal direction into the mill area (8) and that the replacement gear (14) is placed in the operating position below the crushing pan (3) and can be connected to the drive motor (6) located outside the base plate (10). - Safety system according to claim 1,
characterized in that
the mill gear (4) and drive motor (6) are jointly and in mutually oriented manner placed on the first base plate (10) and a replacement gear (14) and a second motor (16) are jointly placed in mutually oriented manner on a second base plate (13) and
that the first and second base plates (10, 13) are guided in horizontally adjustable manner on the mill foundation (5) and in the case of a failure to mill gear (4), following the adjustment of the first base plate (10), the second base plate (13) with the replacement gear (14) can be positioned in the operating position below the crushing pan (3). - Safety system according to claim 11,
characterized in that
the lubricating system (7) is located outside the first and second base plates (10, 13) on the motor-remote side of the mill gear (4) or replacement gear (14) positioned in the operating position. - Safety system according to claim 11,
characterized in that
in each case a lubricating system (7) is placed on the first and second base plates (10, 13) on the motor-remote side of the mill gear (4) or replacement gear (14). - Safety system according to one of the claims 11 to 13,
characterized in that
in the case of a failure to mill gear (4), the first base plate (10) is displaceable in the direction of its longitudinal axis (11) out of the mill area (8) and into a repair area (18) and
that the second base plate (13), positioned in ready-to-use manner in a use area (19), is displaceable into the mill area (8) and into the operating position of the replacement gear (14) below the crushing pan (3). - Safety system according to claim 14,
characterized in that
the first base plate (10) is displaceable in the direction of its longitudinal axis (11) in a longitudinal displacement area (28) from the mill area (8) and transversely to its longitudinal axis (11) into the repair area (18) and that the second base plate (31) is displaceable from the use area (19), which is axially parallel to the repair area (18) and to the longitudinal displacement area (28),
transversely to its longitudinal axis (33) into the longitudinal displacement area (28) and then in the direction of its longitudinal axis (33) into the mill area (8) and the operating position of the replacement gear (14) below the crushing pan (3). - Safety system according to one of the preceding claims,
characterized in that
lifting devices (30) and displacement devices (31) are provided for the displacement of the base plate (10, 13). - Safety system according to one of the preceding claims,
characterized in that,
as lifting devices (30) hydraulic press bodies (37) are provided between the base plate (10, 13) and the displacement device (31). - Safety system according to claim 16 or 17,
characterized in that
the displacement device (31) has heavy duty rolls (35) guided on guideways (34) and a cable winch (36) acting on the base plate (10, 13). - Safety system according to one the preceding claims,
characterized in that
the base plate (10, 13) is adjustable by means of a hydraulic sliding film, floating pads and the like. - Safety system according to one of the preceding claims,
characterized in that
the base plate (10, 13) has a frame-like construction and can be fixed, at least in the operating position, to the mill foundation (5) or foundation frame (15).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005030145A DE102005030145B4 (en) | 2005-06-28 | 2005-06-28 | Safety system for a roller mill |
PCT/EP2006/004493 WO2007000211A1 (en) | 2005-06-28 | 2006-05-12 | Safety system for a roller mill |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1907121A1 EP1907121A1 (en) | 2008-04-09 |
EP1907121B1 true EP1907121B1 (en) | 2011-07-13 |
Family
ID=36940272
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06753587A Not-in-force EP1907121B1 (en) | 2005-06-28 | 2006-05-12 | Safety system for a roller mill |
Country Status (9)
Country | Link |
---|---|
US (1) | US7731116B2 (en) |
EP (1) | EP1907121B1 (en) |
CN (1) | CN100556548C (en) |
AT (1) | ATE516083T1 (en) |
DE (1) | DE102005030145B4 (en) |
DK (1) | DK1907121T3 (en) |
ES (1) | ES2367140T3 (en) |
RU (1) | RU2353432C2 (en) |
WO (1) | WO2007000211A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008015141A1 (en) * | 2008-03-20 | 2009-11-05 | Gebr. Pfeiffer Ag | roller mill |
DE102008039543B4 (en) * | 2008-08-25 | 2010-05-12 | Polysius Ag | roller mill |
KR101010603B1 (en) | 2008-12-18 | 2011-01-25 | 한전케이피에스 주식회사 | The Pulverizer Machine |
DE102011008967B4 (en) * | 2011-01-12 | 2014-10-30 | Khd Humboldt Wedag Gmbh | Plant for the production of cement with a central milling unit |
EP3056278B1 (en) * | 2015-02-10 | 2019-06-12 | Flender GmbH | Drive assembly for a vertical mill |
US10493462B2 (en) * | 2016-06-21 | 2019-12-03 | General Electric Technology Gmbh | System, method and apparatus for upgrading a pulverizer |
CN108187826B (en) * | 2018-01-16 | 2024-01-02 | 莱歇研磨机械制造(上海)有限公司 | Transmission device of mill |
JP2024024559A (en) * | 2022-08-09 | 2024-02-22 | 川崎重工業株式会社 | Vertical roller mill and maintenance method of speed reducer |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE396424C (en) | 1923-05-29 | 1925-02-18 | Rheinische Maschinenfabrik | Ring roller mill |
US3150836A (en) * | 1961-01-27 | 1964-09-29 | Donald C Krahe | Apparatus for mixing and milling viscous materials |
US3169712A (en) * | 1961-07-19 | 1965-02-16 | Pfeiffer Barbarossa Werke Ag G | Roller ring mill |
US3366338A (en) * | 1965-12-07 | 1968-01-30 | Foster Wheeler Corp | Segment-type grinding ring |
BE475118A (en) * | 1966-12-28 | |||
US4234132A (en) * | 1979-05-21 | 1980-11-18 | Combustion Engineering, Inc. | Bowl mill with air deflector means |
DE3335719C1 (en) * | 1983-10-01 | 1985-01-31 | Alpine Ag, 8900 Augsburg | Safety lock for cutting mills |
DE3443716A1 (en) * | 1984-11-30 | 1986-06-05 | Deutsche Babcock Werke AG, 4200 Oberhausen | ROLL BOWL MILL |
DE3927376A1 (en) * | 1989-08-19 | 1991-02-21 | Fritz Sachse Maschinen Gmbh | Security document shredding machine - has two rotors which rotate at widely different speeds and in opposite directions |
DE19603655A1 (en) * | 1996-02-01 | 1997-08-07 | Loesche Gmbh | Roller mill |
DE19702854A1 (en) * | 1997-01-27 | 1998-07-30 | Krupp Polysius Ag | Vertical axis mill for grinding mineral materials |
CN2345280Y (en) * | 1998-01-05 | 1999-10-27 | 王云 | Vertical middle disintegrating mill |
CN2345281Y (en) * | 1998-08-17 | 1999-10-27 | 游培增 | Vertical roller grinder for super-microfine powder |
DE10343218B4 (en) * | 2003-09-12 | 2006-05-04 | Loesche Gmbh | Safety system for a roller grinding mill guarantees the constant availability of four grinding rollers by an arrangement of more than four grinding rollers |
-
2005
- 2005-06-28 DE DE102005030145A patent/DE102005030145B4/en not_active Expired - Fee Related
-
2006
- 2006-05-12 EP EP06753587A patent/EP1907121B1/en not_active Not-in-force
- 2006-05-12 DK DK06753587.2T patent/DK1907121T3/en active
- 2006-05-12 WO PCT/EP2006/004493 patent/WO2007000211A1/en not_active Application Discontinuation
- 2006-05-12 RU RU2007107339/03A patent/RU2353432C2/en not_active IP Right Cessation
- 2006-05-12 US US11/661,429 patent/US7731116B2/en not_active Expired - Fee Related
- 2006-05-12 AT AT06753587T patent/ATE516083T1/en active
- 2006-05-12 CN CNB200680000731XA patent/CN100556548C/en not_active Expired - Fee Related
- 2006-05-12 ES ES06753587T patent/ES2367140T3/en active Active
Also Published As
Publication number | Publication date |
---|---|
RU2007107339A (en) | 2008-10-27 |
DE102005030145B4 (en) | 2007-10-04 |
DE102005030145A1 (en) | 2007-01-04 |
CN100556548C (en) | 2009-11-04 |
EP1907121A1 (en) | 2008-04-09 |
US7731116B2 (en) | 2010-06-08 |
ES2367140T3 (en) | 2011-10-28 |
US20070257144A1 (en) | 2007-11-08 |
CN101010141A (en) | 2007-08-01 |
DK1907121T3 (en) | 2011-10-24 |
ATE516083T1 (en) | 2011-07-15 |
WO2007000211A1 (en) | 2007-01-04 |
RU2353432C2 (en) | 2009-04-27 |
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