EP0382827A1 - Process and device for cleaning conveying channels. - Google Patents

Process and device for cleaning conveying channels.

Info

Publication number
EP0382827A1
EP0382827A1 EP19890908819 EP89908819A EP0382827A1 EP 0382827 A1 EP0382827 A1 EP 0382827A1 EP 19890908819 EP19890908819 EP 19890908819 EP 89908819 A EP89908819 A EP 89908819A EP 0382827 A1 EP0382827 A1 EP 0382827A1
Authority
EP
European Patent Office
Prior art keywords
drum
conveyor
column
chains
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19890908819
Other languages
German (de)
French (fr)
Other versions
EP0382827B1 (en
Inventor
Heinrich Kaiser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Preussag Stahl AG
Original Assignee
Preussag Stahl AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Preussag Stahl AG filed Critical Preussag Stahl AG
Priority to AT89908819T priority Critical patent/ATE84363T1/en
Publication of EP0382827A1 publication Critical patent/EP0382827A1/en
Application granted granted Critical
Publication of EP0382827B1 publication Critical patent/EP0382827B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D25/00Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
    • F27D25/001Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag comprising breaking tools, e.g. hammers, drills, scrapers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00Charging; Discharging; Manipulation of charge
    • F27D3/14Charging or discharging liquid or molten material
    • F27D3/145Runners therefor

Definitions

  • the invention relates to an improvement in a method and a device for cleaning refractory-lined conveyor troughs for molten metals and slags, in particular on blast furnaces, the cleaning being carried out by means of rotating chains.
  • Vorricht_mg for cleaning refractory lined conveyor troughs by means of chains rotating on a rotatable drum is known.
  • a continuously variable motor should be used to drive the drum.
  • the speed By changing the speed, the intensity of the machining of the conveyor trough wall can be influenced, but it has proven difficult to recognize in advance which measure of machining is necessary at individual points.
  • changing the speed means that different deposits, different refractory materials to be removed, and rinsing of the channel wall cannot be processed in an optimal manner. Since dust is whirled up to a considerable extent during the cleaning process, measures were also necessary to ensure adequate functioning.
  • the invention has for its object to provide a method for cleaning fireproof-lined conveyor troughs for molten metals and slags, in particular for the device according to DE-PS 32 25 015, with which the cleaning process and the cleaning result on the channel lining is improved and also the Training device for performing this improved method.
  • the solution to this problem is specified in the main claim.
  • the subclaims relate to preferred developments of the method and preferred developments of the devices to be used in the method.
  • a motor is used to drive the drum, the current consumption and / or speed of which changes as a function of the load.
  • the chain ends striking the conveyor channel wall or sliding along it represent a load on the motor. From this load, which can be recognized, for example, from the current consumption, the distance between the drum and the conveyor channel wall can be concluded.
  • the refractory material on the surface of the channel wall is worn out and worn, it can still be knocked off relatively easily by the chains.
  • the refractory material is still perfect afterwards, it offers greater resistance to the chains. It is advantageous to have the chains work in an almost extended length on the channel wall, so that the material to be removed is practically detached by knocking the chain ends.
  • a short-circuit rotor motor is therefore preferred for driving the drum, the current consumption of which is continuously measured by an ammeter, the change in the current consumption preferably being corrected by displacing the rotating drum transversely to the conveyor trough in order to achieve a desired distance value for optimal machining of the conveyor trough wall and thus also maintain a current consumption corresponding to this.
  • a speed or another variable depending on the load could also be specified and monitored.
  • the value corresponding essentially to the distance of the drum from the conveyor trough wall can be supplied as a measuring signal to an electrical control circuit in which control pulses for an automatic transverse displacement of the drum in accordance with the processing and in particular in adaptation to the sometimes irregular course of the Channel wall are generated.
  • a suction device for extracting gases, smoke and dust during operation of the trough is usually provided on conveyor troughs, in particular on blast furnaces.
  • conveyor troughs in particular on blast furnaces.
  • the direction of rotation of the drive of the drum is reversible. The changing direction of rotation also avoids one-sided locking of the ends of the chains and increases their service life.
  • Fig. 1 shows a section through the conveyor trough with a view of the device
  • Fig. 2 is a plan view of the conveyor trough with the device indicated.
  • the drum 1 is driven by a motor 6, in particular a squirrel-cage motor, whose direction of rotation is reversible.
  • the device has a mobile frame 5.
  • the chassis 5 is moved by two wheels 21 driven by motors 29, which run on a guide rail 20.
  • Side guide rollers 22 are provided for lateral guidance along the rail 20.
  • a column 30 is arranged on the frame 5 and can be moved transversely to the conveyor trough 3 by means of a chain hoist, preferably a round link chain 33, via a motor 32.
  • the chain 33 is kept in a tensioned state, so that the displacement of the column 30 takes place without play and a fine adjustment is also possible.
  • a round link chain has proven itself very well as a robust, reliable means of movement for the present case, in which dust and chunks can also come into contact with the means of movement and in which there is a heat influence from the still hot channel.
  • the drum 1 and the drive motor 6 assigned to it are arranged on a vertically movable slide 31 which is guided on the column 30.
  • a round link chain 35 which is only partially shown in the figure, is also preferred for the height adjustment. The height is adjusted by means of the motor 34.
  • the device can be provided with an operating station 36.
  • the device is electrically connected via a cable drum 37, which can be provided with a device for tensioning the cable (not shown).
  • the electrical cables leading to the motors and the control station are not shown.
  • FIG. 1 At one end of the conveyor trough 3, for example at the end facing the blast furnace, not shown, there are suction devices 40 for gases and / or smoke which can be used to vacuum dust during the cleaning of the trough. If the device by means of the wheels running on the rail 20 21 is pushed in the direction of arrow 12, the drum 1 rotates with the chains 2 in the direction of arrow 13, for example at a speed of 750 rpm. The optimum speed in each case depends on the length of the chain ends and the chain weight, and possibly also on the quality of the wall.
  • a change in the current consumption of the motor 6 indicates that the contact between the wall and the ends of the chains no longer corresponds to the machining conditions considered to be optimal, so that an adjustment by lateral displacement of the drum according to arrow 10 is necessary.
  • This readjustment may be necessary due to the different condition of the wall, but also due to the curve of the wall forming at individual points. For example, stronger rinsing off of the refractory material occurs in the part of the conveyor trough into which the pig iron flows, so that after some time the trough widening to which the cleaning device is to be adapted takes place. This adjustment can take place automatically depending on the current consumption of the motor.
  • Fig. 2 the cleaning of the right wall of the conveyor trough 3 is indicated.
  • the direction of rotation of the drum 1 is selected so that material chipped off the gutter is thrown in the direction of the suction 40.
  • the device is moved back to its starting position and the drum 1 is shifted to the left side. You will be on this side with operated in the opposite direction of rotation, so that in turn the chipped material is thrown in the direction of the suction 40. It can be advantageous to advance the feed on both sides of the channel in the direction of the arrow 12, ie in the direction of the suction devices 40.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

Un dispositif de nettoyage de rigoles de transport (3) à revêtement ignifuge pour métaux fondus et scories comprend des chaînes (2) agencées sur un tambour rotatif (1). Un moteur (6) dont la consommation de courant et/ou le régime se modifient en fonction de la charge est utilisé pour entraîner le tambour (1). Cette modification par rapport à une valeur de consigne prédéterminée est utilisée pour déplacer le tambour (1) transversalement à la rigole de transport (3) et pour obtenir un traitement optimal des parois de la rigole, qui est uniquement possible avec un écartement donné entre les parois et le tambour (1) et avec une charge du moteur (6) qui correspond à peu près audit écartement. Le sens d'entraînement du tambour (1) est réversible, de sorte que pendant le traitement des deux côtés de la rigole de transport (3), le matériau enlevé est rejeté dans la même direction.A device for cleaning transport channels (3) with a flame retardant coating for molten metals and slag comprises chains (2) arranged on a rotating drum (1). A motor (6) whose current consumption and / or speed changes depending on the load is used to drive the drum (1). This modification with respect to a predetermined setpoint is used to move the drum (1) transversely to the transport channel (3) and to obtain an optimal treatment of the walls of the channel, which is only possible with a given spacing between the channels. walls and the drum (1) and with a load of the motor (6) which corresponds approximately to said spacing. The driving direction of the drum (1) is reversible, so that during the processing of both sides of the transport channel (3), the removed material is rejected in the same direction.

Description

Verfahren und Vorrichtung zum Reinigen einer FörderrinneMethod and device for cleaning a conveyor trough
BesciireibungRubbing
Die Erfindung bezieht sich auf eine Verbesserung eines Verfahrens und einer Vorrichtung zum Reinigen von feuerfest ausgekleideten Förderrinnen für schmelzflüssige Metalle und Schlacken, insbesondere an Hochöfen, wobei die Reinigung mittels rotierender Ketten erfolgt.The invention relates to an improvement in a method and a device for cleaning refractory-lined conveyor troughs for molten metals and slags, in particular on blast furnaces, the cleaning being carried out by means of rotating chains.
Aus DE-PS 32 25 015 ist eine Vorricht_mg zum Reinigen von feuerfest ausgekleideten Förderrinnen mittels an einer rotierbaren Trommel umlaufender Ketten bekannt. Hierbei sollte ein stufenlos regelbarer Motor für den Antrieb der Trommel verwendet werden. Durch die Änderung der Drehzahl kann zwar die Intensität der Bearbeitung der Förderrinnenwand beeinflußt werden, es hat sich aber als schwierig erwiesen, im voraus zu erkennen, welches Maß der Bearbeitung an einzelnen Stellen notwendig ist. Durch Änderung der Drehzahl können jedenfalls unterschiedliche Ablagerungen, unterschiedlich zu beseitigendes verbrauchtes Feuerfestmaterial sowie Ausspülungen der Rinnenwand nicht in optimaler Weise bearbeitet werden. Da bei dem Reinigungsvorgang in einem erheblichen Umfange Staub aufgewirbelt wird, waren darüberhinaus Maßnahmen notwendig, trotzdem eine ausreichende Funktion zu sichern.From DE-PS 32 25 015 a Vorricht_mg for cleaning refractory lined conveyor troughs by means of chains rotating on a rotatable drum is known. A continuously variable motor should be used to drive the drum. By changing the speed, the intensity of the machining of the conveyor trough wall can be influenced, but it has proven difficult to recognize in advance which measure of machining is necessary at individual points. In any case, changing the speed means that different deposits, different refractory materials to be removed, and rinsing of the channel wall cannot be processed in an optimal manner. Since dust is whirled up to a considerable extent during the cleaning process, measures were also necessary to ensure adequate functioning.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Reinigen von feuerfest ausgekleideten Förderrinnen für schmelzflüssige Metalle und Schlacken insbesondere für die Vorrichtung gemäß DE-PS 32 25 015 zu schaffen, mit dem der Reinigungsvorgang und das Reinigungsergebnis an der Rinnenauskleidung verbessert wird und darüberhinaus auch die Vorrichtung zur Durchführung dieses verbesserten Verfahrens auszubilden. Die Lösung dieser Aufgabe ist in dem Hauptanspruch angegeben. Die ünteransprüche betreffen bevorzugte Weiterbildungen des Verfahrens ind bevorzugte Ausbildungen der bei dem Verfahren zu verwendenden Vorrichtungen.The invention has for its object to provide a method for cleaning fireproof-lined conveyor troughs for molten metals and slags, in particular for the device according to DE-PS 32 25 015, with which the cleaning process and the cleaning result on the channel lining is improved and also the Training device for performing this improved method. The solution to this problem is specified in the main claim. The subclaims relate to preferred developments of the method and preferred developments of the devices to be used in the method.
Nach der Erfindung wird für den Antrieb der Tromel ein Motor verwendet, dessen Stromaufnahme und/oder Drehzahl sich in Abhängigkeit von der Belastung ändert. Die auf die Förderrinnenwand schlagenden oder an ihr entlangschleifenden Kettenenden stellen eine Belastung für den Motor dar. Aus dieser Belastung, die beispielsweise anhand der Stromaufnahme erkennbar ist, kann auf den Abstand zwischen Trommel und Förderrinnenwand geschlossen werden. Soweit das Feuerfestmaterial an der Oberflache der Rinnenwand verbraucht und mürbe ist, läßt es sich durch die Ketten noch verhältnismäßig leicht abschlagen. Soweit danach das Feuerfestmaterial noch einwandfrei ist, setzt es den Ketten einen größeren Widerstand entgegen. Vorteilhaft ist es, die Ketten in fast ausgestreckter Länge an der Rinnenwand arbeiten zu lassen, so daß das zu entfernende Material praktisch durch Schläge der Kettenenden abgelöst wird. Für den Antrieb der Trommel wird daher ein Kurzschlußläufermotor bevorzugt, dessen Stromaufnahme laufend durch ein Amperemeter gemessen wird, wobei vorzugsweise die Änderung der Stromaufnahme durch eine Verschiebung der rotierenden Trommel quer zur Förderrinne korrigiert wird, um einen für eine optimale Bearbeitung der Förderrinnenwand erwünschten Abstandswert und damit auch eine diesem entsprechende Stromaufnahme einzuhalten. Anstelle der Stromaufnahme könnte auch eine Drehzahl oder eine andere von der Belastung abhängige Größe vorgegeben und überwacht werden.According to the invention, a motor is used to drive the drum, the current consumption and / or speed of which changes as a function of the load. The chain ends striking the conveyor channel wall or sliding along it represent a load on the motor. From this load, which can be recognized, for example, from the current consumption, the distance between the drum and the conveyor channel wall can be concluded. As far as the refractory material on the surface of the channel wall is worn out and worn, it can still be knocked off relatively easily by the chains. As far as the refractory material is still perfect afterwards, it offers greater resistance to the chains. It is advantageous to have the chains work in an almost extended length on the channel wall, so that the material to be removed is practically detached by knocking the chain ends. A short-circuit rotor motor is therefore preferred for driving the drum, the current consumption of which is continuously measured by an ammeter, the change in the current consumption preferably being corrected by displacing the rotating drum transversely to the conveyor trough in order to achieve a desired distance value for optimal machining of the conveyor trough wall and thus also maintain a current consumption corresponding to this. Instead of the current consumption, a speed or another variable depending on the load could also be specified and monitored.
Der im wesentlichen dem Abstand der Trommel von der Förderrinnenwand entsprechende Wert kann als Meßsignal einem elektrischen Regelkreis zugeführt werden, in dem Steuerimpulse zu einer automatischen Querverschiebung der Trommel entsprechend der Bearbeitung und insbesondere in Anpassung an den z.T. unregelmäßigen Verlauf der Rinnenwand erzeugt werden.The value corresponding essentially to the distance of the drum from the conveyor trough wall can be supplied as a measuring signal to an electrical control circuit in which control pulses for an automatic transverse displacement of the drum in accordance with the processing and in particular in adaptation to the sometimes irregular course of the Channel wall are generated.
An Förderrinnen, insbesondere an Hochöfen, ist üblicherweise eine Absaugeinrichtung zum Absaugen von Gasen, Rauch und Staub während des Rinnenbetriebes vorgesehen. Für den Reinigungsvorgang hat es sich als vorteilhaft herausgestellt, die Trommel beim Putzen der beiden Rinnenlängsseiten jeweils in Richtung auf die Absaugung zu drehen und den anfallenden Staub abzusaugen. Dazu wird vorgesehen, daß die Drehrichtung des Antriebs der Trommel umkehrbar ist. Durch die wechselnde Drehrichtung wird außerdem ein einseitiger Verschluß der Enden der Ketten vermieden und deren Lebensdauer erhöht.A suction device for extracting gases, smoke and dust during operation of the trough is usually provided on conveyor troughs, in particular on blast furnaces. For the cleaning process, it has been found to be advantageous to turn the drum in the direction of the suction when cleaning the two longitudinal sides of the channel and to suction off the dust that is produced. For this purpose, it is provided that the direction of rotation of the drive of the drum is reversible. The changing direction of rotation also avoids one-sided locking of the ends of the chains and increases their service life.
Weitere Einzelheiten der Vorrichtung und des Verfahrens werden anhand des auf den Zeichnungen schematisch dargestellten Ausführungsbeispiels beschrieben.Further details of the device and the method are described with reference to the exemplary embodiment shown schematically in the drawings.
Es zeigenShow it
Fig. 1 einen Schnitt durch die Förderrinne mit einer Ansicht auf die Vorrichtung undFig. 1 shows a section through the conveyor trough with a view of the device and
Fig. 2 eine Draufsicht auf die Förderrinne mit angedeuteter Vorrichtung.Fig. 2 is a plan view of the conveyor trough with the device indicated.
An der Trommel 1 befindet sich eine Vielzahl von Kettenenden 2. Die Enden der Ketten schlagen gegen die Wand der Förderrinne 3 und entfernen von ihr Schlacke und verbrauchtes Material der Auskleidung 4. Nach dem Putzen wird die Oberfläche der Rinne durch neues Material ausgebessert. Die Trommel 1 wird durch einen Motor 6, insbesondere einen Kurzschlußläufermotor, angetrieben, dessen Drehrichtung umkehrbar ist. Die Vorrichtung weist ein fahrbares Gestell 5 auf. Das Fahrgestell 5 wird durch zwei über Motore 29 angetriebene Räder 21 , die auf einer Führungsschiene 20 laufen, bewegt. Zur seitlichen Führung entlang der Schiene 20 sind Seitenführungsrollen 22 vorgesehen. Auf der anderen Seite der Rinne 3 befindet sich ein Stützrad 23. Auf dem Gestell 5 ist eine Säule 30 angeordnet und kann mittels eines Kettenzuges, vorzugsweise einer Rundgliederkette 33, über einen Motor 32 quer zur Förderrinne 3 verschoben werden. Die Kette 33 wird in einem gespannten Zustand gehalten, so daß die Verschiebung der Säule 30 spielfrei erfolgt und auch eine Feineinstellung möglich ist. Eine Rundgliederkette hat sich als ein robustes, zuverlässiges Bewegungsmittel für den vorliegenden Fall, bei dem Staub und abgeschlagene Brocken auch an die Bewegungsmittel geraten können und bei dem ein Wärmeeinfluß der noch heißen Rinne vorhanden ist, sehr gut bewährt.There are a large number of chain ends 2 on the drum 1. The ends of the chains strike the wall of the conveyor trough 3 and remove slag and used material from the lining 4. After cleaning, the surface of the trough is repaired by new material. The drum 1 is driven by a motor 6, in particular a squirrel-cage motor, whose direction of rotation is reversible. The device has a mobile frame 5. The chassis 5 is moved by two wheels 21 driven by motors 29, which run on a guide rail 20. Side guide rollers 22 are provided for lateral guidance along the rail 20. On the other side of the trough 3 there is a support wheel 23. A column 30 is arranged on the frame 5 and can be moved transversely to the conveyor trough 3 by means of a chain hoist, preferably a round link chain 33, via a motor 32. The chain 33 is kept in a tensioned state, so that the displacement of the column 30 takes place without play and a fine adjustment is also possible. A round link chain has proven itself very well as a robust, reliable means of movement for the present case, in which dust and chunks can also come into contact with the means of movement and in which there is a heat influence from the still hot channel.
Die Trommel 1 und der ihr zugeordnete Antriebsmotor 6 sind an einem vertikal beweglichen Schlitten 31 angeordnet, der an der Säule 30 geführt wird. Auch für die Höhenverstellung wird eine Rundgliederkette 35, die in der Abbildung nur teilweise dargestellt ist, bevorzugt. Die Höhenverstellung erfolgt mittels des Motors 34.The drum 1 and the drive motor 6 assigned to it are arranged on a vertically movable slide 31 which is guided on the column 30. A round link chain 35, which is only partially shown in the figure, is also preferred for the height adjustment. The height is adjusted by means of the motor 34.
Die Vorrichtung kann mit einem Bedienungsstand 36 versehen sein. Über eine Kabeltrommel 37, die mit einer nicht dargestellten Einrichtung zum Spannen des Kabels versehen sein kann, erfolgt der elektrische Anschluß der Vorrichtung. Die zu den Motoren und dem Bedienungsstand führenden elektrischen Leitung sind nicht gezeigt.The device can be provided with an operating station 36. The device is electrically connected via a cable drum 37, which can be provided with a device for tensioning the cable (not shown). The electrical cables leading to the motors and the control station are not shown.
Aus Fig. 2 ist die Arbeitsweise der Vorrichtung ersichtlich. An einem Ende der Förderrinne 3, beispielsweise an dem Ende, das dem nicht gezeigten Hochofen zugekehrt ist, befinden sich Äbsaugeinrichtungen 40 für Gase und/oder Rauch, die während der Reinigung der Rinne zum Absaugen von Staub eingesetzt werden können. Wenn die Vorrichtung mittels der auf der Schiene 20 laufenden Räder 21 in Richtung des Pfeiles 12 vorgeschoben wird, dreht sich die Trommel 1 mit den Ketten 2 in Richtung des Pfeiles 13, beispielsweise mit einer Drehzahl von 750 U/min. Die jeweils optimale Drehzahl ist abhängig von der Länge der Kettenenden und dem Kettengewicht sowie gegebenenfalls auch von der Qualität der Wand. Eine Veränderung der Stromaufnahme des Motors 6 zeigt an, daß der Kontakt zwischen Wand und Enden der Ketten nicht mehr den als optimal angesehenen Bearbeitungsverhältnissen entspricht, so daß ein Nachstellen durch seitliche Verschiebung der Trommel entsprechend dem Pfeil 10 notwendig ist. Dieses Nachstellen kann durch unterschiedlichen Zustand der Wand, aber auch durch einen sich an einzelnen Stellen bogenförmig ausbildenden Verlauf der Wand notwendig werden. Beispielsweise treten in dem Teil der Förderrinne, in den das Roheisen fließt, stärkere Abspülungen des Feuerfestmaterials auf, so daß hier nach einiger Zeit eine Verbreiterung der Rinne stattfindet, der die Reinigungseinrichtung anzupassen ist. Diese Anpassung kann automatisch in Abhängigkeit von der Stromaufnahme des Motors erfolgen. Da die Reinigungsstelle selbst von der Bedienungsperson wegen der Staubentwicklung und der Abdeckung durch das Gestell 5 nicht eingesehen werden kann, würde ein Nachführen durch seitliche Verschiebung von Hand ausschließlich nach dem visuellen Ergebnis der geputzten Wand für Abweichungen vom Wandverlauf nicht zur rechten Zeit kommen. Ein Nachführen entsprechend dem Sollwert der Stromaufnahme durch die Bedienungsperson gestattet zwar eine verhältnismäßig schnelle Anpassung, schließt aber Bedienungsfehler nicht aus. Eine automatische Anpassung ist dagegen, insbesondere wegen der schwierigen Arbeitsbedingungen in Hochofennähe, von Vorteil.The mode of operation of the device can be seen from FIG. At one end of the conveyor trough 3, for example at the end facing the blast furnace, not shown, there are suction devices 40 for gases and / or smoke which can be used to vacuum dust during the cleaning of the trough. If the device by means of the wheels running on the rail 20 21 is pushed in the direction of arrow 12, the drum 1 rotates with the chains 2 in the direction of arrow 13, for example at a speed of 750 rpm. The optimum speed in each case depends on the length of the chain ends and the chain weight, and possibly also on the quality of the wall. A change in the current consumption of the motor 6 indicates that the contact between the wall and the ends of the chains no longer corresponds to the machining conditions considered to be optimal, so that an adjustment by lateral displacement of the drum according to arrow 10 is necessary. This readjustment may be necessary due to the different condition of the wall, but also due to the curve of the wall forming at individual points. For example, stronger rinsing off of the refractory material occurs in the part of the conveyor trough into which the pig iron flows, so that after some time the trough widening to which the cleaning device is to be adapted takes place. This adjustment can take place automatically depending on the current consumption of the motor. Since the cleaning point itself cannot be seen by the operator because of the dust development and the covering by the frame 5, a tracking by lateral displacement by hand solely based on the visual result of the cleaned wall for deviations from the course of the wall would not come at the right time. An adjustment according to the setpoint value of the current consumption by the operator allows a relatively quick adjustment, but does not exclude operating errors. Automatic adjustment, on the other hand, is advantageous, particularly because of the difficult working conditions near the blast furnace.
In Fig. 2 ist die Reinigung der rechten Wand der Förderrinne 3 angedeutet. Dabei ist die Drehrichtung der Trommel 1 so gewählt, daß von der Rinne abgeschlagenes Material in Richtung auf die Äbsaugung 40 geworfen wird. Zur Reinigung der anderen Wand wird die Vorrichtung in ihre Ausgangslage zurückgefahren und die Trommel 1 an die linke Seite verschoben. Sie wird an dieser Seite mit entgegengesetzter Drehrichtung betrieben, so daß wiederum das abgeschlagene Material in Richtung auf die Absauger 40 geschleudert wird. Es kann von Vorteil sein, den Vorschub auf beiden Seiten der Rinne in der Richtung des Pfeiles 12 vorzunehmen, d.h. in Richtung auf die Absauger 40. In Fig. 2 the cleaning of the right wall of the conveyor trough 3 is indicated. The direction of rotation of the drum 1 is selected so that material chipped off the gutter is thrown in the direction of the suction 40. To clean the other wall, the device is moved back to its starting position and the drum 1 is shifted to the left side. You will be on this side with operated in the opposite direction of rotation, so that in turn the chipped material is thrown in the direction of the suction 40. It can be advantageous to advance the feed on both sides of the channel in the direction of the arrow 12, ie in the direction of the suction devices 40.

Claims

Verfahren und Vorrichtung zum Reinigen einer FörderrinnePatentansprüche Method and device for cleaning a conveyor trough
1. Verfahren zum Reinigen von feuerfest ausgekleideten Förderrinnen für schmelzflüssige Metalle und Schlacken mittels Ketten, die an einer rotierenden Trommel angeordnet sind, deren Position an einem schienengeführten Fahrgestell seitlich und in der Höhe verstellbar ist, dadurch gekennzeichnet, daß für den Antrieb der Trommel ein Motor verwendet wird, dessen Stromaufnähme und/oder Drehzahl sich in Abhängigkeit von der Belastung ändert, daß die Änderung wenigstens eines dieser Werte erfaßt wird und daß entsprechend dem erfaßten Wert durch eine Verschiebung der rotierenden Trommel quer zur Förderrinne der für eine optimale Bearbeitung der Förderrinnenwand erwünschte Abstandswert eingestellt wird.1. A method for cleaning fireproof-lined conveyor troughs for molten metals and slags by means of chains which are arranged on a rotating drum, the position of which is adjustable laterally and in height on a rail-guided chassis, characterized in that a motor for driving the drum is used, the current consumption and / or speed changes depending on the load, that the change in at least one of these values is detected and that, according to the detected value, by moving the rotating drum transversely to the conveyor trough, the distance value desired for optimal machining of the conveyor trough wall is set.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß der erfaßte Wert als Meßsignal in einem Regelkreis in Steuerimpulse zur automatischen Querverschiebung der Trommel in Anpassung an den Verlauf der Rinnenwand umgewandelt wird.2. The method according to claim 1, characterized in that the detected value is converted as a measurement signal in a control loop into control pulses for automatic transverse displacement of the drum in adaptation to the course of the channel wall.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Trommel mit den die Rinnenwand bearbeitenden Ketten in Richtung auf eine im wesentlichen am Ende der Förderrinne vorgesehene Sta babsaugung gedreht wird.3. The method according to claim 1 or 2, characterized in that the drum is rotated with the chains processing the channel wall in the direction of a substantially provided at the end of the conveyor channel Sta babsaugung.
4. Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 3, bestehend aus einem in Längsrichtung der Förderrine verschiebbaren Fahrgestell (5) mit einer quer verfahrbaren Säule (30) , an dem höhenverstellbar die rotierbare Trommel (1 ) mit den Ketten (2) angeordnet ist, dadurch gekennzeichnet, daß zum Antrieb der Trommel (1 ) ein auf die Belastung infolge des Widerstandes der Kettenenden (2) an der Wand der Förderrinne (3) reagierender Motor (6) , vorzugsweise ein Kurzschlußläufer, auf einem höhenverstellbaren Schlitten (31) an der Säule (30) angeordnet ist.4. Device for carrying out the method according to one of claims 1 to 3, consisting of a movable in the longitudinal direction of the conveyor chute (5) with a transversely movable column (30) on the height adjustable, the rotatable drum (1) with the chains (2 ) is arranged, characterized in that for driving the drum (1) a motor (6) reacting to the load due to the resistance of the chain ends (2) on the wall of the conveyor trough (3), preferably a Short-circuit rotor, on a height-adjustable carriage (31) on the column (30) is arranged.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, die Drehrichtung der Trommel (1) umkehrbar ist.5. The device according to claim 4, characterized in that the direction of rotation of the drum (1) is reversible.
6. Vorrichtung nach Anspruch 4 oder 5 mit einer auf einem Fahrgestell (5) quer zur Förderrinne verschiebbaren Säule (30) und einem die Trommel (1 ) tragenden, an der Säule (30) vertikal verschiebbaren Schlitten (31), dadurch gekennzeichnet, daß die Verschiebung der Säule (30) und des Schlittens (31) mittels eines Antriebs durch Rundgliederketten (33, 35) vorgesehen ist. 6. Apparatus according to claim 4 or 5 with a column (30) displaceable transversely to the conveyor trough on a chassis (5) and a carriage (31) carrying the drum (1) and vertically displaceable on the column (30), characterized in that the displacement of the column (30) and the slide (31) by means of a drive by means of round link chains (33, 35) is provided.
EP89908819A 1988-08-12 1989-08-01 Process and device for cleaning conveying channels Expired - Lifetime EP0382827B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89908819T ATE84363T1 (en) 1988-08-12 1989-08-01 METHOD AND DEVICE FOR CLEANING A CONVEYOR CHUTE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3827400 1988-08-12
DE3827400A DE3827400A1 (en) 1988-08-12 1988-08-12 METHOD AND DEVICE FOR CLEANING A CONVEYOR

Publications (2)

Publication Number Publication Date
EP0382827A1 true EP0382827A1 (en) 1990-08-22
EP0382827B1 EP0382827B1 (en) 1993-01-07

Family

ID=6360721

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89908819A Expired - Lifetime EP0382827B1 (en) 1988-08-12 1989-08-01 Process and device for cleaning conveying channels

Country Status (7)

Country Link
US (1) US5014965A (en)
EP (1) EP0382827B1 (en)
JP (1) JPH03500425A (en)
DE (2) DE3827400A1 (en)
HU (1) HU208373B (en)
WO (1) WO1990001665A1 (en)
ZA (1) ZA895816B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9014109U1 (en) * 1990-10-11 1990-12-13 MBM Maschinenbau Mühldorf GmbH, 8260 Mühldorf Device for restoring the flatness of the loading surface of hardening trolleys
KR20020000930A (en) * 2000-06-22 2002-01-09 김영진 Fill method of liquid and its liquid receptacle
GB2493969B (en) * 2011-08-26 2013-08-07 Siemens Plc Slag dispersal device and method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR689771A (en) * 1930-01-15 1930-09-11 Improvements to survey facilities
FR2037007B1 (en) * 1969-04-30 1973-03-16 Inst Francais Du Petrole
DE3225015C1 (en) * 1982-07-03 1983-11-17 Stahlwerke Peine-Salzgitter Ag, 3150 Peine cleaning appts. for refractory lined runners - comprising chains mounted on rotating drum
GB8615431D0 (en) * 1986-06-24 1986-07-30 Somafer Sa Treatment of refractory lined transfer channels
DE3741073A1 (en) * 1987-12-04 1989-06-15 Intocast Gmbh METHOD AND DEVICE FOR RESTORING THE INPUT OF METALLURGICAL PANS

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9001665A1 *

Also Published As

Publication number Publication date
HUT57891A (en) 1991-12-30
HU894634D0 (en) 1991-11-28
US5014965A (en) 1991-05-14
DE3827400A1 (en) 1990-02-15
JPH03500425A (en) 1991-01-31
EP0382827B1 (en) 1993-01-07
WO1990001665A1 (en) 1990-02-22
ZA895816B (en) 1990-04-25
DE58903235D1 (en) 1993-02-18
HU208373B (en) 1993-09-28

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