EP0164331B1 - Arrangement for cleaning the lance head of a lance introducible into a metallurgical vessel - Google Patents

Arrangement for cleaning the lance head of a lance introducible into a metallurgical vessel Download PDF

Info

Publication number
EP0164331B1
EP0164331B1 EP85890094A EP85890094A EP0164331B1 EP 0164331 B1 EP0164331 B1 EP 0164331B1 EP 85890094 A EP85890094 A EP 85890094A EP 85890094 A EP85890094 A EP 85890094A EP 0164331 B1 EP0164331 B1 EP 0164331B1
Authority
EP
European Patent Office
Prior art keywords
lance
head
cleaning
cleaning head
arrangement according
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.)
Expired
Application number
EP85890094A
Other languages
German (de)
French (fr)
Other versions
EP0164331A2 (en
EP0164331A3 (en
Inventor
Hellmuth Smejkal
Walter Rockenschaub
Johann Fohler
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.)
Primetals Technologies Austria GmbH
Original Assignee
Voestalpine 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 Voestalpine AG filed Critical Voestalpine AG
Publication of EP0164331A2 publication Critical patent/EP0164331A2/en
Publication of EP0164331A3 publication Critical patent/EP0164331A3/en
Application granted granted Critical
Publication of EP0164331B1 publication Critical patent/EP0164331B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4693—Skull removal; Cleaning of the converter mouth
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4606—Lances or injectors
    • C21C5/462—Means for handling, e.g. adjusting, changing, coupling

Definitions

  • the invention relates to a device for cleaning a lance head of a lance which can be introduced into a metallurgical vessel, in particular a lance carrying a measuring and / or sampling probe, with a cleaning head which is in contact with the lance head during the cleaning process and surrounds the lance head, the cleaning head and the lance is relatively movable in the direction of the lance axis.
  • a device of this type has the disadvantage that the rigidly arranged cleaning head is exposed to the emissions and the heat radiation from the metallurgical vessel. Furthermore, this known device is only suitable for cleaning cylinder surfaces on the lance, whereas the front end surface of the blowing lance cannot be cleaned.
  • a device for detoxifying a blow lance in which a striking tool, which is arranged laterally at a short distance next to the blow lance, can be moved to the blow lance, whereby the tool comes into contact with the cylindrical lance surface and comes on her clinging bear bears off. Careful cleaning and restoration of the exact original lance surface is just as impossible with this known device as cleaning the end face of the blowing lance.
  • lances carrying measuring and / or sampling probes the lance head of which dips into a slag layer during the sampling or measuring process.
  • Such lances such as those used to record temperature and carbon values in molten steel, work with probes that can only be used once, which are pushed onto a contact rod protruding from the front of the lance and again after the measurement has been carried out, i.e. after immersion in the molten steel be pulled off the contact rod. It is inevitable that slag and metal deposits form on the outside and front of the lance. Under certain circumstances - e.g.
  • the invention aims to avoid these disadvantages and difficulties and has as its object to create a device of the type described in the introduction with which it is possible to carefully clean the lance head on its side facing the molten bath in the metallurgical vessel.
  • the cleaning head and the lance can be brought into alignment with one another by means of an adjusting device and that the cleaning head can be set in a rotary movement oscillating about the axis of the lance by means of an oscillating device.
  • the cleaning head can be brought from a position to the side of the metallurgical vessel in alignment with the axis of the lance by means of an adjusting device (this can be done by pivoting or moving the lance using the adjusting device or by pivoting or moving the cleaning head using the adjusting device) , the cleaning head itself is not exposed to the emissions from the metallurgical vessel, so that no deposits can form on the cleaning head itself and that the cleaning head can work exactly at all times.
  • the cleaning head is at least split in two in the direction of the axis of the lance, the parts of the cleaning head being pivotable by means of a spreading device from a spreading position next to the lance head into a working position surrounding the lance head and vice versa.
  • the relative movement in the direction of the axis of the lance between the lance and the cleaning head is advantageously accomplished in that the cleaning head can be raised and lowered in the direction of the axis of the lance by means of a lifting and lowering device. This measure makes it possible to leave the lance in the rest position even during the cleaning process, and it is sufficient to raise or lower the much lighter cleaning head.
  • the cleaning head is expediently mounted on a vertical guide which is arranged on a support which is adjustable in the horizontal direction from and to the axis of the lance.
  • the cleaning head has a two-part housing in which a likewise two-part milling head is rotatably mounted, each of the two parts of the housing being articulated by means of an arm fastened to it on a support slidably mounted on the vertical guides.
  • the two parts of the milling head are expediently articulated by means of articulated rods on a double arm articulated centrally on the support, to which the oscillating device is articulated.
  • each arm is advantageously articulated via a respective articulated bracket to one end of a cross member that can be horizontally displaced from and to the cleaning head, which cross member can be displaced by means of the spreading device mounted on the support, the axes of which are expedient If the milling head is not oscillating, align the arms of the parts of the housing hinged to the support with the axes of the articulated rods hinged to the double arm.
  • the parts of the housing on the parting joints are expediently provided with centering projections which interlock when closed in the working position.
  • the teeth of the milling head preferably form an angle with one another that is smaller than the maximum angle of the rotational oscillation movement.
  • the profile of the teeth of the milling head is advantageously adapted to the profile of the lance head, as a result of which the entire part of the lance head, which is critical with regard to deposits, can be cleaned with a single cleaning process.
  • a measuring lance (also called sub-lance), which is positioned above the mouth 2 of a steelworks converter 3 at a distance 4 next to a blowing lance 5.
  • a contact rod 7 for a measuring probe which extends in the direction of the axis 8 of the lance 1, is provided on the lance head 6 of the measuring lance 1.
  • the lance can be raised and lowered by means of a drive, not shown.
  • the lance 1 dips with the measuring probe pushed onto the contact rod 7 into the melt located in the steelworks converter 3, specifically through the slag floating on the melt, the lance head 6 often being immersed in the slag.
  • the lance head 6 has on its end face 9 an annular recess 10 into which the upper end of the measuring probe can be inserted, so that the penetration of slag or melt between the measuring probe and the contact rod 7 can generally be prevented.
  • This recess 10 and the conical end face 9 of the lance head adjoining the recess must be kept clean of slag or metal deposits in order to ensure that after the measurement, i.e. after removing a measuring probe from the contact rod 7, to be able to pick up a new measuring probe perfectly, the contact between the contact points 11 located at the lower end of the contact rod and the corresponding contact points of the measuring probe being ensured.
  • a device 12 for cleaning the lance head 6 is provided, which is provided with a cleaning head 13, on the upper side of which a milling head 14 is arranged.
  • the cleaning head 13 is formed by two parts 13 ′, 13 ′′, which complement one another to form a hollow cylinder.
  • the parting joints 15 run vertically, that is to say through the axis 16 of the cleaning head 13.
  • the cleaning head 13 has a housing 17, which is likewise divided to which the likewise divided milling head 14 is rotatably supported in the horizontal and vertical directions by means of rollers 18.
  • Each part 17 ′, 17 ′′ of the housing 17 is each provided with a projecting arm 19 which is connected to a support 21 by means of a vertically extending axis 20 is pivotally attached, whereby the parts 17 ', 17 "of the housing 17 and the parts 14', 14" of the milling head 14 mounted in them can be moved like pliers, namely from a spreading position A shown in FIG. 3 with dash-dotted lines into a closed position Working position B, which is shown in Fig. 3 with full lines.
  • the support 21 is supported by means of two vertical guides 22 on a support 23 in the direction of the axis 16 of the cleaning head 13 so that it can be raised and lowered.
  • a pressure medium cylinder 24, which is articulated on the carrier, serves for lifting and lowering, the piston rod 25 of which is articulated on a rocker arm 26 which is articulated on the carrier 23 by means of a pivot axis 27.
  • a link 28 is articulated on the rocker arm 26, the other end of which is articulated to the support 21, so that a pivoting movement of the rocker arm 26 about its pivot axis 27 causes the support 21 to be raised and lowered.
  • a pressure medium cylinder 29 attached to the support 21 is used, the piston rod 30 of which engages approximately centrally on a cross member 31, which cross member 31 has one end 32, 33 in each case via a Articulated bracket 34 is connected in an articulated manner to an arm 19 projecting from the parts 17 ', 17 "of the housing 17.
  • a horizontally directed semicircular plate 36 is provided on each part 14 ′, 14 ′′ of the milling head 14, both of which lie within the housing 17 of the cleaning head 13.
  • One of the arms of the double arm 38 engages eccentrically, ie at a distance 40 from the pivot axis 39, the piston rod 41 of a pressure medium cylinder 42, which is supported on the support 21.
  • Fig. 3 are aligned with a non-oscillating milling head 14, i. H. in the middle position of the double arm 38, the axes 43 with which the articulated rods 37 are fastened to the double arm 38, with the axes 20 with which the arms 19 are articulated on the support 21.
  • the milling head parts 14 ′, 14 ′′ do not perform any rotational movement when the cleaning head 13 is spread or closed.
  • guide rollers 44 rotatably mounted on the cross member 31 are used. which are guided on a guide ruler 45, which is attached to the support 21.
  • both parts 17', 17" of the housing 17 are provided with centering projections 46 projecting beyond the parting lines 15 Mistake.
  • cylindrical guide surfaces 47 are also provided in the housing 17, each of which is formed by a half circular plate 48 on which the centering extensions 46 are advantageously provided.
  • radially arranged adjusting screws 49 are provided in the plates 36, the ends 50 of which abut the contact rod 7.
  • the teeth 51 of the milling head 14 have a profile adapted to the lance head 6. Seen in the floor plan, they form an angle 52 with one another that is smaller than the maximum angle of the rotary oscillation movement.
  • a cover 53 mounted on the milling head (it is also of a split design) serves to protect the rollers 18.
  • the support 23 carrying the support 21 can be displaced or swiveled laterally next to the converter 3 into the position D shown in FIGS. 2 and 3 in the direction of the double arrow 55 by means of an actuating device 54 in FIG. 1 which aligns the axis 16 of the cleaning head 13 brought into the working position B with the axis 8 of the lance 1.
  • the function of the device is as follows:
  • the carrier 23 of the device 12 is displaced or pivoted into the position D shown in FIGS. 2 and 3 by means of the adjusting device 54.
  • the parts 13 ', 13 "of the cleaning head 13 are in the spreading position A and the support 21 is in the lowered position shown in full lines in FIG. 2.
  • the parts 13', 13" of the cleaning head 13 are then pivoted into the working position B, the support 21 and thus the cleaning head 13 are raised to the position shown in dash-dotted lines in FIG. 2 and at the same time the milling head 14 is set in an oscillating rotary movement.
  • the cleaning head 13 is lowered and its parts 13 ′, 13 ′′ are brought into the spreading position A.
  • the carrier 23 is then pivoted or moved away from the region of the metallurgical vessel with the aid of the adjusting device 54.
  • the invention is not limited to the embodiment shown in the drawing, but can be modified in various ways. You can e.g. B. can also be used for removing metal nozzles and slag splashes attached to the nozzle star of blowing lances, the teeth of the milling head 14 being adapted to the contour of the nozzle star. In this case, the housing 17 is centered on the blowing lance itself; it extends from the milling head 14 upwards.
  • the device 12 according to the invention is suitable for cleaning lance heads of any kind, e.g. B. also for lances that are used in pans or other metallurgical vessels.
  • divisible brushes for example wire brushes, which are adapted to the contour of the lance head.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Reinigen eines Lanzenkopfes einer in ein metallurgisches Gefäss einbringbaren Lanze, insbesondere einer eine Mess- und/oder Probenahmesonde tragenden Lanze, mit einem mit dem Lanzenkopf während des Reinigungsvorganges in Kontakt stehenden und den Lanzenkopf umgebenden Reinigungskopf, wobei der Reinigungskopf und die Lanze in Richtung der Achse der Lanze relativbeweglich sind.The invention relates to a device for cleaning a lance head of a lance which can be introduced into a metallurgical vessel, in particular a lance carrying a measuring and / or sampling probe, with a cleaning head which is in contact with the lance head during the cleaning process and surrounds the lance head, the cleaning head and the lance is relatively movable in the direction of the lance axis.

Aus der DE-C-2364911 ist eine Vorrichtung dieser Art zum Reinigen eines Endes einer Blaslanze bekannt, wobei die Blaslanze von einem den Reinigungskopf bildenden, starr angeordneten Hohlkörper umgeben ist, in dem an der Oberfläche der Blaslanze anliegende und die Reinigung derselben durchführende Finger befestigt sind. Durch Heben der Lanze nach dem Blasvorgang wird die zylindrische Oberfläche der Blaslanze an den Fingern entlang geschliffen und dabei gereinigt.From DE-C-2364911 a device of this type for cleaning one end of a blowing lance is known, wherein the blowing lance is surrounded by a rigidly arranged hollow body forming the cleaning head, in which fingers resting against the surface of the blowing lance and cleaning them are attached are. By lifting the lance after the blowing process, the cylindrical surface of the blowing lance is ground along the fingers and cleaned in the process.

Eine Vorrichtung dieser Art weist den Nachteil auf, dass der starr angeordnete Reinigungskopf den Emissionen und der Wärmestrahlung aus dem metallurgischen Gefäss ausgesetzt ist. Weiter ist diese bekannte Vorrichtung nur zum Reinigen von Zylinderflächen an der Lanze geeignet, wogegen die vordere Stirnfläche der Blaslanze nicht gereinigt werden kann.A device of this type has the disadvantage that the rigidly arranged cleaning head is exposed to the emissions and the heat radiation from the metallurgical vessel. Furthermore, this known device is only suitable for cleaning cylinder surfaces on the lance, whereas the front end surface of the blowing lance cannot be cleaned.

Aus der DE-A-2652142 ist eine Vorrichtung zum Entschlacken einer Blaslanze bekannt, bei der ein Schlagwerkzeug, welches seitlich in geringer Distanz neben der Blaslanze angeordnet ist, zur Blaslanze verschoben werden kann, wodurch das Werkzeug mit der zylindrischen Lanzenoberfläche in Kontakt gelangt und an ihr anhaftende Bären abschlägt. Eine sorgfältige Reinigung und Wiederherstellung der genauen ursprünglichen Lanzenoberfläche ist mit dieser bekannten Vorrichtung ebenso wenig möglich wie die Reinigung der Stirnfläche der Blaslanze.From DE-A-2652142 a device for detoxifying a blow lance is known, in which a striking tool, which is arranged laterally at a short distance next to the blow lance, can be moved to the blow lance, whereby the tool comes into contact with the cylindrical lance surface and comes on her clinging bear bears off. Careful cleaning and restoration of the exact original lance surface is just as impossible with this known device as cleaning the end face of the blowing lance.

Ein besonderes Problem ergibt sich bei Mess-und/oder Probenahmesonden tragenden Lanzen, deren Lanzenkopf während des Probenehmens bzw. Messvorganges in eine Schlackenschicht eintaucht. Solche Lanzen, wie sie beispielsweise zur Erfassung von Temperatur- und Kohlenstoffwerten in Stahlschmelzen verwendet werden, arbeiten mit nur einmal verwendbaren Sonden, welche auf einen aus der Stirnseite der Lanze herausragenden Kontaktstab aufgeschoben und nach durchgeführter Messung, also nach dem Eintauchen in die Stahlschmelze, wieder von dem Kontaktstab abgezogen werden. Dabei ist es unvermeidbar, dass sich Ansätze aus Schlacke und Metall an der Aussen- und Stirnseite der Lanze bilden. Es kann unter Umständen - z. B, bei schlecht sitzenden Sonden - Schlacke bzw. Metall zwischen die Stirnfläche der Lanze und der an dieser Stirnfläche anliegenden Stirnfläche der Sonde eindringen. Solche Ansätze können, wenn sie nicht entfernt werden, bei Aufschieben einer neuen Sonde einen exakten Kontakt der Messleitungen zwischen der Sonde und dem Kontaktstab verhindern, wodurch es zu Fehlmessungen kommen kann.A particular problem arises in the case of lances carrying measuring and / or sampling probes, the lance head of which dips into a slag layer during the sampling or measuring process. Such lances, such as those used to record temperature and carbon values in molten steel, work with probes that can only be used once, which are pushed onto a contact rod protruding from the front of the lance and again after the measurement has been carried out, i.e. after immersion in the molten steel be pulled off the contact rod. It is inevitable that slag and metal deposits form on the outside and front of the lance. Under certain circumstances - e.g. B, in the case of poorly fitting probes - slag or metal penetrate between the end face of the lance and the end face of the probe lying against this end face. If they are not removed, such approaches can prevent an exact contact of the measuring lines between the probe and the contact rod when a new probe is pushed on, which can lead to incorrect measurements.

Die Erfindung bezweckt die Vermeidung dieser Nachteile und Schwierigkeiten und stellt sich die Aufgabe, eine Vorrichtung der eingangs beschriebenen Art zu schaffen, mit der es möglich ist, den Lanzenkopf an seiner dem Schmelzenbad im metallurgischen Gefäss zugewandten Seite sorgfältig zu reinigen. Insbesondere soll es möglich sein, Probenahmesonden tragende Lanzen an ihrer Stirnseite so sauber zu halten, dass ein Eindringen von Schlacke während des Messvorganges, bei dem der Lanzenkopf zumindest in die das Bad bedeckende Schlackenschicht eingetaucht wird, zwischen die Mess- und/oder Probenahmesonde und der Stirnseite der Lanze vermieden wird.The invention aims to avoid these disadvantages and difficulties and has as its object to create a device of the type described in the introduction with which it is possible to carefully clean the lance head on its side facing the molten bath in the metallurgical vessel. In particular, it should be possible to keep lances carrying sampling probes so clean on their end faces that slag penetration during the measuring process, in which the lance head is at least immersed in the slag layer covering the bath, between the measuring and / or sampling probe and the Front of the lance is avoided.

Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass der Reinigungskopf und die Lanze mittels einer Stelleinrichtung in zueinander fluchtende Position bringbar sind und dass der Reinigungskopf mittels einer Oszilliereinrichtung in eine um die Achse der Lanze oszillierende Drehbewegung versetzbar ist.This object is achieved according to the invention in that the cleaning head and the lance can be brought into alignment with one another by means of an adjusting device and that the cleaning head can be set in a rotary movement oscillating about the axis of the lance by means of an oscillating device.

Infolge der oszillierenden Drehbewegung ist eine Entfernung sämtlicher Ansätze, wie Schlacken-und Metallspritzer, am Lanzenkopf und eine genaue Wiederherstellung der ursprünglichen Kontur des Lanzenkopfes möglich. Dadurch, dass der Reinigungskopf mittels einer Stelleinrichtung von einer Lage seitlich neben dem metallurgischen Gefäss in mit der Achse der Lanze fluchtende Stellung bringbar ist (dies kann durch Verschwenken oder Verschieben der Lanze mittels der Stelleinrichtung oder durch Verschwenken oder Verschieben des Reinigungskopfes mittels der Stelleinrichtung geschehen), ist der Reinigungskopf selbst den Emissionen aus dem metallurgischen Gefäss nicht ausgesetzt, so dass sich am Reinigungskopf selbst keine Ansätze bilden können und ein exaktes Arbeiten des Reinigungskopfes jederzeit sichergestellt ist.As a result of the oscillating rotary movement, it is possible to remove all the deposits, such as slag and metal splashes, on the lance head and to restore the original contour of the lance head exactly. Characterized in that the cleaning head can be brought from a position to the side of the metallurgical vessel in alignment with the axis of the lance by means of an adjusting device (this can be done by pivoting or moving the lance using the adjusting device or by pivoting or moving the cleaning head using the adjusting device) , the cleaning head itself is not exposed to the emissions from the metallurgical vessel, so that no deposits can form on the cleaning head itself and that the cleaning head can work exactly at all times.

Um den Reinigungskopf ohne grössere Vertikalbewegungen in Richtung der Achse der Lanze zum Lanzenkopf zu bringen - also bei Verwendung eines Kontaktstabes nicht über die gesamte Länge des Kontaktstabes schieben zu müssen - ist gemäss einer bevorzugten Ausführungsform der Reinigungskopf in Richtung der Achse der Lanze zumindest zweigeteilt ausgebildet, wobei die Teile des Reinigungskopfes mittels einer Spreizeinrichtung aus einer Spreizposition neben dem Lanzenkopf in eine den Lanzenkopf geschlossen umgebendeArbeitsposition und umgekehrtverschwenkbar sind.In order to bring the cleaning head to the lance head without major vertical movements in the direction of the axis of the lance - that is, when using a contact rod, it does not have to be pushed over the entire length of the contact rod - according to a preferred embodiment, the cleaning head is at least split in two in the direction of the axis of the lance, the parts of the cleaning head being pivotable by means of a spreading device from a spreading position next to the lance head into a working position surrounding the lance head and vice versa.

Die Relativbewegung in Richtung der Achse der Lanze zwischen der Lanze und dem Reinigungskopf wird vorteilhaft dadurch bewerkstelligt, dass der Reinigungskopf mittels einer Hub- und Senkeinrichtung in Richtung der Achse der Lanze heb-und senkbar ist. Durch diese Massnahme ist es möglich, die Lanze selbst während des Reinigungsprozesses in Ruhestellung zu belassen, und es genügt, den wesentlich leichteren Reinigungskopf zu heben bzw. zu senken.The relative movement in the direction of the axis of the lance between the lance and the cleaning head is advantageously accomplished in that the cleaning head can be raised and lowered in the direction of the axis of the lance by means of a lifting and lowering device. This measure makes it possible to leave the lance in the rest position even during the cleaning process, and it is sufficient to raise or lower the much lighter cleaning head.

Zweckmässig ist der Reinigungskopf an einer vertikalen Führung gelagert, die an einem in horizontaler Richtung von und zur Achse der Lanze verstellbaren Träger angeordnet ist.The cleaning head is expediently mounted on a vertical guide which is arranged on a support which is adjustable in the horizontal direction from and to the axis of the lance.

Gemäss einer bevorzugten Ausführungsform weist der Reinigungskopf ein zweigeteiltes Gehäuse auf, in dem ein ebenfalls zweigeteilter Fräskopf drehbar gelagert ist, wobei jeder der beiden Teile des Gehäuses mittels je eines an ihm befestigten Armes an einem an den vertikalen Führungen verschiebbar gelagerten Support angelenkt sind.According to a preferred embodiment, the cleaning head has a two-part housing in which a likewise two-part milling head is rotatably mounted, each of the two parts of the housing being articulated by means of an arm fastened to it on a support slidably mounted on the vertical guides.

Zur einfachen Durchführung der oszillierenden Drehbewegung sind zweckmässig die beiden Teile des Fräskopfes mittels Gelenkstangen an einem am Support mittig angelenkten Doppelarm ahgelenkt, an dem exzentrisch die Oszilliereinrichtung angelenkt ist.To carry out the oscillating rotary movement in a simple manner, the two parts of the milling head are expediently articulated by means of articulated rods on a double arm articulated centrally on the support, to which the oscillating device is articulated.

Zur Bewegung der Teile des Reinigungskopfes aus der Spreizposition in die Arbeitsposition ist vorteilhaft jeder Arm über jeweils eine Gelenklasche an jeweils einem Ende eines horizontal von und zum Reinigungskopf verschiebbaren Querträgers angelenkt, welcher Querträger mittels der am Träger gegengelagerten Spreizeinrichtung verschiebbar ist, wobei zweckmässig die Achsen der am Support angelenkten Arme der Teile des Gehäuses bei nicht oszillierendem Fräskopf mit den Achsen der am Doppelarm angelenkten Gelenkstangen fluchten.In order to move the parts of the cleaning head from the spreading position into the working position, each arm is advantageously articulated via a respective articulated bracket to one end of a cross member that can be horizontally displaced from and to the cleaning head, which cross member can be displaced by means of the spreading device mounted on the support, the axes of which are expedient If the milling head is not oscillating, align the arms of the parts of the housing hinged to the support with the axes of the articulated rods hinged to the double arm.

Zum leichteren Ausrichten des Reinigungskopfes in zur Achse der Lanze fluchtende Stellung sind zweckmässig die Teile des Gehäuses an den Teilfugen mit beim Schliessen in Arbeitsposition ineinandergreifenden Zentrierfortsätzen versehen.To make it easier to align the cleaning head in the position aligned with the axis of the lance, the parts of the housing on the parting joints are expediently provided with centering projections which interlock when closed in the working position.

Vorzugsweise schliessen die Zähne des Fräskopfes miteinander einen Winkel ein, der kleiner ist als der Maximalwinkel der Drehoszillationsbewegung. Durch entsprechende Wahl der Zähnezahl ist es möglich, die Drehoszillationsbewegung, d. h. den Verdrehwinkel des Reinigungskopfes, gering zu halten.The teeth of the milling head preferably form an angle with one another that is smaller than the maximum angle of the rotational oscillation movement. By appropriate choice of the number of teeth, it is possible to rotate the rotary oscillation, ie. H. to keep the angle of rotation of the cleaning head low.

Vorteilhaft ist das Profil der Zähne des Fräskopfes dem Profil des Lanzenkopfes angepasst, wodurch man mit einem einmaligen Reinigungsvorgang den gesamten bezüglich Ablagerungen kritischen Teil des Lanzenkopfes reinigen kann.The profile of the teeth of the milling head is advantageously adapted to the profile of the lance head, as a result of which the entire part of the lance head, which is critical with regard to deposits, can be cleaned with a single cleaning process.

Die Erfindung ist nachfolgend anhand der Zeichnung an einem Ausführungsbeispiel näher erläutert, wobei

  • Fig. 1 eine Draufsicht auf die Vorrichtung in schematischer Darstellung, und
  • Fig. 2 eine teilweise geschnittene Seitenansicht der erfindungsgemässen Vorrichtung zeigen;
  • Fig. 3 ist eine Grundrissdarstellung der Vorrichtung.
The invention is explained below with reference to the drawing using an exemplary embodiment, wherein
  • Fig. 1 is a plan view of the device in a schematic representation, and
  • 2 shows a partially sectioned side view of the device according to the invention;
  • 3 is a plan view of the device.

Mit 1 ist eine Messlanze (auch Sub-Lanze genannt) bezeichnet, die oberhalb der Mündung 2 eines Stahlwerkskonverters 3 im Abstand 4 neben einer Blaslanze 5 in Stellung gebracht ist. Am Lanzenkopf 6 der Messlanze 1 ist ein Kontaktstab 7 für eine Messsonde, der sich in Richtung der Achse 8 der Lanze 1 erstreckt, vorgesehen. Die Lanze kann mittels eines nicht dargestellten Antriebes gehoben und gesenkt werden. Während des Messvorganges taucht die Lanze 1 mit der auf dem Kontaktstab 7 aufgeschobenen Messsonde in die im Stahlwerkskonverter 3 befindliche Schmelze, und zwar durch die auf der Schmelze schwimmende Schlacke hindurch, wobei der Lanzenkopf 6 oftmals in die Schlacke eingetaucht wird.1 designates a measuring lance (also called sub-lance), which is positioned above the mouth 2 of a steelworks converter 3 at a distance 4 next to a blowing lance 5. A contact rod 7 for a measuring probe, which extends in the direction of the axis 8 of the lance 1, is provided on the lance head 6 of the measuring lance 1. The lance can be raised and lowered by means of a drive, not shown. During the measuring process, the lance 1 dips with the measuring probe pushed onto the contact rod 7 into the melt located in the steelworks converter 3, specifically through the slag floating on the melt, the lance head 6 often being immersed in the slag.

Der Lanzenkopf 6 weist an seiner Stirnseite 9 eine ringförmige Ausnehmung 10 auf, in die das obere Ende der Messsonde einfügbar ist, so dass das Eindringen von Schlacke bzw. Schmelze zwischen die Messsonde und den Kontaktstab 7 in der Regel verhindert werden kann. Diese Ausnehmung 10 und die an die Ausnehmung anschliessende kegelige Stirnseite 9 des Lanzenkopfes müssen von Schlackenansätzen bzw. Metallansätzen sauber gehalten werden, um nach durchgeführter Messung, d.h. nach Abziehen einer Messsonde vom Kontaktstab 7, eine neue Messsonde einwandfrei aufnehmen zu können, wobei der Kontakt zwischen den am unteren Ende des Kontaktstabes befindlichen Kontaktstellen 11 und den korrespondierenden Kontaktstellen der Messsonde sichergestellt ist.The lance head 6 has on its end face 9 an annular recess 10 into which the upper end of the measuring probe can be inserted, so that the penetration of slag or melt between the measuring probe and the contact rod 7 can generally be prevented. This recess 10 and the conical end face 9 of the lance head adjoining the recess must be kept clean of slag or metal deposits in order to ensure that after the measurement, i.e. after removing a measuring probe from the contact rod 7, to be able to pick up a new measuring probe perfectly, the contact between the contact points 11 located at the lower end of the contact rod and the corresponding contact points of the measuring probe being ensured.

Zu diesem Zweck ist eine Vorrichtung 12 zum Reinigen des Lanzenkopfes 6 vorgesehen, die mit einem Reinigungskopf 13, an dessen Oberseite ein Fräskopf 14 angeordnet ist, versehen ist. Der Reinigungskopf 13 wird von zwei Teilen 13', 13", die einander zu einem Hohlzylinder ergänzen, gebildet. Die Teilfugen 15 verlaufen vertikal, d. h. durch die Achse 16 des Reinigungskopfes 13. Der Reinigungskopf 13 weist ein ebenfalls geteilt ausgebildetes Gehäuse 17 auf, in dem der ebenfalls geteilt ausgebildete Fräskopf 14 mittels Rollen 18 in horizontaler und vertikaler Richtung drehbar abgestützt ist. Jeder Teil 17', 17" des Gehäuses 17 ist mit jeweils einem auskragenden Arm 19 versehen, der mittels einer sich vertikal erstreckenden Achse 20 an einem Support 21 schwenkbeweglich befestigt ist, wodurch die Teile 17',17" des Gehäuses 17 und die in ihnen gelagerten Teile 14', 14" des Fräskopfes 14 zangenartig bewegbar sind, und zwar aus einer in Fig. 3 mit strichpunktierten Linien dargestellten Spreizposition A in eine geschlossene Arbeitsposition B, die in Fig. 3 mit vollen Linien dargestellt ist.For this purpose, a device 12 for cleaning the lance head 6 is provided, which is provided with a cleaning head 13, on the upper side of which a milling head 14 is arranged. The cleaning head 13 is formed by two parts 13 ′, 13 ″, which complement one another to form a hollow cylinder. The parting joints 15 run vertically, that is to say through the axis 16 of the cleaning head 13. The cleaning head 13 has a housing 17, which is likewise divided to which the likewise divided milling head 14 is rotatably supported in the horizontal and vertical directions by means of rollers 18. Each part 17 ′, 17 ″ of the housing 17 is each provided with a projecting arm 19 which is connected to a support 21 by means of a vertically extending axis 20 is pivotally attached, whereby the parts 17 ', 17 "of the housing 17 and the parts 14', 14" of the milling head 14 mounted in them can be moved like pliers, namely from a spreading position A shown in FIG. 3 with dash-dotted lines into a closed position Working position B, which is shown in Fig. 3 with full lines.

Der Support 21 ist mittels zweier Vertikalführungen 22 an einem Träger 23 in Richtung der Achse 16 des Reinigungskopfes 13 heb- und senkbar gelagert. Zum Heben und Senken dient ein an dem Träger angelenkter Druckmittelzylinder 24, dessen Kolbenstange 25 an einem Kipphebel 26, der am Träger 23 mittels einer Schwenkachse 27 gelenkig befestigt ist, angelenkt ist. An dem Kipphebel 26 ist eine Lasche 28 angelenkt, deren anderes Ende am Support 21 gelenkig befestigt ist, so dass eine Schwenkbewegung des Kipphebels 26 um seine Schwenkachse 27 ein Heben und Senken des Supportes 21 bewirkt.The support 21 is supported by means of two vertical guides 22 on a support 23 in the direction of the axis 16 of the cleaning head 13 so that it can be raised and lowered. A pressure medium cylinder 24, which is articulated on the carrier, serves for lifting and lowering, the piston rod 25 of which is articulated on a rocker arm 26 which is articulated on the carrier 23 by means of a pivot axis 27. A link 28 is articulated on the rocker arm 26, the other end of which is articulated to the support 21, so that a pivoting movement of the rocker arm 26 about its pivot axis 27 causes the support 21 to be raised and lowered.

Zum Schliessen in die Arbeitsposition B und Öffnen in die Spreizposition A des Reinigungskopfes dient ein am Support 21 befestigter Druckmittelzylinder 29, dessen Kolbenstange 30 etwa mittig an einem Querträger 31 angreift, welcher Querträger 31 mit jeweils einem Ende 32, 33 über eine Gelenklasche 34 mit jeweils einem von den Teilen 17', 17" des Gehäuses 17 auskragenden Arm 19 gelenkig verbunden ist. Durch Verschieben des Querträgers 31 in Richtung des Pfeiles 35 in die in Fig. 3 dargestellte strichpunktierte Lage werden die Arme 19 um ihre Achsen 20 verschwenkt und die Teile 13', 13" des Reinigungskopfes 13 voneinander in die Spreizposition A bewegt.For closing in the working position B and opening in the spreading position A of the cleaning head, a pressure medium cylinder 29 attached to the support 21 is used, the piston rod 30 of which engages approximately centrally on a cross member 31, which cross member 31 has one end 32, 33 in each case via a Articulated bracket 34 is connected in an articulated manner to an arm 19 projecting from the parts 17 ', 17 "of the housing 17. By moving the cross member 31 in the direction of arrow 35 into the dash-dotted position shown in FIG. 3, the arms 19 become about their axes 20 pivoted and the parts 13 ', 13 "of the cleaning head 13 moved from one another into the spreading position A.

Zur Durchführung einer oszillierenden Drehbewegung des Fräskopfes 14 ist an jedem Teil 14', 14" des Fräskopfes 14 eine horizontal gerichtete halbkreisringförmige Platte 36 vorgesehen, die beide innerhalb des Gehäuses 17 des Reinigungskopfes 13 liegen. An jeder dieser Platten 36 ist eine Gelenkstange 37 mit einem Ende angelenkt. Die gegenüberliegenden Enden der beiden Gelenkstangen 37 sind mittels eines Doppelarmes 38 miteinander gelenkig verbunden, der mittig an einer am Support 21 befestigten Schwenkachse 39 schwenkbar gelagert ist. An einem der Arme des Doppelarmes 38 greift exzentrisch, d. h. im Abstand 40 von der Schwenkachse 39, die Kolbenstange 41 eines Druckmittelzylinders 42 an, der am Support 21 gegengelagert ist.To carry out an oscillating rotary movement of the milling head 14, a horizontally directed semicircular plate 36 is provided on each part 14 ′, 14 ″ of the milling head 14, both of which lie within the housing 17 of the cleaning head 13. On each of these plates 36 there is an articulated rod 37 with a The opposite ends of the two articulated rods 37 are articulated to one another by means of a double arm 38 which is pivotably mounted in the center on a pivot axis 39 fastened to the support 21. One of the arms of the double arm 38 engages eccentrically, ie at a distance 40 from the pivot axis 39, the piston rod 41 of a pressure medium cylinder 42, which is supported on the support 21.

Wie aus Fig. 3 ersichtlich ist, fluchten bei nicht oszillierendem Fräskopf 14, d. h. bei in Mittelstellung befindlichen Doppelarm 38, die Achsen 43, mit denen die Gelenkstangen 37 am Doppelarm 38 befestigt sind, mit den Achsen 20, mit denen die Arme 19 am Support 21 angelenkt sind. Durch diese Massnahme vollführen die Fräskopfteile 14', 14" beim Spreizen bzw. Schliessen des Reinigungskopfes 13 keine Drehbewegung. Zur Führung des Querträgers 31 bei Verschieben desselben zum Zweck des-Spreizens bzw. Schliessends des Reinigungskopfes 13 dienen am Querträger 31 drehbar gelagerte Führungsrollen 44, die an einem Führungslineal 45, welches am Support 21 befestigt ist, geführt sind.As can be seen from Fig. 3, are aligned with a non-oscillating milling head 14, i. H. in the middle position of the double arm 38, the axes 43 with which the articulated rods 37 are fastened to the double arm 38, with the axes 20 with which the arms 19 are articulated on the support 21. As a result of this measure, the milling head parts 14 ′, 14 ″ do not perform any rotational movement when the cleaning head 13 is spread or closed. To guide the cross member 31 when the cleaning head 13 is displaced for the purpose of spreading or closing the cleaning head 13, guide rollers 44 rotatably mounted on the cross member 31 are used. which are guided on a guide ruler 45, which is attached to the support 21.

Um den Kontaktstab 7 mit den Teilen 13', 13" des Reinigungskopfes 13 beim Verschwenken aus der Spreizposition A in die Arbeitsposition B mit Sicherheit zentrisch zu erfassen, sind beide Teile 17', 17" des Gehäuses 17 mit über die Teilfugen 15 vorragenden Zentrierfortsätzen 46 versehen. Zur sicheren Führung des Reinigungskopfes 13 in Richtung der Achse 8 der Lanze 1 sind im Gehäuse 17 ebenfalls geteilt ausgebildete Zylinderführungsflächen 47 vorgesehen, die jeweils von einer halben kreisringförmigen Platte 48 gebildet sind, an der vorteilhaft die Zentrierfortsätze 46 vorgesehen sind. Zur weiteren Zentrierung des Kontaktstabes 7 sind in den Platten 36 radial angeordnete Stellschrauben 49 vorgesehen, deren Enden 50 am Kontaktstab 7 anliegen.In order to reliably detect the contact rod 7 with the parts 13 ', 13 "of the cleaning head 13 when pivoting from the spreading position A into the working position B, both parts 17', 17" of the housing 17 are provided with centering projections 46 projecting beyond the parting lines 15 Mistake. For safe guidance of the cleaning head 13 in the direction of the axis 8 of the lance 1, cylindrical guide surfaces 47 are also provided in the housing 17, each of which is formed by a half circular plate 48 on which the centering extensions 46 are advantageously provided. For further centering of the contact rod 7, radially arranged adjusting screws 49 are provided in the plates 36, the ends 50 of which abut the contact rod 7.

Die Zähne 51 des Fräskopfes 14 weisen ein dem Lanzenkopf 6 angepasstes Profil auf. Sie schliessen im Grundriss gesehen miteinander einen Winkel 52 ein, der kleiner ist als der Maximalwinkel der Drehoszillationsbewegung. Ein am Fräskopf montierter Deckel 53 (er ist ebenfalls geteilt ausgebildet) dient zum Schutz der Rollen 18.The teeth 51 of the milling head 14 have a profile adapted to the lance head 6. Seen in the floor plan, they form an angle 52 with one another that is smaller than the maximum angle of the rotary oscillation movement. A cover 53 mounted on the milling head (it is also of a split design) serves to protect the rollers 18.

Der den Support 21 tragende Träger 23 ist mittels einer Stelleinrichtung 54 aus einer Ruheposition C (Fig. 1) seitlich neben dem Konverter 3 in die in den Fig. 2 und 3 dargestellte Position D in Richtung des Doppelpfeiles 55 verschieb- bzw. verschwenkbar, in der die Achse 16 des in Arbeitsposition B gebrachten Reinigungskopfes 13 mit der Achse 8 der Lanze 1 fluchtet.The support 23 carrying the support 21 can be displaced or swiveled laterally next to the converter 3 into the position D shown in FIGS. 2 and 3 in the direction of the double arrow 55 by means of an actuating device 54 in FIG. 1 which aligns the axis 16 of the cleaning head 13 brought into the working position B with the axis 8 of the lance 1.

Die Funktion der Vorrichtung ist folgende:The function of the device is as follows:

Sobald die Messsonde vom Kontaktstab 7 nach durchgeführter Messung entfernt worden ist, wird der Träger 23 der Vorrichtung 12 mittels der Stelleinrichtung 54 in die in den Fig. 2 und 3 dargestellte Position D verschoben bzw. verschwenkt. Dabei befinden sich die Teile 13', 13" des Reinigungskopfes 13 in Spreizposition A und der Support 21 in der in Fig. 2 mit vollen Linien dargestellten abgesenkten Position. Anschliessend werden die Teile 13', 13" des Reinigungskopfes 13 in Arbeitsposition B geschwenkt, der Support 21 und damit der Reinigungskopf 13 in die in Fig. 2 mit strichpunktierten Linien dargestellte Lage gehoben und gleichzeitig der Fräskopf 14 in oszillierende Drehbewegung versetzt.As soon as the measuring probe has been removed from the contact rod 7 after the measurement has been carried out, the carrier 23 of the device 12 is displaced or pivoted into the position D shown in FIGS. 2 and 3 by means of the adjusting device 54. The parts 13 ', 13 "of the cleaning head 13 are in the spreading position A and the support 21 is in the lowered position shown in full lines in FIG. 2. The parts 13', 13" of the cleaning head 13 are then pivoted into the working position B, the support 21 and thus the cleaning head 13 are raised to the position shown in dash-dotted lines in FIG. 2 and at the same time the milling head 14 is set in an oscillating rotary movement.

An dem Lanzenkopf 6 haftende Schlacken- bzw. Metallansätze werden dadurch sauber entfernt, und der Lanzenkopf 6 weist nach Durchführung der Oszillationsbewegung wiederum sein ursprüngliches Profil auf, so dass die nächste Messsonde nach Aufschieben auf den Kontaktstab 7 dicht am Lanzenkopf 6 anliegt und ein Eindringen von Schlacke bzw. Metall zwischen den Lanzenkopf 6 und die Messsonde verhindert wird.Slag or metal deposits adhering to the lance head 6 are thereby removed cleanly, and the lance head 6 has its original profile again after the oscillation movement has been carried out, so that the next measuring probe, after being pushed onto the contact rod 7, lies close to the lance head 6 and penetration of Slag or metal between the lance head 6 and the measuring probe is prevented.

Nach durchgeführter Reinigung wird der Reinigungskopf 13 gesenkt und es werden seine Teile 13', 13" in Spreizstellung A gebracht. Danach wird der Träger 23 aus dem Bereich des metallurgischen Gefässes mit Hilfe der Stelleinrichtung 54 weggeschwenkt bzw. weggefahren.After cleaning has been carried out, the cleaning head 13 is lowered and its parts 13 ′, 13 ″ are brought into the spreading position A. The carrier 23 is then pivoted or moved away from the region of the metallurgical vessel with the aid of the adjusting device 54.

Die Erfindung beschränkt sich nicht auf das in der Zeichnung dargestellte Ausführungsbeispiel, sondern sie kann in verschiedener Hinsicht modifiziert werden. Sie kann z. B. auch zum Entfernen von sich am Düsenstern von Blaslanzen ansetzenden Metall- und Schlackenspritzern verwendet werden, wobei die Zähne des Fräskopfes 14 der Kontur des Düsensterns angepasst sind. In diesem Fall wird das Gehäuse 17 an der Blaslanze selbst zentriert; es erstreckt sich vom Fräskopf 14 nach oben.The invention is not limited to the embodiment shown in the drawing, but can be modified in various ways. You can e.g. B. can also be used for removing metal nozzles and slag splashes attached to the nozzle star of blowing lances, the teeth of the milling head 14 being adapted to the contour of the nozzle star. In this case, the housing 17 is centered on the blowing lance itself; it extends from the milling head 14 upwards.

Es ist nicht unbedingt erforderlich, den Träger 23 mittels der Stelleinrichtung 54 zum Zweck des Reinigens des Lanzenkopfes zum Lanzenkopf 6 zu bringen; es ist auch möglich, die Lanze 1 zum Reinigungskopf zu bringen, was insbesondere im Fall der Anordnung der Lanze 1 an einem verfahrbaren Lanzenwagen von Vorteil ist.It is not absolutely necessary to bring the carrier 23 to the lance head 6 by means of the adjusting device 54 for the purpose of cleaning the lance head; it is also possible to bring the lance 1 to the cleaning head, which is particularly advantageous in the case of the arrangement of the lance 1 on a movable lance carriage.

Die erfindungsgemässe Vorrichtung 12 eignet sich zur Reinigung von Lanzenköpfen jeder Art, z. B. auch für Lanzen, die in Pfannen oder anderen metallurgischen Gefässen eingesetzt werden.The device 12 according to the invention is suitable for cleaning lance heads of any kind, e.g. B. also for lances that are used in pans or other metallurgical vessels.

Es ist möglich, anstelle des Fräskopfes 14 der Kontur des Lanzenkopfes angepasste, teilbare Bürsten, beispielsweise Drahtbürsten, einzusetzen.Instead of the milling head 14, it is possible to use divisible brushes, for example wire brushes, which are adapted to the contour of the lance head.

Claims (12)

1. Arrangement (12) for cleaning a lance head (6) of a lance (1) introducible into a metallurgical vessel (3), in particular a lance (1) carrying a measuring and/or sampling probe, comprising a cleaning head (13) being in contact with the lance head (6) during the cleaning procedure and surrounding the lance head (6), the cleaning head (13) and the lance (1) being relatively movable in the direction of the axis (8) of the lance (1), characterized in that the cleaning head (13) and the lance (1) are placeable into an aligned position (D) by an adjustment means (54), and that the cleaning head (13) is settable into a rotational movement reciprocating about the axis (8) of the lance (1) by an oscillation means (42).
2. Arrangement according to claim 1, characterized in that the cleaning head (13) is designed in at least two parts in the direction of the axis (8) of the lance (1), the parts (13', 13") of the cleaning head (13) being pivotable from a straddled position (A) beside the lance head (6) into an operation position (B) closedly surrounding the lance head (6), and vice versa, by a straddling means (29).
3. Arrangement according to claim 1 or 2, characterized in that the cleaning head (13) is liftable and lowerable in the direction of the axis (8) of the lance (1) by a lifting and lowering means (24 to 28).
4. Arrangement according to claim 3, characterized in that the cleaning head (13) is mounted on a vertical guide (22) arranged on a carrier (23), which is adjustable in the horizontal direction away from and towards the axis (8) of the lance (1).
5. Arrangement according to claims 2 to 4, characterized in that the cleaning head (13) comprises a two-part casing (17), in which a likewisely two-part milling head (14) is rotatably mounted, each of the two parts (17', 17") of the casing (17) being hinged to a support (21) displaceably mounted on the vertical guides (22) by means of an arm (19) each fastened thereto.
6. Arrangement according to claim 5, characterized in that the two parts (14',14") of the milling head (14) are hinged, by means of articulation rods (37), to a double arm (38) articulately fastened to the centre of the support (21), to which double arm the oscillation means (42) is eccentrically hinged.
7. Arrangement according to claim 5 or 6, characterized in that each arm (19) is hinged to one end (32,33) each of a cross beam (31) horizontally movable away from and towards the cleaning head (13), via an articulation bracket (34), each, which cross beam (31) is displaceable by the straddling means (29) countermounted on the carrier (23).
8. Arrangement according to claim 7, characterized in that the axles (20) of the arms (19) of the parts (17', 17") of the casing (17), which are hinged to the support (21), register with the axles (43) of the articulation rods (37) hinged to the double arm (38), with the milling head (14) not reciprocating.
9. Arrangement according to claims 5 to 8, characterized in that the parts (17', 17") of the casing (17), on their partition joints (15), are provided with centering noses (46) interengaging during closure into the operation position (B).
10. Arrangement according to claims 5 to 9, characterized in that the teeth (51) of the milling head (14) enclose an angle (52) with one another that is smaller than the maximum angle of the reciprocating rotational movement.
11. Arrangement according to claims 5 to 10, characterized in that the profile of the teeth (51) of the milling head (14) is adapted to the profile of the lance head (6).
12. Arrangement according to claims 1 to 11, characterized in that the cleaning head (13) is placeable from a resting position (C) laterally beside the metallurgical vessel (3) into the position (D) aligned with the lance (1) by the adjustment means (54).
EP85890094A 1984-05-08 1985-04-17 Arrangement for cleaning the lance head of a lance introducible into a metallurgical vessel Expired EP0164331B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0150784A AT381795B (en) 1984-05-08 1984-05-08 DEVICE FOR CLEANING A LANCE HEAD OF A LANCE THAT CAN BE INSERTED INTO A METALLURGICAL VESSEL
AT1507/84 1984-05-08

Publications (3)

Publication Number Publication Date
EP0164331A2 EP0164331A2 (en) 1985-12-11
EP0164331A3 EP0164331A3 (en) 1986-04-02
EP0164331B1 true EP0164331B1 (en) 1988-06-01

Family

ID=3515233

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85890094A Expired EP0164331B1 (en) 1984-05-08 1985-04-17 Arrangement for cleaning the lance head of a lance introducible into a metallurgical vessel

Country Status (8)

Country Link
US (1) US4591134A (en)
EP (1) EP0164331B1 (en)
JP (1) JPH0723889B2 (en)
AT (1) AT381795B (en)
CA (1) CA1243202A (en)
DE (1) DE3563069D1 (en)
SU (1) SU1447290A3 (en)
UA (1) UA2123A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2679570B1 (en) * 1991-07-25 1993-11-12 Sollac DEVICE FOR CLEARING A BLOWING LANCE IN A METALLURGICAL CONTAINER, IN PARTICULAR A STEEL CONVERTER.
US7541603B2 (en) * 2006-09-27 2009-06-02 Asml Netherlands B.V. Radiation system and lithographic apparatus comprising the same
AT510292B1 (en) * 2011-04-11 2012-03-15 Siemens Vai Metals Tech Gmbh DETERMINATION OF THE POSITION OF A CONTACT TABLE TO A PROBE HOLDER OF A HORIZONTAL PROBE
CN103014226B (en) * 2012-11-28 2014-04-02 夏俊双 Automatically cleaning apparatus of converter oxygen lance bonded slag
DE102014106669B4 (en) 2014-05-12 2023-08-24 Thielenhaus Technologies Gmbh Device and method for mechanical finishing of a surface of a workpiece
DE102016120334A1 (en) * 2016-10-25 2018-05-09 Sms Group Gmbh Apparatus and method for removing metallic and non-metallic caking on injection lances in converter use

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU68908A1 (en) * 1973-01-22 1974-02-11
DE2521833A1 (en) * 1975-05-16 1976-11-25 Krupp Gmbh PROCESS FOR DISCONTINUOUS MEASUREMENT IN THE MELT OF A CRUCIBLE AND / OR TAKING SAMPLES FROM THE CRUCIBLE AND EQUIPMENT FOR CARRYING OUT THE PROCESS
LU73846A1 (en) * 1975-11-21 1977-05-31
US4226407A (en) * 1979-03-26 1980-10-07 Bethlehem Steel Corporation Metallurgical lance deskuller
DE3106234A1 (en) * 1981-02-20 1982-09-02 Fried. Krupp Gmbh, 4300 Essen Method and apparatus for removing deposits on lances which can be moved relative to a metallurgical vessel

Also Published As

Publication number Publication date
JPH0723889B2 (en) 1995-03-15
US4591134A (en) 1986-05-27
ATA150784A (en) 1986-04-15
CA1243202A (en) 1988-10-18
DE3563069D1 (en) 1988-07-07
JPS60250254A (en) 1985-12-10
UA2123A1 (en) 1994-12-26
EP0164331A2 (en) 1985-12-11
AT381795B (en) 1986-11-25
EP0164331A3 (en) 1986-04-02
SU1447290A3 (en) 1988-12-23

Similar Documents

Publication Publication Date Title
DE2709727C3 (en) Device for replacing pouring pipes on pouring vessels during continuous casting
EP0183812B1 (en) Apparatus for cleaning the gas nozzle of a welding torch
EP0164331B1 (en) Arrangement for cleaning the lance head of a lance introducible into a metallurgical vessel
EP3892947A1 (en) Device for maintaining the tap hole of an electric arc furnace
DE2753161C3 (en) Method and device for changing measuring and / or sampling probes for molten steel
CH625984A5 (en)
EP0124814A2 (en) Device for lifting and replacing charging hole lids of horizontal chamber coke ovens and for cleaning the sealing surfaces
EP0364825B1 (en) Apparatus for taking discontinuous measurements on molten metal
DE2449685C3 (en) Device for attaching an inlet valve to a device for dispensing liquid metal
EP0092636B1 (en) Process and device for handling measuring or sample-taking probes at metal production, especially steel production
DE2642065B2 (en) Sampling device for toxic and / or radioactive substances
DE1955395A1 (en) Device for cutting thick-walled hollow bodies
WO2009153075A1 (en) Arc furnace
DE3034700C2 (en) Electric resistance welding gun
DE3816912C2 (en)
AT390963B (en) DEVICE FOR CLEANING A LANCH HEAD
DE3242908A1 (en) Milling appliance for cleaning melting furnaces and the like
DE3708818C2 (en)
DE3005994C2 (en) Coke oven charging car
DE3106234C2 (en)
EP3993923B1 (en) Device for manipulating a spout at an exchange device at the outlet of a metallurgical container
DE3144222C2 (en) Device for treating doors and door frames of horizontal chamber coking ovens
DE2849459C2 (en) Device for working on blast furnaces
AT395984B (en) DEVICE FOR KEEPING A METALURGICAL VESSEL'S LANE OPENING
DE2839921C2 (en)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19860924

17Q First examination report despatched

Effective date: 19871020

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REF Corresponds to:

Ref document number: 3563069

Country of ref document: DE

Date of ref document: 19880707

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ITF It: translation for a ep patent filed

Owner name: SOCIETA' ITALIANA BREVETTI S.P.A.

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITPR It: changes in ownership of a european patent

Owner name: CESSIONE;VOEST - ALPINE INDUSTRIEANLAGENBAU GESELL

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19930315

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19930317

Year of fee payment: 9

ITTA It: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19940417

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19940417

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19941229

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19970320

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990202