EP0137961B1 - Withdrawing device for a gas bubbling plug - Google Patents

Withdrawing device for a gas bubbling plug Download PDF

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Publication number
EP0137961B1
EP0137961B1 EP84109793A EP84109793A EP0137961B1 EP 0137961 B1 EP0137961 B1 EP 0137961B1 EP 84109793 A EP84109793 A EP 84109793A EP 84109793 A EP84109793 A EP 84109793A EP 0137961 B1 EP0137961 B1 EP 0137961B1
Authority
EP
European Patent Office
Prior art keywords
brick
gas
coupling part
coupling
drawbar
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
EP84109793A
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German (de)
French (fr)
Other versions
EP0137961B2 (en
EP0137961A1 (en
Inventor
Hans Dipl.-Ing. Höffgen
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.)
RADEX DEUTSCHLAND AKTIENGESELLSCHAFT FUER FEUERFES
Original Assignee
RADEX DEUTSCHLAND AG fur FEUERFESTE ERZEUGNISSE
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Priority claimed from DE19833330105 external-priority patent/DE3330105C2/en
Priority claimed from DE19843402444 external-priority patent/DE3402444A1/en
Application filed by RADEX DEUTSCHLAND AG fur FEUERFESTE ERZEUGNISSE filed Critical RADEX DEUTSCHLAND AG fur FEUERFESTE ERZEUGNISSE
Priority to AT84109793T priority Critical patent/ATE32751T1/en
Publication of EP0137961A1 publication Critical patent/EP0137961A1/en
Application granted granted Critical
Publication of EP0137961B1 publication Critical patent/EP0137961B1/en
Publication of EP0137961B2 publication Critical patent/EP0137961B2/en
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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
    • C21C5/4606—Lances or injectors
    • C21C5/462—Means for handling, e.g. adjusting, changing, coupling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/002—Treatment with gases
    • B22D1/005—Injection assemblies therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53796—Puller or pusher means, contained force multiplying operator
    • Y10T29/5383—Puller or pusher means, contained force multiplying operator having fluid operator

Definitions

  • the invention relates to a device for pulling out a sheet-metal-coated gas purging plug provided with a central gas connection pipe from a perforated brick or a perforated sleeve, consisting of a frame for support on the outside of the perforated brick or perforated sleeve or on the outer wall of the metallurgical vessel, one in the Frame relative to this axially displaceable pull rod which can be aligned in alignment with the central axis of the gas purging plug, a coupling device provided on the pull rod for coupling the end of the pull rod to the gas purging plug and a drive device for displacing the pull rod in the direction away from the perforated block.
  • gas purging stone sets are very often used in the bottom or the side walls of metallurgical vessels in order to treat the melt with appropriate purging gases.
  • the gas purging stones are wear parts that have to be replaced from time to time.
  • pulling out the worn gas purging stones from the perforated stone or the perforated stone sleeve presents considerable difficulties.
  • the bottom of the sink In the case of gas shrouds covered with sheet metal, which cannot be easily removed, the bottom of the sink must be welded on and then the sink removed from the outside, and then the sheet of the sheath must be burned off. Such a procedure is lengthy, cumbersome and involves considerable dirt pollution for the fitters.
  • a device for pulling out a gas purging plug from a perforated brick which comprises a frame for support on the outer wall of the metallurgical vessel, a threaded rod which is displaceable in the axial direction relative to the frame Coupling device provided on the pull rod for coupling to the gas purging plug and a screw-like drive device for displacing the pull rod in the axial direction to the purging plug.
  • the sink is one without sheet metal cladding. At its outer end, the sink is provided with a flange which bears against a base plate via a seal. This is provided with pins which are locked on an outer clamping plate.
  • the clamping plate lies against the sink with the interposition of a seal and presses the stopper in sealing contact with the base plate and the conical hole in the perforated block.
  • the flushing gas, with which the molten metal is to be treated, is accessed through a channel formed on the clamping plate, which is arranged radially to the flushing stone.
  • a nut, which is welded to the outside of the clamping plate, is used for coupling to the tie rod end.
  • the invention has for its object to provide a device with which a sheet-coated gas purging plug with a central gas connection pipe can be pulled out of the perforated brick or the perforated brick sleeve with simple means.
  • a separate base or clamping plate, on which the gas purging plug could be pulled out as in the known device, is not present in a sheet-metal-coated gas purging plug with a central gas connection.
  • the coupling device has a coupling part provided at the end of the pull rod with at least one bore running transversely to the pull rod, a counter-coupling part provided on the sheet metal base of the gas flushing plug with likewise at least one bore running transversely to the sink axis and one through the mutually aligned bores has pluggable coupling bolts.
  • the coupling part provided on the pull rod preferably has a cylindrical end section with two mutually aligned bores.
  • the counter coupling part is expediently designed as a separate cylinder with two mutually aligned bores, which is longer than the gas connecting pipe and surrounds it concentrically, the distance between the bores from the sheet metal bottom of the gas purging plug being greater is the length of the gas connection pipe.
  • the inner diameter of the cylindrical end portion of the coupling part provided on the pull rod should be larger than the outer diameter of the cylindrical counter-coupling part provided on the sink.
  • the coupling device consists of two interlocking cylindrical coupling parts, that one of the coupling parts is provided with at least two radial pins inserted into the cylindrical wall, projecting inwards and / or outwards, and that the other coupling part has a corresponding one Number of slots extending from the outer end with a width suitable for receiving the pins in the same circumferential distribution, each initially run approximately axially and then more than one pin diameter perpendicular to it in the circumferential direction, the coupling parts being able to be pushed into one another and locked together without hindrance.
  • the gas connecting pipe preferably projects beyond the coupling part attached to the gas purging plug for free access.
  • the gas connection pipe can easily protrude beyond the coupling part attached to the gas purging plug, so that it is freely accessible.
  • the coupling part containing the pins can either overlap the mating coupling part from the outside or can be inserted into it from the inside. Accordingly, the pins are either to be arranged so that they protrude substantially inside the coupling part or protrude from the outside into the slots of the mating coupling part. Alternatively, the pins can also protrude outwards beyond the coupling part and protrude outwards from the slots.
  • the pins preferably consist of round steel pieces which are fixed with a weld in the cylindrical coupling part, essentially inwardly projecting pins offer a particularly favorable possibility of manufacturing the coupling part, while outwardly projecting pins simplify the locking process by not one in itself Allow absolutely necessary optical control of the relative position between pin and slots.
  • the ends of the slots can be provided with bulges in a preferred embodiment, into which the pins can snap. As soon as the tie rod is then braced against the perforated brick, the connection can no longer be released.
  • the design of the coupling device according to the invention offers the particular advantage that it is possible to design the gas connecting pipe from the inside to protrude beyond the coupling counterpart arranged on the gas purging plug. This provides an improved possibility of connecting a gas supply line to the gas purging plug unhindered in order to produce the operational readiness, without the possibility of coupling a pull rod being impaired in any way. If the pull rod is supported by a frame against the outer wall of the vessel and is axially displaceable relative to this frame, it is particularly advantageous to design the pull rod as a threaded spindle and to equip it with a handwheel. that can be supported against a fixed or displaceable part of the frame and can be locked against the spindle.
  • the handwheel can be placed at a distance from the frame and locked with the pull rod, so that it is possible to bring about the locking of the coupling parts by axially shifting and turning the handwheel.
  • the operating possibility of the coupling device is hereby improved again.
  • the possibility of locking between the handwheel and the drawbar preferably consists of a cross hole in the handwheel, an elongated hole in the drawbar and an insertable cotter pin. The elongated hole makes it easier to find the covering of the openings penetrated by the split pin. After locking the coupling parts, the cotter pin can be pulled and the handwheel can be brought into contact with the frame. The gas purging plug is then pulled out by further turning the handwheel.
  • the frame of the device is preferably designed as a tripod, the three support legs sitting on a central guide sleeve for the pull rod. Such a frame can be supported comfortably and steadily on any surface.
  • a receptacle holder for the drive device for displacing the pull rod can be provided on the frame following the guide sleeve.
  • a hollow piston cylinder which can be pressurized with gas is preferably provided as the drive device, which is arranged in alignment with the guide sleeve and through which the pull rod extends, the pull rod being lockable on or in the hollow piston at least during the extraction process.
  • the pull rod can be designed as a threaded spindle, on the threaded spindle on the from the hollow piston protruding end, which is located on the opposite side of the coupling device, sits a handwheel with a corresponding internal thread, which can be screwed in the direction of the front side of the hollow piston and can be brought into contact with a contact surface on the front side of the hollow piston. In this way, the handwheel can be used to lock the pull rod relative to the hollow piston.
  • the invention relates to a specially designed gas purging plug which is equipped with the corresponding mating coupling part.
  • the pull-out device essentially consists of a frame 1, which is supported on a perforated brick 2 or a perforated stone sleeve or else on the outer wall of a metallurgical vessel not shown in the drawing, a pull rod guided in the frame 1 3, which can be driven at least in the direction away from the perforated brick 2, and a coupling device 4 which can be fastened with the pull rod 3 to a gas purging brick 5 provided with a sheet metal jacket.
  • the frame 1 has a central guide sleeve 6, in which the pull rod 3 is guided in a longitudinally displaceable manner.
  • the frame 1 has a receiving holder 9 for a drive device 10 for the longitudinal displacement of the pull rod 3.
  • the receiving holder is designed as a slotted cylinder 11, in which a hollow piston cylinder 12 serving as a drive device is seated. In the present case, a single-acting hollow piston cylinder is sufficient, which can be pressurized on one side via a feed line 13.
  • the pull rod 3 is displaced in the axial direction by pressurization and entrainment of the handwheel 15.
  • the coupling device 4 consists of a coupling part 16 provided at the end of the pull rod 3 and a mating coupling part 18 seated on the sheet metal base 17 of the gas purging plug 5.
  • the coupling part 16 seated on the pull rod 3 is bell-shaped and has a cylindrical end section 19 with two bores 20 aligned with one another on, which are formed on diametrically opposite sides of the end portion 19.
  • the bell-shaped constricted section 21 of the coupling part 16 is provided with a central threaded bore 22, with which the coupling part 16 is screwed onto the pull rod 3 designed as a threaded spindle. With the help of a circumferential weld seam 23, the threaded spindle is fixed non-rotatably on the coupling part 16.
  • the mating coupling part 18 is designed as a cylinder 24, which is connected at one end to the sheet metal base 17 of the gas purging plug via a weld seam 25.
  • the coupling cylinder 24 surrounds the gas connection pipe 26 with a sufficient distance so that it is not in the way when connecting the gas connection line.
  • the coupling cylinder 24 is longer than the gas connection pipe 26 seated on the sheet metal base 17 and has in its end protruding beyond the gas connection pipe 26 on diametrically opposite sides two mutually aligned bores 27 which have approximately the same diameter as those in the coupling part 16 provided holes 20.
  • the outside diameter of the coupling cylinder 24 is somewhat smaller than the inside diameter of the cylindrical end section 19 of the coupling part 16, so that the coupling part 16 can be put over the coupling cylinder 24.
  • a coupling bolt 28 is inserted through the four mutually aligned bores and thus the positive connection between the pull rod 3 and the gas purging plug 5 is established.
  • the coupling pin 28 can be captively attached to the coupling part 16 by means of a chain 29.
  • the frame 1 To pull out a gas purging plug 5 from a perforated brick 2, the frame 1 is placed with its three support legs 7 against the perforated brick 2 or the outer wall of the corresponding metallurgical vessel and then the pull rod is moved so far in the direction of the perforated brick 5 that the coupling part 16 over the clutch cylinder 24 engages and the clutch pin 28 can be inserted. Then it will be the handwheel 15 is rotated so far in the direction of the hollow piston cylinder 12 until it rests on the facing end face of the hollow piston 14. The hollow piston cylinder 12 is then acted upon by a pressure medium via the feed line 13, as a result of which the hollow piston 14 moves out of the cylinder 12 and takes the pull rod 3 with it via the handwheel 15. By shifting the pull rod 3, the coupled sink 5 is automatically pulled out of the perforated block 2.
  • the two devices essentially differ in their coupling device.
  • the coupling device 4 in the second embodiment consists of a coupling part 16 arranged at the end of the pull rod 3 and a coupling counterpart 18 arranged on the sheet metal base of the gas purging plug 5.
  • the coupling part 16 connected to the pull rod 3 is designed as a hollow cylinder and by means of a conical transition piece 21 with the pull rod 3 connected.
  • the conical transition piece 21 is provided with an approach with a central threaded bore 22 which is screwed onto the pull rod 3 designed as a threaded spindle.
  • the coupling part 16 and the pull rod 3 are connected to one another in a rotationally fixed manner by means of a circumferential weld seam 23.
  • the coupling part 16 has two inwardly projecting pins 34 inserted in bores 21, each of which is fastened on the outside with a circumferential weld seam 35.
  • the coupling counterpart 18 is also designed as a hollow cylinder and is connected at one end to the sheet metal base 17 of the gas purging plug 5 by means of a weld seam 25.
  • the coupling counterpart 18 is provided with two angled slots 36 extending from the end face, into which the pins 34 engage and which are equipped with widenings 33 at one end and bulges 32 at the other end.
  • a gas connection pipe 26 is arranged on the gas purging plug 5, which protrudes a lot from the coupling counterpart 18.
  • the gas connection pipe 26 is provided, for example, with an external thread for connecting a gas supply line. It is welded into a central opening in the sheet metal base 17 of the gas purging plug.
  • the outside diameter of the cylindrical coupling counterpart 18 is somewhat smaller than the inside diameter of the cylindrical coupling part 16, so that the latter coupling part 16 can be pushed over the coupling counterpart 18. If the inwardly projecting pins 34 come into abutment with the end face of the coupling counterpart 18, the pull rod with the coupling part 16 must be turned until the pins 34 move into the slots 36 and the coupling parts are locked together by further turning.
  • the handwheel 15 is provided with a transverse bore 31 and the pull rod 3 is provided with an elongated hole 30 at some distance from the lifting cylinder 14. Both can be brought into overlap by turning the handwheel 15 and can be fixed against rotation with a split pin 37 secured to a chain 38 and thus also axially fixed against one another. The rotation and displacement of the coupling part 16 can thus be effected via a force application on the handwheel 15.
  • the handwheel 15 is turned towards the pressure cylinder 12 after removing the split pin 37 until it rests on the end face of the reciprocating piston 14 facing it. Then the pressure cylinder 12 is acted upon by the supply line 13 with a pressure medium, whereby the reciprocating piston moves out of the pressure cylinder 12 by a defined amount and thereby takes the pull rod 3 with it via the handwheel 15. By shifting the pull rod 3, the coupled sink 5 is pulled out of the perforated brick 2 as in the first embodiment.

Description

Die Erfindung betrifft eine Vorrichtung zum Herausziehen eines blechummantelten, mit einem mittigen Gasanschlußrohr versehenen Gasspülsteins aus einem Lochstein bzw. einer Lochsteinhülse, bestehend aus einem Gestell zum Abstützen an der Außenseite des Lochsteins bzw. der Lochsteinhülse oder an der Außenwand des metallurgischen Gefäßes, einer in dem Gestell relativ zu diesem axial verschieblich geführten Zugstange, die zu der Mittelachse des Gasspülsteins fluchtend ausrichtbar ist, einer an der Zugstange vorgesehenen Kupplungseinrichtung zum Ankuppeln des Zugstangenendes an den Gasspülstein sowie einer Antriebseinrichtung zur Verschiebung der Zugstange in die von dem Lochstein wegweisende Richtung.The invention relates to a device for pulling out a sheet-metal-coated gas purging plug provided with a central gas connection pipe from a perforated brick or a perforated sleeve, consisting of a frame for support on the outside of the perforated brick or perforated sleeve or on the outer wall of the metallurgical vessel, one in the Frame relative to this axially displaceable pull rod which can be aligned in alignment with the central axis of the gas purging plug, a coupling device provided on the pull rod for coupling the end of the pull rod to the gas purging plug and a drive device for displacing the pull rod in the direction away from the perforated block.

In modernen Stahlwerken werden sehr häufig Gasspülsteinsets in den Boden bzw. die Seitenwände von metallurgischen Gefäßen eingesetzt, um die Schmelze mit entsprechenden Spülgasen zu behandeln. Die Gasspülsteine sind Verschleißteile, die von Zeit zu Zeit ausgewechselt werden müssen. Dabei bereitet insbesondere das Herausziehen der verschlissenen Gasspülsteine aus dem Lochstein bzw. der Lochsteinhülse erhebliche Schwierigkeiten. Bei blechummantelten Gasspülsteinen, die sich nicht ohne weiteres lösen lassen, muß der Boden des Spülsteins aufgeschweißt und dann der Spülstein von außen ausgeschlagen werden, und anschließend muß noch das Blech des Mantels abgebrannt werden. Eine solche Verfahrensweise ist langwierig, umständlich und für die Monteure mit erheblicher Schmutzbelästigung verbunden.In modern steelworks, gas purging stone sets are very often used in the bottom or the side walls of metallurgical vessels in order to treat the melt with appropriate purging gases. The gas purging stones are wear parts that have to be replaced from time to time. In particular, pulling out the worn gas purging stones from the perforated stone or the perforated stone sleeve presents considerable difficulties. In the case of gas shrouds covered with sheet metal, which cannot be easily removed, the bottom of the sink must be welded on and then the sink removed from the outside, and then the sheet of the sheath must be burned off. Such a procedure is lengthy, cumbersome and involves considerable dirt pollution for the fitters.

Nach der DE-B-1 268 793 ist eine Vorrichtung zum Herausziehen eines Gasspülsteins aus einem Lochstein bekannt, die ein Gestell zum Abstützen an der Außenwand des metallurgischen Gefäßes, eine mit Gewinde versehene Stange, die relativ zu dem Gestell in Axialrichtung verschiebbar ist, eine an der Zugstange vorgesehene Kupplungseinrichtung zum Ankuppeln an den Gasspülstein sowie eine schraubenartige Antriebseinrichtung zur Verschiebung der Zugstange in axialer Richtung zum Spülstein aufweist. Bei dem spülstein handelt es sich um einen solchen ohne Blechumkleidung. An seinem außenliegenden Ende ist der Spülstein mit einem Flansch versehen, der über eine Dichtung gegen eine Basisplatte anliegt. Diese ist mit Zapfen versehen, die an einer äußeren Klemmplatte arretiert sind. Die Klemmplatte liegt gegen den Spülstein unter Zwischenschaltung einer Dichtung an und preßt den Stopfen in dichtende Anlage an die Basisplatte und an die konische Bohrung des Lochsteins. Das Spülgas, mit weichem das schmelzflüssige Metall behandelt werden soll, erhält Zutritt durch einen an der Klemmplatte ausgebildeten Kanal, der radial zu dem Spülstein angeordnet ist. Zur Kupplung mit dem Zugstangenende dient eine Mutter, die an die Außenseite der Klemmplatte angeschweißt ist.According to DE-B-1 268 793, a device for pulling out a gas purging plug from a perforated brick is known, which comprises a frame for support on the outer wall of the metallurgical vessel, a threaded rod which is displaceable in the axial direction relative to the frame Coupling device provided on the pull rod for coupling to the gas purging plug and a screw-like drive device for displacing the pull rod in the axial direction to the purging plug. The sink is one without sheet metal cladding. At its outer end, the sink is provided with a flange which bears against a base plate via a seal. This is provided with pins which are locked on an outer clamping plate. The clamping plate lies against the sink with the interposition of a seal and presses the stopper in sealing contact with the base plate and the conical hole in the perforated block. The flushing gas, with which the molten metal is to be treated, is accessed through a channel formed on the clamping plate, which is arranged radially to the flushing stone. A nut, which is welded to the outside of the clamping plate, is used for coupling to the tie rod end.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zu schaffen, mit der ein blechummantelter Gasspülstein mit einem mittigen Gasanschlußrohr aus dem Lochstein bzw. der Lochsteinhülse mit einfachen Mitteln herausgezogen werden kann.The invention has for its object to provide a device with which a sheet-coated gas purging plug with a central gas connection pipe can be pulled out of the perforated brick or the perforated brick sleeve with simple means.

Eine gesonderte Basis- oder Klemmplatte, an der der Gasspülstein wie bei der bekannten Vorrichtung herausgezogen werden könnte, ist bei einem blechummantelten Gasspülstein mit mittigem Gasanschluß nicht vorhanden.A separate base or clamping plate, on which the gas purging plug could be pulled out as in the known device, is not present in a sheet-metal-coated gas purging plug with a central gas connection.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die Kupplungseinrichtung ein am Ende der Zugstange vorgesehenes Kupplungsteil mit mindestens einer quer zur Zugstange verlaufenden Bohrung, ein an dem Blechboden des Gasspülsteins vorgesehenes Gegenkupplungsteil mit ebenfalls mindestens einer quer zur Spülsteinachse verlaufenden Bohrung sowie einen durch die zueinander ausgerichteten Bohrungen steckbaren Kupplungsbolzen aufweist.According to the invention, this object is achieved in that the coupling device has a coupling part provided at the end of the pull rod with at least one bore running transversely to the pull rod, a counter-coupling part provided on the sheet metal base of the gas flushing plug with likewise at least one bore running transversely to the sink axis and one through the mutually aligned bores has pluggable coupling bolts.

Zum Lösen eines Gasspülsteins braucht lediglich das Gestell an dem Lochstein bzw. der Lochsteinhülse oder aber an der Außenwand des metallurgischen Gefäßes angesetzt, dann die Zugstange der Vorrichtung mit Hilfe der Kupplungseinrichtung mit dem Gasspülstein verbunden und dann die Zugstange mit Hilfe der Antriebseinrichtung betätigt zu werden, wobei sich der Spülstein dann automatisch aus dem Lochstein bzw. der Lochsteinhülse herausbewegt. Diese Methode ist sehr leicht praktizierbar und in kürzester Zeit durchführbar, ohne daß eine stärkere Schmutzbelästigung auftritt.To release a gas purging plug, only the frame needs to be attached to the perforated brick or the pebble sleeve or to the outer wall of the metallurgical vessel, then the drawbar of the device is connected to the gas purging plug with the aid of the coupling device and then the drawbar is actuated with the aid of the drive device, wherein the sink then automatically moves out of the perforated stone or the perforated stone sleeve. This method is very easy to practice and can be carried out in a very short time without causing excessive pollution.

Das an der Zugstange vorgesehene Kupplungsteil weist vorzugsweise einen zylindrischen Endabschnitt mit zwei zueinander fluchtenden Bohrungen auf.The coupling part provided on the pull rod preferably has a cylindrical end section with two mutually aligned bores.

Wenn als Gegenkupplungsteil nicht das an dem Gasspülstein vorgesehene Gasführungsrohr selbst verwendet wird, ist das Gegenkupplungsteil zweckmäßig als gesonderter Zylinder mit zwei zueinander fluchtenden Bohrungen ausgebildet, der länger als das Gasanschlußrohr ist und dieses konzentrisch umgibt, wobei der Abstand der Bohrungen von dem Blechboden des Gasspülsteins größer ist als die Länge des Gasanschlußrohrs. Der Innendurchmesser des zylindrischen Endabschnitts des an der Zugstange vorgesehenen Kupplungsteils sollte größer als der Außendurchmesser des an dem Spülstein vorgesehenen zylindrischen Gegenkupplungsteils sein.If the gas guide tube provided on the gas purging plug itself is not used as the counter coupling part, the counter coupling part is expediently designed as a separate cylinder with two mutually aligned bores, which is longer than the gas connecting pipe and surrounds it concentrically, the distance between the bores from the sheet metal bottom of the gas purging plug being greater is the length of the gas connection pipe. The inner diameter of the cylindrical end portion of the coupling part provided on the pull rod should be larger than the outer diameter of the cylindrical counter-coupling part provided on the sink.

Eine zweite Lösung der gestellten Aufgabe besteht darin, daß die Kupplungseinrichtung aus zwei ineinandersteckbaren zylindrischen Kupplungsteilen besteht, daß eines der Kupplungsteile mit zumindest zwei in die zylindrische Wand eingesetzten, nach innen und/oder außen vorstehenden radialen Zapfen versehen ist und daß das andere Kupplungsteil eine entsprechende Anzahl von vom äußeren Ende ausgehenden Schlitzen mit zur Aufnahme der Zapfen geeigneter Breite in gleicher Umfangsverteilung aufweist, die jeweils zunächst etwa axial und daran anschließend mehr als einen Zapfendurchmesser senkrecht hierzu in Umfangsrichtung verlaufen, wobei die Kupplungsteile ungehindert ineinander einschiebbar und miteinander verriegelbar-sind.,A second solution to the problem is that the coupling device consists of two interlocking cylindrical coupling parts, that one of the coupling parts is provided with at least two radial pins inserted into the cylindrical wall, projecting inwards and / or outwards, and that the other coupling part has a corresponding one Number of slots extending from the outer end with a width suitable for receiving the pins in the same circumferential distribution, each initially run approximately axially and then more than one pin diameter perpendicular to it in the circumferential direction, the coupling parts being able to be pushed into one another and locked together without hindrance.

Vorzugsweise ragt dabei das Gasanschlußrohr zur freien Zugänglichkeit über das am Gasspülstein angebrachte Kupplungsteil hinaus.The gas connecting pipe preferably projects beyond the coupling part attached to the gas purging plug for free access.

Mit dieser Ausführungsform der Vorrichtung ist es möglich, ohne besondere Berücksichtigung der Lage der zu verriegelnden Zapfen und Schlitze zueinander die Kupplungsteile zunächst so weit ineinander zu schieben, bis die Zapfen an der Stirnfläche des Kupplungsgegenstücks anschlagen, und dann das mit der Zugstange verbundene Kupplungsteil vorzugsweise im Sinne der abgewinkelten Teile der Schlitze unter leichtem Andruck gegenüber dem mit dem Gasspülstein verbundenen Kupplungsteil zu verdrehen, bis die Zapfen von selbst in die axial verlaufenden Schlitze finden und durch Eingreifen in die abgewinkelten Teile der Schlitze eine Verriegelung zwischen den Kupplungsteile herstellt. Diese Ausgestaltung der Kupplungseinrichtung vereinfacht das Ansetzen der Zugstange am Gasspülstein wesentlich und ermöglicht zudem den Verzicht auf ein verlierbares Losteil in Form eines Kupplungsbolzens.With this embodiment of the device, it is possible to first push the coupling parts into each other without special consideration of the position of the pins and slots to be locked until the pins strike the end face of the coupling counterpart, and then the coupling part connected to the pull rod preferably in To turn the angled parts of the slots under slight pressure with respect to the coupling part connected to the gas purging plug until the pins find their way into the axially extending slots and by engaging in the angled parts of the slots creates a lock between the coupling parts. This design of the coupling device considerably simplifies the attachment of the pull rod to the gas purging plug and also makes it possible to dispense with a loose part in the form of a coupling bolt.

Das Gasanschlußrohr kann ohne weiteres über das am Gasspülstein angebrachte Kupplungsteil hinausragen, so daß es frei zugänglich ist.The gas connection pipe can easily protrude beyond the coupling part attached to the gas purging plug, so that it is freely accessible.

Das die Zapfen enthaltende Kupplungsteil kann das Gegenkupplungsteil entweder von außen übergreifen oder von innen in dieses einschiebbar sein. Dementsprechend sind die Zapfen entweder so anzuordnen, daß sie im wesentlichen im Inneren des Kupplungsteils vorstehen oder von außen in die Schlitze des Gegenkupplungsteils hineinragen. Alternativ können die Zapfen auch nach außen über das Kupplungsteil vorstehen und nach außen aus den Schlitzen herausragen.The coupling part containing the pins can either overlap the mating coupling part from the outside or can be inserted into it from the inside. Accordingly, the pins are either to be arranged so that they protrude substantially inside the coupling part or protrude from the outside into the slots of the mating coupling part. Alternatively, the pins can also protrude outwards beyond the coupling part and protrude outwards from the slots.

Da die Zapfen erfindungsgemäß bevorzugt aus Rundstahlstücken bestehen, die mit einer Schweißung im zylindrischen Kupplungsteil fixiert werden, bieten im wesentlichen nach innen ragende Zapfen eine besonders günstige Herstellungsmöglichkeit des Kupplungsteils, während nach außen vorstehende Zapfen den Vorgang des Verriegelns erleichtern, indem sie eine an sich nicht unbedingt erforderliche optische Kontrolle der Relativlage zwischen Zapfen und Schlitzen ermöglichen.Since, according to the invention, the pins preferably consist of round steel pieces which are fixed with a weld in the cylindrical coupling part, essentially inwardly projecting pins offer a particularly favorable possibility of manufacturing the coupling part, while outwardly projecting pins simplify the locking process by not one in itself Allow absolutely necessary optical control of the relative position between pin and slots.

Ein erleichtertes Einführen der Zapfen in die Schlitze ist erfindungsgemäß durch Aufweitungen der Schlitze herbeizuführen, wodurch der Vorgang des Verriegelns abermals erleichtert wird.According to the invention, it is easier to insert the pins into the slots by widening the slots, which again facilitates the locking process.

Um die Verriegelung in ihrer Endlage gegen ein ungewolltes Verdrehen und damit verbundenes Entriegeln zu sichern, können in bevorzugter Ausführung die Enden der Schlitze mit Ausbuchtungen versehen werden, in welche die Zapfen einrasten können. Sobald hiernach die Zugstange entgegen dem Lochstein verspannt wird, ist ein Lösen der Verbindung nicht mehr möglich.In order to secure the locking in its end position against unwanted twisting and associated unlocking, the ends of the slots can be provided with bulges in a preferred embodiment, into which the pins can snap. As soon as the tie rod is then braced against the perforated brick, the connection can no longer be released.

Die erfindungsgemäße Ausgestaltung der Kupplungseinrichtung bietet den besonderen Vorteil, daß es möglich ist, das Gasanschlußrohr von innen über das am Gasspülstein angeordnete Kupplungsgegenteil hinausragend auszuführen. Hiermit wird eine verbesserte Möglichkeit gegeben, zur Herstellung der Betriebsbereitschaft eine Gaszuführleitung ungehindert an den Gasspülstein anzuschließen, ohne daß die Möglichkeit der Ankupplung einer Zugstange irgendwie beeinträchtigt wird. Sofern die Zugstange sich mittels eines Gestells gegenüber der Außenwand des Gefäßes abstützt und gegenüber diesem Gestell axial verschiebbar ausgeführt ist, ist es besonders vorteilhaft, die Zugstange als Gewindespindel auszubilden und mit einem Handrad auszustatten. das sich gegenüber einem festen oder verschieblichen Teil des Gestells abstützen kann und gegenüber der Spindel arretierbar ist. Das Handrad kann hierbei gegenüber dem Gestell auf Distanz gebracht werden und mit der Zugstange verriegelt werden, so daß die Möglichkeit gegeben ist, durch axiales Verschieben und durch Verdrehen des Handrades die Verriegelung der Kupplungsteile herbeizuführen. Die Bedienungsmöglichkeit der Kupplungseinrichtung ist hierdurch abermals verbessert. Die Verriegelungsmöglichkeit zwischen Handrad und Zugstange besteht bevorzugterweise aus einer Querbohrung im Handrad, einem Langloch in der Zugstange und einem einsteckbaren Splint. Das Langloch ermöglicht hierbei ein leichteres Auffinden der Überdeckung der vom Splint durchdrungenen Öffnungen. Nach dem Herstellen der Verriegelung der Kupplungsteile kann der Splint gezogen werden und das Handrad in Anlage mit dem Gestell gebracht werden. Durch weiteres Verdrehen des Handrades wird dann ein Ausziehen des Gasspülsteines bewirkt. Alternativ ist es jedoch auch möglich, das Handrad nur leicht mit dem Gestell zur Anlage zu bringen und danach eine Verschiebung des entsprechenden, beispielsweise als Kolben ausgestalteten Teiles innerhalb des Gestells zu bewirken, um das Ausziehen des Gasspülsteines herbeizuführen. Hierfür ist insbesondere eine Kolben-Zylinder-Anordnung mit hydraulischer oder pneumatischer Betätigung und definiertem Hubweg innerhalb des Gestells geeignet.The design of the coupling device according to the invention offers the particular advantage that it is possible to design the gas connecting pipe from the inside to protrude beyond the coupling counterpart arranged on the gas purging plug. This provides an improved possibility of connecting a gas supply line to the gas purging plug unhindered in order to produce the operational readiness, without the possibility of coupling a pull rod being impaired in any way. If the pull rod is supported by a frame against the outer wall of the vessel and is axially displaceable relative to this frame, it is particularly advantageous to design the pull rod as a threaded spindle and to equip it with a handwheel. that can be supported against a fixed or displaceable part of the frame and can be locked against the spindle. The handwheel can be placed at a distance from the frame and locked with the pull rod, so that it is possible to bring about the locking of the coupling parts by axially shifting and turning the handwheel. The operating possibility of the coupling device is hereby improved again. The possibility of locking between the handwheel and the drawbar preferably consists of a cross hole in the handwheel, an elongated hole in the drawbar and an insertable cotter pin. The elongated hole makes it easier to find the covering of the openings penetrated by the split pin. After locking the coupling parts, the cotter pin can be pulled and the handwheel can be brought into contact with the frame. The gas purging plug is then pulled out by further turning the handwheel. Alternatively, however, it is also possible to bring the handwheel into contact with the frame only slightly and then to cause the corresponding part, for example a piston, to be displaced within the frame in order to cause the gas purging plug to be pulled out. A piston-cylinder arrangement with hydraulic or pneumatic actuation and a defined stroke within the frame is particularly suitable for this.

Das Gestell der Vorrichtung ist vorzugsweise als Dreibein ausgebildet, wobei die drei Stützbeine an einer zentralen Führungshülse für die Zugstange sitzen. Ein solches Gestell läßt sich bequem und standfest an jedem Untergrund abstützen.The frame of the device is preferably designed as a tripod, the three support legs sitting on a central guide sleeve for the pull rod. Such a frame can be supported comfortably and steadily on any surface.

An dem Gestell kann im Anschluß an die Führungshülse eine Aufnahmehalterung für die Antriebseinrichtung zur Verschiebung der Zugstange vorgesehen sein. Als Antriebseinrichtung ist vorzugsweise ein mit Druckgas beaufschlagbarer Hohlkolbenzylinder vorgesehen, der fluchtend zu der Führungshülse angeordnet ist und durch den sich die Zugstange hindurcherstreckt, wobei die Zugstange an oder in dem Hohlkolben zumindest während des Ausziehvorganges arretierbar ist.A receptacle holder for the drive device for displacing the pull rod can be provided on the frame following the guide sleeve. A hollow piston cylinder which can be pressurized with gas is preferably provided as the drive device, which is arranged in alignment with the guide sleeve and through which the pull rod extends, the pull rod being lockable on or in the hollow piston at least during the extraction process.

Die Zugstange kann als Gewindespindel ausgebildet sein, wobei auf der Gewindespindel an dem aus dem Hohlkolben herausragenden Ende, das sich auf der der Kupplungseinrichtung gegenüberliegenden Seite befindet, ein mit entsprechendem Innengewinde versehenes Handrad sitzt, das in Richtung auf die Stirnseite des Hohlkolbens schraubbar und mit einer Anlagefläche an der Stirnseite des Hohlkolbens zur Anlage gebracht werden kann. Auf diese Weise kann das Handrad zur Arretierung der Zugstange relativ zu dem Hohlkolben verwendet werden.The pull rod can be designed as a threaded spindle, on the threaded spindle on the from the hollow piston protruding end, which is located on the opposite side of the coupling device, sits a handwheel with a corresponding internal thread, which can be screwed in the direction of the front side of the hollow piston and can be brought into contact with a contact surface on the front side of the hollow piston. In this way, the handwheel can be used to lock the pull rod relative to the hollow piston.

Ferner bezieht sich die Erfindung auf einen besonders ausgebildeten Gasspülstein, der mit dem entsprechenden Gegenkupplungsteil ausgerüstet ist.Furthermore, the invention relates to a specially designed gas purging plug which is equipped with the corresponding mating coupling part.

Die Erfindung ist in der Zeichnung beispielsweise veranschaulicht und im nachstehenden im einzelnen anhand der Zeichnung beschrieben. Es zeigen :

  • Fig. 1 in perspektivischer Darstellung ein Ausführungsbeispiel einer Ausziehvorrichtung, die mit einem Gasspülstein gekuppelt ist und sich an einem Lochstein abstützt,
  • Fig. 2 in vergrößerter Darstellung einen Schnitt entlang der Linie 11-11 aus Fig. 1.
  • Fig. 3 ein weiteres Ausführungsbeispiel einer Ausziehvorrichtung in ähnlicher Darstellung wie Fig. 1,
  • Fig. 4 in vergrößerter Darstellung einen Schnitt entlang der Linie IV-IV aus Fig. 3 und
  • Fig. 5 eine Ansicht der beiden Kupplungsteile aus Fig. 3 und 4.
The invention is illustrated in the drawing, for example, and described in detail below with reference to the drawing. Show it :
  • 1 is a perspective view of an embodiment of a pull-out device which is coupled to a gas purging plug and is supported on a perforated brick,
  • FIG. 2 shows an enlarged representation of a section along line 11-11 from FIG. 1.
  • 3 shows another embodiment of a pull-out device in a similar representation to FIG. 1,
  • Fig. 4 is an enlarged section along the line IV-IV of Fig. 3 and
  • 5 shows a view of the two coupling parts from FIGS. 3 and 4.

Nach Fig. 1 und 2 der Zeichnung besteht die Ausziehvorrichtung im wesentlichen aus einem Gestell 1, das sich an einem Lochstein 2 bzw. einer Lochsteinhülse oder aber auch an der Außenwand eines in der Zeichnung nicht dargestellten metallurgischen Gefäßes abstützt, einerin dem Gestell 1 geführten Zugstange 3, die zumindest in Richtung von dem Lochstein 2 weg antreibbar ist, sowie einer Kupplungseinrichtung 4, die mit der Zugstange 3 an einem mit einer Blechummantelung versehenen Gasspülstein 5 befestigt werden kann.1 and 2 of the drawing, the pull-out device essentially consists of a frame 1, which is supported on a perforated brick 2 or a perforated stone sleeve or else on the outer wall of a metallurgical vessel not shown in the drawing, a pull rod guided in the frame 1 3, which can be driven at least in the direction away from the perforated brick 2, and a coupling device 4 which can be fastened with the pull rod 3 to a gas purging brick 5 provided with a sheet metal jacket.

Das Gestell 1 weist eine zentrale Führungshülse 6 auf, in der die Zugstange 3 längsverschieblich geführt ist. An der Führungshülse 6 sitzen drei jeweils um 120° zueinander versetzte Stützbeine 7, die an ihrem unteren Ende jeweils mit einem Anlageteller 8 versehen sind, damit das Gestell bequem gegen den Lochstein 2 bzw. die Außenwand des metallurgischen Gefäßes gesetzt werden kann. Ferner weist das Gestell 1 eine Aufnahmehalterung 9 für eine Antriebseinrichtung 10 zur Längsverschiebung der Zugstange 3 auf. Die Aufnahmehalterung ist als geschlitzter Zylinder 11 ausgebildet, in welchem ein als Antriebseinrichtung dienender Hohlkolbenzylinder 12 sitzt. Im vorliegenden Fall genügt ein einfach wirkender Hohlkolbenzylinder, der über eine Zuführungsleitung 13 einseitig mit Druck beaufschlagbar ist.The frame 1 has a central guide sleeve 6, in which the pull rod 3 is guided in a longitudinally displaceable manner. On the guide sleeve 6 there are three support legs 7, each offset by 120 °, which are provided at their lower ends with a contact plate 8 so that the frame can be placed comfortably against the perforated brick 2 or the outer wall of the metallurgical vessel. Furthermore, the frame 1 has a receiving holder 9 for a drive device 10 for the longitudinal displacement of the pull rod 3. The receiving holder is designed as a slotted cylinder 11, in which a hollow piston cylinder 12 serving as a drive device is seated. In the present case, a single-acting hollow piston cylinder is sufficient, which can be pressurized on one side via a feed line 13.

Die in der Führungshülse 6 geführte Zugstange 3, die in dem vorliegenden Beispiel als Gewindespindel ausgebildet ist, erstreckt sich durch die mittlere Öffnung des Hohlkolbens 14 hindurch und weist an ihrem aus dem Hohlkolben 14 herausragenden Ende ein Handrad 15 auf, das auf der als Gewindespindel ausgebildeten Zugstange 3 gegen die zugewandte Stirnseite des Hohlkolbens 14 gedreht und in Anlage mit dieser gebracht werden kann.The pull rod 3 guided in the guide sleeve 6, which is designed as a threaded spindle in the present example, extends through the central opening of the hollow piston 14 and has a handwheel 15 on its end protruding from the hollow piston 14, which is formed on the threaded spindle Pull rod 3 rotated against the facing end face of the hollow piston 14 and can be brought into contact with it.

Durch Betätigung des einfachwirkenden Hohlkolbenzylinders 12 wird die Zugstange 3 durch Druckbeaufschlagung und Mitnahme des Handrades 15 in axialer Richtung verschoben.By actuating the single-acting hollow piston cylinder 12, the pull rod 3 is displaced in the axial direction by pressurization and entrainment of the handwheel 15.

Die Kupplungseinrichtung 4 besteht aus einem am Ende der Zugstange 3 vorgesehenen Kupplungsteil 16 sowie einem an dem Blechboden 17 des Gasspülsteins 5 sitzenden Gegenkupplungsteil 18. Das an der Zugstange 3 sitzende Kupplungsteil 16 ist glockenförmig ausgebildet und weist einen zylindrischen Endabschnitt 19 mit zwei zueinander fluchtenden Bohrungen 20 auf, die auf diametral gegenüberliegenden Seiten des Endabschnitts 19 ausgebildet sind. Der glockenförmig eingeschnürte Abschnitt 21 des Kupplungsteils 16 ist mit einer zentrischen Gewindebohrung 22 versehen, mit der das Kupplungsteil 16 auf die als Gewindespindel ausgebildete Zugstange 3 aufgeschraubt ist. Mit Hilfe einer umlaufenden Schweißnaht 23 ist die Gewindespindel undrehbar an dem Kupplungsteil 16 fixiert.The coupling device 4 consists of a coupling part 16 provided at the end of the pull rod 3 and a mating coupling part 18 seated on the sheet metal base 17 of the gas purging plug 5. The coupling part 16 seated on the pull rod 3 is bell-shaped and has a cylindrical end section 19 with two bores 20 aligned with one another on, which are formed on diametrically opposite sides of the end portion 19. The bell-shaped constricted section 21 of the coupling part 16 is provided with a central threaded bore 22, with which the coupling part 16 is screwed onto the pull rod 3 designed as a threaded spindle. With the help of a circumferential weld seam 23, the threaded spindle is fixed non-rotatably on the coupling part 16.

Das Gegenkupplungsteil 18 ist als Zylinder 24 ausgebildet, der mit einem Stirnende über eine Schweißnaht 25 mit dem Blechboden 17 des Gasspülsteins verbunden ist.The mating coupling part 18 is designed as a cylinder 24, which is connected at one end to the sheet metal base 17 of the gas purging plug via a weld seam 25.

Der Kupplungszylinder 24 umgibt das Gasanschlußrohr 26 mit ausreichendem Abstand, so daß dieser nicht bei dem Anschließen der Gasanschlußleitung im Wege ist. Darüber hinaus ist der Kupplungszylinder 24 länger ausgebildet als das an dem Blechboden 17 sitzende Gasanschlußrohr 26 und weist in seinem über das Gasanschlußrohr 26 hinausragenden Ende auf diametral gegenüberliegenden Seiten zwei zueinander fluchtende Bohrungen 27 auf, die etwa den gleichen Durchmesser aufweisen wie die in dem Kupplungsteil 16 vorgesehenen Bohrungen 20.The coupling cylinder 24 surrounds the gas connection pipe 26 with a sufficient distance so that it is not in the way when connecting the gas connection line. In addition, the coupling cylinder 24 is longer than the gas connection pipe 26 seated on the sheet metal base 17 and has in its end protruding beyond the gas connection pipe 26 on diametrically opposite sides two mutually aligned bores 27 which have approximately the same diameter as those in the coupling part 16 provided holes 20.

Der Außendurchmesser des Kupplungszylinders 24 ist etwas kleiner als der Innendurchmesser des zylindrischen Endabschnitts 19 des Kupplungsteils 16, so daß das Kupplungsteil 16 über den Kupplungszylinder 24 gestülpt werden kann. Wenn die Bohrungen 20 und 27 miteinander Zur Deckung gebracht worden sind, wird durch die vier zueinander fluchtenden Bohrungen ein Kupplungsbolzen 28 gesteckt und damit die formschlüssige Verbindung zwischen der Zugstange 3 und dem Gasspülstein 5 hergestellt. Der Kupplungsbolzen 28 kann mit Hilfe einer Kette 29 unverlierbar an dem Kupplungsteil 16 befestigt sein.The outside diameter of the coupling cylinder 24 is somewhat smaller than the inside diameter of the cylindrical end section 19 of the coupling part 16, so that the coupling part 16 can be put over the coupling cylinder 24. When the bores 20 and 27 have been made to coincide with one another, a coupling bolt 28 is inserted through the four mutually aligned bores and thus the positive connection between the pull rod 3 and the gas purging plug 5 is established. The coupling pin 28 can be captively attached to the coupling part 16 by means of a chain 29.

Zum Herausziehen eines Gasspülsteins 5 aus einem Lochstein 2 wird das Gestell 1 mit seinen drei Stützbeinen 7 gegen den Lochstein 2 bzw. die Außenwand des entsprechenden metallurgischen Gefäßes gestellt und dann wird die Zugstange soweit in Richtung auf den Lochstein 5 verschoben, daß das Kupplungsteil 16 über den Kupplungszylinder 24 greift und der Kupplungsbolzen 28 eingesteckt werden kann. Dann wird das Handrad 15 soweit in Richtung auf den Hohlkolbenzylinder 12 gedreht, bis es an der zugewandten Stirnseite des Hohlkolbens 14 anliegt. Dann wird der Hohlkolbenzylinder 12 über die Zuführungsleitung 13 mit einem Druckmedium beaufschlagt, wodurch der Hohlkolben 14 aus dem Zylinder 12 herausfährt und dabei über das Handrad 15 die Zugstange 3 mitnimmt. Durch die Verschiebung der Zugstange 3 wird der angekuppelte Spülstein 5 automatisch aus dem Lochstein 2 herausgezogen.To pull out a gas purging plug 5 from a perforated brick 2, the frame 1 is placed with its three support legs 7 against the perforated brick 2 or the outer wall of the corresponding metallurgical vessel and then the pull rod is moved so far in the direction of the perforated brick 5 that the coupling part 16 over the clutch cylinder 24 engages and the clutch pin 28 can be inserted. Then it will be the handwheel 15 is rotated so far in the direction of the hollow piston cylinder 12 until it rests on the facing end face of the hollow piston 14. The hollow piston cylinder 12 is then acted upon by a pressure medium via the feed line 13, as a result of which the hollow piston 14 moves out of the cylinder 12 and takes the pull rod 3 with it via the handwheel 15. By shifting the pull rod 3, the coupled sink 5 is automatically pulled out of the perforated block 2.

Bei der in Fig. 3 bis 5 dargestellten Ausführungsform der Vorrichtung stimmen wesentliche Bauelemente mit dem in Fig. 1 und 2 dargestellten Ausführungsbeispiel überein, so daß für diese Bauelemente die gleichen Bezugszahlen gewählt worden sind.In the embodiment of the device shown in FIGS. 3 to 5, essential components correspond to the embodiment shown in FIGS. 1 and 2, so that the same reference numbers have been chosen for these components.

Im wesentlichen unterscheiden sich die beiden Vorrichtungen durch ihre Kupplungseinrichtung. Die Kupplungseinrichtung 4 bei dem zweiten Ausführungsbeispiel besteht aus einem am Ende der Zugstange 3 angeordneten Kupplungsteil 16 sowie einem am Blechboden des Gasspülsteins 5 angeordneten Kupplungsgegenstück 18. Das mit der Zugstange 3 verbundene Kupplungsteil 16 ist als Hohlzylinder ausgebildet und mittels eines konischen Übergangsstückes 21 mit der Zugstange 3 verbunden. Das konische Übergangsstück 21 ist mit einem Ansatz mit einer zentrischen Gewindebohrung 22 versehen, die auf die als Gewindespindel ausgebildete Zugstange 3 aufgeschraubt ist. Mittels einer umlaufenden Schweißnaht 23 sind das Kupplungsteil16 und die Zugstange 3 drehfest miteinander verbunden. Das Kupplungsteil 16 weist zwei in Bohrungen 21 eingesetzte nach innen ragende Zapfen 34 auf, die jeweils außen mit einer umlaufenden Schweißnaht 35 befestigt sind.The two devices essentially differ in their coupling device. The coupling device 4 in the second embodiment consists of a coupling part 16 arranged at the end of the pull rod 3 and a coupling counterpart 18 arranged on the sheet metal base of the gas purging plug 5. The coupling part 16 connected to the pull rod 3 is designed as a hollow cylinder and by means of a conical transition piece 21 with the pull rod 3 connected. The conical transition piece 21 is provided with an approach with a central threaded bore 22 which is screwed onto the pull rod 3 designed as a threaded spindle. The coupling part 16 and the pull rod 3 are connected to one another in a rotationally fixed manner by means of a circumferential weld seam 23. The coupling part 16 has two inwardly projecting pins 34 inserted in bores 21, each of which is fastened on the outside with a circumferential weld seam 35.

Das Kupplungsgegenstück 18 ist ebenfalls als Hohlzylinder ausgebildet und an einem Stirnende mittels einer Schweißnaht 25 mit dem Blechboden 17 des Gasspülsteins 5 verbunden. Das Kupplungsgegenstück 18 ist mit zwei von der Stirnseite ausgehenden abgewinkelten Schlitzen 36 versehen, in welche die Zapfen 34 eingreifen und die mit Aufweitungen 33 am einen Ende und Ausbuchtungen 32 am anderen Ende ausgestattet sind.The coupling counterpart 18 is also designed as a hollow cylinder and is connected at one end to the sheet metal base 17 of the gas purging plug 5 by means of a weld seam 25. The coupling counterpart 18 is provided with two angled slots 36 extending from the end face, into which the pins 34 engage and which are equipped with widenings 33 at one end and bulges 32 at the other end.

Konzentrisch zum Kupplungsgegenstück 18 ist ein Gasanschlußrohr 26 am Gasspülstein 5 angeordnet, welches um einiges aus dem Kupplungsgegenstück 18 herausragt. Das Gasanschlußrohr 26 ist zum Anschluß einer Gaszuführungsleitung beispielsweise mit einem Außengewinde versehen. Es ist in eine zentrale Öffnung im Blechboden 17 des Gasspülsteins eingeschweißt.Concentric to the coupling counterpart 18, a gas connection pipe 26 is arranged on the gas purging plug 5, which protrudes a lot from the coupling counterpart 18. The gas connection pipe 26 is provided, for example, with an external thread for connecting a gas supply line. It is welded into a central opening in the sheet metal base 17 of the gas purging plug.

Der Außendurchmesser des zylindrischen Kupplungsgegenstücks 18 ist etwas kleiner als der Innendurchmesser des zylindrisch en Kupplungsteils 16, so daß das letztgenannte Kupplungsteil 16 über das Kupplungsgegenstück 18 geschoben werden kann. Wenn die nach innen vorstehenden Zapfen 34 hierbei mit der Stirnfläche des Kupplungsgegenteils 18 in Anschlag kommen, ist die Zugstange mit dem Kupplungsteil 16 so lange zu verdrehen, bis die Zapfen 34 in die Schlitze 36 einfahren und die Kupplungsteile durch weiteres Verdrehen miteinander verriegelt werden.The outside diameter of the cylindrical coupling counterpart 18 is somewhat smaller than the inside diameter of the cylindrical coupling part 16, so that the latter coupling part 16 can be pushed over the coupling counterpart 18. If the inwardly projecting pins 34 come into abutment with the end face of the coupling counterpart 18, the pull rod with the coupling part 16 must be turned until the pins 34 move into the slots 36 and the coupling parts are locked together by further turning.

Zur erleichterten Handhabung des Kupplungsteils 16 bzw. der Zugstange 3 ist das Handrad 15 mit einer Querbohrung 31 und die Zugstange 3 in einigem Abstand vom Hubzylinder 14 mit einem Langloch 30 versehen. Beide können durch Verdrehen des Handrades 15 in Überdeckung gebracht werden und mit einem an einer Kette 38 gesicherten Splint 37 drehfest und somit auch axial gegeneinander fixiert werden. Die Verdrehung und Verschiebung des Kupplungsteils 16 kann somit über einen Kraftangriff am Handrad 15 bewirkt werden.To facilitate handling of the coupling part 16 or the pull rod 3, the handwheel 15 is provided with a transverse bore 31 and the pull rod 3 is provided with an elongated hole 30 at some distance from the lifting cylinder 14. Both can be brought into overlap by turning the handwheel 15 and can be fixed against rotation with a split pin 37 secured to a chain 38 and thus also axially fixed against one another. The rotation and displacement of the coupling part 16 can thus be effected via a force application on the handwheel 15.

Zum Herausziehen eines Gasspülsteines 5 aus einem Lochstein 2 wird nach dem vorstehend beschriebenen Verriegeln der Kupplungsteile 16 und 18 das Handrad 15 nach Entfernen des Splintes 37 soweit in Richtung auf den Druckzylinder 12 gedreht, bis es an der ihm zugewandten Stirnseite des Hubkolbens 14 anliegt. Dann wird der Druckzylinder 12 über die Zuführungsleitung 13 mit einem Druckmedium beaufschlagt, wodurch der Hubkolben um einen definierten Betrag aus dem Druckzylinder 12 herausfährt und dabei über das Handrad 15 die Zugstange 3 mitnimmt. Durch die Verschiebung der Zugstange 3 wird der angekuppelte Spülstein 5 wie beim ersten Ausführungsbeispiel aus dem Lochstein 2 herausgezogen.To pull out a gas purging plug 5 from a perforated block 2, after the coupling parts 16 and 18 have been locked as described above, the handwheel 15 is turned towards the pressure cylinder 12 after removing the split pin 37 until it rests on the end face of the reciprocating piston 14 facing it. Then the pressure cylinder 12 is acted upon by the supply line 13 with a pressure medium, whereby the reciprocating piston moves out of the pressure cylinder 12 by a defined amount and thereby takes the pull rod 3 with it via the handwheel 15. By shifting the pull rod 3, the coupled sink 5 is pulled out of the perforated brick 2 as in the first embodiment.

Claims (19)

1. Device for extracting a sheet-metal-encased gas-purge brick with a centric gas-connecting pipe from a perforated brick (2) or a perforated. brick sleeve, consisting of a frame (1) adapted to rest upon the exterior of the perforated brick (2) or the perforated brick sleeve or upon the outer wall of the metallurgical vessel, a drawbar (3) displaceable axially in said frame in relation to said metallurgical vessel and adapted to be set up in alignment with the centreline of the gas-purge brick ; a device (4) provided on said drawbar, for coupling the end thereof to said gas-purge brick and a driving means (10) for displacing said drawbar in a direction away from the perforated brick, characterized in that the coupling device (4) comprises a coupling part (16) provided at the end of a drawbar (3) and having at least one hole (20) disposed at right angles thereto ; a counter-coupling part (18) provided on the sheet-metal end (17) of the gas-purge brick (5) and also having at least one hole (27) disposed at right angles to the axis of the purge brick (5) and a coupling pin (28) adapted to be passed through the holes (20, 27) in alignment with each other.
2. A device according to claim 1, characterized in that the coupling part (16) on the drawbar (3) comprises a cylindrical end section (19) with two holes (20) in alignment with each other.
3. A device according to claim 2, characterized in that the counter-coupling part (18), fitted to the gas-purge brick (5), is in the form of a cylinder (24) which has two holes (27) in alignment with each other and is longer than the gas-connecting pipe (26) which it surrounds concentrically, the distance between the said holes (27) and the sheet-metal end (17) of the gas-purge brick being greater than the length of the gas-connecting pipe (26).
4. A device according to claim 3, characterized in that the inside diameter of the cylindrical end- section (19) of the coupling part (16), provided on the drawbar, is greater than the outside diameter of the cylindrical counter-coupling part (18) fitted to the purge brick.
5. Device for extracting a sheet-metal-encased gas-purge brick with a centric gas-connecting pipe from a perforated brick (2) or a perforated brick sleeve, consisting of a frame (1) adapted to rest upon the exterior of the perforated brick (2) or the perforated brick sleeve or upon the outer wall of the metallurgical vessel, a drawbar (3) displaceable axially in said frame in relation to said metallurgical vessel and adapted to be set up in alignment with the centreline of the gas-purge brick ; a device (4), provided on said drawbar, for coupling the end thereof to said gas-purge brick and a driving means (10) for displacing said drawbar in a direction away from the perforated brick, characterized in that the coupling device (4) consists of two cylindrical coupling parts (16, 18) fittable into one another, and in that one of the coupling parts (16, 18) is provided with at least two radial studs (34) inserted into the cylindrical wall and projecting inwardly and/or outwardly. and in that the other coupling part (18, 16) comprises a corresponding number of slots (36) running from the outer end, of a suitable width for the accommodation of the said studs, arranged in equal peripheral distribution, each of the said slots running initially approximately axially and then running at right angles, in the peripheral direction, for more than one stud-diameter, the said coupling parts (16,18) being adapted to slide freely one into the other and to be locked together.
6. A device according to claim 5, characterized in that, for the purpose of easy accessibility, the gas-connecting pipe (26) projects beyond the coupling part (18) fitted to the gas-purge brick (5).
7. A device according to claim 5 or 6, characterized in that the studs (34) project substantially inwardly, the relevant coupling part (16) being larger in diameter than the coupling part (18) provided with the slots (36).
8. A device according to one of claims 5 to 7, characterized in that the coupling part (16) carrying the studs (34) is secured to the drawbar (3).
9. A device according to one of claims 5 to 8, characterized in that, in order to facilitate the introduction of the studs (34), the outer ends of the slots (36) on the coupling part (18) are widened (33).
10. A device according to one of the claims 5 to 9, characterized in that the dead end of each slot (36) is provided with a bulge (32), directed to the counter-coupling part (16), for engagement with the studs (34).
11. A device according to one of claims 5 to 10. characterized in that the studs (34) are made of steel rod.
12. A device according to one of claims 1 to 11, characterized in that the frame (1) is in the form of a tripod, the three legs (7) being seated upon a central guide-sleeve (6).
13. A device according to claim 11, characterized in that a holder (10) is provided on the frame (1), adjacent the guide-sleeve (6), for the accommodation of the driving means (10) which displaces the drawbar (3).
14. A device according to claim 13, characterized in that the driving means is in the form of a hollow-piston-cylinder (12) actuated by a pressure-medium, arranged in alignment with the guide-sleeve, and traversed by the drawbar (3), the said drawbar being adapted to be locked on or in the hollow piston (14) at least during the extraction process.
15. A device according to one of claims 12 to 14, characterized in that the drawbar (3) is in the form of a threaded spindle which carries, on the end projecting from the hollow piston (14) and remote from the coupling device (4), an internally threaded handwheel (15) which is adapted to be screwed towards the end-face of the said hollow piston and can be brought to bear upon a bearing surface on the opposing end-face thereof.
16. A device according to one of the claims 1 to 15, characterized in that means are provided for locking the handwheel (15) to the threaded spindle (3).
17. A device according to claim 16, characterized in that the end of the threaded spindle (3) projecting from the frame (1) comprises a hole or a slot (30), while the handwheel (15) has a transverse hole (31 the said spindle and handwheel being adapted to be locked together by means of a split-pin (37).
18. A gas-purge brick which can be withdrawn from a perforated brick or a perforated-brick sleeve with a device according to one of claims 1 to 17, characterized by a counter-coupling part (18), provided at the sheet-metal end (17), which consists of a cylinder (24) welded to the said sheet-metal end and surrounding the gas-connecting pipe (26) concentrically, the said counter-coupling part being longer than the said connecting pipe and the section of the said counter-coupling part projecting beyond the said connecting pipe comprising two holes (27) in alignment with each other.
19. A gas-purge brick which can be withdrawn from a perforated brick or a perforated-brick sleeve with a device according to one of claims 1 to 17, characterized by a counter-coupling part (18), provided at the sheet-metal end (17), which consists of a cylinder (24) welded to the said sheet-metal end and surrounding the gas-connecting pipe concentrically, the said counter-coupling part being shorter than the said connecting pipe, and either being provided with at least two radial studs (34) projecting inwardly and/or outwardly, or comprising slots running from its outer end, each of which originally runs approximately axially and then runs at right angles in the peripheral direction.
EP84109793A 1983-08-20 1984-08-17 Withdrawing device for a gas bubbling plug Expired - Lifetime EP0137961B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84109793T ATE32751T1 (en) 1983-08-20 1984-08-17 EXTRACTION DEVICE FOR A GAS FLUSH STICK.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19833330105 DE3330105C2 (en) 1983-08-20 1983-08-20 Pull-out device for a gas purging plug
DE3330105 1983-08-20
DE3402444 1984-01-25
DE19843402444 DE3402444A1 (en) 1984-01-25 1984-01-25 Extraction device for a gas bubble brick

Publications (3)

Publication Number Publication Date
EP0137961A1 EP0137961A1 (en) 1985-04-24
EP0137961B1 true EP0137961B1 (en) 1988-03-02
EP0137961B2 EP0137961B2 (en) 1994-02-02

Family

ID=25813361

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84109793A Expired - Lifetime EP0137961B2 (en) 1983-08-20 1984-08-17 Withdrawing device for a gas bubbling plug

Country Status (4)

Country Link
US (1) US4670958A (en)
EP (1) EP0137961B2 (en)
DE (1) DE3469568D1 (en)
WO (1) WO1985001068A1 (en)

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DE3520207A1 (en) * 1985-06-05 1986-12-11 Didier-Werke Ag, 6200 Wiesbaden NOZZLE ARRANGEMENT FOR INJECTING GASES OR SOLIDS INTO A PAN CONTAINING A METAL MELT
AT383831B (en) * 1985-12-13 1987-08-25 Veitscher Magnesitwerke Ag DEVICE FOR EXTRACTING A GAS PULSE FROM A HOLE
AT386422B (en) * 1986-11-13 1988-08-25 Voest Alpine Ag DEVICE FOR REMOVING HOLE STONES INSERTED IN THE TAPPING OPENING OF METALLURGICAL VESSELS
DE3833506A1 (en) * 1988-10-01 1990-04-05 Didier Werke Ag DEVICE FOR INJECTING A REPAIR SIZE ONTO A HOLE STONE
DE3833502A1 (en) * 1988-10-01 1990-04-05 Didier Werke Ag GASSPUELSTEIN
DE3833504A1 (en) * 1988-10-01 1990-04-05 Didier Werke Ag GAS PLEASE DEVICE
DE3833503A1 (en) * 1988-10-01 1990-04-05 Didier Werke Ag GASSPUELSTEIN
US5018262A (en) * 1989-10-02 1991-05-28 Royce Wheatcroft Belt splicing apparatus
US5146665A (en) * 1989-10-02 1992-09-15 Royce Wheatcroft Belt splicing apparatus
ZA915051B (en) * 1990-07-02 1992-04-29 Veitscher Magnesitwerke Ag Extraction apparatus for purging plugs
AT396885B (en) * 1990-09-14 1993-12-27 Veitscher Magnesitwerke Ag DEVICE FOR THE INSTALLATION AND REMOVAL OF FLUSH BLOCKS FOR METALLURGICAL VESSELS
US5390403A (en) * 1993-12-08 1995-02-21 Ttx Company Pin puller for articulated connector pins
US8522412B1 (en) * 2006-04-03 2013-09-03 Line Walker, LLC Extraction tool lifting system
DE102010004958A1 (en) * 2010-01-12 2011-07-14 SMS Siemag Aktiengesellschaft, 40237 Purge plug installation and removal tool
CN103353232B (en) * 2013-07-26 2015-01-21 朱兴发 Left wheel popup box type porous pull-down plug graphite water gap device of electromagnetic slag smelter

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DE7539031U (en) * 1976-04-29 Eiserntaler Spezial-Schweissbetrieb Gmbh, 5904 Eiserfeld-Eisern Gas purging plug, in particular for melting tanks, crucibles and the like
DE7618016U1 (en) * Burbach, Werner
US2573567A (en) * 1949-06-11 1951-10-30 William L Ruhle Pump and ram hydraulic lifting device
US2677174A (en) * 1951-02-26 1954-05-04 United States Steel Corp Device for pulling blast furnace bosh plates
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US2866370A (en) * 1956-02-02 1958-12-30 John L Biach Bolt-tensioning and nut-seating apparatus
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GB1027537A (en) * 1964-03-14 1966-04-27 British Cast Iron Res Ass Improvements in ladles for treatment of molten metals
DE1268793B (en) * 1964-03-14 1968-05-22 British Cast Iron Res Ass Alve Porous plug arrangement for gassing molten metals in a pouring ladle

Also Published As

Publication number Publication date
EP0137961B2 (en) 1994-02-02
US4670958A (en) 1987-06-09
WO1985001068A1 (en) 1985-03-14
DE3469568D1 (en) 1988-04-07
EP0137961A1 (en) 1985-04-24

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