EP0407712A2 - Refractory stator/rotor unit for a nozzle gate in a vessel holding molten metal - Google Patents

Refractory stator/rotor unit for a nozzle gate in a vessel holding molten metal Download PDF

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Publication number
EP0407712A2
EP0407712A2 EP90109647A EP90109647A EP0407712A2 EP 0407712 A2 EP0407712 A2 EP 0407712A2 EP 90109647 A EP90109647 A EP 90109647A EP 90109647 A EP90109647 A EP 90109647A EP 0407712 A2 EP0407712 A2 EP 0407712A2
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EP
European Patent Office
Prior art keywords
rotor
stator
opening
unit according
container
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90109647A
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German (de)
French (fr)
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EP0407712B1 (en
EP0407712A3 (en
Inventor
Rolf WALTENSPÜHL
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Stopinc AG
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Stopinc AG
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Publication of EP0407712A3 publication Critical patent/EP0407712A3/en
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Publication of EP0407712B1 publication Critical patent/EP0407712B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures

Definitions

  • the invention relates to a refractory stator / rotor unit for a closure in the pouring of a molten metal container, consisting of a tubular stator fastened in the container wall and a rotor guided by the latter within the container, the unit at least one transverse and starting from this one has opening leading from the container, by rotating and / or longitudinally displacing the rotor, the openings can be brought more or less into register and bring about an opening or closing of the closure.
  • Such a closure is preferably suitable for containers in continuous casting plants, from which molten metal is poured into a mold in a controlled manner.
  • the closure is controlled by means of a control process in such a way that a quantity of melt which keeps the mold filling level constant flows from the container into the mold.
  • High demands are placed on the closure serving as an actuator for precisely metered pouring.
  • the present invention is therefore based on the object of developing a refractory stator / rotor unit according to the type described at the outset in such a way that increased operational reliability is achieved in a simple manner.
  • the rotor is formed with two tube pieces which are arranged concentrically to one another and provided with transverse openings and which form the stator sealed inside and outside.
  • the other one that is still functioning permits problem-free termination of the casting or even conditional pouring on.
  • this rotor which is sensitive to bending forces, is reinforced by the double wall and is therefore less prone to breakage.
  • the closure with the other - protected - pipe section is ensured.
  • the latter advantageously has a larger opening than that of the control element and serves primarily as a safety closing element.
  • the opening is preferably seen in the direction of displacement at least three times as long as that of the stator, respectively. of the inner pipe section. Seen radially, the openings of the pipe sections lie approximately on one axis, but can be offset from one another in such a way that when the outer pipe section is closed, it moves into the closed position before the inner one. This prevents residual melt from remaining in the transverse opening of the stator, which would freeze and clog the opening. Further advantageous embodiment variants of arrangements of the openings are explained in the description below.
  • the rotor can be guided out of the container at the top and be displaceable by a drive rod engaging there, or it can also be guided through the stator and driven to be rotatable and / or longitudinally displaceable from below the container.
  • FIG. 1 shows a closure 20 in a partially shown container 10, which has a steel jacket 12 and a refractory lining 14, in which a refractory tubular stator 21 of the closure 20 is embedded in the container spout. At its upper end it is annular and, according to the invention, is in sealing contact with a cylindrical surface of a tube piece 25, 26 of a refractory rotor 22 on its inner or outer cylindrical surface.
  • the transverse openings 27, 24, 28 of the pipe sections 26, 25 or the stator 21 overlap and, together with the central opening 23 in the rotor 22 and stator 21, allow the melt to flow out of the container 10 in a continuous casting mold or the like.
  • the rotor 22 rests on an annular shoulder 29 of the stator 21. It is rotatably connected to a drive rod 18 which engages in its lower part and protects it in the area of the melt by means of its refractory tubular part. Seen in the image plane, the rod 18 is articulated on its driving pin 19 to the rotor 22 and is driven at its upper end by a swivel or rotary motor 15 via an articulated connection 17 and a drive mechanism 16 fastened to the container 10.
  • the amount of melt to be poured is regulated via the openings 26, 24 of the inner tube piece 25 and of the stator 21, which are of the same size, while the openings formed openings 27 of the outer tube section 26 are larger.
  • This pipe section 26 serves as a pure safety closing element, which is used in particular and ensures safe closing when the inner pipe section jams and breaks off in the stator or when leaks occur between the two.
  • the openings 27 designed as recesses are preferably three times as large as the opening 24 of the stator 21 when viewed in the direction of rotation 51. This ensures that the flow cross-section from the fully open to the closed position is formed only by the two openings 24 and 28 and always changes linearly due to the elongated openings, which can also be seen from FIG.
  • the openings 27, 24, 28 of the stator / rotor unit could of course all be of the same size, or that of the inner tube piece could be larger in the opposite sense compared to the other two.
  • FIG 3 a staggered arrangement of the opening 27 of an outer tube piece 26 'to the opening 28 of the inner tube piece 25 is also shown in dash-dot lines as a variant.
  • the opening 27 reaches the closed position in front of the opening 28, as a result of which the residual melt runs out of the transverse stator opening 24.
  • FIG. 4 shows the closure 20 in the closed position, the inner tube piece 25 having a longitudinal groove 37 on its cylindrical outer surface as a variant, which extends from the transverse opening 24 of the stator 21 and extends to the end face of the tube piece 25. It in turn ensures that the residual melt flows out of the stator opening 24, so that this opening 24 is not clogged with frozen melt when the closure is reopened.
  • the longitudinal openings 37 are shown in dash-dotted lines in FIG.
  • the stator / rotor unit 21, 22 according to FIG. 4 also has compared to that of Figure 1, the difference when the rotor 22 rests on the head side 21 'of the stator 21.
  • the closure 30 according to FIG. 5 differs from the closure 20 only in that its rotor 32 is longitudinally displaceable in relation to the fixed tubular stator 31 via a rod 18 'in the vertical direction for opening or closing the closure.
  • the rod 18 ' holds the rotor 30 via a type of ball bearing, which allows deviations in the axis course from the rotor to the stator to be compensated for in the operating state.
  • the outer tube section 36 of the rotor 32 has such a length relative to the inner tube section 35 that its lower edge 36 'is in the fully open position over the openings 34, 38 of the stator 31 or the inner tube section 35 provided for regulated casting.
  • this closure 30 can also be constructed such that the rotor 32 can be displaced in the direction of rotation in addition to the longitudinal adjustment, for example for fine adjustment.
  • On the rod 18 ' would then be additionally provided a rotary connection to the rotor 32.
  • the stator 31 is again tubular and can extend over the length of the container wall, while a pouring tube is connected to this stator sleeve 31 at the bottom.
  • the inner tube pieces 25, 35 of the closures 20, 30 described are cone-shaped, which has a favorable effect on their strength.
  • FIG. 6 shows a closure 40, which in turn has a tubular refractory stator 41 mortared in the container spout and a refractory rotor 42 guided therein.
  • the mushroom-shaped rotor 42 is adjustable below the container 10 by a drive, not shown, in the direction of rotation.
  • the rotor 42 consists of an inner and an outer tube piece 45, 46, which surround the stator 41 in the region of the interior of the vessel in an inner and outer seal.
  • the melt flows in the open position of the closure through the transverse openings 47, 44, 48 of the rotor or stator and through a central flow opening 49 in the rotor 42.
  • the opening 47 of the outer tube section 46 is designed so that you a kind of security locking function is assigned, ie If the actual sealing between the stator 41 and the inner pipe section 45 is no longer present, the pouring process with the outer pipe section 46 can thus be continued or interrupted.
  • the invention is particularly suitable for vertically arranged stator / rotor units, but it could preferably also be used with the closure 40 for horizontal casting.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Processing Of Solid Wastes (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Sliding Valves (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

The gate (20) has a tubular stator (21) and a rotor guided by the latter within the container, forming a unit which has at least one transverse opening and at least one opening starting from the latter and leading out of the vessel (openings 27, 24, 25, 23). The rotor (21) for its part is designed with two mutually concentric tube pieces (25, 26), which are provided with transverse openings (27, 28) and surround the stator (21) sealingly on the inside and outside. The transverse openings (24, 28) of the stator and of the inner tube piece (25), which openings are preferably of the same size, serve for the regulated pouring of the quantity of molten metal, while the outer tube piece (26) with its larger opening (27) is designed as a safety closing member in relation to the other. Operational safety can be considerably improved with this gate system. <IMAGE>

Description

Die Erfindung betrifft eine feuerfeste Stator/Rotor-Einheit für einen Verschluss im Ausguss eines Metallschmelze enthaltenden Behälters, bestehend aus einem in der Behälterwandung befestig­ten rohrförmigen Stator und aus einem von diesem innerhalb des Behälters geführten Rotor, die Einheit mindestens eine quere und von dieser ausgehend eine aus dem Behälter führende Oeffnung aufweist, durch Verdrehen und/oder Längsverschieben des Rotors die Oeffnungen mehr oder weniger in Deckung bringbar sind und ein Oeffnen oder Schliessen des Verschlusses bewirken.The invention relates to a refractory stator / rotor unit for a closure in the pouring of a molten metal container, consisting of a tubular stator fastened in the container wall and a rotor guided by the latter within the container, the unit at least one transverse and starting from this one has opening leading from the container, by rotating and / or longitudinally displacing the rotor, the openings can be brought more or less into register and bring about an opening or closing of the closure.

Ein solcher Verschluss eignet sich vorzugsweise für Behälter bei Stranggiessanlagen, von denen aus Metallschmelze in eine Kokille geregelt abgegossen wird. Ueber einen Regelvorgang wird der Ver­schluss so angesteuert, dass eine den Kokillen-Füllstand konstant haltende Schmelzemenge aus dem Behälter in die Kokille fliesst. An den als Stellglied dienenden Verschluss sind dabei hohe Anforderungen für ein genau dosiertes Abgiessen gestellt.Such a closure is preferably suitable for containers in continuous casting plants, from which molten metal is poured into a mold in a controlled manner. The closure is controlled by means of a control process in such a way that a quantity of melt which keeps the mold filling level constant flows from the container into the mold. High demands are placed on the closure serving as an actuator for precisely metered pouring.

Bei einem Verschluss der eingangs beschriebenen Gattung (DE-OS 37 31 600) ist unter anderem ein in der Gefässwandung befestig­ter Stator und ein in diesem innerhalb des Gefässes geführten Rotor gezeigt, wobei der Rotor sowohl drehbar wie auch längsver­schiebbar durch einen über dem Gefäss angeordneten Antrieb ge­halten ist. Quere Einlauföffnungen in den Wandungen des Stators bzw. Rotors und eine davon ausgehende Längsöffnung im Stator er­möglichen in überdeckter Position der Oeffnungen dieser rohrför­migen Verschlussteile ein Abgiessen der Metallschmelze. Auf den aus keramischem Material bestehenden Rotor bzw. Stator wirken im normalen Betriebszustand relativ kleine Torsions-, Zug- oder an­dere Kräfte. Wenn jedoch beispielsweise zwischen den beiden Ver­schlussteilen infiltrierende und sodann einfrierende Schmelze ein Verklemmen des Rotors in dem Stator bewirkt, kann der Ver­schluss möglicherweise nicht mehr geschlossen und damit der Schmelzabfluss nicht mehr unterbrochen werden.In the case of a closure of the type described at the beginning (DE-OS 37 31 600), a stator fastened in the vessel wall and a rotor guided therein within the vessel are shown, the rotor being rotatable as well as longitudinally displaceable by a drive arranged above the vessel is held. Transverse inlet openings in the walls of the stator or rotor and a longitudinal opening extending therefrom in the stator enable the metal melt to be poured off when the openings of these tubular closure parts are covered. In the normal operating state, relatively small torsional, tensile or other forces act on the rotor or stator, which is made of ceramic material. However, if, for example, melt infiltrating and then freezing between the two closure parts causes the rotor to jam in the stator, the closure may no longer be able to be closed and the melt flow may no longer be interrupted.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine feuerfeste Stator/Rotor-Einheit nach der eingangs beschrie­benen Gattung derart weiterzubilden, dass mit ihr eine erhöhte Betriebssicherheit auf einfache Art und Weise erzielt wird.The present invention is therefore based on the object of developing a refractory stator / rotor unit according to the type described at the outset in such a way that increased operational reliability is achieved in a simple manner.

Die Aufgabe ist erfindungsgemäss dadurch gelöst, dass der Rotor mit zwei konzentrisch zueinander angeordneten, mit queren Oeff­nungen versehenen Rohrstücken ausgebildet ist, welche den Stator innen und aussen abdichtend umgeben. Bei einem möglichen Ver­klemmen des einen Rohrstückes erlaubt das andere noch funktio­nierende einen problemlosen Abbruch des Abgiessens oder sogar ein bedingtes Weitergiessen. Zudem ist dieser auf Biegekräfte empfindliche Rotor durch die Doppelwandung verstärkt und daher weniger bruchgefährdet.The object is achieved according to the invention in that the rotor is formed with two tube pieces which are arranged concentrically to one another and provided with transverse openings and which form the stator sealed inside and outside. In the event of a possible jamming of the one piece of pipe, the other one that is still functioning permits problem-free termination of the casting or even conditional pouring on. In addition, this rotor, which is sensitive to bending forces, is reinforced by the double wall and is therefore less prone to breakage.

Bei starkem Verschleiss und damit möglicher Undichtheit des ei­gentlichen Regelorganes, das vorzugsweise durch den Stator und durch das innere Rohrstück gebildet ist, ist das Verschliessen mit dem anderen - geschonten - Rohrstück gesichert. Letzteres hat dabei vorteilhaft eine grössere Oeffnung als die des Regel­organes und dient primär als Sicherheits-Schliessorgan. Die Oeffnung ist vorzugsweise in Verschieberichtung gesehen min­destens dreimal so lang wie die des Stators resp. des inneren Rohrstückes. Die Oeffnungen der Rohrstücke liegen dabei radial gesehen annähernd auf einer Achse, können aber derart versetzt zueinander sein, dass beim Verschliessen das äussere Rohrstück vor dem inneren in Schliessstellung gelangt. Dadurch wird ver­hindert, dass Restschmelze in der queren Oeffnung des Stators verbleibt, die einfrieren und die Oeffnung verstopfen würde. Weitere vorteilhafte Ausführungsvarianten von Anordnungen der Oeffnungen sind in der nachstehenden Beschreibung erläutert.In the event of heavy wear and thus possible leakage of the actual control element, which is preferably formed by the stator and by the inner pipe section, the closure with the other - protected - pipe section is ensured. The latter advantageously has a larger opening than that of the control element and serves primarily as a safety closing element. The opening is preferably seen in the direction of displacement at least three times as long as that of the stator, respectively. of the inner pipe section. Seen radially, the openings of the pipe sections lie approximately on one axis, but can be offset from one another in such a way that when the outer pipe section is closed, it moves into the closed position before the inner one. This prevents residual melt from remaining in the transverse opening of the stator, which would freeze and clog the opening. Further advantageous embodiment variants of arrangements of the openings are explained in the description below.

Der Rotor kann oben aus dem Behälter geführt sein und von einer dort angreifenden Antriebsstange verschiebbar sein oder er kann auch durch den Stator geführt und von unterhalb des Behälters dreh- und/oder längsverschiebbar angetrieben sein.The rotor can be guided out of the container at the top and be displaceable by a drive rod engaging there, or it can also be guided through the stator and driven to be rotatable and / or longitudinally displaceable from below the container.

Die Erfindung ist nachstehend anhand von Ausführungsbeispielen näher erläutert. Es zeigt:

  • Fig.1 einen Längsschnitt eines Verschlusses mit einer erfin­dungsgemässen Stator/Rotor-Einheit,
  • Fig.2 eine Seitenansicht der Stator/Rotor-Einheit nach Fig. 1,
  • Fig.3 einen Querschnitt der Einheit nach Fig.1 entlang den Linien III-III,
  • Fig.4 und Fig.5 Varianten von Einheiten jeweils im Teilschnitt und
  • Fig.6 einen Längschnitt eines Verschlusses mit einem unterhalb des Behälters angetriebenen Rotor.
The invention is explained in more detail below on the basis of exemplary embodiments. It shows:
  • 1 shows a longitudinal section of a closure with a stator / rotor unit according to the invention,
  • 2 shows a side view of the stator / rotor unit according to FIG. 1,
  • 3 shows a cross section of the unit according to FIG. 1 along the lines III-III,
  • Fig.4 and Fig.5 variants of units each in partial section and
  • 6 shows a longitudinal section of a closure with a rotor driven below the container.

Fig.1 zeigt einen Verschluss 20 in einem teilweise dargestellten Behälter 10, der einen Stahlmantel 12 sowie eine feuerfeste Aus­kleidung 14 hat, in der im Behälterausguss ein feuerfester rohr­förmiger Stator 21 des Verschlusses 20 eingebettet ist. An sei­nem oberen Ende ist er ringförmig ausgebildet und steht an sei­ner inneren respektive äusseren Zylinderfläche erfindungsgemäss mit je einer zylindrischen Fläche eines Rohrstückes 25, 26 eines feuerfesten Rotors 22 in abdichtender Berührung. In der gezeig­ten Offenstellung des Verschlusses 20 überdecken sich die queren Oeffnungen 27, 24, 28 der Rohrstücke 26, 25 bzw. des Stators 21 und ermöglichen zusammen mit der zentrischen Oeffnung 23 im Rotor 22 und Stator 21 ein Abfliessen der Schmelze aus dem Be­hälter 10 in eine Stranggiesskokille oder dergleichen.1 shows a closure 20 in a partially shown container 10, which has a steel jacket 12 and a refractory lining 14, in which a refractory tubular stator 21 of the closure 20 is embedded in the container spout. At its upper end it is annular and, according to the invention, is in sealing contact with a cylindrical surface of a tube piece 25, 26 of a refractory rotor 22 on its inner or outer cylindrical surface. In the open position of the closure 20 shown, the transverse openings 27, 24, 28 of the pipe sections 26, 25 or the stator 21 overlap and, together with the central opening 23 in the rotor 22 and stator 21, allow the melt to flow out of the container 10 in a continuous casting mold or the like.

Der Rotor 22 liegt gemäss Fig.2 an einem ringförmigen Absatz 29 des Stators 21 auf. Er ist mit einer in seinem unteren Teil an­greifenden Antriebsstange 18 drehbar verbunden und schützt diese im Bereich der Schmelze durch seinen feuerfesten rohrförmigen Teil. In der Bildebene gesehen ist die Stange 18 an ihrem Mit­nehmerbolzen 19 zum Rotor 22 gelenkig gelagert und sie ist an ihrem oberen Ende über eine Gelenkverbindung 17 und einen am Behälter 10 befestigten Antriebsmechanismus 16 von einem Schwenk- oder Drehmotor 15 angetrieben.According to FIG. 2, the rotor 22 rests on an annular shoulder 29 of the stator 21. It is rotatably connected to a drive rod 18 which engages in its lower part and protects it in the area of the melt by means of its refractory tubular part. Seen in the image plane, the rod 18 is articulated on its driving pin 19 to the rotor 22 and is driven at its upper end by a swivel or rotary motor 15 via an articulated connection 17 and a drive mechanism 16 fastened to the container 10.

Das Regulieren der abzugiessenden Schmelzemenge erfolgt über die Oeffnungen 26, 24 des inneren Rohrstückes 25 und des Stators 21, die von derselben Grösse sind, während die als Ausnehmungen aus­ gebildeten Oeffnungen 27 des äusseren Rohrstückes 26 grösser sind. Dieses Rohrstück 26 dient dabei als reines Sicherheits-­Schliessorgan, das insbesondere dann zum Einsatz kommt und für ein sicheres Schliessen sorgt, wenn das innere Rohrstück im Stator verklemmt und abbricht oder wenn Undichtheiten zwischen diesen beiden auftreten. Die als Ausnehmung ausgebildeten Oeff­nungen 27 sind in Drehrichtung 51 gesehen vorzugsweise dreimal so gross wie die Oeffnung 24 des Stators 21. Dadurch ist ge­sichert, dass der Durchflussquerschnitt von der vollen Offen- bis zur Schliessstellung nur durch die beiden Oeffnungen 24 bzw. 28 gebildet ist und sich dabei durch die länglichen Oeffnungen stets linear ändert, was auch aus der Fig.3 ersicht­lich ist. Die Oeffnungen 27, 24, 28 der Stator/Rotor-Einheit könnten selbstverständlich alle auch von gleicher Grösse sein, oder aber die des inneren Rohrstückes könnte in umgekehrtem Sinne gegenüber den beiden andern grösser sein.The amount of melt to be poured is regulated via the openings 26, 24 of the inner tube piece 25 and of the stator 21, which are of the same size, while the openings formed openings 27 of the outer tube section 26 are larger. This pipe section 26 serves as a pure safety closing element, which is used in particular and ensures safe closing when the inner pipe section jams and breaks off in the stator or when leaks occur between the two. The openings 27 designed as recesses are preferably three times as large as the opening 24 of the stator 21 when viewed in the direction of rotation 51. This ensures that the flow cross-section from the fully open to the closed position is formed only by the two openings 24 and 28 and always changes linearly due to the elongated openings, which can also be seen from FIG. The openings 27, 24, 28 of the stator / rotor unit could of course all be of the same size, or that of the inner tube piece could be larger in the opposite sense compared to the other two.

In Fig.3 ist ferner als Variante eine versetzte Anordnung der Oeffnung 27 eines äusseren Rohrstückes 26′ zu der Oeffnung 28 des inneren Rohrstückes 25 strichpunktiert gezeigt. Die Oeffnung 27 erreicht die Schliessstellung vor der Oeffnung 28, wodurch die Restschmelze aus der queren Statoröffnung 24 ausläuft.In Figure 3, a staggered arrangement of the opening 27 of an outer tube piece 26 'to the opening 28 of the inner tube piece 25 is also shown in dash-dot lines as a variant. The opening 27 reaches the closed position in front of the opening 28, as a result of which the residual melt runs out of the transverse stator opening 24.

In Fig.4 ist der Verschluss 20 in Schliessstellung gezeigt, wo­bei als Variante das innere Rohrstück 25 an seiner zylindrischen Aussenfläche eine Längsnut 37 hat, die von der queren Oeffnung 24 des Stators 21 ausgeht und sich bis zur Stirnseite des Rohr­stückes 25 erstreckt. Mit ihr ist wiederum ein Ausfliessen der Restschmelze aus der Statoröffnung 24 gewährleistet, wodurch diese Oeffnung 24 beim Wiederöffnen des Verschlusses nicht mit eingefrorener Schmelze verstopft ist. Die Längsöffnungen 37 sind ergänzungshalber noch in Fig.3 strichpunktiert dargestellt. Die Stator/Rotor-Einheit 21, 22 gemäss der Fig.4 hat zudem gegenüber der nach Fig.1 den Unterschied, als der Rotor 22 an der Kopfseite 21′ des Stators 21 aufliegt.4 shows the closure 20 in the closed position, the inner tube piece 25 having a longitudinal groove 37 on its cylindrical outer surface as a variant, which extends from the transverse opening 24 of the stator 21 and extends to the end face of the tube piece 25. It in turn ensures that the residual melt flows out of the stator opening 24, so that this opening 24 is not clogged with frozen melt when the closure is reopened. The longitudinal openings 37 are shown in dash-dotted lines in FIG. The stator / rotor unit 21, 22 according to FIG. 4 also has compared to that of Figure 1, the difference when the rotor 22 rests on the head side 21 'of the stator 21.

Der Verschluss 30 nach Fig.5 unterscheidet sich von dem Ver­schluss 20 nur insofern, als sein Rotor 32 gegenüber dem fest­stehenden rohrförmigen Stator 31 über eine Stange 18′ in Höhen­richtung längsverschiebbar zum Oeffnen bzw. Schliessen des Ver­schlusses bewegbar ist. Die Stange 18′ hält den Rotor 30 über eine Art Kugellagerung, die es erlaubt, dass Abweichungen des Achsverlaufes vom Rotor zum Stator in Betriebszustand ausge­glichen werden. Das äussere Rohrstück 36 des Rotors 32 hat ge­genüber dem inneren Rohrstück 35 eine solche Länge, dass seine Unterkante 36′ in voller Offenstellung sich über den zum regu­lierten Abgiessen vorgesehenen Oeffnungen 34, 38 des Stators 31 bzw. des inneren Rohrstückes 35 befindet. In Schliessstellung (strichpunktiert gezeigt) sind die Statoröffnungen 34 dann auch vom äusseren Rohrstück 36 von der Schmelze abgedeckt. Erfin­dungsgemäss kann dieser Verschluss 30 auch so konstruiert sein, dass der Rotor 32 nebst der Längsverstellung beispielsweise zum Feinregulieren in Drehrichtung verschiebbar ist. An der Stange 18′ wäre dann zusätzlich eine Drehverbindung zum Rotor 32 vorzu­sehen. Der Stator 31 ist wiederum rohrförmig ausgebildet und kann sich über die Länge der Behälterwandung erstrecken, während unten an diese Statorhülse 31 ein Giessrohr angeschlossen ist.The closure 30 according to FIG. 5 differs from the closure 20 only in that its rotor 32 is longitudinally displaceable in relation to the fixed tubular stator 31 via a rod 18 'in the vertical direction for opening or closing the closure. The rod 18 'holds the rotor 30 via a type of ball bearing, which allows deviations in the axis course from the rotor to the stator to be compensated for in the operating state. The outer tube section 36 of the rotor 32 has such a length relative to the inner tube section 35 that its lower edge 36 'is in the fully open position over the openings 34, 38 of the stator 31 or the inner tube section 35 provided for regulated casting. In the closed position (shown in dash-dot lines), the stator openings 34 are then also covered by the outer tube piece 36 from the melt. According to the invention, this closure 30 can also be constructed such that the rotor 32 can be displaced in the direction of rotation in addition to the longitudinal adjustment, for example for fine adjustment. On the rod 18 'would then be additionally provided a rotary connection to the rotor 32. The stator 31 is again tubular and can extend over the length of the container wall, while a pouring tube is connected to this stator sleeve 31 at the bottom.

Die inneren Rohrstücke 25, 35 der beschriebenen Verschlüsse 20, 30 sind zapfenförmig ausgebildet, was sich günstig auf ihre Festigkeit auswirkt.The inner tube pieces 25, 35 of the closures 20, 30 described are cone-shaped, which has a favorable effect on their strength.

Fig.6 zeigt einen Verschluss 40, der wiederum einen im Behälter­ausguss eingemörtelten rohrförmigen feuerfesten Stator 41 und einen in diesem geführten feuerfesten Rotor 42 aufweist. Der pilzförmige Rotor 42 ist unterhalb des Behälters 10 von einem nicht näher dargestellten Antrieb in Drehrichtung verstellbar.6 shows a closure 40, which in turn has a tubular refractory stator 41 mortared in the container spout and a refractory rotor 42 guided therein. The mushroom-shaped rotor 42 is adjustable below the container 10 by a drive, not shown, in the direction of rotation.

Nach der Erfindung besteht der Rotor 42 aus einem inneren und einem äusseren Rohrstück 45, 46, welche den Stator 41 im Bereich des Gefässinnern innen und aussen abdichtend umgeben. Ausgehend vom Inneren des Behälters 10 fliesst die Schmelze in Offenstel­lung des Verschlusses durch die queren Oeffnungen 47, 44, 48 des Rotors bzw. Stators und durch eine zentrale Durchflussöffnung 49 im Rotor 42. Die Oeffnung 47 des äusseren Rohrstückes 46 ist so ausgebildet, dass ihr eine Art Sicherheits-Schliessfunktion zu­kommt, d.h. wenn die eigentliche Abdichtung zwischen dem Stator 41 und dem inneren Rohrstück 45 nicht mehr gegeben ist, kann da­mit der Abgiessvorgang mit dem äusseren Rohrstück 46 weiterge­führt oder unterbrochen werden.According to the invention, the rotor 42 consists of an inner and an outer tube piece 45, 46, which surround the stator 41 in the region of the interior of the vessel in an inner and outer seal. Starting from the inside of the container 10, the melt flows in the open position of the closure through the transverse openings 47, 44, 48 of the rotor or stator and through a central flow opening 49 in the rotor 42. The opening 47 of the outer tube section 46 is designed so that you a kind of security locking function is assigned, ie If the actual sealing between the stator 41 and the inner pipe section 45 is no longer present, the pouring process with the outer pipe section 46 can thus be continued or interrupted.

Die Erfindung eignet sich insbesondere für senkrecht angeordnete Stator/Rotor-Einheiten, sie liesse sich jedoch vorzugsweise mit dem Verschluss 40 auch für horizontales Abgiessen anwenden.The invention is particularly suitable for vertically arranged stator / rotor units, but it could preferably also be used with the closure 40 for horizontal casting.

Claims (14)

1. Feuerfeste Stator/Rotor-Einheit für einen Verschluss im Aus­guss eines Metallschmelze enthaltenden Behälters, bestehend aus einem in der Behälterwandung befestigten rohrförmigen Stator und aus einem von diesem innerhalb des Behälters ge­führten Rotor, die Einheit mindestens eine quere und von dieser ausgehend eine aus dem Behälter führende Oeffnung aufweist, durch Verdrehen und/oder Längsverschieben des Rotors die Oeffnungen mehr oder weniger in Deckung bringbar sind und ein Oeffnen oder Schliessen des Verschlusses bewir­ken, dadurch gekennzeichnet, dass der Rotor (22,32,42) mit zwei konzentrisch zueinander angeordneten, mit queren Oeffnungen (27,28,38,47,48) versehenen Rohr­stücken (25,26,35,36,45,46) ausgebildet ist, welche den Stator (21,31,41) innen und aussen abdichtend umgeben.1. Refractory stator / rotor unit for a closure in the pouring of a molten metal container, consisting of a tubular stator fastened in the container wall and a rotor guided by the latter within the container, the unit has at least one transverse one and starting from this one from the Has container-guiding opening, by rotating and / or longitudinally displacing the rotor, the openings can be more or less coincident and bring about an opening or closing of the closure, characterized in that the rotor (22, 32, 42) is arranged with two concentrically arranged, with transverse openings (27, 28, 38, 47, 48) tube pieces (25, 26, 35, 36, 45, 46) which surround the stator (21, 31, 41) inside and outside in a sealing manner. 2. Einheit nach Anspruch 1, dadurch gekenn­zeichnet, dass das innere oder äussere Rohrstück (25,26,35,36,45,46) sowie der Stator (21,31,41) mindestens je eine annähernd gleichgrosse quere, zum regulierten Abgiessen der Schmelzmenge dienende Oeffnung (28,24,38,34,44,48) aufweisen, während das andere Rohrstück (26,36,46,25,35,45) als Sicherheits-Schliessorgan ausge­bildet ist, dabei eine oder mehrere quere Oeffnungen (27,47) hat, die grösser als die Oeffnung (24,34,44) des Stators (21,31,41) ist.2. Unit according to claim 1, characterized in that the inner or outer pipe section (25,26,35,36,45,46) and the stator (21,31,41) each have at least one approximately equal cross, for regulated casting of Have melt opening serving (28,24,38,34,44,48) while the other piece of pipe (26,36,46,25,35,45) is designed as a safety closing element, has one or more transverse openings (27,47) that are larger than the opening (24,34,44) of the stator (21, 31.41). 3. Einheit nach Anspruch 2, dadurch gekenn­zeichnet, dass die Oeffnung (27,47) des äusseren Rohrstückes (26,36,46) in Verschieberichtung mindestens die dreifache Länge der Statoröffnung (24,34,44) hat.3. Unit according to claim 2, characterized in that the opening (27,47) of the outer tube piece (26,36,46) in the direction of displacement has at least three times the length of the stator opening (24,34,44). 4. Einheit nach einem der Ansprüche 1, 2 oder 3, dadurch gekennzeichnet, dass die Zentren der Oeffnungen (27,28,47,48) der beiden Rohrstücke (25,26,45,46) radial an­nähernd auf einer Achse verlaufen.4. Unit according to one of claims 1, 2 or 3, characterized in that the centers of the openings (27,28,47,48) of the two pipe sections (25,26,45,46) run radially approximately on one axis. 5. Einheit nach einem der Ansprüche 2 oder 3, dadurch ge­kennzeichnet, dass die Oeffnung (27,28) des äusseren zu der des inneren Rohrstückes (25,26′) in Ver­schieberichtung des Rotors (22) derart versetzt angeordnet ist, dass beim Verschliessen das äussere Rohrstück (26′,25) vor dem inneren die Schliessstellung erreicht.5. Unit according to any one of claims 2 or 3, characterized in that the opening (27,28) to that of the inner pipe section is arranged offset in the displacement direction of the rotor (22) so the outer (25,26 ') that when closing the outer pipe section (26 ', 25) reaches the closed position before the inner one. 6. Einheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das innere Rohrstück (25) an seiner Aussenseite mindestens eine Längsnut (37) hat, die in Schliessstellung des Verschlusses (20) mit der jeweiligen Statoröffnung (24) in Ueberdeckung ist, um ein Abfliessen verbleibender Restschmelze aus dieser Statoröffnung (24) zu ermöglichen.6. Unit according to one of the preceding claims, characterized in that the inner tube piece (25) has on its outside at least one longitudinal groove (37) which is in overlap with the respective stator opening (24) in the closed position of the closure (20) allow residual melt to flow out of this stator opening (24). 7. Einheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der oben aus dem Behälter geführte Rotor (22,32) mit einer Antriebsstange (18,18′) dreh- und/oder längsverschiebbar verbunden ist.7. Unit according to one of the preceding claims, characterized in that the rotor (22, 32) guided out of the container at the top is connected to a drive rod (18, 18 ') so as to be rotatable and / or longitudinally displaceable. 8. Einheit nach Anspruch 7,dadurch gekennzeichnet, dass das äussere Rohrstück (36) eines längsverschiebbaren Rotors (32) eine untere Stirnfläche (36′) hat, die oberhalb der queren Oeffnung (38) des inneren Rohrstückes (35) liegt.8. Unit according to claim 7, characterized in that the outer tube section (36) of a longitudinally displaceable rotor (32) has a lower end face (36 ') which lies above the transverse opening (38) of the inner tube section (35). 9. Einheit nach einem der Ansprüche 1 bis 5, dadurch ge­kennzeichnet, dass der Rotor (42) durch den Stator (41) geführt ist und unterhalb des Behälters (10) dreh- und/oder längsverschiebbar antreibbar ist.9. Unit according to one of claims 1 to 5, characterized in that the rotor (42) is guided by the stator (41) and below the container (10) is rotatably and / or longitudinally drivable. 10. Feuerfester Rotor für eine Einheit nach einem der vorherge­henden Ansprüche, dadurch gekennzeichnet, dass sein Kopfteil mit zwei konzentrisch zueinander angeordneten, mit queren Oeffnungen (27,28,38,47,48) versehenen Rohr­stücken (25,26,35,36,45,46) ausgebildet ist.10. Refractory rotor for a unit according to one of the preceding claims, characterized in that its head part with two concentrically arranged, with transverse openings (27,28,38,47,48) provided tube pieces (25,26,35,36, 45,46) is formed. 11. Rotor nach Anspruch 10, dadurch gekenn­zeichnet, dass die Oeffnung (27,28) des äusseren ge­genüber der des inneren Rohrstückes (26,25) oder umgekehrt grösser ist.11. Rotor according to claim 10, characterized in that the opening (27, 28) of the outer is larger than that of the inner tube piece (26, 25) or vice versa. 12. Rotor nach Anspruch 10, dadurch gekennzeichnet, dass sein inneres Rohrstück (25,35) zapfenförmig ausgebildet ist.12. A rotor according to claim 10, characterized in that its inner tube piece (25, 35) is cone-shaped. 13. Rotor nach einem der Ansprüche 9, 10 oder 11, dadurch ge­kennzeichnet, dass der Rotor (42) pilzförmig aus­gebildet ist und sein inneres Rohrstück (45) mindestens eine quere und von dieser ausgehend eine unten aus dem Behälter (19) führende Oeffnung (48,49) aufweist.13. Rotor according to one of claims 9, 10 or 11, characterized in that the rotor (42) is mushroom-shaped and its inner tube piece (45) at least one transverse and starting from this a bottom opening out of the container (19) leading opening ( 48.49). 14. Feuerfester rohrförmiger Stator für eine Einheit nach An­spruch 1, dadurch gekennzeichnet, dass sein Kopfteil als zylindrischer Ring mit mindestens einer queren Oeffnung (24,34,44) ausgebildet ist.14. Refractory tubular stator for a unit according to claim 1, characterized in that its head part is designed as a cylindrical ring with at least one transverse opening (24, 34, 44).
EP90109647A 1989-07-11 1990-05-21 Refractory stator/rotor unit for a nozzle gate in a vessel holding molten metal Expired - Lifetime EP0407712B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH593/89 1989-02-20
CH2593/89A CH681435A5 (en) 1989-07-11 1989-07-11

Publications (3)

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EP0407712A2 true EP0407712A2 (en) 1991-01-16
EP0407712A3 EP0407712A3 (en) 1992-05-06
EP0407712B1 EP0407712B1 (en) 1995-08-16

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ID=4237264

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Application Number Title Priority Date Filing Date
EP90109647A Expired - Lifetime EP0407712B1 (en) 1989-07-11 1990-05-21 Refractory stator/rotor unit for a nozzle gate in a vessel holding molten metal

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Country Link
US (1) US5085356A (en)
EP (1) EP0407712B1 (en)
JP (1) JPH0352759A (en)
CN (1) CN1048670A (en)
AT (1) ATE126460T1 (en)
BR (1) BR9003263A (en)
CA (1) CA2020741A1 (en)
CH (1) CH681435A5 (en)
DE (1) DE59009527D1 (en)
ES (1) ES2076255T3 (en)
GR (1) GR3017827T3 (en)
IL (1) IL94682A (en)
ZA (1) ZA904508B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0567227A1 (en) * 1992-03-24 1993-10-27 Crane Limited A stopper device
FR2765316A1 (en) * 1997-06-30 1998-12-31 Vesuvius France Sa ELECTRIC OVEN WITH AN ECCENTRIC CASING HOLE AND METHOD FOR PRODUCING STEEL IN THIS OVEN

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU7321694A (en) * 1993-07-02 1995-01-24 Frank W. Schaefer, Inc. Low pressure casting process and apparatus
US5590681A (en) * 1993-07-02 1997-01-07 Frank W. Schaefer, Inc. Valve assembly
CH688712A5 (en) * 1994-07-22 1998-01-30 Stopinc Ag Vessel closure member on the spout of a molten metal containing.
JP4924913B2 (en) * 2004-10-29 2012-04-25 東海高熱工業株式会社 Opening and closing device for ash melting furnace

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0308597A2 (en) * 1987-09-19 1989-03-29 Didier-Werke Ag Rotary sliding gate for a metallugical vessel just as rotor and or stator for such a rotary gate
EP0361052A2 (en) * 1988-09-29 1990-04-04 Stopinc Aktiengesellschaft Refractory stator-rotor unit for a nozzle gate in a vessel holding molten metal

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU591889B2 (en) * 1985-03-26 1989-12-21 British Steel Plc Improvements in or relating to outlet valves for metal containing vessels
JPS63264255A (en) * 1987-04-20 1988-11-01 Tokyo Yogyo Co Ltd Flow rate control device for continuous casting
JPS63264256A (en) * 1987-04-20 1988-11-01 Tokyo Yogyo Co Ltd Flow rate control device for continuous casting

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0308597A2 (en) * 1987-09-19 1989-03-29 Didier-Werke Ag Rotary sliding gate for a metallugical vessel just as rotor and or stator for such a rotary gate
EP0361052A2 (en) * 1988-09-29 1990-04-04 Stopinc Aktiengesellschaft Refractory stator-rotor unit for a nozzle gate in a vessel holding molten metal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0567227A1 (en) * 1992-03-24 1993-10-27 Crane Limited A stopper device
FR2765316A1 (en) * 1997-06-30 1998-12-31 Vesuvius France Sa ELECTRIC OVEN WITH AN ECCENTRIC CASING HOLE AND METHOD FOR PRODUCING STEEL IN THIS OVEN
WO1999001710A1 (en) * 1997-06-30 1999-01-14 Vesuvius France S.A. Electric furnace with eccentric taphole and process of steel making in this furnace

Also Published As

Publication number Publication date
ES2076255T3 (en) 1995-11-01
IL94682A (en) 1993-04-04
JPH0352759A (en) 1991-03-06
EP0407712B1 (en) 1995-08-16
US5085356A (en) 1992-02-04
CA2020741A1 (en) 1991-01-12
ATE126460T1 (en) 1995-09-15
GR3017827T3 (en) 1996-01-31
DE59009527D1 (en) 1995-09-21
CH681435A5 (en) 1993-03-31
EP0407712A3 (en) 1992-05-06
IL94682A0 (en) 1991-04-15
BR9003263A (en) 1991-08-27
ZA904508B (en) 1991-04-24
CN1048670A (en) 1991-01-23

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