EP0480239B1 - Shut-off and/or control device for the outlet of a metallurgical vessel - Google Patents

Shut-off and/or control device for the outlet of a metallurgical vessel Download PDF

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Publication number
EP0480239B1
EP0480239B1 EP91116284A EP91116284A EP0480239B1 EP 0480239 B1 EP0480239 B1 EP 0480239B1 EP 91116284 A EP91116284 A EP 91116284A EP 91116284 A EP91116284 A EP 91116284A EP 0480239 B1 EP0480239 B1 EP 0480239B1
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EP
European Patent Office
Prior art keywords
closure
cross
control device
inner end
internal space
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Expired - Lifetime
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EP91116284A
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German (de)
French (fr)
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EP0480239A1 (en
Inventor
Martin Wiesel
Ullrich Hintzen
Andreas Schuler
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Didier Werke AG
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Didier Werke AG
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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 closure and / or control device for the pouring of a metallurgical vessel, in which a drive rod extends in an interior of a refractory, ceramic closure and / or control member, by means of which the closure and / or control member can be rotated about its longitudinal axis is and the outer end of which can be coupled to a drive unit for the closure and / or regulating member and whose inner end is tiltably mounted in the region of the bottom of the interior.
  • Such a closure and control device is described in where 88/04 209.
  • the drive rod is tiltably mounted on the bottom of the interior by means of a ball head.
  • a structural angular misalignment between the longitudinal axis (axis of rotation) of the closure and control element and the longitudinal axis (axis of rotation) of the drive rod can be compensated.
  • rotary movements of the drive rod cannot be transmitted to the locking and regulating member.
  • you need special measures are taken. These are structurally complex and impair the tiltability of the drive rod in the locking and regulating member.
  • DE 37 43 383 A1 describes a locking and control device in which the locking and control element can only be raised or lowered by means of the drive rod, but cannot be rotated.
  • the drive rod acts on the closure and regulating element by means of a ball head on the bottom of the interior of the closure and regulating member, close to the outlet opening of the closure and regulating device.
  • EP 0 303 475 A1 describes a closure and control device in which the drive unit acts on the top of the closure and control element itself.
  • the object of the invention is to propose a closure and / or control device of the type mentioned in the introduction, in which the design of the inner end of the drive rod and the bottom of the interior, on the one hand, enables the tiltability and, on the other hand, the least possible play-free transmission of the rotary movement.
  • the above object is achieved in a closure and / or control device of the type mentioned above in that the interior in the region of its base and the drive rod at the inner end form cross-sectional profiles deviating from the circular shape transversely to the longitudinal axis, which are in engagement with one another and on one Line of contact against each other, and that at least one of the Cross-sectional profiles tapered conically in the direction of the longitudinal axis, as a result of which there is a space above and below the line of contact which allows the drive rod to tilt without the cross-sectional profiles coming out of engagement.
  • the taper of at least one of the cross-sectional profiles and the resulting free space ensures that the play-free drive also exists when the drive rod - rotated by the drive unit - performs tilting movements with respect to the closing and / or regulating member. Such tilting movements do not lead to the locking and / or regulating member jamming at a bearing point.
  • the tapered cross-sectional profile can either be at a recess in the bottom of the interior or be provided on the outside at the inner end of the drive rod. It is also possible to provide this cross-sectional profile both on a depression in the base and on the outside at the inner end of the drive rod.
  • the conical taper can be designed such that it merges into a rounding or curvature in the region of the line of contact of the cross-sectional profiles. This improves the tiltable storage.
  • the cross-sectional profiles deviating from the circular shape can have, for example, a cross shape or a star shape. You can also form a wavy circumferential contour. Depending on the application, structurally simple designs can be selected. It is also favorable for this that above the bottom of the interior and above the inner end of the drive rod, no cross-sectional profiles matched to one another are necessary.
  • the closure and / or control element above the base can be designed as a tube with an annular cross section and the drive rod can be of a circular shape continue deviating cross-section to its outer end. This considerably simplifies the manufacture of the closure and / or control member and the drive rod.
  • the latter can be made entirely or partially of ceramic material, preferably based on ZrO2, SiO, Al2O3 or Si3N4, and can be produced in slip casting, in continuous casting or by isostatic pressing. Both full profiles and hollow profiles can be used.
  • a metallurgical vessel 1 has a cylindrical outlet member 2 (stator). This is with a lateral inlet opening 3 for the melt located in the vessel 1 Mistake.
  • a closure and control member 4 (rotor) is rotatably mounted in the outlet member 2.
  • the closure and control element 4 engages with a lower area 5 in the outlet element 2.
  • the closure and control element 4 is provided with a passage opening 6, which by rotating the closure and control element 4 about its longitudinal axis L with the Inlet opening 3 can be brought to cover.
  • the outlet member 2 and the closure and control member 4 consist of refractory, ceramic material.
  • the closure and control element 4 is designed as a tube 7 with an annular cross section.
  • the closure and control member 4 protrudes above the vessel 1 above.
  • the reason 9 is close to the outlet member 2.
  • the base 9 lies above a step 10 of the outer circumference of the closure and control element 4, with which the latter stands up on an upper edge 11 of the outlet element 2.
  • a drive rod 12 extends, which consists of refractory, ceramic material.
  • the lower, inner end 13 of the drive rod 12 is connected to the base 9 in a tiltable, non-rotatable connection. This is described in more detail below.
  • the upper, outer end 14 of the drive rod 12 is arranged above the closure and control element 4 on a universal joint 15. This sits on a drive shaft 16 which is mounted on a carrier 17.
  • the drive shaft 16 is rotatable by means of a chain drive 18 which can be actuated on the outside of the carrier 17 by means of an actuating lever 19.
  • a depression 20 is formed on the base 9 of the interior 8.
  • the depression 20 forms a cross-sectional profile 21 that deviates from the circular shape.
  • the drive rod 12 has a corresponding cross-sectional profile 22 at least at its lower end 13.
  • These cross-sectional profiles 21, 22 are in engagement with one another and lie against one another at a contact line 23.
  • cruciform cross-sectional profiles 21, 22 are assumed.
  • further designs, for example star-shaped designs, of the cross-sectional profiles 21, 22 are possible, which ensure that the drive rod 12 engages in the closure and control element 4 in a rotationally fixed manner when the longitudinal axis A rotates.
  • the cross-sectional profile 21 of the depression 20 tapers conically in the direction of the longitudinal axis L from the interior 8 below to a bottom 24 of the depression 20.
  • the angle b of the free space 25 is dimensioned such that it is so large that the lower end 13 of the drive rod 12 does not abut against the walls 26 of the recess 20 when the drive rod 12 tilts about the tilt angle a.
  • the free space 25 is dimensioned such that the cross-sectional profiles 21, 22 do not disengage even when tilted by the tilt angle a.
  • the cross-sectional profile 22 of the lower end 13 of the drive rod 12 also tapers. It is thereby achieved that the line of contact 23 engages deeper into the recess 20 than if the lower end 13 were not conical (see FIG. 4 with FIG. 5).
  • the drive rod 12 is provided with a curvature 27 at its lower end 13. This improves the storage in the recess 20 and the tiltability. An improvement in the storage can also be achieved in that a rounding 28 is provided in the region of the contact line 23.
  • the lower end 13 of the drive rod 12 is not tapered.
  • the recess 20 is not tapered. Instead, the lower end 13 of the drive rod 12 is tapered.
  • a base 31 (see FIG. 12) with a cross-shaped extension 31 is formed on the base 9 of the interior 8.
  • the curvatures 27 are arranged on this face.
  • the lower end 13 of the drive rod 12 is here provided with a recess 32, the cross-sectional profile 22 of which corresponds to the cross-sectional profile 21 of the extension 31.
  • the cross-sectional profiles 21, 22 engage in one another in a rotationally fixed manner and touch each other at a contact line 23.
  • the contact line 23 runs in the region of the curvature 27.
  • the depression 32 tapers conically.
  • FIG. 13 shows cross-sectional profiles 21, 22 with a wavy circumferential contour. It can be seen that the cross-sectional profile 22 has fewer corrugations than the cross-sectional profile 21. The cross-sectional profile 22 fits into the cross-sectional profile 21 in different rotational positions.

Abstract

In a shut-off and/or control device for the outlet of a metallurgical vessel, a driving rod (12) extends in an internal space (8) of a refractory ceramic shut-off and/or control element (4). In order to permit tilting and transmission of a rotary motion with as little play as possible in the region of the inner end (13) of the driving rod (12), the internal space (8) in the region of its base (9) and the driving rod (12) at the inner end (13) have cross-sectional profiles (21, 22) which deviate from the circular. They are in engagement with one another and rest against one another at a line (23) of contact. At least one of the cross-sectional profiles (21, 22) tapers, creating a free space (25) above and below the line (23) of contact and allowing the driving rod (12) to be tilted. <IMAGE>

Description

Die Erfindung betrifft eine Verschluß- und/oder Regeleinrichtung für den Ausguß eines metallurgischen Gefäßes, bei der sich in einem Innenraum eines feuerfesten, keramischen Verschluß- und/oder Regelorgans eine Antriebsstange erstreckt, mittels der das Verschluß- und/oder Regelorgan um seine Längsachse drehbar ist und deren äußeres Ende an ein Antriebsaggregat für das Verschluß- und/oder Regelorgan ankoppelbar ist und deren inneres Ende im Bereich des Grundes des Innenraums kippbar gelagert ist.The invention relates to a closure and / or control device for the pouring of a metallurgical vessel, in which a drive rod extends in an interior of a refractory, ceramic closure and / or control member, by means of which the closure and / or control member can be rotated about its longitudinal axis is and the outer end of which can be coupled to a drive unit for the closure and / or regulating member and whose inner end is tiltably mounted in the region of the bottom of the interior.

Eine derartige Verschluß- und Regeleinrichtung ist in der wo 88/04 209 beschrieben. Die Antriebsstange ist mittels eines Kugelkopfes am Grund des Innenraums kippbar gelagert. Dadurch ist ein baulich bedingter Winkelversatz zwischen der Längsachse (Drehachse) des Verschluß- und Regelorgans und der Längsachse (Drehachse) der Antriebsstange ausgleichbar. Mittels des Kugelkopfes lassen sich Drehbewegungen der Antriebsstange nicht auf das Verschluß- und Regelorgan übertragen. Zur Übertragung der Drehbewegung müssen besondere Maßnahmen getroffen werden. Diese sind baulich aufwendig und beeinträchtigen die Kippbarkeit der Antriebsstange im Verschluß- und Regelorgan.Such a closure and control device is described in where 88/04 209. The drive rod is tiltably mounted on the bottom of the interior by means of a ball head. As a result, a structural angular misalignment between the longitudinal axis (axis of rotation) of the closure and control element and the longitudinal axis (axis of rotation) of the drive rod can be compensated. By means of the ball head, rotary movements of the drive rod cannot be transmitted to the locking and regulating member. To transfer the rotary motion you need special measures are taken. These are structurally complex and impair the tiltability of the drive rod in the locking and regulating member.

In der DE 37 43 383 A1 ist eine Verschluß- und Regeleinrichtung beschrieben, bei der das Verschluß- und Regelorgan mittels der Antriebsstange lediglich gehoben oder gesenkt, nicht jedoch gedreht werden kann. Auch hier greift die Antriebsstange mittels eines Kugelkopfes am Grund des Innenraums des Verschluß- und Regelorgans, nahe bei der Auslaßöffnung der Verschluß- und Regeleinrichtung, an dem Verschluß- und Regelorgan an.DE 37 43 383 A1 describes a locking and control device in which the locking and control element can only be raised or lowered by means of the drive rod, but cannot be rotated. Here, too, the drive rod acts on the closure and regulating element by means of a ball head on the bottom of the interior of the closure and regulating member, close to the outlet opening of the closure and regulating device.

In der EP 0 303 475 A1 ist eine Verschluß- und Regeleinrichtung beschrieben, bei der das Antriebsaggregat oben am Verschluß- und Regelorgan selbst angreift.EP 0 303 475 A1 describes a closure and control device in which the drive unit acts on the top of the closure and control element itself.

Aufgabe der Erfindung ist es, eine Verschluß- und/oder Regeleinrichtung der eingangs genannten Art vorzuschlagen, bei der die Gestaltung des inneren Endes der Antriebsstange und des Grundes des Innenraums einerseits die Kippbarkeit und andererseits eine möglichst spielfreie Übertragung der Drehbewegung ermöglicht.The object of the invention is to propose a closure and / or control device of the type mentioned in the introduction, in which the design of the inner end of the drive rod and the bottom of the interior, on the one hand, enables the tiltability and, on the other hand, the least possible play-free transmission of the rotary movement.

Erfindungsgemäß ist obige Aufgabe bei einer Verschluß- und/oder Regeleinrichtung der eingangs genannten Art dadurch gelöst, daß der Innenraum im Bereich seines Grundes und die Antriebsstange am inneren Ende von der Kreisform abweichende Querschnittsprofile quer zur Längsachse bilden, die miteinander im Eingriff stehen und an einer Berührungslinie aneinander anliegen, und daß sich wenigstens eines der Querschnittsprofile in Richtung der Längsachse konisch verjüngt, wodurch oberhalb und unterhalb der Berührungslinie ein Freiraum besteht, der ein Kippen der Antriebsstange zuläßt, ohne daß die Querschnittsprofile außer Eingriff kommen.According to the invention, the above object is achieved in a closure and / or control device of the type mentioned above in that the interior in the region of its base and the drive rod at the inner end form cross-sectional profiles deviating from the circular shape transversely to the longitudinal axis, which are in engagement with one another and on one Line of contact against each other, and that at least one of the Cross-sectional profiles tapered conically in the direction of the longitudinal axis, as a result of which there is a space above and below the line of contact which allows the drive rod to tilt without the cross-sectional profiles coming out of engagement.

Durch die ineinandergreifenden, von der Kreisform abweichenden Querschnittsprofile des Verschluß- und/oder Regelorgans einerseits und der Antriebsstange andererseits ist erreicht, daß ein weitgehend spielfreier Drehantrieb des Verschluß- und/oder Regelorgans durch die Antriebsstange gewährleistet ist. Durch die Konizität wenigstens eines der Querschnittsprofile und den dadurch entstehenden Freiraum ist gewährleistet, daß der spielfreie Antrieb auch dann besteht, wenn die Antriebsstange - gedreht von dem Antriebsaggregat - Kippbewegungen gegenüber dem Verschluß- und/oder Regelorgan ausführt. Solche Kippbewegungen führen dabei nicht zu einem Klemmen des Verschluß- und/oder Regelorgans an einer Lagerstelle. Dadurch, daß die Funktionen: Kippen und Drehantrieb örtlich am Grund des Innenraums des Verschluß- und/oder Regelorgans zusammenfallen, ist erreicht, daß der Abstand zwischen der Angriffsstelle der Antriebsstange für den Drehantrieb und der Lagerstelle des Verschluß- und/oder Regelorgans klein ist, so daß der oberhalb des Grundes des Verschluß- und/oder Regelorgans liegende Bereich des Verschluß- und/oder Regelorgans praktisch keine Drehmomente übertragen muß.The interlocking cross-sectional profiles of the closure and / or control element on the one hand and the drive rod on the other hand, which deviate from the circular shape, ensure that a largely play-free rotary drive of the closure and / or control element is ensured by the drive rod. The taper of at least one of the cross-sectional profiles and the resulting free space ensures that the play-free drive also exists when the drive rod - rotated by the drive unit - performs tilting movements with respect to the closing and / or regulating member. Such tilting movements do not lead to the locking and / or regulating member jamming at a bearing point. Characterized in that the functions: tilting and rotary drive coincide locally at the bottom of the interior of the closure and / or control element, it is achieved that the distance between the point of attack of the drive rod for the rotary drive and the bearing point of the closure and / or control element is small, so that the area of the closure and / or control element lying above the base of the closure and / or control element has to transmit practically no torques.

Das sich konisch verjüngende Querschnittsprofil kann entweder an einer Vertiefung des Grundes des Innenraums oder außen am inneren Ende der Antriebsstange vorgesehen sein. Es ist auch möglich, dieses Querschnittsprofil sowohl an einer Vertiefung des Grundes als auch außen an dem inneren Ende der Antriebsstange vorzusehen.The tapered cross-sectional profile can either be at a recess in the bottom of the interior or be provided on the outside at the inner end of the drive rod. It is also possible to provide this cross-sectional profile both on a depression in the base and on the outside at the inner end of the drive rod.

In Umkehrung der Anordnung ist es möglich, eine das Querschnittsprofil aufweisende Vertiefung am inneren Ende der Antriebsstange anzuordnen, wobei in diese Vertiefung ein am Grund des Innenraums ausgebildeter, das Querschnittsprofil aufweisender Ansatz eingreift. Auch in diesem Fall kann entweder die Vertiefung des inneren Endes der Antriebsstange oder der Ansatz die konische Verjüngung aufweisen. Es ist auch möglich, die konische Verjüngung sowohl an dieser Vertiefung als auch an dem Ansatz vorzusehen.In reverse of the arrangement, it is possible to arrange a recess having the cross-sectional profile at the inner end of the drive rod, a recess having the cross-sectional profile formed at the bottom of the interior engaging in this recess. In this case too, either the depression of the inner end of the drive rod or the shoulder can have the conical taper. It is also possible to provide the conical taper both on this depression and on the shoulder.

In Ausgestaltung der Erfindung kann die konische Verjüngung so ausgestaltet sein, daß sie im Bereich der Berührungslinie der Querschnittsprofile in eine Abrundung oder Wölbung übergeht. Dies verbessert die kippbewegliche Lagerung.In an embodiment of the invention, the conical taper can be designed such that it merges into a rounding or curvature in the region of the line of contact of the cross-sectional profiles. This improves the tiltable storage.

Die von der Kreisform abweichenden Querschnittsprofile können beispielsweise Kreuzform oder Sternform aufweisen. Sie können auch eine wellenförmige Umfangskontur bilden. Damit können je nach dem Einsatzfall baulich einfache Gestaltungen gewählt werden. Günstig ist hierfür auch, daß oberhalb des Grundes des Innenraums und oberhalb des inneren Endes der Antriebsstange keine aneinander angepaßten Querschnittsprofile notwendig sind. So kann beispielsweise das Verschluß- und/oder Regelorgan oberhalb des Grundes als Rohr mit kreisringförmigem Querschnitt gestaltet sein und an der Antriebsstange kann sich der von der Kreisform abweichende Querschnitt bis zu ihrem äußeren Ende fortsetzen. Dies vereinfacht die Herstellung des Verschluß- und/oder Regelorgans und der Antriebsstange beträchtlich. Letzere kann ganz oder teilweise aus keramischem Material, vorzugsweise auf Basis ZrO₂, SiO, Al₂O₃ oder Si₃N₄ bestehen und im Schlickerguß, im Strangguß oder durch isostatisches Pressen hergestellt sein. Hierbei sind sowohl Vollprofile als auch Hohlprofile verwendbar.The cross-sectional profiles deviating from the circular shape can have, for example, a cross shape or a star shape. You can also form a wavy circumferential contour. Depending on the application, structurally simple designs can be selected. It is also favorable for this that above the bottom of the interior and above the inner end of the drive rod, no cross-sectional profiles matched to one another are necessary. For example, the closure and / or control element above the base can be designed as a tube with an annular cross section and the drive rod can be of a circular shape continue deviating cross-section to its outer end. This considerably simplifies the manufacture of the closure and / or control member and the drive rod. The latter can be made entirely or partially of ceramic material, preferably based on ZrO₂, SiO, Al₂O₃ or Si₃N₄, and can be produced in slip casting, in continuous casting or by isostatic pressing. Both full profiles and hollow profiles can be used.

Vorteilhaft ist bei der beschriebenen Verschluß- und/oder Regeleinrichtung auch, daß keine engen Toleranzen zwischen der Antriebsstange und dem Verschluß- und/oder Regelorgan gefordert werden müssen. Denn aufgrund der konischen Verjüngung finden die Querschnittsprofile auch bei größeren Toleranzen ihren drehfesten Eingriff.It is also advantageous with the described closure and / or control device that no tight tolerances between the drive rod and the closure and / or control element have to be required. Because of the conical taper, the cross-sectional profiles are non-rotatably engaged even with larger tolerances.

Günstig ist auch, daß die Montage und die Demontage einfach sind, da die Antriebsstange lediglich in das Verschluß- und/oder Regelorgan eingesteckt werden muß, um die gewünschte kippbare, drehfeste Verbindung am Grund deren Innenraums zu erreichen.It is also favorable that the assembly and disassembly are simple, since the drive rod only has to be inserted into the closure and / or regulating member in order to achieve the desired tiltable, non-rotatable connection at the bottom of the interior thereof.

Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus der folgenden Zeichnungsbeschreibung. In der Zeichnung zeigen:

Figur 1
eine Schnittansicht einer Verschluß- und Regeleinrichtung am Ausguß eines metallurgischen Gefäßes,
Figur 2
eine gegenüber Figur 1 vergrößerte Teilansicht der Verschluß- und Regeleinrichtung,
Figur 3
einen Schnitt längs der Linie III-III nach Figur 2,
Figur 4
einen Schnitt längs der Linie IV-IV nach Figur 3,
Figur 5
eine weitere Ausführung in einer Figur 4 entsprechenden Schnittansicht,
Figur 6
eine weitere Ausführung in einer Figur 4 entsprechenden Schnittansicht,
Figur 7
eine Ansicht der Antriebsstange von unten,
Figur 8
einen Schnitt längs der Linie VIII-VIII nach Figur 7,
Figur 9
eine Ansicht einer weiteren Antriebsstange von unten,
Figur 10
einen Schnitt längs der Linie X-X nach Figur 9,
Figur 11
eine Teilansicht einer weiteren Verschluß- und Regeleinrichtung,
Figur 12
einen Schnitt längs der Linie XII-XII nach Figur 11 ohne Antriebsstange, und
Figur 13
Querschnittsprofile der Antriebsstange und des Verschluß- und Regelorgans mit wellenförmiger Umfangskontur.
Further advantageous embodiments of the invention result from the following description of the drawings. The drawing shows:
Figure 1
2 shows a sectional view of a closure and control device on the spout of a metallurgical vessel,
Figure 2
2 shows a partial view of the closing and regulating device, enlarged compared to FIG. 1,
Figure 3
3 shows a section along the line III-III according to FIG. 2,
Figure 4
4 shows a section along the line IV-IV according to FIG. 3,
Figure 5
4 shows a further embodiment in a sectional view corresponding to FIG. 4,
Figure 6
4 shows a further embodiment in a sectional view corresponding to FIG. 4,
Figure 7
a view of the drive rod from below,
Figure 8
4 shows a section along the line VIII-VIII according to FIG. 7,
Figure 9
a view of another drive rod from below,
Figure 10
4 shows a section along the line XX according to FIG. 9,
Figure 11
a partial view of another closure and control device,
Figure 12
a section along the line XII-XII of Figure 11 without drive rod, and
Figure 13
Cross-sectional profiles of the drive rod and the locking and control element with a wavy circumferential contour.

Ein metallurgisches Gefäß 1 weist ein zylindrisches Auslauforgan 2 (Stator) auf. Dieses ist mit einer seitlichen Einlaßöffnung 3 für die im Gefäß 1 befindliche Schmelze versehen. Im Auslauforgan 2 ist ein Verschluß- und Regelorgan 4 (Rotor) drehbar gelagert. Das Verschluß- und Regelorgan 4 greift dabei mit einem unteren Bereich 5 in das Auslauforgan 2. Im unteren Bereich 5 ist das Verschluß- und Regelorgan 4 mit einer Durchtrittsöffnung 6 versehen, welche durch Drehen des Verschluß- und Regelorgans 4 um seine Längsachse L mit der Einlaßöffnung 3 zur Deckung bringbar ist.A metallurgical vessel 1 has a cylindrical outlet member 2 (stator). This is with a lateral inlet opening 3 for the melt located in the vessel 1 Mistake. In the outlet member 2, a closure and control member 4 (rotor) is rotatably mounted. The closure and control element 4 engages with a lower area 5 in the outlet element 2. In the lower area 5, the closure and control element 4 is provided with a passage opening 6, which by rotating the closure and control element 4 about its longitudinal axis L with the Inlet opening 3 can be brought to cover.

Das Auslauforgan 2 und das Verschluß- und Regelorgan 4 bestehen aus feuerfestem, keramischem Material.The outlet member 2 and the closure and control member 4 consist of refractory, ceramic material.

Oberhalb des unteren Bereichs 5 ist das Verschluß- und Regelorgan 4 als Rohr 7 mit kreisringförmigem Querschnitt gestaltet. Das Verschluß- und Regelorgan 4 ragt oben über das Gefäß 1 hinaus. Oberhalb des unteren Bereichs 5 besteht im Verschluß- und Regelorgan 4 ein oben offenen Innenraum 8. Dieser ist unten an seinem Grund 9 geschlossen. Der Grund 9 steht dem Auslauforgan 2 nahe. Beim Ausführungsbeispiel liegt der Grund 9 oberhalb einer Stufe 10 des Außenumfangs des Verschluß- und Regelorgans 4, mit der dieses auf einem oberen Rand 11 des Auslauforgans 2 aufsteht. Es ist jedoch auch möglich, den Grund 9 tiefer - bis unterhalb der Stufe 10 - zu legen.Above the lower area 5, the closure and control element 4 is designed as a tube 7 with an annular cross section. The closure and control member 4 protrudes above the vessel 1 above. Above the lower area 5 there is an interior space 8 open at the top in the closure and control element 4. The reason 9 is close to the outlet member 2. In the exemplary embodiment, the base 9 lies above a step 10 of the outer circumference of the closure and control element 4, with which the latter stands up on an upper edge 11 of the outlet element 2. However, it is also possible to lower the reason 9 - down to level 10.

Im Innenraum 8 erstreckt sich eine Antriebsstange 12, die aus feuerfestem, keramischen Material besteht. Das untere, innere Ende 13 der Antriebsstange 12 steht mit dem Grund 9 in kippbarer, drehfester Verbindung. Dies wird weiter unten näher beschrieben.In the interior 8, a drive rod 12 extends, which consists of refractory, ceramic material. The lower, inner end 13 of the drive rod 12 is connected to the base 9 in a tiltable, non-rotatable connection. This is described in more detail below.

Das obere, äußere Ende 14 der Antriebsstange 12 ist oberhalb des Verschluß- und Regelorgans 4 an einem Kardangelenk 15 angeordnet. Dieses sitzt an einer Antriebswelle 16, die an einem Träger 17 gelagert ist. Die Antriebswelle 16 ist mittels eines Kettentriebs 18 drehbar, welcher außen am Träger 17 mittels eines Betätigungshebels 19 betätigbar ist.The upper, outer end 14 of the drive rod 12 is arranged above the closure and control element 4 on a universal joint 15. This sits on a drive shaft 16 which is mounted on a carrier 17. The drive shaft 16 is rotatable by means of a chain drive 18 which can be actuated on the outside of the carrier 17 by means of an actuating lever 19.

In der Praxis ist kaum zu erreichen, daß die Längsachse L des Verschluß- und Regelorgans 4 und die Längsachse A der Antriebsstange 12 zusammenfallen. Es ist mit einem Kippwinkel a zwischen den Längsachsen L, A zu rechnen.In practice, it can hardly be achieved that the longitudinal axis L of the closure and control element 4 and the longitudinal axis A of the drive rod 12 coincide. A tilt angle a between the longitudinal axes L, A is to be expected.

Bei den Ausführungsbeispielen nach den Figuren 2 bis 6 ist am Grund 9 des Innenraums 8 eine Vertiefung 20 ausgebildet. Die Vertiefung 20 bildet ein von der Kreisform abweichendes Querschnittsprofil 21. Ein entsprechendes Querschnittsprofil 22 weist die Antriebsstange 12 zumindest an ihrem unteren Ende 13 auf. Diese Querschnittsprofile 21, 22 stehen miteinander in Eingriff und liegen an einer Berührungslinie 23 aneinander an. Bei den Ausführungsbeispielen nach den Figuren 2 bis 12 ist von kreuzförmigen Querschnittsprofilen 21, 22 ausgegangen. Figur 13 zeigt dagegen Querschnittsprofile 21, 22 mit wellenförmiger Umfangskontur. Es sind darüberhinaus weitere Gestaltungen, beispielsweise sternförmige Gestaltungen, der Querschnittsprofile 21, 22 möglich, die einen bei Drehung der Längsachse A drehfesten Eingriff der Antriebsstange 12 in das Verschluß- und Regelorgan 4 gewährleisten.In the exemplary embodiments according to FIGS. 2 to 6, a depression 20 is formed on the base 9 of the interior 8. The depression 20 forms a cross-sectional profile 21 that deviates from the circular shape. The drive rod 12 has a corresponding cross-sectional profile 22 at least at its lower end 13. These cross-sectional profiles 21, 22 are in engagement with one another and lie against one another at a contact line 23. In the exemplary embodiments according to FIGS. 2 to 12, cruciform cross-sectional profiles 21, 22 are assumed. FIG. 13, on the other hand, shows cross-sectional profiles 21, 22 with a wavy circumferential contour. In addition, further designs, for example star-shaped designs, of the cross-sectional profiles 21, 22 are possible, which ensure that the drive rod 12 engages in the closure and control element 4 in a rotationally fixed manner when the longitudinal axis A rotates.

Bei den Ausführungsbeispielen nach den Figuren 2 bis 5 verjüngt sich das Querschnittsprofil 21 der Vertiefung 20 konisch in Richtung der Längsachse L vom Innenraum 8 nach unten zu einem Boden 24 der Vertiefung 20. Oberhalb und unterhalb der Berührungslinie 23 besteht ein Freiraum 25 zwischen der Vertiefung 20 und dem unteren Ende 13 der Antriebsstange 12, der ein Kippen der Antriebsstange 12 um den Winkel a zuläßt. Der Winkel b des Freiraums 25 ist dabei so bemessen, daß er so groß ist, daß das untere Ende 13 der Antriebsstange 12 nicht flächig an Wandungen 26 der Vertiefung 20 anschlägt, wenn die Antriebsstange 12 um den Kippwinkel a kippt. Außerdem ist der Freiraum 25 so bemessen, daß auch beim Kippen um den Kippwinkel a die Querschnittsprofile 21, 22 nicht außer Eingriff gelangen.In the exemplary embodiments according to FIGS. 2 to 5, the cross-sectional profile 21 of the depression 20 tapers conically in the direction of the longitudinal axis L from the interior 8 below to a bottom 24 of the depression 20. Above and below the line of contact 23 there is a free space 25 between the depression 20 and the lower end 13 of the drive rod 12, which allows the drive rod 12 to tilt by the angle a. The angle b of the free space 25 is dimensioned such that it is so large that the lower end 13 of the drive rod 12 does not abut against the walls 26 of the recess 20 when the drive rod 12 tilts about the tilt angle a. In addition, the free space 25 is dimensioned such that the cross-sectional profiles 21, 22 do not disengage even when tilted by the tilt angle a.

Bei den Ausführungsbeispielen nach den Figuren 2 bis 4 verjüngt sich auch das Querschnittsprofil 22 des unteren Endes 13 der Antriebsstange 12 konisch. Dadurch ist erreicht, daß die Berührungslinie 23 tiefer in die Vertiefung 20 greift als dann, wenn das untere Ende 13 nicht konisch gestaltet wäre (vgl. Figur 4 mit Figur 5).In the exemplary embodiments according to FIGS. 2 to 4, the cross-sectional profile 22 of the lower end 13 of the drive rod 12 also tapers. It is thereby achieved that the line of contact 23 engages deeper into the recess 20 than if the lower end 13 were not conical (see FIG. 4 with FIG. 5).

Bei den Ausführungsbeispielen nach den Figuren 4 und 5 ist die Antriebsstange 12 an ihrem unteren Ende 13 mit einer Wölbung 27 versehen. Diese verbessert die Lagerung in der Vertiefung 20 und die Kippbarkeit. Eine Verbesserung der Lagerung läßt sich auch dadurch erreichen, daß im Bereich der Berührungslinie 23 eine Abrundung 28 vorgesehen wird.In the exemplary embodiments according to FIGS. 4 and 5, the drive rod 12 is provided with a curvature 27 at its lower end 13. This improves the storage in the recess 20 and the tiltability. An improvement in the storage can also be achieved in that a rounding 28 is provided in the region of the contact line 23.

Beim Ausführungsbeispiel nach Figur 5 ist das untere Ende 13 der Antriebsstange 12 nicht konisch verjüngt.In the embodiment of Figure 5, the lower end 13 of the drive rod 12 is not tapered.

Beim Ausführungsbeispiel nach Figur 6 ist die Vertiefung 20 nicht konisch verjüngt. Stattdessen ist das untere Ende 13 der Antriebsstange 12 konisch verjüngt.In the embodiment of Figure 6, the recess 20 is not tapered. Instead, the lower end 13 of the drive rod 12 is tapered.

In Figur 7 ist die Antriebsstange 12, die auch bei den Ausführungen nach den Figuren 2 bis 4 und 6 vorgesehen ist, von unten dargestellt. Dabei verjüngen sich alle stirnseitigen Wandungen 29 und alle seitlichen Wandungen 30 des kreuzförmigen Querschnittsprofils 22. Dies ist bei der Ausführung der Antriebsstange 12 nach den Figuren 9 und 10 anders.In Figure 7, the drive rod 12, which is also provided in the embodiments according to Figures 2 to 4 and 6, is shown from below. All the front walls 29 and all the side walls 30 of the cross-shaped cross-sectional profile 22 taper. This is different in the embodiment of the drive rod 12 according to FIGS. 9 and 10.

Bei der Ausführung nach den Figuren 9 und 10 sind nur die stirnseitigen Wandungen 29 des kreuzförmigen Querschnittsprofils 22 konisch gestaltet. Sie verlaufen schräg zur Längsachse A. Die seitlichen Wandungen 30 des Querschnittsprofils 22 dagegen verlaufen nicht schräg. Sie verlaufen parallel zur Längsachse A. Bei dieser Gestaltung des unteren Endes 13 der Antriebsstange 12 werden am Querschnittsprofil 21 der Vertiefung 20 zumindest angrenzend an die seitlichen Wandungen 30 konisch verlaufende Schrägflächen vorgesehen.In the embodiment according to FIGS. 9 and 10, only the end walls 29 of the cross-shaped cross-sectional profile 22 are conical. They run obliquely to the longitudinal axis A. However, the side walls 30 of the cross-sectional profile 22 do not run obliquely. They run parallel to the longitudinal axis A. In this configuration of the lower end 13 of the drive rod 12, conical tapered surfaces are provided on the cross-sectional profile 21 of the depression 20 at least adjacent to the side walls 30.

Beim Ausführungsbeispiel nach den Figuren 11 und 12 ist am Grund 9 des Innenraums 8 ein in Aufsicht (vgl. Figur 12) kreuzförmiger Ansatz 31 ausgebildet. An diesem sind stirnseitig die Wölbungen 27 angeordnet. Das untere Ende 13 der Antriebsstange 12 ist hier mit einer Vertiefung 32 versehen, deren Querschnittsprofil 22 dem Querschnittsprofil 21 des Ansatzes 31 entspricht. Wie beschrieben, greifen die Querschnittsprofile 21, 22 drehfest ineinander und berühren sich an einer Berührungslinie 23. Die Berührungslinie 23 verläuft im Bereich der Wölbung 27. Die Vertiefung 32 verjüngt sich konisch. Dieses Ausführungsbeispiel ist eine Umkehrung des Ausführungsbeispiels nach Figur 2. Auch bei diesem Ausführungsbeispiel lassen sich die oben beschriebenen Teilmerkmale vorsehen.In the exemplary embodiment according to FIGS. 11 and 12, a base 31 (see FIG. 12) with a cross-shaped extension 31 is formed on the base 9 of the interior 8. The curvatures 27 are arranged on this face. The lower end 13 of the drive rod 12 is here provided with a recess 32, the cross-sectional profile 22 of which corresponds to the cross-sectional profile 21 of the extension 31. As described, the cross-sectional profiles 21, 22 engage in one another in a rotationally fixed manner and touch each other at a contact line 23. The contact line 23 runs in the region of the curvature 27. The depression 32 tapers conically. This exemplary embodiment is a reversal of the exemplary embodiment according to FIG. 2. The partial features described above can also be provided in this exemplary embodiment.

Figur 13 zeigt Querschnittsprofile 21, 22 mit wellenförmiger Umfangskontur. Ersichtlich weist das Querschnittsprofil 22 weniger Wellen auf als das Querschnittsprofil 21. Das Querschnittsprofil 22 paßt dabei in verschiedenen Verdrehstellungen in das Querschnittsprofil 21.FIG. 13 shows cross-sectional profiles 21, 22 with a wavy circumferential contour. It can be seen that the cross-sectional profile 22 has fewer corrugations than the cross-sectional profile 21. The cross-sectional profile 22 fits into the cross-sectional profile 21 in different rotational positions.

Claims (8)

  1. Closure and/or control device for the outlet of a metallurgical vessel in which extending in an internal space of a refractory ceramic closure and/or control element there is an actuator rod by means of which the closure and/or control element is rotatable about its longitudinal axis and whose outer end may be coupled to an actuator unit for the closure and/or control element and whose inner end is tiltably mounted in the region of the base of the internal space, characterised in that the internal space (8), in the region of its base (9), and the actuator rod (12), at the inner end (13), define cross-sectional profiles (21, 22) transverse to the longitudinal axis (L) which deviate from the circular and which are in engagement with one another and contact one another at a contact line (23) and that at least one of the cross-sectional profiles (21, 22) tapers conically in the direction of the longitudinal axis (L), whereby there is an empty space (25) above and below the contact line (23) which permits tilting of the actuator rod (12) without the cross-sectional profiles (21, 22) coming out of engagement.
  2. Closure and/or control device as claimed in Claim 1, characterised in that the cross-sectional profiles (21, 22) are of cruciform or star-shaped construction.
  3. Closure and/or control device as claimed in Claim 1 or 2, characterised in that the cross-sectional profiles (21, 22) define a wavy peripheral contour.
  4. Closure and/or control device as claimed in one of the preceding claims, characterised in that the conical taper of the cross-sectional profile (21) is constructed on a recess (20) provided in the base (9) of the internal space (8).
  5. Closure and/or control device as claimed in one of the preceding claims, characterised in that the conical taper of the cross-sectional profile (22) is constructed externally at the inner end (13) of the actuator rod (12).
  6. Closure and/or control device as claimed in one of the preceding Claims 1 to 3, characterised in that the conical taper of the cross-sectional profile (22) is constructed on a recess (32) in the inner end (13) of the actuator rod (12) and a formation (31), which has the cross-sectional profile (21), on the base (9) of the internal space (8) engages in the recess (32).
  7. Closure and/or control device as claimed in one of the preceding Claims 1 to 3 or 6, characterised in that the conical taper is constructed on a formation (31) on the base (9) of the internal space (8) and the formation (31) engages in a recess (32) which is constructed at the inner end (13) of the actuator rod (12) and has the cross-sectional profile (22).
  8. Closure and/or control device as claimed in one of the preceding claims, characterised in that rounded portions (28) or convexities (27) are provided in the region of the contact line (23).
EP91116284A 1990-10-10 1991-09-25 Shut-off and/or control device for the outlet of a metallurgical vessel Expired - Lifetime EP0480239B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4032084A DE4032084C1 (en) 1990-10-10 1990-10-10
DE4032084 1990-10-10

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EP0480239A1 EP0480239A1 (en) 1992-04-15
EP0480239B1 true EP0480239B1 (en) 1994-08-03

Family

ID=6415973

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EP91116284A Expired - Lifetime EP0480239B1 (en) 1990-10-10 1991-09-25 Shut-off and/or control device for the outlet of a metallurgical vessel

Country Status (5)

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EP (1) EP0480239B1 (en)
AT (1) ATE109385T1 (en)
DE (2) DE4032084C1 (en)
DK (1) DK0480239T3 (en)
ES (1) ES2057701T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2692344B1 (en) * 1992-06-11 1998-01-23 Electricite De France DEVICE FOR SEALING A TANK CONTAINING A VITOUS MAGMA IN FUSION, CORRESPONDING TANK AND METHOD FOR DISCHARGING THIS MAGMA.
CH688712A5 (en) 1994-07-22 1998-01-30 Stopinc Ag Vessel closure member on the spout of a molten metal containing.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0480202A1 (en) * 1990-10-10 1992-04-15 Didier-Werke Ag Shut-off and/or control mechanism for the outlet of a vessel containing metal

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1032291A (en) * 1963-01-03 1966-06-08 Morganite Crucible Ltd Improvements in and relating to refractory sleeve sheaths
GB1160309A (en) * 1967-01-09 1969-08-06 Vesuvius Crucible Co Refractory Sleeve for Protecting Stopper Rod in a Vessel for Handling Molten Metal
AU602179B2 (en) * 1986-12-01 1990-10-04 Arva Ag Discharge and flow regulator for metallurgical vessels and casting process
GB8718878D0 (en) * 1987-08-10 1987-09-16 Thor Ceramics Ltd Actuator mechanism
DE3743383A1 (en) * 1987-12-21 1989-07-06 Radex Deutschland Ag Stopper-like device for discharge regulation of the pouring outlet (nozzle) of a vessel receiving metallurgical melt

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0480202A1 (en) * 1990-10-10 1992-04-15 Didier-Werke Ag Shut-off and/or control mechanism for the outlet of a vessel containing metal

Also Published As

Publication number Publication date
DK0480239T3 (en) 1994-11-07
DE4032084C1 (en) 1992-05-27
ATE109385T1 (en) 1994-08-15
EP0480239A1 (en) 1992-04-15
DE59102419D1 (en) 1994-09-08
ES2057701T3 (en) 1994-10-16

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