EP0332868A1 - Rotating or sliding gate valve for an outlet of vessels containing molten metal - Google Patents
Rotating or sliding gate valve for an outlet of vessels containing molten metal Download PDFInfo
- Publication number
- EP0332868A1 EP0332868A1 EP89102654A EP89102654A EP0332868A1 EP 0332868 A1 EP0332868 A1 EP 0332868A1 EP 89102654 A EP89102654 A EP 89102654A EP 89102654 A EP89102654 A EP 89102654A EP 0332868 A1 EP0332868 A1 EP 0332868A1
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- EP
- European Patent Office
- Prior art keywords
- closure part
- closure
- immovable
- movable
- recess
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/14—Charging or discharging liquid or molten material
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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 rotary and / or slide closure for a particularly long spout of a metal-containing vessel, consisting of a refractory, immovable closure part and a relative to it sealingly rotatable and / or displaceable, refractory, movable closure part, the immovable closure part at least has an inlet opening and at least one outlet opening and the immovable closure part is provided with a connecting channel through which the inlet and the outlet opening of the immovable closure part are connected to one another in the open position of the closure. Furthermore, the invention relates to the movable closure part and the immovable closure part of such a rotary and / or slide closure.
- the connecting channel of the movable closure part designed as a rotor is formed by openings which extend radially to the diameter of the rotor. These weaken the strength of the rotor.
- DE-PS 35 40 202 describes a closure for a mold level control. This is unsuitable for an elongated pouring of a metallurgical vessel. By adjusting a pipe in relation to another pipe, the melt outflow can be released or blocked.
- both tubes are provided with openings extending radially to their longitudinal axis.
- Such a twist lock is also described in US Pat. No. 3,651,998. In this case, too, the wall of the rotatable inner tube is broken radially.
- EP 0 078 760 describes a rotary roller lock. This can only be arranged outside a metallurgical vessel. In addition, it has the disadvantage that the two rollers must be pressed together with high force. In addition, there is only one line available for sealing around the circumference of the two rollers.
- the object of the invention is to propose a rotary and / or slide closure of the type mentioned, in which radial or diametrical breakthroughs of the movable closure part are avoided.
- the above object is achieved in the case of a rotary and / or slide closure of the type mentioned at the outset in that the connecting channel is formed by at least one recess extending on the lateral surface of the movable closure part.
- This recess does not represent a diametrically extending opening in the movable closure part. It hardly weakens the strength of the movable closure part. In addition, in the case of maintenance, grinding or re-coating of the recess - after removal of the movable closure part - is easily possible, since the connecting channel formed by the recess is easily accessible on the outside of the movable closure part.
- the movable closure part is pressed firmly into the immovable closure part by the pressure of the melt acting on the recess with its surface opposite the recess. This improves the tightness of the closure.
- a metallurgical vessel has a bottom (1) and walls (2).
- a stator (3) made of refractory ceramic material is installed in the bottom (1) as an immovable closure part. This has a cylindrical inner surface (4) with an axis (5). The length of the stator (3) is much greater than its diameter. It can extend over the entire floor (see. Fig. 1 to 3).
- the outer contour of the stator (3) is also essentially cylindrical if the wall thickness of the stator (3) is as uniform as possible. However, it can also have a different shape, which is suitable for installation in the floor (1).
- An inlet opening (7) which is open towards the inside of the vessel (6) is formed on the stator (3). This extends to edge areas over the entire length of the stator (3). So it is designed as a slot-shaped opening. However, it can also be formed by several partial openings, between which there are webs (8) (see FIG. 2) of the wall of the stator (3).
- a slit-shaped outlet opening (9) is provided on the inner circumference of the stator (3). This extends to the edge areas over the length of the stator (3).
- the outlet opening (9) is offset from the inlet opening (7) on the stator (3) by less than 180 °.
- the outlet opening (9) is extended into a slot-shaped outlet channel (10), which is formed by a proboscis shape (11) of the stator (3).
- the molding (11) can end on the underside (12) of the bottom (1). However, it can also extend beyond the underside (12). It is suitable for strip casting. In particular, it can be designed as an immersion nozzle for a mold arranged under the vessel.
- the free cross section of the inlet opening (7) or the sum of the partial openings is essentially equal to the free cross section of the outlet opening (9).
- the outflow direction (A) of the melt from the outlet channel (10) is parallel to the main inflow direction (E) of the melt into the inlet opening (7).
- the outflow direction (A) can, however, also be set at an acute or obtuse angle to the inflow direction (E) by a corresponding design of the molding (11) or the outlet channel (12) (cf. FIG. 3).
- a rotor (13) made of refractory ceramic material is rotatably mounted in the stator (3) as a movable closure part, the axis of rotation of which is concentric with the axis (5) of the cylindrical inner surface (4) of the stator (3).
- the rotor (13) has a cylindrical outer surface (14) which lies sealingly against the cylindrical inner surface (4).
- the rotor (13) can be a solid body (Fig. 3). However, it can also be hollow inside (Fig. 1), so that it has a substantially the same wall thickness, which can be equal to the wall thickness of the stator (3).
- the rotor (13) is a hollow body (cf. FIG. 1), then a gas can be introduced into the melt through its interior.
- a gas connection is provided on the rotor (13) outside the vessel and gas distribution openings are formed on the circumference of the rotor (13). These can be arranged so that gas only enters the melt in the closed position.
- melt can be present inside the rotor (13), which is connected to the melt in the interior of the vessel (6). This keeps the rotor (13) at melt temperature.
- the rotor (13) has at least one recess (15) on its outer circumference. This extends over the entire length of the inlet opening (7) and the outlet opening (9). In the embodiment according to FIGS. 1 to 3, the recess extends between the inlet opening (7) and the outlet opening (9) in the circumferential direction of the rotor (13). In the embodiment according to FIG. 2, several cutouts (15) are provided on the rotor (13), between which there are webs (16) which correspond to the webs (8) between the inlet openings (7).
- the length of the webs (8 or 16) is practically equal to the length of the inlet openings (7) or the recess (16), so that an axial displacement of the rotor (13) in the stator (3) in the direction (V) (see FIG. 2) the webs (16) of the rotor (13) shut off the inlet openings (7) of the stator (3).
- the recess (15) is designed sickle-shaped in the embodiment of Figure 1. In the open position shown in FIG. 1, it extends between the inlet opening (7) and the outlet opening (9). The recess (15) extends over an angle of less than 180 °. Instead of the sickle shape, the recess (15) can also have a segment shape, for example. (see Figure 3).
- the recess (15) is designed so that its bottom (17) in the open position is aligned with edges (18 and 19) of the inlet opening (7) and the outlet opening (9).
- the stator (3) and the rotor (13) are guided through the bottom (1) or two opposite walls (2) on the vessel to the outside.
- stops (20) are provided to limit the rotary movement of the rotor (13) (cf. FIG. 2).
- drive means for moving the rotor (13) engage on the outside of the rotor (13).
- twist lock The functionality of the twist lock described is approximately as follows:
- the molten metal flows out of the interior of the vessel (6) through the inlet opening (7) and that forming the connecting channel Recess (15) and the outlet opening (9) tangential to the cylindrical inner surface (4) in the outlet channel (10) and get into the following vessel or mold.
- the flowing melt exerts a pressure on the rotor (13), which presses its cylindrical outer surface (14) tightly against the cylindrical inner surface (4) of the stator (3). This improves the sealing effect between the inner surface (4) and the outer surface (14). Due to the slot-like shape of the outlet channel (10), thin slabs can be cast directly.
- the position of the rotor (13) can be changed by the drive means acting on the rotor (13) in such a way that the free flow cross section is narrowed, so that the flow rate of the melt flowing per unit of time can be easily regulated.
- the rotor (13) is turned clockwise or counterclockwise until the inlet opening (7) or the outlet opening (9) are closed by the cylindrical outer surface (14) of the rotor (13). If the rotor (13) is turned counterclockwise to interrupt the melt flow, then the inlet opening (7) is closed before the outlet opening (9) is closed, so that a melt residue located in the recess (15) essentially passes through the outlet opening ( 9) and the outlet channel (10) can flow off. The rotor (13) can then be rotated further so that the outlet opening (9) is also closed by the cylindrical outer surface (14) of the rotor (13).
- the static pressure of the melt of the interior of the vessel (6) acts such that the sealing effect between the cylindrical inner surface (4) and the cylindrical outer surface (14) is supported.
- the drive means of the rotor (13) can be designed such that they also axially the rotor (13) move in the direction of the arrow (V) and in the opposite direction. It is then possible to additionally close or open the rotary lock by axially displacing the rotor (13) in the stator (3). In the open position, the cutouts (15) are aligned with the inlet openings (7). In the closed position, the webs (16) lying between the cutouts (15) cover the inlet openings (7).
- the closure is not provided for an elongated spout, but for a tubular spout.
- the tubular outlet channel (10) extends radially to the axis (5) about which the cylindrical, movable closure part (13) can be rotated in the direction of the arrow (D) and along which the movable closure part (13) in the direction the arrow (V) is movable.
- the recess (15) of the movable closure part (13) extends here in a groove-like manner on its outer circumference in its longitudinal direction.
- the movable closure part (13) which can be actuated on the outside of the vessel, is rotated in the direction of the arrow (D). Residual melt remaining in the recess (15) is in connection with the melt in the interior of the vessel (6) so that it does not freeze.
- the outlet channel (10) empties.
- the closure can also be brought out of the open position shown in FIGS. 4 and 5 by pushing the movable closure part (13) to the left in the direction of the arrow (V). This can be used as an additional or as the only closing or opening function.
- the closure according to Figures 4 and 5 can of course also be used for elongated spouts.
- the outlet channel 10 is slit-shaped, and the recess 15 is dimensioned in the longitudinal direction so that it extends over the entire length of the outlet channel 10 in the open position.
- the invention is not limited to a twist lock. It can also be used with a slide closure in which the opening and / or closing of the inlet and / or outlet openings of the stator is effected exclusively by a displacement of the rotor. It goes without saying that in this case the movable closure part need not necessarily be a rotationally symmetrical body. It can have a triangular or rectangular cross section.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Sliding Valves (AREA)
- Cartons (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Closures For Containers (AREA)
- Furnace Charging Or Discharging (AREA)
- Containers Opened By Tearing Frangible Portions (AREA)
Abstract
Description
Die Erfindung betrifft einen Dreh- und/oder Schieberverschluß für einen insbesondere langgestreckten Ausguß eines Metallschmelze enthaltenden Gefäßes, bestehend aus einem feuerfesten, unbeweglichen Verschlußteil und einem relativ zu ihm dichtend dreh- und/oder verschiebbaren, feuerfesten, beweglichen Verschlußteil, wobei das unbewegliche Verschlußteil mindestens eine Einlauföffnung und mindestens eine Auslauföffnung aufweist und das unbewegliche Verschlußteil mit einem Verbindungskanal versehen ist, durch welchen die Einlauf- und die Auslauföffnung des unbeweglichen Verschlußteils in der Offenstellung des Verschlusses miteinander verbunden sind. Weiterhin betrifft die Erfindung das bewegliche Verschlußteil und das unbewegliche Verschlußteil eines solchen Dreh- und/oder Schieberverschlusses.The invention relates to a rotary and / or slide closure for a particularly long spout of a metal-containing vessel, consisting of a refractory, immovable closure part and a relative to it sealingly rotatable and / or displaceable, refractory, movable closure part, the immovable closure part at least has an inlet opening and at least one outlet opening and the immovable closure part is provided with a connecting channel through which the inlet and the outlet opening of the immovable closure part are connected to one another in the open position of the closure. Furthermore, the invention relates to the movable closure part and the immovable closure part of such a rotary and / or slide closure.
Ein Verschluß der genannten Art ist in der älteren Patentanmeldung P 38 05 071.4 beschrieben. Hierbei ist der Verbindungskanal des als Rotor ausgebildeten beweglichen Verschlußteils von sich radial zum Durchmesser des Rotors erstreckenden Durchbrüchen gebildet. Diese schwächen die Festigkeit des Rotors.A closure of the type mentioned is described in the earlier patent application P 38 05 071.4. Here, the connecting channel of the movable closure part designed as a rotor is formed by openings which extend radially to the diameter of the rotor. These weaken the strength of the rotor.
Darüber hinaus ist eine Nachbearbeitung des Rotors im Wartungsfalle durch Aufweiten eines zugesetzten oder Verengen eines aufgeweiteten Verbindungskanals aufwendig. Im übrigen erscheint ungünstig, daß beim Verdrehen des Rotors in Schließstellung sowohl die Auslauföffnung als auch die Einlauföffnung gleichzeitig abgesperrt werden. Dabei wird ein Schmelzenrest in dem Verbindungskanal eingeschlossen. Dieser Schmelzenrest kann dort einfrieren, und verursacht dadurch die damit verbundenen, bekannten Schwierigkeiten.In addition, post-processing of the rotor in the event of maintenance by widening an added or narrowing a widened connecting channel is complex. Moreover, it appears unfavorable that when the rotor is turned in the closed position, both the outlet opening and the inlet opening are blocked off at the same time. A melt residue is enclosed in the connecting channel. This remnant of melt can freeze there, causing the known difficulties associated therewith.
In der DE-PS 35 40 202 ist ein Verschluß für eine Kokillenfüllstandsregelung beschrieben. Dieser ist für einen langgestreckten Ausguß eines metallurgischen Gefäßes ungeeignet. Durch Verstellen eines Rohres gegenüber einem weiteren Rohr läßt sich der Schmelzenausfluß freigeben oder sperren. Auch hier sind beide Rohre mit sich radial zu ihrer Längsachse erstreckenden Durchbrüchen versehen. Ein solcher Drehverschluß ist auch in der US-PS 3 651 998 beschrieben. Auch bei diesem ist die Wandung des drehbaren, inneren Rohres radial durchbrochen.DE-PS 35 40 202 describes a closure for a mold level control. This is unsuitable for an elongated pouring of a metallurgical vessel. By adjusting a pipe in relation to another pipe, the melt outflow can be released or blocked. Here, too, both tubes are provided with openings extending radially to their longitudinal axis. Such a twist lock is also described in US Pat. No. 3,651,998. In this case, too, the wall of the rotatable inner tube is broken radially.
In der EP 0 078 760 ist ein Walzendrehverschluß beschrieben. Dieser kann nur außerhalb eines metallurgischen Gefäßes angeordnet sein. Darüber hinaus hat er den Nachteil, daß die beiden Walzen mit hoher Kraft aneinandergedrückt werden müssen. Außerdem steht zur Dichtung nur eine Linie am Umfang der beiden Walzen zur Verfügung.EP 0 078 760 describes a rotary roller lock. This can only be arranged outside a metallurgical vessel. In addition, it has the disadvantage that the two rollers must be pressed together with high force. In addition, there is only one line available for sealing around the circumference of the two rollers.
Aufgabe der Erfindung ist es, einen Dreh- und/oder Schieberverschluß der eingangs genannten Art vorzuschlagen, bei dem radiale oder diametrale Durchbrüche des beweglichen Verschlußteils vermieden sind.The object of the invention is to propose a rotary and / or slide closure of the type mentioned, in which radial or diametrical breakthroughs of the movable closure part are avoided.
Erfindungsgemäß ist obige Aufgabe bei einem Dreh- und/oder Schieberverschluß der eingangs genannten Art dadurch gelöst, daß der Verbindungskanal durch wenigstens eine sich an der Mantelfläche des beweglichen Verschlußteils erstreckende Aussparung gebildet ist.According to the invention, the above object is achieved in the case of a rotary and / or slide closure of the type mentioned at the outset in that the connecting channel is formed by at least one recess extending on the lateral surface of the movable closure part.
Diese Aussparung stellt keine diametral verlaufende Durchbrechung des beweglichen Verschlußteils dar. Sie schwächt die Festigkeit des beweglichen Verschlußteils kaum. Darüber hinaus ist im Wartungsfall ein Abschleifen oder Neubeschichten der Aussparung - nach dem Ausbauen des beweglichen Verschlußteils - leicht möglich, da der von der Aussparung gebildete Verbindungskanal an der Außenseite des beweglichen Verschlußteils leicht zugänglich ist.This recess does not represent a diametrically extending opening in the movable closure part. It hardly weakens the strength of the movable closure part. In addition, in the case of maintenance, grinding or re-coating of the recess - after removal of the movable closure part - is easily possible, since the connecting channel formed by the recess is easily accessible on the outside of the movable closure part.
Günstig ist auch, daß das bewegliche Verschlußteil durch den auf die Aussparung wirkenden Druck der Schmelze mit seiner der Aussparung gegenüberliegenden Fläche fest in das unbewegliche Verschlußteil gedrückt wird. Dies verbessert die Dichtigkeit des Verschlusses.It is also favorable that the movable closure part is pressed firmly into the immovable closure part by the pressure of the melt acting on the recess with its surface opposite the recess. This improves the tightness of the closure.
Ein weiterer Vorteil kann darin gesehen werden, daß beim Betätigen des beweglichen Verschlußteils in die Schließstellung des Verschlusses wenigstens zunächst die Einlauföffnung oder die Auslauföffnung geschlossen wird. Dadurch ist vermieden, daß sich im Innern des beweglichen Verschlußteils ein Schmelzenrest anstaut, welcher einfrieren könnte.Another advantage can be seen in the fact that when the movable closure part is actuated into the closed position of the closure, the inlet opening or the outlet opening is closed at least first. This prevents a melt residue that could freeze build up inside the movable closure part.
Vorteilhafte Ausgestaltungen des Verschlusses und die wesentlichen Merkmale des beweglichen Verschlußteils und des unbeweglichen Verschlußteils ergeben sich aus den Unteransprüchen und der folgenden Beschreibung.Advantageous configurations of the closure and the essential features of the movable closure part and the immovable closure part result from the subclaims and the following description.
In der Zeichnung zeigen:
Figur 1 eine Schnittansicht eines Verschlusses für einen langgestreckten Ausguß längs der Linie I-I nach Fig. 2,Figur 2 eine teilweise geschnittene Aufsicht des Verschlusses im Boden eines metallurgischen Gefäßes,Figur 3 eine weitere Ausführung eines Verschlusses für einen langgestreckten Ausguß,Figur 4 einen Verschluß für einen rohrförmigen Ausguß undFigur 5 einen Schnitt längs der Linie V-V nachFigur 4.
- FIG. 1 shows a sectional view of a closure for an elongated spout along the line II in FIG. 2,
- FIG. 2 shows a partially sectioned top view of the closure in the bottom of a metallurgical vessel,
- 3 shows a further embodiment of a closure for an elongated spout,
- Figure 4 shows a closure for a tubular spout and
- 5 shows a section along the line VV of Figure 4.
Ein metallurgisches Gefäß weist einen Boden (1) und Wände (2) auf. In den Boden (1) ist ein Stator (3) aus feuerfestem keramischem Material als unbewegliches Verschlußteil eingebaut. Dieser weist eine zylindrische Innenfläche (4) mit einer Achse (5) auf. Die Länge des Stators (3) ist wesentlich größer als dessen Durchmesser. Sie kann sich über den gesamten Boden erstrecken (vgl. Fig. 1 bis 3).A metallurgical vessel has a bottom (1) and walls (2). A stator (3) made of refractory ceramic material is installed in the bottom (1) as an immovable closure part. This has a cylindrical inner surface (4) with an axis (5). The length of the stator (3) is much greater than its diameter. It can extend over the entire floor (see. Fig. 1 to 3).
Die Außenkontur des Stators (3) ist ebenfalls im wesentlichen zylinderförmig, wenn es auf eine möglichst gleichmäßige Wandstärke des Stators (3) ankommt. Sie kann jedoch auch eine andere Gestalt aufweisen, die zu einem Einbauen in den Boden (1) geeeignet ist.The outer contour of the stator (3) is also essentially cylindrical if the wall thickness of the stator (3) is as uniform as possible. However, it can also have a different shape, which is suitable for installation in the floor (1).
Am Stator (3) ist eine zum Gefäßinnern (6) hin offene Einlauföffnung (7) ausgebildet. Diese erstreckt sich bis auf Randbereiche über die gesamte Länge des Stators (3). Sie ist also als schlitzförmiger Durchbruch gestaltet. Sie kann jedoch auch von mehreren Teilöffnungen gebildet sein, zwischen denen Stege (8) (vgl. Figur 2) der Wandung des Stators (3) bestehen.An inlet opening (7) which is open towards the inside of the vessel (6) is formed on the stator (3). This extends to edge areas over the entire length of the stator (3). So it is designed as a slot-shaped opening. However, it can also be formed by several partial openings, between which there are webs (8) (see FIG. 2) of the wall of the stator (3).
Am Stator (3) ist an dessen Innenumfang eine schlitzförmige Auslauföffnung (9) vorgesehen. Diese erstreckt sich bis auf Randbereiche über die Länge des Stators (3). Die Auslauföffnung (9) ist gegenüber der Einlauföffnung (7) am Stator (3) um weniger als 180° versetzt. Die Auslauföffnung (9) ist in einen schlitzförmigen Auslaufkanal (10) verlängert, welcher von einer rüsselförmigen Anformung (11) des Stators (3)gebildet ist. Die Anformung (11) kann an der Unterseite (12) des Bodens (1) enden. Sie kann jedoch auch die Unterseite (12) überragen. Sie eignet sich für das Bandgießen. Insbesondere kann sie als Eintauchausguß für eine unter dem Gefäß angeordnete Kokille gestaltet sein. Der freie Querschnitt der Einlauföffnung (7) bzw. der Summe der Teilöffnungen ist im wesentlichen gleich dem freien Querschnitt der Auslauföffnung (9).A slit-shaped outlet opening (9) is provided on the inner circumference of the stator (3). This extends to the edge areas over the length of the stator (3). The outlet opening (9) is offset from the inlet opening (7) on the stator (3) by less than 180 °. The outlet opening (9) is extended into a slot-shaped outlet channel (10), which is formed by a proboscis shape (11) of the stator (3). The molding (11) can end on the underside (12) of the bottom (1). However, it can also extend beyond the underside (12). It is suitable for strip casting. In particular, it can be designed as an immersion nozzle for a mold arranged under the vessel. The free cross section of the inlet opening (7) or the sum of the partial openings is essentially equal to the free cross section of the outlet opening (9).
Bei der Ausführug nach Figur 1 liegt die Ausströmrichtung (A) der Schmelze aus dem Auslaufkanal (10) parallel zur Haupt-Einströmrichutng (E) der Schmelze in die Einlauföffnung (7). Die Ausströmrichtung (A) kann jedoch auch durch eine entsprechende Gestaltung der Anformung (11) bzw. des Auslaufkanals (12) in einen spitzen oder stumpfen Winkel zur Einströmrichtung (E) gelegt sein (vgl. Figur 3).In the embodiment according to FIG. 1, the outflow direction (A) of the melt from the outlet channel (10) is parallel to the main inflow direction (E) of the melt into the inlet opening (7). The outflow direction (A) can, however, also be set at an acute or obtuse angle to the inflow direction (E) by a corresponding design of the molding (11) or the outlet channel (12) (cf. FIG. 3).
In dem Stator (3) ist ein Rotor (13) aus feuerfestem keramischem Material als bewegliches Verschlußteil drehbar gelagert, wobei dessen Drehachse konzentrisch zur Achse (5) der zylindrischen Innenfläche (4) des Stators (3) liegt. Der Rotor (13) weist eine zylindrische Mantelfläche (14) auf, die dichtend an der zylindrischen Innenfläche (4) anliegt. Der Rotor (13) kann ein Vollkörper sein (Fig. 3). Er kann jedoch auch in seinem Innern hohl sein (Fig. 1), so daß er eine im wesentlichen gleiche Wandstärke aufweist, die gleich der Wandstärke des Stators (3) sein kann.A rotor (13) made of refractory ceramic material is rotatably mounted in the stator (3) as a movable closure part, the axis of rotation of which is concentric with the axis (5) of the cylindrical inner surface (4) of the stator (3). The rotor (13) has a cylindrical outer surface (14) which lies sealingly against the cylindrical inner surface (4). The rotor (13) can be a solid body (Fig. 3). However, it can also be hollow inside (Fig. 1), so that it has a substantially the same wall thickness, which can be equal to the wall thickness of the stator (3).
Ist der Rotor (13) ein Hohlkörper (vgl. Fig. 1), dann kann durch sein Inneres ein Gas in die Schmelze eingeleitet werden. Es ist hierfür am Rotor (13) außerhalb des Gefäßes ein Gasanschluß vorgesehen und am Umfang des Rotors (13) sind Gasverteilöffnungen ausgebildet. Diese können so angeordnet sein, daß Gas nur in der Schließstellung in die Schmelze eintritt.If the rotor (13) is a hollow body (cf. FIG. 1), then a gas can be introduced into the melt through its interior. For this purpose, a gas connection is provided on the rotor (13) outside the vessel and gas distribution openings are formed on the circumference of the rotor (13). These can be arranged so that gas only enters the melt in the closed position.
Ist der Rotor (13) ein Hohlkörper, dann kann im Innern des Rotors (13) Schmelze anstehen, die mit der Schmelze im Gefäßinnern (6) in Verbindung steht. Dadurch wird der Rotor (13) auf Schmelzentemperatur gehalten.If the rotor (13) is a hollow body, then melt can be present inside the rotor (13), which is connected to the melt in the interior of the vessel (6). This keeps the rotor (13) at melt temperature.
Der Rotor (13) weist an seinem Außenumfang wenigstens eine Aussparung (15) auf. Diese erstreckt sich über die gesamte Länge der Einlauföffnung (7) und der Auslauföffnung (9). Bei der Ausführung nach den Figuren 1 bis 3 erstreckt sich die Aussparung zwischen der Einlauföffnung (7) und der Auslauföffnung (9) in Umfangsrichtung des Rotors (13). Bei der Ausführung nach Figur 2 sind am Rotor (13) mehrere Aussparungen (15) vorgesehen, zwischen denen Stege (16) bestehen, die den Stegen (8) zwischen den Einlauföffnungen (7) entsprechen.The rotor (13) has at least one recess (15) on its outer circumference. This extends over the entire length of the inlet opening (7) and the outlet opening (9). In the embodiment according to FIGS. 1 to 3, the recess extends between the inlet opening (7) and the outlet opening (9) in the circumferential direction of the rotor (13). In the embodiment according to FIG. 2, several cutouts (15) are provided on the rotor (13), between which there are webs (16) which correspond to the webs (8) between the inlet openings (7).
Die Länge der Stege (8 bzw. 16) ist dabei praktisch gleich der Länge der Einlauföffnungen (7) bzw. der Aussparung (16), so daß durch eine axiale Verschiebung des Rotors (13) im Stator (3) in Richtung (V) (vgl. Figur 2) die Stege (16) des Rotors (13) die Einlauföffnungen (7) des Stators (3) absperren.The length of the webs (8 or 16) is practically equal to the length of the inlet openings (7) or the recess (16), so that an axial displacement of the rotor (13) in the stator (3) in the direction (V) (see FIG. 2) the webs (16) of the rotor (13) shut off the inlet openings (7) of the stator (3).
Die Aussparung (15) ist beim Ausführungsbeispiel nach Figur 1 sichelförmig gestaltet. Sie erstreckt sich in der in Figur 1 dargestellten Offenstellung zwischen der Einlauföffnung (7) und der Auslauföffnung (9). Die Aussparung (15) erstreckt sich über einen Winkel von weniger als 180°. Anstelle der Sichelform kann die Aussparung (15) beispielsweise auch eine Segmentform aufweisen. (vgl. Figur 3). Die Aussparung (15) ist so gestaltet, daß ihr Boden (17) in der Offenstellung mit Kanten (18 bzw. 19) der Einlauföffnung (7) bzw. der Auslauföffnung (9) fluchtet.The recess (15) is designed sickle-shaped in the embodiment of Figure 1. In the open position shown in FIG. 1, it extends between the inlet opening (7) and the outlet opening (9). The recess (15) extends over an angle of less than 180 °. Instead of the sickle shape, the recess (15) can also have a segment shape, for example. (see Figure 3). The recess (15) is designed so that its bottom (17) in the open position is aligned with edges (18 and 19) of the inlet opening (7) and the outlet opening (9).
Der Stator (3) und der Rotor (13) sind durch den Boden (1) bzw. zwei gegenüberliegende Wände (2) am Gefäß nach außen geführt. Außen am Stator (3) und am Rotor (13) sind Anschläge (20) zur Begrenzung der Drehbewegung des Rotors (13) vorgesehen (vgl. Fig. 2). Außerdem greifen außen am Rotor (13) Antriebsmittel zur Bewegung des Rotors (13) ein.The stator (3) and the rotor (13) are guided through the bottom (1) or two opposite walls (2) on the vessel to the outside. On the outside of the stator (3) and on the rotor (13), stops (20) are provided to limit the rotary movement of the rotor (13) (cf. FIG. 2). In addition, drive means for moving the rotor (13) engage on the outside of the rotor (13).
Die Funktionsweise des beschriebenen Drehverschlusses ist etwa folgende:The functionality of the twist lock described is approximately as follows:
Steht der Rotor (13) in der in Figur 1 dargestellten Stellung, dann strömt die Metallschmelze aus dem Gefäßinnern (6) durch die Einlauföffnung (7) und die den Verbindungskanal bildende Aussparung (15), sowie die Auslaßöffnung (9) tangential zur zylindrischen Innenfläche (4) in den Auslaufkanal (10) und gelangt in das folgende Gefäß bzw. die folgende Kokille. Die fließende Schmelze übt auf den Rotor (13) einen Druck aus, der dessen zylindrische Mantelfläche (14) dicht gegen die zylindrische Innenfläche (4) des Stators (3) preßt. Dies verbessert die Dichtwirkung zwischen der Innenfläche (4) und der Mantelfläche (14). Aufgrund der Schlitzförmigen Gestalt des Auslaufkanals (10) lassen sich Dünnbrammen direkt gießen.If the rotor (13) is in the position shown in FIG. 1, the molten metal flows out of the interior of the vessel (6) through the inlet opening (7) and that forming the connecting channel Recess (15) and the outlet opening (9) tangential to the cylindrical inner surface (4) in the outlet channel (10) and get into the following vessel or mold. The flowing melt exerts a pressure on the rotor (13), which presses its cylindrical outer surface (14) tightly against the cylindrical inner surface (4) of the stator (3). This improves the sealing effect between the inner surface (4) and the outer surface (14). Due to the slot-like shape of the outlet channel (10), thin slabs can be cast directly.
Durch die am Rotor (13) angreifenden Antriebsmittel läßt sich die Stellung des Rotors (13) so verändern, daß sich der freie Strömungsquerschnitt verengt, so daß die pro Zeiteinheit fließende Strömungsmenge der Schmelze einfach regelbar ist.The position of the rotor (13) can be changed by the drive means acting on the rotor (13) in such a way that the free flow cross section is narrowed, so that the flow rate of the melt flowing per unit of time can be easily regulated.
Soll der Drehverschluß geschlossen werden, dann wird der Rotor (13) im Uhrzeigersinn oder entgegen des Uhrzeigersinns gedreht, bis die Einlauföffnung (7) oder die Auslauföffnung (9) von der zylindrischen Mantelfläche (14) des Rotors (13) geschlossen sind. Wird der Rotor (13) zum Unterbrechen des Schmelzenflusses entgegen des Uhrzeigersinns gedreht, dann ist die Einlauföffnung (7) abgeschlossen, bevor die Auslauföffnung (9) abgeschlossen ist, so daß ein in der Aussparung (15) befindlicher Schmelzenrest im wesentlichen durch die Auslauföffnung (9) und den Auslaufkanal (10) abfließen kann. Danach läßt sich der Rotor (13) so weiterdrehen, daß auch die Auslauföffnung (9) von der zylindrischen Mantelfläche (14) des Rotors (13) verschlossen ist.If the rotary lock is to be closed, the rotor (13) is turned clockwise or counterclockwise until the inlet opening (7) or the outlet opening (9) are closed by the cylindrical outer surface (14) of the rotor (13). If the rotor (13) is turned counterclockwise to interrupt the melt flow, then the inlet opening (7) is closed before the outlet opening (9) is closed, so that a melt residue located in the recess (15) essentially passes through the outlet opening ( 9) and the outlet channel (10) can flow off. The rotor (13) can then be rotated further so that the outlet opening (9) is also closed by the cylindrical outer surface (14) of the rotor (13).
Wird der Rotor (13) zum Unterbrechen des Flusses der Metallschmelze im Uhrzeigersinn gedreht, dann wird zunächst die Auslauföffnung (9) verschlossen. Die in der Aussparung (15) befindliche Restschmelze bleibt in Verbindung mit der Schmelze im Gefäßinnern (6).If the rotor (13) is turned clockwise to interrupt the flow of the molten metal, then the outlet opening (9) is first closed. The residual melt in the recess (15) remains in connection with the melt in the interior of the vessel (6).
In beiden Fällen wirkt der statische Druck der Schmelze des Gefäßinnern (6) so, daß die Dichtwirkung zwischen der zylindrischen Innenfläche (4) und der zylindrischen Mantelfläche (14) unterstützt ist.In both cases, the static pressure of the melt of the interior of the vessel (6) acts such that the sealing effect between the cylindrical inner surface (4) and the cylindrical outer surface (14) is supported.
Sind zwischen den Teilbereichen der Einlauföffnungen (7) die Stege (8) und zwischen den Aussparungen (15) die Stege (16) vorgesehen, dann können die Antriebsmittel des Rotors (13) so ausgelegt sein, daß sie den Rotor (13) auch axial in Richtung des Pfeiles (V) und in Gegenrichtung bewegen. Es ist dann möglich, den Drehverschluß zusätzlich durch eine axiale Verschiebung des Rotors (13) im Stator (3) zu schließen oder zu öffnen. In der Offenstellung fluchten die Aussparungen (15) mit den Einlauföffnungen (7). In der Schließstellung decken die zwischen den Aussparungen (15) liegenden Stege (16) die Einlauföffnungen (7) ab.If the webs (8) are provided between the partial areas of the inlet openings (7) and the webs (16) are provided between the cutouts (15), then the drive means of the rotor (13) can be designed such that they also axially the rotor (13) move in the direction of the arrow (V) and in the opposite direction. It is then possible to additionally close or open the rotary lock by axially displacing the rotor (13) in the stator (3). In the open position, the cutouts (15) are aligned with the inlet openings (7). In the closed position, the webs (16) lying between the cutouts (15) cover the inlet openings (7).
Beim Ausführungsbeispiel nach den Figuren 4 und 5 ist der Verschluß nicht für einen langgestreckten Ausguß, sondern für einen rohrförmigen Ausguß vorgesehen. Am unbeweglichen Verschlußteil (3) erstreckt sich der rohrförmige Auslaufkanal (10) radial zur Achse (5), um die das zylindrische, bewegliche Verschlußteil (13) in Richtung des Pfeiles (D) drehbar und längs der das bewegliche Verschlußteil (13) in Richtung des Pfeiles (V) verschieblich ist.In the exemplary embodiment according to FIGS. 4 and 5, the closure is not provided for an elongated spout, but for a tubular spout. On the immovable closure part (3) the tubular outlet channel (10) extends radially to the axis (5) about which the cylindrical, movable closure part (13) can be rotated in the direction of the arrow (D) and along which the movable closure part (13) in the direction the arrow (V) is movable.
Die Aussparung (15) des beweglichen verschlußteils (13) erstreckt sich hier nutförmig an dessen Außenumfang in dessen Längsrichtung.The recess (15) of the movable closure part (13) extends here in a groove-like manner on its outer circumference in its longitudinal direction.
In der in den Figuren 4 und 5 dargestellten Offenstellung strömt Metallschmelze am Boden horizontal in die Aussparung (15) ein und wird in dieser in den Auslaufkanal (10) umgelenkt.In the open position shown in FIGS. 4 and 5, molten metal flows horizontally into the recess (15) at the bottom and is deflected therein into the outlet channel (10).
Zum Schließen des Verschlusses wird das bewegliche Verschlußteil (13), das außen am Gefäß betätigbar ist, in Richtung des Pfeiles (D) gedreht. In der Aussparung (15) verbleibende Restschmelze steht weiter mit der Schmelze im Gefäßinnern (6) in Verbindung, so daß sie nicht einfriert. Der Auslaufkanal (10) entleert sich.To close the closure, the movable closure part (13), which can be actuated on the outside of the vessel, is rotated in the direction of the arrow (D). Residual melt remaining in the recess (15) is in connection with the melt in the interior of the vessel (6) so that it does not freeze. The outlet channel (10) empties.
Aus der in den Figuren 4 und 5 dargestellten Offenstellung kann der Verschluß auch dadurch gebracht werden, daß das bewegliche Verschlußteil (13) in Richtung des Pfeiles (V) nach links geschoben wird. Dies kann als zusätzliche, oder auch als einzige Schließ- bzw. öffnungsfunktion eingesetzt werden.The closure can also be brought out of the open position shown in FIGS. 4 and 5 by pushing the movable closure part (13) to the left in the direction of the arrow (V). This can be used as an additional or as the only closing or opening function.
Der Verschluß nach den Figuren 4 und 5 ist selbstverständlich auch für langgestreckte Ausgüsse verwendbar. In diesem Fall ist der Auslaufkanal 10 schlitzförmig, und die Aussparung 15 ist in Längsrichtung so bemessen, daß sie sich in Offenstellung über die ganze Länge des Auslaufkanals 10 erstreckt.The closure according to Figures 4 and 5 can of course also be used for elongated spouts. In this case, the
Die Erfindung ist nicht auf einen Drehverschluß beschränkt. Sie ist auch bei einem Schieberverschluß anwendbar, bei dem das Auf- und Zuschließen der Einlauf- und/oder Auslauföffnungen des Stators ausschließlich durch eine Verschiebung des Rotors bewirkt wird. Es versteht sich von selbst, daß in diesem Fall das bewegliche Verschlußteil nicht unbedingt ein rotationssymmetrischer Körper sein muß. Es kann dreieckförmigen oder rechteckigen Querschnitt aufweisen.The invention is not limited to a twist lock. It can also be used with a slide closure in which the opening and / or closing of the inlet and / or outlet openings of the stator is effected exclusively by a displacement of the rotor. It goes without saying that in this case the movable closure part need not necessarily be a rotationally symmetrical body. It can have a triangular or rectangular cross section.
Claims (26)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89102654T ATE77279T1 (en) | 1988-03-18 | 1989-02-16 | ROTARY AND/OR SLIDE CLOSURE FOR A SPOUT OF A VESSEL CONTAINING METAL METAL. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3809071 | 1988-03-18 | ||
DE3809071A DE3809071A1 (en) | 1988-03-18 | 1988-03-18 | TURNING AND / OR SLIDING CLOSURE FOR A SPOUT OF A METAL MELT CONTAINING METAL, AND LOCKING PARTS FOR SUCH A LOCKING |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0332868A1 true EP0332868A1 (en) | 1989-09-20 |
EP0332868B1 EP0332868B1 (en) | 1992-06-17 |
Family
ID=6350058
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89102654A Expired - Lifetime EP0332868B1 (en) | 1988-03-18 | 1989-02-16 | Rotating or sliding gate valve for an outlet of vessels containing molten metal |
Country Status (13)
Country | Link |
---|---|
US (1) | US4932570A (en) |
EP (1) | EP0332868B1 (en) |
JP (1) | JPH0210094A (en) |
KR (1) | KR890014933A (en) |
CN (1) | CN1028973C (en) |
AT (1) | ATE77279T1 (en) |
BR (1) | BR8901196A (en) |
CA (1) | CA1338004C (en) |
DE (2) | DE3809071A1 (en) |
ES (1) | ES2034423T3 (en) |
GR (1) | GR3005695T3 (en) |
SU (1) | SU1695823A3 (en) |
ZA (1) | ZA891697B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990011854A1 (en) * | 1989-03-31 | 1990-10-18 | Stopinc Aktiengesellschaft | A sliding closure at the outlet of a vessel, especially one containing molten metal, and suitable fireproof closure components |
EP0436813A2 (en) * | 1990-01-11 | 1991-07-17 | Didier-Werke Ag | Shut-off and/or control device |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5156752A (en) * | 1990-01-11 | 1992-10-20 | Didier-Werke Ag | Elongated stator and rotor members with elongated slots |
CA2100555A1 (en) * | 1991-01-18 | 1992-07-19 | Roger Wallis | Vessel outlet |
DE4319966A1 (en) * | 1993-06-17 | 1994-12-22 | Didier Werke Ag | Immersion spout |
US5916471A (en) * | 1998-11-10 | 1999-06-29 | North American Refractories Co. | Rotary socket taphole assembly |
US8459049B2 (en) | 2010-08-30 | 2013-06-11 | General Electric Company | Method and apparatus for controlling refrigerant flow |
US8424318B2 (en) * | 2010-08-30 | 2013-04-23 | General Electric Company | Method and apparatus for refrigerant flow rate control |
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DE1916234A1 (en) * | 1968-04-09 | 1969-10-23 | Electroverre Romont Sa | Method and apparatus for removing liquid glass from an oven |
GB1177262A (en) * | 1966-04-20 | 1970-01-07 | John Nadrich | Bottom Pour Metallurgical Ladle |
DE2203987A1 (en) * | 1972-01-28 | 1973-08-02 | Diener Berthold | DEVICE FOR FILLING THE HOLLOW FRAME LEGS OF INSULATING GLASS PANES WITH GRANULATE |
US4453654A (en) * | 1982-06-16 | 1984-06-12 | Electric Power Research Institute, Inc. | Continuous casting nozzle with transverse reinforcement structure |
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FR485821A (en) * | 1917-06-15 | 1918-02-08 | Winkler | Improvements to metal remelting furnaces for letterpress |
GB183241A (en) * | 1921-04-19 | 1922-07-19 | William Rowlands | Improvements in or relating to teeming devices for ladles adapted to hold molten steel |
DE1583704A1 (en) * | 1967-07-06 | 1970-08-20 | Suedwestfalen Ag Stahlwerke | Pouring ladle closure |
US3651998A (en) * | 1970-09-23 | 1972-03-28 | Metallurg Exoproducts Corp | Nozzle for a pouring ladle |
JPS5367627A (en) * | 1976-11-29 | 1978-06-16 | Toshiba Machine Co Ltd | Pump main body of hot chamber type die casting machine |
LU83734A1 (en) * | 1981-11-04 | 1983-09-01 | Arbed | CASTING DEVICE WITH VARIABLE OPENING |
SU1072995A1 (en) * | 1982-08-25 | 1984-02-15 | Алтайский Ордена Ленина Тракторный Завод Им.М.И.Калинина | Wicket taper refractory gate |
DE3540202C1 (en) * | 1985-11-13 | 1986-11-27 | Brown, Boveri & Cie Ag, 6800 Mannheim | Inflow regulating element for mould level control in a continuous casting plant |
DE3805071A1 (en) * | 1988-02-18 | 1989-08-31 | Didier Werke Ag | CLOSING AND CONTROL DEVICE FOR THE POURING OF LIQUID METAL MELT |
-
1988
- 1988-03-18 DE DE3809071A patent/DE3809071A1/en active Granted
-
1989
- 1989-02-16 DE DE8989102654T patent/DE58901655D1/en not_active Expired - Fee Related
- 1989-02-16 AT AT89102654T patent/ATE77279T1/en active
- 1989-02-16 EP EP89102654A patent/EP0332868B1/en not_active Expired - Lifetime
- 1989-02-16 ES ES198989102654T patent/ES2034423T3/en not_active Expired - Lifetime
- 1989-03-06 ZA ZA891697A patent/ZA891697B/en unknown
- 1989-03-10 SU SU894613612A patent/SU1695823A3/en active
- 1989-03-15 KR KR1019890003170A patent/KR890014933A/en not_active Application Discontinuation
- 1989-03-15 JP JP1061096A patent/JPH0210094A/en active Pending
- 1989-03-16 CN CN89101439A patent/CN1028973C/en not_active Expired - Fee Related
- 1989-03-16 BR BR898901196A patent/BR8901196A/en not_active Application Discontinuation
- 1989-03-17 CA CA000594021A patent/CA1338004C/en not_active Expired - Fee Related
- 1989-03-20 US US07/326,031 patent/US4932570A/en not_active Expired - Fee Related
-
1992
- 1992-09-14 GR GR920402027T patent/GR3005695T3/el unknown
Patent Citations (4)
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GB1177262A (en) * | 1966-04-20 | 1970-01-07 | John Nadrich | Bottom Pour Metallurgical Ladle |
DE1916234A1 (en) * | 1968-04-09 | 1969-10-23 | Electroverre Romont Sa | Method and apparatus for removing liquid glass from an oven |
DE2203987A1 (en) * | 1972-01-28 | 1973-08-02 | Diener Berthold | DEVICE FOR FILLING THE HOLLOW FRAME LEGS OF INSULATING GLASS PANES WITH GRANULATE |
US4453654A (en) * | 1982-06-16 | 1984-06-12 | Electric Power Research Institute, Inc. | Continuous casting nozzle with transverse reinforcement structure |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990011854A1 (en) * | 1989-03-31 | 1990-10-18 | Stopinc Aktiengesellschaft | A sliding closure at the outlet of a vessel, especially one containing molten metal, and suitable fireproof closure components |
US5154875A (en) * | 1989-03-31 | 1992-10-13 | Stopinc Aktiengesellschaft | Slide gate nozzle or shut-off control valve for metallurgical vessel and refractory shut-off parts thereof |
EP0436813A2 (en) * | 1990-01-11 | 1991-07-17 | Didier-Werke Ag | Shut-off and/or control device |
EP0436813A3 (en) * | 1990-01-11 | 1992-04-01 | Didier-Werke Ag | Shut-off and/or control device |
Also Published As
Publication number | Publication date |
---|---|
ES2034423T3 (en) | 1993-04-01 |
JPH0210094A (en) | 1990-01-12 |
CN1035968A (en) | 1989-10-04 |
CA1338004C (en) | 1996-01-30 |
EP0332868B1 (en) | 1992-06-17 |
ZA891697B (en) | 1989-11-29 |
DE3809071A1 (en) | 1989-09-28 |
BR8901196A (en) | 1989-10-31 |
CN1028973C (en) | 1995-06-21 |
KR890014933A (en) | 1989-10-25 |
ATE77279T1 (en) | 1992-07-15 |
SU1695823A3 (en) | 1991-11-30 |
DE58901655D1 (en) | 1992-07-23 |
US4932570A (en) | 1990-06-12 |
DE3809071C2 (en) | 1991-07-04 |
GR3005695T3 (en) | 1993-06-07 |
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