EP0794025A2 - Shut-off and/or control device, in particular for a molten metal stream - Google Patents

Shut-off and/or control device, in particular for a molten metal stream Download PDF

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Publication number
EP0794025A2
EP0794025A2 EP97101859A EP97101859A EP0794025A2 EP 0794025 A2 EP0794025 A2 EP 0794025A2 EP 97101859 A EP97101859 A EP 97101859A EP 97101859 A EP97101859 A EP 97101859A EP 0794025 A2 EP0794025 A2 EP 0794025A2
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EP
European Patent Office
Prior art keywords
spring
opening
flow
component
outlet opening
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.)
Withdrawn
Application number
EP97101859A
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German (de)
French (fr)
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EP0794025A3 (en
Inventor
Hans Rothfuss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Didier Werke AG
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Didier Werke AG
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Filing date
Publication date
Application filed by Didier Werke AG filed Critical Didier Werke AG
Publication of EP0794025A2 publication Critical patent/EP0794025A2/en
Publication of EP0794025A3 publication Critical patent/EP0794025A3/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1509—Tapping equipment

Definitions

  • the invention relates to a closure and / or control device, in particular for a metallic melt stream, with a closure member between an inlet opening and an outlet opening.
  • Known locking and / or regulating devices are controlled mechanically via hydraulic or electric motor drives, the drives having to generate force vectors directed against one another for opening or closing. The closing and opening forces are each transferred to ceramic parts.
  • closure and / or control devices are, for example, slide closures or stopper closures.
  • the closure member is formed by sealing surfaces of a movable component.
  • the object of the invention is to propose a simplified closure and / or control device.
  • a closure and / or control device is characterized in that the closure member is formed by a helical spring, that the spring in the state in which its turns are close to one another blocks the flow from the inlet opening to the outlet opening, that the spring in that State in which their turns are spaced apart, the flow from the inlet opening to the outlet opening is more or less released, the melt flow passing through the distances between the turns, and that the spring can be acted upon by a control element which can be moved against the spring force.
  • the result of the spring is that the control member only has to act on the closure member, ie the spring, in one direction.
  • the drive of the control element and the connection to the closure and / or regulating device can thereby be designed in a simple manner.
  • the locking and / or regulating device is brought into the other state by the spring force of the spring itself.
  • closure and / or control device there are various options for choosing the direction of flow.
  • the closure and / or control device can be structurally adapted to a wide variety of applications.
  • the spring is preferably a compression spring. In its relaxed state, it is in the open position. If it is pressurized by the control element against the spring force, then it goes into the locked position. However, the spring could also be a tension spring. The situation is reversed. In the relaxed state, the spring is then in the locked position. By pulling by means of the control member, it can be brought into the open position.
  • the closure and / or control device has an inlet opening (1) and an outlet opening (2), between which a helical compression spring (3) is arranged as the closure member.
  • the spring axis is labeled A.
  • the interior (4) of the spring which is concentric with the spring axis (A), adjoins the outlet opening (2) on one axial side thereof. The other side is closed with a cover (5). If the compression spring (3) is relaxed, then melt flows from the inlet opening (1) through the windings (3 '), which are spaced apart in the relaxed state, into the interior (4) and from there axially into the outlet opening (2).
  • the closure member is therefore open (see Fig. 1a).
  • the compression spring (3) consists of a refractory ceramic material and has a rectangular, preferably square cross-sectional profile of its turns (3 ') to improve the sealing effect.
  • the component (6) is not necessarily the stationary component.
  • the cover (5) could also be stationary in the case of a displaceable component (6).
  • the relative movement between the components (5, 6) is decisive for the opening or closing.
  • the closure and / or control device is shown on the bottom (7) of a metallurgical vessel.
  • the stationary building (6) sits in the floor (7).
  • the lowest turn of the compression spring (3) is supported in the component (6).
  • Your top turn is centered in the cover (5).
  • a pressure pipe is assigned to the cover (5) as a control element (8).
  • Figure 2 shows the open position. If the component presses on the cover (5) from above in the direction of arrow (P), the windings (3 ') of the compression spring (3) are compressed against the spring force, the free flow cross-section from the inside of the vessel to the outlet opening (2) being reduced . This enables sensitive control of the melt outflow, the control member (8) only having to act in the direction of the arrow (P).
  • the cover (5) on which the uppermost turn of the compression spring (3) is supported, is arranged on the fixed component (6) fastened in the bottom (7) of the metallurgical vessel.
  • the lowermost turn is supported on a structure (9) which is displaceable in the direction of the axis (A) in the fixed component (6) and which forms the exit opening (2) and on which the control element (8) acts from below.
  • FIG. 3 shows the opening position in which melt from the interior of the vessel enters through the inlet opening (1) and through the spaced turns (3 ') into the interior (4) of the compression spring (3) and in this through the outlet opening (2) drains away.
  • the compression spring (3) is more or less compressed to regulate the melt flow. If the turns (3 ') are pressed close together, the melt flow is interrupted.
  • a cover (5) is neither provided on the stationary component (6) nor on the displaceable component (9). Accordingly, regardless of the degree of compression of the compression spring (3), a flow (a) concentric to the spring axis (A) flows continuously from the inlet opening (1) through the interior (4) of the compression spring (3) into a channel formed by the tubular component (9) (10). Between the stationary component (6) and the displaceable component (9) there is an annular channel (11) having the exit opening (2).
  • FIG. 4a shows the closed position in which there is no inflow into the outlet opening (2) and thus the ring channel (11) through the windings of the compression spring (3). No partial flow is thus branched off from the flow (a) existing from the inlet opening (1) through the interior (4) into the channel (10).
  • FIG. 4b The open position is shown in FIG. 4b.
  • the cover (5) is provided on the stationary component (6).
  • the inlet opening (1) is formed by the tubular, displaceable component (9).
  • the outlet opening (2) merges into the ring channel (11) existing between the components (6, 9).
  • FIG. 5a The closed position is shown in FIG. 5a.
  • Figure 5b shows the open position in which a flow (c) from the inlet opening (1) through the compression spring (3) into the ring channel (11).
  • the cover (5) is provided on the displaceable component (9).
  • the entrance opening (1) is designed on the stationary component (6).
  • the outlet opening (2) merges into the ring channel (11).
  • FIG. 6a shows the closed position in which there is no flow from the inlet opening (1) into the ring channel (11).
  • FIG. 6b shows the opening position in which the flow (d) results.
  • the cover (5) is provided on the stationary component (6), on which side entry openings (1) are formed.
  • the outlet opening (2) is formed by the channel (10) of the displaceable component (9).
  • FIG. 7a shows the closed position, in which the compressed compression spring (3) prevents flow from the inlet openings (1) into the channel (10).
  • FIG. 7b shows the opening position in which there is a flow (e) from the inlet openings (1) into the channel (10) of the displaceable component (9) through the compression spring (3).
  • the cover (5) is formed on the displaceable component (9).
  • the inlet opening (1) and the outlet opening (2) are designed on the stationary component (6).
  • Figure 8 shows the opening position in which a flow (f) from the inlet opening (1), which is concentric to the spring axis (A), through the compression spring (3) to the outlet openings (2). If the displaceable component (9) is pushed upwards against the force of the compression spring (3), this flow (f) is more or less or completely interrupted.
  • the described displaceable component (9) can also be the stationary component, in which case the stationary component (6) is the displaceable component. It is also possible to exchange the inlet opening for the outlet opening or to reverse the direction of flow.
  • the inlet opening (1) and the outlet opening (2) are formed by a channel (12) of a stationary component (6).
  • the compression spring (3) is arranged in the channel (12), the axis (A) of which extends transversely to the longitudinal direction of the channel (12).
  • the compression spring (3) can be compressed by means of the control element (8) which forms the cover (5).
  • FIG. 9 shows the opening position in which a flow (g) takes place across the compression spring (3) from the inlet opening (1) to the outlet opening (2). If the control element (8) is pressurized in the direction of the arrow (P), then the distances between the turns (3 ') decrease, as a result of which the flow (g) is throttled. If the turns (3 ') are pressed tightly against one another, then the flow is interrupted.
  • the embodiment of Figure 10 is similar to that of Figure 9.
  • the stationary component (6) is tubular and has the inlet opening (1) and the outlet opening (2).
  • Two displaceable components (9) are mounted in it, between which the compression spring (3) is located.
  • Figure 10a shows the open position in which the compression spring (3) is relaxed so that there is a radial flow (h) through it from the inlet opening (1) to the outlet opening (2).
  • Figure 10b shows the closed position.
  • the displaceable components (9) are compressed by pressure in the direction of the arrows (P) such that the compression spring (3) interrupts a flow from the inlet opening (1) to the outlet opening (2).
  • the relatively stationary component (6) is formed by a tubular immersion nozzle. This protrudes into the molten metal (M) of a mold (13).
  • the mold powder slag level is labeled S.
  • the displaceable component (9) floats in the melt (M) as a floating body. This forms the cover (5) and lateral outlet openings (2) and is guided on the immersion spout (6).
  • the compression spring (3) is arranged between the cover (5) and the lower edge of the immersion spout (6).
  • the displaceable component (9) is pushed more or less upwards by the buoyancy force (P) against the force of the compression spring (3), which results in a corresponding regulation of the bath level (S).
  • the compression spring (3) is largely relaxed, so that the windings (3 ') are spaced accordingly far and thus a correspondingly large volume flow from the inlet opening (1) of the immersion spout (6) through the compression spring (3) flows through to the outlet openings (2).
  • the displaceable structure (9) floats correspondingly high, as a result of which the compression spring (3) is compressed, so that its windings (3 ') only allow a smaller melt flow to pass through.
  • the displaceable component (9) floated up so far that the compression spring (3) is completely compressed, so that the melt flow from the immersion spout (6) into the molten metal (M) is interrupted.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Abstract

The closure device for molten metal comprises a ceramic spring (3) which in a non-compressed position allows the free passage of metal through a channel (2) but when compressed under the action of a moveable ram (8) stops the free flow.

Description

Die Erfindung betrifft eine Verschluß- und/oder Regelvorrichtung, insbesondere für einen metallischen Schmelzenstrom, mit einem Verschlußorgan zwischen einer Eingangsöffnung und einer Ausgangsöffnung.The invention relates to a closure and / or control device, in particular for a metallic melt stream, with a closure member between an inlet opening and an outlet opening.

Bekannte Verschluß- und/oder Regelvorrichtungen werden mechanisch über Hydraulik- oder Elektromotorantriebe gesteuert, wobei die Antriebe zum Öffnen bzw. Schließen gegeneinander gerichtete Kraftvektoren erzeugen müssen. Die Schließ- und Öffnungskräfte werden je für sich auf Keramikteile übertragen. Solche Verschluß- und/oder Regelvorrichtungen sind beispielsweise Schieberverschlüsse oder Stopfenverschlüsse.Known locking and / or regulating devices are controlled mechanically via hydraulic or electric motor drives, the drives having to generate force vectors directed against one another for opening or closing. The closing and opening forces are each transferred to ceramic parts. Such closure and / or control devices are, for example, slide closures or stopper closures.

Bei den bekannten Verschluß- und/oder Regelvorrichtungen ist das Verschlußorgan von Dichtflächen eines beweglichen Bauteils gebildet.In the known closure and / or control devices, the closure member is formed by sealing surfaces of a movable component.

Die Verwendung einer Feder aus keramischem Material bei einer Filterkerze ist in der US 4 735 638 beschrieben. Diese Feder soll lediglich die Temperaturdehnungen auffangen.The use of a spring made of ceramic material in a filter candle is described in US 4,735,638. This spring is only intended to absorb the temperature expansions.

Aufgabe der Erfindung ist es, eine vereinfachte Verschluß- und/oder Regelvorrichtung vorzuschlagen.The object of the invention is to propose a simplified closure and / or control device.

Eine erfindungsgemäße Verschluß- und/oder Regelvorrichtung ist dadurch gekennzeichnet, daß das Verschlußorgan von einer wendelförmigen Feder gebildet ist, daß die Feder in demjenigen Zustand, in dem ihre Windungen dicht aneinanderliegen, die Strömung von der Eingangsöffnung zur Ausgangsöffnung sperrt, daß die Feder in demjenigen Zustand, in dem ihre Windungen beabstandet sind, die Strömung von der Eingangsöffnung zur Ausgangsöffnung mehr oder weniger freigibt, wobei der Schmelzenstrom durch die Abstände zwischen den Windungen tritt, und daß die Feder mittels eines gegen die Federkraft beweglichen Steuerglieds beaufschlagbar ist.A closure and / or control device according to the invention is characterized in that the closure member is formed by a helical spring, that the spring in the state in which its turns are close to one another blocks the flow from the inlet opening to the outlet opening, that the spring in that State in which their turns are spaced apart, the flow from the inlet opening to the outlet opening is more or less released, the melt flow passing through the distances between the turns, and that the spring can be acted upon by a control element which can be moved against the spring force.

Durch die Feder ist erreicht, daß das Steuerglied das Verschlußorgan, also die Feder, nur in eine Richtung beaufschlagen muß. Der Antrieb des Steuerglieds und die Verbindung mit der Verschluß- und/oder Regelvorrichtung kann dadurch einfach gestaltet werden. In den anderen Zustand wird die Verschluß- und/oder Regelvorrichtung durch die Federkraft der Feder selbst gebracht.The result of the spring is that the control member only has to act on the closure member, ie the spring, in one direction. The drive of the control element and the connection to the closure and / or regulating device can thereby be designed in a simple manner. The locking and / or regulating device is brought into the other state by the spring force of the spring itself.

Da die Feder selbst das Verschlußorgan bildet, erübrigen sich zusätzliche Verschlußteile.Since the spring itself forms the closure member, there is no need for additional closure parts.

Bei der Verschluß- und/oder Regelvorrichtung sind verschiedene Möglichkeiten gegeben, die Flußrichtung zu wählen. Die Verschluß- und/oder Regelvorrichtung läßt sich baulich an die verschiedensten Einsatzfälle anpassen.In the closure and / or control device, there are various options for choosing the direction of flow. The closure and / or control device can be structurally adapted to a wide variety of applications.

Vorzugsweise ist die Feder eine Druckfeder. In ihrem entspannten Zustand steht sie in der Öffnungsstellung. Ist sie vom Steuerglied gegen die Federkraft druckbeaufschlagt, dann geht sie in die Sperrstellung. Die Feder könnte jedoch auch eine Zugfeder sein. Die Verhältnisse liegen dann umgekehrt. Im entspannten Zustand steht die Feder dann in Sperrstellung. Durch Ziehen mittels des Steuerglieds ist sie in die Öffnungsstellung bringbar.The spring is preferably a compression spring. In its relaxed state, it is in the open position. If it is pressurized by the control element against the spring force, then it goes into the locked position. However, the spring could also be a tension spring. The situation is reversed. In the relaxed state, the spring is then in the locked position. By pulling by means of the control member, it can be brought into the open position.

Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen und der folgenden Beschreibung von Ausführungsbeispielen. In der Zeichnung zeigen:

Figur 1a
das Prinzip der Feder als Verschlußorgan in Öffnungsstellung,
Figur 1b
in Schließstellung,
Figur 2
eine Verschluß- und/oder Regelvorrichtung an einem metallurgischen Gefäß in Öffnungsstellung, wobei die Steuerung von oben stattfindet,
Figur 3
ein Ausführungsbeispiel, bei dem die Steuerung von unten stattfindet,
Figur 4a und 4b bis Figur 7a bzw. 7b
weitere Ausführungsbeispiele in Schließstellung bzw. Öffnungsstellung,
Figur 8
ein weiteres Ausführungsbeispiel in Öffnungsstellung,
Figur 9
ein Ausführungsbeispiel, bei dem die Federachse quer zur Strömungsrichtung liegt,
Figur 10a bzw. 10b
ein weiteres Ausführungsbeispiel entsprechend Figur 9 in Öffnungsstellung bzw. Schließstellung,
Figur 11
ein Ausführungsbeispiel, bei dem das die Feder beaufschlagende Steuerglied ein Schwimmkörper ist.
Advantageous refinements of the invention result from the subclaims and the following description of exemplary embodiments. The drawing shows:
Figure 1a
the principle of the spring as a closure element in the open position,
Figure 1b
in the closed position,
Figure 2
a closure and / or regulating device on a metallurgical vessel in the open position, the control taking place from above,
Figure 3
an embodiment in which the control takes place from below,
4a and 4b to 7a and 7b
further exemplary embodiments in the closed position or open position,
Figure 8
another embodiment in the open position,
Figure 9
an embodiment in which the spring axis is transverse to the direction of flow,
Figure 10a and 10b
another embodiment according to Figure 9 in the open position or closed position,
Figure 11
an embodiment in which the control element acting on the spring is a floating body.

Die Verschluß- und/oder Regelvorrichtung weist eine Eingangsöffnung (1) und eine Ausgangsöffnung (2) auf, zwischen denen als Verschlußorgan eine wendelförmige Druckfeder (3) angeordnet ist. Die Federachse ist mit A bezeichnet. Der zur Federachse (A) konzentrische Innenraum (4) der Feder schließt an seiner einen axialen Seite an die Ausgangsöffnung (2) an. Die andere Seite ist mit einer Abdeckung (5) verschlossen. Ist die Druckfeder (3) entspannt, dann fließt Schmelze von der Eingangsöffnung (1) durch die im Entspannungszustand beabstandeten Windungen (3') in den Innenraum (4) und von dort axial in die Ausgangsöffnung (2). Das Verschlußorgan ist also offen (vgl. Fig.1a).The closure and / or control device has an inlet opening (1) and an outlet opening (2), between which a helical compression spring (3) is arranged as the closure member. The spring axis is labeled A. The interior (4) of the spring, which is concentric with the spring axis (A), adjoins the outlet opening (2) on one axial side thereof. The other side is closed with a cover (5). If the compression spring (3) is relaxed, then melt flows from the inlet opening (1) through the windings (3 '), which are spaced apart in the relaxed state, into the interior (4) and from there axially into the outlet opening (2). The closure member is therefore open (see Fig. 1a).

Um das Verschlußorgan zu schließen, wird die sich an einem ortsfesten Baute (6) abstützende Feder (3) mittels der Abdeckung (5) so zusammengedrückt, daß alle Windungen (3') dicht aneinander anlegen. In diesem Zustand ist der Schmelzendurchgang von der Eingangsöffnung (1) zur Ausgangsöffnung (2) gesperrt (vgl. Fig.1b).In order to close the closure member, the spring (3), which is supported on a stationary structure (6), is pressed together by means of the cover (5) in such a way that all the turns (3 ') lie close together. In this state, the melt passage from the inlet opening (1) to the outlet opening (2) is blocked (see Fig. 1b).

Wird die Abdeckung (5) entlastet, dann geht die Feder (3) unter der Wirkung der Federkraft von selbst in die in Figur 1a gezeigte Öffnungsstellung zurück.If the cover (5) is relieved, the spring (3) automatically returns to the open position shown in FIG. 1a under the action of the spring force.

Die Druckfeder (3) besteht aus einem feuerfesten keramischen Material und weist zur Verbesserung der Dichtwirkung ein rechteckiges, vorzugsweise quadratisches Querschnittsprofil ihrer Windungen (3') auf.The compression spring (3) consists of a refractory ceramic material and has a rectangular, preferably square cross-sectional profile of its turns (3 ') to improve the sealing effect.

Aus den Figuren 1a und 1b ist ersichtlich, daß nicht notwendigerweise das Bauteil (6) das ortsfeste Bauteil ist. Auch die Abdeckung (5) könnte bei verschieblichem Bauteil (6) ortsfest sein. Letztlich ist die Relativbewegung zwischen den Bauteilen (5, 6) für das Öffnen bzw. Schließen ausschlaggebend.It can be seen from FIGS. 1a and 1b that the component (6) is not necessarily the stationary component. The cover (5) could also be stationary in the case of a displaceable component (6). Ultimately, the relative movement between the components (5, 6) is decisive for the opening or closing.

Bei der Ausführung nach Figur 2 ist die Verschluß- und/oder Regelvorrichtung am Boden (7) eines metallurgischen Gefäßes dargestellt. Das ortsfeste Baute (6) sitzt im Boden (7). Im Bauteil (6) stützt sich die unterste Windung der Druckfeder (3) ab. Ihre oberste Windung ist in der Abdeckung (5) zentriert. Der Abdeckung (5) ist als Steuerglied (8) ein Druckrohr zugeordnet. Die Figur 2 zeigt die Öffnungsstellung. Drückt das Bauteil von oben in Richtung des Pfeiles (P) auf die Abdeckung (5), dann werden die Windungen (3') der Druckfeder (3) gegen die Federkraft zusammengedrückt, wobei sich der freie Strömungsquerschnitt vom Gefäßinnern zur Ausgangsöffnung (2) verkleinert. Es ist damit eine feinfühlige Steuerung des Schmelzenausflusses möglich, wobei das Steuerglied (8) immer nur in Richtung des Pfeiles (P) beaufschlagend wirken muß.In the embodiment according to FIG. 2, the closure and / or control device is shown on the bottom (7) of a metallurgical vessel. The stationary building (6) sits in the floor (7). The lowest turn of the compression spring (3) is supported in the component (6). Your top turn is centered in the cover (5). A pressure pipe is assigned to the cover (5) as a control element (8). Figure 2 shows the open position. If the component presses on the cover (5) from above in the direction of arrow (P), the windings (3 ') of the compression spring (3) are compressed against the spring force, the free flow cross-section from the inside of the vessel to the outlet opening (2) being reduced . This enables sensitive control of the melt outflow, the control member (8) only having to act in the direction of the arrow (P).

Sind die Windungen (3') der Druckfeder (3) so zusammengedrückt, daß sie dicht aneinander anliegen, dann ist der Schmelzendurchfluß vom Gefäßinnern zur Ausgangsöffnung (2) hin unterbrochen. Wird der Druck (P) dann wieder reduziert, dann strömt wieder Schmelze aus, weil sich die Windungen (3') unter der Federkraft beabstanden.If the windings (3 ') of the compression spring (3) are pressed together so that they lie close together, then the melt flow from the interior of the vessel to the outlet opening (2) is interrupted. If the pressure (P) is then reduced again, the melt flows out again because the turns (3 ') are spaced apart under the spring force.

Beim Ausführungsbeispiel nach Figur 3 ist die Abdeckung (5), an der sich die oberste Windung der Druckfeder (3) abstützt, am im Boden (7) des metallurgischen Gefäßes befestigten ortsfesten Bauteil (6) angeordnet. Die unterste Windung stützt sich an einem in Richtung der Achse (A) im ortsfesten Bauteil (6) verschieblichen Baute (9) ab, das die Ausgangsöffnung (2) bildet und an dem das Steuerglied (8) von unten angreift.In the embodiment according to FIG. 3, the cover (5), on which the uppermost turn of the compression spring (3) is supported, is arranged on the fixed component (6) fastened in the bottom (7) of the metallurgical vessel. The lowermost turn is supported on a structure (9) which is displaceable in the direction of the axis (A) in the fixed component (6) and which forms the exit opening (2) and on which the control element (8) acts from below.

In Figur 3 ist die Öffnungsstellung gezeigt, in der Schmelze aus dem Gefäßinnern durch die Eingangsöffnung (1) und durch die beabstandeten Windungen (3') in den Innenraum (4) der Druckfeder (3) eintritt und in diesem durch die Ausgangsöffnung (2) abfließt.FIG. 3 shows the opening position in which melt from the interior of the vessel enters through the inlet opening (1) and through the spaced turns (3 ') into the interior (4) of the compression spring (3) and in this through the outlet opening (2) drains away.

Wird das Steuerglied (8) in Richtung des Pfeiles (P) beaufschlagt, dann wird die Druckfeder (3) zur Regelung des Schmelzenflusses mehr oder weniger zusammengedrückt. Werden die Windungen (3') dicht aneinander gedrückt, dann ist der Schmelzenfluß unterbrochen.If the control element (8) is acted on in the direction of the arrow (P), then the compression spring (3) is more or less compressed to regulate the melt flow. If the turns (3 ') are pressed close together, the melt flow is interrupted.

Beim Ausführungsbeispiel nach Figur 4 ist eine Abdeckung (5) weder am ortsfesten Bauteil (6) noch am verschieblichen Bauteil (9) vorgesehen. Dementsprechend fließt unabhängig vom Zusammendrückungsgrad der Druckfeder (3) ständig eine zur Federachse (A) konzentrische Strömung (a) von der Eingangsöffnung (1) durch den Innenraum (4) der Druckfeder (3) hindurch in einen vom rohrförmigen Bauteil (9) gebildeten Kanal (10). Zwischen dem ortsfesten Bauteil (6) und dem verschieblichen Bauteil (9) besteht ein die Ausgangsöffnung (2) aufweisender Ringkanal (11).In the embodiment according to FIG. 4, a cover (5) is neither provided on the stationary component (6) nor on the displaceable component (9). Accordingly, regardless of the degree of compression of the compression spring (3), a flow (a) concentric to the spring axis (A) flows continuously from the inlet opening (1) through the interior (4) of the compression spring (3) into a channel formed by the tubular component (9) (10). Between the stationary component (6) and the displaceable component (9) there is an annular channel (11) having the exit opening (2).

In Figur 4a ist die Schließstellung gezeigt, in der durch die Windungen der Druckfeder (3) hindurch keine Einströmung in die Ausgangsöffnung (2) und damit den Ringkanal (11) stattfindet. Es wird also von dem von der Eingangsöffnung (1) durch den Innenraum (4) in den Kanal (10) bestehenden Strömung (a) kein Teilstrom abgezweigt.FIG. 4a shows the closed position in which there is no inflow into the outlet opening (2) and thus the ring channel (11) through the windings of the compression spring (3). No partial flow is thus branched off from the flow (a) existing from the inlet opening (1) through the interior (4) into the channel (10).

In Figur 4b ist die Öffnungsstellung gezeigt. Es fließt dabei ein von der Strömung (a) abgezweigter Teilstrom (b) durch die beabstandeten Windungen (3') hindurch in den Ringkanal (11).The open position is shown in FIG. 4b. A partial flow (b) branched off from the flow (a) flows through the spaced turns (3 ') into the annular channel (11).

Beim Ausführungsbeispiel nach Figur 5 ist die Abdeckung (5) am ortsfesten Bauteil (6) vorgesehen. Die Eingangsöffnung (1) ist vom rohrförmigen, verschieblichen Bauteil (9) gebildet. Die Ausgangsöffnung (2) geht in den zwischen den Bauteilen (6, 9) bestehenden Ringkanal (11) über.In the exemplary embodiment according to FIG. 5, the cover (5) is provided on the stationary component (6). The inlet opening (1) is formed by the tubular, displaceable component (9). The outlet opening (2) merges into the ring channel (11) existing between the components (6, 9).

In Figur 5a ist die Schließstellung gezeigt. Figur 5b zeigt die Öffnungsstellung, in der eine Strömung (c) von der Eingangsöffnung (1) durch die Druckfeder (3) hindurch in den Ringkanal (11) erfolgt.The closed position is shown in FIG. 5a. Figure 5b shows the open position in which a flow (c) from the inlet opening (1) through the compression spring (3) into the ring channel (11).

Beim Ausführungsbeispiel nach Figur 6 ist die Abdeckung (5) am verschieblichen Bauteil (9) vorgesehen. Die Eingangsöffnung (1) ist am ortsfesten Bauteil (6) gestaltet. Die Ausgangsöffnung (2) geht in den Ringkanal (11) über.In the exemplary embodiment according to FIG. 6, the cover (5) is provided on the displaceable component (9). The entrance opening (1) is designed on the stationary component (6). The outlet opening (2) merges into the ring channel (11).

Figur 6a zeigt die Schließstellung, in der keine Strömung von der Eingangsöffnung (1) in den Ringkanal (11) stattfindet. Figur 6b zeigt entsprechend die Öffnungsstellung, in der sich die Strömung (d) ergibt.Figure 6a shows the closed position in which there is no flow from the inlet opening (1) into the ring channel (11). FIG. 6b shows the opening position in which the flow (d) results.

Beim Ausführungsbeispiel nach Figur 7 ist die Abdeckung (5) am ortsfesten Bauteil (6) vorgesehen, an dem seitlich Eingangsöffnungen (1) ausgebildet sind. Die Ausgangsöffnung (2) ist vom Kanal (10) des verschieblichen Bauteils (9) gebildet.In the exemplary embodiment according to FIG. 7, the cover (5) is provided on the stationary component (6), on which side entry openings (1) are formed. The outlet opening (2) is formed by the channel (10) of the displaceable component (9).

Figur 7a zeigt die Schließstellung, in der die zusammengedrückte Druckfeder (3) eine Strömung von den Eingangsöffnungen (1) in den Kanal (10) verhindert. Figur 7b zeigt die Öffnungsstellung, in der durch die Druckfeder (3) hindurch eine Strömung (e) von den Eingangsöffnungen (1) in den Kanal (10) des verschieblichen Bauteils (9) erfolgt.FIG. 7a shows the closed position, in which the compressed compression spring (3) prevents flow from the inlet openings (1) into the channel (10). FIG. 7b shows the opening position in which there is a flow (e) from the inlet openings (1) into the channel (10) of the displaceable component (9) through the compression spring (3).

Bei der Ausführung nach Figur 8 ist die Abdeckung (5) am verschieblichen Bauteil (9) ausgebildet. Die Eingangsöffnung (1) und die Ausgangsöffnung (2) sind am ortsfesten Bauteil (6) gestaltet. Figur 8 zeigt die Öffnungsstellung, in der eine Strömung (f) von der Eingangsöffnung (1), die konzentrisch zur Federachse (A) liegt, durch die Druckfeder (3) hindurch zu den Ausgangsöffnungen (2) erfolgt. Wird das verschiebliche Bauteil (9) gegen die Kraft der Druckfeder (3) nach oben geschoben, dann wird diese Strömung(f) mehr oder weniger oder ganz unterbrochen.In the embodiment according to FIG. 8, the cover (5) is formed on the displaceable component (9). The inlet opening (1) and the outlet opening (2) are designed on the stationary component (6). Figure 8 shows the opening position in which a flow (f) from the inlet opening (1), which is concentric to the spring axis (A), through the compression spring (3) to the outlet openings (2). If the displaceable component (9) is pushed upwards against the force of the compression spring (3), this flow (f) is more or less or completely interrupted.

Bei den Ausführungsbeispielen nach den Figuren 4 bis 8 kann das beschriebene verschiebliche Bauteil (9) auch das ortsfeste Bauteil sein, wobei dann das ortsfeste Bauteil (6) das verschiebliche Bauteil ist. Es ist auch möglich, die Eingangsöffnung gegen die Ausgangsöffnung auszutauschen bzw. die Strömungsrichtung umzukehren.In the exemplary embodiments according to FIGS. 4 to 8, the described displaceable component (9) can also be the stationary component, in which case the stationary component (6) is the displaceable component. It is also possible to exchange the inlet opening for the outlet opening or to reverse the direction of flow.

Beim Ausführungsbeispiel nach Figur 9 ist die Eingangsöffnung (1) und die Ausgangsöffnung (2) von einem Kanal (12) eines ortsfesten Bauteils(6) gebildet. In dem Kanal (12) ist die Druckfeder (3) angeordnet, deren Achse (A) sich quer zur Längsrichtung des Kanals (12) erstreckt. Mittels des Steuerglieds (8), das die Abdeckung (5) bildet, ist die Druckfeder (3) zusammendrückbar. Figur 9 zeigt die Öffnungsstellung, in der eine Strömung (g) quer durch die Druckfeder (3) hindurch von der Eingangsöffnung (1) zur Ausgangsöffnung (2) stattfindet. Wird das Steuerglied(8) in Richtung des Pfeiles (P) druckbeaufschlagt, dann verringern sich die Abstände der Windungen (3'), wodurch eine Drosselung der Strömung (g) erfolgt. Sind die Windungen(3') dicht gegeneinander gedrückt, dann ist die Strömung unterbrochen.In the exemplary embodiment according to FIG. 9, the inlet opening (1) and the outlet opening (2) are formed by a channel (12) of a stationary component (6). The compression spring (3) is arranged in the channel (12), the axis (A) of which extends transversely to the longitudinal direction of the channel (12). The compression spring (3) can be compressed by means of the control element (8) which forms the cover (5). FIG. 9 shows the opening position in which a flow (g) takes place across the compression spring (3) from the inlet opening (1) to the outlet opening (2). If the control element (8) is pressurized in the direction of the arrow (P), then the distances between the turns (3 ') decrease, as a result of which the flow (g) is throttled. If the turns (3 ') are pressed tightly against one another, then the flow is interrupted.

Das Ausführungsbeispiel nach Figur 10 ist dem nach Figur 9 ähnlich. Das ortsfeste Bauteil (6) ist rohrförmig gestaltet und weist die Eingangsöffnung (1) und die Ausgangsöffnung (2) auf. In ihm sind zwei verschiebliche Bauteile (9) gelagert, zwischen denen sich die Druckfeder (3) befindet.The embodiment of Figure 10 is similar to that of Figure 9. The stationary component (6) is tubular and has the inlet opening (1) and the outlet opening (2). Two displaceable components (9) are mounted in it, between which the compression spring (3) is located.

Figur 10a zeigt die Öffnungsstellung, in der die Druckfeder (3) entspannt ist, so daß durch sie hindurch eine radiale Strömung (h) von der Eingangsöffnung (1) zur Ausgangsöffnung (2) vorliegt.Figure 10a shows the open position in which the compression spring (3) is relaxed so that there is a radial flow (h) through it from the inlet opening (1) to the outlet opening (2).

Figur 10b zeigt die Schließstellung. Die verschieblichen Bauteile (9) sind durch Druck in Richtung der Pfeile (P) so zusammengedrückt, daß die Druckfeder (3) eine Strömung von der Eingangsöffnung (1) zur Ausgangsöffnung (2) hin unterbricht.Figure 10b shows the closed position. The displaceable components (9) are compressed by pressure in the direction of the arrows (P) such that the compression spring (3) interrupts a flow from the inlet opening (1) to the outlet opening (2).

Beim Ausführungsbeispiel nach Figur 11 ist das relativ ortsfeste Bauteil (6) von einem rohrförmigen Eintauchausguß gebildet. Dieser ragt in die Metallschmelze (M) einer Kokille (13). Der Gießpulver-Schlackespiegel ist mit S bezeichnet. In der Schmelze (M) schwimmt das verschiebliche Bauteil (9) als Schwimmkörper. Dieses bildet die Abdeckung (5) und seitliche Ausgangsöffnungen (2) und ist an dem Eintauchausguß (6) verschieblich geführt. Zwischen der Abdeckung (5) und der Unterkante des Eintauchausgusses (6) ist die Druckfeder (3) angeordnet. Das verschiebliche Bauteil(9) wird je nach der Höhe des Schmelzenspiegels (S) durch die Auftriebskraft (P) gegen die Kraft der Druckfeder (3) mehr oder weniger nach oben gedrückt, wodurch sich eine entsprechende Regelung des Badspiegels (S) ergibt. Bei relativ niedrigem Stand des Spiegels (S) ist die Druckfeder (3) weit entspannt, so daß die Windungen (3') entsprechend weit beabstandet sind und damit ein entsprechend großer Volumenstrom von der Eingangsöffnung (1) des Eintauchausgusses (6) durch die Druckfeder (3) hindurch zu den Ausgangsöffnungen (2) fließt. Bei steigendem Spiegel (S) schwimmt das verschiebliche Baute) (9) entsprechend hoch, wodurch die Druckfeder (3) komprimiert wird, so daß deren Windungen (3') nur noch einen kleineren Schmelzenstrom durchlassen. Im Grenzfall ist das verschiebliche Bauteil (9) so weit hochgeschwommen, daß die Druckfeder (3) vollständig zusammengedrückt ist, so daß der Schmelzenfluß vom Eintauchausguß (6) in die Metallschmelze (M) unterbrochen ist.In the exemplary embodiment according to FIG. 11, the relatively stationary component (6) is formed by a tubular immersion nozzle. This protrudes into the molten metal (M) of a mold (13). The mold powder slag level is labeled S. The displaceable component (9) floats in the melt (M) as a floating body. This forms the cover (5) and lateral outlet openings (2) and is guided on the immersion spout (6). The compression spring (3) is arranged between the cover (5) and the lower edge of the immersion spout (6). Depending on the height of the melt level (S), the displaceable component (9) is pushed more or less upwards by the buoyancy force (P) against the force of the compression spring (3), which results in a corresponding regulation of the bath level (S). At a relatively low level of the mirror (S), the compression spring (3) is largely relaxed, so that the windings (3 ') are spaced accordingly far and thus a correspondingly large volume flow from the inlet opening (1) of the immersion spout (6) through the compression spring (3) flows through to the outlet openings (2). When the mirror (S) rises, the displaceable structure (9) floats correspondingly high, as a result of which the compression spring (3) is compressed, so that its windings (3 ') only allow a smaller melt flow to pass through. In the limit case, the displaceable component (9) floated up so far that the compression spring (3) is completely compressed, so that the melt flow from the immersion spout (6) into the molten metal (M) is interrupted.

Claims (12)

Verschluß- und/oder Regelvorrichtung, insbesondere für einen metallischen Schmelzenstrom, mit einem Verschlußorgan zwischen einer Eingangsöffnung und einer Ausgangsöffnung,
dadurch gekennzeichnet,
daß das Verschlußorgan von einer wendelförmigen Feder (3) gebildet ist, daß die Feder (3) in demjenigen Zustand, in dem ihre Windungen (3') dicht aneinanderliegen, die Strömung von der Eingangsöffnung (1) zur Ausgangsöffnung (2) sperrt, daß die Feder (3) in demjenigen Zustand, in dem ihre Windungen (3') beabstandet sind, die Strömung von der Eingangsöffnung (1) zur Ausgangsöffnung (2) mehr oder weniger freigibt, wobei die Strömung durch die Abstände zwischen den Windungen (3') tritt, und daß die Feder (3) mittels eines gegen die Federkraft beweglichen Steuerglieds (8) beaufschlagbar ist.Closure and / or control device, in particular for a metallic melt stream, with a closure member between an inlet opening and an outlet opening,
characterized,
that the closure member is formed by a helical spring (3), that the spring (3) blocks the flow from the inlet opening (1) to the outlet opening (2) in the state in which its turns (3 ') lie close together the spring (3) in the state in which its turns (3 ') are spaced apart more or less releases the flow from the inlet opening (1) to the outlet opening (2), the flow passing through the distances between the turns (3') ) occurs, and that the spring (3) can be acted upon by a control member (8) movable against the spring force. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß die Feder (3) eine Druckfeder ist.Device according to claim 1,
characterized,
that the spring (3) is a compression spring. Vorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die Feder (3) aus keramischem Material mit rechteckigem Querschnittsprofil besteht.Device according to claim 1 or 2,
characterized,
that the spring (3) consists of ceramic material with a rectangular cross-sectional profile. Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Eingangs- oder Ausgangsöffnung (1, 2) an die eine Seite des koaxialen Innenraumes (4) der Feder (3) anschließt und daß die Ausgangs- bzw. Eingangsöffnung (2, 1) außerhalb der Feder (3) liegt.Device according to one of the preceding claims,
characterized,
that the input or output opening (1, 2) connects to one side of the coaxial interior (4) of the spring (3) and that the output or input opening (2, 1) is outside the spring (3). Vorrichtung nach Anspruch 4,
dadurch gekennzeichnet,
daß die andere Seite des Innenraums (4) der Feder (3) durch eine Abdeckung (5) geschlossen ist.Device according to claim 4,
characterized,
that the other side of the interior (4) of the spring (3) is closed by a cover (5). Vorrichtung nach einem der vorhergehenden Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß die Eingangs- und Ausgangsöffnung (1, 2) außerhalb des Innenraums (4) der Feder (3) liegen und daß die Federachse (A) quer zur Strömung steht.Device according to one of the preceding claims 1 to 3,
characterized,
that the inlet and outlet opening (1, 2) are outside the interior (4) of the spring (3) and that the spring axis (A) is transverse to the flow. Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Feder (3) axial zwischen einem ortsfesten Bauteil (6) und einem mittels eines Steuerglieds (8) verschieblichen Bauteil (9) angeordnet ist.Device according to one of the preceding claims,
characterized,
that the spring (3) is arranged axially between a stationary component (6) and a component (9) displaceable by means of a control member (8). Vorrichtung nach Anspruch 7,
dadurch gekennzeichnet,
daß das verschiebliche Bauteil (9) die Abdeckung (5) bildet.Device according to claim 7,
characterized,
that the displaceable component (9) forms the cover (5). Vorrichtung nach Anspruch 7,
dadurch gekennzeichnet,
daß das verschiebliche Bauteil (9) die Ausgangsöffnung (2) bildet.Device according to claim 7,
characterized,
that the displaceable component (9) forms the exit opening (2). Vorrichtung nach Anspruch 7,
dadurch gekennzeichnet,
daß das verschiebliche Bauteil (9) ein Schwimmkörper in einer Metallschmelze (M) ist.Device according to claim 7,
characterized,
that the displaceable component (9) is a floating body in a molten metal (M). Vorrichtung nach Anspruch 10,
dadurch gekennzeichnet,
daß die Ausgangsöffnung (2) am Schwimmkörper (9) ausgebildet ist.Apparatus according to claim 10,
characterized,
that the exit opening (2) is formed on the floating body (9). Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Innenraum (4) der Feder (3) einerseits axial zu der Eingangsöffnung (1) und andererseits axial zu einem Kanal (10) hin offen ist.Device according to one of the preceding claims,
characterized,
that the interior (4) of the spring (3) is open on the one hand axially to the inlet opening (1) and on the other hand axially to a channel (10).
EP97101859A 1996-02-24 1997-02-06 Shut-off and/or control device, in particular for a molten metal stream Withdrawn EP0794025A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19607089 1996-02-24
DE1996107089 DE19607089C1 (en) 1996-02-24 1996-02-24 Closure and regulating device for flow of metal

Publications (2)

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EP0794025A2 true EP0794025A2 (en) 1997-09-10
EP0794025A3 EP0794025A3 (en) 1998-11-25

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NO315031B1 (en) * 2002-02-06 2003-06-30 Sigmund Rekkedal Dosing valve with eccentric open function with force torque for gravity casting of liquid metal
CN105546984B (en) * 2016-02-03 2017-06-30 西南大学 A kind of vacuum heater

Citations (1)

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US4735638A (en) 1986-11-18 1988-04-05 The United States Of America As Represented By The United States Department Of Energy Filter unit for use at high temperatures

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US2362232A (en) * 1943-04-15 1944-11-07 Protectoseal Company Of Americ Compensator
US2965129A (en) * 1955-11-21 1960-12-20 Harry C Faust Coiled spring valve
US3011512A (en) * 1959-08-24 1961-12-05 Alfred M Moen Anti-siphoning device
US3738419A (en) * 1971-08-26 1973-06-12 Phelps Dodge Copper Prod Molten metal level control for continuous casting
US3896834A (en) * 1973-10-09 1975-07-29 Jr Herman L Paul Valves with spring valve members
US4700746A (en) * 1985-03-13 1987-10-20 Anchor/Darling Valve Company Control valve for high pressure fluids
US4858644A (en) * 1988-05-31 1989-08-22 Otis Engineering Corporation Fluid flow regulator
DE3838903A1 (en) * 1988-11-17 1990-05-23 Didier Werke Ag GASKET FOR FIRE-RESISTANT, METAL MELTING LEADING COMPONENTS

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US4735638A (en) 1986-11-18 1988-04-05 The United States Of America As Represented By The United States Department Of Energy Filter unit for use at high temperatures

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