EP0345407B1 - Verfahren zur Reglung des Durchsatzes an einem Schieber und Schieber für die Durchführung dieses Verfahrens - Google Patents

Verfahren zur Reglung des Durchsatzes an einem Schieber und Schieber für die Durchführung dieses Verfahrens Download PDF

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Publication number
EP0345407B1
EP0345407B1 EP88870106A EP88870106A EP0345407B1 EP 0345407 B1 EP0345407 B1 EP 0345407B1 EP 88870106 A EP88870106 A EP 88870106A EP 88870106 A EP88870106 A EP 88870106A EP 0345407 B1 EP0345407 B1 EP 0345407B1
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EP
European Patent Office
Prior art keywords
opening
plate
axis
fixed
mobile
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Revoked
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EP88870106A
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English (en)
French (fr)
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EP0345407A1 (de
Inventor
Philippe Mutsaarts
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Hepworth Refractories (Belgium) SA
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Hepworth Refractories (Belgium) SA
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Application filed by Hepworth Refractories (Belgium) SA filed Critical Hepworth Refractories (Belgium) SA
Priority to ES198888870106T priority Critical patent/ES2030535T3/es
Priority to EP88870106A priority patent/EP0345407B1/de
Priority to DE8888870106T priority patent/DE3868404D1/de
Priority to AT88870106T priority patent/ATE72528T1/de
Priority to FI892813A priority patent/FI892813A/fi
Priority to BR898902718A priority patent/BR8902718A/pt
Priority to JP1145503A priority patent/JPH0230367A/ja
Publication of EP0345407A1 publication Critical patent/EP0345407A1/de
Priority to US07/544,056 priority patent/US5076476A/en
Publication of EP0345407B1 publication Critical patent/EP0345407B1/de
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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
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/38—Means for operating the sliding gate

Definitions

  • the present invention relates to a method for adjusting the flow rate of a liquid, in particular of a molten material, between a maximum flow rate and a zero flow rate, in a valve comprising at least one fixed plate and a mobile plate superposed, constantly kept in contact, each having at least one opening, this process consisting in placing said openings more or less opposite one another by moving the aforementioned movable plate.
  • valves or obturators currently known, in particular those used in the steel industry and in particular for continuous casting, are divided into two types, namely a first type of valve whose movable plate is moved in a rectilinear direction and in two directions to form a drawer system and a second type of valve whose movable plate is driven in a circular motion to present, in both directions, its opening or openings facing or away from an opening made in the fixed plate.
  • valves or shutters whatever their type, have first of all the serious drawback of causing, during movements of the movable plate and especially during movements aimed at reducing or interrupting the jet of liquid, wear which is located on a relatively small portion of the edges of the opening of the movable plate, which, on the one hand, requires increasing, as and as wear, the amplitude of movement of the movable plate to a given flow rate and, on the other hand, leads to an increasingly significant deflection of the jet, which has the consequence of increasing the turbulence and promoting the deposition of chemical compounds and / or of solidified metal under the fixed plate and in the collecting nozzle associated with the opening of the latter, with the effect of further increasing the disturbance of the jet and this, until the latter is interrupted.
  • valve make it necessary to replace movable plates, which are costly elements, while requiring the valve to be switched off and entailing a non-negligible labor cost, whereas these movable plates are not only partially worn or degraded.
  • valves have other serious drawbacks and in particular: significant risks of damage due to tensions which are not homogeneous due to the irregular heating of the various masses irregularly distributed around the opening of the movable plate and possibly the fixed plate; risks of degradation, for the same reason, due to the different heat losses within the plates and, finally, risks of degradation due to localized heating in extremely reduced zones and always the same of the movable plate.
  • the object of the invention is to remedy these drawbacks and to provide a method which makes it possible to regularly distribute the wear over at least a large part of the periphery of the opening of the movable plate of the valve in order to increase its longevity. while improving in particular the qualities of the jet and eliminating the drawbacks due to disturbances thereof, with the significant possibility of varying, continuously or discontinuously, the zones subjected to heating.
  • said method consists in moving this movable plate in at least two intersecting directions which are determined to at least partially compare the openings of the fixed and movable plates, during the opening of the valve.
  • the invention also relates to a valve in the plates of which the tensions are homogeneous, these plates also having the advantage of offering a balanced heat distribution.
  • this valve has at least its movable plate which is symmetrical with respect to at least one plane passing through the axis of its opening.
  • the fixed and mobile plates of the valve are identical, which significantly reduces the manufacturing and operating costs.
  • Figure 1 is a schematic plan view illustrating the above process and showing the four extreme positions and some intermediate positions that can occupy the opening of the movable plate when the latter is moved in two secant rectilinear directions, which are perpendicular and which intersect the axis of the opening of the fixed plate, the latter opening being shown in solid lines, while the opening of the movable plate is shown in broken lines.
  • Figure 2 is a schematic plan view showing some of the extreme and intermediate positions that can occupy the opening of the movable plate when the latter is moved in concentric circular directions whose center is located outside the projection of the opening of the fixed plate on the movable plate and in rectilinear directions passing through the aforementioned center, one of these circular directions and one of these rectilinear directions intersecting the axis of the opening of the fixed plate, the latter being shown in line full, while the opening of the movable plate is shown in broken lines.
  • Figure 3 is a view similar to Figures 1 and 2 showing various positions that can occupy the opening of the movable plate when the latter is moved in concentric circular directions whose center is located on the axis of the opening of the fixed plate and following rectilinear directions passing through this center.
  • Figure 4 is a view similar to the previous figures and shows various positions that can occupy the opening of the movable plate when the latter is moved in a rectilinear direction intersecting the axis of the opening of the fixed plate and a circular direction whose center is located on the axis of the opening of the movable plate.
  • Figure 5 is a schematic view of the movable plate of a valve according to the invention and means ensuring the movement of this plate in the directions defined in Figure 2, the opening of the fixed plate being shown in broken lines.
  • FIG. 6 is a view similar to FIG. 5 and represents the movable plate of a valve as well as the drive means of the latter that are arranged to move said plate in the directions defined in FIG. 3.
  • FIG. 7 is also a view similar to FIGS. 5 and 6 of a valve whose movable plate is moved in the directions defined in FIG. 4.
  • FIGs 8 and 9 illustrate two variants of the valves shown in Figures 5 to 7.
  • FIGS 10 and 11 show details of plates fitted to valves according to the invention.
  • the process according to the invention and illustrated in the drawings is intended for adjusting the flow rate of a liquid, more particularly of a molten material, in particular in a continuous casting installation, between a maximum flow rate and a zero flow rate using a valve 1 which comprises at least one fixed plate 2 and a mobile plate 3, these plates 2 and 3, which are superimposed, being kept constantly in contact and each having an opening 4 (for the fixed plate) and 5 (for the mobile plate).
  • a valve 1 which comprises at least one fixed plate 2 and a mobile plate 3, these plates 2 and 3, which are superimposed, being kept constantly in contact and each having an opening 4 (for the fixed plate) and 5 (for the mobile plate).
  • the movable plate 3 is disposed between two fixed upper 2 and lower 2 ′ plates in order to be in contact with each of the latter, the openings 4 and 4 ′ of the fixed plates being coaxial and either of identical sections (see figure 10), or of different sections (see figure 11).
  • the opening 4 ′ of the fixed plate 2 ′ has a cross section greater than that of the opening 4 of the fixed plate 2 so that the liquid contained in the opening 5 of the movable plate 3, the cross section of which is identical to that from the opening 4 of the fixed plate 2, can escape through the opening 4 ′ after the valve has closed.
  • This feature is important when the valve is used for pouring molten metal, because it prevents metal from solidifying in the opening 5 of the movable plate 3 after closing the valve and rendering the latter unusable during a next opening of the valve, because of the plug created in the aforementioned opening 5.
  • the same result could be obtained, as shown in Figure 10, by using two fixed plates 2 and 2 ′ whose openings 4 and 4 ′ have the same section.
  • an opening 5 is then provided having its orifice facing the plate 2 which has an area equal to that of the opening 4 of the plate 2 while its orifice facing the plate 2 ′ has an area greater than that of the opening 4 ′ of the fixed plate 2 ′.
  • plates 2, 2 ′ and 3 which are symmetrical with respect to at least one plane passing through the axis 8, 11 of their opening 4.4 ′ and 5.
  • plates 2, 2 ′ and 3 which are symmetrical with respect to at least one plane passing through the axis 8, 11 of their opening 4.4 ′ and 5.
  • plates 2, 2 ′ and 3 which are symmetrical with respect to at least one plane passing through the axis 8, 11 of their opening 4.4 ′ and 5.
  • plates 2, 2 ′ and 3 which are symmetrical with respect to at least one plane passing through the axis 8, 11 of their opening 4.4 ′ and 5.
  • the method according to the invention consists in moving, as shown in FIG. 1, this movable plate 3 following two intersecting rectilinear directions shown diagrammatically by the axis lines 6 and 7 and which are determined to bring, when the valve 1 opens, partially and completely opposite, the openings 4 and 5 of the fixed plates 2 and movable 3.
  • this movable plate 3 following two intersecting rectilinear directions shown diagrammatically by the axis lines 6 and 7 and which are determined to bring, when the valve 1 opens, partially and completely opposite, the openings 4 and 5 of the fixed plates 2 and movable 3.
  • the rectilinear direction 6 intersects the axis 8 of the opening 4 of the fixed plate and the circular direction 7 has its center 9 located on the aforementioned axis 8;
  • the rectilinear direction 6 cuts the axis 8 of the opening 4 of the fixed plate 2 while the circular direction 7 cuts or not this axis 8 and has its center 9 which is located inside the projection of the opening 4 of the fixed plate 2 on the movable plate 3;
  • the straight direction 6 cuts the axis 8 of the opening 4 of the fixed plate while the circular direction 7, which cuts or not this axis 8, has its center 9 which is located outside of the projection of the opening 4 of the fixed plate on the movable plate 3;
  • the circular direction 7 cuts the axis 8 of the opening 4 of the fixed plate and has its center 9 which is located outside the projection of the opening 4 on the movable plate 3, while the rectilinear direction cuts or not this axis 8.
  • the method according to the invention allows, when the openings 4 and 5 of the fixed and movable plates are not completely facing each other in order to throttle the jet, in a drawer system, as shown in FIGS. 4 and 7, just as in the system as illustrated in FIG. 9 and which will be described below, of varying, step by step or continuously, the zone 10 of the movable plate in contact with the molten metal, so as to obtain a better balancing of tensions in the moving plate.
  • the movable plate 3 is moved in a rectilinear direction 6 which intersects the axis 8 of the opening 4 of the fixed plate 2 and in a secant circular direction 7 to direction 6 and who has its center 9 which is located on the axis 11 of the movable plate 3.
  • the movements of the movable plate 3 in the above directions can be programmed to either be carried out simultaneously, or be carried out successively in a determined order or not, these movements can also be carried out, for some or all of the above directions, in the both directions.
  • the valve 1 according to the invention is shown diagrammatically in FIGS. 5 to 9, either by its two fixed 2 and mobile 3 plates and by its means 12 making it possible to move the mobile plate 3 in at least two secant directions 6 and 7 above, or by the axis 8 of the opening 4 of the fixed plate 2, by the movable plate 3 and by said means 12.
  • the valve 1 shown in FIG. 5 is provided with means 12 which make it possible to move the movable plate 3 in rectilinear directions 6, 6 ′ ...- n and concentric circular directions 7,7 ′ .... 7 n such as described above and illustrated in FIG. 2.
  • These means 12 consist, on the one hand, of a first jack 13, mounted for rotation about a fixed axis 14 which is parallel to the axis 11 of the opening 5 of the movable plate 3, the free end of the piston rod 15 of which carries the movable plate 3 so that the axis 16 of the jack 13 intersects the axis of the opening 5 of the movable plate 3 and, on the other hand, by a second cylinder 17, whose axis 18 is parallel to the axis 16 of the cylinder 13 and whose cylinder 19 is fixed to the cylinder 20 of said cylinder 13, which has the free end of its piston rod 21 which moves in a horizontal buttonhole 22 produced in a fixed part 23.
  • the valve 1 shown in Figure 6 is provided with means 12 for moving the movable plate 3 in rectilinear directions 6, 6 ′ ... 6 n and concentric circular directions 7,7 ′ ... 7 n as described above and shown in figure 3.
  • These means 12 comprise a slide 24 in which the movable plate 3 is fixed and which is mounted, so as to be able to move parallel to itself, in a frame 25 in the form of a quadrilateral at right angles.
  • This slide 24 is fixed to the end of the piston rod 26 of a jack 27 whose axis intersects the axis of the opening 5 of the movable plate 3 and which is parallel to one of the sides of the frame 25.
  • This frame 25 and the cylinder 28 of the jack 27 are fixed to a circular ring 29 whose axis is parallel to the axis of the opening 5 of the movable plate 3 or coincides with this latter axis and this, depending on the position occupied by the slide 24 relative to the frame 25 with which it cooperates, a gear motor 30, which is fixed, being provided to drive the crown 29, as well as the frame 25 and the jack 27 which are fixed there, around its axis .
  • FIG. 7 shows a valve 1 according to the invention, the above-mentioned means 12 making it possible to move the movable plate 3 in the rectilinear direction 6 intersecting the axis 11 of the opening 5 of the movable plate 3 and in a circular direction 7 whose the center 9 is located on this axis 11 (see Figure 4).
  • This movable plate 3 is mounted on a support 31 arranged so that it can rotate freely around the aforementioned axis 11.
  • the support 31 is slidably mounted on a support 32, on which it can move freely and parallel to itself in the above-mentioned rectilinear direction 6 and is controlled by the piston rod 33 of a jack 34, which is fixed and whose axis is perpendicular to the axis 11 of the opening 5.
  • a ring gear 35 is associated with the periphery of the movable plate 3 and is coaxial with the opening 5, an endless screw 36 parallel to the direction 6 being provided to drive in rotation, under the control of a gear motor 37, the crown and the movable plate 3 which is fixed there around the axis 11.
  • the valve 1 shown in FIG. 8 is a variant of the valve illustrated in FIG. 5.
  • the movable plate 3 is fixed, at 38 and 39, to the piston rod 40 of a jack 41 whose cylinder is pivotally mounted around a fixed axis 42 parallel to the axis 11 of the opening 5 of the movable plate 3, the axis of the jack 41 being perpendicular to said axis 11.
  • the end 43 of the piston rod 40 is articulated, at 44 and around an axis parallel to the axis 11, at the free end of the piston rod of a jack 46 whose cylinder is pivotally mounted around a fixed axis 47, parallel to axis 11.
  • the valve 1 illustrated in Figure 9 has a movable plate 3 whose movements are caused by means 12 which include a first frame 48, in the form of a quadrilateral whose angles are straight, on one side of which is mounted a worm 49 arranged to move the movable plate 3 in the first frame 48, by means of a nut 53 fixed to the support 54 of the plate 3 in a direction parallel to this side 50.
  • This frame 48 is mounted in a second fixed frame 51, in the form of a quadrilateral whose angles are straight, on one side of which is mounted an endless screw 52 arranged to move the frame 48 in the frame 51, by means of a nut 55 fixed to the frame 48, in a direction perpendicular to the side 50 said frame 48 above, the axis of the worms 49 and 52 being perpendicular.
  • the aforementioned zone 10 of the movable plate 3 in contact with the molten metal in a manner analogous to that shown in FIGS. 4 and 7, the movable plate can be rotated 3, around the axis 11 of its opening 5, in its support 54.
  • valve When the valve is used for molten metal, provision is advantageously made, as shown in FIG. 10, in at least one of the plates 2, 2 ′ and 3, a porous insert 56 through which a gas, such as l 'argon, under pressure.
  • This insert which leads to a gas supply duct, not shown, surrounds the opening of the plate, over at least a significant part of its thickness.
  • the movable plate 3 used in the aforementioned valves will advantageously be encircled by a metal jacket which will be provided with connecting members to the aforementioned means 12 ensuring the movements of said movable plate 3.

Claims (27)

1. Verfahren zum Steuern der Flüssigkeitsdurchflußmenge, insbesondere eines im Schmelzzustand befindlichen Materials, zwischen einer maximalen Durchflußmenge und einer Durchflußmenge von Null in einem Ventil (1), das wenigstens eine feste Platte (2) und eine bewegliche Platte (3) aufweist, die übereinanderliegend angeordnet und ständig in Kontakt miteinander gehalten sind, welche jeweils wenigstens eine Öffnung (4,5) aufweisen, bei welchem die Öffnungen (4,5) mehr oder weniger einander gegenübergestellt werden, indem die bewegliche Platte (3) verschoben wird, dadurch gekennzeichnet, daß man die bewegliche Platte (3) in wenigstens einer von zwei Sekantenrichtungen (6 und 7) verschiebt, die man bestimmt, um wenigstens teilweise die Öffnungen (4,5) der festen Platte (2) und der beweglichen Platte (3) beim Öffnen des Ventils einander gegenüberzustellen.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß man die beiden Richtungen (6 und 7) derart bestimmt, daß wenigstens eine derselben die Achse (8) der Öffnung (4) schneidet, die in der festen Platte (2) vorgesehen ist.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die beiden Richtungen (6 und 7), in denen die bewegliche Platte (3) verschoben wird, geradlinig sind.
4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß die beiden geradlinigen Richtungen (6 und 7) senkrecht sind.
5. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß eine der beiden Richtungen (6 und 7) geradlinig (6) und die andere kreisförmig (7) ist.
6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß der Mittelpunkt (9) der kreisförmigen Richtung (7) auf der Achse (8) der Öffnung (4) der festen Platte (2) liegt, und die geradlinige Richtung (6) diese Achse (8) schneidet.
7. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß der Mittelpunkt (9) der kreisförmigen Richtung (7) im Innern der Projektion der Öffnung (4) der festen Platte (2) auf die bewegliche Platte (3) liegt, die geradlinige Richtung die Achse (8) der Öffnung (4) der festen Platte (2) schneidet und die kreisförmige Richtung diese Achse (8) schneidet oder nicht.
8. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß der Mittelpunkt (9) der kreisförmigen Richtung (7) außerhalb der Projektion der Öffnung (4) der festen Platte auf die bewegliche Platte liegt, die geradlinige Richtung (6) die Achse (8) der Öffnung der festen Platte schneidet und die kreisförmige Richtung diese Achse schneidet oder nicht.
9. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß der Mittelpunkt (9) der kreisförmigen Richtung (7) ausserhalb der Projektion der Öffnung (4) der festen Platte auf die bewegliche Platte (3) liegt, die kreisförmige Richtung der Achse (8) der Öffnung der festen Platte schneidet, und die geradlinige Richtung (6) diese Achse (8) schneidet oder nicht.
10. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die beiden Richtungen, in denen man die bewegliche Platte (3) verschiebt, kreisförmig sind.
11. Verfahren nach Anspruch 10, dadurch gekennzeichnet, daß der Mittelpunkt einer der kreisförmigen Richtungen auf der Achse (8) der Öffnung (4) der festen Platte (2) liegt, und die andere kreisförmige Richtung diese Achse (8) schneidet.
12. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß man die bewegliche Platte (3) einerseits in zwei geradlinige Richtungen (6 und 7) verschiebt, von denen wenigstens eine die Achse (8) der Öffnung (4) der festen Platte (2) schneidet, und andererseits in eine kreisförmige Richtung verschiebt, deren Mittelpunkt (9) auf der Achse (11) der Öffnung (5) der beweglichen Platte (3) liegt.
13. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß man die bewegliche Platte (3) in eine geradlinige Richtung (6) verschiebt, die die Achse (8) der Öffnung (4) der festen Platte (2) schneidet, und in eine kreisförmige Richtung (7), deren Mittelpunkt (9) auf der Achse (11) der Öffnung (5) der beweglichen Platte liegt.
14. Verfahren nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß man die bewegliche Platte (3) gleichzeitig in diese Richtungen verschiebt.
15. Verfahren nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß man aufeinanderfolgend in einer vorbestimmten oder einer nicht-vorbestimmten Reihenfolge die Verschiebungen der beweglichen Platte (3) in die angegebenen Richtungen vornimmt.
16. Verfahren nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß man die Verschiebungen der beweglichen Platte (3) in die angegebenen Richtungen in beiden Richtungen vornimmt.
17. Ventil zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 16, das wenigstens eine feste Platte (2) und eine bewegliche Platte (3) aufweist, die übereinanderliegend angeordnet und ständig in Kontakt miteinander gehalten sind, welche wenigstens jeweils eine Öffnung (4, 5) aufweisen, dadurch gekennzeichnet, daß es eine Antriebseinrichtung (12) zum Verschieben der beweglichen Platte in wenigstens die beiden angegebenen Sekantenrichtungen (6, 7) aufweist.
18. Ventil nach Anspruch 16, dadurch gekennzeichnet, daß die bewegliche Platte in einem ersten Rahmen (48) in Form eines vierseitigen Körpers angebracht ist, welcher rechte Winkel hat, und der eine Einrichtung, wie eine Schnecke (49) aufweist, die derart angetrieben wird, daß die bewegliche Platte in dem ersten Rahmen in eine Richtung parallel zu einer der Seiten des Rahmens verschoben wird, daß dieser in einem zweiten festen Rahmen (51) in Form einer vierseitigen Körpers mit rechten Winkeln angeordnet ist, und eine Einrichtung, wie eine Schnecke (52) aufweist, die derart angetrieben ist, daß der erste Rahmen (58) in dem zweiten Rahmen (51) in eine Richtung parallel zu einer der Seiten verschoben wird, und daß die Achse der letztgenannten Schnecke (52) senkrecht zur Achse der Schnecke (49) ist, die auf dem ersten Rahmen (48) vorgesehen ist.
19. Ventil nach Anspruch 17, dadurch gekennzeichnet, daß die bewegliche Platte (3) auf der Kolbenstange (15) einer ersten Kolben-Zylindereinrichtung (13) befestigt ist, deren Zylinder (20) drehbar um eine feste Achse (14) parallel zur Achse (11) der Öffnung (5) der beweglichen Platte (3) drehbar vorgesehen ist, daß eine zweite Kolbenzylindereinrichtung (17) der ersten Kolbenzylindereinrichtung (13) zugeordnet ist, um den Zylinder (20) desselben um die feste Achse (14) in Schwingung zu versetzen, auf der dieser drehbar angebracht ist.
20. Ventil nach Anspruch 17, dadurch gekennzeichnet, daß die bewegliche Platte (3) auf einem Gleitstück (24) befestigt ist, das in einem Rahmen (25) in Form eines viereckigen Körpers mit rechten Winkeln vorgesehen ist, daß das Gleitstück (24) an der Kolbenstange einer Kolben-Zylindereinrichtung befestigt ist, deren Achse die Achse der Öffnung (5) der beweglichen Platte (3) schneidet und der parallel zu einer der Seiten des Rahmens (25) ist, daß der letztgenannte und die Kolben-Zylindereinrichtung auf einem kreisförmigen Zahnkranz (29) befestigt sind, dessen Achse parallel zur Achse der Öffnung der beweglichen Platte ist oder die letztgenannte entsprechend der Position des Gleitstückes bezüglich des angegebenen Rahmens übereinstimmt, daß der kreisförmige Zahnkranz (29) derart gelagert ist, daß er sich um seine Achse drehen kann, und daß ein fester Untersetzungsmotor (30) zum Drehantreiben des Zahnkranzes um diese Achse vorgesehen ist.
21. Ventil nach Anspruch 17, dadurch gekennzeichnet, daß die bewegliche Platte (3) auf einem Träger (31) angebracht ist, der derart angetrieben ist, daß diese Platte sich frei um die Achse (11) der Öffnung (5) derselben drehen kann, daß der Träger (31) beweglich ist und an einer Einrichtung, wie einer Kolbenstange einer Kolben-Zylindereinrichtung angebracht ist, deren Zylinder fest ist und der derart beaufschlagt wird, daß die Platte in eine geradlinige Richtung (6) verschoben wird, die durch die Achse (11) der Öffnung (5) der beweglichen Platte (3) geht, daß das Ventil einen Zahnkranz (35) aufweist, der mit der beweglichen Platte (3) derart verbunden ist, daß er koaxial zur Öffnung (5) ist, und daß Antriebseinrichtungen (36, 37) vorgesehen sind, welche mit diesem Kranz (35) zusammenarbeiten, um denselben um seine Achse drehanzutreiben.
22. Ventil nach einem der Ansprüche 17 bis 21, dadurch gekennzeichnet, daß die bewegliche Platte (3) und die feste Platte (2) bezüglich wenigstens einer Ebene symmetrisch sind, die durch die Achse der Öffnungen (5, 4) geht.
23. Ventil nach Anspruch 22, dadurch gekennzeichnet, daß die bewegliche Platte (3) in Form eines Rotationszylinders ausgebildet ist, die von dieser Platte gebildete Öffnung (5) koaxial zum Zylinder und einerseits vorzugsweise in Form eines Rotationszylinders ausgebildet ist, und daß andererseits dieser dieselbe Form und denselben Querschnitt wie die Öffnung (4) hat, die von der festen Platte (2) gebildet wird.
24. Ventil nach Anspruch 23, dadurch gekennzeichnet, daß die feste Platte (2) und die bewegliche Platte (3) identisch sind.
25. Ventil nach einem der Ansprüche 17 bis 22, dadurch gekennzeichnet, daß die bewegliche Platte (3) zwischen zwei festen, oberen und unteren Platten (2, 2′) gleitet, deren Öffnungen (4, 4′) den gleichen Querschnitt haben, daß die Öffnung (5) der beweglichen Platte (3) eine Öffnung hat, die zur oberen festen Platte (2) gedreht ist, die eine Fläche im wesentlichen gleich jener des Querschnitts der Öffnung (4) der oberen und unteren festen Platte sowie jener der Öffnung hat, die zur festen unteren Platte (2′) gedreht ist.
26. Ventil nach einem der Ansprüche 17 bis 22, dadurch gekennzeichnet, daß die bewegliche Platte (3) zwischen zwei oberen und unteren festen Platten (2, 2′) gleitet, die Öffnung (4) der oberen festen Platte (2) und die Öffnung (5) der beweglichen Platte (3) den gleichen Querschnitt haben, während die Öffnung (4′) der festen unteren Platte (2′) einen Querschnitt hat, der größer als die Querschnitte der Öffnungen (4, und 5) der festen oberen Platte (2) und der beweglichen Platte (3) ist.
27. Ventil nach einem der Ansprüche 22 bis 26, dadurch gekennzeichnet, daß wenigstens eine der Platten einen porösen Einsatz (56) aufweist, durch den ein Gas zirkulieren kann, der in der Platte wenigstens mit seinem Hauptteil in Dickenrichtung um die Öffnung dieser Platte versenkt angeordnet ist, und daß eine Zufuhrleitung für Gas, wie unter Druck stehendes Argon zur Gaszuleitung zu dem Einsatz (56) vorgesehen ist.
EP88870106A 1988-06-09 1988-06-09 Verfahren zur Reglung des Durchsatzes an einem Schieber und Schieber für die Durchführung dieses Verfahrens Revoked EP0345407B1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
ES198888870106T ES2030535T3 (es) 1988-06-09 1988-06-09 Procedimiento de regulacion de caudal en una valvula de compuerta y valvula de compuerta para la puesta en practica de este procedimiento.
EP88870106A EP0345407B1 (de) 1988-06-09 1988-06-09 Verfahren zur Reglung des Durchsatzes an einem Schieber und Schieber für die Durchführung dieses Verfahrens
DE8888870106T DE3868404D1 (de) 1988-06-09 1988-06-09 Verfahren zur reglung des durchsatzes an einem schieber und schieber fuer die durchfuehrung dieses verfahrens.
AT88870106T ATE72528T1 (de) 1988-06-09 1988-06-09 Verfahren zur reglung des durchsatzes an einem schieber und schieber fuer die durchfuehrung dieses verfahrens.
FI892813A FI892813A (fi) 1988-06-09 1989-06-08 Foerfarande foer reglering av en ventils stroemningsmaengd och ventil foer tillaempning av foerfarandet.
BR898902718A BR8902718A (pt) 1988-06-09 1989-06-08 Processo de regulagem de debito em uma valvula e valvula para a execucao do processo
JP1145503A JPH0230367A (ja) 1988-06-09 1989-06-09 弁における流量制御方法およびこれを使用する弁
US07/544,056 US5076476A (en) 1988-06-09 1990-06-26 Method for controlling a flow rate in a valve and a valve for the application of said method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88870106A EP0345407B1 (de) 1988-06-09 1988-06-09 Verfahren zur Reglung des Durchsatzes an einem Schieber und Schieber für die Durchführung dieses Verfahrens

Publications (2)

Publication Number Publication Date
EP0345407A1 EP0345407A1 (de) 1989-12-13
EP0345407B1 true EP0345407B1 (de) 1992-02-12

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EP88870106A Revoked EP0345407B1 (de) 1988-06-09 1988-06-09 Verfahren zur Reglung des Durchsatzes an einem Schieber und Schieber für die Durchführung dieses Verfahrens

Country Status (8)

Country Link
US (1) US5076476A (de)
EP (1) EP0345407B1 (de)
JP (1) JPH0230367A (de)
AT (1) ATE72528T1 (de)
BR (1) BR8902718A (de)
DE (1) DE3868404D1 (de)
ES (1) ES2030535T3 (de)
FI (1) FI892813A (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0617139A (ja) * 1992-05-27 1994-01-25 Sumitomo Metal Ind Ltd 自動車外装用高強度鋼板の製造方法
EP1707291A1 (de) * 2005-03-10 2006-10-04 Tech-Gate S.A. Schiebeverschluss

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4896801A (en) * 1967-07-11 1990-01-30 Flo-Con Systems, Inc. Method for controlling the discharge channel of a casting container (tundish) for metallic meltings, and a device for carrying out the method
JPS6056580B2 (ja) * 1977-07-13 1985-12-11 日本鋼管株式会社 連続鋳造における取鍋−タンデイツシユ間のロ−タリーノズル使用による溶湯自動注入法
CH649610A5 (de) * 1980-09-24 1985-05-31 Stopinc Ag Verschlussplattenpaar fuer einen schiebeverschluss.
DE3211787A1 (de) * 1981-03-30 1983-02-03 Zimmermann & Jansen GmbH, 5160 Düren Verfahren zur steuerung von ausgussschiebern von giessgefaessen fuer metallurgische abguesse und fuer ein derartiges verfahren verwendbare einrichtung zur exakten stellungsrueckmeldung eines arbeitskolbens
US4597048A (en) * 1983-09-07 1986-06-24 United States Steel Corporation Digital flow regulation of liquid-level control for a continuous casting mold
DE3433558C2 (de) * 1983-11-18 1986-07-31 Stopinc Ag, Baar Schieberverschluß für den Ausguss metallurgischer Gefäße
DE3423157C1 (de) * 1984-06-22 1985-06-20 Metacon AG, Zürich Feuerfestes Plattenpaar fuer schwenk- bzw. drehbewegliche Schiebeverschluesse
FR2631266B1 (fr) * 1988-05-13 1990-09-14 Detalle Edouard Obturateur de coulee a deplacement lineaire et symetrie axiale

Also Published As

Publication number Publication date
US5076476A (en) 1991-12-31
ATE72528T1 (de) 1992-02-15
BR8902718A (pt) 1990-01-23
EP0345407A1 (de) 1989-12-13
JPH0230367A (ja) 1990-01-31
ES2030535T3 (es) 1992-11-01
FI892813A (fi) 1989-12-10
DE3868404D1 (de) 1992-03-26
FI892813A0 (fi) 1989-06-08

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