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EP1133372A1 - Tilting tank for processing liquid metal and device for sealed connection with fixed chute - Google Patents

Tilting tank for processing liquid metal and device for sealed connection with fixed chute

Info

Publication number
EP1133372A1
EP1133372A1 EP99949050A EP99949050A EP1133372A1 EP 1133372 A1 EP1133372 A1 EP 1133372A1 EP 99949050 A EP99949050 A EP 99949050A EP 99949050 A EP99949050 A EP 99949050A EP 1133372 A1 EP1133372 A1 EP 1133372A1
Authority
EP
European Patent Office
Prior art keywords
tank
liquid metal
axis
tilting
fixed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99949050A
Other languages
German (de)
French (fr)
Other versions
EP1133372B1 (en
Inventor
Jacques Griffon
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.)
Novelis Inc Canada
Original Assignee
Pechiney Rhenalu SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pechiney Rhenalu SAS filed Critical Pechiney Rhenalu SAS
Publication of EP1133372A1 publication Critical patent/EP1133372A1/en
Application granted granted Critical
Publication of EP1133372B1 publication Critical patent/EP1133372B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B22D41/50—Pouring-nozzles
    • B22D41/502—Connection arrangements; Sealing means therefor
    • 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
    • B22D41/04—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like tiltable

Definitions

  • the invention relates to a tilting tank for the treatment of liquid metal, typically for the treatment by gases or filtration of liquid aluminum or magnesium or their alloys, and its device for sealing assembly with fixed troughs used for the 'supply or evacuation of said liquid metal from the tank.
  • a tank of liquid metal used for its treatment by gases or for its filtration or simply for its storage on standby has a capacity generally not exceeding 3 tonnes and comprises devices for feeding and leaving the liquid metal. Said liquid metal enters and leaves the tank continuously, however it is regularly necessary to empty the latter partially or entirely by tilting around a horizontal axis at an angle typically between 30 ° and 90 °.
  • the tank can be equipped with a special drain hole located in its lower part.
  • the liquid metal outlet device comprises an orifice, or tap hole, usually drilled at the top of one of the walls of the tank, extended by a pouring spout pouring the liquid metal into a fixed discharge chute.
  • the device for supplying liquid metal from a fixed chute is generally of the same kind.
  • the tank is a rectangular parallelepiped and the tilting axis parallel to its long length. It is essential that the articulated connection between the spout integral with the tank and the fixed chute remains tight against liquid metal at high temperature, despite repeated heating and cooling cycles of the installation.
  • the tank equipped with such an arrangement When tilting, the tank equipped with such an arrangement has a large size, in particular when the tilting angle is 90 °, this space being due to the fact that the tilting axis passes at the end of the spout .
  • metal can freeze in the articulated device, in particular between the toggle, the spout and the chute, which complicates and particularly hinders maintenance or disassembly operations.
  • Such a device can only be used for small tilt angles due to the fact that the braid is driven as soon as the tilt angle becomes a little large. Thus, this device is not applicable to treatment vessels, in particular those which tilt with large angles.
  • it is difficult to obtain a good seal due to the fact that said two parts embedded one inside the other expand differently in the diametrical direction, that the troughs easily deform during the numerous thermal cycles which they undergo and that the tightening force of the braid is not adjustable.
  • there is a great risk of blockage of the device due to the metal which can slip and freeze in the gap between the spout and the chute.
  • the Applicant has thus sought to avoid the above drawbacks and to develop a tilting treatment tank of reduced tilting size and simultaneously having an articulated connection device, between the spout secured to the tank and the fixed chute, perfectly waterproof while being simple to design and use (adjustment, maintenance, disassembly, cleaning) and without the said device being able to cause the freezing (solidification) of liquid metal.
  • the invention is a liquid metal treatment tank tilting around an axis, fed by a fixed chute and pouring said liquid metal into a fixed chute. evacuation, said tank comprising at least one through hole for feeding, leaving or emptying the liquid metal formed in one of its walls and extended by a so-called movable spout secured to the tank, characterized in that at least the axis of the fixed discharge chute is coincident with the tilting axis.
  • the axis of the feed chute is also coincident with the tilting axis. It is particularly advantageous to practice this arrangement for tanks tilting at an angle greater than 30 ° and up to 90 °.
  • the tank is at least approximately rectangularepipedic rectangle, its walls possibly having a slight draft, and the tilting axis is parallel to its long length, that is to say parallel to the large walls and perpendicular to the small ones.
  • Said tilting axis preferably passes through an upper angle of said small walls; in this case it is confused not only with the axes of the fixed chutes and movable pouring or feeding spouts but also with those of the pouring or feeding holes. But it can very well be located at another place in the tank or even offset outside the tank; in this case it is still confused with the axes of the fixed chutes and movable spouts.
  • the ends of the movable spouts and the fixed chutes of circular cross section, aligned on the tilting axis, are connected by a connecting device articulated in rotation around the said axis, tight against liquid metal, capable of rotating an angle greater than 30 ° and up to 90 ° without losing its seal and thus allowing the tank to be partially or totally emptied.
  • Said device articulated in rotation comprises: - An adapter flange secured to the end of the spout, centered on the tilting axis, comprising a bearing surface of a circular joint whose plane is perpendicular to said axis;
  • a clamping device possibly supported on a fixed part, making it possible to adjust and maintain the clamping of the flanges relative to one another to ensure the tightness of the connection while leaving said two flanges pivot the one in relation to the other.
  • the movable spout and the fixed chute being in the extension of one another so that the bearing surfaces of the facing seals correspond perfectly, it is advantageous to have on each of the flanges centering means cooperating with the other and may constitute a centering device.
  • one of the flanges may include a cylindrical protuberance, at the end of which the joint surface may be located; this circular protuberance, like the flange, is designed to engage with gentle friction in a corresponding housing located on the other flange and at the bottom of which may be the other seal surface facing that of the first flange.
  • the tightening device may comprise threaded tie rods bearing on the one hand on one or more supporting parts integral with the frame, fixed or preferably maneuverable, and on the other hand on the connecting flange, by means of parts elastic, for example springs or domed washers of the so-called "belleville” type Nuts allow the tightening force to be adjusted by compressing the elastic parts more or less
  • the elastic parts also make it possible to maintain the seal during thermal cycles by casing the dilations
  • the flanges are generally made of steel or refractory cast iron; the interior of the fixed chute portion can be coated with the same refractory product as that of the spouts, the chutes or the liquid metal tank.
  • the device according to the invention applies to the connection of the liquid metal tank both with its outlet chute and with that of the supply. When it applies to both, the latter are located on the same axis, as already mentioned.
  • the invention also relates to the liquid metal tanks comprising one or more articulated connection devices and the methods implementing the tanks or the said devices according to the invention.
  • the methods are in particular the filtration or treatment by gases of liquid metals such as aluminum, magnesium or their alloys.
  • Figure 1 illustrates the invention and shows a view of a liquid metal tank whose tilting axis passes through the upper part of one of its walls.
  • FIG. 2 represents a profile view of a hinged link in rotation mounted on a liquid metal tank of the type of that of FIG. 1.
  • FIG. 3 illustrates a side view of the preferred embodiment of the articulated link in rotation according to the invention.
  • Figure 1 shows the installation of a passage hole (5) for pouring, emptying or feeding the liquid metal and the spout (7) extending it on a small wall (2) of the tank (1).
  • the through hole (5) is located at the top of said tank, near a large wall (25) (sectional view) perpendicular to the small wall (2); the tilting axis (6) passes through its center and is parallel to said large wall (25). It can be seen that, thanks to this arrangement and to the sealed articulated connection device according to the invention, it is easily possible to completely empty the tank by tilting it in the direction of the arrow (24), the need for space to perform this operation being minimized.
  • FIG. 2 we see in (1) a parallelepipedal liquid metal tank with a small wall (2) having a slight draft, covered internally with a refractory material (2a), and a cover (3) also internally covered with a refractory material (4).
  • a through hole (5) for pouring, emptying or feeding the liquid metal.
  • the tank is tiltable around the tilting axis (6) passing through said passage hole (5).
  • the latter is extended by a movable spout (7) integral with the tank (1) and which pivots with it; it is coated internally with a refractory material (8).
  • the adjustable tightening of the seals (12, 13) can be ensured by threaded tie rods (19) bearing on a fixed part (20) secured to a frame (21), by means of a spring (22) of which the crushing is regulated by nuts.
  • the tight connection device for liquid metal, articulated in rotation around an axis (6) and allowing the tilting of a tank (1) of liquid metal comprises: - an adapter flange (10, 10a, 10b, 10c) secured to the end of the spout (7, 8), centered on the tilting axis (6) and having a circular joint surface perpendicular to said axis (6 ); - a connecting flange (15, 15a, 15b) secured to the end of the fixed chute (17, 18), centered on the tilting axis (6) and comprising a bearing surface of a circular joint, perpendicular to said axis ( 6), facing and cooperating with the previous one;
  • a tightening device (19, 19a, 22, 22a, 22b 22c) making it possible to adjust the tightening of the flanges (10, 10a, 10b. 10c, 15, 15a, 15b) relative to each other to ensure sealing the connection while leaving said flanges (10, 10a, 10b, 10c, 15. 15a, 15b) pivot relative to each other.
  • connection device advantageously comprises a centering device (11, l ia, 14, 14a) of the flanges (10, 10a, 10b, 10c, 15, 15a, 15b) relative to each other .
  • This centering device can comprise, on one of the flanges (10, 10a, 10b, 10c, 15, 15a, 15b), a cylindrical protuberance (11, l ia) engaging with gentle friction without a corresponding housing (14, 14a ) located on the other flange (10, 10a, 10b, 10c, 15, 15a, 15b).
  • one of the joint surfaces can be located at the end of the protuberance (11), the other joint surface being at the bottom of the housing (14), so that the two joint surfaces face each other.
  • the joint bearing surfaces are provided at the end of specific protuberances (15b, 10b) of the flanges (10a, 10b, 10c, 15a, 15b), said bearing surfaces being arranged so that they face each other.
  • the adjustable clamping device comprises threaded tie rods (19) bearing on the one hand on one or more fixed support pieces (20), preferably integral with a frame (21 ) and on the other hand on one of the flanges (10, 15), by means of elastic parts or a spring (22), nuts making it possible to adjust the crushing and, consequently, the clamping force.
  • the adjustable clamping device comprises a protuberance (22c) on one of the flanges (10, 10a, 10b, 10c, 15. 15a, 15b), an annular flange (22b) and means tightening adjustment (19a, 22a), such as bolts (19a) and "belleville” type washers (22a). This variant further simplifies the opening and dismantling of the connection device.
  • the spout (7) may comprise at its end a counter flange (9) on which is tightly fixed the adapter flange (10) comprising a cylindrical protuberance (11).
  • the seal (12) preferably based on graphite. This seal (12) is applied against the corresponding seal (13) placed on the seal surface located at the bottom of the cylindrical housing (14) forming part of the connecting flange (15) and cooperating with the protuberance (1 1) to center the device.
  • the flanges (10, 10a, 10b, 10c, 15, 15a, 15b) may comprise several separate parts which are preferably fixed to each other, for example, using pins stop in rotation (26, 27) or fixing means (28).
  • the rotating stop pins (26, 27) can be welded to the corresponding flanges (10b, 15b) and specific housings provided in the corresponding flanges (10a, 15a).
  • the connecting flange (15, 15a, 15b) is fixed by means of a counter flange (16) on a portion of fixed trough (17) removable, located in the extension of the main body of the fixed trough (18) .
  • a sealed coupling device between the main body (18) and the removable portion (17) of the fixed chute.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Coating With Molten Metal (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Joints Allowing Movement (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Centrifugal Separators (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

The invention concerns a tank (1) for liquid metal processing tilting about an axis (6), fed by a fixed chute and pouring said liquid metal into a fixed evacuating chute (17, 18) comprising at least a passage hole (5) for supplying, discharging or emptying the liquid metal arranged in one of its walls (2) and extended by a so-called mobile nozzle (7, 8) integral with the tank. The invention is characterised in that at least the fixed evacuation chute (17, 18) merges with the tilting axis (6), the nozzle (7, 8) and the fixed chute (17, 18) being assembled together by a linking device articulated in rotation about the tilting axis (6).

Description

CUVE DE TRAITEMENT DE METAL LIQUIDE BASCULANTE ET SON DISPOSITIF DE LIAISON ET ANCHE AVEC UNE GOULOTTE FIXE TILTING LIQUID METAL TREATMENT TANK AND ITS CONNECTION DEVICE AND REED WITH A FIXED CHUTE
DOMAINE TECHNIQUETECHNICAL AREA
L'invention concerne une cuve basculante pour le traitement de métal liquide, typiquement pour le traitement par les gaz ou filtration de l'aluminium ou du magnésium liquides ou de leurs alliages, et son dispositif d'assemblage étanche avec des goulottes fixes servant à l'alimentation ou à l'évacuation dudit métal liquide de la cuve.The invention relates to a tilting tank for the treatment of liquid metal, typically for the treatment by gases or filtration of liquid aluminum or magnesium or their alloys, and its device for sealing assembly with fixed troughs used for the 'supply or evacuation of said liquid metal from the tank.
ETAT DE LA TECHNIQUESTATE OF THE ART
Une cuve de métal liquide servant à son traitement par les gaz ou à sa filtration ou simplement à son stockage en attente, a une capacité ne dépassant pas généralement 3 tonnes et comporte des dispositifs d'alimentation et de sortie du métal liquide. Le dit métal liquide entre et sort en continu de la cuve, cependant il est régulièrement nécessaire de vidanger cette dernière partiellement ou en totalité par basculement autour d'un axe horizontal selon un angle compris typiquement entre 30° et 90° . En plus de cela, la cuve peut être équipée d'un trou de vidange particulier situé dans sa partie basse.A tank of liquid metal used for its treatment by gases or for its filtration or simply for its storage on standby, has a capacity generally not exceeding 3 tonnes and comprises devices for feeding and leaving the liquid metal. Said liquid metal enters and leaves the tank continuously, however it is regularly necessary to empty the latter partially or entirely by tilting around a horizontal axis at an angle typically between 30 ° and 90 °. In addition to this, the tank can be equipped with a special drain hole located in its lower part.
Le dispositif de sortie du métal liquide comprend un orifice, ou trou de coulée, percé habituellement au sommet d'une des parois de la cuve, prolongé par un bec de coulée déversant le métal liquide dans une goulotte fixe d'évacuation. Le dispositif d'alimentation en métal liquide à partir d'une goulotte fixe est généralement de même sorte. Typiquement la cuve est parallélépipédique rectangle et l'axe de basculement parallèle à sa grande longueur. Il est indispensable que la liaison articulée entre le bec solidaire de la cuve et la goulotte fixe reste étanche au métal liquide à haute température, malgré des cycles de chauffage et refroidissement répétés de l'installation.The liquid metal outlet device comprises an orifice, or tap hole, usually drilled at the top of one of the walls of the tank, extended by a pouring spout pouring the liquid metal into a fixed discharge chute. The device for supplying liquid metal from a fixed chute is generally of the same kind. Typically the tank is a rectangular parallelepiped and the tilting axis parallel to its long length. It is essential that the articulated connection between the spout integral with the tank and the fixed chute remains tight against liquid metal at high temperature, despite repeated heating and cooling cycles of the installation.
II est connu de déverser le métal liquide dans une goulotte fixe perpendiculaire à l'axe de basculement horizontal. Ce dernier, habituellement situé à la hauteur du trou de coulée, est alors déporté à l'extérieur de la cuve et passe par l'extrémité commune au bec et à la goulotte agencés dans le prolongement l'un de l'autre.It is known to pour the liquid metal into a fixed chute perpendicular to the horizontal tilting axis. The latter, usually located at the level of the tap hole, is then deported outside the tank and passes through the end common to the spout and the chute arranged in the extension of one another.
Lorsque la cuve est basculée, on voit que le bec de sortie de la dite cuve et la goulotte fixe font un angle variable et que la liaison entre ces deux éléments doit être articulée et étanche. Pour réaliser l'étanchéité de cette articulation il est connu de réaliser une genouillère métallique enveloppant par l'extérieur les extrémités du bec et de la goulotte fixe et de tapisser la face interne de la dite genouillère d'un garnissage, pouvant être une tresse à base graphite, pour assurer l'étanchéité avec les faces externes du bec et de la goulotte. Ainsi, lors du basculement de la cuve, son bec de sortie se déplace en frottant de façon étanche sur le garnissage de la genouillère.When the tank is tilted, we see that the outlet spout of said tank and the fixed chute make a variable angle and that the connection between these two elements must be articulated and sealed. To make this joint watertight it is known to produce a metal toggle wrapping from the outside the ends of the spout and of the fixed chute and to line the internal face of said toggle with a lining, which may be a braid with graphite base, for sealing with the external faces of the spout and the chute. Thus, during the tilting of the tank, its outlet nozzle moves by rubbing in a sealed manner on the lining of the toggle joint.
Lors de son basculement, la cuve équipée d'un tel agencement présente un encombrement important, en particulier lorsque l'angle de basculement est de 90°, cet encombrement étant dû au fait que l'axe de basculement passe à l'extrémité du bec. De plus, du métal peut se figer dans le dispositif articulé, en particulier entre la genouillère, le bec et la goulotte, ce qui complique et gène singulièrement les opérations d'entretien ou de démontage.When tilting, the tank equipped with such an arrangement has a large size, in particular when the tilting angle is 90 °, this space being due to the fact that the tilting axis passes at the end of the spout . In addition, metal can freeze in the articulated device, in particular between the toggle, the spout and the chute, which complicates and particularly hinders maintenance or disassembly operations.
On connaît également des fours de fusion et de stockage de métal liquide de grande capacité (plusieurs dizaines de tonnes) basculant autour d'un axe horizontal et déversant le métal liquide dans une goulotte fixe située dans le prolongement dudit axe, dont l'angle de basculement ne dépasse pas généralement 10 à 20° . Dans ce cas, une liaison rotative étanche entre le bec de coulée solidaire du four, situé également sur l'axe de basculement, et la goulotte fixe de section droite semi circulaire consiste à y emboîter et ajuster le bec solidaire de la cuve, ayant une section droite également semi-circulaire de diamètre légèrement plus petit, et à faire coulisser en rotation les deux parties semi-circulaires l'une par rapport à l'autre à l'aide d'une garniture d'étanchéité, souvent à base de graphite, située entre elles deux.Large-capacity liquid metal melting and storage ovens are also known (several tens of tonnes) tilting around a horizontal axis and discharging the liquid metal into a fixed chute situated in the extension of said axis, the angle of which tilting does not generally exceed 10 to 20 °. In that case, a sealed rotary connection between the pouring spout secured to the furnace, also located on the tilting axis, and the fixed chute of semi-circular cross section consists in fitting in and adjusting the spout integral with the tank, having a straight section also semi -circular of slightly smaller diameter, and to make the two semicircular parts slide in rotation relative to each other using a seal, often based on graphite, located between them of them.
Un tel dispositif n'est utilisable que pour de faibles angles de basculement en raison du fait que la tresse est entraînée dès que l'angle de basculement devient un peu important. Ainsi, ce dispositif n'est pas applicable aux cuves de traitement, en particulier celles qui basculent avec de grands angles. De plus, il est difficile d'obtenir une bonne étanchéité du fait que lesdites deux parties encastrées l'une dans l'autre se dilatent différemment dans le sens diamétral, que les goulottes se déforment facilement lors des nombreux cycles thermiques qu'elles subissent et que la force de serrage de la tresse n'est pas réglable. De plus, il y a de grands risques de blocage du dispositif en raison du métal qui peut aller se glisser et se figer dans l'interstice entre le bec et la goulotte.Such a device can only be used for small tilt angles due to the fact that the braid is driven as soon as the tilt angle becomes a little large. Thus, this device is not applicable to treatment vessels, in particular those which tilt with large angles. In addition, it is difficult to obtain a good seal due to the fact that said two parts embedded one inside the other expand differently in the diametrical direction, that the troughs easily deform during the numerous thermal cycles which they undergo and that the tightening force of the braid is not adjustable. In addition, there is a great risk of blockage of the device due to the metal which can slip and freeze in the gap between the spout and the chute.
La demanderesse a ainsi cherché à éviter les inconvénients ci-dessus et à mettre au point une cuve de traitement basculante d'encombrement de basculement réduit et ayant simultanément un dispositif de liaison articulée, entre le bec solidaire de la cuve et la goulotte fixe, parfaitement étanche tout en étant simple de conception et d'utilisation (réglage, entretien, démontage, nettoyage) et sans que le dit dispositif puisse être la cause de figeage (prise en masse) de métal liquide.The Applicant has thus sought to avoid the above drawbacks and to develop a tilting treatment tank of reduced tilting size and simultaneously having an articulated connection device, between the spout secured to the tank and the fixed chute, perfectly waterproof while being simple to design and use (adjustment, maintenance, disassembly, cleaning) and without the said device being able to cause the freezing (solidification) of liquid metal.
DESCRIPTION DE L'INVENTIONDESCRIPTION OF THE INVENTION
L' invention est une cuve de traitement de métal liquide basculante autour d'un axe, alimentée par une goulotte fixe et déversant ledit métal liquide dans une goulotte fixe d'évacuation, la dite cuve comportant au moins un trou de passage pour l'alimentation, la sortie ou la vidange du métal liquide pratiqué dans une de ses parois et prolongé par un bec dit mobile solidaire de la cuve, caractérisée en ce qu'au moins l'axe de la goulotte fixe d'évacuation est confondu avec l'axe de basculement.The invention is a liquid metal treatment tank tilting around an axis, fed by a fixed chute and pouring said liquid metal into a fixed chute. evacuation, said tank comprising at least one through hole for feeding, leaving or emptying the liquid metal formed in one of its walls and extended by a so-called movable spout secured to the tank, characterized in that at least the axis of the fixed discharge chute is coincident with the tilting axis.
Habituellement l'axe de la goulotte d'alimentation est également confondu avec l'axe de basculement. Il est particulièrement avantageux de pratiquer cet agencement pour des cuves basculant d'un angle supérieur à 30° et pouvant atteindre 90°.Usually the axis of the feed chute is also coincident with the tilting axis. It is particularly advantageous to practice this arrangement for tanks tilting at an angle greater than 30 ° and up to 90 °.
En général, la cuve est au moins approximativement parallelepipedique rectangle, ses parois pouvant présenter une légère dépouille, et l'axe de basculement est parallèle à sa grande longueur, c'est-à-dire parallèle aux grandes parois et perpendiculaires aux petites.In general, the tank is at least approximately rectangularepipedic rectangle, its walls possibly having a slight draft, and the tilting axis is parallel to its long length, that is to say parallel to the large walls and perpendicular to the small ones.
Ledit axe de basculement passe de préférence dans un angle supérieur des dites petites parois; dans ce cas il est confondu non seulement avec les axes des goulottes fixes et des becs mobiles de coulée ou d'alimentation mais également avec ceux des trous de coulée ou d'alimentation. Mais il peut très bien être situé à un autre endroit de la cuve ou même déporté à l'extérieur de la cuve; dans ce cas il est encore confondu avec les axes des goulottes fixes et des becs mobiles.Said tilting axis preferably passes through an upper angle of said small walls; in this case it is confused not only with the axes of the fixed chutes and movable pouring or feeding spouts but also with those of the pouring or feeding holes. But it can very well be located at another place in the tank or even offset outside the tank; in this case it is still confused with the axes of the fixed chutes and movable spouts.
Selon l'invention les extrémités des becs mobiles et des goulottes fixes de section droite circulaire, alignées sur l'axe de basculement, sont reliées par un dispositif de liaison articulée en rotation autour du dit axe, étanche au métal liquide, pouvant tourner d'un angle supérieur à 30° et pouvant atteindre 90° sans perdre son étanchéité et permettant ainsi de vidanger partiellement ou totalement la cuve.According to the invention the ends of the movable spouts and the fixed chutes of circular cross section, aligned on the tilting axis, are connected by a connecting device articulated in rotation around the said axis, tight against liquid metal, capable of rotating an angle greater than 30 ° and up to 90 ° without losing its seal and thus allowing the tank to be partially or totally emptied.
Ledit dispositif articulé en rotation selon l'invention comprend : - une bride d'adaptation assujettie à l'extrémité du bec, centrée sur l'axe de basculement, comportant une portée de joint circulaire dont le plan est perpendiculaire audit axe ;Said device articulated in rotation according to the invention comprises: - An adapter flange secured to the end of the spout, centered on the tilting axis, comprising a bearing surface of a circular joint whose plane is perpendicular to said axis;
- une bride de liaison assujettie à l'extrémité de la goulotte fixe, centrée sur l'axe de basculement, comportant une portée de joint circulaire, dont le plan est perpendiculaire audit axe, faisant face à la précédente et coopérant avec elle ;- A connecting flange secured to the end of the fixed chute, centered on the tilting axis, comprising a bearing surface of a circular joint, the plane of which is perpendicular to said axis, facing the previous one and cooperating with it;
- au moins un joint résistant à la chaleur et au métal liquide situé entre les deux portées ;- at least one heat and liquid metal resistant seal located between the two surfaces;
- un dispositif de serrage, prenant éventuellement appui sur une pièce fixe, permettant de régler et de maintenir le serrage des brides l'une par rapport à l'autre pour assurer l'étanchéité de la liaison tout en laissant lesdites deux brides pivoter l'une par rapport à l'autre.- a clamping device, possibly supported on a fixed part, making it possible to adjust and maintain the clamping of the flanges relative to one another to ensure the tightness of the connection while leaving said two flanges pivot the one in relation to the other.
Il y a de préférence deux joints à base de graphite, un fixé sur la portée de chaque bride, frottant l'un sur l'autre.There are preferably two graphite-based seals, one attached to the seat of each flange, rubbing one on the other.
Le bec mobile et la goulotte fixe étant dans le prolongement l'un de l'autre de façon que les portées des joints en regard correspondent parfaitement, il est avantageux de disposer sur chacune des brides des moyens de centrage coopérant l'un avec l'autre et pouvant constituer un dispositif de centrage.The movable spout and the fixed chute being in the extension of one another so that the bearing surfaces of the facing seals correspond perfectly, it is advantageous to have on each of the flanges centering means cooperating with the other and may constitute a centering device.
Ainsi, une des brides peut comporter une protubérance cylindrique, à l'extrémité de laquelle peut se trouver la portée de joint; cette protubérance circulaire comme la bride est prévue pour s'engager à frottement doux dans un logement correspondant situé sur l'autre bride et au fond duquel peut se trouver l'autre portée de joint faisant face à celle de la première bride. On voit que l'emboîtement de ces deux pièces assure le centrage des portées de joint. Pour obtenir l'étanchéité au métal liquide tout en ayant une force de frottement adaptée pour permettre la rotation d'une bride par rapport à l'autre, il ne reste alors plus qu'à plaquer les deux joints l'un contre l'autre a l'aide du dispositif de serrage Pour éviter que la goulotte fixe ne soit entraînée lors de la rotation du bec, il est avantageux de renforcer son immobilisation à proximité de la bride de liaison, par exemple à l'aide de barres de renfort solidaires d'un bâtiThus, one of the flanges may include a cylindrical protuberance, at the end of which the joint surface may be located; this circular protuberance, like the flange, is designed to engage with gentle friction in a corresponding housing located on the other flange and at the bottom of which may be the other seal surface facing that of the first flange. We see that the interlocking of these two parts ensures the centering of the joint surfaces. To obtain the liquid metal seal while having a friction force adapted to allow the rotation of a flange relative to the other, it then only remains to press the two seals against each other using the clamping device To prevent the fixed chute from being driven during the rotation of the spout, it is advantageous to reinforce its immobilization near the connecting flange, for example by means of integral reinforcement bars of a frame
Le dispositif de serrage peut comprendre des tirants filetés prenant appui d'une part sur une ou des pièces d'appui solidaires du bâti, fixe ou de préférence manœuvrable, et d'autre part sur la bride de liaison, par l'intermédiaire de pièces élastiques, par exemple des ressorts ou des rondelles bombées du type dit « belleville » Des écrous permettent de régler la force de serrage en comprimant plus ou moins les pièces élastiques Les pièces élastiques permettent également de maintenir l'étanchéité lors des cycles thermiques en encaissant les dilatationsThe tightening device may comprise threaded tie rods bearing on the one hand on one or more supporting parts integral with the frame, fixed or preferably maneuverable, and on the other hand on the connecting flange, by means of parts elastic, for example springs or domed washers of the so-called "belleville" type Nuts allow the tightening force to be adjusted by compressing the elastic parts more or less The elastic parts also make it possible to maintain the seal during thermal cycles by casing the dilations
On voit qu'un tel dispositif, où les dilatations se produisent dans l'axe, permet de s'affranchir des déformations récurrentes ou endémiques dues aux cycles thermiques subis par l'ensemble lors des arrêts et remise en route de la cuve, et d'obtenir l'étanchéité souhaitée en évitant toute fuite ou figeage intempestifs de métal liquide qui pourraient gêner les manœuvres de la cuve De même pour démonter le dispositif en vue de son nettoyage ou de son entretien (par exemple changement des joints), il suffit d'écarter les deux brides l'une de l'autreWe see that such a device, where the expansions occur in the axis, overcomes recurrent or endemic deformations due to the thermal cycles suffered by the assembly during stops and restarting of the tank, and d '' obtain the desired seal by avoiding any untimely leakage or freezing of liquid metal which could hinder the maneuvers of the tank Likewise to disassemble the device for cleaning or maintenance (for example changing the seals), it suffices to move the two flanges apart
Pour faciliter le démontage, il est aussi possible de prolonger la bride de liaison par une portion de goulotte fixe assujettie à la goulotte fixe proprement dite à l'aide d'un dispositif de fixation rigide (par exemple à l'aide de brides solidaires de la goulotte et de la portion de goulotte, boulonnées entre elles), étanche, facilement démontable et accessible et de faire reposer- l'ensemble (portion de goulotte fixe, bride de liaison, dispositif de serrage) sur un chariot mobile portant également le bâti d'appui du dispositif de serrage. Pour le démontage, il suffira alors de désaccoupler la goulotte fixe de la portion de goulotte et d'écarter cette dernière avec sa bride de liaison du bec mobile équipé de sa bride d'adaptation après avoir relâché le dispositif de serrage.To facilitate disassembly, it is also possible to extend the connecting flange by a portion of fixed trunking subject to the fixed trough proper using a rigid fixing device (for example using flanges integral with the trunking and the trunking portion, bolted together), watertight, easily removable and accessible and to rest the assembly (fixed trunking portion, connecting flange, clamping device) on a mobile carriage also carrying the frame support clamping device. For disassembly, it will then suffice to decouple the fixed chute from the chute portion and to separate the latter with its flange connecting the movable spout equipped with its adaptation flange after having released the clamping device.
Les brides sont généralement en acier ou fonte réfractaire; l'intérieur de la portion de goulotte fixe peut être revêtu du même produit réfractaire que celui des becs, des goulottes ou de la cuve de métal liquide.The flanges are generally made of steel or refractory cast iron; the interior of the fixed chute portion can be coated with the same refractory product as that of the spouts, the chutes or the liquid metal tank.
Le dispositif selon l'invention s'applique à la liaison de la cuve de métal liquide aussi bien avec sa goulotte de sortie qu'avec celle d'alimentation. Quand elle s'applique aux deux, ces dernières sont situées sur le même axe, comme cela a été déjà dit.The device according to the invention applies to the connection of the liquid metal tank both with its outlet chute and with that of the supply. When it applies to both, the latter are located on the same axis, as already mentioned.
L'invention concerne également les cuves de métal liquide comportant un ou plusieurs dispositifs de liaison articulés et les procédés mettant en œuvre les cuves ou les dits dispositifs selon l'invention. Les procédés sont en particulier la filtration ou le traitement par les gaz des métaux liquides comme l'aluminium, le magnésium ou leurs alliages.The invention also relates to the liquid metal tanks comprising one or more articulated connection devices and the methods implementing the tanks or the said devices according to the invention. The methods are in particular the filtration or treatment by gases of liquid metals such as aluminum, magnesium or their alloys.
La figure 1 illustre l'invention et représente une vue d'une cuve de métal liquide dont l'axe de basculement passe par la partie supérieure d'une de ses parois.Figure 1 illustrates the invention and shows a view of a liquid metal tank whose tilting axis passes through the upper part of one of its walls.
La figure 2 représente une vue de profil d'une liaison articulée en rotation montée sur une cuve de métal liquide du type de celle de la figure 1.FIG. 2 represents a profile view of a hinged link in rotation mounted on a liquid metal tank of the type of that of FIG. 1.
La figure 3 illustre une vue de profil du mode de réalisation préféré de la liaison articulée en rotation selon l'invention.FIG. 3 illustrates a side view of the preferred embodiment of the articulated link in rotation according to the invention.
La figure 1 montre l'implantation d'un trou de passage (5) pour la coulée, la vidange ou l'alimentation du métal liquide et du bec (7) le prolongeant sur une petite paroi (2) de la cuve (1). Le trou de passage (5) se trouve à la partie supérieure de ladite cuve, près d'une grande paroi (25) (vue en coupe) perpendiculaire à la petite paroi (2); l'axe de basculement (6) passe par son centre et est parallèle à ladite grande paroi (25). On voit que, grâce à cet agencement et au dispositif de liaison articulé étanche selon l'invention, il est aisément possible de vidanger complètement la cuve en la basculant dans le sens de la flèche (24), le besoin d'espace pour effectuer cette opération étant réduit au minimum.Figure 1 shows the installation of a passage hole (5) for pouring, emptying or feeding the liquid metal and the spout (7) extending it on a small wall (2) of the tank (1). The through hole (5) is located at the top of said tank, near a large wall (25) (sectional view) perpendicular to the small wall (2); the tilting axis (6) passes through its center and is parallel to said large wall (25). It can be seen that, thanks to this arrangement and to the sealed articulated connection device according to the invention, it is easily possible to completely empty the tank by tilting it in the direction of the arrow (24), the need for space to perform this operation being minimized.
Sur la figure 2 on voit en (1) une cuve de métal liquide parallelepipedique avec une petite paroi (2) présentant une légère dépouille, recouverte intérieurement d'un matériau réfractaire (2a), et un couvercle (3) également recouvert intérieurement d'un matériau réfractaire (4). A la partie supérieure de la cuve ( 1) se trouve un trou de passage (5) pour la coulée, la vidange ou l'alimentation du métal liquide. La cuve est basculante autour de l'axe de basculement (6) passant par ledit trou de passage (5). Ce dernier est prolongé par un bec mobile (7) solidaire de la cuve (1) et qui pivote avec elle; il est revêtu intérieurement d'un matériau réfractaire (8).In Figure 2 we see in (1) a parallelepipedal liquid metal tank with a small wall (2) having a slight draft, covered internally with a refractory material (2a), and a cover (3) also internally covered with a refractory material (4). At the upper part of the tank (1) there is a through hole (5) for pouring, emptying or feeding the liquid metal. The tank is tiltable around the tilting axis (6) passing through said passage hole (5). The latter is extended by a movable spout (7) integral with the tank (1) and which pivots with it; it is coated internally with a refractory material (8).
Le serrage réglable des joints (12, 13) peut être assuré par des tirants filetés (19) prenant appui sur une pièce fixe (20) solidaire d'un châssis (21), par l'intermédiaire d'un ressort (22) dont l'écrasement est réglé par des écrous.The adjustable tightening of the seals (12, 13) can be ensured by threaded tie rods (19) bearing on a fixed part (20) secured to a frame (21), by means of a spring (22) of which the crushing is regulated by nuts.
Tel qu'illustré aux figures 2 et 3, le dispositif de liaison étanche au métal liquide, articulé en rotation autour d'un l'axe (6) et permettant le basculement d'une cuve (1) de métal liquide, comprend : - une bride d'adaptation (10, 10a, 10b, 10c) assujettie à l'extrémité du bec (7, 8), centrée sur l'axe de basculement (6) et comportant une portée de joint circulaire perpendiculaire au dit axe (6) ; - une bride de liaison (15, 15a, 15b) assujettie à l'extrémité de la goulotte fixe (17, 18), centrée sur l'axe de basculement (6) et comportant une portée de joint circulaire, perpendiculaire au dit axe (6), faisant face à la précédente et coopérant avec elle ;As illustrated in FIGS. 2 and 3, the tight connection device for liquid metal, articulated in rotation around an axis (6) and allowing the tilting of a tank (1) of liquid metal, comprises: - an adapter flange (10, 10a, 10b, 10c) secured to the end of the spout (7, 8), centered on the tilting axis (6) and having a circular joint surface perpendicular to said axis (6 ); - a connecting flange (15, 15a, 15b) secured to the end of the fixed chute (17, 18), centered on the tilting axis (6) and comprising a bearing surface of a circular joint, perpendicular to said axis ( 6), facing and cooperating with the previous one;
- au moins un joint (12, 13) résistant à la chaleur et au métal liquide situé entre les deux portées ;- at least one seal (12, 13) resistant to heat and liquid metal located between the two surfaces;
- un dispositif de serrage (19, 19a, 22, 22a, 22b 22c) permettant de régler le serrage des brides (10, 10a, 10b. 10c, 15, 15a, 15b) l'une par rapport à l'autre pour assurer l'étanchéité de la liaison tout en laissant lesdites brides (10, 10a, 10b, 10c, 15. 15a, 15b) pivoter l'une par rapport à l'autre.- a tightening device (19, 19a, 22, 22a, 22b 22c) making it possible to adjust the tightening of the flanges (10, 10a, 10b. 10c, 15, 15a, 15b) relative to each other to ensure sealing the connection while leaving said flanges (10, 10a, 10b, 10c, 15. 15a, 15b) pivot relative to each other.
Le dispositif de liaison selon l'invention comprend avantageusement un dispositif de centrage (11 , l ia, 14, 14a) des brides (10, 10a, 10b, 10c, 15, 15a, 15b) l'une par rapport à l'autre. Ce dispositif de centrage peut comprendre, sur une des brides (10, 10a, 10b, 10c, 15, 15a, 15b), une protubérance (11 , l ia) cylindrique s'engageant à frottement doux sans un logement correspondant (14, 14a) situé sur l'autre bride (10, 10a, 10b, 10c, 15, 15a, 15b). Selon la variante de la figure 2, l'une des portées de joints peut se trouver à l'extrémité de la protubérance (11), l'autre portée de joint se trouvant au fond du logement (14), de façon à ce que les deux portées de joint se fassent face. Selon la variante de la figure 3, les portées de joint sont prévues à l'extrémité de protubérances spécifiques (15b, 10b) des brides (10a, 10b, 10c, 15a, 15b), lesdites portées étant disposées de façon à ce qu'elles se fassent face.The connection device according to the invention advantageously comprises a centering device (11, l ia, 14, 14a) of the flanges (10, 10a, 10b, 10c, 15, 15a, 15b) relative to each other . This centering device can comprise, on one of the flanges (10, 10a, 10b, 10c, 15, 15a, 15b), a cylindrical protuberance (11, l ia) engaging with gentle friction without a corresponding housing (14, 14a ) located on the other flange (10, 10a, 10b, 10c, 15, 15a, 15b). According to the variant of FIG. 2, one of the joint surfaces can be located at the end of the protuberance (11), the other joint surface being at the bottom of the housing (14), so that the two joint surfaces face each other. According to the variant of FIG. 3, the joint bearing surfaces are provided at the end of specific protuberances (15b, 10b) of the flanges (10a, 10b, 10c, 15a, 15b), said bearing surfaces being arranged so that they face each other.
Selon premier mode de réalisation de l'invention, le dispositif réglable de serrage comprend des tirants filetés (19) prenant appui d'une part sur une ou des pièces d'appui fixes (20), de préférence solidaires d'un châssis (21) et d'autre part sur une des brides (10, 15), par l'intermédiaire de pièces élastiques ou d'un ressort (22), des écrous permettant de régler l'écrasement et, par conséquent, la force de serrage. Selon second mode de réalisation de l' invention, le dispositif réglable de serrage comprend une protubérance (22c) sur une des brides (10, 10a, 10b, 10c, 15. 15a, 15b), une bride annulaire (22b) et des moyens d'ajustement du serrage (19a, 22a), tels que des boulons (19a) et des rondelles de type "belleville" (22a). Cette variante simplifie davantage l'ouverture et le démontage du dispositif de liaison.According to the first embodiment of the invention, the adjustable clamping device comprises threaded tie rods (19) bearing on the one hand on one or more fixed support pieces (20), preferably integral with a frame (21 ) and on the other hand on one of the flanges (10, 15), by means of elastic parts or a spring (22), nuts making it possible to adjust the crushing and, consequently, the clamping force. According to the second embodiment of the invention, the adjustable clamping device comprises a protuberance (22c) on one of the flanges (10, 10a, 10b, 10c, 15. 15a, 15b), an annular flange (22b) and means tightening adjustment (19a, 22a), such as bolts (19a) and "belleville" type washers (22a). This variant further simplifies the opening and dismantling of the connection device.
Le bec (7) peut comporter à son extrémité une contre bride (9) sur laquelle est fixé de façon étanche la bride d'adaptation (10) comportant une protubérance (11) cylindrique. Selon une variante de l' invention, sur la portée de joint située à l'extrémité de ladite protubérance (11) est placé le joint (12) de préférence à base de graphite. Ce joint (12) vient s'appliquer contre le joint correspondant (13) placé sur la portée de joint située au fond du logement (14) cylindrique faisant partie de la bride de liaison (15) et coopérant avec la protubérance (1 1) pour centrer le dispositif. Selon une autre variante de l'invention, les brides (10, 10a, 10b, 10c, 15, 15a, 15b) peuvent comporter plusieurs pièces distinctes qui sont de préférence fixées les unes aux autres, par exemple, à l'aide de pions d'arrêt en rotation (26, 27) ou de moyens de fixation (28). Les pions d'arrêt en rotation (26, 27) peuvent être soudés aux brides (10b, 15b) correspondantes et des logements spécifiques prévus dans les brides (10a, 15a) correspondantes.The spout (7) may comprise at its end a counter flange (9) on which is tightly fixed the adapter flange (10) comprising a cylindrical protuberance (11). According to a variant of the invention, on the joint surface located at the end of said protuberance (11) is placed the seal (12) preferably based on graphite. This seal (12) is applied against the corresponding seal (13) placed on the seal surface located at the bottom of the cylindrical housing (14) forming part of the connecting flange (15) and cooperating with the protuberance (1 1) to center the device. According to another variant of the invention, the flanges (10, 10a, 10b, 10c, 15, 15a, 15b) may comprise several separate parts which are preferably fixed to each other, for example, using pins stop in rotation (26, 27) or fixing means (28). The rotating stop pins (26, 27) can be welded to the corresponding flanges (10b, 15b) and specific housings provided in the corresponding flanges (10a, 15a).
La bride de liaison (15, 15a, 15b) est fixée à l'aide d'une contre bride (16) sur une portion de goulotte fixe (17) amovible, située dans le prolongement du corps principal de la goulotte fixe (18). En (23) on voit un dispositif d'accouplement étanche entre le corps principal (18) et la portion amovible (17) de la goulotte fixe.The connecting flange (15, 15a, 15b) is fixed by means of a counter flange (16) on a portion of fixed trough (17) removable, located in the extension of the main body of the fixed trough (18) . In (23) we see a sealed coupling device between the main body (18) and the removable portion (17) of the fixed chute.
Il peut être avantageux de prévoir un joint (29), résistant à la chaleur et au métal liquide, entre la bride de liaison (15, 15a, 15b) et la contre bride (16). It may be advantageous to provide a seal (29), resistant to heat and to liquid metal, between the connecting flange (15, 15a, 15b) and the counter flange (16).

Claims

REVENDICATIONS
1. Cuve (1) de traitement de métal liquide basculante autour d'un axe (6), alimentée par une goulotte fixe et déversant ledit métal liquide dans une goulotte fixe d'évacuation (17, 18), la dite cuve comportant au moins un trou de passage (5) pour l'alimentation, la sortie ou la vidange du métal liquide pratiqué dans une de ses parois (2) et prolongé par un bec dit mobile (7, 8) solidaire de la cuve, caractérisée en ce qu'au moins l'axe de la goulotte fixe d'évacuation (17, 18) est confondu avec l'axe de basculement (6).1. Tank (1) for processing liquid metal tilting about an axis (6), fed by a fixed chute and pouring said liquid metal into a fixed discharge chute (17, 18), said tank comprising at least a through hole (5) for feeding, leaving or discharging the liquid metal formed in one of its walls (2) and extended by a so-called movable spout (7, 8) integral with the tank, characterized in that 'at least the axis of the fixed discharge chute (17, 18) coincides with the tilting axis (6).
2. Cuve selon la revendication 1 , caractérisée en ce que la cuve (1) est parallelepipedique rectangle, l'axe de basculement (6) horizontal étant parallèle à sa grande longueur, et est soit déporté à l'extérieur de la cuve (1) soit de préférence situé à sa partie supérieure.2. Tank according to claim 1, characterized in that the tank (1) is a rectangularepipedic rectangle, the tilting axis (6) horizontal being parallel to its great length, and is either offset outside the tank (1 ) is preferably located at its upper part.
3. Cuve selon l'une quelconque des revendications 1 ou 2, caractérisée en ce que l'angle de basculement est compris entre 30° et 90° .3. Tank according to any one of claims 1 or 2, characterized in that the tilting angle is between 30 ° and 90 °.
4. Cuve selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'au moins une partie d'extrémité de la goulotte fixe (17, 18) et du bec mobile (7, 8) ont une section droite circulaire et sont reliés par un dispositif articulé en rotation autour de l'axe de basculement (6) étanche au métal liquide.4. Tank according to any one of claims 1 to 3, characterized in that at least one end portion of the fixed chute (17, 18) and the movable spout (7, 8) have a circular cross section and are connected by a device articulated in rotation about the tilting axis (6) tight to the liquid metal.
5. Dispositif de liaison étanche au métal liquide, articulé en rotation autour d'un axe (6) permettant en particulier le basculement d'une cuve (1) de métal liquide, telle que décrite dans l'une des revendications 1 à 4, autour de l'axe (6), entre d'une part un bec dit mobile (7, 8) solidaire de la cuve (1), alignée sur ledit axe (6) et d'autre part une goulotte fixe (17, 18) destinée à la circulation de métal liquide, également alignée sur ledit axe (6), les dits bec mobile (7, 8) et goulotte fixe (17, 18) ayant chacun au moins une partie d'extrémité à section droite circulaire, caractérisé en ce qu'il comprend :5. A sealed connection device for liquid metal, articulated in rotation about an axis (6) allowing in particular the tilting of a tank (1) of liquid metal, as described in one of claims 1 to 4, around the axis (6), between on the one hand a so-called movable spout (7, 8) integral with the tank (1), aligned on said axis (6) and on the other hand a fixed chute (17, 18 ) intended for the circulation of liquid metal, also aligned on said axis (6), the so-called movable spout (7, 8) and fixed chute (17, 18) each having at least one end portion of circular cross section, characterized in that it comprises:
- une bride d'adaptation (10, 10a, 10b, 10c) assujettie à l'extrémité du bec (7, 8), centrée sur l'axe de basculement (6) et comportant une portée de joint circulaire perpendiculaire audit axe (6) ;- an adaptation flange (10, 10a, 10b, 10c) secured to the end of the spout (7, 8), centered on the tilting axis (6) and comprising a bearing surface of a circular joint perpendicular to said axis (6 );
- une bride de liaison (15, 15a, 15b) assujettie à l'extrémité de la goulotte fixe (17, 18), centrée sur l'axe de basculement (6) et comportant une portée de joint circulaire, perpendiculaire audit axe (6), faisant face à la précédente et coopérant avec elle ; - au moins un joint (12, 13) résistant à la chaleur et au métal liquide situé entre les deux portées ;- a connecting flange (15, 15a, 15b) secured to the end of the fixed chute (17, 18), centered on the tilting axis (6) and comprising a bearing surface of a circular joint, perpendicular to said axis (6 ), facing and cooperating with the previous one; - at least one seal (12, 13) resistant to heat and liquid metal located between the two surfaces;
- un dispositif de serrage (19, 19a, 22, 22a, 22b, 22c), prenant éventuellement appui sur une pièce fixe (20), permettant de régler le serrage des brides (10, 10a, 10b, 10c, 15, 15a, 15b) l'une par rapport à l'autre pour assurer l'étanchéité de la liaison tout en laissant lesdites deux brides (10, 10a, 10b, 10c, 15, 15a, 15b) pivoter l'une par rapport à l'autre.- a tightening device (19, 19a, 22, 22a, 22b, 22c), possibly supported by a fixed part (20), making it possible to adjust the tightening of the flanges (10, 10a, 10b, 10c, 15, 15a, 15b) relative to each other to seal the connection while leaving said two flanges (10, 10a, 10b, 10c, 15, 15a, 15b) pivot relative to each other .
6. Dispositif selon la revendication 5 caractérisé en ce que les brides (10, 10a, 10b, 10c, 15, 15a, 15b) comportent un dispositif de centrage (11 , l ia, 14, 14a) de l'une par rapport à l'autre.6. Device according to claim 5 characterized in that the flanges (10, 10a, 10b, 10c, 15, 15a, 15b) comprise a centering device (11, l ia, 14, 14a) of one relative to the other.
7. Dispositif selon la revendication 6, caractérisé en ce que le dispositif de centrage comporte sur une des brides (10, 10a, 10b, 10c, 15, 15a, 15b) une protubérance (11 , l ia) cylindrique s 'engageant à frottement doux dans un logement correspondant (14, 14a), situé sur l'autre bride (10, 10a, 10b, 10c, 15, 15a, 15b).7. Device according to claim 6, characterized in that the centering device comprises on one of the flanges (10, 10a, 10b, 10c, 15, 15a, 15b) a protuberance (11, l ia) cylindrical engaging in friction soft in a corresponding housing (14, 14a), located on the other flange (10, 10a, 10b, 10c, 15, 15a, 15b).
8. Dispositif selon la revendication 7, caractérisé en ce qu'une portée de joint se trouve à l'extrémité de la protubérance cylindrique (11) et une autre portée de joint se trouve au fond du logement (14), de façon à ce que les deux portées de joint se fassent face.8. Device according to claim 7, characterized in that a joint surface is located at the end of the cylindrical protuberance (11) and another surface of gasket is located at the bottom of the housing (14), so that the two gasket surfaces face each other.
9. Dispositif selon la revendication 7, caractérisé en ce qu'il comporte deux protubérances spécifiques (15b, 10b) des brides (10a, 10b, 10c, 15a, 15b) à l'extrémité de chacune desquelles se trouve une portée de joint disposée de façon à ce que les deux portées de joint se fassent face.9. Device according to claim 7, characterized in that it comprises two specific protrusions (15b, 10b) of the flanges (10a, 10b, 10c, 15a, 15b) at the end of each of which is a seal bearing surface disposed so that the two joint surfaces face each other.
10. Dispositif selon l'une quelconque des revendications 5 à 9, caractérisé en ce qu'il comporte deux joints (12, 13), un sur chaque portée.10. Device according to any one of claims 5 to 9, characterized in that it comprises two seals (12, 13), one on each bearing.
11. Dispositif selon l'une quelconque des revendications 5 à 10, caractérisé en ce que les brides (10, 10a, 10b, 10c, 15, 15a, 15b) sont en acier ou fonte réfractaire et/ou que les joints (12, 13) sont à base de graphite.11. Device according to any one of claims 5 to 10, characterized in that the flanges (10, 10a, 10b, 10c, 15, 15a, 15b) are made of steel or refractory cast iron and / or that the seals (12, 13) are based on graphite.
12. Dispositif selon l'une quelconque des revendications 5 à 11 , caractérisé en ce que le dispositif réglable de serrage comprend des tirants filetés (19) prenant appui d'une part sur une ou des pièces d'appui fixes (20), de préférence solidaires d'un châssis (21) et d'autre part sur une des brides (10, 15), par l'intermédiaire de pièces élastiques (22), des écrous permettant de régler la force de serrage.12. Device according to any one of claims 5 to 11, characterized in that the adjustable clamping device comprises threaded tie rods (19) bearing on the one hand on one or more fixed support pieces (20), preferably integral with a frame (21) and on the other hand on one of the flanges (10, 15), by means of elastic parts (22), nuts making it possible to adjust the clamping force.
13. Dispositif selon l'une des revendications 5 à 11 , caractérisé en ce le dispositif réglable de serrage comprend une protubérance (22c) sur une des brides (10, 10a, 10b, 10c, 15, 15a, 15b), une bride annulaire (22b) et des moyens d'ajustement du serrage (19a, 22a), tels que des boulons (19a) et des rondelles de type "belleville"13. Device according to one of claims 5 to 11, characterized in that the adjustable clamping device comprises a protrusion (22c) on one of the flanges (10, 10a, 10b, 10c, 15, 15a, 15b), an annular flange (22b) and tightening adjustment means (19a, 22a), such as bolts (19a) and "belleville" type washers
(22a).(22a).
14. Dispositif selon l'une quelconque des revendications 5 à 13 , caractérisé en ce que la goulotte fixe comporte une portion de goulotte (17) fixe amovible. 14. Device according to any one of claims 5 to 13, characterized in that the fixed chute comprises a removable portion of chute (17).
15. Procédé utilisant la cuve de l'une quelconque des revendications 1 à 4 ou mettant en œuvre le dispositif de l'une quelconque des revendications 5 à 14.15. Method using the tank of any one of claims 1 to 4 or implementing the device of any one of claims 5 to 14.
16. Procédé selon la revendication 15, caractérisé en ce qu'il est utilisé pour le traitement par les gaz ou la filtration de l'aluminium, du magnésium ou de leurs alliages liquides. 16. The method of claim 15, characterized in that it is used for the treatment by gases or filtration of aluminum, magnesium or their liquid alloys.
EP99949050A 1998-10-15 1999-10-14 Tilting tank for processing liquid metal and device for sealed connection with fixed chute Expired - Lifetime EP1133372B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9813088A FR2784608B1 (en) 1998-10-15 1998-10-15 TILTING LIQUID METAL PROCESSING TANK AND ITS SEALED CONNECTION DEVICE WITH A FIXED CHUTE
FR9813088 1998-10-15
PCT/FR1999/002491 WO2000021701A1 (en) 1998-10-15 1999-10-14 Tilting tank for processing liquid metal and device for sealed connection with fixed chute

Publications (2)

Publication Number Publication Date
EP1133372A1 true EP1133372A1 (en) 2001-09-19
EP1133372B1 EP1133372B1 (en) 2002-12-18

Family

ID=9531733

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99949050A Expired - Lifetime EP1133372B1 (en) 1998-10-15 1999-10-14 Tilting tank for processing liquid metal and device for sealed connection with fixed chute

Country Status (9)

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US (1) US6576184B1 (en)
EP (1) EP1133372B1 (en)
AT (1) ATE229860T1 (en)
AU (1) AU6207199A (en)
BR (1) BR9914503A (en)
DE (1) DE69904646T2 (en)
ES (1) ES2188252T3 (en)
FR (1) FR2784608B1 (en)
WO (1) WO2000021701A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7407068B2 (en) 2004-01-21 2008-08-05 Klingensmith Marshall A Compliant fill tube assembly, fill tube therefor and method of use
BE1019269A3 (en) 2010-04-02 2012-05-08 Belgoprocess N V TIPABLE OVEN.
KR102694378B1 (en) 2018-01-23 2024-08-13 인덕터썸코포레이션 Sealed inclined injection electric induction furnace for reactive alloys and metals

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Publication number Priority date Publication date Assignee Title
FR1004268A (en) * 1947-03-27 1952-03-27 Process for refining, degassing and casting metals and alloys by a controlled atmosphere and products obtained
GB1116275A (en) * 1966-05-17 1968-06-06 Metallurgie Hoboken Improvements in and relating to rotary furnaces
US3684316A (en) * 1970-09-18 1972-08-15 Sherritt Gordon Mines Ltd Rotary joint
DE2426546A1 (en) * 1974-05-31 1975-12-11 Kloeckner Humboldt Deutz Ag DEVICE FOR GAS-TIGHT CONNECTION OF TWO PIPES WITH EACH OTHER
GB2046386B (en) * 1979-04-12 1983-02-23 Aeroquip Ltd Liquid-tight rotary pipe joint
US4324392A (en) * 1980-02-04 1982-04-13 Sandmold Systems, Inc. Molten metal pouring device
US4392888A (en) * 1982-01-07 1983-07-12 Aluminum Company Of America Metal treatment system
US5076344A (en) * 1989-03-07 1991-12-31 Aluminum Company Of America Die-casting process and equipment

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Title
See references of WO0021701A1 *

Also Published As

Publication number Publication date
DE69904646T2 (en) 2003-08-21
US6576184B1 (en) 2003-06-10
BR9914503A (en) 2001-06-26
EP1133372B1 (en) 2002-12-18
FR2784608B1 (en) 2000-12-08
DE69904646D1 (en) 2003-01-30
ES2188252T3 (en) 2003-06-16
ATE229860T1 (en) 2003-01-15
AU6207199A (en) 2000-05-01
FR2784608A1 (en) 2000-04-21
WO2000021701A1 (en) 2000-04-20

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