EP0302215B1 - Vanne rotative pour conteneur métallurgique ainsi que rotor et stator pour une telle vanne - Google Patents

Vanne rotative pour conteneur métallurgique ainsi que rotor et stator pour une telle vanne Download PDF

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Publication number
EP0302215B1
EP0302215B1 EP88110276A EP88110276A EP0302215B1 EP 0302215 B1 EP0302215 B1 EP 0302215B1 EP 88110276 A EP88110276 A EP 88110276A EP 88110276 A EP88110276 A EP 88110276A EP 0302215 B1 EP0302215 B1 EP 0302215B1
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EP
European Patent Office
Prior art keywords
rotor
stator
rotary valve
vessel
refractory
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.)
Expired - Lifetime
Application number
EP88110276A
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German (de)
English (en)
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EP0302215A1 (fr
Inventor
Ernst Lührsen
Ullrich Hintzen
Raimund Brückner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Didier Werke AG
Original Assignee
Didier Werke AG
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
Priority claimed from DE19873725637 external-priority patent/DE3725637A1/de
Priority claimed from DE19883805070 external-priority patent/DE3805070A1/de
Priority claimed from DE19883819784 external-priority patent/DE3819784A1/de
Application filed by Didier Werke AG filed Critical Didier Werke AG
Priority to AT88110276T priority Critical patent/ATE83957T1/de
Publication of EP0302215A1 publication Critical patent/EP0302215A1/fr
Application granted granted Critical
Publication of EP0302215B1 publication Critical patent/EP0302215B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B22D41/08—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like for bottom pouring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures

Definitions

  • the invention relates to a rotary closure for a substantially vertical tapping of molten metal from a metallurgical vessel with a rotationally symmetrical, serving as a closure body refractory rotor which is rotatable about an essentially horizontal axis in a refractory stator having an outflow channel, the rotor being one by rotating the rotor with respect to the stator opening and closing flow channel, the outlet opening is arranged in the outer surface of the rotor.
  • Such a twist lock is known for example from Fig. 1 of DE-PS 33 42 836.
  • the known twist lock is partially installed in a cavity of the refractory lining of the container bottom.
  • This cavity is lined with a refractory housing formed from refractory shaped stones and a perforated plate, into which the twist lock is inserted and thus partially mortared.
  • this refractory housing also has to be laboriously repaired when the screw cap is repaired, the housing forms a heat-insulating shield against molten metal on the one hand, and on the other hand the screw cap is exposed to a certain amount of air cooling, which increases the risk of the screw cap freezing.
  • This risk of freezing is even greater in the rotary lock according to FIG. 3 of DE-PS 33 42 836, since there the rotary lock serves to close off a pipeline. Furthermore, the rotor cannot be replaced without the stator.
  • closure body with the axial through hole must also be made of refractory material, the transmission of torques is possible with a sufficiently tight fit and different thermal expansions of the parts in the seat of the stator kaim.
  • the thin-walledness of the rotor required by the flow channel guide of the rotor also leads to rapid wear.
  • stator and rotor also presupposes an arrangement of the screw cap and thus its actuation in the immediate vicinity of the pouring jet, that is to say in a region of very high temperatures.
  • inlet opening of the flow channel is arranged in the end face of the conical rotor leads to rapid wear of the rotor, especially in one corner area in the immediate vicinity of the flow channel.
  • the twist lock according to AT-PS 357 283 is arranged in the bottom of the vessel in such a way that the rotor cannot be replaced by the bottom of the vessel without the stator.
  • the rotor is disadvantageously subjected to tension and, if it is arranged with a vertical axis of rotation, can only be driven from the floor in the immediate vicinity of the pouring spout, which is disadvantageous both for reasons of space and because of the temperature conditions there for driving the rotor .
  • the known rotary closure can also be arranged with a horizontal spout on the side wall of the vessel, with the horizontal axis of rotation of the rotor. This also has the same disadvantages as with the arrangement with a vertical rotor axis.
  • the twist lock according to AT-PS 165 292 is for the most part outside the inside of the vessel, namely below the bottom of the vessel. As a result, the risk of freezing is relatively great and the actuating unit is in relatively close proximity to the pouring stream. Due to the design, the rotor can only be replaced together with the stator and can only be operated from below, since the axis of rotation is vertical.
  • the twist lock according to GB-PS 1 177 262 is not in or on the vessel wall lining, but rather is actuated from below below the vessel bottom.
  • the rotor the flow channel of which is designed as a bare channel, has a relatively complicated shape, which leads to rapid wear.
  • the rotor cannot be exchanged through the bottom of the container without the stator, but both only from the inside of the container.
  • the twist lock according to US-PS 36 51 998 consists essentially of two cylindrical, mating tubular bodies with a vertical axis, which penetrate the bottom of the vessel.
  • the tubular body is provided with a special sealing arrangement.
  • the actuation must also take place from the immediate vicinity of the pouring stream. Training as Tubular body with a relatively thin wall leads to rapid wear.
  • inflow actuator for a mold level control of a continuous casting plant in order to avoid clogging of an outflow opening of the melting supply vessel, at least two concentrically arranged, vertically arranged, projecting and mutually movable tubes with openings for the melt passage are used .
  • the breakthroughs are more or less aligned, which results in a more or less large outflow opening for the melt.
  • One tube is arranged vertically fixed in the container bottom, while the other tube is rotatable and axially adjustable.
  • a relatively complex actuation arrangement is required, which has to act from above the molten metal.
  • the replacement of the parts is cumbersome, which is disadvantageous given the high wear to which such wear parts are subject.
  • a device for controlling the flow rate of a tundish for continuous casting which, for the purpose of reducing the oxidation of the molten steel and improving the steel quality, the stator fixed in the tank bottom has a vertical outflow channel in which lateral outflow openings open at a short distance above the tank bottom.
  • the outflow rate is carried out with the aid of a plunger which is guided vertically in the outflow duct of the stator and which can be actuated from above the molten metal for vertical adjustment.
  • a tubular closure body similar to the solution according to DE-PS 35 40 202 can also be used.
  • This closure device therefore cannot do without actuation from above the molten metal in the vessel.
  • the wear parts rotor and stator can also only be replaced from above the metal melting vessel.
  • a closure body which can be actuated from below the container base is guided in a vertically adjustable manner in a stator of the container base.
  • the closure body has a vertical flow channel, which is divided up into two transverse bores. In the open position, the inlet openings of these transverse bores are located above the surface of the container bottom in the molten metal, in the closed position of the closure body, however, inside the rotor. It must be operated from below the bottom of the container, i.e. in the immediate vicinity of the pouring jet.
  • the stator and rotor are arranged largely below the bottom of the container, so that there is a considerable risk of the metal melt freezing.
  • the actuation of the rotor, the axis of rotation of which is perpendicular to the vertical outflow channel of the stator and the flow channel of which is perpendicular to this axis of rotation, must also take place below the bottom of the container in the immediate vicinity of the pouring jet.
  • stator and the rotor are arranged in the interior of the vessel in and / or on the refractory lining of the vessel wall and, if appropriate, the lining of the vessel bottom in the area of the molten metal.
  • the molten metal can be removed vertically downwards from the inside of the vessel after a very short flow path with the aid of the stator.
  • the rotor itself can be relatively compact, so that its flow channel is also correspondingly short. Since the functional parts of the screw cap guiding the molten metal are all arranged in the interior of the vessel in the molten metal or in the immediate vicinity of the molten metal, these are kept at the required high temperature by the molten metal, so that the risk of freezing is reduced. Air access is excluded. Since the vessel lining can be replaced in some areas by the functional parts of the twist lock itself, the construction effort is reduced compared to known metallurgical vessels with twist lock.
  • the twist lock can be actuated from the side, so that the vertical pouring is not hindered.
  • the path for the introduction of force and the effort required to actuate the rotor are relatively small, so that the operating units can be designed to be correspondingly weak and compact. This promotes the economical and reliable operation of the twist lock according to the invention.
  • the exchange of rotor and stator is also easily possible due to the special arrangement of these parts to the side.
  • the rotor is pressed from the outside with a conical section into a correspondingly conical seat of the stator, the rotor can be exchanged quickly with the possibility of achieving the tightness between the stator and the rotor by forces applied from the outside .
  • the outer surface of the rotor is circular-cylindrical and is accommodated in a correspondingly circular-cylindrical seat of the stator, such pressing forces are not necessary, but the desired low design effort and the good accessibility of the wearing parts of the twist lock are retained.
  • the rotor in the stator - in addition to the rotatability - can also be axially displaceable. This makes it possible to achieve the opening and closing function or control function of the rotary lock either by rotating or axially displacing the rotor or both movements. If both movement options exist, the pouring jet will preferably be controlled by rotating the rotor and the complete closing and opening by axially displacing the rotor. Different wear edges are stressed, so that the rotor has a longer service life than if it were only rotatable or only axially displaceable.
  • the inlet opening of the flow channel of the rotor is also arranged in its conical or cylindrical outer surface.
  • the flow channel of the rotor preferably runs essentially perpendicular to the axis of rotation, whereby easy manufacture of the rotor is guaranteed. In the case of special spatial or casting conditions, it can also be expedient to have the flow channel of the rotor run at an angle.
  • the inlet opening of the flow channel of the rotor is arranged in an end face of the rotor facing the interior of the vessel. It is hereby achieved that the major part of the rotor, namely that part which has the horizontal section of the flow channel, above the top of the vessel bottom lining, i.e. be arranged thermally favorable in relation to the molten metal and yet the entire molten metal can flow out of the interior of the vessel practically without restriction.
  • the end face of the rotor having the inlet opening of the flow channel of the rotor is preferably essentially perpendicular to the axis of rotation of the rotor, so that the position of the inlet opening does not change when the pouring jet is controlled by rotating the outlet opening of the flow channel of the rotor relative to the outlet opening of the outlet channel of the stator .
  • stator as a whole or at least part of it can be moved through a recess in the bottom of the vessel and / or through the recess in the wall of the vessel and can therefore be replaced.
  • stator together with the rotor can be displaced through the recess in the bottom of the vessel and / or the recess in the wall of the vessel and can therefore be exchanged, so that when these two parts fit into one another when worn, they quickly move against a new stator / rotor -Unit can be replaced.
  • the stator is arranged in the transition region between the vessel wall lining and the vessel bottom lining and the recess in the vessel bottom for the vertical tapping of the molten metal and the recess in the side vessel wall for actuation of the rotor are as close as possible to one another, the rotor can be driven in a simple construction from the vessel wall by a drive rod which is guided through the recess in the vessel wall.
  • a structurally simple actuation of the rotor is possible if it is held in the seat of the stator by means of an actuating head, the actuating head interacting positively from the outside with the drive-side end of the rotor in order to also serve as a driving device. Furthermore, the rotor should only be rotated, but not axially displaced, the actuating head preferably engages only loosely on the drive side in the rotor, so that it can also be easily and axially removed again to ensure good accessibility of the rotor.
  • the rotor is preferably connected to the drive of the rotor via a universal joint according to a further feature of the invention.
  • the rotor can be connected to the drive via an elastic coupling in order to compensate for existing axis displacements or offsets.
  • the drive and the drive transmission means acting on the rotor are held on a support device which can be swiveled away from the vessel wall, particularly easy accessibility of the rotor and possibly also of the stator is ensured. Since in particular the rotor, which is also used for throttling the pouring jet, is subject to wear, the easy interchangeability is particularly advantageous despite the lateral drive of the rotor.
  • the invented twist lock can be further improved in terms of reliable function and a simple and quick replacement of the wearing parts in that the stator with its two ends is passed through two opposite side walls of the vessel and the rotor can be exchanged in the push-through.
  • the outer surface of the rotor interacts with the circular cylindrical inner surface of the stator serving as a sealing seat.
  • the rotor is therefore both rotatable and axially displaceable in the stator.
  • the rotary movement is used to open and close the rotor's flow channel, the axial displacement primarily to replace the rotor in the push-through from the stator ends.
  • the flow channel of the rotor can also be opened and closed by means of axial displacement. No contact forces are required for the seal between the rotor and stator.
  • the rotor can be moved from a lateral end of the stator, which is located in a vessel side wall and is therefore easily accessible, into its position, in which the flow channel and the outlet channel can be made more or less coincident by rotation, but also by axial displacement.
  • the drive for rotation and / or axial displacement starts at one end of the rotor, which for this purpose can also protrude laterally from the stator.
  • the entire closure arrangement of the stator and rotor also lies directly in the molten metal or in the immediate vicinity thereof, so that the risk of freezing is low.
  • stator is cylindrical in shape, since then uniform thermal conditions are established in the rotary closure due to the uniform wall thickness of the stator, which leads to the least possible stress on the refractory wear parts of the rotary closure with a further reduced risk of freezing.
  • the two channels can also be developed in special cases, e.g. if the molten metal is to be drained from the transition area between the vessel bottom and the vessel side wall.
  • a plurality of rotor parts which are adjacent to one another on the end faces are interlockingly interlocking, each having at least one flow channel.
  • the rotor parts can be relatively short in relation to the overall rotor and therefore easy to manufacture, transport, assemble and replace. Due to the interlocking on the end face by means of tongue and groove arrangements, only the respective axially outermost rotor part needs to be driven from one end of the stator on the side wall of the vessel, so that the other rotor elements rotate or move synchronously.
  • the tongue and groove arrangements also ensure the correct rotational position of the rotor elements relative to one another.
  • stator in that it consists of a plurality of adjoining ends, e.g. is assembled with tongue-and-groove arrangements with interlocking interlocking stator parts.
  • the tongue and groove arrangements serve to mutually lock the stator parts.
  • stator or a part or an extension thereof can be designed as an immersion nozzle with a nozzle tube.
  • the rotor Since at least the rotor can be easily replaced, a good seal of the rotor with respect to the stator can be achieved in that the rotor is made of relatively soft, wear-resistant material and the stator is made of relatively hard, wear-resistant refractory material.
  • the stator can also be exchanged through the lateral vessel wall or the lower vessel bottom, the situation can also be reversed.
  • the refractory material of the rotor and / or the stator can at least on the stator and / or the rotor facing surface (s) carbon, graphite or the like.
  • Permanent lubricant contain.
  • a sliding sleeve arranged between these two rotary closure parts can also consist of such material which ensures permanent lubrication.
  • the refractory material of the rotor and / or the stator contains ceramic fibers or ceramic fibers and fibers made of carbon or graphite.
  • the invention also relates to a refractory rotor for a rotary closure of the type explained in more detail above. It is essentially distinguished according to the invention in that it has a e.g. has a recess formed as a transverse slot for the positive engagement of an actuating head which can be actuated by a drive. This allows the drive connection to be established quickly when the rotor and / or the stator are replaced.
  • the rotor has at least one flow channel, the inlet opening and outlet opening of which lie in a conical or circular-cylindrical outer surface.
  • the inlet opening of the at least one flow channel can also be arranged in an end face which is substantially perpendicular to the axis of rotation.
  • the invention also relates to a refractory stator for a twist lock of the type previously discussed.
  • this stator is essentially characterized in that it has at least one outflow channel which passes through a circular cylindrical recess for receiving a rotor.
  • the rotor and / or stator can consist of carbon or graphite or of carbon-containing refractory concrete.
  • the vessel 1 is arranged in the angular range between a refractory vessel bottom lining 2 and a refractory vessel wall lining 3 as a component of the refractory lining of a metallurgical vessel in the area of the molten metal.
  • the vessel bottom lining 2 protects a metal vessel bottom 33 and the vessel wall lining 3 protects a vessel wall 34.
  • the vessel bottom 33 has a recess 20 for tapping the molten metal downward, while the metal lateral vessel wall 34 has a recess 25 for the lateral accessibility and drive capability of the screw cap 1 .
  • the refractory bottom and side wall lining 2, 3 is therefore replaced in the area of the twist lock 1 by its parts.
  • the rotary lock 1 has a rotor 4, which is equipped with a conical section and serves as a locking body, with which it is pressed into a correspondingly conical seat 17 of a stator 6.
  • the stator 6 consists of two parts, one part of the stator 6 has a substantially vertical outflow channel 5; its downward extension is passed in one piece through the metal vessel bottom 2 as pouring spout 10. The stator 6 thus simultaneously forms an immersion nozzle.
  • a laterally arranged part 6 'of the stator 6 is hollow cone for receiving the drive end of the rotor 4.
  • the rotor 4 has 1 shows a straight flow channel 7, which is aligned with the outflow channel 5 of the stator 6 in the rotational position (open position) shown in FIG. 1.
  • an actuating head 18 engages the rotor 4 for its rotary drive about an essentially horizontal axis A, which engages with a strip-shaped projection 23 in a recess of the closure body 4 designed as a transverse slot 24. This enables torque transmission.
  • the actuating head 18 overlaps the drive-side end of the rotor 4 with an annular flange 25.
  • the drive shaft 11 of a drive 20 connects to the actuating head 18 via a universal joint 19.
  • the actuating head 18 is pressed in the direction of the stator 6 and thus the rotor 4 with its conical section into the corresponding conical seat 17 of the stator 6 by means of a spring assembly 12 and via an axial bearing acting on the drive shaft 11.
  • stator 6 While in the embodiment of FIG. 1, the stator 6 with the one-piece pouring tube 10 from the interior 8 of the vessel intended for receiving the molten metal into the vessel bottom lining 2 and the lateral part 6 'of the stator 6 through the vessel wall 34 into the vessel wall lining 3 2, the stator 6 in the embodiment according to FIG.
  • the pouring spout 10 which can be formed in two parts from the two parts 10a and 10b, for example, is attached from below through a recess in the metal vessel base 2 to the outlet opening 13 of the outflow channel 5 of the stator 6 and held there by means of a tensioning device 28.
  • the joint 29 between the stator 6 and the independent pouring pipe 10 is sealed by pressing in a sealing compound via a connecting line 30 in a space surrounding the joint 29, in which the conical head part of the pouring pipe 10 lies.
  • the stator 6 is also slightly wedge-shaped in order to facilitate replacement through the lateral vessel wall 34.
  • the embodiment of the twist lock 1 according to FIG. 3 differs from that according to FIG. 2 essentially in that the flow channel 7 of the rotor 4 does not run straight but in a corner, so that the inlet opening 14 'of the rotor 4 in the molten metal end face of the rotor 4 lies, while the outlet opening 15 of the rotor 4 is still in its outer surface.
  • the outflow channel 5 of the stator 6 is practically formed only by a section which opens into the outlet opening 13.
  • a sliding or wear sleeve 9 is inserted between the tapered section of the rotor 4 and the corresponding tapered seat 17 of the stator 6.
  • the stator 6 also has an outer flange portion 32 which bears on the outside of the metal vessel wall 34 and on which the plate-shaped part of the carrier device 22 acts from the outside in the closed position in order to hold the stator 6 securely in place.
  • the rotor 4 is spherical at its end remote from the drive 20 and the seat 17 of the stator 6 is adapted accordingly.
  • the inlet opening 14 and outlet opening 15 of the rotor 4 are arranged in the outer surface of the rotor 4.
  • the flow channel 7 of the rotor 4 is, however, slightly angled in this case, so that the outlet opening 13 of the outlet channel 5 of the stator 6 is essentially downward, but the inlet opening 16 of the outlet channel 5 of the stator 6 is almost horizontally to the side.
  • Stator 6 and pouring tube 10 are separate parts here as well.
  • the stator 6 is again slightly wedge-shaped and has a flange section 32 at its outer end as in the embodiment according to FIG. 3
  • the vessel bottom lining 2 protects a metal vessel bottom 33 and the vessel bottom lining 3 protects one metal vessel wall 34.
  • the refractory bottom and side wall linings 2, 3 are thus replaced in the area of the twist lock 1 by its parts.
  • the lower vessel bottom 33 has a recess 50 for tapping the molten metal downwards, while the lateral vessel wall 34 has a recess 55 for the lateral accessibility and driveability of the screw cap 1.
  • the rotary lock 1 has a rotor 4, which is equipped with a cylindrical outer surface 35 and serves as a locking body, with which it cooperates in a sealing manner with a corresponding cylindrical seat 17 of a stator 6.
  • the stator 6 tapers towards the interior 8 of the vessel. It can be set into the working position shown in FIG. 1 both through the recess 50 in the vessel bottom 33 and through the recess 55 in the vessel wall 34.
  • the stator 6 has an essentially vertical outflow channel 5 with an inlet opening 16 extending from the interior 8 of the vessel.
  • the outlet opening 13 of the outflow channel 5 of the stator 6 is followed by a spout tube 10, which in this case is designed as a separate component, with an essentially vertical outflow channel 36.
  • the pouring pipe 10 is thus in the upper region in the recess 50 of the vessel bottom 33.
  • the pouring tube 10 is held on the vessel bottom 33 by means of clamping devices 28.
  • the joint 29 between the stator 6 and the pouring pipe 10 takes place by pressing a sealing compound through a connecting line 30 into a space 31 surrounding the joint 29, in which the conical head part of the pouring pipe 10 lies.
  • an essentially hollow cylindrical holding part 62 adjoins the stator 6, which can also consist of refractory material. It serves to accommodate drive elements 11, 18, 19 for the rotor 4 with the cylindrical lateral surface 35 accommodated in the cylindrical seat 17 of the stator 6.
  • the rotor 4 has a straight flow channel 7 running perpendicular to the axis of rotation A of the rotor 4 , whose inlet opening 14 and outlet opening 15 each in the cylindrical Shell surface 35 lie. The flow channel 7 is aligned in the rotational position shown in FIG. 1 (open position) with the outflow channel 5 of the stator 6.
  • the rotor 4 becomes in the open position continuous, essentially vertical and straight molten metal flow for a vertical tapping guaranteed.
  • the cylindrical rotor 4 can be seen, like the stator 6 and the at least slightly conical holding part 62, exchangeable through the recess 55 of the vessel wall 34, but also together with the stator 6 through the recess 50 of the vessel bottom 33.
  • an actuating head 18 engages the rotor 4 for its rotary drive about the essentially horizontal axis of rotation A, which engages with a strip-shaped projection 23 in a recess in the rotor 4 designed as a transverse slot 24. This enables torque transmission. If the rotor 4 is also to be moved axially back and forth, the projection 23 engages in a form-fitting manner in a manner not shown in the drive-side end of the rotor 4 or in a part which is connected to the latter in a non-positive or positive manner.
  • the actuating head 18 lies in the working position of the rotor 4 with a shoulder 37 on the drive-side surface of the stator 6.
  • the drive shaft 11 of a drive adjoins the actuating head 18 to the outside via a universal joint 19.
  • a corresponding linear drive can be provided, for example the drive shaft 11 can be designed as a thrust piston motor.
  • the actuating head 18 is pressed in the direction of the stator 6 until the shoulder 37 abuts the stator 6 and thus the flow channel 7 of the rotor 4 is in the position in which it is located by rotating the rotor 4 to the full opening or full Locked position or intermediate positions can be rotated.
  • the embodiment of the twist lock 1 according to FIG. 6 differs from that according to FIG. 1 essentially in that the flow channel 7 of the rotor 4 does not run straight but in a corner, so that the inlet opening 14 of the rotor 4 in the metal melt side end face 39 of the rotor 4 lies, while the outlet opening 15 of the rotor 4 continues into its outer surface 35. Accordingly, the outflow channel 5 of the stator 6 is practically formed only by a section which opens into the outlet opening 13, while the inlet opening 16 forms part of the cylindrical seat 17.
  • the holding part 62 here has an outer flange section which bears on the outside of the metal vessel wall 34 and on which the plate-shaped part of the carrier device 22 in the closed position from the outside acts to keep the stator 6 secured in place due to its conical shape. It can be seen from the comparison of FIGS. 1 and 2 that the stator / rotor unit sits higher in the latter, so that the inlet opening 14 of the flow channel 7 of the rotor 4 is located directly above the top of the vessel bottom lining 2 in the vessel interior 8.
  • stator / rotor unit are fully integrated into the vessel bottom and wall linings 2, 3, this unit can obviously also be shifted further into the vessel interior 8, that is to say initially in FIG. 5 above and then to the left, so that the stator / rotor unit is supported, for example, on the inner surface of the vessel bottom lining 2, or first in FIG. 6 to the left and then possibly upwards.
  • the stator / rotor unit comes even more intimately into contact with the molten metal on all sides in order to avoid freezing and the ingress of oxygen.
  • the rotary closure 1 essentially has a refractory rotor 4 which serves as a closure body and which is rotatable about an essentially horizontal axis A and axially displaceable in a recess 55 with a circular cylindrical inner surface 58 of a tubular, essentially square outer cross-section , refractory stator 6 is arranged.
  • the rotor 4 adjoins the circular cylindrical inner surface 58 of the stator 6 with a circular cylindrical outer surface 57.
  • the rotor 4 has a flow channel 7, which is inserted by pushing the rotor 4 into the stator 6 and rotating about the axis A with the outlet channel 5 of the stator 6 can be more or less covered.
  • Outflow channel 5 and flow channel 7 are located relatively close to the one container side wall 3, 34 consisting of the vessel wall lining according to the drawing 3 and metal vessel wall 34, but they can also be arranged in the middle of the vessel bottom 2, 33 consisting of vessel bottom lining 2 and metal vessel bottom 33.
  • the screw cap 1 is arranged on the vessel bottom lining 2 in the container interior 8 and completely surrounded by the molten metal during operation. However, it can also be at least partially embedded in the vessel bottom lining 2.
  • the outlet opening 13 of the outflow channel 5 opens into a pouring pipe 10 embedded in the vessel bottom lining 2.
  • the stator 6 is with its two ends (only one end can be seen in FIG.
  • the rotary lock 1 has the advantage that the rotor 4 and stator 6 can easily be replaced by the push-through method through the side wall 3, 34 after wear.
  • the stator 6 is arranged in the transition region between the vessel bottom lining 2 and the vessel wall lining 3.
  • the outflow channel 5 of the stator 6 and the flow channel 7 of the rotor 4 are angled so that the molten metal is first discharged obliquely and then vertically downwards.
  • the outflow channel 5 is also flared on the inlet side.
  • rotor 4 and stator 6 can be composed of individual rotor parts 4 'or stator parts 6'.
  • An exchange of the rotor 4 or of rotor parts 4 ' can be accomplished simply by pushing new rotor parts 4' from one side into the cylindrical recess 55 of the stator 6. This can also be done during the casting process.
  • frontal tongue and groove arrangements between the individual rotor parts 4 ' ensure not only a common rotation from the outermost rotor element 4', but also the correct rotational orientation of the rotor parts 4 'with each other.
  • Each rotor part 4 ' has a flow channel 7', which can be brought into congruence with an outflow channel 5 '.
  • the stator parts 6 ' In this case only one has an outflow channel 5'.
  • the invention is not restricted to this.
  • Fig. 10 illustrates schematically in cross section a metallurgical vessel with a transversely through the interior of the vessel 8 above the vessel bottom liner 2 and 1 arranged in the middle of the vessel bottom 33 arranged outflow channel 5 'of a stator 6' and flow channel 7 'of a rotor part 4'.
  • the rotor parts 4 ' can be pushed from right to left even when the vessel is filled with molten metal.
  • the drive arrangement 59 and the closure arrangement 60 can be pivoted away.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Sliding Valves (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Heat Treatment Of Articles (AREA)

Claims (31)

  1. Obturateur rotatif pour la coulée essentiellement verticale d'un bain de métal liquide contenu dans une cuve métallurgique comportant un rotor (4) réfractaire, symétrique de révolution, faisant office de corps d'obturateur, qui est monté avec possibilité de rotation autour d'un axe (A) sensiblement horizontal dans un stator (6) réfractaire pourvu d'un conduit d'écoulement, le rotor (4) présentant un conduit de passage (7) qui peut être ouvert et fermé par rotation par rapport au stator (6) et dont l'orifice de sortie (15) est agencé dans la surface périphérique du rotor (4), caractérisé par le fait que le stator (6) et le rotor (4) sont disposés à l'intérieur de la cuve dans et/ou sur le revêtement (3) réfractaire de paroi de la cuve et le cas échéant le revêtement (2) de fond de la cuve, dans la région du bain de métal.
  2. Obturateur rotatif selon la revendication 1, caractérisé par le fait que le rotor (4) est appliqué à partir de l'extérieur avec pression par une partie conique (3) sur un siège (17) conique adapté.
  3. Obturateur rotatif selon la revendication 1, caractérisé par le fait que la surface périphérique du rotor (4) est cylindrique circulaire etest montée dans un siège (17) cylindrique circulaire adapté du stator (16).
  4. Obturateur rotatif selon la revendication 3, caractérisé par le fait que le rotor (4) peut se déplacer axialement dans le stator (6).
  5. Obturateur rotatif selon l'une des revendications 1 à 4, caractérisé par le fait que l'orifice d'entrée (14) du conduit de passage (7) du rotor (4) est agencé dans la surface périphérique conique ou cylindrique de celui-ci.
  6. Obturateur rotatif selon l'une des revendications 1 à 4, caractérisé par le fait que l'orifice d'entrée (14) du conduit de passage (7) du rotor (4) est agencé dans une surface frontale (9) du rotor (4) tournée vers l'intérieur (8) de la cuve.
  7. Obturateur rotatif selon la revendication 6, caractérisé par le fait que la surface frontale (9) du rotor (4) contenant l'orifice d'entrée (14) du conduit de passage (7) du rotor (4) est sensiblement perpendiculaire à l'axe de rotation (A) du rotor (4).
  8. Obturateur rotatif selon l'une des revendications 1 à 7, caractérisé par le fait que le rotor (4) peut être déplacé en translation à travers une ouverture (55) de la paroi (34) de la cuve indépendamment du stator (4) et ainsi peut être remplacé.
  9. Obturateur rotatif selon l'une des revendications 1 à 8, caractérisé par le fait que le stator (6) dans son intégralité ou une partie au moins de celui-ci peut être déplacé en translation à travers une ouverture (50) du fond (33) de cuve et/ou à travers une ouverture (55) de la paroi (34) de récipient et ainsi peut être remplacé.
  10. Obturateur rotatif selon l'une des revendications 1 à 9, caractérisé par le fait que le stator (6) et le rotor (4) peuvent être déplacés conjointement à travers l'ouverture (50) du fond (33) de cuve et/ou à travers l'ouverture (55) de la paroi (34) de la cuve et ainsi peuvent être remplacés.
  11. Obturateur rotatif selon l'une des revendications 1 à 10, caractérisé par le fait que le rotor (4) est entraîné à partir de la paroi (34) de la cuve, au moyen d'une tige d'entraînement (11) qui traverse la paroi (34) de la cuve.
  12. Obturateur rotatif selon l'une des revendications 1 à 11, caractérisé par le fait que le rotor (4) est maintenu dans le siège (17) du stator (6) au moyen d'une tête de commande (18), la tête de commande (18) coopérant côté extérieur par conjugaison de forme avec l'extrémité côté entraînement du rotor (4).
  13. Obturateur rotatif selon l'une des revendications 1 à 12, caractérisé par le fait que le rotor (4) est relié au dispositif d'entraînement (20) par l'intermédiaire d'un joint de cardan (19).
  14. Obturateur rotatif selon l'une des revendications 1 à 13, caractérisé par le fait que le rotor (4) est relié au dispositif d'entraînement (20) par l'intermédiaire d'un accouplement élastique (19).
  15. Obturateur rotatif selon l'une des revendications 1 à 14, caractérisé par le fait que le dispositif d'entraînement (20) et les moyens de transmission (18, 19, 21) qui agissent sur le rotor (4) sont supportés par un dispositif porteur (22) qui peut être éloigné par pivotement de la paroi (34) de la cuve.
  16. Obturateur rotatif selon l'une des revendications 3 à 15, caractérisé par le fait que le stator (6) traverse par ses deux extrémités deux parois (3, 34) latérales opposées de la cuve et qu'ainsi le rotor (4) peut être remplacé en le faisant glisser.
  17. Obturateur rotatif selon la revendication 16, caractérisé par le fait que le rotor (4) peut être remplacé par un nouveau rotor (4) ou des éléments (4') du rotor (4) peuvent être remplacés par de nouveaux éléments (4') de rotor (4) en en le (les) faisant glisser, même lorsque la cuve est pleine.
  18. Obturateur rotatif selon l'une des revendications 3 à 17, caractérisé par le fait que le stator (6) a la forme d'un tube cylindrique.
  19. Obturateur rotatif selon l'une des revendications 1 à 18, caractérisé par le fait que le conduit d'écoulement (7) et le conduit de passage (5) sont coudés.
  20. Obturateur rotatif selon l'une des revendications 17 à 19, caractérisé par le fait qu'à l'intérieur du stator (6) sont montés plusieurs éléments de rotor (4') qui comportent chacun au moins un conduit de passage (7'), sont disposés bout à bout et s'engagent les uns dans les autres par exemple par un système à rainure et languette.
  21. Obturateur rotatif selon l'une des revendications 17 à 20, caractérisé par le fait que le stator (6) est constitué par plusieurs éléments de stator (6') disposés bout à bout qui s'engagent les uns dans les autres par exemple par un système à rainure et languette.
  22. Obturateur rotatif selon l'une des revendications 1 à 21, caractérisé par le fait que le stator (6) ou un élément ou un prolongement de celui-ci est agencé en busette de coulée par immersion avec tube de coulée (10).
  23. Obturateur rotatif selon l'une des revendications 1 à 22, caractérisé par le fait que le rotor (4) est réalisé en un matériau réfractaire relativement tendre qui s'use et le stator (6) est réalisé en un matériau réfractaire relativement dur, résistant à l'usure.
  24. Obturateur rotatif selon l'une des revendications 1 à 23, caractérisé par le fait que le matériau réfractaire du rotor (4) et/ou du stator (6) contient du carbone, du graphite ou un lubrifiant permanent analogue au niveau de la (des) surface(s) tournées vers le stator (6) et/ou le rotor (4).
  25. Obturateur rotatif selon l'une des revendications 1 à 24, caractérisé par le fait que le matériau réfractaire du rotor (4) et/ou du stator (6) contient des fibres céramiques ou des fibres céramiques et des fibres de carbone ou de graphite.
  26. Rotor réfractaire pour un obturateur rotatif selon l'une des revendications 1 à 25, caractérisé par le fait qu'il présente à son extrémité extérieure coté entraînement une ouverture par exemple en forme de fente (24) transversale dans laquelle s'engage par conjugaison de forme une tête de commande (18) actionnée par le dispositif d'entraînement.
  27. Rotor selon la revendication 26, caractérisé par le fait qu'il présente au moins un conduit de passage (7) dont l'orifice d'entrée (14) et l'orifice de sortie (15) sont situés dans une surface périphérique (37) conique ou cylindrique.
  28. Rotor selon la revendication 26, caractérisé par le fait qu'il présente au moins un conduit de passage (7) dont l'orifice d'entrée (14) est situé dans une face frontale (9) sensiblement perpendiculaire à l'axe de rotation.
  29. Rotor selon l'une des revendication 1 à 25, caractérisé par le fait qu'il présente au moins un conduit d'écoulement (5) qui coupe transversalement une ouverture (35) recevant un rotor (4).
  30. Rotor ou stator selon l'une des revendications 26 à 29, caractérisé par le fait qu'il est réalisé en carbone ou en graphite.
  31. Rotor ou stator selon l'une des revendications 26 à 29, caractérisé par le fait qu'il est réalisé en béton réfractaire contenant du carbone
EP88110276A 1987-08-03 1988-06-28 Vanne rotative pour conteneur métallurgique ainsi que rotor et stator pour une telle vanne Expired - Lifetime EP0302215B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88110276T ATE83957T1 (de) 1987-08-03 1988-06-28 Drehverschluss fuer ein metallurgisches gefaess sowie rotor bzw. stator fuer einen solchen drehverschluss.

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE3725637 1987-08-03
DE19873725637 DE3725637A1 (de) 1987-08-03 1987-08-03 Drehverschluss fuer ein metallurgisches gefaess sowie rotor bzw. stator fuer einen solchen drehverschluss
DE19883805070 DE3805070A1 (de) 1987-08-03 1988-02-18 Drehverschluss fuer ein metallurgisches gefaess sowie rotor bzw. stator fuer einen solchen drehverschluss
DE3805070 1988-02-18
DE3819784 1988-06-10
DE19883819784 DE3819784A1 (de) 1987-08-03 1988-06-10 Drehverschluss fuer ein metallurgisches gefaess sowie rotor bzw. stator fuer einen solchen drehverschluss

Publications (2)

Publication Number Publication Date
EP0302215A1 EP0302215A1 (fr) 1989-02-08
EP0302215B1 true EP0302215B1 (fr) 1992-12-30

Family

ID=27196301

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88110276A Expired - Lifetime EP0302215B1 (fr) 1987-08-03 1988-06-28 Vanne rotative pour conteneur métallurgique ainsi que rotor et stator pour une telle vanne

Country Status (12)

Country Link
US (2) US4913324A (fr)
EP (1) EP0302215B1 (fr)
JP (1) JPS6457971A (fr)
KR (1) KR890003473A (fr)
CN (1) CN1014687B (fr)
AT (1) ATE83957T1 (fr)
BR (1) BR8803805A (fr)
CA (1) CA1339523C (fr)
DE (1) DE3877081D1 (fr)
ES (1) ES2037766T3 (fr)
GR (1) GR3006885T3 (fr)
SU (1) SU1732809A3 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990014907A1 (fr) * 1988-01-13 1990-12-13 Shinagawa Refractories Co., Ltd. Appareil regulateur du debit d'un metal en fusion
DE3805071A1 (de) * 1988-02-18 1989-08-31 Didier Werke Ag Abschluss- und regeleinrichtung fuer das giessen fluessiger metallschmelze
DE3826245A1 (de) * 1988-08-02 1990-02-08 Didier Werke Ag Schliess- und/oder regelorgan fuer den abstich fluessiger metallschmelze aus einem metallurgischen gefaess
CH676811A5 (fr) * 1988-09-29 1991-03-15 Stopinc Ag
EP0474863B2 (fr) * 1989-06-01 2000-07-05 Shinagawa Refractories Co., Ltd. Appareil regulateur du debit d'un metal en fusion
US5156752A (en) * 1990-01-11 1992-10-20 Didier-Werke Ag Elongated stator and rotor members with elongated slots
DE4000656A1 (de) * 1990-01-11 1991-07-18 Didier Werke Ag Schliess- und/oder regelorgan
WO1992012815A1 (fr) * 1991-01-18 1992-08-06 Foseco International Limited Sortie de cuve
WO2000056484A1 (fr) * 1999-03-22 2000-09-28 Vesuvius Crucible Company Element refractaire et vanne rotative pour metal en fusion
FI20040588A0 (fi) * 2004-04-27 2004-04-27 Indref Oy Metallivaluastian ulosvirtauskanavan sulkimen asennus
FI20040589A0 (fi) * 2004-04-27 2004-04-27 Indref Oy Metallivaluastian ulosvirtauskanavan suljin
US7543605B1 (en) * 2008-06-03 2009-06-09 Morando Jorge A Dual recycling/transfer furnace flow management valve for low melting temperature metals
RU2484923C1 (ru) * 2012-03-11 2013-06-20 Научно-производственное республиканское унитарное предприятие "НПО "Центр" Литейный ковш
US10935320B2 (en) 2013-04-12 2021-03-02 Refractory Intellectual Property Gmbh & Co. Kg Method for determining the state of a refractory lining of a metallurgical vessel for molten metal in particular
EP2789960B1 (fr) * 2013-04-12 2018-12-19 Refractory Intellectual Property GmbH & Co. KG Procédé destiné à déterminer l'état d'un revêtement réfractaire d'une cuve de fusion métallurgique
JP6565939B2 (ja) 2017-01-12 2019-08-28 トヨタ自動車株式会社 車両用パネル構造

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AT165292B (fr) *
DE357912C (de) * 1922-09-04 Alex Grau Stopfen fuer Giesspfannen
GB183241A (en) * 1921-04-19 1922-07-19 William Rowlands Improvements in or relating to teeming devices for ladles adapted to hold molten steel
US1742065A (en) * 1928-05-26 1929-12-31 George H J Eiser Ladle discharger
US2087824A (en) * 1934-06-21 1937-07-20 Robert J Tully Metal teeming apparatus
US2224514A (en) * 1939-04-28 1940-12-10 United American Metals Corp Melting pot
US3165795A (en) * 1963-05-08 1965-01-19 George C Bahm Apparatus for teeming of molten metals
US3344965A (en) * 1965-10-18 1967-10-03 Joseph J Kerin Pouring nozzle for molten steel ladle
US3386633A (en) * 1966-04-20 1968-06-04 Nadrich John Closure for a bottom pour metallurgical ladle
GB1243778A (en) * 1967-09-08 1971-08-25 Ashmore Benson Pease & Company Continuous casting apparatus
US3651998A (en) * 1970-09-23 1972-03-28 Metallurg Exoproducts Corp Nozzle for a pouring ladle
CH571374A5 (fr) * 1974-07-12 1976-01-15 Metacon Ag
DE2608472A1 (de) * 1976-02-27 1977-09-08 Mannesmann Ag Drehschieberverschluss fuer giesspfannen
AT357283B (de) * 1977-09-16 1980-06-25 Voest Alpine Ag Drehschieberverschluss fuer mit feuerfester auskleidung versehene gefaesse
CH661456A5 (de) * 1983-01-11 1987-07-31 Stopinc Ag Drehverschluss fuer schmelzfluessige werkstoffe, insbesondere metall-schmelzen.
DE3306670C2 (de) * 1983-02-25 1986-10-30 Gerhard 6920 Sinsheim Bleickert Abstichvorrichtung für Abschmelz- und/oder Warmhalteöfen für NE-Metallschmelzen
JPS61182857A (ja) * 1985-02-08 1986-08-15 Shinagawa Refract Co Ltd 連続鋳造用タンデイツシユ流量制御装置
AU591889B2 (en) * 1985-03-26 1989-12-21 British Steel Plc Improvements in or relating to outlet valves for metal containing vessels
US4630667A (en) * 1985-07-17 1986-12-23 Labate Michael D Coated refractory shapes useful in bottom pouring of ingots in ingot molds
DE3540202C1 (de) * 1985-11-13 1986-11-27 Brown, Boveri & Cie Ag, 6800 Mannheim Zuflußstellglied für eine Kokillenfüllstandsregelung einer Stranggießanlage
GB8701158D0 (en) * 1987-01-20 1987-02-25 Distington Eng Contracting Ltd Vessels

Also Published As

Publication number Publication date
CN1031341A (zh) 1989-03-01
SU1732809A3 (ru) 1992-05-07
US5083688A (en) 1992-01-28
ES2037766T3 (es) 1993-07-01
CN1014687B (zh) 1991-11-13
BR8803805A (pt) 1989-02-21
DE3877081D1 (de) 1993-02-11
EP0302215A1 (fr) 1989-02-08
US4913324A (en) 1990-04-03
CA1339523C (fr) 1997-11-04
JPS6457971A (en) 1989-03-06
KR890003473A (ko) 1989-04-15
GR3006885T3 (fr) 1993-06-30
ATE83957T1 (de) 1993-01-15

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