EP0361052B1 - Unité refractaire de stator-rotor pour un obturateur de busette de coulée dans un récipient contenant un métal liquide - Google Patents

Unité refractaire de stator-rotor pour un obturateur de busette de coulée dans un récipient contenant un métal liquide Download PDF

Info

Publication number
EP0361052B1
EP0361052B1 EP89115072A EP89115072A EP0361052B1 EP 0361052 B1 EP0361052 B1 EP 0361052B1 EP 89115072 A EP89115072 A EP 89115072A EP 89115072 A EP89115072 A EP 89115072A EP 0361052 B1 EP0361052 B1 EP 0361052B1
Authority
EP
European Patent Office
Prior art keywords
stator
rotor
vessel
unit
transverse
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
EP89115072A
Other languages
German (de)
English (en)
Other versions
EP0361052A2 (fr
EP0361052A3 (fr
Inventor
Werner Keller
Rolf WALTENSPÜHL
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.)
Stopinc AG
Original Assignee
Stopinc 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
Application filed by Stopinc AG filed Critical Stopinc AG
Priority to AT89115072T priority Critical patent/ATE97041T1/de
Publication of EP0361052A2 publication Critical patent/EP0361052A2/fr
Publication of EP0361052A3 publication Critical patent/EP0361052A3/fr
Application granted granted Critical
Publication of EP0361052B1 publication Critical patent/EP0361052B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B22D41/14—Closures

Definitions

  • the invention relates to a fireproof stator / rotor unit for a closure on the spout of a metal-containing vessel, which consists of a stator fastened in the vessel wall and a rotatable and / or longitudinally displaceable, for opening or. Closing the closure serving rotor exists, the unit protrudes into the melt and therein has at least one transverse pouring opening which leads from the container.
  • a closure (US Pat. No. 3,651,998) of the type mentioned shows a stator projecting into the melt and a rotatable rotor arranged concentrically therein. The rotor is pressed against the closed stator by springs acting on its lower end face.
  • the melt flows from several transverse bores into the central opening of the rotor and from there to the spout. Since a relatively large clearance is provided between the outer diameter of the rotor and that of the bore of the stator, the inflow of molten metal can hardly be prevented in the resulting gap, even when gas is supplied. This will freeze very quickly and cause the rotor to jam.
  • the tensile force acting on the stator from the springs via the rotor is not unobjectionable, since the refractory material to be used for the stator itself can only absorb very small tensile forces and is also weakened by the transverse bores mentioned.
  • An inflow actuator according to DE-PS 35 40 202 provides two concentrically arranged tubes which protrude into a storage vessel and can be moved relative to one another with openings for melt passage, in which the inner tube is fixed in the pouring opening of the container and the outer tube is placed over it.
  • the melt can be poured off in a regulated manner by correspondingly rotating or longitudinally displacing the outer tube.
  • a relatively complex mechanism located above the vessel is necessary for rotating the tube. This must not exert any transverse forces on these pipes, otherwise the inner standing pipe would break off. If the storage vessel is an intermediate container, the space is normally very limited because of the pan arranged directly above it, which is disadvantageous in the arrangement mentioned.
  • the present invention is based on the object of developing the closure according to the type described at the outset in such a way that it is simple and space-saving in construction with great operational reliability and absolute functionality.
  • the object is achieved according to the invention in that the rotor guided through the stator can be driven from the bottom of the vessel and in that a cylindrical surface surrounding the transverse opening (s) is provided between the rotor and the stator in almost the entire area inside the vessel, while in the area lying in the vessel wall there is a game absorbing their different thermal expansions to prevent the unit from jamming.
  • the rotor is arranged concentrically in the stator, has a central flow opening and at least one transverse opening connecting it and lying inside the vessel.
  • the stator has a pouring opening lying transversely and connected to it and leading out of the vessel, and the rotor is only arranged in the region of the transverse opening within the stator so that it can rotate and / or move longitudinally.
  • a gas supply of an inert gas is preferably provided in the lower region between the rotor and the stator. This almost completely prevents air from being sucked into the melt.
  • the transverse opening in the stator is to be arranged at such a distance above the inner wall of the vessel that the cold and contaminated melt collecting directly above the bottom wall does not flow away.
  • the stator is preferably inserted with a vertical axis in the bottom of the vessel, but could also be implemented in the side wall with horizontal spout, in particular in the case of pans containing aluminum melt.
  • the stator contains at least one annular groove in the bore provided for the Roltor, which is arranged below the transverse flow opening and is surrounded by the sealing cylindrical surface. Radial through openings connect this annular groove to the inside of the vessel.
  • the melt flowing through the openings in the stator or rotor normally results in a negative pressure, including in the sealing gap between the rotor and stator, which can cause air to be sucked in from the outside. With this ring groove, the vacuum is interrupted and practically prevented from being sucked in.
  • a closure 10 according to FIG. 1 is arranged in the spout 13 of the vessel wall 14 of a partially illustrated vessel 11, the latter consisting of a steel jacket 12 and a refractory wall 14 and can be, for example, a pan or an intermediate container for molten steel.
  • the closure 10 essentially consists of a refractory stator 15 embedded in the vessel wall 14, a refractory rotor 16 rotatably mounted therein and a drive mechanism 24.
  • the rotor 16 is held in a housing 25 and coupled via a drive connection (not shown) to a rotating ring 21 which is driven by a drive motor in a controllable manner via a pinion 26.
  • the stator 15 is designed as a sleeve and has a conical outer surface for the purpose of placing it in the vessel wall 14 without problems. It extends into the interior of the vessel 11 and has two transverse openings 17 and 18 therein, which are round, but also have a different cross-sectional shape, such as can be designed as elongated holes in the horizontal or vertical direction.
  • the concentrically guided in the stator 15 rotor 16 has an axially extending blind hole 19 'and with the aforementioned openings 17 and 18 communicating transverse openings 19 which have a defined distance, approximately 20 to 70 mm, from the inner wall 14'.
  • the closure In the position shown, the closure is in the open position and, for example, molten steel can flow through the openings 17, 18 and 19 into a mold in a controllable manner.
  • the rotor can also be designed as a dip tube extended into the melt of the mold.
  • Fig.2 shows a variant of a refractory stator / rotor unit similar to that of Figure 1, but in which only a transverse opening 31 and a spout 31 'connected thereto in the Rotor 33 is provided and the stator 32 is hat-shaped. Again, a sealing cylindrical surface 30 is provided between the latter and the rotor 33 within the area in the melt. The inside diameter of the stator is widened within the vessel wall 14 in order to achieve the aforementioned play 34. At the lower end of the stator bore, an annular gap 35 is formed with a connecting line 36 into which inert gas, for example argon, is blown in to prevent air intake.
  • the transverse opening 31 is guided obliquely down into the pouring opening 31 ', but could also be arranged vertically to the latter.
  • a unit according to Fig.3 and Fig.4 in turn consists of a refractory sleeve designed in the vessel wall 14 stator 42 and a rotatably guided refractory rotor 43.
  • a transverse opening 41 and a pouring opening 41 'emanating therefrom in the rotor 43 allow the pouring of melt from the container 11.
  • the stator 42 has an annular groove 44 in its bore and leading radial openings 44 'into this, which between the transverse opening 41 and the inner wall 14' of the vessel 11 come to lie.
  • the sealing cylindrical surface 40 between the stator 42 and the rotor 43 surrounds the opening 41 and also this annular groove 44, so that the melt located in this annular groove 44 is prevented from escaping.
  • a play 46 is again provided in the area lying in the vessel wall 14, which is achieved by tapering the outer diameter of the rotor.
  • a closure 50 according to FIG. 5 has a refractory stator / rotor unit, in which a frustoconical stator 52 is mortared into the spout 13 of the pan 11, has a sacklock-shaped opening 54 and a transverse opening 55 connected to it in the longitudinal direction, and a rotor 53 in the area of transverse opening 55 is rotatably and / or longitudinally displaceable in it.
  • a sealing cylindrical surface 56 is provided between the rotor 53 and the stator 52, which extends approximately over the entire area of the unit lying in the melt. Between the drive shaft 53 'and the surrounding bore in the stator 52, a defined game 57 is provided, with which jamming of the shaft 53' is avoided in this bore.
  • the rotor 53 can either be rotated or shifted in the longitudinal direction for the purpose of opening or closing the closure 50.
  • a pouring tube 58 is connected to the flow opening 54 of the stator 52 and usually extends into the melt of a mold.
  • the stator 52 contains a refractory high-value insert 52 ′ surrounding the rotor 53 ⁇ for the purpose of increasing the service life, which is preferably embedded in the refractory cast stator 52.
  • the flow opening 55 runs differently from the variant according to FIG. 5 insofar as it, after having passed through the sealing surface 56 'between the rotor 53 ⁇ and the stator 52, is brought out of it approximately in the middle of the rotor 53 ⁇ .
  • the refractory stator 52 contains below its transverse opening 55 an annular groove 60 surrounding the rotor 53, which is connected to the inside of the vessel via at least one opening 61 and from the sealing cylindrical surface 56 between the rotor 53 and the stator 52' surround is.
  • this makes it possible to avoid undesired air being sucked into the melt located in the transverse opening 55 and there leading to reoxidation of the liquid steel.
  • FIG. 8 and 9 each show a variant of the closure 10 shown in FIG. 1.
  • the stator 15 'and the rotor 16' which is rotatably guided in it according to FIG. 8 each have a mutually contacting one another in the operating state and perpendicular to the cylindrical surface 20 running ring surface 75.76.
  • These ring surfaces form an additional seal in addition to the sealing surface 20 provided in any case between the stator 15 'and the rotor 16'. This prevents metal melt from flowing into the widened space between the stator and the rotor in the region located within the vessel wall.
  • the stator / rotor unit 15 ⁇ , 16 ⁇ differs from that according to Figure 8 only in that the additional sealing ring surfaces 75 ', 76' at an incline, preferably between 30 ° and 60 ° to the cylindrical sliding surface 20 run and the rotor 16 ⁇ has put on an annular seal 77, which is made of a refractory material with good sliding properties, such as Graphite. To center it, this ring seal 77 is positioned on a stop surface 78 on the rotor 16 ⁇ .
  • the ring seal could of course also be embedded in the stator 15 ⁇ .
  • Stator and rotor 15 ', 16' respectively. 15 ⁇ , 16 ⁇ are advantageously pressed against each other on these ring surfaces under a slight contact pressure (a few kilograms).
  • stator / rotor units described are particularly intended for vessels with molten steel, in which they are arranged in the bottom of the vessel with a vertical spout. However, it would preferably be conceivable for vessels with light metal melts to be installed in the side wall with a horizontal spout.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Continuous Casting (AREA)
  • Motor Or Generator Frames (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Discharge Heating (AREA)
  • Sliding Valves (AREA)
  • Induction Machinery (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Manufacture Of Motors, Generators (AREA)

Claims (18)

  1. Ensemble stator/rotor réfractaire pour un obturateur de busette de coulée d'une cuve (11) contenant un bain de métal en fusion, ensemble constitué par un stator (15, 52) qui est fixé sur la paroi de la cuve et par un rotor (16, 53) qui est monté dans celui-ci avec possibilité de rotation et/ou de déplacement en translation aux fins d'ouvrir et respectivement de fermer l'obturateur, ledit ensemble faisant saillie dans la cuve et présentant, à l'intérieur de celle-ci, au moins un orifice de coulée transversal et, à partir de ce dernier, un orifice de coulée menant hors de la cuve, caractérisé par le fait que le rotor (16, 53) guidé dans le stator (15, 52) peut être entraîné à partir du fond (11') de la cuve et par le fait qu'il est prévu, entre le rotor (16, 53) et le stator (15, 52), dans pratiquement toute la zone qui fait saillie dans la cuve (11), une surface cylindrique (20, 56) qui entoure avec étanchéité le ou les orifices (17, 18, 55) transversaux, tandis qu'il est prévu, dans la zone située à l'intérieur de la paroi (14) de la cuve un jeu (22, 57) qui absorbe les dilatations thermiques du stator et du rotor afin d'éviter un blocage de l'ensemble.
  2. Ensemble selon la revendication 1, caractérisé par le fait que le diamètre de l'alésage du stator (15, 52), dans la zone située à l'intérieur de la paroi (14) de la cuve est augmenté par rapport à la zone à l'intérieur de la cuve et/ou le diamètre extérieur du rotor (16) est diminué d'au moins quelques dixièmes de millimètres.
  3. Ensemble selon la revendication 1 ou 2, caractérisé par le fait que le rotor (16, 33, 43) est disposé concentriquement à l'intérieur du stator (15, 32, 42) et présente un orifice d'écoulement (19', 31', 41') central et au moins un orifice (19, 31, 41) transversal qui communique avec lui et est situé à l'intérieur de la cuve.
  4. Ensemble selon la revendication 1 ou 2, caractérisé par le fait que le stator (52) comporte un orifice transversal et un orifice de coulée (55 et 54) communiquant avec celui-ci situé qui mène à l'extérieur de la cuve, par le fait que le rotor (53), dans la zone de l'orifice transversal (55), est disposé avec possibilité de rotation et/ou de déplacement en translation à l'intérieur d'un alésage du stator (52) et présente un orifice d'écoulement (55 ou 55') transversal débouchant ou courbe à l'intérieur de la cuve.
  5. Ensemble selon l'une des revendications précédentes, caractérisé par le fait qu'il est prévu une arrivée de gaz (35, 36, 71, 72) pour un gaz inerte, comme par exemple de l'argon, entre le rotor (33, 53) et le stator (32, 52) dans la zone située dans la paroi de la cuve.
  6. Ensemble selon l'une des revendications précédentes, caractérisé par le fait que l'orifice d'écoulement (17, 18, 31, 41, 55) transversal dans le stator (15, 32, 42, 52) présente une distance déterminée par rapport à la paroi intérieure (14') de la cuve, de préférence 20 millimètres.
  7. Ensemble selon l'une des revendications précédentes, caractérisé par le fait qu'il est monté de préférence verticalement dans le fond de la cuve.
  8. Ensemble selon l'une des revendications précédentes, caractérisé par le fait que le rotor (16', 16'') et le stator (15', 15'') présentent, au niveau de leurs surfaces cylindriques assurant l'étanchéité; chacun au moins une surface (75, 76, 75', 76') annulaire inclinée faisant office de joint qui sont en contact mutuel.
  9. Ensemble selon la revendication 8, caractérisé par le fait que les surfaces (75, 76, 75', 76') annulaires sont disposées à l'extrémité inférieure de la surface (20) cylindrique assurant l'étanchéité prévue entre le rotor (16', 16'') et le stator (15', 15'').
  10. Ensemble selon la revendication 8 ou 9, caractérisé par le fait que la surface (75, 76) annulaire du stator (15') et du rotor (16') est sensiblement perpendiculaire à la surface cylindrique (20).
  11. Ensemble selon la revendication 8 ou 9, caractérisé par le fait qu'au moins une surface (76') annulaire est formée par un joint annulaire (77) qui est constitué notamment en graphite ou en un matériau analogue possédant de bonnes caractéristiques de glissement.
  12. Stator pour un ensemble selon la revendication 1, caractérisé par le fait qu'il présente un trou borgne ou un trou débouchant cylindrique.
  13. Stator pour un ensemble selon la revendication 12, caractérisé par le fait que son alésage (14) est augmenté ou réduit dans la zone située à l'intérieur de la paroi de la cuve.
  14. Stator selon l'une des revendications 4, 12 ou 13, caractérisé par le fait qu'il présente un orifice de coulée transversal et lié à celui-ci, un orifice de coulée menant hors de la cuve (55 et 54) et un alésage débouchant axial prévu pour le rotor (53).
  15. Stator selon la revendication 14, caractérisé par le fait qu'il est en un matériau réfractaire moulé et comporte dans la région de l'alésage pour le rotor (53''), une douille (52') insérée en matériau réfractaire de haute qualité.
  16. Stator selon l'une des revendications précédentes caractérisé par le fait qu'il comporte, dans l'alésage recevant le rotor (43, 53), au moins une gorge (44, 60) annulaire dans laquelle débouchent de préférence plusieurs orifices (44', 61) radiaux venant de l'intérieur de la cuve (11), par le fait que la gorge (44, 60) annulaire est disposée au-dessous de l'orifice d'écoulement (41, 55) transversal et est entourée par la surface (40, 56) cylindrique assurant l'étanchéité.
  17. Rotor pour un ensemble selon la revendication 1, caractérisé par le fait qu'il présente une surface extérieure cylindrique.
  18. Rotor pour un ensemble selon la revendication 17, caractérisé par le fait que, dans la zone située à l'intérieur de la paroi (14) de la cuve, sa surface extérieure cylindrique est augmentée ou réduite.
EP89115072A 1988-09-29 1989-08-16 Unité refractaire de stator-rotor pour un obturateur de busette de coulée dans un récipient contenant un métal liquide Expired - Lifetime EP0361052B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89115072T ATE97041T1 (de) 1988-09-29 1989-08-16 Feuerfeste stator/rotor-einheit fuer einen verschluss am ausguss eines metallschmelze enthaltenden behaelters.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3629/88A CH676811A5 (fr) 1988-09-29 1988-09-29
CH3629/88 1988-09-29

Publications (3)

Publication Number Publication Date
EP0361052A2 EP0361052A2 (fr) 1990-04-04
EP0361052A3 EP0361052A3 (fr) 1991-08-14
EP0361052B1 true EP0361052B1 (fr) 1993-11-10

Family

ID=4260085

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89115072A Expired - Lifetime EP0361052B1 (fr) 1988-09-29 1989-08-16 Unité refractaire de stator-rotor pour un obturateur de busette de coulée dans un récipient contenant un métal liquide

Country Status (14)

Country Link
US (1) US5078306A (fr)
EP (1) EP0361052B1 (fr)
JP (1) JPH02117767A (fr)
KR (1) KR970005374B1 (fr)
CN (1) CN1026563C (fr)
AT (1) ATE97041T1 (fr)
BR (2) BR8904884A (fr)
CA (1) CA1340564C (fr)
CH (1) CH676811A5 (fr)
DE (2) DE3926249A1 (fr)
ES (1) ES2048247T3 (fr)
FI (1) FI87427C (fr)
IL (1) IL91060A (fr)
ZA (1) ZA895689B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2226263B (en) * 1988-12-22 1992-11-04 Steel Castings Res Valve for vessel outlet
US5316271A (en) * 1989-06-01 1994-05-31 Shinagawa Refractories Co., Ltd. Discharge regulator of molten metal
CH681435A5 (fr) * 1989-07-11 1993-03-31 Stopinc Ag
DE3934601C1 (fr) * 1989-10-17 1990-10-04 Didier-Werke Ag, 6200 Wiesbaden, De
US5230813A (en) * 1989-11-28 1993-07-27 Didier-Werke Ag Stator and rotor members for use in apparatus for closing and/or regulating the discharge or tapping of molten metal
US5330162A (en) * 1992-07-29 1994-07-19 Meichuseiki Kabushiki Kaisha Dipping and pouring apparatus for molten metal
DE19500012A1 (de) * 1995-01-02 1996-07-04 Didier Werke Ag Regel- und Verschlußeinrichtung für ein metallurgisches Gefäß
US7543605B1 (en) * 2008-06-03 2009-06-09 Morando Jorge A Dual recycling/transfer furnace flow management valve for low melting temperature metals
CN106311981B (zh) * 2016-11-17 2018-03-02 遵义市润丰源钢铁铸造有限公司 消失模铸造铸件的浇注装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3344965A (en) * 1965-10-18 1967-10-03 Joseph J Kerin Pouring nozzle for molten steel ladle
US3651998A (en) * 1970-09-23 1972-03-28 Metallurg Exoproducts Corp Nozzle for a pouring ladle
AT357283B (de) * 1977-09-16 1980-06-25 Voest Alpine Ag Drehschieberverschluss fuer mit feuerfester auskleidung versehene gefaesse
JPS59157756U (ja) * 1983-04-04 1984-10-23 住友金属工業株式会社 タンデイツシユ
DE3540202C1 (de) * 1985-11-13 1986-11-27 Brown, Boveri & Cie Ag, 6800 Mannheim Zuflußstellglied für eine Kokillenfüllstandsregelung einer Stranggießanlage
JPS62202948U (fr) * 1986-06-11 1987-12-24
JPH01143757A (ja) * 1986-12-20 1989-06-06 Didier Werke Ag 冶金容器用の回転摺動閉鎖装置およびこのような回転摺動閉鎖装置用の回転体
JPS63256265A (ja) * 1987-04-13 1988-10-24 Nkk Corp ノズル内装形ロ−タリ−ノズル
US4779876A (en) * 1987-05-11 1988-10-25 John Crane-Houdaille. Inc. Drive for banded washer type seal
ES2037766T3 (es) * 1987-08-03 1993-07-01 Didier-Werke Ag Cierre giratorio para la sangria fundamentalmente vertical de una masa liquida de metal fundido desde un recipiente metalurgico.
DE3731600A1 (de) * 1987-09-19 1989-04-06 Didier Werke Ag Drehschiebeverschluss fuer ein metallurigsches gefaess sowie rotor und/oder stator fuer einen solchen drehverschluss
GB8723059D0 (en) * 1987-10-01 1987-11-04 Foseco Int Rotary pouring nozzle

Also Published As

Publication number Publication date
EP0361052A2 (fr) 1990-04-04
IL91060A0 (en) 1990-02-09
DE3926249A1 (de) 1990-04-05
BR8904884A (pt) 1990-05-08
KR970005374B1 (ko) 1997-04-15
ATE97041T1 (de) 1993-11-15
FI87427B (fi) 1992-09-30
US5078306A (en) 1992-01-07
EP0361052A3 (fr) 1991-08-14
CN1026563C (zh) 1994-11-16
FI894405A7 (fi) 1990-03-30
ZA895689B (en) 1990-04-25
CH676811A5 (fr) 1991-03-15
ES2048247T3 (es) 1994-03-16
FI87427C (fi) 1993-01-11
FI894405A0 (fi) 1989-09-18
BR8904883A (pt) 1990-05-08
CA1340564C (fr) 1999-05-25
JPH0339785B2 (fr) 1991-06-14
CN1041553A (zh) 1990-04-25
JPH02117767A (ja) 1990-05-02
DE58906160D1 (de) 1993-12-16
IL91060A (en) 1993-08-18
KR900004433A (ko) 1990-04-12

Similar Documents

Publication Publication Date Title
EP0308597B1 (fr) Dispositif de fermeture à obturateur rotatif pour un récipient métallurgique ainsi qu'un rotor et/ou un stator pour un dispositif de fermeture rotatif
EP0361052B1 (fr) Unité refractaire de stator-rotor pour un obturateur de busette de coulée dans un récipient contenant un métal liquide
EP0302215B1 (fr) Vanne rotative pour conteneur métallurgique ainsi que rotor et stator pour une telle vanne
DE4422749A1 (de) Pumpenschutzventil
DE2849159A1 (de) Spruehpistole zum aufspruehen einer feuerfesten auskleidung
DE3809072C2 (fr)
EP0669566B1 (fr) Mélangeur eau-vapeur
EP2516086B1 (fr) Fermeture coulissante pour un récipient métallurgique
DE3224710A1 (de) Schneckenpumpe mit an beiden enden gelagerter schnecke
CH684937A5 (de) Verschlussplatte für einen Schiebeverschluss an einem Metallschmelze enthaltenden Behälter.
DE3809071C2 (fr)
EP0413100B1 (fr) Dispositif de fermeture et de réglage pour un récipient métallurgique
DE3939241C2 (de) Schließ- und/oder Regelorgan
EP0436813B1 (fr) Dispositif de fermeture et/ou de réglage
DE60008182T2 (de) Dampfschälvorrichtung
DE3842121C2 (fr)
EP0572595A1 (fr) Boite refroidie par eau pour vanne a air chaud
DE102010034571B4 (de) Edelstahl-Saugkanal
CH681435A5 (fr)
WO2009033633A1 (fr) Adaptateur réfractaire en céramique
DE3540025A1 (de) Abdichtung fuer eine rotierende, im betrieb aufrecht stehende welle, insbesondere fuer wellen von pumpen und ruehrern
DE2030944A1 (de) Tiegel oder Konverter, der eine Wasserkühlung des Blechmantels auf weist
EP1057558B1 (fr) Machine à coulée sous vide sous pression
DE2242087C2 (de) Absperrschieber
EP0693338A1 (fr) Elément de fermeture pour un obturateur de busette de coulée dans un récipient contenant du métal liquide

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19890829

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT DE ES FR GB IT NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT DE ES FR GB IT NL SE

17Q First examination report despatched

Effective date: 19930126

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE ES FR GB IT NL SE

REF Corresponds to:

Ref document number: 97041

Country of ref document: AT

Date of ref document: 19931115

Kind code of ref document: T

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19931111

REF Corresponds to:

Ref document number: 58906160

Country of ref document: DE

Date of ref document: 19931216

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2048247

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 89115072.4

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20030814

Year of fee payment: 15

Ref country code: DE

Payment date: 20030814

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20030818

Year of fee payment: 15

Ref country code: NL

Payment date: 20030818

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20030819

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20030820

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20030922

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040816

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040816

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040817

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040817

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050301

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050301

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20040816

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050429

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20050301

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050816

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20040817