EP0480239A1 - Dispositif de fermeture et/ou de réglage pour le trou de coulée d'un récipient métallurgique - Google Patents

Dispositif de fermeture et/ou de réglage pour le trou de coulée d'un récipient métallurgique Download PDF

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Publication number
EP0480239A1
EP0480239A1 EP91116284A EP91116284A EP0480239A1 EP 0480239 A1 EP0480239 A1 EP 0480239A1 EP 91116284 A EP91116284 A EP 91116284A EP 91116284 A EP91116284 A EP 91116284A EP 0480239 A1 EP0480239 A1 EP 0480239A1
Authority
EP
European Patent Office
Prior art keywords
closure
cross
drive rod
control device
interior
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
EP91116284A
Other languages
German (de)
English (en)
Other versions
EP0480239B1 (fr
Inventor
Martin Wiesel
Ullrich Hintzen
Andreas Schuler
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
Application filed by Didier Werke AG filed Critical Didier Werke AG
Publication of EP0480239A1 publication Critical patent/EP0480239A1/fr
Application granted granted Critical
Publication of EP0480239B1 publication Critical patent/EP0480239B1/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
    • B22D41/14—Closures

Definitions

  • the invention relates to a closure and / or control device for the pouring of a metallurgical vessel, in which a drive rod extends in an interior of a refractory, ceramic closure and / or control element, by means of which the closure and / or control element can be rotated about its longitudinal axis is and the outer end of which can be coupled to a drive unit for the closure and / or regulating member and the inner end of which is tiltably mounted in the region of the bottom of the interior.
  • Such a closure and control device is described in where 88/04 209.
  • the drive rod is tiltably mounted on the bottom of the interior by means of a ball head.
  • a structural angular misalignment between the longitudinal axis (axis of rotation) of the closure and control element and the longitudinal axis (axis of rotation) of the drive rod can be compensated.
  • rotary movements of the drive rod cannot be transmitted to the locking and regulating member.
  • Special measures must be taken to transmit the rotary movement.
  • DE 37 43 383 A1 describes a locking and regulating device in which the locking and regulating member can only be raised or lowered by means of the drive rod, but cannot be rotated.
  • the drive rod acts on the closure and regulating element by means of a ball head on the bottom of the interior of the closure and regulating member, close to the outlet opening of the closure and regulating device.
  • EP 0 303 475 A1 describes a closure and control device in which the drive unit acts on the top of the closure and control element itself.
  • the object of the invention is to propose a closure and / or control device of the type mentioned at the outset, in which the design of the inner end of the drive rod and the base of the interior on the one hand enables the tiltability and on the other hand a transfer of the rotary movement that is as free of play as possible.
  • the above object is achieved in a closure and / or control device of the type mentioned above in that the interior in the region of its base and the drive rod at the inner end form cross-sectional profiles deviating from the circular shape transversely to the longitudinal axis, which are in engagement with one another and on one Contact line abut each other, and that at least one of the cross-sectional profiles tapers conically in the direction of the longitudinal axis, whereby there is a space above and below the line of contact, which allows the drive rod to tilt without the cross-sectional profiles coming out of engagement.
  • the interlocking cross-sectional profiles of the closure and / or control element on the one hand and the drive rod on the other hand, which deviate from the circular shape, ensure that the drive rod ensures a largely play-free rotary drive of the closure and / or control element.
  • the taper of at least one of the cross-sectional profiles and the resulting free space ensures that the play-free drive also exists when the drive rod - rotated by the drive unit - performs tilting movements with respect to the locking and / or regulating member. Such tilting movements do not lead to the locking and / or regulating member jamming at a bearing point.
  • the tapered cross-sectional profile can either be provided on a recess in the bottom of the interior or on the outside at the inner end of the drive rod. It is also possible to provide this cross-sectional profile both on a depression in the base and on the outside at the inner end of the drive rod.
  • the conical taper can be designed such that it merges into a rounding or curvature in the region of the line of contact of the cross-sectional profiles. This improves the tiltable storage.
  • the cross-sectional profiles deviating from the circular shape can have, for example, a cross shape or a star shape. You can also form a wavy circumferential contour. Depending on the application, structurally simple designs can be selected. It is also favorable that above the bottom of the interior and above the inner end of the drive rod, no cross-sectional profiles matched to one another are necessary.
  • the closure and / or regulating member above the base can be designed as a tube with an annular cross-section and the cross-section deviating from the circular shape can continue on the drive rod to its outer end. This considerably simplifies the manufacture of the closure and / or control element and the drive rod.
  • the latter can consist entirely or partially of ceramic material, preferably based on Zr0 2 , SiO, A1 2 0 3 or Si 3 N 4 , and can be produced in slip casting, in continuous casting or by isostatic pressing. Both full profiles and hollow profiles can be used.
  • a metallurgical vessel 1 has a cylindrical outlet member 2 (stator). This is provided with a lateral inlet opening 3 for the melt located in the vessel 1.
  • a closure and control member 4 (rotor) is rotatably mounted in the outlet member 2.
  • the closure and control element 4 engages with a lower area 5 in the outlet element 2.
  • the closure and control element 4 is provided with a passage opening 6, which by rotating the closure and control element 4 about its longitudinal axis L with the Inlet opening 3 can be brought to cover.
  • the outlet member 2 and the closure and control member 4 consist of refractory, ceramic material.
  • the closure and control element 4 is designed as a tube 7 with an annular cross section.
  • the closure and control element 4 protrudes above the vessel 1.
  • the reason 9 is close to the outlet member 2.
  • the base 9 lies above a step 10 of the outer circumference of the closure and control element 4, with which it stands on an upper edge 11 of the outlet element 2.
  • a drive rod 12 extends, which consists of refractory, ceramic material.
  • the lower, inner end 13 of the drive rod 12 is connected to the base 9 in a tiltable, non-rotatable connection. This is described in more detail below.
  • the upper, outer end 14 of the drive rod 12 is arranged above the closure and control member 4 on a universal joint 15. This sits on a drive shaft 16 which is mounted on a carrier 17.
  • the drive shaft 16 is rotatable by means of a chain drive 18 which can be actuated on the outside of the carrier 17 by means of an actuating lever 19.
  • FIGS. 2 to 6 there is a at the base 9 of the interior 8 Well 20 formed.
  • the depression 20 forms a cross-sectional profile 21 that deviates from the circular shape.
  • the drive rod 12 has a corresponding cross-sectional profile 22 at least at its lower end 13.
  • These cross-sectional profiles 21, 22 are in engagement with one another and abut one another at a contact line 23.
  • cruciform cross-sectional profiles 21, 22 are assumed.
  • FIG. 13, on the other hand shows cross-sectional profiles 21, 22 with a wavy circumferential contour.
  • further designs, for example star-shaped designs, of the cross-sectional profiles 21, 22 are possible, which ensure that the drive rod 12 engages in the closure and control element 4 in a rotationally fixed manner when the longitudinal axis A rotates.
  • the cross-sectional profile 21 of the depression 20 tapers conically in the direction of the longitudinal axis L from the interior 8 down to a bottom 24 of the depression 20.
  • the angle b of the free space 25 is dimensioned such that it is so large that the lower end 13 of the drive rod 12 does not abut flat against walls 26 of the recess 20 when the drive rod 12 tilts about the tilt angle a.
  • the free space 25 is dimensioned such that the cross-sectional profiles 21, 22 do not disengage even when tilted by the tilt angle a.
  • the cross-sectional profile 22 of the lower end 13 of the drive rod 12 also tapers. It is thereby achieved that the line of contact 23 engages deeper into the recess 20 than if the lower end 13 were not conical (see FIG. 4 with FIG. 5).
  • the drive rod 12 is provided with a curvature 27 at its lower end 13. This improves the storage in the recess 20 and the tiltability. An improvement in the storage can also be achieved in that a rounding 28 is provided in the area of the contact line 23.
  • the lower end 13 of the drive rod 12 is not tapered.
  • the recess 20 is not tapered. Instead, the lower end 13 of the drive rod 12 is tapered.
  • a projection 31 which is cruciform in the top view (cf. FIG. 12) is formed on the base 9 of the interior 8.
  • the bulges 27 are arranged on the end face of the latter.
  • the lower end 13 of the drive rod 12 is here provided with a recess 32, the cross-sectional profile 22 of which corresponds to the cross-sectional profile 21 of the extension 31.
  • the cross-sectional profiles 21, 22 engage in one another in a rotationally fixed manner and touch each other at a contact line 23.
  • the contact line 23 runs in the region of the curvature 27.
  • the depression 32 tapers conically.
  • FIG. 13 shows cross-sectional profiles 21, 22 with a wavy circumferential contour. It can be seen that the cross-sectional profile 22 has fewer corrugations than the cross-sectional profile 21. The cross-sectional profile 22 fits into the cross-sectional profile 21 in different rotational positions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Sliding Valves (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
EP91116284A 1990-10-10 1991-09-25 Dispositif de fermeture et/ou de réglage pour le trou de coulée d'un récipient métallurgique Expired - Lifetime EP0480239B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4032084 1990-10-10
DE4032084A DE4032084C1 (fr) 1990-10-10 1990-10-10

Publications (2)

Publication Number Publication Date
EP0480239A1 true EP0480239A1 (fr) 1992-04-15
EP0480239B1 EP0480239B1 (fr) 1994-08-03

Family

ID=6415973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91116284A Expired - Lifetime EP0480239B1 (fr) 1990-10-10 1991-09-25 Dispositif de fermeture et/ou de réglage pour le trou de coulée d'un récipient métallurgique

Country Status (5)

Country Link
EP (1) EP0480239B1 (fr)
AT (1) ATE109385T1 (fr)
DE (2) DE4032084C1 (fr)
DK (1) DK0480239T3 (fr)
ES (1) ES2057701T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2692344A1 (fr) * 1992-06-11 1993-12-17 Electricite De France Dispositif d'obturation d'une cuve contenant un magma vitreux en fusion, cuve correspondante et procédé d'évacuation de ce magma.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH688712A5 (de) 1994-07-22 1998-01-30 Stopinc Ag Verschlussorgan am Ausguss eines Metallschmelze enthaltenden Gefässes.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1032291A (en) * 1963-01-03 1966-06-08 Morganite Crucible Ltd Improvements in and relating to refractory sleeve sheaths
GB1160309A (en) * 1967-01-09 1969-08-06 Vesuvius Crucible Co Refractory Sleeve for Protecting Stopper Rod in a Vessel for Handling Molten Metal
WO1988004209A1 (fr) * 1986-12-01 1988-06-16 Arva Ag Regulateur de decharge et d'ecoulement pour recipients metallurgiques et procede de coulee
EP0303475A1 (fr) * 1987-08-10 1989-02-15 Thor Ceramics Limited Mécanisme de commande pour vanne rotative
DE3743383A1 (de) * 1987-12-21 1989-07-06 Radex Deutschland Ag Stopfenartige vorrichtung zur auslassregelung des ausgusses eines metallurgische schmelze aufnehmenden gefaesses

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4032083A1 (de) * 1990-10-10 1992-04-16 Didier Werke Ag Verschluss- und/oder regeleinrichtung fuer den ausguss eines metallurgischen gefaesses

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1032291A (en) * 1963-01-03 1966-06-08 Morganite Crucible Ltd Improvements in and relating to refractory sleeve sheaths
GB1160309A (en) * 1967-01-09 1969-08-06 Vesuvius Crucible Co Refractory Sleeve for Protecting Stopper Rod in a Vessel for Handling Molten Metal
WO1988004209A1 (fr) * 1986-12-01 1988-06-16 Arva Ag Regulateur de decharge et d'ecoulement pour recipients metallurgiques et procede de coulee
EP0303475A1 (fr) * 1987-08-10 1989-02-15 Thor Ceramics Limited Mécanisme de commande pour vanne rotative
DE3743383A1 (de) * 1987-12-21 1989-07-06 Radex Deutschland Ag Stopfenartige vorrichtung zur auslassregelung des ausgusses eines metallurgische schmelze aufnehmenden gefaesses

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2692344A1 (fr) * 1992-06-11 1993-12-17 Electricite De France Dispositif d'obturation d'une cuve contenant un magma vitreux en fusion, cuve correspondante et procédé d'évacuation de ce magma.

Also Published As

Publication number Publication date
ES2057701T3 (es) 1994-10-16
DK0480239T3 (da) 1994-11-07
ATE109385T1 (de) 1994-08-15
DE4032084C1 (fr) 1992-05-27
DE59102419D1 (de) 1994-09-08
EP0480239B1 (fr) 1994-08-03

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