US3921866A - Angularly movable obturator, particularly for controlling molten metal flow from containers or ladles - Google Patents

Angularly movable obturator, particularly for controlling molten metal flow from containers or ladles Download PDF

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Publication number
US3921866A
US3921866A US476364A US47636474A US3921866A US 3921866 A US3921866 A US 3921866A US 476364 A US476364 A US 476364A US 47636474 A US47636474 A US 47636474A US 3921866 A US3921866 A US 3921866A
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Prior art keywords
plate
support
container
opening
obturator according
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Expired - Lifetime
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US476364A
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English (en)
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Ferdinando Palazzo
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/26—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings characterised by a rotatively movable plate

Definitions

  • the member is formed with a toothed sector, and a rack engages the sector and moves the member so as to bring the hole in the bushing into and out of registry with the pouring channel
  • the member and its pivot pin are resiliently biased to provide a pressure between the mutually sliding surfaces of the fixed support and the bushing.
  • the present invention relates to devices for melted metal flow, particularly cast iron, steel, and its alloys, from ladles and/or similar containers.
  • the ladles receive melted metal from the converter or a suitable furnace, and are suitably suspended above the casting seats; they are opened over each ingot mold into which they pour the appropriate amount of metal through a bottom pouring aperture. After filling of each ingot mold, the downward flow of melted metal is intercepted and subsequently again permitted for filling of the following ladle.
  • the more diffused system for intercepting the pouring into a ladle comprises, as is known, the use of a bar immersed in the melted metal bath parallel to the ladle axis.
  • the bar is protected by a refractory envelope and provided with a terminal plug, which also is made of a refractory material and controls the pouring hole eccentrically located with respect to the ladle bottom.
  • the bar may be maneuvered from outside through suitable levers. It is also known that the plug or the protecting envelope of the bar must usually be replaced after each pouring; the time required for that replacement is obviously non-productive.
  • Interception devices for melted metal pouring are also known which are based on sliding drawers or planes which may be mechanically or hand controlled. All the mentioned devices present certain drawbacks deriving from the tendency to wear of the refractory members and from the complexity of the mechanical members and the actuating devices particularly the drawer type devices.
  • the subject matter of present invention is an obturator for intercepting metal pouring from ladles, characterized in that it comprises a mobile plane made of refractory material and mounted downstream of the ladle pouring chair hole; said plane being normal with respect to the pouring hole axis and provided with one or more transverse holes having their axes parallel to the pouring hole axis; said plane being angularly movable in order to bring it to such a position that one of its transverse holes coincides with the hole of the pouring chair, or in such a position as to intercept the ladle pouring chair hole.
  • the plane element or elements made of refractory material and provided with transverse holes are contained in a box-shaped metal support which may rotate around a pin having a vertical axis; the box-shaped support being angularly movable through suitable drive members which may be controlled by hand or by a suitable powered mechamsrn.
  • the angularly movable member may have an angular sector shape and be provided with one or more downflow holes, or it may be disk-shaped and provided with a plurality of downflow radial holes, thereby being particularly suitable for sequence pourmgs.
  • FIG. I is a partial vertical cross-section view of the sluice valve-like device applied to the ladle bottom, in a pouring position;
  • FIG. 2 is a vertical cross-section view along a plane at with respect to FIG. 1, which illustrates the same device in a pouring-intercepting position;
  • FIG. 3 is a horizontal cross-sectional view of the device along line III-Ill of FIG. 1;
  • FIG. 4 is a plan view of the steel-made support mounted on the ladle bottom
  • FIG. 5 is a cross section of the support along line V-V of FIG. 4;
  • FIG. 6 is a plan view of the lower cap of the device
  • FIG. 7 illustrates the same cap in a cross-sectional view along line VII-Vll of FIG. 6;
  • FIGS. 8 and 9 are, respectively, a plan and a transverse cross-sectional view of a plate carried by the device support;
  • FIGS. 10 and 11 similar to the preceding figures, illustrate a second plate of the support
  • FIG. 12 is an end view of the support for a rack
  • FIG. 13 is a horizontal cross-sectional view of same support along line XIII-XIII of FIG. 12;
  • FIG. 14 illustrates schematically a variant of the device, applied to a ladle
  • FIG. 15 is a plan view of the essential members forming the device of FIG. 14.
  • FIG. 16 is a plan view of a toothed crown disk support, for refractory sectors according to a further structural variant of the device according to the invention.
  • the intercepting member of the ladle comprises an obturator which is angularly movable, instead of linearly slidable, in order to greatly reduce the wear of the refractory members and to simplify, as described later, the movement transmission members of the obturator or intercepting member.
  • 20 indicates the metal bottom of a ladle internally lined with refractory material 21; 22 indicates the fixed pouring chair; and 23 indicates a metal plate also fixed to the ladle bottom.
  • a support 24 is anchored to plate 23 by means of a plurality of perimetrical bolts 25, only one of which is shown in FIG. 1. In FIG. 4, the support 24 in a plan view, the seats of the bolts 25 are indicated by 250.
  • the support is provided with a perimetrical edge 24b extending on three sides.
  • Pin 26 having a vertical axis, is free to slide and rotate in seat 27. Pin 26 serves as a pivot pin for the end 28a of plate 28 (FIGS.
  • Plate 28 when seen in a plan view (FIG. 3), has a substantially fan shape and is provided with the perimetrical toothed sector 280 which engages rack 29 (FIGS. 1, 3, l2, and 13).
  • the pivot axis of rotation of plate 28 is formed by the axis of pin 26 and, with respect to that axis, two rows of balls 30, 31 are radially located and retained in their seats by a metal diaphragm 32 (FIG. I) mounted on plate 28 by bolts 33.
  • Sliding tracks 34, 35 for balls 30, 31 are formed in a thrust support 36 (FIGS. 1, 3, 10, and 11) whose op posed ends 360 are tenon-shaped and accommodated with some clearance, in corresponding seats 240 formed in the edge 24b of support 24 (FIGS. 3, 4, and
  • the hemispherical head 26a of pin 26 is supported in the corresponding cavity 37b formed in the cross member 37, which is provided with ends 37a quite similar to those of the thrust support 36 (FIGS. 1, 8, and 9); the ends 37a are received in seats 24c formed in the edge of support 24.
  • Rows of cylindrical helical springs 38, 39 are mounted in compression between the bottom side of the thrust support and the cross member 38 respectively, and the closed bottom of corresponding seats 40a, 40b provided in the cap 40 (FIGS. 1, 6, 7), the latter articulated on a pin 41 at one side of the support 24, by means of cars 40:- and similar ears 24d of the support.
  • the cap 40 is further locked with respect to the support 24 by means of a plurality of bolts 42 and closed bottom nuts 43.
  • the bolts 42, having an eyelet head 420 are pivoted for oscillation in pairs of ears 24e carried by the support 24, and engage the perimetrical open slots 40d formed in the edge of cap 40 (FIGS. 2, 4, 6, and 7).
  • Cap 40 is further provided with a central oval seat 40e from which the end 28b of the funnelshaped appendix of plate 28 protrudes; 40f indicates a handle for maneuvering the cap 40.
  • a mobile pouring chair 44 made of refractory material, is mounted within the funnel-shaped appendix 28b of plate 28. Between the opposed surfaces of the fixed pouring chair 22 and the mobile pouring chain 44, high strength refractory plates 45 and 46 are interposed.
  • the plate 45 is carried by plate 24 fixed to the ladle bottom, and plate 46 is carried by plate 28 in a position overhanging the mobile chair 44.
  • the parallel edges 24b of support 24 project beyond its side opposed to the side provided with ears 24d, and thereby forms a pair of aligned frame-like supports 24f for slidably supporting rack 29 which engages the toothed sector 28c of plate 28.
  • the channel 220 of the fixed pouring chain is no longer coaxial with channel 440 of the mobile chair, but intercepted by the surface of plate 46 which, carried by plate 28, occludes the channel.
  • the refractory plates 45, 46 which are superposed and mating, preferably have an oval shape, or if not a rectangular shape or the shape of a circular crown sector.
  • the melted metal column contained in the channel 22a rests on the refractory surface of the plate, and for any angular position which may be assumed by plate 28, the molten metal never comes in contact with the metal members of the device.
  • the reciprocating movement of the rack 29 is preferably controlled by the stroke of mechanical, electromechanical, or pneumatic devices.
  • the fan-like plate 28 pivoted for oscillation at 26 with respect to the support 24, presents a toothed arch 47 engaged by a worm screw 48 which may be rotated through a shaft 49 and a joint 50.
  • 20 indicates the ladle bottom, 22 the fixed pouring chair, and 44 the mobile pouring chair or pouring bushing.
  • the toothed sector of the plate is engaged by a worm screw instead of a rack.
  • the obturator member formed by the fan-like plate 28 may assume the shape of a boxshaped disk 51 by suitable modifications to the support 24 and the cap 40, provided with a toothed crown 52 which may be engaged by a worm screw carrying a plurality of refractory sectors 53, individually provided with pouring channels 54.
  • Disk SI rotatably pivoted at 26 in a horizontal plane is capable of successively bringing the channels 54 in individual coincidence with channel 22a and to intercept the latter by the refractory areas existing between a channel 54 and the following channel.
  • the sectors 53 are interchangeable with respect to the disk 51 which supports them.
  • the angular movement of disk 51, and hence the movement of the drive members is preferably controlled by stroke end devices, which determine their exact angular positions each time.
  • the invention is not limited to the examples which have been described and illustrated for a demonstrative purpose but it comprises the embodiments which are analogous and/or equivalent to the obturator device, having angular movement, constituting the subject matter of present invention.
  • a plate having an aperture which can be brought into alignment with the opening in the container, to allow molten metal flow from the container, or alternatively moved out of alignment with the opening to terminate such flow,
  • g. means for pivoting the latter about said pin between a position in which said aperture is aligned with the opening in the container and a position in which said aperture is out of alignment with the opening in the container.
  • An obturator according to claim 1 wherein said plate has a funnel-shaped appendage surrounding said aperture, and a refractory bushing supported within said appendage, said bushing carrying an upper surface adapted to slidably engage the lower surface of the container in the region surrounding the opening in the bottom of the container.
  • An obturator according to claim 2 including an opening in said cap through which said appendage projects, said opening being elongated in the general direction of movement of said plate about said pivot pin.
  • An obturator according to claim 2 including a refractory plate carried by said bushing, said refractory plate defining said upper surface, and said refractory plate being elongated in the general direction of movement of said plate about said pivot pin.
  • An obturator according to claim 4 including a bushing within the opening in the bottom of the container, and a plate carried by said bushing and defining a lower surface thereof, said lower surface slidably engaging said upper surface of said plate bushing, and said plates having holes which correspond in size to the central holes of said bushings.
  • An obturator according to claim 4 wherein said refractory plate has a through hole, said through hole being aligned with the opening in the bottom of the container in one position of said plate, and a portion of the upper surface of said refractory plate devoid of holes is aligned with the opening in the bottom of the container in another position of said plate.
  • An obturator according to claim 1 including a thrust support between said resilient means (f) and said plate, and low friction means slidably supporting said plate on said thrust support.
  • An obturator according to claim 8 including means interconnecting said thrust support and said support whereby the former is supported by the latter.
  • said means (g) includes teeth carried by said plate at a point remote from said pivot pin, and an actuator engaging said teeth.
  • An obturator according to claim 1 wherein said plate is circular and rotatable about its center, and teeth around the periphery of said plate for rotating said plate.
  • An obturator according to claim 1 wherein said plate is sector-shaped and assembled with a plurality of similar plates to form a circular assembled plate, the apertures of said plate being spaced apart around the center of said circular assembled plate, and means for rotating said circular assembled plate to successively bring each of said apertures into alignment with the opening in the container bottom or alternatively move each of said apertures out of alignment with the container opening.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US476364A 1973-10-16 1974-06-05 Angularly movable obturator, particularly for controlling molten metal flow from containers or ladles Expired - Lifetime US3921866A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT70045/73A IT1004615B (it) 1973-10-16 1973-10-16 Otturatore con organo mobile azio nabile in movimento angolare parti colarmente per il controllo del flusso di metalli fusi da conteni tori o siviere

Publications (1)

Publication Number Publication Date
US3921866A true US3921866A (en) 1975-11-25

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US476364A Expired - Lifetime US3921866A (en) 1973-10-16 1974-06-05 Angularly movable obturator, particularly for controlling molten metal flow from containers or ladles

Country Status (9)

Country Link
US (1) US3921866A (enrdf_load_stackoverflow)
BE (1) BE819201A (enrdf_load_stackoverflow)
BR (1) BR7406169D0 (enrdf_load_stackoverflow)
DE (1) DE2427305A1 (enrdf_load_stackoverflow)
ES (1) ES204592Y (enrdf_load_stackoverflow)
FR (1) FR2247302B3 (enrdf_load_stackoverflow)
GB (1) GB1475928A (enrdf_load_stackoverflow)
IT (1) IT1004615B (enrdf_load_stackoverflow)
NL (1) NL7410712A (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4116372A (en) * 1975-11-26 1978-09-26 Kurosaki Refractories Co., Ltd. Apparatus for applying a desired sealing pressure between refractory plates of sliding nozzle
US4199086A (en) * 1977-11-15 1980-04-22 Vesuvius International Corporation Closed loop track slide gate mechanism
US4202473A (en) * 1977-11-15 1980-05-13 Vesuvius International Corporation Revolving slide gate mechanism
US4543981A (en) * 1981-11-26 1985-10-01 Uss Engineers & Consultants, Inc. Sliding gate valves
US4591080A (en) * 1982-12-14 1986-05-27 Nippon Kokan Kabushiki Kaisha Rotary nozzle system for metallurgical vessels
US4697723A (en) * 1985-04-10 1987-10-06 Stopinc Aktiengesellschaft Tensioning structure for a sliding closure unit
US4756647A (en) * 1985-03-06 1988-07-12 Kloeckner Cra Technologie Gmbh Metering slide for fine-grained solids
US4848604A (en) * 1986-08-20 1989-07-18 Stopinc Aktiengesellschaft Slide gate valve at the nozzle of a vessel containing molten metal
US4991753A (en) * 1987-03-03 1991-02-12 Nkk Corporation Door-type rotary nozzle
EP1029618A4 (en) * 1997-10-31 2004-03-31 Nippon Kokan Kk DEVICE FOR CONTROLLING THE POURING OF MELT AND SLIDER PLATE FOR USE IN THIS DEVICE
EP1698412A4 (en) * 2003-12-24 2007-04-04 Jfe Eng Corp DEVICE FOR CONTROLLING THE AMOUNT OF A CAST METAL MELT
US11654480B2 (en) 2018-06-26 2023-05-23 Refractory Intellectual Property Gmbh & Co. Kg Sliding closure for a metallurgical vessel, preferably a distributor vessel for a continuous casting facility

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5477237A (en) * 1977-11-28 1979-06-20 Shinagawa Refractories Co Fannshaped multiihole slideespray brick and sliding nozzle apparatus
DE2840171C3 (de) * 1978-09-15 1981-06-04 Stahlwerke Röchling-Burbach GmbH, 6620 Völklingen Verschlußvorrichtung für den Bodenausguß von Gießpfannen
JPS6045030B2 (ja) * 1979-04-13 1985-10-07 日本鋼管株式会社 扉式ロ−タリ−ノズル
CH640442A5 (de) * 1979-05-25 1984-01-13 Stopinc Ag Drehschiebeverschluss fuer metallurgische gefaesse, insbesondere stahlgiesspfannen.
DE3423156C1 (de) * 1984-06-22 1985-10-10 Metacon AG, Zürich Schwenkschieber fuer den Ausguss metallurgischer Gefaesse
JPH0335481Y2 (enrdf_load_stackoverflow) * 1984-09-11 1991-07-26
DE3528431C1 (de) * 1985-08-08 1987-03-26 Stopinc Ag Verspanneinrichtung fuer Schieberverschluesse
IT1240587B (it) * 1990-03-02 1993-12-17 Nuova Sanac S.P.A. Scaricatore a cassetto per siviere e simili, a molle di pressione laterale

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US966310A (en) * 1910-04-27 1910-08-02 Reuben Marshall Clark Gate or cut-off for cupolas.
US2360389A (en) * 1942-12-29 1944-10-17 Charles A Bergman Valve
US3565299A (en) * 1968-06-18 1971-02-23 Metacon Ag Closure device for the bottom outlet opening of a casting ladle
US3760992A (en) * 1971-06-09 1973-09-25 H Bieri Rotary outlet valve for metallurgical ladles
US3764047A (en) * 1971-11-12 1973-10-09 Nippon Kokan Kk Rotary nozzle for ladle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US966310A (en) * 1910-04-27 1910-08-02 Reuben Marshall Clark Gate or cut-off for cupolas.
US2360389A (en) * 1942-12-29 1944-10-17 Charles A Bergman Valve
US3565299A (en) * 1968-06-18 1971-02-23 Metacon Ag Closure device for the bottom outlet opening of a casting ladle
US3760992A (en) * 1971-06-09 1973-09-25 H Bieri Rotary outlet valve for metallurgical ladles
US3764047A (en) * 1971-11-12 1973-10-09 Nippon Kokan Kk Rotary nozzle for ladle

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4116372A (en) * 1975-11-26 1978-09-26 Kurosaki Refractories Co., Ltd. Apparatus for applying a desired sealing pressure between refractory plates of sliding nozzle
US4233718A (en) * 1975-11-26 1980-11-18 Kurosaki Refractories Co. Ltd. Method for applying a desired sealing pressure between refractory plates of sliding nozzle
US4199086A (en) * 1977-11-15 1980-04-22 Vesuvius International Corporation Closed loop track slide gate mechanism
US4202473A (en) * 1977-11-15 1980-05-13 Vesuvius International Corporation Revolving slide gate mechanism
AU576290B2 (en) * 1981-11-26 1988-08-18 Uss Engineers And Consultants, Inc. Sliding gate valve for molten metal
US4543981A (en) * 1981-11-26 1985-10-01 Uss Engineers & Consultants, Inc. Sliding gate valves
US4591080A (en) * 1982-12-14 1986-05-27 Nippon Kokan Kabushiki Kaisha Rotary nozzle system for metallurgical vessels
US4756647A (en) * 1985-03-06 1988-07-12 Kloeckner Cra Technologie Gmbh Metering slide for fine-grained solids
US4697723A (en) * 1985-04-10 1987-10-06 Stopinc Aktiengesellschaft Tensioning structure for a sliding closure unit
US4848604A (en) * 1986-08-20 1989-07-18 Stopinc Aktiengesellschaft Slide gate valve at the nozzle of a vessel containing molten metal
US4991753A (en) * 1987-03-03 1991-02-12 Nkk Corporation Door-type rotary nozzle
EP1029618A4 (en) * 1997-10-31 2004-03-31 Nippon Kokan Kk DEVICE FOR CONTROLLING THE POURING OF MELT AND SLIDER PLATE FOR USE IN THIS DEVICE
EP1698412A4 (en) * 2003-12-24 2007-04-04 Jfe Eng Corp DEVICE FOR CONTROLLING THE AMOUNT OF A CAST METAL MELT
US20070176335A1 (en) * 2003-12-24 2007-08-02 Tsuneo Kondo Poured molten metal quantity control device
US7546937B2 (en) 2003-12-24 2009-06-16 Jfe Engineering Corporation Poured molten metal quantity control device
US11654480B2 (en) 2018-06-26 2023-05-23 Refractory Intellectual Property Gmbh & Co. Kg Sliding closure for a metallurgical vessel, preferably a distributor vessel for a continuous casting facility

Also Published As

Publication number Publication date
BE819201A (fr) 1974-12-16
DE2427305A1 (de) 1975-04-17
ES204592Y (es) 1976-05-01
ES204592U (es) 1976-01-16
FR2247302B3 (enrdf_load_stackoverflow) 1977-05-06
GB1475928A (en) 1977-06-10
FR2247302A1 (enrdf_load_stackoverflow) 1975-05-09
NL7410712A (nl) 1975-04-18
BR7406169D0 (pt) 1975-08-05
IT1004615B (it) 1976-07-20

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