US3710992A - Rotary slide closure for liquid melt container - Google Patents

Rotary slide closure for liquid melt container Download PDF

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Publication number
US3710992A
US3710992A US00168899A US3710992DA US3710992A US 3710992 A US3710992 A US 3710992A US 00168899 A US00168899 A US 00168899A US 3710992D A US3710992D A US 3710992DA US 3710992 A US3710992 A US 3710992A
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United States
Prior art keywords
rotary slide
plate
slide plate
housing portion
closure
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
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US00168899A
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English (en)
Inventor
R Hoffmann
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
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Didier Werke AG
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Publication date
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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

Definitions

  • a rotary slide closure for a liquid melt container has a 5 fixed plate with a through-flow channel at the outlet of ';the container.
  • a rotary slide plate is mounted in con- 15, tact with and adjacent the fixed stationary plate also lhaving a through-flow channel.
  • the through-flow channels may be brought into mutual connection or edisconnection for throttling the melt.
  • the invention relates to a rotary slide closure on liquid melt containers, consisting of a stationary apertured plate and a rotary slide plate tightly adjacent to the apertured plate on the outside, with at least one through-flow channel in each case.
  • the customary stopper rod closure which is situated inside the liquid melt during the pouring casting process, is subjected to steadily increasing stresses, which is based to a significant extent on the longer periods during which the stopper rod is situated inside the melt as well as on the higher tapping and pouring casting temperatures. Consequently, the slide closures that are not subjected to such stresses owing to their arrangement outside the liquid metal, are gradually replacing the known stopper rods.
  • slide closures of the prior art are associated with the problem of lateral displacement of the discharge opening and, therewith, of the position of the outflowing jet, when the slide plate is shifted in the direction of greater or lesser throttling.
  • a further known solution of the above-mentioned problem consists in arranging a funnel under the slide plate of a rotary slide, which funnel is connected to the rotary slide plate in a position such that the center axis of its discharge opening coincides with the axis of rotation of the slide plate.
  • the jet discharged from the slide plate drops on the funnel wall and, consequently, the latter is damaged very rapidly.
  • the funnel since the funnel is relatively cool, the deposition of the cooled metal must be taken into account.
  • the funnel also constitutes an additional structural component.
  • An object of the present invention is to produce a rotary slide closure of the type mentioned which solves the problem of preserving unchanged the position of the outflow opening in spite of the displacement of the slide plate, with simpler means and without the disadvantages indicated above, in such a manner that the axis of rotation of the slide plate forms an acute angle with the vertical perpendicular center axes of the through-flow channels.
  • the proposed solution attains the advantage that, in the case where the slide is fully opened, the outflowing melt may pass in free fall vertically through the through-flow channel and, in the case where the slide is in a throttling position, the melt may pass through the said channel in an almost vertical direction, without the necessity of changing the direction of the melt in this connection.
  • the outlet opening of the slide plate through-flow channel retains its position in every position of the slide. Accordingly, the outflowing pouring casting jet is not displaced in the case of throttling.
  • the sealing and sliding surface between the apertured and slide plates is situated perpendicularly in relation to the axis of rotation, a position of the sealing and sliding surface deviating from the horizontal results in the vertical position of the opened through-flow channel.
  • the oblique position of the sealing and sliding surface is favorable insofar as the torque exerted by the slide plate on the fixed apertured plate, whose center axis intersects the axis of rotation at an acute angle, is lesser than in the case of axial-parallel arrangement of the plates, owing to the friction of the sealing and sliding surface.
  • the apertured and slide plates consist in a known manner of frustum elements, with the larger end surfaces on the sides of the common sealing-and sliding surface, and are held and braced in relation to each other by means of the inner cone surfaces of housing parts (with which they form an assembly unit), the apertured plate being clamped and supported in the housing independently of the pressure of the slide plate.
  • the apertured plate is suitably situated on a lower housing portion which is connected detachably to an upper housing portion engaging the outer cone of the apertured plate. Consequently, the
  • a preferred embodiment of the invention takes into account this requirement in such a manner that the slide plate is included in a supporting ring provided with a fitting inner cone and a cylindrical jacket surface, which ring is supported radially in a cylindrical inner bore of the lower housing portion and can be inserted from outside into the inner bore, by means of a face-adjacent tightening disk and tightening screws (that can be screwed into the lower portion of the housing and act on the tightening disk), until the slide plate rests closely tightly on the apertured plate.
  • the preferred structure of the slide closure of the invention consists in a pre-assembled component unit, occasion is given for a further proposal to develop the invention.
  • the housing is provided with flange-type peripheral elements that engage, in the manner of a bayonet catch, a suitable fitting socket on the container.
  • the axial position of the peripheral elements may be arranged changeable in relation to the housing by means of intermediate rings.
  • the preferred application of the slide closure of the invention as a pre-assembled unit offers the extraordinary advantage that known filling materials may be introduced from outside into the slide closure when such a closure is assembled. This eliminates, the unpleasant operation wherein the perforated brick stone must be filled from inside the ladle. Consequently, the filling (even when consisting of various component materials) may be effected exactly in the desired form and layer arrangement.
  • F IGJl shows a vertical cross section through a rotary slide closure of the invention arranged at the bottom of a liquid melt container
  • FIG. 2 shows a horizontal-section through the drive for the rotary actuator of the slide plate along section line II--II ofFIG. l.
  • the rotary slide closure illustrated in the drawings is arranged on a metal jacket of a-liquid melt container, in particular, a casting pouring ladle or an intermediate container (tundish) of a continuous casting apparatus, with a refractory lining 12 of the container being shown in the drawings only in the area of the outlet opening.
  • the slide closure proper consists of a fixed apertured plate 14 and a rotary slide plate 16, each pro-.
  • the peculiarity of the slide closure illustrated consists in the position of the through-flow channels 18 and 20 in relation to the axis of rotation of the slide plate, the axis being designated by the numeral 22.
  • the axis In the shown as intersecting each other in the plane of an outer opening 24 and extending apart toward the. container interior at an acute angle.
  • the line passing through this point of intersection and perpendicular to the plane of the discharge opening 24 shall be called the axis of the discharge opening; furthermore, it is coaxial with the axis of rotation 22.
  • a sealing and sliding surface 26, situated perpendicularly in relation thereto, is necessarily also inclined to the horizontal.
  • the apertured and slide plates are pre-assembled in the desired position in a slide housing which is readyfor installation.
  • Its essential components are a two-part upper housing portion 28, a lower housing portion 30 and a supporting ring 32.
  • Upper housing portion 28 consists of an annular shell provided with innerthread and a conical tubular element 28'v that can be screwed on the conical outer surface of the shell.
  • the two-part structure of the upper housing portion provides the advantage that in the case of exchange of parts'possibly merely the tubular element 28? need be replaced.
  • Lower housing portion 30 can be screwed into upper housing portion by means of a thread 34.
  • aperture plate 14 In cooperation with the conical surfaces of apertured plate 14 and upper housing part 28 or 28', that prevent a pushing of the apertured plate inward through the housing, aperture plate 14 can be firmly clamped between housing parts 28 and 30, after the apertured plate is inserted into upper housing part 28 (28), by turning and screwing-in lower housing part 30 on thread 34. Accordingly,
  • apertured plate 14 is supported basically directly on the housing.
  • conical slide plate 16 is suspended loosely above in a bore 36 of lower housing portion 30, which bore is conical in the upper portion and cylindriea] in the lower portion with its center axis coinciding with the axis of rotation 22, before the lower portion 30 is screwed into the upper housing portion 28 until the apertured plate 14 is clamped therewith.
  • the supporting ring 32 which is conical inside and cylindrical outside, is pushed then from below on the cone of slide plate 16 and tightened by means of a tightening disk 38 and a plurality of tightening screws 40 (only one being distributed through the circumference, screwed into lower housing portion 30 and provided with plate springs, 42. Since supporting ring 32 here en gages slide plate 16 and presses it against apertured plate 14, a certain desired contact pressure on the sealing and sliding surface 26 can be set by means of tightening screws 40, independently of the external forces acting on apertured plate 14.
  • Outwardly cylindrical lower housing portion 30 carries a ring 44 with peripheral Segments 45 that engage, in the manner of a bayonet catch, a fitting 46 attached to the container jacket and provided with insertion openings corresponding to peripheral segments 45.
  • Ring 44 is held on lower housing portion 30 traversed by a rack 54 between a cover plate 48 and a flange 50, the axial position of the slide housing being adjustable in relation to the opening in the container bottom by means of intermediate rings 52 between flange 50 and ring 44.
  • the rotary motion of slide plate 16 is actuated by means of a rack 54 which is supported in lower housing portion 30 and meshes with the external teeth 56 of 20 supporting ring 32.
  • rack 54 also belongs to the slide housingunit, it is provided as shown in FIG. 2 that its rear end be connected to a piston rod 60 of a hydraulic actuation cylinder 62 by means of a rapidly disengageable coupling 58, which cylinder may be connected to an extension 66 on the lower housing portion 30, likewise by means of a readily disengageable coupling 64.
  • a rotary slide closure for liquid melt containers comprising a stationary plate having a through-flow channel having a central axis, a rotary slide plate mounted in contact with and adjacent said stationary plate also having a through-flow channel having a central axis, means for bringing said through-flow channels into mutual connection, said rotary slide plate having a discharge opening for its through-flow channel, said discharge opening is coaxial in relation to the axis of rotation of said rotary slide plate, the axis of rotation (22) of said slide plate (16) forming an acute angle with said central axes of said through-flow channels (18,20).
  • a rotary slide closure as set forth in claim 2 wherein a housing having inner cone portions (28, 30, 32), is provided and said stationary and rotary slide plates (14,16) comprise frustum-shaped elements with the larger end surfaces at the sides of said sealing and sliding surface (26), and said plates are held and braced in relation to each other by means of said inner cone portions of said housing, with which they form an assembly unit, said stationary plate (14) being clamped and supported in said housing independently of said slide plate (16).
  • a rotary slide closure as set forth in claim I wherein a supporting ring (32) supports said rotary slide plate (16), said ring having a fitting inner cone and a cylindrical surface, said lower housing portion (30) having a cylindrical inner bore (36) in which said ring is supported radially whereby said ring may be inserted from outside into said inner bore 36), a tightening disk (38) cooperating with said ring and tightening screws (40) screwed into said lower housing portion (30) acting on said tightening disk to urge said slide plate 16 tightly against said stationary plate (14).
  • a rotary slide closure as set forth in claim 1 wherein said means for bringing said through-flow channels into mutual connection comprise an actuation cylinder (60, 62) serving as the rotary drive of said slide plate (16), a rack (54) supported in the lower portion of said housing portion (30) actuated by said cylinder and a supporting ring (32) for said slide plate having external teeth (56) cooperating with said rack.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
US00168899A 1970-09-03 1971-08-04 Rotary slide closure for liquid melt container Expired - Lifetime US3710992A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2043588A DE2043588C3 (de) 1970-09-03 1970-09-03 Drehschieberverschluß an Behaltern fur flussige Schmelze

Publications (1)

Publication Number Publication Date
US3710992A true US3710992A (en) 1973-01-16

Family

ID=5781410

Family Applications (1)

Application Number Title Priority Date Filing Date
US00168899A Expired - Lifetime US3710992A (en) 1970-09-03 1971-08-04 Rotary slide closure for liquid melt container

Country Status (6)

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US (1) US3710992A (show.php)
CH (1) CH551826A (show.php)
DE (1) DE2043588C3 (show.php)
FR (1) FR2105215B1 (show.php)
GB (1) GB1314746A (show.php)
SE (1) SE369583B (show.php)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5027987A (en) * 1988-12-23 1991-07-02 Martin & Pagenstecher Gmbh Rotary valve closure for a container having a bottom discharge opening
US5038977A (en) * 1988-12-23 1991-08-13 Martin & Pagenstecher Gmbh Pair of refractory blocks for a rotary slide valve closure
EP0518586A1 (en) * 1991-06-11 1992-12-16 Nippon Rotary Nozzle Co.,Ltd. Rotary nozzle
US5494254A (en) * 1994-09-06 1996-02-27 Jdl Enterprises Rotary shut off valve
US6877294B2 (en) 2002-11-04 2005-04-12 Kimberly-Clark Worldwide, Inc. Automatic repacking and accumulation system

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1595815A (en) * 1978-03-21 1981-08-19 Vesuvius Int Corp Flow control device for molten metal
JPS5551285A (en) * 1978-10-12 1980-04-14 Nippon Kokan Kk Sliding open*close device with dismantling unit
CH649149A5 (de) * 1980-05-22 1985-04-30 Stopinc Ag Drehschiebeverschluss fuer schmelzegefaesse.
CH661456A5 (de) * 1983-01-11 1987-07-31 Stopinc Ag Drehverschluss fuer schmelzfluessige werkstoffe, insbesondere metall-schmelzen.
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
GB8701158D0 (en) * 1987-01-20 1987-02-25 Distington Eng Contracting Ltd Vessels
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
BE1001778A3 (fr) * 1988-06-09 1990-03-06 Internat Ind Engineering S A Dispositif d'obturation a cle tournante.
GB2226263B (en) * 1988-12-22 1992-11-04 Steel Castings Res Valve for vessel outlet

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB588396A (en) * 1945-02-15 1947-05-21 Alexander Bell Jack An improved form of full way plug cock
DE1910247A1 (de) * 1969-02-28 1970-09-10 Neitzel Dipl Ing Martin Vorrichtung und Verfahren zum Abgiessen von metallurgischen Schmelzen und aehnlichen Produkten

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB588396A (en) * 1945-02-15 1947-05-21 Alexander Bell Jack An improved form of full way plug cock
DE1910247A1 (de) * 1969-02-28 1970-09-10 Neitzel Dipl Ing Martin Vorrichtung und Verfahren zum Abgiessen von metallurgischen Schmelzen und aehnlichen Produkten

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5027987A (en) * 1988-12-23 1991-07-02 Martin & Pagenstecher Gmbh Rotary valve closure for a container having a bottom discharge opening
US5038977A (en) * 1988-12-23 1991-08-13 Martin & Pagenstecher Gmbh Pair of refractory blocks for a rotary slide valve closure
EP0518586A1 (en) * 1991-06-11 1992-12-16 Nippon Rotary Nozzle Co.,Ltd. Rotary nozzle
US5249717A (en) * 1991-06-11 1993-10-05 Nippon Rotary Nozzle Co., Ltd. Rotary nozzle
US5494254A (en) * 1994-09-06 1996-02-27 Jdl Enterprises Rotary shut off valve
US6877294B2 (en) 2002-11-04 2005-04-12 Kimberly-Clark Worldwide, Inc. Automatic repacking and accumulation system

Also Published As

Publication number Publication date
DE2043588B2 (de) 1973-04-19
DE2043588C3 (de) 1973-11-08
SE369583B (show.php) 1974-09-09
FR2105215B1 (show.php) 1975-07-11
DE2043588A1 (de) 1972-03-09
GB1314746A (en) 1973-04-26
FR2105215A1 (show.php) 1972-04-28
CH551826A (de) 1974-07-31

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