EP0378818B1 - Drehschieberverschluss für mit einer Bodenausgussöffnung versehene Behälter - Google Patents

Drehschieberverschluss für mit einer Bodenausgussöffnung versehene Behälter Download PDF

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Publication number
EP0378818B1
EP0378818B1 EP89123198A EP89123198A EP0378818B1 EP 0378818 B1 EP0378818 B1 EP 0378818B1 EP 89123198 A EP89123198 A EP 89123198A EP 89123198 A EP89123198 A EP 89123198A EP 0378818 B1 EP0378818 B1 EP 0378818B1
Authority
EP
European Patent Office
Prior art keywords
slide valve
casing
discharge
axis
block
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
EP89123198A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0378818A1 (de
Inventor
Dieter Beckers
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.)
Martin and Pagenstecher AG
Original Assignee
Martin and Pagenstecher 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 Martin and Pagenstecher AG filed Critical Martin and Pagenstecher AG
Priority to AT89123198T priority Critical patent/ATE77280T1/de
Publication of EP0378818A1 publication Critical patent/EP0378818A1/de
Application granted granted Critical
Publication of EP0378818B1 publication Critical patent/EP0378818B1/de
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 rotary slide closure for containers provided with a bottom pouring opening for molten metal, consisting of a fixed refractory cobblestone with a flow channel and a close-fitting, rotatable refractory pouring stone with a flow channel, the axis of rotation of the pouring stone with the vertical central axis of the flow channel at an acute angle forms and the intersection of the axis of rotation with the central axis of the flow channel falls into the cross-sectional plane of the outlet opening of the flow channel in the pouring stone.
  • a rotary slide valve of this type is known from DE-AS 20 43 588, which, however, has disadvantages.
  • the perforated plate and slide plate designed as a frustoconical body, are arranged in a slide housing, consisting of an upper housing part and a lower housing part, the two parts being connected to one another by a screw connection.
  • screw connections are disadvantageous for rough steelworks.
  • the adjustment of the axial position of the valve housing with respect to the opening in the bottom of the container is made by intermediate rings. Such a setting is impractical for steelworks operation and can lead to inaccuracies in installation.
  • the perforated plate and the slide plate are also rigidly arranged in the slide housing, so that uniform contact of the sealing and uniform surface of the perforated plate or closer plate is difficult to achieve, especially since refractory parts can have dimensional tolerances due to the manufacturing process.
  • the present invention has set itself the task of designing a rotary slide valve closure of the type described in the introduction such that it no longer has the disadvantages described.
  • the rotary slide valve closure should have an uncomplicated structure with a reduced overall height.
  • an uncomplicated assembly and disassembly of the rotary slide valve at the pouring spout of the vessel, a simple removal of used refractory parts and a quick installation of new refractory parts as well as an even contact of the sealing surfaces of the perforated and slide plate are aimed for.
  • a housing is pivotally mounted on a mounting plate attached to the bottom of the container via a hinge arrangement and can be closed by a closure member, for pressing the sealing and sliding surface of the pouring stone against the sealing and sliding surface of the fixed cobblestone.
  • a drivable, annular driver housing is rotatably arranged, which receives the frusto-conical pouring stone.
  • the peripheral surface of the pouring stone is spherical in the upper part below its sealing surface, while the inner surface of the driver housing, which carries the pouring stone, is correspondingly concave.
  • a worm gear is provided for the rotation of the driver housing and the pouring stone arranged in a rotationally fixed manner.
  • the joint arrangement for opening and closing the housing has a pivot axis, which at the same time represents the axis of the worm gear with worm, an associated worm gear ring being arranged on the driver housing in the lower part, which meshes with the worm.
  • the driver housing itself has a spherical contour on the outside in the lower section and lies on a correspondingly trough-shaped slide ring on the inner wall of the housing.
  • the closure member of the housing is designed according to claim 5 as a threaded rod with a spherical head, the head being movably held in an opening in the mounting plate.
  • a housing with spring assembly and adjusting nut is arranged on the threaded rod, which is connected to a corresponding recess in the housing.
  • a support ring with contact surfaces is arranged above the mounting plate for receiving the refractory cobblestone, the cobblestone being locked by a bolt which engages in a bore thereof.
  • the rotary slide closure according to the invention is arranged on the bottom of a vessel 1.
  • the vessel can be, for example, a ladle, as used in steelworks and foundries, or an intermediate vessel, such as is used in continuous casting.
  • the bottom of the vessel 1 consists of an outer metal jacket 2 with an inner refractory lining 3. This has a refractory bottom brick 5 with a refractory perforated brick 6 in the area of a flow opening 4 in the metal jacket 2.
  • the main components of the rotary slide valve closure are, as shown in particular in FIG. 1, a stationary cobblestone 7, a rotatable pouring stone 8, a mounting plate 9 with a support ring 10, a slide housing 11 pivotably arranged on the mounting plate 9 with associated joint and locking arrangements 12 and 13, and a driver housing 15 moved by a worm gear 14 and carrying the refractory pouring stone 8.
  • the axis of rotation 16 of the pouring stone 8 and the central axis of the flow channels 17 and 18 of the cobblestone 7 and pouring stone 8 intersect in the plane of the outer outlet opening 19 of the flow channel 18 of the pouring stone 8 and run apart at an acute angle to the interior of the container Rotation of the pouring stone 8 about the axis of rotation 16, the opening of the flow channel 18 of the pouring stone 8 lying on the sliding and sealing surface 20 is guided in a circular arc and the flow channel 18 is opened completely or in part or shut off, while the outlet opening 19 of the flow channel 18 maintains its position so that the emerging jet of the melt does not migrate.
  • the mounting plate 9, which has an opening 21, is fastened below the opening 4 on the metal jacket 2, as shown in particular in FIG. 3.
  • the mounting plate 9 carries on its upper side the support ring 10 attached to it, which protrudes into the opening 4 in the metal jacket 2 and connects to the refractory floor stone 5.
  • the locking arrangement 13 consists of a threaded rod 22 with a ball head 23 and a housing 24 with a spring assembly and associated adjusting nut 25.
  • the ball head 23 is held on the edge of the mounting plate 9 in a correspondingly designed opening 26 by means of a locking plate 27.
  • the slide housing 11 is annular. It has on one side a recess 28 with a contact surface 29 for the closure arrangement 13 and on the other side a tubular section 30. This takes up a pivot axis 31 of the joint arrangement 12, which at the same time forms the axis of the worm gear 14 with the worm 32.
  • the axis 31 is mounted in the two lateral bearing eyes 33 of the mounting plate 9. So that the axis 31 can perform its double function as a pivot axis for the joint arrangement 12 and as an axis for the worm gear 14, there are two tubular bearings 34, which are connected via flanges 35 to the tubular section 30 of the slide housing 11 by screws. They each have an outer Bearing surface 36 for the pivoting movement in the bearing eyes 33 and an inner bearing surface 37 for the rotational movement of the axis 31 as the drive axis of the worm gear.
  • a connecting piece 38 is fastened to a bearing eye 33 and has a flange 39; a drive motor 40 with reduction gear is attached to the flange 39 via a counter flange 41.
  • the end of the axle 31 projecting into the connecting piece 38 is connected to the stub shaft of the drive shaft 42 of the drive motor 40 via a coupling piece 43.
  • the bearing eyes 33, as shown in FIG. 3, and the connecting piece 38 are open at the side.
  • a helical lock 44 is used to lock the bearings 34 in the bearing eyes 33.
  • the refractory cobblestone 7 which has a metallic banding ring, is seated in the support ring 10. Its surface 45 lying towards the inside of the vessel lies against the contact surface 46 of the support ring 10. A bolt 47 held in the support ring 10 and which engages in a bore 48 in the cobblestone 7 serves for the stationary mounting of the cobblestone 7.
  • the refractory pouring stone 8 is arranged in the driver housing 15, which has an annular configuration. Its circumferential surface 49 is spherical in the upper section below the sealing and sliding surface 20.
  • the inner surface 50 of the driver housing 15, which carries the pouring stone 8, is correspondingly hollow. In this way it is ensured that when the slide housing 11 is closed, the pouring stone 8 can set in the spherical guide in the event of any manufacturing-related dimensional deviations and with its sliding and sealing surface 20 it fits tightly against the corresponding one Surface of the cobblestone 7 creates.
  • the driver housing 15 is rotatably mounted in the slide housing 11.
  • the driver housing 15 has an outer spherical section 51.
  • a correspondingly spherical sliding ring 52 which is arranged on the inner wall 53 of the valve housing 11, serves as a sliding bearing for the rotational movement of the driver housing 15.
  • the driver housing 15 To rotate the driver housing 15, it is equipped with a ring gear 54, the worm 32 being in engagement with the ring gear 54 on the axis 31 of the worm gear 14.
  • FIG. 1 further shows that the driver housing has recesses 55 on the inside in the upper part, into which projections 56 on the pouring stone 8 engage. When the pouring stone 8 is rotated, this prevents it from slipping in the driver housing 15.
  • the threaded rod 22 with the housing 24 arranged thereon is pushed into the recess 28 in the housing 11.
  • the housing 24 with the spring assembly arranged therein lies on the contact surface 29.
  • the associated adjusting nut 25 on the threaded rod 22 is then tightened by the operator with a torque wrench until the set contact force between the sliding and sealing surfaces 20 of the cobblestone 7 and the pouring stone 8 is reached.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
EP89123198A 1988-12-23 1989-12-15 Drehschieberverschluss für mit einer Bodenausgussöffnung versehene Behälter Expired - Lifetime EP0378818B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89123198T ATE77280T1 (de) 1988-12-23 1989-12-15 Drehschieberverschluss fuer mit einer bodenausgussoeffnung versehene behaelter.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3843456 1988-12-23
DE3843456 1988-12-23
DE3843865 1988-12-24
DE3843865A DE3843865C1 (enrdf_load_stackoverflow) 1988-12-23 1988-12-24

Publications (2)

Publication Number Publication Date
EP0378818A1 EP0378818A1 (de) 1990-07-25
EP0378818B1 true EP0378818B1 (de) 1992-06-17

Family

ID=25875544

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89123198A Expired - Lifetime EP0378818B1 (de) 1988-12-23 1989-12-15 Drehschieberverschluss für mit einer Bodenausgussöffnung versehene Behälter

Country Status (4)

Country Link
US (1) US5027987A (enrdf_load_stackoverflow)
EP (1) EP0378818B1 (enrdf_load_stackoverflow)
JP (1) JPH02263563A (enrdf_load_stackoverflow)
DE (2) DE3843865C1 (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04367367A (ja) * 1991-06-11 1992-12-18 Nkk Corp ロータリノズル
JP2579459Y2 (ja) * 1992-01-29 1998-08-27 鋼管機械工業株式会社 溶融金属容器の弁開閉装置における基盤の固定構造
JP2805559B2 (ja) * 1992-01-29 1998-09-30 鋼管機械工業株式会社 ロータリノズル
DE4231692C1 (de) * 1992-09-22 1994-03-24 Dolomitwerke Gmbh Drehverschluß für metallurgische Gefäße

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE384988C (de) * 1922-03-30 1923-12-04 Ernst Herbert Kuehne Abflussgesperre fuer Schmelzoefen
DE1910247A1 (de) * 1969-02-28 1970-09-10 Neitzel Dipl Ing Martin Vorrichtung und Verfahren zum Abgiessen von metallurgischen Schmelzen und aehnlichen Produkten
DE2043588C3 (de) * 1970-09-03 1973-11-08 Didier-Werke Ag, 6200 Wiesbaden Drehschieberverschluß an Behaltern fur flussige Schmelze
CH553610A (de) * 1971-06-09 1974-09-13 Bieri Hans Verschlusseinrichtung fuer die am boden angeordneten auslassoeffnungen von giesspfannen oder zwischenbehaeltern.
US3912134A (en) * 1974-04-29 1975-10-14 Danieli Off Mecc Rotary sliding gate valve for molten metal
US4556157A (en) * 1982-05-24 1985-12-03 Flo-Con Systems, Inc. Pressure fluid teeming valve and method
JPS59228971A (ja) * 1983-06-13 1984-12-22 Nippon Kokan Kk <Nkk> 扉式ロ−タリ−ノズル
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

Also Published As

Publication number Publication date
JPH02263563A (ja) 1990-10-26
DE58901700D1 (de) 1992-07-23
EP0378818A1 (de) 1990-07-25
DE3843865C1 (enrdf_load_stackoverflow) 1990-02-22
US5027987A (en) 1991-07-02

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