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
  • 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
  • B22D41/24—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 rectilinearly movable plate

Definitions

• the invention relates to a ladle slide valve, consisting of a housing, a fixedly mounted head plate and a slide plate which can be moved relative to it, which for this purpose is held within a sliding frame which can be moved relative to the housing and can be pressed against the head plate by means of spring elements, in particular thermodynamic spring elements is.
• This ladle slide is characterized by a mounting plate 1 fastened to the underside of the casting vessel, not shown, within which an interchangeable ring 34 made of refractory material is placed, a slide housing 2, a slide frame 5 and a stationary head plate K2 and a slide plate that can be displaced relative to it Kl.
• the slide housing 2 is composed of side boundary walls 6 and a base plate 3.
• the slide frame 5 comprises a plate 8 extending parallel to the slide plate Kl with sleeve-like receiving pockets 9 for receiving thermodynamic spring elements 10, which are on the underside of the slide plate Kl on the one hand and on the bottom plate 4 of the slide frame 5 on the other hand support by pressing the slide plate Kl against the head plate K2.
• thermodynamic spring elements 10 are assigned pot-like recesses 12, into which an axial extension of the thermodynamic spring elements 10 can extend.
• thermodynamic spring elements 10 are supported at the upper edge of the recesses 12 by means of a support disk 13.
• the slide plate together with the housing 2 and slide frame 5 can be swiveled relative to the head plate K2.
• the locking device assigned to this swivel mechanism is identified in FIG. 4 by the reference number 11.
• a heat-insulating protective plate 7 extends below the housing 2.
• the sliding frame 5 is mounted so that it can move longitudinally within the housing 2.
• the bottom plate 3 of the housing 2 comprises flat-band-like slide rails 14 on the inside, while the bottom plate 4 of the slide frame 5 has flat-band-like slide rails 15 on the outside or on its underside.
• These two slide rails 14, 15 also define a small gap 16 between the underside of the base plate 4 of the slide frame 5 and the inside or top of the base plate 3 of the housing 2.
• the slide frame is formed in one piece, the bottom defining a kind of web grate.
• a separate base plate is unnecessary both for the sliding frame and for the housing.
• the tar originating from the slide plate can drip downwards without any slide parts, in particular moving parts, being contaminated.
• the floor is defined by support webs or plates assigned to the spring elements, but is also designed to be open.
• thermodynamic spring elements are of particular importance, since this construction allows simple installation and removal of the thermodynamic spring elements on the one hand and, in particular, simple replacement thereof as a structural unit.
• position pattern of the thermodynamic spring elements can also be changed in a simple manner, namely by using perforated plates with differently arranged perforations for the thermodynamic spring elements.
• the dirt-intensive receiving pockets for the thermodynamic spring elements and the support disks are also not required to support them on the base plate of the slide frame.
• the thermodynamic spring elements are accordingly positioned so that they are supported at the nodes or intersections of the webs of the sliding frame defining the web-like floor.
• Figure 1 shows the essential part of a slide designed according to the invention in longitudinal section.
• Figure 2 shows a part of the trough-shaped slide frame in a perspective bottom view.
• thermodynamic spring elements perforated plate and pressure plate in a perspective partial bottom view
• Fig. 5 shows a part of a conventional ladle slide in longitudinal section.
• the sliding frame within which the slide plate k1 is positioned, is designed in the manner of a trough, the upper longitudinal edges 17 of which project laterally outwards and have sliding surfaces 18 on their undersides which correspond to sliding surfaces 19 on the housing during operation. 1 and 2, the trough-shaped sliding frame is identified by the reference number 20. Furthermore, in the illustrated embodiment, the sliding surfaces 18 and 19 each limit V-shaped grooves, between which a sliding rod 21 is arranged, which has an approximately square cross section.
• This slide rod is preferably made of highly slidable material, e.g. B. bronze or the like.
• sliding surfaces 18, 19 by means of flat-band-type sliding rails corresponding to the sliding rails in the prior art.
• the sliding frame-side sliding surfaces 18 are determined by sliding rails arranged on the undersides of the laterally projecting longitudinal edges, while the housing-side sliding surfaces 19 are defined by sliding rails arranged on the facing upper side of the housing 22.
• the housing 22 is in the
• Fig. 1 shown embodiment reduced to a rectangular hollow box profile.
• a housing base plate is dispensable.
• a separate sliding frame base plate is also missing in the specific embodiment, since the sliding frame is produced as a one-piece cast steel part.
• the bottom 23 of the trough-shaped slide frame 20 is designed in the manner of a web grate.
• the thermodynamic spring elements 10 also present here, by means of which the slide plate K1 is pressed against the head plate K2 during operation, are supported on the sliding frame side at the nodes or intersection points 24 of the webs 25 defining the web 23. This eliminates the need for associated spring washers, as z. B. in the prior art of FIG. 4 are necessary.
• thermodynamic spring elements 10 are thus effective between the pressure plate 26 and the bottom 23 of the trough-shaped slide frame 20.
• thermodynamic spring elements 10 are held in position by a perforated plate 27 extending parallel to the bottom 23 of the trough-shaped sliding frame 20 or parallel to the slide plate K1 or also parallel to the pressure plate 26.
• the thermodynamic spring elements 10 can be in the holes 28 of the perforated plate 27 be clamped so that the spring elements 10 together with the perforated plate 27 can be assembled, disassembled or exchanged as a structural unit without the risk of them falling out of the perforated plate or the holes 28 thereof.
• Perforated plate 27 / spring elements 10 is extremely user-friendly with regard to handling.
• Perforated plates can be provided with holes arranged according to different patterns, which need only be replaced if necessary after being equipped with spring elements.
• the holes 28 of the hole plate 27 are always assigned to intersection points 24 in the bottom 23 of the slide frame 20.
• the perforated plate 27 extends parallel to the pressure plate 26 at only a small distance from it.
• the sliding surfaces mentioned are approximately at the level of the slide plate K 1, namely - as already mentioned - outside the sliding frame 20.
• the bottom openings 28 are defined between the bottom webs 25.
• the perforated plate 27 can be held in position relative to the pressure plate 26 by means of a wedge lock 29.
• a wedge lock 29 This is defined by a tab 30 on the underside of the pressure plate 26 with a transverse opening 31 on the one hand and a wedge 32 which can be inserted into the transverse opening 31 on the other hand.
• the tab 30 extends in the assembled state through a corresponding opening 33 in the perforated plate 27.
• the wedge 32 is designed as a flat wedge and serves for clamping locking of the perforated plate 27 relative to the pressure plate 26.
• the distance between the perforated plate 27 and the pressure plate 26 is defined by a radially projecting peripheral edge 34 on the side of the thermodynamic spring elements 10 facing the slide plate K 1.
• This peripheral edge 34 has a diameter that is larger than the inner diameter of the holes 28 assigned to the spring elements 10 in the perforated plate 27.
• the peripheral edge 34 extends between the perforated plate 27 and the pressure plate 26 as shown in FIG Fig. 1 is shown.
• the perforated plate 27 is pressed against the peripheral edges 34 of the thermodynamic spring elements 10 by means of the flat wedge 33, and is thus held at a distance from the pressure plate 26 determined by the height of the peripheral edges 34.
• Two wedge locks 29 of the type described are preferably provided, each at two opposite ends of the perforated plate 27.
• FIG. 4 shows a slide in bottom view, parts which have already been described with reference to the preceding figures being provided with the same reference numbers in FIG. 4.
• This embodiment differs from the above-described construction on the one hand in that the sliding frame 20 is a steel plate welded construction and on the other hand in that the bottom 23 of the sliding frame through the bottom surface only in the effective area of the spring elements 10 for supporting the same on the sliding frame covering support webs or web plate 35 is defined.
• This plate comprises a central window 36, in the area of which no spring elements 10 are arranged.
• the remaining areas 37, 38 of the floor, in which no spring elements 10 are effective, are also present open so that tar or the like can drip down freely.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
• Braking Arrangements (AREA)
• Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
• Moulds For Moulding Plastics Or The Like (AREA)
• Pens And Brushes (AREA)

Priority Applications (5)

Applications Claiming Priority (4)

Publications (1)

Family

ID=26015359

Family Applications (1)

Country Status (7)

Cited By (1)

Citations (6)

• 1996
  • 1996-05-22 CZ CZ973704A patent/CZ284888B6/cs not_active IP Right Cessation
  • 1996-05-22 ES ES96917404T patent/ES2162065T3/es not_active Expired - Lifetime
  • 1996-05-22 WO PCT/EP1996/002207 patent/WO1996037323A1/de active IP Right Grant
  • 1996-05-22 PL PL96323833A patent/PL179953B1/pl not_active IP Right Cessation
  • 1996-05-22 SK SK1582-97A patent/SK282404B6/sk unknown
  • 1996-05-22 AT AT96917404T patent/ATE203698T1/de not_active IP Right Cessation
  • 1996-05-22 EP EP96917404A patent/EP0830224B1/de not_active Expired - Lifetime

Patent Citations (6)

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