EP1950517B1 - Dosierofen mit kombinierter Reinigungs- und Befüllöffnung sowie Verfahren zum dessen Betrieb - Google Patents

Dosierofen mit kombinierter Reinigungs- und Befüllöffnung sowie Verfahren zum dessen Betrieb Download PDF

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Publication number
EP1950517B1
EP1950517B1 EP07020760.0A EP07020760A EP1950517B1 EP 1950517 B1 EP1950517 B1 EP 1950517B1 EP 07020760 A EP07020760 A EP 07020760A EP 1950517 B1 EP1950517 B1 EP 1950517B1
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EP
European Patent Office
Prior art keywords
door
opening
filling
metering furnace
closing
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.)
Active
Application number
EP07020760.0A
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German (de)
English (en)
French (fr)
Other versions
EP1950517A1 (de
Inventor
Otto Oischinger
Norbert Oischinger
Hans Walter Engel
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.)
Oischinger Apparatebau GmbH
Strikowestofen GmbH
Original Assignee
Oischinger Apparatebau GmbH
Strikowestofen GmbH
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Publication date
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Publication of EP1950517A1 publication Critical patent/EP1950517A1/de
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Publication of EP1950517B1 publication Critical patent/EP1950517B1/de
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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
    • B22D39/00—Equipment for supplying molten metal in rations
    • B22D39/06—Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by controlling the pressure above the molten metal

Definitions

  • the invention relates to a metering furnace for dispensing metered portions of a melt, in particular liquid metal, comprising an outer housing enclosing a housing interior, a refractory lining of the housing interior, which forms a trough for the molten material, a door having a door opening in Casing covers, an opening for the passage of a material discharge tube, which dips with its lower end in the melt, and at least one pressure feed opening to introduce gas pressure into the housing interior and each issue a liquefied portion of material through the discharge pipe.
  • the invention also relates to a method for operating a metering furnace.
  • Such known dosing furnaces have a box-like shape and are placed in foundries to successively fill molds.
  • the dosage of each delivered amount of melt is determined by the amount and duration of a supplied into the interior of the metering gas pressure surge, which is about 0.2 to 0.5 bar.
  • the surge results in deformation of the housing, which is minimized by reinforcing the outer walls of the housing by welded-on ribs and flanges.
  • WO 00/58680 For example, it is known to transfer liquid metal from a vehicle to a holding furnace having a fill tube that extends below the melt liquid surface.
  • the filling tube is permanently installed in the holding furnace and can not be swung away become. A cleaning opening is not shown.
  • the invention is based, to reduce the effort in a metering furnace the task. Furthermore, a low height of the filling opening of the metering furnace should be possible.
  • the invention is particularly applicable to a metering furnace housing having domed side surfaces that taper toward a front end of the housing and toward a rear end. It can be achieved that the door opening, which is in known dosing in a vertical plane, is arranged obliquely in space.
  • the door of the metering furnace is fed to a double-use, namely as a cleaning opening at standstill of the operation of the metering furnace and as a filling opening during operation. It is advantageous to choose the shape of the metering furnace so that the door opening, which serves for cleaning purposes, is inclined in space, because this favors the attachment of the filling device to the door.
  • the door is designed pivotable together with the filling device of the metering furnace, in such a way that a filling tube of the filling, which during the Operating far down into the trough of the dosing oven, is moved sufficiently far away from the door opening, so as not to disturb during the cleaning of the interior of the metering furnace.
  • the door of the metering furnace is articulated on a pair of pivot lever, which is motor-actuated.
  • the door is guided by a pivot lever linkage which allows the door and a filling tube of the filling device to be moved completely away from the door opening of the dosing oven, thus providing convenient access to the door opening of the dosing oven is presented.
  • the door as such and / or a lid of the filling device can be hermetically closed.
  • a closing hook is pivotally mounted on the door or the lid and engages when closing in a housing-fixed counter-holder.
  • an eccentric is provided, which attracts the closing hook transversely to the pivoting movement in the last phase of the closing operation.
  • Fig. 1 and 2 show a metering furnace in perspective views laterally from behind and front, which is adapted for the purposes of the invention.
  • the outer housing comprises a lower shell 1 and an upper shell 2.
  • At the front end of the housing is an opening 3 for the passage of a in Fig. 7 shown Materialabgaberohres 35 is provided which leads into the interior of the metering oven and immersed with its lower end in a trough 30, which is formed by a refractory lining of the lower shell 1.
  • a door mechanism 4 At the rear end of the metering furnace there is a door mechanism 4 to provide a door opening 40 (FIG. Fig. 6 and 8th ) sealing or release.
  • the upper shell 2 has on both sides each have a number of openings 5, which are shown here closed by a lid.
  • the openings 5 in Fig. 2 serve for example the inclusion of heating elements while in Fig. 1 an opening for supplying compressed air or gas is shown inside the metering furnace.
  • a filling opening 6 is further provided, which serves for refilling of liquid metal during the operation and which is shown here closed with a lid.
  • flange eyes 7 are still welded to the lower shell and the upper shell in order to transport the housing parts comfortably.
  • the lower shell 1 essentially comprises five welded together plates, namely two side plates 11 and 12, an outlet opening plate 13, a door opening plate 14 and a bottom plate 15.
  • the top shell 2 comprises side plates 21, 22 and a cover plate 23.
  • the basic shape of the housing can be described as a double-wedge-shaped, namely, starting from the central region of the metering furnace, the surfaces on the front end 16 (FIG. Fig. 2 ) or towards the rear end in the door opening plate 14 ( Fig. 1 ).
  • the blank of the plates 11, 12, 13 and 23 is thereby approximately trapezoidal, but partially with curved edges.
  • the plates 21, 22 have a gusset shape. After the sheet metal plates have been bent, they can easily be joined together and welded together at the edges.
  • the lower and upper shell have free edges which are intended to sealingly interlock.
  • the free edges of the upper shell 2 are designed as a groove fold 27.
  • On the door opening plate 14 is a metal strip 19 ( Fig. 6 ), to which the spring fold 17 is attached.
  • a flange 18 is welded, which serves to receive a bolt 24.
  • the bolt 24 can be used as stud bolts ( Fig. 3 ) or as a through bolt with head ( Fig. 4 ) be formed.
  • a two-legged bracket 25, which has a bore 26 for the bolt 24, used to press the spring fold 17 against the Nutfalz 27 with the interposition of a seal 29 to each other by the nut 28 of the bolt 24 is tightened.
  • Fig. 3 shows the engagement of the spring fold 17 in the Groove 27 without intermediate seal 29 and without the parts 25 and 28.
  • Fig. 4 Parts of the refractory lining 31, 32 of the metering furnace are shown. As can be seen, the thickness of the sheet metal plates is small compared to the thickness of the refractory lining.
  • the door mechanism 4 is based on the Fig. 5 and 6 explained.
  • the door opening plate 14 has a door opening 40 which is covered by a curved door 41.
  • an actuating shaft 42 which is mounted in bearing blocks 43 which are welded to the plate 14.
  • a pivot lever pair 44 are rotatably connected, at the free ends of each bearing 45 is seated, which supports a pivot axis 46, in which the door 41 is pivotally suspended.
  • a pivot lever 47 is articulated, whose lower end is connected via a pivot bearing 48 with the door 41, see Fig. 6 ,
  • the levers 44, 47 form a parallelogram and thus a parallel guide for the door 41, the upper position 41 'in Fig. 6 is indicated. In this upper position 41 'of the door, the levers 44 and 47 occupy the positions 44' and 47 '. As can be seen, while the door opening 40 is fully released.
  • a motor drive 50 This includes a double-acting pneumatic cylinder 51 and a piston rod 52, the end of which is pivotally connected to an arm 53 of the shaft 42 for the actuation thereof.
  • the piston rod 52 By retracting and retracting the piston rod 52, the lever arm 53 is pivoted back and forth and thus also the pivot lever pair 44, which leads to the arrival and removal of the door 41.
  • a hand-closing device 55 For firmly closing the door 41, a hand-closing device 55 is still provided.
  • two bearing blocks 56 are welded to the curved ends of the door 41, which support a closing shaft 57 to which a handle 58 is attached.
  • the shaft 57 is formed at its ends as an eccentric 59, on each of which an eccentric lever or locking lever 60 is seated, which is provided with a closing hook 61 (FIG. Fig. 6 ) is trained.
  • On the plate 14 each counter-holder 62 are attached, each having two welded blocks and a parallel to the plate 41 extending bolts, behind which the locking hook 61 engages.
  • the eccentric or locking lever 60 has a concentric to the shaft 57 bearing bore 63 in which a moon-shapedIförmiges bearing 64 is seated, which rests on the eccentric 59.
  • a moon-shapedIförmiges bearing 64 is seated, which rests on the eccentric 59.
  • pins 65, 66 are pins 65, 66 (FIG. Fig. 5 ) in order to adjust the position of the eccentric or closing lever correctly and to form stops for the pivoting of the shaft 57.
  • the opening and closing operation of the door is as follows: By raising the handle 58, the shaft 57 is pivoted so that the eccentric 59 loosens the locking lever 60 and moves out of engagement with the counter-holder pin 62. Now, when the pneumatic cylinder 51 is actuated, this leads to the rotation of the shaft 42 and thus pivoting of the lever pair 44, whereby the door 41 in the position 41 '(FIG. Fig. 6 ) is raised. To close the door, the motor drive 50 is controlled in the opposite direction, whereby the lever pair 44 lowers the door 41 in its closed position.
  • the closing lever 60 By depressing the handle 58, the closing lever 60 is brought to engage behind the counter-holder 62, wherein the closing lever 60 initially pivots and then moves transversely to its pivotal movement, because in the last phase of motion, the eccentric 59 pulls the locking lever 60 along the longitudinal axis of the lever 60, so that the door 41 as a result of the reaction force against the plate 14 and against there mounted seals 67th is pulled.
  • the shape of the metering furnace according to the second embodiment ( Fig. 7 to 13 ) largely corresponds to the first embodiment according to Fig. 1 and 2 , However, the plane of the door opening plate 14 is less steep at about 45 ° to the horizontal than in the first embodiment, and the side plates 11 and 12 are accordingly slightly elongated. Another difference is the absence of the filling opening in the upper shell 2.
  • the filling opening 6 is now mounted in the door 41, as will be explained.
  • a filling device 8 is shown, which in the first embodiment Fig. 1 to 6 is missing. Otherwise, the description of the jacket of the metering furnace of the first embodiment applies.
  • Fig. 7 is still the interior of the metering furnace with the refractory lining 31, 32 and the trough 30 indicated. Also indicated is a riser 35, which is guided via the opening 3 into the trough 30 and serves to discharge the material (liquid metal) during operation, and also a filling tube 82 of the filling device 8.
  • the filling device 8 is integrated in the door mechanism 4.
  • the door 41 forms a cuboid body (S. Fig. 10 ), through which the filling opening 6 passes.
  • the filling device 8 has a filling funnel 81, the lower end of which dips into the trough 30 as a filling tube 82.
  • the axes 81a, 82a of the filling funnel 81 and the filling tube 82 buckle against each other (also several axis creases are possible), ie they form an obtuse angle of about 135 ° to each other. This angle may be larger or smaller, depending on how the plate 14 is arranged in space.
  • the axis 81a of the funnel 81 should be vertical and the axis 82a of the filling tube 82 should be approximately perpendicular to the plane of the door opening 40.
  • a flange 83 (FIG. Fig. 10 and 12 ), so that the hopper 81 and the stuffing tube 82 move together with the door 81.
  • Fig. 8 the principle of the door mechanism 4 is shown.
  • the drive of the door 41 between the closed position 41 'and the closed position 41 is similar to Fig. 5 and 6
  • the door leaf is not pivoted parallel to itself, but rotated at the same time.
  • the appropriate trajectory is generated by the first pair of pivot lever 44 is selected with a length L1 shorter than the second pivot lever pair 47 with a length L2, and that the distance a of the first, door-side ends of the pivot lever pairs is greater than the distance b of the second, housing-side pivot lever ends.
  • These second ends of the pivot levers 44, 47 are mounted in housing-fixed bearing blocks 43 (s. Fig. 10 ).
  • the pivot lever 44 are rotatably connected to each other via a shaft 42 and can be driven together when the door 41 is to be opened or closed.
  • the drive of the shaft 42 can be done in a similar manner motor, as with Fig. 5 described.
  • the (not shown) motor drive for example, a double-acting pneumatic cylinder 51 with piston rod 52, can attack via an arm on the shaft 42, but it is also possible to attach to one of the pivot lever a neck on which engages the motor drive.
  • the door 41 can be locked with a locking lever 60 which cooperates with a housing-fixed counter-holder 62.
  • a locking lever 60 which cooperates with a housing-fixed counter-holder 62.
  • a lid 84 is pivotally mounted to grant access to the interior 80 of the hopper 81 and to complete the interior pressure-tight.
  • a filter disk 85 made of ceramic to filter out impurities of the liquid metal.
  • the filter disk 85 can in the position of Fig. 8 of the funnel 81 are easily removed and replaced with the lid 84 open.
  • the cover 84 has two bearing blocks 86 for supporting a shaft 96, and the hopper comprises on its outer side counter-pins 87 and support arms 88th
  • Opening and closing of the lid 84 via a lid closing mechanism 90 This includes a double-acting pneumatic cylinder 91 and a piston rod 92, at the end hinged on the one hand a Deckelschwenkhebel 93 and on the other hand, a Sch Stammbetutzristsstange 94 are.
  • the Sch Stammbet2011 Trentixsstange 94 is connected via a short operating lever 95 with the shaft 96 which is rotatably mounted in the bearing blocks 86 of the lid 84 and is provided at their ends with eccentric 97, on each of which are provided with hook closing lever 98, with the counter-holders 87 at the outer edge of the hopper 84 work together. How best Fig. 11 can be seen, the parts 86, 87, 88, 93, 94, 95, 97 and 98 for reasons of symmetry duplicated.
  • the door 41 is kept closed while the hopper 81 is opened to introduce liquid metal into the hopper.
  • the hopper filling opening 80 of the metering furnace can take a low height compared to the ground floor, due to the design of the metering furnace after the Fig. 7 to 10 .
  • the liquid metal flows through the filter disk 85 and passes through the filling tube 82 into the trough 30.
  • the hopper 81 is hermetically closed, and it is a pressure surge of about 0.2 to 0.5 bar fed to the interior of the metering furnace, resulting in in that liquid metal rises from the trough in the riser 35 and is delivered in metered portion to a casting mold.
  • the interior of the dosing furnace is cleaned of slag residues and adhering metal, and for this purpose the door 41 is pivoted away, as in Fig. 8 shown.
  • the door opening 40 both for filling the metering furnace during operation as well as for cleaning the interior of the metering after Standstill can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Polarising Elements (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Vending Machines For Individual Products (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Peptides Or Proteins (AREA)
  • Refrigerator Housings (AREA)
  • Special Wing (AREA)
  • Drying Of Solid Materials (AREA)
EP07020760.0A 2004-02-28 2005-02-28 Dosierofen mit kombinierter Reinigungs- und Befüllöffnung sowie Verfahren zum dessen Betrieb Active EP1950517B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004003098U DE202004003098U1 (de) 2004-02-28 2004-02-28 Dosierofen
EP05004278A EP1607705B1 (de) 2004-02-28 2005-02-28 Dosierofen

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP05004278A Division EP1607705B1 (de) 2004-02-28 2005-02-28 Dosierofen
EP05004278.7 Division 2005-02-28

Publications (2)

Publication Number Publication Date
EP1950517A1 EP1950517A1 (de) 2008-07-30
EP1950517B1 true EP1950517B1 (de) 2013-12-25

Family

ID=34802054

Family Applications (2)

Application Number Title Priority Date Filing Date
EP05004278A Active EP1607705B1 (de) 2004-02-28 2005-02-28 Dosierofen
EP07020760.0A Active EP1950517B1 (de) 2004-02-28 2005-02-28 Dosierofen mit kombinierter Reinigungs- und Befüllöffnung sowie Verfahren zum dessen Betrieb

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP05004278A Active EP1607705B1 (de) 2004-02-28 2005-02-28 Dosierofen

Country Status (8)

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EP (2) EP1607705B1 (pt)
AT (1) ATE416353T1 (pt)
DE (2) DE202004003098U1 (pt)
DK (1) DK1607705T3 (pt)
ES (2) ES2447433T3 (pt)
PL (1) PL1607705T3 (pt)
PT (1) PT1607705E (pt)
SI (1) SI1607705T1 (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010018895A1 (de) * 2010-04-30 2011-11-03 Thermat Industrieofen Gmbh Ausgussrinne zur Entleerung und zur Reinigung von druckgasbetätigten Dosieröfen für NE-Metalle
DE102011014249A1 (de) 2011-03-17 2012-09-20 Feuerungsbau Bachmeier GmbH & Co. KG Industrieofen, insbesondere Dosier- oder Warmhalteofen für eine Materialschmelze
CN106225493B (zh) * 2016-07-26 2018-07-06 河南天利热工装备股份有限公司 一种热处理台车上的结构

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE578927C (de) * 1931-10-25 1933-06-23 Friedrich Schinke Kippbarer Kupolofenvorherd
DE638866C (de) * 1933-06-03 1937-01-20 Friedrich Schinke Kippbarer Kupolofenvorherd
GB623314A (en) * 1947-04-29 1949-05-16 United Steel Companies Ltd Improvements in and relating to furnace roofs or arches
JPH05293634A (ja) * 1992-04-23 1993-11-09 S A Koosan Kk 鋳造用等の溶湯運搬炉
EP0627274A1 (de) * 1993-06-01 1994-12-07 INDUSTRIETECHNIK ALSDORF GmbH Dosiervorrichtung für Nichteisen-Metallschmelzen und Verfahren zur Steuerung der Abgabe eines Schmelzevolumens
NO308920B1 (no) * 1999-03-31 2000-11-13 Norsk Hydro As FremgangsmÕte og anordning for overføring av metall

Also Published As

Publication number Publication date
ES2447433T3 (es) 2014-03-12
ATE416353T1 (de) 2008-12-15
PL1607705T3 (pl) 2009-05-29
SI1607705T1 (sl) 2009-04-30
ES2318374T3 (es) 2009-05-01
DE502005006118D1 (de) 2009-01-15
EP1607705A2 (de) 2005-12-21
PT1607705E (pt) 2009-01-20
EP1950517A1 (de) 2008-07-30
EP1607705A3 (de) 2006-05-24
DE202004003098U1 (de) 2005-07-14
DK1607705T3 (da) 2009-03-30
EP1607705B1 (de) 2008-12-03

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