EP1607705B1 - Dosing furnace - Google Patents
Dosing furnace Download PDFInfo
- Publication number
- EP1607705B1 EP1607705B1 EP05004278A EP05004278A EP1607705B1 EP 1607705 B1 EP1607705 B1 EP 1607705B1 EP 05004278 A EP05004278 A EP 05004278A EP 05004278 A EP05004278 A EP 05004278A EP 1607705 B1 EP1607705 B1 EP 1607705B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- door
- housing
- opening
- dosing furnace
- furnace
- 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.)
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- 239000003566 sealing material Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 12
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 8
- 241000237983 Trochidae Species 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 238000004140 cleaning Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 240000006829 Ficus sundaica Species 0.000 description 2
- 239000012768 molten material Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 210000003953 foreskin Anatomy 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Images
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, fixed housing enclosing a housing interior, a refractory lining of the housing interior, which forms a trough for the molten material, a door, a Door opening in the housing covering, an opening for the passage of a material discharge tube, which dips with its lower end in the melt, and at least one pressure supply opening to introduce gas pressure into the housing interior and each issue a liquefied portion of material through the discharge pipe.
- Such known metering furnaces have a box-like shape and are placed in foundries, un successive filling molds.
- the dosage of each discharged 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.
- the invention is based, to reduce the effort in a metering furnace the task. Furthermore, the sealing of the metering furnace should also be improved. Finally, a low height of the filling opening of the metering furnace should be made possible.
- the housing has curved side surfaces, which run towards a front end and to a rear end.
- the housing of the metering furnace is formed by curved plates with curved edges, resulting in a shell shape that withstands the internal pressures occurring without reinforcing ribs.
- an upper shell and a lower shell of the bent metal sheets are welded together and the two shells are placed on each other and sealed.
- the free edges of the two shells are folded to form a respective tongue and groove engagement.
- This represents an economic kind of connection which can be easily sealed by inserting sealing material between tongue and groove.
- a flange edge is welded to the metal sheet, which has the spring fold, which serves to rest one end of staples whose other ends are supported on the top of Nutfalz.
- the clamps can be pulled by screws and the like pulling means in the direction of the welded flange edge, whereby the inserted between tongue and groove sealing material is compressed and there is a secure seal the interior of the metering furnace.
- the special shell shape of the metering furnace causes the door opening is inclined in the room, whereby this door opening can be used not only for cleaning purposes of the housing interior, but also for attachment of the filling.
- this door opening can be used not only for cleaning purposes of the housing interior, but also for attachment of the filling.
- the otherwise necessary additional filling can be saved in the upper part of the metering furnace. It is also advantageous that the drop height of the melt during filling, compared to dosing on the market, is lowered.
- Fig. 1 and 2 show the metering in perspective views laterally from the back and front.
- the outer housing comprises a lower shell 1 and an upper shell 2.
- an opening 3 for the passage of a material dispensing tube, not shown, is provided, which leads into the interior of the metering into and immersed with its lower end in a trough, which by a refractory Lining of the lower shell 1 is formed.
- 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 ) or sealing release.
- the upper shell 2 has on both sides each have a number of openings 5, which are shown here closed by a lid.
- 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 on 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 on and off 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 with two welded blocks and a parallel to the plate 41st have 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, the closing lever 60 first 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 is pulled as a result of the reaction force against the plate 14 and against there mounted seals 67.
- 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 the plane of the door opening 40 may be arranged.
- 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 of a Deckelschwenkhebel 93 and on the other hand, a Sch noirbetquestioned Trentsstange 94 are hinged.
- the Sch noirbet für Tosstange 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 door 41 is pivoted away, as in Fig. 8 shown.
- the door opening 40 can be used both for filling the metering furnace during operation as well as for cleaning the interior of the metering furnace after operation standstill.
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Abstract
Description
In der Giesereitechnik gibt es kippbare Kupolofennvorherde (
Die Erfindung bezieht sich auf einen Dosierofen zur Abgabe von abgemessenen Portionen einer Schmelze, insbesondere flüssiges Metall, umfassend ein äußeres, feststehendes Gehäuse, das ein Gehäuseinneres umschließt, eine feuerfeste Auskleidung des Gehäuseinneren, die eine Wanne für die Materialschmelze bildet, eine Tür, die eine Türöffnung im Gehäuse abdeckt, eine Öffnung zum Durchtritt eines Materialabgaberohres, das mit seinem unteren Ende in die Schmelze eintaucht, und wenigstens eine Druckzuführungsöffnung, um Gasdruck ins Gehäuseinnere einzuführen und jeweils eine verflüssigte Materialportion durch das Abgaberohr auszugeben.The invention relates to a metering furnace for dispensing metered portions of a melt, in particular liquid metal, comprising an outer, fixed housing enclosing a housing interior, a refractory lining of the housing interior, which forms a trough for the molten material, a door, a Door opening in the housing covering, an opening for the passage of a material discharge tube, which dips with its lower end in the melt, and at least one pressure supply opening to introduce gas pressure into the housing interior and each issue a liquefied portion of material through the discharge pipe.
Derartige bekannte Dosieröfen haben eine kastenförmige Gestalt und werden in Gießereien aufgestellt, un aufeinanderfolgend Gießformen zu füllen. Die Dosierung der jeweils abgegebenen Menge an Schmelze wird durch Höhe und Dauer eines ins Innere des Dosierofens zugeführten Gasdruckstoßes bestimmt, der etwa 0,2 bis 0,5 bar beträgt. Der Druckstoß führt zu einer Verformung des Gehäuses, die dadurch gering gehalten wird, dass die äußeren Wände des Gehäuses durch angeschweißte Rippen und Flansche verstärkt werden.Such known metering furnaces have a box-like shape and are placed in foundries, un successive filling molds. The dosage of each discharged 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.
Der Erfindung liegt die Aufgabe zugrunde, den Aufwand bei einem Dosierofen zu verkleinern. Ferner soll auch die Abdichtung des Dosierofens verbessert werden. Schließlich soll eine niedrige Höhe der Einfüllöffnung des Dosierofens ermöglicht werden.The invention is based, to reduce the effort in a metering furnace the task. Furthermore, the sealing of the metering furnace should also be improved. Finally, a low height of the filling opening of the metering furnace should be made possible.
Die gestellte Aufgabe wird dadurch gelöst, dass das Gehäuse gewölbte Seitenflächen aufweist, die zu einem vorderen Ende hin und zu einem hinteren Ende hin zulaufen.The stated object is achieved in that the housing has curved side surfaces, which run towards a front end and to a rear end.
Im Einzelnen wird das Gehäuse des Dosierofens durch gebogene Platten mit gekrümmten Rändern gebildet, wodurch sich eine Schalenform ergibt, die auch ohne Verstärkungsrippen den auftretenden Innendrücken standhält.Specifically, the housing of the metering furnace is formed by curved plates with curved edges, resulting in a shell shape that withstands the internal pressures occurring without reinforcing ribs.
Zum leichteren Zusammenbau des Dosierofens wird eine Oberschale und eine Unterschale aus den gebogenen Blechtafeln zusammengeschweißt und die beiden Schalen werden aufeinander gesetzt und abgedichtet. Nach einer Weiterbildung der Erfindung sind die freien Ränder der beiden Schalen zur Bildung jeweils eines Nut- und Feder-Eingriffs gefalzt. Dies stellt eine ökonomische Verbindungsart dar, die leicht abgedichtet werden kann, indem Dichtungsmaterial zwischen Nut und Feder eingefügt wird. Zweckmäßigerweise wird an die Blechtafel, welcher den Federfalz aufweist, ein Flanschrand angeschweißt, der zur Auflage des einen Endes von Klammern dient, deren andere Enden sich an der Oberseite der Nutfalz abstützen. Die Klammern können durch Schrauben und dergleichen Zugmittel in Richtung auf den angeschweißten Flanschrand gezogen werden, wodurch das zwischen Nut und Feder eingelegte Dichtungsmaterial zusammengepreßt wird und eine sichere Abdichtung des Inneren des Dosierofens erfolgt.To facilitate assembly of the metering furnace, an upper shell and a lower shell of the bent metal sheets are welded together and the two shells are placed on each other and sealed. According to a development of the invention, the free edges of the two shells are folded to form a respective tongue and groove engagement. This represents an economic Kind of connection, which can be easily sealed by inserting sealing material between tongue and groove. Appropriately, a flange edge is welded to the metal sheet, which has the spring fold, which serves to rest one end of staples whose other ends are supported on the top of Nutfalz. The clamps can be pulled by screws and the like pulling means in the direction of the welded flange edge, whereby the inserted between tongue and groove sealing material is compressed and there is a secure seal the interior of the metering furnace.
Die besondere Schalenform des Dosierofens führt dazu, dass die Türöffnung schräg im Raum liegt, wodurch diese Türöffnung nicht nur zu Reinigungszwecken des Gehäuseinneren, sondern auch zur Anbringung der Befülleinrichtung genutzt werden kann. Somit kann die sonst notwendige weitere Befüllöffnung im oberen Bereich des Dosierofens eingespart werden. Vorteilhaft ist auch, dass die Fallhöhe der Schmelze beim Einfüllen, im Vergleich zu am Markt befindlichen Dosieröfen, erniedrigt wird.The special shell shape of the metering furnace causes the door opening is inclined in the room, whereby this door opening can be used not only for cleaning purposes of the housing interior, but also for attachment of the filling. Thus, the otherwise necessary additional filling can be saved in the upper part of the metering furnace. It is also advantageous that the drop height of the melt during filling, compared to dosing on the market, is lowered.
Ausführungsbeispiele der Erfindung werden anhand der Zeichnung beschrieben. Dabei zeigt:
- Fig. 1
- eine erste Ausführungsform des Dosierofens, seitlich von hinten gesehen,
- Fig. 2
- den Dosierofen seitlich von vorne gesehen,
- Fig. 3
- einen Schnitt durch Eingriffsfalze,
- Fig. 4
- eine Klammerverbindung.
- Fig. 5
- einen Türschließmechanismus,
- Fig. 6
- eine Seitenansicht von Teilen des Türschließmechanismus, teilweise geschnitten,
- Fig. 7
- eine zweite Ausführungsform des Dosierofens in der Betriebsstellung, von der Seite gesehen,
- Fig. 8
- den Türmechanismus in der Reinigungsstellung des Dosierofens,
- Fig. 9
- den Dosierofen, von oben gesehen,
- Fig. 10
- den Dosierofen, von hinten gesehen,
- Fig. 11
- einen Fülltrichter, von oben gesehen,
- Fig. 12
- den Fülltrichter, teilweise geschnitten, in der Geschlossen-Stellung, und
- Fig. 13
- den Fülltrichter in der Offen-Stellung.
- Fig. 1
- a first embodiment of the metering furnace, seen from the side,
- Fig. 2
- seen the dosing furnace laterally from the front,
- Fig. 3
- a section through Eingriffsfalze,
- Fig. 4
- a clamp connection.
- Fig. 5
- a door closing mechanism,
- Fig. 6
- a side view of parts of the door closing mechanism, partially cut,
- Fig. 7
- A second embodiment of the metering furnace in the operating position, seen from the side,
- Fig. 8
- the door mechanism in the cleaning position of the metering furnace,
- Fig. 9
- the dosing oven, seen from above,
- Fig. 10
- the dosing oven, seen from behind,
- Fig. 11
- a hopper, seen from above,
- Fig. 12
- the hopper, partially cut, in the closed position, and
- Fig. 13
- the hopper in the open position.
Die Unterschale 1 umfasst im Wesentlichen fünf zusammengeschweißte Platten, nämlich zwei Seitenplatten 11 und 12, eine Auslassöffnungsplatte 13, eine Türöffnungsplatte 14 und eine Bodenplatte 15. Die Oberschale 2 umfasst Seitenplatten 21, 22 sowie eine Deckplatte 23. Wie aus den zeichnerischen Darstellungen ersichtlich, sind alle Platten mehr oder weniger gekrümmt, bis auf die Türöffnungsplatte 14, die im übrigen auch dickeres Material im Vergleich zu den anderen Platten aufweist, wie aus
Die Unter- und Oberschale weisen freie Kanten auf, die dazu bestimmt sind, abdichtend ineinander zu greifen. Zu diesem Zweck sind die freien Kanten der Unterschale 1 als Federfalz 17 (
Nahe jedes Federfalzes 17 ist ein Flanschrand 18 angeschweißt, der zur Aufnahme eines Schraubbolzens 24 dient. Der Schraubbolzen 24 kann als Stehbolzen (
In
Der Türmechanismus 4 wird anhand der
Das Anheben und Absenken der Tür 41 erfolgt über einen motorischen Antrieb 50. Dieser enthält einen doppelwirkenden Pneumatikzylinder 51 und eine Kolbenstange 52, deren Ende gelenkig mit einem Arm 53 der Welle 42 zu deren Betätigung verbunden ist. Durch Herausfahren und Zurückziehen der Kolbenstange 52 wird der Hebelarm 53 hin- und hergeschwenkt und damit auch das Schwenkhebelpaar 44, was zum An- und Abheben der Tür 41 führt.The raising and lowering of the
Zum festen Verschließen der Tür 41 ist noch eine Handschließeinrichtung 55 vorgesehen. Zu diesem Zweck sind zwei Lagerböcke 56 an den gewölbten Enden der Tür 41 angeschweißt, die eine Schließwelle 57 lagern, an der ein Handgriff 58 angebracht ist. Die Welle 57 ist an ihren Enden als Exzenter 59 ausgebildet, auf denen jeweils ein Exzenterhebel oder Schließhebel 60 sitzt, der mit einem Schließhaken 61 (
Der Öffnungs- und Schließvorgang der Tür geht wie folgt vor sich: Durch Anheben des Handgriffes 58 wird die Welle 57 so geschwenkt, dass der Exzenter 59 den Schließhebel 60 lockert und außer Eingriff mit dem Gegenhalterbolzen 62 bewegt. Wenn nunmehr der Pneumatikzylinder 51 betätigt wird, führt dies zur Drehung der Welle 42 und damit Schwenkung des Hebelpaares 44, wodurch die Tür 41 in die Stellung 41' (
Es ist somit verständlich, dass mit einfachen Mitteln eine stabile Konstruktion und gute Abdichtung des Dosierofens erzielt wird, was Voraussetzung für exaktes Arbeiten bei der dosierten Abgabe der Materialschmelze ist.It is thus understandable that a stable construction and good sealing of the metering furnace is achieved with simple means, which is a prerequisite for accurate work in the metered delivery of the molten material.
Die Form des Dosierofens nach der zweiten Ausführungsform (
In der zweiten Ausführungsform der Erfindung ist die Befülleinrichtung 8 in dem Türmechanismus 4 integriert. Zu diesem Zweck bildet die Tür 41 einen quaderförmigen Körper (s.
In
Der Antrieb der Tür 41 zwischen der Schließstellung 41' und der Geschlossen-Stellung 41 erfolgt ähnlich wie zu
Der Antrieb der Welle 42 kann in ähnlicher Weise motorisch erfolgen, wie mit
Wie mit
Weitere Einzelheiten der Befülleinrichtung 8 werden anhand der
Öffnen und Schließen des Deckels 84 erfolgt über einen Deckelschließmechanismus 90. Dieser enthält einen doppelwirkenden Pneumatikzylinder 91 und eine Kolbenstange 92, an deren Ende einerseits ein Deckelschwenkhebel 93 und andererseits eine Schließbetätigungsstange 94 angelenkt sind. Die Schließbetätigungsstange 94 ist über einen kurzen Betätigungshebel 95 mit der Welle 96 verbunden, die in den Lagerböcken 86 des Deckels 84 drehbar gelagert ist und an ihren Enden mit Exzenter 97 versehen ist, auf denen jeweils mit Haken versehene Schließhebel 98 sitzen, die mit den Gegenhaltern 87 am äußeren Rand des Fülltrichters 84 zusammen arbeiten. Wie am Besten aus
Zum Betrieb des Dosierofens wird die Tür 41 geschlossen gehalten, während der Fülltrichter 81 geöffnet wird, um flüssiges Metall in den Trichter einzugeben. Bemerkenswert ist, dass die Trichterfüllöffnung 80 des Dosierofens dabei eine niedrige Höhe gegenüber dem Flurboden einnehmen kann, bedingt durch die Bauweise des Dosierofens nach den
Wenn der Pegel des eingefüllten flüssigen Metalls unterhalb einer vorgegebenen Höhe absinkt, wird der Vorgang des Befüllens des Dosierofens wiederholt.When the level of the filled liquid metal falls below a predetermined level, the process of filling the metering furnace is repeated.
Nach Betriebsstillstand wird das Innere des Dosierofens von Schlackeresten und anhaftendem Metall gereinigt, und hierzu wird die Tür 41 weggeschwenkt, wie in
Claims (8)
- Dosing furnace for discharging measured portions of a material melt, in particular liquid metal, comprising:an external housing (1, 2) which surrounds a housing interior;a refractory lining (31, 32) of the housing interior which forms a trough (30) for the material melt;a door (41) which covers a door opening (40) in the housing;an opening (3) to allow the passage of a material discharge pipe (35) which is inserted with its lower end into the trough (30);at least one pressure supply opening (5) to introduce gas pressure into the housing interior and to discharge in each case a liquefied material portion through the material discharge pipe (35);wherein the housing (1, 2) comprises curved lateral surfaces (11, 12, 13, 15, 21, 22, 23) which run towards a front end (16) and towards a rear end (14).
- Dosing furnace as claimed in claim 1, characterised in that the housing comprises a top shell (2) and a bottom shell (1), whose curved lateral surfaces are welded together from arcuate sheet metal boards, whose free edges are grooved to form in each case a tongue and groove engagement (17, 27).
- Dosing furnace as claimed in claim 2, characterised in that sealing material (29) is inserted between the groove rebate (27) and the tongue rebate (17).
- Dosing furnace as claimed in claim 2 or 3, characterised in that the respective sheet metal boards having a tongue rebate (17) provided thereon comprise a welded-on flange edge (18) which serves to engage clamps (25) which are supported on the outer side of the groove rebate (27).
- Dosing furnace as claimed in any one of claims 1 to 4, characterised in that the door opening (40) is disposed in a plane, which is inclined with respect to the horizontal, at the rear end (14) of the housing.
- Dosing furnace as claimed in claim 5, characterised in that the door (41) forms a cuboidal body, through which a filling opening (6) passes.
- Dosing furnace as claimed in claim 6, characterised in that the filling opening (6) is allocated a filling device (8).
- Dosing furnace as claimed in any one of claims 5 to 7, characterised in that an opening (3) to allow the passage of the material discharge pipe (35) is provided at the front end (16) of the dosing furnace.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL05004278T PL1607705T3 (en) | 2004-02-28 | 2005-02-28 | Dosing furnace |
SI200530570T SI1607705T1 (en) | 2004-02-28 | 2005-02-28 | Dosing furnace |
EP07020760.0A EP1950517B1 (en) | 2004-02-28 | 2005-02-28 | Metering kiln with combined cleaning and charging aperture and Process of using it |
PCT/EP2005/012004 WO2006092163A2 (en) | 2005-02-28 | 2005-11-09 | Metering oven |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202004003098U | 2004-02-28 | ||
DE202004003098U DE202004003098U1 (en) | 2004-02-28 | 2004-02-28 | dosing |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07020760.0A Division EP1950517B1 (en) | 2004-02-28 | 2005-02-28 | Metering kiln with combined cleaning and charging aperture and Process of using it |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1607705A2 EP1607705A2 (en) | 2005-12-21 |
EP1607705A3 EP1607705A3 (en) | 2006-05-24 |
EP1607705B1 true EP1607705B1 (en) | 2008-12-03 |
Family
ID=34802054
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05004278A Active EP1607705B1 (en) | 2004-02-28 | 2005-02-28 | Dosing furnace |
EP07020760.0A Active EP1950517B1 (en) | 2004-02-28 | 2005-02-28 | Metering kiln with combined cleaning and charging aperture and Process of using it |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07020760.0A Active EP1950517B1 (en) | 2004-02-28 | 2005-02-28 | Metering kiln with combined cleaning and charging aperture and Process of using it |
Country Status (8)
Country | Link |
---|---|
EP (2) | EP1607705B1 (en) |
AT (1) | ATE416353T1 (en) |
DE (2) | DE202004003098U1 (en) |
DK (1) | DK1607705T3 (en) |
ES (2) | ES2447433T3 (en) |
PL (1) | PL1607705T3 (en) |
PT (1) | PT1607705E (en) |
SI (1) | SI1607705T1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010018895A1 (en) * | 2010-04-30 | 2011-11-03 | Thermat Industrieofen Gmbh | Spout useful as support and platform in compressed gas-operated dosing furnaces for emptying and cleaning, comprises compressed gas-operated dosing furnace with non-ferrous metals and a conical U-shaped bent plate |
DE102011014249A1 (en) | 2011-03-17 | 2012-09-20 | Feuerungsbau Bachmeier GmbH & Co. KG | Industrial furnace, preferably dosing- or holding furnace, useful for material melt, preferably for liquid aluminum alloy, comprises housing exhibiting bottom region, wall region, and heating element |
CN106225493B (en) * | 2016-07-26 | 2018-07-06 | 河南天利热工装备股份有限公司 | A kind of structure on heat treatment trolley |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE578927C (en) * | 1931-10-25 | 1933-06-23 | Friedrich Schinke | Tiltable cupola front hearth |
DE638866C (en) * | 1933-06-03 | 1937-01-20 | Friedrich Schinke | Tiltable cupola front hearth |
GB623314A (en) * | 1947-04-29 | 1949-05-16 | United Steel Companies Ltd | Improvements in and relating to furnace roofs or arches |
JPH05293634A (en) * | 1992-04-23 | 1993-11-09 | S A Koosan Kk | Molten metal carrying furnace for casting and the like |
EP0627274A1 (en) * | 1993-06-01 | 1994-12-07 | INDUSTRIETECHNIK ALSDORF GmbH | Metering device for non-ferrous metal melts and method to control the release of a melt volume |
NO308920B1 (en) * | 1999-03-31 | 2000-11-13 | Norsk Hydro As | Method and apparatus for transferring metal |
-
2004
- 2004-02-28 DE DE202004003098U patent/DE202004003098U1/en not_active Expired - Lifetime
-
2005
- 2005-02-28 SI SI200530570T patent/SI1607705T1/en unknown
- 2005-02-28 ES ES07020760.0T patent/ES2447433T3/en active Active
- 2005-02-28 DK DK05004278T patent/DK1607705T3/en active
- 2005-02-28 PT PT05004278T patent/PT1607705E/en unknown
- 2005-02-28 EP EP05004278A patent/EP1607705B1/en active Active
- 2005-02-28 EP EP07020760.0A patent/EP1950517B1/en active Active
- 2005-02-28 DE DE502005006118T patent/DE502005006118D1/en active Active
- 2005-02-28 AT AT05004278T patent/ATE416353T1/en active
- 2005-02-28 PL PL05004278T patent/PL1607705T3/en unknown
- 2005-02-28 ES ES05004278T patent/ES2318374T3/en active Active
Also Published As
Publication number | Publication date |
---|---|
DK1607705T3 (en) | 2009-03-30 |
PT1607705E (en) | 2009-01-20 |
DE502005006118D1 (en) | 2009-01-15 |
ATE416353T1 (en) | 2008-12-15 |
SI1607705T1 (en) | 2009-04-30 |
ES2447433T3 (en) | 2014-03-12 |
EP1950517B1 (en) | 2013-12-25 |
DE202004003098U1 (en) | 2005-07-14 |
EP1607705A2 (en) | 2005-12-21 |
PL1607705T3 (en) | 2009-05-29 |
ES2318374T3 (en) | 2009-05-01 |
EP1607705A3 (en) | 2006-05-24 |
EP1950517A1 (en) | 2008-07-30 |
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