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EP1144695A1 - Bell and hopper for shaft furnaces - Google Patents

Bell and hopper for shaft furnaces

Info

Publication number
EP1144695A1
EP1144695A1 EP99959405A EP99959405A EP1144695A1 EP 1144695 A1 EP1144695 A1 EP 1144695A1 EP 99959405 A EP99959405 A EP 99959405A EP 99959405 A EP99959405 A EP 99959405A EP 1144695 A1 EP1144695 A1 EP 1144695A1
Authority
EP
European Patent Office
Prior art keywords
chute
movement
lifting
spindles
closure according
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.)
Granted
Application number
EP99959405A
Other languages
German (de)
French (fr)
Other versions
EP1144695B1 (en
Inventor
Peter Heinrich
Werner Otremba
Hartmut Hille
Marko Ricke
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.)
Paul Wurth SA
Original Assignee
SMS Schloemann Siemag AG
SMS Demag AG
Schloemann Siemag 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
Priority claimed from DE19911637A external-priority patent/DE19911637A1/en
Application filed by SMS Schloemann Siemag AG, SMS Demag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP1144695A1 publication Critical patent/EP1144695A1/en
Application granted granted Critical
Publication of EP1144695B1 publication Critical patent/EP1144695B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/18—Bell-and-hopper arrangements
    • C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden

Definitions

  • the invention relates to a top seal for shaft furnaces, in particular blast furnaces, with a feed hopper with a feed tube, a rotating chute support with a rotary drive and a pivotable chute inside the furnace with external drive means.
  • a generic gout closure is described in German patent application 19709 329.9. This is a bellless top seal, whereby the drives for the rotation and tilting movement of the chute support and the chute work independently of one another and are not connected to the furnace chamber.
  • the chute carrier which is mounted in a ball bearing slewing ring, has a rotary drive that is composed of an electric motor, pinion and ring gear.
  • a hydraulic pressure cylinder rotating with the chute carrier is disclosed as the drive means for the tilting movement.
  • Carrying the tilt drive on the rotating chute carrier of the top seal shows in practical implementation the disadvantage that a complicated, expensive and fault-prone energy transfer to the rotating part is necessary, for example by means of slip rings.
  • a distribution chute or chute is connected to the lower ends of an inner cylinder and outer cylinder, which are rotatable, axially displaceable relative to one another and are mounted independently of one another.
  • the distribution chute can be rotated simultaneously with the inner cylinder and outer cylinder and tilted relative to the outer cylinder with the vertical movement of the inner cylinder.
  • the vertical movement is accomplished with several pressure cylinders.
  • the distribution chute is at the lower end of the inner cylinder pivoted with the help of pivot pins and connected to the lower end of the outer cylinder by means of joint pieces.
  • the distribution chute is pivoted by moving the outer cylinder vertically in relation to the inner cylinder.
  • the drive described is a superimposed rotation and tilting movement of the chute.
  • the invention has for its object to provide a generic, low-wear, low-wear and inexpensive gout closure.
  • the drive means for the pivoting movement of the chute comprise at least one motor, which drives a sprocket via a pinion, the sprocket coming into engagement with the spindle gears of at least two spindles distributed over the circumference of the top seal outside the rotating chute carrier Generation of a lifting and lowering movement of the spindles, as well as means for transmitting this vertical movement of the spindles to the tilting shafts penetrating the inner housing wall, into which the chute can be suspended, for producing a swiveling or tilting movement of the chute.
  • the movement transmission means between the spindles and the chute is a lifting frame and a lifting ring, the lifting frame being carried along in accordance with the vertical movement of the spindle nut and the lifting ring in accordance with the vertical movement of the lifting frame.
  • Joint pieces are fastened to the lifting ring, which convert the lifting and lowering movement of the lifting ring into a corresponding rotary movement of the tilting shafts by eccentric attack on the tilting shafts.
  • the tilting shafts have at their first end means for attaching the chute and at their second end an area extending at right angles to the shaft axis for connection to the joint pieces.
  • three spindles are provided, which ensure a particularly tilt-free drive.
  • the arrangement of the drive means according to the invention and the choice of drives enable complete synchronization of the lifting spindles and thus an absolutely even, uncanted lifting and lowering of the lifting ring and thus a low susceptibility to failure.
  • the drive elements remain dust-free, which has an advantageous effect on their service life.
  • the seals used are no longer able to withstand the full differential pressure between the gas pressure at the furnace head and the atmospheric pressure. set, but only the low preselected differential pressure.
  • the lid solution it is possible to use nitrogen to build up a gas pressure inside the housing that is slightly higher than the pressure inside the furnace. The pressure can be adjusted automatically.
  • the seals as they are known from German patent application 197 09 329.9, can be made less expensive. Any damage to the seals leads to an increase in the otherwise very low nitrogen consumption and would be noticed immediately.
  • Figure 1 is a side view of the top seal
  • Figure 2 is a front view of the top seal.
  • Figure 1 shows a top seal with rotatable and tiltable chute 1 for charging a blast furnace.
  • the Möller is discharged from an infeed bunker into a feed hopper below (shown schematically). From the feed hopper, the Möller reaches a tilting and rotating chute 1 arranged within the chute support and from there into the upper part of the blast furnace via an insertion pipe 2.
  • the chute carrier 3 with chute is set in rotation by a rotary drive consisting of a motor 4, a pinion 5 and a ring gear 6.
  • a further motor 7 is provided for the tilting movement and drives a ring gear 9 via a pinion 8.
  • the drive elements are supported by means of the bearing 10.
  • the ring gear 9 drives the respective spindle gear 11 of three spindles 13 distributed over the circumference of the top seal housing 12. Due to the rotary movement, the spindle nut rises and falls and takes the lifting frame 14 arranged adjacent to it with it. Adjacent the lifting ring 15 is arranged to the lifting frame. The vertical movement of the lifting frame 14 is transmitted to the lifting ring 15, while a bearing 16 arranged laterally below the lifting ring receives the rotary movement of the lifting ring.
  • hinge pieces 17 are detachably fastened and supported with their first end 18 (19).
  • the second end 20 of the joint pieces 17 is releasably attached to a connecting part 21 of the tilting shafts 22.
  • the joint pieces 17 engage the connecting part 21 of the tilting shafts 22 eccentrically, so that the vertical movement of the lifting ring 15 is converted into a corresponding rotary movement of the tilting shafts 22.
  • the tilting shafts 22 are mounted in bearings 23. They penetrate the inner wall 24 of the chute carrier 3 in a gas-tight manner.
  • the inward end 28 of the tilting shafts 22 is designed in such a way that the rotary chute 1 can be suspended. In this case, the chute 1 can be advantageously locked by short-stroke cylinders 25 for safety reasons. With 26 and 27, upper and lower annular seals are designated.
  • the housing 12 and the drive means can be closed with a cover 29 and can be made gas-tight.
  • the internal pressure can be checked by adding nitrogen.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Coating Apparatus (AREA)
  • Screw Conveyors (AREA)

Abstract

In order to configure a bell and hopper for shaft furnaces, in particular, blast furnaces, comprising a charging bin with a feed tube, a rotating chute carrier with rotary drive, a swiveling chute in the interior of the furnace with drive means arranged external to a housing, in a less failure-prone and a wear resistant way, the drive means for the swivel movement of the chute are to comprise: at least one motor (7) which drives by a respective pinion (8) a crown gear (9), wherein the crown gear (9) engages the spindle gear wheels (11) of at least two spindles (13) distributed about the periphery of the bell and hopper external to the rotating chute carrier (3) for generating a lifting and lowering movement of the spindles, as well as means (14, 15, 17, 21) for transmitting this vertical movement of the spindles onto the tilting shafts (22), which penetrate the inner wall (24) of the chute carrier (3) and from which the chute can be suspended, for generating a swivel and tilting movement of the chute.

Description

Gichtverschluß für SchachtöfenTop seal for shaft ovens
Die Erfindung betrifft einen Gichtverschluß für Schachtöfen, insbesondere Hochöfen, mit einem Guteinlauftrichter mit Einschleusrohr, einem rotierenden Schurrenträger mit Drehantrieb sowie einer schwenkbaren Schurre im Ofeninneren mit außerseitigen Antriebsmitteln.The invention relates to a top seal for shaft furnaces, in particular blast furnaces, with a feed hopper with a feed tube, a rotating chute support with a rotary drive and a pivotable chute inside the furnace with external drive means.
Ein gattungsgemäßer Gichtverschluß ist in der deutschen Patentanmeldung 19709 329.9 beschrieben. Bei diesem handelt es sich um einen glockenlosen Gichtverschluß, wobei die Antriebe für die Dreh- sowie Kippbewegung des Schurrenträgers und der Schurre unabhängig voneinander arbeiten und nicht in Verbindung mit dem Ofenraum stehen. Der in einer Kugeldrehverbindung gelagerte Schurrenträger besitzt einen Drehantrieb, der sich aus einem Elektromotor, Ritzel und Zahnkranz zusammensetzt. Als Antriebsmittel für die Kippbewegung ist ein mit dem Schurrenträger mitdrehender hydraulischer Druckzylinder offenbart.A generic gout closure is described in German patent application 19709 329.9. This is a bellless top seal, whereby the drives for the rotation and tilting movement of the chute support and the chute work independently of one another and are not connected to the furnace chamber. The chute carrier, which is mounted in a ball bearing slewing ring, has a rotary drive that is composed of an electric motor, pinion and ring gear. A hydraulic pressure cylinder rotating with the chute carrier is disclosed as the drive means for the tilting movement.
Dieses Mitführen des Kippantriebes auf dem rotierenden Schurrenträger des Gichtverschlusses zeigt in der praktischen Ausführung den Nachteil, daß eine komplizierte, teure und störanfällige Energieübertragung auf das rotierende Teil notwendig ist, beispielsweise mittels Schleifringen.Carrying the tilt drive on the rotating chute carrier of the top seal shows in practical implementation the disadvantage that a complicated, expensive and fault-prone energy transfer to the rotating part is necessary, for example by means of slip rings.
Aus der OS 2404647 ist eine Vorrichtung zum Antrieb bzw. zur Bewegung eines Geräts zum Beschicken eines Hochofens mit Rohstoffen bekannt. Hierbei ist eine Verteilungsschüttrinne oder Schurre mit den unteren Enden eines Innenzylinders und Außenzylinders verbunden, die zugleich drehbar, relativ zueinander axial verschiebbar und unabhängig voneinander gelagert sind. Die Verteilungsschüttrinne ist zugleich mit dem Innenzylinder und Außenzylinder drehbar und mit der Vertikalbewegung des Innenzylinders relativ zum Außenzylinder kippbar. Die Vertikalbewegung wird mit mehreren Druckzylindern bewerkstelligt. Die Verteilungsschüttrinne ist am unteren Ende des Innenzylinders mit Hilfe von Drehbolzen schwenkbar gelagert und mittels Gelenkstücken mit dem unteren Ende des Außenzylinders verbunden. Die Verteilungsschüttrinne wird geschwenkt, indem der Außenzylinder gegenüber dem Innenzylinder vertikal bewegt wird. Bei der beschriebenen Antrieb handelt es sich um eine überlagerte Dreh- und Kippbewegung der Schurre.From OS 2404647 a device for driving or moving a device for loading a blast furnace with raw materials is known. Here, a distribution chute or chute is connected to the lower ends of an inner cylinder and outer cylinder, which are rotatable, axially displaceable relative to one another and are mounted independently of one another. The distribution chute can be rotated simultaneously with the inner cylinder and outer cylinder and tilted relative to the outer cylinder with the vertical movement of the inner cylinder. The vertical movement is accomplished with several pressure cylinders. The distribution chute is at the lower end of the inner cylinder pivoted with the help of pivot pins and connected to the lower end of the outer cylinder by means of joint pieces. The distribution chute is pivoted by moving the outer cylinder vertically in relation to the inner cylinder. The drive described is a superimposed rotation and tilting movement of the chute.
Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, einen wenig störanfälligen, verschleißarmen sowie kostengünstigen Gichtverschluß gattungsgemäßer Art zu schaffen.Based on this prior art, the invention has for its object to provide a generic, low-wear, low-wear and inexpensive gout closure.
Diese Aufgabe wird mittels eines Gichtverschlusses mit den Merkmalen der Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen offenbart.This object is achieved by means of a gout closure with the features of claim 1. Advantageous refinements are disclosed in the subclaims.
Zur Lösung wird vorgeschlagen, daß die Antriebsmittel zur Schwenkbewegung der Schurre mindestens einen Motor umfassen, der über jeweils ein Ritzel einen Zahnkranz antreibt, wobei der Zahnkranz mit den Spindelzahnrädern von mindestens zwei über den Umfang des Gichtverschlusses außerhalb des rotierenden Schurrenträgers verteilten Spindeln in Eingriff kommt zur Erzeugung einer Hub- und Senkbewegung der Spindeln, sowie Mittel zur Übertragung dieser vertikalen Bewegung der Spindeln an die die innere Gehäusewand durchdringende Kippwellen, in die die Schurre einhängbar ist, zur Erzeugung einer Schwenk- bzw. Kippbewegung der Schurre.To solve the problem, it is proposed that the drive means for the pivoting movement of the chute comprise at least one motor, which drives a sprocket via a pinion, the sprocket coming into engagement with the spindle gears of at least two spindles distributed over the circumference of the top seal outside the rotating chute carrier Generation of a lifting and lowering movement of the spindles, as well as means for transmitting this vertical movement of the spindles to the tilting shafts penetrating the inner housing wall, into which the chute can be suspended, for producing a swiveling or tilting movement of the chute.
Auf diese Weise ist es möglich, neben den Vorteilen einer getrennten Anordnung der beiden Antriebe von Dreh- und Kippbewegung der Schurre die Nachteile eines mitrotierenden Antriebs für die Kippbewegung der Schurre zu überwinden. Gegenüber der aus der deutschen Patentanmeldung 19709 329.9 bekannten Lösung rotieren die eigentlichen Antriebsmittel zur Erzeugung der Kippbewegung der Schurre nicht mehr mit. Die Spindeln sind fest auf dem Gichtverschluß angeordnet. Allein Teile der weniger störanfälligen Bewegungs- übertragungsmittel rotieren. Gegenüber der Lösung nach der OS 2404647 wird nach der Erfindung ein präziser Gleichlauf der Hubeinrichtung erzielt, ein Verkanten oder Verklemmen ist nicht mehr möglich.In this way, it is possible to overcome the disadvantages of a co-rotating drive for the tilting movement of the chute in addition to the advantages of a separate arrangement of the two drives of the rotary and tilting movements of the chute. Compared to the solution known from German patent application 19709 329.9, the actual drive means for generating the tilting movement of the chute no longer rotate with it. The spindles are firmly arranged on the top seal. Parts of the less interference-prone movement transmission means alone rotate. Compared to the solution according to OS 2404647, precise synchronization of the lifting device is achieved according to the invention, tilting or jamming is no longer possible.
Bei den Bewegungsübertragungsmitteln zwischen den Spindeln und der Schurre handelt es sich um einen Hubrahmen sowie einen Hubring, wobei der Hubrahmen entsprechend der vertikalen Bewegung der Spindelmutter und der Hubring entsprechend der vertikalen Bewegung des Hubrahmens mitgenommen wird. An dem Hubring sind Gelenkstücke befestigt, die durch exzentrischen Angriff an den Kippwellen die Hub- und Senkbewegung des Hubrings in eine entsprechende Drehbewegung der Kippwellen umwandeln. Hierzu weisen die Kippwellen an ihrem ersten Ende Mittel zum Einhängen der Schurre und an ihrem zweiten Ende einen sich rechtwinklig zur Wellenachse erstreckenden Bereich zur Verbindung mit den Gelenkstücken auf.The movement transmission means between the spindles and the chute is a lifting frame and a lifting ring, the lifting frame being carried along in accordance with the vertical movement of the spindle nut and the lifting ring in accordance with the vertical movement of the lifting frame. Joint pieces are fastened to the lifting ring, which convert the lifting and lowering movement of the lifting ring into a corresponding rotary movement of the tilting shafts by eccentric attack on the tilting shafts. For this purpose, the tilting shafts have at their first end means for attaching the chute and at their second end an area extending at right angles to the shaft axis for connection to the joint pieces.
Bei einer besonders bevorzugten Ausführungsform sind drei Spindein vorgesehen, die einen besonders verkantungsfreien Antrieb gewährleisten. Durch die erfindungsgemäße Anordnung der Antriebsmittel sowie die Wahl der Antriebe wird ein vollständiger Gleichlauf der Hubspindeln und damit ein absolut gleichmäßiges, unverkantetes Heben und Senken des Hubrings und somit eine geringe Störanfälligkeit ermöglicht.In a particularly preferred embodiment, three spindles are provided, which ensure a particularly tilt-free drive. The arrangement of the drive means according to the invention and the choice of drives enable complete synchronization of the lifting spindles and thus an absolutely even, uncanted lifting and lowering of the lifting ring and thus a low susceptibility to failure.
Zur Gewährleistung eines geringen Verschleißes wird vorgeschlagen, die Antriebsmittel für die Dreh- sowie Schwenkbewegung des Schurrenträgers bzw. der Schurre mit einem Deckel abzudichten, der auf das Gehäuse aufgesetzt wird. Der sich ergebene Innenraum wird vorzugsweise mit Stickstoff gefüllt.To ensure low wear, it is proposed to seal the drive means for the rotary and pivoting movement of the chute carrier or chute with a cover which is placed on the housing. The resulting interior is preferably filled with nitrogen.
Auf diese Weise bleiben die Antriebselemente staubfrei, was sich vorteilhaft auf deren Lebensdauer auswirkt. Die Antriebsmittel sind zwar weniger gut zugänglich, die eingesetzten Abdichtungen sind aber nicht mehr dem vollen Differenzdruck zwischen dem Gasdruck am Ofenkopf und dem Atmosphärendruck aus- gesetzt, sondern nur noch dem geringen vorgewählten Differenzdruck. Mittels der Deckellösung ist es möglich, im Inneren des Gehäuses mittels Stickstoff einen Gasdruck aufzubauen, der etwas größer ist als der Druck im Ofeninneren. Der Druck ist automatisch nachsteuerbar. Dann können die Abdichtungen, wie sie aus der deutschen Patentanmeldung 197 09 329.9 bekannt sind, weniger aufwendig ausgeführt werden. Etwaige Schäden an den Dichtungen führen zu einem Anstieg des sonst sehr geringen Stickstoffsverbrauchs und würden sofort bemerkt.In this way, the drive elements remain dust-free, which has an advantageous effect on their service life. Although the drive means are less accessible, the seals used are no longer able to withstand the full differential pressure between the gas pressure at the furnace head and the atmospheric pressure. set, but only the low preselected differential pressure. Using the lid solution, it is possible to use nitrogen to build up a gas pressure inside the housing that is slightly higher than the pressure inside the furnace. The pressure can be adjusted automatically. Then the seals, as they are known from German patent application 197 09 329.9, can be made less expensive. Any damage to the seals leads to an increase in the otherwise very low nitrogen consumption and would be noticed immediately.
Weitere Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung. Hierbei zeigen:Further details of the invention emerge from the following description. Here show:
Figur 1 eine Seitenansicht des Gichtverschlusses;Figure 1 is a side view of the top seal;
Figur 2 eine Vorderansicht des Gichtverschlusses.Figure 2 is a front view of the top seal.
Figur 1 zeigt einen Gichtverschluß mit dreh- und kippbarer Schurre 1 zur Beschickung eines Hochofens. Der Möller wird aus einem Einschleusbunker in einen darunter befindlichen Guteinlauftrichter (schematisch dargestellt) ausgeschleust. Vom Guteinlauftrichter aus gelangt der Möller über ein Einschleusrohr 2 auf eine innerhalb des Schurrenträgers angeordnete kipp- und drehbare Schurre 1 und von dort in den oberen Teil des Hochofens.Figure 1 shows a top seal with rotatable and tiltable chute 1 for charging a blast furnace. The Möller is discharged from an infeed bunker into a feed hopper below (shown schematically). From the feed hopper, the Möller reaches a tilting and rotating chute 1 arranged within the chute support and from there into the upper part of the blast furnace via an insertion pipe 2.
Der Schurrenträger 3 mit Schurre wird durch einen Drehantrieb, bestehend aus einem Motor 4, einem Ritzel 5 sowie einem Zahnkranz 6 in Rotation versetzt.The chute carrier 3 with chute is set in rotation by a rotary drive consisting of a motor 4, a pinion 5 and a ring gear 6.
Zur Kippbewegung ist ein weiterer Motor 7 vorgesehen, der über ein Ritzel 8 einen Zahnkranz 9 antriebt. Die Antriebselemente sind mittels des Lagers 10 gelagert. Der Zahnkranz 9 treibt das jeweilige Spindelzahnrad 11 von drei über den Umfang des Gichtverschlußgehäuses 12 verteilten Spindeln 13 an. Aufgrund der Drehbewegung hebt und senkt sich die Spindelmutter und nimmt dabei den zu dieser benachbart angeordneten Hubrahmen 14 mit. Benachbart zum Hubrahmen ist der Hubring 15 angeordnet. Die vertikale Bewegung des Hubrahmens 14 wird auf den Hubring 15 übertragen, während ein seitlich unterhalb des Hubrings angeordnetes Lager 16 die Drehbewegung des Hubrings aufnimmt. An dem Hubring 15 sind Gelenkstücke 17 mit ihrem ersten Ende 18 lösbar befestigt und gelagert (19). Das zweite Ende 20 der Gelenkstücke 17 ist an einem Verbindungsteil 21 der Kippwellen 22 lösbar befestigt. Der Angriff der Gelenkstücke 17 an dem Verbindungsteil 21 der Kippwellen 22 erfolgt exzentrisch, so daß die vertikale Bewegung des Hubrings 15 in eine entsprechende Drehbewegung der Kippwellen 22 umgewandelt wird. Die Kippwellen 22 sind in Lagerungen 23 gelagert. Sie durchdringen gasdicht die Innenwand 24 des Schurrenträgers 3. Das nach innen zeigende Ende 28 der Kippwellen 22 ist so gestaltet, daß die Drehschurre 1 einhängbar ist. Dabei kann eine aus Sicherheitsgründen vorteilhafte Verriegelung der Schurre 1 durch Kurzhubzylinder 25 erfolgen. Mit 26 und 27 sind obere und untere ringförmige Abdichtungen bezeichnet.A further motor 7 is provided for the tilting movement and drives a ring gear 9 via a pinion 8. The drive elements are supported by means of the bearing 10. The ring gear 9 drives the respective spindle gear 11 of three spindles 13 distributed over the circumference of the top seal housing 12. Due to the rotary movement, the spindle nut rises and falls and takes the lifting frame 14 arranged adjacent to it with it. Adjacent the lifting ring 15 is arranged to the lifting frame. The vertical movement of the lifting frame 14 is transmitted to the lifting ring 15, while a bearing 16 arranged laterally below the lifting ring receives the rotary movement of the lifting ring. On the lifting ring 15, hinge pieces 17 are detachably fastened and supported with their first end 18 (19). The second end 20 of the joint pieces 17 is releasably attached to a connecting part 21 of the tilting shafts 22. The joint pieces 17 engage the connecting part 21 of the tilting shafts 22 eccentrically, so that the vertical movement of the lifting ring 15 is converted into a corresponding rotary movement of the tilting shafts 22. The tilting shafts 22 are mounted in bearings 23. They penetrate the inner wall 24 of the chute carrier 3 in a gas-tight manner. The inward end 28 of the tilting shafts 22 is designed in such a way that the rotary chute 1 can be suspended. In this case, the chute 1 can be advantageously locked by short-stroke cylinders 25 for safety reasons. With 26 and 27, upper and lower annular seals are designated.
Das Gehäuse 12 und die Antriebsmittel sind mit einem Deckel 29 verschließbar und gasdicht ausführbar. Der Innendruck ist durch Einfüllen von Stickstoff kontrollierbar. The housing 12 and the drive means can be closed with a cover 29 and can be made gas-tight. The internal pressure can be checked by adding nitrogen.

Claims

Patentansprüche: Claims:
1. Gichtverschluß für Schachtöfen, insbesondere Hochöfen, mit einem Guteinlauftrichter mit Einschleusrohr, einem rotierenden Schurrenträger mit Drehantrieb, einer schwenkbaren Schurre im Ofeninneren mit außerhalb eines Gehäuses angeordneten Antriebsmitteln, dadurch gekennzeichnet, daß die Antriebsmittel zur Schwenkbewegung der Schurre (1) umfassen:1. Top seal for shaft furnaces, in particular blast furnaces, with a feed hopper with a feed pipe, a rotating chute support with rotary drive, a pivotable chute inside the furnace with drive means arranged outside a housing, characterized in that the drive means for pivoting the chute (1) include:
- mindestens einen Motor (7), der über jeweils ein Ritzel (8) einen Zahnkranz (9) antreibt,- at least one motor (7) which drives a ring gear (9) via a pinion (8),
- wobei der Zahnkranz (9) mit den Spindelzahnrädern (11) von mindestens zwei über den Umfang des Gichtverschlusses außerhalb des rotierenden Schurrenträgers (3) verteilten Spindeln (13) in Eingriff kommt zur Erzeugung einer Hub- und Senkbewegung der Spindeln,- The toothed ring (9) engages with the spindle gears (11) of at least two spindles (13) distributed over the circumference of the top seal outside the rotating chute carrier (3) to generate a lifting and lowering movement of the spindles,
- sowie Mittel (14, 15, 17, 21) zur Übertragung dieser vertikalen Bewegung der Spindeln an die Innenwand (24) des Schurrenträgers (3) durchdringende Kippwellen (22), an die die Schurre einhängbar ist, zur Erzeugung einer Schwenk- bzw. Kippbewegung der Schurre.- As well as means (14, 15, 17, 21) for transmitting this vertical movement of the spindles to the inner wall (24) of the chute carrier (3) penetrating tilting shafts (22), to which the chute can be suspended, for producing a swivel or The chute tilts.
2. Gichtverschluß nach Anspruch 1 , dadurch gekennzeichnet, daß es sich bei den Bewegungsübertragungsmitteln um einen Hubrahmen2. Gout closure according to claim 1, characterized in that it is a lifting frame in the movement transmission means
(14) sowie einen Hubring (15) handelt, wobei der Hubrahmen (14) entsprechend der vertikalen Bewegung der Spindelmutter und der Hubring(14) and a lifting ring (15), the lifting frame (14) corresponding to the vertical movement of the spindle nut and the lifting ring
(15) entsprechend der vertikalen Bewegung des Hubrahmens mitgenommen wird, sowie Gelenkstücke (17), die an dem Hubring (15) befestigt sind, die durch exzentrischen Angriff an den Kippwellen (22) die Hub- und Senkbewegung des Hubrings in eine entsprechende Drehbewegung der Kippwellen umwandeln. (15) is taken along in accordance with the vertical movement of the lifting frame, and joint pieces (17) which are fastened to the lifting ring (15) which, by eccentric attack on the tilting shafts (22), the lifting and lowering movement of the lifting ring into a corresponding rotary movement of the Convert tilt waves.
3. Gichtverschluß nach Anspruch 2, dadurch gekennzeichnet, daß die Kippwellen (22) an ihrem ersten Ende (28) Mittel zum Einhängen der Schurre (1) und an ihrem zweiten Ende einen sich rechtwinklig zur Wellenachse erstreckenden Bereich (21) zur Verbindung mit den Gelenkstücken (17) aufweisen.3. gout closure according to claim 2, characterized in that the tilting shafts (22) at its first end (28) means for hanging the chute (1) and at its second end a region extending at right angles to the shaft axis (21) for connection to the Have joint pieces (17).
4. Gichtverschluß nach Anspruch 3, dadurch gekennzeichnet, daß zur Verriegelung der an die Kippwellen (22) eingehängten Drehschurre (1) Hydraulikzylinder (25) vorgesehen sind.4. Gout closure according to claim 3, characterized in that hydraulic cylinders (25) are provided for locking the rotary chute (1) suspended on the tilting shafts (22).
5. Gichtverschluß nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Antriebsmittel für die Dreh- sowie Schwenkbewegung des Schurrenträgers bzw. der Schurre mit einem Deckel (29) abdichtbar sind und der entstehende Innenraum mit einem Gas beaufschlagbar ist, dessen Druck automatisch stets oberhalb des Drucks im Ofenraum gehalten wird.5. Gout closure according to claim 1 or 2, characterized in that the drive means for the rotary and pivoting movement of the chute carrier or the chute can be sealed with a cover (29) and the resulting interior can be acted upon with a gas, the pressure of which is always automatically above of the pressure in the furnace chamber.
6. Gichtverschluß nach Anspruch 1 ; dadurch gekennzeichnet, daß drei Spindeln (13) vorgesehen sind.6. gout closure according to claim 1; characterized in that three spindles (13) are provided.
7. Gichtverschluß nach Anspruch 2, dadurch gekennzeichnet, daß seitlich unterhalb des Hubrings (15) ein Lager (16) angeordnet ist zur Aufnahme der Drehbewegung des Hubrings.7. Gout closure according to claim 2, characterized in that a bearing (16) is arranged laterally below the cam ring (15) for receiving the rotary movement of the cam ring.
8. Gichtverschluß nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß der Drehantrieb sich aus einem Motor (4), Ritzel (5) und Zahnkranz (6) zusammensetzt. 8. Gout closure according to one of the preceding claims, characterized in that the rotary drive is composed of a motor (4), pinion (5) and ring gear (6).
EP99959405A 1998-12-30 1999-12-11 Bell and hopper for shaft furnaces Expired - Lifetime EP1144695B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19860902 1998-12-30
DE19860902 1998-12-30
DE19911637 1999-03-16
DE19911637A DE19911637A1 (en) 1998-12-30 1999-03-16 Top seal for shaft ovens
PCT/EP1999/009808 WO2000040762A1 (en) 1998-12-30 1999-12-11 Bell and hopper for shaft furnaces

Publications (2)

Publication Number Publication Date
EP1144695A1 true EP1144695A1 (en) 2001-10-17
EP1144695B1 EP1144695B1 (en) 2002-10-16

Family

ID=26051154

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99959405A Expired - Lifetime EP1144695B1 (en) 1998-12-30 1999-12-11 Bell and hopper for shaft furnaces

Country Status (15)

Country Link
US (1) US6540958B1 (en)
EP (1) EP1144695B1 (en)
JP (1) JP4290892B2 (en)
CN (1) CN1208473C (en)
AT (1) ATE226260T1 (en)
AU (1) AU768056B2 (en)
BR (1) BR9916686A (en)
CA (1) CA2358068A1 (en)
CZ (1) CZ299041B6 (en)
ES (1) ES2186424T3 (en)
MX (1) MXPA01006642A (en)
PL (1) PL193490B1 (en)
RU (1) RU2237724C2 (en)
TW (1) TW434319B (en)
WO (1) WO2000040762A1 (en)

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Publication number Priority date Publication date Assignee Title
CN100445061C (en) * 2005-12-15 2008-12-24 南京诚盟塑料机械实业有限公司 Multi-screw feeder
EP1870651A1 (en) * 2006-06-21 2007-12-26 Paul Wurth S.A. Charging device for a shaft furnace
LU91412B1 (en) * 2008-01-30 2009-07-31 Wurth Paul Sa Charging device for distributing bulk material
LU91565B1 (en) * 2009-05-07 2010-11-08 Wurth Paul Sa A shaft furnace charging installation having a drive mechanism for a distribution chute.
LU91716B1 (en) * 2010-08-06 2012-02-07 Wurth Paul Sa Distribution chute
LU91844B1 (en) * 2011-07-22 2013-01-23 Wurth Paul Sa Charging device for shaft furnace
LU91885B1 (en) * 2011-10-11 2013-04-12 Wurth Paul Sa Blast furnace installation
CN102758041A (en) * 2012-07-30 2012-10-31 中冶南方工程技术有限公司 Upper annular sliding contact type tilting distributing device
CN107310868B (en) * 2017-08-07 2022-08-30 中煤科工集团南京设计研究院有限公司 Explosion-proof solar 360-degree rotary fan-shaped cold-proof gate
CN112161478A (en) * 2020-09-11 2021-01-01 河钢承德钒钛新材料有限公司 Device for putting in furnace body ramming material
CN112553394B (en) * 2020-12-08 2024-10-18 中冶赛迪技术研究中心有限公司 Improved blast furnace distributor with nitrogen sealing structure
CN118049849B (en) * 2024-04-16 2024-06-25 泰州瑞沣环保科技有限公司 A high performance rotary kiln tail material sliding device and method

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Also Published As

Publication number Publication date
BR9916686A (en) 2001-09-25
AU1658400A (en) 2000-07-24
MXPA01006642A (en) 2003-06-24
PL193490B1 (en) 2007-02-28
ES2186424T3 (en) 2003-05-01
JP2002534599A (en) 2002-10-15
EP1144695B1 (en) 2002-10-16
CZ299041B6 (en) 2008-04-09
US6540958B1 (en) 2003-04-01
TW434319B (en) 2001-05-16
CN1332806A (en) 2002-01-23
ATE226260T1 (en) 2002-11-15
AU768056B2 (en) 2003-11-27
CA2358068A1 (en) 2000-07-13
JP4290892B2 (en) 2009-07-08
WO2000040762A1 (en) 2000-07-13
PL353641A1 (en) 2003-12-01
CN1208473C (en) 2005-06-29
RU2237724C2 (en) 2004-10-10
CZ20012425A3 (en) 2002-02-13

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