EP1001039A1 - Rotating chute for distributing loose material with adjustable angle - Google Patents

Rotating chute for distributing loose material with adjustable angle Download PDF

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Publication number
EP1001039A1
EP1001039A1 EP99115274A EP99115274A EP1001039A1 EP 1001039 A1 EP1001039 A1 EP 1001039A1 EP 99115274 A EP99115274 A EP 99115274A EP 99115274 A EP99115274 A EP 99115274A EP 1001039 A1 EP1001039 A1 EP 1001039A1
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EP
European Patent Office
Prior art keywords
rotor
chute
suspension
axis
pivoting
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Granted
Application number
EP99115274A
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German (de)
French (fr)
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EP1001039B1 (en
Inventor
Emile M. Lonardi
Giovanni M. Cimenti
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Paul Wurth SA
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Paul Wurth SA
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Publication of EP1001039A1 publication Critical patent/EP1001039A1/en
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    • 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 present invention relates to a device for distributing materials in bulk with rotating chute with variable angle of inclination. It concerns more particularly a device for distributing bulk materials comprising a chute, a first rotor with a substantially vertical axis of rotation, to which the chute is suspended so that it can pivot about a pivot axis substantially horizontal, and a second rotor, with axis of rotation substantially coaxial with said first rotor.
  • Such devices for distributing bulk materials are for example used in loading devices for shaft ovens, especially tall stoves.
  • the rotating and pivoting chute ensures the distribution of the load on a loading surface inside the shaft furnace.
  • the first rotor essentially imposes a rotation at the chute around a vertical axis.
  • the second rotor interacts with the chute to determine its angle of inclination by compared to the vertical.
  • the second rotor is connected to the chute by a pivoting mechanism transforming a variation of the offset angular between the two rotors in a variation of the angle of inclination of the chute in its vertical pivot plane.
  • Patent US-A-3,766,868 proposes a device of the kind described in the preamble in which a rod located in the pivot plane of the chute is hinged at one end to the rear surface of the chute. The other end of this rod is guided in a guide path sinusoidal of the second rotor.
  • the patent US-A-3,814,403 proposes a device of the kind described in the preamble in which the second rotor comprises a toothed ring. This last drive, via a first pinion, a worm which acts, via a second pinion, on a fixed toothed sector laterally on a trunnion suspension pin.
  • Document US-A-4,368,813 proposes a device of the kind described in the preamble in which the rotor also includes a toothed ring.
  • the first rotor carries a worm drive.
  • the input shaft of this one is provided a pinion which meshes with the ring gear of said second rotor.
  • the output shaft is parallel to the swivel axis of the chute and is equipped a crank.
  • a connecting rod, contained in the pivoting plane of the chute, is articulated at one end on the rear surface of the chute and at the other end on the crank.
  • Document US-A-4,941,792 proposes two versions of a device of the kind of the one described in the preamble.
  • a pivoting lever supported by the first rotor, so that it can pivot in the swivel plane of the chute.
  • This pivot lever is connected via a rod with spherical joints to the second rotor.
  • the chute includes two lateral suspension pins which are provided each of a crank. Forked rod connects the pivot rod to the two cranks of the chute.
  • the second rotor supports a toothed annular segment which cooperates with a toothed sector secured to a side suspension journal of the chute.
  • the object of the present invention is to provide a simple and inexpensive device cumbersome allowing significant pivoting moments to be transmitted to the rotary chute. According to the invention, this objective is achieved by a device according to claim 1.
  • a device for distributing bulk materials comprises a first rotor and a second rotor, having a common axis of rotation substantially vertical.
  • Said first rotor carries two suspension bearings, in which a distribution chute is suspended so that it can pivot about a substantially horizontal pivot axis.
  • the device further includes a gear transmission, which is also carried by said first rotor.
  • This transmission includes a shaft input and output shaft.
  • the input shaft has a pinion which meshes with a ring gear of said second rotor.
  • the output shaft of the transmission is parallel to the pivot axis of the chute.
  • the output shaft comprises two cranks, while the chute is provided with a pivoting lever at each of its two suspension bearings.
  • Each of these two pivot levers is then connected to one of the two cranks of the gear transmission via a connecting rod.
  • a difference in the angular speed of rotation of the first rotor and of the second rotor produces a rotation of the pinion input of the gear transmission around its axis, and therefore also a rotation of the two cranks carried by the output shaft of the transmission.
  • These two cranks then transmit, via the two aforementioned connecting rods and levers, the pivoting moment so symmetrical to the chute. This allows important moments of pivoting at the rotary chute with a simple and space-saving device.
  • Such a distribution device will usually comprise a supply sleeve fixed vertical, arranged so as to discharge the bulk material onto the chute.
  • Said first rotor then advantageously comprises a sleeve of vertical suspension which surrounds and is fitted to the fixed supply sleeve lower end of a horizontal collar. The latter carries the bearings of chute suspension and gear transmission on its surface superior.
  • the gear transmission is advantageously symmetrical with respect to to a plane of symmetry of the two suspension bearings. It includes a worm gear, or equivalent gear system having a shaft input and an output shaft perpendicular to each other.
  • the worm gear endless has the particular advantage of being easily sized for be self-locking, so that the moment due to the weight of the chute should not not be picked up by the second rotor.
  • the device according to the invention When the device according to the invention is installed on an oven, it will include advantageously a carcass fitted at its lower end with a screen fixed. This screen is then provided with a circular opening, in which is adjusted a collar of said first rotor. A gas injection pipe is arranged on along said circular opening, so as to be able to inject a gas of cooling in a hollow space of the collar.
  • a cooling system of the device may further comprise a cooling circuit arranged in an annular space between said first rotor and the feed sleeve vertical fixed, used to pour the bulk material on the chute.
  • the bulk distribution device 10 shown in the Figures is more especially intended to be part of a supply device of a shaft furnace, such as for example a blast furnace, shown diagrammatically by its upper end 12.
  • the device 10 comprises an outer carcass 14, which is mounted sealingly on the upper end 12 of the shaft furnace.
  • This carcass 14 is provided with a fixed supply sleeve 16, which is substantially coaxial with the vertical axis 18 of the shaft furnace.
  • a first rotor 20 includes a vertical suspension sleeve 24, which surrounds the fixed supply sleeve 16 and is provided at its end lower, a horizontal collar 26.
  • a second bearing ring of large diameter 28 is used to suspend a second rotor 30 in the carcass 14.
  • This second rotor 30 surrounds the first rotor 20, and its axis of rotation is coaxial with the axis of rotation of the first rotor 20.
  • the two rotors 20 and 30 are rotated about their axis of common rotation by a drive device which is identified in Figure 1 overall by the reference 32. It includes a first pinion 34, which meshes with a ring gear 36 of the first rotor 20, and a second pinion 38, which meshes with a ring gear 40 of the second rotor 30.
  • a drive device which is identified in Figure 1 overall by the reference 32. It includes a first pinion 34, which meshes with a ring gear 36 of the first rotor 20, and a second pinion 38, which meshes with a ring gear 40 of the second rotor 30.
  • a using two motors 41 and a differential mechanism 43, which are installed outside the carcass 14, this drive device 32 is capable of driving the two rotors 20, 30, either with perfectly rotational speeds synchronized, either with different rotational speeds.
  • Reference 42 identifies a distribution chute for the materials in bulk spilled through the feed sleeve 16.
  • This chute 42 is suspended from the first rotor 20 by means of two suspension bearings 44, 46, so that it can pivot about a pivot axis substantially horizontal.
  • the suspension bearings 44, 46 are arranged on the collar 26 of the first rotor 20 on either side of its suspension sleeve 24.
  • the chute 42 is fitted with a pivot lever 48, 50, projecting upwards through compared to suspension bearings 44, 46.
  • Reference 52 globally identifies a gear transmission carried by the collar 26 of the first rotor 20.
  • This transmission 52 comprises a input shaft 54, which is parallel to the axis of rotation of the two rotors 20, 30 and is provided with a pinion 56 which meshes with a toothed crown 58 of the second rotor 30. It further comprises an output shaft 60, which is parallel to the pivot axis of the chute 42 and has two ends free, each of which is equipped with a crank 64, 66.
  • a gear system worm gear 62 interconnects the input shaft 54 and the output shaft 60, so as to transform a rotation of the vertical input shaft 54 into a rotation of the output shaft 60 horizontal.
  • Two connecting rods 68, 70 connect the two cranks 64, 66 symmetrically to the pivot levers 48, 50 of the chute 42. It follows that a rotation of the input pinion 56 of the transmission by gear 52 produces a rotation of the cranks 64, 66, which is transformed by the connecting rods 68, 70 and the pivot levers 48, 50 into one pivoting of the chute 42. However, a rotation of the input pinion 56 takes place if there has a difference in angular speed between the first rotor 20 and the second rotor 30. To rotate the chute 42 from a first tilt position in a second tilt position, it therefore suffices to train the second rotor 30 at a different angular speed from the first rotor 20.
  • the collar 26 of the first rotor 20 is arranged with a small functional clearance in a circular opening of a lower screen 72 of the carcass 14.
  • This lower screen 72 is provided with insulation 74 and a closed cooling circuit 76.
  • the collar 26 itself is provided on the side lower of an insulation 80 which is separated from the upper metallic collar 26 by a hollow space 82 laterally open.
  • This hollow space 82 is cooled by injection of a gas via a circular pipe 84, which is arranged along the edge of the circular opening in the lower screen 72.
  • the first rotor 20 is advantageously cooled by a cooling circuit 86 arranged in the annular space remaining between the sleeve 24 of the first rotor 20 and the fixed supply sleeve 16.
  • the annular space in which the second rotor 30 is arranged and the gear transmission 52 is advantageously cooled by injection of a gas.

Abstract

First (20) of two rotors (20, 30) has two bearing blocks in which distribution chute (42) is suspended, pivotable around a horizontal axis. Gear transmission (52) on first rotor comprises input and output shafts. Each of two pivoting levers at the level of the two bearing blocks is symmetrically connected to one of two transmission cranks by gear transmission through a link. The unit comprises: (a) a chute (42); (b) a first rotor (20) with a vertical axis of rotation carrying two suspension blocks, the chute being suspended in the two suspension blocks such that it can pivot around a pivoting axis that is more or less horizontal; (c) a second rotor (30) with axis of rotation coaxial with that of the first rotor (20), the second rotor (30) being equipped with an annular gear (58); and (d) a gear transmission (52) carried by the first rotor (20) and comprising an input shaft (54) equipped with a pinion (56) which engages with the annular gear (58) of the second rotor (30), and an output shaft which is parallel to the pivoting axis of the chute (42) and with which is associated a rod-crank system producing pivoting of the chute (42) when the input shaft (54) is driven by the annular gear (58) of the second rotor.

Description

La présente invention concerne un dispositif de répartition de matières en vrac avec goulotte tournante à angle d'inclinaison variable. Elle concerne plus particulièrement un dispositif de répartition de matières en vrac comprenant une goulotte, un premier rotor à axe de rotation sensiblement vertical, auquel la goulotte est suspendue de façon à pouvoir pivoter autour d'un axe de pivotement sensiblement horizontal, et un deuxième rotor, à axe de rotation sensiblement coaxial audit premier rotor.The present invention relates to a device for distributing materials in bulk with rotating chute with variable angle of inclination. It concerns more particularly a device for distributing bulk materials comprising a chute, a first rotor with a substantially vertical axis of rotation, to which the chute is suspended so that it can pivot about a pivot axis substantially horizontal, and a second rotor, with axis of rotation substantially coaxial with said first rotor.

De tels dispositifs de répartition de matières en vrac sont par exemple utilisés dans des dispositifs de chargement de fours à cuve, notamment de hauts fourneaux. La goulotte rotative et pivotante assure la distribution de la charge sur une surface de chargement à l'intérieur du four à cuve.Such devices for distributing bulk materials are for example used in loading devices for shaft ovens, especially tall stoves. The rotating and pivoting chute ensures the distribution of the load on a loading surface inside the shaft furnace.

Dans le dispositif décrit dans le préambule, le premier rotor impose essentiellement une rotation à la goulotte autour d'un axe vertical. Le deuxième rotor interagit avec la goulotte de façon à déterminer son angle d'inclinaison par rapport à la verticale. A cette fin le deuxième rotor est connecté à la goulotte par un mécanisme de pivotement transformant une variation du décalage angulaire entre les deux rotors en une variation de l'angle d'inclinaison de la goulotte dans son plan de pivotement vertical.In the device described in the preamble, the first rotor essentially imposes a rotation at the chute around a vertical axis. The second rotor interacts with the chute to determine its angle of inclination by compared to the vertical. To this end the second rotor is connected to the chute by a pivoting mechanism transforming a variation of the offset angular between the two rotors in a variation of the angle of inclination of the chute in its vertical pivot plane.

Différentes variantes d'exécution ont été proposées pour ce mécanisme de pivotement, qui génère le moment nécessaire pour pivoter la goulotte autour de son axe de pivotement horizontal et qui transmet ce moment à la goulotte.Different execution variants have been proposed for this mechanism swivel, which generates the moment necessary to swivel the chute around of its horizontal pivot axis and which transmits this moment to the chute.

Le brevet US-A-3,766,868 propose un dispositif du genre décrit dans le préambule dans lequel une tringle située dans le plan de pivotement de la goulotte est articulée à une extrémité sur la surface arrière de la goulotte. L'autre extrémité de cette tringle est guidée dans un chemin de guidage sinusoïdal du deuxième rotor.Patent US-A-3,766,868 proposes a device of the kind described in the preamble in which a rod located in the pivot plane of the chute is hinged at one end to the rear surface of the chute. The other end of this rod is guided in a guide path sinusoidal of the second rotor.

Le brevet US-A-3,814,403 propose un dispositif du genre décrit dans le préambule dans lequel le deuxième rotor comprend un anneau denté. Ce dernier entraíne, par l'intermédiaire d'un premier pignon, une vis sans fin qui agit, par l'intermédiaire d'un deuxième pignon, sur un secteur denté fixé latéralement sur un tourillon de suspension de la goulotte.The patent US-A-3,814,403 proposes a device of the kind described in the preamble in which the second rotor comprises a toothed ring. This last drive, via a first pinion, a worm which acts, via a second pinion, on a fixed toothed sector laterally on a trunnion suspension pin.

Le document US-A-4,368,813 propose un dispositif du genre décrit dans le préambule dans lequel le rotor comprend aussi un anneau denté. Le premier rotor porte une transmission à vis sans fin. L'arbre d'entrée de celle-ci est muni d'un pignon qui s'engrène avec la couronne dentée dudit deuxième rotor. L'arbre de sortie est parallèle à l'axe de pivotement de la goulotte et est équipé d'une manivelle. Une bielle, contenue dans le plan de pivotement de la goulotte, est articulée à une extrémité sur la surface arrière de la goulotte et à l'autre extrémité sur la manivelle.Document US-A-4,368,813 proposes a device of the kind described in the preamble in which the rotor also includes a toothed ring. The first rotor carries a worm drive. The input shaft of this one is provided a pinion which meshes with the ring gear of said second rotor. The output shaft is parallel to the swivel axis of the chute and is equipped a crank. A connecting rod, contained in the pivoting plane of the chute, is articulated at one end on the rear surface of the chute and at the other end on the crank.

Le document US-A-4,941,792 propose deux exécutions d'un dispositif du genre de celui décrit dans le préambule. Dans une première exécution on utilise un levier de pivotement supporté par le premier rotor, de façon à pouvoir pivoter dans le plan de pivotement de la goulotte. Ce levier de pivotement est connecté par l'intermédiaire d'une tringle à articulations sphériques au deuxième rotor. La goulotte comprend deux tourillons de suspension latéraux qui sont munis chacun d'une manivelle. Une tringle fourchue connecte la tringle de pivotement aux deux manivelles de la goulotte. Dans une deuxième exécution le deuxième rotor supporte un segment annulaire denté qui coopère avec un secteur denté solidaire d'un tourillon de suspension latéral de la goulotte.Document US-A-4,941,792 proposes two versions of a device of the kind of the one described in the preamble. In a first execution we use a pivoting lever supported by the first rotor, so that it can pivot in the swivel plane of the chute. This pivot lever is connected via a rod with spherical joints to the second rotor. The chute includes two lateral suspension pins which are provided each of a crank. Forked rod connects the pivot rod to the two cranks of the chute. In a second execution the second rotor supports a toothed annular segment which cooperates with a toothed sector secured to a side suspension journal of the chute.

Le document US-A-5,002,806 propose un dispositif du genre décrit dans le préambule dans lequel le deuxième rotor est connecté à une manivelle solidaire d'un tourillon de suspension latéral de la goulotte à l'aide d'une tringle à articulations sphériques.Document US-A-5,002,806 proposes a device of the type described in the preamble in which the second rotor is connected to a crank secured to a side suspension trunnion of the chute using a rod with spherical joints.

L'objet de la présente invention est de proposer un dispositif simple et peu encombrant permettant de transmettre d'importants moments de pivotement à la goulotte rotative. Conformément à l'invention, cet objectif est atteint par un dispositif selon la revendication 1.The object of the present invention is to provide a simple and inexpensive device cumbersome allowing significant pivoting moments to be transmitted to the rotary chute. According to the invention, this objective is achieved by a device according to claim 1.

Un dispositif de répartition de matières en vrac selon l'invention comprend un premier rotor et un deuxième rotor, présentant un axe commun de rotation sensiblement vertical. Ledit premier rotor porte deux paliers de suspension, dans lesquels une goulotte de distribution est suspendue de façon à ce qu'elle puisse pivoter autour d'un axe de pivotement sensiblement horizontal. Le dispositif comprend en outre une transmission par engrenages, qui est également portée par ledit premier rotor. Cette transmission comprend un arbre d'entrée et un arbre de sortie. L'arbre d'entrée est muni d'un pignon qui s'engrène avec une couronne dentée dudit deuxième rotor. L'arbre de sortie de la transmission est parallèle à l'axe de pivotement de la goulotte. Selon un aspect important de la présent invention, l'arbre de sortie comprend deux manivelles, tandis que la goulotte est munie d'un levier de pivotement au niveau de chacun de ses deux paliers de suspension. Chacun de ces deux leviers de pivotement est alors connecté à une des deux manivelles de la transmission par engrenages par l'intermédiaire d'une bielle. Une différence dans la vitesse angulaire de rotation du premier rotor et du deuxième rotor produit une rotation du pignon d'entrée de la transmission par engrenages autour de son axe, et par conséquent aussi une rotation des deux manivelles portées par l'arbre de sortie de la transmission. Ces deux manivelles transmettent alors, par l'intermédiaire des deux bielles et leviers susmentionnés, le moment de pivotement de façon symétrique à la goulotte. Ceci permet de transmettre d'importants moments de pivotement à la goulotte rotative avec un dispositif simple et peu encombrant.A device for distributing bulk materials according to the invention comprises a first rotor and a second rotor, having a common axis of rotation substantially vertical. Said first rotor carries two suspension bearings, in which a distribution chute is suspended so that it can pivot about a substantially horizontal pivot axis. The device further includes a gear transmission, which is also carried by said first rotor. This transmission includes a shaft input and output shaft. The input shaft has a pinion which meshes with a ring gear of said second rotor. The output shaft of the transmission is parallel to the pivot axis of the chute. According to one aspect important of the present invention, the output shaft comprises two cranks, while the chute is provided with a pivoting lever at each of its two suspension bearings. Each of these two pivot levers is then connected to one of the two cranks of the gear transmission via a connecting rod. A difference in the angular speed of rotation of the first rotor and of the second rotor produces a rotation of the pinion input of the gear transmission around its axis, and therefore also a rotation of the two cranks carried by the output shaft of the transmission. These two cranks then transmit, via the two aforementioned connecting rods and levers, the pivoting moment so symmetrical to the chute. This allows important moments of pivoting at the rotary chute with a simple and space-saving device.

Un tel dispositif de répartition comprendra usuellement un manchon d'alimentation vertical fixe, agencé de façon à déverser la matière en vrac sur la goulotte. Ledit premier rotor comprend alors avantageusement un manchon de suspension vertical qui entoure le manchon d'alimentation fixe et est muni à son extrémité inférieure d'un collet horizontal. Ce dernier porte les paliers de suspension de la goulotte et la transmission par engrenage sur sa surface supérieure.Such a distribution device will usually comprise a supply sleeve fixed vertical, arranged so as to discharge the bulk material onto the chute. Said first rotor then advantageously comprises a sleeve of vertical suspension which surrounds and is fitted to the fixed supply sleeve lower end of a horizontal collar. The latter carries the bearings of chute suspension and gear transmission on its surface superior.

La transmission par engrenage est avantageusement symétrique par rapport à un plan de symétrie des deux paliers de suspension. Elle comprend un engrenage à vis sans fin, ou un système d'engrenage équivalent ayant un arbre d'entrée et un arbre de sortie perpendiculaires entre eux. L'engrenage à vis sans fin a notamment l'avantage de pouvoir être facilement dimensionné pour être autobloquant, de sorte que le moment dû au poids de la goulotte ne doit pas être repris par le deuxième rotor.The gear transmission is advantageously symmetrical with respect to to a plane of symmetry of the two suspension bearings. It includes a worm gear, or equivalent gear system having a shaft input and an output shaft perpendicular to each other. The worm gear endless has the particular advantage of being easily sized for be self-locking, so that the moment due to the weight of the chute should not not be picked up by the second rotor.

Lorsque le dispositif selon l'invention est installé sur un four, il comprendra avantageusement une carcasse équipée à son extrémité inférieure d'un écran fixe. Cet écran est alors muni d'une ouverture circulaire, dans laquelle est ajusté un collet dudit premier rotor. Une conduite d'injection d'un gaz est agencée le long de ladite ouverture circulaire, de façon à pouvoir injecter un gaz de refroidissement dans un espace creux du collet. Un système de refroidissement du dispositif peut en outre comprendre un circuit de refroidissement agencé dans un espace annulaire entre ledit premier rotor et le manchon d'alimentation vertical fixe, servant à déverser la matière en vrac sur la goulotte.When the device according to the invention is installed on an oven, it will include advantageously a carcass fitted at its lower end with a screen fixed. This screen is then provided with a circular opening, in which is adjusted a collar of said first rotor. A gas injection pipe is arranged on along said circular opening, so as to be able to inject a gas of cooling in a hollow space of the collar. A cooling system of the device may further comprise a cooling circuit arranged in an annular space between said first rotor and the feed sleeve vertical fixed, used to pour the bulk material on the chute.

D'autres particularités et caractéristiques de l'invention ressortiront de la description détaillée d'un mode de réalisation avantageux, qui est décrit cidessous à titre d'illustration, en se référant aux dessins annexés. Ceux-ci montrent:

Fig.1:
une section verticale à travers un dispositif de répartition de matières en vrac selon l'invention; et
Fig.2:
une section horizontale selon la ligne de coupe 2-2 repérée sur la Figure 1.
Other features and characteristics of the invention will emerge from the detailed description of an advantageous embodiment, which is described below by way of illustration, with reference to the accompanying drawings. These show:
Fig. 1:
a vertical section through a device for distributing bulk materials according to the invention; and
Fig. 2:
a horizontal section along the section line 2-2 marked in Figure 1.

Le dispositif de répartition de matières en vrac 10 montré sur les Figures est plus spécialement destiné à faire partie d'un dispositif d'alimentation d'un four à cuve, tel que par exemple un haut fourneau, représenté schématiquement par son extrémité supérieure 12.The bulk distribution device 10 shown in the Figures is more especially intended to be part of a supply device of a shaft furnace, such as for example a blast furnace, shown diagrammatically by its upper end 12.

Le dispositif 10 comprend une carcasse extérieure 14, qui est montée de façon étanche sur l'extrémité supérieure 12 du four à cuve. Cette carcasse 14 est munie d'un manchon fixe d'alimentation 16, qui est sensiblement coaxial à l'axe vertical 18 du four à cuve. Dans la carcasse 14 est suspendu un premier rotor 20, par l'intermédiaire d'un premier anneau de roulement de grand diamètre 22. Ce premier rotor 20 comprend un manchon de suspension vertical 24, qui entoure le manchon d'alimentation fixe 16 et est muni, à son extrémité inférieure, d'un collet horizontal 26. Un deuxième anneau de roulement de grand diamètre 28 sert à la suspension d'un deuxième rotor 30 dans la carcasse 14. Ce deuxième rotor 30 entoure le premier rotor 20, et son axe de rotation est coaxial à l'axe de rotation du premier rotor 20.The device 10 comprises an outer carcass 14, which is mounted sealingly on the upper end 12 of the shaft furnace. This carcass 14 is provided with a fixed supply sleeve 16, which is substantially coaxial with the vertical axis 18 of the shaft furnace. In the carcass 14 hangs a first rotor 20, via a first large rolling ring diameter 22. This first rotor 20 includes a vertical suspension sleeve 24, which surrounds the fixed supply sleeve 16 and is provided at its end lower, a horizontal collar 26. A second bearing ring of large diameter 28 is used to suspend a second rotor 30 in the carcass 14. This second rotor 30 surrounds the first rotor 20, and its axis of rotation is coaxial with the axis of rotation of the first rotor 20.

Les deux rotors 20 et 30 sont entraínés en rotation autour de leur axe de rotation commun par un dispositif d'entraínement qui est repéré sur la Figure 1 globalement par la référence 32. Il comprend un premier pignon 34, qui s'engrène avec une couronne dentée 36 du premier rotor 20, et un deuxième pignon 38, qui s'engrène avec une couronne dentée 40 du deuxième rotor 30. A l'aide de deux moteurs 41 et d'un mécanisme différentiel 43, qui sont installés en-dehors de la carcasse 14, ce dispositif d'entraínement 32 est apte à entraíner les deux rotors 20, 30, soit avec des vitesses de rotation parfaitement synchronisées, soit avec des vitesses de rotation différentes.The two rotors 20 and 30 are rotated about their axis of common rotation by a drive device which is identified in Figure 1 overall by the reference 32. It includes a first pinion 34, which meshes with a ring gear 36 of the first rotor 20, and a second pinion 38, which meshes with a ring gear 40 of the second rotor 30. A using two motors 41 and a differential mechanism 43, which are installed outside the carcass 14, this drive device 32 is capable of driving the two rotors 20, 30, either with perfectly rotational speeds synchronized, either with different rotational speeds.

La référence 42 repère une goulotte de distribution pour les matières en vrac déversées à travers le manchon d'alimentation 16. Cette goulotte 42 est suspendue au premier rotor 20 par l'intermédiaire de deux paliers de suspension 44, 46, de façon à ce qu'elle puisse pivoter autour d'un axe de pivotement sensiblement horizontal. Les paliers de suspension 44, 46 sont agencés sur le collet 26 du premier rotor 20 de part et d'autre de son manchon de suspension 24. Au niveau de chacun de ses deux paliers de suspension 44, 46, la goulotte 42 est équipée d'un levier de pivotement 48, 50, faisant saillie vers le haut par rapport aux paliers de suspension 44, 46.Reference 42 identifies a distribution chute for the materials in bulk spilled through the feed sleeve 16. This chute 42 is suspended from the first rotor 20 by means of two suspension bearings 44, 46, so that it can pivot about a pivot axis substantially horizontal. The suspension bearings 44, 46 are arranged on the collar 26 of the first rotor 20 on either side of its suspension sleeve 24. At each of its two suspension bearings 44, 46, the chute 42 is fitted with a pivot lever 48, 50, projecting upwards through compared to suspension bearings 44, 46.

La référence 52 repère de façon globale une transmission par engrenage portée par le collet 26 du premier rotor 20. Cette transmission 52 comprend un arbre d'entrée 54, qui est parallèle à l'axe de rotation des deux rotors 20, 30 et est muni d'un pignon 56 qui s'engrène avec une couronne dentée 58 du deuxième rotor 30. Elle comprend en outre un arbre de sortie 60, qui lui est parallèle à l'axe de pivotement de la goulotte 42 et comprend deux extrémités libres, dont chacune est équipée d'une manivelle 64, 66. Un système d'engrenage à vis sans fin 62 interconnecte l'arbre d'entrée 54 et l'arbre de sortie 60, de façon à transformer une rotation de l'arbre d'entrée 54 vertical en une rotation de l'arbre de sortie 60 horizontal. Deux bielles 68, 70 connectent les deux manivelles 64, 66 de façon symétrique aux leviers de pivotement 48, 50 de la goulotte 42. Il s'ensuit qu'une rotation du pignon d'entrée 56 de la transmission par engrenage 52 produit une rotation des manivelles 64, 66, qui est transformée par les bielles 68, 70 et les leviers de pivotement 48, 50 en un pivotement de la goulotte 42. Or, une rotation du pignon d'entrée 56 a lieu s'il y a une différence de vitesse angulaire entre le premier rotor 20 et le deuxième rotor 30. Pour faire pivoter la goulotte 42 d'une première position d'inclinaison dans une deuxième position d'inclinaison, il suffit par conséquent d'entraíner le deuxième rotor 30 à une vitesse angulaire différente du premier rotor 20. Pour faire tourner la goulotte avec un angle d'inclinaison constant, il suffit d'entraíner le deuxième rotor 30 avec la même vitesse angulaire que le premier rotor 20. Il sera apprécié que le dispositif décrit permet de transmettre avec un équipement relativement simple et un encombrement réduit, des efforts de pivotement appréciables à la goulotte 42.Reference 52 globally identifies a gear transmission carried by the collar 26 of the first rotor 20. This transmission 52 comprises a input shaft 54, which is parallel to the axis of rotation of the two rotors 20, 30 and is provided with a pinion 56 which meshes with a toothed crown 58 of the second rotor 30. It further comprises an output shaft 60, which is parallel to the pivot axis of the chute 42 and has two ends free, each of which is equipped with a crank 64, 66. A gear system worm gear 62 interconnects the input shaft 54 and the output shaft 60, so as to transform a rotation of the vertical input shaft 54 into a rotation of the output shaft 60 horizontal. Two connecting rods 68, 70 connect the two cranks 64, 66 symmetrically to the pivot levers 48, 50 of the chute 42. It follows that a rotation of the input pinion 56 of the transmission by gear 52 produces a rotation of the cranks 64, 66, which is transformed by the connecting rods 68, 70 and the pivot levers 48, 50 into one pivoting of the chute 42. However, a rotation of the input pinion 56 takes place if there has a difference in angular speed between the first rotor 20 and the second rotor 30. To rotate the chute 42 from a first tilt position in a second tilt position, it therefore suffices to train the second rotor 30 at a different angular speed from the first rotor 20. For rotate the chute with a constant tilt angle, just train the second rotor 30 with the same angular speed as the first rotor 20. It it will be appreciated that the device described makes it possible to transmit with equipment relatively simple and compact, pivoting forces appreciable at the chute 42.

Restent à signaler quelques détails intéressants en ce qui concerne la protection du dispositif de répartition 10 contre la chaleur régnant à l'intérieur du four 12. Il sera d'abord noté que le collet 26 du premier rotor 20 est agencé avec un faible jeu fonctionnel dans une ouverture circulaire d'un écran inférieur 72 de la carcasse 14. Cet écran inférieur 72 est muni d'une isolation 74 et d'un circuit de refroidissement fermé 76. Le collet 26 lui-même est muni du côté inférieur d'une isolation 80 qui est séparée du collet métallique supérieur 26 par un espace creux 82 latéralement ouvert. Cet espace creux 82 est refroidi par injection d'un gaz par l'intermédiaire d'une conduite circulaire 84, qui est agencée le long du bord de l'ouverture circulaire dans l'écran inférieur 72. Le premier rotor 20 est avantageusement refroidi par un circuit de refroidissement 86 agencé dans l'espace annulaire subsistant entre le manchon 24 du premier rotor 20 et le manchon d'alimentation fixe 16. L'espace annulaire dans lequel sont agencés le deuxième rotor 30 et la transmission par engrenages 52 est avantageusement refroidi par injection d'un gaz.There are still some interesting details to note. protection of the distribution device 10 against the heat prevailing inside the oven 12. It will first be noted that the collar 26 of the first rotor 20 is arranged with a small functional clearance in a circular opening of a lower screen 72 of the carcass 14. This lower screen 72 is provided with insulation 74 and a closed cooling circuit 76. The collar 26 itself is provided on the side lower of an insulation 80 which is separated from the upper metallic collar 26 by a hollow space 82 laterally open. This hollow space 82 is cooled by injection of a gas via a circular pipe 84, which is arranged along the edge of the circular opening in the lower screen 72. The first rotor 20 is advantageously cooled by a cooling circuit 86 arranged in the annular space remaining between the sleeve 24 of the first rotor 20 and the fixed supply sleeve 16. The annular space in which the second rotor 30 is arranged and the gear transmission 52 is advantageously cooled by injection of a gas.

Claims (6)

Dispositif de répartition de matières en vrac comprenant: une goulotte (42); un premier rotor (20) à axe de rotation sensiblement vertical portant deux paliers de suspension (44, 46), ladite goulotte (42) étant suspendue dans ces deux paliers de suspension (44, 46) de façon à ce qu'elle puisse pivoter autour d'un axe de pivotement sensiblement horizontal; un deuxième rotor (30), à axe de rotation coaxial audit premier rotor (20), ce deuxième rotor (30) étant équipé d'une couronne dentée (58); une transmission par engrenages (52) portée par ledit premier rotor (20), ladite transmission par engrenages (52) comprenant: un arbre d'entrée (54), qui est muni d'un pignon (56) qui s'engrène avec la couronne dentée (58) dudit deuxième rotor (30); un arbre de sortie (60), qui est parallèle à l'axe de pivotement de la goulotte (42) et auquel est associé un système bielle-manivelle produisant un pivotement de la goulotte (42), lorsque ledit arbre d'entré (54) est entraíné par la couronne dentée (58) dudit deuxième rotor (30); caractérisé en ce que ledit arbre de sortie (60) comprend deux manivelles; ladite goulotte (42) est munie d'un levier de pivotement (48, 50) au niveau de chacun de ses deux paliers de suspension (44, 46); et chacun de ces deux leviers de pivotement (48, 50) est symétriquement connecté par l'intermédiaire d'une bielle à une des deux manivelles (64, 66). Bulk material distribution device comprising: a chute (42); a first rotor (20) with a substantially vertical axis of rotation carrying two suspension bearings (44, 46), said chute (42) being suspended in these two suspension bearings (44, 46) so that it can pivot about a substantially horizontal pivot axis; a second rotor (30), with an axis of rotation coaxial with said first rotor (20), this second rotor (30) being equipped with a toothed ring (58); a gear transmission (52) carried by said first rotor (20), said gear transmission (52) comprising: an input shaft (54), which is provided with a pinion (56) which meshes with the ring gear (58) of said second rotor (30); an output shaft (60), which is parallel to the pivot axis of the chute (42) and to which is associated a connecting rod-crank system producing a pivoting of the chute (42), when said input shaft (54 ) is driven by the ring gear (58) of said second rotor (30); characterized in that said output shaft (60) comprises two cranks; said chute (42) is provided with a pivoting lever (48, 50) at each of its two suspension bearings (44, 46); and each of these two pivoting levers (48, 50) is symmetrically connected by means of a connecting rod to one of the two cranks (64, 66). Dispositif selon la revendication 1, caractérisé par: un manchon d'alimentation vertical; ledit premier rotor (20) comprennant un manchon de suspension vertical, qui entoure ledit manchon d'alimentation vertical et est muni, à son extrémité inférieure, d'un collet horizontal; lesdits paliers de suspension (44, 46) de la goulotte (42) étant agencés sur ledit collet de part et d'autre dudit manchon de suspension; ladite transmission par engrenages (52) étant montée sur ledit collet horizontal entre lesdits paliers de suspension (44, 46). Device according to claim 1, characterized by: a vertical feed sleeve; said first rotor (20) comprising a vertical suspension sleeve, which surrounds said vertical supply sleeve and is provided, at its lower end, with a horizontal collar; said suspension bearings (44, 46) of the chute (42) being arranged on said collar on either side of said suspension sleeve; said gear transmission (52) being mounted on said horizontal collar between said suspension bearings (44, 46). Dispositif selon la revendication 1 ou 2, caractérisé en ce que ladite transmission par engrenages (52) est symétrique par rapport à un plan de symétrie des deux paliers de suspension (44, 46).Device according to claim 1 or 2, characterized in that said transmission by gears (52) is symmetrical about a plane of symmetry of the two suspension bearings (44, 46). Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que ladite transmission par engrenages (52) comprend un engrenage à vis sans fin (62).Device according to any one of Claims 1 to 3, characterized in that that said gear transmission (52) includes a worm gear endless (62). Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé par: une carcasse (14) munie à son extrémité inférieure d'un écran fixe (72), ledit écran fixe (72) étant muni d'une ouverture circulaire, et ledit premier rotor (20) étant équipé à son extrémité inférieure d'un collet (26) qui est ajusté avec du jeu dans ladite ouverture circulaire; et une conduite d'injection d'un gaz (84) agencée le long de ladite ouverture circulaire, de façon à pouvoir injecter un gaz de refroidissement dans un espace creux (82) dudit collet. Device according to any one of Claims 1 to 4, characterized by: a carcass (14) provided at its lower end with a fixed screen (72), said fixed screen (72) being provided with a circular opening, and said first rotor (20) being equipped at its lower end with a collar (26) which is adjusted with clearance in said circular opening; and a gas injection pipe (84) arranged along said circular opening, so as to be able to inject cooling gas into a hollow space (82) of said collar. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé par: un manchon d'alimentation fixe (16) entouré par ledit premier rotor (20); et par un circuit de refroidissement (86) agencé dans un espace annulaire entre ledit premier rotor (20) et ledit manchon d'alimentation fixe (16). Device according to any one of Claims 1 to 5, characterized by: a fixed feed sleeve (16) surrounded by said first rotor (20); and by a cooling circuit (86) arranged in an annular space between said first rotor (20) and said fixed supply sleeve (16).
EP99115274A 1998-11-16 1999-07-31 Rotating chute for distributing loose material with adjustable angle Expired - Lifetime EP1001039B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU90319A LU90319B1 (en) 1998-11-16 1998-11-16 Bulk material distribution device with rotating chute - variable tilt angle
LU90319 1998-11-16

Publications (2)

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EP1001039A1 true EP1001039A1 (en) 2000-05-17
EP1001039B1 EP1001039B1 (en) 2006-03-22

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US (1) US6213275B1 (en)
EP (1) EP1001039B1 (en)
CN (1) CN1132943C (en)
AT (1) ATE321150T1 (en)
BR (1) BR9907323A (en)
DE (1) DE69930448T2 (en)
LU (1) LU90319B1 (en)
RU (1) RU2208207C2 (en)
TW (1) TW389818B (en)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
LU90642B1 (en) * 2000-09-20 2002-03-21 Wurth Paul Sa Bulk material distribution device with rotating chute - tilt angle
WO2012016902A1 (en) 2010-08-06 2012-02-09 Paul Wurth S.A. Distribution device for use in a charging installation of a metallurgical reactor
LU91845B1 (en) * 2011-07-22 2013-01-23 Wurth Paul Sa Rotary charging device for shaft furnace
WO2013013972A3 (en) * 2011-07-22 2013-03-28 Paul Wurth S.A. Rotary charging device for shaft furnace

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Publication number Priority date Publication date Assignee Title
LU90295B1 (en) * 1998-10-06 2000-04-07 Wurth Paul Sa Bulk material distribution device
KR100985372B1 (en) * 2003-07-09 2010-10-04 주식회사 포스코 An apparatus for controlling a movement of ore chute in blast furnace
LU91412B1 (en) * 2008-01-30 2009-07-31 Wurth Paul Sa Charging device for distributing bulk material
CN101633438B (en) * 2009-08-18 2011-07-20 中冶赛迪工程技术股份有限公司 Bulk material distributing device
LU91716B1 (en) * 2010-08-06 2012-02-07 Wurth Paul Sa Distribution chute
LU91885B1 (en) * 2011-10-11 2013-04-12 Wurth Paul Sa Blast furnace installation
CN103461196B (en) * 2013-08-22 2014-12-24 四川宁氏牧业设备有限公司 Discharging adjustment device for travelling feeding system
FR3088566B3 (en) * 2018-11-16 2020-11-13 Michelin & Cie STRIP CUTTING SYSTEM BY HELICOIDAL KNIVES AND CORRESPONDING CUTTING PROCESS
CN113201616A (en) * 2021-05-27 2021-08-03 中冶赛迪工程技术股份有限公司 Air-cooled blast furnace distributing device
CN115978575B (en) * 2023-03-22 2023-05-23 临沂银笛机械制造有限公司 Industrial kiln fuel air-feeding and blowing combustion device

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FR2692595A1 (en) * 1992-06-22 1993-12-24 Int Equipement Blast furnace feed device ensuring - has rotating chute pivoting in two directions
EP0863215A1 (en) * 1997-03-07 1998-09-09 Sms Schloemann-Siemag Aktiengesellschaft Charging top closure for shaft furnace

Cited By (7)

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Publication number Priority date Publication date Assignee Title
LU90642B1 (en) * 2000-09-20 2002-03-21 Wurth Paul Sa Bulk material distribution device with rotating chute - tilt angle
WO2002024962A1 (en) * 2000-09-20 2002-03-28 Paul Wurth S.A. Variable device for bulk material distribution with rotary chute having variable angle of inclination
US6981831B2 (en) 2000-09-20 2006-01-03 Paul Wurth S.A. Variable device for bulk material distribution with rotary chute having variable angle of inclination
KR100766164B1 (en) * 2000-09-20 2007-10-10 풀 부르스 에스.에이. Variable Device for Bulk Material Distribution with Rotary Chute Having Variable Angle of Inclination
WO2012016902A1 (en) 2010-08-06 2012-02-09 Paul Wurth S.A. Distribution device for use in a charging installation of a metallurgical reactor
LU91845B1 (en) * 2011-07-22 2013-01-23 Wurth Paul Sa Rotary charging device for shaft furnace
WO2013013972A3 (en) * 2011-07-22 2013-03-28 Paul Wurth S.A. Rotary charging device for shaft furnace

Also Published As

Publication number Publication date
DE69930448D1 (en) 2006-05-11
CN1132943C (en) 2003-12-31
RU2208207C2 (en) 2003-07-10
ATE321150T1 (en) 2006-04-15
DE69930448T2 (en) 2006-10-19
BR9907323A (en) 2000-08-15
EP1001039B1 (en) 2006-03-22
US6213275B1 (en) 2001-04-10
TW389818B (en) 2000-05-11
CN1253903A (en) 2000-05-24
LU90319B1 (en) 2000-07-18

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