EP1129221A1 - Device for dispensing bulk materials - Google Patents

Device for dispensing bulk materials

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Publication number
EP1129221A1
EP1129221A1 EP99955851A EP99955851A EP1129221A1 EP 1129221 A1 EP1129221 A1 EP 1129221A1 EP 99955851 A EP99955851 A EP 99955851A EP 99955851 A EP99955851 A EP 99955851A EP 1129221 A1 EP1129221 A1 EP 1129221A1
Authority
EP
European Patent Office
Prior art keywords
ring
chute
suspension
axis
rotor
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
EP99955851A
Other languages
German (de)
French (fr)
Other versions
EP1129221B1 (en
Inventor
Emile Lonardi
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
Paul Wurth SA
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
Application filed by Paul Wurth SA filed Critical Paul Wurth SA
Publication of EP1129221A1 publication Critical patent/EP1129221A1/en
Application granted granted Critical
Publication of EP1129221B1 publication Critical patent/EP1129221B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 present invention relates to a device for distributing bulk materials with a rotary chute with variable angle of inclination.
  • Such devices are, for example, used in devices for loading ovens with bowls, in particular blast furnaces, in which a rotary chute with variable angle of inclination ensures the distribution of the charge inside the bowl furnace.
  • They more particularly comprise a support carcass in which is mounted a suspension rotor so as to be able to be driven in rotation about a substantially vertical axis of rotation.
  • the chute is suspended in this rotor so as to be able to pivot around its suspension axis.
  • a pivoting mechanism allows the inclination of the chute to be changed during its rotation.
  • the rotor is axially traversed by a feed channel, so that the bulk materials, which flow from a lock hopper of the loading device, are discharged onto the rotary chute, which distributes them to the inside the shaft oven.
  • the pivoting mechanism comprises a second rotor, which has an axis of rotation substantially coaxial with the first rotor in which the chute is suspended.
  • This second rotor can be rotated at a speed different from that of the first rotor, which makes it possible to produce a variable angular offset between the two rotors.
  • a mechanism, connected between the second rotor and the chute, then makes it possible to transform a variation of the angular offset between the two rotors into a variation of the angle of inclination of the chute in its vertical pivot plane.
  • One of the problems underlying the present invention is to provide a device for distributing bulk materials with a rotary chute with variable angle of inclination, in which a relatively simple chute pivoting mechanism is used, which however presents excellent qualities with regard to the transmission of the significant forces necessary for pivoting the chute.
  • Such a device comprises, in a manner known per se, a suspension rotor mounted in a support carcass so as to be able to rotate around a substantially vertical axis of rotation.
  • the chute is suspended from this rotor so as to be able to pivot around a substantially horizontal suspension axis.
  • the suspension rotor is axially crossed by a feed channel of the chute.
  • the present invention has a very simple pivoting mechanism for changing the inclination of the chute suspended in the rotor.
  • This mechanism comprises a first and a second ring, which are both arranged around the rotor, so that their central axis is coaxial with the axis of rotation of the rotor.
  • a guide device integral in rotation with the rotor, is connected between the rotor and the first ring, so that the latter can slide axially along the rotor.
  • At least one connection element connects the first ring to the chute, so as to transform a vertical sliding of the first ring into a pivoting of the chute around its pivot axis.
  • the first and second rings are connected via a rolling ring.
  • the chute preferably comprises two lateral suspension arms and the rotor two lateral bearings, in which the suspension arms are suspended so that the chute can pivot around a substantially horizontal axis.
  • Connecting rods can then connect the first ring to each of the suspension arms of the chute, so as to transform a vertical sliding of the first ring into a pivoting of the chute around its pivot axis.
  • the guide device connected between the first ring and the rotor preferably comprises several vertical rails mounted on the rotor and rollers mounted on the first ring and guided in the rails. Excellent guidance is obtained when a pair of vertically spaced rollers is guided in each rail.
  • control means used to vary the vertical position of the second ring include a lever mechanism and a hydraulic cylinder which actuates the lever mechanism.
  • lever mechanism then preferably comprises an intermediate articulated lever provided with a support arm and an actuating arm.
  • the support arm advantageously has the form of a fork connected to the second ring at two diametrically opposite points, for example by means of connecting rods.
  • the actuating arm is connected to the outside of the support frame to the hydraulic cylinder, so that the hydraulic cylinder can be easily replaced and is also not exposed to an aggressive environment inside the support frame .
  • the support carcass is preferably a sealed carcass.
  • the lever then advantageously comprises a suspension pivot which carries the actuating arm and which exits in a sealed manner from the support carcass through a suspension bearing integrated in the sealed carcass.
  • the control means may however also include at least one hydraulic cylinder connected directly between the carcass of support and the second ring.
  • This hydraulic cylinder can for example be an annular hydraulic cylinder, which is arranged around the rotor so that its central axis is coaxial with the axis of rotation thereof, and whose annular piston is fixed to said second ring.
  • several hydraulic cylinders can be mounted inside the support frame and connected directly between the support frame and the second ring.
  • Fig. 1 a vertical section through a first execution of a device for distributing bulk materials according to the invention
  • Fig. 2 a section along the section line 2-2 in Figure 1;
  • Fig. 3 a section along the section line 3-3 in FIG. 1;
  • Fig. 4 a vertical section through a second embodiment of a device for distributing bulk materials according to the invention
  • Fig. 5 a vertical section through a third embodiment of a device for distributing bulk materials according to the invention.
  • the same references designate identical or similar elements.
  • FIG 1 schematically shows a device for distributing bulk materials 12 with a rotary chute 14 with variable angle of inclination.
  • This device is mounted on the head of a tank furnace 10 and is part of a loading installation for the latter. It is supplied by a lock hopper (not shown) which opens into a central supply channel 16 of the device 12.
  • the reference sign 18 indicates the central axis of the supply channel 16, which will usually be coaxial with the 'central axis of the shaft furnace 10.
  • the chute 14 is shown in two tilt positions. In solid lines, it has an inclination so as to deflect the bulk material flowing through the feed channel 16 in the peripheral zone of the furnace. In broken lines, its inclination is such that the bulk material is poured into the central zone of the shaft furnace 10.
  • the device for distributing bulk materials 12 will now be studied in more detail with simultaneous reference to FIGS. 1 to 3.
  • the chute 14 is provided at its upper end with two lateral suspension arms 20, 20 ′ (in FIG. 1, the arm 20 ′ is hidden by the arm 20).
  • In each of these two suspension bearings 24, 24 ' is mounted a suspension arm 20, 20' of the chute 14, so that these two bearings 24, 24 'define for the chute 14 a substantially horizontal pivot axis .
  • This pivot axis is identified by the reference numeral 26 in Figure 2.
  • the rotor 22 can be likened to a tube, which surrounds the supply channel 16, carries at its lower end the bearings 24, 24 ', and has at its upper end a suspension collar 30.
  • An electric motor or hydraulic 34 (preferably a variable speed motor) is used to rotate the rotor 22, and therefore also the chute 14, around the axis 18.
  • a pinion 36 of the drive motor 34 meshes with a ring gear 38, carried for example by the suspension collar 30.
  • the support carcass 32 is a sealed carcass supported itself on the head of the shaft furnace 10. It has at its upper end a plate 40, which is provided with a passage opening for a wear tube 42, which defines the supply channel 16. In an annular space remaining between the rotor 22 and the wear tube 42 is advantageously interposed a stationary rotating screen 44 equipped with a closed cooling circuit. This cooling screen 44 is used in particular to cool the interior surface of the rotor 22.
  • the carcass 34 is provided with an annular screen 46.
  • the latter is equipped with a cooling circuit 48 on its upper surface and thermal insulation 50 on its lower surface. It defines a central opening in which a collar 52 fitted to the lower end of the suspension rotor 22 is fitted.
  • the collar 52 comprises an upper plate 54, which is protected downwards by thermal insulation 56. Between the upper plate 54 and the thermal insulation 56 remains a vacuum 58 accessible from the lateral edge of the collar 52.
  • a pipe 60 is arranged along the central opening of the fixed annular screen 46. This pipe 60 is connected to a source of cooling, and it is provided over its entire length with outlet orifices oriented so as to be able to inject this cooling gas through the mouths 58 into the cavities of the collar 52.
  • the collar 52 is provided with two passage slots for the suspension arms 20, 20 ′ of the chute 14. Since the arms 20, 20 ′ are delimited at the two ends of the passage slots by surfaces cylindrical 62, 64, the axes of which coincide with the pivot axis of the chute 14, the arms 20, 20 ′ provide significant closure of the passage slots for any angle of inclination of the chute 14.
  • the mechanism which makes it possible to changing the inclination of the chute 14 will now be described in more detail with the aid of FIGS. 1 and 3.
  • the reference sign rence 66 locates a first ring arranged around the rotor 22 so that its central axis is coaxial with the axis of rotation thereof.
  • This first ring 66 is connected to the rotor 22 by means of a guide device, which allows the first ring to slide axially along the rotor 22.
  • this guide device comprises guide rails 681. .. 68 4 , and guide rollers 70 ⁇ ... 70 4 .
  • the guide rails 68 1 ... 68 are fixed vertically on the outer wall of the rotor 22.
  • the guide rollers 70 ⁇ ... 70 are mounted on the first ring 66 and guided vertically in the rails 681 ... 68 4 for center the first ring 66 relative to the rotor 22, during its vertical sliding. An excellent centering of the ring 66 in the rails 70 ⁇ ... 70 is obtained when each guide rail 681 ...
  • the 68 4 is associated with a pair of guide rollers 70 ⁇ , 70 ⁇ '(see Figure 1), which are mounted with vertical spacing on support arms 72, 72 'fixed to the first ring 66.
  • a connecting rod 73, 73' connects the first ring 66 to each of the suspension arms 20, 20 'of the chute 14.
  • These connecting rods 73 , 73 ′ transform a vertical movement of the first ring 66 into a pivoting of the chute 14 around its pivot axis 26.
  • the reference sign 74 marks a second ring arranged around the rotor 22 so that its central axis is coaxial to the axis of rotation 18 thereof.
  • a rolling ring 76 of large diameter connects this second ring 74 to the first ring 66.
  • This rolling ring 76 allows relative rotation of the two rings 66, 74, while ensuring the transmission of vertical forces. It follows that motionless control means in rotation can be connected to the second ring 74, to vary the vertical position of the first ring 66 on the suspension rotor 22 in rotation.
  • Figures 1 and 3 show a first execution of these control means. It is a lever mechanism actuated by a hydraulic cylinder 80 installed outside the support frame 32.
  • the lever mechanism comprises a lever with intermediate articulation provided with a support arm 82 and a actuating arm 84.
  • the support arm 82 has the form of a fork, which is connected by means of two connecting rods 86, 86 'to the second ring 74 at two diametrically opposite points.
  • Sure Figure 1 shows a front view of the rod 86.
  • the lever comprises two suspension pivots 88, 88 'housed in suspension bearings 90, 90'.
  • the latter are supported by the support carcass 32 so as to define a substantially horizontal pivot axis 92 for the lever 92.
  • the actuating arm 84 is carried by the suspension pivot 88, which protrudes from the support carcass 32 through the suspension bearing 90.
  • the hydraulic cylinder 80 is connected between the actuating arm 84 and a support arm 94, which is rigidly fixed to the support carcass 32.
  • a shortening of the hydraulic cylinder 80 causes the lever 82, 84 to pivot around its pivot axis 92 in the direction of the arrow 96.
  • the support arm 82 raises, by means of the connecting rods 86, 86 ′, the second ring 74.
  • the latter lifts, via the rolling ring 76, the first ring 66, which is in rotation with the suspension rotor 22 around the axis 18.
  • the connecting rods 73, 73 ′ then rotate the chute 14 around its pivot axis 26 in the direction of the arrow 98.
  • FIG. 4 we see a second embodiment of the control means for varying the vertical position of the second ring 74.
  • These are hydraulic cylinders uniformly distributed in the support frame 32 around the rotor 22.
  • the housings 102 of these cylinders 100 are supported vertically by a fixed ring 104, which is fixed to the support frame 32 vertically above the second ring 74.
  • the rods 106 of these cylinders 100 are connected, preferably using a spherical joint 108 , to the second ring 74.
  • a shortening of the hydraulic cylinders 100 lifts the second ring 74.
  • the latter lifts, by means of the rolling ring 76, the first ring 66, which is in rotation with the suspension rotor 22 around of the axis 18.
  • the connecting rods 73, 73 ′ then rotate the chute 14 about its pivot axis 26 in the direction of the arrow 98.
  • the reference sign 110 marks an indicator for the position of the hydraulic cylinders 100.
  • FIG. 5 we see a third embodiment of the control means for varying the vertical position of the second ring 74.
  • the annular hydraulic cylinder comprises an annular housing 122, which is supported vertically by a fixed ring 124, which is fixed to the support carcass 32 vertically above the second ring 74.
  • Its annular piston 126, which is locked in rotation, is fixed to the second ring 74.
  • the reference sign 128 marks a position indicator of the annular hydraulic cylinder 120.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)
  • Glass Compositions (AREA)
  • Chutes (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Discharge Of Articles From Conveyors (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

The invention concerns a device for dispensing bulk materials comprising a vertical rotor (22) wherein is suspended a chute (14) so as to pivot about a substantially horizontal pin (26). A guiding device (68i, 70i) interlocked in rotation with the rotor (22), is connected between the rotor (22) and a first ring (66), so that the latter can axially slide along the rotor (22). Connecting rods (73, 73') transform a vertical sliding of the first ring (66) causing the chute (14) to pivot. A roller ring (76) connects the first ring (66) to a second ring (74), whereto are connected control means, for example a lever actuated by a hydraulic actuator (80), capable of varying the vertical position of the two rings (66, 74) and the chute (14) inclination.

Description

Dispositif de répartition de matières en vrac. Device for distributing bulk materials.
La présente invention concerne un dispositif de répartition de matières en vrac avec goulotte rotative à angle d'inclinaison variable.The present invention relates to a device for distributing bulk materials with a rotary chute with variable angle of inclination.
De tels dispositifs sont par exemple utilisés dans des dispositifs de chargement de fours à cuve, notamment de hauts fourneaux, dans lesquels une goulotte rotative à angle d'inclinaison variable assure la distribution de la charge à l'intérieur du four à cuve. Ils comprennent plus particulièrement une carcasse de support dans laquelle est monté un rotor de suspension de façon à pouvoir être entraîné en rotation autour d'un axe de rotation sensiblement vertical. La goulotte est suspendue dans ce rotor de façon à pouvoir pivoter autour de son axe de suspension. Un mécanisme de pivotement permet de changer l'inclinaison de la goulotte pendant sa rotation. Le rotor est traversé axialement par un canal d'alimentation, de façon à ce que les matières en vrac, qui s'écoulent d'une trémie d'éclusage du dispositif de chargement, soient déversées sur la goulotte rotative, qui les répartit à l'intérieur du four à cuve. De tels dispositifs de répartition de matières en vrac sont par exemple décrits dans les documents WO 95/21272, US-A-5,022,806, US-A-4,941 ,792, US-A-4,368,813, US-A-3,814,403 et US-A-3,766,868. Dans ces dispositifs, le mécanisme de pivotement comprend un deuxième rotor, qui a un axe de rotation sensiblement coaxial au premier rotor dans lequel la goulotte est suspendue. Ce deuxième rotor peut être entraîné en rotation à une vitesse différente de celle du premier rotor, ce qui permet de produire un décalage angulaire variable entre les deux rotors. Un mécanisme, connecté entre le deuxième rotor et la goulotte, permet alors de transformer une variation du décalage angulaire entre les deux rotors en une variation de l'angle d'inclinai- son de la goulotte dans son pian de pivotement vertical.Such devices are, for example, used in devices for loading ovens with bowls, in particular blast furnaces, in which a rotary chute with variable angle of inclination ensures the distribution of the charge inside the bowl furnace. They more particularly comprise a support carcass in which is mounted a suspension rotor so as to be able to be driven in rotation about a substantially vertical axis of rotation. The chute is suspended in this rotor so as to be able to pivot around its suspension axis. A pivoting mechanism allows the inclination of the chute to be changed during its rotation. The rotor is axially traversed by a feed channel, so that the bulk materials, which flow from a lock hopper of the loading device, are discharged onto the rotary chute, which distributes them to the inside the shaft oven. Such devices for distributing bulk materials are for example described in documents WO 95/21272, US-A-5,022,806, US-A-4,941, 792, US-A-4,368,813, US-A-3,814,403 and US-A -3,766,868. In these devices, the pivoting mechanism comprises a second rotor, which has an axis of rotation substantially coaxial with the first rotor in which the chute is suspended. This second rotor can be rotated at a speed different from that of the first rotor, which makes it possible to produce a variable angular offset between the two rotors. A mechanism, connected between the second rotor and the chute, then makes it possible to transform a variation of the angular offset between the two rotors into a variation of the angle of inclination of the chute in its vertical pivot plane.
De façon générale, il importe de noter que le moment qui doit être transmis à la goulotte pour faire pivoter celle-ci autour de son axe de pivotement horizontal peut devenir très élevé, surtout si la goulotte est d'une construction très massive (comme c'est par exemple le cas sur un haut fourneau), et/ou si l'amplitude du pivotement est importante. Il s'ensuit que des efforts importants doivent être transmis par le mécanisme de pivotement de la goulotte.In general, it is important to note that the moment which must be transmitted to the chute to rotate it around its horizontal pivot axis can become very high, especially if the chute is of a very massive construction (as c 'is for example the case on a blast furnace), and / or if the amplitude of the pivoting is important. It follows that significant forces must be transmitted by the pivoting mechanism of the chute.
Un des problèmes à la base de la présente invention est de proposer un dispositif de répartition de matières en vrac avec goulotte rotative à angle d'inclinaison variable, dans lequel est utilisé un mécanisme de pivotement de la goulotte relativement simple, qui présente cependant d'excellentes qualités en ce qui concerne la transmission des efforts importants nécessaires au pivotement de la goulotte.One of the problems underlying the present invention is to provide a device for distributing bulk materials with a rotary chute with variable angle of inclination, in which a relatively simple chute pivoting mechanism is used, which however presents excellent qualities with regard to the transmission of the significant forces necessary for pivoting the chute.
Description générale de l'inventionGeneral description of the invention
Ce problème est résolu par un dispositif selon la revendication 1. Un tel dispositif comprend, de façon connue en soi, un rotor de suspension monté dans une carcasse de support de façon à pouvoir tourner autour d'un axe de rotation sensiblement vertical. La goulotte est suspendue à ce rotor de façon à pouvoir pivoter autour d'un axe de suspension sensiblement horizontal. Le rotor de suspension est traversé axialement par un canal d'alimentation de la goulotte. Il sera apprécié que la présente invention présente un mécanisme de pivotement très simple pour changer l'inclinaison de la goulotte suspendue dans le rotor. Ce mécanisme comprend un premier et un deuxième anneau, qui sont agencés tous les deux autour du rotor, de façon à ce que leur axe central soit coaxial à l'axe de rotation du rotor. Un dispositif de guidage, solidaire en rotation avec le rotor, est connecté entre le rotor et le premier anneau, de façon à ce que ce dernier puisse coulisser axialement le long du rotor. Au moins un élément de connexion connecte le premier anneau à la goulotte, de façon à transformer un coulissement vertical du premier anneau en un pivotement de la goulotte autour de son axe de pivotement. Le premier et le deuxième anneau sont connectés par l'intermédiaire d'un anneau de roulement. En changeant dès lors la position verticale du deuxième anneau immobile en rotation, on fait coulisser le premier anneau à l'aide du dispositif de guidage, verticalement le long du rotor, et on produit ainsi un pivotement de la goulotte autour de son axe de pivotement. Il sera apprécié que le mécanisme formé par les deux anneaux, l'anneau de roulement et le dispositif de guidage constitue une chaîne de transmission astucieuse et fiable pour d'importants efforts de pivotement.This problem is solved by a device according to claim 1. Such a device comprises, in a manner known per se, a suspension rotor mounted in a support carcass so as to be able to rotate around a substantially vertical axis of rotation. The chute is suspended from this rotor so as to be able to pivot around a substantially horizontal suspension axis. The suspension rotor is axially crossed by a feed channel of the chute. It will be appreciated that the present invention has a very simple pivoting mechanism for changing the inclination of the chute suspended in the rotor. This mechanism comprises a first and a second ring, which are both arranged around the rotor, so that their central axis is coaxial with the axis of rotation of the rotor. A guide device, integral in rotation with the rotor, is connected between the rotor and the first ring, so that the latter can slide axially along the rotor. At least one connection element connects the first ring to the chute, so as to transform a vertical sliding of the first ring into a pivoting of the chute around its pivot axis. The first and second rings are connected via a rolling ring. By then changing the vertical position of the second stationary ring in rotation, the first ring is made to slide using the guide device, vertically along the rotor, and this produces a pivoting of the chute around its pivot axis. . It will be appreciated that the mechanism formed by the two rings, the rolling ring and the guide device constitutes a chain of clever and reliable transmission for high pivoting forces.
La goulotte comprend de préférence deux bras latéraux de suspension et le rotor deux paliers latéraux, dans lesquels les bras de suspension sont suspendus de façon à ce que la goulotte puisse pivoter autour d'un axe sensi- blement horizontal. Des bielles peuvent alors connecter le premier anneau à chacun des bras de suspension de la goulotte, de façon à transformer un coulissement vertical du premier anneau en un pivotement de la goulotte autour de son axe de pivotement.The chute preferably comprises two lateral suspension arms and the rotor two lateral bearings, in which the suspension arms are suspended so that the chute can pivot around a substantially horizontal axis. Connecting rods can then connect the first ring to each of the suspension arms of the chute, so as to transform a vertical sliding of the first ring into a pivoting of the chute around its pivot axis.
Le dispositif de guidage connecté entre le premier anneau et le rotor com- prend de préférence plusieurs rails verticaux montés sur le rotor et des galets montés sur le premier anneau et guidés dans les rails. Un excellent guidage est obtenu lorsqu'une paire de galets espacés verticalement est guidé dans chaque rail.The guide device connected between the first ring and the rotor preferably comprises several vertical rails mounted on the rotor and rollers mounted on the first ring and guided in the rails. Excellent guidance is obtained when a pair of vertically spaced rollers is guided in each rail.
Dans une exécution avantageuse, les moyens de commande utilisés pour faire varier la position verticale du deuxième anneau comprennent un mécanisme à levier et un cylindre hydraulique qui actionne le mécanisme à levier. Ce . mécanisme à levier comprend alors de préférence un levier à articulation intermédiaire muni d'un bras de support et d'un bras d'actionnement. Le bras de support a avantageusement la forme d'une fourche connectée au deuxième anneau sur deux points diamétralement opposés , par exemple par l'intermédiaire de bielles. Le bras d'actionnement est connecté à l'extérieur de la carcasse de support au cylindre hydraulique, de sorte que ce dernier peut être facilement remplacé et n'est pas non plus exposé à un environnement agressif à l'intérieur de la carcasse de support. Si le dispositif de répartition de matières en vrac est par exemple utilisé sur un four à cuve, la carcasse de support est de préférence une carcasse étanche. Le levier comprend alors avantageusement un pivot de suspension qui porte le bras d'actionnement et qui sort de façon étanche de la carcasse de support à travers un palier de suspension intégré dans la carcasse étanche. Les moyens de commande peuvent cependant aussi comprendre au moins un cylindre hydraulique connecté directement entre la carcasse de support et le deuxième anneau. Ce cylindre hydraulique peut par exemple être un cylindre hydraulique annulaire, qui est agencé autour du rotor de façon à ce que son axe central soit coaxial à l'axe de rotation de celui-ci, et dont le piston annulaire est fixé audit deuxième anneau. Alternativement, plusieurs cylindres hydrauliques peuvent être montés à l'intérieur de la carcasse de support et connectés directement entre la carcasse de support et le deuxième anneau.In an advantageous embodiment, the control means used to vary the vertical position of the second ring include a lever mechanism and a hydraulic cylinder which actuates the lever mechanism. This. lever mechanism then preferably comprises an intermediate articulated lever provided with a support arm and an actuating arm. The support arm advantageously has the form of a fork connected to the second ring at two diametrically opposite points, for example by means of connecting rods. The actuating arm is connected to the outside of the support frame to the hydraulic cylinder, so that the hydraulic cylinder can be easily replaced and is also not exposed to an aggressive environment inside the support frame . If the device for distributing bulk materials is for example used on a shaft furnace, the support carcass is preferably a sealed carcass. The lever then advantageously comprises a suspension pivot which carries the actuating arm and which exits in a sealed manner from the support carcass through a suspension bearing integrated in the sealed carcass. The control means may however also include at least one hydraulic cylinder connected directly between the carcass of support and the second ring. This hydraulic cylinder can for example be an annular hydraulic cylinder, which is arranged around the rotor so that its central axis is coaxial with the axis of rotation thereof, and whose annular piston is fixed to said second ring. Alternatively, several hydraulic cylinders can be mounted inside the support frame and connected directly between the support frame and the second ring.
Il sera apprécié qu'on présente aussi des solutions simples et efficaces pour protéger les éléments à l'intérieur de la carcasse de support notamment contre la chaleur. Ainsi, on propose par exemple d'intercaler un écran tubulaire immobile en rotation équipé d'un circuit de refroidissement entre le canal d'alimentation et le rotor de suspension. On propose aussi de munir la carcasse de support à son extrémité inférieure d'un écran annulaire fixe, qui est équipé d'un circuit de refroidissement et définit une ouverture centrale circulaire, tandis que le rotor de suspension est équipé à son extrémité inférieure d'un collet qui est ajusté avec jeu dans cette ouverture centrale circulaire. Une conduite d'injection d'un gaz est dans ce cas avantageusement agencée le long de l'ouverture centrale circulaire de l'écran annulaire fixe, de façon à pouvoir injecter un gaz de refroidissement dans des cavités débouchant dans le bord latéral du collet. D'autres particularités et caractéristiques de l'invention ressortiront de la description détaillée de quelques modes de réalisation avantageux présentés ci-dessous, à titre d'illustration, en se référant aux dessins annexés. Ceux-ci montrent:It will be appreciated that simple and effective solutions are also presented to protect the elements inside the support carcass, in particular against heat. Thus, it is proposed for example to interpose a tubular screen which is stationary in rotation equipped with a cooling circuit between the supply channel and the suspension rotor. It is also proposed to provide the support carcass at its lower end with a fixed annular screen, which is equipped with a cooling circuit and defines a circular central opening, while the suspension rotor is equipped at its lower end with a collar which is adjusted with play in this circular central opening. A gas injection pipe is advantageously arranged in this case along the circular central opening of the fixed annular screen, so as to be able to inject a cooling gas into cavities opening into the lateral edge of the collar. Other features and characteristics of the invention will emerge from the detailed description of some advantageous embodiments presented below, by way of illustration, with reference to the accompanying drawings. These show:
Fig. 1 : une coupe verticale à travers une première exécution d'un dispositif de répartition de matières en vrac selon l'invention;Fig. 1: a vertical section through a first execution of a device for distributing bulk materials according to the invention;
Fig. 2: une coupe selon la ligne de coupe 2-2 de la Figure 1 ;Fig. 2: a section along the section line 2-2 in Figure 1;
Fig. 3: une coupe selon la ligne de coupe 3-3 de la Figure 1 ;Fig. 3: a section along the section line 3-3 in FIG. 1;
Fig. 4: une coupe verticale à travers une deuxième exécution d'un dispositif de répartition de matières en vrac selon l'invention; Fig. 5: une coupe verticale à travers une troisième exécution d'un dispositif de répartition de matières en vrac selon l'invention. Sur les Figures, les mêmes références désignent des éléments identiques ou similaires.Fig. 4: a vertical section through a second embodiment of a device for distributing bulk materials according to the invention; Fig. 5: a vertical section through a third embodiment of a device for distributing bulk materials according to the invention. In the Figures, the same references designate identical or similar elements.
La Figure 1 représente de façon schématique un dispositif de répartition de matières en vrac 12 avec une goulotte rotative 14 à angle d'inclinaison variable. Ce dispositif est monté sur la tête d'un four à cuve 10 et fait partie d'une installation de chargement de ce dernier. Il est alimenté par une trémie d'éclusage (non montrée) qui débouche dans un canal d'alimentation central 16 du dispositif 12. Le signe de référence 18 indique l'axe central du canal d'alimentation 16, qui sera habituellement coaxial à l'axe central du four à cuve 10. Sur la Figure 1 , la goulotte 14 est montrée dans deux positions d'inclinaison. En traits pleins, elle a une inclinaison de façon à dévier la matière en vrac s'écoulant à travers le canal d'alimentation 16 dans la zone périphérique du four. En traits interrompus, son inclinaison est telle que la matière en vrac est déversée dans la zone centrale du four à cuve 10. Le dispositif de répartition de matières en vrac 12 sera maintenant étudié plus en détail en se référant simultanément aux Figures 1 à 3. La goulotte 14 est munie à son extrémité supérieure de deux bras de suspension latéraux 20, 20' (sur la Figure 1, le bras 20' est caché par le bras 20). Un rotor de suspension 22, suspendu dans une carcasse de support 32 de façon à pouvoir tourner autour de l'axe 18, supporte deux paliers de suspension 24, 24'. Dans chacun de ces deux paliers de suspension 24, 24' est monté un bras de suspension 20, 20' de la goulotte 14, de façon à ce que ces deux paliers 24, 24' définissent pour la goulotte 14 un axe de pivotement sensiblement horizontal. Cet axe de pivotement est repéré par le chiffre de référence 26 sur la Figure 2. Le rotor 22 peut être assimilé à un tube, qui entoure le canal d'alimentation 16, porte à son extrémité inférieure les paliers 24, 24', et possède à son extrémité supérieure un collet de suspension 30. Un roulement de grand diamètre 28, monté sur le collet de suspension 30, suspend le rotor 22 dans la carcasse de support 32, de façon à définir son axe de rotation 18. Un moteur électrique ou hydraulique 34 (il s'agit de préférence d'un moteur à vitesse de rotation variable) sert à entraîner en rotation le rotor 22, et dès lors aussi la goulotte 14, autour de l'axe 18. A cette fin, un pignon 36 du moteur d'entraînement 34 s'engrène avec une couronne dentée 38, portée par exemple par le collet de suspension 30.Figure 1 schematically shows a device for distributing bulk materials 12 with a rotary chute 14 with variable angle of inclination. This device is mounted on the head of a tank furnace 10 and is part of a loading installation for the latter. It is supplied by a lock hopper (not shown) which opens into a central supply channel 16 of the device 12. The reference sign 18 indicates the central axis of the supply channel 16, which will usually be coaxial with the 'central axis of the shaft furnace 10. In Figure 1, the chute 14 is shown in two tilt positions. In solid lines, it has an inclination so as to deflect the bulk material flowing through the feed channel 16 in the peripheral zone of the furnace. In broken lines, its inclination is such that the bulk material is poured into the central zone of the shaft furnace 10. The device for distributing bulk materials 12 will now be studied in more detail with simultaneous reference to FIGS. 1 to 3. The chute 14 is provided at its upper end with two lateral suspension arms 20, 20 ′ (in FIG. 1, the arm 20 ′ is hidden by the arm 20). A suspension rotor 22, suspended in a support carcass 32 so as to be able to rotate about the axis 18, supports two suspension bearings 24, 24 '. In each of these two suspension bearings 24, 24 'is mounted a suspension arm 20, 20' of the chute 14, so that these two bearings 24, 24 'define for the chute 14 a substantially horizontal pivot axis . This pivot axis is identified by the reference numeral 26 in Figure 2. The rotor 22 can be likened to a tube, which surrounds the supply channel 16, carries at its lower end the bearings 24, 24 ', and has at its upper end a suspension collar 30. A large diameter bearing 28, mounted on the suspension collar 30, suspends the rotor 22 in the support carcass 32, so as to define its axis of rotation 18. An electric motor or hydraulic 34 (preferably a variable speed motor) is used to rotate the rotor 22, and therefore also the chute 14, around the axis 18. To this end, a pinion 36 of the drive motor 34 meshes with a ring gear 38, carried for example by the suspension collar 30.
La carcasse de support 32 est une carcasse étanche supportée elle- même sur la tête du four à cuve 10. Elle présente à son extrémité supérieure une plaque 40, qui est munie d'une ouverture de passage pour un tube d'usure 42, qui définit le canal d'alimentation 16. Dans un espace annulaire subsistant entre le rotor 22 et le tube d'usure 42 est avantageusement intercalé un écran immobile en rotation 44 équipé d'un circuit de refroidissement fermé. Cet écran de refroidissement 44 sert notamment à refroidir la surface intérieure du rotor 22.The support carcass 32 is a sealed carcass supported itself on the head of the shaft furnace 10. It has at its upper end a plate 40, which is provided with a passage opening for a wear tube 42, which defines the supply channel 16. In an annular space remaining between the rotor 22 and the wear tube 42 is advantageously interposed a stationary rotating screen 44 equipped with a closed cooling circuit. This cooling screen 44 is used in particular to cool the interior surface of the rotor 22.
A son extrémité inférieure, la carcasse 34 est munie d'un écran annulaire 46. Ce dernier est équipé d'un circuit de refroidissement 48 sur sa surface supérieure et d'une isolation thermique 50 sur sa surface inférieure. Il définit une ouverture centrale dans laquelle est ajusté un collet 52 équipant l'extrémité inférieure du rotor de suspension 22. Le collet 52 comprend une plaque supérieure 54, qui est protégée vers le bas par une isolation thermique 56. Entre la plaque supérieure 54 et l'isolation thermique 56 subsiste un vide 58 accessible à partir du bord latéral du collet 52. Une conduite 60 est agencée le long de l'ouverture centrale de l'écran annulaire fixe 46. Cette conduite 60 est raccordée à une source de gaz de refroidissement, et elle est munie sur toute sa longueur d'orifices de sortie orientés de façon à pouvoir injecter ce gaz de refroidissement à travers les embouchures 58 dans les cavités du collet 52.At its lower end, the carcass 34 is provided with an annular screen 46. The latter is equipped with a cooling circuit 48 on its upper surface and thermal insulation 50 on its lower surface. It defines a central opening in which a collar 52 fitted to the lower end of the suspension rotor 22 is fitted. The collar 52 comprises an upper plate 54, which is protected downwards by thermal insulation 56. Between the upper plate 54 and the thermal insulation 56 remains a vacuum 58 accessible from the lateral edge of the collar 52. A pipe 60 is arranged along the central opening of the fixed annular screen 46. This pipe 60 is connected to a source of cooling, and it is provided over its entire length with outlet orifices oriented so as to be able to inject this cooling gas through the mouths 58 into the cavities of the collar 52.
Reste à signaler que le collet 52 est muni de deux fentes de passage pour les bras de suspension 20, 20' de la goulotte 14. Vu que les bras 20, 20' sont délimités au niveau des deux extrémités des fentes de passage par des surfaces cylindriques 62, 64, dont les axes coïncident avec l'axe de pivotement de la goulotte 14, les bras 20, 20' assurent une obturation importante des fentes de passage pour tout angle d'inclinaison de la goulotte 14. Le mécanisme qui permet de changer l'inclinaison de la goulotte 14 sera maintenant décrit plus en détail à l'aide des Figures 1 et 3. Le signe de réfé- rence 66 repère un premier anneau agencé autour du rotor 22 de façon à ce que son axe central soit coaxial à l'axe de rotation de celui-ci. Ce premier anneau 66 est connecté au rotor 22 par l'intermédiaire d'un dispositif de guidage, qui permet au premier anneau de coulisser axialement le long du rotor 22. Dans une exécution préférée, ce dispositif de guidage comprend des rails de guidage 681 ... 684, et des galets guidage 70ι ... 704. Les rails de guidage 681 ... 68 sont fixés verticalement sur la paroi extérieure du rotor 22. Les galets de guidage 70ι ... 70 sont montés sur le premier anneau 66 et guidés verticalement dans les rails 681 ... 684 pour centrer le premier anneau 66 par rapport au rotor 22, lors de son coulissement vertical. Un excellent centrage de l'anneau 66 dans les rails 70ι ... 70 est obtenu lorsqu'à chaque rail de guidage 681 ... 684 est associée une paire de galets de guidage 70ι, 70ι' (cf. Figure 1), qui sont montés avec espacement vertical sur des bras de support 72, 72' fixés au premier anneau 66. Une bielle 73, 73' connecte le premier anneau 66 à chacun des bras de suspension 20, 20' de la goulotte 14. Ces bielles 73, 73' transforment un déplacement vertical du premier anneau 66 en un pivotement de la goulotte 14 autour de son axe de pivotement 26. Le signe de référence 74 repère un deuxième anneau agencé autour du rotor 22 de façon à ce que son axe central soit coaxial à l'axe de rotation 18 de celui-ci. Un anneau de roule- ment 76 de grand diamètre connecte ce deuxième anneau 74 au premier anneau 66. Cet anneau de roulement 76 permet une rotation relative des deux anneaux 66, 74, tout en assurant une transmission d'efforts verticaux. Il s'ensuit que des moyens de commande immobiles en rotation peuvent être connectés au deuxième anneau 74, pour faire varier la position verticale du premier anneau 66 sur le rotor de suspension 22 en rotation.It remains to be noted that the collar 52 is provided with two passage slots for the suspension arms 20, 20 ′ of the chute 14. Since the arms 20, 20 ′ are delimited at the two ends of the passage slots by surfaces cylindrical 62, 64, the axes of which coincide with the pivot axis of the chute 14, the arms 20, 20 ′ provide significant closure of the passage slots for any angle of inclination of the chute 14. The mechanism which makes it possible to changing the inclination of the chute 14 will now be described in more detail with the aid of FIGS. 1 and 3. The reference sign rence 66 locates a first ring arranged around the rotor 22 so that its central axis is coaxial with the axis of rotation thereof. This first ring 66 is connected to the rotor 22 by means of a guide device, which allows the first ring to slide axially along the rotor 22. In a preferred embodiment, this guide device comprises guide rails 681. .. 68 4 , and guide rollers 70ι ... 70 4 . The guide rails 68 1 ... 68 are fixed vertically on the outer wall of the rotor 22. The guide rollers 70ι ... 70 are mounted on the first ring 66 and guided vertically in the rails 681 ... 68 4 for center the first ring 66 relative to the rotor 22, during its vertical sliding. An excellent centering of the ring 66 in the rails 70ι ... 70 is obtained when each guide rail 681 ... 68 4 is associated with a pair of guide rollers 70ι, 70ι '(see Figure 1), which are mounted with vertical spacing on support arms 72, 72 'fixed to the first ring 66. A connecting rod 73, 73' connects the first ring 66 to each of the suspension arms 20, 20 'of the chute 14. These connecting rods 73 , 73 ′ transform a vertical movement of the first ring 66 into a pivoting of the chute 14 around its pivot axis 26. The reference sign 74 marks a second ring arranged around the rotor 22 so that its central axis is coaxial to the axis of rotation 18 thereof. A rolling ring 76 of large diameter connects this second ring 74 to the first ring 66. This rolling ring 76 allows relative rotation of the two rings 66, 74, while ensuring the transmission of vertical forces. It follows that motionless control means in rotation can be connected to the second ring 74, to vary the vertical position of the first ring 66 on the suspension rotor 22 in rotation.
Sur les Figures 1 et 3 on voit une première exécution de ces moyens de commande. Il s'agit d'un mécanisme à levier actionné par un cylindre hydraulique 80 installé à l'extérieur de la carcasse de support 32. Le mécanisme à levier comprend un levier à articulation intermédiaire muni d'un bras de support 82 et d'un bras d'actionnement 84. Sur la Figure 3 on voit que le bras de support 82 a la forme d'une fourche, qui est connectée à l'aide de deux bielles 86, 86' au deuxième anneau 74 sur deux points diamétralement opposés . Sur la Figure 1 on voit une vue de front de la bielle 86. Le levier comprend deux pivots de suspension 88, 88' logés dans des paliers de suspension 90, 90'. Ces derniers sont supportés par la carcasse de support 32 de façon à définir pour le levier un axe de pivotement sensiblement horizontal 92. Le bras d'actionnement 84 est porté par le pivot de suspension 88, qui sort de façon étanche de la carcasse de support 32 à travers le palier de suspension 90. Le cylindre hydraulique 80 est connecté entre le bras d'actionnement 84 et un bras d'appui 94, qui est fixé rigidement à la carcasse de support 32.Figures 1 and 3 show a first execution of these control means. It is a lever mechanism actuated by a hydraulic cylinder 80 installed outside the support frame 32. The lever mechanism comprises a lever with intermediate articulation provided with a support arm 82 and a actuating arm 84. In FIG. 3, it can be seen that the support arm 82 has the form of a fork, which is connected by means of two connecting rods 86, 86 'to the second ring 74 at two diametrically opposite points. Sure Figure 1 shows a front view of the rod 86. The lever comprises two suspension pivots 88, 88 'housed in suspension bearings 90, 90'. The latter are supported by the support carcass 32 so as to define a substantially horizontal pivot axis 92 for the lever 92. The actuating arm 84 is carried by the suspension pivot 88, which protrudes from the support carcass 32 through the suspension bearing 90. The hydraulic cylinder 80 is connected between the actuating arm 84 and a support arm 94, which is rigidly fixed to the support carcass 32.
Dans la Figure 1 , un raccourcissement du cylindre hydraulique 80 fait pi- voter le levier 82, 84 autour de son axe de pivotement 92 dans le sens de la flèche 96. Le bras de support 82 soulève, par l'intermédiaire des bielles 86, 86', le deuxième anneau 74. Ce dernier soulève, par l'intermédiaire de l'anneau de roulement 76, le premier anneau 66, qui est en rotation avec le rotor de suspension 22 autour de l'axe 18. Les bielles 73, 73' font alors pivoter la goulotte 14 autour de son axe de pivotement 26 dans le sens de la flèche 98. Vu que le centre de gravité de la goulotte se trouve dans la position initiale de la goulotte (c'est-à-dire la position montrée en traits pleins) à droite du plan vertical contenant l'axe de pivotement 26 de la goulotte 14, il suffit de décharger le cylindre 80 pour faire pivoter la goulotte dans le sens inverse de la flèche 98 sous l'effet de son propre poids.In FIG. 1, a shortening of the hydraulic cylinder 80 causes the lever 82, 84 to pivot around its pivot axis 92 in the direction of the arrow 96. The support arm 82 raises, by means of the connecting rods 86, 86 ′, the second ring 74. The latter lifts, via the rolling ring 76, the first ring 66, which is in rotation with the suspension rotor 22 around the axis 18. The connecting rods 73, 73 ′ then rotate the chute 14 around its pivot axis 26 in the direction of the arrow 98. Since the center of gravity of the chute is in the initial position of the chute (that is to say the position shown in solid lines) to the right of the vertical plane containing the pivot axis 26 of the chute 14, it suffices to unload the cylinder 80 to rotate the chute in the opposite direction to the arrow 98 under the effect of its own weight.
Sur la Figure 4 on voit une deuxième exécution des moyens de commande pour faire varier la position verticale du deuxième anneau 74. Il s'agit de cylindres hydrauliques uniformément répartis dans la carcasse de support 32 autour du rotor 22. Les boîtiers 102 de ces cylindres 100 sont supportés verticalement par un anneau fixe 104, qui est fixé à la carcasse de support 32 verticalement au-dessus du deuxième anneau 74. Les tiges 106 de ces cylindres 100 sont connectés, de préférence à l'aide d'une articulation sphérique 108, au deuxième anneau 74. Un raccourcissement des cylindres hydrauliques 100 soulève le deuxième anneau 74. Ce dernier soulève, par l'intermédiaire de l'anneau de roulement 76, le premier anneau 66, qui est en rotation avec le rotor de suspension 22 autour de l'axe 18. Les bielles 73, 73' font alors pivoter la goulotte 14 autour de son axe de pivotement 26 dans le sens de la flèche 98. Reste à noter que le signe de référence 110 repère un indicateur de position des cylindres hydrauliques 100.In Figure 4 we see a second embodiment of the control means for varying the vertical position of the second ring 74. These are hydraulic cylinders uniformly distributed in the support frame 32 around the rotor 22. The housings 102 of these cylinders 100 are supported vertically by a fixed ring 104, which is fixed to the support frame 32 vertically above the second ring 74. The rods 106 of these cylinders 100 are connected, preferably using a spherical joint 108 , to the second ring 74. A shortening of the hydraulic cylinders 100 lifts the second ring 74. The latter lifts, by means of the rolling ring 76, the first ring 66, which is in rotation with the suspension rotor 22 around of the axis 18. The connecting rods 73, 73 ′ then rotate the chute 14 about its pivot axis 26 in the direction of the arrow 98. It should be noted that the reference sign 110 marks an indicator for the position of the hydraulic cylinders 100.
Sur la Figure 5 on voit une troisième exécution des moyens de commande pour faire varier la position verticale du deuxième anneau 74. Il s'agit d'un cylindre hydraulique annulaire 120 agencé autour du rotor de façon à ce que son axe central soit coaxial à l'axe de rotation de celui-ci. Le cylindre hydraulique annulaire comprend un boîtier annulaire 122, qui est supporté verticalement par un anneau fixe 124, qui est fixé à la carcasse de support 32 verticalement au-dessus du deuxième anneau 74. Son piston annulaire 126, qui est bloqué en rotation, est fixé au deuxième anneau 74. Le signe de référence 128 repère un indicateur de position du cylindre hydraulique annulaire 120. In Figure 5 we see a third embodiment of the control means for varying the vertical position of the second ring 74. It is an annular hydraulic cylinder 120 arranged around the rotor so that its central axis is coaxial with the axis of rotation thereof. The annular hydraulic cylinder comprises an annular housing 122, which is supported vertically by a fixed ring 124, which is fixed to the support carcass 32 vertically above the second ring 74. Its annular piston 126, which is locked in rotation, is fixed to the second ring 74. The reference sign 128 marks a position indicator of the annular hydraulic cylinder 120.

Claims

Revendications claims
1. Dispositif de répartition de matières en vrac avec goulotte (14) rotative à angle d'inclinaison variable comprenant: une carcasse de support (32); une goulotte (14) de déversement pour les matières en vrac; un rotor de suspension (22) monté dans ladite carcasse de support (32) de façon à pouvoir tourner autour d'un axe de rotation sensiblement vertical, ladite goulotte (14) étant suspendue audit rotor de suspension (22) de façon à pouvoir pivoter autour d'un axe de suspension sensiblement horizontal; un moyen d'entraînement (34) pour entraîner ledit rotor de suspension (22) autour de son axe de rotation; un canal d'alimentation de la goulotte (14) qui traverse ledit rotor de suspension (22); et un mécanisme de pivotement pour faire pivoter la goulotte (14) autour de son axe de suspension et changer ainsi l'inclinaison de la goulotte (14); caractérisé en ce que ledit mécanisme de pivotement de la goulotte (14) comprend: un premier anneau (66) agencé autour dudit rotor de suspension (22) de façon à ce que son axe central soit coaxial à l'axe de rotation de celui-ci; un dispositif de guidage (68), 70,) solidaire en rotation avec ledit rotor de suspension (22) et connecté entre ledit rotor de suspension (22) et ledit premier anneau (66), de façon à ce que ledit premier anneau (66) puisse coulisser axialement le long dudit rotor de suspension (22); au moins un élément de connexion (73, 73') connectant ledit premier anneau (66) à la goulotte (14), de façon à transformer un coulissement vertical dudit premier anneau (66) en un pivotement de la goulotte (14) autour de son axe de pivotement; un deuxième anneau (74) agencé autour dudit rotor de suspension (22) de façon à ce que son axe central soit coaxial à l'axe de rotation de celui-ci; un anneau de roulement (76) connectant ledit premier anneau (66) audit deuxième anneau (74); et des moyens de commande connectés audit deuxième anneau (74), pour faire varier la position verticale de celui-ci.1. A device for distributing bulk materials with a rotating chute (14) with variable angle of inclination comprising: a support carcass (32); a discharge chute (14) for bulk materials; a suspension rotor (22) mounted in said support frame (32) so as to be able to rotate about a substantially vertical axis of rotation, said chute (14) being suspended from said suspension rotor (22) so as to be able to pivot around a substantially horizontal axis of suspension; drive means (34) for driving said suspension rotor (22) about its axis of rotation; a chute supply channel (14) which passes through said suspension rotor (22); and a pivoting mechanism for pivoting the chute (14) about its suspension axis and thereby changing the inclination of the chute (14); characterized in that said chute pivoting mechanism (14) comprises: a first ring (66) arranged around said suspension rotor (22) so that its central axis is coaxial with the axis of rotation thereof this; a guide device (68), 70,) integral in rotation with said suspension rotor (22) and connected between said suspension rotor (22) and said first ring (66), so that said first ring (66 ) can slide axially along said suspension rotor (22); at least one connection element (73, 73 ') connecting said first ring (66) to the trough (14), so as to transform a vertical sliding of said first ring (66) into a pivoting of the trough (14) around its pivot axis; a second ring (74) arranged around said suspension rotor (22) so that its central axis is coaxial with the axis of rotation thereof; a bearing ring (76) connecting said first ring (66) to said second ring (74); and control means connected to said second ring (74), for varying the vertical position thereof.
2. Dispositif selon la revendication 1 , caractérisé en ce que ladite goulotte (14) comprend deux bras latéraux de suspension (20, 20') et ledit rotor de suspension (22) comprend deux paliers latéraux (24, 24') dans lesquels iesdits bras de suspension (20, 20') sont suspendus de façon à ce que la goulotte (14) puisse pivoter autour d'un axe d'un axe sensiblement horizontal.2. Device according to claim 1, characterized in that said chute (14) comprises two lateral suspension arms (20, 20 ') and said suspension rotor (22) comprises two lateral bearings (24, 24') in which said ies suspension arms (20, 20 ') are suspended so that the chute (14) can pivot about an axis of a substantially horizontal axis.
3. Dispositif selon la revendication 2, caractérisé en ce que des bielles (73, 73') connectent ledit premier anneau (66) à chacun des bras de suspension (20, 20') de la goulotte (14), de façon à transformer un coulissement vertical dudit premier anneau (66) en un pivotement de la goulotte (14) autour de son axe de pivotement.3. Device according to claim 2, characterized in that connecting rods (73, 73 ') connect said first ring (66) to each of the suspension arms (20, 20') of the chute (14), so as to transform a vertical sliding of said first ring (66) in a pivoting of the chute (14) around its pivot axis.
4. Dispositif selon la revendication 1 , 2 ou 3, caractérisé en ce que ledit dispositif de guidage comprend plusieurs rails verticaux (68,) montés sur ledit rotor de suspension (22) et des galets (70j, 70Y) montés sur ledit premier anneau (66), Iesdits galets (70„ 70 étant guidés dans Iesdits rails (680-4. Device according to claim 1, 2 or 3, characterized in that said guide device comprises several vertical rails (68,) mounted on said suspension rotor (22) and rollers (70j, 70Y) mounted on said first ring (66), said rollers (70 „70 being guided in said rails (680-
5. Dispositif selon la revendication 4, caractérisé en ce qu'une paire de galets (70ι, 700 espacés verticalement sont guidés dans chaque rail (68j). 5. Device according to claim 4, characterized in that a pair of rollers (70ι, 700 vertically spaced are guided in each rail (68j).
6. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que Iesdits moyens de commande comprennent un mécanisme à levier et un cylindre hydraulique (80), ledit cylindre hydraulique (80) actionnant ledit levier.6. Device according to any one of claims 1 to 5, characterized in that said control means comprise a lever mechanism and a hydraulic cylinder (80), said hydraulic cylinder (80) actuating said lever.
7. Dispositif selon la revendication 6, caractérisé en ce que ledit mécanisme à levier comprend un levier à articulation intermédiaire comprenant un bras de support (82) et un bras d'actionnement (84), ledit bras de support (82) ayant la forme d'une fourche et étant connecté audit deuxième anneau (74) sur deux points diamétralement opposés, et ledit bras d'actionnement (84) étant connecté à l'extérieur de ladite carcasse de support (32) audit cylindre hy- draulique (80).7. Device according to claim 6, characterized in that said lever mechanism comprises a lever with intermediate articulation comprising an arm of support (82) and an actuating arm (84), said support arm (82) having the shape of a fork and being connected to said second ring (74) at two diametrically opposite points, and said actuating arm ( 84) being connected to the outside of said support frame (32) to said hydraulic cylinder (80).
8. Dispositif selon la revendication 7, caractérisé en ce que ledit levier comprend au moins un pivot de suspension (88, 88') et ladite carcasse de support (32) est une carcasse étanche qui comprend au moins un palier de suspension (90, 90') dans lequel ledit pivot de suspension (88, 88') est logé, ledit bras d'actionnement (84) étant porté par ledit pivot de suspension (88), qui sort de façon étanche de ladite carcasse de support (32) à travers ledit palier de suspension (90).8. Device according to claim 7, characterized in that said lever comprises at least one suspension pivot (88, 88 ') and said support carcass (32) is a sealed carcass which comprises at least one suspension bearing (90, 90 ') in which said suspension pivot (88, 88') is housed, said actuating arm (84) being carried by said suspension pivot (88), which protrudes from said support frame (32) through said suspension bearing (90).
9. Dispositif selon la revendication 7 ou 8, caractérisé en ce que ledit mécanisme à levier comprend des bielles (86, 86') connectant les bras de la four- che (82) audit deuxième anneau (74) sur deux points diamétralement opposés.9. Device according to claim 7 or 8, characterized in that said lever mechanism comprises connecting rods (86, 86 ') connecting the arms of the fork (82) to said second ring (74) at two diametrically opposite points.
10. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que Iesdits moyens de commande comprennent au moins un cylindre hydraulique connecté directement entre la carcasse de support (32) et ledit deuxième anneau (74).10. Device according to any one of claims 1 to 5, characterized in that said control means comprise at least one hydraulic cylinder connected directly between the support carcass (32) and said second ring (74).
11. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que Iesdits moyens de commande comprennent un cylindre hydraulique annulaire (120) agencé autour dudit rotor de suspension (22) de façon à ce que son axe central soit coaxial à l'axe de rotation de celui-ci, ledit cylindre hydraulique annulaire (120) comprenant un piston annulaire (126) qui est fixé audit deuxième anneau (74).11. Device according to any one of claims 1 to 5, characterized in that said control means comprise an annular hydraulic cylinder (120) arranged around said suspension rotor (22) so that its central axis is coaxial with the axis of rotation thereof, said annular hydraulic cylinder (120) comprising an annular piston (126) which is fixed to said second ring (74).
12. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que Iesdits moyens de commande comprennent plusieurs cylindres hydrauliques (100) montés à l'intérieur de ladite carcasse de support (32) et con- nectés directement entre la carcasse de support (32) et ledit deuxième anneau (74). 12. Device according to any one of claims 1 to 5, characterized in that said control means comprise several hydraulic cylinders (100) mounted inside said support carcass (32) and connected directly between the carcass support (32) and said second ring (74).
13. Dispositif selon l'une quelconque des revendications 1 à 12, caractérisé par un écran tubulaire (44) immobile en rotation intercalé entre ledit canal d'alimentation (16) et ledit rotor de suspension (22), ledit écran tubulaire (44) étant équipé d'un circuit de refroidissement. 13. Device according to any one of claims 1 to 12, characterized by a tubular screen (44) stationary in rotation interposed between said supply channel (16) and said suspension rotor (22), said tubular screen (44) being equipped with a cooling circuit.
14. Dispositif selon l'une quelconque des revendications 1 à 13, caractérisé en ce que: ladite carcasse de support (32) est munie à son extrémité inférieure d'un écran annulaire fixe (46) équipé d'un circuit de refroidissement (48) et définissant une ouverture centrale circulaire; et ledit rotor de suspension (22) est équipé à son extrémité inférieure d'un collet (52) qui est ajusté avec jeu dans ladite ouverture centrale circulaire.14. Device according to any one of claims 1 to 13, characterized in that: said support carcass (32) is provided at its lower end with a fixed annular screen (46) equipped with a cooling circuit (48 ) and defining a circular central opening; and said suspension rotor (22) is equipped at its lower end with a collar (52) which is adjusted with play in said circular central opening.
15. Dispositif selon la revendication 14, caractérisé en ce qu'une conduite d'injection d'un gaz (60) est agencée le long de l'ouverture centrale circulaire de l'écran annulaire fixe (46), de façon à pouvoir injecter un gaz de refroidis- sèment dans un vide (58) dudit collet (52).15. Device according to claim 14, characterized in that a gas injection pipe (60) is arranged along the circular central opening of the fixed annular screen (46), so as to be able to inject a cooling gas in a vacuum (58) of said collar (52).
16. Dispositif selon la revendication 2 et l'une quelconque des revendications 14 et 15, caractérisé en ce que: les deux paliers de suspension (24, 24') de la goulotte (14) sont agencés au- dessus dudit collet (52); ledit collet (52) est muni de deux fentes de passage pour le passage desdits bras de suspension (20, 20') de la goulotte (14); et16. Device according to claim 2 and any one of claims 14 and 15, characterized in that: the two suspension bearings (24, 24 ') of the chute (14) are arranged above said collar (52) ; said collar (52) is provided with two passage slots for the passage of said suspension arms (20, 20 ') of the chute (14); and
Iesdits bras de suspension (20, 20') de la goulotte (14) sont délimités au niveau du passage à travers lesdites fentes par des surfaces cylindriques (62, 64) dont l'axe coïncide avec l'axe de pivotement de la goulotte (14), de façon à ce que Iesdits bras de suspension (20, 20') obturent quasi entièrement lesdites fentes de passage indépendamment de l'angle d'inclinaison de la goulotte (14). Said suspension arms (20, 20 ') of the chute (14) are delimited at the level of the passage through said slots by cylindrical surfaces (62, 64) whose axis coincides with the pivot axis of the chute ( 14), so that said suspension arms (20, 20 ′) close almost entirely said passage slots independently of the angle of inclination of the chute (14).
EP99955851A 1998-10-06 1999-10-05 Device for dispensing bulk materials Expired - Lifetime EP1129221B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
LU90295 1998-10-06
LU90295A LU90295B1 (en) 1998-10-06 1998-10-06 Bulk material distribution device
PCT/EP1999/007354 WO2000020647A1 (en) 1998-10-06 1999-10-05 Device for dispensing bulk materials

Publications (2)

Publication Number Publication Date
EP1129221A1 true EP1129221A1 (en) 2001-09-05
EP1129221B1 EP1129221B1 (en) 2003-03-26

Family

ID=19731772

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Application Number Title Priority Date Filing Date
EP99955851A Expired - Lifetime EP1129221B1 (en) 1998-10-06 1999-10-05 Device for dispensing bulk materials

Country Status (9)

Country Link
US (1) US6390268B1 (en)
EP (1) EP1129221B1 (en)
CN (2) CN1208472C (en)
AT (1) ATE235562T1 (en)
AU (1) AU1264300A (en)
DE (1) DE69906357T2 (en)
LU (1) LU90295B1 (en)
RU (1) RU2228364C2 (en)
WO (1) WO2000020647A1 (en)

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EP2530885A1 (en) 2011-06-01 2012-12-05 Alcatel Lucent Shaping component and method for transporting a data stream offered at different qualities

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LU92494B1 (en) 2014-07-07 2016-01-08 Wurth Paul Sa DEVICE FOR LOCKING THE CHUTE ON THE ENDS OF THE TRUNKS, IN A TANK OVEN LOADING SYSTEM
ITUB20152684A1 (en) 2015-07-30 2017-01-30 Danieli Off Mecc DISTRIBUTION DEVICE FOR LOADING MATERIAL INSIDE A HILLFORLD
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EP2530885A1 (en) 2011-06-01 2012-12-05 Alcatel Lucent Shaping component and method for transporting a data stream offered at different qualities

Also Published As

Publication number Publication date
DE69906357D1 (en) 2003-04-30
EP1129221B1 (en) 2003-03-26
DE69906357T2 (en) 2003-12-11
LU90295B1 (en) 2000-04-07
RU2228364C2 (en) 2004-05-10
CN1208472C (en) 2005-06-29
CN1250104A (en) 2000-04-12
CN1300342C (en) 2007-02-14
US6390268B1 (en) 2002-05-21
AU1264300A (en) 2000-04-26
CN1641050A (en) 2005-07-20
ATE235562T1 (en) 2003-04-15
WO2000020647A1 (en) 2000-04-13

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