EP1401713B1 - System and method for automatically unloading flexible containers and use of said system - Google Patents

System and method for automatically unloading flexible containers and use of said system Download PDF

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Publication number
EP1401713B1
EP1401713B1 EP02755083A EP02755083A EP1401713B1 EP 1401713 B1 EP1401713 B1 EP 1401713B1 EP 02755083 A EP02755083 A EP 02755083A EP 02755083 A EP02755083 A EP 02755083A EP 1401713 B1 EP1401713 B1 EP 1401713B1
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EP
European Patent Office
Prior art keywords
containers
emptying
materials
installation
crusher
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EP02755083A
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German (de)
French (fr)
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EP1401713A1 (en
Inventor
Jérôme AUFFRET
Ludovic Largillet
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ENTPR MODERNE DE TERRASSEMENT
Entreprise Moderne de Terrassement et d'agregats - EMTA
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ENTPR MODERNE DE TERRASSEMENT
Entreprise Moderne de Terrassement et d'agregats - EMTA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B69/00—Unpacking of articles or materials, not otherwise provided for
    • B65B69/0008—Opening and emptying bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B69/00—Unpacking of articles or materials, not otherwise provided for
    • B65B69/0075—Emptying systems for flexible intermediate bulk containers [FIBC]

Definitions

  • the present invention relates to an installation for the automatic deconditioning of individual large flexible containers filled with materials, a method of deconditioning contents, and a use of the installation.
  • These compounds may be in a pulverulent, pasty or monolithic form. These different physical states have significant variations in shear strength used to tear them, for their emptying.
  • the compounds contained in the large bags may also have a very varied chemical compositions, and toxicities for humans, and / or the animal and / or the natural environment higher or lower.
  • the installations known hitherto for unpacking the big bags consist simply in pouring the contents of these bags into a hopper at the bottom of which is disposed a distributor. The latter is overhung by a sharp means intended to disembowel the big bags, which is constituted for example by a fixed steel blade, beveled shape which flares downward.
  • DE 4203495-A1 discloses an installation in which (see column 2, lines 55 and 56) the bags are cut by rotary knives and shaken to be emptied.
  • DE 4305315 discloses an installation in which small paper or plastic bags are cut with their contents and deposited in a thin layer with the latter on a conveyor belt which drives them to other processing stations.
  • Patent document FR 2 533 194 describes an installation whose operation is very similar to that described in patent document EP 0 733 552 A1.
  • Another apparatus for transferring the contents of the big bags as described in US Pat. No. 5,507,602 consists in horizontally arranging a flexible, elastic membrane through which the powdery contents of the big bags flow.
  • the object of the invention is therefore, according to a first of its aspects, an installation intended to automatically and individually decondition large flexible containers filled with materials, and comprising a conveyor belt, means for emptying the containers and sorting means, this characterized in that the emptying means of the containers are constituted by a mill disposed in the hopper and grinding the full containers with their contents, and in that the sorting means are constituted by a disk sorter disposed horizontally below the hopper. mill and separating from their contents the containers reduced to shreds by the mill.
  • the installation empties the containers by proceeding to their grinding at the same time as that of their contents, and takes advantage of the difference in behavior, in a disk sorter, the shreds of containers and crushed materials, to operate in a single step the separation of these flaps and these materials.
  • the installation of the invention thus has the advantage of being able to adapt very easily, on the one hand, to the deconditioning speed of the flexible containers, depending on the consumption or the subsequent reprocessing of their contents, for example in a attached processing facility and secondly, changes in the physical state of their contents within the same container.
  • the installation also makes it possible to process, easily, successively, quickly and without any modification of its means constituting it, flexible containers containing pulverulent materials and then flexible containers containing more or less partially solidified materials, or vice versa, and this without deteriorate the cutting tool or without creating dust or splash in large quantities and / or harmful to the near working environment.
  • a last object of the invention is a use of the installation as defined above to decondition large flexible containers, filled with powdery materials or not.
  • the entire process is carried out under a depression of between about 5 mm and 10 mm of water column, this depression may be constant during the deconditioning period.
  • the mill may comprise a rotor having a rotation speed of between about 60 and 120 rpm.
  • the deconditioning time of the flexible containers can vary from about 1.5 minutes to about 3 minutes.
  • This figure is a schematic representation, in section, of the installation according to the invention.
  • the general reference installation 1 comprises a conveyor belt 2 on which the large containers 3a, 3b, 3c, of about 2 m 3 of volume each, are discharged, coming from a truck 4.
  • the truck 4 can be equipped with a moving floor (not shown) so as to unload automatically and without the use of gripping shovel said flexible containers.
  • the containers 3a, 3b, 3c comprise, respectively, pulverulent residues of household waste incineration fumes (REFIOM), solidified REFIOMs and tixotropic press filter cakes resulting from the physicochemical treatment of acidic residues. from surface treatment.
  • the containers 3a, 3b, 3c are made of polypropylene.
  • the conveyor belt 2 constitutes a buffer storage of the containers 3a, 3b, 3c before their treatment according to the invention.
  • the installation 1 further comprises a freight elevator 5 whose upper part 5a, which is located about 23 meters above the ground, is connected to a hopper 6 of substantially square geometrical base, having a total height of about 3 meters, a total width of about 1.70 meters, and equipped with a damping means (not shown) truck style.
  • the hopper 6 comprises in its middle part a mill 7 consisting of at least one cutting rotor having a rotation speed ranging from 60 to 120 revolutions / min.
  • the rotor When it is brought into contact with the bottom of each container, the rotor rips and grinds them individually and successively due to its rotation, so as to turn them into shreds.
  • each container then flows by gravity onto a horizontally disposed disk sorter 8 and just below the grinder 7.
  • each container flows continuously (powdery state) or discontinuous (monolithic) to sorter 8.
  • the shape geometric disks constituting the sorter 8 can be adapted to the contents of the containers 3a, 3b, 3c.
  • the sorter 8 makes it possible to direct, on the one hand, to a first container 9 the contents of the containers 3a, 3b, 3c, and on the other hand, to a second container 10 the flexible containers converted into rags after passing through the hopper 6
  • the separation of the flaps from the containers and the materials avoids incorporating these flaps into content processing methods subsequently arranged for the installation of the invention.
  • the material stored in the first container 9 is then extracted from the latter with a screw without core (not shown) so as to avoid the formation of jams at the output.
  • the hopper 6 is arranged substantially vertically so as to facilitate the flow of materials. Furthermore, the inner wall of all the elements constituting the hopper 6 is covered with chemical coatings which facilitate the outward flow rate of the materials (such as polyamides of Rilsan type, epoxy, fluorinated polymers). by offering satisfactory erosion resistance and chemical resistance.
  • chemical coatings which facilitate the outward flow rate of the materials (such as polyamides of Rilsan type, epoxy, fluorinated polymers). by offering satisfactory erosion resistance and chemical resistance.
  • the whole of the installation 1 is subjected to a depression of at least 5 mm of water column, so as to to reduce the contamination of the material handling staff.
  • the treatment flow of the plant can reach values of 80 m 3 / hour for flexible containers of approximately 2m 3 .

Abstract

The invention relates to a system and method for unloading flexible containers (3a,3b,3c) containing materials, and to the use thereof. To be precise, the invention comprises a conveyor belt (2), a hopper (6), a crusher (7),and a sorter (8), said elements being depressed while said containers are unloaded (3a,3b,3c). The inventive system is characterized in that the sorter (8) comprises disks which are suited to the nature of the materials contained in the flexible containers (3a,3b,3c).

Description

La présente invention se rapporte à une installation destinée au déconditionnement automatique individuel de gros conteneurs souples remplis de matériaux, à un procédé de déconditionnement de contenus, ainsi qu'à une utilisation de l'installation.The present invention relates to an installation for the automatic deconditioning of individual large flexible containers filled with materials, a method of deconditioning contents, and a use of the installation.

Les gros conteneurs souples, plus connus sous le nom de gros sacs ou « big bags » ayant un poids d'environ 500 kg une fois remplis, ont été créés au départ pour permettre aux agriculteurs de manutentionner, simplement, facilement et en une seule opération, à l'aide de tracteur équipé d'une fourche, de grès grosses quantités de fumier.Large flexible containers, better known as big bags or bags with a weight of about 500 kg when filled, were originally created to allow farmers to handle, simply, easily and in one operation , using a tractor equipped with a fork, sandstone large quantities of manure.

En quelques années, l'utilisation de ces gros sacs s'est plus largement étendue à différents domaines techniques.In just a few years, the use of these big bags has spread more widely to different technical fields.

Ces gros sacs ont notamment été adaptés à leurs autres utilisations avec la variation de leur contenance (de 0,5 à 15 m3), de leur forme géométrique de base (circulaire, carrée), la présence éventuelle de moyens de préhension (poignées), la nature chimique du matériau les constituant (polypropylène) pouvant être plus ou moins perméable aux liquides et/ou gaz que ces sacs contiennent.These big bags were particularly adapted to their other uses with the variation of their capacity (from 0.5 to 15 m 3 ), of their basic geometrical shape (circular, square), the possible presence of means of grip (handles) , the chemical nature of the constituent material (polypropylene) may be more or less permeable to liquids and / or gas that these bags contain.

Aussi, les gros sacs sont couramment utilisés dans de nombreuses branches d'activités économiques, et peuvent ainsi comprendre des composés de nature physico-chimique extrêmement variée.Also, large bags are commonly used in many branches of economic activity, and can include compounds of physicochemical nature extremely varied.

Ces composés peuvent se présenter sous une forme pulvérulente, pâteuse ou encore monolithique. Ces différents états physiques présentent des variations importante de résistance au cisaillement utilisé pour les déchirer, en vue de leur vidange.These compounds may be in a pulverulent, pasty or monolithic form. These different physical states have significant variations in shear strength used to tear them, for their emptying.

Les composés contenus dans les gros sacs peuvent par ailleurs présenter des compositions chimiques très variées, et des toxicités pour l'homme, et/ou l'animal et/ou l'environnement naturel plus ou moins élevées.The compounds contained in the large bags may also have a very varied chemical compositions, and toxicities for humans, and / or the animal and / or the natural environment higher or lower.

Les installations connues jusqu'ici pour déconditionner les gros sacs consistent simplement à déverser le contenu de ces sacs dans une trémie au fond de laquelle est disposé un distributeur. Ce dernier est surplombé d'un moyen tranchant destiné à éventrer le gros sacs, qui est constitué par exemple, d'une lame fixe en acier, de forme biseautée qui s'évase vers le bas.The installations known hitherto for unpacking the big bags consist simply in pouring the contents of these bags into a hopper at the bottom of which is disposed a distributor. The latter is overhung by a sharp means intended to disembowel the big bags, which is constituted for example by a fixed steel blade, beveled shape which flares downward.

Le document de brevet DE 4203495-A1 décrit une installation dans laquelle (cf. colonne 2, lignes 55 et 56) les sacs sont découpés par des couteaux rotatifs et secoués pour être vidés.DE 4203495-A1 discloses an installation in which (see column 2, lines 55 and 56) the bags are cut by rotary knives and shaken to be emptied.

Le brevet US 4,034,877 décrit une installation dans laquelle les sacs sont déchirés en position renversée pour pouvoir être vidés (cf. figures 2, 9 et 12).US Pat. No. 4,034,877 describes an installation in which the bags are torn in the inverted position to be emptied (see FIGS. 2, 9 and 12).

Le document de brevet EP 0 733 552 A1 décrit une installation dans laquelle les sacs pleins sont maintenus en position renversée par un poinçon de faible section pour pouvoir être vidés (cf. figure 8).The patent document EP 0 733 552 A1 describes an installation in which the full bags are held in the inverted position by a punch of small section to be emptied (see Figure 8).

Le brevet DE 4305315 décrit une installation dans laquelle des petits sacs de papier ou de plastique sont découpés avec leur contenu et déposés en mince couche avec ce dernier sur une bande transporteuse qui les entraîne vers d'autres postes de traitement.DE 4305315 discloses an installation in which small paper or plastic bags are cut with their contents and deposited in a thin layer with the latter on a conveyor belt which drives them to other processing stations.

La demande internationale de brevet WO 92/21566 décrit une installation dans laquelle des sacs déposés sur une bande transporteuse sont découpés à leur base pour pouvoir être ultérieurement vidés.International patent application WO 92/21566 describes an installation in which bags deposited on a conveyor belt are cut at their base in order to be subsequently emptied.

Le document de brevet FR 2 533 194 décrit une installation dont le fonctionnement est très voisin de celui décrit dans le document de brevet EP 0 733 552 Al.Patent document FR 2 533 194 describes an installation whose operation is very similar to that described in patent document EP 0 733 552 A1.

D'autres installations connues (DE 4419599 C1) pour vidanger des gros sacs consistent à maintenir le sac immobile, suspendu, puis à le trancher dans sa partie inférieure, pour ensuite recueillir son contenu par le biais de récipient de récupération.Other known installations (DE 4419599 C1) for emptying large bags consist in keeping the bag stationary, suspended, then slicing it in its lower part, and then collecting its contents through a recovery container.

Un autre appareil destiné à transférer le contenu des gros sacs tel que décrit dans US 5,507,602 consiste à disposer horizontalement une membrane souple, élastique au travers de laquelle s'écoule le contenu pulvérulent des gros sacs.Another apparatus for transferring the contents of the big bags as described in US Pat. No. 5,507,602 consists in horizontally arranging a flexible, elastic membrane through which the powdery contents of the big bags flow.

Malheureusement, de tels dispositifs ne permettent pas l'évacuation correcte de contenus monolithiques ou pâteux, ni une protection sanitaire satisfaisante contre la toxicité de matières pulvérulentes présentes dans l'environnement de travail du personnel manutentionnaire.Unfortunately, such devices do not allow the correct evacuation of monolithic or pasty contents, nor satisfactory sanitary protection against the toxicity of pulverulent materials present in the working environment of the material handling personnel.

Aussi, il subsiste un besoin de disposer d'une installation destinée à déconditionner automatiquement, à la chaîne, et individuellement de gros conteneurs (ou sacs) souples, remplis de matériaux, quels que soient leur volume, leur poids ou leur constitution physique, la nature physico-chimique du matériau qu'ils contiennent, tout en ayant un débit horaire de déconditionnement élevé et variable, en pouvant s'adapter très facilement à la nature du sac et/ou de son contenu, et ceci tout en conservant les qualités physico-chimiques du contenu des sacs, et en assurant la sécurité et l'hygiène du personnel de manutention avec un coût financier très faible.Also, there remains a need to have a facility for automatically deconditioning, chain, and individually large containers (or bags) flexible, filled with materials, regardless of their volume, weight or physical constitution, the physico-chemical nature of the material they contain, while having a high and variable deconditioning hourly rate, being able to adapt very easily to the nature of the bag and / or its contents, and this while preserving the physical qualities -chemical contents of the bags, and ensuring the safety and hygiene of handling personnel with a very low financial cost.

L'invention a donc pour objet, selon un premier de ses aspects, une installation destinée à déconditionner automatiquement et individuellement de gros conteneurs souples remplis de matériaux, et comprenant une bande transporteuse, des moyens de vidage des conteneurs et des moyens de tri, cette installation étant caractérisée en ce que les moyens de vidage des conteneurs sont constitués par un broyeur disposé dans la trémie et broyant les conteneurs pleins avec leur contenu, et en ce que les moyens de tri sont constitués par un trieur à disques disposé horizontalement en dessous du broyeur et séparant de leur contenu les conteneurs réduits en lambeaux par le broyeur.The object of the invention is therefore, according to a first of its aspects, an installation intended to automatically and individually decondition large flexible containers filled with materials, and comprising a conveyor belt, means for emptying the containers and sorting means, this characterized in that the emptying means of the containers are constituted by a mill disposed in the hopper and grinding the full containers with their contents, and in that the sorting means are constituted by a disk sorter disposed horizontally below the hopper. mill and separating from their contents the containers reduced to shreds by the mill.

Au lieu de faire appel à des opérations complexes, l'installation vide les conteneurs en procédant à leur broyage en même temps que celui de leur contenu, et tire parti de la différence de comportement, dans un trieur à disques, des lambeaux de conteneurs et des matériaux broyés, pour opérer en une seule étape la séparation de ces lambeaux et de ces matériaux.Instead of resorting to complex operations, the installation empties the containers by proceeding to their grinding at the same time as that of their contents, and takes advantage of the difference in behavior, in a disk sorter, the shreds of containers and crushed materials, to operate in a single step the separation of these flaps and these materials.

L'installation de l'invention présente ainsi l'avantage de pouvoir s'adapter très facilement, d'une part, à la vitesse de déconditionnement des conteneurs souples, en fonction de la consommation ou du retraitement ultérieur de leur contenu, par exemple dans une installation de traitement annexée et d'autre part, aux variations de l'état physique de leur contenu au sein d'un même conteneur. L'installation permet par ailleurs de traiter, aisément, successivement, rapidement et sans aucune modification de ses moyens la constituant, des conteneurs souples contenant des matières pulvérulentes puis des conteneurs souples contenant des matériaux plus ou moins partiellement solidifiés, ou inversement, et ceci sans détériorer l'outil tranchant ou encore sans créer des poussières ou des éclaboussures en quantités importantes et/ou néfastes pour l'environnement de travail proche.The installation of the invention thus has the advantage of being able to adapt very easily, on the one hand, to the deconditioning speed of the flexible containers, depending on the consumption or the subsequent reprocessing of their contents, for example in a attached processing facility and secondly, changes in the physical state of their contents within the same container. The installation also makes it possible to process, easily, successively, quickly and without any modification of its means constituting it, flexible containers containing pulverulent materials and then flexible containers containing more or less partially solidified materials, or vice versa, and this without deteriorate the cutting tool or without creating dust or splash in large quantities and / or harmful to the near working environment.

Enfin, contrairement aux dispositifs connus jusqu'ici, une telle installation de déconditionnement permet le stockage, à moindres coûts, du contenu déjà extrait des conteneurs souples avant leur traitement ultérieur, et ceci sans aucun problème pour l'environnement proche, ni dégradation du contenu au contact de l'oxygène de l'air, de la chaleur solaire, de l'humidité (par exemple pour le plâtre), ou encore du gaz carbonique (par exemple pour la chaux).Finally, unlike the devices known hitherto, such a deconditioning installation allows the storage, at lower cost, of the content already extracted from the flexible containers before their subsequent processing, and this without any problem for the immediate environment, nor degradation of the content in contact with oxygen in the air, solar heat, moisture (eg for plaster), or carbon dioxide (eg for lime).

L'invention a encore pour objet un procédé de déconditionnement automatique et individuel de gros conteneurs souples remplis de matériaux, caractérisé en ce qu'il consiste à :

  • disposer les conteneurs de manière successive sur une bande transporteuse,
  • à acheminer lesdits conteneurs vers une trémie, et
  • à vider les conteneurs des matériaux qu'ils contiennent,
ce procédé étant caractérisé en ce qu'après leur acheminement dans la trémie, les conteneurs pleins sont vidés par broyage avec leur contenu, et en ce que le produit de ce broyage est acheminé par gravité sur un trieur à disques qui sépare les matériaux broyés des conteneurs réduits en lambeaux.The invention further relates to a method of automatic and individual deconditioning of large flexible containers filled with materials, characterized in that it consists of:
  • arranging the containers successively on a conveyor belt,
  • conveying said containers to a hopper, and
  • to empty the containers of the materials they contain,
this method being characterized in that after being conveyed into the hopper, the filled containers are grinded with their contents, and in that the product of this grinding is conveyed by gravity to a disk sorter which separates the crushed materials from the ragged containers.

Enfin, un dernier objet de l'invention est une utilisation de l'installation telle que définie précédemment pour déconditionner de gros conteneurs souples, remplis de matériaux pulvérulents ou non.Finally, a last object of the invention is a use of the installation as defined above to decondition large flexible containers, filled with powdery materials or not.

De préférence, l'ensemble du procédé est réalisé sous une dépression comprise entre environ 5mm et 10mm de colonne d'eau, cette dépression pouvant être constante pendant la durée de déconditionnement.Preferably, the entire process is carried out under a depression of between about 5 mm and 10 mm of water column, this depression may be constant during the deconditioning period.

Le broyeur peut comprendre un rotor ayant une vitesse de rotation comprise entre environ 60 et 120 tours/min.The mill may comprise a rotor having a rotation speed of between about 60 and 120 rpm.

La durée de déconditionnement des conteneurs souples peut varier d'environ 1,5 minutes à environ 3 minutes.The deconditioning time of the flexible containers can vary from about 1.5 minutes to about 3 minutes.

L'invention va maintenant être décrite à l'aide de la figure unique annexée qui ne limite en aucune façon l'objet de l'invention.The invention will now be described with the aid of the single appended figure which in no way limits the object of the invention.

Cette figure est une représentation schématique, en coupe, de l'installation selon l'invention.This figure is a schematic representation, in section, of the installation according to the invention.

L'installation de référence générale 1 comprend une bande transporteuse 2 sur laquelle sont déchargés les gros conteneurs 3a, 3b, 3c, d'environ 2 m3 de volume chacun, provenant d'un camion 4. Le camion 4 peut être équipé d'un fond mouvant (non représenté) de façon à décharger automatiquement et sans l'utilisation de pelle de préhension lesdits conteneurs souples. Dans cet exemple, les conteneurs 3a, 3b, 3c comprennent, respectivement, des résidus pulvérulents de fumées d'incinération d'ordures ménagères (REFIOM), des REFIOM solidifiés et des gâteaux de filtre presse tixotropiques provenant du traitement physico-chimique de résidus acides issus de traitement de surface. Les conteneurs 3a, 3b, 3c sont constitués en polypropylène.The general reference installation 1 comprises a conveyor belt 2 on which the large containers 3a, 3b, 3c, of about 2 m 3 of volume each, are discharged, coming from a truck 4. The truck 4 can be equipped with a moving floor (not shown) so as to unload automatically and without the use of gripping shovel said flexible containers. In this example, the containers 3a, 3b, 3c comprise, respectively, pulverulent residues of household waste incineration fumes (REFIOM), solidified REFIOMs and tixotropic press filter cakes resulting from the physicochemical treatment of acidic residues. from surface treatment. The containers 3a, 3b, 3c are made of polypropylene.

La bande transporteuse 2 constitue un stockage tampon des conteneurs 3a, 3b, 3c avant leur traitement selon l'invention. L'installation 1 comprend de plus un monte-charge 5 dont la partie supérieure 5a, qui est située à environ 23 mètres au-dessus du sol, est connexe à une trémie 6 de base géométrique sensiblement carrée, ayant une hauteur totale d'environ 3 mètres, une largeur totale d'environ 1,70 mètres, et équipée d'un moyen d'amortissement (non représenté) de style camion.The conveyor belt 2 constitutes a buffer storage of the containers 3a, 3b, 3c before their treatment according to the invention. The installation 1 further comprises a freight elevator 5 whose upper part 5a, which is located about 23 meters above the ground, is connected to a hopper 6 of substantially square geometrical base, having a total height of about 3 meters, a total width of about 1.70 meters, and equipped with a damping means (not shown) truck style.

La trémie 6 comprend dans sa partie médiane un broyeur 7 constitué d'au moins un rotor tranchant ayant une vitesse de rotation allant de 60 à 120 tours/min.The hopper 6 comprises in its middle part a mill 7 consisting of at least one cutting rotor having a rotation speed ranging from 60 to 120 revolutions / min.

Lorsqu'il est mis en contact avec le fond de chaque conteneur, le rotor les éventre et les broie individuellement et successivement du fait de sa rotation, de manière à les transformer en lambeaux.When it is brought into contact with the bottom of each container, the rotor rips and grinds them individually and successively due to its rotation, so as to turn them into shreds.

Le contenu de chaque conteneur s'écoule alors par gravité sur un trieur 8 à disques, disposé horizontalement, et juste au-dessous du broyeur 7.The contents of each container then flows by gravity onto a horizontally disposed disk sorter 8 and just below the grinder 7.

En fonction de sa nature physique (monolithique, pulvérulent ou pâteuse avec une concentration en eau libre inférieure à 30%) le contenu de chaque conteneur s'écoule de façon continue (état pulvérulent) ou discontinue (monolithique) vers le trieur 8. La forme géométrique des disques constituant le trieur 8 peut être adaptée au contenu des conteneurs 3a, 3b, 3c.Depending on its physical nature (monolithic, powdery or pasty with a concentration of free water of less than 30%) the contents of each container flows continuously (powdery state) or discontinuous (monolithic) to sorter 8. The shape geometric disks constituting the sorter 8 can be adapted to the contents of the containers 3a, 3b, 3c.

Le trieur 8 permet de diriger, d'une part, vers un premier récipient 9 le contenu des conteneurs 3a, 3b, 3c, et d'autre part, vers un second récipient 10 les conteneurs souples transformés en lambeaux après passage dans la trémie 6. La séparation des lambeaux des conteneurs et, des matériaux, permet d'éviter d'incorporer ces lambeaux dans des procédés de traitement de contenu disposés ultérieurement à l'installation de l'invention.The sorter 8 makes it possible to direct, on the one hand, to a first container 9 the contents of the containers 3a, 3b, 3c, and on the other hand, to a second container 10 the flexible containers converted into rags after passing through the hopper 6 The separation of the flaps from the containers and the materials avoids incorporating these flaps into content processing methods subsequently arranged for the installation of the invention.

Le matériau stocké dans le premier récipient 9 est ensuite extrait de ce dernier à l'aide d'une vis sans âme (non représentée) de façon à éviter la formation de bourrages en sortie.The material stored in the first container 9 is then extracted from the latter with a screw without core (not shown) so as to avoid the formation of jams at the output.

La trémie 6 est disposée sensiblement verticalement de façon à faciliter l'écoulement des matériaux. Par ailleurs, la paroi interne de l'ensemble des éléments constituant la trémie 6 est recouverte de revêtements chimiques qui facilitent la vitesse d'écoulement des matériaux vers l'extérieur (tels que des polyamides de type rilsan, époxy, des polymères fluorés) tout en offrant une résistance à l'érosion et une résistance chimique satisfaisantes.The hopper 6 is arranged substantially vertically so as to facilitate the flow of materials. Furthermore, the inner wall of all the elements constituting the hopper 6 is covered with chemical coatings which facilitate the outward flow rate of the materials (such as polyamides of Rilsan type, epoxy, fluorinated polymers). by offering satisfactory erosion resistance and chemical resistance.

L'ensemble de l'installation 1 est soumis à une dépression d'au moins 5mm de colonne d'eau, de façon à diminuer les contaminations du personnel manutentionnaire.The whole of the installation 1 is subjected to a depression of at least 5 mm of water column, so as to to reduce the contamination of the material handling staff.

Le débit de traitement de l'installation peut atteindre des valeurs de 80 m3/heure pour des conteneurs souples d'environ 2m3.The treatment flow of the plant can reach values of 80 m 3 / hour for flexible containers of approximately 2m 3 .

Claims (10)

  1. Installation intended for automatically and individually emptying large flexible containers (3a, 3b, 3c) filled with materials, comprising a conveyor belt (2), means (7) of emptying the containers and sorting means (8), characterised in that the means of emptying the containers consist of a crusher (7) disposed in the hopper (6) and crushing the full containers with their content, and in that the sorting means consist of a disc sorter (8) disposed horizontally below the crusher and separating from their content the containers reduced to shreds by the crusher.
  2. Installation according to claim 1, characterised in that its elements are, throughout the emptying of the containers (3a, 3b, 3c), subjected to a negative pressure between 5 and 10 mm of water column.
  3. Installation according to claim 1, characterised in that the crusher (7) comprises a rotor having a speed of rotation of between approximately 60 and 120 revolutions/min.
  4. Installation according to claim 1, characterised in that the duration of emptying is between 1.5 minutes and 3 minutes.
  5. Method for the automatic and individual emptying of large flexible containers filled with material, consisting of:
    - disposing the containers (3a, 3b, 3c) successively on a conveyor belt (2),
    - routing the said containers to a hopper (6), and
    - emptying the containers of the materials that they contain,
    characterised in that, after their routing into the hopper, the full containers are emptied by crushing with their content, and in that the crushing product is routed by gravity onto a disc sorter that separates the crushed materials from the containers reduced to shreds.
  6. Method according to claim 5, characterised in that it is carried out as a whole, throughout the emptying of the containers, at a negative pressure of between 5 and 10 mm of water column.
  7. Method according to claim 5, characterised in that the crushing of the containers (3a, 3b, 3c) is carried out by means of a crusher (7) consisting of at least one rotor.
  8. Method according to claim 5, characterised in that the materials, once sorted, are extracted by means of a worm without a core.
  9. Method according to claim 5, characterised in that the emptying period is between approximately 1.5 and 3 minutes.
  10. Use of the installation defined according to one of claims 1 to 4 for emptying large flexible containers filled with materials, powdery or not.
EP02755083A 2001-06-22 2002-06-21 System and method for automatically unloading flexible containers and use of said system Expired - Lifetime EP1401713B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0108273A FR2826339B1 (en) 2001-06-22 2001-06-22 AUTOMATIC UNCONDITIONING SYSTEM FOR FLEXIBLE CONTAINERS-PROCESS-USE
FR0108273 2001-06-22
PCT/FR2002/002168 WO2003000555A1 (en) 2001-06-22 2002-06-21 System and method for automatically unloading flexible containers and use of said system

Publications (2)

Publication Number Publication Date
EP1401713A1 EP1401713A1 (en) 2004-03-31
EP1401713B1 true EP1401713B1 (en) 2006-10-25

Family

ID=8864668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02755083A Expired - Lifetime EP1401713B1 (en) 2001-06-22 2002-06-21 System and method for automatically unloading flexible containers and use of said system

Country Status (5)

Country Link
EP (1) EP1401713B1 (en)
AT (1) ATE343526T1 (en)
DE (1) DE60215650T2 (en)
FR (1) FR2826339B1 (en)
WO (1) WO2003000555A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4034877A (en) * 1975-09-02 1977-07-12 Bel-Tyne Company Limited Apparatus for opening containers
FR2533194B1 (en) * 1982-09-16 1988-03-04 Gazin Patrick DEVICE FOR AUTOMATICALLY EMPTYING IN A SEALED CHAMBER OF BAGS OF POWDERY OR GRANULATED MATERIAL
WO1992021566A1 (en) * 1991-06-07 1992-12-10 George Weston Foods Limited Bread unwrapping apparatus
DE4203495A1 (en) * 1992-02-07 1993-08-12 Buehler Gmbh Discharge mechanism for dust contg.or generating sacks - has dust gas chamber of filter attached to sack emptying chamber by connecting duct
DE4305315C1 (en) * 1993-02-20 1994-10-06 Gaz Industrieanlagen Gmbh Device for the slitting open and emptying of refuse bags made of paper or plastic
DE4419599C1 (en) 1994-06-03 1996-01-25 Schreier Maschinen Und Apparat Device for emptying sacks containing earth
US5507602A (en) 1994-10-14 1996-04-16 J. M. Huber Corporation Powder transfer from supersack containers and dispersion into a homogeneous slurry
JP3302215B2 (en) * 1995-03-23 2002-07-15 ツカサ工業株式会社 Automatic bag opening device

Also Published As

Publication number Publication date
ATE343526T1 (en) 2006-11-15
DE60215650D1 (en) 2006-12-07
DE60215650T2 (en) 2007-02-01
FR2826339A1 (en) 2002-12-27
EP1401713A1 (en) 2004-03-31
FR2826339B1 (en) 2003-12-19
WO2003000555A1 (en) 2003-01-03

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