EP0468853B1 - Press for treating heterogeneous waste materials - Google Patents

Press for treating heterogeneous waste materials Download PDF

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Publication number
EP0468853B1
EP0468853B1 EP91401970A EP91401970A EP0468853B1 EP 0468853 B1 EP0468853 B1 EP 0468853B1 EP 91401970 A EP91401970 A EP 91401970A EP 91401970 A EP91401970 A EP 91401970A EP 0468853 B1 EP0468853 B1 EP 0468853B1
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EP
European Patent Office
Prior art keywords
chamber
solid phase
pressure chamber
press
evacuation
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EP91401970A
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German (de)
French (fr)
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EP0468853A1 (en
Inventor
Jacques Gourdol
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Neyrpic Framatome Mecanique
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Neyrpic Framatome Mecanique
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/04—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams
    • B30B9/06—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams co-operating with permeable casings or strainers
    • B30B9/067—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams co-operating with permeable casings or strainers with a retractable abutment member closing one end of the press chamber

Definitions

  • the present invention relates to a press for treating heterogeneous waste.
  • waste consists of a liquid phase containing only organic products and a solid phase containing metallic, mineral and synthetic materials.
  • One solution consists in pressing this waste which makes it possible, on the one hand, to obtain residues sufficiently dry to constitute a fuel having an acceptable calorific value and, on the other hand, fluid substances which can be used according to their nature, in agriculture as products of 'soil amendment or as a raw material from which chemicals can be extracted.
  • This pressing chamber comprises an inlet port and an outlet port and has a section equal to that of a piston of a first cylinder.
  • the wall of said chamber has a multitude of perforations opening into a channel for discharging the liquid phase extracted by compression of the waste.
  • the outlet orifice of the pressing chamber is generally closed by a plug carried by a rod of a second cylinder opposite the first.
  • the pistons of the two cylinders are movable alternately between, on the one hand, a first position for compressing the waste and for discharging the liquid phase during which the piston of the first cylinder enters the pressing chamber and the piston of the second cylinder closes the outlet orifice of said chamber and, on the other hand, a second position for evacuating the solid phase during which the piston of the first jack continues its stroke and the piston of the second jack releases the outlet of said pressing chamber.
  • the seal is not maintained at the outlet orifice of the pressing chamber by the piston of the second cylinder, so that leaks from liquid occur and enter the solid phase discharge chamber.
  • the closing face of the guillotine element comprises a grid through which the liquid can be extracted during the waste pressing operation.
  • the object of the present invention is to avoid these drawbacks and to propose a press which is simple to produce, while making it possible to obtain dry products having a calorific value markedly greater compared to the products obtained using the presses. used so far.
  • the press shown in Figs. 1 and 2 comprises a frame 1 supporting in particular a receptacle 2 forming a supply zone 3 for heterogeneous waste.
  • the feed zone 3 is open upwards and surmounted by a hopper 4 equipped with at least one gland, not shown, making it possible to introduce the waste into said feed zone 3.
  • This supply zone 3 has two opposite lateral openings 5 and 6 of section adapted to that of a compression piston 7 of a jack 8, for example hydraulic, supported by the frame 1.
  • the piston 7 is movable between the opening 5 and a position located beyond the other opening 6 of the supply zone 3.
  • the opening 6 of the feeding zone 3 opens into a pressing chamber 9 coaxial with this feeding zone 3 and of section equal to that of the piston 7.
  • This pressing chamber 9 has an annular shape and has two lateral openings opposite 10 and 11.
  • the pressing chamber 9 internally comprises a jacket 12 pierced with a multitude of small calibrated passages 12a connecting the interior of said pressing chamber 9 with means for recovering the liquid phase by means of a chute 13 .
  • the pressing chamber 9 communicates through the outlet orifice 11 with a chamber 14 for evacuating the solid phase of the waste.
  • this evacuation chamber 14 is mounted a member movable transversely relative to the axis of the pressing chamber 9.
  • This movable member is constituted by a slide 15 of complementary shape to the evacuation chamber 14.
  • the slide 15 moves under the action of a jack 16, for example hydraulic, between a first position for closing the outlet orifice 11 of the pressing chamber 9 and a second position for opening said orifice 11.
  • a jack 16 for example hydraulic
  • the slide 15 comprises, at the lower part of its faces in contact with the walls of the evacuation chamber 14, knives 18 allowing the walls of said chamber to be cleaned during the movement of said slide.
  • the press includes means 20 for separating the leaks of liquid phase flowing through the outlet orifice 11 of said chamber and the solid phase.
  • These means 20 consist of a box 21, the bottom of which is provided with an orifice 22 and one of the side walls of which has an opening 23.
  • a pivoting flap 24 between a first position communicating the discharge chamber 14 and means, not shown, for recovering liquid phase leaks via the orifice 22 and a second position connecting the evacuation chamber 14 and means, not shown, for recovering the solid phase via the opening 23.
  • the operation of the press described above is as follows:
  • the heterogeneous waste to be treated is introduced into the hopper 4 and pushed into the feed zone 3 for example by a gland not shown.
  • the piston 7 is in the released position as shown in FIGS. 1 and 2.
  • the slide 15 is, under the action of the jack 16, placed in the low position and closes the outlet orifice 11 of the pressing chamber 9 and the flap 24 pivots so as to close the opening 23 and to release the orifice 22 (Fig. 3).
  • the liquid phase is expressed from this raw waste and is evacuated by the chute 13 through the calibrated passages 12a formed in the jacket 12.
  • liquid phase leaks flowing through the outlet orifice 11 into the chamber 14 of evacuation are collected by the box 21 and evacuated by the orifice 22 (Fig. 3).
  • the slide 15 is raised under the action of the jack 16 in order to release the outlet orifice 11 from the pressing chamber 9 and the flap 24 switches so as to close the orifice 22 and to release the opening 23 of the box 21.
  • the slide 15 in its downward movement serves as shears in the event of jamming of the solid parts and ensures the cleaning of the walls of the evacuation chamber 14.
  • the piston 7 When the solid parts have been removed, the piston 7 returns to its initial position for a new operating cycle similar to the previous one.
  • This system has the advantage of being able to overcome the sealing constraints at the level of the obturation of the outlet orifice of the pressing chamber and this thanks to a routing of the dry products outside the zone for recovering liquid phase leaks.
  • this system also has the advantage of avoiding any element to achieve a back pressure when pressing the waste.

Description

La présente invention concerne une presse de traitement de déchets hétérogènes.The present invention relates to a press for treating heterogeneous waste.

Depuis plusieurs années, le volume grandissant des déchets et notamment des ordures ménagères oblige à rechercher des solutions permettant de traiter et de valoriser ces déchets.For several years now, the growing volume of waste and in particular household waste has forced us to seek solutions that make it possible to treat and recycle this waste.

On a déjà penser à utiliser comme combustible de tels déchets, mais la présence dans ceux-ci d'une forte teneur en eau et de produits incombustibles ne permet de produire qu'une énergie trop faible.We have already thought about using such waste as fuel, but the presence in it of a high water content and non-combustible products only allows too low energy to be produced.

En effet, de tels déchets sont constitués par une phase liquide ne contenant que des produits organiques et par une phase solide contenant des matières métalliques, minérales et synthétiques.In fact, such waste consists of a liquid phase containing only organic products and a solid phase containing metallic, mineral and synthetic materials.

Une solution consiste à presser ces déchets ce qui permet d'obtenir, d'une part des résidus suffisamment secs pour constituer un combustible présentant un pouvoir calorifique acceptable et, d'autre part des substances fluides utilisables selon leur nature, en agriculture comme produits d'amendement des sols ou comme matières premières à partir desquelles on peut extraire des produits chimiques.One solution consists in pressing this waste which makes it possible, on the one hand, to obtain residues sufficiently dry to constitute a fuel having an acceptable calorific value and, on the other hand, fluid substances which can be used according to their nature, in agriculture as products of 'soil amendment or as a raw material from which chemicals can be extracted.

On connait déjà des dispositifs permettant de comprimer ces déchets qui sont le plus souvent constitués par des presses hydrauliques comportant une zone d'alimentation recevant les déchets hétérogènes à traiter, une chambre de pressage reliée à des moyens de récupération de la phase liquide et une chambre d'évacuation de la phase solide située en aval de ladite chambre de pressage.Devices are already known for compressing this waste, which most often consists of hydraulic presses comprising a feed zone receiving the heterogeneous waste to be treated, a pressing chamber connected to means for recovering the liquid phase and a chamber. evacuation of the solid phase located downstream of said pressing chamber.

Cette chambre de pressage comprend un orifice d'entrée et un orifice de sortie et possède une section égale à celle d'un piston d'un premier vérin.This pressing chamber comprises an inlet port and an outlet port and has a section equal to that of a piston of a first cylinder.

La paroi de ladite chambre comporte une multitude de perforations débouchant dans un canal d'évacuation de la phase liquide extraite par compression des déchets.The wall of said chamber has a multitude of perforations opening into a channel for discharging the liquid phase extracted by compression of the waste.

L'orifice de sortie de la chambre de pressage est généralement obturée par un bouchon porté par une tige d'un second vérin opposé au premier.The outlet orifice of the pressing chamber is generally closed by a plug carried by a rod of a second cylinder opposite the first.

Les pistons des deux vérins sont mobiles alternativement entre, d'une part, une première position de compression des déchets et d'évacuation de la phase liquide lors de laquelle le piston du premier vérin pénètre dans la chambre de pressage et le piston du second vérin obture l'orifice de sortie de ladite chambre et, d'autre part, une seconde position d'évacuation de la phase solide lors de laquelle le piston du premier vérin continue sa course et le piston du deuxième vérin libère l'orifice de sortie de ladite chambre de pressage.The pistons of the two cylinders are movable alternately between, on the one hand, a first position for compressing the waste and for discharging the liquid phase during which the piston of the first cylinder enters the pressing chamber and the piston of the second cylinder closes the outlet orifice of said chamber and, on the other hand, a second position for evacuating the solid phase during which the piston of the first jack continues its stroke and the piston of the second jack releases the outlet of said pressing chamber.

On connaît également dans le FR-A-2 510 474, une presse de traitement de déchets, comportant :

  • un bâti,
  • une zone d'alimentation recevant les déchets hétérogènes à traiter, ouverte vers le haut et présentant deux ouvertures latérales opposées de section adaptée à celle d'un piston de compression mobile entre l'une des ouvertures de la zone d'alimentation et une position située au-delà de l'autre ouverture de ladite zone d'alimentation,
  • une chambre de pressage comprenant un orifice d'entrée et un orifice de sortie, opposés et disposés coaxialement par rapport à la zone d'alimentation, ladite chambre ayant une section égale à celle du piston de compression et comportant des passages calibrés reliant ladite chambre de pressage à des moyens de récupération de la phase liquide,
  • une chambre d'évacuation de la phase solide située en aval de la chambre de pressage,
  • et un élément à guillotine mobile transversalement par rapport à l'axe de la chambre de pressage entre une première position d'obturation de l'orifice de sortie de ladite chambre de pressage pendant la compression des déchets hétérogènes et une seconde position d'ouverture dudit orifice de sortie pour l'extraction de la phase solide de ladite chambre de pressage.
Also known from FR-A-2 510 474 is a waste treatment press, comprising:
  • a frame,
  • a feed zone receiving the heterogeneous waste to be treated, open upwards and having two opposite lateral openings of section adapted to that of a mobile compression piston between one of the openings of the supply zone and a position located beyond the other opening of said feeding zone,
  • a pressing chamber comprising an inlet and an outlet, opposite and arranged coaxially with respect to the supply zone, said chamber having a section equal to that of the compression piston and comprising calibrated passages connecting said chamber pressing to means for recovering the liquid phase,
  • a solid phase discharge chamber located downstream of the pressing chamber,
  • and a guillotine element movable transversely relative to the axis of the pressing chamber between a first position for closing the outlet orifice of said pressing chamber during the compression of heterogeneous waste and a second position for opening of said outlet orifice for extracting the solid phase from said pressing chamber.

Mais ce type de presses présente des inconvénients et notamment pose des problèmes dûs au maintien de l'étanchéité entre la chambre de pressage et la chambre d'évacuation de la phase solide.However, this type of press has drawbacks and in particular poses problems due to the maintenance of the seal between the pressing chamber and the solid phase discharge chamber.

En effet, compte tenu des pressions importantes engendrés au moment du pressage des déchets, l'étanchéité n'est pas maintenue au niveau de l'orifice de sortie de la chambre de pressage par le piston du second vérin, si bien que des fuites de liquide se produisent et pénètrent dans la chambre d'évacuation de la phase solide.In fact, taking into account the significant pressures generated during the pressing of the waste, the seal is not maintained at the outlet orifice of the pressing chamber by the piston of the second cylinder, so that leaks from liquid occur and enter the solid phase discharge chamber.

Ces fuites ont donc pour effet de remouiller la phase solide au moment de son évacuation ce qui diminue l'intérêt et les avantages d'une telle presse, étant donné que la séparation des phases composant les déchets n'est pas complètement réalisée.These leaks therefore have the effect of rewetting the solid phase at the time of its evacuation, which reduces the interest and the advantages of such a press, since the separation of the phases making up the waste is not completely achieved.

De plus, dans le FR-A-2 510 474, la face de fermeture de l'élément à guillotine comporte une grille à travers laquelle le liquide peut être extrait lors de l'opération de pressage des déchets.In addition, in FR-A-2 510 474, the closing face of the guillotine element comprises a grid through which the liquid can be extracted during the waste pressing operation.

Le but de la présente invention est d'éviter ces inconvénients et de proposer une presse qui soit simple à réaliser, tout en permettant d'obtenir des produits secs présentant un pouvoir calorifique nettement plus accru par rapport aux produits obtenus a l'aide des presses utilisées jusqu'à présent.The object of the present invention is to avoid these drawbacks and to propose a press which is simple to produce, while making it possible to obtain dry products having a calorific value markedly greater compared to the products obtained using the presses. used so far.

L'invention a donc pour objet une presse de traitement de déchets hétérogènes comprenant une phase solide et une phase liquide, ladite presse comportant:

  • un bâti,
  • une zone d'alimentation recevant les déchets hétérogènes à traiter, ouverte vers le haut et présentant deux ouvertures latérales opposées de section adaptée à celle d'un piston de compression mobile entre l'une des ouvertures de la zone d'alimentation et une position au-delà de l'autre ouverture de ladit zone d'alimentation,
  • une chambre de pressage comprenant un orifice d'entrée et un orifice de sortie, opposés et disposés coaxialement par rapport à la zone d'alimentation, ladite chambre ayant une section égale à celle du piston de compression et comportant des passages calibrés reliant ladite chambre de pressage à des moyens de récupération de la phase liquide,
  • une chambre d'évacuation de la phase solide située en aval de la chambre de pressage,
  • un organe de forme complémentaire à la chambre d'évacuation et mobile transversalement par rapport à l'axe de la chambre de pressage entre une première position d'obturation de l'orifice de sortie de ladite chambre de pressage pendant la compression des déchets hétérogènes et une seconde position d'ouverture dudit orifice de sortie pour l'extraction de la phase solide de ladite chambre de pressage, caractérisée en ce qu'elle comporte :
  • des moyens de séparation des fuites de phase liquide et de la phase solide dans la chambre d'évacuation de ladite phase solide.
The subject of the invention is therefore a press for treating heterogeneous waste comprising a solid phase and a liquid phase, said press comprising:
  • a frame,
  • a feed zone receiving the heterogeneous waste to be treated, open upwards and having two opposite lateral openings of section adapted to that of a mobile compression piston between one of the openings of the supply zone and a position at -from the other opening of said supply zone,
  • a pressing chamber comprising an inlet and an outlet, opposite and arranged coaxially with respect to the supply zone, said chamber having a section equal to that of the compression piston and comprising calibrated passages connecting said chamber pressing to means for recovering the liquid phase,
  • a solid phase discharge chamber located downstream of the pressing chamber,
  • a member of complementary shape to the evacuation chamber and movable transversely with respect to the axis of the pressing chamber between a first position for closing the outlet orifice of said pressing chamber during the compression of heterogeneous waste and a second position for opening said outlet orifice for extracting the solid phase from said pressing chamber, characterized in that it comprises:
  • means for separating leaks of liquid phase and of the solid phase in the evacuation chamber of said solid phase.

Selon d'autres caractéristiques :

  • les moyens de séparation sont formés par un volet pivotant,
  • le volet pivotant bascule entre une première position mettant en communication la chambre d'évacuation avec des moyens de récupération des fuites de phase liquide pendant la compression des déchets hétérogènes dans la chambre de presssage et une seconde position mettant en communication la chambre d'évacuation avec des moyens de récupération de la phase solide pendant l'extraction de ladite phase solide de ladite chambre de pressage.
  • l'organe comporte à sa partie inférieure des couteaux de nettoyage des parois de la chambre d'évacuation.
According to other characteristics:
  • the separation means are formed by a pivoting flap,
  • the pivoting flap switches between a first position communicating the evacuation chamber with means for recovering liquid phase leaks during the compression of heterogeneous waste in the pressing chamber and a second position putting the evacuation chamber in communication with means for recovering the solid phase during the extraction of said solid phase from said pressing chamber.
  • the member comprises at its lower part knives for cleaning the walls of the evacuation chamber.

D'autres caractéristiques et avantages de l'invention apparaîtront au cours de la description qui va suivre, faite en se référant aux dessins annexés donnés uniquement à titre d'exemple et sur lesquels :

  • la Fig. 1 est une vue schématique en coupe longitudinale d'une presse réalisée conformément à l'invention,
  • la Fig. 2 est une vue de dessus de la Fig. 1,
  • les Figs. 3 à 5 sont des vues schématiques en coupe montrant les différentes étapes de fonction-nement de la presse selon l'invention.
Other characteristics and advantages of the invention will appear during the description which follows, made with reference to the appended drawings given solely by way of example and in which:
  • Fig. 1 is a schematic view in longitudinal section of a press produced in accordance with the invention,
  • Fig. 2 is a top view of FIG. 1,
  • Figs. 3 to 5 are schematic sectional views showing the different stages of operation of the press according to the invention.

La presse représentée aux Figs. 1 et 2 comporte un bâti 1 supportant notamment un réceptacle 2 formant une zone d'alimentation 3 des déchets hétérogènes.The press shown in Figs. 1 and 2 comprises a frame 1 supporting in particular a receptacle 2 forming a supply zone 3 for heterogeneous waste.

A cet effet, la zone d'alimentation 3 est ouverte vers le haut et surmontée par une trémie 4 équipée d'au moins un fouloir, non représenté, permettant d'introduire les déchets dans ladite zone d'alimentation 3.To this end, the feed zone 3 is open upwards and surmounted by a hopper 4 equipped with at least one gland, not shown, making it possible to introduce the waste into said feed zone 3.

Cette zone d'alimentation 3 présente deux ouvertures latérales opposées 5 et 6 de section adaptée à celle d'un piston de compression 7 d'un vérin 8, par exemple hydraulique, supporté par le bâti 1.This supply zone 3 has two opposite lateral openings 5 and 6 of section adapted to that of a compression piston 7 of a jack 8, for example hydraulic, supported by the frame 1.

Le piston 7 est mobile entre l'ouverture 5 et une position située au-delà de l'autre ouverture 6 de la zone d'alimentation 3.The piston 7 is movable between the opening 5 and a position located beyond the other opening 6 of the supply zone 3.

L'ouverture 6 de la zone d'alimentation 3 débouche dans une chambre de pressage 9 coaxiale à cette zone d'alimentation 3 et de section égale à celle du piston 7. Cette chambre de pressage 9 a une forme annulaire et comporte deux ouvertures latérales opposées 10 et 11.The opening 6 of the feeding zone 3 opens into a pressing chamber 9 coaxial with this feeding zone 3 and of section equal to that of the piston 7. This pressing chamber 9 has an annular shape and has two lateral openings opposite 10 and 11.

La chambre de pressage 9 comporte intérieurement une chemise 12 perçée d'une multitude de petits passages calibrés 12a mettant en communication l'intérieur de ladite chambre de pressage 9 avec des moyens de récupération de la phase liquide par l'intermédiaire d'une goulotte 13.The pressing chamber 9 internally comprises a jacket 12 pierced with a multitude of small calibrated passages 12a connecting the interior of said pressing chamber 9 with means for recovering the liquid phase by means of a chute 13 .

La chambre de pressage 9 communique par l'orifice de sortie 11 avec une chambre 14 d'évacuation de la phase solide des déchets.The pressing chamber 9 communicates through the outlet orifice 11 with a chamber 14 for evacuating the solid phase of the waste.

Dans cette chambre 14 d'évacuation est monté un organe mobile transversalement par rapport à l'axe de la chambre de pressage 9.In this evacuation chamber 14 is mounted a member movable transversely relative to the axis of the pressing chamber 9.

Cet organe mobile est constitué par un coulisseau 15 de forme complémentaire à la chambre 14 d'évacuation.This movable member is constituted by a slide 15 of complementary shape to the evacuation chamber 14.

Le coulisseau 15 se déplace sous l'action d'un vérin 16, par exemple hydraulique, entre une première position d'obturation de l'orifice de sortie 11 de la chambre de pressage 9 et une seconde position d'ouverture dudit orifice 11.The slide 15 moves under the action of a jack 16, for example hydraulic, between a first position for closing the outlet orifice 11 of the pressing chamber 9 and a second position for opening said orifice 11.

Au cours de son déplacement, le coulisseau 15 est guidé par des glissières 17 solidaires du bâti 1.During its movement, the slide 15 is guided by slides 17 secured to the frame 1.

D'autre part, le coulisseau 15 comporte à la partie inférieure de ses faces en contact avec les parois de la chambre 14 d'évacuation, des couteaux 18 permettant le nettoyage des parois de ladite chambre au cours du déplacement dudit coulisseau.On the other hand, the slide 15 comprises, at the lower part of its faces in contact with the walls of the evacuation chamber 14, knives 18 allowing the walls of said chamber to be cleaned during the movement of said slide.

Au-dessous de la chambre 14 d'évacuation, la presse comporte des moyens 20 de séparation des fuites de phase liquide s'écoulant par l'orifice de sortie 11 de ladite chambre et de la phase solide.Below the evacuation chamber 14, the press includes means 20 for separating the leaks of liquid phase flowing through the outlet orifice 11 of said chamber and the solid phase.

Ces moyens 20 sont constitués par un caisson 21 dont le fond est pourvu d'un orifice 22 et dont l'une des parois latérales comporte une ouverture 23.These means 20 consist of a box 21, the bottom of which is provided with an orifice 22 and one of the side walls of which has an opening 23.

Dans cette ouverture 23 est monté un volet 24 pivotant entre une première position mettant en communication la chambre d'évacuation 14 et des moyens, non représentés, de récupération des fuites de phase liquide par l'intermédiaire de l'orifice 22 et une seconde position mettant en communication la chambre d'évacuation 14 et des moyens, non réprésentés, de récupération de la phase solide par l'intermédiaire de l'ouverture 23.In this opening 23 is mounted a pivoting flap 24 between a first position communicating the discharge chamber 14 and means, not shown, for recovering liquid phase leaks via the orifice 22 and a second position connecting the evacuation chamber 14 and means, not shown, for recovering the solid phase via the opening 23.

Le fonctionnement de la presse décrite ci-dessus est le suivant :
   Les déchets hétérogènes à traiter sont introduits dans la trémie 4 et poussés dans la zone d'alimentation 3 par exemple par un fouloir non représenté.The operation of the press described above is as follows:
The heterogeneous waste to be treated is introduced into the hopper 4 and pushed into the feed zone 3 for example by a gland not shown.

Au début du cycle du traitement, de manière à permettre l'introduction des déchets dans la zone d'alimentation 3, le piston 7 est en position dégagée comme représenté sur les Figs. 1 et 2.At the start of the treatment cycle, so as to allow the introduction of the waste into the feed zone 3, the piston 7 is in the released position as shown in FIGS. 1 and 2.

Le coulisseau 15 est, sous l'action du vérin 16, placé en position basse et obture l'orifice de sortie 11 de la chambre de pressage 9 et le volet 24 pivote de façon à obturer l'ouverture 23 et à libérer l'orifice 22 (Fig. 3).The slide 15 is, under the action of the jack 16, placed in the low position and closes the outlet orifice 11 of the pressing chamber 9 and the flap 24 pivots so as to close the opening 23 and to release the orifice 22 (Fig. 3).

Ensuite, le piston 7, commandé par le vérin 8, se déplace vers la chambre de pressage 9 en pousssant les déchets contenus dans la zone d'alimentation 3 vers ladite chambre 9.Then, the piston 7, controlled by the jack 8, moves towards the pressing chamber 9 by pushing the waste contained in the feeding zone 3 towards said chamber 9.

Le piston 7, en poursuivant son avance, pousse les déchets dans la chambre de pressage 9 jusqu'à l'obtention d'une haute pression et les comprime dans celle-ci contre le coulisseau 15.The piston 7, continuing its advance, pushes the waste into the pressing chamber 9 until a high pressure is obtained and compresses it therein against the slide 15.

Lors de la compression des déchets dans la chambre de pressage 9, la phase liquide est exprimée de ces déchets bruts et est évacuée par la goulotte 13 à travers les passages calibrés 12a ménagés dans la chemise 12.During the compression of the waste in the pressing chamber 9, the liquid phase is expressed from this raw waste and is evacuated by the chute 13 through the calibrated passages 12a formed in the jacket 12.

De plus, les fuites de phase liquide s'écoulant par l'orifice de sortie 11 dans la chambre 14 d'évacuation sont recueillies par le caisson 21 et évacuées par l'orifice 22 (Fig. 3).In addition, the liquid phase leaks flowing through the outlet orifice 11 into the chamber 14 of evacuation are collected by the box 21 and evacuated by the orifice 22 (Fig. 3).

Le pressage des déchets étant terminé, le coulisseau 15 est remonté sous l'action du vérin 16 afin de libérer l'orifice de sortie 11 de la chambre de pressage 9 et le volet 24 bascule de façon à obturer l'orifice 22 et à libérer l'ouverture 23 du caisson 21.The pressing of the waste being finished, the slide 15 is raised under the action of the jack 16 in order to release the outlet orifice 11 from the pressing chamber 9 and the flap 24 switches so as to close the orifice 22 and to release the opening 23 of the box 21.

Par avance du piston 7 dans la chambre de pressage 9, les parties solides et sèches des déchets sont sorties de ladite chambre et ensuite, par la descente du coulisseau 15, poussées contre le volet 24 pour être évacuées par l'ouverture 23 (Fig. 4 et 5).In advance of the piston 7 in the pressing chamber 9, the solid and dry parts of the waste are taken out of said chamber and then, by the descent of the slide 15, pushed against the flap 24 to be discharged through the opening 23 (Fig. 4 and 5).

Grâce aux couteaux 18, le coulisseau 15 dans son mouvement de descente sert de cisaille dans l'éventualité d'un coincement des parties solides et assure le nettoyage des parois de la chambre 14 d'évacuation.Thanks to the knives 18, the slide 15 in its downward movement serves as shears in the event of jamming of the solid parts and ensures the cleaning of the walls of the evacuation chamber 14.

Lorsque les parties solides ont été évacuées, le piston 7 revient à sa position initiale pour un nouveau cycle de fonctionnement semblable au précédent.When the solid parts have been removed, the piston 7 returns to its initial position for a new operating cycle similar to the previous one.

Ce système présente l'avantage de pouvoir s'affranchir des contraintes d'étanchéité au niveau de l'obturation de l'orifice de sortie de la chambre de pressage et cela grâce à un acheminement des produits secs en dehors de la zone de récupération des fuites de phase liquide.This system has the advantage of being able to overcome the sealing constraints at the level of the obturation of the outlet orifice of the pressing chamber and this thanks to a routing of the dry products outside the zone for recovering liquid phase leaks.

De plus, ce système présente également l'avantage d'éviter tout élément pour réaliser une contre-pression au moment du pressage des déchets.In addition, this system also has the advantage of avoiding any element to achieve a back pressure when pressing the waste.

Claims (4)

  1. Press for processing heterogeneous waste products composed of a solid phase and a liquid phase, said press comprising:
    - a frame (1);
    - a supply zone (3) to receive the heterogeneous waste products to be processed, which is open at the top and has two opposing lateral openings (5,6) adapted in cross-section to that of a plunger (7), which may be moved between one (5) of the openings of the supply zone (3) and a position located above the other opening (6) of said supply zone;
    - a pressure chamber (9) having an inlet (10) and an outlet (11) arranged opposite one another and disposed coaxially to said supply zone (3), said chamber (9) having a cross-section equal to that of the plunger (7) and containing calibrated passages (12a) connecting said pressure chamber (9) to means (13) for recovering the liquid phase;
    - an evacuation chamber (14) for the solid phase located downstream of said pressure chamber (9);
    - a means (15,16,18), which corresponds in form to said evacuation chamber and may be moved transversely to the axis of said pressure chamber (9) between a first closing position of the outlet (11) of said pressure chamber (9) during compression of the heterogeneous waste products and a second opening position of said outlet (11) for extraction of the solid phase from said pressure chamber (9), characterised in that it comprises means (20) for separation of discharges of the liquid phase and of the solid phase in said evacuation chamber (14) of said solid phase.
  2. Press according to claim 1, characterised in that the separating means (20) are formed by a swivel valve (24).
  3. Press according to claim 2, characterised in that the swivel valve (24) swings between the first position for connection of the evacuation chamber (14) with the means for recovering the discharges of the liquid phase during compression of the heterogeneous waste products in the pressure chamber (9) and a second position for connection of the evacuation chamber with the means for recovering the solid phase during extraction of said solid phase from said pressure chamber (9).
  4. Press according to claim 1, characterised in that the means (15) is provided with blades (18) on its lower section for cleaning the walls of the evacuation chamber (14).
EP91401970A 1990-07-26 1991-07-15 Press for treating heterogeneous waste materials Expired - Lifetime EP0468853B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9009577 1990-07-26
FR9009577A FR2665111A1 (en) 1990-07-26 1990-07-26 PRESS FOR TREATING HETEROGENEOUS WASTE.

Publications (2)

Publication Number Publication Date
EP0468853A1 EP0468853A1 (en) 1992-01-29
EP0468853B1 true EP0468853B1 (en) 1994-10-05

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ID=9399139

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91401970A Expired - Lifetime EP0468853B1 (en) 1990-07-26 1991-07-15 Press for treating heterogeneous waste materials

Country Status (5)

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US (1) US5307739A (en)
EP (1) EP0468853B1 (en)
JP (1) JPH05305496A (en)
DE (1) DE69104437T2 (en)
FR (1) FR2665111A1 (en)

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WO1997018080A1 (en) * 1995-11-14 1997-05-22 Wettlaufer Dale E Method and apparatus for extracting liquid from a liquid-containing slurry
US6874411B2 (en) * 2000-04-28 2005-04-05 Ntn Corporation Recycle of grinding sludge
KR20020010174A (en) * 2000-07-27 2002-02-04 곽성국 Moisture removal device for the food leftovers
US7011017B2 (en) * 2001-03-21 2006-03-14 Koyo Seiko Co., Ltd. Compactor
US6745679B2 (en) * 2001-07-03 2004-06-08 Ntk Corporation Grinding sludge compacting machine
KR101215039B1 (en) * 2005-03-18 2012-12-24 가부시키가이샤 제이텍트 Compression molding machine for metal material briquette, manufacturing apparatus for metal material briquette, and compression molding method for metal material briquette
ES2307384B1 (en) * 2006-05-09 2009-10-13 Santiago Miranda Palomino CONTINUOUS PRESS TEAM OF DISPOSED PRODUCTS WITH WAREHOUSE DEPOSIT AND LIQUID EXTRACTOR SYSTEM.
IT1393200B1 (en) 2009-02-26 2012-04-11 Vm Press Srl MACHINE FOR THE TREATMENT OF ORGANIC FRACTION OF URBAN SOLID WASTE
DE102012017573A1 (en) * 2012-04-30 2013-10-31 Pr-Technik Gmbh Press for briquetting granular material
NL1040442C2 (en) 2013-10-13 2015-04-14 Technologies Holding B V D DEVICE AND METHOD FOR PRESSING ORGANIC MATERIAL FROM WASTE.
WO2017158119A1 (en) * 2016-03-18 2017-09-21 Anaergia B.V. Door for solid waste press

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US1004214A (en) * 1911-02-06 1911-09-26 Joseph Stehlin Hydraulic press.
US1971546A (en) * 1931-06-12 1934-08-28 Henry W Tuttle Apparatus for expressing juice from fruit
US2705916A (en) * 1951-05-31 1955-04-12 Millgard Bror Manne Device for pressing out a fluid from a material in pieces
US2644393A (en) * 1951-11-17 1953-07-07 Brown Citrus Machinery Corp Juice separator
US3980014A (en) * 1974-05-14 1976-09-14 Henry Manufacturing Company Briquetting machine
US4421022A (en) * 1980-03-31 1983-12-20 Burgin Kermit H Apparatus for producing and collecting a liquid extract and a dry by-product from a mash
US4665817A (en) * 1986-05-12 1987-05-19 Simpson Edwin K Apparatus for dewatering a mass of wet fibrous material
FR2615444A1 (en) * 1987-05-22 1988-11-25 Falguieres Hubert Cutter door with vertical sliding for a press for agricultural or similar products

Also Published As

Publication number Publication date
DE69104437T2 (en) 1995-05-24
EP0468853A1 (en) 1992-01-29
JPH05305496A (en) 1993-11-19
FR2665111A1 (en) 1992-01-31
DE69104437D1 (en) 1994-11-10
US5307739A (en) 1994-05-03

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