EP3453772A1 - Centrifuge for separating sugar crystals from massecuite with a flexible wall - Google Patents

Centrifuge for separating sugar crystals from massecuite with a flexible wall Download PDF

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Publication number
EP3453772A1
EP3453772A1 EP18193104.9A EP18193104A EP3453772A1 EP 3453772 A1 EP3453772 A1 EP 3453772A1 EP 18193104 A EP18193104 A EP 18193104A EP 3453772 A1 EP3453772 A1 EP 3453772A1
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EP
European Patent Office
Prior art keywords
centrifuge
drum
centrifugation
flexible
wall
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
EP18193104.9A
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German (de)
French (fr)
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EP3453772B1 (en
Inventor
Jérémy DEFREYNE
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Fives Cail
Fives Cail Babcock SA
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Fives Cail
Fives Cail Babcock SA
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Publication of EP3453772A1 publication Critical patent/EP3453772A1/en
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    • C—CHEMISTRY; METALLURGY
    • C13—SUGAR INDUSTRY
    • C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
    • C13B30/00—Crystallisation; Crystallising apparatus; Separating crystals from mother liquors ; Evaporating or boiling sugar juice
    • C13B30/04—Separating crystals from mother liquor
    • C13B30/06—Separating crystals from mother liquor by centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B3/00—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/02—Casings; Lids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/02—Casings; Lids
    • B04B7/04—Casings facilitating discharge
    • C—CHEMISTRY; METALLURGY
    • C13—SUGAR INDUSTRY
    • C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
    • C13B30/00—Crystallisation; Crystallising apparatus; Separating crystals from mother liquors ; Evaporating or boiling sugar juice
    • C13B30/04—Separating crystals from mother liquor
    • C13B30/08—Washing residual mother liquor from crystals
    • C13B30/10—Washing residual mother liquor from crystals in centrifuges

Definitions

  • the invention relates to a centrifuge for separating the sugar crystals from the massecuite and which can be in continuous operation, according to a first possibility, or alternatively in discontinuous operation, according to a second possibility.
  • the field of the invention is that of the manufacture of sugar and more particularly of industrial equipment to proceed to the spinning step in which the sugar crystals are separated from the cooked mass.
  • the state of the art knows spinners of two types, namely continuous operation according to the first possibility, or discontinuous operation according to the second possibility.
  • a pipe, substantially coaxial and internal to the centrifuge drum allows the continuous feeding of the mass-cooked drum.
  • the drum is fed in a continuous flow rate while the centrifuge drum is rotated at a constant speed.
  • the sugar crystals larger than the openings of the sieve, go up the slope of the drum, while the liquids pass through the sieve and the permeable wall of the drum: the cooked mass is separated into crystals of sugar, on the one hand, which overflow the drum and are collected in the peripheral collection device, and sugary liquids, on the other hand, which pass through the permeable wall of the drum and are collected in the receiving chamber of the collection system.
  • the enclosure of the peripheral collection device for receiving the sugar crystals and the chamber of the collection system for receiving liquids are typically formed by two concentric vessels, enclosing the centrifuge drum, with an inner vessel for receiving liquids, and an outer tank for receiving sugar crystals. These tanks are usually made of metal, typically requiring a boilermaking work.
  • Such a wringer works per cycle.
  • Each spin cycle the drum is loaded with a volume of cooked mass, then the drum is rotated to cause the spin. It follows a step of discharging the drum for which the shutter of the drum is passed in the open position, this unloading step typically taking place while the drum is rotated, thanks to internal spades coming to scrape the drum. crystal layer on the inner side wall of the drum.
  • the system enclosure of the liquid collection system is a vessel enclosing the centrifuge drum requiring a boiler work.
  • the outer tank (or outer chamber) of a centrifuge continuous operation or discontinuous operation requires a large boilermaking work and complicates access during maintenance, the organs of the internal wringer to the tank.
  • the purpose of the present invention is to overcome the aforementioned drawbacks by proposing a continuous operation wringer, or discontinuous operation, optimized manufacturing cost.
  • Another object of the present invention is to provide, at least according to one embodiment, such a wringer whose access for maintenance to the internal organs is facilitated.
  • Another object of the present invention is to provide such a continuously operating wringer whose enclosure of the peripheral collection device for the collection of sugar crystals requires little maintenance, in particular to remove accumulations of crystals on its walls .
  • outer enclosure means the enclosure delimiting the inside of the outside of the centrifuge, more particularly in the present case, this limit is embodied by the flexible wall or walls of the outer enclosure of the centrifuge.
  • the invention relates to a centrifuge 1; 10 for separating the sugar crystals from the cooked mass.
  • a pipe, substantially coaxial and internal to the centrifuge drum allows the continuous feeding of the mass-cooked drum. During the spinning process, feeds in a continuous flow drum mass-fired, and while the centrifuge drum is rotated at a constant speed.
  • the sugar crystals larger than the openings of the sieve, go up the slope of the drum, while the liquids pass through the sieve and the permeable wall of the drum: the cooked mass is separated into crystals of sugar, on the one hand, which overflow from the centrifuge drum and are collected in the peripheral collection device, and sugar liquids, on the other hand, which pass through the permeable wall of the drum and are collected in the receiving chamber of the collection system.
  • the chamber 50 of the peripheral collection device 5 of the continuous centrifuge 1 comprises one or more flexible peripheral walls 6 intended to come into contact with the sugar crystals having overflowed the centrifugation drum, as well as a support frame 7 on which are fixed and stretched the flexible wall or walls 6.
  • the or each flexible wall may for example be a coated fabric which is fixed at its edges to the support frame 7.
  • the support frame 7 preferably comprises a peripheral protective ring 70 extending at the height of the upper edge of the centrifugation drum 2, typically metal.
  • This protective ring 70 is advantageously configured so as to resume projections of centrifuged sugar crystals evacuating from the upper edge of the centrifugation drum during its rotation.
  • the sugar crystals projected at high speed from the drum come into impact with the protective crown, all or part of the flexible wall (s) being fixed (s) at their upper part to said ring 70.
  • the flexible wall (s) 6 are thus protected from the impacts of projected crystals at high speed.
  • the frame may comprise, in addition to the protective ring 70, a base 71, as well as vertical supports 72 such as posts each connecting the base 71 to the protective ring 70.
  • Each flexible wall 6 may be fixed along its upper edge. on the protective ring 70, along its lateral edges, respectively to the two vertical supports, and along its lower edge to the base 71 to cover each opening defined between the ring, the base and two consecutive vertical supports.
  • the continuously operating wringer may comprise means for vibrating the flexible wall 6 or the flexible walls 6, which may comprise a mechanical system 8 configured to transmit the vibrations generated by the centrifugation drum. and / or drive means to the flexible wall or walls 6.
  • the centrifugation drum 2 possibly the other members integral in rotation with the centrifugation drum, or the motorization means are carried by a suspension frame 9 damped relative to base 71 via elastomer blocks 90.
  • said mechanical system may comprise one or more transmission members 80 such as connecting rods joining the suspension frame 9 to the (or) flexible walls 6.
  • transmission members 80 such as connecting rods joining the suspension frame 9 to the (or) flexible walls 6.
  • These organs allow to transmit the vibrations of the frame 9 to the walls flexible 6 forming the enclosure 50 of the collection device.
  • the vibrations of the flexible wall 6 have the function of preventing the accumulation of crystals on the inner surface of the flexible wall, namely a declogging function.
  • said centrifuge is, according to a second possibility, discontinuous operation.
  • Such a wringer operates in cycles. Each spin cycle, the drum is loaded with a volume of cooked mass, then the drum is rotated to cause the spin. It follows a step of discharging the drum for which the shutter of the drum is passed in the open position, this unloading step typically taking place while the drum is rotated, thanks to internal spades coming to scrape the drum. crystal layer on the inner side wall of the drum.
  • the chamber 140 of the liquid collection system 14 having passed through the permeable wall comprises one or more flexible walls 16, peripheral, intended to come into contact with the liquids having passed through the centrifugation drum, as well as a support frame 17 on which are fixed and tensioned or flexible walls 16.
  • the flexible wall or walls may be coated webs.
  • the flexible wall 6 for a continuously operating or discontinuously operating wringer, the flexible wall 6; Or at least one of the flexible walls comprises removable attachment means 60, allowing removal for maintenance access to the internal components.
  • the withdrawal of this flexible wall allows maintenance access to the enclosure 50 of the peripheral collection device of the continuous centrifuge, according to the first possibility, or even access to the internal components to the chamber 140 of the liquid collection system having passed through the permeable wall, according to the second possibility.
  • the removable fastening means 60 may comprise a slide fastener 61, or a self-gripping tape system such as a buckle / hook system.
  • the invention thus makes it possible to construct a centrifuge with continuous operation (or discontinuous operation), at a lower cost, a large part of the metallic material used in the state of the art to produce the outer enclosure being replaced by a or multiple flexible walls stretched and attached to a frame.
  • the lateral surface covered by the flexible wall (s) may thus represent at least 50% of the lateral surface of the external enclosure, or even at least 70% (the enclosure of the peripheral collection device according to the first possibility or enclosure of the system collection of liquids according to the second possibility).
  • the wall or walls Flexible shafts can be advantageously vibrated, preferably by virtue of the vibrations resulting from the rotating members of the centrifuge.
  • the vibration of the flexible walls advantageously ensures automatic unclogging of the flexible walls.

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  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Organic Chemistry (AREA)
  • Centrifugal Separators (AREA)

Abstract

L'invention est relative à un centrifugeuse (1 ; 10) destinée à séparer les cristaux de sucre de la masse cuite, ladite centrifugeuse étant, d'une part, selon une première possibilité, à fonctionnement continu (1), ou selon une deuxième possibilité, à fonctionnement discontinu, et, d'autre part, comprenant : - un tambour de centrifugation (2 ; 12), à paroi perméable, rotatif ; - un système (4 ; 14) de collecte de liquides pour la collecte des liquides ayant traversé la paroi perméable du tambour de centrifugation (2 ; 12) ; caractérisée en ce que la centrifugeuse (1 ;10) comprend une enceinte (50 ; 140) extérieure qui entoure ledit tambour de centrifugation (2 ; 12) et qui comprend une ou plusieurs parois souples (6 ;16) délimitant la centrifugeuse (1 ; 10), ladite enceinte (50;140) comprenant un châssis support (7 ;17) sur lequel sont fixées et tendues la ou les parois souples (6 ; 16).The invention relates to a centrifuge (1; 10) for separating the sugar crystals from the cooked mass, said centrifuge being, on the one hand, according to a first possibility, continuous operation (1), or according to a second possibility, discontinuous operation, and, secondly, comprising: - a centrifugation drum (2; 12), permeable wall, rotating; - a liquid collection system (4; 14) for collecting liquids having passed through the permeable wall of the centrifuge drum (2; 12); characterized in that the centrifuge (1; 10) comprises an outer enclosure (50; 140) which surrounds said centrifuge drum (2; 12) and which comprises one or more flexible walls (6; 16) delimiting the centrifuge (1; 10), said enclosure (50; 140) comprising a support frame (7; 17) on which are fixed and tensioned the flexible wall (6; 16).

Description

L'invention est relative à une centrifugeuse destinée à séparer les cristaux de sucre de la masse-cuite et qui peut être à fonctionnement continu, selon une première possibilité, ou encore à fonctionnement discontinu, selon une seconde possibilité.The invention relates to a centrifuge for separating the sugar crystals from the massecuite and which can be in continuous operation, according to a first possibility, or alternatively in discontinuous operation, according to a second possibility.

Le contenu de la demande de brevet FR1758283, déposée le 8 septembre 2017 , et revendiquée en priorité, est incorporé par référence.The content of the patent application FR1758283, filed on September 8, 2017 , and claimed in priority, is incorporated by reference.

Le domaine de l'invention est celui de la fabrication du sucre et plus particulièrement des équipements industriels pour procéder à l'étape d'essorage dans laquelle on sépare les cristaux de sucre de la masse cuite.The field of the invention is that of the manufacture of sugar and more particularly of industrial equipment to proceed to the spinning step in which the sugar crystals are separated from the cooked mass.

A cet effet, l'état de la technique connaît des essoreuses de deux types, à savoir à fonctionnement continu selon la première possibilité, ou à fonctionnement discontinu selon la seconde possibilité.For this purpose, the state of the art knows spinners of two types, namely continuous operation according to the first possibility, or discontinuous operation according to the second possibility.

Ainsi, l'état de la technique connaît l'essoreuse à fonctionnement continu qui comprend de manière caractéristique :

  • un tambour de centrifugation, à paroi perméable, rotatif et des moyens de motorisation pour entraîner le tambour de centrifugation en rotation, la pente du tambour de centrifugation étant configurée pour assurer, lors de la centrifugation, la remontée des cristaux de sucre et l'évacuation des cristaux de sucre par débordement du tambour de centrifugation,
  • un système de collecte de liquides, comprenant une enceinte de réception entourant le tambour de centrifugation pour la collecte des liquides ayant traversé la paroi perméable du tambour de centrifugation,
  • un dispositif de collecte périphérique comprenant une enceinte convenant pour la collecte des cristaux de sucre débordant du tambour de centrifugation.
Thus, the state of the art knows the continuously operating wringer which typically comprises:
  • a centrifugation drum, permeable wall, rotary and drive means for driving the rotating centrifuge drum, the slope of the centrifuge drum being configured to ensure, during centrifugation, the rise of the sugar crystals and the evacuation sugar crystals by overflow of the centrifuge drum,
  • a liquid collection system comprising a receiving enclosure surrounding the centrifuge drum for collecting liquids having passed through the permeable wall of the centrifuge drum,
  • a peripheral collection device comprising a chamber suitable for collecting sugar crystals overflowing from the centrifugation drum.

Une conduite, sensiblement coaxiale et interne au tambour de centrifugation permet l'alimentation continue du tambour en masse-cuite. Lors du procédé d'essorage, on alimente selon un débit continu le tambour en masse-cuite, et alors que le tambour de centrifugation est entrainé en rotation à vitesse constante.A pipe, substantially coaxial and internal to the centrifuge drum allows the continuous feeding of the mass-cooked drum. During the spinning process, the drum is fed in a continuous flow rate while the centrifuge drum is rotated at a constant speed.

Les cristaux de sucre, de dimension supérieure aux ouvertures du tamis, remontent la pente du tambour, alors que les liquides traversent le tamis et la paroi perméable du tambour : on sépare la masse cuite en des cristaux de sucre, d'une part, qui débordent du tambour et sont collectés dans le dispositif de collecte périphérique, et des liquides sucrés, d'autre part, qui traversent la paroi perméable du tambour et sont collectés dans l'enceinte de réception du système de collecte.The sugar crystals, larger than the openings of the sieve, go up the slope of the drum, while the liquids pass through the sieve and the permeable wall of the drum: the cooked mass is separated into crystals of sugar, on the one hand, which overflow the drum and are collected in the peripheral collection device, and sugary liquids, on the other hand, which pass through the permeable wall of the drum and are collected in the receiving chamber of the collection system.

L'enceinte du dispositif de collecte périphérique destinée pour la réception des cristaux de sucre et l'enceinte du système de collecte destinée pour la réception des liquides sont typiquement formées par deux cuves concentriques, enveloppant le tambour de centrifugation, avec une cuve interne pour la réception des liquides, et une cuve externe pour la réception des cristaux de sucre. Ces cuves sont de manière usuelle réalisées en métal, nécessitant typiquement un ouvrage de chaudronnerie.The enclosure of the peripheral collection device for receiving the sugar crystals and the chamber of the collection system for receiving liquids are typically formed by two concentric vessels, enclosing the centrifuge drum, with an inner vessel for receiving liquids, and an outer tank for receiving sugar crystals. These tanks are usually made of metal, typically requiring a boilermaking work.

L'état de la technique comprend encore l'essoreuse à fonctionnement discontinu qui comprend de manière caractéristique :

  • un tambour de centrifugation, à paroi perméable, rotatif et des moyens de motorisation pour entraîner le tambour de centrifugation en rotation,
  • un système de collecte des liquides, comprenant une enceinte entourant le tambour de centrifugation pour la collecte des liquides ayant traversé la paroi perméable du tambour de centrifugation,
  • un dispositif de décharge comprenant une ouverture sur la paroi de fond du tambour de centrifugation, ainsi qu'un obturateur apte à passer une position d'obturation vers une position d'ouverture autorisant le vidage du contenu du tambour de centrifugation.
The state of the art further comprises the batch-operated wringer which typically comprises:
  • a centrifugation drum, permeable wall, rotary and drive means for driving the rotating centrifuge drum,
  • a liquid collection system comprising a chamber surrounding the centrifuge drum for collecting liquids having passed through the permeable wall of the centrifuge drum,
  • a discharge device comprising an opening on the bottom wall of the centrifuge drum, and a shutter adapted to pass a closed position to an open position allowing the emptying of the contents of the centrifuge drum.

Une telle essoreuse fonctionne par cycle. A chaque cycle d'essorage, on charge le tambour d'un volume de masse cuite, puis on entraine le tambour en rotation afin de provoquer l'essorage. Il s'ensuit une étape de décharge du tambour pour laquelle on passe l'obturateur du tambour en position d'ouverture, cette étape de déchargement s'effectuant typiquement alors que le tambour est animé en rotation, grâce à des bêches internes venant racler la couche de cristaux sur la paroi latérale intérieure du tambour.Such a wringer works per cycle. Each spin cycle, the drum is loaded with a volume of cooked mass, then the drum is rotated to cause the spin. It follows a step of discharging the drum for which the shutter of the drum is passed in the open position, this unloading step typically taking place while the drum is rotated, thanks to internal spades coming to scrape the drum. crystal layer on the inner side wall of the drum.

L'enceinte du système du système de collecte des liquides est une cuve enveloppant le tambour de centrifugation nécessitant un ouvrage de chaudronnerie.The system enclosure of the liquid collection system is a vessel enclosing the centrifuge drum requiring a boiler work.

Selon les constatations de l'inventeur, la cuve extérieure (ou enceinte extérieure) d'une centrifugeuse à fonctionnement continu ou à fonctionnement discontinu nécessite un travail de chaudronnerie important et complique l'accès lors de la maintenance, aux organes de l'essoreuse interne à la cuve.According to the findings of the inventor, the outer tank (or outer chamber) of a centrifuge continuous operation or discontinuous operation requires a large boilermaking work and complicates access during maintenance, the organs of the internal wringer to the tank.

Le but de la présente invention est de pallier les inconvénients précités en proposant une essoreuse à fonctionnement continu, ou à fonctionnement discontinu, de coût de fabrication optimisé.The purpose of the present invention is to overcome the aforementioned drawbacks by proposing a continuous operation wringer, or discontinuous operation, optimized manufacturing cost.

Un autre but de la présente invention est de proposer, au moins selon un mode de réalisation, une telle essoreuse dont l'accès pour maintenance aux organes internes est facilité.Another object of the present invention is to provide, at least according to one embodiment, such a wringer whose access for maintenance to the internal organs is facilitated.

Un autre but de la présente invention est de proposer une telle essoreuse à fonctionnement continu dont l'enceinte du dispositif de collecte périphérique destinée pour la collecte des cristaux de sucre nécessite peu d'entretien, en particulier pour retirer les accumulations de cristaux sur ses parois.Another object of the present invention is to provide such a continuously operating wringer whose enclosure of the peripheral collection device for the collection of sugar crystals requires little maintenance, in particular to remove accumulations of crystals on its walls .

D'autres buts et avantages de la présente invention apparaitront au cours de la description qui va suivre qui n'est donnée qu'à titre indicatif et qui n'a pas pour but de la limiter.Other objects and advantages of the present invention will become apparent from the following description which is given for information only and which is not intended to limit it.

Aussi, l'invention est relative à une centrifugeuse destinée à séparer les cristaux de sucre de la masse cuite, ladite centrifugeuse étant, selon une première possibilité, à fonctionnement continu, ou, selon une deuxième possibilité, à fonctionnement discontinu, ladite centrifugeuse comprenant :

  • un tambour de centrifugation, à paroi perméable, rotatif,
  • un système de collecte de liquides pour la collecte des liquides ayant traversé la paroi perméable du tambour de centrifugation,
caractérisée en ce que la centrifugeuse comprend une enceinte extérieure qui, d'une part, entoure ledit tambour de centrifugation et, d'autre part, qui comprend une ou plusieurs parois souples délimitant la centrifugeuse, ladite enceinte comprenant un châssis support sur lequel sont fixées et tendues la ou les parois souples.Also, the invention relates to a centrifuge for separating the sugar crystals from the cooked mass, said centrifuge being, according to a first possibility, continuous operation, or, according to a second possibility, discontinuous operation, said centrifuge comprising:
  • a centrifugation drum, with a permeable, rotating wall,
  • a liquid collecting system for collecting liquids having passed through the permeable wall of the centrifuge drum,
characterized in that the centrifuge comprises an outer enclosure which, on the one hand, surrounds said centrifugation drum and, on the other hand, which comprises one or more flexible walls delimiting the centrifuge, said enclosure comprising a support frame on which are fixed and stretched the flexible wall or walls.

On notera qu'on entend par « enceinte extérieure », l'enceinte délimitant l'intérieur de l'extérieur de la centrifugeuse, plus particulièrement dans le présent cas, cette limite est matérialisée par la ou les parois souples de l'enceinte extérieure de la centrifugeuse.It will be noted that " outer enclosure " means the enclosure delimiting the inside of the outside of the centrifuge, more particularly in the present case, this limit is embodied by the flexible wall or walls of the outer enclosure of the centrifuge.

Selon la première possibilité, la centrifugeuse à fonctionnement continu comprend :

  • ledit tambour de centrifugation, à paroi perméable, rotatif et des moyens de motorisation pour entraîner le tambour en rotation, la pente du tambour de centrifugation étant configurée pour assurer, lors de la centrifugation, la remontée des cristaux de sucre et l'évacuation des cristaux de sucre par débordement du tambour de centrifugation,
  • ledit système de collecte de liquide, comprenant une enceinte de réception entourant le tambour de centrifugation pour la collecte des liquides ayant traversé la paroi perméable du tambour de centrifugation,
  • un dispositif de collecte périphérique convenant pour la collecte des cristaux de sucre débordant du tambour de centrifugation et dans laquelle l'enceinte du dispositif de collecte périphérique de la centrifugeuse à fonctionnement continu comprend la ou ou lesdites parois périphériques souples , destinée(s) à entrer en contact avec les cristaux sucre ayant débordé du tambour de centrifugation.
According to the first possibility, the continuous operation centrifuge comprises:
  • said centrifugation drum, with a permeable wall, rotating and drive means for driving the drum in rotation, the slope of the centrifugation drum being configured to ensure, during the centrifugation, the rise of the sugar crystals and the removal of the crystals sugar by overflow of the centrifuge drum,
  • said liquid collection system, comprising a receiving enclosure surrounding the centrifuge drum for collecting liquids having passed through the permeable wall of the centrifuge drum,
  • a peripheral collection device suitable for collecting sugar crystals protruding from the centrifuge drum and wherein the enclosure of the peripheral collection device of the continuous centrifuge comprises the or or said flexible peripheral walls, intended (s) to come into contact with the sugar crystals having overflowed the centrifuge drum.

Selon des caractéristiques optionnelles de la centrifugeuse à fonctionnement continu, prises seules ou en combinaison :

  • selon la première possibilité (centrifugeuse à fonctionnement continu), le châssis support comprend une couronne de protection, périphérique s'étendant à hauteur du bord supérieur du tambour de centrifugation, et configurée de manière à reprendre les projections de cristaux de sucre centrifugées s'évacuant du bord supérieur du tambour de centrifugation lors de sa rotation, tout ou partie de la ou les parois souples étant fixée(s) à leur partie supérieure à ladite couronne ;
  • le châssis comprend la couronne de protection, une base, ainsi que des supports verticaux tels que des poteaux reliant chacun la base à la couronne de protection ; chaque paroi souple étant fixée le long de son bord supérieur sur la couronne de protection, le long de ses bords latéraux, respectivement à deux supports verticaux, et le long de son bord inférieur à la base afin de couvrir chaque ouverture définie entre la couronne, la base et deux supports verticaux consécutifs ;
  • la centrifugeuse présente des moyens de mise en vibration de la paroi souple ou les parois souples, comprenant en particulier un système mécanique configuré pour transmettre les vibrations générées par le tambour de centrifugation et/ou des moyens de motorisation à la paroi souple ou les parois souples. Par exemple, le tambour de centrifugation, éventuellement les autres organes solidaires en rotation du tambour de centrifugation, voire les moyens de motorisation peuvent être portés par un châssis de suspension amorti par rapport à la base via des blocs élastomères, ledit système mécanique comprend un ou plusieurs organes de transmission tels que des biellettes reliant le châssis de suspension à la ou les parois souples et configuré(s) de manière à transmettre les vibrations du châssis à la ou les parois souples.
According to optional features of the continuous centrifuge, taken alone or in combination:
  • according to the first possibility (centrifuge with continuous operation), the support frame comprises a peripheral protective ring extending at the height of the upper edge of the centrifugation drum, and configured to take up projections of centrifuged sugar crystals evacuating the upper edge of the centrifugation drum during its rotation, all or part of the flexible wall or walls being fixed (s) at their upper part to said ring;
  • the frame comprises the protective ring, a base, and vertical supports such as poles each connecting the base to the protective ring; each flexible wall being fixed along its upper edge on the protective ring, along its lateral edges, respectively to two vertical supports, and along its lower edge at the base to cover each opening defined between the ring, the base and two consecutive vertical supports;
  • the centrifuge has means for vibrating the flexible wall or the flexible walls, in particular comprising a mechanical system configured to transmit the vibrations generated by the centrifugation drum and / or motorization means to the flexible wall or the flexible walls . For example, the centrifugation drum, possibly the other members integral in rotation with the centrifugation drum, or the motorization means may be carried by a damped suspension frame relative to the base via elastomeric blocks, said mechanical system comprises one or several transmission members such as connecting rods connecting the suspension frame to the flexible wall or walls and configured (s) to transmit the vibration of the frame to the flexible wall or walls.

Selon la deuxième possibilité (centrifugeuse à fonctionnement discontinu), la centrifugeuse comprend :

  • ledit tambour de centrifugation, à paroi perméable, rotatif et des moyens de motorisation pour entraîner le tambour de centrifugation en rotation,
  • un dispositif de décharge comprenant une ouverture sur la paroi de fond du tambour de centrifugation, ainsi qu'un obturateur apte à passer une position d'obturation vers une position d'ouverture autorisant le vidage du contenu du tambour de centrifugation,
  • ledit système de collecte des liquides, comprenant une enceinte entourant le tambour de centrifugation pour la collecte des liquides ayant traversé la paroi perméable du tambour de centrifugation, et dans lequel_l'enceinte du système de collecte comprend la ou les parois souples, périphérique(s), destinée(s) à entrer en contact avec les liquides ayant traversé le tambour de centrifugation.
According to the second possibility (discontinuous centrifuge), the centrifuge comprises:
  • said centrifugation drum, permeable wall, rotary and drive means for driving the rotating centrifuge drum,
  • a discharge device comprising an opening on the bottom wall of the centrifuge drum, and a shutter adapted to pass a closed position to an open position allowing emptying of the contents of the centrifuge drum,
  • said liquid collection system, comprising an enclosure surrounding the centrifuge drum for collecting liquids having passed through the permeable wall of the centrifuge drum, and wherein_the enclosure of the collection system comprises the flexible wall (s), peripheral (s) , intended to come into contact with the liquids having passed through the centrifuge drum.

Selon des caractéristiques optionnelles de la centrifugeuse à fonctionnement continu ou à fonctionnement discontinu, prises seules ou en combinaison :

  • la paroi souple ou l'une au moins des parois souples comprend des moyens de fixation amovibles, autorisant un retrait pour un accès de maintenance aux composants internes à l'enceinte, tels que les composants internes du dispositif de collecte périphérique de la centrifugeuse à fonctionnement continu selon la première possibilité, ou les composants internes à l'enceinte du système de collecte des liquides ayant traversé la paroi perméable selon la seconde possibilité,
  • les moyens de fixation amovibles comprennent une fermeture à glissière, ou encore un système de bande auto-aggripante (tel que Velcro ®).
  • la ou chacune des parois souples est une toile enduite.
According to optional features of the continuous or discontinuous centrifuge, taken alone or in combination:
  • the flexible wall or at least one of the flexible walls comprises removable fixing means, allowing a withdrawal for maintenance access to the internal components of the enclosure, such as the internal components of the peripheral collection device of the operating centrifuge. continuous according to the first possibility, or the components internal to the chamber of the liquid collection system having passed through the permeable wall according to the second possibility,
  • the removable fastening means comprise a zipper, or a self-gripping tape system (such as Velcro ®).
  • the or each of the flexible walls is a coated fabric.

L'invention sera mieux comprise à la lecture de la description suivante accompagnée des dessins en annexe parmi lesquels :

  • La figure 1 est une vue partielle (tambour de centrifugation non illustré) et en perspective d'une centrifugeuse conforme à l'invention selon un premier mode de réalisation, à fonctionnement continu, dont l'enceinte du dispositif de collecte périphérique de la centrifugeuse comprend plusieurs parois souples, périphériques, destinée(s) à entrer en contact avec les cristaux de sucre ayant débordé du tambour ainsi qu'un châssis support sur lequel sont fixées et tendues les parois souples.
  • La figure la est une vue de coupe schématique, illustrant le fonctionnement continu de la centrifugeuse,
  • La figure 1b illustre un exemple de moyens de fixation amovible, en l'espèce une fermeture à glissière utilisée pour fixer une paroi souple à une autre paroi souple,
  • La figure 2 est une vue de l'essoreuse continue selon la figure 1, une fois les parois souples retirées du châssis,
  • La figure 2a est une vue de détail schématique d'un moyen permettant de transmettre les vibrations du châssis de la suspension à l'une des parois souples formant enceinte, assurant une vibration de la paroi souple dans un objectif de décolmatage de paroi,
  • La figure 3 est une vue schématique de coupe d'une centrifugeuse conforme à l'invention selon un second mode de réalisation, à fonctionnement discontinu.
The invention will be better understood on reading the following description accompanied by the appended drawings among which:
  • The figure 1 is a partial view (centrifugation drum not shown) and in perspective of a centrifuge according to the invention according to a first embodiment, continuous operation, the chamber of the peripheral collection device of the centrifuge comprises a plurality of flexible walls , peripheral devices, intended to come into contact with the sugar crystals having overflowed the drum and a support frame on which are fixed and stretched the flexible walls.
  • Figure la is a schematic sectional view illustrating the continuous operation of the centrifuge,
  • The figure 1b illustrates an example of removable fastening means, in this case a zipper used to attach a flexible wall to another flexible wall,
  • The figure 2 is a view of the continuous wringer according to the figure 1 once the flexible walls are removed from the chassis,
  • The figure 2a is a schematic detail view of a means for transmitting vibrations of the chassis of the suspension to one of the flexible walls forming enclosure, ensuring a vibration of the flexible wall in a wall unclogging purpose,
  • The figure 3 is a schematic sectional view of a centrifuge according to the invention according to a second embodiment, discontinuous operation.

Aussi l'invention est relative à une centrifugeuse 1 ; 10 destinée à séparer les cristaux de sucre de la masse cuite.Also the invention relates to a centrifuge 1; 10 for separating the sugar crystals from the cooked mass.

La centrifugeuse peut être à fonctionnement continu selon une première possibilité, ladite centrifugeuse à fonctionnement continu comprenant :

  • un tambour de centrifugation 2, à paroi perméable, rotatif et des moyens de motorisation 3 pour entraîner le tambour de centrifugation en rotation, la pente du tambour de centrifugation étant configurée pour assurer, lors de la centrifugation, la remontée des cristaux de sucre et l'évacuation des cristaux de sucre par débordement du tambour de centrifugation 2,
  • un système 4 de collecte des liquides, comprenant une enceinte de réception entourant le tambour de centrifugation 2 pour la collecte des liquides ayant traversé la paroi perméable du tambour de centrifugation 2,
  • un dispositif 5 de collecte périphérique comprenant une enceinte 50 convenant pour la collecte des cristaux de sucre débordant du tambour de centrifugation.
The centrifuge may be in continuous operation according to a first possibility, said continuous operation centrifuge comprising:
  • a centrifugation drum 2, with a permeable, rotatable wall and motorization means 3 for driving the rotating centrifugation drum, the slope of the centrifugation drum being configured to ensure, during the centrifugation, the rise of the sugar crystals and the evacuation of the sugar crystals by overflow of the centrifugation drum 2,
  • a system 4 for collecting liquids, comprising a reception chamber surrounding the centrifugation drum 2 for collecting liquids having passed through the permeable wall of the centrifugation drum 2,
  • a peripheral collection device 5 comprising an enclosure 50 suitable for collecting sugar crystals protruding from the centrifuge drum.

Une conduite, sensiblement coaxiale et interne au tambour de centrifugation permet l'alimentation continue du tambour en masse-cuite. Lors du procédé d'essorage, on alimente selon un débit continu le tambour en masse-cuite, et alors que le tambour de centrifugation est entrainé en rotation à vitesse constante.A pipe, substantially coaxial and internal to the centrifuge drum allows the continuous feeding of the mass-cooked drum. During the spinning process, feeds in a continuous flow drum mass-fired, and while the centrifuge drum is rotated at a constant speed.

Les cristaux de sucre, de dimensions supérieures aux ouvertures du tamis, remontent la pente du tambour, alors que les liquides traversent le tamis et la paroi perméable du tambour : on sépare la masse cuite en des cristaux de sucre, d'une part, qui débordent du tambour de centrifugation et sont collectés dans le dispositif de collecte périphérique, et des liquides sucrés, d'autre part, qui traversent la paroi perméable du tambour et sont collectés dans l'enceinte de réception du système de collecte.The sugar crystals, larger than the openings of the sieve, go up the slope of the drum, while the liquids pass through the sieve and the permeable wall of the drum: the cooked mass is separated into crystals of sugar, on the one hand, which overflow from the centrifuge drum and are collected in the peripheral collection device, and sugar liquids, on the other hand, which pass through the permeable wall of the drum and are collected in the receiving chamber of the collection system.

Avantageusement, l'enceinte 50 du dispositif 5 de collecte périphérique de la centrifugeuse à fonctionnement continu 1 comprend une ou plusieurs parois souples 6 périphériques, destinée(s) à entrer en contact avec les cristaux de sucre ayant débordé du tambour de centrifugation, ainsi qu'un châssis support 7 sur lequel sont fixées et tendues la ou les parois souples 6.Advantageously, the chamber 50 of the peripheral collection device 5 of the continuous centrifuge 1 comprises one or more flexible peripheral walls 6 intended to come into contact with the sugar crystals having overflowed the centrifugation drum, as well as a support frame 7 on which are fixed and stretched the flexible wall or walls 6.

Il est ainsi possible de diminuer sensiblement le coût de la fabrication du dispositif de collecte périphérique des cristaux de sucre, et par comparaison à une cuve selon l'état de la technique, résultant d'un ouvrage de chaudronnerie. La ou chaque paroi souple peut par exemple être une toile enduite qui est fixée par ses bords au châssis support 7.It is thus possible to significantly reduce the cost of manufacturing the device for collecting peripheral sugar crystals, and compared to a tank according to the state of the art, resulting from a boiler work. The or each flexible wall may for example be a coated fabric which is fixed at its edges to the support frame 7.

Comme illustré à titre d'exemple non limitatif aux figures 1 et 2, le châssis support 7 comprend de préférence une couronne de protection 70, périphérique s'étendant à hauteur du bord supérieur du tambour de centrifugation 2, typiquement métallique.As illustrated by way of non-limiting example figures 1 and 2 , the support frame 7 preferably comprises a peripheral protective ring 70 extending at the height of the upper edge of the centrifugation drum 2, typically metal.

Cette couronne de protection 70 est avantageusement configurée de manière à reprendre les projections de cristaux de sucre centrifugées s'évacuant du bord supérieur du tambour de centrifugation lors de sa rotation. Les cristaux de sucre projetés à haute vitesse du tambour entrent en impact avec la couronne de protection, tout ou partie de la ou les parois souples étant fixée(s) à leur partie supérieure à ladite couronne 70. La ou les parois souples 6 sont ainsi protégées des impacts des cristaux projetés à haute vitesse.This protective ring 70 is advantageously configured so as to resume projections of centrifuged sugar crystals evacuating from the upper edge of the centrifugation drum during its rotation. The sugar crystals projected at high speed from the drum come into impact with the protective crown, all or part of the flexible wall (s) being fixed (s) at their upper part to said ring 70. The flexible wall (s) 6 are thus protected from the impacts of projected crystals at high speed.

Le châssis peut comprendre outre la couronne de protection 70, une base 71, ainsi que des supports verticaux 72 tels que des poteaux reliant chacun la base 71 à la couronne de protection 70. Chaque paroi souple 6 peut être fixée le long de son bord supérieur sur la couronne de protection 70, le long de ses bords latéraux, respectivement aux deux supports verticaux, et le long de son bord inférieur à la base 71 afin de couvrir chaque ouverture définie entre la couronne, la base et deux supports verticaux consécutifs.The frame may comprise, in addition to the protective ring 70, a base 71, as well as vertical supports 72 such as posts each connecting the base 71 to the protective ring 70. Each flexible wall 6 may be fixed along its upper edge. on the protective ring 70, along its lateral edges, respectively to the two vertical supports, and along its lower edge to the base 71 to cover each opening defined between the ring, the base and two consecutive vertical supports.

Selon un mode de réalisation avantageux, l'essoreuse à fonctionnement continu peut comprendre des moyens de mise en vibration de la paroi souple 6 ou des parois souples 6, qui peuvent comprendre un système mécanique 8 configuré pour transmettre les vibrations générées par le tambour de centrifugation et/ou des moyens de motorisation à la ou les parois souples 6.According to an advantageous embodiment, the continuously operating wringer may comprise means for vibrating the flexible wall 6 or the flexible walls 6, which may comprise a mechanical system 8 configured to transmit the vibrations generated by the centrifugation drum. and / or drive means to the flexible wall or walls 6.

Par exemple, et selon le mode de réalisation illustré, le tambour de centrifugation 2, éventuellement les autres organes solidaires en rotation du tambour de centrifugation, voire les moyens de motorisation sont portés par un châssis de suspension 9 amorti par rapport à base 71 via des blocs élastomères 90.For example, and according to the illustrated embodiment, the centrifugation drum 2, possibly the other members integral in rotation with the centrifugation drum, or the motorization means are carried by a suspension frame 9 damped relative to base 71 via elastomer blocks 90.

Ce châssis de suspension 9 est ainsi amené à osciller par rapport à la base 71 sous l'effet de la rotation du tambour de centrifugation et autres organes tournants. Selon ce mode de réalisation, ledit système mécanique peut comprendre un ou plusieurs organes de transmission 80 tels que des biellettes joignant le châssis de suspension 9 à la (ou les) parois souples 6. Ces organes permettent de transmettre les vibrations du châssis 9 aux parois souples 6 formant l'enceinte 50 du dispositif de collecte. Comme illustré à la figure 2a, les vibrations de la paroi souple 6 ont pour fonction d'éviter l'accumulation de cristaux sur la surface interne de la paroi souple, à savoir une fonction de décolmatage.This suspension frame 9 is thus caused to oscillate relative to the base 71 under the effect of the rotation of the centrifuge drum and other rotating members. According to this embodiment, said mechanical system may comprise one or more transmission members 80 such as connecting rods joining the suspension frame 9 to the (or) flexible walls 6. These organs allow to transmit the vibrations of the frame 9 to the walls flexible 6 forming the enclosure 50 of the collection device. As illustrated in figure 2a , the vibrations of the flexible wall 6 have the function of preventing the accumulation of crystals on the inner surface of the flexible wall, namely a declogging function.

Selon un autre mode de réalisation, ladite centrifugeuse est, selon une seconde possibilité, à fonctionnement discontinu.According to another embodiment, said centrifuge is, according to a second possibility, discontinuous operation.

Cette centrifugeuse à fonctionnement discontinu 10 comprend :

  • un tambour de centrifugation 12, à paroi perméable, rotatif et des moyens de motorisation 13 pour entraîner le tambour de centrifugation en rotation,
  • un système 14 de collecte des liquides, comprenant une enceinte 140 entourant le tambour de centrifugation pour la collecte des liquides ayant traversé la paroi perméable du tambour de centrifugation,
  • un dispositif de décharge comprenant une ouverture sur la paroi de fond du tambour de centrifugation, ainsi qu'un obturateur 15 apte à passer une position d'obturation vers une position d'ouverture autorisant le vidage du contenu du tambour de centrifugation.
This discontinuous centrifuge 10 comprises:
  • a centrifugation drum 12, with a permeable wall, rotating and motorization means 13 for driving the rotating centrifugation drum,
  • a system 14 for collecting liquids, comprising a chamber 140 surrounding the centrifugation drum for collecting liquids having passed through the permeable wall of the centrifuge drum,
  • a discharge device comprising an opening on the bottom wall of the centrifuge drum, and a shutter 15 adapted to pass a closed position to an open position allowing the emptying of the contents of the centrifuge drum.

Une telle essoreuse fonctionne par cycles. A chaque cycle d'essorage, on charge le tambour d'un volume de masse cuite, puis on entraine le tambour en rotation afin de provoquer l'essorage. Il s'ensuit une étape de décharge du tambour pour laquelle on passe l'obturateur du tambour en position d'ouverture, cette étape de déchargement s'effectuant typiquement alors que le tambour est animé en rotation, grâce à des bêches internes venant racler la couche de cristaux sur la paroi latérale intérieure du tambour.Such a wringer operates in cycles. Each spin cycle, the drum is loaded with a volume of cooked mass, then the drum is rotated to cause the spin. It follows a step of discharging the drum for which the shutter of the drum is passed in the open position, this unloading step typically taking place while the drum is rotated, thanks to internal spades coming to scrape the drum. crystal layer on the inner side wall of the drum.

Selon l'invention, l'enceinte 140 du système de collecte 14 des liquides ayant traversé la paroi perméable comprend une ou plusieurs parois souples 16, périphériques, destinée(s) à entrer en contact avec les liquides ayant traversé le tambour de centrifugation, ainsi qu'un châssis support 17 sur lequel sont fixées et tendues la ou les parois souples 16. La ou les parois souples peuvent être des toiles enduites.According to the invention, the chamber 140 of the liquid collection system 14 having passed through the permeable wall comprises one or more flexible walls 16, peripheral, intended to come into contact with the liquids having passed through the centrifugation drum, as well as a support frame 17 on which are fixed and tensioned or flexible walls 16. The flexible wall or walls may be coated webs.

Selon un mode de réalisation, pour une essoreuse à fonctionnement continu ou encore à fonctionnement discontinu, la paroi souple 6 ; 16 ou l'une au moins des parois souples comprend des moyens de fixation amovibles 60, autorisant un retrait pour un accès de maintenance aux composants internes.According to one embodiment, for a continuously operating or discontinuously operating wringer, the flexible wall 6; Or at least one of the flexible walls comprises removable attachment means 60, allowing removal for maintenance access to the internal components.

Le retrait de cette paroi souple permet un accès de maintenance à l'enceinte 50 du dispositif de collecte périphérique de la centrifugeuse à fonctionnement continu, selon la première possibilité, ou encore un accès aux composants internes à l'enceinte 140 du système de collecte des liquides ayant traversé la paroi perméable, selon la seconde possibilité. Les moyens de fixation amovible 60 peuvent comprendre une fermeture à glissière 61, ou encore un système de bande auto-agrippant tel qu'un système boucle/crochet.The withdrawal of this flexible wall allows maintenance access to the enclosure 50 of the peripheral collection device of the continuous centrifuge, according to the first possibility, or even access to the internal components to the chamber 140 of the liquid collection system having passed through the permeable wall, according to the second possibility. The removable fastening means 60 may comprise a slide fastener 61, or a self-gripping tape system such as a buckle / hook system.

Avantages :Advantages :

L'invention permet ainsi la construction d'une centrifugeuse à fonctionnement continu (ou à fonctionnement discontinu), à moindre coût, une partie importante de la matière métallique utilisée dans l'état de la technique pour réaliser l'enceinte extérieure étant remplacée par une ou plusieurs parois souples tendues et fixées sur un châssis.The invention thus makes it possible to construct a centrifuge with continuous operation (or discontinuous operation), at a lower cost, a large part of the metallic material used in the state of the art to produce the outer enclosure being replaced by a or multiple flexible walls stretched and attached to a frame.

La surface latérale couverte par la ou les parois souples peut ainsi représenter au moins 50% de la surface latérale de l'enceinte extérieur, voire même au moins 70 % (l'enceinte du dispositif de collecte périphérique selon la première possibilité ou enceinte du système de collecte des liquides selon la seconde possibilité).The lateral surface covered by the flexible wall (s) may thus represent at least 50% of the lateral surface of the external enclosure, or even at least 70% (the enclosure of the peripheral collection device according to the first possibility or enclosure of the system collection of liquids according to the second possibility).

Tout ou partie de ces parois souples peuvent être de préférence retirées aisément, grâce à des moyens de fixation amovibles, permettant de libérer un accès aisé aux composants internes à l'enceinte : on simplifie l'accès à la maintenance.All or part of these flexible walls can preferably be removed easily, thanks to removable fastening means, to release easy access to internal components to the enclosure: it simplifies access to maintenance.

Dans le cas d'une essoreuse à fonctionnement continu pour laquelle l'enceinte du dispositif de collecte périphérique est destinée à la collecte des cristaux de sucre, avec risque d'accumulation de cristaux sur la surface interne de ses parois souples, la ou les parois souples peuvent être avantageusement mises en vibration, de préférence grâce aux vibrations résultant des organes tournants de la centrifugeuse. La vibration des parois souples assure avantageusement un décolmatage automatique des parois souples.In the case of a continuously operating wringer for which the enclosure of the peripheral collection device is intended for the collection of sugar crystals, with the risk of accumulation of crystals on the inner surface of its flexible walls, the wall or walls Flexible shafts can be advantageously vibrated, preferably by virtue of the vibrations resulting from the rotating members of the centrifuge. The vibration of the flexible walls advantageously ensures automatic unclogging of the flexible walls.

NOMENCLATURENOMENCLATURE Mode de réalisation des figures 1, la, lb, 2 et 2a (Centrifugeuse à fonctionnement continu) :Embodiment of Figures 1, 1a, 1b, 2 and 2a (Continuous Centrifuge):

  • 1. Centrifugeuse à fonctionnement continu,1. Continuous operation centrifuge,
  • 2. Tambour de centrifugation,2. Centrifugal drum,
  • 3. Moyens de motorisation,3. Motorization means,
  • 4. Système de collecte des liquides ayant traversé la paroi perméable du tambour de centrifugation,4. System for collecting liquids having passed through the permeable wall of the centrifugation drum,
  • 5. Dispositif de collecte périphérique des cristaux du sucre ayant débordé du tambour de centrifugation.5. Peripheral collection device of sugar crystals having overflowed the centrifugation drum.
  • 50. Enceinte (Dispositif 5),50. Enclosure (Device 5),
  • 6. Paroi périphériques souples,6. Flexible peripheral walls,
  • 60. Moyens de fixation amovible,60. Removable means of attachment,
  • 61. Fermeture à glissière,61. Zipper,
  • 7. Châssis support sur lequel sont fixées les parois souples,7. Support frame on which the flexible walls are fixed,
  • 70. Couronne de protection,70. Protection crown,
  • 71. Base,71. Base,
  • 72. Supports verticaux reliant la base à la couronne de protection,72. Vertical supports connecting the base to the protective crown,
  • 8. Système mécanique configuré pour transmettre les vibrations à la paroi souple,8. Mechanical system configured to transmit vibrations to the flexible wall,
  • 80. Biellette (Système mécanique),80. Rod (mechanical system),
  • 9. Châssis de suspension,9. Suspension chassis,
  • 90. Blocs élastomères,90. Elastomer blocks,
Mode de réalisation de la figure 3 (Centrifugeuse à fonctionnement discontinu) :Embodiment of Figure 3 (Discontinuous Centrifuge):

  • 10. Centrifugeuse à fonctionnement discontinu,10. Discontinuous centrifuge,
  • 12. Tambour de centrifugation,12. Centrifugal drum,
  • 13. Moyens de motorisation,13. Motorization means,
  • 14. Système de collecte des liquides,14. Liquid Collection System,
  • 140. Enceinte du système de collecte des liquides,140. Enclosure of liquid collection system,
  • 15. Obturateur15. Shutter
  • 16. Paroi périphérique souple.16. Flexible peripheral wall.
  • 17. Châssis support sur lequel sont fixées les parois souples.17. Support frame on which the flexible walls are fixed.

Claims (11)

Centrifugeuse (1 ; 10) destinée à séparer les cristaux de sucre de la masse cuite, ladite centrifugeuse (1 ; 10) étant, selon une première possibilité, à fonctionnement continu (1), ou, selon une deuxième possibilité, à fonctionnement discontinu, ladite centrifugeuse (1 ; 10) comprenant : - un tambour de centrifugation (2 ; 12), à paroi perméable, rotatif ; - un système (4 ; 14) de collecte de liquides pour la collecte des liquides ayant traversé la paroi perméable du tambour de centrifugation (2 ; 12) ; caractérisée en ce que la centrifugeuse (1 ;10) comprend une enceinte (50 ; 140) extérieure qui, d'une part, entoure ledit tambour de centrifugation (2 ; 12) et qui, d'autre part, comprend une ou plusieurs parois souples (6 ;16) délimitant la centrifugeuse (1 ; 10), ladite enceinte (50 ; 140) comprenant un châssis support (7 ;17) sur lequel sont fixées et tendues la ou les parois souples (6 ; 16).Centrifuge (1; 10) for separating the sugar crystals from the cooked mass, said centrifuge (1; 10) being, according to a first possibility, continuous operation (1), or, according to a second possibility, discontinuous operation, said centrifuge (1; 10) comprising: - a centrifugation drum (2; 12), permeable wall, rotating; - a liquid collection system (4; 14) for collecting liquids having passed through the permeable wall of the centrifuge drum (2; 12); characterized in that the centrifuge (1; 10) comprises an outer enclosure (50; 140) which on the one hand surrounds said centrifuge drum (2; 12) and which on the other hand comprises one or more walls flexible (6; 16) defining the centrifuge (1; 10), said enclosure (50; 140) comprising a support frame (7; 17) on which are fixed and tensioned or flexible walls (6; 16). Centrifugeuse à fonctionnement discontinu (10) selon la revendication 1, comprenant : - ledit tambour de centrifugation (12), à paroi perméable, rotatif et des moyens de motorisation (13) pour entraîner le tambour de centrifugation en rotation, - un dispositif de décharge comprenant une ouverture sur la paroi de fond du tambour de centrifugation, ainsi qu'un obturateur (15) apte à passer une position d'obturation vers une position d'ouverture autorisant le vidage du contenu du tambour de centrifugation, - le système (14) de collecte des liquides, comprenant ladite enceinte (140) entourant le tambour de centrifugation (12) pour la collecte des liquides ayant traversé la paroi perméable du tambour de centrifugation, et dans lequel l'enceinte (140) du système de collecte (14) comprend la ou les parois souples (16), périphérique(s), destinée(s) à entrer en contact avec les liquides ayant traversé le tambour de centrifugation (12). A batch centrifuge (10) according to claim 1, comprising: - said centrifugation drum (12), permeable wall, rotary and drive means (13) for driving the rotating centrifuge drum, - A discharge device comprising an opening on the bottom wall of the centrifuge drum, and a shutter (15) adapted to pass a closed position to an open position allowing the emptying of the contents of the centrifuge drum, the liquid collection system (14) comprising said enclosure (140) surrounding the centrifuge drum (12) for collecting liquids having passed through the permeable wall of the centrifuge drum, and wherein the chamber (140) of the collection system (14) comprises the flexible wall (16) or periphery (s) intended to come into contact with the liquids which have passed through the centrifugation drum (12). Centrifugeuse à fonctionnement continu (1) selon la revendication 1, comprenant : - ledit tambour de centrifugation (2), à paroi perméable, rotatif et des moyens de motorisation (3) pour entraîner le tambour en rotation, la pente du tambour de centrifugation étant configurée pour assurer, lors de la centrifugation, la remontée des cristaux de sucre et l'évacuation des cristaux de sucre par débordement du tambour de centrifugation, - ledit système (4) de collecte de liquide, comprenant une enceinte de réception entourant le tambour de centrifugation (2) pour la collecte des liquides ayant traversé la paroi perméable du tambour de centrifugation (2), - un dispositif (5) de collecte périphérique convenant pour la collecte des cristaux de sucre débordant du tambour de centrifugation et comprenant ladite enceinte (50) du dispositif de collecte périphérique de la centrifugeuse à fonctionnement continu qui comprend la ou lesdites parois périphériques souples (6), destinée(s) à entrer en contact avec les cristaux sucre ayant débordé du tambour de centrifugation. A continuous-operation centrifuge (1) according to claim 1, comprising: - said centrifugation drum (2), permeable wall, rotary and drive means (3) for driving the drum in rotation, the slope of the centrifuge drum being configured to ensure, during centrifugation, the recovery of the crystals of sugar and evacuation of sugar crystals by overflow of the centrifuge drum, said liquid collecting system (4) comprising a receiving enclosure surrounding the centrifugation drum (2) for collecting liquids having passed through the permeable wall of the centrifuge drum (2), a peripheral collection device (5) suitable for collecting the sugar crystals overflowing from the centrifugation drum and comprising said enclosure (50) of the continuous centrifuge peripheral collection device which comprises the at least one flexible peripheral wall (6); ), intended to come into contact with the sugar crystals having overflowed the centrifuge drum. Centrifugeuse à fonctionnement continu selon la revendication 3 dans lequel le châssis support (7) comprend une couronne de protection (70), périphérique s'étendant à hauteur du bord supérieur du tambour de centrifugation (2), et configurée de manière à reprendre les projections de cristaux de sucre centrifugées s'évacuant du bord supérieur du tambour de centrifugation lors de sa rotation, tout ou partie de la ou les parois souples étant fixée(s) à leur partie supérieure à ladite couronne (70).Continuous-operation centrifuge according to claim 3, wherein the support frame (7) comprises a circumferential protective ring (70) extending up to the upper edge of the centrifuge drum (2) and configured to take up the projections centrifuged sugar crystals evacuating from the upper edge of the centrifugation drum during its rotation, all or part of the flexible wall or walls being fixed (s) at their upper part to said ring (70). Centrifugeuse à fonctionnement continu selon la revendication 4, dans laquelle le châssis comprenant, outre la couronne de protection (70), une base (71), ainsi que des supports verticaux (72) tels que des poteaux reliant chacun la base (71) à la couronne de protection (70), chaque paroi souple (6) étant fixée le long de son bord supérieur sur la couronne de protection (70), le long de ses bords latéraux, respectivement à deux supports verticaux (72), et le long de son bord inférieur à la base (71) afin de couvrir chaque ouverture définie entre la couronne, la base et deux supports verticaux consécutifs.A continuous-operation centrifuge according to claim 4, wherein the frame comprises, in addition to the protective ring (70), a base (71), as well as vertical supports (72) such as posts each connecting the base (71) to the protective ring (70), each flexible wall (6) being fixed along its upper edge on the protective ring (70), along its lateral edges, respectively to two vertical supports (72), and along from its lower edge to the base (71) to cover each opening defined between the crown, the base and two consecutive vertical supports. Centrifugeuse selon l'une des revendications 1 à 5, présentant des moyens de mise en vibration de la paroi souple (6) ou des parois souples (6).Centrifuge according to one of claims 1 to 5, having means for vibrating the flexible wall (6) or the flexible walls (6). Centrifugeuse selon la revendication 6, dans laquelle les moyens de mise en vibration de la ou les parois souples (6) comprennent un système mécanique (8) configuré pour transmettre les vibrations générées par le tambour de centrifugation et/ou des moyens de motorisation à la paroi ou les parois souples (6).Centrifuge according to claim 6, wherein the means for vibrating the flexible wall or walls (6) comprise a mechanical system (8) configured to transmit the vibrations generated by the centrifugation drum and / or motorization means to the wall or flexible walls (6). Centrifugeuse à fonctionnement continu selon les revendications 4 et 7, dans laquelle le tambour de centrifugation, éventuellement les autres organes solidaires en rotation du tambour de centrifugation, voire les moyens de motorisation étant portés par un châssis de suspension (9) amorti par rapport à la base (71) via des blocs élastomères (90), ledit système mécanique comprenant une ou plusieurs biellettes de transmission (80) joignant le châssis de suspension (9) à la ou les parois souples (6).Centrifugal continuous operation according to claims 4 and 7, wherein the centrifuge drum, optionally the other members integral in rotation of the centrifuge drum, or the drive means being carried by a suspension frame (9) damped relative to the base (71) via elastomeric blocks (90), said mechanical system comprising one or more transmission links (80) joining the suspension frame (9) to the one or more flexible walls (6). Centrifugeuse selon l'une des revendications 1 à 8, dans laquelle la paroi souple (6 ; 16) ou l'une au moins des parois souples comprend des moyens de fixation amovibles (60), autorisant un retrait pour un accès de maintenance aux composants internes à l'enceinte (50 ; 140).Centrifuge according to one of claims 1 to 8, wherein the flexible wall (6; 16) or at least one of the flexible walls comprises removable fixing means (60), allowing a withdrawal for a maintenance access to the components internal to the enclosure (50; 140). Centrifugeuse selon la revendication 9, dans les moyens de fixation amovible (60) comprennent une fermeture à glissière (61), ou encore un système boucle/crochet.Centrifuge according to claim 9, in the removable fastening means (60) comprise a zipper (61), or a loop / hook system. Centrifugeuse selon l'une des revendications 1 à 10, dans lequel la ou chacune des parois souples (6) est une toile enduite.Centrifuge according to one of claims 1 to 10, wherein the or each of the flexible walls (6) is a coated fabric.
EP18193104.9A 2017-09-08 2018-09-07 Centrifuge for separating sugar crystals from massecuite with a flexible wall Active EP3453772B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1758283A FR3070983B1 (en) 2017-09-08 2017-09-08 CENTRIFUGE FOR SEPARATING SUGAR CRYSTALS FROM MASS CELL WITH FLEXIBLE WALL

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EP3453772A1 true EP3453772A1 (en) 2019-03-13
EP3453772B1 EP3453772B1 (en) 2021-06-02

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2771068C1 (en) * 2021-05-21 2022-04-26 Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования "Московский Государственный Университет Технологий И Управления Имени К.Г. Разумовского (Первый Казачий Университет)" Method for separating white sugar of i crystallization in a centrifugal force field
RU2771067C1 (en) * 2021-05-21 2022-04-26 Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования "Московский Государственный Университет Технологий И Управления Имени К.Г. Разумовского (Первый Казачий Университет)" Method for separating white sugar of the first crystallization in a batch filter centrifuge

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Publication number Priority date Publication date Assignee Title
FR2338746A1 (en) * 1976-01-23 1977-08-19 Braunschweigische Masch Bau DISCONTINUOUS OPERATION CENTRIFUGE
GB1574399A (en) * 1977-01-13 1980-09-03 Fives Cail Babcock Continuous drying installation more particularly for sugars intended for refining
FR2692910A1 (en) * 1992-06-25 1993-12-31 Silver Wetbull Device and method for reducing syrup formation and impact damage on crystals in a sugar centrifuge.
JPH0810000A (en) * 1994-07-05 1996-01-16 Hakko Eng Kk Chute device in centrifuge for separation molasses in sugar manufacturing plant
WO2010130828A1 (en) * 2009-05-15 2010-11-18 Braunschweigische Maschinenbauanstalt Ag Continuous centrifuge

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2338746A1 (en) * 1976-01-23 1977-08-19 Braunschweigische Masch Bau DISCONTINUOUS OPERATION CENTRIFUGE
GB1574399A (en) * 1977-01-13 1980-09-03 Fives Cail Babcock Continuous drying installation more particularly for sugars intended for refining
FR2692910A1 (en) * 1992-06-25 1993-12-31 Silver Wetbull Device and method for reducing syrup formation and impact damage on crystals in a sugar centrifuge.
JPH0810000A (en) * 1994-07-05 1996-01-16 Hakko Eng Kk Chute device in centrifuge for separation molasses in sugar manufacturing plant
WO2010130828A1 (en) * 2009-05-15 2010-11-18 Braunschweigische Maschinenbauanstalt Ag Continuous centrifuge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2771068C1 (en) * 2021-05-21 2022-04-26 Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования "Московский Государственный Университет Технологий И Управления Имени К.Г. Разумовского (Первый Казачий Университет)" Method for separating white sugar of i crystallization in a centrifugal force field
RU2771067C1 (en) * 2021-05-21 2022-04-26 Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования "Московский Государственный Университет Технологий И Управления Имени К.Г. Разумовского (Первый Казачий Университет)" Method for separating white sugar of the first crystallization in a batch filter centrifuge

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FR3070983B1 (en) 2019-09-06
EP3453772B1 (en) 2021-06-02
FR3070983A1 (en) 2019-03-15

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