EP1954397A1 - Discontinuous centrifugal machine which is intended, in particular, to separate molasses from sugar crystals in a masse-cuite - Google Patents

Discontinuous centrifugal machine which is intended, in particular, to separate molasses from sugar crystals in a masse-cuite

Info

Publication number
EP1954397A1
EP1954397A1 EP06794346A EP06794346A EP1954397A1 EP 1954397 A1 EP1954397 A1 EP 1954397A1 EP 06794346 A EP06794346 A EP 06794346A EP 06794346 A EP06794346 A EP 06794346A EP 1954397 A1 EP1954397 A1 EP 1954397A1
Authority
EP
European Patent Office
Prior art keywords
drum
spade
wringer
products
spades
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
EP06794346A
Other languages
German (de)
French (fr)
Other versions
EP1954397B1 (en
Inventor
Jean Urbaniack
Bernard Ravaux
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fives Cail
Fives Cail Babcock SA
Original Assignee
Fives Cail
Fives Cail Babcock SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Fives Cail, Fives Cail Babcock SA filed Critical Fives Cail
Publication of EP1954397A1 publication Critical patent/EP1954397A1/en
Application granted granted Critical
Publication of EP1954397B1 publication Critical patent/EP1954397B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/08—Skimmers or scrapers for discharging ; Regulating thereof
    • 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

  • Discontinuous wringer especially intended to separate the molasses from the sugar crystals of a cooked mass.
  • the invention relates to a discontinuous wringer, especially designed to separate the molasses sugar crystals of a mass cooked.
  • discontinuous wringers are known. These devices comprise a perforated rotary basket, also called centrifugation drum, capable of being loaded with a product cooked mass.
  • the basket is rotated by motor means to separate the molasses sugar crystals through a perforated surface, including sieve, helped in particular by a device for clearing.
  • the clearing device consisting of one or more nozzles arranged in the drum, allows washing the crystals in the basket with a syrup, water or steam.
  • the bottom surface of the basket is opened, and the rotating basket is emptied of the products by means of an unloader device.
  • the discharging devices of the prior art have a scraper element, also called spade, unique and able to scrape the perforated wall of the basket, to allow the emptying of products.
  • the spade is of small dimension relative to the height of the basket and can be driven in a translation movement, when the drum is rotating, over the entire height of the drum.
  • the loader device comprises a single spade slightly smaller than the height of the basket for scraping the entire height of the latter, with a slight vertical movement towards the lower part.
  • the structure of the basket of the devices of the prior art is subject, during scraping operations, to poorly constrained distributed and which cause, over time, premature wear of the device, and more particularly the rotating members, namely motor, rotation shaft, bearing ....
  • the object of the present invention is to provide a discontinuous wringer which overcomes the aforementioned drawbacks and allows a better distribution of forces during scraping operations.
  • Another object of the invention is to provide a discontinuous wringer for increasing production rates, in particular by reducing the time required for unloading the wrung product.
  • the invention relates first of all to a discontinuous wringer, in particular for separating the molasses from the sugar crystals of a cooked mass, the wringer comprising at least the following elements:
  • centrifugation drum intended to receive products to be treated, and having a permeable wall
  • the invention also relates to a method for discharging the products of a centrifuge drum from a batch wringer, wherein the drum is rotated:
  • each of the spades is brought towards the permeable wall of the drum, from a release position to a position of contact with the products in order to scrape the products,
  • FIG. 1 is a simplified view in a vertical section of a discontinuous wringer according to the invention
  • FIG. 2 is a simplified view from above of the discontinuous wringer as illustrated in FIG. 1,
  • FIG. 3 is a simplified side view of the discontinuous wringer as illustrated in FIG.
  • the invention relates first of all to a discontinuous wringer 1, in particular for separating the molasses from the sugar crystals of a cooked mass.
  • the wringer comprises at least the following elements:
  • centrifuging drum 2 intended to receive products to be treated and having a permeable wall 40
  • An unloader device comprising means for scraping the inner permeable wall 40 of the drum.
  • said means for scraping the wall 40 are constituted by a set of at least two spades 5, 6 distributed inside the drum and articulated at least in rotation along a vertical axis.
  • the drum 2 is housed in a tank 15, arranged vertically, in particular carried by a coaxial rotation shaft 7.
  • the motor means 3, including electric are subject to above and in line with the tank via a support structure 16.
  • the drum 2 is perforated laterally, in whole or in part, by its permeable wall 40, and open on its upper part, according to known techniques.
  • the fluids extracted by centrifugation are discharged from the tank 15 through a discharge outlet 14, in particular lateral.
  • the drum of the wringer is furthermore equipped with an opening / closing device 9, located on the lower lower part of the drum, and allowing the unloading of the treated products in a hopper 13, in particular located vertically and vertically. below the tank 15.
  • Each of the spades 5, 6 is vertically attached to the distal end of a rod 21, 22.
  • each rod 21, 22 is articulated at its proximal end by means of a pivot connection. Cylinders advantageously make it possible to control the angular orientation of each of the spades 5, 6 in the drum 2.
  • the spades 5, 6 are oriented in a release position so as to oppose less resistance to the rotation of the drum 2.
  • each of the spades 5, 6 is oriented angularly in the direction of the permeable wall 40 of the drum 2.
  • first spade 5 and the second spade 6 can be shifted over the height of the drum to scrape respectively the upper part and the lower part of the drum 2.
  • the height of the spades 5, 6 corresponds substantially to half the height of the wall 40 of the drum 2, with a slight overlap of the middle part.
  • the first spade 5 is located on an upper portion of the drum 2, provided vertically fixed, the device further having means 23 for moving the second spade 6 in translation of a limited vertical course.
  • the rod 21 can then be articulated at its proximal end by means of a sliding pivot connection.
  • the drum 2 is secured to the shaft 7 of rotation of the motor means 3 at a hub 8 located on the lower part of the drum. As illustrated in Figure 1, the hub 8 may be conical, projecting inwardly of the drum.
  • the second spade 6 is able to move a limited vertical stroke from an intermediate position of the drum 2 to scrape the lower part of the drum at the hub 8.
  • the second spade 6 can then be oriented in said release position without the hub 8 constitutes an obstacle.
  • said first spade means to move in vertical translation of a limited vertical stroke, like the said second spade.
  • the rod 22 can then be articulated at its proximal end by means of a sliding pivot connection
  • the wringer can therefore have two spades 5, 6, each articulated in translation and in rotation. During the unloading phase, the two spades can be ordered simultaneously or independently.
  • the wringer may have means for controlling each of the two spades independently, in order to obtain a non-simultaneous vertical movement of the spades, allowing better evacuation of the products.
  • Said means for controlling the two spades allow, for example, to operate in translation the first spade 5, upper, downwards, then to actuate in translation the second spade 6 lower, down, offset.
  • the height of the drum may be between 900 mm and 1300 mm.
  • the rotation shaft 7 may advantageously be equipped with a deflector 4 making it possible to feed the drum 2 without the products coming to agglutinate at the center of the drum, in particular at the hub 8.
  • the fact that the second spade 6 can be raised allows the deflector 4, in a variant, to be lifted without the lower part of the deflector comes into contact with said second spade 6.
  • first spade 5 and the second spade 6 are arranged, diametrically opposite, on either side of the axis of rotation of the drum 2.
  • This arrangement advantageously allows to distribute the best efforts induced during scraping, including to preserve the rotating parts of the wringer.
  • the hub 8 is perforated so as to constitute a discharge outlet of the products contained in the drum 2.
  • the wringer then has a shutter 9 adapted to close or open said exhaust outlet.
  • the shutter 9 further comprises translational means 10 for disengaging the shutter 9 of the bottom 41 of the drum 2, thereby opening the discharge outlet.
  • the translation means 10 may be constituted by a hydraulic jack device for raising or lowering the shutter 9.
  • the wringer 1 may further be equipped with a lighting device 11 fixed or mobile. As illustrated in FIG. 1, this lighting device may consist of at least one tubular conduit 11 arranged vertically in the drum, said tubular pipe being equipped with one or more nozzles for spraying a fluid such as water, syrup, steam, or the like.
  • the invention also relates to a product treatment process, in particular for separating the molasses from the sugar crystals of a cooked mass used in the batch wringer 1 according to the invention.
  • the drum 2 is filled with products to be treated, the speed of rotation of the drum 2 is gradually increased, in particular in several steps, to a given spin speed, each of the two spades 5, 6 being held in a position release,
  • the given spin speed is maintained for a predetermined time
  • the invention also relates to a method for discharging the products of a centrifuge drum 2 of a discontinuous wringer 1 according to the invention according to one embodiment, in which the drum 2 is actuated in rotation:
  • each of the spades 5, 6 is brought from a release position to a position of contact with the products towards the wall of the drum in order to scrape the products, for example with a cutting edge directed against the direction of rotation of the drum,
  • the products are scraped by further animating the second spade 6 and / or the first spade 5 of a translational movement of descent, and at the end of the step,

Landscapes

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

Abstract

The discontinuous spin-dryer (1) to separate molasses from sugar crystals of a cooked mass, comprises centrifugation drum (2) to receive treated products, permeable wall (40), engines to rotate the drum along a vertical axis, unloading device to scrape the interior permeable wall of the drum, obturator to close/open an exit evacuation and washing device. Spades are shifted on the height of the drum to scrape an upper and lower part of the drum. The first spade is placed vertically on the upper part of the drum. The discontinuous spin-dryer to separate molasses from sugar crystals of a cooked mass, comprises centrifugation drum to receive treated products, permeable wall, engines to rotate the drum along a vertical axis, unloading device to scrape the interior permeable wall of the drum, obturator to close/open an exit evacuation and washing device. Spades are shifted on the height of the drum to scrape an upper and lower part of the drum. The first spade is placed vertically on the upper part of the drum. The drum is attached with a shaft (7) of engines at the hub level (8), which is placed on the lower part of the drum. The spades are arranged diametrically at the axis of rotation of the drum. The hub is an openwork that forms an exit evacuation of the products contained in the drum. An independent claim is included for a method to discharge the products from a drum.

Description

Titre : Essoreuse discontinue, notamment prévue pour séparer la mélasse des cristaux de sucre d'une masse cuite.Title: Discontinuous wringer, especially intended to separate the molasses from the sugar crystals of a cooked mass.
L'invention concerne une essoreuse discontinue, notamment prévue pour séparer la mélasse des cristaux de sucre d'une masse cuite. Dans le domaine du traitement industriel pour la fabrication du sucre, on connaît les essoreuses discontinues. Ces dispositifs comprennent un panier rotatif ajouré, encore appelé tambour de centrifugation, susceptible d'être chargé d'une masse cuite de produit.The invention relates to a discontinuous wringer, especially designed to separate the molasses sugar crystals of a mass cooked. In the field of industrial processing for the manufacture of sugar, discontinuous wringers are known. These devices comprise a perforated rotary basket, also called centrifugation drum, capable of being loaded with a product cooked mass.
Le panier est entraîné en rotation par des moyens moteurs afin de séparer la mélasse des cristaux de sucre au travers d'une surface ajourée, notamment tamis, aidé notamment par un dispositif de clairçage.The basket is rotated by motor means to separate the molasses sugar crystals through a perforated surface, including sieve, helped in particular by a device for clearing.
Le dispositif de clairçage, constitué par une ou plusieurs buses disposées dans le tambour, permet le lavage des cristaux dans le panier avec un sirop, de l'eau, ou encore de la vapeur. En fin de traitement, la surface inférieure du panier est ouverte, et le panier rotatif est vidé des produits par l'intermédiaire d'un dispositif déchargeur.The clearing device, consisting of one or more nozzles arranged in the drum, allows washing the crystals in the basket with a syrup, water or steam. At the end of treatment, the bottom surface of the basket is opened, and the rotating basket is emptied of the products by means of an unloader device.
Les dispositifs déchargeurs de l'art antérieur présentent un élément racleur, encore appelé bêche, unique et apte à racler la paroi ajourée du panier, pour permettre le vidage des produits.The discharging devices of the prior art have a scraper element, also called spade, unique and able to scrape the perforated wall of the basket, to allow the emptying of products.
De manière connue, selon une première variante, la bêche est de faible dimension par rapport à la hauteur du panier et peut être animée d'un mouvement de translation, lorsque le tambour est en rotation, sur toute la hauteur du tambour. Selon une autre variante, notamment divulguée dans le document US-6.177.021 , le dispositif de chargeur comporte une seule bêche de dimension légèrement inférieure à la hauteur du panier pour racler sur toute la hauteur de ce dernier, avec un léger mouvement vertical vers la partie inférieure. Toutefois, la structure du panier des dispositifs de l'art antérieur est soumise, lors des opérations de raclage, à des contraintes mal réparties et qui entraînent, avec le temps, une usure prématurée du dispositif, et plus particulièrement des organes tournants, à savoir moteur, arbre de rotation, palier ....In a known manner, according to a first variant, the spade is of small dimension relative to the height of the basket and can be driven in a translation movement, when the drum is rotating, over the entire height of the drum. According to another variant, notably disclosed in the document US Pat. No. 6,177,021, the loader device comprises a single spade slightly smaller than the height of the basket for scraping the entire height of the latter, with a slight vertical movement towards the lower part. However, the structure of the basket of the devices of the prior art is subject, during scraping operations, to poorly constrained distributed and which cause, over time, premature wear of the device, and more particularly the rotating members, namely motor, rotation shaft, bearing ....
Le but de la présente invention est de proposer une essoreuse discontinue qui pallie les inconvénients précités et permet une meilleure répartition des efforts lors des opérations de raclage.The object of the present invention is to provide a discontinuous wringer which overcomes the aforementioned drawbacks and allows a better distribution of forces during scraping operations.
Un autre but de l'invention est de proposer une essoreuse discontinue permettant d'augmenter les cadences de production, notamment en diminuant le temps nécessaire au déchargement du produit essoré. D'autres buts et avantages de l'invention apparaîtront 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.Another object of the invention is to provide a discontinuous wringer for increasing production rates, in particular by reducing the time required for unloading the wrung product. Other aims and advantages of the invention will become apparent from the description which follows, which is given for information only, and which is not intended to limit it.
L'invention concerne tout d'abord une essoreuse discontinue, notamment destinée à séparer la mélasse des cristaux de sucre d'une masse cuite, l'essoreuse comprenant au moins les éléments suivants :The invention relates first of all to a discontinuous wringer, in particular for separating the molasses from the sugar crystals of a cooked mass, the wringer comprising at least the following elements:
- un tambour de centrifugation, destiné à recevoir des produits à traiter, et présentant une paroi perméable,a centrifugation drum, intended to receive products to be treated, and having a permeable wall,
- des moyens moteurs pour entraîner en rotation le tambour suivant un axe de rotation vertical, - un dispositif déchargeur présentant des moyens pour racler la paroi perméable intérieure du tambour, caractérisée en ce que lesdits moyens pour racler la paroi sont constitués par un ensemble d'au moins deux bêches réparties à l'intérieur du tambour et articulées au moins en rotation suivant un axe vertical. L'invention concerne également un procédé pour décharger les produits d'un tambour de centrifugation d'une essoreuse discontinue, dans lequel le tambour étant actionné en rotation :- Motor means for rotating the drum in a vertical axis of rotation, - An unloader device having means for scraping the inner permeable wall of the drum, characterized in that said means for scraping the wall are constituted by a set of at least two spades distributed inside the drum and articulated at least in rotation along a vertical axis. The invention also relates to a method for discharging the products of a centrifuge drum from a batch wringer, wherein the drum is rotated:
- on amène chacune des bêches vers la paroi perméable du tambour, d'une position de dégagement à une position de contact avec les produits afin de racler les produits,each of the spades is brought towards the permeable wall of the drum, from a release position to a position of contact with the products in order to scrape the products,
- on racle les produits en animant en outre la deuxième bêche d'un mouvement en translation de descente, et dès la fin de l'étape,- we scrape the products by animating the second spade of a movement in translation of descent, and as of the end of the step,
- on remonte la deuxième bêche et on amène chacune des bêches de ladite position de contact vers ladite position de dégagement.- Going up the second spade and brings each of the spades of said contact position to said release position.
L'invention sera mieux comprise à la lecture de la description suivante, accompagnée des dessins en annexe qui en font partie intégrante et parmi lesquels :The invention will be better understood on reading the following description, accompanied by the appended drawings which form an integral part thereof and among which:
- la figure 1 est une vue simplifiée selon une coupe verticale d'une essoreuse discontinue conforme à l'invention,FIG. 1 is a simplified view in a vertical section of a discontinuous wringer according to the invention,
- la figure 2 est une vue simplifiée de dessus de l'essoreuse discontinue telle qu'illustrée à la figure 1 ,FIG. 2 is a simplified view from above of the discontinuous wringer as illustrated in FIG. 1,
- la figure 3 est une vue simplifiée de côté de l'essoreuse discontinue telle qu'illustrée à la figure 1.FIG. 3 is a simplified side view of the discontinuous wringer as illustrated in FIG.
L'invention concerne tout d'abord une essoreuse discontinue 1, notamment destinée à séparer la mélasse des cristaux de sucre d'une masse cuite.The invention relates first of all to a discontinuous wringer 1, in particular for separating the molasses from the sugar crystals of a cooked mass.
L'essoreuse comprend au moins les éléments suivants :The wringer comprises at least the following elements:
- un tambour 2 de centrifugation, destiné à recevoir des produits à traiter, et présentant une paroi perméable 40,a centrifuging drum 2 intended to receive products to be treated and having a permeable wall 40,
- des moyens moteurs 3 pour entraîner en rotation le tambour 2 suivant un axe de rotation vertical,motor means 3 for rotating the drum 2 in a vertical axis of rotation,
- un dispositif déchargeur comprenant des moyens pour racler la paroi perméable 40 intérieure du tambour.- An unloader device comprising means for scraping the inner permeable wall 40 of the drum.
Selon l'invention, lesdits moyens pour racler la paroi 40 sont constitués par un ensemble d'au moins deux bêches 5, 6 réparties à l'intérieur du tambour et articulées au moins en rotation suivant un axe vertical.According to the invention, said means for scraping the wall 40 are constituted by a set of at least two spades 5, 6 distributed inside the drum and articulated at least in rotation along a vertical axis.
Tel qu'illustré à la figure 1 , selon un exemple de réalisation, le tambour 2 est logé dans une cuve 15, disposée verticalement, notamment portée par un arbre de rotation coaxial 7. Les moyens moteurs 3, notamment électriques sont assujettis au-dessus et à l'aplomb de la cuve par l'intermédiaire d'une structure porteuse 16.As illustrated in Figure 1, according to an exemplary embodiment, the drum 2 is housed in a tank 15, arranged vertically, in particular carried by a coaxial rotation shaft 7. The motor means 3, including electric are subject to above and in line with the tank via a support structure 16.
Le tambour 2 est ajouré latéralement, en tout ou partie, par sa paroi perméable 40, et ouvert sur sa partie supérieure, selon des techniques connues. Une conduite d'amenée de produit 12, notamment de masse cuite qui permet de remplir le tambour d'une quantité de produits à traiter, par exemple au moyen d'un clapet 17 notamment actionné par un vérin. Les fluides extraits par la centrifugation sont évacués de la cuve 15 par une sortie d'évacuation 14, notamment latérale.The drum 2 is perforated laterally, in whole or in part, by its permeable wall 40, and open on its upper part, according to known techniques. A product feed pipe 12, in particular of the mass produced which makes it possible to fill the drum with a quantity of products to be treated, for example by means of a valve 17 in particular actuated by a jack. The fluids extracted by centrifugation are discharged from the tank 15 through a discharge outlet 14, in particular lateral.
Le tambour de l'essoreuse est en outre équipé d'un dispositif d'ouverture/fermeture 9, situé sur la partie basse inférieure du tambour, et permettant le déchargement des produits traités dans une trémie 13, notamment située à l'aplomb et en-dessous de la cuve 15.The drum of the wringer is furthermore equipped with an opening / closing device 9, located on the lower lower part of the drum, and allowing the unloading of the treated products in a hopper 13, in particular located vertically and vertically. below the tank 15.
Chacune des bêches 5, 6 est assujettie verticalement à l'extrémité distale d'une tige 21 , 22. Avantageusement, chaque tige 21 , 22 est articulée, à son extrémité proximale au moyen d'une liaison pivot. Des vérins permettent avantageusement de contrôler l'orientation angulaire de chacune des bêches 5, 6 dans le tambour 2.Each of the spades 5, 6 is vertically attached to the distal end of a rod 21, 22. Advantageously, each rod 21, 22 is articulated at its proximal end by means of a pivot connection. Cylinders advantageously make it possible to control the angular orientation of each of the spades 5, 6 in the drum 2.
Aussi, en dehors de la phase de déchargement du tambour, les bêches 5, 6 sont orientées dans une position de dégagement de telle façon à opposer une résistance moindre à la rotation du tambour 2.Also, apart from the unloading phase of the drum, the spades 5, 6 are oriented in a release position so as to oppose less resistance to the rotation of the drum 2.
Lors de l'étape de déchargement du tambour, chacune des bêches 5, 6 est orientée angulairement en direction de la paroi perméable 40 du tambour 2.During the step of unloading the drum, each of the spades 5, 6 is oriented angularly in the direction of the permeable wall 40 of the drum 2.
Telles qu'illustrées à la figure 1 , dans une variante de réalisation, la première bêche 5 et la deuxième bêche 6 peuvent être décalées sur la hauteur du tambour pour racler respectivement la partie supérieure et la partie inférieure du tambour 2.As illustrated in Figure 1, in an alternative embodiment, the first spade 5 and the second spade 6 can be shifted over the height of the drum to scrape respectively the upper part and the lower part of the drum 2.
Dans le mode de réalisation illustré, la hauteur des bêches 5, 6 correspond sensiblement à la moitié de la hauteur de la paroi 40 du tambour 2, avec un léger chevauchement de la partie médiane.In the illustrated embodiment, the height of the spades 5, 6 corresponds substantially to half the height of the wall 40 of the drum 2, with a slight overlap of the middle part.
Avantageusement, la première bêche 5 est située sur une portion haute du tambour 2, prévue fixe verticalement, le dispositif présentant en outre des moyens 23 pour déplacer la deuxième bêche 6 en translation d'une course verticale limitée.Advantageously, the first spade 5 is located on an upper portion of the drum 2, provided vertically fixed, the device further having means 23 for moving the second spade 6 in translation of a limited vertical course.
Ces moyens permettent avantageusement, selon une variante, de déplacer la tige 21 verticalement. La tige 21 peut être alors articulée à son extrémité proximale au moyen d'une liaison pivot glissant. Le tambour 2 est assujetti à l'arbre 7 de rotation des moyens moteurs 3 au niveau d'un moyeu 8 situé sur la partie basse du tambour. Tel qu'illustré à la figure 1 , le moyeu 8 peut être conique, faisant saillie vers l'intérieur du tambour.These means advantageously allow, according to a variant, to move the rod 21 vertically. The rod 21 can then be articulated at its proximal end by means of a sliding pivot connection. The drum 2 is secured to the shaft 7 of rotation of the motor means 3 at a hub 8 located on the lower part of the drum. As illustrated in Figure 1, the hub 8 may be conical, projecting inwardly of the drum.
Avantageusement, la deuxième bêche 6 est apte à se déplacer d'une course verticale limitée à partir d'une position intermédiaire du tambour 2 pour venir racler la partie basse du tambour au niveau du moyeu 8.Advantageously, the second spade 6 is able to move a limited vertical stroke from an intermediate position of the drum 2 to scrape the lower part of the drum at the hub 8.
Dans ladite position intermédiaire, la deuxième bêche 6 peut être alors orientée dans ladite position de dégagement sans que le moyeu 8 constitue un obstacle. De même, il peut être envisagé d'équiper ladite première bêche de moyens pour la déplacer en translation verticale d'une course verticale limitée, à l'instar de ladite deuxième bêche. La tige 22 peut être alors articulée à son extrémité proximale au moyen d'une liaison pivot glissantIn said intermediate position, the second spade 6 can then be oriented in said release position without the hub 8 constitutes an obstacle. Similarly, it may be envisaged to equip said first spade means to move in vertical translation of a limited vertical stroke, like the said second spade. The rod 22 can then be articulated at its proximal end by means of a sliding pivot connection
L'essoreuse peut donc présenter deux bêches 5, 6, chacune articulée en translation et en rotation. Lors de la phase de déchargement des produits, les deux bêches peuvent être commandées de manière simultanée ou de manière indépendante.The wringer can therefore have two spades 5, 6, each articulated in translation and in rotation. During the unloading phase, the two spades can be ordered simultaneously or independently.
Avantageusement, l'essoreuse peut présenter des moyens pour commander chacune des deux bêches de manière indépendante, afin d'obtenir un déplacement vertical non simultané des bêches, permettant une meilleure évacuation des produits.Advantageously, the wringer may have means for controlling each of the two spades independently, in order to obtain a non-simultaneous vertical movement of the spades, allowing better evacuation of the products.
Lors des essais, il a notamment été constaté qu'un déplacement vertical simultané des bêches provoquait des éclaboussures sur la bêche opposée. Les produits agglutinés sur les bêches ne sont alors pas évacués et conduisent à des pertes lors du lavage final.During the tests, it was found in particular that a simultaneous vertical movement of the spades caused splashing on the opposite spade. The products agglutinated on the spades are not then evacuated and lead to losses during the final wash.
Lesdits moyens pour commander les deux bêches permettent, par exemple, d'actionner en translation la première bêche 5, supérieure, vers le bas, puis d'actionner en translation la deuxième bêche 6 inférieure, vers le bas, en décalé.Said means for controlling the two spades allow, for example, to operate in translation the first spade 5, upper, downwards, then to actuate in translation the second spade 6 lower, down, offset.
Ces deux bêches permettent d'effectuer de 18 à 35 cycles complets d'essorage par heure pour des quantités de masse cuite allant de 750 kg à 2500 kg. La hauteur du tambour peut être comprise entre 900 mm et 1300 mm.These two spades make it possible to carry out 18 to 35 complete cycles of spinning per hour for quantities of mass mass ranging from 750 kg to 2500 kg. The height of the drum may be between 900 mm and 1300 mm.
L'arbre de rotation 7 peut être avantageusement équipé d'un déflecteur 4 permettant d'alimenter le tambour 2 sans que les produits ne viennent s'agglutiner au centre du tambour, notamment au niveau du moyeu 8.The rotation shaft 7 may advantageously be equipped with a deflector 4 making it possible to feed the drum 2 without the products coming to agglutinate at the center of the drum, in particular at the hub 8.
Par ailleurs, le fait que la deuxième bêche 6 puisse être remontée permet au déflecteur 4, dans une variante, d'être levé sans que la partie inférieure du déflecteur vienne en contact avec ladite deuxième bêche 6.Furthermore, the fact that the second spade 6 can be raised allows the deflector 4, in a variant, to be lifted without the lower part of the deflector comes into contact with said second spade 6.
Par exemple, la première bêche 5 et la deuxième bêche 6 sont disposées, diamétralement opposées, de part et d'autre de l'axe de rotation du tambour 2. Cette disposition permet avantageusement de répartir au mieux les efforts induits lors du raclage, notamment afin de préserver les organes tournants de l'essoreuse. Toutefois, d'autres dispositions peuvent être envisagées. Le moyeu 8 est ajouré afin de constituer une sortie d'évacuation des produits contenus dans le tambour 2. L'essoreuse présente alors un obturateur 9 apte à fermer ou ouvrir ladite sortie d'évacuation.For example, the first spade 5 and the second spade 6 are arranged, diametrically opposite, on either side of the axis of rotation of the drum 2. This arrangement advantageously allows to distribute the best efforts induced during scraping, including to preserve the rotating parts of the wringer. However, other provisions may be considered. The hub 8 is perforated so as to constitute a discharge outlet of the products contained in the drum 2. The wringer then has a shutter 9 adapted to close or open said exhaust outlet.
Tel qu'illustré à la figure 1 , selon un mode de réalisation, l'obturateur 9 présente en outre des moyens de translation 10 pour dégager l'obturateur 9 du fond 41 du tambour 2, ouvrant ainsi la sortie d'évacuation. Selon ce mode de réalisation, les moyens de translation 10 peuvent être constitués par un dispositif à vérin hydraulique permettant de monter ou de descendre l'obturateur 9.As illustrated in Figure 1, according to one embodiment, the shutter 9 further comprises translational means 10 for disengaging the shutter 9 of the bottom 41 of the drum 2, thereby opening the discharge outlet. According to this embodiment, the translation means 10 may be constituted by a hydraulic jack device for raising or lowering the shutter 9.
L'essoreuse 1 pourra en outre être équipée d'un dispositif de clairçage 11 fixe ou mobile. Tel qu'illustré à la figure 1 , ce dispositif de clairçage peut être constitué par au moins une conduite tubulaire 11 disposée verticalement dans le tambour, ladite conduite tubulaire étant équipée d'une ou plusieurs buses permettant la pulvérisation d'un fluide tel que de l'eau, du sirop, de la vapeur, ou autres.The wringer 1 may further be equipped with a lighting device 11 fixed or mobile. As illustrated in FIG. 1, this lighting device may consist of at least one tubular conduit 11 arranged vertically in the drum, said tubular pipe being equipped with one or more nozzles for spraying a fluid such as water, syrup, steam, or the like.
L'invention concerne également un procédé de traitement de produit, notamment destiné à séparer la mélasse des cristaux de sucre d'une masse cuite mise en œuvre dans l'essoreuse discontinue 1 conforme à l'invention.The invention also relates to a product treatment process, in particular for separating the molasses from the sugar crystals of a cooked mass used in the batch wringer 1 according to the invention.
Selon le procédé :According to the method:
- on remplit le tambour 2 de produits à traiter, - on augmente progressivement, notamment en plusieurs étapes, la vitesse de rotation du tambour 2 jusqu'à une vitesse d'essorage donnée, chacune des deux bêches 5, 6 étant maintenue dans une position de dégagement,the drum 2 is filled with products to be treated, the speed of rotation of the drum 2 is gradually increased, in particular in several steps, to a given spin speed, each of the two spades 5, 6 being held in a position release,
- on maintient la vitesse d'essorage donnée de rotation pendant un temps déterminé,the given spin speed is maintained for a predetermined time,
- on diminue la vitesse de rotation du tambour 2 et, ensuite, on décharge les produits par raclage.- The speed of rotation of the drum 2 is reduced and then the products are discharged by scraping.
L'invention concerne également un procédé pour décharger les produits d'un tambour 2 de centrifugation d'une essoreuse discontinue 1 conforme à l'invention selon un mode de réalisation, dans lequel le tambour 2 étant actionné en rotation :The invention also relates to a method for discharging the products of a centrifuge drum 2 of a discontinuous wringer 1 according to the invention according to one embodiment, in which the drum 2 is actuated in rotation:
- on amène chacune des bêches 5, 6 d'une position de dégagement à une position de contact avec les produits vers la paroi du tambour afin de racler les produits, par exemple avec un tranchant dirigé à rencontre de la direction de rotation du tambour,each of the spades 5, 6 is brought from a release position to a position of contact with the products towards the wall of the drum in order to scrape the products, for example with a cutting edge directed against the direction of rotation of the drum,
- on racle les produits en animant, en outre, la deuxième bêche 6 et/ou la première bêche 5 d'un mouvement en translation de descente, et dès la fin de l'étape,- The products are scraped by further animating the second spade 6 and / or the first spade 5 of a translational movement of descent, and at the end of the step,
- on remonte la deuxième bêche 6 et/ou la première bêche 5 et on amène chacune des bêches 5, 6 de la position de contact vers ladite position de dégagement. Naturellement, d'autres modes de mise en œuvre, à la portée de l'homme de l'art, auraient pu être envisagés sans pour autant sortir du cadre de l'invention, par exemple, en disposant plus de deux bêches de raclage, afin de répartir les efforts dus au raclage sur le tambour. - Going up the second spade 6 and / or the first spade 5 and brings each of the spades 5, 6 from the contact position to said release position. Naturally, other modes of implementation, within the reach of those skilled in the art, could have been envisaged without departing from the scope of the invention, for example, by having more than two scraping spades, in order to distribute the forces due to scraping on the drum.

Claims

REVENDICATIONS
1. Essoreuse discontinue (1), notamment destinée à séparer la mélasse des cristaux de sucre d'une masse cuite, l'essoreuse comprenant au moins les éléments suivants: - un tambour (2) de centrifugation, destiné à recevoir des produits à traiter, et présentant une paroi perméable (40),1. Discontinuous wringer (1), in particular for separating the molasses from the sugar crystals of a cooked mass, the wringer comprising at least the following elements: - a centrifugation drum (2) intended to receive products to be treated and having a permeable wall (40),
- des moyens moteurs (3) pour entraîner en rotation le tambour (2) suivant un axe de rotation vertical,- motor means (3) for rotating the drum (2) in a vertical axis of rotation,
- un dispositif déchargeur présentant des moyens pour racler la paroi perméable (40) intérieure du tambour, caractérisé en ce que lesdits moyens pour racler la paroi (40) sont constitués par un ensemble d'au moins deux bêches (5, 6) réparties à l'intérieur du tambour et articulées au moins en rotation suivant un axe vertical.an unloading device having means for scraping the permeable wall (40) inside the drum, characterized in that said means for scraping the wall (40) consist of a set of at least two spades (5, 6) distributed at the inside of the drum and articulated at least in rotation along a vertical axis.
2. Essoreuse discontinue selon la revendication 1, dans laquelle la première bêche (5) et la deuxième bêche (6) sont décalées sur la hauteur du tambour pour racler respectfvemenf la partie supérieure et la partie inférieure du tambour.A discontinuous wringer according to claim 1, wherein the first spade (5) and the second spade (6) are offset over the height of the drum to scrape respectfvemenf the upper part and the lower part of the drum.
3. Essoreuse discontinue, selon la revendication 2, dans laquelle la première bêche (5) est située sur une portion haute du tambour, prévue fixe verticalement, le dispositif présentant en outre des moyens pour déplacer la deuxième bêche (6) en translation d'une course verticale limitée.3. discontinuous wringer according to claim 2, wherein the first spade (5) is located on an upper portion of the drum, provided vertically fixed, the device further having means for moving the second spade (6) in translation of a limited vertical stroke.
4. Essoreuse selon la revendication 3 dans laquelle, le tambour (2) est assujetti à l'arbre (7) de rotation des moyens moteurs (3) au niveau d'un moyeu (8) situé sur la partie basse du tambour et la deuxième bêche (6) est apte à se déplacer d'une course verticale limitée à partir d'une position intermédiaire du tambour (2) pour venir racler la partie basse du tambour au niveau du moyeu (8).4. Wringer according to claim 3 wherein the drum (2) is secured to the shaft (7) of rotation of the drive means (3) at a hub (8) located on the lower part of the drum and the second spade (6) is adapted to move a limited vertical stroke from an intermediate position of the drum (2) to scrape the lower part of the drum at the hub (8).
5. Essoreuse discontinue, selon la revendication 3, dans laquelle ladite première bêche (5) est équipée de moyens pour la déplacer en translation verticale d'une course limitée.5. discontinuous wringer according to claim 3, wherein said first spade (5) is equipped with means for moving it in vertical translation of a limited stroke.
6. Essoreuse selon la revendication 1 , dans laquelle la première bêche (5) et la deuxième bêche (6) sont disposées diamétralement opposées de part et d'autre de l'axe de rotation du tambour.6. Wringer according to claim 1, wherein the first spade (5) and the second spade (6) are arranged diametrically opposite on either side of the axis of rotation of the drum.
7. Essoreuse selon la revendication 4, dans laquelle le moyeu (8) est ajouré afin de constituer une sortie d'évacuation des produits contenus dans le tambour (2), l'essoreuse présentant en outre un obturateur (9) apte à fermer ou ouvrir ladite sortie d'évacuation.7. Wringer according to claim 4, wherein the hub (8) is perforated to form a discharge outlet of the products contained in the drum (2), the wringer further having a shutter (9) adapted to close or open said evacuation outlet.
8. Essoreuse selon la revendication 7, dans laquelle l'obturateur (9) présente des moyens de translation (10) pour le dégager du fond (41) du tambour (2), ouvrant ainsi la sortie d'évacuation. 8. Wringer according to claim 7, wherein the shutter (9) has translation means (10) for disengaging the bottom (41) of the drum (2), thereby opening the discharge outlet.
9. Essoreuse selon l'une des revendications précédentes 1 à 8 présentant en outre un dispositif de clairçage (11).9. Wringer according to one of the preceding claims 1 to 8 further having a clearing device (11).
10. Procédé pour décharger les produits d'un tambour (2) de centrifugation d'une essoreuse discontinue (1) selon la revendication 3, dans lequel le tambour (2) étant actionné en rotation : - on amène chacune des bêches (5, 6) vers la paroi perméable du tambour, d'une position de dégagement à une position de contact avec les produits afin de racler les produits,10. A method for discharging the products of a centrifugal drum (2) of a batch wringer (1) according to claim 3, wherein the drum (2) being actuated in rotation: - is brought each of the spades (5, 6) to the permeable wall of the drum, from a release position to a product contacting position for scraping the products,
- on racle les produits en animant en outre la deuxième bêche- we scrape the products by animating the second spade
(6) d'un mouvement en translation de descente, et dès la fin de l'étape, - on remonte la deuxième bêche (6) et on amène chacune des bêches (5, 6) de ladite position de contact vers ladite position de dégagement. (6) of a movement in downward translation, and at the end of the step, - the second spade (6) is raised and each of the spades (5, 6) is brought from said contact position to said position of clearance.
EP06794346A 2005-08-31 2006-08-23 Discontinuous centrifugal machine which is intended, in particular, to separate molasses from sugar crystals in a masse-cuite Active EP1954397B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0508919A FR2889974B1 (en) 2005-08-31 2005-08-31 DISCONTINUOUS SPINNER, ESPECIALLY INTENDED TO SEPARATE THE MELASS OF SUGAR CRYSTALS FROM A MASS CIT
PCT/FR2006/001972 WO2007026068A1 (en) 2005-08-31 2006-08-23 Discontinuous centrifugal machine which is intended, in particular, to separate molasses from sugar crystals in a masse-cuite

Publications (2)

Publication Number Publication Date
EP1954397A1 true EP1954397A1 (en) 2008-08-13
EP1954397B1 EP1954397B1 (en) 2010-07-21

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EP06794346A Active EP1954397B1 (en) 2005-08-31 2006-08-23 Discontinuous centrifugal machine which is intended, in particular, to separate molasses from sugar crystals in a masse-cuite

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EP (1) EP1954397B1 (en)
CN (1) CN101277767B (en)
AT (1) ATE474669T1 (en)
BR (1) BRPI0615336A2 (en)
DE (1) DE602006015680D1 (en)
FR (1) FR2889974B1 (en)
RU (1) RU2384371C2 (en)
WO (1) WO2007026068A1 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
US9764337B2 (en) 2011-11-24 2017-09-19 Bma Braunschweigische Maschinenbauanstalt Ag Discontinuous centrifuge with a scraper for scraping a product

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Publication number Priority date Publication date Assignee Title
DE102012004968A1 (en) * 2012-03-14 2013-09-19 Bma Braunschweigische Maschinenbauanstalt Ag Device with a discontinuous centrifuge for separating syrup from Zuckerfüllmassen
FR3025441B1 (en) * 2014-09-10 2021-05-07 Fives Cail Babcock CENTRIFUGATION DRUM AND WRINKLE EQUIPPED WITH SUCH A DRUM

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GB738825A (en) * 1952-09-04 1955-10-19 Shinzo Sumiya Automatic centrifugal separator
FR1394980A (en) * 1964-02-27 1965-04-09 Fives Lille Cail Discharge device for discontinuous centrifugal wringer
JPS6415164A (en) * 1987-07-08 1989-01-19 Toshimi Kato Solid/liquid separator
JPH01315360A (en) * 1988-06-15 1989-12-20 Eiichi Aihara Centrifugal separator
CN2592911Y (en) * 2002-11-13 2003-12-17 刘楚年 Self-sealing, adjusting-sleeve, lining-board sand pump

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Publication number Priority date Publication date Assignee Title
US9764337B2 (en) 2011-11-24 2017-09-19 Bma Braunschweigische Maschinenbauanstalt Ag Discontinuous centrifuge with a scraper for scraping a product

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FR2889974B1 (en) 2008-05-09
DE602006015680D1 (en) 2010-09-02
EP1954397B1 (en) 2010-07-21
RU2384371C2 (en) 2010-03-20
CN101277767B (en) 2011-09-07
FR2889974A1 (en) 2007-03-02
CN101277767A (en) 2008-10-01
ATE474669T1 (en) 2010-08-15
BRPI0615336A2 (en) 2012-12-11
RU2008112209A (en) 2009-10-10
WO2007026068A1 (en) 2007-03-08

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