EP0062576A1 - Continuously operating centrifuge - Google Patents

Continuously operating centrifuge Download PDF

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Publication number
EP0062576A1
EP0062576A1 EP82400571A EP82400571A EP0062576A1 EP 0062576 A1 EP0062576 A1 EP 0062576A1 EP 82400571 A EP82400571 A EP 82400571A EP 82400571 A EP82400571 A EP 82400571A EP 0062576 A1 EP0062576 A1 EP 0062576A1
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EP
European Patent Office
Prior art keywords
shaft
continuous
perforated wall
rotation
members
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
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EP82400571A
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German (de)
French (fr)
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EP0062576B1 (en
Inventor
Luc Darbonne
Hubert Darbonne
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Daregal SA
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Daregal SA
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Priority to AT82400571T priority Critical patent/ATE13819T1/en
Publication of EP0062576A1 publication Critical patent/EP0062576A1/en
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    • 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
    • B04B3/00—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
    • B04B3/04—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl

Definitions

  • the present invention relates to a continuous wringer, that is to say a wringer having a perforated wall of revolution driven in rotation about its axis, the product flow to be wrung circulating in the axial direction of the wringer.
  • spin dryers generally operate by successive loads, that is to say that a certain volume of material to be wrung is poured into the tank, generally with a vertical axis of the wringer and is removed therefrom after treatment.
  • Dryers, ovens or the like which consist of a wall of revolution driven in rotation about its axis and which operate continuously, the flow of product to be dried being driven in the axial direction of the device.
  • the axial displacement is obtained by simple gravity flow when the axis is inclined, by helical screws or fixed oblique walls which slide the material on the cylindrical wall or by helical fins integral with the wall which cause the material by lifting it along the peripheral wall to slide it by gravity downstream.
  • the treated material is subjected to a centrifugal force much greater than the force of gravity, which the plate against the wall and can not be used natural progression by gravity to circulate matter.
  • the present.invention aims to achieve, despite the above impossibilities, a continuous wringer in which the material progresses from the inlet to the outlet without being subjected to intense mechanical stresses.
  • the wringer combines, with the perforated wall of revolution driven in rotation about its axis, advancing members acting on the layer of material, the trajectory of the advancing members in the part where said members cooperate with the layer of treated material applied against the perforated wall comprising a component in the diametrical plane and an axial component directed downstream.
  • the material is, in the area of action of the advancing members, driven over a relatively small distance downstream but, due to the component in the diametral plane which can be substantially equal to the peripheral speed of the perforated wall therefore of the layer of material, there can be no jamming.
  • the advancement members are constituted by radial elements integral with a shaft mounted obliquely for rotation in the internal volume delimited by the wall of revolution, the length of each radial element being slightly less than the smallest distance from the tree to the perforated wall.
  • the shaft carrying the advancement members could be mounted with free rotation, the rotation being ensured by the thrust on the advancement organs of the material to be wrung; it is however preferable to drive the shaft in rotation positively, the direction of rotation and the speed of the shaft being such that, in the part of their circular trajectory where they come close to the wall, the ends of the radial elements move downstream, their peripheral speed being substantially equal to or preferably slightly higher than the peripheral speed of the internal surface of the perforated wall.
  • the advancement members are constituted by elements mounted for free rotation around ends of integral axes to form a zigzag shaft, the general line of the shaft being parallel to the generatrix of the drum. This makes it possible to use elements of identical radial length and to lengthen the drum of the wringer.
  • the wringer can have either a horizontal, vertical or oblique axis.
  • the perforated wall may be cylindrical, frustoconical or have any other form of director, in a broken or curvilinear line giving it a general cylindro-frustoconical shape, in coil, in barrel or other.
  • the drum In the case of a frustoconical or cylindro-frustoconical shape the drum can be convergent or diverging from upstream to downstream.
  • the downstream end of the shaft may be at a distance from the upper perforated wall propor that of the upstream end.
  • the longitudinal spacing of the neighboring radial elements must be smaller the less their axis of rotation, the lower the arc in which the radial elements cooperate with the mass of material, that is to say that the axis of rotation is closer to the wall, and that the angular spacing of the neighboring radial elements is greater.
  • the radial elements can be arranged in the form of radial plies, possibly consisting of discs, spokes having a greater or lesser elasticity, masses such as brushes or foam rollers, worms or radial longitudinal plies such as continuous walls, pallets or rakes.
  • the angle formed by the axis of rotation of the advancing member with the axis of the wringer drum is a function of the product to be treated and its mechanical characteristics as well as the desired flow rate.
  • the larger this angle the higher the axial component of the peripheral speed of the advancing member relative to the diametrical component, but the more the peripheral speed of the radial elements of the advancing member will vary within wide limits. if they are attached to the same tree. Due to the increase in the axial component, the material flow will be increased.
  • the speed of the wringer can, for a given spin speed, also be increased by increasing the number of advancing members acting on one revolution of the drum. It is also possible to increase the speed of rotation of the machine, but this is not always possible from the mechanical point of view or because of the mechanical resistance of the treated material.
  • the wringer according to the invention can be used for the continuous wringing of practically all mineral, animal or vegetable materials and in particular for preliminary treatment of the materials which must be subjected to drying by lyophilization, heating, etc.
  • Mechanical spinning is an energy-efficient means of extracting loose water such as washing water, etc.
  • the layer of material is stirred in the passage of the advancing members, which further facilitates the elimination of water compared to conventional wringing.
  • the wringer has, in the various embodiments, a perforated wall of revolution 1 which is represented as a cylindrical wall, which is rotated in a known manner around its axis so that the centrifugal force exerted on the material applied against the wall is several times greater than the force of gravity.
  • Reference 2 designates the perforations of which only a small number is shown.
  • a shaft 3 In this enclosure and in the embodiment of Figures 1 to 4 is mounted obliquely by bearings not shown, a shaft 3.
  • the points X where the cross-section 3 intersects the end surfaces of the drum are equidistant from said surface.
  • discs 4 On this shaft are mounted discs 4 which could be replaced by radial rods, pallets or the like depending on the nature of the material to be wrung. The diameters of these discs 4 or the lengths of the rods or the like are such that their peripheral end comes to substantially tangent to the interior surface of the wall 1. As illustrated in FIG.
  • the angular development is determined according to which each disc will cooperate with the material.
  • Figure 4 there is shown the discs with a thicker line 5 the part which cooperates with the material.
  • the peripheral speed of the internal surface of the wall 1 being equal to F, the discs are driven or tend to set, if they are mounted with free rotation on the axis 3 or if the latter is mounted at free rotation, under the effect of the thrust of the material., a peripheral speed f which, at the point of tangency with the wall, decomposes into a speed f p substantially equal to F and a longitudinal component fl directed downstream .
  • the material which has been introduced according to arrow R comes into contact successively with the upstream end of part 5 of the successive discs, moves in contact with the disc and is pushed towards the downstream by being moved, at each passage to the right of the advancing elements, by a distance l.
  • the discs 6 which could be replaced by radial rods, flat foam cylinders, impellers with peripheral edges of the blades shaped in barrel, worms having the same casing , etc. are each mounted on a shaft end 7, the successive shaft ends being joined by offset pieces 8 and all having the same orientation therefore being in the same plane.
  • the discs 6 are therefore carried by the parallel axes of a zigzag support piece.
  • the mechanical rigidity of the support part can result either from the rigid assembly between the parts 8 and the shaft ends 7 on which the discs 6 are mounted for free rotation, or from the fact that the parts 8 are supported by non-bracing shown connecting them, passing between the discs 6, with longitudinal crosspieces 9 fixed at their ends on the support pillars 10.
  • the discs 6 can be rotated for example for each disc from a pulley 11 mounted on an axial shaft 12, by a pulley 13 of which it is integral and a belt 14. It is thus master of the peripheral speed f of each disc by playing on the diameter of the pulley 11 which may be of technical interest. It would also be possible to mount the advancement elements with free rotation. Finally it is possible to modify the nature of the advancement elements according to the direction of progression of the material to adapt them to the modification of fluidity and density dry matter and some of them can be blowing and / or heating elements.

Landscapes

  • Centrifugal Separators (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Drying Of Solid Materials (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Brushless Motors (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Cyclones (AREA)
  • Fats And Perfumes (AREA)

Abstract

The present invention relates to hydro-extractors used for extracting water or other liquids mixed with a treated material. The hydro-extractor according to the invention comprises, in addition to the perforated wall of revolution 1 driven in rotation about its axis, material advancing members 4-6 acting on the material layer, the path of travel f of the advancing members in the region where said members cooperate with the layer m of treated material forcibly applied against the perforated wall 1 comprising a component fp in the diametral plane and an axial component f1 directed downstream. The invention provides a hydro-extractor operating continuously, the dried product circulating in the direction of arrow D.

Description

La présente invention concerne une essoreuse en continu, c'est-à-dire une essoreuse comportant une paroi de révolution perforée entraînée en rotation autour de son axe, le flux de produit à essorer circulant selon la direction axiale de l'essoreuse.The present invention relates to a continuous wringer, that is to say a wringer having a perforated wall of revolution driven in rotation about its axis, the product flow to be wrung circulating in the axial direction of the wringer.

Les essoreuses connues fonctionnent en général par charges successives, c'est-à-dire qu'un certain volume de matière à essorer est déversé dans la cuve en général d'axe vertical de l'essoreuse et en est évacué après traitement. On connaît déjà des séchoirs, des fours ou analogue constitués par une paroi de révolution entraînée en rotation autour de son axe et qui fonctionnent en continu, le flux de produit à sécher étant entraîné selon la direction axiale de l'appareil. Dans ces appareils le déplacement axial est obtenu par simple écoulement par gravité lorsque l'axe est incliné, par des vis hélicoïdales ou des parois obliques fixes qui font glisser la matière sur la paroi cylindrique ou par des ailettes hélicoïdales solidaires de la paroi qui entraînent la matière en la soulevant le long de la paroi périphérique pour la faire glisser par gravité vers l'aval.Known spin dryers generally operate by successive loads, that is to say that a certain volume of material to be wrung is poured into the tank, generally with a vertical axis of the wringer and is removed therefrom after treatment. Dryers, ovens or the like are already known which consist of a wall of revolution driven in rotation about its axis and which operate continuously, the flow of product to be dried being driven in the axial direction of the device. In these devices, the axial displacement is obtained by simple gravity flow when the axis is inclined, by helical screws or fixed oblique walls which slide the material on the cylindrical wall or by helical fins integral with the wall which cause the material by lifting it along the peripheral wall to slide it by gravity downstream.

Dans les essoreuses, la matière traitée est soumise à une force centrifuge très supérieure à la force de gravité, laquelle la plaque contre la paroi et on ne peut utiliser la progression naturelle par gravité pour faire circuler la matière. Pour la même raison on ne peut utiliser des déflecteurs, des vis sans fin d'axe parallèle à l'axe du tambour ou des parois obliques fixés parce qu'en raison de la force centrifuge, la force de frottement sur la paroi perforée serait trop grande, il y aurait bourrage contre les déflecteurs et la matière pourrait être endommagée.In wringers, the treated material is subjected to a centrifugal force much greater than the force of gravity, which the plate against the wall and can not be used natural progression by gravity to circulate matter. For the same reason you cannot use deflectors, worms with an axis parallel to the axis of the drum or oblique walls fixed because due to the centrifugal force, the friction force on the perforated wall would be too large, there would be a jam against the deflectors and the material could be damaged.

La présente.invention a pour but de réaliser, malgré les impossibilités ci-dessus, une essoreuse en continu dans laquelle la matière progresse de l'entrée vers la sortie sans être soumise à des contraintes mécaniques intenses.The present.invention aims to achieve, despite the above impossibilities, a continuous wringer in which the material progresses from the inlet to the outlet without being subjected to intense mechanical stresses.

Conformément à l'invention, l'essoreuse combine, avec la paroi perforée de révolution entraînée en rotation autour de son axe, des organes d'avancement agissant sur la couche de matière, la trajectoire des organes d'avancement dans la partie où lesdits organes coopèrent avec la couche de matière traitée appliquée contre la paroi perforée comportant une composante dans le plan diamétral et une composante axiale dirigée vers l'aval.According to the invention, the wringer combines, with the perforated wall of revolution driven in rotation about its axis, advancing members acting on the layer of material, the trajectory of the advancing members in the part where said members cooperate with the layer of treated material applied against the perforated wall comprising a component in the diametrical plane and an axial component directed downstream.

Avec ce mode de réalisation de l'essoreuse, la matière est, dans la zone d'action des organes d'avancement, entraînée sur une distance relativement faible vers l'aval mais, du fait de la composante dans le plan diamétral qui peut être sensiblement égale à la vitesse périphérique de la paroi perforée donc de la couche de matière, il ne peut y avoir bourrage.With this embodiment of the wringer, the material is, in the area of action of the advancing members, driven over a relatively small distance downstream but, due to the component in the diametral plane which can be substantially equal to the peripheral speed of the perforated wall therefore of the layer of material, there can be no jamming.

Selon un mode de réalisation pratique les organes d'avancement sont constitués par des éléments radiaux solidaires d'un arbre monté obliquement à rotation dans le volume interne délimité par la paroi de révolution, la longueur de chaque élément radial étant légèrement inférieure à la plus petite distance de l'arbre à la paroi perforée.According to a practical embodiment, the advancement members are constituted by radial elements integral with a shaft mounted obliquely for rotation in the internal volume delimited by the wall of revolution, the length of each radial element being slightly less than the smallest distance from the tree to the perforated wall.

.L'arbre portant les organes d'avancement pourrait être monté à rotation libre, la rotation étant assurée par la poussée sur les organes d'avancement de la matière à essorer; il est toutefois préférable d'entraîner positivement l'arbre en rotation, le sens de rotation et la vitesse de l'arbre étant tels que, dans la partie de leur trajectoire circulaire où elles viennent à proximité de la paroi, les extrémités des éléments radiaux se déplacent vers l'aval, leur vitesse périphérique étant sensiblement égale ou de préférence légèrement supérieure à la vitesse périphérique de la surface interne de la paroi perforée..The shaft carrying the advancement members could be mounted with free rotation, the rotation being ensured by the thrust on the advancement organs of the material to be wrung; it is however preferable to drive the shaft in rotation positively, the direction of rotation and the speed of the shaft being such that, in the part of their circular trajectory where they come close to the wall, the ends of the radial elements move downstream, their peripheral speed being substantially equal to or preferably slightly higher than the peripheral speed of the internal surface of the perforated wall.

Selon un autre mode de réalisation les organes d'avancement sont constitués par des éléments montés à rotation libre autour de bouts d'axes solidaires pour former un arbre en zigzag, la ligne générale de l'arbre étant parallèle à la génératrice du tambour. Ceci permet d'utiliser des éléments de longueur radiale identique et d'allonger le tambour de l'essoreuse.According to another embodiment, the advancement members are constituted by elements mounted for free rotation around ends of integral axes to form a zigzag shaft, the general line of the shaft being parallel to the generatrix of the drum. This makes it possible to use elements of identical radial length and to lengthen the drum of the wringer.

L'essoreuse peut avoir indifféremment un axe horizontal, vertical ou oblique. La paroi perforée peut être cylindrique, tronconique ou avoir toute autre forme de directrice, en ligne brisée ou curviligne lui donnant une forme générale cylindro-tronconique, en bobine, en tonneau ou autre. Dans le cas d'une forme tronconique ou cylindro-tronconique le tambour peut être convergent ou divergent de l'amont vers l'aval.The wringer can have either a horizontal, vertical or oblique axis. The perforated wall may be cylindrical, frustoconical or have any other form of director, in a broken or curvilinear line giving it a general cylindro-frustoconical shape, in coil, in barrel or other. In the case of a frustoconical or cylindro-frustoconical shape the drum can be convergent or diverging from upstream to downstream.

Dans le cas d'un arbre oblique celui-ci a de préférence ses deux extrémités chacune à une distance de la paroi perforée proportionnelle au rayon de ladite paroi perforée dans le plan diamétral correspondant et l'extrémité aval est déportée vers l'amont par rapport au sens de rotation de la paroi perforée. Toutefois lorsqu'on désire soumettre la matière à un étirage ou à un cardage,. l'extrémité aval de l'arbre peut être à une distance de la paroi perforée supérieure proportionnellement à celle de l'extrémité amont.In the case of an oblique shaft this preferably has its two ends each at a distance from the perforated wall proportional to the radius of said perforated wall in the corresponding diametrical plane and the downstream end is offset upstream relative in the direction of rotation of the perforated wall. However, when it is desired to subject the material to drawing or carding ,. the downstream end of the shaft may be at a distance from the upper perforated wall propor that of the upstream end.

L'écartement longitudinal des éléments radiaux voisins doit être d'autant plus faible que leur axe de rotation est moins incliné, que l'arc dans lequel les éléments radiaux coopèrent avec la masse de matière est plus faible, c'est-à-dire que l'axe de rotation est plus près de la paroi, et que l'écartement angulaire des éléments radiaux voisins est plus grand. Les éléments radiaux peuvent être disposés sous forme de nappes radiales, éventuellement être constitués par des disques, des rayons présentant une plus ou moins grande élasticité, de masses telles que des brosses ou des rouleaux en mousse, de vis sans fin ou de nappes longitudinales radiales telles que des parois continues, des palettes ou des rateaux.The longitudinal spacing of the neighboring radial elements must be smaller the less their axis of rotation, the lower the arc in which the radial elements cooperate with the mass of material, that is to say that the axis of rotation is closer to the wall, and that the angular spacing of the neighboring radial elements is greater. The radial elements can be arranged in the form of radial plies, possibly consisting of discs, spokes having a greater or lesser elasticity, masses such as brushes or foam rollers, worms or radial longitudinal plies such as continuous walls, pallets or rakes.

L'angle que forme l'axe de rotation de l'organe d'avancement avec l'axe du tambour de l'essoreuse est fonction du produit à traiter et de ses caractéristiques mécaniques ainsi que du débit recherché. Plus cet angle est grand, plus la composante axiale de la vitesse périphérique de l'organe d'avancement est élevée par rapport a la composante diamétrale, mais plus la vitesse périphérique des éléments radiaux de l'organe d'avancement variera dans des limites importantes s'ils sont solidaires du même arbre. Du fait de l'accroissement de la composante axiale, le débit de la matière se trouvera accru. Le débit de l'essoreuse peut, pour une vitesse d'essorage donnée, être également accru en augmentant le nombre d'organes d'avancement agissant sur un tour du tambour. On peut également accroître la vitesse de rotation de la machine mais cela n'est pas toujours possible du point de vue mécanique ou en raison de la résistance mécanique de la matière traitée.The angle formed by the axis of rotation of the advancing member with the axis of the wringer drum is a function of the product to be treated and its mechanical characteristics as well as the desired flow rate. The larger this angle, the higher the axial component of the peripheral speed of the advancing member relative to the diametrical component, but the more the peripheral speed of the radial elements of the advancing member will vary within wide limits. if they are attached to the same tree. Due to the increase in the axial component, the material flow will be increased. The speed of the wringer can, for a given spin speed, also be increased by increasing the number of advancing members acting on one revolution of the drum. It is also possible to increase the speed of rotation of the machine, but this is not always possible from the mechanical point of view or because of the mechanical resistance of the treated material.

L'essoreuse conforme à l'invention peut être utilisée pour l'essorage en continu de pratiquement toutes les matières minérales, animales ou végétales et notamment pour le traitement préalable des matières qui doivent être soumises à une dessiccation par lyophilisation, chauffage, etc. L'essorage mécanique est un moyen énergétiquement économique d' extraction des eaux non fixées comme les eaux de lavage, etc. De plus, avec l'essoreuse conforme à l'invention, la couche de matière est brassée au passage des organes d'avancement, ce qui facilite encore l'élimination de l'eau par rapport à l'essorage classique.The wringer according to the invention can be used for the continuous wringing of practically all mineral, animal or vegetable materials and in particular for preliminary treatment of the materials which must be subjected to drying by lyophilization, heating, etc. Mechanical spinning is an energy-efficient means of extracting loose water such as washing water, etc. In addition, with the wringer according to the invention, the layer of material is stirred in the passage of the advancing members, which further facilitates the elimination of water compared to conventional wringing.

L'invention sera mieux comprise à la lecture de la description de divers modes de réalisation de l'essoreuse conforme à l'invention faite ci-après avec référence aux dessins schématiques ci-annexés dans lesquels

  • La figure 1 est une vue en bout du tambour avec l'organe d'avancement constitué par des disques radiaux; la figure 2 est une vue en coupe de l'essoreuse par II-II de figure 1; la figure 3 est une construction géométrique pour la détermination des rayons des disques constituant les organes d'avancement et du développement angulaire de leur zone d'action; la figure 4 est une vue en plan développée du tambour destinée à expliquer le mode d'action des organes d'avancement; la figure 5 est une vue correspondant à la figure 2 pour un autre mode de réalisation de l'essoreuse et la figure 6 est une vue en coupe par VI-VI de figure 5.
The invention will be better understood on reading the description of various embodiments of the wringer according to the invention made below with reference to the attached schematic drawings in which
  • Figure 1 is an end view of the drum with the advancement member consisting of radial disks; Figure 2 is a sectional view of the wringer by II-II of Figure 1; Figure 3 is a geometric construction for the determination of the radii of the discs constituting the advancement members and the angular development of their area of action; FIG. 4 is a developed plan view of the drum intended to explain the mode of action of the advancement members; FIG. 5 is a view corresponding to FIG. 2 for another embodiment of the wringer and FIG. 6 is a sectional view through VI-VI of FIG. 5.

L'essoreuse comporte,dans les différents modes de réalisation, une paroi de révolution perforée 1 qui est représentée comme une paroi cylindrique, laquelle est entraînée en rotation de façon connue autour de son axe de manière que la force centrifuge s'exerçant sur la matière appliquée contre la paroi soit plusieurs fois supérieure à la force de gravité. La référence 2 désigne les perforations dont seul un petit nombre est représenté.The wringer has, in the various embodiments, a perforated wall of revolution 1 which is represented as a cylindrical wall, which is rotated in a known manner around its axis so that the centrifugal force exerted on the material applied against the wall is several times greater than the force of gravity. Reference 2 designates the perforations of which only a small number is shown.

Dans cette enceinte et dans le mode de réalisation des figures 1 à 4 est monté obliquement par des paliers non représentés,un arbre 3. Dans le mode de réalisation illustré,les points X où l'arrbré 3 recoupe les surfaces d'extrémité du tambour,sont à égale distance de ladite surface. Sur cet arbre sont montés des disques 4 qui pourraient être.remplacés par des tiges radiales, des palettes ou autres selon la nature du matériau à essorer. Les diamètres de ces disques 4 ou les longueurs des tiges ou analogues sont tels que leur extrémité périphérique vienne sensiblement tangenter la surface intérieure de la paroi 1. Comme illustré à la figure 3, la section de cette surface par les plans dans lesquels se déplacent les disques parallèles est, si les points X sont à égales distances de la surface, une ellipse dont le petit axe est égal au diamètre du tambour et le grand axe au même diamètre multiplié par

Figure imgb0001
, a étant l'angle que fait l'arbre 3 avec l'axe du tambour. Sur cette ellipse E (Figure 3) on réporte la trace A de l'axe de l'arbre 3 qui est à une distance r1 du sommet du petit axe de l'ellipse, cette distance r1 et l'angle a déterminant la position de l'arbre dans le tambour. Sur la droite A on porte, à partir du centre O correspondant au centre du disque 41 de rayon r1, des distances égales à
Figure imgb0002
, e étant l'écartement entre deux disques. Ceci donne les points a' , b' ,c' , d' correspondant à la position des points a, b, c, d centres des disques sur l'ellipse d'intersection de la paroi 1 par le plan du disque. La plus courte distance de chacun de ces points à l'ellipse correspond au rayon du disque tangent à la surface intérieure de la paroi, respectivement r2 , r3 , r4 et r5. Si l'épaisseur de la couche de matière à essorer est égale à m , on détermine le développement angulaire selon lequel chaque disque va coopérer avec la matière. Dans la figure 4 on a représenté les disques avec en trait plus épais 5 la partie qui coopère avec la matière. La vitesse périphérique de la surface interne de la paroi 1 étant égale à F, les disques sont entraînés ou tendent à prendre, s'ils sont montés à rotation libre sur l'axe 3 ou si celui-ci est monté à rotation libre, sous l'effet de la poussée de la matière., une vitesse périphérique f qui, au point de tangence avec la paroi, se décompose en une vitesse fp sensiblement égale à F et une composante longitudinale fl dirigée vers l'aval. En fait et comme illustré dans la figure 4,la matière qui a été introduite selon la flèche R vient en contact successivement avec l'extrémité amont de la partie 5 des disques successifs, se déplace en contact avec le disque et est poussée vers l'aval en étant déplacée, à chaque passage au droit des éléments d'avancement, d'une distance ℓ.In this enclosure and in the embodiment of Figures 1 to 4 is mounted obliquely by bearings not shown, a shaft 3. In the illustrated embodiment, the points X where the cross-section 3 intersects the end surfaces of the drum , are equidistant from said surface. On this shaft are mounted discs 4 which could be replaced by radial rods, pallets or the like depending on the nature of the material to be wrung. The diameters of these discs 4 or the lengths of the rods or the like are such that their peripheral end comes to substantially tangent to the interior surface of the wall 1. As illustrated in FIG. 3, the section of this surface by the planes in which the parallel disks is, if the points X are at equal distances from the surface, an ellipse whose minor axis is equal to the diameter of the drum and the major axis to the same diameter multiplied by
Figure imgb0001
 , a being the angle made by the shaft 3 with the axis of the drum. On this ellipse E (Figure 3) we report the trace A of the axis of the tree 3 which is at a distance r 1 from the vertex of the minor axis of the ellipse, this distance r 1 and the angle a determining the position of the shaft in the drum. On the right A we carry, from the center O corresponding to the center of the disc 4 1 of radius r 1 , distances equal to
Figure imgb0002
 , e being the spacing between two discs. This gives the points a ', b', c ', d' corresponding to the position of the points a, b, c, d centers of the discs on the ellipse of intersection of the wall 1 by the plane of the disc. The shortest distance from each of these points to the ellipse corresponds to the radius of the disc tangent to the interior surface of the wall, respectively r 2 , r 3 , r4 and r 5 . If the thickness of the layer of material to be wrung is equal to m, the angular development is determined according to which each disc will cooperate with the material. In Figure 4 there is shown the discs with a thicker line 5 the part which cooperates with the material. The peripheral speed of the internal surface of the wall 1 being equal to F, the discs are driven or tend to set, if they are mounted with free rotation on the axis 3 or if the latter is mounted at free rotation, under the effect of the thrust of the material., a peripheral speed f which, at the point of tangency with the wall, decomposes into a speed f p substantially equal to F and a longitudinal component fl directed downstream . In fact and as illustrated in FIG. 4, the material which has been introduced according to arrow R comes into contact successively with the upstream end of part 5 of the successive discs, moves in contact with the disc and is pushed towards the downstream by being moved, at each passage to the right of the advancing elements, by a distance ℓ.

Dans le mode de réalisation des figures 5 et 6, les disques 6 qui pourraient être remplacés par des tiges radiales, des cylindres plats en mousse, des roues à aubes avec arêtes périphériques des aubes conformées en tonneau, des vis sans fin ayant la même enveloppe,etc. sont montés chacun sur un bout d'arbre 7, les bouts d'arbre successifs étant réunis par des pièces de décalage 8 et ayant tous la même orientation donc se trouvant dans un même plan. Les disques 6 sont donc portés par les axes parallèles d'une pièce support en zigzag. La rigidité mécanique de la pièce support peut résulter soit de l'assemblage rigide entre les pièces 8 et les bouts d'arbre 7 sur lesquels les disques 6 sont montés à rotation libre, soit du fait que les pièces 8 sont supportées par des contreventements non représentés les reliant, en passant entre les disques 6,avec des traverses longitudinales 9 fixées à leurs extrémités sur les piliers supports 10. Les disques 6 peuvent être entraînés en rotation par exemple pour chaque disque depuis une poulie 11 montée sur un arbre axial 12, par une poulie 13 dont il est solidaire et une courroie 14. On est ainsi maître de la vitesse périphérique f de chaque disque en jouant sur le diamètre de la poulie 11 ce qui peut présenter un intérêt technique. Il serait également possible de monter les éléments d'avancement à rotation libre. Enfin il est possible de modifier la nature des éléments d'avancement selon le sens de progression de la matière pour les adapter à la modification de fluidité et de densité de la matière sèche et certains d'entre eux peuvent être des éléments soufflants et/ou chauffants.In the embodiment of Figures 5 and 6, the discs 6 which could be replaced by radial rods, flat foam cylinders, impellers with peripheral edges of the blades shaped in barrel, worms having the same casing , etc. are each mounted on a shaft end 7, the successive shaft ends being joined by offset pieces 8 and all having the same orientation therefore being in the same plane. The discs 6 are therefore carried by the parallel axes of a zigzag support piece. The mechanical rigidity of the support part can result either from the rigid assembly between the parts 8 and the shaft ends 7 on which the discs 6 are mounted for free rotation, or from the fact that the parts 8 are supported by non-bracing shown connecting them, passing between the discs 6, with longitudinal crosspieces 9 fixed at their ends on the support pillars 10. The discs 6 can be rotated for example for each disc from a pulley 11 mounted on an axial shaft 12, by a pulley 13 of which it is integral and a belt 14. It is thus master of the peripheral speed f of each disc by playing on the diameter of the pulley 11 which may be of technical interest. It would also be possible to mount the advancement elements with free rotation. Finally it is possible to modify the nature of the advancement elements according to the direction of progression of the material to adapt them to the modification of fluidity and density dry matter and some of them can be blowing and / or heating elements.

Dans le mode de réalisation de la figure 5, on a prévu un seul disque par bout d'arbre 7 mais il est bien certain que l'on peut combiner les deux modes de réalisation.In the embodiment of Figure 5, there is provided a single disc per shaft end 7 but it is quite certain that we can combine the two embodiments.

Claims (9)

1. Une essoreuse en continu avec une paroi perforée de révolution 1 entraînée en rotation autour de son axe, caractérisée en ce qu'elle comporte des organes d'avancement 4-6 agissant sur la couche de matière, la trajectoire f des organes d'avancement dans la partie où lesdits organes coopèrent avec.la couche m de matière traitée appliquée contre la paroi perforée 1 comportant une composante f dans le plan diamétral et une composante axiale fl dirigée vers l'aval.1. A continuous wringer with a perforated wall of revolution 1 driven in rotation about its axis, characterized in that it comprises advancing members 4-6 acting on the layer of material, the path f of the organs of advancement in the part where said members cooperate with the layer m of treated material applied against the perforated wall 1 comprising a component f in the diametrical plane and an axial component fl directed downstream. 2. Une essoreuse en continu selon la revendication 1, caractérisée en ce que les organes d'avancement sont constitués par des éléments radiaux 4 solidaires d'un arbre 3 monté obliquement à rotation dans le volume interne délimité.par la paroi de révolution 1, la longueur de chaque élément radial étant légèrement inférieure à la.plus petite distance de l'arbre à la paroi perforée.2. A continuous wringer according to claim 1, characterized in that the advancement members are constituted by radial elements 4 secured to a shaft 3 mounted obliquely for rotation in the internal volume delimited by the wall of revolution 1, the length of each radial element being slightly less than the shortest distance from the shaft to the perforated wall. 3. Une essoreuse en continu selon la revendication 2, caractérisée en ce que l'arbre 3 et/ou les organes d'avancement 4 sont montés à rotation libre.3. A continuous wringer according to claim 2, characterized in that the shaft 3 and / or the advancing members 4 are mounted for free rotation. 4. Une essoreuse en continu selon la revendication 2, caractérisée en ce que l'arbre 3 est entraîné en rotation, le sens de rotation et la vitesse de l'arbre étant tels que, dans la partie de leur trajectoire circulaire où elles viennent à proximité de la paroi, les extrémités des élément radiaux se déplacent vers l'aval, leur vitesse périphérique f étant sensiblement égale ou de préférence légèrement supérieure à la vitesse périphérique F de la surface interne de la paroi perforée.4. A continuous wringer according to claim 2, characterized in that the shaft 3 is driven in rotation, the direction of rotation and the speed of the shaft being such that, in the part of their circular path where they come to near the wall, the ends of the radial elements move downstream, their peripheral speed f being substantially equal to or preferably slightly greater than the peripheral speed F of the internal surface of the perforated wall. 5. Une essoreuse en continu selon la revendication 1, caractérisée en ce que les organes d'avancement 6 sont constitués par des éléments montés à rotation libre autour de bouts d'axes 7 solidaires pour former un arbre en zigzag, la ligne générale de l'arbre étant parallèle à la génératrice du tambour 1.5. A continuous wringer according to claim 1, characterized in that the advancement members 6 are constituted by elements mounted for free rotation around ends of axes 7 integral to form a zigzag shaft, the general line of the shaft being parallel to the generator of the drum 1. 6. Une essoreuse en continu selon la revendication 5, caractérisée en ce que les organes d'avancement 6 sont monté à rotation libre.6. A continuous wringer according to claim 5, characterized in that the advancement members 6 are mounted for free rotation. 7. Une essoreuse en continu selon la revendication 5, caractérisée en ce que les organes d'avancement 6 sont entraînés en rotation (11-12-13-14).7. A continuous wringer according to claim 5, characterized in that the advancement members 6 are rotated (11-12-13-14). 8. Une essoreuse en continu selon la revendication 2, caractérisée en ce que l'arbre oblique 3 a ses deux extrémités X-X à une distance de la paroi perforée 1 proportionnelle au rayon de ladite paroi perforée dans le plan diamétral correspondant et l'extrémité aval est déportée vers l'amont par rapport au sens de rotation de la paroi perforée.8. A continuous wringer according to claim 2, characterized in that the oblique shaft 3 has its two ends XX at a distance from the perforated wall 1 proportional to the radius of said perforated wall in the corresponding diametral plane and the downstream end is offset upstream relative to the direction of rotation of the perforated wall. 9. Une essoreuse en continu selon la revendication 2, caractérisée en ce que l'extrémité aval de l'arbre oblique 3 est à une distance de la paroi perforée 1 supérieure proportionnellement à celle de l'extrémité amont.9. A continuous wringer according to claim 2, characterized in that the downstream end of the oblique shaft 3 is at a distance from the perforated wall 1 greater in proportion to that of the upstream end.
EP82400571A 1981-03-31 1982-03-30 Continuously operating centrifuge Expired EP0062576B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82400571T ATE13819T1 (en) 1981-03-31 1982-03-30 CONTINUOUSLY WORKING CENTRIFUGE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8106427A FR2502985A1 (en) 1981-03-31 1981-03-31 CONTINUOUS WIPER
FR8106427 1981-03-31

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EP0062576A1 true EP0062576A1 (en) 1982-10-13
EP0062576B1 EP0062576B1 (en) 1985-06-19

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US (1) US4432148A (en)
EP (1) EP0062576B1 (en)
JP (1) JPS588978A (en)
AT (1) ATE13819T1 (en)
CA (1) CA1166443A (en)
DE (1) DE3264235D1 (en)
DK (1) DK156816C (en)
ES (1) ES8301670A1 (en)
FI (1) FI69574C (en)
FR (1) FR2502985A1 (en)
IE (1) IE52722B1 (en)
IL (1) IL65393A (en)
NO (1) NO154040C (en)
YU (1) YU69782A (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
DE4038954A1 (en) * 1990-12-06 1992-06-11 Wolfgang Eder CENTRIFUGE

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US4565015A (en) * 1983-07-27 1986-01-21 Gala Industries, Inc. Centrifugal pellet dryer
DE3430127A1 (en) * 1984-08-16 1986-02-27 Krauss-Maffei AG, 8000 München DEVICE AND METHOD FOR DRYING PARTICULARLY FINE-GRAINED SOLID PARTICLES
JPS60177017U (en) * 1984-05-02 1985-11-25 ザ・パツク株式会社 packaging box
JPH06255636A (en) * 1993-02-26 1994-09-13 Asahi Breweries Ltd Device for attaching top pat sheet
EP0873286A1 (en) * 1996-01-11 1998-10-28 Interlicense Den Haag B.V. Device and process for the aerobic treatment of organic substances
US7958650B2 (en) * 2006-01-23 2011-06-14 Turatti S.R.L. Apparatus for drying foodstuffs

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DE405373C (en) * 1921-04-19 1924-11-04 Alfred Hernscher Standing screen centrifugal machine that works continuously
FR1057268A (en) * 1952-05-21 1954-03-08 G Pepin Fils Aine Ets Continuous operating wringer
FR1571581A (en) * 1967-06-16 1969-06-20

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US1564665A (en) * 1923-07-16 1925-12-08 Leroy G Gates Centrifugal separator
US3313034A (en) * 1965-08-02 1967-04-11 Leo J Meyer Nut meat de-watering machine
DE3042674A1 (en) * 1980-11-12 1982-06-09 Georg 8201 Kolbermoor Schilp DRAWER CENTRIFUGE

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
DE405373C (en) * 1921-04-19 1924-11-04 Alfred Hernscher Standing screen centrifugal machine that works continuously
FR1057268A (en) * 1952-05-21 1954-03-08 G Pepin Fils Aine Ets Continuous operating wringer
FR1571581A (en) * 1967-06-16 1969-06-20

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4038954A1 (en) * 1990-12-06 1992-06-11 Wolfgang Eder CENTRIFUGE

Also Published As

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ES510932A0 (en) 1983-02-01
FI821108L (en) 1982-10-01
FI69574B (en) 1985-11-29
IE52722B1 (en) 1988-02-03
JPS588978A (en) 1983-01-19
CA1166443A (en) 1984-05-01
FR2502985A1 (en) 1982-10-08
ATE13819T1 (en) 1985-07-15
EP0062576B1 (en) 1985-06-19
DK156816C (en) 1990-02-26
NO154040C (en) 1986-07-09
YU69782A (en) 1986-08-31
FI69574C (en) 1986-03-10
FI821108A0 (en) 1982-03-30
IL65393A0 (en) 1982-05-31
US4432148A (en) 1984-02-21
IE820745L (en) 1982-09-30
DK145382A (en) 1982-10-01
NO154040B (en) 1986-04-01
DE3264235D1 (en) 1985-07-25
IL65393A (en) 1985-03-31
ES8301670A1 (en) 1983-02-01
FR2502985B1 (en) 1983-05-20
NO821054L (en) 1982-10-01
DK156816B (en) 1989-10-09

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