EP0466559A1 - Continuously operating centrifuge - Google Patents

Continuously operating centrifuge Download PDF

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Publication number
EP0466559A1
EP0466559A1 EP91401832A EP91401832A EP0466559A1 EP 0466559 A1 EP0466559 A1 EP 0466559A1 EP 91401832 A EP91401832 A EP 91401832A EP 91401832 A EP91401832 A EP 91401832A EP 0466559 A1 EP0466559 A1 EP 0466559A1
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EP
European Patent Office
Prior art keywords
rotary assembly
box
rotation
shaft
axis
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.)
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EP91401832A
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German (de)
French (fr)
Inventor
Jean Serieys
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.)
Serieys Claire
Serieys Claude
Original Assignee
Serieys Claire
Serieys Claude
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
Application filed by Serieys Claire, Serieys Claude filed Critical Serieys Claire
Publication of EP0466559A1 publication Critical patent/EP0466559A1/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/02—Centrifuges consisting of a plurality of separate bowls rotating round an axis situated between the bowls

Definitions

  • the present invention relates to a centrifuge with continuous operation.
  • the purpose of the centrifuge according to the invention is to separate the products of a mixture in function of their respective density and is of the type of those with a vertical axis of rotation.
  • the centrifuge during its rotation and without requiring it to stop cyclically authorizes the supply of mixture to be separated, the centrifugation, the evacuation of low density products and the evacuation of high density products.
  • the centrifuge according to the invention is essentially characterized in that it comprises a chassis, a rotary assembly around a shaft driven in rotation and guided in the chassis, at least two boxes mounted in articulation in the assembly each rotatable on an axis parallel to the drive shaft of said rotary assembly and means for rotating each case in the rotary assembly to drive each case between a feeding and centrifugation position and a position d evacuation of higher density products, in that each box has an open face oriented towards the inside of said rotary assembly in the feeding and centrifuging position and towards the outside of said rotary assembly in position d evacuation and in that the mixture supply to be separated is constituted by the drive shaft of the rotary assembly which is provided with a tubular portion at the end of which the mixture is introduced and provided with at least two outlets each arranged opposite the open face of at
  • each box is provided with at least one lumen formed perpendicular to the axis of rotation of the rotary assembly, a device for closing off each lumen and a collector for recovering low-level products. density at the output of each light.
  • the centrifuge according to the invention comprises a frame 1 and a rotary assembly 2 mounted in said frame.
  • the chassis 1 is formed by a high structure 1A and a low structure 1B, spaced from one another and receiving between them the rotary assembly 2.
  • the chassis 1 rests on the ground by feet 1C.
  • the rotary assembly 2 is mounted in the chassis 1 by a shaft 3 driven in rotation by any known means, for example, a motor and a pulley belt transmission or the like.
  • This shaft 3 is guided in rotation and locked in translation in the chassis 1.
  • the rotary assembly 2 is fixed on this shaft 3.
  • This rotary assembly comprises at least two boxes 4 intended to be driven in rotation around the shaft 3 and two flanges 5 between which the boxes 4 are mounted.
  • the flanges 5 are secured to the shaft 3 which passes through them by any known means.
  • the centrifuge according to the invention comprises two boxes diametrically opposite with respect to the shaft of the rotary assembly 2 without this being limiting. It is however essential that during the rotation the load is centered to avoid any creation of imbalance.
  • the centrifuge as shown is provided with a supply of mixture to be separated.
  • This supply consists of the shaft 3 for rotating the rotary assembly 2 which is provided for this purpose with a tubular portion 3A at the end of which the mixture is introduced and provided with at least two outlets 3B d mixture supply disposed each opposite at least one box 4.
  • centrifuge boxes are of preferably prismatic in shape and have a completely open face 4A opposite which the outlets 3B of the tubular portion 3A of the shaft 3 are arranged.
  • the number of outputs 3B preferably corresponds to the number of boxes 3 with which the rotary assembly 2 is provided, or else a multiple of this number.
  • the tubular portion 3A of the shaft 3 is terminated by a T-shaped pipe defining the supply outlets 3B. This tubular portion 3A is also driven in rotation at the same angular speed as the assembly 2.
  • the tubular portion 3A is connected to a supply conduit 3C fixed at the level of a guide bearing mounted in the chassis 1.
  • the boxes 4 are preferably cubic in shape and their face 4A is oriented towards the inside of the rotary assembly 2 during centrifugation.
  • the boxes 4 of the rotary assembly 2 of the centrifuge according to the invention are intended to be movable in the rotary assembly 2 between a position of centrifugation and supply of mixture and a position of discharge of the products of the mixture in addition. high density.
  • each box 4 is mounted in articulation in the rotary assembly 2 on an axis 7 parallel to the drive shaft 3 of said rotary assembly.
  • the centrifuge is provided with rotational drive means of each box between the feed and centrifugation position and the discharge position.
  • Each box 4 is mounted between the flanges 5 of the rotary assembly 2 on an axis 7 materialized by a shaft 8 or two portions of shaft 8 coaxial.
  • each box is articulated by two portions of shaft 8 coaxial which each is fixed at the end to the box and by its other end mounted in a flange 5.
  • the shaft portions 8 are secured by any known means to the casing 4, for example, by welding or the like and are mounted in the flanges 5 preferably in rotation guide bearings.
  • each box is articulated by a shaft 8 which passes right through it to be mounted in the flanges 5.
  • the boxes 4 are cubic in shape with two faces parallel to the flanges 5 of the assembly 2 and which receive the shaft portions 8.
  • the open face 4A is parallel to the shaft 3, is disposed facing this shaft in the centrifugation and feed position and is located outside the rotary assembly 2 in the discharge position and preferably at 180 ° relative to the centrifugation and feeding position.
  • Axis 7 is arranged in a plane perpendicular and median to bottom 4B of the box. This axis 7 is preferably centered relative to the box 4 so as to limit the displacement of loads when it changes position.
  • the axis 7 is eccentric relative to the box 4, that is to say, the axis 7 is close to the bottom 4B of the box 4 and is arranged in a plane perpendicular and median to said bottom 4B, in this case, the centrifugal force is greater.
  • the face 4A of the boxes 4 is oriented towards the inside of the rotary assembly 2 and the said boxes receive, through the outlet 3B from the tubular portion 3A of the shaft 3, the mixture to be centrifuged.
  • This supply takes place while the rotary assembly 2 is rotated.
  • the outlet 3B of the tubular portion 3A penetrates slightly into the box so that the mixture is well introduced into the latter.
  • the mixture is brought to the outlets 3B by pumping or else under the effect of the vacuum created by the rotation of the assembly 2. Under the effect of centrifugal force, the mixture comes into the bottom 4B of the box 4, that is to say, opposite the open face 4A.
  • the feeding takes place during the rotation of the rotary assembly and stops when the desired quantity of mixture is reached.
  • the rotation continues to enter the centrifugation phase.
  • At least one side wall 4C of the box is provided with at least one lumen 9 formed perpendicular to the axis of rotation of the assembly 2, by a closure device 10 for each lumen 9 and by a collector 11 for recovering the products leaving each light 9.
  • a single lumen 9 is formed in a single side wall 4C of the box.
  • the side wall 4C provided with the light 9 is that oriented at the rear of the box, considering the direction of rotation of the assembly 2 in order to facilitate the evacuation of the products.
  • the lumen 9 is formed in the middle part of the side wall 4C and extends near the bottom 4B of the box towards the open face 4A.
  • the products of the mixture under the effect of centrifugation are arranged in successive layers along planes parallel to the axis of rotation of the rotary assembly 2.
  • the light 9 is opened by a quantity determined according to the quantity of the products low density. This opening of the light 9 is variable depending on the mixture treated.
  • the shutter 10 of the light 9 can therefore occupy variable positions as a function of the desired opening.
  • This adjustment of the aperture of the light 9 can be determined by optical sensors or the like as a function of the quantity of low density products.
  • the closure device 10 as shown in FIG. 4 is constituted by a plug 12, a jack 13 secured to the box 4 and whose rod is secured to the plug 12 and a tube 14 for sliding guide of the plug 12 fixed to the box 4 and provided along two generators of slots, one of which is facing the light 9 of said box.
  • the cylinder 13 is arranged coaxially with the guide tube 14.
  • this cylinder 13 is arranged parallel to said guide tube 14.
  • this shutter device 10 is disposed inside the box 4.
  • the collector 11 is preferably closed and is inclined towards the outside of the rotary assembly 2.
  • a rotary hearth 15 is arranged.
  • the latter is placed in the plane of the lower flange 5 of the rotary assembly 2 and its function will be stated further.
  • the collector 11 for discharging low density products opens out below the level of this rotating hearth 15.
  • the products of the low density mixture have been evacuated, the products of higher density must be evacuated by placing the boxes in the evacuation position while continuing the rotary drive of the rotary assembly 2.
  • the evacuation boxes of high density products are made under the effect of centrifugal force.
  • the drive means in rotation of each box between its feeding and centrifuging position and its discharge position are constituted, according to a preferred embodiment shown in Figures 1, 2 and 3, by a toothed crown 20 fixed in translation on the drive shaft 3 of the rotary assembly 2 and guided in rotation by a pinion 21 fixed in rotation and in translation relative to the axis 7 of rotation of each box 4 and meshing with the ring gear 20 and by at least one member 22 for driving the crown 20 in rotation on the shaft 3.
  • the member 22 for rotating the crown 20 is integral with the rotary assembly 2.
  • This member 22 is preferably constituted by two double-acting cylinders, the rod of which is engaged with the crown 20.
  • the diameter ratios between the crown 20 and the pinions 21 are defined.
  • the pinions 21 are of a diameter less than that of the crown 20, for example, two or three times smaller.
  • the member 22 includes two double-acting cylinders to ensure sufficient torque to the crown 20 and to balance the loads. Thus, the actuation of the member 22 causes the boxes 4 to rotate 180 °. It goes without saying that other means may be suitable for ensuring the rotation of the boxes 4 on their axis 7.
  • each box is provided on the edge of a side wall 4C with a notch 24 for passage of the outlet 3B of the tubular portion 3A of the shaft 3.
  • This notch 24 is produced on the edge of the wall 4C limiting the open face 4A of the box.
  • a calibration grid 25 Inside each box 4 and parallel to the shaft 3 is mounted a calibration grid 25. In the unloading position, the open face 4A is oriented towards the outside of the rotary assembly 2, the high density products which were in contact with the bottom 4B of the box are evacuated by centrifugal force.
  • the centrifuge is equipped concentrically with the rotary assembly 2 and perpendicular to the rotary hearth 15, with a jet breaker wall 26 against which the products of higher density are discharged and which makes it possible to obtain a division of those -this at the outlet of the boxes.
  • the products of higher density fall on the rotating floor 15 which discharges them.
  • the jacks forming the member 22 for driving the crown 20 and the jacks 13 for the shutter devices 10 are supplied by pipes passing through the shaft 3 and are connected to a pump by rotary joints mounted on the said shaft. .
  • the centrifuge according to the invention is made of materials very resistant to impact and corrosion.
  • the centrifuge according to the invention finds a particular application in the treatment of sludge to separate water from solids but it goes without saying that other applications can be made of the centrifuge. Feeding cycles, centrifugation, evacuation of low density products then high density products can be automated using sensors, timing measurement and more.
  • the centrifuge can receive any type of element making it possible to optimize its performance, for example, a camber giving better aerodynamics and the like.

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  • Centrifugal Separators (AREA)

Abstract

The centrifuge according to the invention is essentially characterised in that it comprises a frame (1), an assembly (2) able to rotate about a rotary shaft (3) driven and guided in the frame (1), at least two chambers (4) each mounted pivottably in the rotary assembly (2) on a spindle (7) parallel to the drive shaft (3) of said rotary assembly and means for rotating each chamber (4) in the rotary assembly (2) in order to move each chamber between a position for feeding and centrifuging and a position for discharging the densest products, in that each chamber (4) is provided with an open side (4A) facing towards the inside of said rotary assembly in the feeding and centrifuging position and away from said rotary assembly in the discharging position and in that the feeding system for the mixture to be separated is formed by the shaft (3), which is fitted with a tubular portion (3A) into the end of which the mixture is introduced and which is provided with at least two outlets (3B) each arranged so as to face the open side (4A) of at least one chamber (4). <IMAGE>

Description

La présente invention a pour objet une centrifugeuse à fonctionnement continu.
La centrifugeuse selon l'invention a pour but la séparation des produits d'un mélange en fontion de leur densité respective et est du type de celles à axe de rotation vertical.The present invention relates to a centrifuge with continuous operation.
The purpose of the centrifuge according to the invention is to separate the products of a mixture in function of their respective density and is of the type of those with a vertical axis of rotation.

La centrifugeuse au cours de sa rotation et sans nécessiter l'arrêt de celle-ci autorise de façon cyclique l'alimentation en mélange à séparer, la centrifugation, l'évacuation des produits de faible densité et l'évacuation des produits de forte densité. A cet effet, la centrifugeuse selon l'invention se caractérise essentiellement en ce qu'elle comporte un châssis, un ensemble rotatif autour d'un arbre entraîné en rotation et guidé dans le châssis, au moins deux caissons montés en articulation dans l'ensemble rotatif chacun sur un axe parallèle à l'arbre d'entraînement du dit ensemble rotatif et des moyens d'entraînement en rotation de chaque caisson dans l'ensemble rotatif pour entraîner chaque caisson entre une position d'alimentation et de centrifugation et une position d'évacuation des produits de plus forte densité, en ce que chaque caisson est doté d'une face ouverte orientée vers l'intérieur du dit ensemble rotatif en position d'alimentation et de centrifugation et vers l'extérieur du dit ensemble rotatif en position d'évacuation et en ce que l'alimentation en mélange à séparer est constituée par l'arbre d'entraînement de l'ensemble rotatif qui est doté d'une portion tubulaire en extrémité de laquelle est introduit le mélange et pourvue d'au moins deux sorties disposées chacune en regard de la face ouverte d'au moins un caisson.The centrifuge during its rotation and without requiring it to stop cyclically authorizes the supply of mixture to be separated, the centrifugation, the evacuation of low density products and the evacuation of high density products. To this end, the centrifuge according to the invention is essentially characterized in that it comprises a chassis, a rotary assembly around a shaft driven in rotation and guided in the chassis, at least two boxes mounted in articulation in the assembly each rotatable on an axis parallel to the drive shaft of said rotary assembly and means for rotating each case in the rotary assembly to drive each case between a feeding and centrifugation position and a position d evacuation of higher density products, in that each box has an open face oriented towards the inside of said rotary assembly in the feeding and centrifuging position and towards the outside of said rotary assembly in position d evacuation and in that the mixture supply to be separated is constituted by the drive shaft of the rotary assembly which is provided with a tubular portion at the end of which the mixture is introduced and provided with at least two outlets each arranged opposite the open face of at least one box.

Suivant une autre caractéristique, chaque caisson est doté d'au moins une lumière ménagée perpendiculairement à l'axe de rotation de l'ensemble rotatif, d'un dispositif d'obturation de chaque lumière et d'un collecteur de récupération des produits de faible densité en sortie de chaque lumière.According to another characteristic, each box is provided with at least one lumen formed perpendicular to the axis of rotation of the rotary assembly, a device for closing off each lumen and a collector for recovering low-level products. density at the output of each light.

D'autres avantages et caractéristiques apparaitront dans la description d'une forme de réalisation de l'invention représentée aux dessins annexés donnés à titre d'exemple non limitatif en lesquels :

  • la figure 1 est une vue de face de la centrifugeuse selon l'invention en position d'alimentation en mélange et de centrifugation,
  • la figure 2 est une demi-vue de la centrifugeuse en position d'évacuation des produits de forte densité,
  • la figure 3 est une vue de dessus en coupe selon la ligne A/A de la figure 1,
  • la figure 4 est une vue de détail de la centrifugeuse.
Other advantages and characteristics will appear in the description of an embodiment of the invention shown in the appended drawings given by way of nonlimiting example in which:
  • FIG. 1 is a front view of the centrifuge according to the invention in the mixture supply and centrifugation position,
  • FIG. 2 is a half view of the centrifuge in the position for discharging the products of high density,
  • FIG. 3 is a top view in section along the line A / A of FIG. 1,
  • Figure 4 is a detail view of the centrifuge.

Telle que représentée en figure 1, la centrifugeuse selon l'invention comporte un châssis 1 et un ensemble rotatif 2 monté dans le dit châssis.As shown in Figure 1, the centrifuge according to the invention comprises a frame 1 and a rotary assembly 2 mounted in said frame.

Le châssis 1 est formé d'une structure haute 1A et d'une structure basse 1B, espacées l'une de l'autre et recevant entre elles l'ensemble rotatif 2. Le châssis 1 repose au sol par des pieds 1C.The chassis 1 is formed by a high structure 1A and a low structure 1B, spaced from one another and receiving between them the rotary assembly 2. The chassis 1 rests on the ground by feet 1C.

L'ensemble rotatif 2 est monté dans le châssis 1 par un arbre 3 entraîné en rotation par tout moyen connu, par exemple, un moteur et une transmission courroie poulie ou autres.
Cet arbre 3 est guidé en rotation et bloqué en translation dans le châssis 1. L'ensemble rotatif 2 est fixé sur cet arbre 3.
Cet ensemble rotatif comporte au moins deux caissons 4 destinés à être entraînés en rotation autour de l'arbre 3 et deux flasques 5 entre lesquels sont montés les caissons 4.
Les flasques 5 sont solidarisés à l'arbre 3 qui les traverse par tout moyen connu.The rotary assembly 2 is mounted in the chassis 1 by a shaft 3 driven in rotation by any known means, for example, a motor and a pulley belt transmission or the like.
This shaft 3 is guided in rotation and locked in translation in the chassis 1. The rotary assembly 2 is fixed on this shaft 3.
This rotary assembly comprises at least two boxes 4 intended to be driven in rotation around the shaft 3 and two flanges 5 between which the boxes 4 are mounted.
The flanges 5 are secured to the shaft 3 which passes through them by any known means.

Préférentiellement, la centrifugeuse selon l'invention comporte deux caissons diamétralement opposés par rapport à l'arbre de l'ensemble rotatif 2 sans que ceci soit limitatif. Il est toutefois essentiel qu'au cours de la rotation la charge soit centrée pour éviter toute création de balourd.Preferably, the centrifuge according to the invention comprises two boxes diametrically opposite with respect to the shaft of the rotary assembly 2 without this being limiting. It is however essential that during the rotation the load is centered to avoid any creation of imbalance.

La centrifugeuse telle que représentée est pourvue d'une alimentation en mélange à séparer.
Cette alimentation est constituée par l'arbre 3 d'entraînement en rotation de l'ensemble rotatif 2 qui est doté à cet effet d'une portion tubulaire 3A en extrémité de laquelle le mélange est introduit et dotée d'au moins deux sorties 3B d'alimentation en mélange disposée chacune en regard d'au moins un caisson 4.The centrifuge as shown is provided with a supply of mixture to be separated.
This supply consists of the shaft 3 for rotating the rotary assembly 2 which is provided for this purpose with a tubular portion 3A at the end of which the mixture is introduced and provided with at least two outlets 3B d mixture supply disposed each opposite at least one box 4.

Les dits caissons de la centrifugeuse selon l'invention sont de préférence de forme prismatique et présentent une face 4A totalement ouverte en regard de laquelle sont disposées les sorties 3B de la portion tubulaire 3A de l'arbre 3.
Le nombre de sorties 3B correspond de préférence au nombre de caissons 3 dont est doté l'ensemble rotatif 2 ou bien un multiple de ce nombre.The so-called centrifuge boxes according to the invention are of preferably prismatic in shape and have a completely open face 4A opposite which the outlets 3B of the tubular portion 3A of the shaft 3 are arranged.
The number of outputs 3B preferably corresponds to the number of boxes 3 with which the rotary assembly 2 is provided, or else a multiple of this number.

La portion tubulaire 3A de l'arbre 3 est terminée par une conduite en T définissant les sorties 3B d'alimentation.
Cette portion tubulaire 3A est également animée en rotation à la même vitesse angulaire que l'ensemble 2.
La portion tubulaire 3A est raccordée à un conduit d'alimentation 3C fixe au niveau d'un palier de guidage monté dans le châssis 1.The tubular portion 3A of the shaft 3 is terminated by a T-shaped pipe defining the supply outlets 3B.
This tubular portion 3A is also driven in rotation at the same angular speed as the assembly 2.
The tubular portion 3A is connected to a supply conduit 3C fixed at the level of a guide bearing mounted in the chassis 1.

Les caissons 4 sont préférentiellement de forme cubique et leur face 4A est orientée vers l'intérieur de l'ensemble rotatif 2 lors de la centrifugation.
Les caissons 4 de l'ensemble rotatif 2 de la centrifugeuse selon l'invention sont destinés à être mobiles dans l'ensemble rotatif 2 entre une position de centrifugation et d'alimentation en mélange et une position d'évacuation des produits du mélange de plus forte densité.The boxes 4 are preferably cubic in shape and their face 4A is oriented towards the inside of the rotary assembly 2 during centrifugation.
The boxes 4 of the rotary assembly 2 of the centrifuge according to the invention are intended to be movable in the rotary assembly 2 between a position of centrifugation and supply of mixture and a position of discharge of the products of the mixture in addition. high density.

A cet effet, chaque caisson 4 est monté en articulation dans l'ensemble rotatif 2 sur un axe 7 parallèle à l'arbre 3 d'entraînement du dit ensemble rotatif.To this end, each box 4 is mounted in articulation in the rotary assembly 2 on an axis 7 parallel to the drive shaft 3 of said rotary assembly.

La centrifugeuse est dotée de moyens d'entraînement en rotation de chaque caisson entre la position d'alimentation et de centrifugation et la position d'évacuation.
Chaque caisson 4 est monté entre les flasques 5 de l'ensemble rotatif 2 sur un axe 7 matérialisé par un arbre 8 ou deux portions d'arbre 8 coaxiales.The centrifuge is provided with rotational drive means of each box between the feed and centrifugation position and the discharge position.
Each box 4 is mounted between the flanges 5 of the rotary assembly 2 on an axis 7 materialized by a shaft 8 or two portions of shaft 8 coaxial.

Selon une forme préférentielle de réalisation, chaque caisson est articulé par deux portions d'arbre 8 coaxiales qui chacune est fixée en extrémité au caisson et par son autre extrémité montée dans un flasque 5.
Les portions d'arbre 8 sont solidarisées par tout moyen connu au caisson 4, par exemple, par soudure ou autres et sont montées dans les flasques 5 de préférence dans des paliers de guidage en rotation.According to a preferred embodiment, each box is articulated by two portions of shaft 8 coaxial which each is fixed at the end to the box and by its other end mounted in a flange 5.
The shaft portions 8 are secured by any known means to the casing 4, for example, by welding or the like and are mounted in the flanges 5 preferably in rotation guide bearings.

Selon une autre forme de réalisation, chaque caisson est articulé par un arbre 8 qui le traverse de part en part pour se monter dans les flasques 5.According to another embodiment, each box is articulated by a shaft 8 which passes right through it to be mounted in the flanges 5.

Les caissons 4 sont de forme cubique avec deux faces parallèles aux flasques 5 de l'ensemble 2 et qui reçoivent les portions d'arbre 8.
La face ouverte 4A est parallèle à l'arbre 3, est disposée face à cet arbre en position de centrifugation et d'alimentation et se trouve à l'extérieur de l'ensemble rotatif 2 en position d'évacuation et de préférence à 180 ° par rapport à la position de centrifugation et d'alimentation.The boxes 4 are cubic in shape with two faces parallel to the flanges 5 of the assembly 2 and which receive the shaft portions 8.
The open face 4A is parallel to the shaft 3, is disposed facing this shaft in the centrifugation and feed position and is located outside the rotary assembly 2 in the discharge position and preferably at 180 ° relative to the centrifugation and feeding position.

L'axe 7 est disposé dans un plan perpendiculaire et médian au fond 4B du caisson.
Cet axe 7 est préférentiellement centré par rapport au caisson 4 en sorte de limiter les déplacements de charges lors de son changement de position.Axis 7 is arranged in a plane perpendicular and median to bottom 4B of the box.
This axis 7 is preferably centered relative to the box 4 so as to limit the displacement of loads when it changes position.

Tel que représenté en figures 1, 2 et 3, l'axe 7 est excentré par rapport au caisson 4, c'est-à-dire, que l'axe 7 est proche du fond 4B du caisson 4 et est disposé dans un plan perpendiculaire et médian au dit fond 4B, dans ce cas, la force centrifuge est plus grande.As shown in Figures 1, 2 and 3, the axis 7 is eccentric relative to the box 4, that is to say, the axis 7 is close to the bottom 4B of the box 4 and is arranged in a plane perpendicular and median to said bottom 4B, in this case, the centrifugal force is greater.

En position d'alimentation et de centrifugation la face 4A des caissons 4 est orientée vers l'intérieur de l'ensemble rotatif 2 et les dits caissons reçoivent par la sortie 3B de la portion tubulaire 3A de l'arbre 3 le mélange à centrifuger.
Cette alimentation s'effectue alors que l'ensemble rotatif 2 est entraîné en rotation.
La sortie 3B de la portion tubulaire 3A pénètre légèrement dans le caisson afin que le mélange soit bien introduit dans ce dernier.
Le mélange est amené vers les sorties 3B par pompage ou bien encore sous l'effet da la dépression créée par la rotation de l'ensemble 2.
Sous l'effet de la force centrifuge, le mélange vient dans le fond 4B du caisson 4, c'est-à-dire, à l'opposé de la face ouverte 4A.
Par le phénomène de centrifugation, les produits de plus forte densité sont disposés le plus à l'extérieur dans le caisson 4 en considérant l'ensemble rotatif 2.In the feed and centrifugation position, the face 4A of the boxes 4 is oriented towards the inside of the rotary assembly 2 and the said boxes receive, through the outlet 3B from the tubular portion 3A of the shaft 3, the mixture to be centrifuged.
This supply takes place while the rotary assembly 2 is rotated.
The outlet 3B of the tubular portion 3A penetrates slightly into the box so that the mixture is well introduced into the latter.
The mixture is brought to the outlets 3B by pumping or else under the effect of the vacuum created by the rotation of the assembly 2.
Under the effect of centrifugal force, the mixture comes into the bottom 4B of the box 4, that is to say, opposite the open face 4A.
By the centrifugation phenomenon, the products with the highest density are placed outermost in the box 4 considering the rotary assembly 2.

L'alimentation se fait pendant la rotation de l'ensemble rotatif et s'arrête lorsque la quantité de mélange désirée est atteinte. La rotation se poursuit pour entrer dans la phase de centrifugation.The feeding takes place during the rotation of the rotary assembly and stops when the desired quantity of mixture is reached. The rotation continues to enter the centrifugation phase.

Après la centrifugation, les produits de plus faible densité sont évacués.
A cet effet, au moins une paroi latérale 4C du caisson est dotée d'au moins une lumière 9 ménagée perpendiculairement à l'axe de rotation de l'ensemble 2, par un dispositif d'obturation 10 de chaque lumière 9 et par un collecteur 11 de récupération des produits en sortie de chaque lumière 9.
Préférentiellement, une seule lumière 9 est ménagée dans une seule paroi latérale 4C du caisson.After centrifugation, the products of lower density are removed.
To this end, at least one side wall 4C of the box is provided with at least one lumen 9 formed perpendicular to the axis of rotation of the assembly 2, by a closure device 10 for each lumen 9 and by a collector 11 for recovering the products leaving each light 9.
Preferably, a single lumen 9 is formed in a single side wall 4C of the box.

De préférence, la paroi latérale 4C dotée de la lumière 9 est celle orientée à l'arrière du caisson en considérant le sens de rotation de l'ensemble 2 afin de faciliter l'évacuation des produits.
La lumière 9 est ménagée en partie médiane de la paroi latérale 4C et s'étend à proximité du fond 4B du caisson vers la face ouverte 4A.
Les produits du mélange sous l'effet de la centrifugation se disposent en couches successives suivant des plans parallèles à l'axe de rotation de l'ensemble rotatif 2.Preferably, the side wall 4C provided with the light 9 is that oriented at the rear of the box, considering the direction of rotation of the assembly 2 in order to facilitate the evacuation of the products.
The lumen 9 is formed in the middle part of the side wall 4C and extends near the bottom 4B of the box towards the open face 4A.
The products of the mixture under the effect of centrifugation are arranged in successive layers along planes parallel to the axis of rotation of the rotary assembly 2.

Lorsque la centrifugation est terminée, la lumière 9 est ouverte d'une quantité déterminée en fonction de la quantité des produits de faible densité.
Cette ouverture de la lumière 9 est variable en fonction du mélange traité.When the centrifugation is finished, the light 9 is opened by a quantity determined according to the quantity of the products low density.
This opening of the light 9 is variable depending on the mixture treated.

Le dispositif d'obturation 10 de la lumière 9 peut donc occuper des positions variables en fonction de l'ouverture désirée. Ce réglage de l'ouverture de la lumière 9 peut être déterminé par des capteurs optiques ou autres en fonction de la quantité de produits de faible densité.The shutter 10 of the light 9 can therefore occupy variable positions as a function of the desired opening. This adjustment of the aperture of the light 9 can be determined by optical sensors or the like as a function of the quantity of low density products.

Le dispositif d'obturation 10 tel que représenté en figure 4, est constitué par un bouchon 12, un vérin 13 solidaire du caisson 4 et dont la tige est solidaire du bouchon 12 et un tube 14 de guidage en coulissement du bouchon 12 fixé au caisson 4 et doté suivant deux génératrices de fentes dont une est en regard de la lumière 9 du dit caisson.
Tel que représenté en figures 1, 2 et 3, le vérin 13 est disposé coaxialement au tube 14 de guidage.The closure device 10 as shown in FIG. 4, is constituted by a plug 12, a jack 13 secured to the box 4 and whose rod is secured to the plug 12 and a tube 14 for sliding guide of the plug 12 fixed to the box 4 and provided along two generators of slots, one of which is facing the light 9 of said box.
As shown in Figures 1, 2 and 3, the cylinder 13 is arranged coaxially with the guide tube 14.

Selon la figure 4, ce vérin 13 est disposé parallèlement au dit tube 14 de guidage.
Préférentiellement, ce dispositif d'obturation 10 est disposé à l'intérieur du caisson 4.
Le collecteur 11 est préférentiellement fermé et est incliné vers l'extérieur de l'ensemble rotatif 2.According to Figure 4, this cylinder 13 is arranged parallel to said guide tube 14.
Preferably, this shutter device 10 is disposed inside the box 4.
The collector 11 is preferably closed and is inclined towards the outside of the rotary assembly 2.

Avantageusement, concentriquement à l'ensemble rotatif 2 est disposée une sole tournante 15.
Cette dernière est placée dans le plan du flasque 5 inférieur de l'ensemble rotatif 2 et sa fonction sera énoncée plus avant. Le collecteur 11 d'évacuation des produits de faible densité débouche en dessous du niveau de cette sole tournante 15.Advantageously, concentrically with the rotary assembly 2, a rotary hearth 15 is arranged.
The latter is placed in the plane of the lower flange 5 of the rotary assembly 2 and its function will be stated further. The collector 11 for discharging low density products opens out below the level of this rotating hearth 15.

Une fois que les produits du mélange de faible densité ont été évacués, les produits de plus forte densité doivent être évacués en plaçant les caissons en position d'évacuation tout en poursuivant l'entraînement en rotation de l'ensemble rotatif 2. L'évacuation des caissons des produits de forte densité s'effectue sous l'effet de la force centrifuge.Once the products of the low density mixture have been evacuated, the products of higher density must be evacuated by placing the boxes in the evacuation position while continuing the rotary drive of the rotary assembly 2. The evacuation boxes of high density products are made under the effect of centrifugal force.

Les moyens d'entrainement en rotation de chaque caisson entre sa position d'alimentation et de centrifugation et sa position d'évacuation sont constitués, selon une forme préférentielle de réalisation représentée aux figures 1, 2 et 3, par une couronne dentée 20 fixée en translation sur l'arbre 3 d'entraînement de l'ensemble rotatif 2 et guidée en rotation par un pignon 21 fixé en rotation et en translation par rapport à l'axe 7 de rotation de chaque caisson 4 et engrenant avec la couronne dentée 20 et par au moins un organe 22 d'entraînement en rotation de la couronne 20 sur l'arbre 3.
L'organe 22 d'entrainement en rotation de la couronne 20 est solidaire de l'ensemble rotatif 2.
Cet organe 22 est préférentiellement constitué par deux vérins double effet dont leur tige est en prise avec la couronne 20.The drive means in rotation of each box between its feeding and centrifuging position and its discharge position are constituted, according to a preferred embodiment shown in Figures 1, 2 and 3, by a toothed crown 20 fixed in translation on the drive shaft 3 of the rotary assembly 2 and guided in rotation by a pinion 21 fixed in rotation and in translation relative to the axis 7 of rotation of each box 4 and meshing with the ring gear 20 and by at least one member 22 for driving the crown 20 in rotation on the shaft 3.
The member 22 for rotating the crown 20 is integral with the rotary assembly 2.
This member 22 is preferably constituted by two double-acting cylinders, the rod of which is engaged with the crown 20.

Lorsque l'ensemble rotatif tourne l'organe 22 entraîne en rotation la couronne 20 à la même vitesse angulaire que l'ensemble rotatif 2, les pignons 21 tournent également par rapport à l'arbre 3.
Lorsque l'organe 22 est actionné la couronne 20 a un mouvement de rotation relatif par rapport à l'ensemble rotatif 2, ce qui provoque la rotation des pignons 21 et donc des caissons.When the rotary assembly rotates the member 22 rotates the crown 20 at the same angular speed as the rotary assembly 2, the pinions 21 also rotate relative to the shaft 3.
When the member 22 is actuated the crown 20 has a relative rotational movement relative to the rotary assembly 2, which causes the rotation of the pinions 21 and therefore of the boxes.

En fonction de la rapidité de rotation désirée, les rapports de diamètre entre la couronne 20 et les pignons 21 sont définis.
De préférence, les pignons 21 sont d'un diamètre inférieur à celui de la couronne 20, par exemple, deux ou trois fois plus petit.Depending on the desired speed of rotation, the diameter ratios between the crown 20 and the pinions 21 are defined.
Preferably, the pinions 21 are of a diameter less than that of the crown 20, for example, two or three times smaller.

L'organe 22 comporte deux vérins double effet pour assurer un couple de rotation suffisant à la couronne 20 et équilibrer les charges.
Ainsi, l'actionnement de l'organe 22 provoque une rotation de 180° des caissons 4.
Il va de soi que d'autres moyens peuvent convenir pour assurer la rotation des caissons 4 sur leur axe 7.The member 22 includes two double-acting cylinders to ensure sufficient torque to the crown 20 and to balance the loads.
Thus, the actuation of the member 22 causes the boxes 4 to rotate 180 °.
It goes without saying that other means may be suitable for ensuring the rotation of the boxes 4 on their axis 7.

En sorte de permettre cette rotation, chaque caisson est doté sur le bord d'une paroi latérale 4C d'une encoche 24 de passage de la sortie 3B de la portion tubulaire 3A de l'arbre 3.
Cette encoche 24 est réalisée sur le bord de la paroi 4C limitant la face ouverte 4A du caisson.
A l'intérieur de chaque caisson 4 et parallèlement à l'arbre 3 est montée une grille de calibrage 25.
En position de déchargement la face ouverte 4A est orientée vers l'extérieur de l'ensemble rotatif 2, les produits de forte densité qui étaient en contact avec le fond 4B du caisson sont évacués par la force centrifuge.So as to allow this rotation, each box is provided on the edge of a side wall 4C with a notch 24 for passage of the outlet 3B of the tubular portion 3A of the shaft 3.
This notch 24 is produced on the edge of the wall 4C limiting the open face 4A of the box.
Inside each box 4 and parallel to the shaft 3 is mounted a calibration grid 25.
In the unloading position, the open face 4A is oriented towards the outside of the rotary assembly 2, the high density products which were in contact with the bottom 4B of the box are evacuated by centrifugal force.

Préférentiellement, la centrifugeuse est équipée de façon concentrique à l'ensemble rotatif 2 et perpendiculairement à la sole tournante 15, d'une paroi brise jet 26 contre laquelle sont évacués les produits de plus forte densité et qui permet d'obtenir une division de ceux-ci en sortie des caissons.
Les produits de plus forte densité tombent sur la sole tournante 15 qui les évacue.Preferably, the centrifuge is equipped concentrically with the rotary assembly 2 and perpendicular to the rotary hearth 15, with a jet breaker wall 26 against which the products of higher density are discharged and which makes it possible to obtain a division of those -this at the outlet of the boxes.
The products of higher density fall on the rotating floor 15 which discharges them.

Il va de soi que lors de l'évacuation des produits de forte densité, il n'y a pas d'alimentation en mélange.
L'alimentation des vérins 13, des dispositifs d'obturation 10, des lumières 9 se fait par des flexibles permettant la rotation des caissons 4.It goes without saying that during the evacuation of high density products, there is no supply of mixture.
The cylinders 13, the shutter devices 10, the lights 9 are supplied by hoses allowing the rotation of the boxes 4.

Les vérins formant l'organe 22 d'entraînement de la couronne 20 et les vérins 13 des dispositifs d'obturation 10 sont alimentés par des conduites passant dans l'arbre 3 et sont connectés à une pompe par des joints tournants montés sur le dit arbre.The jacks forming the member 22 for driving the crown 20 and the jacks 13 for the shutter devices 10 are supplied by pipes passing through the shaft 3 and are connected to a pump by rotary joints mounted on the said shaft. .

La centrifugeuse selon l'invention est réalisée en des matériaux très résistants aux chocs et à la corrosion.
La centrifugeuse selon l'invention trouve une application particulière dans le traitement des boues pour séparer l'eau des solides mais il va de soi que d'autres applications peuvent être faites de la centrifugeuse.
Les cycles d'alimentation, de centrifugation, d'évacuation des produits de faible densité puis des produits de forte densité peuvent être automatisés à l'aide de capteurs, de mesure de temporisation et autres.
La centrifugeuse pourra recevoir tout type d'élément permettant d'optimiser son rendement, par exemple, un carossage donnant une meilleure aérodynamique et autres.The centrifuge according to the invention is made of materials very resistant to impact and corrosion.
The centrifuge according to the invention finds a particular application in the treatment of sludge to separate water from solids but it goes without saying that other applications can be made of the centrifuge.
Feeding cycles, centrifugation, evacuation of low density products then high density products can be automated using sensors, timing measurement and more.
The centrifuge can receive any type of element making it possible to optimize its performance, for example, a camber giving better aerodynamics and the like.

Il va de soi que la présente invention peut recevoir tous aménagements et toutes variantes sans pour autant sortir du cadre du présent brevet.It goes without saying that the present invention can receive all arrangements and all variants without departing from the scope of this patent.

Claims (12)

Centrifugeuse à fonctionnement continu caractérisée en ce qu'elle comporte un châssis (1), un ensemble rotatif (2) autour d'un arbre (3) entraîné en rotation et guidé dans le châssis (1), au moins deux caissons (4) montés chacun en articulation dans l'ensemble rotatif (2) sur un axe (7) parallèle à l'arbre (3) d'entraînement du dit ensemble rotatif et des moyens d'entraînement en rotation de chaque caisson (4) dans l'ensemble rotatif (2) pour entraîner chaque caisson entre une position d'alimentation et de centrifugation et une position d'évacuation des produits de plus forte densité, en ce que chaque caisson (4) est doté d'une face ouverte (4A) orientée vers l'intérieur du dit ensemble rotatif en position d'alimentation et de centrifugation et vers l'extérieur du dit ensemble rotatif en position d'évacuation et en ce que l'alimentation en mélange à séparer est constituée par l'arbre (3) doté d'une portion tubulaire (3A) en extrémité de laquelle est introduit le mélange et pourvue d'au moins deux sorties (3B) disposées chacune en regard de la face (4A) ouverte d'au moins un caisson (4).Centrifuge with continuous operation, characterized in that it comprises a chassis (1), a rotary assembly (2) around a shaft (3) driven in rotation and guided in the chassis (1), at least two boxes (4) each mounted in articulation in the rotary assembly (2) on an axis (7) parallel to the shaft (3) for driving the said rotary assembly and means for driving in rotation each box (4) in the rotary assembly (2) for driving each box between a feeding and centrifuging position and a position for discharging products of higher density, in that each box (4) is provided with an open face (4A) oriented inwardly of said rotary assembly in the feed and centrifuge position and outwardly of said rotary assembly in the discharge position and in that the supply of mixture to be separated is constituted by the shaft (3) provided with a tubular portion (3A) at the end of which is introduced t the mixture and provided with at least two outlets (3B) each disposed opposite the open face (4A) of at least one box (4). Centrifugeuse selon la revendication 1 caractérisée en ce que chaque caisson (4) est doté d'au moins une lumière (9) ménagée perpendiculairement à l'axe de rotation de l'ensemble rotatif (2), d'un dispositif d'obturation (10) de chaque lumière (9) et d'un collecteur (11) de récupération des produits de faible densité en sortie de chaque lumière (9).Centrifuge according to claim 1 characterized in that each box (4) is provided with at least one lumen (9) formed perpendicular to the axis of rotation of the rotary assembly (2), with a closure device ( 10) of each light (9) and of a collector (11) for recovering low density products at the output of each light (9). Centrifugeuse selon les revendications 1 et 2 caractérisée en ce que chaque caisson (4) présente un fond (4B) paralléle à l'axe de rotation de l'ensemble rotatif, deux parois latérales (4C) sur au moins une desquelles est ménagée au moins une lumière (9), la face (4A) ouverte et deux faces parallèles aux flasques (5) de l'ensemble rotatif (2).Centrifuge according to claims 1 and 2 characterized in that each box (4) has a bottom (4B) parallel to the axis of rotation of the rotary assembly, two side walls (4C) on at least one of which is provided at least one lumen (9), the face (4A) open and two faces parallel to the flanges (5) of the rotary assembly (2). Centrifugeuse selon les revendications 1 et 3 caractérisée en ce que chaque caisson (4) est articulé dans l'ensemble rotatif (2) par un arbre (8) définissant l'axe (7) d'articulation, fixé sur le caisson (4) et guidé en rotation dans les flasques (5) de l'ensemble (2).Centrifuge according to claims 1 and 3 characterized in that each box (4) is articulated in the rotary assembly (2) by a shaft (8) defining the axis (7) of articulation, fixed on the box (4) and guided in rotation in the flanges (5) of the assembly (2). Centrifugeuse selon les revendications 1, 3 et 4 caractérisée en ce que l'axe (7) est centré par rapport au caisson (4).Centrifuge according to claims 1, 3 and 4 characterized in that the axis (7) is centered relative to the box (4). Centrifugeuse selon la revendication 1 caractérisée en ce que les moyens d'entraînement en rotation de chaque caisson (4) entre une position d'alimentation et de centrifugation et une position d'évacuation sont constitués par une couronne dentée (20) guidée en rotation sur l'arbre (3) et fixe en translation, par un pignon (21) fixe en rotation et en translation par rapport à l'axe (7) d'articulation de chaque caisson et engrenant avec la couronne dentée (20) et par au moins un organe (22) d'entraînement en rotation de la couronne (20) sur l'arbre (3) solidaire de l'ensemble rotatif (2).Centrifuge according to claim 1 characterized in that the means for driving each case (4) in rotation between a supply and centrifugation position and a discharge position are constituted by a toothed ring (20) guided in rotation on the shaft (3) and fixed in translation, by a pinion (21) fixed in rotation and in translation relative to the axis (7) of articulation of each box and meshing with the ring gear (20) and by at at least one member (22) for driving the crown (20) in rotation on the shaft (3) integral with the rotary assembly (2). Centrifugeuse selon la revendication 6 caractérisée en ce que chaque pignon (21) est d'un diamètre inférieur à la couronne (20).Centrifuge according to claim 6 characterized in that each pinion (21) is of a diameter less than the crown (20). Centrifugeuse selon la revendication 1 caractérisée en ce que chaque caisson (4) est doté d'une grille de calibrage (25) paralléle à l'arbre (3).Centrifuge according to claim 1 characterized in that each box (4) is provided with a calibration grid (25) parallel to the shaft (3). Centrifugeuse selon les revendications précédentes prises dans leur ensemble caractérisée en ce que l'axe de rotation de l'ensemble rotatif (2) est vertical.Centrifuge according to the preceding claims taken as a whole, characterized in that the axis of rotation of the rotary assembly (2) is vertical. Centrifugeuse selon la revendication 1 caractérisée en ce qu'elle est dotée d'une sole tournante (15) concentrique à l'ensemble rotatif (2) et s'étendant parallèlement à un flasque de ce dernier.Centrifuge according to claim 1 characterized in that it is provided with a rotary hearth (15) concentric with the rotary assembly (2) and extending parallel to a flange of the latter. Centrifugeuse selon la revendication 1 caractérisée en ce qu'elle comporte une paroi brise-jet (26) concentrique à l'ensemble rotatif (2) et parallèle à l'axe de rotation de ce dernier.Centrifuge according to claim 1 characterized in that it comprises a jet-breaking wall (26) concentric with the rotary assembly (2) and parallel to the axis of rotation of the latter. Centrifugeuse selon les revendications 1, 3 et 4 caractérisée en ce que l'axe (7) est proche du fond (4B) du caisson (4) et est disposé dans un plan perpendiculaire et médian au dit fond (4B).Centrifuge according to claims 1, 3 and 4 characterized in that the axis (7) is close to the bottom (4B) of the box (4) and is arranged in a plane perpendicular and median to said bottom (4B).
EP91401832A 1990-07-11 1991-07-03 Continuously operating centrifuge Withdrawn EP0466559A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9009188A FR2664508B1 (en) 1990-07-11 1990-07-11 CENTRIFUGE WITH CONTINUOUS OPERATION.
FR9009188 1990-07-11

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
WO1994025172A1 (en) * 1993-05-04 1994-11-10 Heinz Weise Centrifuge
EP0882511A2 (en) * 1997-06-02 1998-12-09 Horyo Corporation Centrifugal separator
CN115970920A (en) * 2023-03-20 2023-04-18 烟台星齐医学检验有限公司 A separator for microbiological examination

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FR2508815A1 (en) * 1981-07-03 1983-01-07 Lavaux Albert Centrifuge employing series of suspended buckets - which may rotate around their axis of symmetry to discharge liquid
EP0160901A2 (en) * 1984-05-03 1985-11-13 Abbott Laboratories Centrifuge

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SU1242241A1 (en) * 1984-11-27 1986-07-07 Белорусское Республиканское Научно-Производственное Объединение "Центр" Filtering centrifuge

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FR2508815A1 (en) * 1981-07-03 1983-01-07 Lavaux Albert Centrifuge employing series of suspended buckets - which may rotate around their axis of symmetry to discharge liquid
EP0160901A2 (en) * 1984-05-03 1985-11-13 Abbott Laboratories Centrifuge

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SOVIET INVENTIONS ILLUSTRATED Section Ch, Week 8708, 4 Mars 1987 Derwent Publications Ltd., London, GB; Class H, AN 87-055639/08 & SU-A-1 242 241 (BELO TSENTR COMBINE) 7 Juillet 1986 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994025172A1 (en) * 1993-05-04 1994-11-10 Heinz Weise Centrifuge
EP0882511A2 (en) * 1997-06-02 1998-12-09 Horyo Corporation Centrifugal separator
EP0882511A3 (en) * 1997-06-02 1999-03-24 Horyo Corporation Centrifugal separator
CN115970920A (en) * 2023-03-20 2023-04-18 烟台星齐医学检验有限公司 A separator for microbiological examination
CN115970920B (en) * 2023-03-20 2023-06-02 烟台星齐医学检验有限公司 A separator for microbiological inspection

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FR2664508A1 (en) 1992-01-17

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