EP0045336A1 - Continuously operating centrifugal strainers - Google Patents

Continuously operating centrifugal strainers Download PDF

Info

Publication number
EP0045336A1
EP0045336A1 EP80401139A EP80401139A EP0045336A1 EP 0045336 A1 EP0045336 A1 EP 0045336A1 EP 80401139 A EP80401139 A EP 80401139A EP 80401139 A EP80401139 A EP 80401139A EP 0045336 A1 EP0045336 A1 EP 0045336A1
Authority
EP
European Patent Office
Prior art keywords
partition
skirt
basket
baffle
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP80401139A
Other languages
German (de)
French (fr)
Other versions
EP0045336B1 (en
Inventor
Gérard Journet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fives Cail Babcock SA
Original Assignee
Fives Cail Babcock SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fives Cail Babcock SA filed Critical Fives Cail Babcock SA
Priority to EP80401139A priority Critical patent/EP0045336B1/en
Priority to DE8080401139T priority patent/DE3066973D1/en
Publication of EP0045336A1 publication Critical patent/EP0045336A1/en
Application granted granted Critical
Publication of EP0045336B1 publication Critical patent/EP0045336B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/02—Continuous feeding or discharging; Control arrangements therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/02—Casings; Lids
    • B04B7/04—Casings facilitating discharge

Definitions

  • the present invention relates to centrifugal wringers with continuous operation of the type comprising a conical basket rotating around a vertical axis and the inner surface of which is covered with a screen on which the product to be wrung, which is poured into the basket, moves. under the action of centrifugal force to the upper large diameter end of the basket where it is evacuated by overflow and collected in a first chamber, the liquid having filtered through the sieve being collected in a second chamber surrounding the basket and separated from the first by a circular partition.
  • the rotation of the basket causes an air circulation from the interior of the basket to the liquid receiving chamber, through the basket openings, then to the chamber for receiving the product wrung out through the circular slot which exists between the upper edge of the basket and that of the partition.
  • This air flow causes droplets of liquid in the receiving chamber of the wrung product, which is a drawback for certain uses, in particular in sugar refinery where the humidification of the crystals promotes their agglomeration and the formation of deposits.
  • Another solution consists in hydraulically isolating the space delimited by the partition and the skirt of the second chamber by associating with the skirt a baffle fixed on the partition and comprising a part in the form of a truncated cone whose angle at the top is very open and the inner edge of which is located slightly above the lower edge of the skirt so that the liquid collected by the skirt at the outlet of the basket is projected in a sheet on the underside of the truncated cone, a gasket hydraulic sealing being provided between the lower edge of the baffle and the partition.
  • This solution gives satisfactory results when the liquid is relatively viscous, but with more fluid liquids the sealing is less good, probably because the liquid film which is on the upper face of the baffle instead of returning to the chamber. liquid through the space provided between the outer edge of the baffle and the partition and the hydraulic seal is again dispersed into fine droplets by the air current created by the rotation of the skirt.
  • the object of the present invention is to improve the known solutions with a view to ensuring good sealing even with liquids of low viscosity.
  • the centrifugal wringer object of the invention, is characterized in that it comprises, in the annular space delimited by the skirt of the basket, the partition separating the two chambers and a circular baffle fixed on the partition and the inner edge is located a short distance from the skirt, a droplet trap constituted by a mattress of entangled threads and arranged all along the partition, on its entire periphery, so that the droplets suspended in the air stream are captured by the trap and flow by gravity into the liquid receiving chamber through openings drilled in the baffle or passages made between the outer edge of the latter and the partition.
  • the trap can be constituted by a mattress of metallic or synthetic threads, knitted or woven loosely enough so that the droplets can penetrate easily.
  • the thickness of the mattress must be sufficient for the droplets to be sheltered from the air current generated by the rotation of the skirt; in practice a thickness of 1 to 2 cm is suitable.
  • the mattress can be pressed against the interior face of the partition, between its upper edge and the baffle, or be in contact with the partition only by its upper part, its lower part being away from the partition and fixed on chicanery.
  • a seal formed by a rubber ring is placed between the upper edge of the partition and the basket.
  • This screen can be constituted, for example, by a cylindrical ferrule concentric with the basket and a ring fixed to this ferrule, substantially at the level of the lower edge of the skirt, and the outer edge of which is located a short distance from the skirt.
  • the centrifugal wringer shown in FIG. 1 comprises a conical basket 10 with a full wall, flared upwards and rotating around a vertical pivot 12 which is supported by the tank 14 of the machine.
  • This tank is divided by a circular section partition 16 into a chamber for receiving the liquid 18 provided with a bottom 19 and a chamber for receiving the wrung products 20.
  • the inner surface of the basket is covered with a screen 22 which is kept spaced from this surface by suitable spacing means allowing the liquid having passed through the screen to flow to the upper end of the basket where it is discharged. by holes or slots 24 provided at this end.
  • a frustoconical skirt 26 On the upper edge of the basket is attached a frustoconical skirt 26 which is full and flared downwards. At its lower end, this skirt is provided with a rim 28 situated slightly below the inner edge of a baffle 30 constituted by a very open truncated cone extending downwards by a cylindrical wall fixed by means of spacers on the partition 16, a short distance from the latter; the lower end of the baffle 30 plunges into a circular channel 32 fixed to the partition 16.
  • a mattress 33 of entangled threads for example knitted or woven, is fixed on the inner face of the partition 16, in the space 35 delimited by the latter, the skirt 26 and the baffle 30, and all around the partition .
  • a rubber ring 34 is fixed to the upper edge of the partition 16 and constitutes a seal isolating the aforementioned space from the chamber 20.
  • a cylindrical ferrule 36 fixed on the bottom of the chamber 18 and a ring 38 fixed on the latter, at the level of the rim 28 of the skirt 26, constitute a screen isolating the basket from the chamber 18 in order to reduce the ventilation generated in this chamber by the rotation of the basket.
  • the liquid having filtered through the sieve flows on the interior surface of the basket to its upper end where it is discharged through the orifices 24, and projected onto the interior surface of the skirt 26; it then flows to the lower end of the skirt from which it escapes in a horizontal sheet, under the action of centrifugal force.
  • This sheet is projected onto the baffle 30 and the liquid flowing along the vertical part of the latter falls into the channel 32 from which it pours by overflow into the chamber 18.
  • the other part of the liquid which has entered the space 35 is sprayed into fine droplets by the air current created by the rotation of the basket.
  • These droplets are in drawn by the air stream to the partition 16 and penetrates in the tren t son mattress 33 which constitutes a trap where the droplets are sheltered from the air stream and can flow by gravity to its lower part from which they fall into the space formed between the partition 16 and the vertical part of the baffle 30.
  • the baffle 30 ' is constituted by a ring fixed to the partition 16 by its outer edge and pierced, near this edge, with openings 40 serving to evacuate towards the chamber 18 the liquid s 'dripping from the trap 33 ".
  • the droplet trap could also be placed between the partition 16 and the baffle 30', as in the variant of FIG. 3.
  • the invention can in particular be used in sweets for the spinning of mass-cooked.

Landscapes

  • Centrifugal Separators (AREA)

Abstract

1. Continuously operating centrifugal strainer consisting of a conical bowl (10) widening towards the top and rotating around a vertical axis in a tank (14) which is divided by a partition of circular cross section into a liquid receiving chamber (18) and a chamber receiving the dried products (20), a solid skirt (26) surrounding the upper part of the bowl to which ist is fixed and a circular baffle (30) fixed to the partition at the level of the bottom of the skirt, characterised by the fact that it includes, in the circular space defined by the partition (16), the skirt (26) and the baffle (30), a droplet trap (33, 33', 33") consisting of a cushion of matted threads extending all around the partition (16) so as to catch the droplets in suspension in the air current flowing in this space and to allow their draining by gravity towards the liquid receiving chamber (18).

Description

La présente invention concerne les essoreuses centrifuges à marche continue du type comportant un panier conique tournant autour d'un axe vertical et dont la surface intérieure est recouverte d'un tamis sur lequel le produit à essorer, qui est déversé dans le panier, se déplace sous l'action de la force centrifuge jusqu'à l'extrémité supérieure de grand diamètre du panier où il est évacué par débordement et recueilli dans une première chambre, le liquide ayant filtré à travers le tamis étant recueilli dans une seconde chambre entourant le panier et séparée de la première par une cloison circulaire.The present invention relates to centrifugal wringers with continuous operation of the type comprising a conical basket rotating around a vertical axis and the inner surface of which is covered with a screen on which the product to be wrung, which is poured into the basket, moves. under the action of centrifugal force to the upper large diameter end of the basket where it is evacuated by overflow and collected in a first chamber, the liquid having filtered through the sieve being collected in a second chamber surrounding the basket and separated from the first by a circular partition.

Dans ces appareils, la rotation du panier provoque une circulation d'air de l'intérieur du panier vers la chambre de réception du liquide, à travers les ouvertures du panier, puis vers la chambre de réception du produit essoré à travers la fente circulaire qui existe entre le bord supérieur du panier et celui de la cloison. Ce courant d'air entraîne des gouttelettes de liquide dans la chambre de réception du produit essoré ce qui constitue un inconvénient pour certaines utilisations, notamment en sucrerie où l'humidification des cristaux favorise leur agglomération et la formation de dépôts.In these devices, the rotation of the basket causes an air circulation from the interior of the basket to the liquid receiving chamber, through the basket openings, then to the chamber for receiving the product wrung out through the circular slot which exists between the upper edge of the basket and that of the partition. This air flow causes droplets of liquid in the receiving chamber of the wrung product, which is a drawback for certain uses, in particular in sugar refinery where the humidification of the crystals promotes their agglomeration and the formation of deposits.

Pour remédier à cet inconvénient on a cherché à améliorer l'étanchéité entre les deux chambres et à éviter la circulation de l'air de la seconde chambre vers la première. On connaît en particulier des essoreuses centrifuges dont le panier est muni d'une jupe tronconique, s'évasant vers le bas et fixé sur son bord supérieur et qui comportent une ou plusieurs chicanes circulaires fixées sur la cloison et dont le bord intérieur se trouve à faible distance de la jupe. Bien que ces chicanes constituent des obstacles à la circulation de l'air chargé de gouttelettes, l'efficacité d'un tel système est réduite.To remedy this drawback, attempts have been made to improve the seal between the two chambers and to avoid the circulation of air from the second chamber to the first. Particularly known centrifugal dryers whose basket is provided with a frustoconical skirt, flaring down and fixed on its upper edge and which comprise one or more circular baffles fixed on the partition and whose inner edge is short distance from the skirt. Although these baffles constitute obstacles to the circulation of the air charged with droplets, the efficiency of such a system is reduced.

Une autre solution consiste à isoler hydrauliquement l'espace délimité par la cloison et la jupe de la seconde chambre en associant à la jupe une chicane fixée sur la cloison et comportant une partie en forme de tronc de cône dont l'angle au sommet est très ouvert et dont le bord intérieur est situé légèrement au-dessus du bord inférieur de la jupe de telle sorte que le liquide recueilli par la jupe à la sortie du panier est projeté en nappe sur la face inférieure du tronc de cône, un joint d'étanchéité hydraulique étant prévu entre le bord inférieur de la chicane et la cloison. Cette solution donne des résultats satisfaisants lorsque le liquide est relativement visqueux, mais avec des liquides plus fluides l'étanchéité est moins bonne, probablement parce que la pellicule liquide qui se trouve sur la face supérieure de la chicane au lieu de retourner dans la chambre à liquide par l'espace ménagé entre le bord extérieur de la chicane et la cloison et le joint hydraulique est à nouveau dispersée en fines gouttelettes par le courant d'air créé par la rotation de la jupe.Another solution consists in hydraulically isolating the space delimited by the partition and the skirt of the second chamber by associating with the skirt a baffle fixed on the partition and comprising a part in the form of a truncated cone whose angle at the top is very open and the inner edge of which is located slightly above the lower edge of the skirt so that the liquid collected by the skirt at the outlet of the basket is projected in a sheet on the underside of the truncated cone, a gasket hydraulic sealing being provided between the lower edge of the baffle and the partition. This solution gives satisfactory results when the liquid is relatively viscous, but with more fluid liquids the sealing is less good, probably because the liquid film which is on the upper face of the baffle instead of returning to the chamber. liquid through the space provided between the outer edge of the baffle and the partition and the hydraulic seal is again dispersed into fine droplets by the air current created by the rotation of the skirt.

Le but de la présente invention est d'améliorer les solutions connues en vue d'assurer une bonne étanchéité même avec des liquides à faible viscosité.The object of the present invention is to improve the known solutions with a view to ensuring good sealing even with liquids of low viscosity.

L'essoreuse centrifuge, objet de l'invention, est caractérisée en ce qu'elle comporte, dans l'espace annulaire délimité par la jupe du panier, la cloison de séparation des deux chambres et une chicane circulaire fixée sur la cloison et dont le bord intérieur se trouve à faible distance de la jupe, un piège à gouttelettes constitué par un matelas de fils enchevêtrés et disposé tout le long de la cloison, sur toute sa périphérie, de façon que les gouttelettes en suspension dans le courant d'air soient captées par le piège et s'écoulent par gravité jusque dans la chambre de réception du liquide à travers des ouvertures percées dans la chicane ou des passages ménagés entre le bord extérieur de cette dernière et la cloison. Le piège peut être constitué par un matelas de fils métalliques ou synthétiques, tricotés ou tissés de manière assez lâche pour que les gouttelettes puissent y pénétrer facilement. L'épaisseur du matelas doit être suffisante pour que les gouttelettes y soient à l'abri du courant d'air engendré par la rotation de la jupe ; en pratique une épaisseur de 1 à 2 cm convient. Le matelas peut être plaqué sur la face intérieure de la cloison, entre son bord supérieur et la chicane, ou n'être en contact avec la cloison que par sa partie supérieure, sa partie inférieure étant à l'écart de la cloison et fixée sur la chicane.The centrifugal wringer, object of the invention, is characterized in that it comprises, in the annular space delimited by the skirt of the basket, the partition separating the two chambers and a circular baffle fixed on the partition and the inner edge is located a short distance from the skirt, a droplet trap constituted by a mattress of entangled threads and arranged all along the partition, on its entire periphery, so that the droplets suspended in the air stream are captured by the trap and flow by gravity into the liquid receiving chamber through openings drilled in the baffle or passages made between the outer edge of the latter and the partition. The trap can be constituted by a mattress of metallic or synthetic threads, knitted or woven loosely enough so that the droplets can penetrate easily. The thickness of the mattress must be sufficient for the droplets to be sheltered from the air current generated by the rotation of the skirt; in practice a thickness of 1 to 2 cm is suitable. The mattress can be pressed against the interior face of the partition, between its upper edge and the baffle, or be in contact with the partition only by its upper part, its lower part being away from the partition and fixed on chicanery.

Conformément à une autre caractéristique de l'invention, un joint d'étanchéité constitué par un anneau en caoutchouc est placé entre le bord supérieur de la cloison et le panier.According to another characteristic of the invention, a seal formed by a rubber ring is placed between the upper edge of the partition and the basket.

Pour diminuer la ventilation engendrée par la rotation du panier dans la chambre de réception du liquide, il est proposé, conformément à une troisième caractéristique de l'invention, de placer un écran entre la dite chambre et le panier et sa jupe. Cet écran peut être constitué, par exemple, par une virole cylindrique concentrique au panier et un anneau fixé sur cette virole, sensiblement au niveau du bord inférieur de la jupe, et dont le bord extérieur se trouve à faible distance de la jupe.To reduce the ventilation caused by the rotation of the basket in the liquid receiving chamber, it is proposed, in accordance with a third characteristic of the invention, to place a screen between said chamber and the basket and its skirt. This screen can be constituted, for example, by a cylindrical ferrule concentric with the basket and a ring fixed to this ferrule, substantially at the level of the lower edge of the skirt, and the outer edge of which is located a short distance from the skirt.

D'autres caractéristiques de l'invention apparaîtront à la lecture de la description qui suit et se réfère aux dessins l'accompagnant qui montrent, à titre d'exemple non limitatif, plusieurs modes de réalisation de l'invention et sur lesquels :

  • La figure 1 est une vue en coupe verticale d'une essoreuse centrifuge réalisée conformément à l'invention ;
  • la figure 2 est une vue en coupe, à plus grande échelle, d'une partie de l'essoreuse de la figure 1 ;
  • et les figures 3 et 4 sont des vues partielles, en coupe, illustrant deux variantes de réalisation de l'invention.
Other characteristics of the invention will appear on reading the description which follows and refers to the accompanying drawings which show, by way of nonlimiting example, several embodiments of the invention and in which:
  • Figure 1 is a vertical sectional view of a centrifugal wringer produced in accordance with the invention;
  • Figure 2 is a sectional view, on a larger scale, of a portion of the wringer of Figure 1;
  • and FIGS. 3 and 4 are partial views, in section, illustrating two alternative embodiments of the invention.

L'essoreuse centrifuge représentée sur la figure 1 comporte un panier conique 10 à paroi pleine, évasé vers le haut et tournant autour d'un pivot vertical 12 qui est supporté par la cuve 14 de la machine. Cette cuve est divisée par une cloison à section circulaire 16 en une chambre de réception du liquide 18 munie d'un fond 19 et une chambre de réception des produits essorés 20.The centrifugal wringer shown in FIG. 1 comprises a conical basket 10 with a full wall, flared upwards and rotating around a vertical pivot 12 which is supported by the tank 14 of the machine. This tank is divided by a circular section partition 16 into a chamber for receiving the liquid 18 provided with a bottom 19 and a chamber for receiving the wrung products 20.

La surface intérieure du panier est recouverte d'un tamis 22 qui est maintenu écarté de cette surface par des moyens d'espacement appropriés permettant au liquide ayant traversé le tamis de s'écouler jusqu'à l'extrémité supérieure du panier où il est évacué par des trous ou fentes 24 prévus à cette extrémité.The inner surface of the basket is covered with a screen 22 which is kept spaced from this surface by suitable spacing means allowing the liquid having passed through the screen to flow to the upper end of the basket where it is discharged. by holes or slots 24 provided at this end.

Sur le bord supérieur du panier est fixée une jupe tronconique 26 qui est pleine et évasée vers le bas. A son extrémité inférieure, cette jupe est munie d'un rebord 28 situé légèrement au-dessous du bord intérieur d'une chicane 30 constituée par un tronc de cône très ouvert se prolongeant vers le bas par une paroi cylindrique fixée au moyen d'entretoises sur la cloison 16, à faible distance de celle-ci ; l'extrémité inférieure de la chicane 30 plonge dans une rigole circulaire 32 fixée sur la cloison 16.On the upper edge of the basket is attached a frustoconical skirt 26 which is full and flared downwards. At its lower end, this skirt is provided with a rim 28 situated slightly below the inner edge of a baffle 30 constituted by a very open truncated cone extending downwards by a cylindrical wall fixed by means of spacers on the partition 16, a short distance from the latter; the lower end of the baffle 30 plunges into a circular channel 32 fixed to the partition 16.

Un matelas 33 de fils enchevêtrés, par exemple tricotés ou tissés, est fixé sur la face intérieure de la cloison 16, dans l'espace 35 délimité par cette dernière, la jupe 26 et la chicane 30, et sur tout le tour de la cloison.A mattress 33 of entangled threads, for example knitted or woven, is fixed on the inner face of the partition 16, in the space 35 delimited by the latter, the skirt 26 and the baffle 30, and all around the partition .

Un anneau en caoutchouc 34 est fixé sur le rebord supérieur de la cloison 16 et constitue un joint d'étanchéité isolant l'espace précité de la chambre 20.A rubber ring 34 is fixed to the upper edge of the partition 16 and constitutes a seal isolating the aforementioned space from the chamber 20.

Une virole cylindrique 36 fixée sur le fond de la chambre 18 et un anneau 38 fixé sur cette dernière, au niveau du rebord 28 de la jupe 26, constituent un écran isolant le panier de la chambre 18 dans le but de diminuer la ventilation engendrée dans cette chambre par la rotation du panier.A cylindrical ferrule 36 fixed on the bottom of the chamber 18 and a ring 38 fixed on the latter, at the level of the rim 28 of the skirt 26, constitute a screen isolating the basket from the chamber 18 in order to reduce the ventilation generated in this chamber by the rotation of the basket.

En fonctionnement, le liquide ayant filtré à travers le tamis s'écoule sur la surface intérieure du panier jusqu'à son extrémité supérieure où il est évacué par les orifices 24, et projeté sur la surface intérieure de la jupe 26 ; il s'écoule ensuite jusqu'à l'extrémité inférieure de la jupe d'où il s'échappe en une nappe horizontale, sous l'action de la force centrifuge. Cette nappe est projetée sur la chicane 30 et le liquide s'écoulant le long de la partie verticale de cette dernière tombe dans la rigole 32 d'où il se déverse par débordement dans la chambre 18.In operation, the liquid having filtered through the sieve flows on the interior surface of the basket to its upper end where it is discharged through the orifices 24, and projected onto the interior surface of the skirt 26; it then flows to the lower end of the skirt from which it escapes in a horizontal sheet, under the action of centrifugal force. This sheet is projected onto the baffle 30 and the liquid flowing along the vertical part of the latter falls into the channel 32 from which it pours by overflow into the chamber 18.

L'éjection à grande vitesse du liquide, à l'extrémité inférieure de la jupe, crée une légère dépression dans l'espace 35. Par ailleurs, la ventilation engendrée par la rotation du panier crée une surpression dans la chambre 18. Cette surpression alliée au mouvement tournant de l'air dans la chambre 18 provoque la formation sur la face inférieure de la chicane 30 d'une mince pellicule de liquide qui se déplace lentement et pénètre dans l'espace 35 à travers la fente ménagée entre le bord intérieur de la chicane et la jupe. Dans l'espace 35, une partie du liquide est poussée par le courant d'air créé par la ventilation vers l'espace compris entre la cloison 16 et la partie verticale de la chicane 30 ; cet espace étant à l'abri de la ventilation, le liquide descend par gravité dans la rigole 32 qui forme, avec le bas de la chicane, un joint hydraulique destiné à empêcher le passage des gouttelettes du liquide en suspension dans l'air de la chambre 18 vers l'espace 35.The high-speed ejection of the liquid, at the lower end of the skirt, creates a slight depression in the space 35. Furthermore, the ventilation generated by the rotation of the basket creates an overpressure in the chamber 18. This combined overpressure the rotating movement of the air in the chamber 18 causes the formation on the underside of the baffle 30 of a thin film of liquid which moves slowly and enters the space 35 through the slot formed between the inner edge of the chicane and the skirt. In space 35, part of the liquid is pushed by the air stream created by ventilation to the space between the partition 16 and the vertical part of the baffle 30; this space being sheltered from ventilation, the liquid descends by gravity into the channel 32 which forms, with the bottom of the baffle, a hydraulic seal intended to prevent the passage of droplets of the liquid in suspension in the air of the bedroom 18 to space 35.

L'autre partie du liquide ayant pénétré dans l'espace 35 est pulvérisée en fines gouttelettes par le courant d'air créé par la rotation du panier. Ces gouttelettes sont entraînées par le courant d'air vers la cloison 16 et pénè- trent dans le matelas de fils 33 qui constitue un piège où les gouttelettes sont à l'abri du courant d'air et peuvent s'écouler par gravité jusqu'à sa partie inférieure d'où elles tombent dans l'espace ménagé entre la cloison 16 et la partie verticale de la chicane 30.The other part of the liquid which has entered the space 35 is sprayed into fine droplets by the air current created by the rotation of the basket. These droplets are in drawn by the air stream to the partition 16 and penetrates in the tren t son mattress 33 which constitutes a trap where the droplets are sheltered from the air stream and can flow by gravity to its lower part from which they fall into the space formed between the partition 16 and the vertical part of the baffle 30.

Dans la variante représentée sur la figure 3, le matelas de fils 33' est fixé entre la cloison 16 et la chicane 30 et le joint hydraulique entre le bas de la chicane 30 et la cloison a été supprimé.In the variant shown in Figure 3, the son mattress 33 'is fixed between the partition 16 and the baffle 30 and the hydraulic seal between the bottom of the baffle 30 and the partition has been removed.

Dans le mode de réalisation de la figure 4, la chicane 30' est constituée par un anneau fixé sur la cloison 16 par son bord extérieur et percé, près de ce bord, d'ouvertures 40 servant à évacuer vers la chambre 18 le liquide s'égouttant du piège 33". Dans ce mode de réalisation, le piège à gouttelettes pourrait aussi être placé entre la cloison 16 et la chicane 30', comme dans la variante de la figure 3.In the embodiment of Figure 4, the baffle 30 'is constituted by a ring fixed to the partition 16 by its outer edge and pierced, near this edge, with openings 40 serving to evacuate towards the chamber 18 the liquid s 'dripping from the trap 33 ". In this embodiment, the droplet trap could also be placed between the partition 16 and the baffle 30', as in the variant of FIG. 3.

De nombreuses modifications peuvent être apportées aux modes de réalisation décrits par la substitution de moyens techniques équivalents et il est bien entendu que ces modifications entrent dans le cadre de l'invention.Many modifications can be made to the embodiments described by the substitution of equivalent technical means and it is understood that these modifications come within the scope of the invention.

L'invention est notamment utilisable en sucrerie pour l'essorage des masses-cuites.The invention can in particular be used in sweets for the spinning of mass-cooked.

Claims (6)

1. Essoreuse centrifuge à marche continue comportant un panier conique (10) évasé vers le haut et tournant autour d'un axe vertical dans une cuve (14) qui est divisée par une cloison (16) à section circulaire en une chambre de réception du liquide (18) et une chambre de réception des produits essorés (20), une jupe pleine (26) entourant la partie supérieure du panier auquel elle est fixée et une chicane circulaire (30) fixée sur la cloison, au niveau de la partie inférieure de la jupe, caractérisée en ce qu'elle comporte, dans l'espace annulaire défini par la cloison (16), la jupe (26) et la chicane (30), un piège à gouttelettes (33, 33', 33") constitué par un matelas de fils enchevêtrés et disposé sur tout le tour de la cloison (16) de façon à capter les gouttelettes en suspension dans le courant d'air circulant dans cet espace et à permettre leur écoulement par gravité vers la chambre de réception du liquide (18).1. Continuous centrifugal wringer comprising a conical basket (10) flared upwards and rotating around a vertical axis in a tank (14) which is divided by a partition (16) of circular section in a chamber for receiving the liquid (18) and a chamber for receiving wringed products (20), a full skirt (26) surrounding the upper part of the basket to which it is fixed and a circular baffle (30) fixed on the partition, at the level of the lower part of the skirt, characterized in that it comprises, in the annular space defined by the partition (16), the skirt (26) and the baffle (30), a droplet trap (33, 33 ', 33 ") consisting of a mattress of entangled threads and arranged all around the partition (16) so as to capture the droplets suspended in the air stream circulating in this space and to allow their flow by gravity to the receiving chamber of the liquid (18). 2. Essoreuse centrifuge selon la revendication 1, caractérisée en ce que le piège (33, 33', 33") est constitué par un matelas de fils tricotés ou tissés.2. Centrifugal wringer according to claim 1, characterized in that the trap (33, 33 ', 33 ") consists of a mattress of knitted or woven threads. 3. Essoreuse centrifuge selon la revendication 1 ou 2, caractérisée en ce que le matelas de fils constituant le piège (33, 33") est plaqué sur la face intérieure de la cloison (16), entre son bord supérieur et la chicane (30).3. Centrifugal wringer according to claim 1 or 2, characterized in that the mattress of wires constituting the trap (33, 33 ") is pressed against the inner face of the partition (16), between its upper edge and the baffle (30 ). 4. Essoreuse centrifuge selon la revendication 1 ou 2, caractérisée en ce que le matelas de fils constituant le piège (33') est en contact avec la cloison (16) seulement dans sa partie supérieure et sa partie inférieure est en contact avec la chicane (30).4. Centrifugal wringer according to claim 1 or 2, characterized in that the mattress of wires constituting the trap (33 ') is in contact with the partition (16) only in its upper part and its lower part is in contact with the baffle (30). 5. Essoreuse centrifuge selon la revendication 1, 2, 3 ou 4, caractérisée en ce qu'elle comprend un joint d'étanchéité constitué par un anneau en caoutchouc (34) placé entre le bord supérieur de la cloison (16) et le panier (10).5. Centrifugal wringer according to claim 1, 2, 3 or 4, characterized in that it comprises a seal formed by a rubber ring (34) placed between the upper edge of the partition (16) and the basket (10). 6. Essoreuse centrifuge selon la revendication 1, 2, 3, 4 ou 5, caractérisée en ce que la chambre de réception du liquide (18) est isolée du panier (10) par un écran constitué par une virole (36) concentrique au panier et un anneau (38) fixé sur cette virole sensiblement au niveau du bord inférieur de la jupe (26).6. centrifugal wringer according to claim 1, 2, 3, 4 or 5, characterized in that the liquid receiving chamber (18) is isolated from the basket (10) by a screen constituted by a ferrule (36) concentric with the basket and a ring (38) fixed to this ferrule substantially at the level of the lower edge of the skirt (26).
EP80401139A 1980-08-01 1980-08-01 Continuously operating centrifugal strainers Expired EP0045336B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP80401139A EP0045336B1 (en) 1980-08-01 1980-08-01 Continuously operating centrifugal strainers
DE8080401139T DE3066973D1 (en) 1980-08-01 1980-08-01 Continuously operating centrifugal strainers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80401139A EP0045336B1 (en) 1980-08-01 1980-08-01 Continuously operating centrifugal strainers

Publications (2)

Publication Number Publication Date
EP0045336A1 true EP0045336A1 (en) 1982-02-10
EP0045336B1 EP0045336B1 (en) 1984-03-14

Family

ID=8187389

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80401139A Expired EP0045336B1 (en) 1980-08-01 1980-08-01 Continuously operating centrifugal strainers

Country Status (2)

Country Link
EP (1) EP0045336B1 (en)
DE (1) DE3066973D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10391682B2 (en) 2013-08-13 2019-08-27 Macdermid Graphics Solutions Llc Apparatus for thermal processing of flexographic printing elements

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2279472A1 (en) * 1974-07-26 1976-02-20 Braunschweigische Masch Bau CONTINUOUS OPERATION CENTRIFUGE, IN PARTICULAR SUGAR CENTRIFUGE

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1061711B (en) * 1955-07-22 1959-07-23 Stamicarbon Method and device for dewatering a fine to finely grained solid-liquid mixture
DE1208253B (en) * 1961-07-26 1965-12-30 Braunschweigische Maschb Ansta Continuously working sugar centrifuge
FR1468189A (en) * 1965-03-27 1967-02-03 Hein Wringer for the continuous separation of constituents from mixtures of solids and liquids, in particular sugar turbine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2279472A1 (en) * 1974-07-26 1976-02-20 Braunschweigische Masch Bau CONTINUOUS OPERATION CENTRIFUGE, IN PARTICULAR SUGAR CENTRIFUGE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10391682B2 (en) 2013-08-13 2019-08-27 Macdermid Graphics Solutions Llc Apparatus for thermal processing of flexographic printing elements

Also Published As

Publication number Publication date
DE3066973D1 (en) 1984-04-19
EP0045336B1 (en) 1984-03-14

Similar Documents

Publication Publication Date Title
FR2460720A1 (en) SAND SEPARATOR FOR THE PREPARATION OF CELLULOSIC PASTE
FR2674771A1 (en) IMPROVEMENTS ON SINGLE-STAGE AND MULTI-STAGE CENTRIFUGAL EXTRACTORS.
FR2870100A1 (en) Dust collecting device for vacuum cleaner, has cyclone body including cyclone parts, and hoods connected to upper part of body for directing movement of air between cyclone parts
FR2487661A1 (en) ELECTRIC COFFEE MACHINE COMPRISING A CENTRIFUGAL DRUM-SHAPED FILTER
EP0404647A1 (en) Apparatus of liquid degassing
FR2513104A1 (en) ELECTRIC COFFEE CONTAINING A CENTRIFUGAL FILTER
EP0036793B1 (en) Device for distributing water over a filter filled with granular material, and reuse of the washing water from said filter
EP0052059B1 (en) Pouring spout for a container, comprising means for avoiding delivery variations
EP0045336B1 (en) Continuously operating centrifugal strainers
CH627377A5 (en) CENTRIFUGATION CONTAINER WITH INSULATED COMPARTMENTS AND ROTOR CONTAINING THE SAME.
US3564991A (en) Apparatus to make coffee cream by means of centrifugation
CA1331957C (en) Process for filtering air and cyclone filter with filtering cartridge for implemention of such process
EP0411603B1 (en) Centrifugal juice extractor
CA2044520A1 (en) Granular filter wash water disposal means for said filters cleaned simultancously by water and air
FR2676009A1 (en) MULTI-STAGE CENTRIFUGAL EXTRACTOR.
FR2692910A1 (en) Device and method for reducing syrup formation and impact damage on crystals in a sugar centrifuge.
FR2730174A1 (en) PROCESS AND DEVICE FOR MANUFACTURING AND SEPARATION OF SOLID PARTICLES CONTAINED IN A REFRIGERANT LIQUID BATH OF WHICH THE DENSES OF THE TWO LIQUID AND SOLID PHASES ARE OF CLOSE VALUES
FR2577149A1 (en) Improvements to continuously running centrifugal (spin) driers.
EP0648542A1 (en) Sealed elastically deformable device for removing the residual filter cake layer
FR2916662A1 (en) Device for automatic sorting of gel-capsules with respect to diameter and weight to eliminate capsules, which are empty, under-dosed and single or which have assembly defects, comprises a perforated selection disc with calibrated holes
FR2496498A1 (en) Filtration centrifuge - where perforated filter wall carries radial manometer tubes creating hydrostatic depression which assists filtration
FR3026025A1 (en) CENTRIFUGAL WIPER WITH DISCONTINUOUS MARKET
FR2467882A1 (en) SUGAR CENTRIFUGE WITH CONTINUOUS OPERATION
FR2460616A1 (en) SURFACE WATER DISCHARGE DEVICE FOR AQUARIUM
BE554111A (en)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE GB IT NL SE

17P Request for examination filed

Effective date: 19820319

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE GB IT NL SE

REF Corresponds to:

Ref document number: 3066973

Country of ref document: DE

Date of ref document: 19840419

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19840904

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19840930

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19860831

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19870802

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19880301

GBPC Gb: european patent ceased through non-payment of renewal fee
NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19880503

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19881118

EUG Se: european patent has lapsed

Ref document number: 80401139.3

Effective date: 19880711