EP0226683A1 - Dryer for moist composites - Google Patents

Dryer for moist composites Download PDF

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Publication number
EP0226683A1
EP0226683A1 EP85402504A EP85402504A EP0226683A1 EP 0226683 A1 EP0226683 A1 EP 0226683A1 EP 85402504 A EP85402504 A EP 85402504A EP 85402504 A EP85402504 A EP 85402504A EP 0226683 A1 EP0226683 A1 EP 0226683A1
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EP
European Patent Office
Prior art keywords
drum
pitch
enclosure
zone
pipes
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.)
Withdrawn
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EP85402504A
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German (de)
French (fr)
Inventor
Bernard Allais
Yves Pelletant
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Alstom SA
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Alstom SA
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Publication date
Application filed by Alstom SA filed Critical Alstom SA
Priority to EP85402504A priority Critical patent/EP0226683A1/en
Publication of EP0226683A1 publication Critical patent/EP0226683A1/en
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/18—Machines or apparatus for drying solid materials or objects with movement which is non-progressive on or in moving dishes, trays, pans, or other mainly-open receptacles
    • F26B11/181—Machines or apparatus for drying solid materials or objects with movement which is non-progressive on or in moving dishes, trays, pans, or other mainly-open receptacles the receptacle being a foraminous, perforated or open-structured drum or drum-like container, e.g. rotating around a substantially horizontal or vertical axis; the receptacle being multiple perforated drums, e.g. in superimposed arrangement
    • F26B11/185—Machines or apparatus for drying solid materials or objects with movement which is non-progressive on or in moving dishes, trays, pans, or other mainly-open receptacles the receptacle being a foraminous, perforated or open-structured drum or drum-like container, e.g. rotating around a substantially horizontal or vertical axis; the receptacle being multiple perforated drums, e.g. in superimposed arrangement the drum provided with internal subdivisions or multiple walls
    • F26B11/187—Machines or apparatus for drying solid materials or objects with movement which is non-progressive on or in moving dishes, trays, pans, or other mainly-open receptacles the receptacle being a foraminous, perforated or open-structured drum or drum-like container, e.g. rotating around a substantially horizontal or vertical axis; the receptacle being multiple perforated drums, e.g. in superimposed arrangement the drum provided with internal subdivisions or multiple walls the subdivisions consisting of sector-shaped perforated chambers

Definitions

  • the present invention relates to a device for drying wet composite materials.
  • the invention applies in particular to the drying of so-called cut pasta.
  • One type of known pasta drying installation comprises a line succession of several, generally three, drums supported and driven in rotation by rollers.
  • Each drum comprises a plurality of conduits or conveyor tubes arranged in a ring.
  • These tubes or conduits include a means for advancing the pasta, for example an archimedes screw or similar systems, however these tubes are fixed relative to the drum which alone is driven in rotation, this rotation of the drum ensuring the advancement longitudinal of the pasta in the tubes.
  • each drum is located in a separate enclosure, conditioned at a certain humidity and at a certain temperature and the drive speed of each drum is different from one drum to another, decreasing from the upstream drums to downstream drums.
  • the climate from one enclosure to another is also different.
  • the passage of pasta from one drum to another is ensured through the enclosures separated by chutes.
  • the three drums constitute a single rotary, located in a single enclosure, however provided with partitions so as to allow the creation of different climates from one zone to another, each zone corresponding to a drum.
  • the three drums combined in a single rotary therefore have a common speed of rotation.
  • the advantage of the first system is that, for a given drying time, as the successive drums rotate less and less rapidly, the length of these drums decreases, the layer of dough in each drum obviously increasing.
  • the known solution comprising several drums located in separate enclosures and rotating at decreasing speeds therefore makes it possible to reduce the length of the drums by increasing the thickness of the dough layer of the downstream drums.
  • this solution is complicated because it comprises separate enclosures and several rotary drive devices.
  • the other system with a single enclosure with simple separation veils and several drums rotating at the same speed is much simpler but on the other hand, the thickness of the layer of pasta is constant which does not allow, for a given drying time, to decrease the length of the drums.
  • the present invention aims to achieve a compact system while remaining simple and relates to a device for drying wet composite materials
  • a device for drying wet composite materials comprising an enclosure divided into n climatic zones by partitions and inside which is located a single drum.
  • comprising means for driving in rotation said drum being divided into as many zones as said enclosure, and comprising a plurality of pipes parallel to the axis of the drum and distributed in a circular ring around said axis, each pipe being provided with means causing by the sole rotation of the drum, the axial advance of the materials contained therein, said means comprising inclined surfaces presenting a pitch
  • said drum comprising means for supplying said materials to said conduits and, at the outlet, means for evacuation, characterized in that said pitch has a decreasing value between the inlet and the outlet of the drum.
  • This decrease in the pitch of the advancement means can be carried out in various ways, for example preferably in an area from the drum to the next while being constant in each zone, this decrease in pitch can also be done within each zone of the drum, either in stages or in a continuous manner.
  • the assembly shows a device for drying short pasta. It includes an enclosure 1 divided into three climatic zones 2, 3 and 4 by partitions 5 and 6.
  • a drum 7 supported and driven in rotation by rollers 8 which roll on raceways 9, 10, 11 and 12.
  • This drum 7 comprises a plurality of pipes 13 parallel to the axis ⁇ of the drum and distributed in a circular ring around this axis. These pipes have inclined surfaces having a pitch so as to allow the advancement of the pasta along these pipes during the rotation of the drum.
  • Each surface portion of a series for example the surface portion 15A of the series 15 is connected to two neighboring surface portions 14A and 14B of the surface of the series 14 by an inclined surface portion 16A on the upper half of the height of the surface portions 15A and 14A and by an inclined surface portion 16B on the lower half of the height of the surface portions 15A and 14B.
  • the assembly is closed by two solid lateral faces 17, 18 and by two mesh faces 19 and 20.
  • the circulation of the pasta, during the rotation of the drum is represented by arrows in FIG. 5.
  • the drum 7, like the enclosure 1 is divided into three zones corresponding to the three zones 2, 3, 4 of the enclosure by two partitions internal to the drum 21 and 22.
  • the pasta is introduced into the drum by an introduction chute 23 discharging into a collector 24.
  • the dried pasta is collected by a collector 25 and then discharged into an evacuation chute 26.
  • the pitch of advancement of the conduits 13 is not constant: in the first zone 2 of length L1, the pitch is P1, in the second zone 3 of length L2 the step is P2 ⁇ P1 and in the third zone 4 of length L3, the step is P3 ⁇ P2 ⁇ P1.
  • This variation in pitch could also be done in steps within each zone or even continuously within each zone.
  • FIG. 2 is a cross section of Figure 1.
  • FIG. 1 there is an opening 27 in the lower position of the enclosure 1 for the entry of outside air.
  • FIG. 1 there is such an opening 27 for each zone 2, 3, and 4.
  • a heating coil 28 constituted for example by finned tubes in which hot water circulates.
  • a circulation fan 29 driven by a motor 30 sucks through this heating coil 28 and discharges downwards.
  • an extraction sheath 31 provided with shutters with flaps 32 is located in the high position on the face opposite the inlet 27.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The dryer comprises an enclosure (1) divided into n climatic zones (2, 3, 4) by partitions (5, 6) and inside which a single drum (7) is situated which comprises means of setting in rotation (8), said drum being divided into as many zones as said enclosure and comprising a plurality of pipes (13) parallel to the axis ( DELTA ) of the drum and distributed in a circular ring about said axis, each pipe being equipped with means which bring about, by rotation of the drum alone, the axial advance of the materials contained therein, said means comprising inclined surfaces having a pitch, said drum comprising means of supply (23, 24) of said materials to said pipes and, at the exit, means of evacuation (25, 26), characterised in that said pitch of said pipes has a value which decreases between the entrance and the exit of the drum. <IMAGE>

Description

La présente invention concerne un dispositif de séchage de ma­tières composites humides.The present invention relates to a device for drying wet composite materials.

L'invention s'applique en particulier pour le séchage de pâtes alimentaires dites coupées.The invention applies in particular to the drying of so-called cut pasta.

Un type d'installation connue de séchage de pâtes comporte une succession en ligne de plusieurs, généralement trois, tambours support­tés et entraînés en rotation par des galets. Chaque tambour comprend une pluralité de conduites ou tubes convoyeurs disposés en couronne. Ces tubes ou conduites comprennent un moyen pour faire avancer les pâtes, par exemple une vis d'archimède ou bien des systèmes similaires, cependant ces tubes sont fixes par rapport au tambour qui seul est entraîné en rotation, cette rotation du tambour assurant l'avancée longitudinale des pâtes dans les tubes.One type of known pasta drying installation comprises a line succession of several, generally three, drums supported and driven in rotation by rollers. Each drum comprises a plurality of conduits or conveyor tubes arranged in a ring. These tubes or conduits include a means for advancing the pasta, for example an archimedes screw or similar systems, however these tubes are fixed relative to the drum which alone is driven in rotation, this rotation of the drum ensuring the advancement longitudinal of the pasta in the tubes.

Selon une première réalisation connue, chaque tambour est situé dans une enceinte séparée, climatisée à une certaine humidité et à une certaine température et la vitesse d'entraînement de chaque tambour est différente d'un tambour à l'autre, décroissante des tambours amonts vers les tambours avals.According to a first known embodiment, each drum is located in a separate enclosure, conditioned at a certain humidity and at a certain temperature and the drive speed of each drum is different from one drum to another, decreasing from the upstream drums to downstream drums.

Le climat d'une enceinte à l'autre est aussi différent. Le pas­sage des pâtes d'un tambour à l'autre est assuré au travers les encein­tes séparées par des goulottes.The climate from one enclosure to another is also different. The passage of pasta from one drum to another is ensured through the enclosures separated by chutes.

Dans d'autres réalisations connues, les trois tambours constituent une seule rotante, située dans une enceinte unique, cepen­dant munie de cloisons de manière à permettre la création de climats différents d'une zone à l'autre, chaque zone correspondant à un tambour. Dans ce type de réalisation, les trois tambours réunis en une seule rotante ont donc une vitesse commune de rotation.In other known embodiments, the three drums constitute a single rotary, located in a single enclosure, however provided with partitions so as to allow the creation of different climates from one zone to another, each zone corresponding to a drum. In this type of embodiment, the three drums combined in a single rotary therefore have a common speed of rotation.

L'avantage du premier système, c'est que, pour un temps de sé­chage donné, comme les tambours successifs tournent de moins en moins rapidement, la longueur de ces tambours diminue, la couche de pâte dans chaque tambour allant évidemment en croissant.The advantage of the first system is that, for a given drying time, as the successive drums rotate less and less rapidly, the length of these drums decreases, the layer of dough in each drum obviously increasing.

Il apparaît en effet que les qualités requises pour les pâtes, c'est-à-dire essentiellement une couleur attractive, une absence de gerçures et une bonne tenue à la cuisson peuvent être obtenues au cours du séchage et avec un minimum de coût par une évolution du couple température-humidité de l'air de séchage selon des critères déterminés expérimentalement, qui minimise en même temps la durée du séchage, à condition que l'épaisseur de la couche de produits à sécher soit main­tenue à une épaisseur toujours maximale et croissante au fur et à mesure de la diminution du taux d'humidité du produit traité.It appears in fact that the qualities required for pasta, that is to say essentially an attractive color, an absence of cracking and good resistance to cooking can be obtained during drying and at a minimum cost by changing the temperature-humidity couple of the drying air according to criteria determined experimentally, which at the same time minimizes the drying time , provided that the thickness of the layer of products to be dried is kept at a thickness that is always maximum and increasing as the humidity of the treated product decreases.

La solution connue comportant plusieurs tambours situés dans des enceintes séparées et tournant à vitesses décroissantes permet donc de réduire la longueur des tambours en augmentant l'épaisseur de la cou­che de pâte des tambours avals. Cependant cette solution est compliquée car elle comporte des enceintes séparées et plusieurs dis­positifs d'entraînement en rotation.The known solution comprising several drums located in separate enclosures and rotating at decreasing speeds therefore makes it possible to reduce the length of the drums by increasing the thickness of the dough layer of the downstream drums. However, this solution is complicated because it comprises separate enclosures and several rotary drive devices.

Par contre, l'autre système à enceinte unique avec simples voiles de séparation et plusieurs tambours tournant à vitesse identique est beaucoup plus simple mais d'un autre côté, l'épaisseur de la couche de pâtes est constante ce qui ne permet pas, pour un temps donné de séchage, de diminuer la longueur des tambours.On the other hand, the other system with a single enclosure with simple separation veils and several drums rotating at the same speed is much simpler but on the other hand, the thickness of the layer of pasta is constant which does not allow, for a given drying time, to decrease the length of the drums.

La présente invention a pour but de réaliser un système compact tout en restant simple et a pour objet un dispositif de séchage de matières composites humides comprenant une enceinte divisée en n zones climatiques par des cloisons et à l'intérieur de laquelle est située un tambour unique comportant des moyens d'entraînement en rotation, ledit tambour étant divisé en autant de zones que ladite enceinte, et compor­tant une pluralité de conduites parallèles à l'axe du tambour et répar­ties en couronne circulaire autour dudit axe, chaque conduite étant munie de moyens provoquant par la seule rotation du tambour l'avancée axiale des matières y contenues, lesdits moyens comportant des surfaces inclinées présentant un pas, ledit tambour comportant des moyens d'alimentation en dites matières des dites conduites et, en sortie, des moyens d'évacuation, caractérisé en ce que ledit pas a une valeur décroissante entre l'entrée et la sortie du tambour.The present invention aims to achieve a compact system while remaining simple and relates to a device for drying wet composite materials comprising an enclosure divided into n climatic zones by partitions and inside which is located a single drum. comprising means for driving in rotation, said drum being divided into as many zones as said enclosure, and comprising a plurality of pipes parallel to the axis of the drum and distributed in a circular ring around said axis, each pipe being provided with means causing by the sole rotation of the drum, the axial advance of the materials contained therein, said means comprising inclined surfaces presenting a pitch, said drum comprising means for supplying said materials to said conduits and, at the outlet, means for evacuation, characterized in that said pitch has a decreasing value between the inlet and the outlet of the drum.

Cette décroissance du pas des moyens d'avancement peut être ef­fectuée de diverses manières, par exemple de façon préférée d'une zone du tambour à la suivante tout en étant constant dans chaque zone, cette décroissance du pas peut aussi se faire au sein de chaque zone du tambour, soit par paliers, soit d'une façon continue.This decrease in the pitch of the advancement means can be carried out in various ways, for example preferably in an area from the drum to the next while being constant in each zone, this decrease in pitch can also be done within each zone of the drum, either in stages or in a continuous manner.

Ainsi, grâce à l'invention on réalise un système très simple à rotante unique donc à entraînement unique et une seule enceinte cloi­sonnée par zones comme la rotante, tout en réalisant en système écourté par le fait que le pas d'avancement allant en décroissant, cela permet de faire un ensemble plus court pour une même durée de séchage.Thus, thanks to the invention there is provided a very simple system with a single rotary therefore with a single drive and a single enclosure partitioned by zones like the rotary, while achieving in a system shortened by the fact that the advancement step decreasing, this makes it possible to make a shorter assembly for the same drying time.

On va maintenant donner la description d'un exemple de mise en oeuvre de l'invention en se référant au dessin ci-joint dans lequel :

  • La figure 1 représente un dispositif de séchage de pâtes courtes, selon l'invention.
  • La figure 2 est une coupe transversale du dispositif de la figure 1.
  • La figure 3 montre d'une manière isolée, en coupe selon III-III de la figure 4, une conduite d'avancement des pâtes du dispositif de l'invention.
  • La figure 4 montre la conduite vue de dessus.
  • La figure 5 est une vue agrandie montrant en perspective une portion de conduite conforme aux figures 3 et 4.
We will now give the description of an example of implementation of the invention with reference to the attached drawing in which:
  • FIG. 1 represents a device for drying short pasta, according to the invention.
  • Figure 2 is a cross section of the device of Figure 1.
  • Figure 3 shows in isolation, in section along III-III of Figure 4, a line for advancing the pasta of the device of the invention.
  • Figure 4 shows the pipe seen from above.
  • FIG. 5 is an enlarged view showing in perspective a portion of pipe in accordance with FIGS. 3 and 4.

En se référant aux figures 1 et 2, l'ensemble montre un disposi­tif de séchage de pâtes courtes. Il comprend une enceinte 1 divisée en trois zones climatiques 2, 3 et 4 par des cloisons 5 et 6.Referring to Figures 1 and 2, the assembly shows a device for drying short pasta. It includes an enclosure 1 divided into three climatic zones 2, 3 and 4 by partitions 5 and 6.

A l'intérieur de cette enceinte est disposé un tambour 7 support­té et entraîné en rotation par des galets 8 qui roulent sur des chemins de roulement 9, 10, 11 et 12.Inside this enclosure is arranged a drum 7 supported and driven in rotation by rollers 8 which roll on raceways 9, 10, 11 and 12.

Ce tambour 7 comprend une pluralité de conduites 13 parallèles à l'axe Δ du tambour et réparties en couronne circulaire autour de cet axe. Ces conduites comportent des surfaces inclinées présentant un pas de façon à permettre l'avancement des pâtes le long de ces conduites lors de la rotation du tambour.This drum 7 comprises a plurality of pipes 13 parallel to the axis Δ of the drum and distributed in a circular ring around this axis. These pipes have inclined surfaces having a pitch so as to allow the advancement of the pasta along these pipes during the rotation of the drum.

Diverses solutions peuvent être utilisées pour ces conduites, il peut s'agir de vis d'archimède dont la surface cylindrique externe est grillagée de manière à permettre la libre circulation de l'air et de l'humidité. Dans l'exemple décrit, il ne s'agit pas de vis d'archimède mais, comme le montrent les figures 3, 4 et 5, de conduites compor­ tant deux séries de portions de surfaces planes parallèles 14 d'une part et 15 d'autre part, la série de portions de surfaces 15 étant décalée par rapport à la série de portion de surfaces 14.Various solutions can be used for these pipes, it can be archimedes screws whose external cylindrical surface is screened so as to allow the free circulation of air and humidity. In the example described, it is not an archimedean screw but, as shown in FIGS. 3, 4 and 5, of conduits both series of portions of parallel planar surfaces 14 on the one hand and 15 on the other hand, the series of portions of surfaces 15 being offset with respect to the series of portions of surfaces 14.

Chaque portion de surface d'une série, par exemple la portion de surface 15A de la série 15 est reliée à deux portions de surface voisi­nes 14A et 14B de surface de la série 14 par une portion de surface inclinée 16A sur la moitié supérieure de la hauteur des portions de surface 15A et 14A et par une portion de surface inclinée 16B sur la moitié inférieure de la hauteur des portions de surface 15A et 14B. L'ensemble est fermé par deux faces latérales pleines 17, 18 et par deux faces grillagées 19 et 20. La circulation des pâtes, lors de la rotation du tambour est représentée par des flèches sur la figure 5.Each surface portion of a series, for example the surface portion 15A of the series 15 is connected to two neighboring surface portions 14A and 14B of the surface of the series 14 by an inclined surface portion 16A on the upper half of the height of the surface portions 15A and 14A and by an inclined surface portion 16B on the lower half of the height of the surface portions 15A and 14B. The assembly is closed by two solid lateral faces 17, 18 and by two mesh faces 19 and 20. The circulation of the pasta, during the rotation of the drum is represented by arrows in FIG. 5.

Pour la facilité du dessin, la section de la conduite a été représentée rectangulaire sur la figure 5. En réalité il s'agit plutôt d'une section voisine d'un secteur de couronne circulaire. Ce type de conduites est d'ailleurs connue en soi.For ease of drawing, the section of the pipe has been shown rectangular in FIG. 5. In reality it is rather a neighboring section of a circular crown sector. This type of pipe is moreover known per se.

En revenant à la figure 1, on voit que le tambour 7, de même que l'enceinte 1 est divisée en trois zones correspondantes aux trois zones 2, 3, 4 de l'enceinte par deux cloisons internes au tambour 21 et 22.Returning to FIG. 1, it can be seen that the drum 7, like the enclosure 1, is divided into three zones corresponding to the three zones 2, 3, 4 of the enclosure by two partitions internal to the drum 21 and 22.

Les pâtes sont introduites dans le tambour par une goulotte d'introduction 23 se déversant dans un collecteur 24. A la sortie du tambour, les pâtes séchées sont receuillies par un collecteur 25 puis déversées dans une goulotte d'évacuation 26.The pasta is introduced into the drum by an introduction chute 23 discharging into a collector 24. At the outlet of the drum, the dried pasta is collected by a collector 25 and then discharged into an evacuation chute 26.

Comme on le voit sur les figures 1, 3 et 4, le pas d'avancement des conduites 13 n'est pas constant : dans la première zone 2 de lon­gueur L1, le pas est P1, dans la deuxième zone 3 de longueur L2 le pas est P2< P1 et dans la troisième zone 4 de longueur L3, le pas est P3< P2< P1.As can be seen in FIGS. 1, 3 and 4, the pitch of advancement of the conduits 13 is not constant: in the first zone 2 of length L1, the pitch is P1, in the second zone 3 of length L2 the step is P2 <P1 and in the third zone 4 of length L3, the step is P3 <P2 <P1.

Grâce à cette variation de pas d'une zone à l'autre, cela permet d'obtenir, pour un temps de séchage donné, un ensemble plus court puisque le pas se rétrécissant les denrées avancent de moins en moins vite. En contre-partie bien entendu, l'épaisseur de la couche de pâte va en augmentant de l'entrée vers la sortie mais on a constaté que cela n'altérait en rien la qualité à condition de régler convenablement la température des différentes zones 2, 3, et 4.Thanks to this variation in pitch from one zone to another, this makes it possible to obtain, for a given drying time, a shorter assembly since the pitch shrinking the foodstuffs advance less and less quickly. In return, of course, the thickness of the dough layer increases from the inlet to the outlet, but it has been found that this does not in any way affect the quality provided that the temperature of the different zones 2, 3, and 4.

Cette variation de pas, pourrait également être faite par palier au sein de chaque zone ou encore de manière continue au sein de chaque zone.This variation in pitch could also be done in steps within each zone or even continuously within each zone.

La figure 2 est une coupe transversale de la figure 1. Dans cette figure, on voit une ouverture 27 en position basse de l'enceinte 1 pour l'entrée de l'air extérieur. Il existe une telle ouverture 27 pour chaque zone 2, 3, et 4. En partie supérieure de cha­que zone également est située une batterie de chauffage 28 constituée par exemple par des tubes à ailettes dans lesquels circule de l'eau chaude. Un ventilateur de circulation 29 entraîné par un moteur 30 aspire à travers cette batterie de chauffage 28 et refoule vers le bas. Enfin une gaine d'extraction 31 munie d'ouies à volets 32 est située en position haute sur la face opposée à l'entrée 27.Figure 2 is a cross section of Figure 1. In this figure, there is an opening 27 in the lower position of the enclosure 1 for the entry of outside air. There is such an opening 27 for each zone 2, 3, and 4. Also in the upper part of each zone is a heating coil 28 constituted for example by finned tubes in which hot water circulates. A circulation fan 29 driven by a motor 30 sucks through this heating coil 28 and discharges downwards. Finally, an extraction sheath 31 provided with shutters with flaps 32 is located in the high position on the face opposite the inlet 27.

Claims (4)

1/ Dispositif de séchage de matières composites humides comprenant une enceinte (1) divisée en n zones climatiques (2, 3, 4) par des cloi­sons (5, 6) et à l'intérieur de laquelle est situé un tambour unique (7) comportant des moyens d'entraînement en rotation (8), ledit tambour étant divisé en autant de zones que ladite enceinte, et compor­tant une pluralité de conduites (13) parallèles à l'axe (Δ) du tambour et réparties en couronne circulaire autour dudit axe, chaque conduite étant munie de moyens provoquant par la seule rotation du tambour, l'avancée axiale des matières y contenues, lesdits moyens comportant des surfaces inclinées présentant un pas, ledit tambour comportant des moyens d'alimentation (23, 24) en dites matières des dites conduites et, en sortie, des moyens d'évacuation (25, 26), ca­ractérisé en ce que ledit pas desdites conduites a une valeur décrois­sante entre l'entrée et la sortie du tambour.1 / Device for drying wet composite materials comprising an enclosure (1) divided into n climatic zones (2, 3, 4) by partitions (5, 6) and inside which is located a single drum (7) comprising rotation drive means (8), said drum being divided into as many zones as said enclosure, and comprising a plurality of conduits (13) parallel to the axis (Δ) of the drum and distributed in a circular ring around said axis, each pipe being provided with means causing by the sole rotation of the drum, the axial advancement of the materials contained therein, said means comprising inclined surfaces having a pitch, said drum comprising means for supplying (23, 24) said materials of said pipes and, at the outlet, evacuation means (25, 26), characterized in that said pitch of said pipes has a decreasing value between the inlet and the outlet of the drum. 2/ Dispositif de séchage selon la revendication 1, caractérisé en ce que dans chaque conduite ledit pas varie d'une zone à l'autre en étant constant dans chacune.2 / A drying device according to claim 1, characterized in that in each pipe said pitch varies from one zone to another while being constant in each. 3/ Dispositif de séchage selon la revendication 1, caractérisé en ce que dans chaque conduite, ledit pas varie par palier au sein de chaque zone.3 / A drying device according to claim 1, characterized in that in each pipe, said pitch varies in stages within each zone. 4/ Dispositif de séchage selon la revendication 1, caractérisé en ce que dans chaque conduite ledit pas varie d'une manière continue au sein de chaque zone.4 / A drying device according to claim 1, characterized in that in each pipe said pitch varies continuously within each zone.
EP85402504A 1985-12-16 1985-12-16 Dryer for moist composites Withdrawn EP0226683A1 (en)

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EP85402504A EP0226683A1 (en) 1985-12-16 1985-12-16 Dryer for moist composites

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EP85402504A EP0226683A1 (en) 1985-12-16 1985-12-16 Dryer for moist composites

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EP0226683A1 true EP0226683A1 (en) 1987-07-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110328775A (en) * 2019-07-18 2019-10-15 南京汇科高分子材料有限公司 It is a kind of for producing the drying box of glass edge-wrapping polyurethane combined material

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR888387A (en) * 1942-04-23 1943-12-10 Rotary dryer for seeds, pulps, powders and cut pasta
EP0142652A1 (en) * 1983-09-22 1985-05-29 Bühler AG Heat-treating machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR888387A (en) * 1942-04-23 1943-12-10 Rotary dryer for seeds, pulps, powders and cut pasta
EP0142652A1 (en) * 1983-09-22 1985-05-29 Bühler AG Heat-treating machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110328775A (en) * 2019-07-18 2019-10-15 南京汇科高分子材料有限公司 It is a kind of for producing the drying box of glass edge-wrapping polyurethane combined material
CN110328775B (en) * 2019-07-18 2024-04-05 南京汇科高分子材料有限公司 A drying cabinet for producing glass is bordured and is used polyurethane combined material

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