EP0846554A2 - Machine for compressing solid materials - Google Patents
Machine for compressing solid materials Download PDFInfo
- Publication number
- EP0846554A2 EP0846554A2 EP97830637A EP97830637A EP0846554A2 EP 0846554 A2 EP0846554 A2 EP 0846554A2 EP 97830637 A EP97830637 A EP 97830637A EP 97830637 A EP97830637 A EP 97830637A EP 0846554 A2 EP0846554 A2 EP 0846554A2
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- EP
- European Patent Office
- Prior art keywords
- cylinders
- teeth
- machine according
- materials
- holes
- 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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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/22—Extrusion presses; Dies therefor
- B30B11/28—Extrusion presses; Dies therefor using perforated rollers or discs
Definitions
- the present invention relates to a machine for compaction of solid materials.
- the main object of the present invention is to offer a machine for compaction solid materials of simple manufacture, economical, reliable and operational with low energy expenditure.
- the advantages which derive from the present invention basically consist of what is possible work with materials of a different nature, otenant compaction with a large reduction of volume so as to obtain a finished product with optimal cohesion characteristics and suitable for different forms of related employee the nature of the materials treated; that a machine according to the invention is manufacturing simple, economical and reliable even after a while extended use; that spending energetics are greatly reduced; that it is possible carry out any warming or cooling of materials during compacting, with a reduction in the time required to complete the processing; that the material is can be shaped so as to obtain "dumplings", that is to say small compact blocks, with cross-section either circular than polygonal in length volue.
- fig. 1 shows a partial view in perspective of a machine according to the invention
- fig. 2 shows a front view of the machine of fig. 1
- fig. 3 represents a partial plan view of a machine cylinder of fig. 1
- fig. 4 represents a detail of the cylinders of the machine fig. 1 in exercise position
- figs. 5,6,7, and 8 represent alternative forms of realization of the means for the subdivision of product in treatment in length elements predetermined.
- a machine for compaction of solid materials in accordance with the invention comprises at least one pair of counter-rolling hollow cylinders (1,2) side by side and engaged by means of helical teeth (10,20) respectively, so as to compress the materials (M) supplied in correspondence with the setting area (Z) of the teeth (10,20) by the opposite direction of the cylinders (1,2) around the respective axes (a-a): each said cylinders (1,2) being provided, in correspondence of the grooves (G) delimited by the teeth (10,20), of a plurality of through holes able to delimit corresponding channels (100) to through which the shaping materials are forced to go through compression effect exerted by the teeth (10,20) taking the form of cylindrical bars (b) of section basically corresponding to the output channels (100) and oriented towards the cavities (CA) internal of the cylinders (1,2).
- the external profile (EG) of the grooves (G) of cylinders (1,2) is shaped convex, with the convexity facing outwards and, in the same way, the external profile (ED) of the front of the teeth (10,20) of the cylinders (1,2) is convex shape, with the convexity facing outside.
- each groove (G) is arranged so that the plan projections of the respective centers result aligned on a line segment forming a predetermined angle ( ⁇ ) relative to the axis of rotation (a-a).
- Said angle ( ⁇ ) can be advantageously chosen based on the condition that the plane distance (d) between the center of the holes (100a, 100b) more distant from each other is equal to the diameter, constant, of the entry section (I) of the holes same.
- Said cylinders (1,2) are suitably provided an envelope, except that in the grip area (z) respective teeth (10,20).
- each channel (100) is in truncated cone with the walls converging towards the exit.
- the opening angle of the truncated cone can be, for example example, equal to 60 °.
- the outlet section of the channels (100) can be either circular than polygonal.
- a fixed body (3) developed orthogonally to the axes of rotation of the cylinders mentioned above (1,2) and with an end facing the teeth grip area (Z) (10m20), which body (3) has two edges (30) converging towards said end, so as to operate, during rotation of the cylinder (1,2), a shaving action, i.e. cleaning the external surface of the teeth (10.20) by grinding the material which has remained strangled at the treatment and forcing him to enter between the openings of the teeth which follow - according to the line of rotation - and so allowing circulation.
- said means include a truncated cone shaped body (4) with the minor base facing outwards from the machine and housed in the cavity (CA) of the cylinder, fixed coaxially on the same shaft, so that turn solidly with it.
- the bars (B) outgoing from the channels (100) are intercepted by the surface of the body (4) and thus sectioned in basically length elements corresponding to the distance between the section of exit of each channel and said surface, by effect folding and the consequent loss of cohesion derived from it.
- said means include a fixed spatula (5) arranged in the cavity (CA) of the shaped and folded cylinder so as to operate either the cutting of the bars (B) outgoing from the channels (100) and carried by the cylinder in rotation, that routing to the external elements that have been cut.
- a fixed spatula (5) arranged in the cavity (CA) of the shaped and folded cylinder so as to operate either the cutting of the bars (B) outgoing from the channels (100) and carried by the cylinder in rotation, that routing to the external elements that have been cut.
- the means of subdivision of the bars (B) include a cylinder (40) internal to the toothed cylinder (1,2) and provided with several channels (41) where the axes form a predetermined angle with the axes of the holes (100) correspondents of the cylinder (1,2).
- Said cylinders (1,2) can be conveniently provided with longitudinal channels (6) almost provided in correspondence of one or more of the gorges (G) to allow the circulation of heating or cooling fluids which can be supplied by means of an installation not shown for simplicity in figures of the attached drawings.
- the machine described is capable of working solid materials of different nature, such as example food substances and for the production of animal feed, destroyed, industrial and similar wastes.
- the product finished can be advantageously used as alternative fuel for the supply of suitable burners, already known per se.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing And Processing Devices For Dough (AREA)
- Glass Compositions (AREA)
- Centrifugal Separators (AREA)
- Press Drives And Press Lines (AREA)
- Disintegrating Or Milling (AREA)
Abstract
Description
La présente invention concerne une machine pour le compactage de matériaux solides.The present invention relates to a machine for compaction of solid materials.
Il est connu que en plusiuer secteur, comme ces qui concernent le façonnage des substances alimentaires et aliments pour animaux, et ces pour le traitement des détruits et déchets industriels, est particulièrement sentie la necessité du compactage des matériaux solides dans le but d'en réduire le volume et au même temps modeler une forme geométrique prédéterminée au produit fini, c'est-à dire le compact.It is known that in addition to sector, as these which concern the shaping of substances food and feed, and these for processing of destroyed and industrial waste, is particularly felt the need for compacting solid materials for the purpose of reduce the volume and at the same time shape a geometrical shape predetermined to the finished product, that is to say the compact.
Le but principal de la présente invention est celui de proposer une machine pour le compactage des matériaux solides de fabrication simple, économique, fiable et opérationelle avec des dépenses énergetiques basses.The main object of the present invention is to offer a machine for compaction solid materials of simple manufacture, economical, reliable and operational with low energy expenditure.
A ce résultat on est parvenus conformément à
l'invention en adoptant l'idée de réaliser une
machine ayant les caractéristiques décrites dans la
revendication 1. D'autres caractéristiques font
l'objet des revendications dépendantes.This was achieved in accordance with
the invention by adopting the idea of making a
machine having the characteristics described in the
Les avantages qui dérivent de la présente invention consistent essentiellement en ce qu'il est possible travailler des matériaux de nature différente, en otenant le compactage avec une grande réduction de volume de manière à obtenir un produit fini avec des caractéristiques de cohésion optimales et déstinable à différentes forme d'employ en relation à la nature des matériaux traités; qu'une machine conformément à l'invention est de fabrication simple, économique et fiable même après un temps prolongé d'utilisation; que les dépenses énergetiques sont fortement reduites; qu'il est possible proceder au réchauffement éventuel ou au refroidissement des matériaux pendant le compactage, avec une réduction du temps nécessaire pour en terminer le traitement; que le matériel est façonnable de manière à obtenir des "boulettes", c'est-à-dire des petits blocs compacts, à section soit circulaire que polygonale de la longueur volue.The advantages which derive from the present invention basically consist of what is possible work with materials of a different nature, otenant compaction with a large reduction of volume so as to obtain a finished product with optimal cohesion characteristics and suitable for different forms of related employee the nature of the materials treated; that a machine according to the invention is manufacturing simple, economical and reliable even after a while extended use; that spending energetics are greatly reduced; that it is possible carry out any warming or cooling of materials during compacting, with a reduction in the time required to complete the processing; that the material is can be shaped so as to obtain "dumplings", that is to say small compact blocks, with cross-section either circular than polygonal in length volue.
Ces avantages et caractérisitiques de l'invention ainsi que d'autres seront plus et mieux compris de chaque homme du métier à la lumiere de la description qui va suivre et à l'aide des dessins annexés donnés à titre d'exemplification pratique d'une forme concrète de réalisation, mais à ne pas considérer dans le sens limitatif; dessins sur lesquels: la fig. 1 représente une vue partielle en perspective d'une machine conformément à l'invention; la fig. 2 représente une vue frontale de la machine de la fig. 1; la fig. 3 représente une vue en développement partiel en plan d'un cylindre de la machine de la fig. 1; la fig. 4 représente un détail des cylindres de la machine de la fig. 1 en position d'exercice; les figs. 5,6,7, et 8 représentent des formes alternatives de réalisation des moyens pour la subdivision des produit en traitement en éléments de longueur prédéterminée.These advantages and characteristics of the invention as well as others will be more and better understood of each skilled person in the light of description which follows and using the drawings attached given as a practical example of a concrete form of realization, but not to consider in the limiting sense; designs on which: fig. 1 shows a partial view in perspective of a machine according to the invention; fig. 2 shows a front view of the machine of fig. 1; fig. 3 represents a partial plan view of a machine cylinder of fig. 1; fig. 4 represents a detail of the cylinders of the machine fig. 1 in exercise position; figs. 5,6,7, and 8 represent alternative forms of realization of the means for the subdivision of product in treatment in length elements predetermined.
Réduite à sa structure essentielle et en référence aux figures des dessins annexés, una machine pour le compactage de matériaux solides conformément à l'invention comprend au moins une paire de cylindres (1,2) creux côte à côte contre-roulants et engagés au moyen des dentures hélicoïdales (10,20) respectives, de manière à comprimer les matériaux (M) alimentés en correspondance de la zone de prise (Z) des dentures (10,20) par effet de la rotation en direction opposée des cylindres (1,2) autour aux axes respectifs (a-a): chacun desdits cylindres (1,2) étant pourvu, en correspondance des gorges (G) délimitées par le dentures (10,20), d'une pluralité de trous passants aptes à délimiter des canaux correspondants (100) à travers lesquels les matériaux en façonnage sont obligés à passer par effet de la compression exercée par le dents (10,20) en prenant la forme de barrettes cylindriques (b) de section fondamentalement correspondante à celle de sortie des canaux (100) et orientées vers les cavités (CA) intérnes des cylindres (1,2).Reduced to its essential structure and in reference in the figures of the accompanying drawings, a machine for compaction of solid materials in accordance with the invention comprises at least one pair of counter-rolling hollow cylinders (1,2) side by side and engaged by means of helical teeth (10,20) respectively, so as to compress the materials (M) supplied in correspondence with the setting area (Z) of the teeth (10,20) by the opposite direction of the cylinders (1,2) around the respective axes (a-a): each said cylinders (1,2) being provided, in correspondence of the grooves (G) delimited by the teeth (10,20), of a plurality of through holes able to delimit corresponding channels (100) to through which the shaping materials are forced to go through compression effect exerted by the teeth (10,20) taking the form of cylindrical bars (b) of section basically corresponding to the output channels (100) and oriented towards the cavities (CA) internal of the cylinders (1,2).
Avantageusement, le profil extérieur (EG) des gorges (G) des cylindres (1,2) est de forme convexe, avec la convexité tournée vers l'extérieur et, de la même menière, le profil extérieur (ED) du front des dents (10,20) des cylindres (1,2) est de forme convexe, avec la convexité tournée vers l'extérieur.Advantageously, the external profile (EG) of the grooves (G) of cylinders (1,2) is shaped convex, with the convexity facing outwards and, in the same way, the external profile (ED) of the front of the teeth (10,20) of the cylinders (1,2) is convex shape, with the convexity facing outside.
En outre, avantageusement, les trous (100) de chaque gorge (G) sont disposés de manière que les projections en plan des centres respectifs résultent alignés sur un segment de droite formant un angle (β) prédéterminé par rapport à l'axe de rotation (a-a).In addition, advantageously, the holes (100) of each groove (G) are arranged so that the plan projections of the respective centers result aligned on a line segment forming a predetermined angle (β) relative to the axis of rotation (a-a).
Ledit angle (β) peut être avanteguesement choisi sur la base de la condition que la distance en plan (d) entre les centre des trous (100a, 100b) plus distants entre eux soit égale au diamètre, constant, de la section d'entrée (I) des trous mêmes.Said angle (β) can be advantageously chosen based on the condition that the plane distance (d) between the center of the holes (100a, 100b) more distant from each other is equal to the diameter, constant, of the entry section (I) of the holes same.
De telle façon, comme il est schématiquement réprésenté dans la fig. 4 des dessins annexés, avec la rotation en direction opposée des cylindres (1,2) il y a un seul point (P) de contact instantané entre la surface externe (ED) d'une dent (10,20) d'un cylindre et la surface externe (EG) de la gorge correspondante (G) de l'autre cylindre.In such a way, as it is schematically shown in fig. 4 of the accompanying drawings, with the opposite direction of the cylinders (1,2) there is only one point (P) of contact snapshot between the external surface (ED) of a tooth (10,20) of a cylinder and the outer surface (EG) of the corresponding throat (G) of the other cylinder.
Les gas sortants des matériaux (M) à la suite de la compression sortent de l'éspace compris entre les surfaces des dents (10,20) en prise (fleches F de la fig. 4). Tout ce-ci permet de réduire au minimum la puissance nécessaire au functionnement de la machine.The gases leaving the materials (M) following the compression come out of the space between surfaces of the teeth (10,20) in engagement (arrows F of fig. 4). All of this helps to minimize the power required to operate the machine.
Lesdits cylindres (1,2) sont opportunement pourvus d'une enveloppe, sauf que dans la zone de prise (z) des dentures respectives (10,20). Said cylinders (1,2) are suitably provided an envelope, except that in the grip area (z) respective teeth (10,20).
Avantageusement, conformément à l'invention, la section d'entrée de chaque canaux (100) est en tronc de cône avec les parois convergentes vers la sortie.Advantageously, in accordance with the invention, the input section of each channel (100) is in truncated cone with the walls converging towards the exit.
L'angle d'ouverture du tronc de cône peut être, par exemple, égal à 60°.The opening angle of the truncated cone can be, for example example, equal to 60 °.
La section de sortie des canaux (100) peut être soit circulaire que polygonale.The outlet section of the channels (100) can be either circular than polygonal.
En position opposée à la station (AM) d'alimentation des matériaux à traiter, il est avantageusement prévu un corps fixe (3) développé orthogonalement aux axes de rotation des cylindres précités (1,2) et avec un'extrémité tournée vers la zone (Z) de prise des dents (10m20), lequel corps (3) présent deux bords (30) convergents vers ladite extrémité, de manière à opérer, pendant la rotation du cylindre (1,2), un'action de rasage, c'est-à-dire de nettoyage, de la surface externe des dents (10,20) en broyant le matériel qui est resté étrangé au traitement et en l'obligeant à s'introduire entre les ouvertures des dents qui suivent - selon le vers de la rotation - et ainsi en permettant la circulation.Opposite the station (AM) supply of the materials to be treated, it is advantageously provided a fixed body (3) developed orthogonally to the axes of rotation of the cylinders mentioned above (1,2) and with an end facing the teeth grip area (Z) (10m20), which body (3) has two edges (30) converging towards said end, so as to operate, during rotation of the cylinder (1,2), a shaving action, i.e. cleaning the external surface of the teeth (10.20) by grinding the material which has remained strangled at the treatment and forcing him to enter between the openings of the teeth which follow - according to the line of rotation - and so allowing circulation.
Avantageusement, conformément à l'invention, dans une cavité (CA) de chacun des cylindres (1,2) sont prévus des moyens pour réduire lesdites barrettes (B) en éléments de longueur prédéterminée. Selon une première forme de réalisation, en référence à la fig. 5 des dessins annexés, lesdits moyens comprennent un corps (4) de forme de tronc de cône avec la base mineure tournée vers l'extérieure de la machine et logé dans la cavité (CA) du cylindre, fixé coaxial sur le même arbre, de manière à tourner solidairement avec celui-ci. Les barrettes (B) sortantes des canaux (100) sont interceptées par la surface du corps (4) et ainsi sectionnées en éléments de longueure fondamentalement correspondante à la distance entre la section de sortie de chaque canal et ladite surface, par effet du pliage et de la perte conséquente de cohésion locale qui en dérive. Les éléments courts ou "boulettes" ainsi obtenus résultent dirigés par glissement sur la surface du même corps (4) vers l'extérieure - où des moyens de prélèvement et de transport à bandes ne pas représentés dans le dessin sont prévus -. En alternatives, en référence à la fig. 6 des dessins annexés, lesdits moyens comprennent une spatule fixe (5) disposée dans la cavité (CA) du cylindre façonnée et pliée de manière à opérer soit la coupe des barrettes (B) sortantes des canaux (100) et portées par le cylindre en rotation, que l'acheminement à l'externe des éléments qui ont été coupés. Selon une autre forme alternative de réalisation et en référence aux schémas des figs. 7 et 8, les moyens de subdivision des barrettes (B) comprennent un cylindre (40) intérne au cylindre denté (1,2) et pourvu de plusieurs canaux (41) où les axes forment un angle prédéterminé avec les axes des trous (100) correspondants du cylindre (1,2). En changeant la position angulaire et/ou la position axiale du cylindre (40) par rapport au cylindre (1,2) on obtient la variation correspondante du point d'interception des barrettes (B) et ainsi la régulation de la longueur des éléments en sortie. Lesdits cylindres (1,2) peuvent être opportunement pourvus de canaux longitudinaux (6) prévus presque en correspondance d'une ou plusieurs des gorges respectives (G) pour permettre la circulation des fluides de chauffement ou de refroidissement qui peuvent être alimentés au moyen d'une installation ne pas représentée pour simplification dans les figures des dessins annexés.Advantageously, in accordance with the invention, in a cavity (CA) of each of the cylinders (1,2) are provided means for reducing said bars (B) in elements of predetermined length. According to a first embodiment, with reference to fig. 5 of the accompanying drawings, said means include a truncated cone shaped body (4) with the minor base facing outwards from the machine and housed in the cavity (CA) of the cylinder, fixed coaxially on the same shaft, so that turn solidly with it. The bars (B) outgoing from the channels (100) are intercepted by the surface of the body (4) and thus sectioned in basically length elements corresponding to the distance between the section of exit of each channel and said surface, by effect folding and the consequent loss of cohesion derived from it. Short elements or "dumplings" thus obtained result directed by sliding on the surface of the same body (4) towards the exterior - where means of sampling and conveyor belts not shown in the drawing are planned -. In alternatives, in reference to fig. 6 of the accompanying drawings, said means include a fixed spatula (5) arranged in the cavity (CA) of the shaped and folded cylinder so as to operate either the cutting of the bars (B) outgoing from the channels (100) and carried by the cylinder in rotation, that routing to the external elements that have been cut. According to another alternative embodiment and in reference to the diagrams in figs. 7 and 8, the means of subdivision of the bars (B) include a cylinder (40) internal to the toothed cylinder (1,2) and provided with several channels (41) where the axes form a predetermined angle with the axes of the holes (100) correspondents of the cylinder (1,2). By changing the angular position and / or the axial position of the cylinder (40) relative to cylinder (1,2) on get the corresponding point variation interception of the bars (B) and thus the regulation of the length of the output elements. Said cylinders (1,2) can be conveniently provided with longitudinal channels (6) almost provided in correspondence of one or more of the gorges (G) to allow the circulation of heating or cooling fluids which can be supplied by means of an installation not shown for simplicity in figures of the attached drawings.
La machine décrite est capable de travailler des matériaux solides de nature différente, comme par exemple substances alimentaires et pour la production d'aliments pour animaux, détruits, déchets indutriels et similaires. Dans le cas où la nature des matériaux traités l'admet, le produit fini peut être avantageusement employé comme combustible alternatif pour l'alimentation de brûleurs appropriés, déjà connus en soi.The machine described is capable of working solid materials of different nature, such as example food substances and for the production of animal feed, destroyed, industrial and similar wastes. In case the nature of the materials treated admits it, the product finished can be advantageously used as alternative fuel for the supply of suitable burners, already known per se.
Claims (7)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITFI960284 | 1996-12-04 | ||
| ITFI960284 IT1286890B1 (en) | 1996-12-04 | 1996-12-04 | MACHINE FOR COMPACTING SOLID MATERIALS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0846554A2 true EP0846554A2 (en) | 1998-06-10 |
| EP0846554A3 EP0846554A3 (en) | 1999-01-27 |
Family
ID=11351870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97830637A Withdrawn EP0846554A3 (en) | 1996-12-04 | 1997-12-01 | Machine for compressing solid materials |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0846554A3 (en) |
| IT (1) | IT1286890B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1260352A1 (en) * | 2001-05-14 | 2002-11-27 | Ecotre System S.r.l. | Pelletizing machine and method of producing pellets |
| DE10228206A1 (en) * | 2002-06-24 | 2004-01-22 | BüHLER GMBH | Production of pellets used as fuel for heating purposes comprises mixing and moistening wheat bran with cold water, and pressing bran into pellets having a specified moisture content |
| FR2931721A1 (en) * | 2008-06-03 | 2009-12-04 | Saveh Arash Honarkar | Extrusion rotary press for producing granule, has feeding units located towards external face of hollow cylinders, and granules evacuating unit located towards internal face of cylinders and evacuating material granules from internal face |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1602C (en) * | 1913-06-02 | 1917-01-02 | Schueler George Richard | Improvement on a device for pressing plastic substances into a specific shape between toothed drums |
| DE564638C (en) * | 1932-11-21 | Albert William Sizer | Two-roller molding machine for the production of food cones | |
| DE1101374B (en) * | 1960-03-01 | 1961-03-09 | Emil Hutt | Device for the production of granules |
| FR1371346A (en) * | 1960-06-17 | 1964-09-04 | Nat Frost Prot Co | Machine for the production of granules and similar compressed bodies |
| GB1153862A (en) * | 1965-06-03 | 1969-05-29 | Alvan Blanch Dev Company Ltd | Improvements relating to the Manufacture of Pellets or Cubes of Compressed Grass |
| DE2151865A1 (en) * | 1970-11-11 | 1972-05-18 | Leuna Werke Veb | Plastic granules prodn - from a mixt of thermoplastic and polyolefin materials |
| WO1993022132A1 (en) * | 1992-04-29 | 1993-11-11 | Franz Haimer | Device for pelletizing vegetable materials |
-
1996
- 1996-12-04 IT ITFI960284 patent/IT1286890B1/en active IP Right Grant
-
1997
- 1997-12-01 EP EP97830637A patent/EP0846554A3/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE564638C (en) * | 1932-11-21 | Albert William Sizer | Two-roller molding machine for the production of food cones | |
| NL1602C (en) * | 1913-06-02 | 1917-01-02 | Schueler George Richard | Improvement on a device for pressing plastic substances into a specific shape between toothed drums |
| DE1101374B (en) * | 1960-03-01 | 1961-03-09 | Emil Hutt | Device for the production of granules |
| FR1371346A (en) * | 1960-06-17 | 1964-09-04 | Nat Frost Prot Co | Machine for the production of granules and similar compressed bodies |
| GB1153862A (en) * | 1965-06-03 | 1969-05-29 | Alvan Blanch Dev Company Ltd | Improvements relating to the Manufacture of Pellets or Cubes of Compressed Grass |
| DE2151865A1 (en) * | 1970-11-11 | 1972-05-18 | Leuna Werke Veb | Plastic granules prodn - from a mixt of thermoplastic and polyolefin materials |
| WO1993022132A1 (en) * | 1992-04-29 | 1993-11-11 | Franz Haimer | Device for pelletizing vegetable materials |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1260352A1 (en) * | 2001-05-14 | 2002-11-27 | Ecotre System S.r.l. | Pelletizing machine and method of producing pellets |
| DE10228206A1 (en) * | 2002-06-24 | 2004-01-22 | BüHLER GMBH | Production of pellets used as fuel for heating purposes comprises mixing and moistening wheat bran with cold water, and pressing bran into pellets having a specified moisture content |
| FR2931721A1 (en) * | 2008-06-03 | 2009-12-04 | Saveh Arash Honarkar | Extrusion rotary press for producing granule, has feeding units located towards external face of hollow cylinders, and granules evacuating unit located towards internal face of cylinders and evacuating material granules from internal face |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1286890B1 (en) | 1998-07-17 |
| EP0846554A3 (en) | 1999-01-27 |
| ITFI960284A1 (en) | 1998-06-04 |
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