ES2304245T3 - Instalacion para preparar material termoplastico. - Google Patents
Instalacion para preparar material termoplastico. Download PDFInfo
- Publication number
- ES2304245T3 ES2304245T3 ES03702170T ES03702170T ES2304245T3 ES 2304245 T3 ES2304245 T3 ES 2304245T3 ES 03702170 T ES03702170 T ES 03702170T ES 03702170 T ES03702170 T ES 03702170T ES 2304245 T3 ES2304245 T3 ES 2304245T3
- Authority
- ES
- Spain
- Prior art keywords
- receptacle
- tools
- receptacles
- installation according
- spindle
- 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.)
- Expired - Lifetime
Links
- 238000009434 installation Methods 0.000 title claims abstract description 24
- 239000012815 thermoplastic material Substances 0.000 title claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 57
- 238000004891 communication Methods 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000000428 dust Substances 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 4
- 238000007872 degassing Methods 0.000 claims description 2
- 239000004033 plastic Substances 0.000 description 13
- 229920003023 plastic Polymers 0.000 description 13
- 229920000139 polyethylene terephthalate Polymers 0.000 description 6
- 239000005020 polyethylene terephthalate Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000013021 overheating Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 241001080126 Tromba Species 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 208000007536 Thrombosis Diseases 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 239000011365 complex material Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
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- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
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- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
- B29B7/007—Methods for continuous mixing
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- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/60—Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material
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- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/66—Recycling the material
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29B7/7466—Combinations of similar mixers
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- B29B7/88—Adding charges, i.e. additives
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- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
- B29C48/385—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in separate barrels
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
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- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
- B29C48/387—Plasticisers, homogenisers or feeders comprising two or more stages using a screw extruder and a gear pump
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
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- B29C48/39—Plasticisers, homogenisers or feeders comprising two or more stages a first extruder feeding the melt into an intermediate location of a second extruder
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C2948/92009—Measured parameter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C2948/92009—Measured parameter
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- B29C2948/92009—Measured parameter
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Instalación para preparar material termoplástico a reciclar, con un primer y un segundo receptáculo (1,2) para el material a tratar, estando previstas unas herramientas (21) dentro de dichos receptáculos (1,2) que giran alrededor de ejes verticales para mezclar y calentar dicho material, de forma que en todos los casos haya al menos dos herramientas (21) girando a alturas diferentes y el material procedente del primer receptáculo (1) llegue a través de un canal de comunicación (3) al segundo receptáculo (2), conectado éste a un equipo de evacuación (9); el primer receptáculo (1) tiene en su parte superior una abertura para la introducción (19) del material a tratar, que está a una altura superior a la de la herramienta giratoria (21) situada más arriba en el receptáculo (1), y la abertura de salida (49) del segundo receptáculo se encuentra más o menos a la altura de la herramienta más baja de las que giran en dicho receptáculo (2), encontrándose la salida del canal de comunicación (3) al segundo receptáculo (2) a una altura superior a las herramientas (21) que giran en dentro de este receptáculo (2), siendo transportado el material tratado desde el segundo receptáculo (2) a través de la abertura de salida (49) mediante un husillo (47), por lo cual este receptáculo (2) se encuentra cerrado al vacío, estando conectado el primer receptáculo (1) igualmente a un equipo de evacuación (9), caracterizada porque en la abertura de entrada (19) del primer receptáculo (1) hay colocada una esclusa (6) y en ambos receptáculos (1, 2) las herramientas (21) se encuentran sujetadas a portaútiles (22) en forma de discos superpuestos, estando previstos en cada uno de los receptáculos (1, 2), para cada plano o nivel de las herramientas giratorias (21) al menos un sensor de temperatura (32), que se encuentra situado a una altura superior al nivel o plano al que está asignado.
Description
Instalación para preparar material
termoplástico.
La invención se refiere a una instalación para
preparar material termoplástico a reciclar, con un primer y un
segundo receptáculo para el material a tratar, estando previstas
unas herramientas dentro de dichos receptáculos que giran alrededor
de ejes verticales para mezclar y calentar dicho material, de forma
que en todos los casos haya al menos dos herramientas girando a
alturas diferentes y el material procedente del primer receptáculo
llegue a través de un canal de comunicación al segundo receptáculo,
conectado éste a un equipo de evacuación; el primer receptáculo
tiene en su parte superior una abertura para la introducción del
material a tratar, que está a una altura superior a la de la
herramienta giratoria situada más arriba en el receptáculo, y la
abertura de salida del segundo receptáculo se encuentra más o menos
a la altura de la herramienta más baja de las que giran en dicho
receptáculo, encontrándose la salida del canal de comunicación al
segundo receptáculo a una altura superior a las herramientas que
giran en tomo a este receptáculo, siendo transportado el material
tratado desde el segundo receptáculo a través de la abertura de
salida mediante un husillo, por lo cual este receptáculo se
encuentra cerrado al vacío, estando conectado el primer receptáculo
igualmente a un equipo de evacuación.
Una instalación de este tipo es conocida a
partir de la patente WO 01/21372.
También se conoce otra instalación, igualmente
con dos receptáculos por los que discurre, en serie, el material a
tratar, por EP 632759 B1.
Por regla general, tales instalaciones funcionan
de forma satisfactoria cuando el material a tratar no plantea
exigencias especiales, en especial con respecto a la sensibilidad al
contacto con el aire o al sobrecalentamiento, o cuando se pretende
evitar un acortamiento de la cadena molecular.
La presente invención se ha propuesto mejorar la
instalación presentada al principio de forma tal que también el
material más complejo, en especial el PET (polietilentereftalato)
pueda ser procesado de forma suave y continuada sin correr el
riesgo de que este materia resulte dañado por un calentamiento
excesivo. En especial se pretende evitar una disminución del valor
IV (intrinsic viscosity) del PET, incluso aumentándolo si fuera
posible, lo cual equivale a aumentar la solidez de los productos
elaborados con plástico reciclado.
La invención soluciona este problema al conectar
una esclusa en la abertura de entrada del primer receptáculo,
estando sujetas las herramientas en ambos receptáculos sobre
soportes en forma de disco superpuestos, estando prevista en cada
uno de los receptáculos para cada nivel de las herramientas al
menos un sensor de temperatura, que está colocado a una altura
superior al del plano o nivel al que está asignado. De esta forma,
el material plástico a reciclar introducido en la instalación se
encuentra encerrado al vacío desde que entra en el primer
receptáculo hasta su salida del segundo receptáculo a través del
husillo, de modo que se evitan influencias atmosféricas nocivas y
el material es tratado como en un autoclave. Debido a que las
herramientas giran en tomo a cada uno de los receptáculos a alturas
diferentes, resulta un tiempo de permanencia del material a tratar
dentro de cada receptáculo suficiente, lo que contribuye
notablemente a la homogeneidad del material resultante durante el
proceso. En el primer receptáculo, el material es introducido a
través de la esclusa desde arriba sobre las herramientas giratorias
superiores, siendo movido por éstas en un movimiento giratorio
alrededor del eje del receptáculo en forma de una tromba mezcladora.
Lentamente, el material tratado por las herramientas dispuestas en
el plano superior del primer receptáculo va cayendo al área de las
herramientas dispuestas en el nivel inferior, siendo movidas
igualmente en un movimiento de tromba mezcladora. Este proceso se
repite cuantos más niveles de herramientas haya en los respectivos
receptáculos. Dado que a cada uno de los planos o niveles hay
asignado un sensor de temperatura, situado más arriba del plano de
la herramienta, puede evitarse un sobrecalentamiento del material
tratado mediante la correspondiente vigilancia de los valores
mostrados por los sensores de temperatura, y con ello un daño
térmico, en cualquiera de los puntos.
Desde el primer receptáculo el material tratado
llega al segundo receptáculo a través del canal de comunicación,
depositándose igualmente desde arriba a las herramientas que giran
dentro de este receptáculo. El tratamiento en el segundo receptáculo
mediante las herramientas que van girando se realiza de forma
análoga a cómo sucede en el primer receptáculo, es decir, el
material es procesado primeramente por las herramientas en el nivel
superior y va cayendo lentamente al área de las herramientas del
nivel inferior. El material así obtenido es totalmente homogéneo,
siendo presionado finalmente por las herramientas dispuestas en el
segundo receptáculo hacia la abertura de salida del mismo, siendo
extraído de éste mediante un husillo unido a esta abertura. Este
husillo actúa de forma estanca, por ejemplo mediante la compresión
del material recibido, de modo que el vacío generado en el segundo
receptáculo no se pierde al sacar el material procesado. En la
entrada del husillo se halla un material totalmente homogeneizado y
cristalizado en la medida deseada, que sin embargo no ha sufrido
ningún género de daño térmico. Sorprendentemente se ha podido
observar que se puede obtener incluso un aumento del valor IV, de
modo que a partir del material reciclado así obtenido se pueden
elaborar productos con una elevada solidez.
Mediante los discos portaútiles se garantiza que
el material procesado sólo pueda caer desde arriba hacia abajo a
través del paso anular entre el borde de éste portaútiles y la pared
interior del correspondiente receptáculo. Esto favorece el
mantenimiento del tiempo de permanencia deseado para cada una de
las partículas plásticas dentro del correspondiente
receptáculo.
En otra versión de la invención el equipo de
evacuación se ha preparado para generar condiciones de estanqueidad
diferentes en los receptáculos, estando dispuesta en el canal de
comunicación una esclusa de transferencia. Así se obtiene la
posibilidad de trabajar en los receptáculos con vacíos diferentes,
sin que la diferencia de presión perturbe el paso del material
procesado desde el primer receptáculo al segundo. A pesar de esta
esclusa de vacío sigue siendo posible trabajar de forma continuada,
dado que la esclusa puede ser accionada de forma tal que se puede
mantener una salida continuada del material procesado desde el
primer receptáculo junto a una alimentación continuada suficiente
en el segundo.
Para el mantenimiento del vacío en ambos
receptáculos puede ser suficiente una única bomba de vacío. En caso
de desearse condiciones de vacío diferenciadas para los dos
receptáculos, resulta más ventajoso que el equipo de evacuación
lleve al menos una bomba de vacío. Además, en esta invención se ha
considerado útil un orden o disposición de forma que en cada uno de
los receptáculos haya un dispositivo para vigilar el vacío que hay
dentro del receptáculo, que controla el vacío dentro de éste y
además es ajustable, de forma que en cada uno de los receptáculos
se puede obtener y mantener el nivel de vacío deseado.
En una versión preferente la invención presenta
al menos uno de los bordes de los discos portaútiles combado a modo
de plato.
Otras características y ventajas de la invención
resultan de la descripción de una versión a modo de ejemplo, que se
representa de forma esquemática en el dibujo.
La instalación presentada en el dibujo tiene dos
receptáculos 1, 2, unidos entre sí mediante un canal de comunicación
3. La entrada del material termoplástico a tratar, que con
frecuencia consiste en PET (polietilentereftalato) pretriturado
proveniente de botellas y envases similares, láminas, fibras, etc.,
se realiza a través de una cinta transportadora 4 a una tolva 5, a
cuya salida va unida una esclusa 6, que puede tener se una esclusa
de vacío, para lo cual su interior 7 puede ir unida a un equipo de
evacuación 9 a través de una conducción 8. La esclusa 6 tiene en
los extremos superior e inferior dos compuertas 10, 11, que pueden
ser empujadas por cilindros de doble acción 12, siendo práctico que
estos cilindros 12 estén accionados de forma hidráulica o
neumática. A través de esta esclusa 6 se puede también mantener un
vacío suficiente en el receptáculo 1 incluso mediante una
alimentación continuada del material a reciclar, para lo cual el
interior del receptáculo 1 se encuentra conectado a una bomba de
vacío 14 del equipo de evacuación 9 a través de una conducción 13.
Este vacío se mide constantemente mediante un medidor de vacío 15,
transfiriéndose los valores medidos a un dispositivo de vigilancia
16 a través de una conducción 17, estando conectado el dispositivo
de vigilancia 16 al equipo de evacuación 9 a través de una
conducción 18, de forma que el equipo de evacuación 9 se encarga de
mantener constantemente el vacío deseado dentro del
receptáculo.
El extremo de salida de la esclusa 6 está
conectado a una abertura de entrada 19 en la parte superior o en la
tapa 20 del receptáculo 1, de modo que el material plástico a
reciclar introducido cae desde arriba sobre las herramientas 21,
que están montadas sobre un portaútiles 22, que es accionado
mediante un eje 24 por un motor 25 para que gire alrededor del eje
24, que atraviesa de forma estanca el fondo del receptáculo 23, en
la dirección que indica la flecha 26. Herramientas parecidas 21 se
encuentran sobre portaútiles adicionales 22, que se encuentran
sujetados a lo largo del eje 24 y por debajo del portaútiles
superior 22. El portaútiles 22 situado en el plano más bajo se
encuentra a poca distancia por encima del fondo 23 del receptáculo 1
de forma tal, que las herramientas 21 que lleva se encuentran a la
altura de una abertura de salida 27, a través de la cual se
encuentra conectada la caja 28 de un husillo 29 de forma tangencial
al receptáculo 1. Esta abertura de salida 27 constituye al mismo
tiempo la abertura de entrada de la caja del husillo 28. De esta
forma, las herramientas giratorias 21 del portaútiles inferior
presionan el material procesado hacia los pasos del husillo 29, por
un lado por la acción centrífuga y por otro lado al modo de una
espátula, siempre que las herramientas 21 estén dispuestas a tal
efecto sobre el portaútiles 22.
Las herramientas 21 de cada portaútiles 22
impulsan el giro del material plástico procesado en torno al eje del
receptáculo 1, ascendiendo el material en forma de una tromba
mezcladora 30. A cierta distancia por arriba del portaútiles 22 hay
dispuesto en la pared interior 31 del receptáculo 1 un sensor de
temperatura 32. Cada uno de los sensores de temperatura 32 está
unido a un dispositivo de ajuste 34 a través de una conducción 33.
Este dispositivo de ajuste 34 controla a través de una conducción
40 las revoluciones del motor 25 que impulsa el movimiento
giratorio de las herramientas 21 de forma tal que se evita el
sobrecalentamiento del material procesado en el receptáculo 1.
El husillo 29 accionado por el motor 35
transporta el material procesado en el receptáculo 1 hasta un canal
de comunicación 3, que desemboca en el receptáculo 2 mediante una
abertura de entrada 37 dispuesta en la tapa 36 o en el área superior
de dicho receptáculo. En este receptáculo 2 se encuentran sujetos,
de forma similar a cómo se describió para el receptáculo 1,
herramientas 21 sobre portaútiles 22, dispuestas bajo la abertura de
entrada 37, que giran alrededor de un eje 38 accionado por un motor
39. Las revoluciones de este motor 39 son controladas igualmente
por un dispositivo de ajuste 41 a través de una conducción 42, de
forma tal que la temperatura del material plástico procesado en el
receptáculo 2 detectada mediante sensores de temperatura 32 no
rebase los valores definidos previamente.
Las herramientas 21 también pueden ser
accionadas desde arriba. En este caso, el motor 25/39 se encuentra
por encima del receptáculo 1/2 y el eje 24/38 atraviesa la tapa
20/36 de forma estanca.
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También el receptáculo 2 es evacuable, teniendo
conectado para ello una bomba de vacío 44 de un equipo de
evacuación 9 a través de una conducción. Ambos receptáculos, el 1 y
el 2, se pueden evacuar mediante la misma bomba de vacío. No
obstante, para que la instalación sea más polifacética, es
preferible el uso de bombas de vacío independientes 14, 44, dado que
de esta forma se pueden conseguir y mantener condiciones de
infrapresión diferenciada en los receptáculos 1, 2 de forma
sencilla. La presión en el receptáculo 2 se mide mediante un medidor
de vacío 45, comunicándose al equipo de evacuación 9 mediante un
dispositivo de control 45, de modo que se puede conservar en tod6
momento las condiciones de vacío deseadas en el receptáculo 2, de
forma análoga a cómo sucede en el receptáculo 1.
Del receptáculo 2 se extrae el material plástico
procesado mediante un husillo 47, cuya caja está conectada al
receptáculo 2 a través de una abertura de salida 49 de forma análoga
a cómo se describió para el receptáculo 1. Esta abertura de salida
49 está situada a la altura de las herramientas 21 del receptáculo
2 que se encuentran en el portaútiles inferior, de modo que el
llenado del husillo 47 se realiza de forma similar a cómo se realiza
el llenado del husillo 29. El diámetro interior del husillo 47
aumenta en el sentido del transporte (flecha 50), de modo que el
material transportado a través de la abertura de evacuación 49 del
husillo es comprimido, de entrada. A continuación de esta zona de
compresión vuelve a reducirse el diámetro interior del husillo 47,
de modo que se produce una zona de descompresión 51 para el material
transportado por el husillo 47. En esta zona de descompresión 52 la
caja del husillo 48 puede ser sustituida al menos por una abertura
de desgasificación. A las aberturas 52 se encuentran conectadas
conducciones 53 para la extracción de los gases. La extracción de
gases puede ser apoyada por una bomba de vacío 54 del equipo de
evacuación 9. El vacío generado mediante la bomba 54 puede ser
controlado mediante un medidor de vacío 55.
Eventualmente se pueden repartir las bombas de
vacío 14, 44, 54 en diferentes direcciones de los dispositivos de
evacuación 9, si bien por regla general se reúnen los componentes
generadores de vacío en un solo equipo de evacuación 9.
Cuando se pretenda mantener en los receptáculos
1 y 2 condiciones de vacío diferentes y el husillo 29 y su caja 28
no forman un cierre estanco entre ambos receptáculos 1, 2, entonces
resulta práctico disponer un canal de comunicación 3 una esclusa de
transferencia 56, cuya cámara de esclusas 57 está limitada por dos
compuertas 58, 59, las cuales son empujadas por unos cilindros 60,
de forma análoga a cómo se sucede en la esclusa 6. Igualmente,
también la cámara de esclusas 57 de la esclusa de transferencia se
encuentra conectada al equipo de evacuación 9 mediante una
conducción 61.
El husillo 47 es accionado por un motor 64 y
convenientemente forma parte de un extrusor 62, que transporta el
material aportado por el husillo 47 en forma de haz hasta un
dispositivo para granular. Este extrusor 62 puede ser un extrusor de
doble husillo. Aunque también es posible que el husillo 47 actúe
meramente como husillo transportador y acarree el material
transportado por 61 hasta una siguiente fase de procesado, como por
ejemplo (tras la plastificación) una instalación de conformado.
Resulta conveniente meter en las conducciones
17, 43, a través de las que se lleva a cabo la evacuación de los
receptáculos 1, 2, unos captadores de polvo 66, que eliminan todo el
polvo del aire aspirado, polvo que se produce por la fricción al
procesar la masa de material plástico en el receptáculo 1, o en el
2.
Debido a la forma de los portaútiles 22
diseñados como discos con sección circular se forma entre el borde
de cada disco y la pared lateral 31 del receptáculo 1, o 2 en su
caso, un paso anular 63. Sólo a través de este paso anular 63 puede
superar el material desde arriba a abajo el correspondiente disco
portaútiles 22, lo que contribuye a que quede garantizada para cada
una de las partículas plásticas una permanencia suficiente en el
receptáculo 1 o 2. A ello contribuye también la disposición
múltiple de los portaútiles 22, dado que cada portaútiles con sus
herramientas 21 provoca una arremolinamiento del material plástico
recibido desde arriba en forma de una tromba mezcladora 30. La
cantidad de los portaútiles 22 superpuestos en los respectivos
receptáculos 1 o 2 se rige por el ámbito de aplicación previsto, si
bien deberían disponerse en cada uno de los receptáculos 1 o 2 al
menos dos portaútiles 22 superpuestos.
Resulta conveniente doblar o angular el borde
del disco 65 hacia arriba a modo de plato, dado que ello favorece
la forma de una tromba mezcladora hacia arriba y contrarresta un
descenso prematuro de las partículas plásticas por la ranura entre
el borde del disco y la pared del receptáculo.
Cuando la instalación esté diseñada para
procesar material plástico previamente triturado, como por ejemplo
granulado de botellas de PET, entonces no es necesario que las
herramientas 21 tengan una acción trituradora, en tal caso pueden
ser herramientas meramente mezcladoras, que actúan sobre el
material calentándolo, pasando la energía cinética aportada por las
herramientas en gran medida a ser energía térmica, que se transmite
al material. No obstante, en caso de ser necesario triturar el
material plástico a procesar, resulta conveniente diseñar las
herramientas 21 con filos cortantes, es decir, a modo de cuchillas,
estando dispuestos estos filos cortantes de forma que al girar las
herramientas (flecha 26) resulta un corte oblicuo.
Los sensores de temperatura 32 en ambos
receptáculos 1, 2 se encuentran, como ya se mencionaba, a altura
superior a los portaútiles o herramientas 21, en cuya área de tromba
se sitúa el sensor correspondiente. En muchos casos la altura más
conveniente para colocar los sensores está en el área en el que la
tromba mezcladora 30 abandona la pared 31 del receptáculo 1, o
2.
Las cajas de los husillos 28 o 48 no tienen que
estar necesariamente dispuestas de forma tangencial al receptáculo
1 o 2, también es posible una colocación radial o al modo de una
secante en relación al receptáculo. Pero la disposición tangencial
tiene la ventaja de que el motor 35 o 64 que acciona el husillo
puede ser colocado en uno de los extremos del husillo, quedando el
extremo evacuador del husillo al otro extremo de la caja
correspondiente. Ello evita tener que desviar lateralmente el
material transportado por el husillo.
Claims (12)
1. Instalación para preparar material
termoplástico a reciclar, con un primer y un segundo receptáculo
(1,2) para el material a tratar, estando previstas unas herramientas
(21) dentro de dichos receptáculos (1,2) que giran alrededor de
ejes verticales para mezclar y calentar dicho material, de forma
que en todos los casos haya al menos dos herramientas (21) girando
a alturas diferentes y el material procedente del primer receptáculo
(1) llegue a través de un canal de comunicación (3) al segundo
receptáculo (2), conectado éste a un equipo de evacuación (9); el
primer receptáculo (1) tiene en su parte superior una abertura para
la introducción (19) del material a tratar, que está a una altura
superior a la de la herramienta giratoria (21) situada más arriba
en el receptáculo (1), y la abertura de salida (49) del segundo
receptáculo se encuentra más o menos a la altura de la herramienta
más baja de las que giran en dicho receptáculo (2), encontrándose
la salida del canal de comunicación (3) al segundo receptáculo (2)
a una altura superior a las herramientas (21) que giran en dentro
de este receptáculo (2), siendo transportado el material tratado
desde el segundo receptáculo (2) a través de la abertura de salida
(49) mediante un husillo (47), por lo cual este receptáculo (2) se
encuentra cerrado al vacío, estando conectado el primer receptáculo
(1) igualmente a un equipo de evacuación (9), caracterizada
porque en la abertura de entrada (19) del primer receptáculo (1)
hay colocada una esclusa (6) y en ambos receptáculos (1, 2) las
herramientas (21) se encuentran sujetadas a portaútiles (22) en
forma de discos superpuestos, estando previstos en cada uno de los
receptáculos (1, 2), para cada plano o nivel de las herramientas
giratorias (21) al menos un sensor de temperatura (32), que se
encuentra situado a una altura superior al nivel o plano al que está
asignado.
2. Instalación con arreglo a la reivindicación
1ª, caracterizada porque el equipo de evacuación (9) está
preparado para generar condiciones de vacío diferentes en los dos
receptáculos (1, 2) y que en el canal de comunicación (3) hay
dispuesta una esclusa de transferencia (56).
3. Instalación con arreglo a la reivindicación
2ª, caracterizada porque el equipo de evacuación (9)
presenta para cada uno de los receptáculos (1, 2) al menos una bomba
de vacío (14, 44).
4. Instalación con arreglo a las
reivindicaciones 1ª a 3ª, caracterizada porque a cada uno de
los receptáculos (1, 2) hay conectado al menos un dispositivo de
control (16, 46) para controlar el vacío existente dentro del
receptáculo (1, 2), de forma regulable.
5. Instalación con arreglo a las
reivindicaciones 1ª a 4ª, caracterizada porque al menos en
uno de los portaútiles (22) el borde del disco (65) está doblado
hacia arriba en forma de plato.
6. Instalación con arreglo a las
reivindicaciones 1ª a 5ª, caracterizada porque los sensores
de temperatura (32) están conectados a los dispositivos (34, 41)
para regular la velocidad de giro de las herramientas (21).
7. Instalación con arreglo a las
reivindicaciones 1ª a 6ª, caracterizada porque cada uno de
los equipos de evacuación (9) están provistos de un captador de
polvo. (66).
8. Instalación con arreglo a las
reivindicaciones 1ª a 7ª, caracterizada porque el husillo
(47) es un elemento de un extrusor 62).
9. Instalación con arreglo a la reivindicación
8ª, caracterizada porque en la abertura de salida (49) hay
conectado un extrusor de doble husillo.
10. Instalación con arreglo a las
reivindicaciones 1ª a 9ª, caracterizada porque la caja (48)
del husillo (47) unido a la abertura de salida (49) tiene al menos
una abertura de desgasificación (52), a la que se encuentra
conectada preferentemente una bomba de vacío (54).
11. Instalación con arreglo a las
reivindicaciones 1ª a 10ª, caracterizada porque cada sensor
de temperatura (32) se encuentra colocado aproximadamente a la
altura dentro del receptáculo (1, 2) en la que la tromba mezcladora
(30) abandona la pared lateral (31) del receptáculo (1, 2).
12. Instalación con arreglo a las
reivindicaciones 1ª a 11ª, caracterizada porque la esclusa
(6) o (56) es una esclusa de vacío.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA855/2002 | 2002-06-05 | ||
| AT0085502A AT411235B (de) | 2002-06-05 | 2002-06-05 | Vorrichtung zur aufbereitung von thermoplastischem kunststoffmaterial |
| PCT/AT2003/000002 WO2003103915A1 (de) | 2002-06-05 | 2003-01-07 | Vorrichtung zur aufbereitung von thermoplastischem kunststoffmaterial |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2304245T3 true ES2304245T3 (es) | 2008-10-01 |
Family
ID=3682270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES03702170T Expired - Lifetime ES2304245T3 (es) | 2002-06-05 | 2003-01-07 | Instalacion para preparar material termoplastico. |
Country Status (17)
| Country | Link |
|---|---|
| US (1) | US7137802B2 (es) |
| EP (1) | EP1511607B1 (es) |
| JP (1) | JP4313302B2 (es) |
| KR (1) | KR100657078B1 (es) |
| CN (1) | CN100421896C (es) |
| AT (2) | AT411235B (es) |
| AU (1) | AU2003205398B2 (es) |
| BR (1) | BR0311536B1 (es) |
| CA (1) | CA2486642C (es) |
| DE (1) | DE50309418D1 (es) |
| DK (1) | DK1511607T3 (es) |
| ES (1) | ES2304245T3 (es) |
| PT (1) | PT1511607E (es) |
| SI (1) | SI1511607T1 (es) |
| TW (1) | TWI221805B (es) |
| WO (1) | WO2003103915A1 (es) |
| ZA (1) | ZA200409127B (es) |
Families Citing this family (40)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT411038B (de) * | 2002-06-10 | 2003-09-25 | Bacher Helmut | Vorrichtung zur behandlung von kunststoffgut |
| AT413199B (de) | 2004-03-17 | 2005-12-15 | Erema | Vorrichtung zum aufbereiten von kunststoffmaterial |
| AT413673B (de) | 2004-07-16 | 2006-04-15 | Erema | Vorrichtung und verfahren zur aufbereitung von thermoplastischem, zu recycelndem kunststoffmaterial |
| AT501154B8 (de) * | 2005-01-28 | 2007-02-15 | Erema | Vorrichtung zur befüllung eines extruders mit vorbehandeltem thermoplastischen kunststoffmaterial |
| AT505462B1 (de) * | 2006-11-13 | 2010-10-15 | Erema | Verfahren zur vorbehandlung, aufarbeitung bzw. recyclierung von thermoplastischem kunststoffmaterial |
| AT504709B1 (de) * | 2006-11-23 | 2008-09-15 | Erema | Verfahren und vorrichtung zur einbringung von zusatzstoffen |
| AT505595B1 (de) * | 2007-08-14 | 2009-04-15 | Erema | Verfahren und vorrichtung zur behandlung von kunststoffmaterial |
| DE102009014363A1 (de) * | 2009-03-29 | 2010-09-30 | Dieffenbacher Gmbh + Co. Kg | Verfahren zur taktweise Herstellung und kontinuierlichen Bereitstellung eines Harz-Füllstoffgemisches im Zuge der Produktion von Kunststoff-Formteilen |
| AT508100A2 (de) | 2009-03-30 | 2010-10-15 | Erema | Neutralisierung durch füllstoff |
| IT1398180B1 (it) * | 2010-01-12 | 2013-02-14 | Gamma Meccanica S P A | Dispositivo per il trattamento di materiale plastico. |
| ES2448956T3 (es) | 2010-01-22 | 2014-03-17 | Erema Engineering Recycling Maschinen Und Anlagen Gesellschaft M.B.H. | Procedimiento para el acondicionamiento y detoxificación de un material |
| EP2353839B1 (de) * | 2010-01-27 | 2014-12-10 | Coperion GmbH | Verfahren und aufbereitungsanlage zur entgasung von polymerschmelzen |
| AT511362B1 (de) | 2010-04-14 | 2014-01-15 | Erema | Vorrichtung zum aufbereiten von kunststoffmaterial |
| AT509323B1 (de) * | 2010-04-16 | 2011-08-15 | Erema | Verfahren und vorrichtung zur aufbereitung und reinigung eines polymermaterials |
| AT512223B1 (de) | 2011-10-14 | 2015-02-15 | Erema | Vorrichtung zum aufbereiten von kunststoffmaterial |
| AT512209B1 (de) | 2011-10-14 | 2015-02-15 | Erema | Vorrichtung zum aufbereiten von kunststoffmaterial |
| AT512146B1 (de) | 2011-10-14 | 2015-02-15 | Erema | Vorrichtung zum aufbereiten von kunststoffmaterial |
| AT512212B1 (de) | 2011-10-14 | 2015-02-15 | Erema | Vorrichtung zum aufbereiten von kunststoffmaterial |
| AT512205B1 (de) * | 2011-10-14 | 2015-02-15 | Erema | Vorrichtung zum aufbereiten von kunststoffmaterial |
| AT512207B1 (de) | 2011-10-14 | 2015-02-15 | Erema | Vorrichtung zum aufbereiten von kunststoffmaterial |
| AT512149B1 (de) | 2011-10-14 | 2015-02-15 | Erema | Vorrichtung zum aufbereiten von kunststoffmaterial |
| AT512145B1 (de) * | 2011-10-14 | 2015-02-15 | Erema | Vorrichtung zum aufbereiten von kunststoffmaterial |
| AT512208B1 (de) | 2011-10-14 | 2015-02-15 | Erema | Vorrichtung zum aufbereiten von kunststoffmaterial |
| AT512222B1 (de) | 2011-10-14 | 2015-02-15 | Erema | Vorrichtung zum aufbereiten von kunststoffmaterial |
| WO2015040562A1 (en) | 2013-09-19 | 2015-03-26 | Christian Schiavolin | Treatment method and treatment apparatus for flowable material |
| CN104626395A (zh) * | 2014-12-10 | 2015-05-20 | 刘从祥 | 一种用于塑料制品粉碎的粉碎设备 |
| EP3397443B1 (en) | 2015-12-31 | 2025-04-30 | Triumvirate Environmental, Inc. | Plastic articles made from recycled medical and other plastic waste |
| DE102016224607A1 (de) * | 2016-12-09 | 2018-06-14 | Raumedic Ag | Silikonextrusionsanlage, Verfahren zur Silikonextrusion sowie hierdurch hergestelltes Silikonextrudat |
| CN109745938A (zh) * | 2017-11-06 | 2019-05-14 | 丹阳市景顺塑料制品有限公司 | 一种反应釜 |
| CN110103445A (zh) * | 2018-01-11 | 2019-08-09 | 苏州艾嘉亚真空科技有限公司 | 一种螺杆挤出机真空脱气设备 |
| CN109877987A (zh) * | 2019-03-08 | 2019-06-14 | 南安市德力拉建材贸易有限公司 | 一种塑性塑料的造粒机 |
| DE102019203689B4 (de) | 2019-03-19 | 2026-04-23 | Robert Bosch Gmbh | Anordnung und Verfahren zum Aufwerten von Kunststoffen |
| IT202000005677A1 (it) * | 2020-03-17 | 2021-09-17 | C M G S P A | Impianto di Granulazione e Metodo di Controllo |
| PL3995278T3 (pl) | 2020-11-04 | 2023-12-27 | Sml Maschinengesellschaft M.B.H. | Sposób i urządzenie do przetwarzania polikondensatów |
| CN113650187B (zh) * | 2021-08-09 | 2023-08-01 | 赣州能之光新材料有限公司 | 一种塑料voc脱除装置 |
| CN115008672B (zh) * | 2022-06-17 | 2023-01-06 | 浙江创富新材料有限公司 | 一种电子交联辐射聚乙烯导电泡棉制备装置及工艺 |
| AT526989B1 (de) * | 2022-12-07 | 2026-04-15 | Erema Eng Recycling Maschinen & Anlagen Gmbh | Verfahren und Vorrichtung zur Bearbeitung bzw. Aufbereitung von Polymermaterialien |
| CN116945652B (zh) * | 2023-08-10 | 2024-03-29 | 金亿源(江苏)新材料有限公司 | 一种nbr同质透心地板卷材生产设备 |
| CN117734233A (zh) * | 2023-12-04 | 2024-03-22 | 湖南安福环保科技股份有限公司 | 一种方底阀口袋的高效覆膜机构 |
| CN121018877B (zh) * | 2025-10-31 | 2026-02-24 | 宁波海雄塑料机械有限公司 | 一种注塑机的料筒尾部真空抽气结构及抽气方法 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1190395A (en) * | 1966-09-02 | 1970-05-06 | Fellner & Ziegler Gmbh | Method of and Means for Converting Thermoplastic Synthetic Plastics Waste Material into Non-Caking Granules |
| WO1989007042A1 (fr) * | 1988-02-05 | 1989-08-10 | Erema Engineering-Recycling-Maschinen-Anlagen Gese | Dispositif pour la mise en oeuvre de thermoplastiques |
| US5110055A (en) * | 1989-04-03 | 1992-05-05 | Partek Corporation | Method and apparatus for cleaning thermoplastic material for reuse |
| AT396900B (de) * | 1992-03-19 | 1993-12-27 | Erema | Vorrichtung zum vorbehandeln von thermoplastischem kunststoff |
| AT398772B (de) * | 1992-04-30 | 1995-01-25 | Erema | Verfahren und vorrichtung zum recycling von begastem kunststoffmaterial |
| DK172865B1 (da) * | 1992-06-11 | 1999-08-23 | Perstorp Ab | Apparat til fremstilling af et granulat ud fra brugt termoplastisk materiale |
| JPH1170588A (ja) * | 1997-08-29 | 1999-03-16 | Ykk Corp | 再生合成樹脂スライドファスナー用部品の製造方法 |
| US6149012A (en) * | 1997-11-17 | 2000-11-21 | Advanced Environmental Recycling Technologies, Inc. | System and method for cleaning and recovering plastic from coated fiber polywaste |
| AT407235B (de) * | 1999-04-23 | 2001-01-25 | Bacher Helmut | Vorrichtung zum kontinuierlichen recyclen von kunststoffmaterial, vorzugsweise polyester |
| AT407970B (de) * | 1999-06-02 | 2001-07-25 | Bacher Helmut | Vorrichtung und verfahren zum aufbereiten von, insbesondere thermoplastischem, kunststoffmaterial |
| IT1310096B1 (it) * | 1999-07-12 | 2002-02-11 | Maris Flli Spa | Dispositivo per l'estrazione di sostanze indesiderate da un estrusore. |
| JP2001026019A (ja) * | 1999-07-14 | 2001-01-30 | Sintokogio Ltd | 廃プラスチックの塗料除去装置における温度制御方法および廃プラスチックの塗料除去装置。 |
| AT411161B (de) * | 1999-09-22 | 2003-10-27 | Bacher Helmut | Verfahren und vorrichtung zum recyclen von pet-gut |
| AT407972B (de) * | 1999-12-02 | 2001-07-25 | Bacher Helmut | Vorrichtung zum vorbehandeln und anschliessenden plastifizieren oder agglomerieren von kunststoffen |
-
2002
- 2002-06-05 AT AT0085502A patent/AT411235B/de not_active IP Right Cessation
-
2003
- 2003-01-07 WO PCT/AT2003/000002 patent/WO2003103915A1/de not_active Ceased
- 2003-01-07 CN CNB038130920A patent/CN100421896C/zh not_active Expired - Lifetime
- 2003-01-07 DE DE50309418T patent/DE50309418D1/de not_active Expired - Lifetime
- 2003-01-07 PT PT03702170T patent/PT1511607E/pt unknown
- 2003-01-07 CA CA 2486642 patent/CA2486642C/en not_active Expired - Lifetime
- 2003-01-07 EP EP03702170A patent/EP1511607B1/de not_active Expired - Lifetime
- 2003-01-07 BR BR0311536A patent/BR0311536B1/pt active IP Right Grant
- 2003-01-07 AT AT03702170T patent/ATE389520T1/de active
- 2003-01-07 JP JP2004511020A patent/JP4313302B2/ja not_active Expired - Lifetime
- 2003-01-07 US US10/517,014 patent/US7137802B2/en not_active Expired - Lifetime
- 2003-01-07 ES ES03702170T patent/ES2304245T3/es not_active Expired - Lifetime
- 2003-01-07 AU AU2003205398A patent/AU2003205398B2/en not_active Expired
- 2003-01-07 SI SI200331226T patent/SI1511607T1/sl unknown
- 2003-01-07 KR KR20047019786A patent/KR100657078B1/ko not_active Expired - Lifetime
- 2003-01-07 DK DK03702170T patent/DK1511607T3/da active
- 2003-01-16 TW TW92100866A patent/TWI221805B/zh not_active IP Right Cessation
-
2004
- 2004-11-11 ZA ZA2004/09127A patent/ZA200409127B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU2003205398A1 (en) | 2003-12-22 |
| EP1511607A1 (de) | 2005-03-09 |
| DK1511607T3 (da) | 2008-07-21 |
| BR0311536B1 (pt) | 2012-05-15 |
| PT1511607E (pt) | 2008-06-27 |
| JP4313302B2 (ja) | 2009-08-12 |
| JP2005532192A (ja) | 2005-10-27 |
| CN1659006A (zh) | 2005-08-24 |
| AU2003205398B2 (en) | 2006-01-12 |
| BR0311536A (pt) | 2005-02-22 |
| TW200307596A (en) | 2003-12-16 |
| CN100421896C (zh) | 2008-10-01 |
| US7137802B2 (en) | 2006-11-21 |
| KR20050013203A (ko) | 2005-02-03 |
| EP1511607B1 (de) | 2008-03-19 |
| TWI221805B (en) | 2004-10-11 |
| CA2486642A1 (en) | 2003-12-18 |
| KR100657078B1 (ko) | 2006-12-13 |
| ATE389520T1 (de) | 2008-04-15 |
| WO2003103915A1 (de) | 2003-12-18 |
| SI1511607T1 (sl) | 2008-08-31 |
| US20050287237A1 (en) | 2005-12-29 |
| AT411235B (de) | 2003-11-25 |
| DE50309418D1 (de) | 2008-04-30 |
| CA2486642C (en) | 2008-03-18 |
| ATA8552002A (de) | 2003-04-15 |
| ZA200409127B (en) | 2005-07-27 |
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