B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 33/073 (2006.01) B01D 33/46 (2006.01) B29C 47/68 (2006.01)
Patent
CA 2549153
The invention relates to a device which is used to continuously filter material mixtures, in particular for separating impurities from plastic melts. Said device comprises a hollow cylindrically-shaped filter element (2) which is arranged inside a housing (1), an annular chamber (22) which is defined from the outside of the filter element (2) and an inner wall of the housing, and at least one stripper (23) which can be pressed onto the filter body by means of an adjusting device, said stripper being used to remove the impurities detained on the filter element (2) due to a relative movement of the filter element (2) and the stripper (23). The adjusting device contains a pressure sensor (42, 53) which is used to detect the pressure of the material mixture upstream from the filter body and an actuator (43) which is connected to the pressure sensor, said actuator being used to adjust the pressure of the stripper (23) according to the pressure detected by the pressure sensor.
L'invention concerne un dispositif de filtrage continu de mélanges de matériaux, notamment destiné à la séparation d'impuretés dans des fontes plastiques, comportant un élément de filtrage cylindrique creux (2), disposé dans un boîtier (1), un espace annulaire (22) délimité par le côté extérieur de l'élément de filtrage (2) et une paroi intérieure du boîtier, et au moins un racleur (23) pouvant être comprimé contre le corps de filtrage par l'intermédiaire d'un dispositif de fixation, destiné à éliminer les impuretés retenues sur l'élément de filtrage (2) lors du mouvement relatif entre l'élément de filtrage (2) et le racleur (23). Le dispositif de fixation comporte un capteur de pression (42, 53) destiné à détecter la pression du mélange de matériaux en amont du corps de filtrage, et un élément de réglage (43) connecté au capteur de pression, destiné à régler la pression de compression du racleur (23) en fonction de la pression relevée par le capteur de pression.
Ettlinger Kunststoffmaschinen Gmbh
Riches Mckenzie & Herbert Llp
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