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 2130104
Described is a filter for plastic melts containing impurities, the filter having a housing in which a cylindrical or conical filter element is mounted so that it can be rotated by a drive shaft about its longitudinal axis. Lying against the outside surface of the filter element is a scraper which surrounds the filter element in the form of a spiral. The material to be filtered is fed into the filter element from the outside through an inlet port. The filtrate passes through apertures in the filter element into the central cavity inside the filter element, from where it is removed through an outlet port. The impurities cannot pass through the apertures in the filter element, but collect on the outside surface of the filter element and are conveyed by the fixed scraper to a discharge port. This gives a simple design which is reliable in operation.
La présente invention a pour objet un filtre pour plastiques fondus contenant des impuretés, le filtre ayant un logement dans lequel un élément filtrant cylindrique ou conique est monté de manière à pouvoir être tourné par un arbre d'entraînement autour de son axe longitudinal. Re/osant contre la surface extérieure de l'élément filtrant, un racloir entoure l'élément filtrant sous forme de spirale. L'élément filtrant est alimenté en matériau à filtrer à partir de l'extérieur par un orifice d'admission. Le filtrat passe à travers des ouvertures dans l'élément filtrant dans la cavité centrale de l'élément filtrant, d'où il est évacué par un orifice de sortie. Les impuretés ne peuvent pas passer à travers les ouvertures de l'élément filtrant, mais s'accumulent sur la surface extérieure de l'élément filtrant et sont transportées par le racloir fixe vers un orifice d'évacuation. L'invention est de construction simple et présente un fonctionnement fiable.
Bacher Helmut
Schulz Helmuth
Wendelin Georg
Bacher Helmut
Marks & Clerk
Schulz Helmuth
Wendelin Georg
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