METHOD FOR OPERATING A FILTER DEVICE AND FILTER DEVICE

• Main Authors: DAHLHEIMER STEVEN, EIDEN ANNA
• Format: Patent
• Language: Chinese; English
• Published: 16.07.2024
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to a method for operating a filter device (10) for a polymer melt to be filtered, comprising at least one first large-area filter (15a) comprising a plurality of filter elements (14a) in a first filter chamber (12a) and a first outflow (18a) for the filtered polymer melt originating from the first filter chamber (12a). The polymer melt to be filtered is conveyed under pressure through the filter device (10). According to the invention, in a basic mode, a polymer melt to be filtered is fed in a filtering direction (16) to the first large-area filter (15a) and is continuously filtered by the first large-area filter (15a). In a backflushing mode, impurities in at least one filter element (14a) are removed and backflushed by reversing the direction of flow of the filtered polymer melt and guiding it through the filter element (14a). 本发明涉及一种操作用于待过滤的聚合物熔体的过滤装置(10)的方法，所述过滤装置包括位于第一过滤腔(12a)中的至少一个包括多个过滤元件(14a)的第一大面积过滤器(15a)以及源自所述第一过滤腔(12a)的用于所述经过滤的聚合物熔体的第一流出部(18a)。所述待过滤的聚合物熔体在压力下被输送穿过所述过滤装置(10)。根据