Patent ID: 6227380
Filing Date: 2001-05-08
Classification: B01D,B29C

Abstract:
Filter apparatus for liquids containing impurities, in the form of solid particles comprising:a housing in which at least one stationary, substantially flat filter is disposed to which the liquid to be cleaned is supplied in the region of its periphery via at least one supply channel and from which the cleaned fluid is conducted off the housing via at least one downstream channel,at least one scraper element, having a scraping edge that is pressed against the upstream-side surface of the filter and is movably connected to a scraper carrier that is rotatable around an axis disposed substantially perpendicular to the upstream-side surface of the filter by a drive means, the scraper element scraping off the impurities adhering to this surface and conveying them towards the center of the filter, wherefrom the impurities are conveyed off the housing by means of at least one screw via at least one discharge channel that starts from the center of the filter and conducts the impurities out of the housing,wherein at least one scraper element is connected to the scraper carrier swivellably around an axis and extending from this axis in the direction of rotation of the scraper carrier and obliquely to the filter, the scraping edge of the scraper element being pressed against the filter during revolution of the scraper element by the counter-pressure of the liquid to be cleaned.