Filtering apparatus for gaseous media

Abstract

Abstract Filtering apparatus having rotatably mounted filter drum with a cylindrical filter surface mounted within a volute casing whose inlet directs dirt-laden medium against the exterior of the filter surface and whose outlet withdraws clean medium from the interior of the drum. The suction nozzle has a suction gap directed toward the filter surface to remove foreign material therefrom. A rotatable roller is pivotally suspended to bear against the cylindrical surface in advance of the suction nozzle to follow the accumulation of foreign material on the filter surface, enlarging the suction gap when the material builds up and reducing it when the material is depleted. The nozzle is fixedly mounted adjacent the inlet of the volute casing and a plate is hinged to the casing and biased against the roller to deflect the incoming dirt-laden medium circumferentially of the drum and a similar plate is hinged to the nozzle and biased against the roller to permit movement of the roller changing the opening of the slot. Blow nozzles are also provided to blow gaseous medium between the nozzle and the cylindrical surface to assist in the loosening of the foreign material from the surface for removal by the suction nozzle.

Inventors

• 👤 Gunnar Wilhelmsson

Bibliographic Details