B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01D—SEPARATION
B01D33/00—Filters with filtering elements which move during the filtering operation
B01D33/29—Filters with filtering elements which move during the filtering operation the movement of the filter elements being a combination of movements
B01D33/327—Tipping buckets, trays or like sections
Washing and separating device for dredged material in gravel dredgers to extract pure coarse and fine gravel by means of inclined channels branching off on both sides of the bucket dredger