Abstract: A device has a flange including a base body with a main contact face and a further flange including a further base body with a further main contact face. In a mounted state the flange is connected to the further flange with a sealing element therebetween. The flange has a recess which adjoins the main contact face and in which the sealing element is arranged. The further flange has an extension which protrudes from the further base body at the further main contact face and engages in the recess and contacts the sealing element. The extension positions and centers the sealing element and/or compresses the sealing element. The flange and the further flange jointly delimit a groove which forms part of the recess and partially receives the sealing element, and a groove width increases from an opening of the groove to a low point of the groove.

Abstract: The invention is based on a sieving device with at least one rotary drum unit comprising a plurality of sieving openings, said sieving openings being respectively arranged around a centre point of the sieving openings and being categorized in at least one structure group and at least one further structure group and at least one further structure group, wherein the first structure group the centre points of neighbouring sieving openings are arranged at a first intra-distance to one another, and wherein in the further structure group the centre points of neighbouring sieving openings are arranged at a further intra-distance to one another, wherein the smallest structure distance between a centre point of at least one sieving opening in the at least one first structure group and a nearest situated center point of at least one sieving opening in the at least one further structure group is greater than the first intra-distance.

Abstract: The invention is based on a sieving device with at least one rotary drum unit (14a; 14b) comprising a plurality of sieving openings (42a; 42b), said sieving openings (42a; 42b) being respectively arranged around a centre point of the sieving openings (42a; 42b) and being categorized in at least one first structure group (44a, 44a?, 44a?; 44b, 44b?) and at least one further structure group (46a, 46a?; 46b, 46b?), wherein in the first structure group (44a, 44a?, 44a?; 44b, 44b?) the centre points of neighbouring sieving openings (42a; 42b) are arranged at a first intra-distance (48a; 48b) to one another, and wherein in the further structure group (46a, 46a?; 46b, 46b?) the centre points of neighbouring sieving openings (42a; 42b) are arranged at a further intra-distance (50a; 50b) to one another.