Abstract: The invention relates to a sieving device for mechanically separating and extracting solid bodies or solid matter from a liquid current, in particular, to sieve gratings for process or effluent currents or for use in sewage treatment plants or hydroelectric power stations. Said device comprises a number of sieving panels (2, 2′, 2″) which are substantially arranged in a transverse direction to the direction of flow of the liquid current, are linked together, and which form a revolving endless sieve belt (1) immersing into the liquid current (20). The device also comprises a drive for the endless sieve belt (1), whereby the sieving panels (2, 2′, 2″) are arranged successively in such a way that the revolving motion of the endless sieve belt (1) is comprised within one single plane which lies substantially perpendicular to the direction of flow of the liquid current (20).