Cylindrical liquid filtering device with central rotor, supported filter elements, and divergent inner wall radii that form curvilinear wing-shaped bulges to guide the liquid toward the filter elements

A device for filtering liquids, having a container, units for introducing a liquid to be filtered into the container, a container outlet for unfiltered liquid to be discharged from the container, and at least one rotor, which is drivable to rotate around the container axis, having a hollow shaft mounted in an end wall and a support device fastened thereon for filter elements, which are arranged with a clearance to the container axis or rotate around their own axis, and whose interior opens via the support device and the hollow shaft out of the container as the discharge for filtered liquid, wherein the inner wall of the container circumferential shell has a first container internal radius in the container circumferential direction and has second and third container internal radii less than the first container internal radius to form a bulge in the inner wall between the second and third container radii, the bulge comprising a guide unit which guides the liquid toward the filter elements,

• wherein the container circumferential cross-section of the inner wall of the container circumferential shell is divided into at least two ring segments and at least one ring segment contains the first container internal radius between the second and third container internal radii, and
• wherein each ring segment has at least first, second, third and fourth sections, the second section being interposed between the first section and the third section, the first section having an at least approximately uniform fourth container internal radius so that the liquid to be filtered is guided undisturbed, decelerated, and calmed in the first section, the second section having a first radius of curvature smaller than the fourth container internal radius, the third section having a second radius of curvature smaller than the first radius of curvature so that the liquid to be filtered is subsequently accelerated in the third section, and the fourth section leading toward the container interior.