The invention relates to a device and a method for metering pourable feed material (12), said device comprising a housing (2) which extends along an axis (3) and has a bottom panel (4), a cover panel (5) which is at an
axial distance therefrom, and a circumferential wall (6) connecting the bottom panel (4) and the cover panel (5), which all enclose a working chamber (7). A rotary wheel (28) is located in the working chamber (7), which rotary wheel rotates about the axis (3) and has multiple cells (33) which are arranged, concentrically about the axis (3), along a number of n circular paths (32.1, 32.2, 32.3, 32.4), wherein the cells (33) on a first circular path (32.4) are arranged at a circumferential offset v with respect to the cells (33) on another circular path (32.2). The upper faces of the cells (33) facing the cover panel (5) and the lower faces of the cells (33) facing the bottom panel (4) are open and form, together with the cover panel (5) and the bottom panel (4), chambers rotating about the axis (3). The housing (2) has an inlet opening (8) via which the feed material (12) can be fed to the cells (33) of the rotary wheel (28), and an outlet opening (9) via which the cells (33) of the rotary wheel (28) can be emptied. During rotation of the rotary wheel (28), the filled cells (33) enter the region of the outlet opening (9), wherein the
cell walls of each
cell (33) form, together with the outlet opening (9), a partial cross-section Ateil which is dependent on the
angle of rotation and is formed during said entry. The aim of the invention is to ensure the most continuous
material flow possible during the metering process. In order to achieve this aim, the circumferential offset v between a first
cell (33) on the first circular path (32.4), which cell is leading in the direction of rotation (38), and another cell (33) on the other circular path (32.2), which cell is directly following in the direction of rotation, is formed in such a way that, when the other cell (33) begins to enter the region of the outlet opening (9), the partial cross-section Ateil of the first cell (33) corresponds to x * 1 / n of the full cross-section Avoll of the first cell (33), where x lies in the range between 0.6 and 1.4.