Abstract: A star feeder for conveying all types of bulk materials having a comminuting insert for crushing bulk material agglomerates (29). Bulk material agglomerates are conveyed into the inlet of the star feeder (1) and there pass through the comminuting insert (10), which comprises at least one shearing wall (20), which includes at least two mutually angled shearing surfaces (21, 22), which widen upward, toward the inlet direction (11) and meet centrally in the region of at least one feed edge (23).

Abstract: A star feeder for conveying all types of bulk materials and having a comminuting insert for crushing bulk material agglomerates (29) which are conveyed into the inlet of the star feeder (1) and there pass the comminuting insert (10), on which there are disposed devices for comminuting the bulk material agglomerates (29), wherein the comminuting devices are formed of at least one shearing wall (20), which shearing walls form at least two mutually angled shearing surfaces (21, 22), which widen conically to the inlet direction (11) of the bulk material upward in the inlet direction (11) and meet roughly centrally in the region of at least one feed edge (23), the longitudinal extent of the feed edge (23) widening conically in the inlet direction (11).

Abstract: The invention relates to a switch for branching off bulk material flows, the switch includes a rotary plug (1) which is arranged in a fixed housing having preferably three connection openings. In a first position the plug establishes a connection between a first pair of connection openings and, by rotation into a second position, establishes a connection between a second pair of connection openings, a gap being provided between the rotary plug (1) and the housing in such a way as to arrange the rotary plug (1) in the housing in a non-contact manner without any additional contact sealing elements. The plug (1) and/or said housing includes at least one labyrinth sealing arrangement (7).

Abstract: The invention relates to a switch for branching off bulk material flows, the switch includes a rotary plug (1) which is arranged in a fixed housing having preferably three connection openings. In a first position the plug establishes a connection between a first pair of connection openings and, by rotation into a second position, establishes a connection between a second pair of connection openings, a gap being provided between the rotary plug (1) and the housing in such a way as to arrange the rotary plug (1) in the housing in a non-contact manner without any additional contact sealing elements. The plug (1) and/or said housing includes at least one labyrinth sealing arrangement (7).

Abstract: An apparatus, which is intended for metering bulk materials, has a rotatable cell wheel (9) and a stirrer (2), arranged above the latter, and operates reliably even in the case of very sluggishly flowing bulk materials, in particular with small metering capacities, i.e., with the cell wheel (9) rotating slowly. For this purpose, the invention provides two different, isolated drives for the stirrer (2) and the cell wheel (9).