Abstract: A feeding apparatus for feeding at least one ingredient of a free-flowing bulk material to a proportioning apparatus, the proportioning apparatus having a separate hopper scale for each ingredient, the feeding apparatus being disposed above the proportioning apparatus and being composed of a number of assembled modular units corresponding to the number of hopper scales in the proportioning apparatus, each modular unit including an ingredient feed spout and a shutter for opening and closing the spout.

Abstract: A proportioning apparatus including at least one reservoir tank (1) having an outlet port (11) for pourable bulk material and a weighing tank (3) for receiving bulk material discharged from the at least one reservoir tank, the weighing tank being arranged under the at least one reservoir tank and including a weighing cell for weighing bulk material, in which it is possible to open or close the outlet port of the at least one reservoir tank by using a shut-off device (2), and in which each shut-off device associated with a reservoir tank has a tubular housing (21) with a longitudinal axis LA, as well as a passage opening (20) for bulk material extending transversely across the longitudinal axis of the housing and with two breakthroughs (20a, 20b) extending through lateral surfaces of the housing, the outlet port of the at least one reservoir tank communicating with the passage opening, and in which a closure element (22) having a cross-section corresponding to that of the tubular housing, can be shifted inside