| abstract |
Device for mixing flowable materials, in particular building materials, with a) at least one feed zone (2) for feeding at least one starting material, b) at least one mixing zone (4) connected to the feed zone (s) with at least one mixing device (12) arranged therein or can be arranged, preferably rotatable or rotating about an axis of rotation, for mixing the at least one starting material, c) at least one outer mixed-zone tube (6) and at least one inner mixed-zone tube (5) which is arranged or can be arranged at least predominantly within the outer mixing zone tube, d) wherein a tube wall (50) of the inner mixing zone tube encloses the at least one mixing zone, e) wherein the inner mixing zone tube at least predominantly consists of a material which is elastic compared to the material of the outer mixing zone tube, and f) wherein the inner mixing zone tube from the outer mixing zone tube, in particular for cleaning, is removable or is releasably held in the outer mixing zone tube. |