Mixing device with mixing ring having offset channels with spaced baffles

A mixing device comprising a shaft (1), a front ring (2) and an end ring (3) connected to the shaft at a distance A from each other, and a loose mixing ring (4), which is freely rotatable and can be moved back and forth between the front ring and the end ring, wherein

• the front ring and the end ring in each case have at least one channel (2k) or (3k), respectively, which runs axially parallel, at an angle in relation to the axis of the shaft or helically, and has in each case at least two regions of different outside diameters, of which the region with the smaller outside diameter is respectively located on the side facing the mixing ring, and
• the mixing ring has a first region in which its inside diameter is large enough for it to be able to overlap with the region of smaller diameter of the front ring, has an adjoining second region, and also an adjoining third region, in which its inside diameter is large enough for it to be able to overlap with the region of smaller diameter of the end ring and the mixing ring is so long that, in its respective end positions, the other of the two rings (2) or (3) respectively is partially overlapped,
• characterized in that
• the mixing ring has on its inner side of the second region at least two channels (4k) which run axially parallel and are arranged offset in relation to each other, and the mixing ring further comprising spaced baffles arranged in the at least two channels.