Mixing device (1) with at least two augers (2, 3). Between the augers on either side of the mixing chamber a distributor cone (14) is provided with a bevelled edge (15) which extends upwards from a lower tip on the bottom to a top (16) on or near the wall (7), wherein on either side of the bevelled edge (15) a guiding surface (18, 19) inclines obliquely towards the bottom. On the underside of the bevelled edge a shoe (25) is mounted with on either side of a free folding edge (29) a guiding surface with a side (27) which connects to the bottom (6) and a side (28) which connects to the distributor cone (14). The incline of folding edge (29) is less steep than the incline of the bevelled edge (15) of the distributor cone (14).