Stirring device for coal mixing device

The utility model discloses a stirring device for a coal mixing device. The stirring device comprises a shell (1) for placing coal of different heat quantities, at least two stirring shafts arranged on the shell (1) and stirring blades (4) arranged on the stirring shafts, wherein the shell (1) is respectively provided with cylindrical cavities which are contacted and connected with the top end surfaces of the stirring blades (4) and are mutually communicated; and the cavity spaces for placing the coal of different heat quantities, of the shell (1) are smaller, so that the shell (1) does not have the same cavity space with a concrete stirring device, a mixing material is delayed in the material mixing cavity, and thus, the mixing uniform performance index of the coal is improved.