Stirring mechanism for 3D printing material feeding device

The utility model discloses a stirring mechanism for a 3D printing material feeding device. The device comprises a stirring shaft, a plurality of stirring structures arranged on the stirring shaft anda plurality of spray heads arranged on the stirring structures, an inlet hole facilitating input of cleaning liquid is formed in the core part of the lower end of the stirring shaft, and a flow channel facilitating flowing of the cleaning liquid and communicating with the inlet hole and the spray heads is formed in each stirring structure; the stirring structure comprises two first connecting pipes connected with the outer wall of the stirring shaft, a second connecting pipe used for connecting the two first connecting pipes, and a plurality of stirring rods arranged on the inner side of thesecond connecting pipe. According to the 3D printer material feeding device, the plurality of spray heads are arranged on the stirring structure, so that the inner wall of the material storage barrelcan be automatically flushe