Dust removal device of granulator

The utility model relates to a dust removal device, in particular to a dust removal device of a pelletizer, which comprises a supporting assembly, a feeding assembly and a dust removal assembly, the supporting assembly comprises a workbench, the feeding assembly comprises a feeding tank and a first inner container, the feeding tank is positioned above the workbench, the first inner container is fixed in the feeding tank, a plurality of air holes are formed in the outer wall of the first inner container, and the dust removal assembly is positioned above the workbench. The dust removal assembly comprises a shell and an exhaust fan, the shell is fixed to the feeding tank, the exhaust fan is fixed in the shell, a double-layer dust filtering net and dust filtering cotton are installed in the shell, a protective net is installed in the shell, a stirring assembly is installed on the feeding tank, and the stirring assembly comprises a first motor; the first motor is fixed to the top of the feeding tank, and a rotatin