Dust separator

The utility model discloses a dust separator. The dust separator comprises an outer barrel, an inner barrel sleeved with the outer barrel, a feeding port connected with the inner barrel, a dedusting spiral rod sleeved with the inner barrel, and a drive motor driving the dedusting spiral rod to rotate. The inner barrel is internally provided with a plurality of dedusting through holes, and the outer barrel is of a closed structure. The outer barrel is provided with an air suction hole used for being connected with an exhaust fan and a slag discharging port used for discharging slag. By means of the structure, dust and silt can be effectively separated from materials primarily, and secondary pollution to the environment cannot be caused. Due to the fact that the silt content of the materials is reduced, the cleaning difficulty of subsequent materials is lowered, the waste water processing difficulty can be lowered, the environment pollution is reduced, and the later yield can be improved due to lowering of the cleaning difficulty.