Waste gas treatment system for internal mixer

The utility model discloses a waste gas treatment system for an internal mixer. In a mode of replacing a waste gas travel pipe with a slope-type air draft pipe and a delivery pipe and replacing a dust collecting bag into a pleated dust-collecting filter cylinder, the efficiency of dust collection can be greatly enhanced while the problem of pipe clogging can be solved, and recoverable materials in waste gas can be recovered, then the consumption of materials in the process of production is reduced. The waste gas treatment system for the internal mixer disclosed by the utility model comprises a waste gas flowing pipeline, a coconut shred oil removal device, a filter cylinder dust removal device, an activated carbon deodorization device and a carbon black recovery bucket which are sequentially connected; the internal mixer comprises an upper auxiliary machine, a main machine and a lower auxiliary machine; and the waste gas flowing pipeline is connected with the lower auxiliary machine, and comprises an air draf