Dust removal and ventilation system externally connected with pulverizer

The utility model relates to the technical field of crusher equipment, in particular to a dust removal and ventilation system externally connected with a crusher, which comprises a dust collection box, a first filter box, a second filter box, a fan and a collection box, the working pulverizer is placed in the dust collection box, the main pipeline is connected with a pulverizing chamber of the pulverizer through the U-shaped pipe, the auxiliary pipeline is connected with the dust collection box, and collected dust is screened, filtered and collected sequentially through the first filter box and the second filter box. According to the pulverizer with the loose and aged structure caused by long-term use, the problem that dust passes through a feeding port, a pulverizing chamber and the loose structure can be effectively solved through external connection of the pulverizer, the environment and the body of an operator are protected, and meanwhile, the cost can be effectively saved due to the fact that equipment d