Box body of pure-suction type road sweeper

The invention relates to a box body of a pure-suction type road sweeper, which is used for sweeping ground surfaces and roads in the environments such as plazas, airfields, cement plants, steel plants, electric power plants, harbors and the like and maintaining cleanliness. The boxy body of the pure-suction type road sweeper has the advantages of large volume, good dust separation effect, good back flushing effect, long filter cylinder service life and the like, and belongs to the technical field of road sweepers.