Road dust removal and sludge suction dual-purpose vehicle

The invention discloses a road dust removal and sludge suction dual-purpose vehicle which is characterized in that a coarse filtration box (17) and a fine filtration box (4) are mounted on a main vehicle (9); a dust collection disc (11) is communicated and connected with the coarse filtration box (17) through an air suction pipe (12), and is communicated and connected with a high pressure fan (2) through an air blow pipe (10); the air suction pipe (12) and the air blow pipe (10) on the dust collection disc (11) are communicated and connected with each other through a dust removal air duct (14); the high pressure fan (2) is communicated and connected with the coarse filtration box (17), and is communicated and connected with the fine filtration box (4) through a fine filtration box air blow pipe (3); an engine (1) is mounted on the main vehicle (9); a sludge reamer (19) is fixed at the lower part of a sludge suction pipe (13); and a hydraulic motor (20) and blades (21) are fixedly mounted in the sludge reamer