The invention discloses a municipal building waste crushing device with a dust removal function. The municipal building waste crushing device comprises a crushing box, a coarse smashing chamber, a fine smashing chamber, two
servo motors, crushing knives and a dust removal box, the crushing box is internally provided with the coarse smashing chamber and the fine smashing chamber, a feeding inlet isformed in the top of the crushing box, a controller is arranged on one side of the feeding inlet, two crushing rollers are arranged in the coarse smashing chamber in parallel, the coarse smashing chamber and the fine smashing chamber are partitioned by a sieving plate, the sieving plate is evenly provided with a plurality of through holes, the two
servo motors are mounted in the fine smashing chamber, motor shafts of the two
servo motors are axially connected with two rotating shafts correspondingly, the crushing knives are arranged on the two sides of the two rotating shafts, the directionsof the two rotating shafts are opposite, by arranging the crushing rollers, building waste is preliminarily smashed firstly, coarsely smashed and then smashed by the crushing knives, smashing is morethorough, through mutual action of a water pump, an atomizing
nozzle, the dust removal box and a suction ventilator, dust generated in the crushing process is absorbed through water mist, and the effect is good.