Dust collection system

The invention relates to a dust collection system. The system comprises a cyclone type dust filtration assembly, a dust collection barrel and a bearing frame. The dust collection barrel is provided with an assembling convex rib, the bearing frame comprises a frame body and a supporting plate arranged on the frame body, and the supporting plate is provided with a through hole which is arranged corresponding to a dust discharging port and at least two assembling claws located on the two opposite sides of the through hole. Each assembling claw is provided with a connecting section, an extending section connected with the connecting section and a limiting section connected with the extending section, and the limiting section is provided with a limiting protruding block arranged in a directionfacing the though hole. When the two assembling claws are not stressed, the movement of the assembling convex rib is limited by the limiting section, so that the dust collection barrel is fixed on theframe body. When at least