Pipeline cleaning device for central air conditioner

The utility model discloses a pipeline cleaning device for a central air conditioner, relates to the central air conditioner, aims to solve the problems that the equipment cost is too high, the operation difficulty is large, and the popularization and the use are not facilitated, and adopts the technical scheme that the pipeline cleaning device for the central air conditioner comprises a tractionmechanism, an expansion mechanism and a bendable pipe, the traction mechanism comprises a traction frame, a plurality of rollers arranged on the traction frame and a strong magnet fixed on the traction frame; the expansion mechanism comprises a PP inflatable bag and waterproof canvas, and the waterproof canvas is sleeved with an infiltration bag; the front end of the bendable tube is fixed to thetraction frame, the bendable tube penetrates through the expansion mechanism in a sealed mode, and an air tube is arranged in the bendable tube in a penetrating mode and communicated with the PP inflation bag. According to the