Pipeline dredge

The utility model discloses a pipeline dredge comprising a ballonet and a ventilation pipe body connected with an air source, and is characterized in that a water channel ventilation cavity communicated with the two end parts of the ventilation pipe body is arranged in the ventilation pipe body; one end part of the ventilation pipe body penetrates the ballonet and is sealed at the joint part with the ballonet; a ballonet ventilation cavity connected with an ballonet inner cavity for the aeration of the ballonet is arranged at the other end part of the ventilation pipe body; and an air sealing device for the water channel ventilation cavity and an air sealing device for the ballonet ventilation cavity are also arranged at the other end part of the ventilation pipe body. The pipeline dredge has the advantages of high dredging efficiency, simple operation, flexible assembly and disassembly, resistance to the damage on the dredged pipelines and objects, and wide application, and is suitable for use at home and be