Pipeline dredging device

The invention provides a pipeline dredging device which comprises a washing tower, the bottom end of the washing tower is connected with a pipeline, one end of the pipeline is connected with a high-pressure flash tank, the surface of the pipeline is provided with a first hand valve, a second hand valve, a third hand valve and a fourth hand valve, a stop valve is arranged on the surface of the pipeline, and a black water angle valve is arranged on the surface of the pipeline. The pipeline dredging device is arranged on one side of the pipeline surface, the slag conveyor is arranged at one end of the pipeline, and the first valve is arranged on the pipeline surface. According to the pipeline dredging device provided by the invention, the pipeline dredging device is arranged on one side of the pipeline, so that dirt and ash generated after the washing tower is used for a long time can be cleaned, and the situation that the washing tower is blocked and cannot be normally used is prevented; the high-pressure grey