Municipal drainage pipeline excavation-free rapid repairing device

The utility model discloses an excavation-free rapid repairing device for a municipal drainage pipeline, and relates to the field of municipal drainage. According to the excavation-free rapid repairing device for the municipal drainage pipeline, drainage pipelines are arranged at the two ends of a damaged pipe body, a splicing repairing pipe is movably inserted into the damaged pipe body, connectors are movably clamped to the two ends of the splicing repairing pipe, and the ends, away from the splicing repairing pipe, of the connectors are fixedly inserted into the drainage pipelines; a rotating head is rotationally connected into the dredging plug, arc-shaped clamping blocks are slidably connected to the two sides of the outer surface of the dredging plug, a memory spring is arranged between the two arc-shaped clamping blocks, and the rotating head is in transmission connection with the two arc-shaped clamping blocks. When the excavation-free rapid repairing device for the municipal drainage pipeline is used