Sludge collecting pipeline for sewage treatment

The utility model belongs to the technical field of sewage treatment, in particular to a sludge collecting pipeline for sewage treatment, which is characterized in that a support rod is mounted on the inner side wall of the pipeline through a fixing unit; the end part of the supporting rod is fixedly connected with a supporting plate; a rotating rod is rotationally connected into the supporting plate. The end part of the rotating rod is sleeved with a protective cover; the side end of the protective cover is fixedly connected with a guide plate; the top of the guide plate is fixedly connected with a motor; a supporting plate drives a supporting rod to be inserted into a pipeline, then fixing is conducted through a fixing unit, and after fixing is completed, a motor is started to rotate, so that the motor drives a second bevel gear to rotate, when the second bevel gear rotates, a first bevel gear is driven to rotate, and when the first bevel gear rotates, a rotating rod is driven to rotate; and the rotating ro