Pipeline inner wall grinding equipment

The utility model relates to the technical field of pipeline polishing, in particular to pipeline inner wall polishing equipment which is characterized in that a moving frame is slidably connected to a horizontal driving mechanism, a rotating pipe is rotatably connected to the moving frame, the moving frame is connected with a rotating driving mechanism used for driving the rotating pipe to rotate, and a polishing roller is communicated to the rotating pipe; the air suction mechanism is fixedly connected to the moving frame and communicates with the rotating pipe. The grinding roller comprises a roller body, a channel, a plurality of through holes and grooves, the channel is formed in the roller body and communicated with the rotating pipe, the through holes are formed in the roller body and communicated with the channel, and the grooves are formed between the adjacent through holes. The air suction mechanism is started to extract air, the air flows in the channel, and the flowing air takes away chippings in