Jet propulsion pipeline polishing device

The invention discloses a jet propulsion pipeline polishing device. The device comprises a polishing block, a rotating cavity is formed in the polishing block, a polishing mechanism is arranged in therotating cavity, the polishing mechanism comprises a hollow shaft, a rotating mechanism is arranged on the left side of the polishing mechanism, the rotating mechanism comprises a rack, a transmission cavity is formed in the polishing block, the upper end wall of the transmission cavity can be provided with the rack in an up-down moving mode, a water supply mechanism is arranged on the upper sideof the rotating mechanism, the water supply mechanism comprises a pushing plate, and a pushing cavity is formed in the polishing block. When the jet propulsion pipeline polishing device is used for polishing a pipeline, the device can be moved so as to conveniently polish the pipeline, clear water can be automatically added during polishing by using the device, manual adjustment is not needed, the polishing efficiency is