Automatic derusting and paint spraying equipment for inner walls of pipelines

The utility model discloses automatic derusting and paint spraying equipment for the inner walls of pipelines. The automatic derusting and paint spraying equipment mainly comprises a derusting device, a power device and a paint spraying device. The derusting device and the power device are fixedly connected with a universal coupler, the paint spraying device and the power device are movably connected with a hinge seat through a hook, tension springs of the derusting device are mounted in snap grooves of a fixed plate, tension shafts are mounted on the fixed plate through sliding bolts, and an accumulator and a driving motor are sequentially mounted on the bottom plate of the power device. A worm is connected with the driving motor through a coupler, a worm gear is mounted on a front driving shaft, and a rust-absorbing felt ring sleeves the outer ring of a cylinder of the paint spraying device. The automatic derusting and paint spraying equipment integrating with several functions can derust, clean and spray p