Start-end and tail-end device for pipeline cleaning and dredging

The utility model discloses a pipeline cleaning and dredging head and tail end device which comprises a head end device and a tail end device, the head end device comprises a first reducing pup joint, a first blind plate is installed at the large opening end of the first reducing pup joint, and a first pressure gauge pup joint and an air compressor pup joint are communicated and fixed to the side wall of the first reducing pup joint; the tail end device comprises a second reducing pup joint, the large opening end of the second reducing pup joint is connected with a large-diameter pipeline pup joint, a second blind plate is installed at the outer end of the large-diameter pipeline pup joint, and a second pressure gauge pup joint, a booster pump pup joint, a drainage pipeline and an exhaust pipeline are fixedly communicated with the side wall of the large-diameter pipeline pup joint. According to the pipeline cleaning and dredging head and tail end device, the cleaning and dredging device can be conveniently pl