Self-cleaning and cutting device for high-temperature and high-pressure pipeline before welding

The utility model discloses a high-temperature high-pressure pipeline pre-welding self-cleaning cutting device, which comprises a cutting mechanism and a cleaning mechanism, and relates to the technical field of pipeline processing, an operator can first insert two ends of a pipeline into the inner side of a fixing sleeve, and then a clamping plate clamps and fixes the two ends of the pipeline on the inner side of the fixing sleeve; when the two ends of the pipeline are fixed, the rotating disc drives the fixing sleeve to rotate synchronously through the connecting rod, so that the pipeline can rotate at the upper end of the workbench, and when the pipeline rotates at the upper end of the arc-shaped pressing plate, a frosted layer on the surface of the arc-shaped pressing plate rubs the surface of the pipeline; according to the pipeline cleaning device, the water storage tank is arranged, so that impurities such as rust and paint in a pipeline welding area can be cleaned, an operator can start the water pump