Pipeline structure, pipeline system and stirring equipment

The utility model provides a pipeline structure, equipment and a pipeline system. The pipeline structure comprises a first pipeline, a second pipeline and a fastening device, one end of the first pipeline is connected with one end of the second pipeline, and the end parts of the first pipeline and the second pipeline at the joint are obliquely arranged; the fastening device is detachably arranged outside the joint of the first pipeline and the second pipeline in a sleeving mode and used for fastening the first pipeline and the second pipeline. Wherein the first pipeline and the second pipeline rotate at the joint, so that the rotation angle between the first pipeline and the second pipeline is adjusted. According to the pipeline structure, the equipment and the pipeline system provided by the utility model, the butt joint surfaces of the pipelines are processed to form the inclined structures, and the fixing device for fixing the two pipelines is arranged, so that the rotation angles of the pipelines can be a