Purging pipeline system

The utility model provides a purging pipeline system, which belongs to the technical field of pipe cleaning and comprises an air supply source and a purging pipe connected onto the air supply source, the air supply source is connected with the purging pipe through a pneumatic diaphragm valve, and the air supply source is connected with a pneumatic actuating end of the pneumatic diaphragm valve through a pneumatic reversing valve. The air supply source is connected with the reversing execution end of the pneumatic reversing valve through a pressure regulating valve and an air supply switch which are sequentially connected in series in the air supply direction. According to the pipeline purging system provided by the utility model, the air switch indirectly controls the air supply of the air supply source to the cleaning pipe, and the pressure of airflow flowing through the air supply switch is reduced through the pressure regulating valve, so that the air supply switch is convenient to operate, and the difficu