Pneumatic conveying system capable of automatically adjusting pipeline pressure

The utility model relates to the technical field of pneumatic conveying, and discloses a pneumatic conveying system capable of automatically adjusting pipeline pressure, which comprises an air supply system and a material conveying system, the air supply system comprises a fan, the fan is communicated with an air supply pipeline, the air supply pipeline is communicated with a pressure relief pipeline, and a pneumatic valve is arranged between the air supply pipeline and the pressure relief pipeline. An intelligent pressure controller is further arranged on the air supply pipeline and electrically connected with the electromagnetic valve, and the electromagnetic valve is in control connection with the pneumatic valve. A certain pressure range value is set in the intelligent pressure controller, the pressure in the air supply pipeline can be detected, the intelligent pressure controller controls the pneumatic valve to be opened and closed through the electromagnetic valve, and therefore the pipeline pressure in