Pneumatic device for pneumatic conveyer

The invention relates to a pneumatic device for a pneumatic conveyer. The pneumatic device comprises an air compressor, a dehumidifying tank and a conveying pipeline, wherein compressed air is generated by the air compressor, is dehumidified by the dehumidifying tank, is changed into dry air, and then enters into the conveying pipeline; the pneumatic device is characterized in that an air tank is mounted between the air compressor and the dehumidifying tank; the compressed air generated by the air compressor passes by an exhaust pipeline, is cooled by a fan, enters into the air tank through a check valve, enters into the dehumidifying tank through the air tank and is dried, and then enters into the conveying pipeline. According to the invention, the air tank is added between the air compressor and the dehumidifying tank and is used for storing the compressed air; when the pneumatic conveyer runs, the compressed air is stored in the air tank by the air compressor; the intermittent rest of the air compressor is realized; the loss of the air compressor is reduced; the resources are saved.