Compressed air system

The invention discloses a compressed air system, which belongs to the technical field of compressed air systems. The system comprises a conveying pipeline, and an air compressor, an air storage tank,a first precision filter, a freeze dryer and a second precision filter which are sequentially connected through the conveying pipeline. Two stages of precision filters are arranged in the compressed air system, so that impurities such as moisture and oil mist in the compressed air can be fully removed; when the compressed air obtained through the compressed air system is applied to drying of the green body of the ceramic sanitary ware, the drying speed of the green body can be increased, and impurities are prevented from being introduced to the surface of the green body in the green body drying process; meanwhile, the compressed air is used in the glaze spraying process, impurities cannot be introduced into the used glaze, the glaze spraying quality is guaranteed, and the quality of ceramic sanitary ware products