Our company produces dry filters that filter moisture from gases under normal pressure. The materials used are 304 and Q235; The desiccant is placed in the filter element, which is easy to operate and maintain. The dryer has a lightweight structure, light weight, and quick installation, ensuring oil safety, energy conservation, and ensuring equipment dryness and cleanliness. The dryer is a supporting equipment for the ethanol gasoline tank, which can effectively prevent moisture from entering the tank, greatly reducing the contact between moisture and ethanol, and overcoming phenomena such as slow starting and sluggish climbing of the car. The diameter of the dryer includes DN40, DN50, DN80, N100, etc., and the connection methods include flange, internal thread, external thread, variable diameter, etc. A dryer is an air purification device mainly used in conjunction with equipment to reduce moisture in the air. This utility model provides a dryer that can remove moisture from the air. The utility model comprises a body with flanges at both ends, and the key structural point is that a desiccant is installed in the drying frame inside the body, and the side cover of the body is fixed to the body with a lock buckle.