The filter drier is mainly used to filter impurities. Today's environment is deteriorating day by day, people's requirements for the quality of life are getting higher and higher, and the filtration and protection of impurities in machinery and equipment is extremely important. The air is filled with dust particles that we cannot see in the reform. Inhalation of the human body will adhere to the surface of the lungs, and pneumoconiosis will form over time, which is extremely harmful to the human body. Moreover, for enterprises, it will also affect the use and life of equipment.