Coal Mining Machine

The main fan of the coal mine refers to the main fan installed on the ground of the return air shaft in the coal mine, and the service scope is the whole mine or a partition. Each mine must install no less than two main fans of the same capacity, one for standby and one for operation. Mine fans are divided into main fans (main fans), local fans (local fans), and auxiliary fans (auxiliary fans) according to their service scope and ventilation capacity.