A gas purifying apparatus and a method thereof are disclosed. The second disk is provided with first and second stoppers that limit its angle of rotation. The second reagent includes a base and has a pH value of about 8 to 12. The width of the blade at the portion immediately adjacent to the blade housing and opposite the blade point is substantially equal to the diameter of the blade housing. Therefore, the single-point failure is effectively prevented, the flexibility and extensibility are improved, it is convenient for networking, and the network coverage is enlarged. The multiple custom-fitted iron sets can be achieved by pivoting these sets off a common 6-iron.