Paint mist filtering device based on DPA filtering cotton

The utility model belongs to the technical field of solid particle filtering, and particularly relates to a paint mist filtering device based on DPA filtering cotton, which comprises a shell, an upper supporting plate and a lower supporting plate are arranged in the shell, the upper supporting plate is positioned above the lower supporting plate, and a first chamber and a second chamber are arranged between the upper supporting plate and the lower supporting plate. Airflow flows into the second chamber from the first chamber. The two cavities are formed in the shell in sequence, and the multiple filtering assemblies are arranged in each cavity, so that multi-stage filtering can be achieved, the filtering efficiency of paint mist generated in the paint spraying process is improved, and the problem that an existing filtering device is not high in filtering efficiency is solved; by arranging the inverted trapezoidal first cavity, the airflow speed can be increased, and the first-stage filtering efficiency is imp