Frequency converter mounting box with moisture-proof and dust-proof functions

The utility model discloses a frequency converter installation box with moisture-proof and dust-proof functions. A filtering device comprises a water vapor filtering device and a dust filtering device. The dust filtering device comprises a water tank, a filtering pipe, a filtering cylinder and a second exhaust port, one end of the filtering pipe penetrates through the side face of the water tank,and the other end of the filtering pipe is arranged in the water tank; the filter cartridge is arranged on the upper side of the inner cavity of the water tank; one end of the filter cartridge is connected to the second exhaust port; the water vapor filtering device comprises a drying agent; by adopting the technical scheme, the filtering device comprises the water vapor filtering device and the dust filtering device; the dust filtering device comprises a water tank, a filtering pipe, a filtering cylinder and a second exhaust port, one end of the filtering pipe penetrates through the side faceof the water tank, and th