Dustproof alarm system power box

The utility model discloses a dustproof alarm system power box, and belongs to the technical field of fire-fighting power box preparation. The structure comprises a power box body, a power box door is arranged on the power box body, a grid for ventilation is arranged on the outer side wall of the power box body, a supporting frame is arranged in the power box body, components are arranged on the supporting frame, a dustproof box is arranged on the inner side wall of the power box body, and an opening is formed in the side, close to the supporting frame, of the dustproof box. A first filter screen is arranged in the dustproof box in a sliding mode, a movable door is arranged on the front side of the dustproof box, a positioning block used for fixing the first filter screen is arranged on the movable door, a fan is arranged at the bottom end of the power box door, a second filter screen is arranged around the fan, and a temperature monitoring meter is further arranged in the power box body. According to the uti