Dust prevention device for dust swirling sedimentation

The utility model relates to a dust prevention device for dust vortex settlement. The problems that dust easily enters an electrical cabinet and easily blocks an air inlet, and time and labor are wasted in an existing device are mainly solved. The device is characterized in that a spiral guide rail (2) is arranged on the inner wall of a barrel (1) from top to bottom, an inlet in the upper end of the guide rail (2) is connected with an air outlet of a fan bin (3), and a fan (7) is fixedly installed in the fan bin (3); a dust outlet (9) in the lower end of the guide rail (2) faces the bottom ofthe barrel (1); an air inlet (5) is formed in the cylinder (1) opposite to the air inlet end of the fan bin (3); and a sealing cover (4) covers the top of the cylinder body (1). According to the dustproof device capable of achieving dust vortex-shaped sedimentation, air vortexes can be formed through the air guide rails, finally, dust in air is settled and guided out from the lower portion, time and labor are saved, and t