Wet and dry dual-purpose sweeper truck filtering device

The utility model discloses a filtering device of a wet and dry dual-purpose road sweeper. The dustbin comprises a dustbin body and a sucker device connected to the lower portion of the dustbin body.A dry type filtering device is arranged on one side of the top in the garbage can; a wet filtering device is arranged on the other side of the top in the garbage can; the top of the garbage can is externally connected with a fan device communicated with the dry type filtering device and the wet type filtering device; a dry type air outlet channel is communicated between the dry type filtering device and the draught fan device, a wet type air outlet channel is communicated between the wet type filtering device and the draught fan device, a spiral air channel switching device is arranged at theposition, corresponding to the draught fan device, in the garbage can, and the spiral air channel switching device is alternately communicated with the dry type air outlet channel and the wet type airoutlet channel. According