Tail gas dedusting and purifying device

The invention discloses a tail gas dedusting and purifying device, and belongs to the field of tail gas treatment.The device comprises a smoke exhaust pipe and a first smoke inlet pipe communicated with the smoke exhaust pipe, the side wall of the smoke exhaust pipe is communicated with a mounting cylinder, the mounting cylinder is parallel to the axis of the smoke exhaust pipe, a rotating disc is rotationally connected into the mounting cylinder, and a plurality of electrode plates are connected to the rotating disc in an annular array mode; the plurality of electrode plates are driven by the turntable and are alternately positioned in the smoke exhaust pipe; a rotating rod is rotationally connected to the side wall of the rotating disc through a fixed shaft, a gear is fixedly connected to the top of the rotating rod, teeth matched with the gear are arranged on the inner wall of the mounting cylinder, a reciprocating screw is coaxially connected to the bottom of the rotating rod, a scraping block is slidably