Sulfur-containing tail gas treatment device in secondary lead smelting

The utility model relates to the field of secondary lead smelting tail gas treatment equipment, in particular to a sulfur-containing tail gas treatment device in secondary lead smelting. Comprising a box, a liquid inlet pipe, a liquid discharge pipe, an air inlet pipe and an air outlet pipe which are communicated with the box are fixed to the box, a square pipe is fixed to the lower portion in the box, the right end of the square pipe extends out of the box, a scraper is arranged at the left end in the square pipe and makes sliding contact with the inner edge of the square pipe, a sealing plate is arranged at the right end in the square pipe in a sealed mode, and a fixing rod penetrates through the sealing plate and then is fixedly connected with the scraper. A transverse telescopic cylinder is fixed to the rear end of the box body, a telescopic rod of the telescopic cylinder is fixedly connected with the right end of the fixing rod through a connecting rod, holes are formed in the periphery of the square pip