Wet-type dust collector

The invention relates to a wet-type dust collector, which comprises an upper box body and a lower box body fixedly connected with each other, wherein a fan is arranged on the top of the upper box body; a despin mechanism which is fixed at the air inlet of the fan is arranged in the upper box body; an air inlet pipe with a necking is arranged on the lower side wall of the upper box body; the lowerpart of the upper box body is provided with a dust wetting region which corresponds to the air inlet pipe; a water inlet is formed on the side wall of the lower box body; and a blow-down apparatus isarranged in the lower box body. A necking is formed in the air inlet pipe, and a uniform water mist curtain is formed by water in the lower box body according to the Venturi principle for wetting dust, so that spark caused by friction, static electricity and the like is eliminated effectively, and the safety problem which is not solved in a dry type dust collector is solved; and dust is exhaustedin the form of sludge, so t