Wet type dust collector is a device which makes dust-containing gas contact with liquid (half water), uses inertial collision of water droplets and particles and other functions to capture particles; it is composed of water storage tank, dust collection pipeline, dust chamber, dust removal fan, dust removal pump, mud removal system, dust collecting hopper, cyclone separator, maintenance platform, spray system, explosion-proof window. The ports and other parts are made up of explosion-proof motors, which have remarkable improvement in performance. It can not only meet the dust removal effect with high efficiency, but also effectively control and reasonably remove the hidden safety problems, so that the safety performance is greatly improved with the dry dust collector.