Collecting and purifying device for smelting tail gas

The utility model discloses a collecting and purifying device for smelting tail gas, and relates to the technical field of tail gas purification. The upper tank body is fixedly connected inside the support, the tank bottom is connected with the upper tank body through a connecting mechanism, the sealing cover is connected with the upper tank body through a fixing and locking mechanism, the activated carbon adsorption net is arranged inside the upper tank body, and the outer side wall of the upper tank body is fixedly connected with a water inlet pipe; the connecting mechanism comprises an inner sleeve fixedly connected to the top of the side wall of the tank bottom, a positioning block fixedly connected to the inner side wall of the inner sleeve, a first threaded hole formed in the outer side wall of the inner sleeve, an outer sleeve fixedly connected to the bottom of the side wall of the upper tank body, a positioning groove formed in the inner side wall of the outer sleeve and a second threaded hole formed