Tail gas treatment device for aluminum alloy casting

The utility model discloses a tail gas treatment device for aluminum alloy casting. Tank body, an annular pipe is fixedly arranged at the bottom in the tank body; the annular pipe is communicated withan air inlet pipe, the air inlet pipe penetrates through the tank body in a sealed mode and extends to the outer side of the tank body, an aqueous solution is placed at the bottom of the inner side wall of the tank body, and a water mist filtering net, an activated carbon filtering net, a PPS filtering felt and a heating wire net are detachably and fixedly connected to the middle of the inner side wall of the tank body in sequence from bottom to top; the gas treated by the aqueous solution is subjected to multiple filtration by the water mist filter screen, the activated carbon filter screenand the PPS filter felt; the content of dust in the gas is detected through a gas detector; and if the dust content still cannot reach the emission standard, the control valve a is opened to guide thegas into the tank body aga