Environment-friendly waste gas treatment device for casting workshop

The utility model discloses an environment-friendly waste gas treatment device for a casting workshop, belongs to the technical field of waste gas treatment, and aims to solve the problems that in the prior art, activated carbon is always in a standing state, and in the continuous waste gas treatment process, the waste gas cannot be continuously treated. When the waste gas treatment efficiency is improved, part of the activated carbon which firstly contacts with the waste gas in the adsorption treatment box is saturated by adsorbing the waste gas, so that the ventilation quantity of an air pipe is reduced, and the other part of the activated carbon which is subsequently contacted with the waste gas is not saturated by adsorbing, so that the activated carbon in the adsorption treatment box is replaced to improve the waste gas treatment efficiency; and part of activated carbon is wasted. The waste gas treatment device comprises an air pipe and a mounting plate arranged at the top of the air pipe, a plurality of