Flue gas purification device

The flue gas purification device comprises a purification kettle, a spraying mechanism, a gas inlet pipe and a pollution discharge mechanism, the bottom of the purification kettle is in semi-arc transition, a pollution discharge opening is formed in one side of the bottom of the purification kettle, the pollution discharge mechanism is arranged at the bottom of the inner wall of the purification kettle, and the pollution discharge mechanism comprises a push plate, a lead screw and a motor. The lead screw is installed on the inner wall of one side of the purification kettle, one end of the lead screw is connected with the motor, the bottom of the push plate is matched with the bottom of the purification kettle in shape, flue gas entering the purification kettle directly makes contact with a purification solution, the purification solution can preliminarily adsorb dust in the flue gas, and then the dust in the flue gas is removed in the process that the gas flows out of the top of the purification kettle. Secon