Aluminum alloy anode oxidation device

The invention discloses an aluminum alloy anode oxidation device which solves the problem that water beads formed by liquefying waste gas due to cold can not accumulate and drip. The technical scheme is as follows: the aluminum alloy anode oxidation device comprises an electrolysis bath, a travelling crane, a bracket and a PLC (programmable logic controller) control cabinet, wherein a slide rail is laid on the bracket; a draft hood is fixed to the bracket; the draft hood comprises a hood body, a gas suction cavity is arranged in the hood body, the lower end of the hood body is open, and the opening is provided with ventilation sponge and fixed with a ventilation plate; the ventilation sponge and ventilation plate are laminated from bottom to top; the opening extends outwards to form a fixed side plate; at least one gas suction pipe is arranged in the gas suction cavity and provided with a plurality of gas suction holes; one end of each gas suction pipe is communicated with a draft tube, and the other end is closed; and the draft tube is positioned on the side surface of the hood body. The device can ensure the exhaust efficiency and prevent the hot vapor from liquefying into water beads which can drip.