Exhaust gas external guide fan for metal bipolar plate titanium etching process

The utility model discloses a metal bipolar plate titanium etching process waste gas external guide fan which comprises a fan body, a gas outlet pipe is arranged outside the fan body, a gas outlet is formed in the upper end face of the gas outlet pipe, the inner wall of the gas outlet is fixedly connected with a limiting frame, a filtering mechanism is arranged in the gas outlet, and the filtering mechanism is fixedly connected with the limiting frame. The filtering mechanism comprises an activated carbon adsorption plate, the upper end face of the activated carbon adsorption plate is connected with a dust filtering net through four sets of connecting rods, the upper end face of the dust filtering net is fixedly connected with bolts, the top of the inner wall of a gas outlet is fixedly connected with a skirt edge, and a waste gas treatment mechanism is installed above a gas outlet pipe. A locking groove is formed in the upper end face of the air outlet pipe. According to the utility model, the pull rod is pul