The present invention discloses a gas curtain control type
flue dust collecting apparatus, which comprises a gas
nozzle, a bracket for installing the gas
nozzle, a baffle, a wind box, a bracket for installing the wind box, a gas inlet pipeline and a gas
discharge pipeline, wherein the gas
nozzle and the wind box are respectively arranged on both sides of a
zinc pot, the gas inlet end of the gas nozzle is connected with the gas inlet pipeline, the wind outlet of the gas nozzle presents a slit shape, the
direction angle and the installation height of the wind outlet can be adjusted, the wind inlet of the wind box is a mesh separation plate, through holes are distributed on the separation plate, the through hole distribution density is affected by the work-piece immersion plating inclination angle, the wind
discharge port of the wind box is connected with the gas
discharge pipeline and a
flue dust treatment device, the baffle is arranged on the end portion of the
zinc pot, and the length of the baffle and the width of the
zinc pot are the same. According to the present invention, the apparatus is suitable for collection of the acid mist in the
acid washing groove in the hot immersion plating process
acid washing process when the assembled components of the apparatus are made from the
acid resistance and alkali resistance materials; and the apparatus has characteristics of simple structure, easy installation, good
flue dust or acid mist collection effect, and low
operating energy consumption.