Exhausting device of feeding box of electrolytic bath

The utility model discloses an exhaust device of bath feeding boxes of electrolytic baths, which belongs to the technical field of electrolytic bath production in aluminium electrolytic factories. The utility model is composed of a wide exhaust pipe (5) connected with a bath feeding box (3) and an exhaust device (6) connected with the wide exhaust pipe (5), wherein the exhaust device (6) is composed of one or more exhaust filter pipes (7) which are made of stainless steel wire filter screens. A material box of the utility model has a good sealing effect, therefore materials of alumina can not escape, overflow and leak during super dense phases conveying feeding or an electrolytic bath beating a shell for feeding so that the dust of alumina can be reduced. The utility model has the advantages that the manufacturing environment of an electrolytic bath is good, the installation and the maintenance are convenient, and the sealing efficiency of the electrolytic bath is improved. Besides, the utility model is favorable for the purification of electrolytic smoke and gas, and is favorable for the automatic control of computers.