Roasting furnace flue gas collecting and treating device for aluminum oxide production

The utility model discloses a roasting furnace flue gas collecting and treating device for aluminum oxide production, which comprises a flue gas collecting and treating device body and a filter screen arranged inside the flue gas collecting and treating device body. The stable connecting mechanism, the fixed pipe and the air pump are matched with the movable opening, the air bag and the cleaning strip to scrape and clean the filter screen, so that the problems that dust particles are easily accumulated at the top of the filter screen to block the filter screen in the actual use process, and the filter screen is difficult to efficiently filter and cannot be cleaned easily are solved. The problems that the filtering effect of a filter screen cannot be well ensured and the filtering effect and the working effect of the flue gas treatment device of the aluminum oxide roasting furnace are reduced due to the fact that the sprayed water is stored at the bottom of the flue gas collection treatment device body for a l