Automatic flue dedusting apparatus

The invention discloses an automatic flue dedusting apparatus. The apparatus comprises a dedusting tank (1), the upper end surface of the dedusting tank (1) is provided with a top cover (2) in a sealed-buckling fixed manner, the bottom of the dedusting tank (1) is provided with a material storage tank (12) with a trapezoid cross section, supporting legs (3) are respectively arranged in the periphery of the material storage tank (12), one side of the dedusting tank (1) is provided with a closed air inlet tank (4), one side of the air inlet tank (4) is provided with an air inlet (5), and the other side of the air inlet tank (4) is provided with a plurality of air inlets (6) connected with the inside of the dedusting tank (1). The apparatus has a simple structure; a first air baffle plate group, a second air baffle plate group and a third air baffle plate group which are mutually inserted are arranged in the dedusting tank, so the integral flow velocity of flue dusts entering the dedusting tank can be rapidly reduced; and air baffle plats facing the air direction are corrugated plates, so eddy flow and turbulent flow are generated, thereby particles in the deceleration flue dusts descend and fall into the material storage tank under the action of gravity.