除塵器引風機把含塵氣體從進氣口引入中殼體內，干凈的氣體透過濾袋由文氏管進入上殼體，而由凈氣出口排出，而粉塵被阻留在濾袋外壁，隨著時間的延長，吸附在濾袋上的粉塵越來越厚，濾袋阻力越來越大，此時，脈沖控制儀發出信號，程序自動控制各脈沖閥的開關，使高壓氣源經噴吹孔、文氏管向濾袋內噴射，由于高壓氣的作用，使濾袋發生急劇的膨脹引起沖擊振動，使吸附在濾袋表面的粉塵抖落在灰斗里由輸灰機構排出。

The dust-laden gas is introduced into the middle shell from the inlet by the induced draft fan, and the clean gas enters the upper shell the filter bag and the venturi tube, and is discharged from the clean gas outlet, while the dust is retained on the outer wall of the filter bag. With extension of time, the dust adsorbed on the filter bag becomes thicker and thicker, and the resistance of the filter bag becomes greater and greater. At this time the pulse control instrument sends a signal, and the program automatically controls the opening and closing of each pulse valve, so that the high-pressure gas source is sprayed into the bag through the spray hole and the venturi tube. Due to the effect of high-pressure gas, the filter bag undergoes a sharp expansion, which causes an impact, so that the dust adsorbed on the surface of the filter bag falls into the ash bin and is discharged by the ash conveying mechanism