袋式反吹除塵器分正壓式(又稱壓入式)和負壓式(又稱吸入式)，本說明書按負壓式介紹。

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　　袋式反吹除塵器的工作原理與結構特征:吸附在濾袋的內壁上，凈化后的氣體經袋濾室，通過設備頂部切換閥經排管吸入風機內，再經排氣筒排入大氣中。

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　　袋式反吹除塵器的用途： 袋式反吹除塵器廣泛應用于鋼廠、冶煉廠、水泥廠、炭黑廠、電站等企業冶煉、粉碎、篩分和燃燒所產生的煙塵凈化及回收，它是保護操作者和身心健康，農作物的生長、機械設備的磨損、社會環境的污染和有用粉塵的回收利用降低成本設備。

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