Prevent pipeline folding and arrange acid -base waste gas updraft ventilator

The utility model discloses an updraft ventilator technical field's a prevent pipeline folding and arrange acid -base waste gas updraft ventilator, including the main exhaust pipe way, the inner chamber that main exhaust pipe said is provided with the stay tube, the inner chamber of stay tube is provided with the acid and alkali -resistance pipe, the extraction fan is all installed to the inner chamber left and right sides of acid and alkali -resistance pipe, the inner chamber of acid and alkali -resistance pipe just is located and is provided with high -purity mullite pottery cross support between two sets of extraction fans, all be provided with high -purity mullite pottery supporting ring between adjacent two sets of supports of high -purity mullite pottery cross support, through this prevent pipeline folding and arrange acid -base waste gas updraft ventilator's setting, can say to main exhaust pipe and support to acid and alkali -resistance intensity is high, and life is of a specified duration. 本实用新型公开了抽