Acid and alkali resistant bag filter

The utility model discloses an acid and alkali resistant bag type filter which comprises a filter body and a filter unit arranged in the filter body, and further comprises a neutralization box, a feed pipe is arranged above the neutralization box, and a first discharge pipe is arranged below the neutralization box; a cover plate is arranged above the filter body, the neutralization box is fixedly connected with the cover plate, and the cover plate is detachably connected with the filter box body. Compared with the prior art, the sewage is firstly neutralized by arranging the neutralization tank, the corrosion of the filter bag is avoided, and the neutralization tank is arranged in the filter tank body, does not occupy other space, and is simple in structure and convenient to use. 本实用新型公开了一种耐酸碱袋式过滤器，包括过滤器本体、以及设于所述过滤器本体内的过滤单元，还包括一中和箱，所述中和箱上方设有进料管，所述中和箱下方设有第一出料管；所述过滤器本体上方设有一盖板，所述中和箱与所述盖板固定连接，所述盖板与所述过滤箱本体可拆卸连接。与现有技术相比，通过设置中和箱首先对污水进行中和处理，避免其腐蚀滤袋，且中和箱设置在过滤箱本体内部，不占据其他空间，结构简单，使用方便。