The fzlq fully automatic sewage filtering device adopts the following method to increase its filtering reliability : 1 ) increasing filtering area to reduce hydraulic losses ; 2 ) reducing the ratio of cleared filtering screen area to working filtering screen area to enhance the reliability of operating filtering device ; and 3 ) using rational flow channel and flow direction to clear the filtering screen 国产fzlq型全自动清污滤水器，用增大过滤面积来降低过流水力损失；用减小被清洗的滤网面积与工作滤网面积的比例来提高在线运行的滤水器的稳定性；采用合理的流道及水流方向清洗滤网，提高过滤的可靠性。
