A kind of water coke slurry device of precipitating filtering of what is closed in this creation system,System is equipped with a lautertuns,It is respectively equipped with one and enters pool and an exhalant region,What this enter between pool and the exhalant region be equipped with an at least overflow chamber,The bottom of the overflow chamber is equipped with one and collects mouth； The what exhalant region is arranged in one crosspoint,The crosspoint is equipped with a water inlet end and a water outlet,A strainer is provided on the water inlet end,The inside of the strainer is equipped with a first bubble pipe,And outside is equipped with one second bubbler tube,The first bubble pipe and second bubbler tube connect to a pulsometer again,The another crosspoint system is equipped with a suction pump,The suction pump is equipped with a water-supply-pipe and is connected to the water outlet； One filter material is arranged in the what overflow chamber； Using can keep for a long time strainer is clean not to be blocked,And swap sewage with clean water.本創作係關於一種沉澱過濾之水交換裝置，係設有一過濾槽，其分別設有一入水區及一出水區，於該入水區及該出水區之間係設有至少一溢流室，該溢流室的底部設有一匯集口；一交換單元設置於該出水區，該交換單元設有一進水端及一出水端，該進水端上設置有一濾網，該濾網之內側設有一第一氣泡管，而外側設有一第二氣泡管，又該第一氣泡管及該第二氣泡管係連接至一氣壓泵，另該交換單元係設有一抽水泵，該抽水泵設有一輸水管連接至該出水端；一濾材設置於該溢流室內；藉以能長久保持濾網乾淨不被阻塞，而持續使污水與乾淨的水進行交換。
