The invention relates to a separating device, which is an adjusting
fiber filter used for water and
aqueous solution comprising a shell body, a water inlet and a water outlet are arranged on the shell body, a fixed
orifice plate and a floating
orifice plate are arranged in the shell body, a
fiber cluster material positioned between a fixed
orifice plate and a floating orifice plate is provided with a
filter material density adjusting device and the
gas mixing equipment, the invention is characterized in that: the
filter material density adjusting device has the structures that a frame is arranged on the device for fixedly connecting with the floating orifice plate, a closed water chamber is arranged in the frame, a plurality of aqueducts are arranged in the closed water chamber, a square-cavity of the closed water chamber is connected with an
exhaust pipe, a water filling
pipe and a drainage
pipe by a soft cannula; a directive wheel contacting with the shell body is arranged on the side wall of the frame; the center in the shell body is provided with a guiding support
pipe; the floating orifice plate may be a screen mesh. The invention can closely
pile and press or fully extend and loosen the
fiber cluster material through the
filter material density adjusting device, and has advantages of high filtering precision, large area, high capacity of
pollutant cutting, long filtering period, large water preparation amount, good filtering quality and reliable performance.