| 摘要 |
The invention provides an apparatus for removing impurities from a fluid stream; the apparatus comprising a filtration unit rotatably mounted on a support structure, the filtration unit having a longitudinal axis of rotation A extending through a longitudinal tube (2) disposed centrally within the filtration unit; the longitudinal tube (2) being connected or connectable to a pressurised source of fluid requiring purification; the longitudinal tube having one or more openings for receiving fluid under pressure from the said source and one or more lateral openings (14) for introducing the fluid into the filtration unit; wherein the filtration unit comprises, in addition to the longitudinal tube: • (a) a centrifugal separation chamber (60) for separating suspended particulate matter of a first size range from the fluid stream; • (b-i) an array of secondary filters (51), (53), (55) downstream of the centrifugal separation chamber for removing impurities of a predetermined type from the fluid stream; • (c) a flow splitting chamber (56) for diverting a proportion of the fluid to a plurality of nozzles (78), the nozzles being oriented at an angle with respect to the longitudinal axis such that a pressure of fluid ejected through the nozzles provides a driving force to rotate the filtration unit; and • (d) a collector (80),(84) for collecting purified fluid from the filtration unit. |
