| 摘要 |
A filtration equipment of which structure is improved to efficiently remove suspended solids, algae, fine particles and so on remained in river water, underground water, tap water and so on is provided. A filtration equipment comprises: an outer cylinder member(110) having a plurality of raw water inflow holes(110a) passing through inner and outer peripheral surfaces thereof; an inner cylinder member(120) which has a plurality of filtered water inflow holes(120a) passing through inner and outer peripheral surfaces thereof, and is disposed within the outer cylinder member; a filtering material disposed between the outer and inner cylinder members to filter raw water to produce filtered water; a lower ring pipe(140) which is disposed on an outer side of a lower part of the outer cylinder member to surround the raw water inflow holes, forms an annular internal space, and has a raw water inflow port(140a) for flowing the raw water into the internal space; filtered water discharge pipes(150) are formed of which one ends are connected to the inner cylinder member, of which the other ends pass through a side face of the outer cylinder member in a diameter direction, and a plurality of the filtered water discharge pipes are formed in a circumferential direction of the inner cylinder member; an upper ring pipe(160) which is disposed on an outer side of an upper part of the outer cylinder member to surround the filtered water discharge pipes, forms an annular internal space, and has a filtered water discharge port(160a) connected to the internal space; a cleaning water inflow pipe of which one end is connected to the raw water inflow port, and of which the other end is connected to a treated water tank; a cleaning water discharge pipe connected to an upper portion of the outer cylinder member; and an air inflow pipe connected to a lower portion of the outer cylinder member.
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