| 摘要 |
A filtering apparatus is provided to have excellent maintainability and a few components and to be assembled easily because an inner filter medium and an outer side filter medium are connected and integrated each other and have a structure driven by common driving system. A filtering apparatus comprises an inner filter medium(1), an outer filter medium(2) and a partition(3). The inner filter medium and the outer side filter medium are arranged as a concentric form and have a cylinder or a conical shape. The partition is prepared in a filtering space(4) between the outer filter medium and the inner filter medium and has a helix form. One or more the inner filter medium and the outer filter medium rotates along a circumference of center. The partition of helix does not rotated. The inner filter medium and the outer side filter medium are connected each other.
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