Abstract:
A particle processing device includes a fluid flow path, a multi-filtering portion and a fluid transferring portion. A fluid having particles flows through the fluid flow path. The multi-filtering portion is installed in the fluid flow path. The multi-filtering portion includes at least two membrane structures. The membrane structures have different shaped openings for passing the fluid therethrough respectively. The membrane structures are arranged alone or together in the fluid flow path. The fluid transferring portion transfers the fluid forwardly or backwardly through the fluid flow path such that the fluid passes through the multi-filtering portion.