Patent ID: 8409436

Claim:
A rotary disc filter for filtering a liquid, comprising: (a) a rotary drum having an inlet for receiving the liquid to be filtered, the rotary drum further including an outer surface having a plurality of openings for permitting the liquid to flow from the rotary drum; (b) a drive for rotatively driving the rotary drum; (c) one or more disc shaped filter members secured on the drum and rotatable with the drum as the drum is driven; (d) each disc shaped filter member including a series of connected plastic modules and a plurality of filter segments disposed on each side of the disc shaped filter member; (e) a series of compartments disposed between the plastic modules and positioned around the drum for holding liquid to be filtered and wherein each compartment is defined in part at least by two consecutive modules and a pair of filter segments; (f) each plastic module comprising: i. a plastic base secured on the rotary drum and including an opening generally aligned with at least one of the openings in the outer surface of the rotary drum such that liquid flows from the drum, through the opening in the outer surface of the drum and through the opening in the base into at least one of the compartments; ii. the base including a plate; iii. the base including opposite ends and wherein each end of the base connects to the end of another base in end-to-end relationship; iv. a plastic support arm integral with the base and projecting outwardly from the base; v. a plurality of slots forming a part of the module for receiving and retaining portions of a plurality of the filter segments; (g) a series of fasteners for securing the bases of the modules together in end-to-end relationship around the rotary drum.