Self-cleaning filter with motor incorporated therewith

Claim 1

A self-cleaning filter which comprises: a vessel; an inlet conduit means for introducing into said vessel a fluid to be treated; a plurality of filtering element means for separating impurities from the fluid being treated, said plurality of filtering element means being disposed parallel to each other within said vessel and forming a series of radially and axially separated filtering chamber each filtering element means having a central passage forming a central passageway within said plurality of filtering element means, each filtering element means having feed orifice means for fluid communication between said inlet conduit means and said filtering chambers; a rotary obturator means positioned within said central passageway for successively closing feed orifice means to a series of filtering chambers to permit continuous removal of impurities from such series of filtering chambers when said filter is in an operational mode; outlet conduit means for removing impurities from said series of filter chambers; outlet conduit means for removing filter fluid from said filtering chambers; a control rod disposed for reciprocal and continuous movement in said vessel to actuate said rotary obturator means; a hydraulic motor means comprising a piston means disposed for reciprocal movement within a compartment of said vessel and integrally connected to said control rod, said piston means being alternately subjected to the pressure of the fluid being treated on opposite faces thereof; a distributor slide means disposed within a distribution chamber including end sub-chambers of said vessel for alternating the flow of fluid to a face of said piston means; conduit means for introducing fluid into said distribution chamber; a piston drive means for activating said distributor slide means at a terminus of a stroke of said piston means; and outlet conduit means for withdrawing filtered fluid from said vessel.