초록 ▼

A stream of contaminated liquid flows into a vessel, and through a filter media, while clean liquid exits the vessel leaving the contaminants deposited on the filter media. The deposited contaminants are scrubbed from the media by circulating the media along a toroidal flow path within the vessel un

A stream of contaminated liquid flows into a vessel, and through a filter media, while clean liquid exits the vessel leaving the contaminants deposited on the filter media. The deposited contaminants are scrubbed from the media by circulating the media along a toroidal flow path within the vessel until the contaminants have been transferred from the media into the liquid. The scrubbing action is achieved by a punp suction which is spaced from a pump discharge. The pump discharges through a perforated nozzle. The nozzle extends through a housing. An annulus is formed between the nozzle and the housing. Dirty scrub water flows from the pump, through the nozzle perforations, into the annulus, and away from the vessel, while at the same time the toroidal flow path is maintained.

대표청구항 ▼

A filter system for removing contaminants from a liquid flowing therethrough comprising a vessel having an inlet for providing a contaminated liquid flow into one end thereof and a clean liquid outlet through which filtered liquid can exit said vessel; a first screen supported adjacent said clean li

A filter system for removing contaminants from a liquid flowing therethrough comprising a vessel having an inlet for providing a contaminated liquid flow into one end thereof and a clean liquid outlet through which filtered liquid can exit said vessel; a first screen supported adjacent said clean liquid outlet and within said vessel; a quantity of particulate filter media in said vessel received against said screen for normal filter operation wherein contaminants are captured by said particulate filter media and filtered as liquid flows through said screen and then exits through said clean liquid outlet; and, an intermittently operable scrubber apparatus connected to the interior of said vessel such that said particulate filter media can be fluidized and thereby cleaned while said particulate filter media remains predominately within said vessel, said scrubber apparatus including: a pump means having a suction inlet in said vessel for receiving flow of liquid from the interior of said vessel and a pump outlet arranged within said vessel directed toward said screen, said pump outlet being aligned in a manner such that said particulate filter media and any liquid contained upstream of the screen assumes a flow path which scrubs the particulate filter media and translocates any removed contaminants from the particulate filter media into the liquid; a scrub water outlet formed in said vessel; a length of said pump outlet being perforate and thereby forming a scrub water screen through which liquid and removed contaminants can flow while the filter media is substantially precluded from flowing therethrough; a scrub water discharge chamber formed contiguous respective to said scrub water screen and connected to discharge contaminants and liquid from said discharge chamber through said scrub water outlet; whereby, liquid containing contaminants scrubbed from said particulate filter media is directed through said pump, through said scrub water screen, into said discharge chamber, and from said vessel by means of said scrub water outlet.