Patent ID: 7648630

Claim:
An underwater filtration operator for floating in a water body and filtering water in the water body, comprising: a housing; a plurality of filtration units provided in said housing; at least one filter medium provided in each of said filtration units, respectively, for filtering water from the water body; a pump housing provided in said housing for receiving the water from said filtration units, respectively; a plurality of raw water chambers disposed between said filtration units and said housing, said raw water chambers provided in water communication with said water body, said filtration units and said pump housing; a plurality of filtered water-receiving pipes provided in said pump housing, said filtered water-receiving pipes provided in water communication with said pump housing and said filtration units, respectively, for backwashing said filter medium; and a water diverter having a pivoting diverter plate provided on each of said filtered water-receiving pipes for diverting filtered water from said pump housing and said filtered water-receiving pipes to the filter medium, and a water pump provided in said pump housing for pumping the water from the water body into said raw water chambers, through said filtration units and said filter medium and into said pump housing and selectively from said pump housing, through said filtered water-receiving pipes and said water diverter, responsive to said pivoting of said pivoting diverter plate into a backwash configuration.