초록 ▼

Apparatus for removing suspended solids from electroplating solutions and the like includes a housed cluster of slotted plastic tubes about which are fitted fabric filter sleeves and through which the solution is normally forced into the tubes continuously in the course of filtering. The process is

Apparatus for removing suspended solids from electroplating solutions and the like includes a housed cluster of slotted plastic tubes about which are fitted fabric filter sleeves and through which the solution is normally forced into the tubes continuously in the course of filtering. The process is interrupted relatively briefly when likely to be impaired by solids build-up, and flushing with water at a common utility-source pressure is then uniquely valved to take place in the reversed direction sequentially through the several sleeves by way of relatively slender sparger pipes each mated within a companion one of the slotted tubes and proportioned to spray a multiplicity of fine high-velocity streams through the slots and forcefully directly against the surrounding filter sleeving, to dislodge particulate material for drainage.

대표청구항 ▼

Filtration apparatus which comprises, in combination, a liquid-tight substantially cylindrical tank, partitioning means within said tank dividing it into two axially-spaced chambers, said partitioning means including a cluster of substantially rigid laterally-spaced tubular members extending into on

Filtration apparatus which comprises, in combination, a liquid-tight substantially cylindrical tank, partitioning means within said tank dividing it into two axially-spaced chambers, said partitioning means including a cluster of substantially rigid laterally-spaced tubular members extending into one of the chambers and having relatively large openings through the side walls thereof, each of said tubular members supporting a sleeve of flexible porous filter material in a surrounding closely-mated relationship therewith wherein said porous filter material extends across and closes said openings, means for introducing into said one of said chambers from outside said tank a liquid from which suspended contaminants are to be filtered, means for releasing from said tanks filtered liquid which accumulates in the other of said chambers, a plurality of sparger pipes extending one each coaxially into said tubular members, each having an inlet and a plurality of minute spray-forming orifices therethrough distributed along the portions thereof within said members and oriented to direct jets of liquid through said openings and directly onto said filter material which extends across said openings, means for interrupting the introduction of liquid into said one of said chambers and the release of filtered liquid from the other of said chambers, means for introducing pressurized flushing liquid from a supply main outside said tank into an inlet of each of said sparger pipes, and means for draining flushing liquid and filtered contaminants entrained therein from said one of said chambers, whereby contaminants filtered by the sleeves of filter material may be dislodged therefrom and drained when said sparger pipes spray said jets of flushing liquid against said filter material through said openings through side walls of said tubular members while preventing said contaminants from entering said other of said chambers.