Filter having a media retaining plate
AssigneeUnited States Filter Corporation
InventorDarin St. Germain
Life of this patent
Estimating the term…
Abstract
The invention recites a filtration system including a block including a first wall and a second wall substantially parallel to the first wall. A top surface that is substantially perpendicular to the first wall is disposed between, and coupled to, the first and second walls to at least partially define an inner chamber. The top surface further includes an orifice defining a passageway between a block exterior and the inner chamber. A plate including a plurality of slots, each slot having a width of less than about 0.065 inches, and a slot outlet, is coupled to the top surface of the block. The slot outlets in the plate are substantially coplanar and the plate, when coupled to the block, substantially covers the orifice.
Claims20
A filtration system comprising:
- a block including a first wall, a second wall substantially parallel to the first wall, and a top surface substantially perpendicular to the first wall, the top surface coupled to and disposed between the first and second walls such that the walls and top surface at least partially define an inner chamber, the top surface including an orifice defining a passageway between a block exterior and the inner chamber;
- and
- a plate including a plurality of slots extending through the plate, each slot having a width of less than 0.065 inches, and a slot outlet, the slot outlets being coplanar, the plate being coupled to the top surface and substantially covering the orifice.
A filtration system comprising:
- a fluid inlet;
- a fluid outlet;
- a plurality of underdrain blocks coupled to one another to define an underdrain lateral;
- at least one of the plurality of underdrain blocks in fluid communication with the fluid inlet and the fluid outlet, the underdrain block having an outer wall surrounding an inner chamber, the outer wall including a first side, a second side parallel to the first side and a top surface perpendicular to the first side and formed to include an orifice defining a passageway between an exterior of the underdrain block and the inner chamber;
- and
- a metal retaining plate including a planar upper surface, a planar lower surface, and a plurality of slots extending through the plate from the upper surface to the lower surface, each slot having a width of less than 0.025 inches, the metal plate being coupled to the outer wall and substantially covering the orifice.
A method of manufacturing a filtration system including an underdrain block, a retaining plate, and a filter media, the underdrain block including an outer wall having a first side, a second side substantially parallel to the first side, and a top surface substantially perpendicular to the first and second sides and including a plurality of orifices defined within the top surface, the retaining plate having an upper surface and a lower surface, the method comprising:
- forming the retaining plate such that the upper surface and the lower surface are substantially parallel to one another;
- etching a plurality of slots into the retaining plate such that the area of the slots is at least equal to the area of the orifices, and such that the slot outlets are coplanar;
- aligning the retaining plate with the top surface of the underdrain block;
- and
- coupling the retaining plate to the underdrain block such that the retaining plate at least partially covers the plurality of orifices of the underdrain block.
Dependencies are inferred from the claim text.