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US 2021/0229003 A1Published application
Underdrain assembly and method of manufacturing same
AssigneeMeurer Research, Inc.
InventorCharles Lonnie Meurer
Life of this patent
Estimating the term…
Abstract
An underdrain apparatus and a method for manufacturing such apparatus are provided. The underdrain apparatus can be extruded in long sections as a unitary part. The underdrain apparatus may be extruded in various sizes, shapes, and materials. Further, the underdrain apparatus may include a passageway for transporting water to and from the filter media and/or air to the filter media. In some embodiments, apertures are formed in the underdrain apparatus during an extrusion process to provide a path between the passageway and the filter media.
Claims20
An underdrain apparatus comprising:
- a trapezoidal cover member that includes:
- a first generally planar surface;
- a second generally planar surface adjacent at least a first side of the first generally planar surface;
- a third generally planar surface adjacent to at least a second side of the first generally planar surface, wherein a plurality of orifices extends through at least said second generally planar surface and said third generally planar surface;
- wherein an angle formed between the first generally planar surface and the second generally planar surface, and an angle formed between the first generally planar surface and the third generally planar surface are obtuse angles;
- and a water transport member connected to said second generally planar surface and to said third generally planar surface, and that is not connected to said first generally planar surface, said water transport member having apertures through a lower-most half of the water transport member, said second and third generally planar surfaces each having an edge that rests on a floor when the underdrain apparatus is installed;
- and wherein the underdrain apparatus extends substantially a length of a filter media supported thereby and has a longitudinal length of at least 10 feet, and wherein the apertures in the water transport member are located along a longitudinal direction of the water transport member.
4 more elements
An underdrain apparatus comprising:
- a trapezoidal cover member that includes:
- a first generally planar surface;
- a second generally planar surface adjacent at least a first side of the first generally planar surface;
- a third generally planar surface adjacent to at least a second side of the first generally planar surface, wherein a plurality of orifices extends through at least one of said second and third generally planar surfaces;
- wherein an angle formed between the first generally planar surface and the second generally planar surface, and an angle formed between the first generally planar surface and the third generally planar surface are obtuse angles;
- and a water transport member that has apertures through a lower-most half of the water transport member;
- and wherein the underdrain apparatus has a longitudinal length of at least 10 feet, wherein the trapezoidal cover member includes a flange.
4 more elements
An underdrain apparatus comprising:
- a trapezoidal cover member that includes:
- a first generally planar surface;
- a second generally planar surface adjacent at least a first side of the first generally planar surface;
- a third generally planar surface adjacent to at least a second side of the first generally planar surface, wherein a plurality of orifices extends through each one of said first, second and third generally planar surfaces;
- wherein an angle formed between the first generally planar surface and the second generally planar surface, and an angle formed between the first generally planar surface and the third generally planar surface are obtuse angles;
- and a water transport member that has apertures through a lower-most half, said second and third generally planar surfaces each having an edge that rests on a floor when the underdrain apparatus is installed;
- and wherein the underdrain apparatus has a longitudinal length of at least 10 feet, wherein said second generally planar surface has air orifices and said first generally planar surface does not have air orifices, wherein the underdrain apparatus has a water transport member and two intermediary passageways that interconnect the water transport member with the filter media, wherein the trapezoidal cover member includes a flange;
- wherein the underdrain apparatus comprises an air inlet for injecting pressurized air into the underdrain apparatus;
- wherein the underdrain apparatus comprises a water inlet for injecting water into the underdrain apparatus during a backwashing procedure;
- wherein the underdrain apparatus is placed on a floor of a filter basin and adjacent underdrain apparatus are interconnected to define an underdrain assembly that covers the filter basin floor and wherein said filter media is positioned on top of the underdrain apparatus to define a filter media, said filter media bed comprised of successive layers of gravel, sand, anthracite, or other granular filter media.
7 more elements
Dependencies are inferred from the claim text.