US 7,922,903 B2Granted

System and method for uniformly distributing a fluid through a filter bed in a filter

AssigneeRG Delaware, Inc.

InventorsR. Lee Roberts, Mark Kevin Addison

Life of this patent

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Abstract

A system and method for uniformly distributing fluids (e.g., washing and in-service) through a filter bed of a filter. The system and method of the present invention can be used with any type of filter that uses media to remove impurities from a fluid. The filter bed can include one or more layers of media. The media can be natural (e.g., sand, gravel, anthracite, etc.) or can be fabricated (e.g., plastic). The filter media can be supported by one or more layers of gravel. Alternatively, the filter media can be supported by a porous plate or other support designed to replace the gravel layers. The present invention includes a system having a distribution member configured to uniformly distribute a fluid through a filter bed of a filter. Preferably, the distribution member can be readily installed by relatively unskilled labor in both existing filters and new filters.

Claims25

Dependent claims

A system for use with a filter having a filter bed that is periodically subjected to fluids including a liquid, a gas and/or a combination of liquid and gas;

said system comprising:
(a) a distribution chamber for receiving and distributing one or more fluids, said distribution chamber including an inlet for receiving one or more fluids;
(b) a plurality of laterals operably connected to said distribution chamber for receiving one or more fluids from said distribution chamber, said plurality of laterals each being configured to direct one or more fluids to a filter bed of a filter, said plurality of laterals including a first lateral, a second lateral and a third lateral;
and,
(c) a distribution plate extending across at least a portion of said first lateral and at least a portion of said second lateral, said distribution plate being removed from said third lateral, said distribution plate being configured to provide a first flow area through which one or more fluids from said distribution chamber pass into said first lateral and a second flow area through which one or more fluids from said distribution chamber pass into said second lateral, said distribution plate being fixed relative to said distribution chamber such that said distribution plate does not move relative to said distribution chamber;
and,
(d) a third flow area through which one or more fluids from said distribution chamber pass into said third lateral, said third flow area being a different size than at least one of said first flow area and said second flow area.

4 more elements

A system for a filter having a filter bed for improving distribution of a fluid through the filter bed, said system including:

(a) a distribution member for providing an interface between at least a portion of a fluid distribution chamber and a first portion and a second portion of an underdrain chamber, said distribution member being configured to provide a first flow area through which a fluid passes from said fluid distribution chamber into said first portion of said underdrain chamber and a second flow area through which a fluid passes from said fluid distribution chamber into said second portion of said underdrain chamber, said first flow area being different from said second flow area to compensate for different piezometric heads at said first portion of said underdrain chamber and said second portion of said underdrain chamber;
(b) said distribution member including a first plate and a second plate, said first plate forming a first flow area between said fluid distribution chamber and said first portion of said underdrain chamber, said second plate forming a second flow area between said fluid distribution chamber and said second portion of said underdrain chamber, said first plate being fixed relative to said underdrain chamber such that said first plate does not move relative to said fluid distribution chamber;
and,
(c) means for varying the size of said first flow area without replacing said first plate with another plate.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 11/606,012Filed 30 Nov 2006 · continuation in part
Priority: 27 Oct 2006
Published: US 2008/0099411 A11 May 2008
Granted: 12 Apr 2011
Term ends: Not estimatedThe source records don’t support an estimate.

Classification3 codes

B01D 24/24
The filtering material being provided in an open container: downward filtration, the container having distribution or collection headers or…
B01D 24/4631
Regenerating the filtering material in the filter: counter-current flushing, e.g. by air
B01D
Separation

Family

Application11/588,210Parent of this continuation-in-part · filed 27 Oct 2006
US 2008/0099412 A1Pre-grant publication · published 1 May 2008
US 2008/0099411 A1Published application
US 7,736,506 B2Related patent
US 7,922,903 B2This patent

From the US filing history. Foreign family members aren’t listed.