Backflushing system
AssigneeClevepak Corporation
InventorAllen E. Molvar
Life of this patent
Estimating the term…
Abstract
An improved system for aerating and mixing waste water which is circulated through a plurality of passages in submerged mixing chambers from an inlet to outlet of each wherein gas is mixed with the water, preferably by forming two parallel streams. To flush debris from the mixing chambers and conduits: (1) each inlet is connected to a location higher than the inlet, and at a lower pressure; (2) circulation of water is stopped; and (3) gas is continued to be forced into the passages to create backward flow of waste water through each chamber from outlet to inlet and thence to the higher location, carrying lodged debris out of the chambers and conduits. Intermittent gas flow creates pulsations which help dislodge debris.
Claims14
A system for mixing gas with a fluid in a body of fluid comprising:
- a plurality of mixing chambers disposed in said body, each having a main passage for said fluid therethrough from an inlet to an outlet and at least one further passage opening into said main passage for supplying said gas into said main passage for mixing with said fluid;
- a line connecting each said inlet to a backflush location higher than that inlet location and at a lower pressure;
- a valve in said line having an open position and a closed position;
- a pump and means connecting said pump to each said inlet for pumping said fluid through each said main passage;
- and
- means for supplying gas to each said further passage so that said gas is forced into the associated main passage into which that further passage opens to mix with said fluid, said gas moving from that further passage through said associated main passage and said line to said backflush location to flush debris from said associated main passage when said pump is inoperative and said valve is in said open position, said valve in said closed position preventing flow through said line.
Dependencies are inferred from the claim text.