Flow regulation device for waste waters

Claim 1

A flow regulation device for receiving mixed water containing both clean rain water and polluted waste water and for separating said clean rain water from said waste water, said flow regulating device comprising: a collection chamber having a first, inlet opening for receiving said mixed water, a second, outlet opening for discharging a portion of said mixed water which has a relatively high content of waste, and a third, outlet opening for discharging a portion of said mixed water which is mainly clean rain water; a reduction adapter including a tapered cylinder having a smaller and a larger diameter end, said larger diameter end corresponding to the diameter of a supply duct which supplies said mixed water to said first inlet opening, said reduction adapter also including an overflow member connected to the upper portion of said tapered cylinder for permitting relatively clean excess water passing into said reduction adapter to flow through said overflow member and into said collection chamber; and a waste-weir including a single piece tubular member having an entrance end and an exit end, said entrance end being connected to said smaller diameter end of said tapered cylinder, said exit end being coupled to said second opening in said collection chamber, said tubular member including a first baffled zone for imposing an S-shaped path onto the flow of said mixed water as it moves downstream from said entrance end to said exit end of said tubular member and a second baffled zone for separating said portion of said mixed water which has a relatively high content of waste from surplus mixed water entering said tubular member and having a high content of clean rain water, an opening formed in the top of said tubular member through which said surplus mixed water having a high content of clean rain water can exit from said tubular member into said collection chamber; and means for guiding said relatively clean water which has entered said collection chamber to said third outlet opening in said collection chamber.