DEVICE OF BRANCHING DISTRIBUTING SYSTEM OF HIGH- RATE TRICKING FILTER Russian patent published in 2001 - IPC

FIELD: water-supply; purification of natural water and sewage. SUBSTANCE: device has perforated tube, filtering member installed coaxially to external surface of perforated tube in a spaced relation to the latter. Filtering member is made in the form of dross trap; cross-sectional area of gap between internal surface of trap and external one of perforated tube is found from following equation: 0,25S_g≅ S_b≅2,0S_g, where S_b is total area of perforated tube holes, S_g is cross-sectional area of gap between internal surface of dross trap and external one of perforated tube. EFFECT: reduced head loss. 6 cl, 2 dwg