Strainer system for water treatment tanks

摘要

Water is softened and/or purified in passing through a bed of granular treating material 12, e.g. zeolite, contained in a closed casing 4, strainer heads 13 connected by flexible conduits 35 to a manifold 14 being inserted and removed through openings in the casing base 5 from outside the casing. A bayonet-type coupling connects each strainer head to the bottom head. To regenerate the filter-type bed, brine is delivered from a control box 9 through system 18, passing out of the casing through the strainers 13, and a manifold 14 leading through the control box 9 to waste at 22. The brine is then washed from the bed by introducing water through pipe 10. Backwashing may also take place.