ISHCHENKO'S INSTALLATION FOR WATER CLEANING Russian patent published in 1995 - IPC

FIELD: mechanical engineering. SUBSTANCE: installation has a filter with grain load 1 on a gritty layer 2 located over a distribution system 3. Central pipe 4 with a gate in the lower part and tank 14 of wash water are mounted in the filter axially to its walls. Tank 14 is equipped with stand pipe 16 whose lower part is mounted in reservoir 19 for clean water with water-overflow lip 20 and exhaust pipe 21. Water-air pipe 17 with valve 18 is fastened on the stand pipe above the upper lever of central pipe 4. EFFECT: enhanced quality of water cleaning. 1 dwg