HOUSEHOLD FILTER-EXTENSION Russian patent published in 1995 - IPC

FIELD: water pipeline drinking water purification. SUBSTANCE: using gasket 5 filter-extension is mounted hermetically on diverting pipe of tap. Polluted with solid particles or ferrous hydroxides water is fed to filtering member 8, is filtering through layers of polymer fibres, laid layer by layer with increasing from center to periphery density of piling and with decrease of fibres diameter from center to periphery. In the case, bigger particles are delayed in inner layers and smaller particle are delayed in outer layers. Purified water is collected in cavity formed by outer cylindrical surface 8 and inner cylindrical surface of body 1. Then purified water by canals, formed be radial rims 7, lower lid 6, bottom of body 1 through carrying off branch pipe 2 is going to consumer. EFFECT: household filter-extension is used for drinking water purification. 1 dwg