WATER FILTER Russian patent published in 2010 - IPC B01D24/10 

FIELD: mechanics.

SUBSTANCE: invention relates to devices designed for water purification and may be used in water recycling systems. The filter contains a housing separated by an intermediate bottom into the contaminated water chamber filled with a crushed anthracite layer and a quartz sand layer and the filtered water chamber, nipples for delivery and discharge of water being treated, rinse water and air. The filter additionally contains a vertical tube with a water collection funnel and a conic grid, a high resistance distribution drainage system with slot caps in an amount of 20 pcs. per 1 m² of working surface. The caps are arranged on the intermediate bottom in concentric circles at a distance of 180-220 mm. The ratio of the slot cap slot width to the diametre of grain at the quartz sand fraction lower boundary is 0.55-0.65.

EFFECT: improved technical and economic performance of the filter, the filter reliability enhancement and service life extension.

2 dwg