WATER WELL FILTER Russian patent published in 2003 - IPC

FIELD: building and operation of water wells. SUBSTANCE: proposed water well filter contains support skeleton with filtering coating and is provided with elastic hose arranged in form of spiral on outer side of filtering coating within the limits of L-shaped clamps provided with holes. Hose in stopped from bottom, its upper end being opened for connection with pressure source. Heads with nozzles diverging in direction of washing substance flow are found on outer surface of filtering coating on its elastic hose. Screw-like grooves are made on inner surface of heads with nozzles. Said heads are located along outer side of filtering coating in staggered order in height of filter, being pointed by outlet holes, one towards water bearing formation, and the other, towards filtering coating. Pulsators made of bimetallic plates of double-curve shape are installed in space of elastic hose within the limits of L- shaped clamps. Said pulsators, in number not less than four, are freely fitted on axle. Holes is L-shaped clamps are made wavy, diverging in direction of filtering coating. EFFECT: increased capacity of water well. 3 dwg