DEVICE FOR CIRCULATION TREATMENT OF WELL FOR WATER Russian patent published in 1999 - IPC

FIELD: water supply technique. SUBSTANCE: invention relates to operation of water intakes for underground water, namely to devices for restoring output capacity of wells by reagent methods. Device has string of water-lifting pipes and set of disks secured on this string. Disks are located at fixed distances from each other. Also provided are framework made in the form of perforated pipe, gravel weight, and external jacket made in the form of ellipsoid of revolution. Smaller axis of ellipsoid is aligned with geometrical axis of string of water-lifting pipes. Rotation surface is made porous and provided with spiral-like guide members which are in contact with holes of perforated pipe. Hydraulic connection between spiral-like guide members and perforated pipe is effected by means of flat horizontal flexible ring, flexible vertical pipeline connected with source of pressure, ejector. Mixing chamber of ejector is connected with flexible vertical pipeline. Ejector is connected with gravel weight through its outlet bore. Fastened under external jacket is cover made in the form of curve according to configuration of the witch of Agnesi. Application of aforesaid embodiment of device increases output capacity of wells. EFFECT: higher efficiency. 2 dwg