AIRLIFT PLANT FOR TESTING AND DEVELOPMENT OF UNDERWATER FORMATIONS Russian patent published in 1995 - IPC

FIELD: mining. SUBSTANCE: airlift plant for testing and development of underwater formations has pipe strings including air supply pipe string with disperser, pressure pipe string and pulp lifting pipe string. Secured rigidly to pulp lifting pipe string lower end is converging tube with its conical part, and hollow spring is connected with its large base to inner surface of converging tube conical part. Converging tube has through channel, and it accommodates actuating member made in form of pressure chamber, and cruising nozzle and its body with pulp-receiving channels and pulp delivery branch pipe with conical hollow spring installed above it. Spring is fastened with its base to inner surface of converging tube conical part, and, with its lower end, it is secured to branch pipe and is connected by means of pipe with crushing nozzle, and through channel to pressure pipe string. Body is installed for closing converging tube lower end and accommodation of upper end of pulp delivery branch pipe in inner hollow of pulp-lifting pipe string. EFFECT: higher efficiency. 2 dwg