INVESTIGATION INTO WATER LIFTING FROM WELLS USING VACUUM (AIRLIFT) PUMP ASSEMBLY FOR FLOODING OF PASTURES

This article describes procedure of water lifting from wells using vacuum (airlift) pump assembly for flooding of pastures. A new flowchart of pump assembly is proposed with description of design, technological process, distinctive features and novelty in comparison with analogues protected by KZ patents. Theoretical studies of vacuum water lifting as well as laboratory tests of experimental and pilot samples are presented. Brief review of patent researches of airlift water lifting from wells and Brief review of patent researches of airlift water lifting from wells and appropriate pump assemblies is given. On the basis of theoretical and experimental studies, the optimum process variables are summarized: excessive air pressure generated by compressor at optimum heights of water lifting; specific weight of lifted air-water mixture; supply by pump assembly; consumed power and efficiency of pump assembly.