MULTIPLE-STAGE AIRLIFT SYSTEM

摘要

PURPOSE: A multi-stage airlifting device is provided to maintain the stable water permeability and to effectively pump to a high water level by constituting a lift unit comprising an airlift device in multi-state. CONSTITUTION: A multi-stage airlifting device comprises a plurality of n-order lift units(10), a plurality of n-order water storage units(20), and a control unit(40). The n-order lift unit pump water by using air supplied from outside and increase a level as moving into next stages. The n-order water storage unit stores water pumped by the n-order lift unit and comprises one or more n-order lift units inside and increase the level as moving into next stages. The control unit supplies the air to the n-order lift units.