HYDRAULIC RAM-AIRLIFT Russian patent published in 2009 - IPC F04F7/02 

FIELD: machine building.

SUBSTANCE: invention relates to hydraulics and can be used for water lifting. Hydraulic ram-airlift comprises two water delivery pipes with impact valves lined up by rotary rocker. One pipe communicates, via inlet valve, with water lifting stage consisting of water delivery pipe, overflow cap and pressure pond. The other pipe communicates with air pressure stage consisting of air duct and pressure cap. Water delivery pipes communicate with water pond via delivery pipe and are furnished with return valves. Water delivery pipe of water lifting stage communicates additionally with the 2^nd water delivery pipe. Pressure cap communicates with overflow cap via outlet valve. Water delivery pipe passes through overflow cap. Part of the pipe located in overflow cap is furnished with compressed air holes. Water delivery pipes located between inlet and return valves feature flexible material inner inserts arranged to form a cavity between the said insert and pipe. Aforesaid cavity communicates with atmosphere via inlet valve and with pressure stage air duct via outlet valve.

EFFECT: higher efficiency.

1 dwg