HIGH-PRESSURE PISTON PUMP Russian patent published in 2013 - IPC F04B9/08 F04B43/06 

FIELD: engines and pumps.

SUBSTANCE: pump includes a housing with a central partition and pistons, suction and discharge valves, diaphragms and a compressed air distribution device. Pistons and diaphragms, which are assembled in pairs into diaphragm units, are fixed on a common stock and closed on both sides with cover plates with compressed air supply channels to the air cavities formed with them from the compressed air distributing device that is installed in the same housing. Inner cover plates form with the housing the drain cavities, which are connected to each other with a drain channel.

EFFECT: large suction depth at maintaining high reliability and efficiency.

3 cl, 3 dwg