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

FIELD: engines and pumps.

SUBSTANCE: piston pump includes a central housing, on both sides of which pistons are installed, the end faces of which form a working cavity in it, which is connected in its central part to suction and delivery valves. Stocks of pistons are directed to different sides and provided with several diaphragms (at least two) installed on them and fixed in diaphragm units, which are closed on both sides with cover plates with compressed air supply channels to the formed air cavities, from the compressed air distributing device that is installed in the same housing. Inside cover plates form together with the central housing the drain cavities, which are connected to each other with a drain channel.

EFFECT: pump has large suction and delivery depth at maintaining its high reliability and efficiency.

4 dwg, 3 cl