DIAPHRAGM PUMP UTILIZING DUCKBILL VALVES, MULTI-DIRECTIONAL PORTS AND FLEXIBLE ELECTRICAL CONNECTIVITY Russian patent published in 2020 - IPC F04B43/02 

FIELD: pumps.

SUBSTANCE: invention relates to pumps for supply of viscous fluid and disperse medium including solid and suspended particles. Two-diaphragm pump comprises upper/lower diaphragm pump assemblies (U/LDPAs) providing fluid transfer and a collector assembly arranged there between. Collector assembly includes a housing having an inlet with double inlet holes and an inlet chamber for receiving fluid from the source. Channel for intake check valve assembly includes inlet duckbill check valve assembly (DCVA) located in said channel to receive fluid from dual inlet openings. U/LDPAs holes accommodating said U/LDPA serve to receive fluid from the inlet DCVA through the first upper/lower manifold channels and provide fluid flow from the U/LDPAs via the second upper/lower collector channels. Channel for outlet check valve assembly accommodating outlet DCVA serves to receive fluid from U/LDPAs. Outlet has double outlet openings and outlet chamber for receiving fluid from U/LDPAs and provides flow of fluid medium from pump to outlet reservoir.

EFFECT: improved operational characteristics.

7 cl, 9 dwg