FIELD: engines and pumps.
SUBSTANCE: proposed pump is intended for compressible fluid dispensing system and comprises chamber with variable pressure to suck fluid from tank into chamber and from chamber into dispensing orifice, encased valve to regulate fluid flow between tank and chamber, inner and outer valves to regulate fluid flow between chamber and dispensing orifice. Said pump may change over from closed position into dispensing position. Inner and outer valves are arranged on regulator fixed in case. Said case houses chamber and dispensing orifice to create negative pressure when pump changes from dispensing position into closed position. Pressure difference between tank and chamber causes opening of inner valve to allow fluid flow from tank into chamber while pressure difference between dispensing orifice and chamber causes opening of outer valve to allow return suction of fluid from dispensing orifice into chamber.
EFFECT: higher reliability, simplified assembly.
12 cl, 22 dwg
