Metering pump system

Details Metering pump system Metering pump system

1974-07-12

1976-07-13

Myhre, Charles J.

Pumps

Expansible chamber type

Mechanically actuated distributor

92 133, 417519, F04B 1700, F04B 1500, F04B 2306

Patent

active

039690466

ABSTRACT:
A system for metering and pumping a plurality of fluids is diclosed. The system includes a pumping stage which has a plurality of piston pumps extending from a rigid support to a rack hinged at one end. A valve stage is provided having a valve body with an internal rotatable valve spool. The valve body has several sets of inlet, outlet and common ports communicating with the valve spool, the common ports being connected to the respective pumps. One set of ports is provided for such fluid to be metered and pumped. For each set of ports, the valve spool has a flat portion and a circumferential indentation integral to the flat portion. Alignment of a flat portion of the valve spool with an inlet port of the valve body allows fluid to pass from a supply to the respective pump, and alignment of the flat portion with an outlet port allows the fluid to pass from the pump and out through the outlet port. Means are provided for rotating the valve spool so that the respective fluids are cyclically provided to the respective metering pumps and then allowed to be expelled therefrom.

REFERENCES:
patent: 2807213 (1957-09-01), Rosen
patent: 2954737 (1960-10-01), Hoover
patent: 3038311 (1962-06-01), Lindsley et al.
patent: 3196802 (1965-07-01), Matheny
patent: 3289889 (1966-12-01), Schwieger
patent: 3499387 (1970-03-01), Zippel
patent: 3612732 (1971-10-01), Stephans

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