Pumps – Expansible chamber type – Multiple cyclic inlet paths
Patent
1988-02-16
1989-04-25
Freeh, William L.
Pumps
Expansible chamber type
Multiple cyclic inlet paths
417539, F04B 2102
Patent
active
048243426
ABSTRACT:
An injector device for a plunger-type pump of the type having one or more cylinders, an intake valve for each cylinder operatively disposed between the pump's low pressure inlet port and each of its cylinders and outlet valve(s) for each cylinder operatively disposed between the cylinders and the pump's high pressure outlet port, where the intake and outlet valves are held in place by removable threaded plugs which afford access to the valves so that they can be repaired or replaced. The injector device comprises a threaded plug member adapted to replace one of the removable plugs used to hold an intake valve in place, but also includes a longitudinal bore in which is mounted a one-way check valve. The inlet side of the check valve is adapted to be coupled to a chemical supply tank. Also, a restrictor is placed between the particular intake valve held in place by the injector plug and the pump's inlet port. During a suction stroke of that one plunger, both a first fluid and the chemical from the supply tank are drawn into the one cylinder. Here, the two fluids mix before being ejected through the pump's high pressure outlet during the pressure stroke of the particular plunger with which the injector is associated.
REFERENCES:
patent: 2266125 (1941-12-01), Malsbary
patent: 3597125 (1971-08-01), Sadler
patent: 3849032 (1974-11-01), Mulvey
patent: 4087213 (1978-05-01), Hadama
patent: 4147478 (1979-03-01), Vork
Freeh William L.
Haugen Orrin M.
Hypro Corp.
Niebuhr Frederick W.
Nikolai Thomas J.
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