Liquid additive metering

Details Liquid additive metering Liquid additive metering

1990-12-05

1992-04-14

Bertsch, Richard A.

Pumps

Plural pumps with individual or relative control

Adjustment with respect to common drive

417900, F04B 1502

Patent

active

051043009

ABSTRACT:
Dosing apparatus for adding a metered quantity of liquid additive to slurry or other flowable material handled by a ram-type positive displacement main pump (10) includes a positive displacement metering pump (32) whose outlet (44) connects into a material carrying portion of the main pump e.g. its inlet (22). The metering pump is driven by a rocking lever (48) connecting it to the main pump ram (14) through adjustment means comprising a lead screw (62) along an arm (50) of the lever for selectively shifting a slide block (68) linked to the metering pump piston rod (42); the slide block being secured against movement on the lever arm once adjustment has been effected by clamping means (74).

REFERENCES:
patent: 3612732 (1971-10-01), Stephans
patent: 4189070 (1980-02-01), Macosko et al.
patent: 4411313 (1983-10-01), Johnson et al.

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