Electromagnetic metering pump

Details Electromagnetic metering pump Electromagnetic metering pump

1975-04-03

1976-10-05

Adee, John

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

210198C, 210349, B01D 1508

Patent

active

039843157

ABSTRACT:
Apparatus for pumping the eluent liquid through a chromatograph column is provided in the form of an electromagnetic metering pump, the outlet of which is provided with a pulsation damping device in the form of a sealed chamber having a resiliently loaded elastic wall. Considerable control of operation is obtainable by adjustment of the resilient loading and the operation of the pump (speed and stroke length). The chamber may be fitted with a pressure gauge having a closable outlet to atmosphere for purging purposes. Effective chromatographic separation of mixtures is obtainable at low equipment costs.

REFERENCES:
patent: 3493496 (1970-02-01), Bray et al.
patent: 3537585 (1970-11-01), Waters
patent: 3855129 (1974-12-01), Abrahams

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