Measuring and testing – Measuring vessel
Patent
1979-01-26
1980-04-22
Swisher, S. Clement
Measuring and testing
Measuring vessel
G01N 114
Patent
active
041988620
ABSTRACT:
A sampling pump having a helix rotor is immersed below the surface of the liquid composition being prepared within a large tank in which the contents are mixed, agitated and heated or cooled by various means. A drive motor positioned above the tank imparts rotation to the helix pump rotor through an elongated coupling shaft. A stream of the liquid is lifted vertically upward through an elongated extension housing inside the vessel and then through a conduit external to the vessel and ultimately returns the liquid stream to the tank. Analytical instrumentation may be provided at intervals along the external conduit for performing desired chemical and physical analyses. A three-way valve in the conduit is provided to selectively dispense samples for analysis elsewhere, without interrupting the stream flow and thus insuring the representative character of the sample. A stuffing box assembly is employed for completely isolating the drive and/or the motor from the liquid contents. The sample pump and external conduit are positioned so that when the tank is emptied the sample pump and the external conduit are drained of liquid.
REFERENCES:
patent: 2934959 (1960-05-01), Johnson
patent: 3188565 (1965-06-01), Kolb
Pilot Unit Products, Inc.
Swisher S. Clement
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