Automatic rotary sample injection valve

Details Automatic rotary sample injection valve Automatic rotary sample injection valve

1974-10-04

1976-04-06

Swisher, S. Clement

Measuring and testing

Measuring vessel

G01N 110

Patent

active

039481042

ABSTRACT:
A sampling valve includes upper and lower flat-faced body sections that are mounted facing one another for rotation about a generally centrally disposed shaft with a thin seal member interposed between the sections. A reciprocative device selectively rotates the upper body section relative to the lower section through a pre-selected angle about the shaft. A passage is formed from the lower body section to the upper section so that liquid continuously flows through the valve. At one portion of the valve, the passage is in communication with a bore of a sample-taking piston assembly which is arranged on the upper body section. The piston is driven upward to draw a liquid sample from the flowing liquid in the passage and then the upper body section is rotated and the sampling piston is driven downward to eject the sample into a pyrolysis furnace or the like.

REFERENCES:
patent: 3071005 (1963-01-01), Skidmore
patent: 3824859 (1974-07-01), Harris et al.
patent: 3864978 (1975-02-01), Stephens

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