Uncontaminated purge solvent recovery system

Details Uncontaminated purge solvent recovery system Uncontaminated purge solvent recovery system

1981-11-30

1982-09-21

Hoffman, James R.

Coating processes

Combined

427421, 427445, B05D 714, B05D 102

Patent

active

043507204

ABSTRACT:
A recovery system for solvent used to clean coating material from a multiple-color coating material dispensing system which undergoes frequent color changes includes a vacuum source over the recovered solvent in a recovery tank. The system is switched during the color change cycle from a mode in which solvent is dispensed to clean a pre-change color from a dispensing device to a mode in which the vacuum withdraws solvent remaining in a solvent delivery line to the dispensing device into the recovery tank. Solvent usage, disposal of discarded solvent, and other environmental considerations are salutarily affected.

REFERENCES:
patent: 3348774 (1967-10-01), Wiggins
patent: 3605683 (1971-09-01), Wiggins
patent: 4311724 (1982-01-01), Scharfenberger

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