Device for regulation of a concentration for a product in a liquid
AssigneeSpecial Coating Laboratory International Archamps
InventorsJean Gehrig, Denis Gehrig
Life of this patent
Estimating the term…
Abstract
Device for the regulation of the concentration of a product in a liquid and, most specifically, of an alcohol used in the composition of a varnish contained in a varnishing vat for optical glasses or other substrates. The vat comprises an overflow tray and a sealed alcohol reservoir. The reservoir is installed higher than the overflow tray so that when level of the varnish in the overflow tray drops sufficiently low, an air bubble is created that rises to the alcohol reservoir, thus creating additional pressure in the alcohol reservoir and forcing a drop of alcohol into the overflow tray until the level of the varnish in the overflow tray recovers its normal level above the junction point between the second pipe and the overflow tray.
Claims20
A device for regulating the concentration of an alcohol (22) in a varnish (10) composition contained in a varnishing vat (1) comprising:
- an overflow tray (11) fixed to an outer side of the vat (1);
- a first pipe (13) connected to both the vat (1) and the overflow tray (11) for establishing fluid communication therebetween, the first pipe (13) including a continuously operating pump for circulating the composition of alcohol (22) and varnish (10) from the overflow tray (11) to the vat (1);
- and
- a second pipe (21) having first and second ends, the first end being connected to a wall of the overflow tray (11) and the second end being connected to a sealed alcohol reservoir (2), the second end of the second pipe being placed higher than the overflow tray (11), the first end of the second pipe (21) and the wall of the overflow tray (11) defining a junction point (19), the junction point (19) being positioned below a top edge of the vat (1);
- wherein the alcohol/varnish composition, being circulated by the pump, continuously flows over the top edge of the vat (1) and into the overflow tray (11), and when a volume of the alcohols evaporates from the alcohol/varnish composition, a level of the alcohol/varnish composition in the overflow tray (11) is lowered until at least one air bubble can enter into the first end of the second pipe, rise up into the sealed alcohol reservoir (2), and release a volume of alcohol into the overflow tray (11), thereby regulating the concentration of the alcohol in the varnish composition.
Dependencies are inferred from the claim text.