Foam-generating apparatus
AssigneeCCA Inc.
InventorLeslie P. Williams
Life of this patent
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Abstract
The invention involves a mixing apparatus capable of mixing two or more chemicals using a motive liquid. An ejector draws in a first chemical which is directed to the input of an eductor. A second chemical is connected directly to the eductor. The motive liquid provides the motive force for both the ejector and the eductor. By reason of the feeding of the first chemical to the eductor from the separate ejector rather than directly into the eductor, the ratio of the first chemical to the second chemical fed into the eductor is more accurately controlled than if both chemicals were directly fed to the eductor. The chemicals are mixed in the eductor and are discharged as a foam preferably through a foam nozzle.
Claims8
An apparatus for mixing chemicals comprising:
- a motive liquid inlet;
- a first chemical inlet;
- a second chemical inlet;
- a mixed chemicals outlet;
- an eductor means having a first chemical inlet port and a second chemical inlet port;
- said eductor means having an inlet in flow communication with said motive liquid inlet for flowing liquid under pressure through said eductor means to create a reduced pressure therein, and also having an outlet in flow communication with said mixed chemicals outlet;
- conduit means connecting said second chemical inlet to said second chemical inlet port of said eductor means;
- ejector means disposed in fluid communication with said motive liquid inlet and also with said first chemical inlet and said first chemical inlet port of said eductor means for causing a flow of a chemical from said first chemical inlet through the ejector means to said first chemical inlet port of said eductor means substantially independently of the flow rate of a chemical flowing into said eductor means from said second chemical inlet to facilitate control of the ratio of the chemicals entering said eductor means;
- and
- said eductor means inducing flow of the chemical directly from said second chemical inlet into said second chemical inlet port and also the chemical from said ejector means for mixing the chemicals in said eductor means and discharging the mixed chemicals therefrom under pressure.
Dependencies are inferred from the claim text.