Method and device for dispensing liquids
AssigneeConstruction Research & Technology GmbH
InventorKelly Hines
Life of this patent
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Abstract
Disclosed is a method and apparatus for dispensing a user-defined quantity of one or more liquids for use in a cementitious mixture. The method includes moving a liquid from a liquid supply to a manifold; moving the liquid from the manifold to a flow meter; measuring the liquid while it moves through the flow meter; moving the liquid to a cementitious mixture; repeating these steps for any additional liquids; flushing any remaining liquid from the manifold with a purgative fluid; and moving purgative fluid and flushed liquid to the cementitious mixture.
Claims19
A method of dispensing a user-defined quantity of one or more additive liquids to a cementitious mixture comprising:
- (a) moving an additive liquid to a manifold;
- (b) moving said additive liquid from said manifold to a mass flow meter;
- (c) measuring the quantity of said additive liquid while said additive liquid is moving through said flow meter;
- (d) moving said additive liquid from said flow meter to said cementitious mixture;
- (e) optionally, repeating (a)-(d) for one or more additional additive liquids;
- (f) purging at least one of said manifold and said flow meter with a purgative fluid, wherein at least a portion of said purgative fluid is moved to said cementitious mixture;
- wherein at least a portion of said additive liquid is recirculated prior to moving said additive liquid to said manifold;
- and
- wherein there is substantially no accumulation of additive liquid in the manifold or any components downstream of said manifold.
Dependencies are inferred from the claim text.