Proportioning fluids
First Claim
1. A method of proportioning and mixing liquids which comprises delivering a predetermined volume of first liquid to a first chamber to fill that chamber, making a connection from said first chamber to a second and larger chamber and passing said volume of first liquid from said first chamber to said second chamber through said connection while preventing the admission of further first liquid to said first chamber and connecting a supply of liquid to be mixed with said first liquid to said connection between said first and second chambers to cause said liquid to be mixed to be admitted to said connection and to said second chamber in an amount equal to the difference in volumes of said chambers.
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Accused Products
Abstract
Apparatus for accurately proportioning and mixing fluids comprising a double acting piston/cylinder unit of which the cylinder is divided into two chambers by the piston and the volume of the cylinder swept by the piston at one end of the piston is lesser than that at the other end. An inlet connection for a first fluid is made to one chamber, a conduit connects the two chambers and includes a connection to a source of the second fluid. Valve means are associated with the conduits and are effective to cause a charge of first fluid to be delivered to said one chamber and thereafter to be transferred to the other chamber drawing fluid from said source of second fluid to make up for the difference in the volumes of the chambers. Said valve means then cooperate to cause the mixed fluids to be discharged from the other chamber as said one chamber is again charged with said first fluid. In a variant of the invention the piston/cylinder unit is replaced by a receptacle within which is disposed a diaphragm the diaphragm serving to divide the receptacle into two chambers. In other variants means are provided for varying the ratio of first to second fluid in the mixture and in still other variants the second fluid is made up of components of two or more fluids the ratios of those components being adjustable.
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Citations
19 Claims
- 1. A method of proportioning and mixing liquids which comprises delivering a predetermined volume of first liquid to a first chamber to fill that chamber, making a connection from said first chamber to a second and larger chamber and passing said volume of first liquid from said first chamber to said second chamber through said connection while preventing the admission of further first liquid to said first chamber and connecting a supply of liquid to be mixed with said first liquid to said connection between said first and second chambers to cause said liquid to be mixed to be admitted to said connection and to said second chamber in an amount equal to the difference in volumes of said chambers.
- 14. Liquid proportioning and mixing apparatus comprising a liquid filled system including a first receiving chamber receiving a predetermined volume of a primary liquid, a second receiving chamber, means connecting said chambers, means transporting liquid from said first chamber to said second chamber through said connecting means, at least two liquid inlet means for secondary liquid communicating with said connecting means and means rendering the volume of said second chamber greater than said predetermined volume of primary liquid, whereby liquid is delivered through at least one of said inlet means to said connecting means to fill, with said primary liquid, said second chamber.
- 16. Liquid proportioning and mixing apparatus comprising a source of a primary liquid and filled system including a first receiving chamber receiving a predetermined volume of a primary liquid from said source, a second receiving chamber, means connecting said chambers, means transporting liquid from said first chamber to said second chamber through said connecting means, a source of secondary liquid, connecting means extending between said secondary source and said means connecting said chambers and means rendering the volume of said second chamber greater than said predetermined volume of primary liquid, whereby secondary liquid is delivered through said connecting means and said means connecting said chambers, to fill, with said primary liquid, said second chamber, said source of secondary liquid comprising at least two supplies of different liquids and means controlling the quantity of liquid admitted from one of said supplies.
Specification