Patent ID: 8974111
Filing Date: 2015-03-10
Classification: B01F

Abstract:
1. A method for continuous liquid stream blending wherein two or more liquids are repeatedly synchronously ratio dosed together to form a batch or blend of desired mixture ratios or proportions, the method comprising the following: providing an encoded servo driven primary stream liquid ratio dosing pump discretely and separately controllable and operable the primary stream liquid ratio dosing pump having an infeed port; providing a level controlled primary stream liquid reservoir having a bottom outfeed hydraulically connected to the infeed port of the primary stream liquid ratio dosing pump; providing one or more secondary stream liquid ratio dosing pumps, each having an encoded servo drive and an infeed port, each secondary stream dosing pump servo drive separately and discretely controllable and operable; providing a tubular hydraulic streams injector assembly hydraulically connecting the bottom outfeed to the infeed port of the primary stream ratio dosing pump, the injector assembly having liquid connections coupling an encoded secondary stream pump ratio dosing valve for each secondary stream ratio dosing pump; providing one or more level controlled secondary stream reservoirs, each having a bottom outfeed port closely connected to the infeed port of the one or more secondary stream liquid ratio dosing pump; providing a finished blended product tank having a level sensor signaling the synchronous running or stopping of all ratio dosing pumps, the finish blend product tank having sufficient capacity to receive all combined ratio doses in process when a level sensor stop signal occurs, and capable of providing a continuous outflow of ratio combined and blended liquids; providing an encoded primary stream dosing valve, mounted to the finished blended product tank and controlling the inflow of combined ratio doses from the primary stream liquid ratio dosing pump discharge into the finished blended product tank; operating the primary stream ratio dosing pump and primary stream pump ratio dosing valve simultaneously with one or more secondary ratio dosing pumps and secondary stream pump ratio dosing valves for an electronically predetermined synchronous run time to cause a liquid ratio dose from the primary stream liquid reservoir and liquid ratio doses from the secondary streams liquid reservoirs to simultaneously flow together in the streams injector assembly and then into the primary stream ratio dosing pump and to be displaced out of the primary stream ratio dosing pump and through a single inlet-single outlet liquid mixing device and then though the primary stream dosing valve and into the finished blended product tank; and defining a desired no flow off time between each successive synchronous run time.