Patent ID: 8616760
Filing Date: 2013-12-31
Classification: B01F,F04B,G05D

Abstract:
1. A control system for an apparatus used for blending plural materials, said apparatus having no flow control valves or dynamic mix tanks, said materials being supplied to said apparatus from a plurality of supply lines at a target flow velocity of material additions from each material at a given point in time, said control system consisting of: a position control, said position control, being structured to receive a position setpoint and convert said position setpoint to a velocity setpoint; a velocity control structured to receive said velocity setpoint and convert said velocity setpoint to a motor control setpoint; and a motor coupled to a pump, said motor having a motor control structured to receive said motor control setpoint and convert said motor control setpoint to a command signal, said command signal governing the speed of said motor to blend said plural materials in a predetermined ratio without measuring the flow rate of any of said plural materials being blended in said ratio.