Patent ID: 8271139
Filing Date: 2012-09-18
Classification: B01F,G05D

Abstract:
1. An accurate blending system for blending a feed liquid and first and second adjusting, liquids comprising: a) a first feed means adapted to communicate with a supply of feed liquid; b) a second feed means adapted to communicate with a supply of the first adjusting liquid; c) a third feed means adapted to communicate with a supply of the second adjusting liquid; d) a recirculation loop mixing device in communication with the first, second and third feed means; e) a first sensor in communication with the recirculation loop mixing device; f) a second sensor in communication with the recirculation loop mixing device; g) a controller in communication with the first sensor so that a first characteristic of a mixed solution in the recirculation loop mixing device consisting of a mixture of the feed liquid, the first adjusting liquid and the second adjusting liquid can be detected, said controller also in communication with the second feed means so that delivery of first adjusting liquid to the recirculation loop mixing device can be controlled based upon the detected first characteristic; h) said controller also in communication with the second sensor so that a second characteristic of the mixed solution in the recirculation loop mixing device can be detected, said controller also in communication with the third feed means so that delivery of second adjusting liquid to the recirculation loop mixing device can be controlled based upon the detected second characteristic; and i) said first and second sensors simultaneously detecting the first and second characteristics of the mixed solution so that delivery of the first and second adjusting liquids may occur simultaneously based on the detected first and second characteristics of the mixed solution.