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    AN ON-LINE CONTROL AND REACTION PROCESS FOR PH ADJUSTMENT
    8.
    发明授权
    AN ON-LINE CONTROL AND REACTION PROCESS FOR PH ADJUSTMENT 有权

    公开(公告)号：EP3234725B1

    公开(公告)日：2020-02-12

    申请号：EP15870712.5

    申请日：2015-12-09

    申请人： Ecolab USA Inc.

    发明人： ZHANG, Meng ,  XU, Na ,  LI, Jun ,  ZHAO, Yulin

    IPC分类号： G05D21/02 ,  D21H21/18 ,  D21H23/06 ,  D21H17/20 ,  D21H23/08

    摘要： An on-line control and reaction process for pH adjustment and a control device for automatically adjusting pH value are provided. The process includes mixing a first enhancer and a second enhancer, optionally after diluting the first enhancer and/or the second enhancer with water, to form a mixture, setting a base pH value (δ1) and a target pH value (δ2), and adding pH adjuster into the mixture via a pH control unit and mixing to obtain a product with the target pH value. The pH control unit adjusts the adding of the pH adjuster by measuring or inputting certain parameters.

    PRESSURE COMPENSATED VENTURI DISPENSING SYSTEM
    9.
    发明公开
    PRESSURE COMPENSATED VENTURI DISPENSING SYSTEM 审中-公开

    公开(公告)号：EP3462271A1

    公开(公告)日：2019-04-03

    申请号：EP18193882.0

    申请日：2018-09-11

    申请人： Delaware Capital Formation, Inc.

    发明人： TINCHER, Terry ,  DYER, Christopher

    IPC分类号： G05D11/08 ,  G05D11/13 ,  G05D21/02 ,  D06F1/00 ,  G01N21/00 ,  B01F5/04

    摘要： Systems, methods, and software program products for dispensing chemical solutions. A controller receives a signal from a pressure sensor indicative of a pressure of a diluent. The controller determines an expected flow rate of the diluent through an eductor based at least in part on the pressure of the diluent. The controller may further determine an expected concentration of a chemical product in the solution dispensed from a discharge port of the eductor. Based on the expected flow rated and concentration of the chemical product, the controller determines a duration of a dispense stage of a dispensing operation required to dispense a predetermined dose of the chemical product. The controller then causes the diluent to flow through the eductor for the determined duration of the dispense stage. A check valve on the output of the eductor prevents dissimilar chemicals from mixing and reduces a response time of the eductor.