Technical description of fully automatic integrated dosing equipment: 　　

1 , the automatic frequency characteristic control means controlling automatic dosing device with the introduction of high-tech products - the AC drive advanced AC speed control system configuration, automatic control of the dosage, the biggest advantage of the system is reliable, long life , Good starting characteristics and low energy consumption. The device can also be used as a rotation speed control system of AC motors such as water pumps, oil pumps, and fans to realize the pressure and flow control of liquid and vapor in the liquid pipeline. 　　

2 , the automatic control arrangement automatically controlled by the automatic control apparatus main cabinet, recorder, AC motor, dosing pumps and other components. There are frequency converters, regulators, detectors, etc. in the automatic control cabinet, as shown in the table below. The choice of the detector is determined by the user's type of dosing, for example: adding ammonia, the detector can be a conductivity meter or a pH meter, for adding phosphate, a fast phosphate analyzer can be used, and a pH meter can be used for the neutralization tank, and phosphate can be coordinated. For treatment, an R meter is used, for coagulation, a streaming current tester is used, and for chlorination, a residual chlorine meter is required. 　　

3 , automatic control means principle dosing pump driving the motor in the AC drive, the agent is injected into the liquid concentration detector is detected, the detector input electrical signal proportional to the concentration regulator compared with the settings to , The deviation signal is obtained, and the regulator performs proportional and integral calculations on the deviation signal according to the process requirements, and the result signal of the calculation is sent to the frequency converter. The frequency converter changes the frequency of the motor's working power supply according to the adjustment signal output by the regulator, so that the motor speed changes. Change the concentration of the liquid medicine in the injected liquid to control the concentration of the medicine within the maximum range. 　

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