Dissolving medicine metering device for water treatment engineering

 

The flocculant preparation system is a complete set of equipment that integrates dosing, stirring, liquid conveying and automatic control. It is used in the circulating water system that needs to add corrosion inhibitors, scale inhibitors and bactericides to accurately dose water quality treatment agents. Add and measure. In the process of water supply and drainage treatment, various chemicals are often added for scale inhibition, sterilization and algae killing, coagulation and flocculation to achieve the purpose of purifying water. These drugs have solid particles and liquids, and they must be dissolved, diluted and dosed according to the proportion to achieve the best effect during the dosing process. Therefore, the dissolved drug dosing device is one of the commonly used equipment in water treatment projects.

Structure and composition

The fully automatic flocculant preparation system is composed of metering pump, medicine bucket, mixer, bracket, electric control cabinet, etc. It is developed by our company on the basis of introducing foreign microcomputer-type metering pump (Milton Rowe, USA) and combining the actual situation of domestic water system. state-of-the-art water treatment system.

working principle

Driven by the AC frequency converter, the dosing pump motor injects the medicine into the liquid, and the concentration of the medicine is detected by the detector. The controller performs proportional and integral operations on the deviation signal according to the process requirements, and the operation result signal is sent to the inverter. The inverter changes the frequency of the working power supply of the motor according to the adjustment signal output by the regulator, so that the speed of the motor changes, and the liquid medicine injected into the liquid changes. concentration, so that the concentration of the drug can be controlled at the best.

 

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