Working principle and advantages of automatic dosing device

 

PAM dosing device is a complete set of equipment integrating dosing, mixing, liquid transportation and automatic control. It is widely used in raw water, boiler feed water, oilfield surface gathering and transportation dehydration treatment systems of power plants, various PAM dosing devices and wastewater treatment systems in petrochemical industry. Such as adding coagulant, phosphate, ammonia, lime water, corrosion inhibitor, scale inhibitor, bactericidal and algal killing agent, etc.

Working structure principle of dosing device

PAM dosing device is mainly composed of solution tank, agitator, metering pump, level gauge, electric control cabinet, pipeline, valve, safety valve, back pressure valve, check valve, pulsation damper, pressure gauge, y-type filter, etc.

PAM dosing device is configured in the mixing box according to the required reagent concentration, and is put into the solution tank after being stirred evenly by the agitator, and the prepared solution is delivered to the dosing point or the designated system by the metering pump. The complete set of PAM dosing device is characterized by compact structure, safety and simplicity, simple operation, etc. PAM dosing device can also carry out targeted design, configure necessary components and realize automatic remote control and other functions according to different process requirements of users.

Precautions for selection of dosing device

1. When selecting PAM dosing device, the user should first determine the specification (including metering pump parameters, solution tank volume and other conditions) according to the amount of solution to be added to the system, and then determine the dosing method (generally, "one for use and one for standby") according to the dosing situation.

2. Select the materials (stainless steel, carbon steel, non-metallic materials) of the components of PAM dosing device, the model of metering pump (diaphragm pump, plunger pump) or provide the parameters of the added agent (name, concentration, temperature, density, viscosity, corrosivity, etc.) to our company as required.

Main features of dosing device

a. Centralized design, small footprint, simple structure and stable performance;

b. Accurate measurement, convenient adjustment, good economy, and easy installation and maintenance;

c. The pump is installed in suction type, which is not easy to block, with long trouble free operation time and low operation cost;

d. Good corrosion resistance and long service life;

e. Material of solution tank: pe, glass fiber reinforced plastic, carbon steel rubber lining, 304 stainless steel, 316 stainless steel;

f. Mixer material; 304 stainless steel, 316 stainless steel;

g. Materials of overflow part of metering pump: pp, pvc, pvde, ss316.

Advantages of automatic dosing device

1. Highly integrated integrated equipment.

2. High degree of automation, the whole system can be intelligently controlled by PLC.

3. The equipment is small in size, simple in operation and convenient in installation. The on-site installation is only the connection of water source and power supply.

4. It works safely and reliably. In case of equipment failure, the system will automatically shut down and send out an alarm signal.

5. Stable performance, fully automatic control can automatically adjust the dosage of dry powder according to the change of water volume.

6. It has good corrosion resistance and is made of engineering plastics and stainless steel in contact with the medium.

7. It is not only suitable for powder, particle, fiber and other materials, but also suitable for the configuration and feeding of liquid materials.

 

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