PAM (Polyacrylamide) is a commonly used high-molecular flocculant, widely used in water treatment processes to enhance the efficiency of solid-liquid separation. Due to its dry powder state being prone to caking and slow dissolution, it requires the use of dedicated equipment to achieve efficient and uniform dosage preparation. The PAM dosing machine is precisely designed as a fully automatic solution, which can significantly improve the efficacy of the agent, reduce labor costs, and minimize waste of the agent.
Core Principle Overview
The PAM dosing machine typically consists of the following key components, and the principles of each part are as follows:
Dry powder addition system: including powder storage bin, screw conveyor (variable frequency control), ensuring uniform powder transportation and avoiding bridging or blockage.
Pre-mixing and dissolution system: using a cyclone pre-mixer or multi-layer mesh mixing rods to quickly moisten the dry powder and prevent caking.
Three-chamber combined box body:
Mixing chamber
Initial dilution and stirring;
Curing chamber
Full reaction and curing (generally with a residence time of 30–60 minutes);
Storage chamber
Storing the prepared solution for immediate dosing.
Water supply and metering system
Electromagnetic flowmeter monitors the incoming water volume and controls the dry powder dosage in a linked manner, achieving proportional dosing.
Liquid dosing system
Composed of piston or screw metering pumps, pipeline valves, etc., precisely transporting the agent to the target point.
Automatic control system
PLC control cabinet integrates liquid level meters, fault alarms, remote interfaces, etc., supporting manual/automatic switching operation.
PAM Dosage Machine Parameter Table
|
Parameter Categories |
Typical Parameter Range/Description |
|
Solution Tank Volume |
1m³ (common standard configuration), can also be customized with multiple tank combinations (such as three-chamber type) |
|
Stirrer |
Material: 304/316 stainless steel; adjustable speed; noise ≤ 85 dB(A) |
|
Pump Type |
Hydraulic diaphragm pump, piston pump |
|
Pump Flow Rate |
0–100 L/h(can be selected according to requirements) |
|
Pump Pressure |
Up to 10 kg/cm² (approximately 1 MPa) |
|
Control Method |
Manual adjustment, variable frequency control, PLC automatic control (supports signal linkage for pH, ORP, conductivity, etc.) |
|
Flow-Through Components Material |
PP,PVC,PVDF,SS316 (corrosion-resistant, suitable for different chemicals) |
|
Power Requirements |
380V/50Hz (conventional industrial power supply) |
|
Installation Method |
Integrated skid-mounted unit, steel frame integration, facilitating transportation and maintenance |
Application Scenarios of PAM Dosage Machine
Power Industry
In thermal power plants and nuclear power plants, the fully automatic PAM dosing device is used to continuously add chemicals to systems such as condensate water and makeup water to control water quality and prevent equipment corrosion and scaling.
Chemical Production
In chemical production, the three-tank PAM dosing device is used to add catalysts, stabilizers, or other chemical reagents to various reactors, pipelines, and storage tanks to ensure product quality and the smoothness of the production process.
Petroleum Industry
In the process of oil extraction and refining, the fully automatic PAM dosing device is used to add various chemicals such as demulsifiers, anti-waxing agents, etc. to oil wells, oil pipelines, and storage tanks to increase recovery rate and production efficiency.
Food and Beverage Production
In food and beverage processing, the three-tank PAM dosing device is used to add preservatives, stabilizers, or other food additives to the production line to meet food safety regulations and product quality requirements.
Pharmaceutical Industry
In pharmaceutical production, the three-tank PAM dosing device is used to add various drug components or auxiliary agents to raw materials, injections, and tablets to ensure the effectiveness and safety of the drugs.
Water Treatment System
PAM dosing machines are widely used in power plant raw water, boiler water supply, oilfield surface gathering and dehydration treatment systems, various dosing systems in the petrochemical industry, and wastewater treatment systems. Such as adding coagulants, phosphates, ammonia, lime water, corrosion inhibitors, scale inhibitors, bactericidal and algicidal agents, etc.
Characteristics of PAM Dosage Machine
Fully automatic operation
Using PLC control, intelligent instruments or touch screens for operation, supporting remote monitoring and automatic start-stop, reducing manual intervention.
Precise dosage
Equipped with high-precision metering pumps (such as diaphragm pumps), electromagnetic flowmeters, etc., to ensure uniform addition of chemicals according to the set ratio, avoiding waste.
Corrosion-resistant materials
The parts in contact with the chemical solution mostly use PE engineering plastics, 304 stainless steel or carbon steel with rubber lining, suitable for strong acid and alkali environments.
Modular design
Components such as mixers, liquid level meters, conductivity meters, back-pressure valves can be selected as needed to flexibly adapt to different process flows.
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