1. Role of Magnetic Drive Pumps in Cooling Systems

A magnetic drive pump (Magnetic Drive Pump) is a seal-less pump that transmits power through magnetic coupling. Its advantages include high sealing performance and no leakage, making it suitable for:

• Hazardous or corrosive fluids

• High-temperature liquids

• Systems requiring cleanliness and zero leakage

In cooling systems, the main benefits of magnetic drive pumps are:

• Leak-free operation: Prevents coolant leakage that could damage equipment or the environment

• Corrosion resistance: Suitable for coolants with additives or naturally corrosive fluids

• Low maintenance: No mechanical seals, providing long-term stable operation

2. Characteristics of Large-Flow Magnetic Drive Pumps

Large-flow magnetic drive pumps usually have a flow rate ranging from tens to hundreds of cubic meters per hour. Their key characteristics include:

• High flow, low head: Ideal for circulating coolant in large systems

• Single-stage or multi-stage designs: Multi-stage increases pressure, single-stage is suitable for high flow

• Material options: Commonly stainless steel, fluoroplastic, or lined with PTFE to resist corrosion

• Motor matching: Typically equipped with high-efficiency motors for continuous operation

3. Selection Considerations for Cooling Systems

1. Flow rate and head matching

   • Calculate flow (Q) and required head (H) based on the cooling system’s thermal load

   • Incorrect sizing affects cooling efficiency and pump performance

2. Fluid temperature and chemical properties

   • Ambient temperature water or low-temperature liquids: standard stainless steel pump

   • High-temperature or corrosive fluids: fluoroplastic or special alloy pumps

3. Efficiency and energy saving

   • Choose high-efficiency pumps and motors

   • Consider variable frequency drives to adjust flow according to load, saving energy

4. Installation and maintenance

   • Install pumps close to cooling towers or heat sources

   • Ensure horizontal installation to avoid cavitation and dry running

   • Keep piping short and straight to reduce resistance

4. Typical Applications

• Electronics manufacturing: Clean coolant circulation

• Plastics and chemical industries: Corrosion-resistant cooling water systems

• Machining and metalworking: Oil or water circulation systems

• Semiconductor or photovoltaic industries: High-precision temperature control cooling