Solution

1. Core Advantages

Leak-Free Design

Adopts magnetic coupling transmission, eliminating the mechanical shaft seal to achieve a fully sealed structure. This effectively eliminates the risk of leakage for flammable, explosive, and toxic media (such as strong acids and alkalis).

The isolation sleeve is made of high-strength fluoroplastic (e.g., PTFE) or special alloy, which is corrosion-resistant and eliminates magnetic eddy current heat. The applicable temperature range is **-20℃ ~ 450℃** (varies by model).

Corrosion Resistance

Wetted parts are lined with fluoroplastics (e.g., PTFE, F46), capable of conveying corrosive media such as acids, alkalis, and oxidants at any concentration.

It can tolerate solid particles content ≤ 8% (particle size ≤ 40 mesh).

High Efficiency & Energy Saving

Neodymium-iron-boron / samarium-cobalt magnets (magnetic flux ≥ 3600 Gauss) provide stable torque transmission.

Energy consumption is reduced by **20%~30%** when operating in the high-efficiency zone. Motor power is generally **< 160 kW**.

2. Selection and Design Key Points

Process Parameter Matching

Flow / Head

- Pumps with flat H-Q curves are recommended for large flow variations.

- Steep curve pumps are suitable for large head variations.

Ensure the rated operating point falls within the high-efficiency zone.

Medium Characteristics

- Fully fluoroplastic lining is required for highly corrosive media.

- Wear-resistant coatings (e.g., silicon carbide bearings) are required for media containing particles.

Economic Considerations

Mature standard series products are preferred. For new designs, cavitation, vibration and other indicators must be verified.

Total cost should include equipment cost and operation & maintenance cost (imported brands have longer service life but cost **30%~50% higher**).

Special Requirements

Magnetic coupling material and supplier shall be specified (e.g., samarium-cobalt for temperatures > 250℃).

For multistage pumps, flow coordination is required to avoid overload or dry running of downstream pumps.

3. Operation and Maintenance Requirements

Pre-Start Inspection

Ensure the pump is fully filled with liquid (dry running is prohibited, otherwise bearings will be damaged within 5 minutes).

Electrical insulation shall meet standards, and pipeline valves shall be in correct open/close status.

Operating Limits

- Medium temperature: ≤ 100℃ (standard type) or ≤ 350℃ (high-temperature type)

- Viscosity: ＜ 100 MPa·s

Prohibited Operations

- Dry running

- Long-term operation with closed valve (easy to vaporize)

- Operation exceeding particle load limit

Troubleshooting

- Abnormal noise: Check bearing wear or magnet detachment.

- Excessive temperature: Inspect cooling system or internal friction (e.g., impeller eccentricity).

4. Advantages and Disadvantages

Advantages

- Zero leakage, high safety level

- Maintenance-free, long service life (100,000 hours)

- Compact structure, noise ＜ 65 dB

Disadvantages

- Efficiency is **5%~10% lower** than mechanical seal pumps

- Risk of isolation sleeve breakage (high-strength materials required)

- Only suitable for low-viscosity, clean media

5. Typical Applications

- Chemical industry: Conveyance of strong acids such as hydrochloric acid and sulfuric acid.

- Pharmaceutical industry: Transfer of high-purity solvents (no contamination).

- Environmental protection: Waste acid recovery systems.