SN Magnetic Drive Three Screw Pump

SN Magnetic Drive Three Screw Pump

The SN Magnetic Drive Three Screw Pump is a high-performance positive displacement pump that combines advanced three-screw pumping technology with magnetic drive (magnetic coupling) transmission. It is specially designed for the safe, leak-free, and stable transfer of lubricating oils, fuel oils, and other clean or slightly viscous liquids. By eliminating traditional mechanical shaft seals, the pump achieves zero-leakage operation, significantly improving safety and environmental performance.

This pump is widely used in petroleum, chemical, marine engineering, power plants, and industrial lubrication systems, especially in applications where sealed operation, high reliability, and continuous flow stability are required.

Product Features

Leak-Free Magnetic Drive Design
The magnetic coupling replaces the mechanical shaft seal, ensuring completely sealed operation and eliminating leakage risks.

Stable Three-Screw Performance
The three-screw structure provides smooth, pulse-free liquid delivery with stable pressure and high efficiency.

High Safety and Reliability
Suitable for transporting flammable, explosive, or valuable media in fully sealed conditions.

Excellent Self-Priming Capability
Strong suction performance ensures fast and stable self-priming without additional auxiliary systems.

Low Noise and Low Vibration
Non-contact magnetic transmission and precision screw design ensure quiet and smooth operation.

Reduced Maintenance Requirements
The seal-less structure minimizes wear parts and significantly reduces maintenance frequency and cost.

Compact and Efficient Structure
Integrated design allows easy installation and space-saving system layout.

Working Principle

The SN Magnetic Drive Three Screw Pump operates through a three-screw rotor system driven by a magnetic coupling. The motor rotates the external magnetic rotor, which transmits torque through a magnetic field to the internal rotor assembly connected to the screws. As the screws rotate, sealed chambers are formed and continuously move the liquid from the suction side to the discharge side, ensuring stable, smooth, and leak-free fluid transfer.

Main Applications

The SN Magnetic Drive Three Screw Pump is widely used in:

• Petroleum and fuel oil transfer systems

• Marine lubrication and fuel systems

• Power plant lubrication systems

• Chemical and petrochemical industries

• Industrial hydraulic systems

• Hazardous or flammable liquid handling systems

• Closed-loop circulation systems

• Precision industrial oil supply systems

Suitable Media

The pump is suitable for transporting:

• Lubricating oil

• Hydraulic oil

• Fuel oil and diesel

• Light and medium viscosity oils

• Chemical liquids (compatible materials required)

• Flammable and explosive liquids

• Industrial process fluids

• High-value or sensitive liquids requiring sealed transfer

Product Advantages

Compared with traditional mechanically sealed screw pumps, the SN Magnetic Drive Three Screw Pump provides true zero leakage, higher safety, and reduced maintenance. Compared with conventional gear pumps, it offers smoother flow, lower noise, and better adaptability for continuous high-reliability operation.

Customization Options

Customized configurations are available according to different industrial requirements, including:

• Cast iron, stainless steel, or alloy steel materials

• Different flow and pressure specifications

• Explosion-proof motor configurations

• High-temperature resistant designs

• Variable frequency drive systems

• Skid-mounted integrated systems

• Special magnetic coupling strength and sealing configurations

The SN Magnetic Drive Three Screw Pump combines the stability of screw pump technology with the safety of magnetic drive sealing, providing a reliable, efficient, and completely leak-free solution for modern industrial fluid transfer systems.