How does a magnetic gear pump work?

A magnetic drive gear pump is a type of gear pump that uses a magnetic coupling to transfer rotational energy from the motor to the pump’s internal gears, eliminating the need for mechanical seals. This setup offers a number of benefits, including leak-free operation and enhanced reliability. Here’s a breakdown of how it works:

Main Components:

Magnetic Drive (Magnetic Coupling): This consists of two sets of magnets that transfer power without any physical connection.
External Magnet: The first set of magnets is attached to the motor shaft and is placed outside the pump casing.
Inner Magnet : The second set of magnets is mounted on the pump shaft inside the casing.
Gears: PEEK material wear resistance, corrosion resistance
Pump Body : Food grade 316L Stainless steel and PPS
Gear shaft : Stainless steel and ceramics
Gear Mechanism: Typically includes two intermeshing gears (usually an external and internal gear) that move the fluid.

How does a magnetic gear pump work?

Motor Rotation: The motor generates rotational power, which drives the outer magnet rotor attached to the motor shaft. This rotor is typically positioned outside the pump casing.
Magnetic Coupling: The external magnet rotor generates a magnetic field that induces rotation in the inner magnet rotor inside the pump casing. This magnetic coupling transfers power to the inner rotor without any physical contact between the motor and the pump. The strength of the magnetic field is sufficient to transmit the rotational force, so no direct mechanical connection is needed.

Pump Shaft Rotation: The inner magnet rotor is attached to the pump shaft, and as it rotates, it drives the gears inside the pump. These gears are responsible for the fluid movement.

Gear Mechanism: The rotating gears (usually internal and external gears) trap and transport the fluid from the inlet to the outlet of the pump. As the gears mesh, they create pockets of fluid and move them through the pump while maintaining constant pressure.

Sealed Design: Since there are no direct mechanical seals in the drive section, Fluoroelastomer (FKM) and Polytetrafluoroethylene (PTFE) O-Ring are used as static seals. the pump is completely sealed. This makes it ideal for handling hazardous, toxic, or corrosive fluids where leakage could be dangerous.

Magnetic drive gear pumps are commonly used in industries where safety, reliability, and cleanliness are paramount:
Chemical Processing: For pumping corrosive or toxic chemicals.
Pharmaceuticals: To handle sensitive or sterile fluids.
Food and Beverage: For sanitary and contamination-free fluid transfer.
Petrochemicals: For handling volatile hydrocarbons.
Water Treatment: For dosing chemicals.