The differences are as follows:

　　1. The motor of a common centrifugal pump directly drives the pump impeller, or drives the impeller through a coupling. A magnetic pump drives the impeller through magnetic force. It can eliminate the need for mechanical seals, effectively preventing water leakage.

　　II. However, magnetic pumps can only operate at low power. The magnetic drive part consists of an inner and an outer magnetic rotor; a spacer isolates the inner magnetic rotor and the medium from the outer magnetic rotor; the outer magnetic rotor is driven by a motor, which utilizes the magnetic coupling characteristic to rotate the inner magnetic rotor, completing non-contact torque transmission and thus achieving the purpose of driving the pump. The spacer completely isolates the inner magnetic rotor and the medium from the outer magnetic rotor, making the magnetic drive pump different from other mechanically sealed pumps. It has no dynamic seal, only static seal, fundamentally solving the problems of leakage, emission, dripping, and leakage in the process of mechanical sealing pumps, achieving complete leakage-free operation.

　　Compared to centrifugal pumps that use mechanical seals or packing seals, magnetic pumps have the following advantages: 1. The pump shaft changes from a dynamic seal to a closed static seal, completely avoiding medium leakage; 2. No independent lubrication and cooling water are required, reducing energy consumption; 3. The transmission changes from coupling drive to synchronous drag, eliminating contact and friction. It has low power consumption, high efficiency, and damping and vibration reduction effects, reducing the impact of motor vibration on the pump and the impact of pump cavitation vibration on the motor; 4. When overloaded, the inner and outer magnetic rotors slide relative to each other, providing protection for the motor and pump.