Magnetic pumps and centrifugal pumps are commonly used pumps in chemical production. Magnetic pumps are a type of centrifugal pumps, and magnetic pumps are also called magnetic centrifugal pumps.
1. Simple and compact structure, high mechanical strength, easy disassembly and maintenance, and lower foundation requirements than magnetic pumps.
2. There is no valve in the centrifugal pump, so it is suitable for conveying suspensions. The special design can also convey suspensions of large solids.
3. High-speed operation, can be directly connected to the motor, and the transmission mechanism is simple and easy to install.
4. The centrifugal pump has a large flow range and can convey large flow and high head.
5. The mechanical seal is connected to the impact water, and it can run empty for a short time, and can convey medium with small particles.
1. Centrifugal pumps are not suitable for low flow operation. Long-term use at low flow and high head will be restricted and affected.
2. Improper installation will cause "cavitation".
3. The efficiency is also lower than that of magnetic pumps.
4. The cooling, flushing, and quenching required for mechanical seal pumps are complicated.
1. The magnetic pump is lubricated and cooled by the medium being transported, without the need for independent lubrication and cooling water, which reduces energy consumption.
2. The pump shaft is changed from a dynamic seal to a closed static seal, and the medium is enclosed in an isolation sleeve, which can transport the medium without leakage, and is used to transport flammable, explosive, toxic, and precious liquids.
3. The magnetic coupling rotates synchronously with the inner magnet, without contact and friction, with low power consumption and high efficiency, reducing the impact of motor vibration on the pump and lower noise.
4. When overloaded, the inner and outer magnetic rotors slip relatively, which protects the motor and pump.
5. Not easy to break and easy to maintain.
1. Compared with centrifugal pumps, the price is more expensive.
2. Magnetic pumps cannot transport media with particulate matter, otherwise they are easy to break.
3. Absolutely no idling is allowed.
1. The motor of a centrifugal pump drives the impeller through a coupling, while the magnetic pump drives the impeller through the magnetic eddy currents generated by the internal and external magnets.
2. The magnetic pump has an internal magnetic rotor and an external magnetic rotor, while the centrifugal pump does not.
3. The magnetic pump has no shaft seal, while the centrifugal pump has a shaft seal.
4. The magnetic pump needs to be lubricated and cooled by the conveying medium, and cannot run idly or convey materials containing impurities, while the centrifugal pump can.
