What are the technical advantages of permanent magnet couplers?

The permanent magnet coupler is mainly composed of copper rotor, permanent magnet rotor and controller. Generally, the copper rotor is connected with the motor shaft, and the permanent magnet rotor is connected with the working machine shaft. There is an air gap (called an air gap) between the copper rotor and the permanent magnet rotor, and there is no mechanical connection to transmit torque. In this way, a soft (magnetic) connection is formed between the motor and the working machine, and the shaft torque and speed of the working machine can be changed by adjusting the air gap. Due to the different air gap adjustment methods, the permanent magnet eddy current transmission device can be divided into standard type, delay type, limited moment type and speed control type and other different types.

Technical advantages of permanent magnet couplers:

1. Energy saving effect: 25% ~ 66%

2. The maintenance workload is small, almost maintenance-free products, and the maintenance cost is very low.

3. Allows large installation and alignment errors (can be 5mm), which greatly simplifies the installation and commissioning process.

4. It has an overload protection function, which improves the reliability of the entire system and completely eliminates the damage to the system caused by overload.

5. Improve the starting ability of the motor, reduce shock and vibration, and coordinate the load distribution of multi-machine drive.

6. The speed control type can realize the stepless adjustment of the output speed under the condition that the motor speed is basically unchanged.

7. Long service life, design life is 30 years. And can extend the service life of the parts in the system.

8. Easy to realize remote control and automatic control, high process control.

9. Simple structure, adapt to various harsh environments. Environmental protection, no harmonics. Small size and easy installation.

Permanent magnet couplers are mainly used for different types of fans, water pumps, material conveyors, bucket elevators, ball mills, winding machines, crushers, mixers, stranding machines and other mechanical equipment. The main industries that use permanent magnet couplers are: 1. Water industry/sewage treatment; 2. Oil and gas; 3. Power generation/thermoelectric; 4. Refrigeration and heating central air conditioning; 5. Paper and pulp; 6. Agricultural irrigation; 7. Coal and cement; 8. Metallurgy/steel, etc.

The permanent magnet coupler solves the problem of light load starting. The long-distance suspension conveyor is difficult to start, and sudden start is easy to damage the chain. After being driven by a permanent magnet coupler, it can start slowly and flexibly to protect the motor and chain from damage during the starting process. The permanent magnet coupler coordinates the multi-power machine to balance and drive the single-chain multi-drive station suspension conveyor. If the motor speed of each drive station is inconsistent, the chain will be loose and tight. After installing the permanent magnet coupler, the problems of multi-machine drive, load balancing, and synchronous operation are solved, the chain elasticity is consistent, the operation is good, and the failure rate is reduced. The double-chain suspension conveyor is the same as the gantry crane, and the conveyor chains on both sides should be synchronized, otherwise it will be skewed and the machine may be damaged in severe cases. After the permanent magnet coupler is used for transmission, by adjusting the filling amount, the two transmission chains can be basically synchronized to avoid failure.