A vibrating screen works through the reciprocating rotary vibration generated by vibrator excitation. The upper rotating weight of the vibrator causes the screen surface to produce planar circular vibration, while the lower rotating weight causes the screen surface to produce conical rotary vibration; their combined effect causes the screen surface to produce compound rotary vibration.
The motor is a key component of the vibrating screen. Improper use can cause the vibrating screen to malfunction, yet the motor often burns out during use - that is because you have overlooked the following issues.
1. Adjustment of the eccentric blocks
When adjusting the eccentric blocks, mistakenly reversing the direction of the blocks at both ends creates a spatial torque on the vibration motor, causing it to work in an abnormal state and eventually burn out. Therefore, when adjusting the eccentric blocks, pay attention to their symmetry - the blocks at both ends must correspond to each other in pairs; in other words, the line connecting the centers of the eccentric blocks at both ends must be parallel to the shaft and must not be skew.
2. Heat dissipation
An ordinary motor has a fan at one end; during operation, air flows along the ribs on the housing, which not only dissipates heat quickly but also keeps dust off, allowing the motor to work in good condition. A vibration motor, however, has no fan and relies entirely on natural cooling. In addition, the working environment is mostly harsh with heavy dust, which easily accumulates on the motor surface, causing excessive temperature and burning out the motor.
3. The temperature of the material conveyed by the equipment must not be too high.
Because the vibration motor is rigidly connected to the equipment - effectively forming one unit - if the material conveyed is too hot, the temperature of the motor base and housing can easily rise, making heat dissipation difficult and burning out the motor.