The amplitude of the vibrating screen needs to be adjusted by controlling the magnitude of the current output. If it is a swinging vibrating screen, the frequency of vibration can only be controlled by adjusting the speed of the motor, because the swinging vibrating screen uses the motor to drive the eccentric block to rotate to achieve vibration. The electromagnetic vibrating screen needs to adjust the amplitude by adjusting the potentiometer. The electromagnetic vibrating screen realizes vibration by attracting moving iron with electromagnet. The larger the current is, the larger the amplitude is. The smaller the current is, the smaller the amplitude is. When designing a vibrating screen, the amplitude can be adjusted. If the amplitude of the vibrating screen is large, it can be reduced. Conversely, the speed of equipment screening can be controlled by adjusting the amplitude. But what about the amplitude of the vibrating screen? How to adjust the amplitude?
1、 Vibration screen amplitude
The amplitude refers to the amplitude of the vibration of the vibrating screen, which is half of the working stroke of the screen box, denoted by A. The unit is mm.
2、 Steps for adjusting the amplitude of the vibrating screen
1. Firstly, determine whether the amplitude of the vibrating screen can meet the requirements of the screening operation in its working state. If not, adjust the amplitude;
2. Turn off the power supply;
3. Remove the shield from the vibrator;
4. The outermost one of each pair of balance blocks on the vibrator shaft to change the excitation force generated by the vibrator;
5. Place the balance blocks at the same percentage of the maximum excitation force and lock the eccentric blocks;
6. Pay attention to the vibration source on the vibrating screen, that is, the adjustment amount of the exciter or vibration motor must be the same, otherwise it may cause equipment damage.
3、 Different adjustment methods
1. If the vibration source is an exciter, the weight of the eccentric block can be increased;
2. If it is a vibration motor, the amplitude adjustment depends on the angle between the eccentric blocks at both ends of the motor shaft to change the magnitude of the excitation force. If the angle is small, the excitation force will increase, and the amplitude will increase; On the contrary, as the angle increases, the excitation force decreases and the amplitude decreases;
3. The eccentric shaft vibrator can increase or decrease the amplitude of the vibrating screen by adding or removing counterweight blocks on the flywheel and pulley.
The above is how to adjust the amplitude of a three-dimensional rotary vibrating screen. If you have any related screening problems or needs, and want to learn more product information, please call +86-13233806514, and we will be happy to serve you
