What Are the Advantages of Mining Circular Vibrating Screens

Mine circular vibrating screen is a new type of vibrating screen, which has the characteristics of reasonable structure, high screening efficiency, and low vibration noise. So how does the mining circular vibrating screen work? What are the advantages?

Mine circular vibrating screen structure

Mine circular vibrating screen is mainly composed of a screen box, exciter, suspension (or support) device, and motor. The motor drives the main shaft of the exciter to rotate through the V-belt, and the screen box vibrates due to the centrifugal inertial force of the unbalanced weight on the exciter. By changing the eccentric weight of the exciter, different amplitudes can be obtained.

Working Principle of Mining Circular Vibrating Screen

During operation, the motor drives the V-belt and the exciter’s main shaft into rotary motion. The centrifugal inertia force generated by the unbalanced weights on the exciter forces the screen box to vibrate. Material on the screen surface is thrown upward by this force, moves forward a certain distance, and then falls back onto the screen surface. This repeated cycle completes the screening process. Additionally, the amplitude of the vibrating screen can be adjusted by modifying the weight and position of the counterweights.

Advantages of Mining Circular Vibrating Screen

1. The mining circular vibrating screen utilizes a cylindrical eccentric shaft exciter and partial blocks for amplitude adjustment. It features a long material flow path and supports multiple screening specifications. Key benefits include a reliable structure, strong excitation force, high screening efficiency, low vibration noise, durability, ease of maintenance, and safe operation.

2. The drive system of the mining circular vibrating screen employs petal-shaped couplings and flexible disc couplings, featuring a simple structure that is easy to manufacture and maintain. This design effectively overcomes the common issue of universal couplings being prone to damage. The vibrator utilizes a block eccentric structure, ensuring a straightforward and reliable design.

3. The mining circular vibrating screen delivers high processing capacity and screening efficiency, with optimized technical parameters, robust structural strength and rigidity, reliable operation, low noise levels, and convenient maintenance.

Precautions for Mining Circular Vibrating Screens

1. The springs of the circular vibrating screen must be positioned vertically, and the contact surface between the upper spring support and the spring itself must remain horizontal. After adjustment, secure the upper spring support to the screen box trunnion using bolts, then spot-weld it into place to ensure stability.

2. Determine the driving direction of the circular vibrating screen by standing at the feeding end and observing the motor position relative to the material flow direction to identify left or right drive configurations. To change the driving direction, remove the vibrator pulley from the balance wheel, reinstall it on the opposite side’s balance wheel, and tighten securely.

3. Ensure the V-belt tension has sufficient adjustment range, and verify that the corresponding grooves on both belt pulleys align precisely within their respective planes.

4. Following the installation and adjustment of the circular vibrating screen, conduct a no-load test run for at least 2 hours. The operation must be smooth with no abnormal noise; amplitude and motion trajectory should meet specifications, and bearing temperature must not exceed 75°C.

5. Once the no-load test is passed, proceed to the load test run. The duration of the load test should follow process testing requirements.

6. Before starting the circular vibrating screen for testing, manually rotate (or use other methods to turn) the vibration exciter. Rotation must be flexible and free of jamming; only then can the machine be officially started.

Proper execution of these steps ensures a successful installation of the circular vibrating screen, significantly facilitating its subsequent operation and preventing issues caused by poor installation.