How to Correct Material Deviation on a Gyratory Screen Machine
When dealing with material deviation on a gyratory screen machine, several factors need to be adjusted to ensure smooth operation and accurate screening. Below are the primary methods to correct such deviations:
Adjusting the Vibrational Force
Inspect and Adjust the Vibration Motors: It’s essential to verify that the eccentric weights of both vibration motors are set at identical angles. Inconsistent angles can lead to uneven vibrational forces, causing material to deviate on the screen. By synchronizing the angles of the eccentric weights, the forces are balanced, correcting the material flow.
Ensure Opposite Motor Rotation: The gyratory screen requires that the two vibration motors rotate in opposite directions to create the necessary horizontal reciprocating motion. If both motors rotate in the same direction, reverse the power connection on one motor to achieve the opposite rotation, which stabilizes the material’s linear movement across the screen.
Checking the Screen Frame and Mesh
Verify Screen Frame Rigidity: A weak screen frame can result in torsional movement rather than the required linear motion, contributing to material deviation. If the frame’s rigidity is insufficient, consider upgrading to a stronger mesh frame and securing it firmly. For wider screens, using a pressurized frame clamp in the center helps maintain uniform vibration across the screen.
Select the Appropriate Screen: The choice of screen must match the material being processed. An unsuitable screen can lead to blockages or poor flow, causing material deviation. Ensure the screen is appropriate for the material’s properties to avoid these issues.
Optimizing the Feeding Process
Ensure Even Material Distribution: Material should be evenly distributed across the screen surface during feeding. Uneven feeding can lead to accumulation or poor flow, causing deviation. Adjust the feeding mechanism to ensure the material enters the screen surface uniformly and continuously.
Assessing Additional Factors
Consider Material Properties: The physical properties of the material, such as particle size, moisture content, and viscosity, can influence how it moves on the screen. Changes in these properties may require adjustments to screening parameters or even selecting a different screen to maintain efficiency.
Regular Equipment Maintenance: Consistent maintenance of the gyratory screen machine is crucial. Regularly inspect components like vibration motors, bearings, and screens to ensure they are functioning properly. Replace any worn or damaged parts promptly to prevent them from affecting the screening process.
Conclusion
To address material deviation on a gyratory screen machine, it’s important to check and adjust the vibrational forces, ensure the screen frame and mesh are properly selected and secured, optimize the feeding method, and regularly maintain the equipment. By considering these factors comprehensively, you can effectively minimize or eliminate material deviation during the screening process.
