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Coal Screening Machine For Sale South Africa

Coal Screening Machine For Sale South Africa

Factors Affecting The Screening Effect Of Coal Screening Machine

There are many types of Coal Screening Machines. We usually use electromagnetic Coal Screening Machines, circular Coal Screening Machines, linear Coal Screening Machines, etc. The latter two are inertial Coal Screening Machines, which is the Coal Screening Machine we are used to. In daily production, sometimes the screening effect is not ideal, and there are many factors affecting the screening effect, including the nature of the material, equipment factors, and operational factors. The reasons for poor screening quality are: mesh hole blockage, screen hole wear, uneven Coal Screening Machine feeding, excessive material on the screen, and insufficient screen angle.

1. Screen Hole Blocking

When the mud content and water content in the feed are high, the material will stick to the mesh hole and block the mesh hole. At this point, the sieve hole should be cleaned first, and then the water spray amount and the screen inclination angle should be appropriately adjusted.

2, The Screen Hole Is Seriously Worn

When the screen is used for a long time, the screen hole is seriously worn and the screening effect is seriously affected. At this point, the worn screen holes should be repaired. When the wear is serious, the screen should be considered for replacement.

3, Coal Screening Machine Feeding Uneven

When the feed tank of the Coal Screening Machine is too narrow, the material cannot be evenly distributed along the entire screen surface, so that the screen surface cannot be effectively utilized, and the screening effect is affected. At this point, the width of the feed chute should be adjusted to make the feed of the Coal Screening Machine uniform.

4, The Material On The Sieve Is Too Thick

The excessive thickness of the material on the sieve may be caused by the increase of the feed amount, the obstruction of the sieve hole, and the small inclination of the sieve surface. At this time, it should be adjusted according to the specific circumstances.

5, The Screen Surface Angle Is Not Enough

For a circular Coal Screening Machine, the most common reason for the poor screening effect is that the angle of inclination of the screen surface is not sufficient, and it is necessary to raise the rear support seat. In practical applications, the inclination angle of the screen surface is suitable at 20°. Generally, the inclination angle of the circular Coal Screening Machine is 16 to 20°. If the inclination angle is lower than 16°, the phenomenon that the screen is not smooth or the material is rolled upwards may occur.

6, The Eccentric Block Movement Direction Is Not In The Same Phase

For linear Coal Screening Machines and high-frequency Coal Screening Machines, the poor screening quality may be related to the direction of motion of the eccentric block, because two sets of eccentric blocks of the same mass are required to perform self-synchronous reverse rotation, and a single direction of vibration is generated at each moment. The exciting force at a fixed angle with the horizontal direction causes the screen box to reciprocate linearly. If they are not in the same phase, the direction of the exciting force does not overlap with the direction of vibration, and the effect of efficient screening is not achieved.

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