What are the Common Causes of Vibrating Screen Defects and Breakdown?

March 12, 2021

Construction, mining, coal, and other industries utilise vibrating screens since they can effectively separate feeds that contain solid and crushed ores. These vibrating screens can be used for both wetted and dried feed, making them versatile and useful for the mentioned industries.

What makes vibrating screens notable for these industries is that they can separate particles efficiently. They can likewise operate without consuming too much energy and spending a lot of money. Maintenance and downtimes are also expected to be lessened with the use of vibrating screens, ensuring that the whole industrial processes will be carried out on time.

However, just like other tools, a vibrating screen can still have some defects and subsequently experience breakdown along the way. Some of the most common causes of these problems are as follows:

Screen Blockage

The screening elements of the vibrating screen have perforations that would allow certain small elements to pass through. If the mud and water content that can be found in the feed are too high, some of its materials can easily stick and block the perforations or holes. Processing materials that are too thick can likewise generate screen blockage. Without regular cleaning or maintenance, the vibrating screen might yield poor screening quality and cause more issues.

Damaged Motor

The motor is designed to provide the needed movements and vibrations of the vibrating screen. And so, if the vibrating screen does not move at all, then its motor may have already been damaged. The coupling between the drive system and the counterweight may have also been damaged and broken if the vibrating screen does not move even if the motor is still working. These issues will surely lead to the breakdown of the vibrating screen.

Wear and Tear

Wear and tear on screening elements can likewise force the vibrating screen to work poorly and eventually breakdown. The occurrence of this issue can be attributed to prolonged use of the screen without conducting regular maintenance and repairs. Other components of the vibrating screen such as springs, bolts, and bearings can also deteriorate over time, which is why checking them can help in preventing breakdowns and maintaining optimum screening quality throughout the operations.

Bearing Issues

One other part of the vibrating screen that can cause its defects and unfortunate breakdowns are the bearings. Bearings are designed to work with a temperature between 35°C and 60°C. Operating beyond these temperatures can easily affect the performance of the bearings. Overheating of bearings can be caused by too small radial clearance. If the top of the bearing cover is too tight, then it can likewise trigger overheating. Failure to change or refill the oil of the bearings can also cause temperatures problems.

To find out more about these problems, just give us a call at Hawk Machinery. We were established in Melbourne in 1988, manufacturing and supplying crushing, screening, feeding, and conveying equipment to the extractive industry together with plant layout and turnkey projects. Over this time, we have built a reputation for providing “what the customer wants” with the flexibility of design and manufacture to make a “modified standard product” made to suit the client’s specific needs.

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