Paper Mill Equipment Solving Mid-consistency Pressure Screen Issues

The Mid-consistency Pressure Screen is a key machine in the paper making line. It runs at high pulp consistency, which makes fibers clump together and impurities hard to wash away. This creates high heat and mechanical load on the seals, bearings, and drive systems. The most common problem with the Mid-consistency Pressure Screen is bearing failure in the upper half. Because it uses a vertical drive, high pulp temperatures make the grease thin and flow down. The top half of the bearing loses lubrication and quickly fails. Another problem is poor seal flushing water. If the water is missing, the mechanical seal faces will rub dry or let impurities in. This causes leaks that damage the bearings, leading to high current, strong vibration, and machine breakdown.

To fix these problems with your Mid-consistency Pressure Screen, you need strict daily maintenance. First, create a high-temperature grease adding rule. Do not rely on just one initial filling. You must add grease regularly to make sure the upper part of the bearing stays lubricated. Second, always check the seal flushing water before starting. Never start the main motor if the water pressure or flow is not normal. Third, watch for early signs of seal leaks. If you see a leak, check the bearing lubrication right away, not just the seal. The table below shows the key problems and solutions for the Mid-consistency Pressure Screen:

Problem Area	Cause	Solution
Bearing upper half failure	High pulp temp (60–80℃) makes grease thin and flow down	Add grease regularly to the upper half
Seal failure	Missing or abnormal flushing water	Force check seal water before starting
Bearing damage from leaks	Slurry leaks into the bearing chamber	Check bearing oil when leaks happen
Operating consistency	Runs at high consistency (8%–15%)	Strict monitoring and maintenance

We offer high-quality Mid-consistency Pressure Screen and other paper mill equipment. Our Mid-consistency Pressure Screen is built for easy maintenance and stable operation to reduce your downtime. We supply complete paper production lines for different paper grades. We also provide turnkey paper production line services. If you need a reliable Mid-consistency Pressure Screen for your paper making machine, we can help. Contact us for more information.

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