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Is there a relationship between dewatering screen support beam wear and screen mesh breakage?
release time:
2026-09-24
Vibrating dewatering screens are responsible for reducing moisture in quartz sand wet production lines, but frequent screen mesh damage is a headache for many customers. Some screen meshes develop cracks within less than
The vibrating dewatering screen is responsible for reducing moisture in quartz sand wet production lines, but frequent screen mesh breakage is a headache for many customers. Some screens develop cracks in less than a week after installation, material leaks through the cracks, and dewatering performance drops significantly. The problem usually isn't the screen quality itself, but the screen tension and feeding method.
Insufficient screen tension is the primary cause of early screen breakage. If a polyurethane screen is installed with insufficient tension, it will vibrate up and down during operation, repeatedly striking the support beams, and cracks will form at the fixing bolt holes in a short time. The correct approach is to use a tensioning tool to stretch the screen until it doesn't sink when pressed by hand, then tighten the clamp bolts. After each screen replacement, run it without load for 15 minutes first, observe whether the screen surface is loose, and re-tension immediately if any slack is found.
Eccentric feeding or excessive material layer thickness will also accelerate screen damage. If material continuously falls on one side of the screen surface for a long time, the screen in that area bears far greater impact than other parts, and localized damage will soon occur. A distribution plate should be installed at the dewatering screen feed inlet to spread material evenly across the entire screen surface. The material layer thickness is recommended to be controlled at 30-50mm; if too thick, the bottom material is difficult to pass through the screen, and it also increases the load on the screen surface. When feed volume needs to be increased, prioritize widening the screen surface or reducing the feed speed, rather than piling up the material layer to boost output.
Worn support beams or aged rubber pads can also cause screen breakage. After the support beam surface wears, sharp edges appear, and the screen repeatedly rubs against these sharp edges during vibration, quickly getting cut. Check the support beam wear once a quarter; when wear exceeds 2mm, weld and grind it smooth. When the rubber buffer pads between the support beams and the screen age and harden, they lose their cushioning effect, which also accelerates screen damage. It is recommended to replace the rubber pads every six months.
During daily inspections, check the screen surface for damage or slack once per shift, and replace it promptly when cracks are found—don't wait until large-scale tearing occurs to shut down. For equipment operation-related issues, you are welcome to call Shanlu Heavy Industry: Manager Zhang 13583776655 (same on WeChat).
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