The screen mesh is a crucial component of the vibrating screen, essential for separating and grading materials to produce qualified products. However, frequent breakage of the vibrating screen mesh is a common issue due to high wear and tear. This article explains why the wire mesh for vibrating screen often breaks and provides effective solutions.
Types of Vibrating Screen Mesh Improper Selection
Cause Analysis: There are various types of vibrating screen meshes, including metal wire woven mesh, perforated plate mesh, electroformed mesh, and polyurethane mesh. Selecting an unsuitable type for the material can lead to mesh breakage. For instance, perforated plate mesh is required for materials with high specific gravity, while polyurethane mesh is necessary for irregularly shaped, angular materials. Metal woven mesh and electroformed mesh are suitable for screening lighter materials.
Stainless Steel Woven Mesh
Stainless Steel Perforated Sheet
Wire Braided Mesh
Solution: Select the appropriate type of vibrating screen mesh based on the specific gravity and shape of the material to ensure durability and effectiveness.
Inappropriate Vibrating Screen Mesh Material Selection
Cause Analysis: Common materials for vibrating screen meshes include 304 stainless steel, carbon steel, and polyurethane. 304 stainless steel is more durable than carbon steel, while polyurethane is the most durable but also the most expensive. If the material does not match the screening requirements, it can cause the mesh to break.
Solution: Choose the appropriate vibrating screen mesh material based on the material properties. For example, use 304 stainless steel or polyurethane mesh for materials that require high wear resistance.
Polyurethane vibrating screen mesh is commonly used for wet and highly abrasive materials because it provides better wear resistance and reduces mesh clogging.
Insufficient Tension on the Vibrating Screen Mesh
Cause Analysis: During the screening process, the vibrating screen mesh directly bears the weight of the material. Over time, it may become slack, leading to insufficient tension. A slack mesh can cause secondary vibration between the screen body and the mesh, leading to breakage from mutual impact. According to ASME mechanical engineering research on vibration fatigue, continuous vibration stress is one of the major causes of premature structural fatigue in industrial equipment.
Reference:
ASME Mechanical Engineering Research on Vibration Fatigue
Solution: Regularly check, replace, and adjust the tension of the vibrating screen mesh, keeping it flat to ensure it maintains proper tension during use.
How to replace the Gyratory Vibrating Screen mesh tep by step?
Please view the following video:
Overloading the Vibrating Screen with Material
Cause Analysis: If too much material is loaded onto the screen at once during the screening process, it can accumulate on the mesh surface, increasing the load and potentially collapsing the mesh. Additionally, materials with high moisture content and stickiness can adhere to the mesh, causing clogging and accelerating breakage.
Solution: Control the amount of material loaded each time to avoid accumulation on the mesh surface. Regularly clean the vibrating screen mesh to prevent clogging, especially for materials with high moisture and stickiness.
In mining and aggregate applications, excessive impact loading is one of the main reasons for premature vibrating screen mesh failure.
How to Choose the Right Vibrating Screen Mesh
Selecting the correct vibrating screen mesh depends on material size, moisture content, abrasion level, and screening capacity. Using the wrong mesh specification can reduce screening efficiency and shorten mesh service life.
| Selection Factor | Recommendation |
|---|---|
| Abrasive materials | Use polyurethane or thicker wire mesh |
| Wet or sticky materials | Use anti-clogging mesh or polyurethane mesh |
| Fine particle screening | Use smaller mesh aperture |
| Heavy materials | Use perforated plate mesh |
| Corrosive environments | Use 304 stainless steel mesh |
Common Vibrating Screen Mesh Problems and Solutions
| Problem | Possible Cause | Recommended Solution |
|---|---|---|
| Rapid mesh wear | High abrasion materials | Use polyurethane mesh |
| Edge tearing | Insufficient tension | Re-tighten the mesh |
| Mesh clogging | High moisture content | Clean screen regularly |
| Broken wires | Excessive vibration impact | Adjust feeding and vibration amplitude |
Best Practices to Extend Vibrating Screen Mesh Life
- Maintain proper mesh tension during operation
- Avoid overloading the vibrating screen
- Inspect screen mesh regularly for wear and broken wires
- Reduce direct impact feeding when possible
- Clean blocked mesh apertures in time
- Select the correct mesh material for the application
Conclusions
The issue of screen mesh breakage in vibrating screens can be effectively reduced by selecting the appropriate vibrating screen mesh size, type and material, maintaining proper tension, and controlling the amount of material loaded. Companies should regularly inspect and maintain the vibrating screen mesh, making timely adjustments and replacements to ensure smooth screening processes and enhance production efficiency. This analysis and these suggestions will help users better utilize vibrating screens, reduce mesh breakage rates, and extend the equipment’s lifespan.
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