How to Improve Spiral Press Filter Mesh Performance and Service Life

The spiral press filter mesh is a high-strength polyester filtration mesh designed for efficient solid-liquid separation, sludge dewatering, and filtration applications in industrial mesh filter presses.

Featuring a spiral loop structure, this polyester press filter mesh provides high strength, high density, excellent resistance to acids and alkalis, outstanding wear resistance, and extended service life. It is widely used in environmental protection and wastewater treatment industries.

Factors Affecting the Operating Efficiency of the Polyester Spiral Press Filter Mesh

Material and Weaving Technique Determine Dewatering Performance

In the field of industrial solid-liquid separation, the performance of the polyester spiral press filter mesh directly determines the efficiency of sludge dewatering and the final moisture content.

Woven from high-strength, low-elongation polyester monofilaments with precision weaving techniques, the polyester spiral press filter mesh resists deformation under high-pressure shear forces, ensuring stable and continuous dewatering performance.

Precise Matching

Based on our years of experience in manufacturing the polyester spiral press filter mesh, the requirements for mesh porosity vary significantly depending on the characteristics of the sludge. 

When you are purchasing the polyester spiral press filter meshes, you should make your selection based on your specific production requirements, or simply send us the relevant parameters, and our professional technical team will recommend the most suitable mesh for you.

Press Filter Mesh Maintenance and Cleaning

Proper cleaning and maintenance can significantly extend the service life of the polyester spiral press filter mesh.

We recommend you thoroughly use the high-pressure water gun to wash away any residual filter cake from the polyester spiral press filter mesh surface during your downtime to prevent the pores from becoming clogged and hardened.

Periodically inspecting the filter mesh to ensure the press filter mesh remains within its service life is also an essential step in guaranteeing production quality.

How to Determine if the Polyester Spiral Press Filter Mesh Needs Replacement

The primary criteria for determining whether a polyester spiral filter mesh needs to be replaced are the extent of its physical damage and whether its filtration performance has irreversibly deteriorated.

Sun Hung has compiled the following checklist of points to consider, helping you make a quick assessment.

Inspect the Press Filter Mesh for Structural Physical Damage

Physical damage to the polyester spiral press filter mesh leads to a significant reduction in tensile strength, creating a risk of sudden breakage during operation. This can cause a complete production line shutdown and potentially damage peripheral equipment such as the doctor blades and rollers.

This phenomenon manifests as severe wear and thinning of the polyester spiral filter mesh. So you can record the press filter mesh’s specifications before use or compare it with a new mesh to check for signs of significant thinning, softening, or loss of elasticity.

At the same time, if the polyester spiral press filter mesh exhibits longitudinal tearing, holes, or severe edge wear, the existing mesh must be replaced immediately.

Functional Failure

Functional failure is typically an indication of uneven internal stress and structural deformation within the polyester spiral press filter mesh. Once the issue appears, if you continued operation would exacerbate wear and compromise the effective filtration area.

This manifests specifically as uncorrectable mistracking of the polyester spiral press filter mesh, and even with repeated adjustments to the tracking system, the mesh continues to drift to one side and may even develop creases or folds.

Irreversible Decline in Filtration Performance

This is because the material particles have become deeply and permanently embedded within the fibers of the polyester spiral press filter mesh, making them impossible to remove by conventional means. Consequently, the press filter mesh loses its basic filtration performance.

To determine whether a polyester spiral press filter mesh is beyond recovery due to severe clogging, one can assess changes in performance following a deep cleaning process. 

For instance, after cleaning with a high-pressure water jet, steam, or specialized cleaning agents, observe whether the press filter mesh’s water permeability has been restored. If there is no significant improvement in permeability after cleaning, it indicates that the filter mesh may have suffered irreversible clogging.

Abnormal Press Filter Mesh Operation

This is caused by a drive failure resulting from excessive wear on the inner surface of the polyester spiral press filter mesh, which leads to insufficient friction.

Specifically, the polyester spiral press filter mesh continuously slips on the drive roller, and slippage cannot be avoided even when the tensioning device is adjusted to the maximum.