High Efficiency G2 Metal Mesh Pre-Air Filter - China Suppliers & Factory, Aluminum & Stainless Steel Options
Application Area
▮ Metal Mesh Pre-filters are widely used in Primary Filtration to remove Moisture, Oil Residue, or contaminants from various environments.
Filter Media Materials
Metal mesh filters do not use any filter paper or chemical fiber materials; their filtration function is entirely achieved through aluminum meshes of different structures and mesh counts. They are mainly divided into the following types:
Plain Weave Aluminum Mesh
- Description: The most common weaving method, where warp and weft wires are interwoven in an over-and-under pattern, forming square openings.
- Features: Stable structure, high strength, and relatively low cost.
- Applications: Often used as a support layer in filters or for primary filtration where high filtration precision is not required.
Twill Weave / Dense Weave Aluminum Mesh
- Description: The warp and weft wires are interwoven at a higher density, resulting in smaller mesh openings, and the wire diameter may be thicker.
- Features: Higher filtration precision than plain weave, greater dust-holding capacity, while maintaining good strength.
- Applications: Serves as the main filtration layer in filters, used to capture smaller particles.
Multi-layer Composite Aluminum Mesh
- Description: This is the core technology of all-aluminum mesh filters. It involves layering, or pressing together aluminum meshes of different mesh counts (i.e., pore sizes).
- Structure: Typically a sandwich structure of "support layer + transition layer + fine filtration layer."
- Support Layer: Located on the airflow inlet side, made of aluminum mesh with a smaller mesh count (larger pores) and thicker wire diameter, primarily serving as pre-filtration and supporting the overall structure.
- Fine Filtration Layer: Located on the airflow outlet side, made of aluminum mesh with a larger mesh count (very small pores), responsible for capturing the finest particles.
- Transition Layer: Positioned between the two, with gradually varying mesh counts to achieve gradient filtration, effectively extending the filter's service life.
- Features: Enables depth filtration, with extremely high dust-holding capacity and high filtration efficiency.
Frame Materials
To maintain the structural strength of the filter, its outer frame is usually also made of aluminum:
- Aluminum Profile Frame: Frames formed through an extrusion process, offering high strength, light weight, resistance to rust and deformation, ensuring stability even under high differential pressure.
- Aluminum Alloy Sheet: Sometimes, aluminum alloy sheets are used to create frames through bending processes.
The Efficiency of Metal Mesh Pre Filter
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40% – 65% Filtration Efficiency
The efficiency of currently available primary efficiency filters ranges from 40% to 65%, and they can be selected based on specific requirements. The rational selection of filter efficiency and face velocity contributes to comprehensive economic benefits.
Service Life of Filters
As dust accumulates on the filter media, the resistance increases. When the resistance reaches an unreasonable level, the filter must be discarded. Sometimes, excessive resistance can cause previously captured dust to become dislodged and re-enter the airflow; when this risk arises, the filter should also be replaced.
The resistance of a filter increases with higher airflow rates. By increasing the surface area of the filter media, the relative velocity of air passing through the filter can be reduced, thereby decreasing the resistance.
Wind Speed Relationship Diagram
Product Parameters
⚠ Remarks: (1) Initial resistance tolerance of ± 10% (2) Support customer size
Frequently Asked Questions (FAQ)
Q What are metal mesh pre-filters primarily used for?
Metal mesh pre-filters are primarily used for primary filtration to remove moisture, oil residue, and airborne contaminants from various industrial and commercial environments. They serve as the first line of defense in air filtration systems, protecting downstream filters and equipment.
Q What materials are used in metal mesh filters?
Metal mesh filters use no filter paper or chemical fiber materials. Their filtration function is achieved entirely through aluminum meshes of different structures and mesh counts, including plain weave, twill weave, and multi-layer composite aluminum mesh. The outer frame is typically made of aluminum profiles or aluminum alloy sheets.
Q What is the filtration efficiency range of metal mesh pre-filters?
The filtration efficiency of currently available metal mesh primary efficiency filters ranges from 40% to 65%. The appropriate efficiency level can be selected based on specific application requirements, and the rational selection of both filter efficiency and face velocity contributes to overall economic performance.
Q How do I know when it's time to replace a metal mesh pre-filter?
A filter should be replaced when the resistance (pressure drop) across it reaches an unreasonably high level due to accumulated dust. Additionally, if there is a risk that excessive resistance may cause previously captured dust to be dislodged and re-enter the airflow, the filter should be replaced immediately to maintain air quality.
Q What is the advantage of a multi-layer composite aluminum mesh structure?
The multi-layer composite aluminum mesh uses a sandwich structure of support layer, transition layer, and fine filtration layer. This design enables depth filtration with gradient pore sizes, resulting in extremely high dust-holding capacity and high filtration efficiency. The transition layer helps extend the overall service life of the filter by distributing the dust load more evenly.
Q Can metal mesh pre-filters be customized to specific sizes?
Yes, metal mesh pre-filters support customer-specified sizes. The aluminum frame structure — whether made from extruded aluminum profiles or aluminum alloy sheet bending — allows for flexible dimensional customization to meet different installation requirements. Please note that the initial resistance tolerance is ± 10%.