China G2 Metal Mesh Pre-Air Filter - High Efficiency Suppliers & Factory with Aluminum and Stainless Steel Frame
βΒ Metal Mesh Pre-filters are widely used in Primary Filtration to remove Moisture, Oil Residue, or contaminants from various environments.
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:
π Description: The most common weaving method, where warp and weft wires are interwoven in an over-and-under pattern, forming square openings.
β‘ Features: Stable structure, high strength, and relatively low cost.
π§ Applications: Often used as a support layer in filters or for primary filtration where high filtration precision is not required.
π Description: The warp and weft wires are interwoven at a higher density, resulting in smaller mesh openings, and the wire diameter may be thicker.
β‘ Features: Higher filtration precision than plain weave, greater dust-holding capacity, while maintaining good strength.
π§ Applications: Serves as the main filtration layer in filters, used to capture smaller particles.
π 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).
π Structure: Typically a sandwich structure of "Support Layer + Transition Layer + Fine Filtration Layer."
πΈ 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.
πΊ 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.
πΉ Transition Layer: Positioned between the two, with gradually varying mesh counts to achieve gradient filtration, effectively extending the filter's service life.
β‘ Features: Enables depth filtration, with extremely high dust-holding capacity and high filtration efficiency.
To maintain the structural strength of the filter, its outer frame is usually also made of aluminum:
π§ 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.
π§ Aluminum Alloy Sheet: Sometimes, aluminum alloy sheets are used to create frames through bending processes.
β As dust accumulates on the filter media, the resistance increases. When the resistance reaches an unreasonable level, the filter must be discarded.
β 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.
π 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.
