Air compressor oil-gas separator filter element

A filter device used to separate oil and dust from compressed air. The oil-gas separator filter element of an air compressor is a core component of the compressed air purification system. It mainly uses micron-sized glass fiber filter media to intercept and filter suspended oil particles. Its working principle involves interception, diffusion, and aggregation to agglomerate small oil droplets into larger droplets, which are then recycled through the oil return system. The filter element's performance directly affects the compressed air quality and equipment operating efficiency. It is necessary to select either an internal or external type based on the air compressor model and replace it regularly to avoid excessive pressure differential leading to increased energy consumption.
Working Principle: Filtration, condensation, and separation
Main Function: Removal of oil, dust, and liquids
Filter Cartridge Type: Dual type (internal/external)
Common Models: 4900050101 series
Material Standard: Micron-level glass fiber filter media
Working Principle

1. Primary Separation: Compressed air from the air compressor carries oil droplets of varying sizes into the oil-air separator. Larger oil droplets settle naturally due to gravity.

2. Fine Filtration: Suspended oil particles smaller than 1μm in diameter are intercepted by diffusion and inertial collisions as they pass through the fiberglass filter media, gradually coalescing into larger oil droplets.

3. Recovery and Recycling: The coalesced oil droplets settle to the bottom of the filter layer and are returned to the lubrication system for reuse through the oil return pipe, ultimately outputting clean compressed air.
Structural Characteristics

Filter Media Selection: The use of glass fiber layers with specific diameters and thicknesses directly affects filtration accuracy and airflow resistance.

Differential Pressure Control: Accumulation of solid particles in the filter media leads to an increase in differential pressure; differential pressure monitoring is necessary to determine the replacement cycle.
Maintenance Requirements: Built-in filter elements are typically integrated with the oil-gas separator, while external filter elements require independent installation. The specific type depends on the air compressor model. The filter element replacement cycle is related to the intensity of air compressor use; delayed replacement may increase energy consumption by 15%-20% and shorten equipment lifespan.
Gu'an County Xinhuida Filter Co., Ltd. 2023/2/1