Cartridge Dust Collector: Filter Precision and Efficiency

Customers often ask: What is the filtration efficiency of your equipment? And what is the filtration precision? Today, let's explore these two concepts. The filtration precision and efficiency of a cartridge dust collector are core indicators to measure its performance, which directly affect the dust removal effect and the compliance level of emissions.

I. Core Metrics of a Cartridge Dust Collector

First, filtration precision refers to the smallest dust particle size (in μm) a cartridge dust collector can reliably trap. A lower value means better capture of fine dust.

Second, filtration efficiency shows the percentage of specific-sized dust particles the cartridge dust collector can block. For example, 99.99% efficiency means only 1 in 10,000 particles passes through.

To measure this, the industry uses a standard test. It involves feeding air with a known amount of ISO test dust into the cartridge until the device reaches its service life (judged by "resistance"). Then, efficiency is calculated by comparing collected dust weight to total input.

II.Common Types of Cartridge Dust Collector Filters

Ordinary polyester fiber filters work well for scenarios like sandblasting or wood processing. They handle 5~10 μm particles with 99.9% efficiency for those above 5 μm.

For welding fumes or pharmaceuticals, film-coated polyester filters are better. They target 0.3~5 μm particles, achieving 99.99% efficiency for those above 0.3 μm.

High-efficiency film-coated filters, such as PTFE or nano-film types, excel in laser cutting or electronics manufacturing. They reach 0.2~0.3 μm precision with ≥99.99% efficiency for particles above 0.3 μm.

III.Factors Boosting Cartridge Dust Collector Performance

First, filter material technology matters. Advanced coating and nanofiber layers enhance both precision and efficiency.

Next, structural design plays a role. A 33mm pleat width, for example, increases filtration area (10–12㎡ per cartridge), reducing pressure drop. Good sealing (like galvanized frames with EPDM gaskets) prevents dust leakage.

Finally, surface treatments add value. Antistatic handling (with conductive fibers) avoids explosion risks. Waterproof and oil-resistant coatings (using fluororesins) reduce dust buildup, keeping efficiency steady.

In summary, a cartridge dust collector’s performance hinges on precision and efficiency. Precision sets the smallest dust size it can handle (0.3μm is current state-of-the-art), while efficiency determines real-world trapping power (up to 99.99% for film-coated models).