How to Choose an Industrial Oil Mist Collector

This article provides a comprehensive overview of various types of industrial oil mist collectors and their functionalities, focusing on aiding professionals in selecting the most suitable oil mist collector for CNC precision metal processing applications. Please read on and choose your oil mist collector.

Currently, oil mist collectors available on the market and manufactured by various companies can generally be categorized into four types: centrifugal, electrostatic, condensation-based, and explosion-proof.

1. Centrifugal Type:

   This type utilizes centrifugal technology, where the impeller rotates at high speed to create a vacuum negative pressure. The air containing oil mist is drawn into the collector through the inlet. Oil mist particles are first filtered by the primary filter, where liquid oil mist particles are filtered out and collected in an oil pan, forming the first filtration stage. The remaining aerosol particles are propelled by the impeller, coalescing into liquid phase droplets. These droplets are intercepted by the secondary filter, again collecting in the oil pan to form the second stage of gas filtration. Any remaining fine particles are captured through impact interception.

2. Electrostatic Type (ESP)

   Larger oil mist and dust particles are separated and collected in the oil pan. Polluted air containing fine oil mist and dust particles exits the pre-separator and enters the charged zone. Here, ions and electrons attach to the oil mist and dust particles (negatively charged particles adhere to negative ions and electrons, positively charged particles adhere to positive ions and electrons). Charged oil mist and dust particles exit the charged zone and enter the dust collection area. Under the influence of the electric field, charged oil mist and dust particles move towards oppositely charged electrodes, adhering to the electrode plates. Fine oil mist and dust particles are separated, and clean air is discharged through the fan into the atmosphere.

   
   

3. Condensation Type

   This type adopts a centrifugal structure, where a large amount of oil and smoke is sucked in by the fan and sent to a metal spiral mechanical filter, collecting on the filter. The pre-treated oil mist gas undergoes multiple filtrations through secondary filters before being discharged. Filtration can reach particles as small as 0.5 microns, allowing purified air to be recirculated indoors while separated oil is collected for reuse.

4. Explosion-proof Type

   Current explosion-proof CNC oil mist collectors also use a centrifugal structure. A significant amount of oil and smoke is sucked in by the fan and sent to a metal spiral mechanical filter, collecting on the filter. The pre-treated oil mist gas undergoes multiple filtrations through secondary filters before being discharged. Filtration can reach particles as small as 0.5 microns, allowing purified air to be recirculated indoors while separated oil is collected for reuse.

When choosing an oil mist collector, factors such as filtration efficiency, maintenance requirements, safety features, and compliance with industrial standards must be carefully considered to ensure optimal performance and safety in CNC metal processing environments. Collaborating with reputable manufacturers and suppliers can also provide valuable insights and support in selecting the right oil mist collector for specific industrial applications.