Oil Mist Filtration (OF Range)

Oil Mist Filtration (OF Range)

The oil mist filter range is ideal for the filtration of oil and emulsion mist created through metal cutting processes such as lathe turning, milling, drilling, wet grinding and spark suppression (not oil fumes)

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DESCRIPTION

The oil mist filter is used for the filtration of oil and emulsion mist created through metal cutting processes such as lathe turning, milling, drilling, wet grinding and spark suppression (not oil smoke). The oil mist filter is built in accordance with the modular principle. The system can therefore easily be expanded with additional modules to suit expansion.

The filter is available with or without a fan. The filter is very user-friendly and requires little maintenance. All filters feature easy to read pressure drop meters as the standard for every filter unit, these will show when it is time to change the filter. All filters are equipped with an outlet for drainage. The oil can be fed back to the machine or collected in a container.

The unit can be used together with control equipment with motorised dampers and automatic controls, which serve to optimise filtration. The cleansed air can be returned back to the facility which saves further heat energy in replacing the displaced air.

APPLICATIONS

Oil mist is usually comprised of large particles consisting of drops of oil or water emulsion. Oil mist is generated when the coolant is sprayed on rotating parts during lathing, milling and drilling in metal.

FILTER EFFICIENCY

  • The oil mist filter delivers a very high rate of filtration due to the combination of effective pre-filter and a HEPA filter as an end filter.
  • The first filter separates large particles and droplets.
  • The second filter separates out the majority of the oil mist.
  • The third filter, which is a so-called HEPA filter, separates out the finest particles.
  • The air can usually be re-circulated into the workshop facility.
  • The total level of separation for the OF filter is >99%.
  • A HEPA filter cartridge is included as part of the standard delivery.

OPERATIONS AND MAINTENANCE

  • Minimal maintenance is required due to the unit's clever design with self-draining filter cartridges.
  • The filter is equipped with a pressure meter that indicates the status of every filter cartridge.
  • The filter is usually changed after 1-2 years of operation.

SYSTEMATIC DRAWING

Oil mist filter can be connected to a lathe equipped with an automatic damper. The fan’s rotational speed is adjusted by a pressure sensor and a frequency converter. This type of control makes it possible to maintain an airflow from the lathe (m/s) with the door closed approx. 0.5m/s in the opening with the door open. A switch in the lathe door sends a signal to the control unit (S-400) to open or close the motorised damper (SAS-160) and to send a signal to the frequency con¬verter, which by means of a pressure sensor (ST-300 detects the pressure change in the duct and raises or lowers the rotational speed of the fan.

This design solution helps increase the service life of the filter and also saves energy because the fan’s rotational speed is adapted to suit the door operation. 

When the filter is equipped with a HEPA filter, the air can re-circulate into the facility, resulting in additional energy savings.

All models (with the exception of Mobi-Oil) are available with or without an integrated fan.


HOW THE OIL MIST FILTER WORKS

  1. Inlet. Optionally left or right.
  2. Base filter. Fibreglass filer with aluminium separators EU5. Should be replaced at a pressure of 500 Pa.
  3. Fine filter. Fibreglass filter with aluminium separators EU9. Should be replaced at a pressure of 500Pa.
  4. HEPA filter H13. Filtration level greater than 99%, not washable but easily replaceable. Should be replaced at a pressure of 800 Pa. 
  5. Fan
  6. Drainage left or right.


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