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Drum Filters

Filtering, Washing and Dewatering of a Wide Range of Products

The modern BOKELA drum filters represent a new generation of continuous vacuum drum filters. They are used for filtration, washing and dewatering of very different products. The different designs and numerous auxiliary components enable an ideal adaptation of the filter to the individual product and process conditions. The most widespread vacuum filters are used in all the industries, from the chemical one to the extractive one. This is possible by:

  • filtration area of 0.5 to 125 m²
  • models with closed drum
  • models with single cell design, i.e. exchangeable filter cells (for filter of up to 7m²)
  • numerous methods of cake discharge:
    • compressed air blow back
    • roller discharge
    • discharge knife (for precoat filters)
  • different systems of cake washing
  • additional items like wash hood, steam hood, press belt, complete enclosure
  • numerous materials of construction available


Top Performance for Challenging Applications

BOKELA drum filters have an outstanding hydraulic design and so offer economical solutions for demanding applications of the process filtration. They are characterised by:

  • optimal cake washing in up to 3-step counter-current wash
  • sharp filtrate separation
  • high filter speed of up to 3rpm
  • 50 to 75% higher throughput rates compared to conventional drum filters
  • low residual cake moisture
  • complete cake discharge even at high filter speed
  • clear filtrate
  • outstanding cloth lifetime
  • high availability and flexibility
  • simple maintenance
  • innovations like:
    • single cell design, i.e. exchangeable filter cells
    • easily adjustable process zones
    • FrameTrakTM system – an innovative method of cloth fixing for both drum and pan filters


© 2011 BOKELA GmbH Karlsruhe, Germany