Indexing Belt Filter BF Gentle filtration of sedimenting media

  
Bandfilter
Brochure   -   Belt Filter


 The BHS Indexing Belt Filter is a continuously operating, horizontal vacuum filter which is used for the efficient separation of fast settling and also abrasive solids. The individual filtrates are kept separate to avoid cross-contamination.

An endless belt with a step-wise movement is the filter medium. Generally, the feeding is continuous. The vacuum trays are fixed in place. The filter cloth with the suspension moves in step fashion over the trays. To enable the movement, the vacuum is switched off shortly, allowing the belt to move one tray length forward. After this the vacuum is re-introduced and the filtration process continues.

The filter cake forms on top of the belt and can undergo further treatment by washing (co-current or counter current), steaming, extraction, suction drying or pressing. The wash filtrates can be recovered individually from each vacuum tray and further processed without any cross contamination. The filter cake is discharged at the end roller. The cloth is cleaned as the belt travels back.

  
Besides the open-frame design, we can offer the following optional versions:

  • closed hood over the entire filter
  • closed box
  • gas- and pressure-tight box
  • pharmaceutical design
  • pneumatic, hydraulic or electric drive options
  • materials for special applications
  • ATEX design
  • belt filter with continuously moving belt

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    Process criteria
  • Operation
    		•  continuous
  • Operating pressure
    		•  vacuum
  • Operating temperature
    		•  up to 90 deg. C
  • Solids content (supension)
    		•  up to 60% (wt.)
  • Cake thickness
    		•  up to 170 mm
  • Particle size
    		•  1-100 microns
  • Filtration capacity - suspension
    		•  0,1-5,0 m³/m²h
  • Filtration capacity - dry solids
    		•  50-1.000 kg/m²h
  • Filter area
    		•  0,1-100 m²
    		 
    Benefits
  • continuous, fully automatic operation
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  • closed and gas-tight production
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  • stationary vacuum trays
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  • high process versatility
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