Rubber belt filter (BFR)
High-volume filtration of sedimenting media
The BHS rubber belt filter (type BFR) is a continuously operating, horizontal vacuum belt filter used for the efficient separation of sedimenting (incl. abrasive) solids. The individual filtrates are kept entirely separate to avoid cross-contamination.
An endless filter cloth with a continuous movement serves as the filter medium. A rubber belt is used to support the filter medium. The rubber belt is provided with milled grooves for filtrate discharge; it runs on a roller conveyor and on wearing and sealing belts over a stationary vacuum box, where the filtrates are collected and discharged.
The filter cake forms on top of the belt and can undergo further treatment by washing (co-current or counter-current), steaming, extraction or vacuum drying. The wash filtrates can be recovered individually from each process step and further processed without any cross-contamination. The belt filter discharges the filter cake at the discharge roller. The cloth is cleaned as the belt travels back.
Besides the standard open-frame design, we can offer the following optional versions of the vacuum belt filter:
- Closed hood over the entire filter
- Materials for special applications
- ATEX design
|Operating temperature||up to 90°C|
|Solids content (suspension)||up to 60 % (by weight)|
|Cake thickness||up to 80 mm|
|Grain size||10 - 500 μm|
|Filter output - suspension||up to 15 m³/m² h|
|Filter output - dry solids||up to 5,000 kg/m² h|
|Active filter surface||6 - 162 m²|