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 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 suction drying. The wash filtrates can be recovered individually from each process step 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
- Materials for special applications
- ATEX design
- A rubber belt filter operating as a continuous, horizontal vacuum belt filter
Process criteria:
| Mode of operation | continuous |
|---|---|
| Operating pressure | vacuum |
| Operating temperature | up to 120 °C |
| Solids content (suspension) | up to 60% (weight) |
| Cake thickness | up to 100 mm |
| Particle size | 10 - 500 μm |
| Filtration capacity (suspension) | up to 15 m³/m² h |
| Filtration capacity (dry solid) | up to 5,000 kg/m² h |
| Active filter area | 6 - 162 m² |
