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| Indexing belt filter (BF)
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Gentle filtration of sedimenting media
The BHS indexing belt filter (type BF) is a continuously operating, horizontal vacuum filter used for the efficient and also gentle separation of sedimenting solids from suspensions. Through various process steps, the filter cake forming on top of the belt can undergo diverse treatments. As a result, the filtrates can be individually recovered and processed. The BHS belt filter thus offers very high process versatility.
An endless belt with a stepwise movement is the filter medium. Feeding of the suspension is usually continuous. The vacuum trays are fixed in place on the frame. The filter cloth with the suspension moves stepwise over the trays. Each time the cloth stops, the filtrate is sucked downwards. Then the vacuum is switched off. This releases the filter cloth, which can be advanced again.
The filter cake forms on top of the belt and can undergo further treatment by washing (co-current or counter-current), reslurrying, steaming, extraction, vacuum 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 discharge roller. The cloth is cleaned as the belt returns.
Design variants
Besides the standard open-frame design, we can offer the following optional versions of the vacuum belt filter:
Closed hood over the entire filter
Closed box design
Gas- and pressure-tight box design
Pharmaceutical version
Pneumatic, hydraulic or electric drive options
Materials for special applications
ATEX design |
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