BHS-Sonthofen GmbH

BHS Rotary Pressure Filter (RPF)

The BHS rotary pressure filter (type RPF) is a continuously operating filter for pressure filtration, allowing gas-tight cake treatment in several separate process steps. The cake can be discharged under atmospheric conditions.

The rotary pressure filter makes a large number of process steps possible during one drum revolution. After the suspension has been separated into filtrate and filter cake, the rotary pressure filter additionally enables the following operations:

• Displacement washing, counter-current washing, closed-cycle washing
• Mechanical or thermal cake dewatering
• Reslurrying
• Single- or multi-stage cake washing
• Solvent exchange
• Steaming and extraction

All process steps are performed in separate segment zones inside the filter. This allows filtrates and other fluids to be drained off separately.

BHS Rubber Belt Filter (BFR)

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.

Besides the standard open-frame design, we can offer the following optional versions of the vacuum belt filter:

• ATEX design
• Closed hood over the entire filter
• Materials for special applications

BHS Indexing Belt Filter (BF)

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.

Besides the standard open-frame design, we can offer the following optional versions of the vacuum belt filter:

• ATEX design
• Closed box design
• Closed hood over the entire filter
• Gas- and pressure-tight box design
• Materials for special applications
• Pharmaceutical version
• Pneumatic, hydraulic or electric drive options

BHS Pressure Plate Filter (PF)

The BHS pressure plate filter is a batch-operated filter with plate-shaped filter elements arranged one above the other inside a pressure vessel. The filter cake builds up on the filter plates. The clear filtrate is discharged inwards through the hollow shaft. All the process steps are carried out under pressure. Cake discharge is accomplished by vibration of the filter elements.

The filter is used primarily for cake-forming solid-liquid separation of suspensions with a low solids content that are moderately or extremely difficult to filter. It is also suitable for adsorptive filtration (as a deep bed or precoat filter). The BHS pressure plate filter is frequently used for clarifying filtration. The plate filter is a compact unit, operates fully automatically and allows high throughput rates. Vibration discharge requires very little energy consumption. Furthermore, there is no longer any need for the complicated shaft system and seals through the pressure vessel.

BHS also manufactures complete pressure plate filter installations including fittings, instrumentation, piping, pumps, tanks, skids and control systems. The plants have a modular design for easy transport and assembly.

BHS Candle Filter (CF)

The BHS candle filter (type CF) is a fully automatic, batch-operated filter with filter elements arranged vertically inside a pressure vessel. It is used for clarifying liquids with a low solids content. The candle filter is a compact unit, allowing high throughput rates, dry cake discharge and a wide range of cake treatment options. 

BHS also provides complete candle filter installations including fittings, instrumentation, piping, pumps, tanks, skids and control systems. The plants have a modular design for easy transport and assembly.