The specialists for environmental technology

Functional principal:

The FSM sludge screen consists of a cylindrical, enclosed tube inside which a screen with screw inside it is installed.
Via an inlet flange, the liquid to be screened is added into the screen under pressure. The machine may thus also be integrated into the pipework.

The machine is subdivided into the functional areas of screening, compression/dewatering and discharge.
Material held back by the screen is conveyed through a screw conveyor into the compression and dewatering zone.
Washing water or re-rinsing for cleaning the screen is not required.
At the end of the compression and dewatering zone, a cone reduces the size of the outlet cross-section. Through the cone, the counterpressure for the compression and dewatering of the material is achieved. The cone can be displaced axially and is run pneumatically.
The counterpressure and/or the cross section through which the material can get into the discharge region is therefore variable.
The perforation of the screen and the design of the discharge area may be adapted individually to the needs and conditions that our customers are faced with.

Feature:

• High throughputs due to pressurised screening
• Can also be used for highly-viscous sludges or those containing grease
• High level of dewatering of the screening by counterpressure cone
• High operational safety due to robust construction
• If the screw has become worn, this can be readjusted
• Reinforced coils reduce wear, particularly when used with abrasive media
• Increase in operational safety and reduction of maintenance required in the subsequent sludge treatment, such as inspissation, disinfection, stabilisation, dewatering and drying
• Low maintenance of the machine required
• Reliable cleaning of the screening surface without additional industrial water
• Machine completely hygienic with odour encapsulation

Dimensions:

Throughput power    up to 110 m³/h sludge and 150 m³/h process water

Perforation     1-10 mm, other perforations on request

Angle of installation    Horizontal

Dewatering    Dewatering the screening to up to 45% DS   

Material/makes:

Machine frame    Stainless steel 1.4301 or 1.4404, other materials on request

Screen element    Stainless steel 1.4301 or 1.4404, other materials on request

Drives    Geared motor, make: SEW