Chain Screen
Chain Screen
The DCI bar screen is a mechanical fully automatic screen used for liquid/solid separation in the pre-treatment stage of wastewater treatment plants, pumping station …
This very particular screen can be used as a coarse screen using grids but also as a fine screen or sieving system by using perforated plates or wedge wire type grid.
• Rake & chain driven screen
• Mounting position : inclination 60°
• Fineness of screening from 0,50 to 50 mm
• High capacities up to 3500 m³/h
• Very low maintenance, no critical parts in contact with water and small space constraints
• Material : stainless steel 304L (available in stainless steel 316L)
• Automatic operation
• Smart, sturdy & safe design – no risk of blocking
• Very wide range of application – easily convertible from coarse screen to fine screen
Operation Principals
The inclined bar screen starts and stops automatically according to the water level difference betweenupstream and
downstream by means of level sensor or by timer lock. The bar screen includes a screen frame, a bar rack (grid) a back dead plate, a series of chain driven rakes and a drive unit. All bearings and critical parts are above liquid level at all times to facilitate lubrication and improve machine life. The number of rakes depends on the screen length and type of effluent.When the screen is started, the 2 chains on the sides pulls the rakes towards the top of the screen. When passing in between the bar rack, the rakes collect the screenings waste and lift them to the top where an ejector system pushes the screenings waste into the conveying or compacting system. A back dead plate prevents the screenings to fall down on their upraise.The heavy duty chain type has been selected for long life, maintenance free and prevents from any blocking as it is never tensioned. The screen is fully covered and the height of the bar rack can be adapted to any requirement. The rakes are easily replaceable and guided by means of HDPE blocks on the side.
Bar Spacing : 10 to 80 mm
Discharge height : maximum 17 000 mm
Channel height : 1 000 to 16 000 mm
Channel width : 450 to 1 500 mm
Treatment capacity : up to 8 000 m3/h depending on fineness of screening
Compact , Reduced maintenance , Automatic working
Frame : stainless steel 304L or 316L