Description
Externally Fed Drum Screens Description
Externally-fed Rotary Screens have slotted wedgewire, cylindrical drums that rotate on two pillow block bearings. The screen slot openings range from 0.010 to 0.100 inches. The rotary drum is driven by a SEW/NORD motor fi tted to a shaft-mounted gearbox. It has three methods of maintaining clean screen openings. The doctor blade scrapes the solids from the face of the screen surface. The fi ltrate back washes while exiting the bottom of the screen and a shower on an automatic cycle washes the screen drum from inside. The ideally suited for effl uents containing high oil or grease loadings.
Externally Fed Drum Screens How does it work?
The DRUM SCREEN executes fine micro-screening and is installed upstream of small and medium-sized purification plants. The flow of the suspension for screening meets the surface of the rotary screen perpendicular to the direction of the hole between the bars. While the filtered liquid passes through the holes of the screen and is discharged into a tank under the cylinder, the solids are trapped on the surface of the same screen and are drawn by rolling friction to a spillway blade that diverts them to a special container. The bars of the cylinder are wedge-shaped, permitting the uninterrupted flow of hydraulic pressure and minimizing the risk of solids sticking and causing obstruction.
Externally Fed Drum Screens Model
| Technical Table | ||||||||||
|
DDS Model |
Drum size | Physical Dimensions(m) | Power |
Weight (Kg) |
Capacities(m3/h) | Sludge height | ||||
| mm | L | W | H | KW | 1mm | 2mm | 3mm | mm | ||
| IRD6-900 | Ø600x900 | 1900 | 1350 | 1700 | 0.55 | 630 | 15 | 25 | 30 | 500 |
| IRD6-1200 | Ø600x1200 | 2200 | 1350 | 1700 | 0.55 | 820 | 30 | 50 | 60 | 500 |
| IRD6-1500 | Ø600x1500 | 2500 | 1350 | 1700 | 0.75 | 1000 | 45 | 70 | 85 | 500 |
| IRD6-1800 | Ø600x1800 | 2800 | 1350 | 1700 | 0.75 | 1160 | 60 | 100 | 120 | 500 |
| IRD6-2100 | Ø600x2100 | 3100 | 1350 | 1700 | 1.1 | 1300 | 80 | 135 | 170 | 500 |
| IRD9-1200 | Ø900x1200 | 2300 | 1600 | 2200 | 1.1 | 1200 | 40 | 70 | 85 | 600 |
| IRD9-1800 | Ø900x1800 | 2900 | 1600 | 2200 | 1.1 | 1470 | 80 | 135 | 170 | 600 |
| IRD9-2500 | Ø900x2500 | 3600 | 1600 | 2200 | 1.5 | 1800 | 120 | 200 | 250 | 600 |
| IRD9-3000 | Ø900x3000 | 4100 | 1600 | 2200 | 1.5 | 2100 | 160 | 270 | 350 | 600 |
Externally Fed Drum Screens Feature
sewage treatment plants
vegetable, fruit and potato processing industry
sugar industry
meat and poultry processing
fish and shellfish processing industry
brewing, malting and beverage industry
horticulture industry
Industrial process water
zoos
textile industry / laundries
paper and pulp industry
tanneries
waste recycling industry
bioenergy industry
drinking water plants, etc.
exhaust gas cleaning
Rotary drum screen water treatment Application
sewage treatment plants
vegetable, fruit and potato processing industry
sugar industry
meat and poultry processing
fish and shellfish processing industry
brewing, malting and beverage industry
horticulture industry
Industrial process water
zoos
textile industry / laundries
paper and pulp industry
tanneries
waste recycling industry
bioenergy industry
drinking water plants, etc.
exhaust gas cleaning
