Design and construction
Due to its cylindrical shape the drum screen can handle large differences in water level.
The Hubert drum screens are designed with patented A-shape spokes resulting in high rigidity and resistance to deformation.
This produces an accurate fit against pit walls, enabling filtration of particles down to 2 mm.
Drum screens are available in coated or stainless steel.
All Hubert rotary drum screens are equipped with maintenance free slide bearings.
The same applies to the ring gear and drive pinion, witch are made of a special wear resistant polyamide.
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Hubert drum screens are available for different flow patterns.
These may be:
- A-shaped spoke see fig. 1,2,3, or 4.
Flow patterns
Design with A-shape spoke.
Rotary drum screens of the A-spoke design can be supplied in diameters of 5 to 16 meters with widths varying between 2 and 5 meters. Screen mesh ranges from 2 to 10 mm at a capacity of 5.000 to 165.000 m3/h and level differential pressure of 1 m.w.c. (higher level differential pressure on special request).
Advantages
- Large flow capacities.
- Light, stable and ridged construction through A-spoke construction.
- Reliable.
- Almost maintenance free.
- Long lifetime. (30 years and more)
- Resistant to water with fine sand.
- Debris is removed at or above deck level, eliminating the need for a debris pump.
- Less capital spares.
Process Data Sheet
Diameter |
Width 2000 |
Width 2500 |
Width 3000 |
Width 3500 |
Width 4000 |
mm |
5000 |
22000 |
36000 |
|
|
|
m3/h |
7000 |
38000 |
47000 |
58000 |
67000 |
72000 |
m3/h |
9000 |
|
60000 |
72000 |
85000 |
97000 |
m3/h |
11000 |
|
|
83000 |
100000 |
117000 |
m3/h |
13000 |
|
|
|
119000 |
135000 |
m3/h |
14000 |
|
|
|
137000 |
157000 |
m3/h |
16000 |
|
|
|
|
165000 |
m3/h |
Screen mesh 5 x 5mm.
Wire diameter 1mm.
Top of drumscreen 1500mm above deck level.
Waterlevel in the centre of the mainshaft of the drum.
(50% submersion)
