Screw Screen
Model SS-mK or SS-oK [-mK denotes with compaction and –oK without compaction]
The screw screen provides screening of solids from raw sewage or from wastewater in industrial applications. The screw screen is designed for installation in a concrete channel. As standard the system includes compaction of screenings and washing in the compaction zone.
The compactor, located at the end of the transport section of the screw, carries out the compaction and dewatering of screenings to reduce the weight and volume of captured screenings.
ADVANTAGES
- Low maintenance and low initial investment
- Self-cleaning with brushes fitted on the screw
- High solids removal efficiency
- Up to 50% reduction in volume & weight of screenings after compaction
- Transport section: tubular or U-section
- Transport section: longer/shorter lengths available
MANUFACTURING FEATURES
- Inlet flow rate; up to 1,250 m3/h
- Screen element options;
- Rounded holes 3-10mm
- Wedge wire 0.25-3mm
STANDARD SPECIFICATIONS
| Parameter |
Units |
SS-mK-110 |
SS-mK-160 |
SS-mK-260 |
SS-mK-390 |
SS-mK-610 |
SS-mK-830 |
SS-mK-1000 |
| Treatment capacity*1 |
With rounded holes (mm) |
Ø3 |
m3/h |
80 |
122 |
158 |
320 |
502 |
690 |
865 |
| Ø4 |
93 |
137 |
218 |
360 |
528 |
756 |
920 |
| Ø5*2 |
108 |
158 |
259 |
390 |
612 |
830 |
1,000 |
| Ø6 |
126 |
164 |
288 |
430 |
630 |
850 |
1,070 |
| Ø7 |
137 |
183 |
310 |
468 |
730 |
905 |
1,160 |
| Ø10 |
158 |
194 |
333 |
495 |
790 |
970 |
1,250 |
| With wedge wire (mm) |
0.25 |
17 |
34 |
75 |
115 |
180 |
220 |
290 |
| 0.5 |
45 |
64 |
95 |
170 |
300 |
340 |
385 |
| 1 |
50 |
81 |
135 |
252 |
350 |
430 |
590 |
| 2 |
85 |
100 |
145 |
303 |
430 |
580 |
785 |
| 3 |
112 |
125 |
187 |
340 |
505 |
730 |
900 |
| Dimensions |
W - Channel min/max |
mm |
300/477 |
358/542 |
470/620 |
570/718 |
740/888 |
875/975 |
1,065/1,167 |
| H |
35˚ |
410 |
420 |
430 |
550 |
660 |
800 |
860 |
| 45˚ |
515 |
535 |
540 |
705 |
838 |
985 |
1,050 |
| A*3 |
5,124 |
5,124 |
5,124 |
5,124 |
6,040 |
6,040 |
7,840 |
| B |
4,075 |
3,975 |
4,044 |
3,990 |
4,512 |
4,510 |
4,680 |
| C |
3,040 |
2,990 |
3,035 |
2,980 |
3,735 |
3,770 |
3,650 |
| D |
800 |
800 |
800 |
800 |
1,000 |
1,000 |
1,000 |
| S |
1,500 |
1,500 |
1,500 |
1,500 |
1,500 |
1,500 |
1,500 |
| Installed motor power |
kW |
0.75 |
0.75 |
0.75 |
0.75 |
0.75 |
0.75 |
1.1 |
| Screw gear reducer speed |
rpm |
11 |
11 |
11 |
11 |
8 |
8 |
8 |
|
Washwater
Screen basket / compaction zone (at 3 bar)
|
L/min |
23/31 |
23/31 |
23/31 |
23/31 |
62/44 |
62/44 |
78/56 |
| Empty weight (standard length) |
kg |
300 |
318 |
325 |
350 |
608 |
642 |
1,100 |
*1Theoretical, calculated using clean water, *2Standard screen type & aperture, *3Transport section can be lengthened or shortened, which will affect other dimensions.
STANDARD INCLUSIONS + OPTIONS
| Equipment |
Standard Supply |
Optional Supply |
| Screw screen |
Rounded holes screen element |
Ø5mm aperture |
✓ |
- |
| Custom aperture (3, 4, 5, 6 ,7 or 10mm) |
- |
✓ |
| Wedge-wire screen element (0.25, 0.5, 1, 2 or 3mm) |
- |
✓ |
| Integrated screenings compaction (can be deleted as an option) |
✓ |
- |
| Screen basket cleaning, bolted nylon brushes |
✓ |
- |
| PE pipe for returning liquid from compaction zone |
✓ |
- |
| Squared outlet spout |
✓ |
- |
| Bolted screenings compaction system cover |
✓ |
- |
| Lifting eyebolts |
✓ |
- |
| Nord drives with compact motor gearbox and cover guard |
✓ |
- |
| Machine carpentry, drive guard and anti-wear materials on screw |
SS304, bolts A2 |
✓ |
- |
| SS316, bolts A4 (recommended for coastal and corrosive environments) |
- |
✓ |
| Screw |
High-carbon steel painted |
✓ |
- |
| SS316L |
✓ |
- |
| Lengthen or shorten the standard screw transport section |
- |
✓ |
| Washing |
Compaction zone only, with ½” manual valve |
✓ |
- |
| Compaction zone with ½” manual valve and screening basket with 1” manual valve |
- |
✓ |
| Manifold for compaction zone and screening basket, with 1” manual valve |
- |
✓ |
| Automatic Longopac bagging system for screenings with 1x 80m long bag |
- |
✓ |
| Drive motor premium efficiency |
IP55 |
✓ |
- |
| IP65 with thermistor overload protection |
- |
✓ |
| Surface treatments*1 |
✓ |
- |
*1 Stainless steel parts: stripping with acid solution, passivation with glass particles, final surfaces cleaning with anti-dust oil. Carbon steel parts: sandblasting SA 2.5 for external anti-rust paint RAL 5015
| Instrumentation & Controls |
Standard Supply |
Optional Supply |
| Safety limit switch for compaction zone opening hatch |
|
- |
✓ |
| Level sensor, supplied loose for channel installation |
Conductive probe |
- |
✓ |
| Ultrasonic |
- |
✓ |
| Solenoid valve kit(s) for selected washing system(s) 24VDC |
- |
✓ |
| Mechanical over-torque protection (backlash free-ball model) |
- |
✓ |
| Control panel to AS/NZ 3000, for external installation |
- |
✓ |
