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Internal Rotary Drum Screen 1
Internal Rotary Drum Screen 2
Internal Rotary Drum Screen 3
Internal Rotary Drum Screen 4
Internal Rotary Drum Screen 5
Internal Rotary Drum Screen 6
Internal Rotary Drum Screen 7
Internal Rotary Drum Screen 8
Internal Rotary Drum Screen 1
Internal Rotary Drum Screen 2
Internal Rotary Drum Screen 3
Internal Rotary Drum Screen 4
Internal Rotary Drum Screen 5
Internal Rotary Drum Screen 6
Internal Rotary Drum Screen 7
Internal Rotary Drum Screen 8

Internal Rotary Drum Screen

IRDS internally fed rotary screen is the equipment for medium flow, medium low solid rate wastewater. It is compact-sized, completely closed and low malfunction machine, which is solid-liquid separation device for normal wastewater.

The cuneal or punched type filter can be choose with the machine, the most common aperture is 0.25~6mm. The drum screen is supported by four rotating wheels, and the horizontal rotation is driven by TEFC reducer, roller chain and sprocket.

The spray system is automatically sprayed with water. The one piece structure design, solid structure, the high quality stainless steel materials, to ensure that the equipment can long-term trouble-free operation, low energy consumption simple maintenance, reduce the process after the processing load.

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    Technical Data & External Dimensions

    IRDS Internally Fed Rotary Drum Screen Specification List

    Model Slot（mm) IRDS06-900 IRDS08-900 IRDS08-1200 IRDS08-1500 IRDS10-1500 IRDS10-1800 IRDS10-2100
    Dimensions Of Screen mm Φ600×900 Φ800×900 Φ800×1200 Φ800×1500 Φ1000×1500 Φ1000×1800 Φ1000×2100
    Treating capacity（m³/hr） 0.5 25 44 59 74 106 128 149
    0.75 43 76 102 127 182 219 255
    1 64 113 150 188 269 323 377
    1.5 97 170 227 284 407 488 570
    2 120 211 282 352 505 605 706
    Dimensions (L×W×H) m 1.7×0.95×1.21 1.8×1.15×1.46 2.1×1.15×1.46 2.4×1.15×1.46 2.4×1.35×1.71 2.7×1.35×1.71 3.0×1.35×1.71
    Influent Flange  DIN DN80 DN150 DN150 DN150 DN200 DN200 DN200
    Effluent Flange DIN DN150 DN200 DN200 DN200 DN250 DN250 DN250
    Spray Influent G G3/4" G1" G1" G1" G1" G1" G1"
    Solids Discharge  mm 137×250 137×300 137×300 137×300 137×400 137×400 137×400
    Net Weight kg 320 440 496 552 680 750 820
    Operation Weight kg 345 520 600 676 888 990 1100
    Power Kw 0.18 0.37 0.37 0.37 0.55 0.55 0.55

       IRDS Internally Fed Rotary Drum Screen Specification List

    Model Slot(mm) IRDS12-1800 IRDS12-2100 IRDS12-2400 IRDS14-1800 IRDS14-2100 IRDS14-2400 IRDS14-2700
    Dimensions of Screen mm Φ1200×1800 Φ1200×2100 Φ1200×2400 Φ1400×1800 Φ1400×2100 Φ1400×2400 Φ1400×2700
    Treating capacity(m³/hr) 0.50  166  194  221  206  240  275  309 
    0.75  285  332  380  354  413  472  531 
    1.00  420  490  560  522  609  696  783 
    1.50  636  742  848  790  921  1053  1184 
    2.00  788  920  1051  979  1237  1413  1590 
    Dimensions(L×W×H) 2.76x1.55x1.96 3.06x1.55x1.96 3.36x1.55x1.96 3.76x1.75x2.26 3.06x1.75x2.26 3.36x1.75x2.26 3.66x1.75x2.26 2.76x1.55x1.96
    Influent Flange DN200 DN200 DN200 DN200 DN200 DN200 DN200 DN200
    Effluent Flange DN350 DN350 DN350 DN350 DN350 DN350 DN350 DN350
    Solids Discharge 137×500 137×500 137×500 137×600 137×600 137×600 137×600 137×500
    Net Weight 927  1008  1089  1069  1163  1256  1350  927 
    Operation Weight 1215  1338  1465  1403  1549  1684  1838  1215 
    Power 0.75  0.75  0.75  1.10  1.10  1.10  1.10  0.75 

    Advantages of IRDS

    •Compared with the external inlet drum grating, the scum is removed from the end of the drum and does not enter the subsequent stages.

    •Compared with the external inlet drum grating, it is suitable for treating sewage with large amount of scum and complex type of scum, such as poultry, slaughtering, breeding and other wastewater.

    •Compared with the external inlet drum grating, slow speed, high stability, basically no wearing parts.

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    IRDS Rotary Drum Grille – Fibre Filtration Processes

    Internal Rotary Drum Screen 13
    COMPANY STRENGTH
    When the raw water containing fibre impact drum grille drum surface, much larger than the length of the mesh diameter of the fibre cannot pass through the perforated mesh surface, is retained in the drum body wall, with the rotation of the drum, through the end of the slag outlet.

    Close to the length of the mesh diameter fibres are mostly retained in the inner wall of the drum.
    Internal Rotary Drum Screen 14
    COMPANY STRENGTH
    There is a part of the probability of fibre perpendicular to the mesh, through the perforated mesh plate, the probability is not large, but reduce the fibre removal rate.

    There exists a part of the fibres smaller than the length of the mesh diameter, blocked by large fibres, are also retained in the inner wall of the drum, improving the fibre removal rate.
    D-1
    D-1
    In short, the choice of mesh diameter should be based on the length of the majority of fibres in the raw water accounted for a percentage of the decision, otherwise affect the fibre removal rate.

    Fibre Movement Processes

    01
    Being mesh plate retained fibres in the drum enrichment, enrichment fibre blocked part of the mesh, reducing the grille water capacity, in the drum grille selection of the early stage, will be in advance to take into account the clogging factor.
    02
    When the enriched fibre reaches a certain amount, with the rotation of the drum and the internal slag screw guidance, open the "snowball" mode, the fibre attached to the inner wall of the drum rolled into a "ball", with self-cleaning ability.
    03
    Part of the fibres stuck in the mesh or the gap, through the backwash nozzle cleaning, back into the drum, joining the "snowball" mode.
    04
    2/3 of the length of the drum is designed to be used for passing water and 1/3 for draining to ensure that the moisture content of the slag at the end is within a reasonable range.

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    DUBHE Co.Ltd. is a professional service in the sewage treatment market system equipment suppliers, engaged in various types of aeration, membrane, pump, blower, sludge dewatering machine, biological filler and other environmental protection equipment design and development, production and sales and international trade as one of the high-tech enterprises.
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