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Mechanically Raked Screen

Mechanically Raked Screen Featured Image
  • Mechanically Raked Screen
  • Mechanically Raked Screen

Short Description:

HLBF Mechanically Raked Screen (also called coarse screen) is mainly suitable for drainage pumping stations with large flow, rivers, water inlets of large hydraulic pumping stations, etc. It is used to intercept large pieces of solid floating debris in the water to ensure smooth water flow. The screen adopts the back-drop and rotary chain type, and the water-passing screen surface is composed of a toothed rake plate and fixed bars. When sewage flows through, debris larger than the screen gap is intercepted, and the rake teeth of the toothed rake plate penetrate into the gap between the bars. When the driving device drives the traction chain to rotate, the rake teeth carry the debris trapped on the screen surface from bottom to top to the slag outlet. When the rake teeth turn from bottom to top, the debris falls off by gravity and falls into the conveyor from the discharge port, and then is transported out or further processed.

Product Detail

Product Tags

Product Features

1. The drive device is directly driven by a cycloidal pinwheel or helical gear motor, with low noise, tight structure, and smooth operation;
2. The rake teeth are bevel-tipped and welded to the horizontal axis as a whole, which can pick up larger garbage and debris;
3. The frame is an integral frame structure with strong rigidity, easy installation, and less daily maintenance;
4. The equipment is easy to operate and can be directly controlled on-site/remotely;
5. To prevent accidental overload, mechanical shear pins and overcurrent dual protection are provided to ensure safe and reliable operation of the equipment;
6. A secondary grille is set at the bottom. When the tooth rake moves from the back of the main grille to the front side, the secondary grille automatically fits with the main grille to prevent the short circuit of the water flow and the flow of suspended debris.

Technical Parameters

Model

HLBF-1250

 HLBF-2500 HLBF-3500 HLBF-4000 HLBF-4500 HLBF-5000

Machine width B(mm)

1250

2500

3500

4000

4500

5000

Channel width B1(mm)

B1=B+100

Mesh size b(mm)

20~150

Installation angle

70~80°

Channel depth H(mm)

2000~6000

(According to customer ‘s requirement.)

Discharge height H1(mm)

1000~1500

(According to customer ‘s requirement.)

Running speed(m/Min)

Around 3

Motor power N(kW)

1.1~2.2

2.2~3.0

3.0~4.0

Civil engineering demand load  P1(KN)

20

35

Civil engineering demand load  P2(KN)

20

35

Civil engineering demand load  △P(KN)

2.0

3.0

Note: P1(P2) is calculated by H=5.0m,for every 1m H increased,then P total=P1(P2)+△P

Dimensions

hh3

Water Flow Rate

Model

HLBF-1250

 HLBF-2500 HLBF-3500 HLBF-4000 HLBF-4500 HLBF-5000

Water depth before screen H3 (mm)

3.0

Flow rate (m/s)

1.0

1.0

1.0

1.0

1.0

1.0

Mesh size b

(mm)

40

Flow rate  (l/s)

2.53

5.66

8.06

9.26

10.46

11.66

50

2.63

5.88

8.40

9.60

10.86

12.09

60

2.68

6.00

8.64

9.93

11.22

12.51

70

2.78

6.24

8.80

10.14

11.46

12.75

80

2.81

6.30

8.97

10.29

11.64

12.96

90

2.85

6.36

9.06

10.41

11.70

13.11

100

2.88

6.45

9.15

10.53

11.88

13.26

110

2.90

6.48

9.24

10.62

12.00

13.35

120

2.92

6.54

9.30

10.68

12.06

13.47

130

2.94

6.57

9.36

10.74

12.15

13.53

140

2.95

6.60

9.39

10.80

12.21

13.59

150

2.96

6.63

9.45

10.86

12.27

13.65
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