Product overview:
The river grating decontamination machine is a coarse grating, also known as rainwater grating, or rotary grating machine. It is a large coarse grating equipment used to remove heavy solid suspended solids in water body. This device can continuously remove solid suspended solids in liquid. It has reasonable design, simple structure, safe and reliable operation and high degree of automation. It can be widely used in urban sewage treatment, water intake of waterworks and rainwater pump station, Large flow water treatment places such as cooling water intake of power plant. The equipment structure refers to the advantages of the rotary grid trash remover and adopts a different working principle, that is, the rake tooth chain makes a rotary movement in front of and behind the grid. When the rake tooth runs to the upstream surface of the grid bar, it is inserted into the gap of the grid bar and makes a cleaning action from bottom to top. The rake tooth chain is closed to prevent the invasion of sundries and make the equipment run smoothly. When installing the equipment, the whole machine is used for hoisting. Only two steel plates need to be embedded on the floors on both sides of the water collecting well, which is simple in civil engineering and convenient for installation and maintenance.
working principle:
The river type grid trash remover consists of a frame, a driving device, a transmission guide wheel, a rake chain combination, rake teeth and a slag retaining grid bar. Slag retaining plate, etc. Driven by the motor, the traction chain rotates from bottom to top on the upstream surface. When the rake gear shaft on the traction chain is transported to the upstream surface of the grid bar. The rake teeth are inserted into the gap of the grid bar, and the cleaning action is carried out from bottom to top to scrape the sundries intercepted on the grid bar into the rake, which has high removal efficiency and thorough. When the tooth rake is transferred to the machine, the sundries fall off by their own weight to the container or conveyor to send them away.
Features and applications:
During operation, sundries may enter the traction chain and block the chain, so a closed traction chain is designed. It is mainly composed of chain plate, chain pin and roller. During operation, it is guided by the guide rail on the frame, and the roller makes rolling movement on the guide rail, with small resistance and stable operation.
The positioning of underwater rotary wheel is made of stainless steel and equipped with wear-resistant copper sleeve self-lubricating bearing, which eliminates the daily maintenance of underwater parts.
The slag retaining part adopts the form of fixed grid, which has strong impact resistance and can withstand large water level difference. Based on the above advantages, the reverse fishing grid is applied to wide river sewage interception, rainwater pump station, river intake, coarse grid of sewage plant and other large flow water treatment places.
Ordering parameters:
1. Channel (equipment) width
2. Channel depth
3. Discharge height
4. Rake tooth clearance
5. Installation angle
6. Frame material
7. Rake tooth material
8. Other requirements
Outline diagram:
B=machine width; H=canal depth; H1=slag height; H2=H+H1+2000; α= Installation angle. Overflow flow calculation Hourly overflow flow of reverse fishing grid: q = k * (b-160) * h * V * 3600, where: Q = overflow flow (m3 / h); K = flow coefficient related to grid clearance (see coefficient table); B = grating machine width (m); H = water depth in front of the grating (m), generally 1m or more than 0.3m lower than the canal depth; V = overcurrent speed, generally 0.6 ~ 1m / s.
Main technical parameters Overcurrent coefficient K
| Grid gap (mm) |
15 |
20 |
30 |
50 |
80 |
100 |
>100 |
| discharge coefficient (K) |
0.42 |
0.5 |
0.6 |
0.71 |
0.8 |
0.83 |
0.85 |
Note: the approximate value of K corresponding to other gaps can be obtained by interpolation method.
Main technical parameters
| model(FLGL-) |
Equipment width(mm) |
Ditch width(mm) |
Motor power(kw) |
Overflow flow(m3/h) |
| Grid gap(mm) |
| 15 |
20 |
30 |
50 |
80 |
100 |
| 800 |
800 |
900 |
1.1 |
581 |
691 |
829 |
982 |
1106 |
1147 |
| 1000 |
1000 |
1100 |
762 |
907 |
1089 |
1288 |
1452 |
1506 |
| 1200 |
1200 |
1300 |
1.1~1.5 |
943 |
1123 |
1348 |
1595 |
1797 |
1865 |
| 1400 |
1400 |
1500 |
1125 |
1339 |
1607 |
1902 |
2143 |
2223 |
| 1600 |
1600 |
1700 |
1306 |
1555 |
1866 |
2208 |
2488 |
2582 |
| 1800 |
1800 |
1900 |
1488 |
1771 |
2125 |
2515 |
2834 |
2940 |
| 2000 |
2000 |
2100 |
1669 |
1987 |
2385 |
2822 |
3180 |
3299 |
| 2200 |
2200 |
2300 |
1851 |
2203 |
2644 |
3129 |
3525 |
3657 |
| 2400 |
2400 |
2500 |
2032 |
2419 |
2903 |
3435 |
3871 |
4016 |
| 2600 |
2600 |
2700 |
1.5~2.2 |
2214 |
2635 |
3162 |
3742 |
4216 |
4374 |
| 2800 |
2800 |
2900 |
2395 |
2851 |
3421 |
4049 |
4562 |
4733 |
| 3000 |
3000 |
3100 |
2576 |
3067 |
3681 |
4355 |
4908 |
5092 |
Audited Supplier 
B=machine width; H=canal depth; H1=slag height; H2=H+H1+2000; α= Installation angle. Overflow flow calculation Hourly overflow flow of reverse fishing grid: q = k * (b-160) * h * V * 3600, where: Q = overflow flow (m3 / h); K = flow coefficient related to grid clearance (see coefficient table); B = grating machine width (m); H = water depth in front of the grating (m), generally 1m or more than 0.3m lower than the canal depth; V = overcurrent speed, generally 0.6 ~ 1m / s.
){kind=link}