For cutter suction dredger, it have 2 types dredging pumps usually.
One dredging pump in cabin and one underwater pump on the ladder.
2 pumps working together can have longer discharge distance and deeper dredging capacity.
The total dredging depth can reach over 30m deep, and total discharge distance 2000-4000m.
| Pump model | ZN500 dredging pump |
| Inlet&Discharge size | 26X20 inch |
| Flow range | 3800-5500m3/h |
| Head range | 30-70m |
| Speed range | 350-450rpm |
| Power in max | 1500kw |
| Solid handling | 250mm |
The underwater sand pump is directly improved from the cabin sand pump but working suitable underwater:
1. Compared with the horizontal cabin sand pump, the underwater pump can increase the suction depth
and increase the output.
2. Compared with vertical sand pumps, underwater pumps can withstand greater pressure.
3. Light bracket with water proof oil seal design to work suitable underwate.
1. Superior 3D design technology
2. The robust and functional design
3. The front liner and impeller is specially designed, it is easy for maintenance.
4. It prolong the lifetime of these wet parts, and saved more costs.
| Model | ZN dredging pump performance table | ||||||
| Capacity | Head | Speed | Efficiency | NPSH | Outlet/Inlet Diameter | Max Particles Size | |
| (m3/h) | H(m) | n(r/min) | η(%) | (m) | (mm) | (mm) | |
| ZN250 | 300-1600 | 35-80 | 490-750 | 70-74 | 4 | 250/350 | 144 |
| ZN300 | 1800-3000 | 40-65 | 425-550 | 74-78 | 4 | 300/450 | 241 |
| ZN350 | 2600-3000 | 40-65 | 400-550 | 74-78 | 4.5 | 350/450 | 205 |
| ZN400 | 2800-3200 | 20-40 | 400-550 | 74-78 | 4.5 | 400/450 | 200 |
| ZN450 | 3200-3850 | 40-67 | 350-500 | 76-80 | 4.5 | 450/600 | 254 |
| ZN500 | 4500-5500 | 40-65 | 350-450 | 78-80 | 4.8 | 500/650 | 250 |
| ZN600 | 5000-9500 | 55-80 | 280-420 | 84-85 | 6 | 600/660 | 280 |
| ZN700 | 8000-12000 | 60-85 | 280-380 | 83-85 | 6 | 700/760 | 300 |
| ZN800 | 10000-15000 | 60-70 | 260-360 | 79-80 | 6 | 800/850 | 320 |
| ZN900 | 12000-19000 | 50-75 | 280-330 | 85-87 | 6 | 900/960 | 340 |
| ZN1000 | 16000-25000 | 23-76 | 181-290 | 85-87 | 6 | 1000/1200 | 350 |
Zidong high efficiency horizontal dredge pump are designed for heavy duty applications such as mining, power sector, dredging river, and tailings as well as specialty applications, which are used for continuous pumping of high abrasive, high density sand and gravels.
- Dredging, mud and sand clearing, sand extraction, sand suction and so on of the port, watercourse, lake and so on;
- Mud and sand, gravel extraction, land reclamation project;
- Slag discharge of the iron mine, tailing pond, ore dressing plant and other mines, slurry discharge and all solution containing solid substance;
- Absorption of the high-concentration tailing slag, waste residue, high-temperature iron slag and iron chip in metallurgy, steel and other industries;
- Sand extraction, gold washing and so on
- It can be applicable for work in the shallow water zone and swamp, and can be used for watercourse dredging, lake development, wetland park construction, development along the beach,salt lake development, tailing control and other water conservancy project and swamp development project.
Zidong ZN500 underwater sand dredging pump in oversea site:
