River sand suction dredger pump with anti-abrasive material and
large flow rate capacity for gravel dredging
200WN to 500WN dredge pumps are of single casing, single stage
cantilevered horizontal centrifugal pumps. Two types of coupling
with gear box: frame and pump box.
600WN to 1000WN dredge pumps are of double casings, single stage
cantilevered centrifugal pumps. These pumps are equipped with frame
and lubrication is force thin oil. The design of double casing the
pump working till the volute liner almost worn down and guarantee
no leakage when volute liner is worn down.
Easy Uninstallation & Convenient Maintenance
WN dredge pump is of front uninstallation construction to make
uninstall easily and convenient maintenance. And special tools are
equipped for uninstalling the parts.
Standard four-head trapezoid thread connection between impeller and
shaft can transfer powerful torsion and be convenient to uninstall.
Impeller uninstall ring at shaft sleeve side also make the impeller
uninstallation much easier.
Good NPSH can not only guarantee suction but also make deep dredge
and high allowable suction density. Minimum NPSH: 4m.
With wide impeller passage, pump can continuously pump gravel or
high plastic clay without clogging. Max allow particle size: 350mm.
Performance curves descend obviously to make pumps adopt pipeline
By changing the impeller diameter or impeller rotating speed, it
can easily change the discharge with the same flow rate.
Material of wet parts is high wear resistant high chrome alloy.
Considering the maintenance, wear resistant parts are nearly of the
same wear life to reduce maintenance & interchange costs.
Low Hydraulic loss, High efficiency, Energy Saving
Efficiency of WN is 2 or 3 percentage higher than other common
Reliable Shaft Seal, No leakage
Shaft Seal types of 200WN to 500WN: Mechanical seal, packing, or
combination of mechanical and packing
600WN to 1000WN uses helical casing L rubber seal which is made of
3 pieces of L seal ring and one special thread shaft sleeve.
700WN to 1000WN can be equipped with turning to change rotating
|1. Advanced hydraulic model, CAD 3D design, high efficiency and
|2. Large dredging depth, high density of dredging mud, good NPSH
and strong suction lift ability|
|3. Strong through-put. The pump can presistently discharge gravel,
high plastic soil lump,etc.|
|4. The pump can be directly matched with either motor or diesel
|5. Wide application. It can be used in various kinds of soil
quality. Generally, the pump is matched with an impeller with 3 or
5 pieces of vane. At the same time, the impellers can be provided
with various diameters and vane types to suit kinds of working
|6. Little hydraulic loss, high efficiency and low oil-consumption|
|7. Little volume, light weight|
|8. Steady operating, little vibration, low noise|
|9. Simple & reliable constrution, easily disassembly &
|10. Reliable sealing without leakage|
|11. Long operating life of parts|