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WN450 Sand Dredge Pump

Inlet: 600mm
Outlet: 450mm
Capacity: 3200-3850m3/h
Head: 40-67m
Speed: 350-500r/min
Max.Particles: 354mm
Materials: High chrome alloy

Construction of dredging pump
dredging pump construction component
Main Part Number At The Drawing
1 – Shaft 2 – Frame 3 – Mechanical Seal Assembly 4 – Connecting Plate
5 – Rear Liner 6 – Pump Casing 7 – Cover Plate 8 – Front Liner
9 – Impeller 10– Support

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DREDGE PUMP SELECTION CHART

WN450 Sand Dredge Pump

Note: Approximate Performance For Clear Water, To Be Used For Primary Selection Only.

√ Structure suitable for dredgers:
The structure of WN450 type sand dredge pumps are single-casing, single-stage, single-suction, cantilever and horizontal. According to the connection with the gearbox, two structures can be offered: self-carrying bracket and pump-box assembly. The lubrication for the bracket is grease or thin oil.

√ Easy to Disassembly and Installation, Convenient Maintenance:
WN450 sand dredge pump adopts a front-disassembly structure in favor of easy disassembly and maintenance. Also, it is equipped with special disassembly tools for each different part according to each part’s features. The standard trapezoidal quadruple thread is adopted to connect the impeller and shaft, which not only transmits strong torque but also is easy to disassembly.

√ Good Performance on NPSH:
The good NPSH performance of WN450 sand dredge pump ensures the strong suction ability as well as deeper dredging depth and denser dredging concentration.

√ Good Wear-resistant Performance, Long Service Time of Wet Parts:
Wear parts of this kind of dredging pump-impeller, liner and front & back liner plate are adapted anti-wear cast iron alloy whose hardness is more than 58HRC, who has both strong anti-attack feature and higher resistance wear and resistance abrasion features. The hardness of TA31 material that is researched and tested successfully by us can research 70HRC.

√ Reliable Shaft Sealing Without Leakage:
The shaft of WN450 dredging pump uses the mechanical sealing or stuffing sealing or mechanical-stuffing compound sealing.

Model

Capacity Q
(m3/h)

Head H
(m)

Speed n
(rpm)

Eff. η
(%)

NPSH
(m)

Inlet Dia.
(mm)

Outlet Dia.
(mm)

Max. Particles
(mm)

200WND

600-800

20-40

700-900

60-65

<4.5

250

200

178

200WN

750-1000

40-65

700-850

70-72

<4

250

200

180

250WND

950-1100

20-40

500-700

65-70

<4

300

250

220

250WN

1100-1300

40-65

500-650

70-74

<4

350

250

144

300WND

1500-1800

20-40

400-600

65-68

<4

350

300

241

300WN

1800-2200

40-65

400-550

74-78

<4

450

300

241

350WN

2600-3000

40-65

400-550

74-78

<4.5

450

350

245

400WN

2800-3200

20-40

400-550

74-78

<4.5

450

400

250

450WN

3200-3850

40-67

350-500

76-80

<4.5

600

450

354

500WND

3600-4200

20-40

220-320

72-75

<4.8

600

500

330

500WN

4500-5500

40-65

350-450

78-80

<4.8

650

500

250

600WN

5000-9000

55-80

280-420

81-85

<6

660

600

220

700WN

8000-12000

60-85

280-380

83-85

<6

760

700

280

900WN

12000-19000

50-75

280-330

85-87

<6

960

900

320

1000WN

16000-25000

23-76

181-290

85-87

<6

1200

1000

350

√ Construction:
• preparation, pumping and recycling of bentonite
• transportation of mud, sand, and gravel
• pumping in depth and special foundations
• moving slurries in civil works
• emptying sludge for tunnel construction

√ Industry:
• pumping and recycling in cement mills and concrete factory
• sand and gravel winning in quarries
• pumping heavy/dirty water in mines(gold, diamonds, coal, copper…)
• extraction of very dense and abrasive liquids in mine (salt, uranium…)
• waste water treatment plant
• cleaning sand filters
• cleaning of sedimentation tanks
• pumping of scales, tar, oil residues, waste, tailings, lime in industry

√ Dredging:
• cleaning and dredging of marinas, harbors, dams, rivers, lakes, irrigation channels
• sand extraction
• marine salvage
• pipes and cables laying systems
• ship unloading
• high depth pumping works

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