Construction of dredging pump 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
Note: Approximate Performance For Clear Water, To Be Used For Primary Selection Only.
Features
√ Overall structure performance well in marine use WN1000 dredge pump with a double pump casing, single stage single suction cantilever horizontal structure. According to the connection type with the gear box, there are two kinds of typical structure, one is with independent support, the other is combined with gear box. The lubrication of pump with support is grease lubrication or thin oil lubrication. The double casing design can make the pump body safe even when the liner is worn out. Easy to disassemble and maintenance: WN type dredging pump can be disassembled from front. This make the disassemble and maintenance easier.
√ Good performance of dredging Good cavitation performance: WN type dredging pump have good cavitation performance which can ensure suction ability of pump. While it can achieve greater digging depth and higher suction concentration. High flow capacity and wide applicability: WN type dredge pump impeller passage is very wide to continuous pumping gravel or high plastic clay and not happens jam. Good carrying ability of pump is guarantee for dredger performance. Sharp Dropping performance curve: The flow and head curve falling steeply makes the mud pump having a stronger adaptability to the change of row spacing. Achieving various blendings of pump performance: WN dredging pump can change the rotational speed and the diameter of the impeller, to achieve the different head of pump under the same flow.
√ Wear-resistant and long-life service wet parts Wet parts of WN1000 dredging pump , such as impeller, volute liner, throat bushing and frame plate liner insert(wearable liner) adopt alloy cast iron material whose hardness is not less than 65HRC. It has not only impact on resistance but also high anti-abrasion performance. The service life of each part is fully considered in the process of product design. The same replacement cycle reduces the maintenance and replacement costs. Small hydraulic loss, high efficiency, low power consumption: Due to the advanced hydraulic model, the dredging pump has high efficiency level. The efficiency of WN dredging pump is higher about 2-3 percentage points than imported. Thus, in the same production, it can achieve lower fuel consumption.
√ A reliable seal and no leakage WN1000WN dredge pump adopts shaft seal with L-shaped screw shell rubber seal device which has three L-shaped seal rings and one shaft sleeve with special thread.
Performance Parameters
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
Applications
WN series dredge pumps are widely used for Dredging, Cutter Suction Dredger, Sand and Gravel, Contract Dredging, Tailings, Booster Pump, Sand waste pump, Material transfer pump etc.