WN(Q) Series Dredging Pump

WN(Q) Series Dredging Pump

• Product Introduction

WN(Q) series dredging pump is marine sand dredge pump for dredging of river and sea. This pump is simple and reliable in structure, easy to disassemble and maintain, and adopts high chrome Cast Iron Parts. It has a long trouble-free life. This series of dredge slurry pumps are single-stage, single-suction, cantilever, horizontal centrifugal pumps. The flow passage of the impeller is wide through the capacity, so it is difficult to block for pumping sand gravel or high plastic clay. It has super strong excavation and suction ability.

WN(Q) series dredging pump is suitable for dredging and filling operations of cutter-suction dredger and trailing suction dredger. It is also used for river sand mining and mining vessels.

• Product Feature

1.The structure is simple and reliable.

Type 200WN-500WN dredging pump adopts single pump casing structure. According to the connecting way of Gear Box can provide two kinds of typical structures, one is connected with own bearing bracket, the other is combined with reduction Gear box. The lubrication of pump with bearing bracket is grease lubrication or thin oil lubrication.

Type 600WN-1200WN inboard pump adopts double pump casing structure, with its own bracket. Lubrication way is mandatory thin oil lubrication. The safety and reliability of the double pump casing design keeps the volute liner can be used to close to wear out, and when the liner was broken, no water will enter the pump room.

Series submersible slurry dredging pumps adopt single pump casing structure, in order to reduce the pump weight, easy to lift and move.

2. Easy to assemble and disassemble and easy to maintain. The front dismantling structure is adopted, and special disassembly tools are equipped to facilitate disassembly and assembly.

3.The performance of dredging is excellent. The flow and head curve of the pump are steep, the suction ability is strong, the ability of passing the pump is good, the change of the distance is more applicable, and the depth of digging and the higher transportation concentration can be reached.

4.Good wear resistance and long life of flow wear parts. The impeller, volute liner, throat bushing and rear plate liner (wearable liner) are made of strong wear resistant alloy Cast Iron whose hardness is not less than 58HRC.It has not only impact on resistance but also high anti-abrasion performance.

5.Using advanced hydraulic model, the pump has low hydraulic loss, high efficiency and low energy consumption. The service life of each part is full considered in the process of product design. The same replacement cycle reduce the maintenance and replacement costs.

6.The shaft seal is reliable and no leakage.

Type 200WN-500WN dredging pump adopts mechanical seals or packing seals or combination of mechanical and packing seals.

For the type 600WN-1200WN dredging pump, the shaft seals adopts screw shaft sleeve with L-shaped rubber seal device, which consists of three L-shaped seal rings and one threaded shaft sleeve.

200WN ̴ 500WN Pump combined with gear box structure

1 Gear box

2 Impeller release collar

3 Seal assembly

4 Adaptor plate

5 Rear plate liner

6 Frame plate

7 Cover plate

8 Throat bushing

9 Impeller

10 Supporting plate

200WN ̴ 500WN Pump with own bearing bracket structure

1 Shaft

2 Support

3 Impeller release collar

4 Seal assembly

5 Adaptor plate

6 Rear plate liner

7 Frame plate

8 Cover plate

9 Throat bushing

10 Impeller

11 Supporting plate

600WN ̴ 1200WN

Dredging structure chart

1 Bearing box

2 Bearing

3 Screw shaft sleeve

4 L-shaped seal assembly 5 Seal box

6 Rear plate liner

7 Shoulder ring

8 Volute liner

9 Discharge lining pipe

10 Frame plate

11 Gland cover plate

12 Cover plate

13 Throat bushing

14 Water sleeves 15 Wear ring

16 Impeller

17 Intake lining pipe

18 Seal box protecting ring

19 Sand control plate

20 Impeller release collar

21 Shaft

22 Thrust collar

23 Impeller release collar

24 Turning plate

• Range of Performance

Capacity Q:600-30000m3/h

Head H:15-90m

Discharge diameter: 200-1200mm

• Model Code

• Performance List

Type	Capacity (m3/h)	Head (m)	Speed (r/min)	Eff. (%)	NPSHr (m)	MAX. diameter of flowed particle(mm)	Discharge diameter /Suction diameter(mm)	Pump weight(kg)
200WND	600~800	20~40	700~900	60~65	＜4.5	178	200/250	2500
200WN	750~1000	40~65	700~850	70~72	＜4	180	200/250	3000
250WND	950~1100	20~40	500~700	65~70	＜4	220	250/300	3000
250WN	1100~1300	40~65	500~650	70~74	＜4	144	250/350	3513
300WND	1500~1800	20~40	400~650	65~68	＜4	241	300/350	6000
300WN	1800~2200	40~65	400~550	74~78	＜4	241	300/450	7000
350WN	2600~3000	40~65	400~550	74~78	＜4.5	245	350/450	7300
400WN	2800~3200	20~40	400~550	74~78	＜4.5	250	400/450	7500
450WN	3200~3800	40~67	350~500	76~80	＜4.5	254	450/600	7850
500WNQ	3600~4200	20~40	220~320	72~75	＜4.8	330	500/650	8000
500WN	4500~5500	40~65	350~450	78~80	＜4.8	250	500/650	11300
600WN	5000~9000	55~73	280~500	81~85	＜6	220	600/660	30000
600WNQ	4600~8000	23~37	350~400	81~84	＜6	220	600/700	16000
700WN	8000~12000	60~85	280~380	83~85	＜6	280	700/760	45000
700WNQ	8000~12500	16~28	240~280	80~84	＜6	280	700/760	21000
800WN	10000~15000	43~71	300~360	81~84	＜6	300	750/800	40000
800WNQ	10000~14400	20~43	200~280	81~84	＜6	300	750/800	23000
850WN	12000~18000	48~70	280~330	83~88	＜6	320	850900	65000
900WN	12000~19000	50~75	280~330	85~87	＜6	320	900/960	80000
1000WN	16000~25000	23~76	181~290	83~86	＜6	340	1000/1200	121000
1200WN	18000~33000	42~94	178~270	83~86	＜6	350	11000/12000	150000

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