850 WN Dredging Pump

850WN Dredging Pump

•      Product Introduction

   850WN  is  850mm size double-shell dredging pump.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.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.This design is reliable and no leakage.The pump is single-stage, single-suction, cantilever, horizontal centrifugal slurry pump.It is usually used as cutter-suction dredger or trailing suction dredger cabin. The gear box is connected with own bearing bracket.Lubrication way is mandatory thin oil lubrication.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. These WN series dredge slurry pumps are simple and reliable in structure, easy to disassemble and maintain, and adopt high chrome cast iron parts,which has a long trouble-free life. 

850WN is marine dredging sand suction pump for dredging of river and sea.It 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.

       850WN 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.

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.

        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.

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:12000-18000m³/h

Head          H:48-70m

Discharge diameter: 850mm

   •      Outline Drawing