500 Wsg (20 inch) Sand Dredging Pump and Gravel Dredger Pump

• Type: Cutter Suction Dredger
• Power Type: Diesel
• Cyclone Type: Hydrocyclone
• Slot Type: CTD
• Customized: Customized
• Condition: New
• Model NO.: 500WSG
• Transport Package: Packed with Wooden Box or as Customer′s Request
• Specification: CE, ISO, SGS
• Trademark: Naipu
• Origin: Shijiazhuang, China
• HS Code: 8413701090
• Production Capacity: 5000 Set Per Month

Product Description

 500 WSG (20 inch) Sand Dredging Pump and Gravel Dredger Pump

Basic Information:

Name: NP-WS Dredging Gravel Pump
Pump Type: Centrifugal
Drvie Type: DCZ
Power: Motor / Diesel
Discharge Size: 100-1000mm
Capacity: 180-25000(m³/h)
Head: 25-76(m)

Application and Feature

Naipu® NP-WS dredging pump is single-stage single-suction cantilever horizontal centrifugal pump with advantages of light weight ,good wear-resistant ,super dredging performance ,perfectly suited for the dredge on the whole construction ,high multiple economy benefits and so on .It throughout meets requirements of the dredge to dredging pumps .The pump mainly consists of the pump head , gearbox specifically for the dredging pump ,high elastic coupling and supervisor system of the driving device for the dredge.

Typical Applications---

Suction Hopper Dredging
Constructional Material
Sand gravel processing
Barge Loading
Sand Reclamation

NP-WS Dredging  PUMP PERFORMANCE PARAMETERS
 

type	Capacity (M3/H)	Head (M)	Speed (r/min)	Efficiency(%)	Inlet Dia (mm)	Outlet dia.   (mm)	NPSHR (M)		Max dia of flowed particle		Weight(T)
									five	three
100 WS	180-250	25-45	1000-1400	50-58	150	100		<3.5	50	82	0.5
150WS	250-550	20-40	1200-1400	58-60	200	150		<4	76	127	1.1
150WSG	350-700	40-65	800-980	68-71	200	150		<3.5	84	140	1.9
200WS	350-700	20-45	700-980	60-65	250	200		<4.5	105	178	2.3
200WSG	550-1000	40-65	700-850	70-72	250	200		<4	108	180	3.2
250WS	700-1100	20-45	500-750	65-70	300	250		<4	132	220	4.5
250WSG	900-1500	40-60	500-650	70-74	350	250		<4.5	86	144	4.6
300WS	1100-1800	20-40	400-600	65-68	350	300		<4.5	144	241	5.5
300WSG	1500-2200	30-65	400-550	74-78	450	300		<4	144	241	8.0
350WSG	2000-3000	40-65	400-550	74-78	450	350		<4	147	245	8.8
450WSG	3000-4000	35-67	350-500	76-80	600	450		<4.5	125	254	12
500WSG	4000-5500	40-65	350-450	78-80	650	500		<4.8	150	250	17
600WSG	5000-9000	55-80	320-400	81-85	650	600		<6	160	220	35
700WSG	8000-12000	60-85	280-380	83-85	750	700		<6	180	280	50
800WSG	10000-15000	50-70	260-360	79-80	850	800		<6	200	300	58
900WSG	120000-19000	50-75	280-330	83-85	950	900		<6	210	320	85
1000WSG	16000-25000	23-76	180-290	85-87	1100	1000		<6	230	350	126

Sand Dredge Pump Feature:
1. Dredge pump suitable for dredging ship:

The structure of 200WS-500WS type pumps are single-casing, single-stage, single-suction, cantilever and horizontal. According to the connection with the gear box, two structures can be offered: Self-carrying bracket and pump-box assembly. The lubrication for the bracket is grease or thin oil.
The structure of 600WSG-1000WSG type pumps are double-casing, single-stage, single suction, cantilever and horizontal. It has self-carrying bracket. Lubrication is forced thin oil lubricating. The double-casing design can ensure the liner can work till it is worn out, and if the liner crack, water can not enter into the pump.

2. Easy to Disassembly and Installation, Convenient Maintenance:

WSG type pump adopts 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 parts 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.

3. Good Performance on NPSH:

The good NPSH performance of WN type pump ensures the strong suction ability as well as deeper dredging depth and denser dredging concentration.

4. Good Wear-resistant Performance, Long Service Time of Wet Parts:

Wet 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.

5. Reliable Shaft Sealing Without Leakage:

The shaft of 200-500WSG dredging pump uses the mechanical sealing or stuffing sealing or mechanical-stuffing compound sealing.
The shaft of 600-1000 WSG dredging pump adopts spiral sleeve L (shape) rubber sealing device that consists of three L sealing ring and one special thread shaft sleeve
Possible Faults And Removal

Faults	Reason	Removal
Pump fails to discharge any liquid	Air leaking into suction or gland Incorrect direction of pump rotation & impeller worn Suction pipe blocked	Sealed leakage Check direction of rotation and replacing impeller  Removal blockage
Shaft power consumption is excessive	Gland excessively tightened against packing rings Rotating component rubbing on a stationary part Bearing worn Drive belt tension too tight  Flow rate too large Pump speed and ratio too high Misalignment or unparallel of drive shaft and pump shaft	Loosen gland bolts Removal the rubbed part Replace the bearing Adjusting belt Modifying the pump duty and speed Adjusting drive and pump shaft
Bearing is over heating	Lubricants to much or less Containing impurity in the lubricant  Bearing worn	Lubricant as requirement Replace new lubricant Replace new bearing
Bearing has short time	Misalignment or unparallel of drive and pump shaft Shaft bent Impeller unbalanced due to wear Foreign object entered into the bearing or insufficient lubrication Incorrect procedure followed in fitting bearing	Adjusting drive and pump shaft Replacing shaft Removal rubbing and replacing new impeller Clean the bearing  Replacing or refitting the bearing
Excessive leakage from stuffing box	Packing rings excessive worn Shaft sleeve worn Dirty sealing water	Replace new packing rings Replace shaft sleeve. Change clean sealing water
Pump vibrates Or is noisy	Bearing worn  Impeller unbalanced Air entered into suction pipe or blocked Flow rate no-uniform and pump not primed	Replace by new bearing  Replace by new impeller Discharge air and remove block Improve on the pump feeding.

 
   
Contact Us

 ShiJiaZhuang NaiPu Pump Co.,Ltd
Contact person :Kitty Liu
What App /Mobile :[phone]
Shijiazhuang, Headquarters
Add.:No.368, Xinshi North Road, Shijiazhuang, Hebei Province, China
     
If you are intrested in sand suction pump, please do not hesitate to contact us!