250wn Horizontal Sand Gravel Slurry Pump

• Max.Head: 50-80m
• Max.Capacity: >400 L/min
• Driving Type: Motor
• Impeller Number: Single-Stage Pump
• Working Pressure: Middle Pressure Pump
• Influent Type of Impeller: Single Suction Pump
• Model NO.: 250WN
• Position of Pump Shaft: Horizontal Pump
• Pump Casing Combined: Verticaljoint Surface Pump
• Mounting Height: Suction Centrifugal
• Impeller: Closed
• Usage: Pump, Pumps, Condensate Pump, Slurry Pump, Circulating Pump, Sand and Gravel Extraction Pump
• Color: Blue, Yellow, Red, Green and Others
• OEM: Accept
• Stock: Yes
• After-Sales: Yes
• Mqq: 1 Unit
• Payment Term: Tt or LC
• Use: Dredging and Damming of The River and Seas
• Price: Negotiate
• Transport Package: Packed with Wooden Box or as Customer′s Request
• Specification: CE, ISO, SGS
• Trademark: Naipu Or OEM
• Origin: Shijiazhuang, China
• HS Code: 8413709990
• Production Capacity: 5000 Set Per Month

Product Description

 250WN Horizontal Sand Gravel Slurry Pump

10inch Dredging Sand  Pumps for sand and gravel extraction
30 Years Factory of Slurry Pump ,Sand Gravel Pump , Dredging Pump.
250WN / 10 inch Dredging Sand Pumps



Basic Information:
 

Name: NP-WN 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)

Pump Type Notation
300WN
300 --- Discharge Size 
WN---- Dredging Sand Pump 
 

NP-WN Dredging  PUMP PERFORMANCE PARAMETERS

 

Sand pump performance parameters

Type	Q	H	Impeller Speed	Eff	Inlet size	Outlet size	NPSH	Max solids size
	m3/h	m	r/min	%	mm	mm	m	5 pieces	3 pieces
250WN	1100-1300	40-65	500-650	70-74	350	250	<4.5	86	144
300WN	1500-2200	30-65	400-550	74-78	450	300	<4	144	241
450WN	3000-4000	35-67	350-500	76-80	600	450	<4.5	125	254
500WN	4000-5500	40-65	350-450	78-80	650	500	<4.8	150	250
600WN	5000-9000	55-80	320-400	81-85	650	600	<6	160	220
700WN	8000-12000	60-85	280-380	83-85	750	700	<6	180	280
800WN	10000-15000	50-70	260-360	79-80	850	800	<6	200	300
900WN	12000-19000	50-75	280-330	73-85	950	900	<6	210	320
1000WN	16000-25000	23-76	180-290	85-87	1100	1000	<6	230	350

Application and Feature

Naipu® NP-WN 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

Construction Drawing 



Material of construction

	VOLUTE	IMPELLERS	BASE	EXPELLER	EXPELLER RING	SHAFT SLEEVE	SEALS
Standard	High Chrome Alloy	High Chrome Alloy	Cast Iron	Chrome Alloy or SG Iron	Chrome Alloy or SG Iron	SG Iron	Natural Rubber
Options	SG Iron	SG Iron	Mild Steel Fabricated	SG Iron	SG Iron	EN56C Ferralium Hasteloy C Ceramic Stellite Chrome Oxide	Nordel Neoprene Viton Butyl EPDM

 

   
Related Products

Shijiazhuang Naipu Pump Co., Ltd is one of professional factory of slurry pump, sand gravel pump , dredging pump , Water pump and spare parts .
NaiPu Pump is devoted to pump solution industry for more than 30 years!

The Pumps are widely used in  in metallurgy, mining, Nonmetallic Mining, Coal, Energy 
resources, Sand mining, Dredging, Environmental protection, Petrochemical engineering, Flue gas desulfurization and other industrial departments.

The Pumps have been exported to USA, Canada, Germany, Russia , Australia, South Asia, North America,  South Africa, and etc , up to more than sixty countries.

NaiPu Main products
1. AH , AHF,Horizontal Slurry Pump
2. SP Vertical sump pump
3. ZJQ Submersible slurry pump
4. G Horizontal sand gravel pump
5. ZJQ Submersible sand pump
6. WS Dredging pump
7. AF Froth Pump
8. TL(R) Desulphurization Pump
8.Clean Water Pump
9. OEM Casting machinery parts 

Main Slurry Pump Parts : Impeller , Volute Liner , Casing , ThroatBush, Frame Plate Liner Insert , Cover Plate , Frame Plate, Pump Liner Expeller , Expeller Ring ,Stuffing Box , Expeller , Pump Shaft , shaft sleeve, Shaft Spacer, Bearing Assembly , Base, Stuffing Box, Gland Assembly, Bearing Housing , Lantern Ring , pump discharge pipe , flange , and so on.

Metal Liner Heavy Duty Slurry Pump AH TYPE 
 

1.5/1B-AH 2/1.5B-AH 3/2C-AH 3/2CC-AH 4/3C-AH 4/3CC-AH 4/3D-AH 4/3DD-AH 6/4D-AH 6/4DD-AH 6/4E-AH 6/4EE-AH 8/6E-AH 8/6EE-AH 8/6F-AH 8/6FF-AH 8/6R-AH 10/8ST-AH 10/8F-AH 10/8FF-AH 12/10ST-AH 12/10G-AH 12/10F-AH 12/10FF-AH 14/12ST-AH 14/12G-AH 14/12FF-AH 14/12F-AH 16/14TU-AH 20/18TV-AH
 

Rubber Liner Heavy Duty Slurry Pump AH TYPE 
 

1.5/1B-AHR 2/1.5B-AHR 3/2C-AHR 3/2CC-AHR 4/3C-AHR 4/3CC-AHR 4/3D-AHR 4/3DD-AHR 6/4D-AHR 6/4DD-AHR 6/4E-AHR 6/4EE-AHR 8/6E-AHR 8/6EE-AHR 8/6F-AHR 8/6FF-AHR 8/6R-AHR 10/8F-AHR 10/8X-AHR 12/10ST-AHR 14/12ST-AHR 16/14TU-AHR
 

Metal Liner Vertical Slurry Pump SP TYPE 
 

40PV-SP 65QV-SP 100RV-SP 150SV-SP 200SV-SP 250SV-SP
 

Rubber Liner Vertical Slurry Pump SP TYPE 
 

40PV-SPR 65QV-SPR 100RV-SPR 150SV-SPR 200SV-SPR
 

Metal Liner High Head slurry pump HH TYPE 

1.5/1C-HH 3/2D-HH 3/2DD-HH 4/3E-HH 4/3EE-HH 6/4F-HH 6/4FF-HH 6/4x- HH 6S-H 8/6S-H 8/6X-H 6S-HP 8/6S-HP 8/6X-HP
 

Metal Liner (Rubber Liner)Slurry Pump M TYPE 

10/8E-M(R) 10/8R-M(R)
 

Metal Liner (Rubber Liner)Frothy Slurry Pump AF TYPE
 

2QV-AF(R) 3QV-AF(R) 6SV-AF(R) 8SV-AF(R)
 

Metal Liner Gravel Pump G TYPE 
 

6/4D-G 6/4DD-G 6/4E-G 8/6E-G 8/6EE-G 10/8F-G 10/8FF-G 10/8S-G 12/10F-G 12/10FF-G 12/10G-G 14/12F-G 14/12FF-G 14/12G-G 10/8S-GH 10/8F-GH 10/8FF-GH 12/10G-GH 12/10F-GH 12/10FF-GH 14/12G-G 14/12T-G 18/16 T-G
 

Metal Liner (Rubber Liner ) Slurry Pump L TYPE 

20A-L 50B-L 50B-LR 75C-L 100D-L 150E-L 300S-L

Production Flow

Model Workshop --casting Work Shop-- Machining workshop--assembly workshop--stockage

  Application

The slurry pump are widely used in mining, power , metallurgy , coal, dredging, building material and other industrial lines to pump concentrate , tailings, sludge and other abrasive , high density slurries.

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 : Katherine Hou
What App /Mobile :[phone]

Shijiazhuang, Headquarters

Add.:No.368, Xinshi North Road, Shijiazhuang, Hebei Province, China

  

If you are intrested in Dredging Sand  Pumps , please do not hesitate to contact us!