China 250wn Horizontal SGravel Slurry Pump

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 sizeOutlet sizeNPSHMax 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

VOLUTEIMPELLERSbaseEXPELLEREXPELLER RINGSHAFT SLEEVESEALSStandardHigh Chrome AlloyHigh Chrome Alloy Cast IronChrome Alloy
or
SG IronChrome Alloy
or
SG IronSG IronNatural RubberOptionsSG IronSG IronMild Steel
FabricatedSG IronSG Iron EN56C
Ferralium
Hasteloy C
Ceramic
Stellite
Chrome OxideNordel
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

FaultsReasonRemovalPump fails to discharge any liquidAir 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 excessiveGland 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 shaftLoosen 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 bearingBearing has short timeMisalignment 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 bearingAdjusting drive and pump shaft
Replacing shaft
Removal rubbing and replacing new impeller
Clean the bearing
Replacing or refitting the bearingExcessive leakage from stuffing boxPacking rings excessive worn
Shaft sleeve worn
Dirty sealing waterReplace new packing rings
Replace shaft sleeve.
Change clean sealing waterPump vibrates Or is noisyBearing worn
Impeller unbalanced
Air entered into suction pipe or blocked
Flow rate no-uniform and pump not primedReplace 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 :+86-15028111051

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!