6/4D-G Sand Mining Pump River Sand Dredge Pump

• Max.Head: >150m
• Max.Capacity: >400 L/min
• Driving Type: Motor
• Impeller Number: Single-Stage Pump
• Working Pressure: Low Pressure Pump
• Influent Type of Impeller: Single Suction Pump
• Model NO.: 6/4D-G
• Position of Pump Shaft: Horizontal Pump
• Pump Casing Combined: Horizontal Split Pumps
• Mounting Height: Suction Centrifugal
• Impeller: Semi-Open
• Usage: Pump, Pumps, Condensate Pump, Slurry Pump, Circulating Pump, Sand Pump
• Paiting: Different Colour
• Transport Package: Plywood Case
• Specification: CE
• Trademark: Naipu
• Origin: Shijiazhuang City
• HS Code: 8413709990
• Production Capacity: 5000 PC

Product Description

Naipu® NP-G series of Dredge and Gravel pumps is designed specifically for continuous pumping of extremely aggressive slurries, with a wide particle size distribution. Capable of handling large particles at consistently high efficiencies results in low cost of ownership. The large volume internal profile of the casing reduces associated velocities further increasing component life.

Typical Applications---

Slag Granulation
Suction Hopper Dredging
Dredging
Barge Loading
Sand Reclamation
Sugar Beet

	LINERS	IMPELLERS	CASING	BASE	EXPELLER	EXPELLER RING	SHAFT SLEEVE	SEALS
Standard	Chrome Alloy Natural Rubber	Chrome Alloy Natural Rubber	SG Iron	SG Iron	Chrome Alloy     or   SG Iron	Chrome Alloy     or   SG Iron	SG Iron	Rubber  and Nitrile
Options	Ferralium Hastelloy C 316 SS W151 Polyurethane Neoprene Butyl Viton Nitrile EPDM Hypalon	Ferralium Hastelloy C 316 SS W151 Polyurethane Neoprene Butyl Nitrile Hypalon	SG Iron Various grades	MS Fabricated Cast Iron	NI Resist Ferralium Hastelloy C Polyurethane 316 SS W151	NI Resist Ferralium Hastelloy C 316 SS Rubber W151 Polyurethane Neoprene Butyl Nitrile	EN56C Ferralium Hastelloy C Titanium 316 SS 304 SS	Ceramic Stellite Chrome Oxide Nordel Neoprene Viton

Performance Parameter:
 

Model	Flow (m3/h)	Head (m)	Speed (r/min)	Efficiency (%)	NPSHr (m)	Max permissible  particle size/mm	Drive type
6X4D-NP-G	187-36	7-51	1400-600	30-58	1.5-3.7	82	CV.CR.DC
8X6E-NP-G	576-133	10-48	1400-800	60-54	1.2-4.2	127	CV.CR.DC
10X8F-NP-G	930-216	11-44	940-500	65-34	3-7	178	CR.DC
12X10G-NP-G	1512-360	11-58	850-400	70-50	1.5-6	220	CR.DC
14X12G-NP-G	3168-522	9.5-66	700-300	68-60	2-8.5	241	CR.DC
16X14TU-NP-G	3024-900	14-45	500-300	70-50	3.5-6.5	254	CR.DC
10X8F-NP-GH	1091-324	19.2-56.5	800-500	72-60	1.5-5	180	CR.DC
12X10G-NP-GH	2232-612	28-77	700-450	73-60	1.5-8	210	CR.DC

Possible faults and removal:

Type A H(R) series pump has a compact construction. If it is correctly installed and operated, the pump will have a long life.

Faults	Reason	Removal
Pump fails to discharge any liquid.	Air leaking into suction or gland Incorrect direction of pump rota- tion and impeller worn. Suction pipe blocked	Sealed leakage. Check direction of rotation and replacing a new impeller. Removal lockage.
Shaft Power consumption is excessive	Gland excessively tightened against packing rings. Rotating component is 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 hearing	Lubricants too much or less. Containing impurities in the lubricant Bearing worn.	Lubricating as requirements. Replace clean lubricant. Replace new bearing.
Bearing has short life.	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 bearings.	Adjusting drive and pump shaft. Replacing shaft. Remove rubbing and replacing new impeller Clean the bearing. Replacing or refitting the bearings.
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.	Bearings worn. Impeller unbalanced. Air entered into suction pipe or blocked. Flow rate is none-uniform and pump not primed.	Replaced by new bearings. Replaced by new impeller. Discharge air and remove block. Improve on the pump feeding.

 


Service:

OEM service	Produce the pump and spare parts according to client's drawing or sample.
Pump selection	Help customers select the type, size and operating speed of pumps that will perform at the lowest cost.
Using service	Offer Design, Installation, Repair and Maintenance solutions and Mine measuring up service.
Quality control	Pay more attention to the quality in every process with different instruments.
Material service	Interchangeable metal design allow best material choice for any application.
After-sales service	Provide lifetime after sale service to solve any question during uses and large stock for standard spare parts.
Guarantee	One year guarantee for whole machine except of the wet end parts.