Basic Info.
Model NO.
8-6E-G
Position of Pump Shaft
Horizontal Pump
Pump Casing Combined
Horizontal Split Pumps
Mounting Height
Suction Centrifugal
Impeller
Closed
Usage
Pump, Pumps, Condensate Pump, Slurry Pump, Circulating Pump, Sand Dredging Pump
Product Name
Sand Gravel Pumps
Size
4-16 Inches
Material
High Chrome Alloy
Color
Blue, Yellow, Red or as Customers′ Request
Application1
Slag Grannulation
Application2
Suction Hopper Dredging
Application3
Dredging
Application4
Barge Loading
Application5
Sand Reclamation
Application6
Sugar Beet
Transport Package
Wooden Case
Specification
8/6E-G
Trademark
Naipu or OEM
Origin
China
HS Code
8413701090
Production Capacity
500sets/Month
Product Description
Sand Pump Anti-Abrasive Centrifugal Sand Dredge Pump
Naipu NP-G series of dredge and gravel pumps is designed specifically for continous 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 Application -
Slag Granulation
Suction Hopper Dredging
Dredging
Barge Loading
Sand reclamation
Sugar beet
1. Application:
Absorb the silt and sand in the river, lake, sea, reservoir, pound, electric power plant, stone processing plant, deep well.
2. Technological Characteristic:
A horizontal, single-shell structure pump, flow components hardware nickel, chromium high abrasion resistant material and has good wear resistance, corrosion resistance and high reliability.
Pump and drive straight for the choice of the drive, V-belt drive, hydraulic coupling drive, drive reducer.
The discharge direction of pump can be oriented in any direction of 360° .
Pump in the direction of the export of a 360-degree rotation installation location to accommodate different installation conditions at the scene.
Sealing Forms :
1 Packing gland For the suction or gravity condition. The pressure of sealing liquid should be 35Kpa higher than the discharge pressure of the seen in following table.
2 Expeller seal In general for gravity condition the gravity head should not be exceeded to 10% of the total head of the pump and the shaft power increase by 5% about.
3. Features:
High efficiency, wear resistant, stable performance.
4. Type notation:
6/4D-G (orGH)
6-------------suction diameter(inch)
4-------------discharge diameter(inch)
D-------------frame form
G-------------gravel pump
GH-----------high-head of gravel pump
Construction Drawing:
Pump Performance Curve Selection Chart
NP-G Pump Performance Parameters
Product Overview
Naipu Other related Sand Gravel Pumps
Sand Gravel Pump Application
Suction Hopper Dredging | Constructional Material | Sand Gravel Processing | Barge Loading |Sand Reclamation
Possible Faults and Settlements
Contact Us
Shijiazhuang Naipu Pump Co.,Ltd
Contact Person: Karen Tan
Naipu NP-G series of dredge and gravel pumps is designed specifically for continous 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 Application -
Slag Granulation
Suction Hopper Dredging
Dredging
Barge Loading
Sand reclamation
Sugar beet
1. Application:
Absorb the silt and sand in the river, lake, sea, reservoir, pound, electric power plant, stone processing plant, deep well.
2. Technological Characteristic:
A horizontal, single-shell structure pump, flow components hardware nickel, chromium high abrasion resistant material and has good wear resistance, corrosion resistance and high reliability.
Pump and drive straight for the choice of the drive, V-belt drive, hydraulic coupling drive, drive reducer.
The discharge direction of pump can be oriented in any direction of 360° .
Pump in the direction of the export of a 360-degree rotation installation location to accommodate different installation conditions at the scene.
Sealing Forms :
1 Packing gland For the suction or gravity condition. The pressure of sealing liquid should be 35Kpa higher than the discharge pressure of the seen in following table.
2 Expeller seal In general for gravity condition the gravity head should not be exceeded to 10% of the total head of the pump and the shaft power increase by 5% about.
3. Features:
High efficiency, wear resistant, stable performance.
4. Type notation:
6/4D-G (orGH)
6-------------suction diameter(inch)
4-------------discharge diameter(inch)
D-------------frame form
G-------------gravel pump
GH-----------high-head of gravel pump
Construction Drawing:
| Main Part Number At the Drawing | ||||||
| 003: Base | 131:Bowl | |||||
| 005:Bearing Assembly | 137:Impeller | |||||
| 132: Intake Joint | 041:Back Liner | |||||
| Discharge Joint | 135:Door Clamp Ring | |||||
| 130:Discharge Flange | 134:Adapter Plate Clamp Ring | |||||
| Intake Flange | 124:Volute Cover Seal | |||||
| 013: Cover Plate | ||||||
| Material of Construction | |||||||
| VOLUTE | IMPELLERS | BASE | EXPELLER | EXPELLERRING | SHAFT SLEEVE | SEALS | |
| Standards | 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 Hastelloy C Ceramic Stellite Chrome Oxide | Nordel Neoprene Viton Butyl EPDM |
Pump Performance Curve Selection Chart
NP-G Pump Performance Parameters
| Pump Model | Allowable Max. Power (kW) | Clear Water Performance | Max Solid Passing (mm) | ||||||
| Capacity Q | Head | Speed | Max.Eff. | NPSH | Impeller | ||||
| m3/h | l/s | H(m) | n(r/min) | η% | (m) | Dia. | |||
| 6/4D-G | 60 | 36-250 | 10-70 | 5-52 | 600-1400 | 58 | 2.5-3.5 | 378 | 82 |
| 8/6E-G | 120 | 126-576 | 35-160 | 6-45 | 800-1400 | 60 | 3-4.5 | 378 | 127 |
| 10/8S-GH | 560 | 216-936 | 60-260 | 18-80 | 500-1000 | 65 | 3-7.5 | 533 | 180 |
| 10/8S-G | 560 | 180-1440 | 50-400 | 13-50 | 500-950 | 72 | 2.5-5 | 711 | 178 |
| 12/10G-G | 600 | 360-1440 | 100-400 | 10-60 | 400-850 | 65 | 1.5-4.5 | 667 | 220 |
| 12/10G-GH | 1200 | 288-2808 | 80-780 | 16-80 | 350-700 | 73 | 2.0-10.0 | 950 | 210 |
| 14/12G-G | 1200 | 576-3024 | 160-840 | 8-70 | 300-700 | 68 | 2.0-8.0 | 864 | 241 |
| 16/14TU-GH | 1200 | 324-3600 | 90-1000 | 26-70 | 300-500 | 72 | 3.0-6.0 | 1270 | 230 |
| 18/16T-G | 1200 | 720-4320 | 200-1200 | 12-48 | 250-500 | 72 | 3.0-6.0 | 1067 | 254 |
Product Overview
Naipu Other related Sand Gravel Pumps
Sand Gravel Pump Application
Suction Hopper Dredging | Constructional Material | Sand Gravel Processing | Barge Loading |Sand Reclamation
Possible Faults and Settlements
| Faults | Reason | Settlement |
| 1.Pump fails to discharge any water,The hand of pressure gauge beat violently | 1.Suction pipe don't have enough water. 2.Suction pipe blocked or the valve is locked. | 1. Inject enough water 2.unlock the inlet valve,clear the blocks 3.Exclude the air leakage |
| 2.The pump can't discharge water,the hand of vacuum meter beat heavily. | 1.The inlet valve is unlocked or silted up. 2.The resistance of suction pipe is too big or silted up. 3.The height of suction is too high. | 1.Unlock the valve or desilting 2.improve the design of suction pipe or desilt 3.Lower the height of the installation. |
| 3.The pump can't discharge water,pressure gauge shows heavy pressure. | 1.The resistance of the discharge pipe is too big. 2.The impeller blocked 3.The speed is slow. | 1.Check and adjust the outlet pipe. 2.Clear the impeller 3. Improve the speed. |
| 4.The pump doesn't rotate | The volute is silted up by the blocks. | Clear the blocks |
| 5.The capacity is not enough | 1.The blocks of the impeller or the inlet or outlet pipe. 2.The abrasion of the impeller is heavily. 3.The speed is low to normal 4.Pump is installed unreasonably or the leakage of the inlet pipe. 5.The transporting height is too high,the loss of the resistance of the inside pipe are too big. 6.The inlet valve not open enough or blocked 7.The packing seal leaks | 1.Clear the impeller or pipe. 2.Change the impeller 3.Adjust the speed 4.Install again or stop leaking.
|
| 6.The motor of the pump is overloaded | 1.The head of the pump exceeds the head of the working condition. 2.Not consider the slurry density when selecting the pump. 3.The packing press tightly | 1.Turn down the outlet valve,cut the impeller or lower the speed. 2.Select the motor again. 3.Adjust the the screw of the packing gland |
| 7.Abnormal sound in the pump, and no water out | 1.The resistance of the inlet pipe is too big. 2.The height of the suction is too high. 3.Cavitation occurred
|
|
| 8.pump vibrates | 1.pump cavitate 2.The block of the impeller single vane 3.The no concentricity between the pump shaft and motor shaft 4.Fasteners or foundation loose | 1.Adjust the water valve ,lower the height of the installation,reduce the resistance of the inlet. 2.Clear the impeller 3.Alignment again 4.Fasten the screw,and reinforce the foundation. |
| 9.Bearing is overheat | 1.lock the cooling water 2.lubrication is not good. 3.the lubrication oil is not clear 4.the wrong direction of the thrust bearing. 5.there is something wrong with the bearing. |
|
| 10.Packing short life | The material of packing is not good | Change the packing |
| 11.pump leak oil | 1.High oil level 2.The rubber parts invalid 3.Assembly problem | 1.Lower the oil level 2.Change rubber spares 3.Adjust the assembly |
| 12 Pump head leaking | 1.The rubber parts not press well | Assembly again or press tightly |
Contact Us
Shijiazhuang Naipu Pump Co.,Ltd
Contact Person: Karen Tan
