Gravel Pump Marine Sand Pump For River Sand Mining 6 / 4 D - G
Product Introduction
Structure: It is a centrifugal pump with horizontal and single pump
shell structure. The special clamp is used to clamp the pump body
and the pump cover. The bearing assembly adopts a cylindrical
structure, which is convenient for adjusting the gap between the
impeller and the pump body, and can be completely removed during
maintenance. The bearings are greased.
Material: The material of the over-flow component is made of
high-hardness wear-resistant alloy cast iron.
Use: wide pump flow, good cavitation performance, high efficiency
and wear resistance. Mainly used for particles
It is too large for the continuous transport of strong abrasive
materials that cannot be transported by conventional slurry pumps.
It is suitable for dredging, sand absorbing gravel, dredging river
channel, river sand mining and metal smelting slag conveying.
Shaft seal form: packing seal, impeller seal, mechanical seal.
Specification
Model | 6 / 4 D - G |
Allowable Max.Power | 60 kw |
Capacity | 36 - 250 m³/h |
Head | 5 - 52 m |
Speed | 600 - 1400 r/min |
Max.Eff. | 58 % |
NPSH | 2.5 - 3.5 m |
Impeller Dia. | 378 mm |
Application
-dredging
-sifting gravel
-dredging rivers
-mining
-metal smelting
-blasting
Type meaning for dredge pump
6 / 4 D-G(H)
6----------------Suction Diameter (inch )
4----------------Discharge Diameter (inch)
D----------------Support Type
G----------------Pump Model
H----------------Gravel Pump High Head
Structure Features:
The main overflow parts of GH type slurry pump are made of
anti-wear white cast iron. Users can choose according to the medium
condition and use requirements.
The G/GH type gravel pump adopts a single pump shell structure
connected by a cassette. It is a single-stage single-suction
cantilever centrifugal pump with light weight, good cavitation
performance, strong anti-abrasive property, wide over-flow passage,
easy to install and use. It has the advantages of continuous
conveying of large particles of strong abrasive mud, suitable for
dredging of dredgers, sand extraction by sand mining vessels, and
dredging of rivers.
This series of gravel pumps consists of pump heads, sealing
components, bearing components, brackets, etc. The lubrication of
the bearings is grease lubrication. The over-flow component
impeller, pump body, front guard plate and rear guard plate are all
made of strong anti-wear high-chromium alloy or wear-resistant
alloy steel with a hardness of not less than 58HRC.
Sealing form: packing seal, auxiliary impeller seal, packing plus
auxiliary impeller seal, mechanical seal and other types.
Transmission mode: V-type V-belt drive, flexible coupling drive,
gear reducer drive, hydraulic coupling drive, variable frequency
drive, thyristor speed control, etc. A variety of speeds and a
variety of variants allow the pump to operate under optimal
conditions. Long service life and high operating efficiency can
meet a variety of harsh conveying conditions.
G(H) gravel pump material list for parts:
| Part Name | Material | Specification | HRC | Application | OEM Code |
| Bowl, door, back liner & impeller | Metal | AB27: 23%-30% chrome white iron | ≥56 | Used for higher wear condition with pH between 5 and 12 | A05 |
| AB15: 14%-18% chrome white iron | ≥59 | Used for higher wear condition | A07 |
| AB29: 27%-29% chrome white iron | 43 | Used for lower pH condition especially for FGD. It also can be used
for low-sour condition and desulfuriation installation with pH not
less than 4 | A49 |
| AB33: 33%-37% chrome white iron | | It can transport oxygenated slurry with pH not be less than 1 such
as phospor-plaster, nitric acid, vil, phosphate etc. | A33 |
| Expeller & expeller ring | Metal | B27: 23%-30% chrome white iron | ≥56 | Used for higher wear condition with pH between 5 and 12 | A05 |
| Grey iron | | | G01 |
| Stuffing Box | Metal | AB27: 23%-30% chrome white iron | ≥56 | Used for higher wear condition with pH between 5 and 12 | A05 |
| Grey iron | | | G01 |
| Door clamp plate, bearing house & base | Metal | Grey iron | | | G01 |
| Ductile iron | | | D21 |
| Shaft | Metal | Carbon steel | | | E05 |
| Shaft sleeve, lantern ring/resctrictor, neck ring, gland bolt | Stainless steel | 4Cr13 | | | C21 |
| 304 SS | | | C22 |
| 316 SS | | | C23 |
| Joint rings & seals | Rubber | Butyl | | | S21 |
| EPDM rubber | | | S01 |
| Nitrile | | | S10 |
| Hypalon | | | S31 |
| Neoprene | | | S44/S42 |
| Viton | | | S50 |
Performance table:
| Pump Model | Allowable | Clear Water Performance | |
| Max. Power | Capacity Q | Head | Speed | Max.Eff. | Impeller. Dia. (mm) |
| (kw) | m3/h | H (m) | n(r/min) | (%) |
| 6/4D-G | 60 | 36-250 | 5-52 | 600-1400 | 58 | 378 |
| 8/6E-G | 120 | 126-576 | 6-45 | 800-1400 | 60 | 378 |
| 10/8S-G | 560 | 216-936 | 8-52 | 500-1000 | 65 | 533 |
| 10/8F-G | 260 | 216-936 | 8-52 | 500-1000 | 65 | 533 |
| 10/8S-GH | 560 | 180-1440 | 24-80 | 500-950 | 72 | 711 |
| 12/10F-G | 260 | 360-1440 | 10-60 | 400-850 | 65 | 667 |
| 12/10G-G | 600 | 360-1440 | 10-60 | 400-850 | 65 | 667 |
| 12/10G-GH | 600 | 288-2808 | 16-80 | 350-700 | 73 | 950 |
| 14/12G-G | 600 | 576-3024 | 8-70 | 300-700 | 68 | 864 |
| 16/14G-G | 600 | 720-3600 | 18-44 | 300-500 | 70 | 1016 |
| 16/14TU-G | 1200 | 324-3600 | 26-70 | 300-500 | 72 | 1270 |
| 18/16G-G | 600 | 720-4320 | 12-48 | 250-500 | 72 | 1067 |
| 18/16TU-G | 1200 | 720-4320 | 12-48 | 250-500 | 72 | 1067 |
Construction Drawing
Selection & Performance Chart
