6 / 4 D - G Dredging Sand Gravel Pump , Large Capacity Sand Pump
Product Introduction
G series gravel pumps are mainly used for continuous conveying of
strong abrasive materials that are too large for general slurry
pumps to be transported, such as dredger dredging, river or seabed
large particle sand mining, mining and metal smelting blasting.
Wait.
G, GH series sand pumps are horizontal, single pump shell
centrifugal pumps, of which GH type is a high lift gravel pump.
G, GH series gravel pump adopts a single pump shell structure with
a sideband of the cassette, and the overflow passage is wide. Its
flow-through parts are made of hard nickel, high chromium and other
wear-resistant materials. The discharge direction of the pump can
be anywhere in 360°, which has the advantages of convenient
installation, good cavitation performance and abrasion resistance.
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
Sealing type
Expeller seal: the shaft seal type of the pump mainly has a packing
seal and a counter impeller seal. The auxiliary impeller seal uses
the pressure seal generated by the impeller and the auxiliary
impeller in series, and is generally used in the case of press-in
ore feeding, but the ore pressure value is given. Not more than 10%
of the pump outlet pressure value. This type of seal can be used
without shaft seal water (by the oil cup on the pump body to
regularly add grease), without diluting the slurry; however, it
will increase the power consumption (generally about 5% of the
rated power).
Packing seal: It is a common type of shaft seal. It is suitable for
various working conditions. It can be matched with special
materials such as PTFE filler and graphite filler. It can be used
under corrosive or high temperature conditions. It has the
advantages of simple structure and convenient maintenance. However,
it is necessary to add shaft sealing water, and sufficient water
pressure and water volume should be ensured. The shaft sealing
water pressure is 35 kPa (0.35 kg/cm2) of the pump outlet pressure,
and the shaft sealing water quantity depends on the size of the
bracket.
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
