Sand& Gravel Pumps
Sand& Gravel Pumps Types
HDG Gravel pumps are equivalent with Warman G, GH pumps, this range is the world’s standard for dredge and gravel applications. The range provides excellent wear life while maintaining efficiency during the wear cycle and the best total operating cost. A wide variety of shaft seals provide a perfect fit for a range of applications.
Construction of this pump is of single casing connected by means of clamp bands and wide wet-passage. They are designed to handle very large particles for gravel and dredging operations, could continuously handle the most difficult higher abrasive slurry, containing solids too large to be pumped by a standard slurry pump.
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Sand Pumps-Product Line
Performance of Chart of HDG Sand&Gravel Pumps
| Model | Max. Power(kw) | Capacity Q | Head H(m) | Speed n(r/min) | Max.eff. η% | NPSH (m) | Impeller Dia(mm) |
|---|---|---|---|---|---|---|---|
| 6x4D-HDG | 60 | 36-250 | 5-52 | 36-250 | 58 | 2.5-3.5 | 378 |
| 8x6E--HDG | 120 | 126-576 | 6-45 | 800-1400 | 60 | 3-4.5 | 378 |
| 8x6S-HDG | 560 | 180-900 | 16-90 | 500-1100 | 68 | 3.5-4 | 610 |
| 10x8S-HDG | 560 | 216-936 | 8-52 | 500-1000 | 65 | 3-7.5 | 533 |
| 10x8F-HDG | 560 | 216-980 | 13-50 | 500-1000 | 62 | 3-7.5 | 533 |
| 10x8S-HDG | 560 | 180-1440 | 24-80 | 500-950 | 72 | 2.5-5 | 711 |
| 12x10F-HDG | 560 | 360-1512 | 11-58 | 400-850 | 62 | 2-4.5 | 667 |
| 12x10G-HDG | 600 | 360-1440 | 10-60 | 400-850 | 65 | 1.5-4.5 | 667 |
| 12x10TU-HDG | 1200 | 288-2808 | 16-80 | 350-700 | 73 | 2-10 | 950 |
| 14x12G-HDG | 950 | 504-3168 | 6-66 | 300-700 | 65 | 2-8 | 864 |
| 14x12TU-HDG | 1200 | 576-3024 | 8-70 | 300-700 | 68 | 2-8 | 864 |
| 16x14G-HDG | 600 | 720-3600 | 18-44 | 300-500 | 70 | 3-9 | 1016 |
| 16x14TU-HDG | 1200 | 324-3600 | 26-70 | 300-500 | 72 | 3-6 | 1270 |
| 18x16TU-HDG | 1200 | 720-4320 | 12-48 | 250-500 | 72 | 3-6 | 1067 |
1. Quantity range recommended: 50%Q’≤Q≤110%Q’ (Q’ Appropriate to capacity at
highest efficiency point).
2.NPSH: appropriate to point Q recommended at highest speed.
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Main Applications
Hedun No-slog Heavy Duty Slurry Pumps can Pump More than 19 kinds of Media
| Main Application | HDG Sand&Gravel Pumps |
|---|---|
| Sand & Gravel Dredging | |
| SAG Mill Charge | |
| Beach Restoration | |
| Coastal Protection | |
| Ecosystem Restoration | |
| Lake Dredging | |
| Land Reclamation | |
| Marina Dredging | |
| Mining Dredge | |
| Navigation Dredging | |
| Port and Harbor Dredging | |
| Reservoir Dredging | |
| River Dredging | |
| Mine Tailings Dredging | |
| Ball Mill Charge | |
| Rod Mill Charge | |
| Coarse sand | |
| Coarse tailings | |
| Phosphate Matrix | |
| Minerals Concentrate | |
| Heavy Media | |
| bottom/fly ash, lime grinding | |
| Oil Sands | |
| Mineral Sands | |
| Fine Tailings | |
| Phosphoric acid | |
| Coal | |
| Flotation | |
| Sugar beets | |
| Process Chemical | |
| FDG | |
| Wast Water |
Pump Features
BEARING ASSEMBLY & SHAFT
The shaft is designed with a short overhang to: Reduce shaft deflection and Minimise vibration.
– Provided with a hardened shaft sleeve to protect the shaft. – Bearing assembly is retained on a one-piece frame. – Grease-purged piston rings to help seal contaminates out of bearing housing.
IMPELLER
Enclosed impellers to maximise efficiency. – Pump-out vanes on both shrouds. – Minimises re-circulation. – Reduces stung box pressure. – High chrome liquid ends. – Interchangeable hard metal impellers.
– Impeller clearance is set by moving the bearing assembly. – High-efficiency impeller (optional).
SINGLE CASING WITH ASSEMBLY CLAMPS
– Easy assembly and disassembly of the liquid end. – Clamp design facilitates rotation of volute. – Large volute reduces friction and wear. – Minimal parts + simple design.
– Reduces or eliminates the need for gland service water. – Reduces sleeve wear and possible bearing contamination.
Advantage of Our Sand& Gravel Pumps
- Provides an environmentally superior dredging method to meet strict water quality standards.
- Very little turbidity or re-suspension of sediments at the suction head.
- Capable of high production rates. Comparable to much larger conventional suction dredges.
- Capable of passing large volumes of woody debris and other foreign material in sediments without clogging.
- High slurry density minimizes the volume of effluent to be treated and disposed of upland deposition of sediments.
- The capability of the technology to pump dense slurries long distances provides a pipeline alternative for transporting sediment to distant disposal sites.
- Following solution of initial start-up problems, the prototype dredge proved capable of sustained reliable operation.
- The discharge of sediment slurry into the water column resulted in low levels of turbidity and TSS, well within the limits of stringent water quality standards, without the use of a sediment containment curtain.
- Wide choice for packing way: Centrifugal seal, mechanical seal and packing seal are available.
- Now featuring Hedunpumps throatbush and impeller combination designed to enhance efficiency and improve wear performance
- The shaft seals could be adoptable of gland seal or expeller seal
- The gravel pump discharge can be positioned at interval of 45 degrees by request and oriented to any eight positions to suit installations and applications.
Dredging Cases
Our dredge pumps are typically mounted on a dredger or barge and is used to create a vacuum that sucks up the material from the bottom of the waterway and transports it to a disposal site.
Dredge pumps are typically high-volume, low-pressure pumps that are designed to handle large amounts of solids and debris. They can be either centrifugal or positive displacement pumps, depending on the specific application and the type of material being dredged.