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.

Sand& Gravel Pumps