QJS10/8G-G

The QSG submersible gravel pump is a heavy-duty, fully submersible slurry pump designed for dredging, mining, and sand/gravel extraction. Unlike horizontal pumps, it operates underwater, making it ideal for sump cleaning, river dredging, and underwater excavation.

Email:

YUNQUANPUMP@hbyqby.cn

Hotline:

86-18730251111

Inquire Now

Key Features

✔ Fully Submersible – Can operate underwater (up to 10–20m depth, depending on model).
✔ High Abrasion Resistance – Made of high-chrome alloy (Cr27, Cr30) or rubber-lined for wear protection.
✔ Large Solids Handling – Capable of pumping gravel, stones, and solids up to 50–80mm.
✔ Agitator Option – Some models include a built-in agitator to stir settled solids.

QSG Submersible gravel pump

QSG Submersible Gravel Pump - Technical Specifications & Features

The QSG submersible gravel pump is a heavy-duty, fully submersible dredge pump designed for sand, gravel, and high-solid slurry applications in mining, dredging, and construction.

Key Features

✔ Fully Submersible – Can operate underwater (typically 5–25m submersion depth).
✔ High Chrome Alloy Construction – Impeller & volute made of Cr27, Cr30, or A49 alloy for extreme wear resistance.
✔ Large Solids Handling – Passes 50–100mm rocks/gravel (depends on model).
✔ Agitator Option – Some models feature rotating agitators to prevent solids settling.
✔ Robust Seal System – Double mechanical seals + oil chamber for underwater reliability.
✔ Explosion-Proof Motor – Available for hazardous environments (coal mines, oil sands).

Typical Applications

River & Sea Dredging – Sand extraction, sediment removal.

Mining & Tailings – Slurry pumping in gold, iron ore, and coal mines.

Construction Dewatering – Handling gravel-laden water in tunnels & foundations.

Sand Washing Plants – Recirculating abrasive slurries.

Technical Specifications

Parameter	Range
Flow Rate	50–1500 m³/h (220–6,600 GPM)
Head	10–60m (33–200 ft)
Max. Solids	Up to 70% by weight
Particle Size	Up to 100mm (4")
Motor Power	7.5–400 kW (10–530 HP)
Voltage	380V, 415V, 660V, 3-phase
Submersion Depth	Up to 25m (special models)

Comparison: QSG vs. Standard Submersible Pumps

Feature	QSG Gravel Pump	Standard Submersible Pump
Solids Handling	Up to 100mm gravel	Max 10–20mm solids
Wear Resistance	High-chrome alloy	Cast iron/stainless steel
Agitator Option	Yes (prevents clogging)	Rarely available
Typical Use	Dredging, mining	Sewage, drainage