Submersible Sand Pump – High-Performance & Abrasion Resistant Pumping Solutions

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SQGP(B)Q Type Unattended Amphibious Submersible Sand Pump

SQGP(B)Q type gas isolation submersible sand discharge pump adopts a semi-open impeller. The end face of the guide body at the mating surface with the impeller blade is provided with a vent hole. When the impeller enters the gas, the gas will be discharged along the vent hole to realize unattended operation and keep the pump running continuously. The conveyed medium is exported from the outer sleeve of the motor, and the motor is cooled by the conveyed medium, allowing the motor to run without flooding. This series of products have compact structure, convenient use and maintenance, good passability and wide operation range. Suitable for conveying sewage containing gravel and other solid particles.

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Description
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Product Introduction

The Submersible Sand Pump is engineered to excel in demanding industrial applications, combining patented innovation with rugged reliability. With over 31years of expertise in fluid dynamics and abrasive material handling, Shanglishi delivers cutting-edge solutions trusted by mining, dredging, and construction industries worldwide.
SQGP(B)Q type gas isolation submersible sand discharge pump adopts a semi-open impeller. The end face of the guide body at the mating surface with the impeller blade is provided with a vent hole. When the impeller enters the gas, the gas will be discharged along the vent hole to realize unattended operation and keep our sand suction pump running continuously. The conveyed medium is exported from the outer sleeve of the motor, and the motor is cooled by the conveyed medium, allowing the motor to run without flooding. This series of products have compact structure, convenient use and maintenance, good passability and wide operation range. Suitable for conveying sewage containing gravel and other solid particles.
SQGP(B)Q type gas isolation amphibious submersible sand pump is an independent product designed and developed by our company.
Patent number: ZL 202123102801.3, ZL 202123054344.5

Product Features

Inlet and outlet diameter	65-400mm (flange size conforms to GB/1724.16-2022)
Flow range	30-2000m³/h
Range of lift	6-260m
Speed	720,990,1480 and 2960r/min
Power	3-315KW
Temperature range	Maximum liquid temperature ≤ 40 ℃
Maximum working pressure	(Inlet pressure pumping pressure):1.0MPa(G)(Hsp≤ 75m) or 1.6MPa(G)(Hsp>75m) Special configuration up to 1.6MPa(G) or 2.5MPa(G) respectively
Material	high chromium alloy
Medium	Liquid containing solid particles such as sand, cinder and tailings can pass through the maximum particle diameter: 7-60mm (see technical standard for details)
Structural Design	Single-stage single-suction centrifugal pump, vertical installation

Shanglishi submersible sand pumps are powerful and efficient machines designed to handle the challenging task of pumping sand, slurry, and other abrasive materials in a wide range of industries. With their ability to operate fully submerged, these pumps offer unmatched convenience and performance in applications where traditional pumps fall short.

Innovative Design & Key Features about Our Unattended Amphibious Submersible Sand Pump

As a sea water draining sand submersible pump, the SQGP(B)Q series integrates a semi-open impeller and vent-hole-equipped guide body to automatically discharge gas, enabling unattended operation even in fluctuating conditions. Its amphibious design allows seamless transitions between submerged and dry environments, making it ideal for river sand suction pump operations.

Key features:

Gas Isolation Technology: Vent holes prevent gas buildup, ensuring continuous runtime (Patent ZL 202123102801.3).
High-Chrome Alloy Construction: Resists wear from sand, cinder, and tailings (max. particle size: 60mm).
Dual Cooling System: Motor stays dry while medium-cooled for flood-free operation (Patent ZL 202123054344.5).
Non-Clogging Impeller: Wide passages handle solids effortlessly, reducing downtime.

How Shanglishi Achieves True Unattended Operation:

Patented Gas Isolation Technology (Patent ZL 202123102801.3):
- The pump features a semi-open impeller combined with a strategically designed guide body.
- Vent holes are integrated into the mating surface between the impeller blades and the guide body.
- Mechanism: When gas (air) enters the impeller zone – a common occurrence causing shutdowns in traditional pumps – it is automatically discharged through these vent holes.
- Result: The pump prevents gas locking (where trapped gas stops flow and overheats the pump), enabling it to run continuously without operator intervention, even in fluctuating conditions with entrained air or gas pockets.
Sealed Motor Cooling System (Patent ZL 202123054344.5):
- The motor is isolated within a sealed chamber.
- The pumped medium flows around the outer sleeve of the motor, effectively cooling it.
- Result: The motor operates dry and flood-proof, eliminating the risk of motor flooding damage common in submerged environments. This robust cooling allows sustained operation without manual oversight for cooling or protection.
Non-Clogging Design & Wide Passability:
- The pump's hydraulic design, including the semi-open impeller and optimized flow paths, offers excellent passability.
- It efficiently handles large solids (up to 60mm) and high concentrations of abrasive particles like sand, gravel, cinder, and tailings without clogging.
- Result: Minimizes downtime caused by blockages, further supporting unattended operation.

The Efficiency & Cost Advantages of Unattended Operation Compared to the General Submersible Sewage Pumps:

Shanglishi's SQGP(B)Q pumps deliver tangible benefits by eliminating the need for constant supervision:

Reduced Labor Costs:
- Eliminates the need for operators to monitor pumps constantly for gas lock, overheating, or blockages.
- Significantly lowers labor expenditure, especially in remote or harsh locations like dredging sites or deep mines.
Maximized Uptime & Production:
- Continuous pumping capability ensures critical processes (dredging, dewatering, slurry transfer) run non-stop.
- Avoids costly production interruptions caused by pump shutdowns due to gas ingestion or minor blockages.
- Higher volumes of material moved per operational period.
Lower Maintenance Costs & Downtime:
- Reduced Failure Rate: The gas isolation and flood-proof cooling systems significantly decrease failures related to gas lock and motor flooding.
- Less Frequent Interventions: With fewer failures and no need for constant monitoring, maintenance intervals are extended.
- Faster Maintenance: The pump's compact and accessible design simplifies servicing when required, minimizing downtime (as evidenced by field reports showing maintenance time reductions of up to 50%).
Enhanced Operational Safety:
- Minimizes the need for personnel to enter potentially hazardous environments (deep pits, unstable dredge sites, confined spaces) for frequent pump checks or restarts.
Operational Flexibility:
- Enables deployment in locations where constant human presence is impractical, unsafe, or too costly.

Advantages of Submersible Sand Pumps

Deep Submergence Capability: These sea water draining sand submersible pumps can operate at significant depths, making them suitable for underwater operations such as sand dredging and excavation.

Reduced Cavitation Risk: The submersible design ensures that the pump is always in contact with the fluid, minimizing the risk of cavitation and increasing pump efficiency.

High Solids Handling Capacity: Submersible sand pumps can handle a higher concentration of solids than many other types of pumps, ensuring smooth operation in highly abrasive environments.

Contact Shanglishi now, our dedicated team members will be happy to answer your questions.

Product Model

1	2	3
Motor stator rotor	Isolated oil chamber	Rubber diaphragm
4	5	6
Gas isolation structure	Guard	Pump cover
7	8	9
Impeller	guide allograft	Pump seat
10	11	12
Imported filter screen	Vent hole	inducer

Installation method

1. Mobile hard pipe installation

The Unattended Amphibious Submersible Sand Pump is supported by its base, and the hard pipe joint is connected to the pipeline system.

2. Mobile hose installation

The pump is supported by its base, and the hose connector is connected with the water outlet hose. It is multi-purpose and easy to install. The river sand suction pump can be easily moved from one sewage well to another.

3. Fixed dry installation
Can withstand flooding, for wet/dry well or pipeline connection of the pump system, suction port and drain port a flange and pipe connection, vertical installation. If this installation is selected, it must be equipped with a cooling system.
4. Fixed wet installation
The pump is supported by a base and fixed at the bottom of the sewage well. The drain port is connected with the pipeline. The vertical installation water outlet hose is connected. It is multi-purpose and easy to install. The sand suction pump can be easily moved from one sewage well to another.

Customization and Solutions

We offer customized solutions to meet specific project requirements. Whether it's tailored impeller designs, material upgrades, or specialized motors, these pumps can be adapted to tackle even the most demanding applications.

Industry Applications of Submersible Sand Pumps

Shanglishi submersible sand pumps are widely used in industries such as:

Mining: Extracting sand and minerals from underwater deposits.

Dredging: Removing sand from riverbeds, lakes, and other water bodies.

Construction: Pumping slurry and sand in construction projects such as tunnels and foundations.

Oil and Gas: Handling drilling mud and removing sand from oil platforms.

Used as Municipal Engineering, Urban Industrial Drainage Submersible Sand Pump

It can be applied to the discharge of solid particle-containing media such as mine construction.

Used as Irrigation Submersible Sand Pump and Other Drainage Submersible Sand Pump

Used as Petrochemical Submersible Sand Pump and Other Acid-Base Medium Emissions Submersible Sand Pump

Used as River Dredging Submersible Sand Pump, Sand Discharge Pump, etc.

Can be used for the discharge of sewage from hospitals, hotels, residential areas, etc.

Application case of SQGP(B)Q type gas isolation seal unattended amphibious submersible sand pump in Indonesian sewage treatment plant

Introduction

In the field of modern sewage treatment, improving the efficiency and reliability of the pump is the key. SQGP(B)Q type gas isolation seal unattended amphibious submersible sand pump has become an ideal choice for a sewage treatment plant in Indonesia due to its unique design and superior performance. This case will introduce the application of the pump and its technical advantages in detail.

Product features

The SQGP(B)Q type pump adopts a semi-open impeller design, which can effectively treat sewage containing sand and other solid particles. The end face of the impeller is provided with a vent hole at the mating surface with the impeller blade. When the gas enters the impeller, the gas will be discharged along the vent hole, thereby realizing the unattended state and maintaining the continuous operation of the pump. This design greatly reduces manual intervention and improves work efficiency.

Application site

In a sewage treatment plant in Indonesia, the pump is used to treat sewage containing a large amount of solid particles. According to actual data on site, the pump performed well during operation and can continuously transport sewage up to 500 cubic meters/hour with a solid particle concentration of 10%. Compared with traditional pumps, the failure rate of SQGP(B)Q pumps is reduced by 30% and maintenance costs are reduced by 20%.

Cooling system

The motor of the pump is cooled by the conveyed medium, allowing the motor to operate without flooding. This design ensures the stability and safety of the motor under various working conditions. In actual application, the motor temperature is always kept within the safe range, and there is no overheating even under high load.

Structure and maintenance

The SQGP(B)Q pump has a compact structure and is easy to use and maintain. The pump removal and installation process is simple, and on-site maintenance personnel only need a few tools to complete daily inspection and maintenance. According to on-site feedback, the maintenance time is shortened by an average of 50%, which provides a guarantee for the operational efficiency of the sewage treatment plant.

Operating range and performance

This series of pumps has a wide operating range and is suitable for a variety of sewage treatment scenarios. According to on-site tests, the pump head can reach 20 meters, the flow rate remains stable, and it can maintain good passability under different working conditions. This allows the SQGP(B)Q pump to operate stably when facing complex sewage components.

Conclusion

The successful application of SQGP(B)Q type gas isolation sealed unattended amphibious submersible sand pump in Indonesian sewage treatment plant fully demonstrates its advantages in high solid particle sewage treatment. Through the comparison of actual application data, it is shown that the pump has significantly improved in terms of operating efficiency, maintenance cost and reliability, and has become an important equipment in the field of sewage treatment. In the future, the pump is expected to be promoted and applied in more sewage treatment projects, making greater contributions to environmental protection.