Compared with similar domestic products, BQS series mining explosion-proof sewage and sand discharge submersible electric pumps have the advantages of safety and reliability, lightness and practicality, good sewage and sand discharge performance, long service life, reasonable model spectrum, and easy selection.
Model :
BQS60-80-30/NExport caliber (DN) :
100Rated flow (m³/h) :
60Rated head (m) :
80Motor speed (rpm) :
3000Motor power (kw) :
30Material :
QT600-3 nodular cast ironFOB Price （USD$） :
1700BQS series Mining explosion-proof submersible drainage pump
Product Introduction
The BQS series of explosion-proof submersible electric pumps for mining sewage and sand removal offer a comprehensive range of specifications, with power ranging from 2.2kW to 315kW, flow rates from 10m/h to 2500m/h, and lifts from 7m to 700m. All products offer full lift and zero overload. The company's relentless technological innovation has addressed key technical challenges in sewage and sand removal submersible electric pumps, including product structure, parameter optimization, manufacturing processes, operating efficiency, sealing and leak prevention, and material application. The company holds over 20 patents and utilizes the latest research findings to develop a mature motor and pump manufacturing process. Compared to similar domestic products, these pumps offer advantages such as safety, reliability, portability, practicality, excellent sewage and sand removal performance, long service life, a comprehensive product portfolio, and easy selection.
Main Applications
These pumps are suitable for use in underground coal mines where methane (commonly known as gas) and coal dust explosion hazards exist. They are used to transport mixed wastewater containing insoluble solids such as mud, sand, coal slime, coal stone, coal slag, and fibrous matter. It is also suitable for discharging wastewater, rainwater, and sewage containing solid particles and long fibers in buildings, hospitals, residential areas, municipal engineering projects, road traffic and construction, factory sewage treatment, and small-scale sewage treatment.
Environmental Requirements
1. Power supply: 380V, 660V, or 1140V three-phase, 50Hz.
2. Medium temperature generally not exceeding 40°C, pH 5-9, and medium density ≤11kN/m³.
3. Submersible depth not exceeding 5 meters based on the impeller center.
4. Special designs are available upon request to accommodate highly corrosive fluids.
5. The diameter of solids in the medium must comply with MT/T671-2005. Please indicate any special requirements when ordering.
6. MT818.5-2009 flame-retardant cable for coal mines is used.
Features
1. Model Selection: Optimized performance, smooth and clog-free operation, and strong sewage and sand removal capabilities. The pump has a zero-overload (full head) characteristic, meaning the input power does not exceed the power of the matching motor at any operating point. Suitable for various applications in coal mines, a single machine can be used for multiple purposes.
2. Mechanical Seal Improvement: Utilizes independent tandem mechanical seals and double-end mechanical seals.
3. Structural Optimization: The structural design enhances mechanical seal sealing, smooth operation, and increased reliability. The optimized design is lighter, more practical, and has low energy consumption, allowing for long-term dry operation in dry conditions.
4. With an IPx8 motor protection rating, the submersible motor offers excellent cooling, lower temperature rise than conventional motors, and improved durability. Class F insulation extends the motor's service life.
Main Technical Parameters
Flow：10-2000m³/h
Head：10-800m
Power：1.5-315kW
Outlet diameter：40-350mm
Voltage： 380/660V，660/1140V，400V，440V，460V，Customizable
Model Description and Cable Description
BQS series Semi built-in structure
Structural advantage
•The flow parts adopt QBQ surface treatment process,which has excellent wear and corrosion resistance.
•The thickened impeller,pump body,and pump cover effectively extend the service life of the components.
•Suitable for long-term use in environments with corrosive liquids and abrasive particles(such as sediments and gravel).
•The bottom inlet and bottom outlet design ensures strong clogging resistance and high flow capacity,making it suitable for a wider range of applications.
•Simple strcuture,lightweight,easy to install and maintain.
•The pump equipped with cooling jacket,which has high heat dissipation efficiency,could not fully submerged in the medium.
 |
 |
| 1 | Pressing sleeve |
| 2 | Pressing tablet |
| 3 | Outlet box |
| 4 | Terminal board |
| 5 | Upper bearing housing |
| 6 | Pump casing |
| 7 | Lower bearing |
| 8 | Lower bearing housing |
| 9 | Mechanical seal |
| 10 | Seal chamber cover |
| 11 | Volute |
| 12 | Cable |
| 13 | Wiring terminals |
| 14 | Upper bearing |
| 15 | Rotor |
| 16 | Stator winding |
| 17 | Pump casing |
| 18 | Mechanical oil |
| 19 | Wear ring of impeller |
| 20 | Impeller |
| 21 | Pump cover |
| 22 | Base |
BQS seriesBuilt-in sturcture
Structural advantage
•Standard pumps are made of QT600-3 nodular cast iron,to ensure long-term durability；
•The mechanical seals have high pressure resistance,which enables pumps to submerged deeper.
•The pump equipped with cooling jacket,could not fully submerged in the medium,the flow parts below the motor,water cooling the motor during the operation extending service life and enabling work at the low water level.
•The motor is cooled by the pumped water to ensure safe operation.
•The design of the top outlet is more space saving.
•Sealed motors available with optional built-in thermal protection.
•Sealed pressure relief port prevents pumping pressure from acting on the shaft seal.
 |
 |
| 1 | Pressing sleeve |
| 2 | Pressing tablet |
| 3 | Outlet box |
| 4 | Terminal board |
| 5 | Upper bearing housing |
| 6 | Pump casing |
| 7 | Lower bearing |
| 8 | Lower bearing housing |
| 9 | Mechanical seal |
| 10 | Seal chamber cover |
| 11 | Volute |
| 12 | Cable |
| 13 | Wiring terminals |
| 14 | Upper bearing |
| 15 | Rotor |
| 16 | Stator winding |
| 17 | Pump casing |
| 18 | Mechanical oil |
| 19 | Wear ring of impeller |
| 20 | Impeller |
| 21 | Pump cover |
| 22 | Base |
BQS seriesExternal mounted sturcture
Structural advantage
•The flow parts adopt QBQ surface treatment process,which has excellent wear and corrosion resistance.
•The thickened impeller,pump body,and pump cover effectively extend the service life of the components.
•Suitable for long-term use in environments with corrosive liquids and abrasive particles (such as sediments and gravel).
•The bottom inlet and bottom outlet design ensures strong clogging resistance and high flow capacity,making it suitable for a wider range of applications.
•Simple strcuture,lightweight,easy to install and maintain.
 |
 |
| 1 | Pressing sleeve |
| 2 | Pressing tablet |
| 3 | Outlet box |
| 4 | Terminal board |
| 5 | Upper bearing housing |
| 6 | Pump casing |
| 7 | Lower bearing |
| 8 | Lower bearing housing |
| 9 | Mechanical seal |
| 10 | Seal chamber cover |
| 11 | Volute |
| 12 | Cable |
| 13 | Wiring terminals |
| 14 | Upper bearing |
| 15 | Rotor |
| 16 | Stator winding |
| 17 | Mechanical oil |
| 18 | Impeller |
| 19 | Base |
BQS seriesMulti-stage structure for high-head submersible pump
Structural advantage
The flow parts adopts a lower support structure,combined with a multi-stage impeller arrangement, ensuring that the pump meets the requirements for high head and large flow under various installation conditions.
The flow parts adopt QBQ surface treatment process,which has excellent wear resistance and corrosion resistance.
The mechanical seals have high-pressure resistance,which enables pumps to submerged deeper.
The pump equipped with cooling jacket,could not fully submerged in the medium.The flow parts below the motor,water cooling the motor during the operation,extending service life and enabling work at the low water level.
The design of the top outlet is more space saving.
The motor is optional with overheat protection.
There is a pressure relief hole on the pump,which could release the pressure exerted by the medium on the shaft seal.
 |
 |
| 1 | Cable |
| 2 | Pressing tablet |
| 3 | Pressing sleeve |
| 4 | Sealing ring |
| 5 | Connecting pressure sleeve |
| 6 | Pressure plate |
| 7 | Connecting plate |
| 8 | Outlet box |
| 9 | Upper bearing housing |
| 10 | Wiring terminals |
| 11 | Upper bearing |
| 12 | Rotor |
| 13 | Stator winding |
| 14 | Pump casing |
| 15 | Shell |
| 16 | Nameplate |
| 17 | Bearing pressure plate |
| 18 | Lower bearing |
| 19 | Spacer |
| 20 | Lower bearing housing |
| 21 | Mechanical seal |
| 22 | Mechanical oil |
| 23 | Seal chamber cover |
| 24 | Volute |
| 25 | Balancing drum |
| 26 | Balancing sleeve |
| 27 | Guide vane |
| 28 | Rear impeller |
| 29 | Pump body |
| 30 | Guide vane wear ring |
| 31 | Front impeller |
| 32 | Wear ring of impeller |
| 33 | Pump cover |
| 34 | Round nut |
| 35 | Lower support seat |
| 36 | Mechanical seal |
| 37 | Base |
| 38 | Bearing |
| 39 | Lower support cover |
BQS seriesAmphibious explosion-proof submersible pump
Structural advantage
Exdl explosion-proof standard,safe and reliable.
The motor is water-cooled,allows dry start and idle running.
Flexible installation methods:Submersible and dry installation available.
Unique serial connection interface design,supports serial installation.
Double mechanical seals,enhanced seal reliability.
Unique pressure relief device and axial force balance,reduced bearing pressure.
Wide flow channel design for impeller and volute,excellent anti-clogging performance.
Adopting wear-resistant materials,offering strong resistance to abrasion from sand and silt.
 |
 |
| 1 | Pressing sleeve |
| 2 | Pressing tablet |
| 3 | Pressing plate |
| 4 | Connection plate |
| 5 | Cable |
| 6 | Outlet box |
| 7 | Upper bearing housing |
| 8 | Stator winding |
| 9 | Rotor |
| 10 | Pressing plate of bearing |
| 11 | Lower bearing housing |
| 12 | Mechanical seal |
| 13 | Seal Chamber Cover |
| 14 | Volute |
| 15 | VoluteWear ring |
| 16 | Wiring terminal |
| 17 | Upper bearing |
| 18 | Pump casing |
| 19 | Shell |
| 20 | Lower bearing |
| 21 | Wear ring of impeller |
| 22 | Final impeller |
| 23 | Guide vane |
| 24 | Impeller |
| 25 | Pump body |
| 26 | Pump cover |
| 27 | Base |
Performance parameter
| No. | Model | Rated(m³/h) | Rated head(m) |
Rated power（kW） |
Rated voltage(V) | Rated current(A) | Synchronous speed(r/min) |
Efficiency(%) | Maximum diameter of passed particles(mm) |
Outlet diameter(mm) |
| 1 | BQS10-23-1.5 | 10 | 23 | 1.5 | 380/660or660/1140 | 365/2.11or2.11/1.22 | 3000 | 289 | 6 | 50 |
| 2 | BQS15-20-1.5 | 15 | 20 | 1.5 | 380/660or660/1140 | 365/2.11or2.11/1.22 | 3000 | 339 | 6 | 50 |
| 3 | BQS10-28-2.2 | 10 | 28 | 2.2 | 380/660or660/1140 | 512/2.95or2.95/1.70 | 3000 | 292 | 15 | 50 |
| 4 | BQS35-7-2.2 | 35 | 7 | 2.2 | 380/660or660/1140 | 512/2.95or2.95/1.70 | 3000 | 378 | 15 | 50 |
| 5 | BQS15-22-2.2 | 15 | 22 | 2.2 | 380/660or660/1140 | 512/2.95or2.95/1.70 | 3000 | 339 | 15 | 50 |
| 6 | BQS25-10-2.2 | 25 | 10 | 2.2 | 380/660or660/1140 | 512/2.95or2.95/1.70 | 3000 | 37.6 | 15 | 50 |
| 7 | BQS25-15-3/8 | 25 | 15 | 3 | 380/660or660/1140 | 667/3.84or3.84/2.22 | 3000 | 38 | 15 | 40 |
| 8 | BQS15-25-3/8 | 15 | 25 | 3 | 380/660or660/1140 | 667/3.84or3.84/2.22 | 3000 | 31 | 15 | 40 |
| 9 | BQS35-15-3 | 35 | 15 | 3 | 380/660or660/1140 | 667/3.84or3.84/2.22 | 3000 | 41 | 11 | 40 |
| 10 | BQS40-10-3 | 40 | 10 | 3 | 380/660or660/1140 | 667/3.84or3.84/2.22 | 3000 | 41.7 | 11 | 80 |
| 11 | BQS50-15-4 | 50 | 15 | 4 | 380/660or660/1140 | 879/5.07or5.07/2.92 | 3000 | 43.3 | 10 | 80 |
| 12 | BQS15-30-4 | 15 | 30 | 4 | 380/660or660/1140 | 879/5.07or5.07/2.92 | 3000 | 31 | 10 | 40 |
| 13 | BQS20-28-4/B | 20 | 28 | 4 | 380/660or660/1140 | 879/5.07or5.07/2.92 | 3000 | 34.7 | 10 | 40 |
| 14 | BQS22-22-4/B | 22 | 22 | 4 | 380/660or660/1140 | 879/5.07or5.07/2.92 | 3000 | 37.6 | 10 | 40 |
| 15 | BQS35-18-4 | 35 | 18 | 4 | 380/660or660/1140 | 879/5.07or5.07/2.92 | 3000 | 41.5 | 10 | 40 |
| 16 | BQS30-30-5.5 | 30 | 30 | 5.5 | 380/660or660/1140 | 116.5/6.7or6.7/3.87 | 3000 | 37.9 | 18 | 50 |
| 17 | BQS70-18-5.5 | 70 | 18 | 5.5 | 380/660or660/1140 | 116.5/6.7or6.7/3.87 | 3000 | 45.9 | 10 | 100 |
| 18 | BQS20-40-5.5/B | 20 | 40 | 5.5 | 380/660or660/1140 | 116.5/6.7or6.7/3.87 | 3000 | 335 | 5 | 40 |
| 19 | BQS40-20-5.5/B | 40 | 20 | 5.5 | 380/660or660/1140 | 116.5/6.7or6.7/3.87 | 3000 | 43 | 10 | 40 |
| 20 | BQS25-30-5.5/B | 25 | 30 | 5.5 | 380/660or660/1140 | 116.5/6.7or6.7/3.87 | 3000 | 355 | 10 | 40 |
| 21 | BQS15-55-2/5.5/B | 15 | 55 | 5.5 | 380/660or660/1140 | 116.5/6.7or6.7/3.87 | 3000 | 315 | 10 | 40 |
| 22 | BQS30-36-7.5 | 30 | 36 | 7.5 | 380/660or660/1140 | 15.7/9.1or9.1/5.25 | 3000 | 382 | 18 | 50 |
| 23 | BQS80-16-7.5 | 80 | 16 | 7.5 | 380/660or660/1140 | 15.7/9.1or9.1/5.25 | 3000 | 469 | 30 | 100 |
| 24 | BQS75-25-7.5 | 75 | 25 | 7.5 | 380/660or660/1140 | 15.7/9.1or9.1/5.25 | 3000 | 46.5 | 30 | 100 |
| 25 | BQS140-7-7.5 | 140 | 7 | 7.5 | 380/660or660/1140 | 15.7/9.1or9.1/5.25 | 3000 | 45.1 | 30 | 100 |
| 26 | BQS100-12-7.5 | 100 | 12 | 7.5 | 380/660or660/1140 | 15.7/9.1or9.1/5.25 | 3000 | 44.3 | 30 | 100 |
| 27 | BQS20-50-7.5/B | 20 | 50 | 7.5 | 380/660or660/1140 | 15.7/9.1or9.1/5.25 | 3000 | 335 | 10 | 40 |
| 28 | BQS15-70-2/7.5/B | 15 | 70 | 7.5 | 380/660or660/1140 | 15.7/9.1or9.1/5.25 | 3000 | 32 | 5 | 40 |
| 29 | BQS100-10-7.5/B | 100 | 10 | 7.5 | 380/660or660/1140 | 15.7/9.1or9.1/5.25 | 3000 | 29.5 | 5 | 40 |
| 30 | BQS50-30-7.5/B | 50 | 30 | 7.5 | 380/660or660/1140 | 15.7/9.1or9.1/5.25 | 3000 | 44 | 10 | 40 |
| 31 | BQS40-38-7.5/B | 40 | 38 | 7.5 | 380/660or660/1140 | 15.7/9.1or9.1/5.25 | 3000 | 38.4 | 10 | 40 |
| 32 | BQS20-68-2/11/N | 20 | 68 | 11 | 380/660or660/1140 | 238.2/3.79or3.79/7.95 | 3000 | 354 | 10 | 65 |
| 33 | BQS30-58-2/11/N | 30 | 58 | 11 | 380/660or660/1140 | 238.2/3.79or3.79/7.95 | 3000 | 39.4 | 7 | 65 |
| 34 | BQS40-40-11/N | 40 | 40 | 11 | 380/660or660/1140 | 238.2/3.79or3.79/7.95 | 3000 | 37.7 | 7 | 65 |
| 35 | BQS150-15-11/N | 150 | 15 | 11 | 380/660or660/1140 | 238.2/3.79or3.79/7.95 | 3000 | 46.1 | 30 | 100 |
Compared with similar domestic products, BQS series mining explosion-proof sewage and sand discharge submersible electric pumps have the advantages of safety and reliability, lightness and practicality, good sewage and sand discharge performance, long service life, reasonable model spectrum, and easy selection.
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Compared with similar domestic products, BQS series mining explosion-proof sewage and sand discharge submersible electric pumps have the advantages of safety and reliability, lightness and practicality, good sewage and sand discharge performance, long service life, reasonable model spectrum, and easy selection.
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IPv6 network supported.