BQS400-300 Mining Explosion-Proof Submersible Drainage Pump

The Dewater BQS400-300 Mining Explosion-Proof Submersible Drainage Pump is a high-performance, compact, and lightweight emergency drainage solution specially designed for underground coal mine applications. Driven by a high power-density permanent magnet motor and utilizing a through-flow forced cooling structure, this pump ensures efficient operation, even in the most demanding environments.

 

BQS400-300 :

 

 

Why Choose Mining Explosion-Proof Submersible Drainage Pump?

High Efficiency and Compact Design
The pump features a three-stage impeller with high single-stage head, reducing overall size and improving operational stability. The advanced hydraulic model, optimized via CFD software, ensures high efficiency.

Permanent Magnet Synchronous Motor
The motor offers high power density and is equipped with a forced water-cooling jacket to prevent overheating, enabling long-term continuous operation.

Variable Frequency Start
The Mining Explosion-Proof Submersible Drainage Pump uses a variable frequency drive for smooth start-up with low current impact, reducing stress on the power grid.

Intelligent Control System
The automatic variable frequency control system supports full-head operation, delivering maximum flow across different head conditions.

Explosion-Proof and Certified
Both the pump and control system are compliant with ExdI Mb explosion-proof standards and MA certification, ensuring safe operation in hazardous underground environments.

 

Technical Specifications:

 

Model	BQS400-300
Flow (m³/h)	400	Head(m)	300
Rated power (KW)	550	Voltage(V)	660
Outlet Diameter	DN200	Protection Level	IP68
Weight (kg)	1490	Insulation Grade	F
Explosion-proof Control Cabinet Power(KW)	560	Control Cabinet Weight(ton)	2.6

 

Explosion proof control cabinet:

 

Operating Conditions:

Power supply: 660V, 50Hz, within allowable voltage variation range

Water quality: Non-corrosive clean water, sand content ≤ 0.01%, pH 6.5–8.5

Water temperature: ≤ 30°C

Chloride content: ≤ 400 mg/L; H₂S content: ≤ 1.5 mg/L

Minimum submergence: ≥ 1 m; Max depth: ≤ 60 m

Installation: Vertical (horizontal use upon request)

 

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