Explosion-Proof Pumps for Mining and Industrial Applications

BQW Series Mine-Use Flameproof Submersible Sewage Pumps

• Complies with MT/T 671–2005 "Flameproof Submersible Electric Pumps for Coal Mines".
• Explosion-proof performance meets GB 3836.1–2000 "Explosive Gas Atmosphere Electrical Equipment – Part 1: General Requirements" and GB 3836.2–2000 "Explosive Gas Atmosphere Electrical Equipment – Part 2: Flameproof Enclosure 'd'".
• Explosion-Proof Marking: EXd I.
• Compact structure with easy maintenance and operation.

WQB Series Flameproof Submersible Sewage Pumps

• Features advanced flameproof technology in motor design.
• Explosion-proof performance conforms to GB 3836.1–2000 and GB 3836.2–2000, with Explosion-Proof Marking EXd II BT4.
• Compact structure with user-friendly maintenance.

BQW Series Flameproof Submersible Sewage Pumps

Mining Applications: Designed for coal mines with methane or coal dust explosion risks.

Environments: Drainage in mining faces, tunnels, sump pits, and localized water accumulation areas.

Media: Sewage containing rock cuttings, coal particles, sand, and other solid particles.

WQB Series Flameproof Submersible Sewage Pumps

Industrial Applications: Factories with IIB-grade explosive environments (T1–T4 temperature groups).

Environments: Sewage discharge in municipal engineering, urban industrial/commercial facilities, hospitals, hotels, residential areas, and agricultural irrigation.

Media: Clear water with solid particles (e.g., industrial wastewater, stormwater).

BQW Series Flameproof Submersible Sewage Pumps

• Installation Depth: Operable in shallow water (minimum water level above suction strainer) or submerged (maximum depth ≤5 meters).
• Medium Temperature: ≤40°C.
• pH Range: 4–10.
• Solid Content: ≤2% by volume.
• Ambient Temperature: 0–40°C.
• Particle Size: Maximum particle diameter ≤50% of the smallest flow passage dimension.

WQB Series Flameproof Submersible Sewage Pumps

• Maximum Medium Temperature: 40°C.
• pH Range: 5–9.
• Solid Particle Size: φ7–φ250 mm (see technical standards).
• Maximum Submersion Depth: 10 meters.
• Start Interval: ≥10 minutes between consecutive starts.