Bqw Explosion Proof Submersible Sewage Drainage Pump

An explosion-proof submersible sewage pump engineered for hazardous underground and petrochemical environments. The unit uses a flameproof, fully enclosed three-phase motor in a cast-steel housing with a stainless-steel rotor shaft, providing durable, reliable drainage where explosive gases (methane, coal-dust mixtures) or suspended coal particles are present.

Key features

• Flameproof construction with motor enclosure marked ExdIIBT4 and IP68 protection for continuous submerged operation.
• Robust materials: cast-steel motor housing and stainless-steel rotor shaft for corrosion and wear resistance.
• Compact, lightweight design for easy deployment and relocation in confined mine roadways and workfaces.
• Double-sided sealing design for long service life and improved leak protection.
• Designed for submerged operation without external priming or diversion systems.

Typical applications

• Mine roadway and coal-mine drainage (including areas with methane or coal-dust explosive atmospheres).
• Localized dewatering of working faces, bottom holes and sumps.
• Sewage and industrial wastewater drainage in petrochemical plants with explosive atmospheres.
• Engineering drainage and coal-preparation facilities.

Technical specifications (typical)

• Power supply: three-phase AC, 50 Hz; standard voltages 380 V or 660 V (±5%).
• Maximum submerged depth: 5 m.
• Maximum liquid temperature: 40 °C.
• Suitable liquid pH range: 6.5–10.
• Solid impurity content in pumped sewage: generally <2% (by volume).
• Maximum altitude for operation: 1,000 m.
• Enclosure protection: IP68.
• Flameproof marking: ExdIIBT4.

Materials & safety

• Motor housing: cast steel for structural strength in harsh conditions.
• Rotor shaft: stainless steel to resist corrosion from abrasive or contaminated waters.
• Flameproof and IP68 ratings make the pump suitable for continuous submerged use in classified explosive atmospheres.

If you require flow/head curves, available power ratings, or customized material options for specific site conditions, request the pump performance chart and available model variants to match your system requirements.