What are the operating conditions for the WQ(B) series explosion-proof submersible sewage pump?

The WQB series explosion-proof submersible sewage electric pumps are our company's latest explosion-proof product. Developed in compliance with GB3836.1-2010 "Explosive Atmospheres Part 1: General Requirements for Equipment" and GB3836.2-2010 "Explosive Atmospheres Part 2: Equipment Protected by Explosion-Proof Enclosures'd'", these pumps feature the explosion-proof certification ExdIIBT4/CT4. The entire product line has obtained explosion-proof certification, offering a complete range of models for convenient selection.

01 Main uses

The QB product is designed for wastewater discharge in IIB/IIC-class factories where flammable gas or steam-air explosive mixtures exist in temperature groups T1-T4. It is suitable for coal chemical plants, petrochemical facilities, municipal projects, urban industries, hospitals, hotels, and residential communities.

02 Usage Conditions

1. In cases where the explosion-proof marking of the product meets the explosion-proof requirements.

2. Power supply voltage: 380V,660V,1140V, three-phase, 50Hz.

3. Transport medium temperature: 0-40℃ (other hot water pump models are available for temperatures above this).

4. PH value of conveying medium: 5-9.

5. Medium density: ≤1100Kg/m³.

6. Maximum diving depth: 20m.

03 Explosion prevention points

When an explosive gas mixture in the explosion-proof submersible sewage pump motor causes an explosion, the explosion-proof enclosure must remain intact, and internal flames must not ignite external explosive environments containing one or multiple gases or vapors through the enclosure's mating surfaces. All components constituting the explosion-proof enclosure must undergo hydrostatic testing in accordance with GB3836.2-2000 regulations to ensure they can withstand maximum internal explosion pressure.

This explosion-proof submersible sewage electric pump is marked as ExdIIBT4/ExdIICT4, designed for use in IIB/IIC-class factories where combustible gas or steam-air explosive mixtures exist in temperature groups T1-T4. The unit's maximum surface temperature must comply with the specifications in the table below.

Product Structure Diagram