WQB anti riot unobstructed submersible pump

Product Overview

WQB, QWB, BQW, BWQ explosion-proof and unobstructed submersible sewage pumps are new explosion-proof equipment designed and produced based on international advanced explosion-proof submersible sewage pump technology and national standards. The pump is a submersible sewage pump consisting of a flameproof electric motor and a coaxial lower pump, with a shell protection level of IP68. It is suitable for use in industries such as coal mines, chemicals, and petroleum where there are explosive gas mixtures of methane or coal dust

Full emission and use in other explosion-proof places. Solved the danger of ordinary submersible sewage pumps without special explosion-proof devices, the inability of concentrated slurry pumps to pump large volume particles, and the problem of easy blockage of sewage pumps.

Structural features:

The explosion-proof motor is located at the upper part of the electric pump, and the insulation level of the explosion-proof motor is F. The shaft seal is composed of a rotary sealing ring and a double end mechanical seal. The rotary sealing ring can prevent mud from entering and reduce pump pressure. It directly acts as a sealing defense line on the mechanical seal. The double end mechanical seal is divided into two groups, with the initial seal on the pump side used to seal sewage and the secondary seal on the motor side used to seal lubricating oil leakage. The entire set of mechanical seals is immersed in No. 20 turbine oil for cooling and lubrication purposes.

Explosion proof points:

1. When the explosive mixture inside the electric pump produces an explosion, the explosion-proof shell is not damaged, and the internal explosion cannot cause an external explosive mixture explosion through the explosion-proof joint surface.

2. The components that make up the explosion-proof shell shall be subjected to hydrostatic testing one by one in accordance with the provisions of GB3836, items 1, 2, and 3, to ensure that they can withstand the maximum explosive pressure inside.

3. The explosion-proof joint surfaces, length gaps, and roughness between each component comply with the provisions of GB3836.2.

4. The bolts connecting the explosion-proof shell are equipped with anti loosening spring washers. The bolt head is located inside the protective ring to prevent self detachment.

5. The machine base, upper cover, shaft, front axle cover, junction box cover, junction seat, junction screw, and junction sleeve are all explosion-proof parts. Comes with a 10 meter explosion-proof cable randomly.

Usage conditions:

1. Altitude not exceeding 1000 meters;

2. The water temperature shall not exceed 40 ℃;

3. The pH value of water quality is 6-9;

4. The power supply voltage is 220V/380V/440V/660V;

5. Frequency 50HZ-60HZ;

6. The solid particles and fibers contained shall not exceed the specified conditions;

7. Various types of contaminated water containing specified volumes of soft materials and high viscosity;

8. The working method is a continuous quota based on the continuous work system (SI).

Model meaning:

40 QW、WQ P B 15 – 30 – 2.2

40- Discharge diameter (mm)

QW, WQ submersible sewage pump

P-stainless steel

B-Explosion proof type

15- Flow rate (m3/h)

30 Head (m)