Explosion-proof Submersible Sewage Pump

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overview

Explosion proof submersible sewage pump is an explosion-proof equipment produced on the basis of explosion-proof submersible sewage pump technology. The pump consists of an explosion-proof electric motor and a coaxial lower pump to form a submersible sewage pump. It is suitable for safe emissions and other explosion-proof locations in industries such as coal mines, chemicals, and petroleum that contain explosive gas mixtures of methane or coal dust. Solved the danger of ordinary submersible sewage pumps without special explosion-proof devices, the inability of concentrated slurry pumps to suck large particles, and the problem of sewage pumps being prone to blockage.

Structural features:

The explosion-proof motor is located on the upper part of the electric pump, and the insulation level of the explosion-proof motor is F level. The shaft seal is composed of a rotary sealing ring and a double end mechanical seal. The rotary sealing ring can prevent mud intrusion and reduce pump pressure, which is directly applied to the mechanical seal, playing a sealing defense role. The double end mechanical seal consists of two groups, with the initial seal on the pump side used to seal sewage, and the second group on the motor side used to seal the leakage of lubricating oil, The complete set of mechanical seals is immersed in No. 20 turbine oil to provide cooling and lubrication for the seal.

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 pass through the explosion-proof joint surface, causing the external explosive mixture to explode.

2. The components that make up the explosion-proof shell shall undergo water pressure testing one by one in accordance with the provisions of GB38361, 2, and 3 to ensure that they can withstand large internal explosive pressures.

3. The explosion-proof joint surface, length gap, 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 placed inside the protective ring to prevent self detachment.

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