1. Overview of sales of explosion-proof submersible pumps in Australia
WQB, QWB, BQW, BWQ explosion-proof non-clogging submersible sewage pumps are the latest explosion-proof equipment designed and produced according to national standards on the basis of international advanced explosion-proof submersible sewage pump technology. This series of water pumps is a submersible sewage pump composed of a flameproof motor and a coaxial lower pump, and the protection level of the shell is IP68. It is suitable for safe discharge and other explosion-proof places in coal mine, chemical industry, petroleum and other industries with methane or coal dust explosive gas mixture. It completely solves the problems that ordinary submersible sewage pumps do not have special explosion-proof devices, thick slurry pumps cannot pump large particles, and sewage pumps are easy to block.
Structural features of explosion-proof submersible pumps sold in Australia:
The explosion-proof motor is located on the upper part of the electric pump, and the insulation grade of the explosion-proof motor is Class F. The shaft seal is composed of a rotary seal ring and a double-end mechanical seal. The rotary seal ring can prevent the intrusion of mud and reduce the pump pressure directly on the mechanical seal, which plays the role of the first sealing line of defense. There are two sets of seals. The first set is the initial seal on the pump side to seal the sewage, and the second set is the secondary seal on the motor side, which is used to seal the leakage of the lubricating oil. The full set of mechanical seals is immersed in No. 20 turbine oil. to seal cooling and lubrication.
Second, explosion-proof points:
1. If the explosive mixture inside the electric pump explodes, the flameproof shell will not be damaged, and the internal explosion cannot pass through the flameproof joint surface, causing the explosion of the external explosive mixture.
2. The parts that make up the flameproof enclosure are subjected to the hydraulic test one by one according to the provisions of items 1, 2 and 3 of GB3836 to ensure that they can withstand the maximum internal explosion pressure.
3. The flameproof joint surface, length gap and roughness of each component conform to the provisions of GB3836.2.
4. The bolts connecting the flameproof casing are equipped with anti-loosening spring washers. The head of the bolt is set in the protection ring to prevent it from falling off by itself.
5. The machine base, upper cover, shaft, front axle cover, junction box cover, terminal block, terminal screw and terminal sleeve are all explosion-proof parts. Comes with a 10m explosion-proof cable.
3. Conditions of use:
1. The altitude does not exceed 1000 meters;
2, the water temperature does 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 do not exceed the conditions specified;
7. Various types of sewage water containing a specified volume of soft substances and higher viscosity;
8. The working method is a continuous quota based on the continuous duty system (SI).
Post time: 2022-01-18
