Hazards and Selection of Dust Explosion Proof Motors

2023-11-22 00:57:22

Dust explosion-proof motor explosion-proof environment involves coal powder, aluminum powder, magnesium powder, zinc powder, titanium powder

The explosion-proof environment of dust explosion-proof motors involves coal powder, aluminum powder, magnesium powder, zinc powder, titanium powder, zirconium powder, flour, starch, sugar powder, milk powder, blood powder, fish bone powder, textile fiber powder, wood powder, paper powder, rubber and plastic powder, tobacco, etc. Enterprises belong to the dust explosion-proof range. Dust explosion-proof motors are divided into two types: one is explosive dust; Another type is combustible dust. In dust environments, the reliability requirements for using explosion-proof motor equipment are also increasing. Let's talk about the hazards of dust and the selection of dust explosion-proof motors in Nanyang.

The main hazards of dust:

1. Extremely destructive. Dust explosions involve a wide range of sectors, including coal, chemical, pharmaceutical processing, wood processing, grain and feed processing, and so on.

2. It is prone to secondary explosions. The explosion wave blows up the dust deposited on the equipment or ground, and in a short period of time after the explosion, a negative pressure will be formed in the central area of the explosion. The surrounding fresh air will be filled in from the outside to the inside, forming the so-called "return wind", which mixes with the raised dust and causes a second explosion when ignited by the afterfire of the explosion. During the second explosion, the dust concentration is generally much higher than during the first explosion, so the power of the second explosion is much greater. For example, in a sulfur powder plant, an explosion occurred inside the grinder.

The explosion wave diffused from the grinder to the cyclone separator along the gas pipeline, and a secondary explosion occurred in the cyclone separator. The explosion wave propagated into the workshop through the cracks generated on the cyclone separator after the explosion, raising the sulfur dust settling on the buildings and process equipment, and causing an explosion.

3. Can produce toxic gases. One is carbon monoxide; Another type is the toxic gas that (such as plastic) decomposes itself. The generation of toxic gases often leads to a large number of people and livestock poisoning casualties after explosions, and full attention should be paid to it. The dust explosion-proof motor of Nanyang explosion-proof motor is designed and manufactured according to the specified conditions, which can prevent dust from entering the motor casing or although it cannot completely prevent dust from entering, it does not hinder the safe operation of the motor, and the accumulation of internal dust is not easy to cause ignition danger, and it will not cause the explosion of surrounding explosive dust mixture during use.

Dust explosion-proof motor selection:

In order to operate normally in the above-mentioned areas, the casing of dust explosion-proof motors can also be divided into two categories based on their ability to limit dust:

Dust tight shell, with a protection level of IP6X and a mark of DT;

Dustproof enclosure, with IP5X protection level and DP marking.

When selecting dust explosion-proof motors, the appropriate type of dust explosion-proof motor can generally be selected based on two aspects.

1. First, select the protection type based on the corresponding motor in different hazardous locations

2. Choose based on the nature, category, and temperature group of the dust

Dust poses a huge threat, so it is very important to choose a dust explosion-proof motor correctly and understand the usage requirements. This sharing is accepted here. If you want to learn more, please contact us for advice on Nanyang explosion-proof motors.