2023-09-12
When working, the dust bag mainly removes particulate matter in the air through three filtration mechanisms: inertial collision, interception and blocking, and diffusion deposition. Below we will look at these three mechanisms in detail.
1. Inertial collision
Inertial collision is one of the most basic filtration mechanisms of dust bag. When particles in the air flow move, some particles fly freely between the entrance and exit by virtue of their own mass and speed, which are called inertial particles. Because inertial particles have high mass and speed, when they meet the dust bag, they often directly hit the bag surface due to inertia.
2. Intercept and block
For some particles with small mass, light mass and small diameter, they will weaken or disappear when intercepted by inertial collision. At this time, the interception and blocking mechanism of the dust bag will come into play. Through the multi-directional interlacing and electrochemical action of its internal fibers, the dust bag can capture part of the small particles that volatilize into gas and form a deposition layer on the fibers, thereby reducing dust pollution in the air.
3. Diffusion deposition
As the filtration time increases, when the particles contact the surface of the dust bag, the diffusion deposition process begins. Diffusion deposition refers to some small particles that are extremely easy to be captured. They are constantly deflected in the airflow during the long operation process. The continuous flow collides and entangles with the dust bag, and is finally deposited on the surface of the bag.
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