What is the structure and working principle of the dust removal filter bag?

What is the structure and working principle of the dust removal filter bag?
Dust removal filter bag is a kind of dust removal equipment commonly used in industrial production process. It can effectively remove particles and dust in the air by using cloth bag filtration, and ensure the cleanliness and safety of the production environment. What is the structure and working principle of the dust removal filter bag? This will be described in detail below.
1、 Structure of dust removal filter bag
The dust removal filter bag is mainly composed of filter material and filter bag skeleton.
1. filter material: the filter material is the core part of the dust removal filter bag, which is responsible for filtering particles and dust in the air. Common filter materials include chemical fiber filter cloth, glass fiber filter cloth, special filter cloth, etc. Different types of filter media are selected according to the particle size and properties to achieve good filtration effect.
2. filter bag framework: the filter bag framework is a structure supporting the filter material, which is usually made of metal materials such as steel wire, stainless steel, etc. The shape of the filter bag skeleton can be cylindrical, trapezoidal, square, etc., and the appropriate shape and size shall be selected according to the actual needs.
The dust removal filter bag is usually in the form of bag filter, that is, the filter material is made into a tube and placed in the filter bag skeleton. Multiple filter bags can form a filter bag chamber or filter bag array to form a complete dust removal system.

2、 Working principle of dust removal filter bag
The working principle of the dust removal filter bag is to intercept the particles and dust in the air on the filter material through the filtering effect of the filter material, so that the clean air can pass through.
1. mechanical resistance: when particles and dust enter the filter bag chamber of the dust remover, due to inertia, they cannot directly pass through the fine pores of the filter material, but will hit the surface of the filter material. These ejected particles and dust are called mechanical resistance.
2. surface filtration: when particles and dust hit the surface of the filter material, they will stay on the filter material and form a thick layer of particles. This layer of particles will block the passage of subsequent particles, forming a surface filtration effect.
3. particle filtration: with the continuous thickening of the particle layer, particles and dust will be blocked on the surface of the filter material, forming particle filtration effect. The thicker the particle layer, the better the filtration effect. However, too thick particle layer will also increase the air resistance and affect the working efficiency of the dust collector.
4. ash removal and regeneration: with the passage of time, the thickness of the particulate layer will continue to increase, resulting in the increase of air resistance, which will affect the working effect of the dust collector. Therefore, it is necessary to clean the filter bag to remove particles and dust from the surface of the filter material. Common ash cleaning methods include mechanical vibration ash cleaning, back blowing ash cleaning, pulse injection ash cleaning, etc. The dust removal operation will reduce the particle layer, and the particle layer will gradually thicken when the dust collector continues to work.
Through the above working principle, the dust removal filter bag can effectively intercept particles and dust in the air, purify the air, and ensure the cleanliness and safety of the production environment.
To sum up, the structure of the dust removal filter bag includes the filter material and the filter bag skeleton. Through the filtering effect of the filter material, the particles and dust in the air are intercepted on the filter material, and then the particles and dust are removed through the ash removal operation to achieve air purification. Dust removal filter bag plays an important role in the process of industrial production, effectively protecting the environment and the health and safety of employees.