Dust Collector Filter Bags

What Are Dust Collector Filter Bags?

Dust collector filter bags are a highly efficient type of dust removal filter material. They are made from polyester short fibers or long fibers as raw materials. Their service life is generally 4 to 6 times that of glass fiber fabrics. They feature good air permeability, high dust removal efficiency, easy to clean, and have certain resistance to acids, alkalis, and heat. During the weaving process, multi-directional pile is adopted, which increases the fabric thickness and makes it elastic. The dust removal effect is extremely good, with a dust removal rate of up to 99.999%.

Working Principle of High-Efficiency Dust Collector Filter Bags:

The filter bag is the core component of the operation of a bag-type dust collector. It is usually in a cylindrical shape and is vertically suspended in the dust collector. The dusty gas enters the dust collector through the inlet and is guided by the deflector plate in the dust hopper, causing some large particles of dust to be separated by the inertial force and directly fall into the dust hopper. The dusty gas then enters the filter bag filtration area of the box. The vast majority of the dust is captured on the outer surface of the filter bag, while the clean gas passes through the filter material and enters the interior of the filter bag. The purified gas then enters the upper box through the filter bag opening and is finally discharged through the outlet. The cage frame inside the filter bag is used to support the filter bag, preventing it from collapsing. At the same time, it helps to remove the dust cake and redistribute it.

Product category of dust collector filter bags:

1. According to the shape of the cross-section of the dust removal filter bags, they are classified as: flat-shaped bags (trapezoidal and flat-shaped) and circular-shaped bags (cylindrical).
2. It is classified according to the air intake and exhaust methods as follows: bottom intake and top exhaust type, top intake and bottom exhaust type, and direct flow type (applicable only to plate-shaped flat bags).
3. According to the filtering method of the dust removal filter bags, they can be classified into: external filtration type and internal filtration type.
4. According to the temperature tolerance of the dust removal filter bags, they are classified as: high-temperature type, medium-temperature type, and normal-temperature type.
5. Low-temperature type, suitable for use in bag-type dust collectors in areas with localized dust emissions such as raw material mills, cement mills, and top/bottom of storage facilities. However, when used in conditions with high moisture content, it is necessary to apply oil-repellent and waterproof treatment agents to the surface for surface treatment.
6. For constant and high-temperature types, they are suitable for bag-type dust collectors used in the tail sections of cement rotary kilns, rotary kilns, coolers, and dryers for handling high-temperature exhaust gases. However, when used under high-temperature and high-humidity conditions, it is necessary to apply oil-repellent and waterproof treatment agents to the surface for surface treatment.

Application of dust collector filter bags:

It is widely applied in: woodworking manufacturing, mechanical processing (such as welding, grinding, polishing, etc. for dust removal), spray painting workshops, metallurgical industry, casting industry, chemical industry, food processing, paper industry, etc. for dust treatment.

The diameters of the filter bags are 120mm, 130mm, 160mm, etc.,and the lengths are generally between 2000 and 6000mm.
We can also customize it according to your requirements.