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What are the post-treatment processes of functional dust bag?

浏览 Author Admin Browse Published 19/01/09

What are the post-treatment processes of functional dust bag?

In the process of dust removal, when the dust-containing gas particles pass through the dust collector, the dust particles will be captured on the outer surface of the filter bag, and the clean gas will enter the filter bag through the filter material. The dust removal cage inside the dust collector bag is used to support the filter bag and prevent the filter bag from collapsing. At the same time, it also helps the dust cake and redistribution. For some special working conditions, it is important to post-process the dust bag. The general conventions are divided into the following:

1.Burning treatment

This treatment mainly uses a fire mouth to face the surface of the fast-moving fabric to burn the fluff, and then uses a high-temperature roller to iron the surface of the fabric to make the surface of the fabric smooth and easy to clean. This not only improves the dust removal performance of the filter material, but also meets the collection of fine dust.

2.Antistatic treatment

Some dusts will easily burn when they encounter sparks at a specified concentration. Therefore, for inflammable or explosive dust, anti-static needle felt filter material should be used. Antistatic filter media refers to the conductive fiber or the base fabric woven with conductive yarn in the fiber of the filter material, so that the entire filter material has conductive properties, during the use of static electricity through the filter material to dust removal Cabinet and the ground to prevent explosions caused by static sparks.

3.Waterproof and oilproof treatment

We use fluorocarbon resin and PTFE impregnation treatment for needle felt felt material. The surface of the filter bag is hydrophobic, and water droplets can roll on the cloth surface to form a lotus leaf. Reduce the phenomenon of paste bags and corroded bags due to dew condensation when the temperature difference is relatively large.

4.Easy cleaning

Generally, the surface is treated with a mirror, or the surface layer is needle-punched on the surface of the cloth with a fine-denier fiber.

5.PTFE coating treatment

If the particle diameter of the dust is less than 1 micron, or the dust has a large adhesion, or the humidity containing the gas is large, the ordinary filter material cannot effectively filter. The polytetrafluoroethylene-coated membrane filter material not only has the filtering accuracy, but also has a smooth surface, does not adhere to dust, and is easy to remove dust. At the same time, the dust does not penetrate into the filter material.

6. Heat setting treatment

In addition to the post-processing of the dust bag, we also need to heat set the dust bag. The purpose of heat setting is to eliminate the residual stress during the processing of the filter bag, so that the size of the filter bag is stable and the surface is flat. If the size of the dust collector filter bag is unstable, the filter bag is easily deformed during use, which will increase the friction between the filter bag and the keel, and the keel in the filter bag will be difficult to pull out. Dust buildup occurs.

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