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How to improve the service life of air dust filter bags

Author: Site Editor     Publish Time: 2022-03-03      Origin: Site


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Well-designed structure

The structure of the filter bag should meet the requirements of filtration and dust removal of the matching bag filter, and it should be easy to install and reliable in sealing. The corresponding filtering area and good filtering state should be pursued. Reasonable coordination with related components. For example, the outer filter type synthetic fiber filter bag and the frame should be loosely matched, the outer filter type glass fiber filter bag should be closely matched with the small-spaced vertical rib frame; the inner filter type filter bag should consider and set the filter bag expansion force.

Exquisite sewing technology

①The technology is advanced, the sewing size meets the design requirements, and the heat shrinkable size is reserved according to the type of filter material and the temperature of use.

②The equipment is complete, the stitching distance is reasonable, there is no skipped stitch and broken thread, and the stitching meets the requirements.

③The accessories are of high quality, with reasonable coordination, and there is no burr or breakage to damage the filter bag.

④The whole filter bag has no defects such as small holes, skipping yarns, contamination, etc., and has proper packaging, so that it will not be damaged or damp during storage and transportation. The glass fiber filter bag should not be under heavy pressure and the storage period is too long, otherwise the service life will be affected.

External filter bag installation method

①The bag mouth and the porous plate are reliably sealed and fixed.

②The filter bag is suspended vertically under the porous plate.

③ Adjacent filter bags do not collide with each other.

④ The filter bag and the frame are properly matched, and the frame is straight and free of burrs.

Inner filter bag installation

①The upper end of the filter bag is equipped with a bag cap and is hung on the beam of the dust collector through the hanging device, and the lower end and the lower bag are reliably sealed and fixed.

②The tension of the filter bag installation should be adjusted to the specified value, so that the filter bag will not loosen and fall off during filtration and backflushing, and should be adjusted again after 1 week and 2 months of use.

③ The fittings (anti-slump ring) in the filter bag are properly matched, and all fittings should not have burrs or breakage.

Reliable and effective cleaning

During the use of the filter bag, the dust on the dust-receiving area gradually increases and the pressure difference rises. The dust should be isolated through effective dust removal to keep the pressure difference inside and outside the filter bag within the set range.

Prevent unexpected exceptions

When the bag filter is in operation, it should prevent sudden abnormal situations, such as sudden increase in gas temperature, or entry of corrosive gas, or sudden reduction of gas temperature below the dew point, etc., which are affected by temperature, humidity, chemical corrosion, mechanical wear and tear. or impact and other factors exceed the resistance of the filter bag and damage it.

Equipment maintenance

If the filter bag is damaged, it should be found and replaced in time, and the pressure difference change of the bag filter should be observed frequently. If there is a fault in cleaning, it should be eliminated in time, whether the cleaning system is working properly, and if the process conditions of the dust removal system change, the cleaning should be adjusted in time. The cycle or bag filter working system.

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