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How to Clean Dust Collector Filters

In industrial, household and commercial applications, dust collector filters are devices used to remove dust, bacteria, smoke and other debris from the air. They are a key component in maintaining clean air and a healthy environment. However, over time, these filters can accumulate dust and dirt, reducing their efficiency and, in severe cases, posing a threat to human health. Therefore, regular cleaning is very necessary for dust collector filters that have been used for a long time. In this article, we’ll explore how to properly clean dust collector filters to ensure their long-term reliability and performance.

Know your dust collector filters

Before cleaning, we must first understand the types of our dust collector filters. The following is the classification of dust collector filters by filter material:

Paper filter cartridge

Specifications: The overall size is 324*660mm, and the filtering area can reach 21㎡.

Why it’s important: Paper filter cartridges are made from natural wood pulp fibers and have a large filtration surface. Although it is less strong and not resistant to water, its high filtration area makes it a high-efficiency filter choice in air filtration or dust applications with low moisture content. Therefore, it is suitable for environments that require large-area filtration, such as dry dust situations.

Polyester filter cartridge

Specifications: Various dimensions are available.

Why it matters: Polyester filter cartridges are made of polyester non-woven bonded filter material with a tight microporous structure. This type of filter cartridge can be washed with water, has a maximum operating temperature of 135°C, and has a small pressure difference while always maintaining high-efficiency filtration. Suitable for environments requiring high-efficiency filtration and easy cleaning, and can be used under high temperature conditions.

Coated filter cartridge

Specifications:The coated dust filter cartridge uses expanded microporous polytetrafluoroethylene film, which can be applied to the surface of various filter materials.

Importance: The membrane of the coated filter cartridge covers the surface of the filter material, providing a low friction coefficient, strong hydrophobicity and excellent dust cleaning effect. This makes it suitable for use in working conditions with high wind speed, high humidity and high dust removal requirements. This filter provides excellent dust collection performance in harsh conditions.

Pleated long filter cartridge

Specifications: Available in a variety of dimensions and length options, suitable for different applications.

Why it’s important: Pleated long cartridge filters have a similar appearance to filter bags and are available in a variety of diameter and length options. They can be customized for different application needs and are often used in special applications. Different installation methods and top and bottom cover materials also increase its applicability. This filter type offers flexibility in meeting specific filtration needs. 

Cleaning method of dust collector filters

Atmospheric backflush cleaning type

If the cleaning time of Dust collector filters is too short, the dust on the filter element will start working before it is completely cleared, which will cause the resistance to recover quickly and gradually increase. On the contrary, if the dust cleaning time is too long, the filtration speed will increase due to excessive dust cleaning, and the dust can penetrate into the filter cloth, causing blockage and damage to the filter element. Often used in paper filter cartridges, polyester filter cartridges, membrane filter cartridges and pleated long filter cartridges. This is a common dust cleaning method that is generally applicable to various filter element types.

Pulse cleaning type

If the dust removal and cleaning time is too short, excessive and frequent cleaning can cause dust to penetrate the filter cloth, leading to blockage and damage of the filter element.On the contrary, if the dust cleaning time is too long, excessive dust accumulation on the filter element will cause the equipment to operate at high resistance. Often used in paper filter cartridges, polyester filter cartridges, membrane filter cartridges and pleated long filter cartridges. Pulse cleaning is an efficient method for cleaning various types of filter elements.

Vibration cleaning method

The vibration cleaning method is basically the same as the atmospheric backflush cleaning method, and failure of the driving part is also one of the reasons. Suitable for paper filter cartridges, polyester filter cartridges, membrane filter cartridges and pleated long filter cartridges. Vibration cleaning removes attached dust by vibrating the filter element, and can be applied to a variety of filter elements.

Gas cleaning

Gas cleaning uses high-pressure gas or external atmosphere to blow back the inside of dust collector filters to remove dust accumulation on the filter element. It includes pulse injection cleaning, reverse air cleaning and reverse suction air cleaning. Often used in paper filter cartridges, polyester filter cartridges, membrane filter cartridges and pleated long filter cartridges. Gas cleaning uses jet gas flow to clean the surface of the filter element, and is also suitable for different types of filter elements.

Manual beating

Manual tapping is to manually tap each dust collector filter to remove dust accumulation on the dust collector filters. Often suitable for pleated long filter cartridges. Due to the special structure of the pleated long filter cartridge, you can manually tap the filter cartridge to remove dust.

Mechanical vibration cleaning

Partial top vibration cleaning and middle vibration cleaning use a mechanical vibration device to periodically vibrate each row of dust collector filters in turn to remove dust accumulation on the dust collector filters. Often suitable for pleated long filter cartridges. Similar to manual beating, people also often use mechanical vibration to clean long pleated filters.

How to clean dust collector filters

First of all, according to the type of dust collector filters, prepare the tools and equipment required for cleaning in advance, such as vacuum cleaners, soft brushes, cleaning fluid, etc. At the same time, ensure safe operations, such as turning off the power, exhausting, etc. Cleaning dust collector filters is a critical step in ensuring efficient operation of your equipment. The following is a detailed description of the specific steps for cleaning dust collector filters, including disassembly, brushing and vacuuming, as well as related precautions:

Step 1: Remove the filter element

First, remove power and make sure the device has cooled down. Then, carefully extract the filter element requiring cleaning in accordance with the equipment’s operating manual or instructions.Make sure not to damage the filter element or other equipment parts during disassembly. If necessary, label each filter element for easy identification and documentation.

Step 2: Preliminary Cleaning

Perform preliminary cleaning after disassembling the filter element.Use a soft brush to gently clean the outside of the filter element to remove visible dust and dirt. This step will help make subsequent cleaning less difficult.

Step 3: Soak and Clean

For deep cleaning of the filter, prepare a large container filled with a mixture of warm water and cleaning fluid. Immerse the filter element completely in the cleaning solution. Let the filter soak to help soften and remove deep-seated dirt. The soaking time is usually 15 minutes to 30 minutes,you can determine the specific time based on the degree of dirt. After soaking, use a soft brush to gently brush the exterior and interior surfaces of the filter element. Things to note include:

1. Avoid using sharp or hard objects to prevent scratching or damaging the filter element.

2. Do not use excessive force to avoid damaging the fiber structure of the filter element.

3. Be careful when cleaning to prevent the filter element from deforming or cracking.

Step 4: Vacuum

Carefully vacuum the exterior and interior surfaces of the filter element to remove loose dust and cleaning fluid. Make sure the vacuum cleaner has enough suction to effectively pick up dirt. When using a vacuum cleaner, make sure not to damage the filter element.

Notes

Avoid using high-pressure water guns or powerful water pressure cleaning as this may damage the filter element.

Do not use chemical solvents to clean the filter element unless recommended by the manufacturer.

If the filter element is damaged, worn or cannot be cleaned, replace it in time to ensure the normal operation of the equipment.

After cleaning the filter element, ensure it dries completely to prevent trapping moisture inside the filter element.. Then, carefully install the filter element back into the unit, following the instructions in the unit’s operating manual. Making sure it is installed correctly to prevent air leakage.

Conclusion

In short, when using dust collector filters, it is crucial to clean dust collector filters, and choose the appropriate cleaning method according to the usage. Here, we strongly recommend you to use our Btlas dust collector filters to ensure efficient filtration, maintain a clean environment, and improve equipment performance.

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