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How to clean the filter material of the box air filter?
How to clean the filter material of the box air filter?Cleaning the filter material of the box air filter requires attention to the method and frequency. The following are some common cleaning methods:First, the first effect filter material cleaning method clapping For some relatively thick, to intercept large particle impurities based on the initial effect of the filter material, such as nylon mesh, metal mesh, and other materials of the filter material, you can use the way of beating cleaning. Carefully remove the filter material from the filter, then take it to an open area outside and gently pat the edges and surface of the filter material with your hand or a soft tool (such as a clean brush handle). By beating, the dust, hair, and other large particles attached to the surface of the filter material fall off. In the beating process, pay attention to moderate strength to avoid damage to the filter material. For example, this method is very practical in the first-effect filter cleaning of home air conditioners. Generally, such a simple cleaning can be carried out once a month, which can effectively remove the dust and fluff accumulated on the filter screen and maintain the initial filtration effect of the air. Suction method Using a small handheld vacuum cleaner is also a good way to clean the initial filter material. Adjust the suction head of the vacuum cleaner to the right size so that it can fit the surface of the filter, then turn on the vacuum cleaner and slowly move the suction head along the texture or structure of the filter to remove the dust. This method is relatively mild, suitable for soft texture, or easy to damage the initial effect filter material, such as polyester fiber filter material. For example, in the initial effect filter cleaning of some high-end air purifiers, the suction method can avoid the loose fiber of the filter material caused by beating, thereby extending the service life of the filter material. It is recommended to vacuum every 1-2 weeks, and the specific frequency can be adjusted according to the dust situation of the use environment. Water washing method (partially applicable) Some primary filter materials can be washed, such as glass fiber and some synthetic fiber materials. Before washing, check the instruction manual or product label of the filter material, confirm that it can be washed, put the filter material into warm water (the water temperature is generally not more than 30 ° C), add a small amount of mild neutral detergent, gently stir, and let the impurities disperse in the water. Then rinse with water and put the filter material in a well-ventilated place to dry naturally. Be careful not to use hot water or strong detergent to avoid damaging the fiber structure of the filter material. For example, in the primary filter cleaning of some industrial ventilation systems, if the filter is a washable glass fiber material, a water washing cleaning every 3-4 weeks can effectively restore the filtration performance of the filter. Second, the medium efficiency filter material cleaning method Compressed air purge method The aperture of the medium effect filter material is relatively small, the adsorption capacity of dust and other impurities is strong, and compressed air can be used for cleaning. Remove the filter material from the filter, fix it in a suitable position, and then use a clean, dry compressed air tank (the pressure is generally between 0.3-0.5MPa), and align the nozzle with the intake surface of the filter material. Purge at a certain Angle (usually at an Angle of 30° -45 ° from the surface of the filter) and a distance (about 10-15 cm). When purging, it is necessary to start from one end of the filter material and carry it out in a certain order (such as from top to bottom, from left to right), so that the dust is blown away from the filter material by compressed air. This method is widely used in box air filters in industrial and commercial environments. For example, in the air-conditioning system of the machine room, the medium efficiency filter material can be cleaned by compressed air once every 2-3 months to keep the air flowing smoothly. Immersion cleaning method (partially applicable) For some water-resistant medium effect filter materials, such as some polyester non-woven filter materials, the method of immersion cleaning can be used. Put the filter material into the solution containing an appropriate amount of special cleaning agent (according to the proportion of cleaning agent instructions) to soak for 10-15 minutes, so that the dust and dirt in the filter material are fully dissolved in the solution. Then gently rub the filter material, taking care not to use excessive force to avoid damaging the fiber of the filter material. After soaking and rubbing, rinse the filter material with clean water repeatedly until the rinse water is clear. Finally, put the filter material in a cool and ventilated place to dry. However, before soaking cleaning, be sure to confirm that the filter material can withstand this cleaning method because not all medium-efficiency filter materials are suitable for soaking cleaning. If it is hastily cleaned under uncertain circumstances, it may cause damage to the filter material. Third, high-efficiency filter material (such as HEPA filter) cleaning precautions Cleaning is generally not recommended (except in special cases) The filtration accuracy of HEPA filter material is very high, and its fiber structure is very fine. Under normal circumstances, it is not recommended to clean the HEPA filter material, because the conventional cleaning method makes it difficult to completely remove the dust and pollutants inside the filter material, and it is easy to damage the fiber structure of the filter material during the cleaning process, thereby reducing the filtration efficiency of the filter material. Professional cleaning (in special cases) If you must clean the HEPA filter material, it is best to use professional equipment and methods. For example, some professional air filtration equipment repair companies will use ultrasonic cleaning equipment to clean the HEPA filter material. Ultrasonic cleaning is through high-frequency vibration in the cleaning fluid to produce tiny bubbles, these bubbles in contact with the filter surface and internal dirt will break, producing a strong impact force, on the dirt from the filter. However, this professional cleaning method also has certain risks, and the filtration efficiency of the HEPA filter material after cleaning may be reduced, so it is still necessary to use caution. Fourth, the activated carbon filter material cleaning method insolation Activated carbon filter materials are mainly used to remove harmful gases and odors in the air through adsorption. When the activated carbon adsorbs a certain amount of pollutants, it can be taken out and exposed to the sun. The ultraviolet rays and heat in the sunlight can make some pollutant molecules in the activated carbon obtain energy and leave the surface of the activated carbon, thus restoring part of the adsorption capacity. Generally, the activated carbon filter material is exposed to the sun for 2-3 days, during which the filter material should be turned from time to time so that all parts of it can fully receive sunlight. However, the exposure method can only restore a part of the adsorption capacity of activated carbon, and it cannot be reused indefinitely. After repeated exposure to the sun, the adsorption effect of activated carbon will gradually decline, and eventually, a new filter material needs to be replaced. Vacuum desorption (Professional method) In some professional air purification equipment maintenance, the method of vacuum desorption can be used to clean activated carbon filter materials. This method is to put the activated carbon filter material into a vacuum container, by reducing the pressure inside the container, so that the gas molecules adsorbed on the surface of the activated carbon are more easily detached. At the same time, combined with appropriate temperature control (generally carried out at a certain low temperature to avoid damage to the activated carbon structure), the adsorption performance of activated carbon can be more effectively restored. However, this method requires professional equipment and technology, and it is difficult for ordinary users to operate on their own. |
