Is there a relationship between air filter media area and service life? What should I pay attention to when replacing bag filters?

Air FilterIs there a relationship between filter media area and service life? What should I pay attention to when replacing bag filters?

Air FilterIt refers to the air filtration device, which is generally used in clean workshop, clean plant, laboratory and clean room, or used for dust prevention of electronic machinery communication equipment and so on. Air filter diffusion and inertia effect is not obvious in that part of the dust is difficult to filter, for the filter performance, the efficiency of the filter efficiency of the low point of the efficiency value ** representative. If the filter material with static electricity or dust with static electricity, filtration effect can be significantly improved, there are two main reasons: electrostatic electricity so that the dust to change the trajectory of the movement and hit the obstacle; electrostatic force so that the dust in the media to stick more firmly.

Bag filter resistance is captured dust on the airflow to produce additional resistance, the use of medium air filter resistance will gradually increase. Captured dust and filter media into one and form additional obstacles, so the use of medium efficiency filter filtration efficiency will also be improved, the captured dust is mostly gathered on the windward side of the filter cotton material.

The larger the area of the filter media, the more dust it can hold and the longer the life of the filter. The more dust that accumulates on the filter media, the greater the resistance. When the resistance is unreasonably high, the filter is scrapped. Sometimes excessive resistance can cause the dust that has been captured on the air filter to fly off, and when this danger occurs, the filter should also be scrapped. Filter resistance increases with the increase of air flow, by increasing the area of the filter material, you can reduce the relative wind speed through the filter material to reduce the filter resistance.

So it is concluded that the larger the filter media area, the more dust it can hold, and the longer the life of the filter.

Extended Reading:

Bag filter is a multi-purpose filtration equipment with novel structure, small volume, easy and flexible operation, energy-saving, high efficiency, airtight work and strong applicability. The applicable temperature of bag filter is between -10~80℃; the humidity should be less than or equal to 80%, slightly acidic and alkaline air filtration. In general, in the rated air volume under the conditions of use, 3 to 4 months that is, need to be replaced; when the resistance of the filter reaches 400Pa or more, it must be replaced; such as the filter is used in the filter media washable, the replacement of the filter media need to be rinsed with water or a solution containing neutral detergent, drying; the equipment of the * * * limit is cleaned for the second time, that is, it is necessary to replace the brand-new equipment.

What do bag filters need to be aware of when replacing them?

In the process of using the filter regularly check the inlet surface of the filter with or without debris blocking the situation, the surface of the filter media with or without damage, if these phenomena occur, it is necessary to replace the new filter media or replace the new equipment, re-installation. When installing, make sure that the sealing is good at the crimp with the frame to prevent air leakage; don't hit the surface of the filter with heavy objects, and don't pull the surface of the filter material with force; when installing, make the length of the mouth of the filter bag perpendicular to the ground to ensure the filtering effect of the air supply and increase the service life.

Generally when the differential pressure of the bag filter reaches 2-3 kilograms, it proves that the filter bag has been basically clogged, and at this time, the liquid flowing out of the filter's outlet is also very little, and the filter bag should be replaced. The service life of the filter bag is determined by the time of filtration, the flow rate of filtration, and the filter area of the filter bag.