Filter paper is frequently seen in various industries. Different fiber filter papers have different performance and usages, such as there are normal ones for general occasions, glass fiber filter papers for high temperature, and polypropylene filter papers for ultra-clean, etc. It provides an effective means for removing as many contaminating particles as possible from liquids and air and has a small resistance limit.
Principle
In the actual design of the filter paper, every effort must be made to balance the various indicators to effectively protect the system to be filtered. Then the filtration principle of filter paper is reflected in the following aspects:
In the actual design of the filter paper, every effort must be made to balance the various indicators to effectively protect the system to be filtered. Then the filtration principle of filter paper is reflected in the following aspects:
1. Filtering agglomerates—-as the dirt particles accumulate on the surface of the filter paper, it forms a filter layer itself, thereby capturing smaller particles in the pores between the large particles. as the particles continue to Increase, the resistance is also continuously increased until the end is completely blocked or reaches the pressure difference.
2. Adsorption—–When the filtered fluid passes through the labyrinth, although some of the particles are much smaller in diameter than the pore size, these small particles are adsorbed onto the filter paper by the electrostatic attraction. Therefore, static electricity is specially added to some filter materials during the manufacturing process.
3. Fall-into—-In this process, due to the flow rate, the particles directly fall into the surface of the filter paper fiber rather than staying in the pores of the filter paper and are held by the adsorption force and the fluid force of the fluid, thereby blocking some smaller particles.
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