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Purification of the principle of the primary filter These two points are very important

Purification of the principle of the primary filter These two points are very important Purification of the principle of the primary filter: interception: that is, through the sieve, larger than the sieve hole particles intercepted down to be filtered out, smaller than the sieve hole leakage past, generally have a role in large particles, the efficiency is very low, is a coarse filter filtration mechanism. Inertia collision: particles like larger particles flow with the airflow, for irregular movement. Due to the inertia of the particles or some kind of field force deviates from the direction of the airflow, not with the airflow movement, but with the obstacles collision, sticking, and being filtered out. The larger the particle, the greater the inertia, and the higher the efficiency. Generally, it is the filtration mechanism of coarse and medium efficiency filters. Brownian diffusion: tiny particles in the airflow do irregular Brownian motion, collide with obstacles to be hooked to stay stuck, and be filtered out. The smaller the particles, the stronger the Brownian motion, the more opportunities for collision with obstacles, and the higher the efficiency which is also known as the diffusion mechanism. This is a sub-high efficiency, high efficiency, and ultra-high efficiency filter filtration mechanism. The closer the fiber diameter is to the particle diameter, the better the efficiency.