Purification principle of air filter

The filter layer of the high-efficiency air filter has five main functions for particle capture:

1, Interception effect: When particles of a certain size move close to the fiber surface, the distance from the center line to the fiber surface is smaller than the particle radius, dust particles will be intercepted and deposited by the filter fiber.

2, Inertial effect: When the particle mass is large or the speed is high, it will collide with the fiber surface due to inertia and deposit.

3, Diffusion effect: Small particles have strong Brownian motion and easily collide with the fiber surface.

4, Gravity effect: When particles pass through the fiber layer, they are deposited on the fiber due to gravity settlement.

5, Electrostatic effect: Both fibers and particles can be charged, producing an electrostatic effect that attracts particles to the fiber surface.

As more and more dust is collected, the filtration efficiency of the filter layer decreases and the resistance increases; when the resistance reaches a certain value or the efficiency drops to a certain value, the filter needs to be replaced in time to ensure purification cleanliness.

The application scope of high-efficiency filters is mainly terminal filtration in medical, civil or industrial clean places with high cleanliness requirements in electronics, semiconductors, precision machinery, pharmaceuticals, hospitals, food and other industries. Since high-efficiency filters are generally used as filter ends, the requirements for high-efficiency filters are alsoVerystrict, of course additional “take care of”.

The article comes from Shanghai Weigu Chemical Products Co., Ltd. Shanghai Weigu is a domestic manufacturer of high-efficiency filter potting glue. It focuses on quality and service and looks forward to cooperating with you.