Melt-blow filtering core and preparation process thereof

Abstract

The invention discloses a melt-blow filtering core. The melt-blow filtering core is successively provided with an outer layer PP cotton, a middle PP carbon cloth layer and an inner layer PP cotton from the exterior to the interior, wherein the outer layer PP cotton is formed through spraying silks; the PP carbon cloth layer is a middle layer arranged between an outer layer and an inner layer, and active carbon fine grains are scattered on the PP cotton through enwinding; and the inner layer PP cotton is formed by the spraying silks through winding. The melt-blow filtering core provided by the invention has the advantages that the arrangement of the inner layer PP cotton can prevent the active carbon fine grains from flowing out along the water; after the filtering core is changed and a faucet is opened, the clean water is directly flowed out, a water return valve is not needed to match, the structural complication of a filter is reduced, meanwhile, the output of black water is reduced, the operation is simple and convenient, and the environmental pollution and energy source waste are avoided; the middle PP carbon cloth layer adopts the PP cloth to closely pack the active carbon fine grains, a gluewater compound principle in the prior art is abandoned, the novel active carbon filtering core is exploited, the active carbon grains are fully contacted with the water, and the contacting ratio can achieve more than 90%; and the utilization ratio of active carbon is greatly strengthened, the filtering effect is improved, and the service life of the active carbon filtering core is prolonged.

Description

technical field [0001] The invention relates to a filter core for water filtration. Background technique [0002] There are two types of filter elements for water filtration on the market today. One is the PP cotton filter element, which can only filter particles. The other is an activated carbon filter element, which is produced by adding PE glue to the activated carbon, and making a cylindrical carbon rod by injection and extrusion. The disadvantages of this activated carbon filter element are: [0003] 1. Since glue is used in the production process, carbon particles are compounded with glue, and the contact surface is covered by glue, which cannot fully contact with water, which reduces the function of carbon to absorb odor; [0004] 2. Now when the activated carbon filter is in use, the tiny particles of activated carbon will come out together with the water, so the filter using this filter needs to be installed with a return valve. After installing the activated car...

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Problems solved by technology

[0004] 2. Now when the activated carbon filter element is in use, the tiny particles of activated carbon will come out together with the water, so the filter using this filter element needs to be installed with a return valve. After installing the activated carbon filter element, the black water must be drained before use. This not only greatly loses the active function of carbon, but also causes a great waste of energy and increases the cost of water filtration.

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