Filtering type non-woven fabric with special-shaped section

Abstract

The invention discloses a filtering type non-woven fabric with a special-shaped section. The filtering type non-woven fabric comprises a surface layer, a middle layer and a base layer which are spliced in sequence, wherein a plurality of drainage holes are formed in the surface layer and are of funnel-shaped structures; the input ends of the drainage holes are used for communicating with a fluid to be filtered, and the output ends of the drainage holes abut against the middle layer; a plurality of intercepting holes are formed in the middle layer, every two or more intercepting holes correspondingly communicate with one drainage hole, and the output ends of the drainage holes abut against the edges of the intercepting holes; and a plurality of discharge orifices are formed in the base layer, one end of each discharge orifice communicates with the plurality of intercepting holes, and the discharge orifices are used for discharging clean fluid. According to the filtering type non-woven fabric with the special-shaped section, the drainage holes are formed in the surface layer, so negative pressure is formed in the drainage holes when the fluid flows through the drainage holes, and the speed of the fluid to be filtered passing through the non-woven fabric is increased; and under the condition, the filtering effect of the non-woven fabric can be greatly improved only by applying small driving force to the fluid, and filtering cost is reduced.

Description

technical field [0001] The invention relates to the technical field of non-woven fabrics, in particular to a special-shaped cross-section filtering non-woven fabric. Background technique [0002] Non-woven fabric is a web structure formed by oriented or randomly distributed fibers. It has a large number of tiny pores inside, so it is often used for air or liquid filtration to remove impurities in air or liquid and achieve air or liquid purification. [0003] However, when traditional non-woven fabrics filter air or liquid, they often rely on the free movement of air molecules or liquid molecules to drive impurities to the non-woven fabric, and smaller air molecules or liquid molecules pass through the micropores of the non-woven fabric smoothly. , the impurities with larger particle size are trapped on the surface of the non-woven fabric. During this filtration process, the rate of air molecules or liquid molecules passing through the micropores of the non-woven fabric is re...

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a special-shaped cross-section filtering non-woven fabric for the technical problems of poor filtering effect and high filtering cost.

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