Filter core and manufacturing method thereof

Abstract

The invention discloses a filter core. The filter core is barrel-shaped and sequentially comprises an inner fine-filtering fiber layer, an adsorptive fiber layer, a middle fine-filtering fiber layer, a skeleton fiber layer and an outer coarse-filtering fiber layer from inside to outside in the radial direction, wherein the filtering pore diameters of the inner fine-filtering fiber layer, the middle fine-filtering fiber layer and the outer coarse-filtering fiber layer are gradually increased from inside to outside in the radial direction. The filter core of the invention has the advantages of wide application range, high filtering precision, large pollutant carrying capacity, high stiffness and long service cycle, thereby being a non-metal low-carbon filter core which can be reclaimed for cyclic utilization. The invention also discloses a manufacturing method of the filter core.

Description

Technical field: [0001] The invention relates to a filter element and a manufacturing method thereof, in particular to a filter element of a vehicle filter and a manufacturing method thereof. Background technique [0002] Traditional automotive filters, such as air filters, fuel filters and oil filters, mainly include sawdust filter elements, fiber non-woven filter elements, single melt-blown fiber filter elements, metal filter elements and paper filter elements. [0003] However, the sawdust filter element has low air permeability and high resistance. When the pressure is high, it is easy to damage and block the channel. The process is simple and cumbersome, so it is not suitable for industrial production. The fiber non-woven filter element needs to be supported by metal mesh due to its soft material, weight, and the process is cumbersome and does not meet the requirements for the development of non-metallized filter elements. The metal mesh filter element has poor filtrat...

AI Technical Summary

Problems solved by technology

[0003]However, the sawdust filter element has low air permeability and high resistance. When the pressure is high, it is easy to damage and block the channel. The process is simple and cumbersome, so it is not suitable for industrial production

The fiber non-woven filter element needs to be supported by metal mesh due to the soft material, and the weight is heavy, and the process is cumbersome and does not meet the requirements for the development of non-metallized filter elements.

Metal mesh filter element has poor filtration accuracy, heavy weight and high cost

The single meltblown fiber filter element is easily collapsed and deformed under the action of high temperature and high pressure due to the single radial winding of single component fiber after melting, which affects the filtering effect

The widely used paper filter element has a single pore size, low filtration accuracy, and small dirt holding capacity. It is easy to produce filter cake effect under the action of temperature and pressure, resulting in short service life and other problems.

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