CN218553421U - High-efficiency low-resistance composite filtering material - Google Patents
High-efficiency low-resistance composite filtering material Download PDFInfo
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- CN218553421U CN218553421U CN202223201332.5U CN202223201332U CN218553421U CN 218553421 U CN218553421 U CN 218553421U CN 202223201332 U CN202223201332 U CN 202223201332U CN 218553421 U CN218553421 U CN 218553421U
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Abstract
The utility model discloses a high-efficiency low-resistance composite filtering material, which is provided with a protective layer, a first high-efficiency low-resistance layer, an electrostatic adsorption layer, a dust holding layer and a second high-efficiency low-resistance layer from outside to inside in sequence, wherein the second high-efficiency low-resistance layer comprises a plurality of continuous and uniformly arranged filtering holes, the filtering holes are formed by enclosing composite fibers, the cross sections of the filtering holes are regular hexagons, and the sizes of the filtering holes in the second high-efficiency low-resistance layer are consistent; the protective layer is melt-blown cloth. The second high-efficiency low-resistance layer is arranged in a honeycomb shape, and the diameter of the composite fiber is 300-1000nm. The first high-efficiency low-resistance layer and the second high-efficiency low-resistance layer have excellent temperature and humidity stability, the stability of the mechanical interception and filtration performance of the composite filter material is guaranteed to a certain extent, and the filter holes of the second high-efficiency low-resistance layer are arranged in a mode of being consistent in size and closely arranged, so that the mechanical interception and filtration performance of the composite fiber is greatly improved under the lower gram weight.
Description
Technical Field
The utility model relates to a filter technology field especially relates to a high-efficient low resistance composite filter material.
Background
The filtering material can efficiently intercept particulate matters in the air, and the particulate matters can be used in virus propagation, haze weather and the likeWith increasing emphasis, at present, the filter materials are mostly made by melt-blown non-woven technology, the fiber diameter of melt-blown filter materials is usually in the micron level, the pore size is 10-15 μm, and is larger than the diameter of PM, therefore, the mechanical interception filtration efficiency of common melt-blown filter materials is only 50%, and the quality factor is 0.014Pa -1 On the other hand, in order to ensure the mechanical interception filtering efficiency, the mechanical interception filtering efficiency can be improved by increasing the thickness of the material, but the filtering resistance of the melt-blown filtering material with excessive thickness is greatly increased. After the melt-blown electret material is subjected to electrostatic electret treatment, the melt-blown electret material intercepts particulate matters by utilizing an electrostatic adsorption effect, and the filtering efficiency can be greatly improved. Therefore, a high-efficiency low-resistance filter material is lacked.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high-efficient low resistance composite filter material to solve above-mentioned problem.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a high-efficiency low-resistance composite filter material is sequentially provided with a protective layer, a first high-efficiency low-resistance layer, an electrostatic adsorption layer, a dust containing layer and a second high-efficiency low-resistance layer from outside to inside, wherein the second high-efficiency low-resistance layer comprises a plurality of continuous and uniformly arranged filter holes, the filter holes are formed by enclosing composite fibers, the cross sections of the filter holes are regular hexagons, and the filter holes in the second high-efficiency low-resistance layer are consistent in size; the protective layer is melt-blown cloth.
Preferably, the second high-efficiency low-resistance layer is arranged in a honeycomb shape, and the diameter of the composite fiber is 300-1000nm.
Preferably, the diameter of the circumscribed circle of the filtering pores is 1 to 3 μm.
Preferably, the side of the protective layer close to the first high-efficiency low-resistance layer is provided with grooves arranged at intervals, a nanofiber layer is arranged in each groove, the nanofiber layer is arranged close to the protective layer, and a nucleating agent is uniformly bonded on the side, away from the protective layer, of the nanofiber layer, and is selected from Fe 3 O 4 、BaTiO 3 、SiO 2 And polytetrafluoroethylene.
Preferably, the first high-efficiency low-resistance layer comprises horizontal fibers and oblique fibers which are arranged in an inclined mode, the oblique fibers and the horizontal fibers are arranged in a crossed mode, and the dust containing layer is an electrostatic spinning nanofiber net.
Preferably, the included angle between the oblique fibers and the transverse fibers is alpha, and alpha is 30 degrees.
Preferably, the nanofiber layer comprises a plurality of uniformly arranged meshes, the meshes are arranged in a rectangular shape, and two opposite corners of the meshes are connected through connecting fibers.
The utility model discloses the beneficial effect who has does: this composite filter material has set gradually the inoxidizing coating from outside to inside, first high-efficient low resistance layer, the electrostatic adsorption layer, hold the dirt layer, the high-efficient low resistance layer of second, first high-efficient low resistance layer and the high-efficient low resistance layer of second are the fibrous layer of printing the preparation through the nanofiber, it has excellent temperature and humidity stability, the fibrous layer that has temperature and humidity stability has all been set up in this filter material's both sides, this composite filter material mechanical interception filtering property's stability has been guaranteed to a certain extent, the electrostatic adsorption layer then has the dual effect of electrostatic adsorption and mechanical interception, thereby further improved this filter material's filtering quality, the filtration pore of the high-efficient low resistance layer of second sets up to the form of the unanimous closely arranged of size, make composite fiber increase substantially its mechanical interception filtering quality under lower grammes per square metre.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of a second high-efficiency low-resistance layer according to the present invention;
fig. 3 is a schematic structural view of a first high-efficiency low-resistance layer according to the present invention;
fig. 4 is a schematic structural diagram of the nanofiber layer of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
A high-efficiency low-resistance composite filter material is shown in figures 1 and 2, and is sequentially provided with a protective layer 1, a first high-efficiency low-resistance layer 2, an electrostatic adsorption layer 3, a dust holding layer 4 and a second high-efficiency low-resistance layer 5 from outside to inside, wherein the second high-efficiency low-resistance layer 5 comprises a plurality of continuous and uniformly arranged filter holes 6, the filter holes 6 are formed by enclosing composite fibers 7, the cross sections of the filter holes 6 are regular hexagons, and the filter holes 6 in the second high-efficiency low-resistance layer 5 are the same in size; the protective layer 1 is melt-blown cloth.
The inoxidizing coating 1 in the outside is conventional melt-blown fabric for it has conventional barrier propterty, first high-efficient low resistant layer 2 and the high-efficient low resistant layer 5 of second are the fibrous layer of printing through the nanofiber and making, it has excellent temperature and humidity stability, fibrous layer that has temperature and humidity stability has all been set up in this filtering material's both sides, this composite filter material mechanical interception filtering performance's stability has been guaranteed to a certain extent, electrostatic adsorption layer 3 then has the dual effect of electrostatic adsorption and mechanical interception, thereby this filtering material's filtering performance has further been improved.
The arrangement mode of the fibers directly influences the aperture, aperture distribution and mechanical interception filtering performance of the fiber material, the filtering effect of regular fibers and disordered fibers is compared in a simulation mode in the research and development process, it is found that under the same gram weight, meshes 13 formed by the regular fibers are very uniform and are all 1.8 mu m, the diameters of the meshes 13 formed by the disordered fibers are greatly different and are influenced by the wooden barrel short plate effect, the mechanical interception efficiency of the material depends on the size, the number and the area proportion of large holes, therefore, the mechanical interception filtering efficiency of the disordered fibers is reduced to a certain extent, for this reason, the diameters of large holes must be reduced by improving the gram weight and the thickness of the material, researches find that the disordered fibers can avoid the large holes with the size of more than 1.8 mu m when being close to 4 times of the gram weight of the regular fibers, but the projection porosity is reduced from 40.9% to 5.6%, the projection porosity is only 1/14 of the regular fiber net, therefore, the mechanical interception filtering performance of the fiber material can be greatly improved by adjusting the arrangement mode of the fibers, and the mechanical interception filtering performance of the second high-efficiency interception layer is set to be lower and is greatly improved in a composite filtering mode under the size of 5.6.
In another embodiment, as shown in fig. 2, the second high efficiency low resistance layer 5 is disposed in a honeycomb shape, the diameter of the composite fiber 7 is 300-1000nm, the thinner composite fiber 7 has a significant contribution to the mechanical barrier filtration efficiency, and the composite fiber 7 may be any one or a combination of more of nylon, polylactic acid, polystyrene, polyacrylonitrile, polyvinylidene fluoride, and polyvinyl chloride.
In another embodiment, the diameter of the circumscribed circle of the filtering holes 6 is 1-3 μm, the diameter of the filtering holes 6 of the second high-efficiency low-resistance layer 5 is the same, since the filtering holes 6 are regular hexagons, the diameter of the circumscribed circle of the filtering holes 6 can be selected according to the requirement, the smaller the diameter of the circumscribed circle, the higher the mechanical interception and filtration efficiency, in this embodiment, the diameter of the circumscribed circle of the filtering holes 6 is 2 μm.
In another embodiment, as shown in fig. 1, a groove 8 is formed at an interval on a side of the protective layer 1 close to the first high-efficiency low-resistance layer 2, a nanofiber layer 9 is disposed in the groove 8, the nanofiber layer 9 is disposed close to the protective layer 1, and a nucleating agent 10 is uniformly bonded to a side of the nanofiber layer 9 away from the protective layer 1, wherein the nucleating agent 10 is selected from Fe 3 O 4 、BaTiO 3 、SiO 2 And polytetrafluoroethylene. The material of inoxidizing coating 1 is the melt-blown coating, therefore its mechanical interception efficiency is limited, consequently sets up recess 8 and packs nanofiber layer 9 in recess 8 in inoxidizing coating 1 to evenly bond nucleating agent 10 on its surface for nanofiber layer 9 surface has the electric charge, so that it has certain electrostatic absorption effect, thereby improves the filtration efficiency of inoxidizing coating 1.
In another embodiment, as shown in fig. 3, the first high-efficiency low-resistance layer 2 includes horizontal fibers 11 and oblique fibers 12, the oblique fibers 12 are arranged in a cross manner with the horizontal fibers 11, the first high-efficiency low-resistance layer 2 is also a fiber layer made by printing nanofibers, which has a certain electrostatic adsorption effect and is convenient for selecting the arrangement of the fibers, so that the fibers can be regularly arranged, and the mechanical interception and filtration efficiency is improved. The dust containing layer 4 is an electrostatic spinning nanofiber net.
In another embodiment, as shown in fig. 3, the inclined fibers 12 and the transverse fibers 11 form an angle α, which is 30 °, and the mechanical interception and filtration efficiency can be improved to some extent.
In another embodiment, as shown in fig. 4, the nanofiber layer 9 includes a plurality of uniformly arranged meshes 13, the meshes 13 are arranged in a rectangular shape, two opposite corners of each mesh 13 are connected by a connecting fiber 14, the nanofiber layer 9 is also a fiber layer manufactured by printing nanofibers, and the meshes 13 arranged in the rectangular shape and each mesh 13 are connected with the opposite corners by the connecting fibers 14, so that the meshes 13 are reduced, and the mechanical interception and filtration efficiency is improved.
The above embodiments may be combined with each other.
The above embodiments are not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification of the above embodiments.
Claims (7)
1. A high-efficiency low-resistance composite filter material is characterized in that: the filter material is sequentially provided with a protective layer, a first high-efficiency low-resistance layer, an electrostatic adsorption layer, a dust holding layer and a second high-efficiency low-resistance layer from outside to inside, wherein the second high-efficiency low-resistance layer comprises a plurality of continuous and uniformly arranged filter holes, the filter holes are formed by enclosing composite fibers, the cross sections of the filter holes are regular hexagons, and the filter holes in the second high-efficiency low-resistance layer are consistent in size; the protective layer is melt-blown cloth.
2. The high-efficiency low-resistance composite filter material as claimed in claim 1, wherein: the second high-efficiency low-resistance layer is arranged in a honeycomb shape, and the diameter of the composite fiber is 300-1000nm.
3. The high-efficiency low-resistance composite filter material as claimed in claim 2, wherein: the diameter of the circumcircle of the filtering hole is 1-3 μm.
4. The high-efficiency low-resistance composite filter material as claimed in claim 1, wherein: the groove that the interval set up is seted up to one side that the inoxidizing coating is close to first high-efficient low resistant layer, is provided with the nanofiber layer in the groove, and the nanofiber layer is close to that the inoxidizing coating sets up and one side that the inoxidizing coating was kept away from to the nanofiber layer evenly bonds and has the nucleating agent, the nucleating agent select from Fe 3 O 4 、BaTiO 3 、SiO 2 And polytetrafluoroethylene.
5. The high-efficiency low-resistance composite filter material as claimed in claim 2, wherein: the first high-efficiency low-resistance layer comprises horizontal fibers and oblique fibers, the horizontal fibers are horizontally arranged, the oblique fibers and the horizontal fibers are arranged in a crossed mode, and the dust containing layer is an electrostatic spinning nanofiber net.
6. The high-efficiency low-resistance composite filter material as claimed in claim 5, wherein: the included angle between the oblique fibers and the transverse fibers is alpha, and alpha is 30 degrees.
7. The high-efficiency low-resistance composite filter material as claimed in claim 4, wherein: the nanofiber layer comprises a plurality of uniformly arranged meshes, the meshes are arranged in a rectangular mode, and two opposite angles of the meshes are connected through connecting fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223201332.5U CN218553421U (en) | 2022-11-30 | 2022-11-30 | High-efficiency low-resistance composite filtering material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223201332.5U CN218553421U (en) | 2022-11-30 | 2022-11-30 | High-efficiency low-resistance composite filtering material |
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| Publication Number | Publication Date |
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| CN218553421U true CN218553421U (en) | 2023-03-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223201332.5U Active CN218553421U (en) | 2022-11-30 | 2022-11-30 | High-efficiency low-resistance composite filtering material |
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| CN (1) | CN218553421U (en) |
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- 2022-11-30 CN CN202223201332.5U patent/CN218553421U/en active Active
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