CN105749622B - A kind of multi-layer fiber Compound filtering material - Google Patents

A kind of multi-layer fiber Compound filtering material Download PDF

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Publication number
CN105749622B
CN105749622B CN201610281384.8A CN201610281384A CN105749622B CN 105749622 B CN105749622 B CN 105749622B CN 201610281384 A CN201610281384 A CN 201610281384A CN 105749622 B CN105749622 B CN 105749622B
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layer
filter material
mesh
filter
inner support
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CN105749622A (en
Inventor
杨淼
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BEIJING ALL-OF FILLER TECHNOLOGY DEVELOPMENT CORPORATE
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BEIJING ALL-OF FILLER TECHNOLOGY DEVELOPMENT CORPORATE
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/02—Layer formed of wires, e.g. mesh
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/088—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/067—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of fibres or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
    • B01D2239/0241—Types of fibres, filaments or particles, self-supporting or supported materials comprising electrically conductive fibres or particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0407—Additives and treatments of the filtering material comprising particulate additives, e.g. adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)

Abstract

The present invention relates to a kind of multi-layer fiber Compound filtering material, the MULTILAYER COMPOSITE filter material is successively arranged inner support layer, polypropylene superfine fiber layer, fine fibre fiberglass layer, crude fibre fiberglass layer, outer support layer from inside to outside.MULTILAYER COMPOSITE filter material of the invention by sizes mesh number fiber filtering layer, it is combined with each other from outside to inside according to multiple filtering layers of coarse filtration to fine filtering, make the filter capacity distribution gradient of filter material, segmentation effectively intercepts various sizes of particle, it can avoid the filter screen filtration large particulate matter small with mesh number, caused the waste of filter material, improve the use cost of filter material, the filter efficiency of filter material is improved, the service life of filter material is improved and contaminant capacity can be accommodated.

Description

A kind of multi-layer fiber Compound filtering material
Technical field
The present invention relates to the filtering material fields of fluid liquid, and in particular to a kind of multi-layer fiber Compound filtering material, it is especially suitable Multi-layer fiber for, there is still a need for the filter material for reaching high-precision filtration requirement, further relating to be made by this kind of filter material under special industrial and mineral Composite filter element.
Background technique
Filtering is the liquid under motive force or other external forces in suspension (or containing solid particle fever gas) (or gas) penetrates medium, and solid particle and other substances are retained by filter medium, to make solid and other substances and liquid The operation of (or gas) separation.Therefore, more demanding to filtering material, need to there are preferable mechanical performance, service performance and filtering Performance.
Filter core is to the key element for controlling oil cleanliness in hydraulic, lubricating system, and the performance of filter core directly affects The reliability and service life of filtration system work, with the propulsion of China's modernization of industry process, equipment towards at high speed, In high precision, high automation direction development, more stringent requirements are proposed for this reliability to filter element.Due to most equipment faults It is that caused by wearing because of particulate pollutant, by the effective control polluted to oil pumping system, can achieve control cost, drops Low energy consumption improves the basic goal of equipment dependability.
Currently, well known filter cartridge construction is composed of single layer filter material, upper and lower end cap, sealing, inner and outer pipes, glue, After liquid passes through filter element filtering material, by impurity barrier in the outer or inner surface of filtering material, liquid filtering is realized.But very Multi-product has only reached single filter effect, since the limitation of space and structure cannot accomplish the duplication of effect same, influences Filter effect.
Summary of the invention
The object of the present invention is to provide a kind of multi-layer fiber Compound filtering materials, multiple by using the filtering layer of different size hole It closes, improves the use cost of filter material, improve the filter efficiency of filter material, improve the service life of filter material and pollution can be accommodated Amount.
The purpose of the present invention is be achieved through the following technical solutions:
A kind of multi-layer fiber Compound filtering material, the MULTILAYER COMPOSITE filter material are successively arranged inner support layer, polypropylene from inside to outside Superfine fibre layer, fine fibre fiberglass layer, crude fibre fiberglass layer, outer support layer, the inner support layer is with outer support layer for being formed MULTILAYER COMPOSITE filter material, and reinforcement effect is played, prevent it from fractureing, the crude fibre fiberglass layer centering is effectively blocked through particle It cuts, fine fibre fiberglass layer efficiently intercepts critical size particle, and polypropylene superfine fiber layer is to less than critical size one The pollution particle of magnitude is efficiently intercepted, and guarantees the cleannes grade of oil liquid after filter, stops outside filtering layer during the filtration process, Fibre shedding caused by due to the strength of materials and adhesive, polypropylene superfine fiber layer pass through electrostatic treatment, block in physics While cutting pollution particle, it can be formed by the granular absorption for being less than aperture in filter material to ultra-fine under the action of own electric field Effective interception of particle.
Further, as a kind of implementable solution, Buddhist nun is equipped between the inner support layer and polypropylene superfine fiber layer Imperial woven mesh layer, the nylon yarn that nylon mesh grid layer has intensity high weave, and for precision between 200-300 mesh, nylon is fine Dimension resistance is small, intensity is high, material dense uniform, guarantees to be greater than 75 microns in the state that filter core superpressure is using even critical conquassation The particulate pollutant of left and right is intercepted at material internal, not will lead to the generation of system crash accident.
Further, it is equipped with as a kind of implementable solution, between the inner support layer and polypropylene superfine fiber layer anti- Electrostatic protection layer, which adds special conductive materials to be made by nylon fiber, for exporting electrostatic.
Further, filter material is equipped with as a kind of implementable solution, between the crude fibre fiberglass layer and outer support layer to protect Sheath, filter material is protective layer used in protecting MULTILAYER COMPOSITE filter material under the impact of folding, extruding and liquid stream, its generation is prevented to be broken, It tears, while filtering the large granule in oil liquid, form the first line of defence of pollutant, filter material service life 20-30% can be promoted.
Further, as a kind of implementable solution, the mesh number range of the polypropylene superfine fiber layer is 20 μm of -50 μ M, the mesh number range of the fine fibre fiberglass layer are 1 μm -50 μm, and the mesh number range of the crude fibre fiberglass layer is 5 μm -100 μm.
Further, as a kind of implementable solution, the inner support layer and outer support layer are the metal of -200 mesh of 4 mesh Net, wherein the mesh number of inner support layer is greater than the mesh number of nylon mesh grid layer, and the mesh number of outer support layer is greater than crude fibre fiberglass layer Mesh number.
A kind of multi-layer fiber combined filtration filter core, the end cap including its upper and lower ends of filter core and spiral-lock, the filter core and end With the glue sticking that heatproof is alkaline-resisting between lid, wherein end cap described in side is equipped with centre bore, and the filter core is successively arranged from inside to outside It is covered with the inner support tube and outer support pipe of mesh, the inner support tube and outer support pipe are the metallic cylinder or modeling of densely covered aperture Expect cylinder, MULTILAYER COMPOSITE filter material filter material is equipped between the inner support tube and outer support pipe.
The MULTILAYER COMPOSITE filter material filter material is successively arranged inner support layer, polypropylene superfine fiber layer, fine fibre from inside to outside Fiberglass layer, crude fibre fiberglass layer, outer support layer.
Further, as a kind of implementable solution, Buddhist nun is equipped between the inner support layer and polypropylene superfine fiber layer Imperial woven mesh layer.
Further, it is equipped with as a kind of implementable solution, between the inner support layer and polypropylene superfine fiber layer anti- Electrostatic protection layer, which adds special conductive materials to be made by nylon fiber, for exporting electrostatic, can prevent filter material Part absorption is excessive, and filter material filtering is uneven, improves filter material service life.
Further, filter material is equipped with as a kind of implementable solution, between the crude fibre fiberglass layer and outer support layer to protect Sheath.
The invention has the benefit that
1, MULTILAYER COMPOSITE filter material of the invention by sizes mesh number fiber filtering layer, from outside to inside according to coarse filtration to fine filtering Multiple filtering layers be combined with each other, make the filter capacity distribution gradient of filter material, segmentation effectively intercepts various sizes of particle, can The filter screen filtration large particulate matter small with mesh number is avoided, the waste of filter material is caused, improves the use cost of filter material, is promoted The filter efficiency of filter material improves the service life of filter material and can accommodate contaminant capacity.
2, the fibers adsorption effect of multiple fibrous layers of the invention can have the effect of good process absorption to little particle, by In taking gradient fiber composite technology, the pollutant holding capability of filter material is substantially increased.
3, hydraulic, lubricating system is inevitably present the intrusion of dampening, and Compound filtering material of the invention uses polypropylene material Material and glass, nylon fiber MULTILAYER COMPOSITE form, and effectively reduce influence of the W/O part to filter effect.
4, filter material of the invention is formed by fiber at Filamentous successively graded composite, mentions the porosity of unit area significantly Height, permeability is strong, realizes in-depth filtration, pollutes 50%-99% of the depth of penetration up to filter medium thickness of particle, wherein There is the filter layer of 50% or more thickness for capturing pollution particle, substantially increases contamination capacity and service life.
5, the present invention can be realized by composite nylon woven mesh layer puts rupture, using the high nylon yarn square hole knot of the strength of materials Structure weaves, and hole is uniform, is unlikely to deform, and pollutant and upstream filter material can be kept to be greater than the particle in aperture not under High Pressure Difference Into downstream.
Detailed description of the invention
Below according to attached drawing, invention is further described in detail.
Fig. 1 is the sectional structure chart of multi-layer fiber Compound filtering material described in the embodiment of the present invention 1；
Fig. 2 is the sectional structure chart of multi-layer fiber Compound filtering material described in the embodiment of the present invention 2；
Fig. 3 is the sectional structure chart of multi-layer fiber Compound filtering material described in the embodiment of the present invention 3；
Fig. 4 is the sectional structure chart of multi-layer fiber Compound filtering material described in the embodiment of the present invention 4；
Fig. 5 is the sectional structure chart of the multi-layer fiber combined filtration filter core of any one in 1-4 of the embodiment of the present invention.
In figure:
1, MULTILAYER COMPOSITE filter material；2, inner support layer；3, nylon mesh grid layer；4, antistatic protection layer；5, polypropylene superfine Fibrous layer；6, fine fibre fiberglass layer；7, crude fibre fiberglass layer；8, filter material protective layer；9, outer support layer；10, end cap；11, center Hole；12, inner support tube；13, outer support pipe.
Specific embodiment
Embodiment 1
As shown in Figure 1, a kind of multi-layer fiber Compound filtering material described in the embodiment of the present invention, the MULTILAYER COMPOSITE filter material 1 from It is interior to be successively arranged inner support layer 2, polypropylene superfine fiber layer 5, fine fibre fiberglass layer 6, crude fibre fiberglass layer 7, outer support to outer Layer 9, wherein the mesh number range of the polypropylene superfine fiber layer is 20 μm -50 μm, the mesh number range of the fine fibre fiberglass layer It is 1 μm -50 μm, the mesh number range of the crude fibre fiberglass layer is 5 μm -100 μm；The inner support layer and outer support layer are 4 The metal mesh of -200 mesh of mesh, wherein the mesh number of inner support layer is greater than the mesh number of nylon mesh grid layer, and the mesh number of outer support layer is greater than The mesh number of crude fibre fiberglass layer.
Embodiment 2
As shown in Fig. 2, a kind of multi-layer fiber Compound filtering material described in the embodiment of the present invention, the MULTILAYER COMPOSITE filter material 1 from It is interior to be successively arranged inner support layer 2, nylon mesh grid layer 3, polypropylene superfine fiber layer 5, fine fibre fiberglass layer 6, crude fibre to outer Fiberglass layer 7, outer support layer 9, wherein the mesh number range of the polypropylene superfine fiber layer is 20 μm -50 μm, the fine fibre glass The mesh number range of fine layer is 1 μm -50 μm, and the mesh number range of the crude fibre fiberglass layer is 5 μm -100 μm；The inner support layer with Outer support layer is the metal mesh of -200 mesh of 4 mesh, and wherein the mesh number of inner support layer is greater than the mesh number of nylon mesh grid layer, outer support The mesh number of layer is greater than the mesh number of crude fibre fiberglass layer.
Embodiment 3
As shown in figure 3, a kind of multi-layer fiber Compound filtering material described in the embodiment of the present invention, the MULTILAYER COMPOSITE filter material 1 from It is interior to be successively arranged inner support layer 2, nylon mesh grid layer 3, antistatic protection layer 4, polypropylene superfine fiber layer 5, fine fibre to outer Fiberglass layer 6, crude fibre fiberglass layer 7, outer support layer 9, wherein the mesh number range of the polypropylene superfine fiber layer is 20 μm of -50 μ M, the mesh number range of the fine fibre fiberglass layer are 1 μm -50 μm, and the mesh number range of the crude fibre fiberglass layer is 5 μm -100 μm； The inner support layer and outer support layer are the metal mesh of -200 mesh of 4 mesh, and wherein the mesh number of inner support layer is greater than nylon mesh grid The mesh number of layer, the mesh number of outer support layer are greater than the mesh number of crude fibre fiberglass layer.
Compared with embodiment 2, the filter material service life of the multi-layer fiber Compound filtering material can promote 10-20%.
Embodiment 4
As shown in figure 4, a kind of multi-layer fiber Compound filtering material described in the embodiment of the present invention, the MULTILAYER COMPOSITE filter material 1 from It is interior to be successively arranged inner support layer 2, nylon mesh grid layer 3, antistatic protection layer 4, polypropylene superfine fiber layer 5, fine fibre to outer Fiberglass layer 6, crude fibre fiberglass layer 7, filter material protective layer 8, outer support layer 9, wherein the mesh number model of the polypropylene superfine fiber layer Enclosing is 20 μm -50 μm, and the mesh number range of the fine fibre fiberglass layer is 1 μm -50 μm, the mesh number range of the crude fibre fiberglass layer It is 5 μm -100 μm；The inner support layer and outer support layer are the metal mesh of -200 mesh of 4 mesh, and wherein the mesh number of inner support layer is big In the mesh number of nylon mesh grid layer, the mesh number of outer support layer is greater than the mesh number of crude fibre fiberglass layer.
Compared with embodiment 3, the filter material service life of the multi-layer fiber Compound filtering material can promote 20-30%.
As shown in figure 5, the multi-layer fiber combined filtration filter core made by above-mentioned multi-layer fiber Compound filtering material, including filter core And the end cap 10 of spiral-lock its upper and lower ends, with the glue sticking that heatproof is alkaline-resisting between the filter core and end cap 10, wherein described in side End cap 10 is equipped with centre bore 11.
The filter core is successively arranged the inner support tube 12 and outer support pipe 13 for being covered with mesh, the inner support tube from inside to outside MULTILAYER COMPOSITE filter material 1 is equipped between 12 and outer support pipe 13.MULTILAYER COMPOSITE filter material 1 is divided in gradient by the filtering layer of coarse filtration to fine filtering Cloth, segmentation effectively intercept various sizes of particle, can effectively promote filter efficiency, the filter material service life, can accommodate contaminant capacity, reduce The fibre shedding of filter material.
As shown in Fig. 2, the multi-layer fiber that multi-layer fiber Compound filtering material described in 1,2,3,4 makes through the foregoing embodiment Combined filtration filter core, the end cap 10 including its upper and lower ends of filter core and spiral-lock are alkaline-resisting with heatproof between the filter core and end cap 10 Glue sticking, wherein end cap 10 described in side be equipped with centre bore 11.
The filter core is successively arranged the inner support tube 12 and outer support pipe 13 for being covered with mesh, the inner support tube from inside to outside MULTILAYER COMPOSITE filter material 1 is equipped between 12 and outer support pipe 13.MULTILAYER COMPOSITE filter material 1 is divided in gradient by the filtering layer of coarse filtration to fine filtering Cloth, segmentation effectively intercept various sizes of particle, can effectively promote filter efficiency, the filter material service life, can accommodate contaminant capacity, reduce The fibre shedding of filter material.
The present invention is not limited to above-mentioned preferred forms, anyone can show that other are various under the inspiration of the present invention The product of form, however, make any variation in its shape or structure, it is all that there is skill identical or similar to the present application Art scheme, is within the scope of the present invention.

Claims (3)

1. a kind of multi-layer fiber Compound filtering material, it is characterised in that: the MULTILAYER COMPOSITE filter material is successively arranged inner support from inside to outside Layer, nylon mesh grid layer, polypropylene superfine fiber layer, fine fibre fiberglass layer, crude fibre fiberglass layer, filter material protective layer, outer support Layer；
Antistatic protection layer is equipped between the inner support layer and polypropylene superfine fiber layer；
The polypropylene superfine fiber layer passes through electrostatic treatment；
The mesh number range of the polypropylene superfine fiber layer is 20 μm -50 μm, and the mesh number range of the fine fibre fiberglass layer is 1 μ M-50 μm, the mesh number range of the crude fibre fiberglass layer is 5 μm -100 μm.
2. multi-layer fiber Compound filtering material according to claim 1, it is characterised in that: the inner support layer and outer support layer are equal For the metal mesh of -200 mesh of 4 mesh.
3. multi-layer fiber Compound filtering material according to claim 1, it is characterised in that: including filter core and spiral-lock its upper and lower ends End cap, with the alkaline-resisting glue sticking of heatproof between the filter core and end cap, wherein end cap described in side is equipped with centre bore, the filter Core is successively arranged the inner support tube and outer support pipe for being covered with mesh from inside to outside, is all provided between the inner support tube and outer support pipe There is MULTILAYER COMPOSITE filter material.
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CN109931266A (en) * 2017-12-19 2019-06-25 天津天美环保科技有限公司 Filter core is used in a kind of separation of Novel oil gas
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CN108295584A (en) * 2018-04-17 2018-07-20 东莞市东田过滤技术有限公司 A kind of filter core and its filter for exempting from metal material
CN108840463A (en) * 2018-08-10 2018-11-20 安徽原野滤材有限公司 A kind of double-deck carbon fiber structural filter cloth of compound structure for new residence
CN108939693A (en) * 2018-10-10 2018-12-07 响水县宝吉纺织有限公司 A kind of composite filtering cloth
CN111888945B (en) * 2020-07-31 2023-03-31 云南电网有限责任公司电力科学研究院 High-precision nano composite film
CN112121534A (en) * 2020-08-31 2020-12-25 江苏申达净化设备有限公司 Filter material and air filter
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