CN114832504A - Composite filter felt and production process thereof - Google Patents

Composite filter felt and production process thereof Download PDF

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Publication number
CN114832504A
CN114832504A CN202210372090.1A CN202210372090A CN114832504A CN 114832504 A CN114832504 A CN 114832504A CN 202210372090 A CN202210372090 A CN 202210372090A CN 114832504 A CN114832504 A CN 114832504A
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China
Prior art keywords
filter
filter layer
layer
cloth
fiber
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Withdrawn
Application number
CN202210372090.1A
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Chinese (zh)
Inventor
杨加左
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Jiangsu Senyuan Environmental Protection Material Co ltd
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Jiangsu Senyuan Environmental Protection Material Co ltd
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Priority to CN202210372090.1A priority Critical patent/CN114832504A/en
Publication of CN114832504A publication Critical patent/CN114832504A/en
Withdrawn legal-status Critical Current

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    • 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
    • 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
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • 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
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2003—Glass or glassy material
    • B01D39/2017—Glass or glassy material the material being filamentary or fibrous
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
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    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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    • Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Filtering Materials (AREA)

Abstract

The invention provides a composite filter felt and a production process thereof, and relates to the technical field of filter felts, wherein the composite filter felt comprises a first filter layer, a second filter layer, a coating layer and base cloth, wherein the first filter layer and the second filter layer are both in a wave shape, filter filler is filled between the first filter layer and the second filter layer, the coating layer is arranged outside the first filter layer and the second filter layer, the base cloth is provided with two groups, and the two groups of base cloth are respectively arranged on the upper surface and the lower surface of the coating layer; the first filter layer is formed by laminating a plurality of layers of filter cloth, the filter cloth is formed by interweaving warp and weft of a first fiber yarn in a single layer, and a winding ring is wound on the first fiber yarn; according to the invention, the first filter layer and the second filter layer are arranged in a wave shape, so that the contact area with the filtered gas is increased, the first fiber yarn is wound to form a winding ring, the two layers of second fiber yarns are wound to form a composite winding ring, the gas is subjected to two-step stepped filtering, and the filtering capacity and the filtering effect are improved by matching with the wave-shaped contact area.

Description

Composite filter felt and production process thereof
Technical Field
The invention relates to the technical field of filter felts, in particular to a composite filter felt and a production process thereof.
Background
The filter felt is a very common filter material applied at present, has the advantages of convenient manufacture and good filter effect, is widely used for household dust collectors, air purifiers and various air purification devices, the needled filter felt is divided into a plurality of types including glass fiber needled felt, polyester needled filter felt and the like, and the various filter felts have different air filtration effects and application places according to different raw materials and manufacturing processes for manufacturing the filter felt;
in the prior art, chemical fiber filter materials for filtering and dedusting mainly comprise chemical fiber filter materials such as terylene, polypropylene and the like, the filter materials mainly form a planar cloth layer, the planar cloth layer has a limited contact area with gas when filtering gas, the filtering effect is influenced, the collection efficiency of PM2.5 is low, and escaped PM2.5 fine particles can still cause irreversible harm to human health, so the invention provides a composite filter felt and a production process thereof to solve the problems in the prior art.
Disclosure of Invention
Aiming at the problems, the invention provides a composite filter felt and a production process thereof, wherein the composite filter felt and the production process thereof are used for filtering gas in a two-step mode, and the filter capacity and the filter effect are improved by matching with the wavy contact area.
In order to realize the purpose of the invention, the invention is realized by the following technical scheme: a composite filter felt comprises a first filter layer, a second filter layer, a coating layer and base cloth, wherein the first filter layer and the second filter layer are both wavy, filter filler is filled between the first filter layer and the second filter layer, the coating layer is arranged outside the first filter layer and the second filter layer, the base cloth is provided with two groups, and the two groups of base cloth are respectively arranged on the upper surface and the lower surface of the coating layer;
first filter layer comprises by the range upon range of multilayer filter cloth, and filter cloth is interweaved by first cellosilk individual layer longitude and latitude and forms, the winding has the winding circle on the first cellosilk, the second filter layer comprises by the range upon range of the fine filter cloth of multilayer, and the fine filter cloth is interweaved by the double-deck longitude and latitude of second cellosilk and forms, and is double-deck the winding has compound winding circle on the second cellosilk, base course cloth is woven by glass fiber and PTFE fibre and is formed.
The further improvement lies in that: the coating is one of polypropylene, polyurethane, polyethylene, polyolefin copolymer, the coating cladding is in the outside of first filter layer and second filter layer and to the both sides banding of first filter layer and second filter layer.
The further improvement lies in that: the upper surface and the lower surface of the coating layer are provided with air holes, the air holes are provided with a plurality of groups, the air holes at the lower part are communicated with the first filter layer and the base layer cloth at the lower part, and the air holes at the upper part are communicated with the second filter layer and the base layer cloth at the upper part.
The further improvement lies in that: the filter filler comprises ceramic filler and coke powder, and the ceramic filler and the coke powder are uniformly distributed between the first filter layer and the second filter layer.
The further improvement lies in that: the first filter layer is formed by laminating at least three layers of filter cloth, and the second filter layer is formed by laminating at least three layers of fine filter cloth.
The further improvement lies in that: the base cloth is connected with the first filter layer and the second filter layer through needling, and the caliber of the inner ring of the winding ring is larger than that of the inner ring of the composite winding ring.
The further improvement lies in that: the first fiber silk is one of straw fiber, keratin fiber and silk fibroin fiber, and the second fiber silk is one of viscose fiber, soybean protein fiber and bamboo silk fiber.
A production process of a composite filter felt comprises the following steps:
removing impurities and carding cotton from the first fiber yarns, the second fiber yarns, the glass fibers and the PTFE fibers;
Winding the first fiber yarns to form winding rings, and then weaving a plurality of single-layer first fiber yarns into filter cloth in a warp-weft mode;
connecting the three layers of filter cloth by needling to prepare a first filter layer;
winding two layers of second fiber yarns together to form a composite winding ring, and then weaving a plurality of second fiber yarns of the two layers into fine filter cloth in a warp-weft mode;
connecting the three layers of fine filter cloth by needling to prepare a second filter layer;
pressing the first filter layer and the second filter layer into a wave shape, filling ceramic filler and coke powder between the first filter layer and the second filter layer, coating a coating layer on the outer side, sealing the edge, and punching air holes;
the glass fiber and the PTFE fiber are woven into base cloth by long and short warps and wefts, and the two layers of base cloth are respectively connected with the first filter layer and the second filter layer by penetrating the coating layer by a needle punching method.
The further improvement lies in that: the first fiber yarns, the second fiber yarns, the glass fibers and the PTFE fibers are grabbed by a plucker, impurities in the first fiber yarns, the second fiber yarns, the glass fibers and the PTFE fibers are removed by an impurity removing machine, and then cotton carding treatment is carried out by a carding machine.
The further improvement lies in that: coating layers are coated on the outer sides of the first filter layer and the second filter layer and are mutually bonded through a polypropylene fiber anti-corrosion glue layer.
The beneficial effects of the invention are as follows:
1. according to the invention, the first filter layer and the second filter layer are arranged in a wave shape, so that the contact area with the filtered gas is increased, the first fiber yarn is wound to form a winding ring, the two layers of second fiber yarns are wound to form a composite winding ring, the gas is subjected to two-step stepped filtering, and the filtering capacity and the filtering effect are improved by matching with the wave-shaped contact area.
2. According to the invention, the PM2.5 trapping efficiency is improved by uniformly filling the ceramic filler and the coke powder.
3. The glass fiber and PTFE fiber woven base layer cloth is used as an integral supporting base body, so that the temperature resistance and weather resistance are improved.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a schematic view of a first filament of the present invention;
FIG. 3 is a schematic view of a second filament of the present invention;
FIG. 4 is a schematic representation of a glass fiber, PTFE fiber, of the present invention;
FIG. 5 is a flow chart of the present invention.
Wherein: 1. a first filter layer; 2. a second filter layer; 3. a coating layer; 4. base layer cloth; 5. a first fiber filament; 6. winding a ring; 7. a second fiber filament; 8. winding a ring in a composite mode; 9. glass fibers; 10. PTFE fiber; 11. air holes are formed; 12. a ceramic filler; 13. and (4) coke powder.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
Example one
According to the drawings of fig. 1, 2, 3 and 4, the embodiment provides a composite filter felt, which comprises a first filter layer 1, a second filter layer 2, a coating layer 3 and a base cloth 4, wherein the first filter layer 1 and the second filter layer 2 are both in a wave shape, filter filler is filled between the first filter layer 1 and the second filter layer 2, the coating layer 3 is arranged outside the first filter layer 1 and the second filter layer 2, the base cloth 4 is provided with two groups, and the two groups of base cloths 4 are respectively arranged on the upper surface and the lower surface of the coating layer 3;
first filter layer 1 comprises by the range upon range of multilayer filter cloth, and filter cloth is interweaved by 5 individual layers longitude and latitude of first cellosilk and forms, the coiling has winding circle 6 on the first cellosilk 5, second filter layer 2 comprises by the range upon range of multilayer fine filter cloth, and the fine filtration cloth is interweaved by 7 double-deck longitude and latitude of second cellosilk and forms, and is double-deck the coiling has compound winding circle 8 on the second cellosilk 7, base course cloth 4 is woven by glass fiber 9 and PTFE fibre 10 and is formed. Set first filter layer 1 and second filter layer 2 into the wave, increase and filter gaseous area of contact, wind out through first cellosilk 5 and wind and make circle 6, constitute first step filtration pore, wind into compound winding circle 8 through two-layer second cellosilk 7, constitute the filtration pore of second step, because the inner circle bore of winding circle 6 is greater than the inner circle bore of compound winding circle 8, be convenient for to gaseous two-step cascaded filtration, cooperation wavy area of contact, further improve and filter capacity volume capacity and filter effect.
Coating 3 is polyurethane, coating 3 cladding is in the outside of first filter layer 1 and second filter layer 2 and to the both sides banding of first filter layer 1 and second filter layer 2. The coating layer is used for completely covering the outer sides of the first filter layer 1 and the second filter layer 2, and the first filter layer 1 and the second filter layer 2 are protected comprehensively.
The upper and lower faces of the coating layer 3 are provided with air holes 11, the air holes 11 are provided with a plurality of groups, the air holes 11 at the lower part are communicated with the first filter layer 1 and the lower part of the base layer cloth 4, the air holes 11 at the upper part are communicated with the second filter layer 2 and the upper part of the base layer cloth 4. For gas circulation.
The filter filler comprises a ceramic filler 12 and coke powder 13, and the ceramic filler 12 and the coke powder 13 are uniformly distributed between the first filter layer 1 and the second filter layer 2. The uniform filling of the ceramic filler 12 and the coke powder 13 is beneficial to improving the collection efficiency of PM 2.5.
The first filter layer 1 is formed by laminating three layers of filter cloth, and the second filter layer 2 is formed by laminating three layers of fine filter cloth. And the filtering efficiency of the particles with the particle size of less than 0.5 mu m reaches more than 98 percent through verification.
The base layer cloth 4 is connected with the first filter layer 1 and the second filter layer 2 through needling, and the inner ring caliber of the winding ring 6 is larger than that of the composite winding ring 8. The first fiber yarns 5 are wound to form the winding ring 6 to form a first-step filtering hole, the two layers of second fiber yarns 7 are wound to form the composite winding ring 8 to form a second-step filtering hole, and the inner ring caliber of the winding ring 6 is larger than that of the composite winding ring 8, so that two-step filtration of gas is facilitated.
The first fiber yarns 5 are straw fibers, the second fiber yarns 7 are soybean protein fibers, and the fibers are applied to secondary recycling of crop wastes, so that the energy is saved, the environment is protected, and the cost is saved.
Example two
According to fig. 5, the present embodiment provides a production process of a composite filter felt, which includes the following steps:
grabbing the first fiber 5, the second fiber 7, the glass fiber 9 and the PTFE fiber 10 by a plucker, removing impurities in the first fiber by an impurity remover, and carding by a carding machine;
winding the first fiber 5 to form a winding ring 6, and weaving a plurality of single-layer first fibers 5 into filter cloth in a warp-weft manner;
connecting the three layers of filter cloth by needling to prepare a first filter layer 1;
winding two layers of second fiber yarns 7 together to form a composite winding ring 8, and then weaving a plurality of second fiber yarns 7 in two layers into fine filter cloth in a warp and weft manner;
connecting the three layers of fine filter cloth by needling to prepare a second filter layer 2;
pressing the first filter layer 1 and the second filter layer 2 into a wave shape, filling ceramic filler 12 and coke powder 13 between the first filter layer and the second filter layer, coating a coating layer 3 on the outer side, mutually bonding the coating layer with the polypropylene fiber anti-corrosion adhesive layer, sealing the edge and punching an air hole 11; the first filter layer 1 and the second filter layer 2 are arranged in a wave shape, so that the contact area with a filtered gas is increased, the first fiber yarn 5 is wound to form a winding ring 6 to form a first-step filtering pore, the two layers of second fiber yarns 7 are wound to form a composite winding ring 8 to form a second-step filtering pore, and the caliber of the inner ring of the winding ring 6 is larger than that of the inner ring of the composite winding ring 8, so that the gas is conveniently subjected to two-step stepped filtering, the filtering capacity and the filtering effect are further improved by matching the wave-shaped contact area, and the ceramic filler 12 and the coke powder 13 are uniformly filled, so that the collection efficiency of PM2.5 is improved;
The glass fiber 9 and the PTFE fiber 10 are woven into the base layer cloth 4 by long and short warps and wefts, the base layer cloth 4 is used as an integral supporting base body to improve the temperature resistance and weather resistance, and the two layers of base layer cloth 4 penetrate through the coating layer 3 by a needle punching method to be respectively connected with the first filter layer 1 and the second filter layer 2.
Verification example:
Figure BDA0003588974730000071
according to the invention, the first filter layer 1 and the second filter layer 2 are arranged in a wave shape, so that the contact area with a filtered gas is increased, the winding ring 6 is wound by the first fiber yarns 5 to form a first-step filtering pore, the composite winding ring 8 is wound by the two layers of second fiber yarns 7 to form a second-step filtering pore, and the caliber of the inner ring of the winding ring 6 is larger than that of the inner ring of the composite winding ring 8, so that the gas is conveniently subjected to two-step filtering, the filtering capacity and the filtering effect are further improved by matching with the wave-shaped contact area, and the ceramic filler 12 and the coke powder 13 are uniformly filled, so that the PM2.5 trapping efficiency is improved; meanwhile, the coating layers are completely covered on the outer sides of the first filter layer 1 and the second filter layer 2, so that the first filter layer 1 and the second filter layer 2 are comprehensively protected, the glass fiber 9 and PTFE fiber 10 woven base layer cloth is used as an integral supporting base body, the temperature resistance and weather resistance are improved, and the integral service life is longer.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides a compound filter felt, includes first filter layer (1), second filter layer (2), cladding (3) and base course cloth (4), its characterized in that: the first filter layer (1) and the second filter layer (2) are both wavy, filter fillers are filled between the first filter layer (1) and the second filter layer (2), the coating layers (3) are arranged outside the first filter layer (1) and the second filter layer (2), two groups of base layer cloth (4) are arranged, and the two groups of base layer cloth (4) are respectively arranged on the upper surface and the lower surface of the coating layers (3);
first filter layer (1) is overlapped by the multilayer filter cloth and is constituted, and the filter cloth is interweaved by first cellosilk (5) individual layer longitude and latitude and forms, the winding has winding circle (6) on first cellosilk (5), second filter layer (2) is overlapped by the fine filter cloth of multilayer and is constituted, and the fine filter cloth is interweaved by the double-deck longitude and latitude of second cellosilk (7) and forms, and is double-deck winding circle (8) is gone up to the winding on second cellosilk (7), base course cloth (4) are woven by glass fiber (9) and PTFE fibre (10) and are formed.
2. The composite filter felt according to claim 1, wherein: the coating layer (3) is one of polypropylene, polyurethane, polyethylene and polyolefin copolymer, and the coating layer (3) is coated on the outer sides of the first filter layer (1) and the second filter layer (2) and seals edges of two sides of the first filter layer (1) and the second filter layer (2).
3. A composite filter felt according to claim 2, wherein: the upper and lower faces of the coating layer (3) are provided with air holes (11), and the air holes (11) are provided with a plurality of groups and a lower part, wherein the air holes (11) are communicated with the first filter layer (1) and the lower part, the base layer cloth (4) is arranged above the base layer cloth, and the air holes (11) are communicated with the second filter layer (2) and the upper part, and the base layer cloth (4) is arranged above the base layer cloth.
4. A composite filter felt according to claim 3, wherein: the filter filler comprises a ceramic filler (12) and coke powder (13), and the ceramic filler (12) and the coke powder (13) are uniformly distributed between the first filter layer (1) and the second filter layer (2).
5. The composite filter felt according to claim 4, wherein: the first filter layer (1) is formed by laminating at least three layers of filter cloth, and the second filter layer (2) is formed by laminating at least three layers of fine filter cloth.
6. The composite filter felt according to claim 5, wherein: the base cloth (4) is connected with the first filter layer (1) and the second filter layer (2) through needling, and the caliber of the inner ring of the winding ring (6) is larger than that of the inner ring of the composite winding ring (8).
7. The composite filter felt according to claim 6, wherein: the first fiber filaments (5) are one of straw fibers, keratin fibers and silk fibroin fibers, and the second fiber filaments (7) are one of viscose fibers, soybean protein fibers and bamboo filament fibers.
8. The production process of the composite filter felt is characterized by comprising the following steps of:
impurity removal and cotton carding treatment are carried out on the first fiber yarns (5), the second fiber yarns (7), the glass fibers (9) and the PTFE fibers (10);
winding the first fiber yarns (5) to form winding rings (6), and then weaving the single-layer first fiber yarns (5) into filter cloth in a warp-weft mode;
connecting the three layers of filter cloth by needling to prepare a first filter layer (1);
winding two layers of second fiber yarns (7) together to form a composite winding ring (8), and then weaving a plurality of second fiber yarns (7) of the two layers into fine filter cloth in a warp and weft manner;
Connecting the three layers of fine filter cloth by needling to prepare a second filter layer (2);
pressing the first filter layer (1) and the second filter layer (2) into a wave shape, filling ceramic filler (12) and coke powder (13) between the first filter layer and the second filter layer, coating a coating layer (3) on the outer side, sealing edges and punching air holes (11);
glass fibers (9) and PTFE fibers (10) are woven into a base layer cloth (4) by long and short warps and wefts, and the two layers of base layer cloth (4) penetrate through the coating layer (3) by a needle punching method and are respectively connected with the first filter layer (1) and the second filter layer (2).
9. The process of claim 8, wherein the first and second steps comprise: the first fiber yarn (5), the second fiber yarn (7), the glass fiber (9) and the PTFE fiber (10) are grabbed by a plucker, impurities in the first fiber yarn are removed by an impurity removing machine, and then carding treatment is carried out by a carding machine.
10. The process of claim 9 for the production of a composite filter felt, wherein: coating layers (3) are coated on the outer sides of the first filter layer (1) and the second filter layer (2) and are mutually bonded through polypropylene fiber anti-corrosion glue layers.
CN202210372090.1A 2022-04-11 2022-04-11 Composite filter felt and production process thereof Withdrawn CN114832504A (en)

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