CN103084006A - Melt-blow filtering core and preparation process thereof - Google Patents
Melt-blow filtering core and preparation process thereof Download PDFInfo
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- CN103084006A CN103084006A CN2013100229270A CN201310022927A CN103084006A CN 103084006 A CN103084006 A CN 103084006A CN 2013100229270 A CN2013100229270 A CN 2013100229270A CN 201310022927 A CN201310022927 A CN 201310022927A CN 103084006 A CN103084006 A CN 103084006A
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- filter element
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- 238000002360 preparation method Methods 0.000 title claims description 8
- 238000001914 filtration Methods 0.000 title abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 71
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 48
- 239000004744 fabric Substances 0.000 claims abstract description 47
- 229920000742 Cotton Polymers 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000004804 winding Methods 0.000 claims abstract description 16
- 238000005507 spraying Methods 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 13
- 238000002844 melting Methods 0.000 claims description 12
- 230000008018 melting Effects 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 6
- 238000009987 spinning Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000010419 fine particle Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000003892 spreading Methods 0.000 claims description 3
- 230000007480 spreading Effects 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 4
- 239000010866 blackwater Substances 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000009298 carbon filtering Methods 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 239000003292 glue Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- Water Treatment By Sorption (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses a melt-blow filtering core. The melt-blow filtering core is successively provided with an outer layer PP cotton, a middle PP carbon cloth layer and an inner layer PP cotton from the exterior to the interior, wherein the outer layer PP cotton is formed through spraying silks; the PP carbon cloth layer is a middle layer arranged between an outer layer and an inner layer, and active carbon fine grains are scattered on the PP cotton through enwinding; and the inner layer PP cotton is formed by the spraying silks through winding. The melt-blow filtering core provided by the invention has the advantages that the arrangement of the inner layer PP cotton can prevent the active carbon fine grains from flowing out along the water; after the filtering core is changed and a faucet is opened, the clean water is directly flowed out, a water return valve is not needed to match, the structural complication of a filter is reduced, meanwhile, the output of black water is reduced, the operation is simple and convenient, and the environmental pollution and energy source waste are avoided; the middle PP carbon cloth layer adopts the PP cloth to closely pack the active carbon fine grains, a gluewater compound principle in the prior art is abandoned, the novel active carbon filtering core is exploited, the active carbon grains are fully contacted with the water, and the contacting ratio can achieve more than 90%; and the utilization ratio of active carbon is greatly strengthened, the filtering effect is improved, and the service life of the active carbon filtering core is prolonged.
Description
Technical Field
The invention relates to a filter element for water filtration.
Background
There are two types of filter cartridges for water filtration on the market today. One is a PP cotton filter element, which can only filter particles. The other is an active carbon filter element, and the production method is to add PE glue into the active carbon and make the active carbon into a cylindrical carbon rod by adopting the methods of pressure injection and extrusion. The defects of the active carbon filter element are as follows:
1. because the glue is used in the production process, the carbon particles and the glue are compounded, the contact surface is covered by the glue and can not be fully contacted with water, and the function of carbon for absorbing peculiar smell is reduced;
2. at present, when the active carbon filter element is used, the tiny particles of the loaded active carbon can come out along with water, so a water return valve is required to be installed on a filter adopting the filter element, the black water is drained to be used after the active carbon filter element is installed, the active function of carbon is greatly lost, and the cost of very large energy waste and water filtration is increased.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the existing defects and provides a melt-blown filter element with a novel structure, which has good water filtering effect and convenient use;
the invention also aims to provide a preparation process of the melt-blown filter element.
The purpose of the invention is realized by the following technical scheme:
a melt-blown filter element comprises an outer PP cotton layer, a PP carbon cloth layer and an inner PP cotton layer from outside to inside in sequence, wherein,
the outer PP cotton layer is formed by PP spinning;
the PP carbon cloth layer is an intermediate layer arranged between the outer layer and the inner layer and is formed by scattering activated carbon fine particles on PP cloth and winding;
the inner PP cotton layer is formed by spinning and winding.
Furthermore, the melt-blown filter element is of a hollow cylindrical structure. Wherein, the hollow core of the melt-blown filter element is a through hole with the diameter of phi 28-32 mm.
As the preferred scheme of the melt-blown filter element, the thickness of the outer PP cotton layer is 5-15mm, the thickness of the PP carbon cloth layer is 15-20mm, and the thickness of the inner PP cotton layer is 12-15mm, so that the filter effect is optimal and the cost performance is lowest.
A preparation process of a melt-blown filter element comprises the following steps:
step one, preparing inner PP cotton by a first extruder
a. Heating a first extruder to a PP melting point, melting PP particles into water, extruding the water into a mold with micropores, introducing hot air into the mold, and carrying out melt-blowing on the PP in the mold holes and air flow of the hot air into filaments by extrusion of a screw;
b. b, rotating the PP filaments melt-blown in the step a into a cylinder by using a receiving vehicle to rotate continuously, forming inner PP cotton of the melt-blown filter element, feeding materials by threads at the front end of the receiving vehicle, and pushing the cylinder forward to the range of a second PP carbon cloth;
step two, preparing the PP carbon cloth layer by a second extruder
a. Heating the second extruder to the temperature for melting PP, extruding the PP into a die through a screw, spraying the PP and hot air together, and spraying the PP and hot air onto a mesh belt prepared in advance, wherein the mesh belt forms a layer of PP cloth in the process of slowly rotating;
b, spreading active carbon particles on the surface of the PP cloth in the process of pulling the PP cloth backwards;
c. drawing a receiving vehicle of the previous machine, winding a plurality of layers of PP cloth scattered with activated carbon particles on the inner PP cotton formed in the step one to form a PP carbon cloth layer of the melt-blown filter element, moving forwards in the winding process, and entering the range of a third machine;
step three, preparing outer PP cotton by a third extruder
Heating the third extruder to the PP melting point temperature, extruding PP particles into a die through a screw rod, spraying the PP particles out of the die together with hot air, and winding the PP particles on the outer surface of the PP carbon cloth layer formed in the second step to form outer PP cotton;
and step four, automatic cutting.
Preferably, the die in the first step and the third step has micropores with a diameter of 0.28 mm to 0.45 mm, and is most preferably micropores with a diameter of 0.38 mm.
Preferably, the receiving vehicle rotates at a speed of 50 rpm in each step.
The mesh belt is a steel wire mesh, the diameter of the steel wire is less than 0.2mm, and the average mesh aperture is phi 0.2 mm-phi 0.4 mm.
The invention has the beneficial effects that:
the melt-blown filter element provided by the invention is skillfully improved by combining the characteristics of the conventional PP filter element and the activated carbon core and is divided into three layers. Wherein,
1. the inner PP cotton layer can prevent fine active carbon particles from flowing out along with water, so that after the filter is replaced, a long-boiling water tap can directly discharge clear water without matching with a water return valve, the structural complication is reduced because of no filter, the production of black water is reduced, the operation is simple and convenient, and the pollution to the environment and the waste of energy are avoided;
2. the middle PP carbon cloth layer adopts PP cloth to tightly wrap the activated carbon particles, the glue compounding principle in the prior art is abandoned, a novel activated carbon filter element is developed, the activated carbon particles can be completely contacted with water, the contact rate reaches more than 98%, the utilization rate of activated carbon is greatly enhanced, the filtering effect is improved, and the service life of the activated carbon filter element can be prolonged.
3. The cotton setting of outer PP makes whole melt-blown filter core structure compacter, and the effectual drop that prevents the PP carbon cloth layer has improved the availability factor and the life of filter core.
The preparation process of the melt-blown filter element provided by the invention has the advantages of simple principle, no need of special industrial conditions, easiness in operation, compact and reasonable whole process, and capability of realizing large-scale industrial production of the melt-blown filter element.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a melt-blown filter cartridge according to example 1 of the present invention;
FIG. 2 is a schematic view of a flow sheet apparatus for a melt-blown filter element preparation process according to example 2 of the present invention;
wherein, 1-outer PP cotton, 2-PP carbon cloth layer, 3-inner PP cotton.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1:
a melt-blown filter element is structurally shown in figure 1, a hollow core with the diameter of 28-32mm is arranged in the middle, and an outer PP cotton layer 1, a PP carbon cloth layer 2 and an inner PP cotton layer 3 are sequentially arranged from outside to inside, wherein,
the inner PP cotton layer is a cylindrical inner core formed by spinning and winding, and the thickness of the inner PP cotton layer is 12-15 mm;
the PP carbon cloth layer is an intermediate layer arranged between the outer layer and the inner layer, is formed by scattering activated carbon fine particles on PP cloth and winding the PP cloth layer on inner PP cotton layer by layer, and the thickness of the PP carbon cloth layer is set to be 15-20 mm;
the outer PP cotton layer is formed by PP spinning and is wrapped on the outer surface of the PP carbon cloth layer, and the thickness of the outer PP cotton layer is set to be 5-15 mm.
Example 2:
referring to fig. 2, the preparation process of the melt-blown filter element includes three ranges of extrusion operations, wherein each range of extrusion operation is performed by using three extruders and three air heaters, the three extruders in the three ranges are received by the same receiving vehicle through continuous 360-degree rotation, and the three air heaters are uniformly distributed by compressing air by a screw compressor into an air storage tank, and specifically includes the following steps:
step one, preparing inner PP cotton by a first extruder
a. Heating the extruder to a PP melting point, melting PP particles into water, extruding the water into a die with phi 38 micropores, introducing hot air into the die, and carrying out melt-blowing on the PP in the holes of the die and the air flow of the hot air into filaments by extrusion of a screw;
b. b, rotating the PP filaments melt-blown in the step a into a cylinder by using a receiving vehicle to rotate continuously, forming inner PP cotton of the melt-blown filter element, feeding materials by screws at the front end of the receiving vehicle, and pushing the cylinder forward to the range of a second PP carbon cloth;
step two, preparing the PP carbon cloth layer by a second extruder
a. The second extruder is heated to the temperature for melting PP, extruded into the die through a screw rod and sprayed out together with hot air to a mesh belt of a PP cloth forming machine, and the mesh belt forms a layer of PP cloth in the process of slowly rotating;
b, spreading active carbon particles on the surface of the PP cloth in the process of pulling the PP cloth backwards;
c. drawing a receiving vehicle of the previous machine, winding a plurality of layers of PP cloth scattered with activated carbon particles on the inner PP cotton formed in the step one to form a PP carbon cloth layer of the melt-blown filter element, moving forwards in the winding process, and entering the range of a third machine;
step three, preparing outer PP cotton by a third extruder
Heating the third extruder to the PP melting point temperature, extruding PP particles into a phi 38 micropore die through a screw, spraying the PP particles out of the filament together with hot air, and winding the PP particles on the outer surface of the PP carbon cloth layer formed in the second step to form outer PP cotton;
and step four, selecting the length of the cylindrical melt-blown filter element according to the requirement, and automatically cutting.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A melt-blown filter element is characterized in that: the outer layer of PP cotton, the PP carbon cloth layer and the inner layer of PP cotton are arranged from outside to inside in sequence,
the outer PP cotton layer is formed by PP spinning;
the PP carbon cloth layer is an intermediate layer arranged between the outer layer and the inner layer and is formed by scattering activated carbon fine particles on PP cloth and winding;
the inner PP cotton layer is formed by spinning and winding.
2. The melt blown filter cartridge of claim 1, wherein: the melt-blown filter element is of a hollow cylinder structure.
3. The melt blown filter cartridge of claim 2, wherein: the hollow core of the melt-blown filter element is a through hole with the diameter of 28-32 mm.
4. A meltblown cartridge according to any one of claims 1 to 3, characterised in that: the thickness of the outer PP cotton layer is 5-15mm, the thickness of the PP carbon cloth layer is 15-20mm, and the thickness of the inner PP cotton layer is 12-15 mm.
5. A preparation process of a melt-blown filter element is characterized by comprising the following steps: the method comprises the following steps:
step one, preparing inner PP cotton by a first extruder
a. Heating a first extruder to a PP melting point, melting PP particles into water, extruding the water into a mold with micropores, introducing hot air into the mold, and carrying out melt-blowing on the PP in the mold holes and air flow of the hot air into filaments by extrusion of a screw;
b. b, rotating the PP filaments melt-blown in the step a into a cylinder by using a receiving vehicle to rotate continuously, forming inner PP cotton of the melt-blown filter element, feeding materials by threads at the front end of the receiving vehicle, and pushing the cylinder forward to the range of a second PP carbon cloth;
step two, preparing the PP carbon cloth layer by a second extruder
a. Heating the second extruder to the temperature for melting PP, extruding the PP into a die through a screw, spraying the PP and hot air together, and spraying the PP and hot air onto a mesh belt prepared in advance, wherein the mesh belt forms a layer of PP cloth in the process of slowly rotating;
b, spreading active carbon particles on the surface of the PP cloth in the process of pulling the PP cloth backwards;
c. drawing a receiving vehicle of the previous machine, winding a plurality of layers of PP cloth scattered with activated carbon particles on the inner PP cotton formed in the step one to form a PP carbon cloth layer of the melt-blown filter element, moving forwards in the winding process, and entering the range of a third machine;
step three, preparing outer PP cotton by a third extruder
Heating the third extruder to the PP melting point temperature, extruding PP particles into a die through a screw rod, spraying the PP particles out of the die together with hot air, and winding the PP particles on the outer surface of the PP carbon cloth layer formed in the second step to form outer PP cotton;
and step four, automatic cutting.
6. The process of preparing a meltblown cartridge according to claim 5, wherein: the first step and the third step are provided with micropores with the diameter of phi 0.28 mm-0.45 mm.
7. The process of preparing a meltblown cartridge according to claim 6, wherein: the first step and the third step are provided with micropores with the diameter of 0.38 mm.
8. A process for preparing a meltblown cartridge according to any of claims 5 to 7, wherein: the rotation speed of the receiving vehicle in each step is 50 revolutions per minute.
9. The process of preparing a meltblown cartridge according to claim 5, wherein: the mesh belt is a steel wire mesh, the diameter of the steel wire is less than 0.2mm, and the average mesh aperture is phi 0.2 mm-phi 0.4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310022927.0A CN103084006B (en) | 2013-01-22 | 2013-01-22 | Melt-blown worry core and preparation technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310022927.0A CN103084006B (en) | 2013-01-22 | 2013-01-22 | Melt-blown worry core and preparation technology thereof |
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| Publication Number | Publication Date |
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| CN103084006A true CN103084006A (en) | 2013-05-08 |
| CN103084006B CN103084006B (en) | 2015-09-23 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773854A (en) * | 2015-03-19 | 2015-07-15 | 无锡市宏腾塑胶厂 | Diatomite filter core for water purifier |
| CN105060533A (en) * | 2015-08-13 | 2015-11-18 | 上海伊美特实业有限公司 | Composite filter element for water purification |
| CN106368744A (en) * | 2016-08-31 | 2017-02-01 | 泰豪科技股份有限公司 | Turbine generator and liquid nitrogen transport pipe manufacturing process for turbine generator |
| CN106975363A (en) * | 2017-03-15 | 2017-07-25 | 绿纳科技有限责任公司 | A kind of production method of composite hollow nanofiber filter core |
| CN109374074A (en) * | 2018-10-11 | 2019-02-22 | 上海三盛金属制品有限公司 | A kind of band prefilter function and intellectual water meter APP monitor far distance instrument |
| CN110216419A (en) * | 2019-05-30 | 2019-09-10 | 苏州萌菲过滤技术有限公司 | A kind of processing technology improving filter element filtering performance |
| CN110614032A (en) * | 2019-09-26 | 2019-12-27 | 成都易态科技有限公司 | Preparation method of filter material |
| CN110759508A (en) * | 2019-11-22 | 2020-02-07 | 珠海格力电器股份有限公司 | Cartridge assemblies and ultrafiltration water purifiers |
| CN114180754A (en) * | 2021-12-07 | 2022-03-15 | 佛山市芯耀环保科技有限公司 | Composite filter material film, composite filter element and manufacturing method |
| CN114212903A (en) * | 2021-12-06 | 2022-03-22 | 鄂尔多斯市紫荆低碳生产力促进中心有限公司 | Advanced process for purifying drinking water in rural areas |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104773854A (en) * | 2015-03-19 | 2015-07-15 | 无锡市宏腾塑胶厂 | Diatomite filter core for water purifier |
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| CN109374074A (en) * | 2018-10-11 | 2019-02-22 | 上海三盛金属制品有限公司 | A kind of band prefilter function and intellectual water meter APP monitor far distance instrument |
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| CN110614032A (en) * | 2019-09-26 | 2019-12-27 | 成都易态科技有限公司 | Preparation method of filter material |
| CN110759508A (en) * | 2019-11-22 | 2020-02-07 | 珠海格力电器股份有限公司 | Cartridge assemblies and ultrafiltration water purifiers |
| CN114212903A (en) * | 2021-12-06 | 2022-03-22 | 鄂尔多斯市紫荆低碳生产力促进中心有限公司 | Advanced process for purifying drinking water in rural areas |
| CN114180754A (en) * | 2021-12-07 | 2022-03-15 | 佛山市芯耀环保科技有限公司 | Composite filter material film, composite filter element and manufacturing method |
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| CN103084006B (en) | 2015-09-23 |
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Granted publication date: 20150923 Termination date: 20220122 |