CN110523159A - A kind of filtration system and its filter method of the automatically cleaning dedusting of air column plug - Google Patents
A kind of filtration system and its filter method of the automatically cleaning dedusting of air column plug Download PDFInfo
- Publication number
- CN110523159A CN110523159A CN201910776101.0A CN201910776101A CN110523159A CN 110523159 A CN110523159 A CN 110523159A CN 201910776101 A CN201910776101 A CN 201910776101A CN 110523159 A CN110523159 A CN 110523159A
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- China
- Prior art keywords
- filter
- automatically cleaning
- air
- column plug
- air column
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0001—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
- B01D46/543—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
- B01D46/546—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using nano- or microfibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
- B01D46/64—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series arranged concentrically or coaxially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/72—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with backwash arms, shoes or nozzles
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses the filtration systems and its filter method of a kind of air column plug automatically cleaning dedusting, nanofiber filter membrane is compounded on HEPA strainer particular by electrostatic spinning technique, so that the filtration resistance of composite filter material and filter effect is reached target value by the thickness of the size of control nanofiber, configuration of surface and HEPA strainer.When the filtration resistance of composite filter material drops to setting value, air ram is formed in filter cavity by blowback, when pressure is more than the pressure drop of composite filter material, air penetration composite filter material, the particulate matter of nanofiber filter membrane surface layer and shallow-layer is attached to by the material that blows off, composite filter material restores strainability.The regenerated purpose of automatically cleaning of filtering material can be achieved in the present invention.
Description
Technical field
The present invention relates to the filtration arts of solid particulate materials in gas stream, and in particular to a kind of air column plug from
Clean the filtration system and its filter method of dedusting.
Background technique
HEPA strainer is thinner because technological problems its fibers is difficult to manufacture, and the effect for intercepting particulate matter using filtering is limited,
Electrostatic absorption principle filtration of particulate matters is relied primarily on, electret effect can be with the extension of time or increasing in fast for absorption pollutant
The problem of fast downward trend causes material to lose Electrostatic Absorption efficiency, and electrostatic disappears limits its application space；Simultaneously also by
The limitation of dust containing capacity, after adsorbance reaches certain value, material is blocked, and fluid resistance rises, and is difficult desorption and regeneration；In addition,
To guarantee that interception effect, HEPA strainer need certain thickness, it is larger to also result in its filtration resistance.
Fiber of the diameter less than 1000 nanometers is known as nano-fiber material, which has intercepting efficiency because its aperture is smaller
Feature high, resistance is small.But itself intensity is poor, and other materials is needed to support, and could guarantee its material under certain wind speed
Integrality.
Nano-fiber material and HEPA strainer is compound, it realizes performance complement, not only can guarantee the intensity of material, but also can be improved
Filter efficiency and the service life for increasing material.However, such composite filter material with filtration time extension its cross filtration resistance
Power rises, filter efficiency decline, has no corresponding settling mode in the prior art to guarantee filter efficiency or realize filtering material
Automatically cleaning recycle.
Summary of the invention
The object of the present invention is to provide the filtration system and its filter method of a kind of air column plug automatically cleaning dedusting,
Realize the automatically cleaning of filtering material.It is contained therein by filtration theory it is found that when fluid passes through filtering material with certain speed
Solid particulate matter rests on filtering material surface or inside since the effects of interception, inertia, diffusion, gravity, electrostatic is trapped.
Nanofiber aperture is smaller, can intercept most particulate matters in fiber surface.Since particulate matter does not enter pore interior, because
This can be removed it by the method for blowback, realize the regeneration of material.
To reach above-mentioned purpose, the invention provides the following technical scheme: a kind of filtering of air column plug automatically cleaning dedusting
System, including air column plug back-blowing device and composite filter material, in which: the air column plug back-blowing device includes both ends
Be respectively equipped with the filter cavity of air inlet and air outlet, the filter cavity side is equipped with blowback air inlet, the air outlet and
Check-valves is respectively equipped on blowback air inlet；The composite filter material be set in filter cavity be located at air inlet and blowback into
Position between air port, the composite filter material include HEPA strainer and the nanofiber filter that HEPA screen surface is arranged in
Film, equipped with nanofiber filter membrane one facing towards air inlet.
In above structure, when the filtration resistance of the composite filter material drops to setting value, stop filtering, from described
Blowback air inlet enters air, and the air outlet check-valves can be automatically closed, and prevents air from releasing filter cavity from air outlet.From
The air that the blowback air inlet enters forms air ram in the filter cavity, when pressure is more than that air passes through compound mistake
When the pressure drop of filter material material, air penetration composite filter material is discharged from the air inlet.In the process, it is attached to described receive
The particulate matter of rice fibrous filter membrane surface layer and shallow-layer restores strainability by the material that blows off, composite material.
Preferably, the HEPA strainer uses electret PP cotton, with a thickness of 0.5-5mm；When filtering velocity is 5.3cm/s, mistake
Filtration resistance power is 30-200Pa, and the filter efficiency of PM0.3 is 80-99.9%.
Preferably, the nanofiber filter membrane is using one of PAN, PVDF, PES ultrafiltration membrane, the nanofiber
The fibre diameter of filter membrane is 20-500nm；When filtering velocity is 5.3cm/s, the filter efficiency of filtration resistance 30-150Pa, PM0.3
For 80-99.9%.
Preferably, the nanofiber filter membrane uses the method spinning of electric drawing-off on the surface of HEPA strainer, pass through control
The size and configuration of surface of nanofiber processed make nanofiber filter membrane reach target to the filtration resistance and filter effect of PM0.3
Value.
Preferably, the filtration resistance of the composite filter material is 30-200Pa, PM0.3 when filtering velocity is 5.3cm/s
Filter efficiency be 75-99.9%.
Preferably, the blowback rate is 8-100cm/s.
Preferably, the wind pressure of the blowback is 100-1500Pa.
Preferably, the composite filter material is mounted in filter cavity by filtering material clamping plate.
A kind of filter method of air column plug automatically cleaning dedusting, particular by electric drawing-off spining technology by nanofiber
Filter membrane is compounded on HEPA strainer, is made by the thickness of the size of control nanofiber, configuration of surface and HEPA strainer compound
The filtration resistance and filter effect of material reach target value；When the filtration resistance of composite filter material drops to setting value, lead to
It crosses blowback and forms air ram in filter cavity, when pressure is more than the pressure drop of composite filter material, the compound mistake of air penetration
Filter material material is attached to the particulate matter of nanofiber filter membrane surface layer and shallow-layer by the material that blows off, and composite filter material restored
Filter performance.
Preferably, the technological parameter of the electricity drawing-off spinning are as follows: dissolved with the liquid mixture temperature 30-125 of polymer
DEG C, the mass concentration of polymer is 3-40%, voltage 10-70kV, receives distance 3-30cm, rate of flooding 0.1-10mL/h, ring
15-35 DEG C of border temperature, ambient humidity 5-80%.
The present invention compares with the prior art, the beneficial effect is that: the present invention is by nano-fiber material and HEPA strainer
It combines, by air column plug backflow structure, realizes material automatically cleaning and renewable function.Nano-fiber material is as filtering
The outer layer of material, most particulate matters are filtered by fiber filter disc first in air-flow, are intercepted on the surface layer of filtering material；Remaining
Grain object is retained by the HEPA internal layer of filtering material.It, can be clear by blowback since particulate matter is attached to fiber filter surface
Except the particulate matter on filtering material surface, the regeneration of material is realized, it is reusable.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is the filtration condition schematic diagram of composite filter material in the present invention.
Fig. 3 is the blowback state schematic diagram of composite filter material in the present invention.
In figure: 1, air inlet；2, filter cavity；3, composite filter material, 301, nanofiber filter membrane, 302, HEPA filter
Net；4, filtering material clamping plate；5, blowback air inlet check-valves；6, blowback air inlet；7, air outlet check-valves；8, air outlet.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below by embodiment and in conjunction with attached
Figure, is described in further detail the present invention.
Embodiment 1: a kind of filtration system of air column plug automatically cleaning dedusting, as shown in Figure 1, including that air column plug is anti-
Blowing apparatus and composite filter material, air column plug back-blowing device include the filter chamber that both ends are respectively equipped with air inlet and air outlet
Body, filter cavity side are equipped with blowback air inlet, are equipped with filter material between air inlet and blowback air inlet in filter cavity
Feed collet plate；It is provided with air outlet check-valves on air outlet, blowback air inlet check-valves, combined filtration are provided on blowback air inlet
Material is mounted on filtering material clamping plate.
Composite filter material is made of HEPA strainer and nanofiber filter membrane, using the method for electric drawing-off by Nano grade
Fibrous filter membrane spinning makes composite filter material be equipped with the one of nanofiber filter membrane facing towards air inlet on the surface of HEPA strainer
Mouthful；Make nanofiber filter membrane to the filtration resistance and filter effect of PM0.3 by the size and configuration of surface that control nanofiber
Reach target value.
The technological parameter of above-mentioned electricity drawing-off spinning is as follows: dissolved with 30-125 DEG C of the liquid mixture temperature of polymer, polymerization
The mass concentration of object is 3-40%, voltage 10-70kV, receives distance 3-30cm, rate of flooding 0.1-10mL/h, environment temperature
15-35 DEG C, ambient humidity 5-80%.
In the present embodiment composite filter material, the selection scheme of HEPA strainer and nanofiber filter membrane is as follows:
HEPA strainer uses electret PP cotton, and with a thickness of 1-3mm, under the filtering velocity of 5.3cm/s, electret PP cotton is to PM0.3
Filtration resistance be 80Pa, filter efficiency 95%；
Nanofiber filter membrane is made up using PAN of electric drawing-off spinning, under the filtering velocity of 5.3cm/s, PVDF filter disc pair
The filtration resistance of PM0.3 is 95Pa, filter efficiency 96%；
Under the filtering velocity of 5.3cm/s, using nanofiber filter material and the electret PP cotton composite filter material of different-thickness
Filtration resistance is 110Pa, and the filter efficiency to PM0.3 is 99.9%.
The present embodiment in the specific implementation, as shown in Figure 2,3, when closing blowback air inlet check-valves, is opened air outlet and is stopped
Valve is returned, composite filter material is in filtration condition；When filtration resistance rises to 150Pa, stop filtering, opens blowback air inlet
Check-valves closes air outlet check-valves, carries out blowback to composite filter material with the blowback rate of 8-100cm/s in back blow port,
Air ram is formed in filter cavity, when pressure is more than the pressure drop that air passes through composite filter material, air penetration is compound
Filtering material is discharged from air inlet.In the process, the particulate matter for being attached to nanofiber filter disc surface layer and shallow-layer is blown
From material, composite material restores strainability.
The present embodiment repeats 30 blowback periods through overtesting, and the filter efficiency of composite filter material drops to 98.1%；
100 periods are repeated, filter efficiency drops to 96.5%；1000 periods are repeated, filter efficiency drops to 95%.
Independent HEPA strainer is compared, using common electret PP cotton, with a thickness of 1-3mm, under the filtering velocity of 5.3cm/s,
Electret PP cotton is 80Pa, filter efficiency 95% to the filtration resistance of PM0.3；Repeat 30 blowback periods, composite filter material
Filter efficiency drop to 78.5%；100 periods are repeated, filter efficiency drops to 62.5%；Repeat 1000 periods, filtering
Efficiency drops to 25%.
Embodiment 2: the present embodiment the difference from embodiment 1 is that the selection of HEPA strainer and nanofiber filter membrane is different,
In the present embodiment composite filter material, the selection scheme of HEPA strainer and nanofiber filter membrane is as follows:
HEPA strainer uses electret PP cotton, and with a thickness of 1-3mm, under the filtering velocity of 5.3cm/s, electret PP cotton is to PM0.3
Filtration resistance be 95Pa, filter efficiency 96.5%；
Nanofiber filter membrane is made up using PVDF of electric drawing-off spinning, under the filtering velocity of 5.3cm/s, PVDF filter disc pair
The filtration resistance of PM0.3 is 116Pa, filter efficiency 98%；
The nanofiber filter membrane of different-thickness and the filtration resistance of electret PP cotton composite filter material are 100Pa, to PM0.3
Filter efficiency be 99.9%.
The present embodiment repeats 30 blowback periods through overtesting, and the filter efficiency of composite filter material drops to 98%；Weight
Multiple 100 periods, filter efficiency drop to 96%；1000 periods are repeated, filter efficiency drops to 93%.
In the present embodiment, nanofiber filter membrane and electret HEPA strainer are compared, to the intercepting efficiency of PM0.3 not by environment shadow
It rings, reduces particulate matter and enter in electret PP cotton, realize that self-cleaning efficiency is higher by blowback, therefore repeat 1000 blowbacks
The efficiency that comes after period still keeps efficient.The present embodiment unaccomplished matter is same as Example 1, does not repeat.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of filtration system of air column plug automatically cleaning dedusting characterized by comprising
Air column plug back-blowing device, the air column plug back-blowing device include that both ends are respectively equipped with air inlet and air outlet
Filter cavity, the filter cavity side are equipped with blowback air inlet, are respectively equipped with non-return on the air outlet and blowback air inlet
Valve；
Composite filter material, the composite filter material are set in filter cavity between air inlet and blowback air inlet
Position, the composite filter material include HEPA strainer and the nanofiber filter membrane that HEPA screen surface is arranged in, and are equipped with nanometer
The one of fibrous filter membrane is facing towards air inlet.
2. a kind of filtration system of air column plug automatically cleaning dedusting according to claim 1, which is characterized in that described
HEPA strainer uses electret PP cotton, with a thickness of 0.5-5mm；When filtering velocity is 5.3cm/s, filtration resistance 30-200Pa, PM0.3
Filter efficiency be 80-99.9%.
3. a kind of filtration system of air column plug automatically cleaning dedusting according to claim 1, which is characterized in that described to receive
Rice fibrous filter membrane is 20- using one of PAN, PVDF, PES ultrafiltration membrane, the fibre diameter of the nanofiber filter membrane
500nm；When filtering velocity is 5.3cm/s, the filter efficiency of filtration resistance 30-150Pa, PM0.3 are 80-99.9%.
4. a kind of filtration system of air column plug automatically cleaning dedusting according to claim 1, which is characterized in that described to receive
Rice fibrous filter membrane is using the method spinning of electric drawing-off on the surface of HEPA strainer.
5. a kind of filtration system of air column plug automatically cleaning dedusting according to claim 1, which is characterized in that work as filtering velocity
When for 5.3cm/s, the filtration resistance of the composite filter material is 30-200Pa, and the filter efficiency of PM0.3 is 75-99.9%.
6. a kind of filtration system of air column plug automatically cleaning dedusting according to claim 1, which is characterized in that described anti-
Blowing rate is 8-100cm/s.
7. a kind of filtration system of air column plug automatically cleaning dedusting according to claim 1, which is characterized in that described anti-
The wind pressure blown is 100-1500Pa.
8. a kind of filtration system of air column plug automatically cleaning dedusting according to claim 1, which is characterized in that described multiple
Filtering material is closed to be mounted in filter cavity by filtering material clamping plate.
9. a kind of filter method of air column plug automatically cleaning dedusting, which is characterized in that particular by electric drawing-off spining technology
Nanofiber filter membrane is compounded on HEPA strainer, the size of control nanofiber, configuration of surface and HEPA strainer are passed through
Thickness makes the filtration resistance of composite material and filter effect reach target value；It is set when the filtration resistance of composite filter material drops to
When definite value, air ram is formed in filter cavity by blowback, when pressure is more than the pressure drop of composite filter material, air is worn
Saturating composite filter material is attached to the particulate matter of nanofiber filter membrane surface layer and shallow-layer by the material that blows off, combined filtration material
Material restores strainability.
10. a kind of filter method of air column plug automatically cleaning dedusting according to claim 9, which is characterized in that described
The technological parameter of electric drawing-off spinning are as follows: dissolved with 30-125 DEG C of the liquid mixture temperature of polymer, the mass concentration of polymer is
3-40%, voltage 10-70kV, receive distance 3-30cm, rate of flooding 0.1-10mL/h, 15-35 DEG C of environment temperature, ambient humidity
5-80%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910776101.0A CN110523159A (en) | 2019-08-22 | 2019-08-22 | A kind of filtration system and its filter method of the automatically cleaning dedusting of air column plug |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910776101.0A CN110523159A (en) | 2019-08-22 | 2019-08-22 | A kind of filtration system and its filter method of the automatically cleaning dedusting of air column plug |
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| CN110523159A true CN110523159A (en) | 2019-12-03 |
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| CN201910776101.0A Pending CN110523159A (en) | 2019-08-22 | 2019-08-22 | A kind of filtration system and its filter method of the automatically cleaning dedusting of air column plug |
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Cited By (3)
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| CN111558916A (en) * | 2020-05-22 | 2020-08-21 | 广州秀思诺家具有限公司 | Air compression gun device capable of preventing filter screen from being blocked by blockage during air compression |
| CN115090131A (en) * | 2022-07-21 | 2022-09-23 | 魏延生 | Composite membrane with micro-nano structure, preparation method and application thereof |
| KR20230038843A (en) * | 2021-09-13 | 2023-03-21 | 성균관대학교산학협력단 | Nanofiber membrane, method of manufacturing the same, and filter |
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Application publication date: 20191203 |