CN114588728B - Degerming HEPA composite activated carbon filter and preparation method thereof - Google Patents
Degerming HEPA composite activated carbon filter and preparation method thereof Download PDFInfo
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- CN114588728B CN114588728B CN202210186777.6A CN202210186777A CN114588728B CN 114588728 B CN114588728 B CN 114588728B CN 202210186777 A CN202210186777 A CN 202210186777A CN 114588728 B CN114588728 B CN 114588728B
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 246
- 239000002131 composite material Substances 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 93
- 239000002245 particle Substances 0.000 claims abstract description 68
- 239000000428 dust Substances 0.000 claims abstract description 45
- 239000008187 granular material Substances 0.000 claims abstract description 30
- 238000005660 chlorination reaction Methods 0.000 claims abstract description 4
- 230000000844 anti-bacterial effect Effects 0.000 claims description 37
- 229920003023 plastic Polymers 0.000 claims description 19
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 17
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 17
- 239000000243 solution Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 16
- 239000012153 distilled water Substances 0.000 claims description 15
- 239000012717 electrostatic precipitator Substances 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 9
- 239000011837 N,N-methylenebisacrylamide Substances 0.000 claims description 8
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 8
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract description 10
- 239000000460 chlorine Substances 0.000 abstract description 10
- 229910052801 chlorine Inorganic materials 0.000 abstract description 10
- 238000009423 ventilation Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 230000003647 oxidation Effects 0.000 abstract description 8
- 238000007254 oxidation reaction Methods 0.000 abstract description 8
- -1 HEPA compound Chemical class 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 4
- 238000003860 storage Methods 0.000 abstract description 4
- 230000001580 bacterial effect Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000011109 contamination Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 125000000524 functional group Chemical group 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 241000588724 Escherichia coli Species 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 230000001954 sterilising effect Effects 0.000 description 4
- 238000004659 sterilization and disinfection Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 241000191967 Staphylococcus aureus Species 0.000 description 3
- 238000004887 air purification Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 229920001817 Agar Polymers 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 2
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 2
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 2
- 239000008272 agar Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910001431 copper ion Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000003905 indoor air pollution Methods 0.000 description 2
- 239000002609 medium Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- FFRBMBIXVSCUFS-UHFFFAOYSA-N 2,4-dinitro-1-naphthol Chemical compound C1=CC=C2C(O)=C([N+]([O-])=O)C=C([N+]([O-])=O)C2=C1 FFRBMBIXVSCUFS-UHFFFAOYSA-N 0.000 description 1
- 241000192125 Firmicutes Species 0.000 description 1
- 235000009754 Vitis X bourquina Nutrition 0.000 description 1
- 235000012333 Vitis X labruscana Nutrition 0.000 description 1
- 240000006365 Vitis vinifera Species 0.000 description 1
- 235000014787 Vitis vinifera Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000001963 growth medium Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
- F24F8/158—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using active carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/91—Bacteria; Microorganisms
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Filtering Materials (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The utility model provides a degerming HEPA compound active carbon filter and a preparation method thereof, wherein the degerming HEPA compound active carbon filter comprises a filter shell, a HEPA filter screen, an electrostatic dust collection device and an active carbon filter screen; the filter housing is of a box structure, the HEPA filter screen, the electrostatic dust collection device and the activated carbon filter screen are sequentially arranged inside the filter housing in an inserted mode from front to back, an air inlet and an air outlet are respectively formed in the front end face and the rear end face of the filter housing, the air inlet is located in front of the HEPA filter screen, and the air outlet is located behind the activated carbon filter screen. The degerming HEPA composite active carbon filter and the preparation method thereof are applied to air conditioners and ventilation systems, have reasonable structural design, are convenient to replace and clean, and enable the active carbon filter screen to have high oxidation state chlorine content through grafting or chlorination treatment of active carbon particles or granules, and have good storage stability, good degerming effect, low cost and wide application prospect.
Description
Technical Field
The invention belongs to the technical field of air purification, and particularly relates to a degerming HEPA (high efficiency particulate air) composite activated carbon filter and a preparation method thereof.
Background
In recent years, "indoor air pollution" is one of the topics of increasing attention. "indoor air pollution" is largely classified into the following three categories according to the nature of the pollutant itself: chemical contamination, biological contamination and physical contamination: 1. chemical pollution: mainly comprises NOX, SOX and VOC, namely volatile organic compounds; 2. biological contamination: biological contamination is typically caused by a large class of reactive organics that are invisible to the naked eye and that are airborne; 3. physical contamination: mainly refer to dust particles suspended in air, such as PM 10 、PM 2.5 Etc
In particular, since most buildings use closed construction and finishing materials and a large amount of air conditioners, serious pollution of indoor air is caused. Therefore, in order to achieve better room temperature control and room air purification in an air conditioner and a ventilation system, an air purification device is required to be provided in the air conditioner and the ventilation system. At present, the filter applied to the air conditioner and the ventilation system usually adopts a physical filtering mode, namely a plurality of filter screens are installed, and in use, as air possibly contains impurities such as fibers, particulate pollutants, dust and the like, the resistance of the filter screen of the filter is increased quickly, and the wind loss is high.
In addition, in order to enhance the sterilization performance of the activated carbon material used in the activated carbon filter, metal ions such as silver ions, zinc ions, copper ions and the like are mainly immobilized, and the activated carbon material has the main defects that the raw materials are relatively expensive, and the antibacterial long-acting performance of the activated carbon material in practical application is poor due to the slow release of the metal ions.
Therefore, the invention develops a degerming HEPA composite active carbon filter and a preparation method thereof, so as to solve the technical problems.
Chinese patent application number CN201821006802.3 discloses an activated carbon filter with a filter screen convenient to replace, which only solves the problem of filter screen replacement, and does not further improve the antibacterial property, antibacterial long-acting property and the like of the activated carbon material used in the activated carbon filter.
Disclosure of Invention
The invention aims to: in order to overcome the defects, the invention aims to provide the degerming HEPA composite active carbon filter and the preparation method thereof, which are applied to air conditioners and ventilation systems, have reasonable structural design and are convenient to replace and clean, and the active carbon filter screen has higher content of oxidized chlorine through grafting or chloridizing active carbon particles, good storage stability, good degerming effect, low cost and wide application prospect.
The invention aims at realizing the following technical scheme:
a degerming HEPA composite active carbon filter, which comprises a filter shell, a HEPA filter screen, an electrostatic dust collection device and an active carbon filter screen; the filter shell is of a box structure, the HEPA filter screen, the electrostatic dust collection device and the activated carbon filter screen are sequentially inserted into the filter shell from front to back, the front end face and the rear end face of the filter shell are respectively provided with an air inlet and an air outlet, the air inlet is positioned in front of the HEPA filter screen, and the air outlet is positioned behind the activated carbon filter screen;
the active carbon filter screen comprises a metal honeycomb carrier, a plastic honeycomb carrier and an outer frame, wherein a plurality of first honeycomb grids are arranged on the metal honeycomb carrier, a plurality of second honeycomb grids are arranged on the plastic honeycomb carrier, modified antibacterial active carbon particles are adhered to the surface of the first honeycomb grids, modified antibacterial active carbon particles are adhered to the surface of the second honeycomb grids, one surface of the plastic honeycomb carrier is tightly attached to one surface of the plastic honeycomb carrier, and the outer periphery of the plastic honeycomb carrier is fixed through the outer frame;
the modified antibacterial active carbon particles are obtained by crushing active carbon to an average particle size of 0.3-0.5mm, then grafting and chloridizing, and the modified antibacterial active carbon particles are obtained by crushing active carbon to an average particle size of 2-3mm, then grafting and chloridizing;
the modified antibacterial activated carbon powder particles or modified antibacterial activated carbon particles comprise the following components in parts by mass: 50-60 parts of active carbon, 20-25 parts of sodium carbonate, 3-5 parts of N, N-methylene bisacrylamide and 0.5-1 part of polyvinyl alcohol.
The invention relates to a degerming HEPA composite active carbon filter which is applied to an air conditioner and a ventilation system, the structural design is reasonable, air of the air conditioner and the ventilation system enters the filter shell from an air inlet, passes through a HEPA filter screen, the HEPA filter screen can select E10, E11, E12, H13 and the like, fibers and larger particle pollutants are filtered firstly, the air after the primary filtration of the HEPA filter screen passes through an electrostatic dust collection device, the air is ionized, dust particles are charged in the process, the charged dust particles are adsorbed, and then pass through the active carbon filter screen, so that peculiar smell, malodor and harmful gases in the air are removed, and sterilization is performed, and finally the air is discharged from an air outlet.
The modified antibacterial activated carbon particles or granules are adhered to the first honeycomb grid and the second honeycomb grid in a carbon adhering mode adopted in the prior art. The modified antibacterial activated carbon particles or granules are prepared by using the advantages of regular pore size distribution, large specific surface area, abundant surface functional groups and good physical and chemical stability of the activated carbon particles or granules, using sodium carbonate as a catalyst, using the activated carbon particles or granules as a carrier, and performing grafting reaction on active hydroxyl groups on a polyvinyl alcohol molecular chain and alpha, beta-unsaturated functional groups of N, N-methylene bisacrylamide, so that the modified antibacterial activated carbon particles or granules have higher oxidation state chlorine content and good sterilization effect.
Further, the above-mentioned but degerming HEPA combined type active carbon filter the filter housing top surface has seted up HEPA filter screen slot, electrostatic precipitator device slot, active carbon filter screen slot in proper order in the past to the back, HEPA filter screen, electrostatic precipitator device, active carbon filter screen insert to the filter housing inside through HEPA filter screen slot, electrostatic precipitator device slot, active carbon filter screen slot respectively.
Further, the degerming HEPA composite active carbon filter further comprises 3 sliding rail assemblies; every slide rail subassembly all includes mutually supporting fixed rail, moves the rail, every slide rail subassembly's fixed setting is on filter housing left and right side inner wall, every slide rail subassembly move the rail and fix respectively set up on HEPA filter screen, electrostatic precipitator device, the left and right sides outer wall of active carbon filter screen, HEPA filter screen, electrostatic precipitator device, active carbon filter screen set up inside the filter housing through its corresponding slide rail subassembly respectively and HEPA filter screen, electrostatic precipitator device, active carbon filter screen top surface is provided with the fixture block of cooperation HEPA filter screen slot, electrostatic precipitator device slot, active carbon filter screen slot respectively.
According to the HEPA filter, the electrostatic dust collection device and the activated carbon filter, the HEPA filter, the electrostatic dust collection device and the activated carbon filter are arranged in the filter shell in an inserting mode, and the HEPA filter slot, the electrostatic dust collection device slot, the activated carbon filter slot, the sliding rail component and the clamping block are matched, so that the HEPA filter, the electrostatic dust collection device and the activated carbon filter can be conveniently and stably fixed and quickly taken out in the filter shell, and can be regularly cleaned and replaced, and the problems of high resistance, high wind loss and reduced filtering effect of the activated carbon filter caused by excessive self impurity adsorption due to long-time use of the HEPA filter, the electrostatic dust collection device and the activated carbon filter are avoided.
Furthermore, in the above-mentioned degerming HEPA composite active carbon filter, the shapes of the first and second honeycomb grids are regular hexagons, and the diameter of the circumcircle of the first honeycomb grid is far smaller than that of the second honeycomb grid.
The active carbon filter screen is characterized in that a metal honeycomb carrier and a plastic honeycomb carrier are combined and fixed in an outer frame, the shapes of a first honeycomb grid and a second honeycomb grid are regular hexagons, the diameter of a circumcircle of the first honeycomb grid is far smaller than that of the second honeycomb grid, and because metal is easy to process and form, a dense and thin first honeycomb grid can be manufactured on the metal honeycomb carrier, and modified antibacterial active carbon particles are adhered on the metal honeycomb carrier, so that the contact area of active carbon can be greatly expanded, and meanwhile, the air resistance is reduced; the plastic honeycomb carrier has light weight, the diameter of the circumcircle of the first honeycomb grid is far smaller than that of the second honeycomb grid, and the modified antibacterial active carbon particles with larger volume can be adhered, so that the accumulated purifying amount of gas is improved by increasing the total carbon filling amount.
Further, the degerming HEPA composite active carbon filter is characterized in that a first limiting piece, a second limiting piece and a third limiting piece are fixedly arranged on the inner bottom surface of the filter shell at positions corresponding to the HEPA filter screen slot, the electrostatic dust collection device slot and the active carbon filter screen slot respectively.
Furthermore, the active carbon filter with good low wind resistance filtering effect is characterized in that the first limiting piece, the second limiting piece and the third limiting piece are composed of a plurality of limiting clamping blocks and buffer springs; the limiting blocks of the limiting piece I are fixedly arranged at equal intervals on the inner bottom surface of the filter shell at positions corresponding to the HEPA filter screen slots, limiting grooves matched with the HEPA filter screen are formed in the tops of the limiting blocks of the limiting piece I, and buffer springs are fixedly arranged in each limiting groove; the limiting blocks of the limiting piece II are fixedly arranged at equal intervals on the inner bottom surface of the filter shell at positions corresponding to the slots of the electrostatic dust collection device, limiting grooves matched with the electrostatic dust collection device are formed in the tops of the limiting blocks of the limiting piece II, and a buffer spring is fixedly arranged in each limiting groove; the three limiting blocks of the limiting piece are fixedly arranged at equal distances on the position, corresponding to the active carbon filter screen slot, of the inner bottom surface of the filter shell, limiting grooves matched with the active carbon filter screen are formed in the tops of the three limiting blocks of the limiting piece, and buffer springs are fixedly arranged in each limiting groove.
Through setting up locating part one, locating part two, locating part three, through the cooperation of spacing fixture block and buffer spring, improve HEPA filter screen, electrostatic precipitator device, active carbon filter screen installation stability in the filter casing.
The invention also relates to a preparation method of the degerming HEPA composite activated carbon filter, and the preparation of the modified antibacterial activated carbon powder particles or granules comprises the following steps:
(1) Grafting: the polyvinyl alcohol is fully dissolved in distilled water in a heating and stirring mode, and the mass ratio of the polyvinyl alcohol to the distilled water is 1:5000, so that a polyvinyl alcohol aqueous solution is prepared; adding activated carbon particles or granules, sodium carbonate and N, N-methylene bisacrylamide into a polyvinyl alcohol aqueous solution, reacting for 20-24 hours by controlling the temperature at 75 ℃ and stirring, filtering, washing for multiple times by distilled water, and drying to obtain grafted activated carbon particles or granules;
(2) Chlorination: adding the grafted activated carbon particles or granules into distilled water, slowly dropwise adding 10% sodium hypochlorite solution, dropwise adding 10mL10% sodium hypochlorite solution into each 1g of grafted activated carbon particles or granules, regulating the solution by dilute sulfuric acid to keep the pH at about 7, reacting for 3-5h by controlling the temperature at 30 ℃ and stirring, filtering, washing with distilled water for multiple times, and drying to obtain the modified antibacterial activated carbon particles or granules.
Compared with the prior art, the invention has the following beneficial effects:
(1) The invention discloses a degerming HEPA composite active carbon filter, which is applied to an air conditioner and a ventilation system, and has reasonable structural design, wherein air of the air conditioner and the ventilation system enters the filter shell from an air inlet, passes through a HEPA filter screen, filters fiber and larger particle pollutants firstly, passes through the air after the primary filtration of the HEPA filter screen, and then passes through an electrostatic dust collection device to ionize the air, dust particles are charged in the process, the charged dust particles are adsorbed, and then pass through the active carbon filter screen to remove peculiar smell, malodor and harmful gases in the air and degerming, and finally is discharged from an air outlet;
(2) According to the degerming HEPA composite active carbon filter disclosed by the invention, the HEPA filter screen, the electrostatic dust collection device and the active carbon filter screen are arranged in the filter shell in an inserting mode, and the HEPA filter screen slot, the electrostatic dust collection device slot, the active carbon filter screen slot, the sliding rail component and the clamping block are matched, so that the degerming HEPA composite active carbon filter is convenient to stably fix and rapidly take out in the filter shell, and the HEPA filter screen, the electrostatic dust collection device and the active carbon filter screen can be regularly cleaned and replaced, so that the problems of high resistance, high wind loss and reduced filtering effect of the active carbon filter caused by excessive self impurity adsorption due to long-time use of the HEPA filter screen, the electrostatic dust collection device and the active carbon filter screen are avoided;
(3) The invention discloses a degerming HEPA composite active carbon filter, which is characterized in that modified antibacterial active carbon particles or granules are adhered to a first honeycomb grid and a second honeycomb grid. The modified antibacterial activated carbon particles or granules take advantage of the advantages of regular pore size distribution, large specific surface area, abundant surface functional groups and good physical and chemical stability of the activated carbon particles or granules, sodium carbonate is taken as a catalyst, the activated carbon particles or granules are taken as a carrier, and active hydroxyl groups on a polyvinyl alcohol molecular chain and alpha, beta-unsaturated functional groups of N, N-methylene bisacrylamide are subjected to grafting reaction, so that the modified antibacterial activated carbon particles or granules obtain higher oxidation state chlorine content and have good sterilization effect;
(4) The preparation method of the degerming HEPA composite active carbon filter disclosed by the invention has reasonable preparation steps, and has lower cost and wider application prospect than the prior art that silver ions, zinc ions, copper ions and the like are loaded on active carbon.
Drawings
FIG. 1 is a schematic view of the appearance of a composite type filter of the present invention;
FIG. 2 is a front view of a composite HEPA filter according to the invention;
FIG. 3 is a rear view of the present invention of a sterilized HEPA composite activated carbon filter;
FIG. 4 is an internal schematic view of a composite HEPA filter according to the invention;
FIG. 5 is a front view of an activated carbon screen (without plastic honeycomb carrier) of a degerming HEPA composite activated carbon filter according to the present invention;
FIG. 6 is a rear view of an activated carbon screen (without a metal honeycomb carrier) of a degerming HEPA composite activated carbon filter according to the present invention;
fig. 7 is a schematic structural diagram (1 fixed rail and 1 movable rail) of the sliding rail of the degerming HEPA composite activated carbon filter of the present invention when not installed;
in the figure: the filter comprises a filter shell 1, a HEPA filter screen slot 11, an electrostatic dust collection device slot 12, an active carbon filter screen slot 13, an air inlet 14, an air outlet 15, a first limiting piece 16, a limiting clamping block 161, a buffer spring 162, a second limiting piece 17 and a third limiting piece 18. HEPA filter 2, fixture block 21, electrostatic dust collector 3, active carbon filter 4, metal honeycomb carrier 41, honeycomb mesh one 411, plastic honeycomb carrier 42, honeycomb mesh two 421, outer frame 43, slide rail assembly 5, fixed rail 51, moving rail 52.
Detailed Description
The following examples are given to clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with specific experimental data, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
The following examples 1, 2 provide the structure of a degerming HEPA composite activated carbon filter and a method for preparing modified antibacterial activated carbon particles or granules.
Example 1
The degerming HEPA composite active carbon filter comprises a filter shell 1, a HEPA filter screen 2, an electrostatic dust collection device 3, an active carbon filter screen 4 and 3 sliding rail assemblies 5; the filter housing 1 is of a box structure, a HEPA filter screen slot 11, an electrostatic dust collection device slot 12 and an active carbon filter screen slot 13 are sequentially formed in the top surface of the filter housing 1 from front to back, the HEPA filter screen 2, the electrostatic dust collection device 3 and the active carbon filter screen 4 are respectively inserted into the filter housing 1 through the HEPA filter screen slot 11, the electrostatic dust collection device slot 12 and the active carbon filter screen slot 13, an air inlet 14 and an air outlet 15 are respectively formed in the front end surface and the rear end surface of the filter housing 1, the air inlet 14 is positioned in front of the HEPA filter screen 2, and the air outlet 15 is positioned behind the active carbon filter screen 4; each sliding rail component 5 comprises a fixed rail 51 and a movable rail 52 which are matched with each other, the fixed rail 51 of each sliding rail component 5 is fixedly arranged on the left inner wall and the right inner wall of the filter shell 1, the movable rail 52 of each sliding rail component 5 is respectively fixedly arranged on the left outer wall and the right outer wall of the HEPA filter screen 2, the electrostatic dust collection device 3 and the active carbon filter screen 4, the HEPA filter screen 2, the electrostatic dust collection device 3 and the active carbon filter screen 4 are respectively arranged in the filter shell 1 through the corresponding sliding rail components 5, and the top surfaces of the HEPA filter screen 2, the electrostatic dust collection device 3 and the active carbon filter screen 4 are respectively provided with a clamping block 21 matched with the HEPA filter screen slot 11, the electrostatic dust collection device slot 12 and the active carbon filter screen slot 13; the activated carbon filter screen 4 comprises a metal honeycomb carrier 41, a plastic honeycomb carrier 42 and an outer frame 43, wherein a plurality of first honeycomb grids 411 are arranged on the metal honeycomb carrier, a plurality of second honeycomb grids 421 are arranged on the plastic honeycomb carrier 42, activated carbon powder particles are adhered to the surface of the first honeycomb grids 411, activated carbon particles are adhered to the surface of the second honeycomb grids 421, one surface of the plastic honeycomb carrier 42 is tightly adhered to one surface of the plastic honeycomb carrier 42, and the periphery of the plastic honeycomb carrier is fixed through the outer frame 43. The modified antibacterial active carbon particles are obtained by crushing active carbon to an average particle size of 0.3-0.5mm, grafting and chloridizing, and the modified antibacterial active carbon particles are obtained by crushing active carbon to an average particle size of 2-3mm, grafting and chloridizing.
The shapes of the first and second honeycomb grids 411 and 421 are regular hexagons, and the diameter of the circumcircle of the first honeycomb grid 411 is far smaller than that of the second honeycomb grid 421.
Further, the first limiting piece 16, the second limiting piece 17 and the third limiting piece 18 are respectively and fixedly arranged on the inner bottom surface of the filter shell 1 at positions corresponding to the HEPA filter screen slot 11, the electrostatic dust collection device slot 12 and the active carbon filter screen slot 13.
Further, the first limiting piece 16, the second limiting piece 17 and the third limiting piece 18 are composed of a limiting clamping block 161 and a buffer spring 162, and the number of the limiting clamping blocks 161 is several; the limiting blocks 161 of the limiting part 16 are fixedly arranged at equal intervals on the inner bottom surface of the filter shell 1 at positions corresponding to the HEPA filter screen slots 11, limiting grooves matched with the HEPA filter screen 2 are formed in the tops of the limiting blocks 161 of the limiting part 16, and a buffer spring 162 is fixedly arranged in each limiting groove; the limiting blocks 161 of the second limiting part 17 are fixedly arranged at equal distances on the inner bottom surface of the filter shell 1 corresponding to the position of the electrostatic dust collection device slot 12, limiting grooves matched with the electrostatic dust collection device 3 are formed in the tops of the limiting blocks 161 of the second limiting part 17, and a buffer spring 162 is fixedly arranged in each limiting groove; the limiting blocks 161 of the limiting part III 18 are fixedly arranged at equal distances on the inner bottom surface of the filter shell 1 corresponding to the active carbon filter screen slot 13, limiting grooves matched with the active carbon filter screen 4 are formed in the tops of the limiting blocks 161 of the limiting part III 18, and buffer springs 162 are fixedly arranged in each limiting groove.
Example 2
The preparation method of the modified antibacterial activated carbon powder particles or granules comprises the following steps:
(3) Grafting: the polyvinyl alcohol is fully dissolved in distilled water in a heating and stirring mode, and the mass ratio of the polyvinyl alcohol to the distilled water is 1:5000, so that a polyvinyl alcohol aqueous solution is prepared; adding activated carbon particles or granules, sodium carbonate and N, N-methylene bisacrylamide into a polyvinyl alcohol aqueous solution, reacting for 24 hours by controlling the temperature at 75 ℃ and stirring, filtering, washing for multiple times by distilled water, and drying to obtain grafted activated carbon particles or granules;
(4) Chlorination: adding the grafted activated carbon particles or granules into distilled water, slowly dropwise adding 10% sodium hypochlorite solution, dropwise adding 10mL10% sodium hypochlorite solution into each 1g of grafted activated carbon particles or granules, regulating the solution by dilute sulfuric acid to keep the pH at about 7, reacting for 4 hours by controlling the temperature at 30 ℃ and stirring, filtering, washing with distilled water for multiple times, and drying to obtain the modified antibacterial activated carbon particles or granules.
Wherein, the modified antibacterial activated carbon powder particles or modified antibacterial activated carbon particles comprise the following components in parts by mass: 55 parts of active carbon, 23 parts of sodium carbonate, 5 parts of N, N-methylene bisacrylamide and 1 part of polyvinyl alcohol.
And (3) effect verification:
the modified antibacterial activated carbon particles (sample 1) or activated carbon particles (sample 2) from example 1 above were subjected to performance tests according to the following test methods.
1. And (3) measuring the content of oxidation state chlorine: the oxidized chlorine content of sample 1 and sample 2 was measured by the iodometry method.
2. Storage stability performance: sample 1 and sample 2 are taken and stored under the condition of normal temperature and light shielding, sampling is carried out at 1, 3, 7, 14, 21, 28 and 35 days respectively, the oxidation state chlorine content is measured according to the method for measuring the oxidation state chlorine content, and the storage stability of the haloamine functional group of the material is judged according to the change degree of the oxidation state chlorine content.
The results of the above test are shown in Table 1.
3. Degerming performance: the degerming properties of sample 1, sample 2, comparative example 1, comparative example 2 were examined by taking untreated activated carbon particles as comparative example 1 and untreated activated carbon particles as comparative example 2, and selecting staphylococcus aureus and escherichia coli as representatives of gram-positive bacteria and gram-negative bacteria, respectively.
The specific test steps are as follows: the concentration of the cultured bacteria was 10 7 -10 8 Is of the golden yellow grape varietyPreparing bacterial solutions of cocci and escherichia coli, preparing a flat culture medium, respectively taking 1g of sample 1, sample 2, comparative example 1 and comparative example 2, respectively placing the bacterial solutions in 100ml of deionized water, adding 1ml of staphylococcus aureus or escherichia coli bacterial solutions, placing the bacterial solutions in a constant-temperature oscillating water tank at 37 ℃, respectively taking 1ml of upper layer solutions at 1, 5, 10 and 30min, firstly adding 4.5ml of 0.1000mol/L sodium thiosulfate solution to quench residual oxidation state chlorine in the bacterial solutions, and then diluting the quenched bacterial solutions by a certain multiple. Finally, 100. Mu.L of the diluted bacterial liquid was spread on an agar plate of a plate medium, and the plate medium was placed in a constant temperature incubator (37 ℃) for 24 hours, and then the number of colonies on the agar plate was counted. The results of the above tests are shown in tables 2 and 3.
TABLE 1 Performance test results
TABLE 2 antibacterial efficacy test results of Staphylococcus aureus
TABLE 3 antibacterial efficacy test results of E.coli
The invention has many specific application routes, and the above description is only a preferred embodiment of the invention. It should be noted that the above examples are only for illustrating the present invention and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that modifications may be made without departing from the principles of the invention, and such modifications are intended to be within the scope of the invention.
Claims (6)
1. The degerming HEPA composite active carbon filter is characterized by comprising a filter shell (1), a HEPA filter screen (2), an electrostatic dust collection device (3) and an active carbon filter screen (4); the filter housing (1) is of a box structure, the HEPA filter screen (2), the electrostatic dust collection device (3) and the activated carbon filter screen (4) are sequentially arranged inside the filter housing (1) in an inserted mode from front to back, an air inlet (14) and an air outlet (15) are respectively formed in the front end face and the rear end face of the filter housing (1), the air inlet (14) is positioned in front of the HEPA filter screen (2), and the air outlet (15) is positioned behind the activated carbon filter screen (4);
the activated carbon filter screen (4) comprises a metal honeycomb carrier (41), a plastic honeycomb carrier (42) and an outer frame (43), wherein a plurality of honeycomb grids I (411) are arranged on the metal honeycomb carrier (41), a plurality of honeycomb grids II (421) are arranged on the plastic honeycomb carrier (42), modified antibacterial activated carbon particles are adhered to the surface of the honeycomb grids I (411), modified antibacterial activated carbon particles are adhered to the surface of the honeycomb grids II (421), one surface of the plastic honeycomb carrier (42) is tightly adhered to one surface of the plastic honeycomb carrier (42), and the periphery of the plastic honeycomb carrier is fixed through the outer frame (43);
the modified antibacterial active carbon particles are obtained by crushing active carbon to an average particle size of 0.3-0.5mm, then grafting and chloridizing, and the modified antibacterial active carbon particles are obtained by crushing active carbon to an average particle size of 2-3mm, then grafting and chloridizing;
the modified antibacterial activated carbon powder particles or modified antibacterial activated carbon particles comprise the following components in parts by mass: 50-60 parts of active carbon, 20-25 parts of sodium carbonate, 3-5 parts of N, N-methylene bisacrylamide and 0.5-1 part of polyvinyl alcohol;
the preparation of the modified antibacterial activated carbon powder particles or granules comprises the following steps:
(1) Grafting: the polyvinyl alcohol is fully dissolved in distilled water in a heating and stirring mode, and the mass ratio of the polyvinyl alcohol to the distilled water is 1:5000, so that a polyvinyl alcohol aqueous solution is prepared; adding activated carbon particles or granules, sodium carbonate and N, N-methylene bisacrylamide into a polyvinyl alcohol aqueous solution, reacting for 20-24 hours by controlling the temperature at 75 ℃ and stirring, filtering, washing for multiple times by distilled water, and drying to obtain grafted activated carbon particles or granules;
(2) Chlorination: adding the grafted activated carbon particles or granules into distilled water, slowly dropwise adding 10% sodium hypochlorite solution, dropwise adding 10mL10% sodium hypochlorite solution into each 1g of grafted activated carbon particles or granules, regulating the pH to be 7 by using dilute sulfuric acid, reacting 3-5h by controlling the temperature to be 30 ℃ and stirring, filtering, washing with distilled water for multiple times, and drying to obtain the modified antibacterial activated carbon particles or granules.
2. The degerming HEPA composite activated carbon filter according to claim 1, wherein HEPA filter screen slots (11), electrostatic dust collection device slots (12) and activated carbon filter screen slots (13) are sequentially formed in the top surface of the filter shell (1) from front to back, and the HEPA filter screen (2), the electrostatic dust collection device (3) and the activated carbon filter screen (4) are inserted into the filter shell (1) through the HEPA filter screen slots (11), the electrostatic dust collection device slots (12) and the activated carbon filter screen slots (13) respectively.
3. The sterilizable HEPA composite activated carbon filter of claim 2, further comprising 3 slide rail assemblies (5); every slide rail subassembly (5) all include mutually supporting fixed rail (51), move rail (52), every slide rail subassembly (5) fixed setting is on filter housing (1) left and right side inner wall, every slide rail subassembly (5) move rail (52) and fix respectively and set up on HEPA filter screen (2), electrostatic precipitator device (3), the left and right sides outer wall of active carbon filter screen (4), HEPA filter screen (2), electrostatic precipitator device (3), active carbon filter screen (4) set up inside filter housing (1) and HEPA filter screen (2), electrostatic precipitator device (3), active carbon filter screen (4) top surface are provided with fixture block (21) of cooperation HEPA filter screen slot (11), electrostatic precipitator device slot (12), active carbon filter screen slot (13) respectively through its slide rail subassembly (5) that corresponds.
4. The sterilizable HEPA composite activated carbon filter of claim 1, wherein the shape of the first (411) and second (421) honeycomb meshes are regular hexagons.
5. The degerming HEPA composite active carbon filter according to claim 3, wherein the inner bottom surface of the filter shell (1) is fixedly provided with a first limiting piece (16), a second limiting piece (17) and a third limiting piece (18) corresponding to the HEPA filter screen slot (11), the electrostatic dust collection device slot (12) and the active carbon filter screen slot (13) respectively.
6. The degerming HEPA composite active carbon filter according to claim 5, wherein the first limiting piece (16), the second limiting piece (17) and the third limiting piece (18) are composed of a plurality of limiting clamping blocks (161) and buffer springs (162); a plurality of limiting clamping blocks (161) of the first limiting part (16) are fixedly arranged at equal intervals on the inner bottom surface of the filter shell (1) at positions corresponding to the HEPA filter screen slots (11), limiting grooves matched with the HEPA filter screen (2) are formed in the tops of the limiting clamping blocks (161) of the first limiting part (16), and a buffer spring (162) is fixedly arranged in each limiting groove; a plurality of limiting clamping blocks (161) of the limiting part II (17) are fixedly arranged at equal intervals on the inner bottom surface of the filter shell (1) corresponding to the position of the electrostatic dust collection device slot (12), limiting grooves matched with the electrostatic dust collection device (3) are formed in the tops of the limiting clamping blocks (161) of the limiting part II (17), and a buffer spring (162) is fixedly arranged in each limiting groove; the device is characterized in that a plurality of limiting clamping blocks (161) of a limiting part III (18) are fixedly arranged at equal distances on the inner bottom surface of the filter shell (1) corresponding to the positions of the active carbon filter screen slots (13), limiting grooves matched with the active carbon filter screens (4) are formed in the tops of the limiting clamping blocks (161) of the limiting part III (18), and buffer springs (162) are fixedly arranged in each limiting groove.
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| CN110860180A (en) * | 2018-08-27 | 2020-03-06 | 苏州三星电子有限公司 | Activated carbon filter screen, manufacturing process thereof, air purifier and application thereof |
| CN112808237A (en) * | 2020-12-31 | 2021-05-18 | 桐乡市健民过滤材料有限公司 | Modified activated carbon fiber felt and filter screen for removing formaldehyde and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107362697A (en) * | 2017-07-31 | 2017-11-21 | 常州杰轩纺织科技有限公司 | A kind of preparation method of air-filtering membrane |
| CN110860180A (en) * | 2018-08-27 | 2020-03-06 | 苏州三星电子有限公司 | Activated carbon filter screen, manufacturing process thereof, air purifier and application thereof |
| CN209229907U (en) * | 2018-12-21 | 2019-08-09 | 南京德风环保科技有限公司 | A kind of air cleaning facility |
| CN112808237A (en) * | 2020-12-31 | 2021-05-18 | 桐乡市健民过滤材料有限公司 | Modified activated carbon fiber felt and filter screen for removing formaldehyde and preparation method thereof |
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