CN110860181A - Filter screen for removing formaldehyde and preparation method thereof - Google Patents
Filter screen for removing formaldehyde and preparation method thereof Download PDFInfo
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- CN110860181A CN110860181A CN201810990918.3A CN201810990918A CN110860181A CN 110860181 A CN110860181 A CN 110860181A CN 201810990918 A CN201810990918 A CN 201810990918A CN 110860181 A CN110860181 A CN 110860181A
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- 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
- B01D53/04—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 with stationary adsorbents
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
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Abstract
The invention relates to a filter screen for removing formaldehyde, which comprises a honeycomb carrier, wherein honeycomb holes penetrating through the honeycomb carrier are formed in the honeycomb carrier, and powder-shaped or powdery active carbon is arranged on the inner wall of each honeycomb hole. The active carbon is arranged on the inner wall of the honeycomb hole, namely the active carbon is arranged on the air duct, and meanwhile, the active carbon is in a powder particle shape or a powder shape, compared with a particle-shaped object, when the active carbon is adhered on the inner wall of the honeycomb hole, the surface area of the active carbon can be effectively utilized, so that the adhering amount of the active carbon is increased on the premise that the appearance size of a honeycomb carrier is not changed, the formaldehyde adsorption efficiency is improved, and the formaldehyde adsorption effect is better. The invention also relates to a preparation method of the filter screen for removing formaldehyde, which comprises the following steps of coating glue on honeycombs; airing; the carbon powder is pasted, namely compared with spraying, the method is simpler to operate and is easier to ensure the uniform pasting effect of the activated carbon.
Description
Technical Field
The invention relates to the technical field of air purification, in particular to a filter screen for removing formaldehyde and a preparation method thereof.
Background
Formaldehyde which causes harm to human bodies in life is everywhere. The related articles comprise furniture and wood floors; children garments, easy-care shirts; instant noodles, rice noodles; water soaked squid, sea cucumber, beef tripe and shrimp meat; especially the decorative material for room, various paints and coatings, and plywood, fiberboard, shaving board and other boards in furniture contain a large amount of urea-formaldehyde resin mainly containing formaldehyde. Therefore, in order to improve the life quality of people and ensure the health of people, the air purifier capable of removing formaldehyde is produced, wherein the filter screen for removing formaldehyde is an important part influencing the formaldehyde removing efficiency of the air purifier.
At present, in the existing filter screen for removing formaldehyde, the honeycomb carrier material is mainly made of PP material, so that the wall thickness of honeycomb holes is thicker, the effective air inlet area is smaller, and the formaldehyde adsorption efficiency is low; meanwhile, the pore cavity of the honeycomb holes is cylindrical, the area of the inner wall is small, the amount of carbon adhered is small, and the formaldehyde adsorption efficiency is low; and the active carbon adopted by the method is granular carbon, so that the contact area is small, and the formaldehyde adsorption efficiency is low.
In addition, the most common method for manufacturing the filter screen for removing formaldehyde is to mix activated carbon, a dispersing agent and a catalyst on a porous substrate, add an adhesive, dissolve a flame retardant in water to prepare a daub, and coat the daub on the surface of the porous structure. The method is characterized in that activated carbon, a preparation agent and an aqueous solution are stirred and mixed to prepare daub, and then the daub is coated on the surface of the porous structure, in the process, the porous structure of the activated carbon is easily blocked by the aqueous solution and the glue, so that the formaldehyde adsorption efficiency is greatly reduced, the formaldehyde absorption amount of a single filter plate is reduced, the service life of the single filter plate is shortened, and the filter plate is frequently replaced to cause troubles.
Disclosure of Invention
The invention aims to provide a preparation method of a filter screen for removing formaldehyde, which aims to solve the technical problem of low formaldehyde adsorption efficiency in the prior art.
The technical problem of the invention is mainly solved by the following technical scheme: the filter screen for removing formaldehyde comprises a honeycomb carrier, wherein honeycomb holes penetrating through the honeycomb carrier are formed in the honeycomb carrier, and granular or powdery active carbon is uniformly arranged on the inner wall of each honeycomb hole.
Because the honeycomb holes of the honeycomb carrier are mainly used for air supply to pass through, the active carbon is arranged on the inner wall of the honeycomb holes, namely the active carbon is arranged on the air duct, the active carbon can be utilized to adsorb formaldehyde in the air to the maximum extent, and the formaldehyde adsorption efficiency is improved. The active carbon is powder particle shape or likepowder, compares in graininess object, when pasting on honeycomb holes's inner wall, can effectively utilize its surface area, and even cover is on its full surface, and can not have empty surface to can make under the unchangeable prerequisite of honeycomb carrier overall dimension, the volume of pasting of active carbon rises, thereby improves formaldehyde adsorption efficiency. Meanwhile, the activated carbon is uniformly distributed on the inner wall of the honeycomb holes, so that the activated carbon can uniformly react with formaldehyde in the air, and the formaldehyde adsorption effect is better.
Preferably, the honeycomb carrier is a porous honeycomb carrier made of metal.
Compared with a honeycomb carrier made of a PP material, the porous honeycomb carrier made of metal can make the wall thickness of honeycomb holes thinner, for example, when the wall thickness of the honeycomb carrier made of the PP material is 1.2mm to meet the requirements of relevant structural stability and the like, the wall thickness of the honeycomb carrier made of the metal material is only 0.5mm to meet the requirements of relevant structural stability and the like, so that the effective ventilation area of the honeycomb carrier is larger, the air volume passing through the honeycomb carrier in unit time is larger, and the formaldehyde adsorption efficiency is remarkably improved. For example, when the pore diameter of the honeycomb pores is 6mm, the effective ventilation area can be increased by 10%, and when the size of the honeycomb pores is smaller, the proportion of the increased effective ventilation area is higher, and the advantage of using metal as the honeycomb carrier is more obvious. It should be noted that this effect is suitable for various shapes of honeycomb holes.
Preferably, the honeycomb holes have a regular hexagonal prism shape.
The honeycomb holes are in a regular hexagonal prism shape, namely the cross sections of the honeycomb holes in the aperture direction are in a regular hexagon shape, and compared with the cylindrical honeycomb holes with the same size, the surface area of the inner wall of each honeycomb hole can be increased by 10%, and the sticking amount of activated carbon on the inner wall of each honeycomb hole is correspondingly increased, so that the formaldehyde absorption efficiency is improved. And then the honeycomb holes are regular hexagonal prism shape, then the upper and lower surface of honeycomb holes's inner wall perpendicular to honeycomb carrier, thereby make the wind direction of its wind that leads to be the upper and lower surface of perpendicular to honeycomb carrier, parallel and honeycomb holes's inner wall, not only can avoid wind directly to blow and cause the active carbon to peel off, can also make the active carbon of adhesion on honeycomb holes's inner wall can be even with formaldehyde reaction in the air, avoid causing partly active carbon to have formaldehyde adsorption saturation, and partly active carbon has not started adsorbing formaldehyde yet, thereby influence formaldehyde adsorption effect, cause the wasting of resources.
Preferably, the outer surface of the honeycomb carrier is covered with mesh cloth, the mesh cloth is provided with through holes, and the aperture of the through holes is not larger than that of the honeycomb holes.
Be equipped with the through-hole on the screen cloth, the aperture of through-hole is not more than the aperture of honeycomb holes to cover the screen cloth on honeycomb carrier surface, the screen cloth covers on honeycomb holes's surface promptly, can reach the effect of debris such as prefiltration sand soil, hair or visible tiny granule, avoids this kind of debris to get into honeycomb holes, thereby shields the active carbon influence active carbon adsorption effect or bumps and peels off the honeycomb holes inner wall with the active carbon.
The mesh cloth is a fabric with mesh holes, can be a screen mesh made of metal, and can also be a gauze. As long as a preliminary filtration of sand, hair or visible fine particles is achieved.
Preferably, the mesh cloth comprises a first mesh cloth arranged on one side surface of the honeycomb carrier and a second mesh cloth arranged on the financing surface of the honeycomb carrier, and the first mesh cloth and the second mesh cloth are fixed on the honeycomb carrier through edge wrapping bands.
The screen cloth divide into first screen cloth and second screen cloth to fix around the honeycomb carrier through the bordure area, and make the screen cloth fixed firm, and easy operation, be convenient for implement. The first mesh cloth and the second mesh cloth can respectively cover the upper surface and the lower surface of the honeycomb carrier, contact or coincide with the periphery of the honeycomb carrier, and are wound around the honeycomb carrier for a circle through the edge-wrapping belt, so that the mesh cloth is fixed firmly.
Preferably, the edge wrapping tape is binding paper.
The edge wrapping tape adopts the edge wrapping paper, and is low in cost, convenient to implement and good in stability when used for fixing the screen cloth. Wherein, the screen cloth also can adopt black cloth, and the edge wrapping area also can adopt black paper of borduring.
Preferably, the activated carbon is in the form of powder and the length of the activated carbon is 0.1 to 1.5 mm.
The activated carbon is in the form of powder, and compared with the powder activated carbon, the powder activated carbon has the advantages that the mass is too small, the activated carbon is easy to float in the air, and the density of the activated carbon is relatively low, so that the powder activated carbon is easy to blow away by wind when a filter screen is manufactured, and the construction is not easy.
Wherein, when the length of the active carbon is 0.1-1.5mm, the invention not only has better formaldehyde adsorption efficiency, but also is convenient for construction. In this range, for better formaldehyde adsorption efficiency, it may be preferably 0.2 to 1.2mm, and may be further preferably 0.4 to 0.8 mm.
In addition, the activated carbon can be prepared by grinding and refining high-quality coconut shells serving as raw materials. The activated carbon is coconut shell carbon, and the formaldehyde adsorption efficiency is good.
The invention also aims to provide a preparation method of the filter screen for removing formaldehyde, so as to solve the technical problem of low formaldehyde adsorption efficiency in the prior art.
The technical problem of the invention is mainly solved by the following technical scheme: a preparation method of a filter screen for removing formaldehyde comprises the following steps,
coating glue on the honeycomb; soaking the honeycomb carrier in water-soluble glue; until the honeycomb carrier is soaked and water-soluble glue is coated on the honeycomb carrier;
airing; airing the honeycomb carrier; until the water-soluble glue can not drip;
pasting carbon powder; and sticking the activated carbon on the inner wall of the honeycomb holes.
Wherein: the above water-soluble gums include, but are not limited to, acrylic gum, polyvinyl alcohol, urethane emulsion, acrylic emulsion, vinyl acetate emulsion, styrene-butadiene rubber (emulsion), and nitrile-butadiene rubber.
By adopting the preparation method, the filter screen for removing formaldehyde can be prepared, and the preparation method for preparing the filter screen for removing formaldehyde also has the same technical effect as the filter screen for removing formaldehyde has the technical effect.
The whole honeycomb carrier is soaked in the water-soluble glue, so that the whole honeycomb carrier is contacted with the water-soluble glue, and the water-soluble glue is uniformly adhered to each surface of the whole honeycomb carrier; then the honeycomb carrier is dried until the water-soluble glue does not drip, including but not limited to placing the honeycomb carrier outdoors and drying the honeycomb carrier by natural wind, at the moment, redundant water of the water-soluble glue adhered on each surface of the whole honeycomb carrier is uniformly evaporated, or at the moment, due to the characteristics of the structure of the honeycomb carrier, the water-soluble glue on the outer surface of the honeycomb carrier is easier to dry than the water-soluble glue on the inner wall of the honeycomb hole, so when the water-soluble glue on the outer surface of the honeycomb carrier is completely evaporated, glue with higher concentration, drier and stronger viscosity is left on the inner wall of the honeycomb hole; paste the active carbon this moment on the inner wall of honeycomb holes, also need not the spraying, only need spill the active carbon on honeycomb holes's inner wall, just can make the even adhesion of active carbon on honeycomb holes's inner wall, compare in the spraying, operate more simply and the effect is better. Therefore, the activated carbon, the preparation agent and the aqueous solution do not need to be stirred and mixed to prepare the daub, namely the activated carbon can not be blocked, so that the formaldehyde adsorption efficiency is improved, the air purification time is shortened, the formaldehyde absorption amount of the filter plate is improved, the service life of a single filter plate is prolonged, and the trouble caused by frequent replacement of the filter plate is avoided.
Preferably, the method further comprises the following steps after the step of pasting the carbon powder,
brushing glue on the surface; brushing glue on the upper surface and the lower surface of the honeycomb carrier;
pasting the mesh cloth; adhering screen cloth to the upper surface and the lower surface of the honeycomb carrier;
fixing the surrounding edge; and fixing the mesh cloth around the honeycomb carrier through a wrapping band.
According to the invention, the effect of primarily fixing the mesh cloth is achieved by brushing glue on the upper and lower surfaces of the honeycomb carrier, and the periphery of the mesh cloth is bound and fixed through the binding belt, so that the mesh cloth is firmly fixed and is convenient to implement.
Preferably, the activated carbon is a granular or powdery activated carbon modified by soaking with a chemical agent.
Wherein the chemical reagent includes but is not limited to a mixed solution consisting of calcium chloride, carbohydrazide and water. The activated carbon is prepared by soaking and modifying with chemical reagents, and the formaldehyde adsorption capacity of the activated carbon can be improved.
Based on this, compared with the prior art, the invention has the advantage of high formaldehyde adsorption efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural view of a filter screen cloth of the invention for removing formaldehyde;
FIG. 2 is a sectional view of the filter net for removing formaldehyde according to the present invention;
FIG. 3 is a schematic structural view of a honeycomb carrier of the present invention;
fig. 4 is an enlarged view of the portion a of fig. 3 according to the present invention.
Reference numerals:
1-a honeycomb carrier; 2-activated carbon; 3-screen cloth;
4-edge wrapping band; 11-honeycomb holes; 31-a through hole;
32-a first web; 33-second web.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The first embodiment of the filter screen for removing formaldehyde is as follows:
referring to fig. 1, 2, 3 and 4, the filter screen for removing formaldehyde comprises a honeycomb carrier 1, honeycomb holes 11 penetrating through the honeycomb carrier 1 are formed in the honeycomb carrier 1, and powdered or powdery activated carbon 2 is uniformly arranged on the inner walls of the honeycomb holes 11.
Because the honeycomb holes of the honeycomb carrier are mainly used for air supply to pass through, the active carbon is arranged on the inner wall of the honeycomb holes, namely the active carbon is arranged on the air duct, the active carbon can be utilized to adsorb formaldehyde in the air to the maximum extent, and the formaldehyde adsorption efficiency is improved. The active carbon is powder particle shape or likepowder, compares in graininess object, when pasting on honeycomb holes's inner wall, can effectively utilize its surface area, and even cover is on its full surface, and can not have empty surface to can make under the unchangeable prerequisite of honeycomb carrier overall dimension, the volume of pasting of active carbon rises, thereby improves formaldehyde adsorption efficiency. Meanwhile, the activated carbon is uniformly distributed on the inner wall of the honeycomb holes, so that the activated carbon can uniformly react with formaldehyde in the air, and the formaldehyde adsorption effect is better.
Referring to fig. 1, a honeycomb carrier 1 is a porous honeycomb carrier made of metal.
Compared with a honeycomb carrier made of a PP material, the porous honeycomb carrier made of metal can make the wall thickness of honeycomb holes thinner, for example, when the wall thickness of the honeycomb carrier made of the PP material is 1.2mm to meet the requirements of relevant structural stability and the like, the wall thickness of the honeycomb carrier made of the metal material is only 0.5mm to meet the requirements of relevant structural stability and the like, so that the effective ventilation area of the honeycomb carrier is larger, the air volume passing through the honeycomb carrier in unit time is larger, and the formaldehyde adsorption efficiency is remarkably improved. For example, when the pore diameter of the honeycomb pores is 6mm, the effective ventilation area can be increased by 10%, and when the size of the honeycomb pores is smaller, the proportion of the increased effective ventilation area is higher, and the advantage of using metal as the honeycomb carrier is more obvious. It should be noted that this effect is suitable for various shapes of honeycomb holes.
Referring to fig. 1, 3, and 4, the honeycomb holes 11 have a regular hexagonal prism shape.
The honeycomb holes are in a regular hexagonal prism shape, namely the cross sections of the honeycomb holes in the aperture direction are in a regular hexagon shape, and compared with the cylindrical honeycomb holes with the same size, the surface area of the inner wall of each honeycomb hole can be increased by 10%, and the sticking amount of activated carbon on the inner wall of each honeycomb hole is correspondingly increased, so that the formaldehyde absorption efficiency is improved. And then the honeycomb holes are regular hexagonal prism shape, then the upper and lower surface of honeycomb holes's inner wall perpendicular to honeycomb carrier, thereby make the wind direction of its wind that leads to be the upper and lower surface of perpendicular to honeycomb carrier, parallel and honeycomb holes's inner wall, not only can avoid wind directly to blow and cause the active carbon to peel off, can also make the active carbon of adhesion on honeycomb holes's inner wall can be even with formaldehyde reaction in the air, avoid causing partly active carbon to have formaldehyde adsorption saturation, and partly active carbon has not started adsorbing formaldehyde yet, thereby influence formaldehyde adsorption effect, cause the wasting of resources.
Referring to fig. 2, the mesh cloth 3 covers the outer surface of the honeycomb carrier 1, through holes 31 are formed in the mesh cloth 3, and the diameter of each through hole 31 is not larger than that of each honeycomb hole 11.
Be equipped with the through-hole on the screen cloth, the aperture of through-hole is not more than the aperture of honeycomb holes to cover the screen cloth on honeycomb carrier surface, the screen cloth covers on honeycomb holes's surface promptly, can reach the effect of debris such as prefiltration sand soil, hair or visible tiny granule, avoids this kind of debris to get into honeycomb holes, thereby shields the active carbon influence active carbon adsorption effect or bumps and peels off the honeycomb holes inner wall with the active carbon.
The mesh cloth is a fabric with mesh holes, can be a screen mesh made of metal, and can also be a gauze. As long as a preliminary filtration of sand, hair or visible fine particles is achieved.
Referring to fig. 2, the mesh cloth 3 includes a first mesh cloth 32 disposed on one side surface of the honeycomb carrier 1 and a second mesh cloth 33 disposed on the other side surface of the honeycomb carrier 1, and the first mesh cloth 32 and the second mesh cloth 33 are fixed around the honeycomb carrier 1 by the edge-wrapping tape 4.
The screen cloth divide into first screen cloth and second screen cloth to fix around the honeycomb carrier through the bordure area, and make the screen cloth fixed firm, and easy operation, be convenient for implement.
Referring to fig. 2, the edge wrapping tape 4 is binding paper.
The edge wrapping tape adopts the edge wrapping paper, and is low in cost, convenient to implement and good in stability when used for fixing the screen cloth. Wherein, the screen cloth also can adopt black cloth, and the edge wrapping area can adopt black paper of borduring.
Referring to fig. 2, 3 and 4, the activated carbon 2 is in the form of powder, and the length of the activated carbon 2 is 0.1-1.5 mm.
The activated carbon is in the form of powder, and compared with the powder activated carbon, the powder activated carbon has the advantages that the mass is too small, the activated carbon is easy to float in the air, and the density of the activated carbon is relatively low, so that the powder activated carbon is easy to blow away by wind when a filter screen is manufactured, and the construction is not easy.
Wherein, when the length of the active carbon is 0.1-1.5mm, the invention not only has better formaldehyde adsorption efficiency, but also is convenient for construction. In this range, for better formaldehyde adsorption efficiency, it may be preferably 0.2 to 1.2mm, and may be further preferably 0.4 to 0.8 mm.
In addition, the activated carbon can be prepared by grinding and refining high-quality coconut shells serving as raw materials. The activated carbon is coconut shell carbon, and the formaldehyde adsorption efficiency is good.
The first embodiment of the preparation method of the filter screen for removing formaldehyde comprises the following steps:
a preparation method of a filter screen for removing formaldehyde comprises the following steps,
coating glue on the honeycomb; soaking the honeycomb carrier 1 in water-soluble glue until the honeycomb carrier is soaked and the water-soluble glue is coated on the honeycomb carrier;
airing; drying the honeycomb carrier 1 until the water-soluble glue does not drip;
pasting carbon powder; the activated carbon 2 is stuck to the inner walls of the honeycomb holes 11.
Brushing glue on the surface; brushing glue on the upper and lower surfaces of the honeycomb carrier 1;
pasting the mesh cloth 3; adhering the mesh cloth 3 on the upper and lower surfaces of the honeycomb carrier 1;
fixing the surrounding edge; and fixing the mesh cloth 3 around the honeycomb carrier 1 through a wrapping band 4.
Wherein: the above water-soluble gums include, but are not limited to, acrylic gum, polyvinyl alcohol, urethane emulsion, acrylic emulsion, vinyl acetate emulsion, styrene-butadiene rubber (emulsion), and nitrile-butadiene rubber.
By adopting the preparation method, the filter screen for removing formaldehyde can be prepared, and the preparation method for preparing the filter screen for removing formaldehyde also has the same technical effect as the filter screen for removing formaldehyde has the technical effect.
The whole honeycomb carrier is soaked in the water-soluble glue, so that the whole honeycomb carrier is contacted with the water-soluble glue, and the water-soluble glue is uniformly adhered to each surface of the whole honeycomb carrier; then the honeycomb carrier is dried until the water-soluble glue does not drip, including but not limited to placing the honeycomb carrier outdoors and drying the honeycomb carrier by natural wind, at the moment, redundant water of the water-soluble glue adhered on each surface of the whole honeycomb carrier is uniformly evaporated, or at the moment, due to the characteristics of the structure of the honeycomb carrier, the water-soluble glue on the outer surface of the honeycomb carrier is easier to dry than the water-soluble glue on the inner wall of the honeycomb hole, so when the water-soluble glue on the outer surface of the honeycomb carrier is completely evaporated, glue with higher concentration, drier and stronger viscosity is left on the inner wall of the honeycomb hole; paste the active carbon this moment on the inner wall of honeycomb holes, also need not the spraying, only need spill the active carbon on honeycomb holes's inner wall, just can make the even adhesion of active carbon on honeycomb holes's inner wall, compare in the spraying, operate more simply and the effect is better. Therefore, the activated carbon, the preparation agent and the aqueous solution do not need to be stirred and mixed to prepare the daub, namely the activated carbon can not be blocked, so that the formaldehyde adsorption efficiency is improved, the air purification time is shortened, the formaldehyde absorption amount of the filter plate is improved, the service life of a single filter plate is prolonged, and the trouble caused by frequent replacement of the filter plate is avoided.
Moreover, the effect of primarily fixing the mesh cloth is achieved by brushing glue on the upper surface and the lower surface of the honeycomb carrier, and the periphery of the mesh cloth is bound and fixed through the binding belt, so that the mesh cloth is firmly fixed and is convenient to implement.
The activated carbon 2 is a granular or powdery activated carbon 2 prepared by soaking and modifying a chemical reagent.
Wherein the chemical reagent includes but is not limited to a mixed solution consisting of calcium chloride, carbohydrazide and water. The activated carbon is prepared by soaking and modifying with chemical reagents, and the formaldehyde adsorption capacity of the activated carbon can be improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a remove filter screen of formaldehyde, includes honeycomb carrier, its characterized in that: the honeycomb carrier is provided with honeycomb holes penetrating through the honeycomb carrier, and the inner wall of each honeycomb hole is provided with powdered or powdery active carbon.
2. The filter screen for removing formaldehyde according to claim 1, wherein: the honeycomb carrier is a porous honeycomb carrier made of metal.
3. The filter screen for removing formaldehyde according to claim 1 or 2, which is characterized in that: the honeycomb holes are in the shape of a regular hexagonal prism.
4. The filter screen for removing formaldehyde according to claim 1, wherein: the outer surface of the honeycomb carrier is covered with mesh cloth, through holes are formed in the mesh cloth, and the aperture of each through hole is not larger than that of each honeycomb hole.
5. The filter screen for removing formaldehyde according to claim 4, wherein: the mesh cloth comprises a first mesh cloth arranged on one side surface of the honeycomb carrier and a second mesh cloth arranged on the other side surface of the honeycomb carrier, and at least one of the first mesh cloth and the second mesh cloth is fixed on the honeycomb carrier through a wrapping band.
6. The filter screen for removing formaldehyde according to claim 5, wherein: the edge wrapping tape is edge paper.
7. The filter screen for removing formaldehyde according to claim 1, wherein: the activated carbon is in the form of powder particles, and the length of the activated carbon is 0.1-1.5 mm.
8. A preparation method of a filter screen for removing formaldehyde is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
soaking a honeycomb carrier in a water-soluble glue until the honeycomb carrier is soaked and the water-soluble glue is coated on the honeycomb carrier;
drying the honeycomb carrier until the water-soluble glue does not drip;
and sticking the activated carbon on the inner wall of the honeycomb holes of the honeycomb carrier.
9. The method for preparing the filter screen for removing formaldehyde according to claim 8, wherein the method comprises the following steps: after the step of pasting the carbon powder, the method also comprises the following steps,
brushing glue on the upper surface and the lower surface of the honeycomb carrier;
adhering screen cloth to the upper surface and the lower surface of the honeycomb carrier;
and fixing the mesh cloth on the honeycomb carrier through a wrapping band.
10. The method for preparing the filter screen for removing formaldehyde according to claim 8, wherein the method comprises the following steps: the active carbon is granular or powdery active carbon prepared by soaking and modifying chemical reagents.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113324702A (en) * | 2021-05-07 | 2021-08-31 | 宁波威霖住宅设施有限公司 | Paper film material and filler integrated carrier for testing tool |
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