阅读说明：本技术 一种空气净化用过滤器 (Filter for air purification ) 是由 贺洋 安卫东 胡锐 于 2020-06-24 设计创作，主要内容包括：本发明公开了一种空气净化用过滤器。本发明的一种空气净化用过滤器,包括滤芯,所述滤芯包括由外向内依次连接的第一滤芯和第二滤芯,所述第二滤芯包括第二滤芯过滤层,所述第二滤芯过滤层为多功能空气过滤材料。本发明的空气净化用过滤器,结构简单,可过滤颗粒和部分细菌,杀灭细菌和降解甲醛分子,能起到全方位的净化功能。(The invention discloses a filter for air purification. The filter for air purification comprises a filter element, wherein the filter element comprises a first filter element and a second filter element which are sequentially connected from outside to inside, the second filter element comprises a second filter element filtering layer, and the second filter element filtering layer is a multifunctional air filtering material. The air purification filter has a simple structure, can filter particles and partial bacteria, kill the bacteria and degrade formaldehyde molecules, and can play an all-round purification function.)

1. The utility model provides a filter for air purification, includes the filter core, its characterized in that, the filter core includes first filter core and the second filter core that outside-in connects gradually, the second filter core includes second filter core filter layer, second filter core filter layer is multi-functional air filter material.

2. The air cleaning filter according to claim 1, wherein the multifunctional air filter material is obtained by compounding a fiber base fabric containing a functional auxiliary agent and a nano coating; the functional auxiliary agent is composite tourmaline powder, and the nano coating is a photocatalyst layer;

preferably, the composite tourmaline powder is prepared from superfine tourmaline powder and rare earth metal;

preferably, the particle size of the superfine tourmaline powder is less than or equal to 3 mu m.

3. The air cleaning filter according to claim 2, wherein the rare earth metal is any one of cerium, lanthanum, europium, neodymium, erbium, and praseodymium.

4. The air cleaning filter according to any one of claims 1 to 3, wherein the photocatalyst in the photocatalyst layer is any one of titanium dioxide, bismuth oxychloride and manganese oxide or a mixture of at least two of these.

5. The air cleaning filter according to any one of claims 1 to 4, wherein the first filter element and the second filter element are connected by a neck in a sleeve shape from outside to inside.

6. The air cleaning filter according to any one of claims 1 to 5, wherein the first filter element has a circular or square shape;

preferably, the second filter element is circular or square.

7. The air cleaning filter according to any one of claims 1 to 6, wherein the second filter element includes a second filter element filter layer, a second filter element base, a UV lamp, and a power supply interface;

the second filter element filtering layer is connected with the second filter element base from top to bottom;

the ultraviolet lamp is fixed on the second filter element base and is connected with the power supply interface.

8. The air cleaning filter according to any one of claims 1 to 7, wherein the first filter element comprises a first filter element top cover, a first filter element filtering layer and a first filter element base which are sequentially connected from top to bottom.

9. The air cleaning filter according to any one of claims 1 to 8, wherein the first filter element filter layer is folded to have a V-shape.

10. The air cleaning filter according to any one of claims 1 to 9, wherein the first filter element filtration layer is one of chemical fibers and glass fibers.

Technical Field

The invention belongs to the field of air filtration, and particularly relates to a filter for air purification.

Background

The air filter is a core component of air treatment equipment, is used for removing harmful substances such as particles, bacteria and the like in gas, and is widely applied to air conditioners, automobiles and purifiers.

At present, the general air filter has limited use effect and only has the effect of intercepting part of particles and bacteria. The solution is mainly to stack filter elements with different functions, so that the efficiency is improved, particles and bacteria can be well filtered, the effects of continuously killing the bacteria and degrading harmful gas molecules cannot be achieved, and the high-standard and all-round purification requirements are difficult to meet. In addition, such air filter often has a complex structure, and when harmful substances accumulate to a certain degree, the air filter needs to be replaced regularly, so that the use cost is high.

CN207270891U discloses a filter core and air cleaner for air purification belongs to air purification equipment technical field. The utility model relates to a filter element and air filter for air purification, the filter element comprises at least two layers of filter material layers, wherein, the filter element comprises at least one layer of first filter material and at least one layer of second filter material, the first filter material and the second filter material are fixedly connected into a whole through hot-pressing compounding, so that the filter element has improved filtering efficiency and increased dust holding capacity, thereby ensuring high-efficiency filtering and prolonging the service life; the utility model provides an air filter, includes foretell filter core for air purification, still includes fixed frame, and filter core fixed mounting is in fixed frame, and fixed frame includes a plurality of end to end's frame, and it connects for detachable connected mode for the installation and the maintenance of frame are more simple and convenient, and the change of filter core is more convenient. The air filter has a good filtering effect, but cannot continuously kill bacteria and degrade harmful gas molecules, and is difficult to meet the high-standard and comprehensive purification requirements.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide the air purification filter which is simple in structure, has the functions of filtering and purifying, can filter particles and partial bacteria, kill the bacteria and degrade formaldehyde molecules, and can play a role in omnibearing purification.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a filter for air purification, includes the filter core, the filter core includes first filter core and the second filter core that outside-in connects gradually, the second filter core includes second filter core filter layer, second filter core filter layer is the multi-functional air filter material of negative oxygen ion can release.

The filter for air purification adopts the combination of the double-layer filter elements, has simple structure, and the first filter element is a coarse filter layer and plays a role in filtering particles and part of bacteria; the second filter element is a fine filter layer, has the purification function, kills bacteria and degrades formaldehyde molecules, and can play an all-round purification function.

The multifunctional air filtering material is obtained by compounding fiber base cloth containing functional additives and a nano coating; the functional assistant is composite tourmaline powder, and the nano coating is a photocatalyst layer.

According to the multifunctional air filtering material, the functional assistant composite tourmaline powder has double functions of continuously releasing negative oxygen ions and electrostatic adsorption; the fiber base cloth is combined with the photocatalyst to endow the material with the functions of catalytic degradation and purification, so that the filter material has multiple functions and high efficiency of filtration, sterilization, purification, health care and the like.

The composite tourmaline powder is prepared from superfine tourmaline powder and rare earth metal.

Preferably, the particle size of the superfine tourmaline powder is less than or equal to 3 mu m.

The rare earth metal is any one of cerium, lanthanum, europium, neodymium, erbium and praseodymium.

The photocatalyst in the photocatalyst layer is any one or a mixture of at least two of titanium dioxide, bismuth oxychloride and manganese oxide.

The preparation method of the multifunctional air filter material comprises the following steps:

1) dispersing superfine tourmaline powder into water, adding a rare earth metal nitrate solution, stirring and dispersing uniformly, adjusting the pH value, filtering, washing and drying, and calcining the obtained powder to obtain composite tourmaline powder;

2) mixing the composite tourmaline powder prepared in the step 1) with a surface modifier, and then adding the mixture into a solvent for dispersion to obtain a dispersion emulsion;

3) adding a polymer into the dispersed emulsion obtained in the step 2), and dissolving to obtain an electrostatic spinning solution;

4) performing electrostatic spinning on the electrostatic spinning solution prepared in the step 3) to prepare fiber base cloth;

5) mixing the photocatalyst, the binder and water, and stirring and mixing uniformly at a high speed to obtain emulsion containing the photocatalyst;

6) and (3) spraying the emulsion containing the photocatalyst obtained in the step (5) on the fiber base cloth prepared in the step (4), drying and curing to obtain the multifunctional air filter material.

The multifunctional filter material of the present invention has multiple functions of filtration, sterilization, purification, health care, and the like.

In the step 1), the mass of the rare earth metal accounts for 6-10% of the mass of the ultrafine tourmaline powder, for example, the mass of the rare earth metal accounts for 6%, 7%, 8%, 9%, 10% of the mass of the ultrafine tourmaline powder, and the composite tourmaline obtained in the range has the best performance.

In the step 1), the calcining temperature is 300-800 ℃, for example, the calcining temperature is 300 ℃, 400 ℃, 500 ℃, 600 ℃, 700 ℃, 800 ℃ and the like, and the calcining time is 2-4 h, for example, the calcining time is 2h, 2.5h, 3h, 3.5h, 4h and the like.

In the step 2), the weight parts of the composite tourmaline powder are 2-15 parts, the weight parts of the solvent are 85-98 parts, and the sum of the weight parts of the composite tourmaline powder and the solvent is 100 parts.

Preferably, the solvent is any one or a mixture of at least two of N-N dimethylformamide, tetrahydrofuran, isopropanol, isobutanol, acetone, ethanol, dichloromethane, dimethylacetamide and dimethylsulfoxide; typical but non-limiting combinations of such mixtures are N-N dimethylformamide, mixtures of tetrahydrofuran, isopropanol, mixtures of isobutanol, acetone, mixtures of acetone, ethanol, mixtures of dichloromethane, dimethylacetamide, mixtures of dimethylacetamide and dimethylsulfoxide, N-N dimethylformamide, tetrahydrofuran, mixtures of isopropanol, mixtures of tetrahydrofuran, isopropanol, isobutanol, mixtures of isobutanol, acetone, ethanol, mixtures of dichloromethane, dimethylacetamide and dimethylsulfoxide, N-N dimethylformamide, tetrahydrofuran, isopropanol, mixtures of isobutanol, isopropanol, acetone, mixtures of ethanol, dichloromethane, dimethylacetamide and dimethylsulfoxide, N-N dimethylformamide, mixtures of tetrahydrofuran, dimethylacetamide and dimethylsulfoxide, mixtures of N-N dimethylformamide, tetrahydrofuran, isopropanol, acetone, mixtures of ethanol, dichloromethane, dimethylacetamide and dimethylsulfoxide, N-N dimethylformamide, tetrahydrofuran, mixtures of isopropanol, acetone, mixtures of N-dimethylformamide, mixtures of isopropanol, acetone, and, Tetrahydrofuran, isopropanol, isobutanol, mixtures of acetone, tetrahydrofuran, isopropanol, isobutanol, acetone, mixtures of ethanol, acetone, ethanol, dichloromethane, dimethylacetamide and dimethylsulfoxide, N-N dimethylformamide, tetrahydrofuran, isopropanol, isobutanol, acetone, mixtures of ethanol, tetrahydrofuran, isopropanol, isobutanol, acetone, ethanol, mixtures of dichloromethane, isobutanol, acetone, ethanol, dichloromethane, dimethylacetamide and dimethylsulfoxide, N-N dimethylformamide, tetrahydrofuran, isopropanol, isobutanol, acetone, mixtures of dichloromethane, tetrahydrofuran, isopropanol, acetone, ethanol, dichloromethane, tetrahydrofuran, isopropanol, isobutanol, mixtures of acetone, ethanol, dichloromethane, dimethylacetamide, tetrahydrofuran, isopropanol, isobutanol, acetone, isopropanol, mixtures of acetone, isopropanol, acetone, ethanol, dichloromethane, dimethylacetamide, tetrahydrofuran, isopropanol, mixtures of isopropanol, acetone, mixtures of acetone, isopropanol, acetone, mixtures of isopropanol, acetone, ethanol, dichloromethane, a mixture of dimethylacetamide and dimethylsulfoxide, N-N dimethylformamide, tetrahydrofuran, isopropanol, isobutanol, acetone, ethanol, dichloromethane, a mixture of dimethylacetamide and dimethylsulfoxide, and the like.

Preferably, the mass of the surface modifier accounts for 0.1-1.5% of the mass of the composite tourmaline powder; for example, the surface modifier accounts for 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5% or the like of the composite tourmaline powder by mass.

Wherein the surface modifier can improve the compatibility and the dispersibility of the composite tourmaline in the polymer. Preferably, the surface modifier is any one or a mixture of at least two of gamma-aminopropyltriethoxysilane, gamma-aminopropyltrimethoxysilane, 3- (2-aminoethyl) aminopropyltrimethoxysilane, gamma-ureidopropyltriethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropylmethyldimethoxysilane, vinyltrichlorosilane, vinyltriethoxysilane, vinyltrimethoxysilane, vinyltris (2-methoxyethoxy) silane and vinyltriacetoxysilane.

In the step 3), the weight parts of the dispersion emulsion are 80-95 parts, the weight parts of the polymer are 5-20 parts, and the sum of the weight parts of the dispersion emulsion and the polymer is 100 parts.

Preferably, the polymer is any one or a mixture of at least two of polyvinyl chloride, fluorinated ethylene propylene copolymer, polypropylene, ethylene-vinyl acetate copolymer, chlorinated polyvinyl chloride, soluble polytetrafluoroethylene, polyvinylidene fluoride, polyvinyl butyral, polystyrene, polyester, polyvinyl acetate, nylon 6, nylon 66, polyvinyl alcohol, polyamide, polyarylsulfone, polyethersulfone, homopolyphenylene polyimide, polymethyl methacrylate, polyaniline, polyethylene oxide, polyvinylpyrrolidone, polyacrylonitrile, polycaprolactone, polyethylene terephthalate, polyethylene glycol, polyurethane, polysulfone, polyethersulfone, and polyvinylidene fluoride-hexafluoropropylene.

In the step 5), the weight parts of the photocatalyst are 1-10 parts, the weight parts of the binder are 10-50 parts, the weight parts of the water are 40-81 parts, and the sum of the weight parts of the photocatalyst, the binder and the water is 100 parts.

Preferably, in step 5), the binder is one or a mixture of at least two of a water-based polyurethane binder, a water-based acrylic binder, a water-based epoxy resin binder, a water-based vinyl acetate adhesive and a silicone.

In the step 5), the high-speed stirring is to uniformly mix the photocatalyst and the binder, and the specific stirring speed can be adjusted according to actual conditions, so that the purpose of uniform stirring can be achieved, and is not particularly limited herein.

As a preferable scheme of the invention, the preparation method of the multifunctional air filter material comprises the following steps:

1) dispersing superfine tourmaline powder with the particle size of less than or equal to 3 mu m into water, adding a rare earth metal nitrate solution, stirring and dispersing uniformly, then dropwise adding an ammonia water solution to adjust the pH value, and finally filtering, washing and drying to obtain powder, calcining the powder at 300-800 ℃ for 2-4 h to obtain composite tourmaline powder with the rare earth metal content of 6-10%;

2) mechanically mixing 2-15 parts by weight of the composite tourmaline powder prepared in the step 1) and a surface modifier in a high-speed stirrer, and then adding the mixture into 85-98 parts by weight of a solvent for ultrasonic dispersion to obtain a dispersion emulsion; wherein the mass of the surface modifier accounts for 0.1-1.5% of the mass of the composite tourmaline powder;

3) adding 5-20 parts by weight of polymer into 80-95 parts by weight of the dispersed emulsion obtained in the step 2), and dissolving by ultrasonic oscillation to obtain an electrostatic spinning solution;

4) performing electrostatic spinning on the electrostatic spinning solution prepared in the step 3) to prepare fiber base cloth;

5) mixing 1-10 parts by weight of photocatalyst, 10-50 parts by weight of binder and 40-81 parts by weight of water, and uniformly stirring at a high speed to obtain emulsion containing the photocatalyst;

6) spraying emulsion containing photocatalyst on the fiber base cloth prepared in the step 4), and then drying and curing to obtain the multifunctional air filter material.

The first filter element and the second filter element are connected in a sleeve mode from outside to inside through clamping grooves.

Wherein the first filter element is round or square; preferably, the second filter element is circular or square.

Wherein, the second filter core is a fine filter layer, which has the functions of purification, sterilization and formaldehyde molecule degradation. The second filter element comprises a second filter element filtering layer, a second filter element base, an ultraviolet lamp and a power supply interface; the second filter element filtering layer is connected with the second filter element base from top to bottom; the ultraviolet lamp is fixed on the second filter element base and is connected with the power supply interface.

After the ultraviolet lamp is turned on, the multifunctional air filtering material is excited by the ultraviolet light to generate an electrostatic effect and a photocatalytic effect, and has a good removing effect on bacteria, formaldehyde and the like. Meanwhile, the material can continuously release negative ions, so that the air quality is further improved.

Wherein, first filter core includes from last first filter core top cap, first filter core filter layer and the first filter core base that connects gradually down.

Wherein, the first filter element filter layer is formed by folding and takes a V shape.

The first filter element filtering layer is any one of chemical fiber or glass fiber, and the first filter element is a coarse filtering layer and has a filtering effect of filtering particles and part of bacteria.

Compared with the prior art, the invention has the beneficial effects that:

(1) the air purification filter adopts a double-layer filter element combination, and the first filter element is a coarse filter layer and plays a role in filtering particles and part of bacteria; the second filter element is a fine filter layer, has a purification effect, kills bacteria and degrades formaldehyde molecules, has a simple structure, and can play an all-round purification function; wherein the release amount of negative ions is 6500-11230/cm³，PM_2.5The removal rate is 80-98%, the formaldehyde removal rate is 82-95%, and the sterilization rate is 95-99%.

(2) According to the air purification filter, the filter layer of the second filter element is made of special materials, and can generate electrostatic and photocatalytic effects under the excitation of ultraviolet light, so that electrostatic adsorption can be formed on fine particles, catalytic degradation can be generated on formaldehyde, and microorganisms such as bacteria and viruses can be killed.

(3) According to the air purification filter, the second filter element can be independently disassembled and assembled, particulate matters, bacteria and the like are not accumulated, and the filter does not need to be replaced regularly.

Drawings

FIG. 1 is a front view of an air cleaning filter according to the present invention;

FIG. 2 is a schematic view of an air cleaning filter according to the present invention;

FIG. 3 is a schematic top view of an air cleaning filter according to the present invention;

FIG. 4 is a schematic view of a first filter element structure of the air cleaning filter of the present invention;

FIG. 5 is a schematic view of a second filter element of the air cleaning filter according to the present invention;

the reference numbers are as follows:

11-a first cartridge filter layer; 12-a first cartridge top cap; 13-a first cartridge base; 21-a second cartridge filter layer; 22-an ultraviolet lamp; 23-a power interface; 24-a second cartridge base.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached figures 1-5.

As shown in fig. 1, 2 and 3, the air purification filter of the present invention comprises a filter element, wherein the filter element comprises a first filter element and a second filter element which are sequentially connected from outside to inside, and as shown in fig. 1 and 4, the first filter element comprises a first filter element top cover 12, a first filter element filtering layer 11 and a first filter element base 13 which are sequentially connected from top to bottom; as shown in fig. 5, the second filter cartridge includes a second filter cartridge filter layer 21, a second filter cartridge base 24, an ultraviolet lamp 22, and a power interface 23; the second filter element filtering layer 21 and the second filter element base 24 are mutually connected from top to bottom; the ultraviolet lamp 22 is fixed to the second cartridge base 24 and is connected to the power source 23. After the ultraviolet lamp is turned on, the multifunctional air filtering material is excited by the ultraviolet light to generate an electrostatic effect and a photocatalytic effect, and has a good removing effect on bacteria, formaldehyde and the like. Meanwhile, the material can continuously release negative ions, so that the air quality is further improved.

As shown in fig. 2 and 3, the first filter element and the second filter element are connected in a sleeve shape from outside to inside through the clamping groove, and the first filter element is circular or square; preferably, the second filter element is circular or square. Preferably, the first filter element filtering layer is formed by folding and is in a V shape. Wherein, the first filter element filtering layer is any one of chemical fiber or glass fiber.

The filter for air purification adopts the combination of the double-layer filter elements, has simple structure, and the first filter element is a coarse filter layer and plays a role in filtering particles and part of bacteria; the second filter element is a fine filter layer, has the purification function, kills bacteria and degrades formaldehyde molecules, and can play an all-round purification function. According to the multifunctional air filtering material, the functional assistant composite tourmaline powder has double functions of continuously releasing negative oxygen ions and electrostatic adsorption; the fiber base cloth is combined with the photocatalyst to endow the material with the functions of catalytic degradation and purification, so that the filter material has multiple functions and high efficiency of filtration, sterilization, purification, health care and the like.