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A kind of filter screen for air purifier and preparation method thereof

An air purifier and filter technology, which is applied in the field of air purification, can solve the problems of non-uniform dispersion, aggregation of active layer precursors, and large filter resistance of the filter, and achieve the effects of enhanced adsorption, long service life and low wind resistance

Active Publication Date: 2021-08-06
新昌县以琳环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the defects of the existing filter screens with large filter resistance, active layer precursors aggregated and not evenly dispersed, the invention discloses a filter screen for an air purifier and a preparation method thereof. The surface of the foamed iron grid is coated with carbon The modified foam iron mesh with microsphere coating makes it have both filtration and adsorption functions. After loading active components, a filter mesh integrating filtration, adsorption and catalysis is obtained, which further reduces air resistance and improves filtration. Catalytic activity of the net, prolonging its service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1) Modification of foam iron mesh

[0024] Weigh a certain amount of sucrose and dissolve it in distilled water and stir it at room temperature to dissolve it completely, then add foam iron mesh to it to completely immerse it in the solution and treat it under 200w ultrasonic conditions for 60 min, then transfer the whole mixture to water Heat the reaction kettle at 200°C for 6 hours, and after the reaction kettle is cooled to room temperature, the modified foam iron mesh coated with carbon microsphere coating will be obtained, and the obtained product will be dried at 105°C for 12 hours Roasting treatment under an argon atmosphere at 500°C for 3 hours to obtain a modified foamed iron grid; wherein the mass volume ratio of sucrose to deionized water is 0.4g / mL, and the weight ratio of foamed iron grid to sucrose is 1:0.05;

[0025] 2) Loading of active components

[0026] Dissolve titanyl sulfate, chloroplatinic acid and urea in an aqueous solution to form a mixed solu...

Embodiment 2

[0029] 1) Modification of foam iron mesh

[0030] Weigh a certain amount of sucrose and dissolve it in distilled water and stir it at room temperature to dissolve it completely, then add foam iron grid to it to completely immerse it in the solution and treat it under 400w ultrasonic conditions for 30 min, then transfer the whole mixture to water Heat the reaction kettle at 220°C for 4 hours, and after the reaction kettle is cooled to room temperature, the modified foam iron mesh coated with carbon microsphere coating will be obtained, and the obtained product will be dried at 110°C for 12 hours Roasting treatment under an argon atmosphere at 520°C for 2 hours to obtain a modified foamed iron mesh; wherein the mass volume ratio of sucrose to deionized water is 0.2g / mL, and the weight ratio of foamed iron mesh to sucrose is 1:0.15;

[0031] 2) Loading of active components

[0032] Dissolve titanyl sulfate, chloroplatinic acid and urea in an aqueous solution to form a mixed solu...

Embodiment 3

[0035] 1) Modification of foam iron mesh

[0036] Weigh a certain amount of sucrose and dissolve it in distilled water and stir it at room temperature to dissolve it completely, then add a foam iron grid to it to completely immerse it in the solution and treat it under 300w ultrasonic conditions for 45 min, then transfer the whole mixture to water Heat the reaction kettle at 210°C for 5 hours, and after the reaction kettle is cooled to room temperature, the modified foam iron mesh coated with carbon microsphere coating will be obtained, and the obtained product will be dried at 100°C for 12 hours Roasting treatment under an argon atmosphere at 480°C for 2 hours to obtain a modified iron foam grid; wherein the mass volume ratio of sucrose to deionized water is 0.3g / mL, and the weight ratio of iron foam grid to sucrose is 1:0.1;

[0037] 2) Loading of active components

[0038] Dissolve titanyl sulfate, chloroplatinic acid, and urea in an aqueous solution to form a mixed soluti...

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Abstract

The invention discloses a filter screen for an air purifier and a preparation method thereof. The filter screen comprises a base layer and an active layer, the base layer is a modified foam iron net coated with a carbon microsphere coating, and the active layer is located outside the base layer ; By immersing the foam iron mesh in the sucrose solution, followed by ultrasonic, hydrothermal reaction, drying, and roasting to obtain the modified foam iron mesh coated with carbon microsphere coating on the surface, that is, the matrix layer; then the matrix layer is immersed in the In the mixed solution formed by mixing titanyl sulfate, chloroplatinic acid, urea and deionized water, the surface is co-doped with Pt, N and S through the hydrothermal reaction, washing, drying and roasting. 2 Coated strainer. The present invention forms a modified foam iron net coated with a carbon microsphere coating on the surface of the foam iron net, so that it has both filtering and adsorption functions, and after loading active components, a kind of filter, adsorption and catalysis is obtained. The filter screen, while further reducing air resistance, improves the catalytic activity of the filter screen and prolongs its service life.

Description

technical field [0001] The invention belongs to the technical field of air purification, and relates to a filter screen for an air purifier and a preparation method thereof. Background technique [0002] Indoor is one of the most frequent and intimate environments that people come into contact with. People spend about 80-90% of their time indoors in a day, so the quality of the indoor environment directly affects people's health. Formaldehyde, toluene and PM2.5 are important components of indoor air pollutants. In order to reduce indoor air health risks, the use of air purifiers is one of the most effective means. In commonly used air purifiers, the combination of HEPA and activated carbon components can effectively remove dust, harmful gases and bacterial microorganisms, so as to achieve the purpose of clean air. However, both high-efficiency filters and activated carbon work by trapping pollutants on the material, and the material itself has its own adsorption capacity. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/20B01D46/00
CPCB01D39/20B01D46/0001B01D46/0027B01D46/0036
Inventor 王强
Owner 新昌县以琳环保科技有限公司
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