Device for detecting antibacterial property of photocatalytic printed product
By designing a photocatalytic antibacterial performance testing device for printed products with a light source adjustment plate and housing structure, the problem of single-dimensional testing was solved, and multi-dimensional antibacterial performance data under different light source intensities was obtained, providing a reliable evaluation basis.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU VOCATIONAL COLLEGE OF SCI & TECH
- Filing Date
- 2025-05-06
- Publication Date
- 2026-05-01
AI Technical Summary
Existing methods for detecting the antibacterial properties of photocatalytic printed products are relatively limited and cannot effectively compare results under different light source intensities, resulting in insufficient test data.
A photocatalytic antibacterial performance testing device for printed products was designed. It adopts a light source adjustment plate and a housing structure. The light source adjustment plate is made of optical glass and has an arc-shaped stepped shape. Combined with the concave part, it forms a concave lens to realize the detection under different light intensities. The housing is composed of an opaque half-cover and a glass half-cover, which provide dark and light environments for detection, respectively.
It enables the detection of antibacterial properties of photocatalytic printed products under different light intensities, obtains comprehensive and sufficient test data, supports multi-dimensional comparative analysis, and provides reliable antibacterial performance evaluation.
Smart Images
Figure CN224186165U_ABST
Abstract
Description
A device for testing the antibacterial properties of photocatalytic printed products Technical Field
[0001] This utility model relates to the field of antibacterial detection technology, and more specifically, to a device for detecting the antibacterial properties of photocatalytic printed products. Background Technology
[0002] Photocatalytic printed products are innovative products that integrate photocatalysis technology and printing processes. Using nanoscale photocatalysts (such as titanium dioxide) as the core component, they are adhered to the surface of materials such as paper and plastic films through a special printing process. Under light irradiation, the photocatalyst generates highly oxidizing free radicals, achieving the degradation of harmful pollutants in the air such as formaldehyde and toluene, as well as antibacterial and self-cleaning functions. These products are both practical and environmentally friendly, and can be applied to interior decorative wallpaper, advertising posters, packaging materials, and other fields, beautifying the environment, improving air quality, and reducing the risk of bacterial growth. With increasing environmental awareness, photocatalytic printed products are becoming an important direction for the green transformation of the printing industry, showing broad market prospects.
[0003] Currently, the antibacterial testing of photocatalytic printed products involves irradiating the product with a light source to excite the photocatalyst, thereby killing bacteria on the surface. This method is relatively simple and does not allow for comparisons of antibacterial performance under different light source intensities and photocatalytic reaction rates, resulting in insufficient data. Therefore, we propose a device for testing the antibacterial performance of photocatalytic printed products. Summary of the Invention
[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide a photocatalytic printing product antibacterial performance testing device to solve the technical problem that the current testing is relatively simple and it is not convenient to obtain a comparison of antibacterial performance at different photocatalytic reaction rates under different light source intensities, thus resulting in insufficient test data.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a photocatalytic printing product antibacterial performance testing device, comprising a testing mechanism and a positioning mechanism disposed within the testing mechanism. The testing mechanism includes a sample base and a cover. The upper end of the sample base is provided with an array of sample slots. The upper end of the sample base is provided with a mounting rod. The upper end of the mounting rod is provided with a light source adjustment plate. The cover is composed of an opaque half-cover and a glass half-cover. The upper end of the cover is symmetrically provided with support plates. The side end of the support plate is provided with a handle. The upper end of the support plate is provided with a top plate.
[0006] Preferably, the positioning mechanism includes a positioning post, a guide post, and a limiting groove. The positioning post is installed at the center of the inner wall of the upper end of the cover. The positioning post is cylindrical and has a tapered groove at its lower end. The guide post is installed at the upper end of the sample base. The guide post is tapered and its size is adapted to the size of the tapered groove.
[0007] Preferably, the limiting groove is formed on the upper end of the sample base, the limiting groove is arranged in a ring, the size of the limiting groove is adapted to the thickness of the cover, and the lower end of the cover is inserted into the limiting groove.
[0008] Preferably, a light source partition plate is provided inside the housing, the light source partition plate is located between the positioning post and the inner wall of the housing, and the light source partition plate separates the space between the opaque half-cover and the glass half-cover.
[0009] Preferably, an LED light is installed at the lower end of the top plate, and both the top plate and the LED light are arc-shaped along the long axis, with the LED light located directly above the glass half-cover.
[0010] Preferably, the light source adjustment plate is made of optical glass and is located inside the glass half-cover. The top view of the light source adjustment plate is semi-circular. The light source adjustment plate includes several adjustment parts, which are arranged with gradually increasing height along the long axis. A connecting part is provided between adjacent adjustment parts. The adjustment parts and the connecting parts form an arc-shaped stepped shape for the light source adjustment plate. A recessed part is provided at both the upper and lower ends of the adjustment part, and the recessed part partially forms a concave lens for the adjustment part. The concave lens is located directly above the sample slot.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] 1. This utility model designs a light source adjustment plate structure. The light source adjustment plate is an arc-shaped stepped structure. Utilizing optical glass material and an arc-shaped stepped light source adjustment plate, the adjustment parts at different heights have different degrees of light blocking and scattering. Combined with the diverging effect of the concave lens formed by the recessed part, it enables samples at different positions to receive light sources of different intensities. This allows for the testing of the antibacterial performance of photocatalytic printed products under various light intensities. Compared with existing single detection methods, this device can acquire antibacterial performance data under different lighting conditions and intensities, facilitating multi-dimensional comparative analysis. The resulting test data is more comprehensive and sufficient, providing a more reliable basis for evaluating the antibacterial performance of photocatalytic printed products. This solves the problem that current detection methods are relatively singular and inconvenient for comparing the antibacterial performance of different photocatalytic reaction rates under different light source intensities, resulting in insufficient test data.
[0013] 2. This utility model also designs a cover structure, which is composed of an opaque half-cover and a glass half-cover, and uses a light source partition plate to separate the two spaces. This allows the antibacterial performance of photocatalytic printed products to be tested in both dark and light environments, thus achieving a comparison of antibacterial performance under light and dark testing. Attached Figure Description
[0014] Figure 1 is a front view of the structure of this utility model;
[0015] Figure 2 is a cross-sectional view of the present invention;
[0016] Figure 3 is a schematic diagram of the cover structure of this utility model;
[0017] Figure 4 is a schematic diagram of the base structure of this utility model;
[0018] Figure 5 is a front view schematic diagram of the light source adjustment plate of this utility model;
[0019] Figure 6 is a top view of the light source adjustment plate of this utility model.
[0020] Explanation of the numbers in the diagram: 100, Testing mechanism; 101, Sample base; 1011, Sample slot; 102, Cover; 1021, Opaque half-cover; 1022, Glass half-cover; 103, Mounting rod; 104, Support plate; 105, Top plate; 106, Handle; 107, LED light; 108, Light source adjustment plate; 1081, Adjustment part; 1082, Connecting part; 1083, Recessed part; 200, Positioning mechanism; 201, Positioning post; 2011, Conical groove; 202, Guide post; 203, Limiting groove; 204, Light source partition plate. Detailed Implementation
[0021] As shown in Figures 1 to 5, the present invention relates to a photocatalytic printing product antibacterial performance testing device, which includes a testing mechanism 100 and a positioning mechanism 200 disposed within the testing mechanism 100. The testing mechanism 100 includes a sample base 101 and a cover 102. The upper end of the sample base 101 is provided with sample slots 1011 arranged in an array. The upper end of the sample base 101 is provided with a mounting rod 103. The upper end of the mounting rod 103 is provided with a light source adjustment plate 108. The cover 102 is composed of an opaque half-cover 1021 and a glass half-cover 1022. The upper end of the cover 102 is symmetrically provided with a support plate 104. The side end of the support plate 104 is provided with a handle 106. The upper end of the support plate 104 is provided with a top plate 105. This invention enables the testing of the antibacterial properties of photocatalytic printed products under different light intensities through a light source adjustment plate. By comparing the antibacterial performance under light and dark environments with opaque and translucent semi-enclosed structures, it solves the problems of single testing and insufficient data, and can comprehensively obtain multi-dimensional antibacterial performance data, providing strong support for the research and development and application of photocatalytic printed products.
[0022] Specifically, the positioning mechanism 200 includes a positioning post 201, a guide post 202, and a limiting groove 203. The positioning post 201 is installed at the center of the upper inner wall of the cover 102. The positioning post 201 is cylindrical, and a tapered groove 2011 is formed at its lower end. The guide post 202 is installed at the upper end of the sample base 101. The guide post 202 is tapered, and its size is adapted to the size of the tapered groove 2011. When the cover 102 is installed on the sample base 101, because the lower opening of the positioning post 201 is larger and the upper opening of the guide post 202 is smaller, the positioning post 201 and the guide post 202 can guide the cover 102. When the guide post 202 is completely located within the tapered groove 2011 of the positioning post 201, it can limit the position of the cover 102.
[0023] Furthermore, a limiting groove 203 is formed on the upper end of the sample base 101. The limiting groove 203 is annular and its size is adapted to the thickness of the cover 102. The lower end of the cover 102 is inserted into the limiting groove 203. When the cover 102 is installed, the lower end of the cover 102 can be inserted into the limiting groove 203 for further limiting, thereby ensuring the stability of the cover 102.
[0024] It is worth noting that a light source partition plate 204 is provided inside the housing 102. The light source partition plate 204 is located between the positioning post 201 and the inner wall of the housing 102, and the light source partition plate 204 spatially separates the opaque half-cover 1021 and the glass half-cover 1022. During the antibacterial performance testing of photocatalytic printed products, the samples of photocatalytic printed products can be located inside the opaque half-cover 1021 and the glass half-cover 1022, respectively. During the testing process, the opaque half-cover 1021 can isolate the light source, while the light source can illuminate the glass half-cover 1022, allowing the antibacterial performance of the photocatalytic printed products to be tested in both dark and light environments, thus enabling preliminary comparative testing.
[0025] It is worth mentioning that an LED light 107 is installed at the lower end of the top plate 105. Both the top plate 105 and the LED light 107 are arc-shaped along their long axis, and the LED light 107 is located directly above the glass half-cover 1022. The LED light 107 emits light to irradiate the photocatalytic printed products inside the glass half-cover 1022, causing the photocatalytic printed products to undergo a photocatalytic reaction for sterilization.
[0026] It is worth noting that the light source adjustment plate 108 is made of optical glass. The light source adjustment plate 108 is located inside the glass half-cover 1022. The top view of the light source adjustment plate 108 is semi-circular. The light source adjustment plate 108 includes several adjustment parts 1081. The height of the several adjustment parts 1081 gradually increases along the long axis. A connecting part 1082 is provided between adjacent adjustment parts 1081. The several adjustment parts 1081 and the connecting part 1082 form an arc-shaped stepped shape for the light source adjustment plate 108. The upper and lower ends of the adjustment parts 1081 are provided with recesses 1083. The recesses 1083 partially form concave lenses for the adjustment parts 1081. The concave lenses are located directly above the sample slot 1011. The arc-shaped stepped light source adjustment plate 108 positions several adjustment parts 1081 at different heights. When the height is higher, it can increase the blocking and scattering of light, and when the height is lower, it can reduce the blocking and scattering of light. This allows photocatalytic printed products at different positions to be irradiated by light sources of different intensities. Secondly, the concave lens formed by the recessed part 1083 can diverge the light. The farther away from the light source, the greater the degree of light divergence, and the weaker the light intensity reaching the detection position. Conversely, when the distance from the light source is closer, the degree of light divergence is smaller, and the light intensity received by the detection position is relatively stronger. This enables the antibacterial performance testing of photocatalytic printed products under different light intensities.
[0027] Working Principle: This embodiment provides a device for testing the antibacterial properties of photocatalytic printed products. In use, first, a sample of the photocatalytic printed product is placed in the sample tank 1011. Then, a bacterial solution containing bacteria is dropped onto the photocatalytic printed product. Next, a glass slide is placed on top of the bacterial solution to cover it and prevent spillage or external interference during testing. The cover 102 is then lifted using handle 106 and installed on the sample base 101. During installation, because the lower opening of the positioning post 201 is larger than the upper opening of the guide post 202, the guide post 202 can be inserted into the conical groove 2011 at the lower end of the positioning post 201, providing guidance for the installation of the cover 102 and ensuring accurate placement. When the guide post 202... When the 02 is completely within the conical groove 2011, the cover 102 is initially positioned. Simultaneously, the lower end of the cover 102 is inserted into the annular limiting groove 203 on the upper end of the sample base 101. The limiting groove 203 is adapted to the thickness of the cover 102, further enhancing the stability of the cover 102 after installation and ensuring that the cover 102 will not shift during testing. The cover 102 consists of an opaque half-cover 1021 and a glass half-cover 1022, with a light source partition plate 204 inside to separate the two spaces. During testing, the photocatalytic printed product sample is placed within the opaque half-cover 1021 and the glass half-cover 1022 respectively. The opaque half-cover 1021 isolates external light sources, creating darkness for the sample. The glass half-cover 1022 provides an environment where light can pass through, offering illumination for the sample. This allows for preliminary comparative testing of the sample's antibacterial performance under both dark and light conditions. An LED light 107, mounted at the lower end of the top plate 105, is arc-shaped along its long axis and positioned directly above the glass half-cover 1022. When the LED light 107 is turned on, its emitted light can illuminate the photocatalytic printed material inside the glass half-cover 1022, activating the photocatalyst and inducing a photocatalytic reaction that sterilizes the surface bacteria. A light source adjustment plate 108, located inside the glass half-cover 1022, is made of optical glass and has a semi-circular shape when viewed from above. It consists of several adjustment sections 108 whose height gradually increases along the long axis. The adjusting part 1081 and the connecting part 1082 form an arc-shaped stepped shape. The recessed parts 1083 at the upper and lower ends of the adjusting part 1081 partially constitute concave lenses, and these concave lenses are located directly above the sample groove 1011. This structure allows the adjusting parts 1081 at different heights to block and scatter light to varying degrees. Higher adjusting parts 1081 enhance light blocking and scattering, while lower ones reduce blocking and scattering. This allows photocatalytic printed products at different positions to receive light sources of varying intensities. Furthermore, the concave lenses diverge the light; the farther away from the light source, the greater the divergence, and the weaker the light intensity received at the detection position. Conversely, the closer to the light source, the smaller the divergence, and the stronger the light intensity received at the detection position. Therefore…This study achieved the testing of the antibacterial properties of photocatalytic printed products under different light intensities. After testing under various light conditions and intensities, the products were rinsed with a rinsing solution and samples were taken. By observing, statistically analyzing, and statistically summarizing indicators such as bacterial residue and the number of surviving bacteria on different samples, the antibacterial performance data of the photocatalytic printed products under different conditions were obtained. This comprehensive evaluation of their antibacterial performance provides reliable data support for the research and development and application of photocatalytic printed products.
[0028] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.
Claims
1. A device for detecting antibacterial properties of a photocatalytic printed article, characterized by, The device includes a testing mechanism (100) and a positioning mechanism (200) installed within the testing mechanism (100). The testing mechanism (100) includes a sample base (101) and a cover (102). The upper end of the sample base (101) is provided with sample slots (1011). The upper end of the sample base (101) is provided with a mounting rod (103). The upper end of the mounting rod (103) is provided with a light source adjustment plate (108). The cover (102) is composed of an opaque half-cover (1021) and a glass half-cover (1022). The upper end of the cover (102) is symmetrically provided with support plates (104). The side end of the support plate (104) is provided with a handle (106). The upper end of the support plate (104) is provided with a top plate (105).
2. The device for detecting the antibacterial performance of a photocatalytic printing product according to claim 1, wherein The positioning mechanism (200) includes a positioning post (201), a guide post (202), and a limiting groove (203). The positioning post (201) is installed at the center of the inner wall of the upper end of the cover (102). The positioning post (201) is cylindrical and has a tapered groove (2011) at its lower end. The guide post (202) is installed at the upper end of the sample base (101). The guide post (202) is tapered and its size is adapted to the size of the tapered groove (2011).
3. The device for detecting the antibacterial performance of a photocatalytic printing product according to claim 2, characterized in that, The limiting groove (203) is formed on the upper end of the sample base (101). The limiting groove (203) is arranged in a ring shape. The size of the limiting groove (203) is adapted to the thickness of the cover (102). The lower end of the cover (102) is inserted into the limiting groove (203).
4. The device for detecting the antibacterial performance of a photocatalytic printing product according to claim 3, characterized in that, A light source partition plate (204) is provided inside the housing (102). The light source partition plate (204) is located between the positioning post (201) and the inner wall of the housing (102). The light source partition plate (204) separates the opaque half-cover (1021) and the glass half-cover (1022) space.
5. The device for detecting the antibacterial performance of a photocatalytic printing product according to claim 4, characterized in that, An LED light (107) is installed at the lower end of the top plate (105). Both the top plate (105) and the LED light (107) are arc-shaped along the long axis. The LED light (107) is located directly above the glass half-cover (1022).
6. The device for detecting the antibacterial performance of a photocatalytic printing product according to claim 5, wherein The light source adjustment plate (108) is made of optical glass and is located inside the glass half-cover (1022). The top view of the light source adjustment plate (108) is semi-circular. The light source adjustment plate (108) includes several adjustment parts (1081). The height of the several adjustment parts (1081) gradually increases along the long axis. A connecting part (1082) is provided between adjacent adjustment parts (1081). The several adjustment parts (1081) and the connecting part (1082) form an arc-shaped stepped shape for the light source adjustment plate (108). The upper and lower ends of the adjustment parts (1081) are provided with recesses (1083). The recesses (1083) partially form concave lenses for the adjustment parts (1081). The concave lenses are located directly above the sample slot (1011).