Annular illumination sterilization device capable of exciting photocatalyst

Abstract

The utility model relates to the technical field of machinery, and discloses an annular lighting sterilization device capable of exciting a photocatalyst, which comprises a shell, a cover body is fixedly connected to the top end of the shell, an outlet filter screen is slidably connected in the cover body, a sterilization mechanism is arranged in the shell, a dismounting mechanism is arranged in the cover body, and the dismounting mechanism is arranged in the shell. The sterilization mechanism comprises a fixing plate, the exterior of the fixing plate is fixedly connected to the interior of the shell, a photocatalyst carrier is fixedly connected to the top end of the fixing plate, two air channels are fixedly connected to the interior of the shell, and a fan is arranged in the shell. According to the utility model, the LED lamps outside the illumination part emit light, and by virtue of the annular design and uniform distribution, uniform illumination is provided for the photocatalyst carrier, and the photocatalyst is efficiently excited, so that the photocatalyst carrier generates catalytic reaction and decomposes organic pollutants and harmful microorganisms in the air, and the efficient air sterilization and purification effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, and in particular to a ring-shaped lighting sterilization device that can activate photocatalysts. Background Technology

[0002] In modern life, air quality is closely related to people's lives, work, and health. As a result, air purification devices are widely used in homes, offices, hospitals, and industrial sites. Their function is to remove various pollutants from the air, such as dust, bacteria, viruses, formaldehyde, and odors. These pollutants are extremely harmful, causing lung diseases, infectious diseases, and posing a high risk of cancer. This device achieves efficient interception, separation, killing, and decomposition of air pollutants, thereby purifying the air.

[0003] An air purifier (using photocatalysis) mainly consists of a photocatalytic filter, a light source, and a housing. The photocatalytic filter is crucial and is generally composed of a carrier loaded with materials such as titanium dioxide. The light source is usually an ultraviolet lamp, which provides the light energy required for the reaction. The housing protects the internal components and supports the overall structure. When the device is in operation, the ultraviolet light irradiates the photocatalytic filter, causing the photocatalyst to generate electron-hole pairs. These active particles react with water and oxygen in the air to generate highly oxidizing hydroxyl radicals. These radicals can oxidize pollutants such as formaldehyde, bacteria, and viruses in the air, decomposing them into carbon dioxide and water, thereby purifying the air and creating a fresh environment for people.

[0004] Some current air purification devices suffer from uneven lighting, which prevents some areas of the photocatalyst from being fully activated, resulting in a significant reduction in purification efficiency and high energy consumption, affecting user experience and long-term benefits. To address these issues, a ring-shaped lighting sterilization device that can activate the photocatalyst is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a ring-shaped lighting sterilization device that can activate photocatalysts, aiming to improve the problems of existing technologies that cannot provide uniform illumination to improve photocatalyst activation efficiency and achieve efficient activation of photocatalysts, while also consuming a lot of energy.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A ring-shaped lighting sterilization device capable of activating photocatalysis includes a housing, a cover fixedly connected to the top of the housing, an outlet filter slidably connected inside the cover, a sterilization mechanism inside the housing, a disassembly mechanism inside the cover, a fixing plate fixedly connected to the outside of the fixing plate inside the housing, a photocatalyst carrier fixedly connected to the top of the fixing plate, two air ducts fixedly connected inside the housing, a fan inside the housing, an lighting component at the bottom of the outlet filter, multiple LEDs fixedly connected to the bottom of the lighting component and arranged in a ring array, an assembly assembly outside the lighting component, and two support legs fixedly connected to the outside of the housing.

[0008] Through the above technical solution: the device uses a shell as the basic frame, with a cover connected to the top, together forming a protective outer shell to protect the internal components. The outlet filter inside the cover is slidable, facilitating the discharge of purified air and subsequent cleaning. The shell contains a sterilization mechanism, which uses a fixing plate to fix the photocatalyst carrier, and is equipped with two air ducts and a fan to provide the core power and reaction conditions for air purification. The lighting component below the outlet filter is equipped with LED lights distributed in a ring array, which can effectively stimulate the photocatalyst. The assembly components outside the lighting component are easy to install and fix, and the two legs on the outside of the shell ensure that the device is placed stably. The overall design is compact, and all components work together to lay the foundation for achieving efficient air sterilization and purification.

[0009] As a further description of the above technical solution:

[0010] The assembly includes a fixing angle, which is externally fixedly connected to the outside of the lighting component, and internally threaded with a fixing screw.

[0011] Through the above technical solution: the fixing angle in the assembly component is fixed to the outside of the lighting component and is tightly connected to the lighting component to ensure the stability of the lighting component position. The fixing screw is threadedly connected to the fixing angle, which can securely install the lighting component in the device. When maintenance or replacement of the lighting component is required, it can be easily disassembled by turning the fixing screw, which greatly improves the convenience of installation and maintenance of the lighting component.

[0012] As a further description of the above technical solution:

[0013] The outlet filter screen is fixedly connected to two connecting blocks, and an air inlet filter screen is fixedly connected to the outside of each of the two connecting blocks.

[0014] The above technical solution involves connecting two connecting blocks to the outside of the outlet filter, with each connecting block connected to the inlet filter. This structure integrates the inlet and outlet filters, facilitating installation and disassembly. The inlet filter can perform preliminary filtration of the air entering the device, blocking large particles and reducing the burden on subsequent purification components, thus ensuring purification effectiveness.

[0015] As a further description of the above technical solution:

[0016] The external thread of the fixing screw is connected to the inside of the outlet filter screen, and the bottom ends of the two inlet filters are in contact with the top ends of the two air ducts.

[0017] The above technical solution involves fixing the lighting components to the outlet filter by threaded connection, ensuring that the bottom of the inlet filter contacts the top of the duct, allowing air to flow smoothly into the duct, pass through the inlet filter for preliminary filtration, and then enter the device for purification. This optimizes the airflow path and improves purification efficiency.

[0018] As a further description of the above technical solution:

[0019] The disassembly and assembly mechanism includes a fixing block, the top of which is fixedly connected to the bottom of the outlet filter screen. A limit block is slidably connected inside the fixing block. A telescopic column is fixedly connected to the front end of the limit block. A spring is sleeved on the outside of the telescopic column. A sliding block is fixedly connected to the top of the limit block. A pull rod is fixedly connected to the outside of the sliding block.

[0020] The above technical solution involves a fixed block connected to the bottom of the outlet filter screen in the disassembly and assembly mechanism, and a limiting block sliding within the fixed block. In conjunction with the telescopic column and spring, the limiting block can be controlled to slide when the pull rod is pulled, thereby enabling the disassembly of the outlet filter screen and related components. After the pull rod is released, the spring can reset the limiting block, facilitating the installation of the outlet filter screen and providing a convenient operating method for the maintenance of the device.

[0021] As a further description of the above technical solution:

[0022] The top of the cover is provided with a groove, and the outside of the sliding block is slidably connected to the inside of the groove;

[0023] Through the above technical solution: the sliding groove opened at the top of the cover cooperates with the sliding block. When the pull rod is pulled to drive the sliding block to slide in the sliding groove, the movement of the limit block can be precisely controlled, making the disassembly and installation of the outlet filter screen smoother and more precise, and improving the controllability of the device maintenance operation.

[0024] As a further description of the above technical solution:

[0025] The limiting block is externally slidably connected to the inside of the cover, and the front end of the telescopic column is fixedly connected to the inside of the cover.

[0026] The above technical solution ensures the stability and reliability of the sliding of the limiting block inside the cover, and the front end of the telescopic column is fixed inside the cover. This allows the entire disassembly and assembly mechanism to accurately limit or unlock the outlet filter screen during operation, ensuring that the device structure is stable and easy to maintain.

[0027] As a further description of the above technical solution:

[0028] One end of the spring is fixedly connected to the front end of the limiting block, and the other end of the spring is fixedly connected to the inside of the cover.

[0029] The above technical solution involves connecting one end of a spring to the front end of a limiting block and the other end to the inside of the cover. The elasticity of the spring provides the limiting block with the power for automatic reset. During the installation of the outlet filter, the limiting block can quickly slide into the fixing block under the action of the spring, achieving automatic fixing of the outlet filter, simplifying the installation process and improving maintenance efficiency.

[0030] This utility model has the following beneficial effects:

[0031] 1. In this utility model, the operator starts the fan, the fan runs and draws air, the air flows into the housing from the air duct and flows through the photocatalyst carrier. At the same time, the LED light outside the lighting component emits light. With its ring design and uniform distribution, it provides uniform illumination to the photocatalyst carrier, which efficiently stimulates the photocatalyst to produce a catalytic reaction, decomposes organic pollutants and harmful microorganisms in the air, and achieves a highly efficient air sterilization and purification effect.

[0032] 2. In this utility model, when air circulates in the duct, it first passes through the inlet filter to initially filter large particles of impurities, ensuring the purification effect. After a period of use, dust easily accumulates on the inlet and outlet filters, obstructing airflow. The operator pulls the lever, causing the sliding block to slide in the cover groove, so that the limiting block slides out from the fixed block. The outlet filter, lighting components, and inlet filter can then be disassembled. After cleaning and maintenance, the outlet filter is slid into the cover, and the limiting block slides into the fixed block with the help of the arc design, and is fixed by the spring. This facilitates cleaning and maintenance work and greatly improves maintenance efficiency. Attached Figure Description

[0033] Figure 1 This is a three-dimensional schematic diagram of a ring-shaped lighting sterilization device capable of activating photocatalysts, as proposed in this utility model.

[0034] Figure 2 This is a schematic diagram of the structure of the fixing plate of a ring-shaped lighting sterilization device that can excite photocatalysts, as proposed in this utility model.

[0035] Figure 3 This is a schematic diagram of the outlet filter of a ring-shaped lighting sterilization device capable of activating photocatalysts, as proposed in this utility model.

[0036] Figure 4 This is a schematic diagram of the connecting block of a ring-shaped lighting sterilization device capable of activating photocatalysts, as proposed in this utility model.

[0037] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0038] Legend:

[0039] 1. Housing; 2. Cover; 3. Outlet filter; 4. Sterilization mechanism; 41. Fixing plate; 42. Fan; 43. Photocatalyst carrier; 44. Air duct; 45. Lighting components; 46. LED light; 47. Assembly components; 471. Fixing angle; 472. Fixing screw; 48. Support leg; 5. Connecting block; 6. Inlet filter; 7. Disassembly and assembly mechanism; 71. Fixing block; 72. Limiting block; 73. Telescopic column; 74. Spring; 75. Sliding block; 76. Pull rod. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] Reference Figures 1 to 3 This utility model provides an embodiment of a ring-shaped lighting sterilization device that can activate photocatalysis, including a housing 1, a cover 2 fixedly connected to the top of the housing 1, and an outlet filter 3 slidably connected inside the cover 2. The housing 1 serves as the basic frame of the entire device, effectively protecting the internal components and ensuring the normal operation of the device. The cover 2 is tightly connected to the housing 1, together forming the external protective structure of the device. The outlet filter 3 is slidably connected inside the cover 2. The sliding connection of the outlet filter 3 inside the cover 2 provides convenient conditions for subsequent disassembly and cleaning. The outlet filter 3 allows purified air to be discharged smoothly while blocking residual small particles or impurities in the air, ensuring that the discharged air meets a high purification standard and providing users with a clean air environment.

[0042] The shell 1 is equipped with a sterilization mechanism 4, which is the core part of the entire device to achieve air sterilization and purification. The sterilization mechanism 4 effectively removes harmful substances in the air and ensures air quality through the coordinated work of a series of components. The sterilization mechanism 4 includes a fixing plate 41, which is fixedly connected to the inside of the shell 1. The fixing plate 41 plays a role in stabilizing and supporting the air. A photocatalyst carrier 43 is fixedly connected to the top of the fixing plate 41. The photocatalyst carrier 43 is a key component to realize the photocatalytic reaction. Under the irradiation of a specific light source, the photocatalyst carrier 43 can decompose organic pollutants and harmful microorganisms in the air, such as formaldehyde, bacteria, and viruses, thereby achieving the purpose of purifying the air.

[0043] The fixed connection between the photocatalyst carrier 43 and the fixed plate 41 ensures that the photocatalyst carrier 43 can function stably during device operation. Two air ducts 44 are fixedly connected inside the housing 1. The air ducts 44 provide specific channels for air flow, guiding air to flow through the photocatalyst carrier 43 and other purification components along a predetermined path, ensuring that the air can fully contact the purification components and improve purification efficiency. At the same time, the design of the air ducts 44 also helps to reduce the resistance during air flow and reduce the energy consumption of the fan 42. The fan 42 is installed inside the housing 1. The fan 42 is the power source that drives the air to flow inside the device. When the operator starts the fan 42, the rotation of the fan 42 will generate a strong suction force, drawing air from the air ducts 44 into the interior of the housing 1 and allowing the air to flow through the photocatalyst carrier 43, providing the necessary air flow conditions for the photocatalyst carrier 43 to function.

[0044] An illumination component 45 is installed at the bottom of the outlet filter 3. This component provides the light source required for the excitation of the photocatalyst carrier 43. Its position relative to the outlet filter 3 ensures that the light source directly illuminates the photocatalyst carrier 43, guaranteeing the smooth progress of the photocatalytic reaction. Multiple LEDs 46 are fixedly connected to the bottom of the illumination component 45 and arranged in a circular array. This circular array design enables efficient excitation of the photocatalyst carrier 43 and uniform illumination. The circular design ensures that all parts of the photocatalyst carrier 43 receive sufficient light, thereby improving the photocatalytic efficiency. The catalyst has a high catalytic efficiency, which can more effectively decompose pollutants in the air. The lighting component 45 is provided with an assembly component 47 on its exterior. The assembly component 47 facilitates the installation and fixation of the lighting component 45. The assembly component 47 allows the lighting component 45 to be stably installed in the device. At the same time, it can be easily disassembled and reassembled when maintenance or replacement is required. Two support legs 48 are fixedly connected to the exterior of the housing 1. The two support legs 48 are fixedly connected to the exterior of the housing 1, which provides stable support for the device, allowing it to be placed stably on various flat surfaces, and preventing the device from shaking during operation, which could affect the purification effect or damage the internal components.

[0045] Assembly component 47 includes a fixing angle 471, which is externally fixed to the outside of the lighting component 45. The fixing angle 471 is an important component of assembly component 47, securely connecting the lighting component 45 to the outlet filter 3, ensuring the lighting component 45 remains stable within the device and does not loosen or shift during operation. The fixing angle 471 has an internal threaded connection to a fixing screw 472. The fixing screw 472, through its threaded connection with the fixing angle 471, further strengthens the fixing effect of the lighting component 45. This connection method not only allows the lighting component 45 to be securely installed within the device, but also allows for easy disassembly by unscrewing the fixing screw 472 when necessary. Two connecting blocks 5 are fixedly connected to the outside of the filter screen 3. An air inlet filter screen 6 is fixedly connected to the outside of each connecting block 5. The connecting blocks 5 firmly connect the air inlet filter screen 6 and the outlet filter screen 3 together, so that the air inlet filter screen 6 can be stably installed in the device and play its role in preliminary air filtration. The external thread of the fixing screw 472 is connected to the inside of the outlet filter screen 3. The bottom end of the two air inlet filters 6 contacts the top end of the two air ducts 44. The threaded connection between the fixing screw 472 and the outlet filter screen 3 realizes the tight connection between the lighting component 45 and the outlet filter screen 3. At the same time, the contact between the air inlet filter screen 6 and the air duct 44 ensures that the air can flow smoothly from the air duct 44 into the device and pass through the preliminary filtration of the air inlet filter screen 6 first.

[0046] Specifically, this ring-shaped lighting sterilization device uses a robust shell 1 as its basic structure, with a cover 2 tightly connected to its top. Together, they create a tight external protection system, effectively resisting interference from external dust, moisture, and other factors, ensuring the normal operation of the internal precision components. Inside the cover 2, the outlet filter 3 adopts a clever sliding connection design. This design not only allows purified fresh air to be discharged without obstruction, but also allows the filter to be easily pulled out for convenient cleaning when impurities accumulate, greatly improving the filter's lifespan and the sustainability of the purification effect. (Fixed plate...) 41 is firmly fixed inside the housing 1. Once the fan 42 is started, it guides the air to flow in orderly along the air duct 44 with strong suction. The design of the air duct 44 optimizes the airflow path, so that the air can fully and evenly contact the photocatalyst carrier 43. Below the outlet filter 3, multiple LED lights 46 are arranged in a ring array at the bottom of the lighting component 45. The multiple LED lights 46 accurately provide the appropriate excitation light source for the photocatalyst carrier 43. The ring layout ensures that every part of the photocatalyst carrier 43 can be bathed in sufficient and uniform light, which greatly improves the catalytic efficiency.

[0047] The lighting component 45 powerfully decomposes harmful pollutants in the air. Through the assembly component 47, namely the tight fit between the fixing angle 471 and the fixing screw 472, it is firmly connected to the outlet filter 3, ensuring the stability of the lighting component 45 during daily operation. When maintenance or replacement is required, the fixing screw 472 can be easily unscrewed to complete the operation. The outlet filter 3 is connected to the inlet filter 6 through the connecting block 5. The inlet filter 6 is in precise contact with the top of the air duct 44, allowing the air to undergo preliminary filtration when it enters the device, reducing the pressure of subsequent purification. The two support feet 48 on the outside of the housing 1 ensure that the device can be placed stably on various flat surfaces, avoiding shaking during operation that would affect the purification efficiency.

[0048] Reference Figure 1 , Figure 4 and Figure 5 The disassembly and assembly mechanism 7 includes a fixing block 71. The top of the fixing block 71 is fixedly connected to the bottom of the outlet filter screen 3. As part of the disassembly and assembly mechanism 7, the fixing block 71 provides an important connection point for fixing and disassembling the outlet filter screen 3. The fixed connection between the fixing block 71 and the outlet filter screen 3 ensures that the outlet filter screen 3 can be stably installed in the cover body 2 when the device is running normally. The inside of the fixing block 71 is slidably connected to a limit block 72. The front end of the limit block 72 is fixedly connected to a telescopic column 73. The outside of the telescopic column 73 is fitted with a spring 74. The limit block 72, the telescopic column 73 and the spring 74 together form a telescopic limit structure. When it is necessary to disassemble the outlet filter screen 3, the limit block 72 can slide out from the fixing block 71 by external force, while the spring 74 plays a role in buffering and resetting during disassembly and installation.

[0049] A sliding block 75 is fixedly connected to the top of the limiting block 72, and a pull rod 76 is fixedly connected to the outside of the sliding block 75. A groove is opened at the top of the cover 2, and the outside of the sliding block 75 is slidably connected to the inside of the groove. The setting of the sliding block 75 and the pull rod 76 allows the operator to easily control the sliding of the limiting block 72. By pulling the pull rod 76, the sliding block 75 is driven to slide in the groove of the cover 2, thereby realizing the extension and retraction of the limiting block 72, achieving the purpose of disassembling and installing the outlet filter screen 3. The outside of the limiting block 72 is slidably connected to the inside of the cover 2, the front end of the telescopic column 73 is fixedly connected to the inside of the cover 2, one end of the spring 74 is fixedly connected to the front end of the limiting block 72, and the other end of the spring 74 is fixedly connected to the inside of the cover 2. This structural design ensures that the limiting block 72 can slide flexibly in the cover 2, and at the same time, the elasticity of the spring 74 allows the limiting block 72 to automatically reset when the outlet filter screen 3 is installed, ensuring that the outlet filter screen 3 is firmly fixed.

[0050] Specifically, the disassembly and assembly mechanism 7 is meticulously designed for convenient maintenance. The fixing block 71 is securely connected to the bottom of the outlet filter screen 3. The outlet filter screen 3, the limiting block 72 inside the cover 2, the telescopic column 73, and the sleeved spring 74 together constitute a flexible and reliable telescopic limiting structure. The sliding block 75 at the top of the limiting block 72 is connected to the pull rod 76. The slide groove at the top of the cover 2 provides a smooth sliding track for the sliding block 75. When the operator pulls the pull rod 76, the sliding block 75 moves smoothly in the slide groove, driving the limiting block 72 to slide out from the fixing block 71, easily realizing the disassembly of the outlet filter screen 3. During installation, the outlet filter screen 3 is aligned with the cover 2 and slid in. The arc design of the limiting block 72 can cleverly avoid obstacles and smoothly enter the predetermined position. Then, the spring 74 quickly pushes the limiting block 72 to automatically reset, tightly locking the fixing block 71 and firmly fixing the outlet filter screen 3. The entire maintenance operation is simple and efficient, greatly improving the convenience of maintenance operations.

[0051] Working principle: When the operator needs to use the device to sterilize the air, by starting the fan 42, the rotation of the fan 42 will draw air from the air duct 44 into the interior of the housing 1, and make the air flow through the photocatalyst carrier 43. At this time, the photocatalyst carrier 43 will produce a catalytic reaction due to the illumination of the LED light 46 on the outside of the lighting component 45, decomposing organic pollutants and harmful microorganisms in the air. Through the ring design and uniform distribution of the LED light 46, the efficient excitation of the photocatalyst carrier 43 and uniform illumination are achieved.

[0052] When gas flows inside the air duct 44, it first passes through the inlet filter 6 for preliminary filtration, preventing large particles from entering the housing 1 and affecting the air purification effect. The outlet filter 3 allows purified air to be discharged. Over time, dust accumulates on the outside of the inlet filter 6 and the outlet filter 3, affecting airflow. At this time, the operator can pull the lever 76, causing the sliding block 75 to slide inside the cover 2, thereby causing the limiting block 72 to slide out from inside the fixing block 71. At this time, the outlet filter 3 and the lighting component 45 can be disassembled from the device. Simultaneously, the outlet filter 3 will connect to the top of the air duct 44 via the connecting block 5. The outlet filter 3 and the inlet filter 6 can be removed to facilitate cleaning, and also to facilitate maintenance and replacement of the lighting components 45 and LED lights 46. After cleaning and maintenance, the outlet filter 3 is slid into the inside of the cover 2 by aligning the fixing block 71 with the designated position inside the cover 2. At this time, the arc design of the limiting block 72 ensures the normal sliding of the fixing block 71. When the outlet filter 3 is completely slid into the inside of the cover 2, the spring 74 will automatically push the limiting block 72 into the inside of the fixing block 71, thereby fixing the position of the outlet filter 3. Through quick disassembly and assembly, it is convenient to clean and maintain the outlet filter 3, the inlet filter 6 and the lighting components 45 as a whole, improving maintenance efficiency.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ring-shaped illumination sterilization device capable of activating photocatalysis, comprising a housing (1), characterized in that: The top of the housing (1) is fixedly connected to a cover (2), and an outlet filter (3) is slidably connected inside the cover (2). A sterilization mechanism (4) is provided inside the housing (1), and a disassembly mechanism (7) is provided inside the cover (2). The sterilization mechanism (4) includes a fixing plate (41), which is fixedly connected to the outside of the housing (1) and a photocatalyst carrier (43) is fixedly connected to the top of the fixing plate (41). Two air ducts (44) are fixedly connected inside the housing (1). A fan (42) is provided inside the housing (1). A lighting component (45) is provided at the bottom of the outlet filter (3). Multiple LED lights (46) are fixedly connected to the bottom of the lighting component (45) and distributed in a ring array. An assembly component (47) is provided outside the lighting component (45). Two support legs (48) are fixedly connected to the outside of the housing (1).

2. The ring-shaped illumination sterilization device capable of activating photocatalysis according to claim 1, characterized in that: The assembly component (47) includes a fixing angle (471), which is externally fixedly connected to the outside of the lighting component (45), and the fixing angle (471) is internally threaded with a fixing screw (472).

3. The annular illumination sterilization device capable of activating photocatalysis according to claim 2, characterized in that: The outlet filter (3) is fixedly connected to two connecting blocks (5), and the two connecting blocks (5) are fixedly connected to the outside of the inlet filter (6).

4. The annular illumination sterilization device capable of activating photocatalysis according to claim 3, characterized in that: The external thread of the fixing screw (472) is connected to the inside of the outlet filter (3), and the bottom ends of the two inlet filters (6) are in contact with the top ends of the two air ducts (44).

5. The annular illumination sterilization device capable of activating photocatalysis according to claim 1, characterized in that: The disassembly and assembly mechanism (7) includes a fixing block (71), the top of which is fixedly connected to the bottom of the outlet filter (3). A limiting block (72) is slidably connected inside the fixing block (71). A telescopic column (73) is fixedly connected to the front end of the limiting block (72). A spring (74) is sleeved on the outside of the telescopic column (73). A sliding block (75) is fixedly connected to the top of the limiting block (72). A pull rod (76) is fixedly connected to the outside of the sliding block (75).

6. The annular illumination sterilization device capable of activating photocatalysis according to claim 5, characterized in that: The top of the cover (2) is provided with a sliding groove, and the outside of the sliding block (75) is slidably connected to the inside of the sliding groove.

7. The annular illumination sterilization device capable of activating photocatalysis according to claim 5, characterized in that: The limiting block (72) is externally slidably connected to the inside of the cover (2), and the front end of the telescopic column (73) is fixedly connected to the inside of the cover (2).

8. The annular illumination sterilization device capable of activating photocatalysis according to claim 5, characterized in that: One end of the spring (74) is fixedly connected to the front end of the limiting block (72), and the other end of the spring (74) is fixedly connected to the inside of the cover (2).

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