An automatic disinfection biosafety cabinet

Abstract

The application discloses an automatic disinfection biosafety cabinet and belongs to the technical field of laboratory equipment. Mainly includes: safety cabinet body, the safety cabinet body is equipped with an observation window, a driving assembly is installed in the safety cabinet body, the driving assembly includes a rotating rod rotatably installed in the safety cabinet body, a driving motor is installed in the safety cabinet body, a first bevel gear is installed at the output end of the driving motor, a second bevel gear meshing with the first bevel gear is installed on the rotating rod, and a cleaning assembly is installed in the safety cabinet body. The automatic disinfection biosafety cabinet drives the first bevel gear to rotate through the driving motor, transmits power to the rotating rod through the meshing of the second bevel gear, drives the toothed plate to reciprocate when the half gear on the rotating rod meshes with the toothed plate, so that the wiping plate wipes the surface of the observation window back and forth in the sliding process, and the automatic cleaning function is realized.

Description

Technical Field

[0001] This application relates to the field of laboratory equipment technology, specifically to an automatic sterilization biosafety cabinet. Background Technology

[0002] Biosafety cabinets are laboratory equipment used to handle biohazardous substances and protect personnel, the environment, and samples. They have airflow circulation and filtration systems to create a sterile environment. Classified into three categories based on filtration methods and levels, they prevent biocontamination and are important in medical, scientific research, and other fields.

[0003] For example, patent CN220159994U discloses a biosafety cabinet, which includes a cabinet body, a placement plate, a wiping mechanism, a slide, and a drive mechanism. This invention features an automatically wiping and disinfecting placement plate, preventing hand contamination from bacteria inside the cabinet during manual wiping. It only requires spraying disinfectant, and the drive mechanism moves the wiping mechanism back and forth, making it simple to operate, reducing labor intensity, and the wiping mechanism is easy to disassemble and clean, thus offering high practicality.

[0004] When the aforementioned patented biosafety cabinet is used for a long period of time, volatile chemical reagents (such as alcohol, formaldehyde, etc.) used in experiments inside the biosafety cabinet may evaporate and condense on the viewing window surface, forming stains. Alternatively, bacteria, fungi, and other microorganisms that come into contact with the window during the experimental operation may adhere to the viewing window surface. If cleaning is not timely, bacterial colonies may form, which increases the risk of biological contamination and affects transparency. When cleaning, users need to manually reach into the cabinet because the transparent window lacks an automatic cleaning mechanism. This not only increases the risk of hand contamination but also makes it difficult to thoroughly remove stains from high places or deep places, resulting in poor cleaning effect and affecting the clarity of experimental observation. Therefore, it is necessary to provide an automatically disinfecting biosafety cabinet to solve the above problems.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0006] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide an automatic disinfection biosafety cabinet, which solves the problem that the lack of an automatic cleaning mechanism in the transparent window of the biosafety cabinet leads to easy hand contamination and incomplete cleaning during manual cleaning, thereby affecting the clarity of experimental observation and increasing the risk of biological contamination.

[0007] The technical solution adopted by this application to solve its technical problem is: an automatic disinfection biosafety cabinet, comprising:

[0008] A safety cabinet, wherein the safety cabinet is provided with an observation window;

[0009] A drive assembly is installed inside the safety cabinet. The drive assembly includes a rotating rod rotatably installed inside the safety cabinet. A drive motor is installed inside the safety cabinet. A first bevel gear is installed at the output end of the drive motor. A second bevel gear that meshes with the first bevel gear is installed on the rotating rod.

[0010] A cleaning assembly, installed within the safety cabinet, includes...

[0011] Two sets of assembly boxes, each containing two fixed springs. Each spring has a limit block mounted on one end, and a limit plate mounted on the limit block. The front ends of both the limit block and the limit plate extend outside the assembly box and are each equipped with a toothed plate. Half gears capable of meshing with the toothed plates are mounted on both sides of the rotating rod body. An intermediate block is mounted on the toothed plate, and an assembly plate is mounted on the intermediate block. A wiping plate is mounted on the assembly plate.

[0012] Furthermore, the limiting block has an overall T-shaped structure, with its vertical portion embedded in the assembly box and closely fitted to the inner wall of the assembly box.

[0013] Furthermore, the assembly plate is rectangular flat and has multiple evenly arranged mounting holes on its surface. The wiping plate has bolt holes that correspond one-to-one with the assembly plate, and the two are connected by bolts.

[0014] Furthermore, the wiping plate is made of composite cleaning material, with a surface layer of microfiber absorbent cloth.

[0015] Furthermore, the assembly box is rectangular in shape.

[0016] Furthermore, the spring is made of 65Mn spring steel.

[0017] Furthermore, the inner wall of the safety cabinet is integrally formed from food-grade 304 stainless steel.

[0018] The beneficial effects of this application are as follows: The automatic disinfection biosafety cabinet provided by this application drives the first bevel gear to rotate through the drive motor. Through the meshing with the second bevel gear, the power is transmitted to the rotating rod. When the half gear on the rotating rod meshes with the toothed plate, it can drive the toothed plate to reciprocate, thereby causing the wiping plate to wipe the surface of the observation window back and forth during the sliding process, realizing the automatic cleaning function. At the same time, when the wiping plate reciprocates, the bidirectional friction can remove stains in both directions of the observation window at the same time. Combined with the sliding observation window, a dynamic cleaning trajectory is formed, reducing the time spent on repeated wiping.

[0019] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 This is an overall schematic diagram of an automatic disinfection biosafety cabinet according to this application;

[0022] Figure 2 for Figure 1 A schematic diagram of another state of the overall structure;

[0023] Figure 3 for Figure 1 First assembly drawing of the drive component and cleaning component;

[0024] Figure 4 for Figure 3 Enlarged view of the structure of region A in the middle;

[0025] Figure 5 for Figure 1 Second assembly drawing of the drive component and cleaning component;

[0026] Figure 6 for Figure 1 A cross-sectional view of the cleaning component;

[0027] Figure 7 for Figure 1 A partial exploded view of the drive and cleaning components;

[0028] Figure 8 This is a schematic diagram of the closed state of the observation window of an automatic disinfection biosafety cabinet according to this application.

[0029] The following are the labeling elements in the figure:

[0030] 1. Cabinet assembly; 11. Bracket; 12. Safety cabinet; 13. Observation window; 14. Placement tray; 15. Ventilation seat; 2. Drive assembly; 21. Rotating rod; 22. Drive motor; 23. First bevel gear; 24. Second bevel gear; 25. Half gear; 3. Cleaning assembly; 31. Irregular frame; 32. Assembly box; 33. Spring; 34. Limiting block; 35. Limiting plate; 36. Toothed plate; 37. Intermediate block; 38. Assembly plate; 39. Wiping plate. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0033] like Figure 1 , Figure 2 and Figure 8 As shown, this application provides an automatic disinfection biosafety cabinet, including a cabinet assembly 1. The cabinet assembly 1 provides a closed biosafety operating space and integrates an airflow circulation and filtration system to ensure a sterile operating environment. The cabinet assembly 1 includes a bracket 11, which is the support part of the automatic disinfection biosafety cabinet and provides stable support for the automatic disinfection biosafety cabinet. A safety cabinet 12 is fixedly installed on the bracket 11. The inner wall of the safety cabinet 12 is made of food-grade 304 stainless steel in one piece and has a built-in filter to filter the incoming and outgoing air to ensure a sterile environment. It also has an ultraviolet disinfection lamp to sterilize and disinfect the space and items inside the cabinet. At the same time, a ventilation seat 15 is installed on the top of the inner wall of the safety cabinet 12 by bolts. The ventilation seat 15 is connected to the airflow circulation system to maintain stable airflow inside the safety cabinet 12.

[0034] A placement tray 14 is installed at the bottom of the safety cabinet 12. The placement tray 14 is installed on the safety cabinet 12 by fasteners and is used to carry experimental equipment, samples and other items, providing a stable operating platform.

[0035] The front end of the safety cabinet 12 is equipped with a sliding observation window 13. The observation window 13 is made of double-layer tempered glass. A sealing strip is provided between the inner glass and the inner wall of the safety cabinet 12. The surface of the outer glass is hydrophobic. The observation window 13 is guided and slids at the front end of the safety cabinet 12 by embedded guide rails on both sides. The guide rails have built-in dampers to control the sliding speed. At the same time, the observation window 13 is made of transparent material, so that the operator can clearly observe the experimental operation on the placement tray 14.

[0036] like Figures 2-7As shown, a drive assembly 2 is installed inside the safety cabinet 12, which is the power source for the automatic cleaning of the observation window 13. The drive assembly 2 includes a rotating rod 21, which is rotatably connected to the upper end inside the safety cabinet 12 via a bearing and is positioned slightly forward below the ventilation seat 15. This ensures that the rotating rod 21 will not interfere with other components when it rotates, guaranteeing stable and reliable operation. A drive motor 22 located below the ventilation seat 15 is bolted to one side of the upper end inside the safety cabinet 12. A first bevel gear 23 is installed at the output end of the drive motor 22, and a second bevel gear 24 that meshes with the first bevel gear 23 is installed on the rotating rod 21. When the drive motor 22 is started by an external power supply and a corresponding controller, its output end drives the first bevel gear 23 to rotate. Through the meshing transmission between the first bevel gear 23 and the second bevel gear 24, power is transmitted to the rotating rod 21, causing the rotating rod 21 to rotate and providing power support for the cleaning area.

[0037] like Figures 3-6 As shown, a cleaning component 3 is installed at the front end of the ventilation seat 15. During the sliding of the observation window 13, it is driven by the drive component 2 to achieve efficient and automatic cleaning of the observation window 13. The cleaning component 3 includes a special-shaped frame 31 installed on the side of the ventilation seat 15. The special-shaped frame 31 serves as a basic frame. The special-shaped frame 31 is customized according to the contour of the front end of the ventilation seat 15 and is fixedly installed on the outer wall of the front end of the ventilation seat 15 by high-strength bolts.

[0038] Two sets of assembly boxes 32 are symmetrically fixed at the bottom of the irregular frame 31. The assembly box 32 is rectangular in shape with a regular internal space, providing a stable movement space for the internal components. Each assembly box 32 has two springs 33 vertically fixed at its inner bottom. The springs 33 are made of high-quality 65Mn spring steel and have undergone heat treatment to give them good elasticity and durability. They can withstand long-term high-frequency extension and contraction without fatigue damage. The springs 33 are in a compressed state in their natural state. A limit block 34 is welded and fixedly installed at one end. The spring 33 provides an upward elastic force to the limit block 34, so that the limit block 34 always maintains an upward movement trend in the assembly box 32, ensuring that the components of the cleaning assembly 3 can stably return to their positions when not in operation.

[0039] The limiting block 34 has a T-shaped structure. Its vertical part is embedded in the assembly box 32 and fits tightly against the inner wall of the assembly box 32 to form a good guiding structure. This restricts the limiting block 34 to slide only in the vertical direction within the assembly box 32. The horizontal protrusion of the limiting block 34 extends to the outside of the assembly box 32. A limiting plate 35 is fixedly installed on the upper surface of the horizontal part of the limiting block 34. It also adopts a T-shaped design and fits tightly against the inner wall of the assembly box 32, which improves the stability during the sliding process and effectively prevents the limiting block 34 from shifting or shaking during the movement. The front protrusions of the limiting block 34 and the limiting plate 35 both extend to the outside of the assembly box 32 and are fixedly installed with a toothed plate 36.

[0040] Half gears 25 that can mesh with toothed plates 36 are installed on both sides of the rotating rod 21. The tooth surfaces of the half gears 25 are smooth and have moderate hardness. When the drive motor 22 in the drive assembly 2 starts and drives the rotating rod 21 to rotate, the half gears 25 rotate synchronously. At the moment when the half gears 25 and toothed plates 36 begin to mesh, the teeth of the half gears 25 and the tooth grooves of the toothed plates 36 mesh with each other. Using the principle of gear transmission, the circular motion of the half gears 25 is converted into the downward sliding of the toothed plates 36 along the assembly box 32. During this process, the spring 33 is further compressed, storing elastic potential energy to provide power for the subsequent reset of the components.

[0041] A middle block 37, made of high-strength aluminum alloy, is fixedly installed on the upper part of the front outer wall of the toothed plate 36. It is firmly connected to the toothed plate 36 by welding. An assembly plate 38 is fixedly installed on the front end of the middle block 37. The assembly plate 38 is rectangular flat and has multiple evenly arranged mounting holes (not shown in the figure) on its surface. A wiping plate 39 is installed on the assembly plate 38. The wiping plate 39 has bolt holes that correspond one-to-one with the assembly plate 38 (not shown in the figure). The two are connected by bolts to achieve a stable installation of the wiping plate 39 and facilitate the replacement of the wiping plate 39 by the staff. The wiping plate 39 is made of composite cleaning material. The surface layer is a microfiber absorbent cloth with a soft and delicate texture, which can closely adhere to the glass surface of the observation window 13 to deeply remove fine stains. The interior is filled with a high-elasticity sponge layer, which has good flexibility and cushioning performance. During the cleaning process, it can effectively remove stains such as dust and water stains and reduce scratch damage to the glass surface of the observation window 13.

[0042] When the half gear 25 rotates to disengage from the toothed plate 36, the spring 33 quickly recovers its deformation under the action of the elastic potential energy stored in the spring 33, releasing an upward elastic force. This elastic force pushes the limiting block 34, the limiting plate 35, and the toothed plate 36, the intermediate block 37, the assembly plate 38, and the wiping plate 39 connected to them to move upward synchronously, so that they quickly return to their initial positions. This cycle repeats. During the sliding of the observation window 13, the cleaning component 3 can continuously clean the glass surface, keeping the observation window 13 clear and bright at all times, providing the operator with a good field of vision, and ensuring the smooth operation of biological experiments.

[0043] Working principle: When it is necessary to clean the observation window 13, the operator slides the observation window 13 and starts the drive motor 22 through the external power supply. The drive motor 22 is preferably a servo motor, which can precisely control the rotation angle and speed. Its output end drives the first bevel gear 23 to rotate. Through the meshing transmission of the first bevel gear 23 and the second bevel gear 24, the horizontal rotation is converted into the vertical rotation, which in turn drives the rotating rod 21 to rotate. The half gear 25 on the rotating rod 21 rotates synchronously.

[0044] When the half gear 25 meshes with the toothed plate 36, the teeth of the half gear 25 mesh with the tooth grooves of the toothed plate 36. Using the gear transmission principle, the circular motion of the half gear 25 is converted into the toothed plate 36 sliding vertically downward along the assembly box 32. At this time, the spring 33 inside the assembly box 32 is further compressed to store elastic potential energy. The intermediate block 37, the assembly plate 38 and the wiping plate 39 connected to the toothed plate 36 move downward synchronously. The microfiber absorbent cloth on the surface of the wiping plate 39 is closely attached to the glass surface of the observation window 13, which can effectively remove dust, liquid splash residue and chemical reagent condensation stains.

[0045] When the half gear 25 rotates until it disengages from the toothed plate 36, the spring 33 releases its stored elastic potential energy, pushing the limiting block 34 and the limiting plate 35 upwards. This causes the toothed plate 36, the intermediate block 37, the assembly plate 38, and the wiping plate 39 to move upwards synchronously and quickly return to their initial positions. During this process, the wiping plate 39 wipes the surface of the observation window 13 again, completing one complete cleaning cycle. As the observation window 13 slides up or down, the rotating rod 21 continues to rotate, and the half gear 25 engages and disengages with the toothed plate 36 periodically, causing the wiping plate 39 to reciprocate on the surface of the observation window 13, thus achieving continuous cleaning of the observation window 13.

[0046] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An automatic disinfection biosafety cabinet, characterized in that: include: Safety cabinet (12), the safety cabinet (12) is provided with an observation window (13); A drive assembly (2) is installed inside the safety cabinet (12). The drive assembly (2) includes a rotating rod (21) rotatably installed inside the safety cabinet (12). A drive motor (22) is installed inside the safety cabinet (12). A first bevel gear (23) is installed at the output end of the drive motor (22). A second bevel gear (24) that meshes with the first bevel gear (23) is installed on the rotating rod (21). A cleaning component (3), which is installed inside the safety cabinet (12), the cleaning component (3) includes Two sets of assembly boxes (32) are provided. Two springs (33) are fixed inside the assembly box (32). A limit block (34) is installed at one end of the spring (33). A limit plate (35) is installed on the limit block (34). The front ends of the limit block (34) and the limit plate (35) extend outside the assembly box (32) and are both equipped with toothed plates (36). Half gears (25) that can mesh with the toothed plates (36) are installed on both sides of the rotating rod (21). An intermediate block (37) is installed on the toothed plate (36). An assembly plate (38) is installed on the intermediate block (37). A wiping plate (39) is installed on the assembly plate (38).

2. The automatic disinfection biosafety cabinet according to claim 1, characterized in that: The limiting block (34) has a T-shaped structure, and its vertical part is embedded in the assembly box (32) and closely fits the inner wall of the assembly box (32).

3. The automatic disinfection biosafety cabinet according to claim 1, characterized in that: The assembly plate (38) is rectangular flat and has a plurality of evenly arranged mounting holes on its surface. The wiping plate (39) has bolt holes that correspond one-to-one with the assembly plate (38), and the two are connected by bolts.

4. The automatic disinfection biosafety cabinet according to claim 1, characterized in that: The wiping plate (39) is made of composite cleaning material, with the surface being a microfiber absorbent cloth.

5. An automatic disinfection biosafety cabinet according to claim 1, characterized in that: The assembly box (32) is rectangular in shape.

6. An automatic disinfection biosafety cabinet according to claim 1, characterized in that: The spring (33) is made of 65Mn spring steel.

7. An automatic disinfection biosafety cabinet according to claim 1, characterized in that: The inner wall of the safety cabinet (12) is made of food-grade 304 stainless steel in one piece.

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