Biological safety cabinet

Abstract

The utility model relates to the technical field of biology, and discloses a biological safety cabinet which comprises a cabinet body, exhaust holes are formed in the outer surface of the cabinet body, a rotating part is rotationally connected to the right side face of the cabinet body, a plurality of connecting cylinders distributed in a circumferential mode are fixedly connected to the outer surface of the rotating part, and swing frames are hinged to the inner walls of the multiple connecting cylinders; filtering pieces are installed in the multiple swing frames, an exhaust fan is installed at the other ends of the multiple connecting cylinders, and a sealing gasket is installed on the inner wall of the rotating piece. According to the biological safety cabinet, when the filter part is replaced, the filter part can be replaced through rotation of the rotating part, so that the unused filter part can be communicated with the exhaust hole, airflow can be discharged through the unused filter part, the used filter part can be taken out by swinging the swinging frame, and in the process, the filter part can be replaced through the rotating part. The filtering piece is completely and automatically replaced, and the use of the cabinet body does not need to be interrupted, so that the overall practicability is improved.

Description

Technical Field

[0001] This application relates to the field of biotechnology, specifically to a biosafety cabinet. Background Technology

[0002] A living organism is a living entity with life functions, and also a collection of objects. An individual organism refers to a living organism, as opposed to a non-living thing. Its elements include: living objects that are generated through chemical reactions under natural conditions and have the ability to survive and reproduce, as well as the living offspring produced by it (or them) through reproduction. They can respond to external stimuli, depend on and promote each other with the external environment, and can excrete useless substances from their bodies. They also have the characteristics of heredity and variation.

[0003] An existing patent (publication number: CN211755082U) discloses a multifunctional biosafety cabinet, relating to the field of biosafety cabinet technology, aiming to solve the problems of poor ventilation and limited functionality in existing biosafety cabinets. The biosafety cabinet has an internal working chamber with a worktable installed inside. A sealed lid is installed at the front end of the biosafety cabinet. An electric heating film is installed inside the working chamber. A temperature controller is installed on one side of the outside of the biosafety cabinet and connected to the cabinet by screws. A temperature probe is installed at one end of the temperature controller and embedded inside the working chamber. Four ultraviolet germicidal lamps and four auxiliary lighting lamps are installed at the upper end of the working chamber, and both are connected to the working chamber by screws.

[0004] The aforementioned document describes the use of HEPA filters to filter exhaust air. However, the filter screen inside the HEPA filter has a limited lifespan and needs to be replaced periodically. The exhaust HEPA filter in the document is fixedly installed in the exhaust duct, requiring the use of the biosafety cabinet to be interrupted before the filter screen can be replaced. The entire process is carried out inside the biosafety cabinet, and the internal structure of the biosafety cabinet can interfere with the replacement of the HEPA filter to some extent, making the replacement and installation process of the HEPA filter cumbersome. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a biosafety cabinet that offers advantages such as improved practicality and solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a biosafety cabinet, comprising a cabinet body, an exhaust vent on the outer surface of the cabinet body, a rotating component rotatably connected to the right side of the cabinet body, a plurality of circumferentially distributed connecting cylinders fixedly connected to the outer surface of the rotating component, a swing frame hinged to the inner wall of each of the plurality of connecting cylinders, a filter installed inside each of the plurality of swing frames, an exhaust fan installed at the other end of each of the plurality of connecting cylinders, a sealing gasket installed on the inner wall of the rotating component, the sealing gasket contacting the cabinet body, a plurality of communicating holes on the outer surface of the sealing gasket, and each of the plurality of communicating holes communicating with the connecting cylinders adjacent to it.

[0007] With the above solution, when the filter element is replaced, the rotation of the rotating component can replace the filter element, thereby enabling the unused filter element to connect with the exhaust port.

[0008] Multiple circumferentially distributed detection elements are fixedly connected to the outer surface of the rotating component, and a proximity sensor is fixedly connected to the outer surface of the cabinet. The cooperation between the detection elements and the proximity sensor can stop the rotation of the rotating component when the two are close to each other, improve the accuracy of the connection between the connecting cylinder and the exhaust port, and enable the connecting cylinder to maintain a connection with the exhaust port, which facilitates the extraction of air from the cabinet.

[0009] The inner wall of the cabinet is slidably connected to a viewing window, and a control panel is installed on the front of the cabinet. The proximity sensor is electrically connected to the control panel. The viewing window allows staff to easily observe the internal status of the cabinet and make timely operations. The control panel allows for the replacement of the filter without interrupting the normal operation of the cabinet during the replacement process.

[0010] A motor is mounted on the outer surface of the cabinet. A rotating rod is fixedly connected to the output end of the motor. A gear is fixedly connected to the outer surface of the rotating rod. A gear ring is fixedly connected to the outer surface of the rotating component. The gear ring meshes with the gear. The motor can drive the rotating rod to rotate, which in turn drives the gear to mesh with the gear ring, thereby driving the rotating component to rotate. During the rotation, the rotating component can change the airflow path, allowing the airflow to pass through the unused filter element, thus improving the efficiency of filter element replacement.

[0011] Two ultraviolet lamps are installed on the inner top wall of the cabinet. The two ultraviolet lamps are symmetrical to each other. The ultraviolet lamps mainly use ultraviolet radiation to kill or remove microorganisms inside the cabinet, including bacteria and viruses. Turning on the ultraviolet lamps before or after the experiment can effectively purify the working area, reduce the risk of cross-contamination, and thus ensure the accuracy of the experimental results.

[0012] The cabinet has a placement component installed on its inner bottom wall. A scraper is slidably connected to the upper surface of the placement component. The scraper can clean the upper surface of the placement component, and the user can spray alcohol on the placement component to make the cleaning more thorough.

[0013] The inner bottom wall of the cabinet has two grooves, and the inner walls of the two grooves are fitted with snap plates. The grooves allow impurities on the placed items to be discharged into the grooves with the help of scrapers, preventing impurities from being retained on the placed items. At the same time, the impurities in the grooves can be removed by removing the snap plates.

[0014] Two winding rods are rotatably connected to the bottom wall of the cabinet. Two traction ropes are fixedly connected to the outer surfaces of the two winding rods. The other ends of the two traction ropes pass through the cabinet and are fixedly connected to the scraper. The places where the ropes pass through the cabinet are sealed. A dual-axis motor is installed on the bottom wall of the cabinet. The ends of the two winding rods that are close to each other are fixedly connected to the output end of the dual-axis motor. The dual-axis motor can drive the winding rods to pull the traction ropes, so that the traction ropes can drive the scraper to repeatedly clean the upper surface of the placed items, making them more thoroughly cleaned.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] This biosafety cabinet allows for filter replacement via the rotation of a rotating component. This enables unused filters to connect with the exhaust vent, allowing airflow to pass through the unused filters. The used filters can be removed by swinging the frame. The entire process of filter replacement is fully automatic and does not require interruption of cabinet use, thus improving overall practicality. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the overall structure of this application;

[0018] Figure 2 For this application Figure 1 Enlarged schematic diagram of the structure at point A;

[0019] Figure 3 This is a schematic diagram of the overall structure of this application. Figure 1 ;

[0020] Figure 4 This is a schematic diagram of the rotating component structure of this application;

[0021] Figure 5 This is a schematic diagram of the connecting cylinder structure of this application;

[0022] Figure 6 This is a schematic diagram of the overall structure of this application. Figure 2 .

[0023] In the picture:

[0024] 1. Cabinet; 2. Exhaust vent; 3. Rotating component; 4. Connecting cylinder; 5. Swing frame; 6. Filter; 7. Exhaust fan; 8. Sealing gasket; 9. Connecting hole; 10. Detection component; 11. Proximity sensor; 12. Viewing window; 13. Control panel; 14. Motor 1; 15. Rotating rod; 16. Gear; 17. Gear ring; 18. Ultraviolet lamp; 19. Placement component; 20. Scraper; 21. Groove; 22. Buckle plate; 23. Rewinding rod; 24. Traction rope; 25. Dual-axis motor. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] Please see Figure 1 , Figure 2 and Figure 3 This embodiment of a biosafety cabinet includes a cabinet body 1. The cabinet body 1 has an exhaust vent 2 on its outer surface. A rotating component 3 is rotatably connected to the right side of the cabinet body 1. Multiple circumferentially distributed connecting cylinders 4 are fixedly connected to the outer surface of the rotating component 3. A swing frame 5 is hinged to the inner wall of each of the multiple connecting cylinders 4. A filter element 6 is installed inside each of the multiple swing frames 5. An exhaust fan 7 is installed at the other end of each of the multiple connecting cylinders 4. A sealing gasket 8 is installed on the inner wall of the rotating component 3, and the sealing gasket 8 contacts the cabinet body 1. Multiple connecting holes 9 are opened on the outer surface of the sealing gasket 8, and each connecting hole 9 communicates with its adjacent connecting cylinder 4. When the filter element 6 is replaced, the rotation of the rotating component 3 allows the filter element 6 to be replaced, thereby enabling the unused filter element 6 to communicate with the exhaust vent 2, allowing airflow to pass through the unused filter element 6 and be discharged. The used filter element 6 can be removed by swinging the swing frame 5. This process automatically replaces the filter element 6 without interrupting the use of the cabinet body 1, thus improving overall practicality.

[0027] Please see Figure 1 , Figure 4 and Figure 5Multiple circumferentially distributed detection elements 10 are fixedly connected to the outer surface of the rotating component 3. A proximity sensor 11 is fixedly connected to the outer surface of the cabinet 1. The cooperation between the detection elements 10 and the proximity sensor 11 can stop the rotation of the rotating component 3 when they are close together, improving the accuracy of the connection between the connecting cylinder 4 and the exhaust port 2, and ensuring that the connecting cylinder 4 can maintain communication with the exhaust port 2, facilitating the extraction of air from the cabinet 1. A viewing window 12 is slidably connected to the inner wall of the cabinet 1. A control panel 13 is installed on the front of the cabinet 1. The proximity sensor 11 is electrically connected to the control panel 13. The viewing window 12 allows the staff to easily observe the internal status of the cabinet 1 and make timely operations. 3 can control the replacement of filter element 6 without interrupting the normal operation of cabinet 1 during the replacement process. A motor 14 is installed on the outer surface of cabinet 1. A rotating rod 15 is fixedly connected to the output end of motor 14. A gear 16 is fixedly connected to the outer surface of rotating rod 15. A gear ring 17 is fixedly connected to the outer surface of rotating element 3. The gear ring 17 meshes with the gear 16. Motor 14 can drive rotating rod 15 to rotate, so that rotating rod 15 can drive gear 16 to mesh with gear ring 17, thereby driving rotating element 3 to rotate. During the rotation, rotating element 3 can change the airflow path, so that the airflow can pass through the unused filter element 6, thereby improving the efficiency of filter element 6 replacement.

[0028] Please see Figure 1 , Figure 5 and Figure 6Two ultraviolet lamps 18 are installed on the inner top wall of cabinet 1, symmetrically opposite each other. The ultraviolet lamps 18 mainly use ultraviolet radiation to kill or remove microorganisms, including bacteria and viruses, inside cabinet 1. Turning on the ultraviolet lamps 18 before or after the experiment can effectively purify the work area, reduce the risk of cross-contamination, and thus ensure the accuracy of the experimental results. A placement piece 19 is installed on the inner bottom wall of cabinet 1. A scraper 20 is slidably connected to the upper surface of the placement piece 19. The scraper 20 can clean the upper surface of the placement piece 19, and the user can further clean it by spraying alcohol onto the scraper 20. Two grooves 21 are formed on the inner bottom wall of cabinet 1, and each groove 21 has a snap-fit ​​plate 22 attached to its inner wall. The grooves 21 allow the scraper 22 to pass through. The 0 mechanism, in conjunction with the scraper plate 20, directs impurities from the placement component 19 into the groove 21, preventing them from remaining on the component 19. Simultaneously, the scraper plate 22 can be removed from the groove 21. Two retractable rods 23 are rotatably connected to the bottom wall of the cabinet 1. Two traction ropes 24 are fixedly connected to the outer surfaces of both retractable rods 23. The other ends of the traction ropes 24 pass through the cabinet 1 and are fixedly connected to the scraper plate 20. The points where the ropes pass through the cabinet 1 are sealed. A dual-axis motor 25 is installed on the bottom wall of the cabinet 1. The ends of the two retractable rods 23 that are close to each other are fixedly connected to the output end of the dual-axis motor 25. The dual-axis motor 25 drives the retractable rods 23 to pull the traction ropes 24, enabling the traction ropes 24 to drive the scraper plate 20 to repeatedly clean the upper surface of the placement component 19, ensuring a more thorough cleaning.

[0029] In this embodiment of a biosafety cabinet, when the filter element 6 is replaced, the filter element 6 can be replaced by rotating the rotating part 3, thereby enabling the unused filter element 6 to connect with the exhaust port 2, allowing airflow to be discharged through the unused filter element 6. The used filter element 6 can be removed by swinging the swing frame 5. In this process, the filter element 6 is replaced completely automatically without interrupting the use of the cabinet body 1, thereby improving the overall practicality.

[0030] The working principle of the above embodiment is as follows: First, when the filter element 6 is replaced, the operator transmits a signal to the motor 14 through the control panel 13. During the operation of the motor 14, the rotating rod 15 is driven to rotate, which in turn drives the gear 16 to mesh with the gear ring 17, thereby driving the rotating element 3 to rotate. During the rotation of the rotating element 3, multiple connecting cylinders 4 can swing, thereby changing the exhaust path. When the exhaust path is changed, the filter element 6 is also replaced, allowing the airflow to pass through the unused filter element 6 for discharge. The used filter element 6 can be removed by swinging the swing frame 5. In this process, the filter element 6 is replaced completely automatically without interrupting the use of the cabinet 1, thereby improving the overall practicality. During the rotation of the rotating element 3, the seal is maintained. The pad 8 can keep the exhaust port 2 closed, preventing the gas inside the cabinet 1 from being released to the outside. By installing the detection component 10 and the proximity sensor 11, the rotation of the rotating component 3 can be stopped when the two are close, improving the accuracy of the connection between the connecting cylinder 4 and the exhaust port 2, so that the connecting cylinder 4 can maintain the connection with the exhaust port 2, which is convenient for extracting air from the cabinet 1. When cleaning the placement component 19, the staff sprays alcohol on the placement component 19, and then the dual-axis motor 25 can drive the winding rod 23 to wind up the traction rope 24. Through the drive of the dual-axis motor 25 and the traction of the traction rope 24, the scraper 20 can repeatedly clean the upper surface of the placement component 19, so that the impurities are pushed into the groove 21 by the scraper 20. The staff can remove the impurities in the groove 21 by removing the buckle plate 22.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0032] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A biological safety cabinet comprising a cabinet body (1), characterised in that: The outer surface of the cabinet (1) is provided with an exhaust hole (2), the right side of the cabinet (1) is rotatably connected with a rotating part (3), the outer surface of the rotating part (3) is fixedly connected with a plurality of circumferentially distributed connecting barrels (4), the inner walls of the plurality of connecting barrels (4) are all hingedly connected with swing frames (5), the interiors of the plurality of swing frames (5) are all mounted with filter parts (6), the other ends of the plurality of connecting barrels (4) are mounted with exhaust fans (7), the inner wall of the rotating part (3) is mounted with a sealing gasket (8), the sealing gasket (8) is in contact with the cabinet (1), the outer surface of the sealing gasket (8) is provided with a plurality of communication holes (9), and the plurality of communication holes (9) are all in communication with the connecting barrels (4) proximate thereto.

2. A biological safety cabinet according to claim 1, wherein: The outer surface of the rotating part (3) is fixedly connected with a plurality of circumferentially distributed detection parts (10), and the outer surface of the cabinet (1) is fixedly connected with a proximity sensor (11).

3. A biological safety cabinet according to claim 2, wherein: The inner wall of the cabinet (1) is slidably connected with a viewing window (12), the front of the cabinet (1) is mounted with a control panel (13), and the proximity sensor (11) is electrically connected with the control panel (13).

4. The biological safety cabinet of claim 1, wherein: The outer surface of the cabinet (1) is mounted with a motor (14), the output end of the motor (14) is fixedly connected with a rotating rod (15), the outer surface of the rotating rod (15) is fixedly connected with a gear (16), the outer surface of the rotating part (3) is fixedly connected with a gear ring (17), and the gear ring (17) is in meshing connection with the gear (16).

5. A biological safety cabinet according to claim 1, wherein: The inner top wall of the cabinet (1) is mounted with two ultraviolet lamp tubes (18), and the two ultraviolet lamp tubes (18) are symmetrically arranged.

6. A biological safety cabinet according to claim 1, wherein: The inner bottom wall of the cabinet (1) is mounted with a placing part (19), and the upper surface of the placing part (19) is slidably connected with a scraper (20).

7. A biological safety cabinet according to claim 1, wherein: The inner bottom wall of the cabinet (1) is provided with two grooves (21), and the inner walls of the two grooves (21) are all clamped with buckle plates (22).

8. A biological safety cabinet according to claim 1, wherein: The inner bottom wall of the cabinet (1) is rotatably connected with two winding rods (23), the outer surfaces of the two winding rods (23) are all fixedly connected with two traction ropes (24), the other ends of the two traction ropes (24) are all fixedly connected with the scraper (20) penetrating through the cabinet (1), the inner bottom wall of the cabinet (1) is mounted with a double-shaft motor (25), and the ends of the two winding rods (23) proximal to each other are all fixedly connected with the output end of the double-shaft motor (25).

Images