A biosafety cabinet for biological detection

Abstract

The utility model relates to the field of biological safety cabinet discloses a biological safety cabinet for biological detection, including cabinet shell, the inner wall fixedly connected with mounting panel of cabinet shell, the top outer wall of mounting panel is provided with fan, the outer wall of fan has opened the air outlet, the bottom outer wall fixedly connected with second filter plate of mounting panel, the top outer wall fixedly connected with first filter plate of mounting panel, the top outer wall fixedly connected with ventilation pipe of mounting panel, in the utility model, through setting up fan, first filter plate and second filter plate, can form multiple filtering structure, can more efficiently intercept the aerosol and small contaminant in the air, greatly reduce the risk that the outside pollution enters the cabinet, simultaneously, through setting up damper and spring, can constitute shock attenuation buffer device, can effectively absorb the outside environment vibration and the shaking of the operation in the cabinet, avoid the cabinet precision instrument displacement, sample spilling.

Description

Technical Field

[0001] This utility model relates to the field of biosafety cabinets, and in particular to a biosafety cabinet for biological detection. Background Technology

[0002] Biosafety cabinets are specialized devices widely used in biological testing experiments. They do not rely on complex external purification systems and can create a stable sterile and clean environment within themselves, providing multiple layers of protection for experimental samples, operators, and the surrounding environment. They are suitable for use in experimental operations that require strict isolation from contamination, such as biological sample processing and microbial culture, providing a fundamental guarantee for the safety and accuracy of biological testing experiments.

[0003] Existing biosafety cabinets for biological testing require pre-running of the equipment before conducting experiments. Once the internal cleanliness and airflow stability meet the standards, the samples, reagents, and instruments required for the experiment are moved into the cabinet through the transfer window or operating port. During the experiment, all sample processing, microbial inoculation, culture medium preparation, and other operations are completed in the designated area inside the cabinet. After the experiment, the cabinet is disinfected before the equipment is turned off. This method is suitable for various biological experimental operations requiring aseptic protection, such as biological sample testing and pathogen research.

[0004] Existing biosafety cabinets for biological testing have certain shortcomings in practical use. Firstly, they lack shock-absorbing structures. When precision instruments need to be placed inside the cabinet during experiments, or when there are slight vibrations in the external environment, the lack of shock-absorbing structures can cause instruments to shift and samples to shake, affecting the accuracy of experimental data and potentially causing sample spillage and contamination of the cabinet environment. Secondly, existing cabinets typically use single-layer filtration, which has limited ability to intercept airborne aerosols, fine particles, and other contaminants, making effective isolation difficult. During experiments, external contaminants can easily pass through the filter layer and enter the cabinet, contaminating experimental samples and leading to deviations in experimental results. Therefore, this paper proposes a biosafety cabinet for biological testing to address these problems. Summary of the Invention

[0005] To overcome the above deficiencies, this utility model provides a biosafety cabinet for biological detection, which aims to improve the problems of existing biosafety cabinets lacking shock absorption structures, leading to instrument displacement and sample contamination, and using single-layer filtration which is difficult to isolate aerosols, causing sample deviation and safety hazards.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a biosafety cabinet for biological detection, comprising a cabinet shell, an mounting plate fixedly connected to the inner wall of the cabinet shell, a fan disposed on the top outer wall of the mounting plate, an air outlet on the outer wall of the fan, a second filter plate fixedly connected to the bottom outer wall of the mounting plate, a first filter plate fixedly connected to the top outer wall of the mounting plate, a ventilation duct fixedly connected to the top outer wall of the mounting plate, an air inlet on the top outer wall of the ventilation duct, and the cabinet shell... A control console is fixedly connected to the outer wall. An air outlet duct is provided on the top outer wall of the cabinet shell. A sliding groove is opened on the outer wall of the cabinet shell. A push plate is slidably connected to the inner wall of the sliding groove. A support leg is fixedly connected to the bottom outer wall of the cabinet shell. A damper is fixedly connected to the bottom outer wall of the support leg. A fixing plate is fixedly connected to the outer wall of the damper. A sleeve is fixedly connected to the outer wall of the fixing plate. A spring is fixedly connected to the outer wall of the fixing plate. A threaded groove is opened on the top outer wall of the sleeve. A knob is threadedly connected to the outer wall of the threaded groove.

[0007] As a further description of the above technical solution: A placement tray is fixedly connected to the inner wall of the cabinet shell, and a drain tray is inserted into the bottom outer wall of the placement tray. A drain pipe is provided on the bottom outer wall of the drain tray.

[0008] As a further description of the above technical solution: An ultraviolet lamp is installed on the bottom outer wall of the second filter plate.

[0009] As a further description of the above technical solution: A suction cup is hinged to the bottom outer wall of the damper.

[0010] As a further description of the above technical solution: The outer wall of the push plate is in close contact with the inner wall of the slide, and the length of the push plate is adapted to the height of the corresponding side of the cabinet shell.

[0011] As a further description of the above technical solution: The inner wall of the ventilation duct is in contact with the outer wall of the first filter plate, and the central axis of the ventilation duct is on the same straight line as the central axis of the air inlet.

[0012] As a further description of the above technical solution: The knob is elastically connected to the fixed plate via a spring.

[0013] As a further description of the above technical solution: The suction cups are provided in four sets, which are respectively hinged to the bottom outer wall of the four dampers, and the bottom end faces of the four sets of suction cups are on the same horizontal plane.

[0014] This utility model has the following beneficial effects: 1. In this utility model, by setting up a fan, a first filter plate and a second filter plate, a multi-layer filtration structure can be formed, which can more efficiently intercept aerosols and tiny pollutants in the air, and significantly reduce the risk of external pollution entering the cabinet. At the same time, by setting up a damper and a spring, a shock absorption and buffer device can be formed, which can effectively absorb the vibration of the external environment and the shaking caused by the operation inside the cabinet, and prevent the displacement of precision instruments inside the cabinet and the spillage of samples.

[0015] 2. In this utility model, by setting an installation plate, the core components such as the fan, the first filter plate, and the second filter plate can be stably fixed, ensuring that the position of each component does not shift during operation, thus ensuring the stable operation of the filtration and ventilation system. At the same time, by setting a drain tray and a drain pipe, the waste liquid and water generated during the experiment can be collected in a centralized manner and then quickly discharged outside the cabinet through the drain pipe, avoiding the accumulation of waste liquid inside the cabinet and causing pollution, reducing the amount of cleaning work after the experiment, and improving the convenience of experimental operation and the cleanliness of the cabinet environment. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the overall structure of a biosafety cabinet for biological detection proposed in this utility model; Figure 2 This is a top view schematic diagram of the overall structure of a biosafety cabinet for biological detection proposed in this utility model; Figure 3 This is an exploded view of the overall structure of a biosafety cabinet for biological detection proposed in this utility model; Figure 4 This is an exploded structural diagram of the mounting plate of a biosafety cabinet for biological detection proposed in this utility model; Figure 5 This is a schematic cross-sectional view of the damper structure of a biosafety cabinet for biological detection proposed in this utility model. Figure 6 This is an enlarged schematic diagram of a partial structure of the outer shell of a biosafety cabinet for biological detection proposed in this utility model.

[0017] Legend: 1. Cabinet shell; 2. Support legs; 3. Control panel; 4. Fan; 5. Air inlet; 6. Placement tray; 7. Drain tray; 8. Ventilation duct; 9. Mounting plate; 10. First filter plate; 11. Air outlet; 12. Second filter plate; 13. Ultraviolet lamp; 14. Push plate; 15. Drain pipe; 16. Air outlet duct; 17. Damper; 18. Suction cup; 19. Sleeve; 20. Threaded groove; 21. Knob; 22. Spring; 23. Fixing plate; 24. Slide groove. Detailed Implementation

[0018] 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.

[0019] Reference Figures 1-3 This utility model provides an embodiment of a biosafety cabinet for biological detection, including a cabinet shell 1, with an mounting plate 9 fixedly connected to its inner wall. The mounting plate 9 is used to support and fix core components such as a top fan 4, a first filter plate 10, and a ventilation pipe 8. The top outer wall of the mounting plate 9 is provided with a fan 4, which can generate airflow power to drive air to circulate inside the equipment. The outer wall of the fan 4 has an air outlet 11, which is used to guide the airflow generated by the fan 4 to the subsequent filtration structure. The bottom outer wall of the mounting plate 9 is fixedly connected with a second filter plate 12, which can perform secondary purification on the air after preliminary filtration to further intercept pollutants. The bottom outer wall of the second filter plate 12 is provided with an ultraviolet lamp 13, which can emit ultraviolet light to sterilize and disinfect the operating area inside the cabinet to prevent the growth of microorganisms. The top outer wall of the mounting plate 9 is fixedly connected with a first filter plate 10, which can perform preliminary filtration on the air entering the equipment to remove large particulate impurities in the air.

[0020] Reference Figures 2-4 A ventilation pipe 8 is fixedly connected to the top outer wall of the mounting plate 9. The ventilation pipe 8 is used to guide external air into the air inlet 5 and flow through the first filter plate 10. The inner wall of the ventilation pipe 8 is in contact with the outer wall of the first filter plate 10, which can ensure that the air is completely filtered by the first filter plate 10 and prevent unfiltered air from entering directly. The central axis of the ventilation pipe 8 is on the same straight line as the central axis of the air inlet 5, which can reduce air flow resistance and ensure stable airflow. The top outer wall of the ventilation pipe 8 is provided with an air inlet 5, which is the channel for external air to enter the equipment. A control console 3 is fixedly connected to the outer wall of the cabinet shell 1. The control console 3 is used by the operator to control the start and stop of components such as the fan 4 and the ultraviolet lamp 13 and their operating parameters. An air outlet 16 is provided on the top outer wall of the cabinet shell 1. The air outlet 16 is used to exhaust the air that has been filtered and purified multiple times to the outside of the cabinet.

[0021] Reference Figure 6The outer wall of the cabinet shell 1 is provided with a sliding groove 24, which provides a sliding track for the push plate 14. The inner wall of the sliding groove 24 is slidably connected to the push plate 14. The push plate 14 can be slidably opened and closed to open the operating opening of the cabinet shell 1, which facilitates experimental operation and sealing inside the cabinet. The outer wall of the push plate 14 is in close contact with the inner wall of the sliding groove 24, which can enhance the sealing of the cabinet and prevent external contamination from entering. The length of the push plate 14 is adapted to the height of the corresponding side of the cabinet shell 1, which can completely cover the operating opening.

[0022] Reference Figure 1 , Figure 5 Support feet 2 are fixedly connected to the bottom outer wall of the cabinet shell 1. Support feet 2 support the cabinet shell 1, maintaining a certain distance between the bottom of the equipment and the ground. Dampers 17 are fixedly connected to the bottom outer wall of the support feet 2. Dampers 17 absorb external vibrations, reducing their impact on experiments inside the cabinet. Suction cups 18 are hinged to the bottom outer wall of the dampers 17. Suction cups 18 adhere to the ground, enhancing the stability of the equipment and preventing displacement. Four sets of suction cups 18 are provided, each hinged to the bottom outer wall of one of the four dampers 17, providing even suction force from the four corners. The bottom surfaces of the four sets of suction cups 18 are on the same horizontal plane, ensuring stable placement of the equipment and preventing tilting due to uneven force. A fixing plate 23 is fixedly connected to the outer wall of the dampers 17, used for connecting and fixing the sleeve. A sleeve 19 is fixedly connected to the outer wall of the fixing plate 23 and the spring 22. The sleeve 19 provides a mounting carrier for the knob 21. The spring 22 is fixedly connected to the outer wall of the fixing plate 23. The spring 22 can provide elastic support for the knob 21, which is convenient for the knob 21 to be reset and fixed after adjustment. The knob 21 is elastically connected to the fixing plate 23 through the spring 22. The tightness of the spring 22 can be adjusted by rotating the knob 21, thereby adjusting the shock absorption effect of the damper 17. A threaded groove 20 is opened on the top outer wall of the sleeve 19. The threaded groove 20 cooperates with the knob 21 to realize the threaded connection and position adjustment of the knob 21. The knob 21 is threadedly connected to the outer wall of the threaded groove 20. The knob 21 can change its position on the sleeve 19 by rotation, thereby adjusting the support height and shock absorption performance of the bottom of the equipment.

[0023] Reference Figures 2-4 The inner wall of the cabinet shell 1 is fixedly connected to a placement tray 6, which is used to place the samples, reagents and instruments required for the experiment, so as to facilitate the experimental operation. A drain tray 7 is inserted into the bottom outer wall of the placement tray 6. The drain tray 7 can collect the waste liquid or water dripping from the placement tray 6 to prevent the liquid from directly contacting the inside of the cabinet. A drain pipe 15 is provided on the bottom outer wall of the drain tray 7. The drain pipe 15 is used to discharge the waste liquid collected by the drain tray 7 out of the cabinet to realize the centralized treatment of waste liquid.

[0024] Working principle: The operator starts the equipment via control panel 3, the fan 4 starts running and generates airflow. External air enters the ventilation duct 8 through the air inlet 5 at the top of the cabinet shell 1. Because the inner wall of the ventilation duct 8 is in close contact with the outer wall of the first filter plate 10 and their central axes are aligned with the central axis of the air inlet 5, the air can flow through the first filter plate 10 without leakage to complete the initial filtration to remove large particulate impurities. Subsequently, the air is guided through the air outlet 11 of the fan 4 to the second filter plate 12 at the bottom of the mounting plate 9 for secondary purification to intercept aerosols and other small pollutants, achieving multiple filtrations. The purified air enters the operating area inside the cabinet shell 1. The operator opens the operating opening by sliding the push plate 14 and processes samples on the placement tray 6. Waste liquid or water dripping from the placement tray 6 falls into the drain tray 7 inserted below. Waste liquid is discharged outside the cabinet through the drain pipe 15 at the bottom of the drain tray 7 for centralized treatment. The purified air used inside the cabinet is finally discharged from the equipment through the air outlet pipe 16 at the top of the cabinet shell 1. After the experiment, the operator turns on the ultraviolet lamp 13 through the control panel 3. The ultraviolet lamp 13 emits ultraviolet light to sterilize and disinfect the operating area to avoid microbial residue. During the overall operation of the equipment and the experiment, the damper 17 connected to the bottom support foot 2 can absorb external vibration. With the elastic connection structure of spring 22 and knob 21, rotating the knob 21 can adjust the tension of spring 22 and thus adjust the shock absorption effect to reduce the impact of vibration on the experiment inside the cabinet. At the same time, the four sets of suction cups 18 hinged at the bottom of the damper 17 can adhere to the ground to enhance the stability of the equipment placement and ensure that the experiment and disinfection process are carried out in a stable and clean environment.

[0025] 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 biosafety cabinet for biological detection, comprising a cabinet shell (1), characterized in that: An installation plate (9) is fixedly connected to the inner wall of the cabinet shell (1). A fan (4) is provided on the top outer wall of the installation plate (9). An air outlet (11) is opened on the outer wall of the fan (4). A second filter plate (12) is fixedly connected to the bottom outer wall of the installation plate (9). A first filter plate (10) is fixedly connected to the top outer wall of the installation plate (9). A ventilation pipe (8) is fixedly connected to the top outer wall of the installation plate (9). An air inlet (5) is opened on the top outer wall of the ventilation pipe (8). A control console (3) is fixedly connected to the outer wall of the cabinet shell (1). An air outlet (16) is provided on the top outer wall of the cabinet shell (1). The outer wall of the cabinet shell (1) is provided with a sliding groove (24), and a push plate (14) is slidably connected to the inner wall of the sliding groove (24). A support foot (2) is fixedly connected to the bottom outer wall of the cabinet shell (1). A damper (17) is fixedly connected to the bottom outer wall of the support foot (2). A fixing plate (23) is fixedly connected to the outer wall of the damper (17). A sleeve (19) is fixedly connected to the outer wall of the fixing plate (23). A spring (22) is fixedly connected to the outer wall of the fixing plate (23). A threaded groove (20) is provided on the top outer wall of the sleeve (19). A knob (21) is threadedly connected to the outer wall of the threaded groove (20).

2. A biosafety cabinet for biological detection according to claim 1, characterized in that: The inner wall of the cabinet shell (1) is fixedly connected to a placement tray (6), and a drain tray (7) is inserted into the bottom outer wall of the placement tray (6). A drain pipe (15) is provided on the bottom outer wall of the drain tray (7).

3. A biosafety cabinet for biological detection according to claim 1, characterized in that: The bottom outer wall of the second filter plate (12) is provided with an ultraviolet lamp (13).

4. A biosafety cabinet for biological detection according to claim 2, characterized in that: The damper (17) has a suction cup (18) hinged to its bottom outer wall.

5. A biosafety cabinet for biological detection according to claim 1, characterized in that: The outer wall of the push plate (14) is in close contact with the inner wall of the slide (24), and the length of the push plate (14) is adapted to the height of the corresponding side of the cabinet shell (1).

6. A biosafety cabinet for biological detection according to claim 1, characterized in that: The inner wall of the ventilation pipe (8) is in contact with the outer wall of the first filter plate (10), and the central axis of the ventilation pipe (8) is on the same straight line as the central axis of the air inlet (5).

7. A biosafety cabinet for biological detection according to claim 1, characterized in that: The knob (21) is elastically connected to the fixing plate (23) by a spring (22).

8. A biosafety cabinet for biological detection according to claim 4, characterized in that: The suction cups (18) are provided in four sets, which are respectively hinged to the bottom outer wall of the four dampers (17), and the bottom end faces of the four sets of suction cups (18) are on the same horizontal plane.

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