Biological safety cabinet for classified storage
The stabilizing components driven by an electric push rod and the automatic pop-out design solve the problems of damage and leakage caused by sample box shaking in biosafety cabinets, achieving sample stability and ease of operation, reducing the risk of cross-contamination, and improving work efficiency.
Patent Information
- Application Number
- CN202520329373.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-27
AI Technical Summary
In existing biosafety cabinets, the sample compartments are prone to damage or leakage due to shaking, which cannot effectively guarantee the stability and safety of the samples.
The stabilizing and automatic ejection components are driven by electric push rods. The electric push rods drive the moving block to slide on the guide rail, and the rotating rod drives the clamp to achieve stable clamping of the sample box. Combined with the design of springs and connecting rods, the drawer can be automatically ejected, avoiding the risk of contamination caused by sample box shaking and manual operation.
It effectively prevents the sample box from shaking and colliding inside the biosafety cabinet, ensuring the integrity and stability of the sample, improving operational convenience, reducing the risk of cross-contamination, and increasing work efficiency.
Smart Images
Figure CN223888045U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of classified storage technology, and in particular to a biosafety cabinet for classified storage. Background Technology
[0002] In the field of modern biological research and medical experiments, biosafety cabinets play a vital role. They are important devices used to protect operators, experimental samples, and the environment from biohazardous substances. With the continuous development of bioscience and technology, the requirements for sample processing and preservation in experiments are becoming increasingly stringent. It is necessary not only to ensure the purity of the samples, but also to ensure their stability and safety during operation. This has prompted continuous innovation and improvement in the functional design of biosafety cabinets to meet the growing experimental needs.
[0003] Currently available biosafety cabinets typically employ racks or mounting slots in terms of mechanical structure and technical principles, utilizing friction or gravity to maintain the relative stability of samples. In terms of drawer design, they generally adopt a manual push-pull structure, using slides and handles to open and close the drawers. The principle is mainly based on mechanical sliding and fixing. These traditional structures and technical solutions can meet the basic experimental operation requirements to a certain extent and have played an important role in past biological experiments.
[0004] During the actual operation of biosafety cabinets, various factors such as vibration of experimental equipment, operator movements, and slight interference from the external environment can cause sample boxes that are fixed by simple racks or slots to shake. This shaking can lead to internal samples colliding and causing damage. If the samples are biologically active or infectious, the damage can also lead to leakage. This not only compromises the accuracy and integrity of the experiment but also threatens the safety of the operators and the experimental environment, failing to effectively guarantee the stability and safety of the samples throughout the experiment. Therefore, a biosafety cabinet with categorized storage is proposed to address these issues. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a biosafety cabinet for classified storage, which aims to improve the problem of sample damage or leakage due to shaking in the prior art.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A biosafety cabinet for categorized storage includes a rack, an outer shell inside the rack, a drawer inside the outer shell, a stabilizing component inside the outer shell, and a pop-out component inside the outer shell.
[0008] The stabilizing component includes an electric push rod, the outer wall of which is located at the bottom of the drawer. A movable block is fixedly connected to the output end of the electric push rod. A guide rail is provided inside the outer casing. The inner wall of the movable block is slidably connected to the outer wall of the guide rail. A locking pin is rotatably connected to the top of the movable block. A rotating rod is fixedly connected to one side of the locking pin. Two movable blocks are slidably connected to the outer wall of the other guide rail. A locking pin is rotatably connected to the other side of the rotating rod. The bottom of the locking pin is fixedly connected to the top of the movable block. A clamp is fixedly connected to the top of the movable block. A sliding groove is provided inside the outer casing. The outer wall of the clamp is slidably connected to the inner wall of the sliding groove.
[0009] As a further description of the above technical solution:
[0010] A slider is fixedly connected inside the outer casing 1, and a slider is slidably connected to the bottom of the drawer. The pop-out component includes an outer casing 2, the outer wall of which is disposed on the inner wall of the outer casing 1, and a connecting block is disposed inside the outer casing 2.
[0011] As a further description of the above technical solution:
[0012] A spring is fitted on the outer wall of the connecting block. One end of the spring is fixedly connected to the inside of the outer shell, and the other end of the spring is fixedly connected to the connecting block.
[0013] As a further description of the above technical solution:
[0014] The top of the outer shell is rotatably connected to a connecting rod, and the bottom of the connecting rod is fixedly connected to a limiting post. The connecting block has a sliding groove, and the outer wall of the limiting post is slidably connected to the inner wall of the sliding groove.
[0015] As a further description of the above technical solution:
[0016] A sliding column is fixedly connected inside the connecting block, and a second sliding groove is opened inside the connecting block. A placement plate is fixedly connected to the bottom of the connecting block, and the outer wall of the placement plate is slidably connected to the inner wall of the second sliding groove.
[0017] As a further description of the above technical solution:
[0018] The bottom of the outer shell is rotatably connected to a rotating column, the outer wall of the rotating column is fixedly connected to a connector, and the side wall of the connector is fixedly connected to a limiting column.
[0019] As a further description of the above technical solution:
[0020] The placement plate has a limiting groove inside, and the outer wall of the limiting post is slidably connected to the inner wall of the limiting groove.
[0021] As a further description of the above technical solution:
[0022] A second connecting rod is fixedly connected to one side of the connector, and the outer wall of the second connecting rod is slidably connected to the bottom of the drawer.
[0023] This utility model has the following beneficial effects:
[0024] In this invention, by activating the electric push rod, the first moving block slides on the guide rail, which in turn drives the rotating rod to rotate, thereby causing the second moving block to displace on the outer wall of the guide rail. The second moving block then pushes the clamp to slide within the first sliding groove, achieving the effect of stabilizing and fixing the sample box, avoiding the problem of sample damage or leakage due to shaking, and ensuring the integrity and stability of the sample.
[0025] In this invention, pressing the drawer moves the sliding column, which in turn moves the connecting block, causing the spring to retract. This, in turn, causes the connecting rod to shift, allowing the limiting post to slide in the sliding groove and lock onto the left side. Simultaneously, it rotates the connecting piece at the bottom of the outer casing, causing the limiting post to shift in the limiting groove. The placement plate slides in the sliding groove, and the connecting rod disengages from the bottom of the drawer, allowing the drawer to pop out automatically. This invention solves the problem of inconvenience and potential contamination caused by operators wearing protective equipment manually operating the drawer in biosafety experiments, improving operational convenience and work efficiency. Attached Figure Description
[0026] Figure 1 A three-dimensional view of a biosafety cabinet for categorized storage proposed in this utility model;
[0027] Figure 2 This is a schematic cross-sectional view of a biosafety cabinet drawer for categorized storage proposed in this utility model.
[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0029] Figure 4 This is a schematic cross-sectional view of a slider structure for a biosafety cabinet for classified storage proposed in this utility model.
[0030] Figure 5 This is a schematic diagram of the exploded structure of the outer shell of a biosafety cabinet for classified storage proposed in this utility model.
[0031] Legend:
[0032] 1. Frame; 2. Outer shell 1; 3. Drawer; 4. Slider; 5. Electric push rod; 6. Moving block 1; 7. Guide rail; 8. Moving block 2; 9. Locking post 1; 10. Locking post 2; 11. Rotating rod; 12. Slide groove 1; 13. Fixture; 14. Outer shell 2; 15. Connecting block; 16. Spring; 17. Connecting rod 1; 18. Limiting post 1; 19. Slide groove 2; 20. Slide groove 3; 21. Sliding column; 22. Rotating column; 23. Placement plate; 24. Limiting groove; 25. Limiting post 2; 26. Connecting piece; 27. Connecting rod 2. Detailed Implementation
[0033] 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.
[0034] Reference Figure 1 - Figure 3 The present invention provides an embodiment of a biosafety cabinet for classified storage, comprising a frame 1, an outer shell 2 inside the frame 1, the outer shell 2 being made of PP engineering plastic, PP material not only effectively prevents the spread of fire in the event of a fire, but also has sealing performance, which can isolate external dust, microorganisms and other harmful gases, a drawer 3 inside the outer shell 2, a stabilizing component inside the outer shell 2, which can effectively absorb vibrations from the outside, and a pop-out component inside the outer shell 2, which realizes the smooth pop-up and precise reset of the drawer 3 and other components;
[0035] The stabilizing component includes an electric push rod 5, the outer wall of which is located at the bottom of drawer 3. A movable block 6 is fixedly connected to the output end of the electric push rod 5. The inner wall of the movable block 6 is machined to form a sliding groove that matches the outer wall of the guide rail 7, ensuring smooth movement. Two guide rails 7 are installed inside the outer casing 2. The guide rails 7 are made of dense stainless steel, which not only improves their wear resistance but also makes their surface smoother, further reducing the resistance of the movable block 6 during sliding. The inner wall of the movable block 6 is slidably connected to the outer wall of one of the guide rails 7. A retaining post 2 10 is rotatably connected to the top of the movable block 6 via a bearing. A rotating rod 11 is fixedly connected to one side of the retaining post 2 10. The rotating rod 11 is made of hollow aluminum alloy tubing. This design effectively reduces the weight of the rotating rod 11 while ensuring its strength. The rotating rod 11 is more flexible during rotation. Two moving blocks 8 are slidably connected to the outer wall of the other guide rail 7. They are made of the same material as moving block 6 to ensure the consistency of the strength of the entire stabilizing component. On the other side of the rotating rod 11, a locking post 9 is rotatably connected via the same bearing. The bottom of the locking post 9 is fixedly connected to the top of the moving block 8. A clamp 13 is fixedly connected to the top of the moving block 8. The clamp 13 is made of a stainless steel frame composite. The silicone part can fit tightly against the surface of the sample box, providing a stable clamping force while avoiding scratches to the sample box. A sliding groove 12 is opened inside the outer shell 2. The outer wall of the clamp 13 is slidably connected to the inner wall of the sliding groove 12 to achieve precise clamping and positioning of the sample box. This effectively prevents the sample box from shaking and colliding during the operation of the biosafety cabinet, ensuring the safety and stability of the sample.
[0036] Specifically, during the operation of the biosafety cabinet, the operation of various instruments and equipment, as well as the actions of the operators, can easily cause shaking. At this time, the electric push rod 5 is activated, which drives the moving block 6 to move. The moving block 6 then slides smoothly above the guide rail 7, which in turn drives the rotating rod 11 to rotate smoothly. The rotation of the rotating rod 11 then drives the moving block 8 to move, causing the moving block 8 to displace on the outer wall of the guide rail 7. The movement of the moving block 8 then drives the clamp 13 to move. The clamp 13 slides inside the slide groove 12, quickly and stably clamping the sample box, effectively preventing the sample box from shaking or colliding within the frame 1, avoiding damage or leakage of the sample due to collision, and ensuring the integrity and stability of the sample.
[0037] Reference Figure 1 , Figure 4 and Figure 5The outer shell 2 is internally fixed to a slider 4 by high-strength stainless steel bolts. Slider 4 is made of self-lubricating polytetrafluoroethylene (PTFE), a material with a low coefficient of friction and good chemical stability, effectively resisting the corrosive effects of various chemical reagents present in the biosafety cabinet and ensuring long-term stable operation. A drawer 3 is slidably connected to the top of slider 4. The drawer 3 is made of PP (polypropylene) engineering plastic. PP material is not only corrosion-resistant, preventing damage in complex experimental environments, but also has insulating properties, effectively preventing external factors from affecting the items inside the cabinet. Meanwhile, it is lightweight, making it convenient for operators to use daily. The ejection assembly includes a second outer shell 14, the outer wall of which is set on the inner wall of the first outer shell 2. A connecting block 15 is set inside the second outer shell 14, and a spring 16 is sleeved on the outer wall of the connecting block 15. When subjected to external force, the spring 16 can effectively store and release energy, providing key power for the normal operation of the ejection assembly. One end of the spring 16 is fixedly connected to the inside of the second outer shell 14, and the other end of the spring 16 is fixedly connected to the connecting block 15. A connecting rod 17 is rotatably connected to the top of the second outer shell 14, and the bottom of the connecting rod 17 is connected by a thread. The connection block 15 is fixedly connected to a limiting post 18, which is made of alloy steel and has a hardened surface for wear resistance. A sliding groove 20 is provided inside the connecting block 15, allowing the outer wall of the limiting post 18 to slide within it, thus achieving position control and limiting functions. A sliding post 21 is fixedly connected inside the connecting block 15, and a sliding groove 29 is provided inside the connecting block 15. The size and shape of the sliding groove 29 match that of the sliding post 21, ensuring that the sliding post 21 can move stably within it. A placement plate 23 is fixedly connected to the bottom of the connecting block 15, and the outer wall of the placement plate 23 is slidably connected to the sliding groove 21. The inner wall of the 9th layer allows the placement plate 23 to move up and down. The bottom of the outer shell 14 is rotatably connected to a rotating column 22. A connector 26 is fixedly connected to the outer wall of the rotating column 22. The side wall of the connector 26 is fixedly connected to a limiting column 25 by welding. A limiting groove 24 is opened inside the placement plate 23. The outer wall of the limiting column 25 is slidably connected to the inner wall of the limiting groove 24. A connecting rod 27 is fixedly connected to one side of the connector 26. The connecting rod 27 is made of stainless steel and its outer wall is slidably connected to the bottom of the drawer 3, realizing the automatic pop-up and closing function of the drawer 3, which improves the operation convenience of the biosafety cabinet.
[0038] Specifically, in biosafety experiments, operators typically wear heavy and cumbersome protective gear for safety reasons. This makes manually operating drawer 3 inconvenient, and frequent hand contact with drawer 3 during operation can easily lead to cross-contamination. When drawer 3 is pressed, it moves the sliding column 21, which in turn moves the connecting block 15, causing the spring 16 to retract. The spring 16 then moves the connecting rod 17, which in turn pushes the limiting post 18 to slide inside the slide groove 20 until the limiting post 18 is engaged on the left side of the slide groove 20. Simultaneously, the connector 26 at the bottom of the outer shell 2 14 begins to rotate, causing the limiting post 25 to move inside the limiting groove 24. The placement plate 23 also slides inside the slide groove 2 19. The connecting rod 27 disengages from the bottom of the drawer 3, and the drawer 3 automatically pops out. When the drawer 3 is pressed again, the spring 16 is compressed, the limiting post 18 is locked on the right side of the slide groove 3 20, the limiting post 25 slides in the limiting groove 24, and the connecting rod 27 is locked at the bottom of the drawer 3, closing the drawer 3 and completing the opening and closing operation of the drawer 3. This avoids operational errors or sample damage caused by opening the drawer 3 after placing items, improves work efficiency, and makes the experimental operation smoother.
[0039] Working principle: During the operation of the biosafety cabinet, shaking may occur. At this time, the electric push rod 5 is activated, which drives the moving block 6 to move. The moving block 6 then slides above the guide rail 7, which in turn drives the rotating rod 11 to rotate, thereby driving the moving block 8 to move. The moving block 8 then moves against the outer wall of the guide rail 7, which in turn drives the clamp 13 to move, thereby causing the clamp 13 to slide inside the slide groove 12. This clamps the sample box, preventing it from shaking or colliding within the frame 1, thus avoiding sample damage or leakage and ensuring the integrity and stability of the sample.
[0040] In biosafety experiments, operators typically wear protective gear. Manually operating drawer 3 is inconvenient and could cause contamination. Pressing drawer 3 moves sliding column 21, which in turn moves connecting block 15, causing spring 16 to retract and connecting rod 17 to shift. This causes limiting column 18 to slide within slide groove 20, locking it on the left side. Simultaneously, connecting piece 26 at the bottom of outer casing 14 rotates, causing limiting column 25 to shift within limiting groove 24, and finally moving placement plate 23 within slide groove 14. The internal sliding mechanism 9 causes the connecting rod 27 to disengage from the bottom of drawer 3, allowing drawer 3 to pop out automatically. When drawer 3 is pressed again, spring 16 is compressed, causing limit post 18 to engage on the right side of slide groove 20. Simultaneously, limit post 25 slides within limit groove 24, causing connecting rod 27 to engage at the bottom of drawer 3, thus closing drawer 3. This allows experimenters to easily place items into or retrieve items from drawer 3, making operation smoother, improving work efficiency, and avoiding operational errors or sample damage caused by having to put down items to open drawer 3.
[0041] 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 categorized storage, comprising a rack (1), characterized in that: The frame (1) is provided with a first outer shell (2), the first outer shell (2) is provided with a drawer (3), the first outer shell (2) is provided with a stabilizing component, and the first outer shell (2) is provided with a pop-out component; The stabilizing component includes an electric push rod (5), the outer wall of which is located at the bottom of the drawer (3). The output end of the electric push rod (5) is fixedly connected to a moving block (6). The outer shell (2) is provided with a guide rail (7). The inner wall of the moving block (6) is slidably connected to the outer wall of the guide rail (7). The top of the moving block (6) is rotatably connected to a locking post (10). One side of the locking post (10) is fixedly connected to a rotating rod (11). The outer wall of the other guide rail (7) is slidably connected to two moving blocks (8). The other side of the rotating rod (11) is rotatably connected to a locking post (9). The bottom of the locking post (9) is fixedly connected to the top of the moving block (8). The top of the moving block (8) is fixedly connected to a clamp (13). The outer shell (2) is provided with a sliding groove (12). The outer wall of the clamp (13) is slidably connected to the inner wall of the sliding groove (12).
2. The biosafety cabinet for classified storage according to claim 1, characterized in that: The first outer shell (2) is fixedly connected to a slider (4), the bottom of the drawer (3) is slidably connected to a slider (4), the pop-out component includes a second outer shell (14), the outer wall of the second outer shell (14) is disposed on the inner wall of the first outer shell (2), and a connecting block (15) is disposed inside the second outer shell (14).
3. A biosafety cabinet for classified storage according to claim 2, characterized in that: A spring (16) is fitted on the outer wall of the connecting block (15). One end of the spring (16) is fixedly connected to the inside of the outer shell (14), and the other end of the spring (16) is fixedly connected to the connecting block (15).
4. A biosafety cabinet for classified storage according to claim 3, characterized in that: The top of the outer shell 2 (14) is rotatably connected to a connecting rod 1 (17), and the bottom of the connecting rod 1 (17) is fixedly connected to a limiting post 1 (18). The connecting block (15) has a sliding groove 3 (20) inside, and the outer wall of the limiting post 1 (18) is slidably connected to the inner wall of the sliding groove 3 (20).
5. A biosafety cabinet for classified storage according to claim 4, characterized in that: The connecting block (15) is fixedly connected to a sliding column (21), and the connecting block (15) is provided with a second sliding groove (19). The bottom of the connecting block (15) is fixedly connected to a placement plate (23), and the outer wall of the placement plate (23) is slidably connected to the inner wall of the second sliding groove (19).
6. A biosafety cabinet for classified storage according to claim 5, characterized in that: The bottom of the outer shell (14) is rotatably connected to a rotating column (22), and a connector (26) is fixedly connected to the outer wall of the rotating column (22). The side wall of the connector (26) is fixedly connected to a limit column (25).
7. A biosafety cabinet for classified storage according to claim 6, characterized in that: The placement plate (23) has a limiting groove (24) inside, and the outer wall of the limiting post (25) is slidably connected to the inner wall of the limiting groove (24).
8. A biosafety cabinet for classified storage according to claim 7, characterized in that: One side of the connector (26) is fixedly connected to a connecting rod two (27), and the outer wall of the connecting rod two (27) is slidably connected to the bottom of the drawer (3).