Biological safety cabinet with filtering structure

Abstract

The invention provides a biological safety cabinet with a filtering structure, and relates to the technical field of biological safety cabinets, the biological safety cabinet comprises a biological safety cabinet, the bottom of the inner side wall of the biological safety cabinet is provided with a liquid leakage groove, and the cross section of the liquid leakage groove is trapezoidal; a first filtering frame, a second filtering frame and a third filtering frame are sequentially installed in the liquid leakage groove from top to bottom, a first disinfection frame is installed in the biological safety cabinet, first motors driving the first disinfection frame to ascend and descend are arranged on the left side and the right side of the first disinfection frame, and spraying is conducted through spraying faucets; the first disinfection frame moves downwards to drive the side supporting frame on the back face to move downwards, the side supporting frame moves downwards to drive the cleaning roller and the cleaning shovel to wipe the inner wall of the biological safety cabinet, and meanwhile the spraying faucet sprays disinfectant to disinfect the inner wall of the biological safety cabinet. Therefore, manual disinfection is not needed, and the safety after the biological test is used is greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of biological safety cabinets, and more specifically, particularly relates to a biological safety cabinet with a filtering structure. Background Art

[0002] In the field of biological experiments and research, biological safety cabinets are important equipment to ensure the safety of experimenters and the environment. However, after the use of biological safety cabinets, the internal disinfection work faces a series of challenges.

[0003] Traditional biosafety cabinet disinfection methods often rely on manual operations, which are not only inefficient but also prone to incomplete disinfection, increasing the safety risks of biological experiments.

[0004] The disinfectant used in the disinfection process lacks effective filtration during its falling process, which may cause impurities in the liquid to fall with it, causing pollution and making subsequent cleaning work difficult.

[0005] When it comes to cleaning the inner walls of biological safety cabinets, existing cleaning tools and methods have limitations. It is difficult to effectively remove large foreign matter and harder particles, and it is also impossible to fully ensure the cleanliness of the inner walls.

[0006] Moreover, when spraying disinfectant, existing disinfection devices usually have problems such as limited spraying range and disinfection dead corners, and cannot achieve comprehensive and uniform disinfection, which affects the disinfection effect and the biosafety of the biosafety cabinet. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides a biological safety cabinet with a filtering structure to solve the above problems.

[0008] A biological safety cabinet with a filtering structure comprises the biological safety cabinet, wherein a leakage groove is provided at the bottom of the inner side wall of the biological safety cabinet, the cross-section of the leakage groove is in a trapezoidal shape, a first filter frame, a second filter frame and a third filter frame are sequentially installed inside the leakage groove from top to bottom, a first disinfection frame is installed inside the biological safety cabinet, the left and right sides of the first disinfection frame both drive a first motor for self-lifting, a cleaning roller and a cleaning shovel are provided on the back of the first disinfection frame, the cleaning shovel is located below the cleaning roller, and the sides of the cleaning shovel and the cleaning roller are both in contact with the wall surface of the biological safety cabinet, and at least two movable spray taps are provided inside the first disinfection frame.

[0009] Preferably, the widths of the first filter frame, the second filter frame and the third filter frame decrease successively from top to bottom, and the side walls of the first filter frame, the second filter frame and the third filter frame are all fitted with the inner wall of the leakage trough, the second filter frame and the third filter frame are fixedly installed with magnetic blocks on the top, the magnetic block on the top of the third filter frame is fitted with the bottom of the second filter frame, and the magnetic block on the top of the second filter frame is fitted with the bottom of the first filter frame, the top of each of the first motors is fixedly embedded in the biosafety cabinet, the end of the output shaft of each of the first motors is fixedly installed with a first threaded rod, and the bottom of each of the first threaded rods is rotatably connected to the bottom of the biosafety cabinet.

[0010] Preferably, side transmission frames are fixedly installed on the left and right side walls of the first disinfection rack, and each of the side transmission frames is arranged outside the first threaded rod through a threaded sleeve. Two side support frames are fixedly installed on the side walls of the first disinfection rack, and the two ends of the cleaning roller are rotatably connected to the two side support frames, and the upper parts of the two ends of the cleaning shovel are fixedly connected to the lower parts of the side support frames, and there is a certain distance between the top of the blade head of each cleaning shovel and the cleaning roller.

[0011] Preferably, a second motor is fixedly mounted on the inner side wall of the first disinfection rack, a second threaded rod is fixedly mounted on the output shaft of the second motor, an end of the second threaded rod is rotatably connected to the inner wall of the first disinfection rack, at least two mobile bins are provided on the surface of the second threaded rod through a threaded sleeve, each of the spray faucets is installed inside the mobile bin, a hollow groove is provided inside each of the mobile bins, a third motor is installed inside each of the hollow grooves, and a spray faucet is fixedly mounted outside the output shaft of each of the third motors.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In the present invention, the first threaded rod rotates through two side transmission frames to drive the first disinfection frame to move downward. When the first disinfection frame moves downward, the water pump of the water tank in the biological safety cabinet is started, and the water pump transmits the disinfectant in the water tank to the spray faucet through the water pipe, and then sprays it out through the spray faucet. The first disinfection frame moves downward to drive the side support frame on the back to move downward. The side support frame moves downward to drive the cleaning roller and the cleaning shovel to wipe the inner wall of the biological safety cabinet. At the same time, the spray faucet sprays the disinfectant to disinfect the inner wall of the biological safety cabinet. By using the spray faucet to disinfect the inner wall of the biological safety cabinet, there is no need for manual disinfection, which greatly improves the safety of biological experiments after use.

[0014] In the present invention, when the disinfectant falls, the disinfectant will flow into the leakage groove opened at the bottom of the biosafety cabinet. Since the first filter frame, the second filter frame and the third filter frame are arranged in the leakage groove, the falling liquid will be filtered by multiple layers, which effectively prevents impurities in the liquid from falling, and can help users clean solid experimental objects to prevent contamination.

[0015] In the present invention, the trapezoidal structure design is adopted for the leakage trough, so that the user can conveniently install the first filter frame, the second filter frame and the third filter frame without the need for fixed structure design, thereby reducing the hindrance of the structure to the falling of the liquid. At the same time, the tops of the second filter frame and the third filter frame are designed with magnetic blocks. Therefore, when the first filter frame is pulled upward to leave the leakage trough, the magnetic force of the magnetic block will drive the second filter frame and the third filter frame below to leave the magnetic block at the same time, which effectively facilitates the replacement and maintenance of the first filter frame, the second filter frame and the third filter frame.

[0016] In the present invention, when the first disinfection rack moves downward, the cleaning shovel first scrapes and cleans the interior of the biosafety cabinet, effectively cleaning large particles of foreign matter and cleaning harder particles at the same time, and then the cleaning roller rolls and brushes the inner wall of the biosafety cabinet to further improve the cleanliness of the inner wall of the biosafety cabinet.

[0017] In the present invention, in order to improve the cleaning degree of the inner wall of the biological safety cabinet, the second motor inside the first disinfection rack is started, and the operation of the second motor drives the second threaded rod to rotate, and the rotation of the second threaded rod drives multiple mobile bins to move inside the first disinfection rack. The second motor can rotate forward and reverse. At this time, the mobile bin moves horizontally left and right in the first disinfection rack. The movement of the mobile bin can drive the spray faucet to move horizontally. The spray faucet can move back and forth to disinfect the inner wall of the biological safety cabinet, which effectively reduces the dead angle of disinfection and further improves the cleaning capacity.

[0018] In the present invention, the third motor inside the mobile warehouse is started, and the third motor starts to drive the spray faucet to rotate. The third motor can rotate forward and reverse, thereby driving the spray faucet to rotate up and down inside the mobile warehouse, further expanding the range of disinfection spraying inside the biological safety cabinet, further improving the disinfection capacity, and improving the biological safety of the biological safety cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the biological safety cabinet of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the first disinfection rack of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the cleaning roller of the present invention;

[0022] Figure 4It is a schematic diagram of the side support structure of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the mobile warehouse of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the first filter frame of the present invention.

[0025] In the figure, the correspondence between the component names and the figure numbers is: 1. Biological safety cabinet; 11. Support legs; 12. First motor; 13. First threaded rod; 14. First disinfection rack; 15. Side support frame; 16. Cleaning roller; 17. Cleaning shovel; 18. Second motor; 19. Second threaded rod; 2. Mobile bin; 21. Third motor; 22. Spray faucet; 23. Leakage trough; 24. First filter rack; 25. Second filter rack; 26. Magnetic block; 27. Third filter rack; 29. ​​Hollow slot; 3. Side transmission frame. DETAILED DESCRIPTION

[0026] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] See also Figure 1-Figure 6 The present invention provides a biological safety cabinet with a filtering structure, including a biological safety cabinet 1, a support leg 11 is installed at the bottom of the biological safety cabinet 1, a water tank is installed inside the biological safety cabinet 1, the water tank is connected to each mobile bin 2 through a water pipe, and the water pipe passes through the mobile bin 2 and is connected to a spray faucet 22, a leakage groove 23 is opened at the bottom of the inner side wall of the biological safety cabinet 1, the cross-section of the leakage groove 23 is a trapezoid, and the first filter frame 24, the second filter frame 25 and the third filter frame 27 are installed in sequence from top to bottom in the leakage groove 23, the water pump transmits the disinfectant in the water tank to the spray faucet 22 through the water pipe, and then sprays it out through the spray faucet 22, and the first disinfection frame 14 moves downward with The side support frame 15 on the back side moves downward, and the side support frame 15 moves downward to drive the cleaning roller 16 and the cleaning shovel 17 to wipe the inner wall of the biological safety cabinet 1. At the same time, the spray faucet 22 sprays disinfectant to disinfect the inner wall of the biological safety cabinet 1. A first disinfection rack 14 is installed inside the biological safety cabinet 1. The left and right sides of the first disinfection rack 14 both drive the first motor 12 that lifts itself. A cleaning roller 16 and a cleaning shovel 17 are arranged on the back side of the first disinfection rack 14. The cleaning shovel 17 is located below the cleaning roller 16, and the sides of the cleaning shovel 17 and the cleaning roller 16 are both in contact with the wall surface of the biological safety cabinet 1. At least two movable spray faucets 22 are arranged inside the first disinfection rack 14.

[0028] The widths of the first filter frame 24, the second filter frame 25 and the third filter frame 27 decrease from top to bottom, and the side walls of the first filter frame 24, the second filter frame 25 and the third filter frame 27 are all fitted with the inner wall of the leakage groove 23. The second filter frame 25 and the third filter frame 27 are fixedly installed with magnetic blocks 26 on their tops, the magnetic blocks 26 on the tops of the third filter frame 27 are fitted with the bottoms of the second filter frame 25, and the magnetic blocks 26 on the tops of the second filter frame 25 are fitted with the bottoms of the first filter frame 24. Since the first filter frame 24, the second filter frame 25 and the third filter frame 27 are arranged in the leakage groove 23, the falling liquid will be filtered by multiple layers, effectively preventing impurities in the liquid from falling. The top of each first motor 12 is fixedly embedded in the biosafety cabinet 1, and the end of the output shaft below each first motor 12 is fixedly installed with a first threaded rod 13, and the bottom of each first threaded rod 13 is rotatably connected to the bottom of the biosafety cabinet 1.

[0029] Side transmission frames 3 are fixedly installed on the left and right side walls of the first disinfection rack 14, and each side transmission frame 3 is arranged outside the first threaded rod 13 through a threaded sleeve. Two side support frames 15 are fixedly installed on the side walls of the first disinfection rack 14, and both ends of the cleaning roller 16 are rotatably connected to the two side support frames 15. The second threaded rod 19 rotates to drive multiple mobile bins 2 to move inside the first disinfection rack 14, and the second motor 18 can rotate forward and reverse. At this time, the mobile bin 2 moves horizontally left and right in the first disinfection rack 14. The movement of the mobile bin 2 can drive the spray faucet 22 to move horizontally, and the spray faucet 22 can move back and forth to disinfect the inner wall of the biological safety cabinet 1. The tops of both ends of the cleaning shovel 17 are fixedly connected to the bottom of the side support frames 15, and there is a certain interval between the top of the blade head of each cleaning shovel 17 and the cleaning roller 16.

[0030] A second motor 18 is fixedly installed on the inner wall of the first disinfection rack 14, and a second threaded rod 19 is fixedly installed on the output shaft of the second motor 18. The end of the second threaded rod 19 is rotatably connected to the inner wall of the first disinfection rack 14, and at least two mobile bins 2 are provided on the surface of the second threaded rod 19 through a threaded sleeve. Each spray faucet 22 is installed inside the mobile bin 2, and a hollow groove 29 is opened inside each mobile bin 2. A third motor 21 is installed inside each hollow groove 29, and a spray faucet 22 is fixedly installed outside the output shaft of each third motor 21.

[0031] Working principle:

[0032] The user performs biological experiments inside the biological safety cabinet 1. After the use is completed, the two first motors 12 inside the biological safety cabinet 1 are started. The two first motors 12 are started to drive the first threaded rods 13 to rotate. The first threaded rods 13 rotate and drive the first disinfection rack 14 to move downward through the two side transmission frames 3. When the first disinfection rack 14 moves downward, the water pump of the water tank in the biological safety cabinet 1 is started. The water pump transmits the disinfectant in the water tank to the spray faucet 22 through the water pipe, and then sprays it out through the spray faucet 22. The first disinfection rack 14 moves downward to drive the side support frame 15 on the back to move downward. The side support frame 15 moves downward to drive the cleaning roller 16 and the cleaning shovel 17 to wipe the inner wall of the biological safety cabinet 1. At the same time, the spray faucet 22 sprays the disinfectant to disinfect the inner wall of the biological safety cabinet 1. By using the spray faucet 22 to disinfect the inner wall of the biological safety cabinet 1, there is no need for manual disinfection, which greatly improves the safety of the biological experiment after use;

[0033] When the disinfectant falls, the disinfectant will flow into the leakage groove 23 provided at the bottom of the biosafety cabinet 1. Since the first filter frame 24, the second filter frame 25 and the third filter frame 27 are provided in the leakage groove 23, the falling liquid will be filtered by multiple layers, effectively preventing impurities in the liquid from falling, and can help the user clean the solid experimental objects to prevent contamination.

[0034] The leakage tank 23 adopts a trapezoidal structure design, which can facilitate the user to install the first filter frame 24, the second filter frame 25 and the third filter frame 27 without the need for a fixed structure design, thereby reducing the obstruction of the structure to the liquid falling. At the same time, the second filter frame 25 and the third filter frame 27 are designed with a magnetic block 26 on the top, so when the first filter frame 24 is pulled upward to leave the leakage tank 23, the magnetic force of the magnetic block 26 will drive the second filter frame 25 and the third filter frame 27 below to leave the magnetic block 26 at the same time, which effectively facilitates the replacement and maintenance of the first filter frame 24, the second filter frame 25 and the third filter frame 27;

[0035] When the first disinfection rack 14 moves downward, the cleaning shovel 17 first scrapes and cleans the interior of the biosafety cabinet 1, effectively cleaning large particles of foreign matter and cleaning hard particles at the same time, and then the cleaning roller 16 rolls and brushes the inner wall of the biosafety cabinet 1 to further improve the cleanliness of the inner wall of the biosafety cabinet 1;

[0036] When the first disinfection rack 14 moves downward, in order to improve the cleaning degree of the inner wall of the biological safety cabinet 1, the second motor 18 inside the first disinfection rack 14 is started, and the operation of the second motor 18 drives the second threaded rod 19 to rotate, and the rotation of the second threaded rod 19 drives the multiple mobile bins 2 to move inside the first disinfection rack 14. The second motor 18 can be reversed, and the mobile bin 2 moves horizontally left and right in the first disinfection rack 14. The movement of the mobile bin 2 can drive the spray faucet 22 to move horizontally, and the spray faucet 22 can move back and forth to disinfect the inner wall of the biological safety cabinet 1, which effectively reduces the dead angle of disinfection and further improves the cleaning ability;

[0037] When the spray faucet 22 sprays and disinfects the inner wall of the biosafety cabinet 1, the third motor 21 inside the mobile warehouse 2 is started, and the third motor 21 starts to drive the spray faucet 22 to rotate. The third motor 21 can rotate forward and reverse, thereby driving the spray faucet 22 to rotate up and down inside the mobile warehouse 2, further increasing the range of disinfection spraying inside the biosafety cabinet 1, further improving the disinfection capacity, and improving the biosafety of the biosafety cabinet 1.

[0038] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A biological safety cabinet with a filtering structure, comprising a biological safety cabinet (1), characterized in that: A liquid leakage groove (23) is provided at the bottom of the inner wall of the biological safety cabinet (1), the cross-section of the liquid leakage groove (23) is in the shape of a trapezoid, and a first filter frame (24), a second filter frame (25) and a third filter frame (27) are sequentially installed inside the liquid leakage groove (23) from top to bottom; The biological safety cabinet (1) is provided with a first disinfection rack (14) installed inside, and the left and right sides of the first disinfection rack (14) are both driven by a first motor (12) for lifting and lowering the first disinfection rack (14). A cleaning roller (16) and a cleaning shovel (17) are arranged on the back of the first disinfection rack (14), and the cleaning shovel (17) is located below the cleaning roller (16), and the sides of the cleaning shovel (17) and the cleaning roller (16) are both in contact with the wall surface of the biological safety cabinet (1), and at least two movable spray taps (22) are arranged inside the first disinfection rack (14).

2. A biological safety cabinet with a filtering structure as claimed in claim 1, characterized in that: The widths of the first filter frame (24), the second filter frame (25) and the third filter frame (27) decrease sequentially from top to bottom, and the side walls of the first filter frame (24), the second filter frame (25) and the third filter frame (27) are all in contact with the inner wall of the liquid leakage groove (23).

3. A biological safety cabinet with a filtering structure as claimed in claim 2, characterized in that: A magnetic block (26) is fixedly mounted above the second filter frame (25) and the third filter frame (27); the magnetic block (26) at the top of the third filter frame (27) fits with the bottom of the second filter frame (25); and the magnetic block (26) at the top of the second filter frame (25) fits with the bottom of the first filter frame (24).

4. A biological safety cabinet with a filtering structure as claimed in claim 1, characterized in that: The top of each first motor (12) is fixedly embedded in the biosafety cabinet (1), the end of the output shaft of each first motor (12) is fixedly mounted with a first threaded rod (13), and the bottom of each first threaded rod (13) is rotatably connected to the bottom of the biosafety cabinet (1).

5. A biological safety cabinet with a filtering structure as claimed in claim 4, characterized in that: Side transmission frames (3) are fixedly mounted on the left and right side walls of the first disinfection rack (14), and each of the side transmission frames (3) is threadedly sleeved on the outside of the first threaded rod (13).

6. A biological safety cabinet with a filtering structure as claimed in claim 1, characterized in that: Two side support frames (15) are fixedly mounted on the side wall of the first disinfection rack (14), and both ends of the cleaning roller (16) are rotatably connected to the two side support frames (15).

7. A biological safety cabinet with a filtering structure as claimed in claim 6, characterized in that: The upper parts of both ends of the cleaning shovel (17) are fixedly connected to the lower part of the side support frame (15), and there is a certain distance between the top of the blade of each cleaning shovel (17) and the cleaning roller (16).

8. A biological safety cabinet with a filtering structure as claimed in claim 1, characterized in that: A second motor (18) is fixedly mounted on the inner wall of the first disinfection rack (14); a second threaded rod (19) is fixedly mounted on the output shaft of the second motor (18); and an end of the second threaded rod (19) is rotatably connected to the inner wall of the first disinfection rack (14).

9. A biological safety cabinet with a filtering structure as claimed in claim 8, characterized in that: The surface of the second threaded rod (19) is provided with at least two movable bins (2) via a threaded sleeve, and each of the spray faucets (22) is installed inside the movable bin (2).

10. A biological safety cabinet with a filtering structure as claimed in claim 9, characterized in that: A hollow groove (29) is provided inside each of the mobile bins (2), a third motor (21) is installed inside each of the hollow grooves (29), and a spray faucet (22) is fixedly installed outside the output shaft of each of the third motors (21).

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