Biological safety cabinet

Abstract

The utility model discloses a biosafety cabinet which comprises a base, the top of the base is fixedly connected with a biosafety cabinet body, the outer wall of the biosafety cabinet body is rotatably connected with a protective door, the outer wall of one side of the protective door is fixedly connected with a first sealing strip, and the front face of the biosafety cabinet body is fixedly connected with an air bag. A mounting box is fixedly connected to the outer wall of one side of the biological safety cabinet main body, an air conveying pump is fixedly connected to the interior of the mounting box, and a supporting plate is fixedly connected to the inner side wall of the base. According to the biological safety cabinet, air can be conveyed to the air bag through the operation of the air conveying pump, and the connection part of the protective door and the biological safety cabinet main body is sealed again through the expansion of the air bag, so that the sealing performance of the connection between the protective door and the biological safety cabinet main body is ensured; the phenomenon of gas leakage between the biosafety cabinet and the protective door can be avoided, and gas of an experimental sample in the biosafety cabinet main body is prevented from leaking out.

Description

Technical Field

[0001] The utility model relates to the technical field of biological safety cabinets, in particular to a biological safety cabinet. Background Art

[0002] A biological safety cabinet is a laboratory equipment that protects workers from infection by pathogenic microorganisms in sample handling. It prevents the emission of aerosols containing certain dangerous or unknown biological particles during experimental operations. However, existing biological safety cabinets still have certain defects when used.

[0003] The defects of biological safety cabinets in the prior art are:

[0004] At present, patent document CN219596649U discloses a biological safety cabinet, which relates to the field of biological safety protection technology. The utility model includes a cabinet, an operating area is arranged in the cabinet, a bellows is arranged in the cabinet above the operating area, the bellows is connected to a disinfectant storage barrel through a pipeline, one end of the disinfectant storage barrel is connected to a pressure regulating valve through a hose, the pressure regulating valve is connected to an infrared disinfector and a handheld disinfector through an external drainage pipe and an internal drainage pipe, respectively, the infrared disinfector is fixedly connected to the outside of the cabinet, and the handheld disinfector is detachably connected to the inside of the operating area. The biological safety cabinet of the utility model is not only convenient for disinfection and saves disinfectant, but also can avoid hand fatigue during disinfection.

[0005] When the biological safety cabinet in the above document is in use, although it is connected to an infrared sterilizer and a handheld sterilizer through an external drain pipe and an internal drain pipe respectively through a pressure regulating valve, and the infrared sterilizer is fixedly connected to the outer side of the cabinet, so that the biological safety cabinet is not only convenient for disinfection and saves disinfectant, but also can avoid hand fatigue during disinfection. However, when in use, the protective door of the biological safety cabinet is difficult to be tightly connected to the biological safety cabinet, so that when the staff does not process the experimental samples, there may be air leakage between the biological safety cabinet and the protective door, resulting in gas leakage from the biological safety cabinet, affecting the use of the staff. Utility Model Content

[0006] The purpose of the utility model is to provide a biological safety cabinet to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a biological safety cabinet, comprising a base, the top of the base is fixedly connected to a biological safety cabinet body, the outer wall of the biological safety cabinet body is rotatably connected to a protective door, one side outer wall of the protective door is fixedly connected to a first sealing strip, the front of the biological safety cabinet body is fixedly connected to an air bag, one side outer wall of the biological safety cabinet body is fixedly connected to an installation box, the interior of the installation box is fixedly connected to an air pump, and the output end of the air pump is connected to the air bag, the inner side wall of the base is fixedly connected to a support plate, the top of the support plate is slidably connected to a placement rack, and a processing box is arranged on the top of the biological safety cabinet body.

[0008] As a preferred technical solution of the utility model, a slide groove is provided on the top of the support plate, a limiting block is fixedly connected to the bottom of the placement rack, and the limiting block is slidably connected to the inner side of the slide groove, and a through hole is provided on the top of the limiting block.

[0009] As a preferred technical solution of the utility model, a mounting frame is slidably connected to the interior of the processing box, and a second sealing strip is fixedly connected to the top of the mounting frame.

[0010] As a preferred technical solution of the utility model, a HEPA filter is fixedly connected to the interior of the mounting frame, and an air outlet pipe is installed through the top of the processing box.

[0011] As a preferred technical solution of the utility model, a fixing bolt is installed through a thread on the outer wall of the processing box, and the bottom end of the fixing bolt abuts against the outer wall of the mounting frame.

[0012] As a preferred technical solution of the utility model, a connecting pipe is installed through the inner bottom wall of the processing box, and the bottom end of the connecting pipe is connected to the inner side of the top of the biological safety cabinet body, and an electric valve is provided on the outer wall of the top of the connecting pipe.

[0013] As a preferred technical solution of the utility model, an exhaust fan is fixedly connected to the inner bottom wall of the processing box, and the exhaust fan is located on one side of the top end of the connecting pipe.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The utility model can seal the connection between the protective door and the main body of the biosafety cabinet through the first sealing strip, and can supply air to the airbag through the operation of the air pump, and the connection between the protective door and the main body of the biosafety cabinet can be re-sealed through the expansion of the airbag, thereby ensuring the sealing of the connection between the protective door and the main body of the biosafety cabinet, so that when the staff does not process the experimental samples, the phenomenon of air leakage between the biosafety cabinet and the protective door can be avoided, and the gas of the experimental samples inside the main body of the biosafety cabinet can be prevented from leaking out.

[0016] 2. The utility model rotates the fixing bolt so that the bottom end of the fixing bolt is against the outer wall of the mounting frame, thereby ensuring the stability of the mounting frame on the inner side of the processing box and facilitating the staff to slide the mounting frame out from the inner side of the processing box, so as to facilitate the staff to process the HEPA filter inside the mounting frame and avoid the HEPA filter being left on for a long time, which may cause the filtering effect of the HEPA filter to be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of the biological safety cabinet of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the placement rack of the utility model;

[0020] Figure 4 This is a schematic diagram of the processing box structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the main body of the biological safety cabinet of the present utility model.

[0022] In the figure: 1. base; 2. main body of the biological safety cabinet; 3. protective door; 4. first sealing strip; 5. air bag; 6. installation box; 7. air pump; 8. support plate; 9. slide; 10. placement rack; 11. limit block; 12. through hole; 13. processing box; 14. fixing bolt; 15. installation rack; 16. HEPA filter; 17. second sealing strip; 18. exhaust pipe; 19. connecting pipe; 20. electric valve; 21. exhaust fan. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figures 1 to 5 , a biological safety cabinet:

[0025] The biosafety cabinet comprises a base 1, the top of which is fixedly connected to a biosafety cabinet body 2, an outer wall of which is rotatably connected to a protective door 3, an outer wall of one side of the protective door 3 is fixedly connected to a first sealing strip 4, an air bag 5 is fixedly connected to the front of the biosafety cabinet body 2, an installation box 6 is fixedly connected to an outer wall of one side of the biosafety cabinet body 2, an air pump 7 is fixedly connected to the interior of the installation box 6, and an output end of the air pump 7 is connected to the air bag 5, a support plate 8 is fixedly connected to the inner wall of the base 1, a placement rack 10 is slidably connected to the top of the support plate 8, and a processing box 13 is arranged on the top of the biosafety cabinet body 2.

[0026] The biological safety cabinet body 2 can be supported by the base 1, the front of the biological safety cabinet body 2 can be protected by the protective door 3, the connection between the protective door 3 and the biological safety cabinet body 2 can be sealed by the first sealing strip 4, the installation box 6 can provide an installation position for the air pump 7, the operation of the air pump 7 can supply air to the airbag 5, and the connection between the protective door 3 and the biological safety cabinet body 2 can be sealed again by the expansion of the airbag 5, so as to ensure the sealing of the connection between the protective door 3 and the biological safety cabinet body 2, the support plate 8 can provide an installation position for the placement rack 10, the placement rack 10 can provide a placement position for experimental samples, and the processing box 13 can process the air inside the biological safety cabinet body 2.

[0027] In a preferred embodiment, a slide groove 9 is opened on the top of the support plate 8, a limiting block 11 is fixedly connected to the bottom of the placement rack 10, and the limiting block 11 is slidably connected to the inner side of the slide groove 9, and a through hole 12 is opened on the top of the limiting block 11.

[0028] The limit block 11 is slidably connected to the inner side of the slide groove 9, thereby ensuring the stability of the connection between the placement rack 10 and the support plate 8, and making it convenient for the staff to take the placement rack 10 out from the inner side of the biosafety cabinet body 2. The through hole 12 allows the placement rack 10 to be ventilated normally to prevent the placement rack 10 from affecting the air discharge inside the biosafety cabinet body 2.

[0029] In a preferred embodiment, a mounting frame 15 is slidably connected to the interior of the processing box 13 , and a second sealing strip 17 is fixedly connected to the top of the mounting frame 15 .

[0030] The connection between the mounting frame 15 and the processing box 13 can be sealed by the second sealing strip 17 , thereby ensuring the sealing of the connection between the mounting frame 15 and the processing box 13 .

[0031] In a preferred embodiment, a HEPA filter 16 is fixedly connected to the interior of the mounting frame 15 , and an air outlet pipe 18 is installed through the top of the processing box 13 .

[0032] The internal gas entering the processing box 13 can be filtered through the HEPA filter 16, and the filtered gas is discharged through the outlet pipe 18, so that the gas inside the biological safety cabinet body 2 can be processed before being discharged.

[0033] In a preferred embodiment, a fixing bolt 14 is threadedly installed through the outer wall of the processing box 13 , and the bottom end of the fixing bolt 14 abuts against the outer wall of the mounting frame 15 .

[0034] By rotating the fixing bolt 14, the bottom end of the fixing bolt 14 is against the outer wall of the mounting frame 15, thereby ensuring the stability of the mounting frame 15 inside the processing box 13, and making it convenient for the staff to take the mounting frame 15 out from the inside of the processing box 13, so as to facilitate the staff to process the HEPA filter 16 inside the mounting frame 15, thereby avoiding the HEPA filter 16 from being left on for a long time, resulting in a reduction in the filtering effect of the HEPA filter 16.

[0035] In a preferred embodiment, a connecting pipe 19 is installed through the inner bottom wall of the processing box 13, and the bottom end of the connecting pipe 19 is connected to the inner side of the top of the biological safety cabinet body 2, and an electric valve 20 is provided on the outer wall of the top of the connecting pipe 19. An exhaust fan 21 is fixedly connected to the inner bottom wall of the processing box 13, and the exhaust fan 21 is located on one side of the top of the connecting pipe 19.

[0036] The electric valve 20 is opened and the exhaust fan 21 is operated. When the exhaust fan 21 is in operation, the gas inside the biosafety cabinet body 2 is transported to the inside of the processing box 13 through the connecting pipe 19, so that the gas inside the biosafety cabinet body 2 can be processed.

[0037] Working principle,

[0038] When the biosafety cabinet is in use, the placement rack 10 can provide a placement position for the experimental samples, which can then be opened by the electric valve 20, and then the exhaust fan 21 can be operated. When the exhaust fan 21 is in operation, the gas inside the biosafety cabinet body 2 can be transported to the inside of the processing box 13 through the connecting pipe 19, and the internal gas entering the processing box 13 can be filtered by the HEPA filter 16, and the filtered gas is discharged through the outlet pipe 18. When the experimental samples are placed in the inside of the biosafety cabinet body 2 without being processed, the front of the biosafety cabinet body 2 is protected by the protective door 3, and the connection between the protective door 3 and the biosafety cabinet body 2 can be sealed by the first sealing strip 4. The installation box 6 can provide an installation position for the air pump 7, and the air bag 5 can be supplied with air by the operation of the air pump 7. The connection between the protective door 3 and the biosafety cabinet body 2 is sealed again by the expansion of the air bag 5, thereby ensuring the sealing of the connection between the protective door 3 and the biosafety cabinet body 2, and avoiding the leakage of the gas inside the biosafety cabinet body 2 when the biosafety cabinet body 2 is not in use.

[0039] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A biological safety cabinet, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a biosafety cabinet body (2); the outer wall of the biosafety cabinet body (2) is rotatably connected to a protective door (3); one side outer wall of the protective door (3) is fixedly connected to a first sealing strip (4); the front of the biosafety cabinet body (2) is fixedly connected to an air bag (5); one side outer wall of the biosafety cabinet body (2) is fixedly connected to an installation box (6); the interior of the installation box (6) is fixedly connected to an air pump (7), and the output end of the air pump (7) is connected to the air bag (5); the inner side wall of the base (1) is fixedly connected to a support plate (8); the top of the support plate (8) is slidably connected to a placement rack (10); and the top of the biosafety cabinet body (2) is provided with a processing box (13).

2. A biological safety cabinet according to claim 1, characterized in that: A slide groove (9) is provided on the top of the support plate (8), a limit block (11) is fixedly connected to the bottom of the placement rack (10), and the limit block (11) is slidably connected to the inner side of the slide groove (9), and a through hole (12) is provided on the top of the limit block (11).

3. A biological safety cabinet according to claim 1, characterized in that: The interior of the processing box (13) is slidably connected to a mounting frame (15), and the top of the mounting frame (15) is fixedly connected to a second sealing strip (17).

4. A biological safety cabinet according to claim 3, characterized in that: A HEPA filter (16) is fixedly connected to the interior of the mounting frame (15), and an air outlet pipe (18) is installed through the top of the processing box (13).

5. A biological safety cabinet according to claim 3, characterized in that: A fixing bolt (14) is threadedly installed through the outer wall of the processing box (13), and the bottom end of the fixing bolt (14) abuts against the outer wall of the mounting frame (15).

6. A biological safety cabinet according to claim 1, characterized in that: A connecting pipe (19) is installed through the inner bottom wall of the processing box (13), and the bottom end of the connecting pipe (19) is connected to the inner side of the top end of the biological safety cabinet body (2), and an electric valve (20) is arranged on the outer wall of the top end of the connecting pipe (19).

7. A biological safety cabinet according to claim 1, characterized in that: An exhaust fan (21) is fixedly connected to the inner bottom wall of the processing box (13), and the exhaust fan (21) is located on one side of the top end of the connecting pipe (19).

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