Biosafety cabinet with protection function
By setting up the automatic coverage function of the limiting device and the light-shielding cloth in the biosafety cabinet, the user's safety hazards are solved when using the ultraviolet sterilization lamp, and effective protection of ultraviolet rays is achieved.
Patent Information
- Application Number
- CN202421117475.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-05-22
AI Technical Summary
When using ultraviolet sterilization lamps in existing biosafety cabinets, users need to leave the vicinity of the body to avoid the harm of ultraviolet rays, but they do not provide ultraviolet protection components, resulting in long-term exposure may pose safety hazards to users.
A biosafety cabinet with protective function was designed. By setting up limiting devices, limiting shells, stabilizing rods, springs and limiting slots, the automatic coverage of the light-shading cloth is achieved to prevent ultraviolet rays.
It effectively solves the safety hazards of users when using ultraviolet sterilization lamps and ensures ultraviolet protection during operation.
Smart Images
Figure CN222358504U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of biological safety cabinets, and in particular relates to a biological safety cabinet with a protective function. Background Art
[0002] A biological safety cabinet is a specially designed device, which is mainly used in laboratories to process samples that may contain harmful biological particles to prevent these particles from spreading into the environment, while also protecting the operator and the laboratory environment from contamination. In summary, the problems existing in the prior art are: when using a biological safety cabinet, it is first necessary to use alcohol to disinfect the tabletop, then put the experimental items into the safety cabinet, and then close the glass door and turn on the ultraviolet sterilization lamp. The test can be started after thirty minutes. When using the ultraviolet sterilization lamp, the user needs to leave the vicinity of the body to prevent ultraviolet rays from causing harm to the human body. If the user fails to leave immediately, long-term exposure to ultraviolet rays is likely to cause safety hazards to the user. However, the existing biological safety cabinets do not have components for protecting users from ultraviolet rays, so a biological safety cabinet with a protective function is proposed to solve the above problems. Utility Model Content
[0003] In view of the problems existing in the prior art, the utility model provides a biological safety cabinet with a protective function, which has the advantage of enabling the biological safety cabinet to protect the user from ultraviolet rays, and solves the problem that when using the existing biological safety cabinet, it is first necessary to use alcohol to disinfect the table top, then put the experimental items into the safety cabinet, and then close the glass door, turn on the ultraviolet sterilization lamp, and start the experiment after thirty minutes. When using the ultraviolet sterilization lamp, the user needs to leave the vicinity of the body to prevent ultraviolet rays from harming the human body. If the user fails to leave immediately, long-term exposure to ultraviolet rays is likely to cause safety hazards to the user. However, the existing biological safety cabinet does not have a component to protect the user from ultraviolet rays.
[0004] The utility model is implemented as follows: a biological safety cabinet with a protective function comprises a biological safety cabinet and a winding rod, the rear side of the winding rod is fixedly connected to the front side of the biological safety cabinet, the surface of the winding rod is sleeved with a winding drum, the surface of the winding drum is sleeved with a shading cloth, the top and bottom of the winding drum are fixedly connected with torsion springs, the opposite sides of the two torsion springs are fixedly connected to the surface of the winding rod, the right side of the shading cloth is fixedly connected with two handle shells, the front side of the biological safety cabinet is fixedly connected with a fixed shell used in conjunction with the handle shell, the surface of the fixed shell is in contact with the surface of the handle shell, the inner cavity of the fixed shell is movably connected with a control rack, the right side of the control rack passes through the fixed shell and extends to the outside of the inner cavity of the fixed shell, and the inner cavity of the fixed shell is provided with a limiting device.
[0005] As a preferred embodiment of the utility model, the limiting device includes two limiting shells, and the opposite sides of the two limiting shells both penetrate the fixed shell and extend to the outside of the inner cavity of the fixed shell. The inner cavity of the fixed shell is fixedly connected with two stabilizing rods used in conjunction with the limiting shells, and the surfaces of the stabilizing rods are in contact with the inner cavity of the limiting shell. The opposite sides of the two stabilizing rods are fixedly connected with springs, and the opposite sides of the two springs are fixedly connected to the surface of the limiting shell. By setting the limiting device, when the blackout cloth completely covers the front glass of the biological safety cabinet, the limiting device has a limiting effect on the position of the blackout cloth.
[0006] As a preferred embodiment of the utility model, the rear side of the inner cavity of the fixed shell is movably connected with two rotating toothed discs used in conjunction with the control rack through a rotating shaft, and the side of the rotating toothed disc away from the limiting shell is meshed with the surface of the control rack, and the inner cavity of the fixed shell is movably connected with two extrusion racks used in conjunction with the rotating toothed disc, and the surface of the extrusion rack is meshed with the surface of the rotating toothed disc. By arranging the rotating toothed disc and the extrusion rack, when the control rack moves, the rotating toothed disc will be driven to rotate along the surface of the extrusion rack through the rotating shaft, and the rotational force generated by the rotating toothed disc on the extrusion rack can drive the extrusion rack to move, and when the extrusion rack moves, an extrusion force can be generated on the extrusion hole.
[0007] As a preferred embodiment of the utility model, a movable hole is provided on the surface of the extrusion rack, and two movable blocks used in conjunction with the movable hole are fixedly connected to the rear side of the inner cavity of the fixed shell, and the surface of the movable block is movably connected to the inner cavity of the movable hole. By providing the movable hole and the movable block, when the extrusion rack moves, the movable hole can be driven to move along the surface of the movable block, and the coordinated use of the movable hole and the movable block has a limiting effect on the moving position of the extrusion rack.
[0008] As a preferred embodiment of the utility model, the surface of the limiting shell is provided with an extrusion hole used in conjunction with an extrusion rack, the surface of the extrusion rack is in contact with the inner cavity of the extrusion hole, and by providing the extrusion hole, the limiting shell can be driven to move when the extrusion hole is subjected to the extrusion force of the extrusion rack.
[0009] As a preferred embodiment of the utility model, the right side of the control rack is fixedly connected to an external shell, the inner cavity of the external shell is movably connected to an internal shell, the right side of the internal shell is fixedly connected to the inner cavity of the fixed shell, and by arranging the external shell and the internal shell, when the control rack moves, the external shell will be driven to move along the surface of the internal shell, and the coordinated use of the internal shell and the external shell has a limiting effect on the moving position of the control rack.
[0010] As a preferred embodiment of the utility model, a limiting groove used in conjunction with the limiting shell is provided on the opposite sides of the two handle shells, and the surface of the limiting shell is in contact with the inner cavity of the limiting groove. By setting the limiting groove, when the handle shell moves to a position in contact with the surface of the fixed shell, the control rack is released, and the restoring force generated by the spring restoring its shape will drive the limiting shell to be stuck into the inner cavity of the limiting groove. The coordinated use of the limiting shell and the limiting groove has a limiting effect on the position of the handle shell.
[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0012] 1. The utility model solves the problem that when using the existing biological safety cabinet, the table surface needs to be disinfected with alcohol first, and then the experimental items are placed in the safety cabinet, and then the glass door is closed and the ultraviolet sterilization lamp is turned on. The test can be started after thirty minutes. When using the ultraviolet sterilization lamp, the user needs to leave the vicinity of the body to prevent ultraviolet rays from harming the human body. If the user fails to leave immediately, long-term exposure to ultraviolet rays is likely to cause safety hazards to the user. However, the existing biological safety cabinet has no components for protecting the user from ultraviolet rays.
[0013] 2. The utility model sets a limit device, and the extrusion hole subjected to the extrusion force will drive the limit shell to move along the surface of the stabilizing rod. When the limit shell moves, the force generated causes the spring to undergo elastic deformation. The restoring force generated by the spring restoring its shape will drive the limit shell to be stuck into the inner cavity of the limit groove. The limit device has a limiting effect on the position of the blackout cloth. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of a three-dimensional structure provided by an embodiment of the utility model;
[0015] Figure 2 It is a three-dimensional schematic diagram of a winding rod, a fixed shell and a biological safety cabinet provided by an embodiment of the utility model;
[0016] Figure 3 It is a three-dimensional schematic diagram of the connection between the winding rod and the winding drum provided by the embodiment of the utility model;
[0017] Figure 4 It is a three-dimensional schematic diagram of a handle shell provided by an embodiment of the utility model;
[0018] Figure 5 It is a three-dimensional cross-sectional view of a fixing shell provided by an embodiment of the utility model.
[0019] In the figure: 1. Biological safety cabinet; 2. Winding rod; 3. Winding drum; 4. Shading cloth; 5. Torsion spring; 6. Handle shell; 7. Fixed shell; 8. Control rack; 9. Limit device; 901. Limit shell; 902. Stabilizing rod; 903. Spring; 10. Rotating gear disc; 11. Extrusion rack; 12. Moving hole; 13. Moving block; 14. Extrusion hole; 15. External shell; 16. Internal shell; 17. Limit groove. DETAILED DESCRIPTION
[0020] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.
[0021] The structure of the utility model is described in detail below in conjunction with the accompanying drawings.
[0022] like Figures 1 to 5 As shown, a biological safety cabinet with a protective function provided by an embodiment of the utility model comprises a biological safety cabinet 1 and a winding rod 2, the rear side of the winding rod 2 is fixedly connected to the front side of the biological safety cabinet 1, the surface of the winding rod 2 is sleeved with a winding drum 3, the surface of the winding drum 3 is sleeved with a shading cloth 4, the top and bottom of the winding drum 3 are fixedly connected with torsion springs 5, the opposite sides of the two torsion springs 5 are fixedly connected to the surface of the winding rod 2, the right side of the shading cloth 4 is fixedly connected with two handle shells 6, the front side of the biological safety cabinet 1 is fixedly connected with a fixed shell 7 used in conjunction with the handle shell 6, the surface of the fixed shell 7 is in contact with the surface of the handle shell 6, the inner cavity of the fixed shell 7 is movably connected with a control rack 8, the right side of the control rack 8 passes through the fixed shell 7 and extends to the outside of the inner cavity of the fixed shell 7, and the inner cavity of the fixed shell 7 is provided with a limiting device 9.
[0023] refer to Figure 5 The limiting device 9 includes two limiting shells 901, and the opposite sides of the two limiting shells 901 penetrate the fixed shell 7 and extend to the outside of the inner cavity of the fixed shell 7. The inner cavity of the fixed shell 7 is fixedly connected with two stabilizing rods 902 used in conjunction with the limiting shells 901. The surface of the stabilizing rod 902 contacts the inner cavity of the limiting shell 901, and the opposite sides of the two stabilizing rods 902 are fixedly connected with springs 903, and the opposite sides of the two springs 903 are fixedly connected to the surface of the limiting shell 901.
[0024] With the above solution, by providing the limiting device 9 , when the shading cloth 4 completely covers the front glass of the biosafety cabinet 1 , the limiting device 9 has a limiting effect on the position of the shading cloth 4 .
[0025] refer to Figure 5The rear side of the inner cavity of the fixed shell 7 is movably connected with two rotating gear discs 10 used in conjunction with the control rack 8 through a rotating shaft. The side of the rotating gear disc 10 away from the limiting shell 901 is meshed with the surface of the control rack 8. The inner cavity of the fixed shell 7 is movably connected with two extrusion racks 11 used in conjunction with the rotating gear disc 10. The surface of the extrusion rack 11 is meshed with the surface of the rotating gear disc 10.
[0026] The above scheme is adopted: by setting a rotating toothed disc 10 and an extrusion rack 11, when the control rack 8 moves, it will drive the rotating toothed disc 10 to rotate along the surface of the extrusion rack 11 through the rotating shaft. The rotational force generated by the rotating toothed disc 10 on the extrusion rack 11 can drive the extrusion rack 11 to move, and when the extrusion rack 11 moves, it can generate extrusion pressure on the extrusion hole 14.
[0027] refer to Figure 5 A moving hole 12 is opened on the surface of the extrusion rack 11, and two moving blocks 13 used in conjunction with the moving hole 12 are fixedly connected to the rear side of the inner cavity of the fixed shell 7, and the surface of the moving block 13 is movably connected to the inner cavity of the moving hole 12.
[0028] The above scheme is adopted: by setting the movable hole 12 and the movable block 13, when the extrusion rack 11 moves, the movable hole 12 can be driven to move along the surface of the movable block 13. The coordinated use of the movable hole 12 and the movable block 13 has a limiting effect on the moving position of the extrusion rack 11.
[0029] refer to Figure 5 The surface of the limiting shell 901 is provided with an extrusion hole 14 used in conjunction with the extrusion rack 11 , and the surface of the extrusion rack 11 contacts the inner cavity of the extrusion hole 14 .
[0030] The above solution is adopted: by providing the extrusion hole 14 , when the extrusion hole 14 is subjected to the extrusion force of the extrusion rack 11 , the limiting shell 901 can be driven to move.
[0031] refer to Figure 5 The right side of the control rack 8 is fixedly connected to an outer shell 15 , the inner cavity of the outer shell 15 is movably connected to an inner shell 16 , and the right side of the inner shell 16 is fixedly connected to the inner cavity of the fixed shell 7 .
[0032] The above solution is adopted: by setting the outer shell 15 and the inner shell 16, when the control rack 8 moves, the outer shell 15 will be driven to move along the surface of the inner shell 16. The coordinated use of the inner shell 16 and the outer shell 15 has a limiting effect on the moving position of the control rack 8.
[0033] refer to Figure 4 The two handle shells 6 are provided with a limiting groove 17 on one side opposite to the other, and the limiting groove 17 is used in conjunction with the limiting shell 901 . The surface of the limiting shell 901 contacts the inner cavity of the limiting groove 17 .
[0034] The above scheme is adopted: by setting the limit groove 17, when the handle shell 6 moves to the position in contact with the surface of the fixed shell 7, the control rack 8 is released, and the restoring force generated by the spring 903 restoring its shape will drive the limit shell 901 to be stuck into the inner cavity of the limit groove 17. The coordinated use of the limit shell 901 and the limit groove 17 has a limiting effect on the position of the handle shell 6.
[0035] The working principle of this utility model:
[0036] During use, when the biosafety cabinet 1 needs to provide ultraviolet protection for the user, the user first pulls the control rack 8 to the right. When the control rack 8 moves, the outer shell 15 will be driven to move along the surface of the inner shell 16. The rotational force generated by the control rack 8 on the rotating gear disc 10 can drive the rotating gear disc 10 to rotate along the surface of the extrusion rack 11 through the rotating shaft. The extrusion rack 11 subjected to the rotational force will move to the left. When the extrusion rack 11 moves, it will drive the moving hole 12 to move along the surface of the moving block 13. When the extrusion rack 11 moves, it will generate an extrusion force on the extrusion hole 14. The extrusion hole 14 subjected to the extrusion force will drive the limiting shell 901 to move along the surface of the stabilizing rod 902. When the limiting shell 901 moves, the force generated causes the spring 903 to undergo elastic deformation. When the limiting shell 901 is completely When it moves to the inner cavity of the fixed shell 7, the handle shell 6 is pulled to the right. When the handle shell 6 moves, the shading cloth 4 will be extended to the right. When the shading cloth 4 is extended, the winding drum 3 will be driven to rotate along the surface of the winding rod 2. At the same time, the force generated by the rotation of the winding drum 3 will cause the torsion spring 5 to produce elastic deformation. When the handle shell 6 moves to the position in contact with the surface of the fixed shell 7, the shading cloth 4 completely covers the front glass of the biological safety cabinet 1. Then the control rack 8 is released, and the restoring force generated by the spring 903 restoring its shape will drive the limit shell 901 to be stuck into the inner cavity of the limit groove 17. The coordinated use of the limit shell 901 and the limit groove 17 has a limiting effect on the position of the shading cloth 4. The setting of the shading cloth 4 has a shielding effect on the ultraviolet light emitted by the biological safety cabinet 1. At this time, the biological safety cabinet 1 completes ultraviolet protection for the user.
[0037] In summary, the biosafety cabinet with protective function solves the problem that when using the existing biosafety cabinet, the table surface needs to be disinfected with alcohol first, and then the experimental items are placed in the safety cabinet, and then the glass door is closed and the ultraviolet sterilization lamp is turned on. The test can be started after thirty minutes. When using the ultraviolet sterilization lamp, the user needs to leave the vicinity of the body to prevent ultraviolet rays from harming the human body. If the user fails to leave immediately, long-term exposure to ultraviolet rays is likely to cause safety hazards to the user. However, the existing biosafety cabinet does not have a component for protecting the user from ultraviolet rays.
[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A biological safety cabinet with protective function, comprising a biological safety cabinet (1) and a winding rod (2), characterized in that: The rear side of the winding rod (2) is fixedly connected to the front side of the biological safety cabinet (1); the surface of the winding rod (2) is sleeved with a winding drum (3); the surface of the winding drum (3) is sleeved with a shading cloth (4); the top and bottom of the winding drum (3) are fixedly connected with torsion springs (5); the opposite sides of the two torsion springs (5) are fixedly connected to the surface of the winding rod (2); the right side of the shading cloth (4) is fixedly connected with two handle shells (6); the front side of the biological safety cabinet (1) is fixedly connected with a fixed shell (7) used in conjunction with the handle shell (6); the surface of the fixed shell (7) is in contact with the surface of the handle shell (6); the inner cavity of the fixed shell (7) is movably connected with a control rack (8); the right side of the control rack (8) passes through the fixed shell (7) and extends to the outside of the inner cavity of the fixed shell (7); the inner cavity of the fixed shell (7) is provided with a limiting device (9).
2. A biological safety cabinet with protective function as claimed in claim 1, characterized in that: The limiting device (9) comprises two limiting shells (901), and opposite sides of the two limiting shells (901) penetrate the fixed shell (7) and extend to the outside of the inner cavity of the fixed shell (7); the inner cavity of the fixed shell (7) is fixedly connected with two stabilizing rods (902) used in conjunction with the limiting shells (901); the surface of the stabilizing rods (902) contacts the inner cavity of the limiting shell (901); opposite sides of the two stabilizing rods (902) are fixedly connected with springs (903), and opposite sides of the two springs (903) are fixedly connected with the surface of the limiting shell (901).
3. A biological safety cabinet with protective function as claimed in claim 2, characterized in that: The rear side of the inner cavity of the fixed shell (7) is movably connected to two rotating toothed discs (10) used in conjunction with the control rack (8) via a rotating shaft, and the side of the rotating toothed disc (10) away from the limiting shell (901) is meshingly connected to the surface of the control rack (8), and the inner cavity of the fixed shell (7) is movably connected to two extrusion racks (11) used in conjunction with the rotating toothed disc (10), and the surface of the extrusion racks (11) is meshingly connected to the surface of the rotating toothed disc (10).
4. A biological safety cabinet with protective function as claimed in claim 3, characterized in that: A movable hole (12) is provided on the surface of the extrusion rack (11); two movable clamping blocks (13) for use with the movable hole (12) are fixedly connected to the rear side of the inner cavity of the fixed shell (7); and the surfaces of the movable clamping blocks (13) are movably connected to the inner cavity of the movable hole (12).
5. A biological safety cabinet with protective function as claimed in claim 4, characterized in that: An extrusion hole (14) for use with an extrusion rack (11) is provided on the surface of the limiting shell (901), and the surface of the extrusion rack (11) is in contact with the inner cavity of the extrusion hole (14).
6. A biological safety cabinet with protective function as claimed in claim 1, characterized in that: The right side of the control rack (8) is fixedly connected to an outer shell (15), the inner cavity of the outer shell (15) is movably connected to an inner shell (16), and the right side of the inner shell (16) is fixedly connected to the inner cavity of the fixed shell (7).
7. A biological safety cabinet with protective function as claimed in claim 2, characterized in that: The two handle shells (6) are each provided with a limiting groove (17) for use with the limiting shell (901), and the surface of the limiting shell (901) is in contact with the inner cavity of the limiting groove (17).