Purification assembly for biosafety cabinet

Abstract

The utility model belongs to the technical field of biosafety cabinets, and particularly relates to a purification assembly for a biosafety cabinet, which comprises a shell, a first filter, a second filter and an elastic limiter, the first filter is installed at the first opening and is limited to be separated from the first opening upwards through the connection of the elastic limiter and the shell, and the second filter is installed at the second opening and is limited to be separated from the second opening downwards through the connection of the elastic limiter and the shell. The filter and the shell are stably connected, so that the integrity of the whole purification assembly is improved, the filter cannot fall off due to support loss in the disassembly and assembly process of the purification assembly and the biosafety cabinet, the filter is prevented from falling on the ground and being polluted, and meanwhile, the filter is prevented from falling on the ground and popping up a large amount of dust to pollute the working environment.

Description

Technical Field

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

[0002] Biological safety cabinet (BSC), also known as biological or microbiological safety cabinet, is a completely enclosed ventilated laboratory workspace designed to protect personnel, laboratory environment, external natural environment, and experimental samples from infectious microbial experiments during operation or inspection, and to avoid exposure to aerosols and splashing materials that may be generated during the above-mentioned operations. It is used to safely handle contaminated (or potentially contaminated) pathogens and requires materials with a determined biosafety level. There are several different types of biosafety cabinets (i.e. Class I, Class II or Class III), which are distinguished from each other by the degree of biological protection required. The main purpose of a biosafety cabinet is to serve as the primary means of protecting laboratory workers and the surrounding environment from pathogens.

[0003] In the prior art, Chinese utility model patent application number CN202221945397.8 discloses a purification component for a biosafety cabinet, in which the first filter, housing, and second filter of the purification component are pressed and installed in sequence from bottom to top. Therefore, the purification component is not highly integrated. During the disassembly and assembly process with the biosafety cabinet, the filter is prone to lose support and fall. If an unused filter falls to the ground, it is easily contaminated. If a used filter falls to the ground, a large amount of dust or bacteria, viruses, and other substances will be ejected due to the impact, thereby polluting the working environment. Therefore, in response to the above problems, we propose a purification component for a biosafety cabinet. Utility Model Content

[0004] In order to overcome the problems existing in the related art, the utility model discloses a purification component for a biosafety cabinet.

[0005] In order to achieve the above purpose, a technical solution adopted by the utility model is:

[0006] A purification component for a biological safety cabinet includes a shell, a first filter, a second filter and an elastic limiter. The upper and lower ends of the shell are respectively provided with a first opening and a second opening arranged opposite to each other. The first filter is installed at the first opening and is restricted from moving upward out of the first opening by the connection with the shell by the elastic limiter. The second filter is installed at the second opening and is restricted from moving downward out of the second opening by the connection with the shell by the elastic limiter. The shell, the first filter and the second filter jointly enclose a purification space.

[0007] Furthermore, a first limiting member for limiting downward movement of the first filter is provided on the inner side of the shell corresponding to the first opening, and a second limiting member for limiting upward movement of the second filter is provided on the inner side of the shell corresponding to the second opening.

[0008] Furthermore, a sealing gasket is provided between the first limiting member and the first filter, and between the second limiting member and the second filter.

[0009] Furthermore, the elastic limiter includes an elastic portion and a locking portion, and the locking portions are provided on opposite sides of the elastic portion;

[0010] The housing is provided with locking grooves at locations corresponding to the first opening and the second opening for inserting the locking portion of the elastic limiter.

[0011] Furthermore, the elastic limiter has two elastic parts, the two elastic parts are spaced apart from each other, and locking parts are provided on both the front and rear sides of the two elastic parts;

[0012] The elastic limiter also includes a handle portion. There are two handle portions. The two handle portions are located between the two elastic portions and are spaced apart from each other. The handle portion is connected to the two locking portions on the same side.

[0013] Furthermore, the handle portion includes a kneading section and a connecting section, the left and right ends of the kneading section are connected to connecting sections, and the ends of the two connecting sections away from the kneading section are respectively connected to the two locking portions.

[0014] Furthermore, the kneading sections of the two handles are close to each other so that the user can knead the two kneading sections with one hand.

[0015] Furthermore, the elastic portion is a bending structure that is continuously bent in a Z shape.

[0016] Furthermore, the elastic limiter is an integrated structure formed by bending a metal strip, and the two ends of the bent metal strip are aligned and fixed by welding.

[0017] Furthermore, an assembly seat for assembly with a biosafety cabinet is provided on the side of the shell, and an installation slot for installing a fan is also provided on the side of the shell.

[0018] The utility model discloses a purification component for a biosafety cabinet. The purification component fixes a filter on a shell by an elastic limiter, so that the filter and the shell form a stable connection, thereby improving the integrity of the entire purification component. During the disassembly and assembly of the purification component and the biosafety cabinet, the filter will not lose support and fall, thereby preventing the filter from falling to the ground and being contaminated, and at the same time preventing the filter from falling to the ground and ejecting a large amount of dust to pollute the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 A schematic diagram of the structure of an embodiment of the present invention Figure 1 ;

[0021] Figure 2 A schematic diagram of the structure of an embodiment of the present invention Figure 2 ;

[0022] Figure 3 This is a schematic cross-sectional view of an embodiment of the present invention;

[0023] Figure 4 for Figure 3 A schematic diagram of the structure at center A;

[0024] Figure 5 for Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0025] Figure 6 This is a structural diagram of a housing in one embodiment of the present utility model;

[0026] Figure 7 Schematic diagram of the structure of the elastic limiter in one embodiment of the present invention.

[0027] The meanings of the reference numerals in the accompanying drawings are:

[0028] Shell 1, first opening 11, second opening 12, first limiter 13, second limiter 14, locking slot 15, mounting slot 16, first filter 2, second filter 3, elastic limiter 4, elastic portion 41, locking portion 42, handle portion 43, kneading section 431, connecting section 432, sealing gasket 5, assembly seat 6. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings.

[0030] Reference Figure 1-Figure 7As shown, the purification assembly for a biosafety cabinet in this embodiment includes a housing 1, a first filter 2, a second filter 3, and an elastic stopper 4. The housing 1 has a first opening 11 and a second opening 12 disposed opposite each other at its upper and lower ends. In this embodiment, the housing 1 has a mounting seat 6 for assembly with the biosafety cabinet. Furthermore, the housing 1 has a mounting slot 16 for mounting a fan.

[0031] In this embodiment, the first filter 2 is installed at the first opening 11 and is restricted from moving upward out of the first opening 11 by the connection between the first filter 2 and the shell 1 through the elastic limiter 4. The second filter 3 is installed at the second opening 12 and is restricted from moving downward out of the second opening 12 by the connection between the first filter 2 and the shell 1 through the elastic limiter 4. The shell 1, the first filter 2 and the second filter 3 together enclose a purification space.

[0032] Furthermore, a first stopper 13 for limiting the downward movement of the first filter 2 is provided on the inner side of the shell 1 at a position corresponding to the first opening 11, and a second stopper 14 for limiting the upward movement of the second filter 3 is provided on the inner side of the shell 1 at a position corresponding to the second opening 12. In this way, the first stopper 13 cooperates with the elastic stopper 4 on the upper side to fix the first filter 2 at the first opening 11, and correspondingly, the second stopper 14 cooperates with the elastic stopper 4 on the lower side to fix the second filter 3 at the second opening 12. In this way, the two filters can maintain a stable connection with the shell 1, so that the three form a whole. In this way, during the disassembly and assembly of the purification component and the biosafety cabinet, the filters will not lose support and fall, thereby preventing the filters from falling to the ground and being contaminated, and at the same time preventing the filters from falling to the ground and ejecting a large amount of dust to pollute the working environment.

[0033] In this embodiment, a sealing gasket 5 is provided between the first stopper 13 and the first filter 2, and between the second stopper 14 and the second filter 3. The upper sealing gasket 5 seals the gap between the housing 1 and the edge of the first filter 2, and correspondingly, the lower sealing gasket 5 seals the gap between the housing 1 and the edge of the second filter 3. This arrangement effectively prevents air within the housing 1 from flowing out of the gaps between the first filter 2 and the housing 1 and / or between the second filter 3 and the housing 1.

[0034] In this embodiment, the elastic stopper 4 includes an elastic portion 41 and a locking portion 42. The locking portions 42 are provided on opposite sides of the elastic portion 41. In addition, the housing 1 is provided with locking slots 15 for inserting the locking portions 42 of the elastic stopper 4 at locations corresponding to the first opening 11 and the second opening 12.

[0035] The elastic portion 41 can push the locking portions 42 on the front and rear sides outward under the action of its own elastic force. When the locking portions 42 on both sides are respectively inserted into the corresponding locking grooves 15 on both sides of the shell 1, the elastic limiter 4 remains fixed to the shell 1 under the elastic force of the elastic portion 41. When it is fixed to the upper side of the first filter 2, it can limit the upward movement of the first filter 2 relative to the shell 1. Correspondingly, when it is fixed to the lower side of the second filter 3, it can limit the downward movement of the second filter 3.

[0036] When the elastic limiter 4 needs to be removed from the housing 1 , the locking portions 42 on both sides are pushed inward simultaneously to overcome the elastic force of the elastic portion 41 until the locking portions 42 exit the corresponding locking slots 15 .

[0037] In this embodiment, the elastic stopper 4 has two elastic portions 41 spaced apart from each other, and locking portions 42 are provided on both the front and rear sides of the two elastic portions 41. The elastic stopper 4 also includes two handle portions 43, which are located between the two elastic portions 41 and spaced apart from each other. The handle portions 43 are connected to the two locking portions 42 on the same side.

[0038] Increasing the number of elastic portions 41 can enhance the connection strength between the elastic stopper 4 and the housing 1, providing a more stable retaining effect on the corresponding filter. Furthermore, the provision of the handle portion 43 facilitates the user's simultaneous control of the front and rear locking portions 42 toward the center. Specifically, the handle portion 43 includes a kneading section 431 and a connecting section 432. The kneading section 431 is connected to a connecting section 432 at each end. The two connecting sections 432, located away from the kneading section 431, are connected to the two locking portions 42, respectively.

[0039] In this embodiment, the kneading sections 431 of the two handles 43 are close to each other, so that the user can knead the two kneading sections 431 with one hand, thereby improving the convenience of use of the elastic limiter 4.

[0040] In this embodiment, the elastic portion 41 is a continuously Z-shaped bending structure, which can provide a relatively stable elastic force for a long time.

[0041] In this embodiment, the elastic limiter 4 is an integrated structure formed by bending a metal strip, and the two ends of the bent metal strip are aligned and fixed by welding. This structure is simple and reliable, easy to produce, and low in cost.

[0042] In summary, the utility model discloses a purification component for a biosafety cabinet, which fixes the filter on the shell through an elastic limiter, so that the filter and the shell form a stable connection, thereby improving the integrity of the entire purification component. During the disassembly and assembly of the purification component and the biosafety cabinet, the filter will not lose support and fall, thereby preventing the filter from falling to the ground and being contaminated, and at the same time preventing the filter from falling to the ground and ejecting a large amount of dust to pollute the working environment.

[0043] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by persons skilled in the art without departing from the spirit and technical principles disclosed herein shall be covered by the claims of the present invention.

Claims

1. A purification assembly for a biological safety cabinet, characterized by: It includes a shell, a first filter, a second filter and an elastic limiter. The upper and lower ends of the shell are respectively provided with a first opening and a second opening arranged opposite to each other. The first filter is installed at the first opening and is restricted from moving upward out of the first opening by the connection with the shell by the elastic limiter. The second filter is installed at the second opening and is restricted from moving downward out of the second opening by the connection with the shell by the elastic limiter. The shell, the first filter and the second filter jointly enclose a purification space.

2. A purification assembly for a biological safety cabinet according to claim 1, characterized in that: A first limiting member for limiting downward movement of the first filter is provided at the inner side of the shell corresponding to the first opening, and a second limiting member for limiting upward movement of the second filter is provided at the inner side of the shell corresponding to the second opening.

3. A purification assembly for a biological safety cabinet according to claim 2, characterized in that: A sealing gasket is provided between the first limiting member and the first filter, and between the second limiting member and the second filter.

4. The purification assembly for a biological safety cabinet according to claim 1, characterized in that: The elastic limiter includes an elastic portion and a locking portion, and the locking portion is provided on two opposite sides of the elastic portion; The housing is provided with locking grooves at locations corresponding to the first opening and the second opening for inserting the locking portion of the elastic limiter.

5. The purification assembly for a biological safety cabinet according to claim 4, characterized in that: The elastic limiter has two elastic parts, which are spaced apart on the left and right sides, and locking parts are provided on the front and rear sides of the two elastic parts; The elastic limiter also includes a handle portion. There are two handle portions. The two handle portions are located between the two elastic portions and are spaced apart from each other. The handle portion is connected to the two locking portions on the same side.

6. The purification assembly for a biological safety cabinet according to claim 5, characterized in that: The handle portion includes a kneading section and a connecting section. The left and right ends of the kneading section are both connected to the connecting section. The ends of the two connecting sections away from the kneading section are respectively connected to the two locking portions.

7. The purification assembly for a biological safety cabinet according to claim 6, characterized in that: The kneading sections of the two handles are close to each other so that a user can knead the two kneading sections with one hand.

8. The purification assembly for a biological safety cabinet according to claim 4, characterized in that: The elastic portion is a bending structure that is continuously bent in a Z shape.

9. The purification assembly for a biological safety cabinet according to claim 4, characterized in that: The elastic limiter is an integrated structure formed by bending a metal strip, and the two ends of the bent metal strip are aligned and fixed by welding.

10. The purification assembly for a biological safety cabinet according to claim 1, characterized in that: An assembly seat for assembling with a biosafety cabinet is provided on the side of the shell, and an installation slot for installing a fan is also provided on the side of the shell.

Images