Multifunctional biological safety type cage changing work station

Abstract

The utility model discloses a multifunctional biological safety type cage changing work station and belongs to the field of safe cage changing. The cage changing workstation comprises a working cavity arranged on the lower side of the biological safety cabinet and an air ventilation and exhaust cavity arranged on the upper side of the biological safety cabinet, the working cavity is communicated with the air ventilation and exhaust cavity through an air inlet efficient filter, a working table top is arranged on the lower side of the working cavity, a primary filter is arranged on the lower side of the working table top, and a secondary filter is arranged on the lower side of the primary filter. A filtering hole communicated with the primary filter is formed in the working table top, the exhaust high-efficiency filter is arranged at an air outlet of the ventilation and exhaust cavity, and an air return channel communicated with the working cavity and the ventilation and exhaust cavity is arranged in the biological safety cabinet. According to the multifunctional biological safety type cage replacing work station, when an operator replaces a cage box in a biological safety cabinet, dust falling from the interior of the cage box is effectively filtered through the primary filter arranged on the lower side of the working area assembly, the efficient filter is protected from being blocked, and the service life of the biological safety cabinet is greatly prolonged.

Description

Technical Field

[0001] The utility model belongs to the field of safe cage changing, in particular to a multifunctional biological safety cage changing workstation. Background Art

[0002] Biosafety laboratories cannot do without experimental animals. Biosafety IVC is a cage system used to raise mice and rats in biosafety experiments. The experimental mice are raised in independent cages. During the breeding process, it is necessary to regularly replace the bedding in the cage or clean the inside of the cage. At this time, a cage changing workstation is needed to change the cage of the biosafety IVC.

[0003] Ordinary cage changing workstations or clean workbenches are only suitable for replacing ordinary IVC cages. Biosafety IVC cages contain high-level bacteria, viruses and other pathogenic microorganisms when they are replaced. Operators of traditional cage changing equipment are at risk of infection when replacing biosafety IVC cages, endangering the life and health of the experimenters.

[0004] In order to protect the life and health of operators, the existing technology is to change cages directly in the biosafety cabinet, but the biosafety cabinet is not specially used for cage changing operations. When changing cages in the biosafety cabinet, the dust in the cage box will quickly clog the high-efficiency filter inside the biosafety cabinet, greatly reducing the service life of the biosafety cabinet. Utility Model Content

[0005] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art, to provide a multifunctional biosafety cage changing workstation, to avoid clogging of the high-efficiency filter when replacing the cage box, and to increase the service life of the biosafety cabinet.

[0006] The technical solution adopted by the utility model to solve its technical problems is: the cage changing workstation comprises a working cavity arranged at the lower side of the biological safety cabinet and a ventilation and exhaust cavity arranged at the upper side of the biological safety cabinet, the working cavity and the ventilation and exhaust cavity are connected through an air inlet high-efficiency filter, a work surface is arranged at the lower side of the working cavity, a primary filter is arranged at the lower side of the work surface, a filter hole connected to the primary filter is arranged on the work surface, the exhaust high-efficiency filter is arranged at the air outlet of the ventilation and exhaust cavity, and a return air channel connecting the working cavity and the ventilation and exhaust cavity is arranged in the biological safety cabinet.

[0007] Preferably, the work surface includes a male plate and a female plate, the female plate is detachably mounted in the working cavity, the male plate is detachably mounted on the female plate, and a plurality of filtering holes are arranged on the male plate and the female plate.

[0008] Preferably, the male board is a shell with an opening facing downward, and the female board is a shell with an opening facing upward.

[0009] Preferably, a static pressure box is further provided in the ventilation and exhaust cavity, and the static pressure box is arranged between the exhaust high efficiency filter and the inlet high efficiency filter.

[0010] Preferably, the biological safety cabinet is provided with a front window lifting system and a front door assembly, the front window lifting system and the front door assembly are arranged on the front side of the biological safety cabinet, the front door assembly is arranged on the upper side of the front window lifting system, an air inlet is arranged on the front side of the working chamber, and the front window lifting system is arranged on the outside of the air inlet.

[0011] Preferably, a filter wire mesh is arranged between the working cavity and the ventilation and exhaust cavity, and the filter wire mesh is arranged in the return air channel.

[0012] Preferably, it further comprises a support frame, on which casters are provided, and the biological safety cabinet is detachably mounted on the support frame for sliding.

[0013] Preferably, the support frame further comprises a chassis, a tray and a lifting mechanism, the lifting mechanism is arranged between the chassis and the tray, and the biosafety cabinet is placed on the tray.

[0014] Preferably, a socket is provided on the tray, and a plug post is provided at the bottom of the biosafety cabinet, and the plug post is installed in the socket.

[0015] Compared with the prior art, the technical solution has the following beneficial effects: the utility model adopts a multifunctional biosafety cage changing workstation. When the operator replaces the cage box in the biosafety cabinet, the primary filter arranged on the lower side of the working area component can effectively filter the dust falling from the cage box, thereby protecting the high-efficiency filter from being blocked and greatly improving the service life of the biosafety cabinet.

[0016] In order to meet the different needs of operators to change cages and conduct experiments, the workspace components are equipped with male and female boards. Through the different installation methods of the male and female boards, the switching of the biosafety cabinet mode can be realized, that is, the switching between the cage changing workstation mode and the biosafety cabinet experiment mode, which is simple to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a structural schematic diagram of a multifunctional biosafety cage changing workstation.

[0018] Figure 2 A schematic diagram of the structure of the support frame.

[0019] Figure 3 This is a schematic diagram of the structure of a biological safety cabinet.

[0020] Figure 4 for Figure 3 Middle AA section view.

[0021] Figure 5 for Figure 3Middle BB section view.

[0022] Figure 6 It is a structural diagram of the work surface.

[0023] Figure 7 A top view of the work surface.

[0024] Figure 8 for Figure 7 Middle CC section view.

[0025] Among them: 1, support frame 2, main frame 201, plug column 3, primary filter 4, male plate 401, filter hole 5, working chamber 6, chassis 7, tray 701, plug hole 8, caster 9, lifting column 10, motherboard 11, static pressure box 12, front window lifting system 13, front door assembly 14, air inlet high efficiency filter 15, exhaust high efficiency filter 16, filter wire mesh 17, diffuser. DETAILED DESCRIPTION

[0026] Figures 1 to 8 It is the best embodiment of the utility model, and the following Figures 1 to 8 The utility model is further described.

[0027] Reference Figure 1~2 The multifunctional biosafety cage changing workstation comprises a support frame 1, a biosafety cabinet, a workspace component and a primary filter 3. The biosafety cabinet is placed on the support frame 1, the workspace component is arranged in the biosafety cabinet, the primary filter 3 is arranged in the biosafety cabinet, and the primary filter 3 is arranged on the lower side of the workspace component.

[0028] The support frame 1 includes a chassis 6, a tray 7, casters 8 and a lifting mechanism. The H-shaped chassis 6 is welded from a square steel frame. The H-shaped chassis 6 can reduce weight while ensuring stability, and at the same time reserve space for the operator to stand or sit for operation. The lifting mechanism includes a lifting column 9, which is arranged between the chassis 6 and the tray 7. The lifting column 9 drives the tray 7 to rise and fall, and can complete the adjustment of the height of the equipment to meet different usage requirements, such as the height required by operators sitting, standing or of different heights. Four casters 8 are arranged on the lower side of the chassis 6, and the entire equipment can be moved. The biosafety cabinet is placed on the tray 7, and a socket 701 is arranged on the tray 7. A plug column 201 is arranged at the bottom of the biosafety cabinet, and the plug column 201 is installed in the socket 701, which facilitates the rapid disassembly and assembly of the biosafety cabinet and the support frame 1.

[0029] Reference Figures 3-5The biological safety cabinet includes a main frame 2, a filter system, a static pressure box 11, a front window lifting system 12 and a front door assembly 13. The main frame 2 is provided with two layers, the filter system and the static pressure box 11 are provided on the upper layer. The front window lifting system 12 and the front door assembly 13 are provided on the front side of the main frame 2, and the front door assembly 13 is provided on the upper side of the front window lifting system 12.

[0030] The front window lifting system 12 is composed of tempered glass, steel wire rope, and counterweight plate. After the tempered glass is opened, it can slide up and down to form different heights. The front window lifting system 12 is an air inlet of the work area component.

[0031] A high-definition touch screen and an electrical box are installed in the front door assembly 13, which can be flipped upwards and opened for maintenance.

[0032] The filtration system includes an air inlet high efficiency filter 14 and an air exhaust high efficiency filter 15 . The air inlet high efficiency filter 14 is arranged at the lower side of the static pressure box 11 , and the air exhaust high efficiency filter 15 is arranged at the upper side of the static pressure box 11 .

[0033] The static pressure box 11 is a closed box with holes opened on the side and a fan installed therein. The fan takes air from the outside of the static pressure box 11 and blows it into the static pressure box 11 to form an air duct system of the equipment.

[0034] The air inlet high efficiency filter 14 is arranged at the lower side of the static pressure box 11 to ensure that the airflow entering the working area is clean airflow, and the return air high efficiency filter 15 is arranged at the lower side of the exhaust port to make the airflow discharged into the room clean and pollution-free.

[0035] The work area assembly is arranged at the lower layer of the main frame 2. The work area assembly includes a work surface and a work chamber 5. The work chamber 5 is made of a U-shaped stainless steel plate. The U-shaped stainless steel plate is arranged horizontally. The work chamber 5 is fitted with the cabinet walls on both sides of the biological safety cabinet so that the upper, lower and front sides of the work chamber 5 are opened. The air inlet high efficiency filter 14 is arranged on the upper side of the work chamber 5 to cover the upper side opening. The lower side of the air inlet high efficiency filter 14 is provided with a diffuser 17. The diffuser 17 is made of uniform small holes on an aluminum plate, and the air flow can be more uniform and stable when passing through. The gas in the static pressure box 11 flows through the air inlet high efficiency filter 14 and then enters the work chamber 5 through the diffuser 17. The front window lifting system 12 is arranged on the front side of the work chamber 5 to cover the opening on the front side. The tempered glass slides up and down to facilitate the operator to perform different functional operations. When the front window lifting system 12 is opened, the gas also enters the work chamber 5 from the front window lifting system 12. The primary filter 3 is arranged on the lower side of the work surface, covering the lower opening. A certain space is left between the primary filter 3 and the lower cabinet wall of the biological safety cabinet as a return air channel. A certain space is also left between the rear side of the working chamber 5 and the biological safety cabinet as a return air channel. A filter hole 401 connected to the primary filter 3 is arranged between the work surface and the working chamber 5. The gas in the working chamber 5 flows through the primary filter 3 and then flows upward through the return air channel, and then flows out from the exhaust port after passing through the exhaust high-efficiency filter 15.

[0036] The work surface is provided with a filter hole 401, and the work surface can intercept part of the fallen bedding when changing cages, and the gas containing dust and bedding is filtered through the primary filter 3. The filter wire mesh 16 is arranged in the return air channel on the side of the biological safety cabinet, fixed on the work surface, and arranged between the primary filter 3 and the air inlet high efficiency filter 14. The filter wire mesh 16 is woven from φ3mm steel wire and serves as the second barrier of the air duct system, thereby preventing dirty gas from entering the air duct, protecting the fan, and increasing the service life of the exhaust high efficiency filter 15.

[0037] The work area is also equipped with ultraviolet lamps, lighting lamps, wind speed sensors and sockets. An external disinfection interface is reserved on the side, which can be connected to hydrogen peroxide and other disinfection equipment to complete the disinfection of the entire equipment.

[0038] Reference Figures 6-8 The work surface includes a male plate 4 and a female plate 10. The male plate 4 is a concave plate, and the female plate 10 is a concave plate with multiple grooves. In this embodiment, the female plate 10 is provided with four grooves, and the male plate 4 is embedded in the grooves of the female plate 10, that is, the work surface is divided into four working areas. The female plate 10 is detachably mounted on the working cavity 5, and the male plate 4 is detachably mounted on the female plate 10. Multiple filtering holes 401 are provided on the lower sides of the male plate 4 and the female plate 10.

[0039] There are three placement modes for the work surface: the first is that the motherboard 10 is at the bottom, the male board 4 is embedded in the groove of the motherboard 10, and the work surface is flat. This mode is suitable for the biological safety cabinet mode to do some operation experiments.

[0040] The second is that the motherboard 10 is not moved, the male board 4 is removed, and the entire work surface becomes a plane with grooves. This working mode can be used when changing cages to prevent the padding from spilling. The first and second modes can be switched quickly, which is suitable for scenes where the two working modes are frequently switched.

[0041] The third mode is to remove the male board 4 and install the mother board 10 by 180 degrees, so that the entire table is a flat surface. This scenario is suitable for biological experiments that do not frequently switch working modes and are only used for plane experiments and have high requirements for table flatness.

[0042] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A multifunctional biosafety cage changing workstation, characterized by: The invention comprises a working chamber (5) arranged at the lower side of the biological safety cabinet and a ventilation and exhaust chamber arranged at the upper side of the biological safety cabinet, the working chamber (5) and the ventilation and exhaust chamber are connected via an air inlet high-efficiency filter (14), a work surface is arranged at the lower side of the working chamber (5), a primary filter (3) is arranged at the lower side of the work surface, a filter hole (401) connected to the primary filter (3) is arranged on the work surface, the exhaust high-efficiency filter (15) is arranged at the air outlet of the ventilation and exhaust chamber, and a return air channel connecting the working chamber (5) and the ventilation and exhaust chamber is arranged in the biological safety cabinet.

2. A multifunctional biosafety cage changing workstation according to claim 1, characterized in that: The work surface comprises a male plate (4) and a female plate (10); the female plate (10) is detachably mounted in the working cavity (5); the male plate (4) is detachably mounted on the female plate (10); and a plurality of filter holes (401) are provided on the male plate (4) and the female plate (10).

3. A multifunctional biosafety cage changing workstation according to claim 2, characterized in that: The male plate (4) is a shell with an opening facing downward, and the female plate (10) is a shell with an opening facing upward.

4. A multifunctional biosafety cage changing workstation according to claim 1, characterized in that: A static pressure box (11) is also provided in the ventilation and exhaust cavity, and the static pressure box (11) is arranged between the exhaust high-efficiency filter (15) and the inlet high-efficiency filter (14).

5. A multifunctional biosafety cage changing workstation according to claim 1, characterized in that: The biosafety cabinet is provided with a front window lifting system (12) and a front door assembly (13); the front window lifting system (12) and the front door assembly (13) are arranged on the front side of the biosafety cabinet; the front door assembly (13) is arranged on the upper side of the front window lifting system (12); an air inlet is arranged on the front side of the working chamber (5); and the front window lifting system (12) is arranged on the outer side of the air inlet.

6. A multifunctional biosafety cage changing workstation according to claim 1, characterized in that: A filter steel mesh (16) is arranged between the working chamber (5) and the ventilation and exhaust chamber, and the filter steel mesh (16) is arranged in the return air channel.

7. A multifunctional biosafety cage changing workstation according to claim 1, characterized in that: It also includes a support frame (1), on which casters (8) are provided, and the biological safety cabinet is detachably mounted on the support frame (1) for sliding.

8. A multifunctional biosafety cage changing workstation according to claim 7, characterized in that: The support frame (1) further comprises a chassis (6), a tray (7) and a lifting mechanism, wherein the lifting mechanism is arranged between the chassis (6) and the tray (7), and the biosafety cabinet is placed on the tray (7).

9. A multifunctional biosafety cage changing workstation according to claim 8, characterized in that: The tray (7) is provided with a socket (701), the bottom of the biosafety cabinet is provided with a plug post (201), and the plug post (201) is installed in the socket (701).

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