Biological safety cabinet

Abstract

The utility model provides a biological safety cabinet, which relates to the technical field of medical experiment instruments and comprises a safety cabinet body, a filter mounting rack and a negative pressure circulating mechanism, the filter mounting rack is mounted above the safety cabinet body, and the negative pressure circulating mechanism is mounted above the filter mounting rack. The right surface of the filter mounting rack is provided with a sealing bag fixing clamp through a screw, the filter mounting rack is internally provided with a force storage push plate, the right side of the filter mounting rack is movably connected with a limiting lock plate, the filter mounting rack is internally and tightly provided with a safety cabinet filter, and when the filter is replaced, the safety cabinet filter can be pulled out from the right side of the biological safety cabinet; the filter does not need to be detached by entering the safety cabinet body, so that the filter is more convenient to replace, the replacement efficiency of the filter is improved, and the problems that the filter replacement process of a traditional biological safety cabinet is tedious, a worker needs to enter the cabinet body and detach the filter from the top in the cabinet body, and the risk is high are solved.

Description

Technical Field

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

[0002] In experimental research in the fields of biology, medicine, and pharmacy, biological safety cabinets are important experimental equipment used to protect experimenters from biological contaminants and prevent biological contaminants from interfering with experimental results. When a traditional biological safety cabinet is in working condition, the interior of the cabinet is in a negative pressure state due to the action of the built-in fan. The virus-carrying aerosols generated during the experiment are carried away by the airflow, and the aerosols, bacteria and other harmful components in the airflow are filtered out through the filter and participate in the internal circulation of the biological safety cabinet again, which can filter out tiny particles such as microorganisms, dust, bacteria and viruses in the air, and prevent tiny particles such as microorganisms, dust, bacteria and viruses from flowing out of the laboratory cabinet.

[0003] In traditional biosafety cabinets, filters are key components for ensuring the cleanliness of the operating environment and need to be replaced regularly to ensure their filtering effect. However, the filter replacement process in traditional biosafety cabinets is cumbersome and requires staff to enter the cabinet and remove the filter from the top of the cabinet and transfer the filter to an isolation bag. During this process, staff members touch the filter with their hands, and the filter is exposed to the air when placing it in the isolation bag. Viruses and microorganisms on its surface can easily float in the air and pollute the surrounding environment, posing a high risk. Utility Model Content

[0004] The disclosed embodiments relate to a biosafety cabinet to solve the problem that the filter replacement process of a traditional biosafety cabinet is complicated, requiring workers to enter the cabinet and remove the filter from the top of the cabinet and transfer the filter to an isolation bag. During this process, the workers touch the filter with their hands, and the filter is exposed to the air during the process of placing it in the isolation bag. Viruses and microorganisms on the surface of the filter can easily float in the air and pollute the surrounding environment, posing a high risk problem.

[0005] In a first aspect of the present disclosure, a biological safety cabinet is provided, which specifically includes a safety cabinet body, a filter mounting frame, and a negative pressure circulation mechanism. A filter mounting frame is installed above the safety cabinet body, a negative pressure circulation mechanism is installed above the filter mounting frame, a sealing bag fixing clip is installed on the right surface of the filter mounting frame by screws, a force storage push plate is installed inside the filter mounting frame, a limited position lock plate is movably connected to the right side of the filter mounting frame, and a safety cabinet filter is tightly installed inside the filter mounting frame.

[0006] In at least some embodiments, an air flow channel is longitudinally opened inside the left wall of the filter mounting frame, a limiting lower edge is set at the inner lower edge of the filter mounting frame, and a guide inner edge is fixedly connected to the middle of the inner surface of the filter mounting frame, and the guide inner edge is located above the limiting lower edge.

[0007] In at least some embodiments, a filter installation opening is formed through the right wall of the filter mounting frame, and the filter installation opening is located between the limiting lower edge and the guide inner edge, and a sealing bag sleeve outer edge is fixedly connected to the right side of the opening of the filter installation opening.

[0008] In at least some embodiments, the edge plate of the outer edge of the sealing bag sleeve is an outwardly bent arc structure, a locking rod guide is opened through the bottom of the filter mounting opening, a locking rod magnetic plate is fixedly connected to the right edge of the bottom surface of the filter mounting frame, and the sealing bag fixing clamp is located directly above the middle of the outer edge of the sealing bag sleeve.

[0009] In at least some embodiments, the force storage push plate is slidably connected between the lower edge of the limit and the inner edge of the guide, and two push plate force storage springs are fixedly connected to the left surface of the force storage push plate, and the left end of the push plate force storage spring is fixedly connected to the inner left wall of the force storage push plate.

[0010] In at least some embodiments, the limit lock plate is in an "L"-shaped structure, and an upper edge of the limit lock plate is processed with a lock plate wedge edge with a bevel structure, and the bevel of the lock plate wedge edge faces to the upper right.

[0011] The utility model provides a biological safety cabinet, which has the following beneficial effects:

[0012] The biosafety cabinet in the utility model is provided with a filter mounting frame specially used for mounting the filter, and the filter mounting frame is mounted between the cabinet body of the biosafety cabinet and the negative pressure circulation mechanism, and through the negative pressure circulation mechanism and the air flow channel of the biosafety cabinet, the air inside the cabinet body of the biosafety cabinet is guided to the inside of the negative pressure circulation mechanism, and passes through the cabinet filter from top to bottom into the cabinet body of the biosafety cabinet, so as to achieve air purification, and when the filter needs to be replaced, the cabinet filter can be drawn out from the right side of the biosafety cabinet, without entering the cabinet body of the biosafety cabinet to disassemble the filter, so that the filter replacement work is more convenient and the filter replacement efficiency is improved.

[0013] In addition, the installation structure of the filter has been improved. The filter does not need to be fixed by screws, bolts and other connectors. There is no need to disassemble the cabinet shell or use tools such as screwdrivers and wrenches when replacing the filter. It is easy to operate, the positioning of the safety cabinet filter is reliable, and leakage is not likely to occur.

[0014] In addition, a sealing bag sleeve outer edge is installed outside the filter mounting port on the right side of the filter mounting frame. The sealing bag sleeve outer edge is used to install the sealing bag. When the safe cabinet filter is pulled out, the sealing bag opening can be sleeved and fixed on the sealing bag sleeve outer edge. In this state, the safe cabinet filter is pulled out and the safe cabinet filter can be directly transferred to the sealing bag, thereby avoiding the safe cabinet filter being exposed to the air and causing pollution to the surrounding environment, thereby reducing the risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings of the embodiment will be briefly introduced below.

[0016] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0017] In the attached picture:

[0018] Figure 1 A schematic diagram showing the overall structure of the present application;

[0019] Figure 2 It shows a schematic diagram of the structure of the present application in a decomposed state;

[0020] Figure 3 A schematic diagram showing the structure of the interior of the filter mounting frame of the present application is shown;

[0021] Figure 4 The schematic diagram of the structure of the force storage push plate of the present application is shown;

[0022] Figure 5 A schematic diagram showing the structure of the filter mounting frame of the present application when it is separated from the safety cabinet filter;

[0023] Figure 6 A schematic diagram of the structure of the filter installation port of the present application is shown;

[0024] Figure 7 This application shows Figure 1 A schematic diagram of the partially enlarged structure at point A in the middle;

[0025] Figure 8 This application shows Figure 6 Schematic diagram of the partially enlarged structure at point B in the middle.

[0026] Reference numerals list

[0027] 1. Safety cabinet body; 2. Filter mounting frame; 201. Air flow channel; 202. Limit lower edge; 203. Guide inner edge; 204. Filter mounting port; 205. Sealing bag sleeve outer edge; 206. Lock rod guide port; 207. Lock rod magnetic plate; 3. Negative pressure circulation mechanism; 4. Sealing bag fixing clip; 5. Force storage push plate; 501. Push plate force storage spring; 6. Limit lock plate; 601. Lock plate wedge edge; 7. Safety cabinet filter. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of 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.

[0029] Example 1: Please refer to Figures 1 to 8 :

[0030] The utility model proposes a biological safety cabinet, including a safety cabinet body 1, a filter mounting frame 2, and a negative pressure circulation mechanism 3. The filter mounting frame 2 is mounted on the top of the safety cabinet body 1, the negative pressure circulation mechanism 3 is mounted on the top of the filter mounting frame 2, a sealing bag fixing clip 4 is mounted on the right surface of the filter mounting frame 2 by screws, a force storage push plate 5 is mounted inside the filter mounting frame 2, a limited position locking plate 6 is movably connected to the right side of the filter mounting frame 2, and a safety cabinet filter 7 is tightly mounted inside the filter mounting frame 2; an air circulation mechanism 3 is longitudinally penetrated inside the left wall of the filter mounting frame 2 The filter mounting frame 2 is provided with a limiting lower edge 202 at its inner lower edge, and a guide inner edge 203 is fixedly connected to the middle of the inner surface of the filter mounting frame 2, and the guide inner edge 203 is located above the limiting lower edge 202; the limiting lower edge 202 and the guide inner edge 203 play a guiding role for the safety cabinet filter 7, which facilitates the installation of the safety cabinet filter 7, and the limiting lower edge 202 and the guide inner edge 203 are respectively tightly fitted with the lower surface and the upper surface of the safety cabinet filter 7, so as to avoid leakage from the edge when the air flows through the safety cabinet filter 7.

[0031] In the embodiment of the present disclosure, a filter installation opening 204 is provided on the right wall of the filter mounting frame 2, and the filter installation opening 204 is located between the limiting lower edge 202 and the guide inner edge 203. A sealing bag sleeve outer edge 205 is fixedly connected to the right side of the opening of the filter installation opening 204. The edge plate of the sealing bag sleeve outer edge 205 is an arc-shaped structure bent outward. A locking rod guide opening 206 is provided at the bottom of the filter installation opening 204, and a locking rod magnetic plate 207 is fixedly connected to the right edge of the bottom surface of the filter mounting frame 2. The sealing bag fixing clip 4 is located directly above the middle of the sealing bag sleeve outer edge 205; the sealing bag can be connected through the sealing bag sleeve outer edge 205. When in use, the sealing bag opening is sleeved on the sealing bag sleeve outer edge 205, and it can be fixed by binding with a strap or the sealing bag fixing clip 4 can be used to assist in clamping the bag body, so that the safety cabinet filter 7 can be directly put into the isolation bag for storage after being pulled out.

[0032] In the embodiments of the present disclosure.

[0033] Embodiment 2, on the basis of embodiment 1, the force storage push plate 5 is slidably connected between the limit lower edge 202 and the guide inner edge 203, and the left surface of the force storage push plate 5 is fixedly connected with two push plate force storage springs 501, and the left end of the push plate force storage spring 501 is fixedly connected to the inner left wall of the force storage push plate 5; when the safe cabinet filter 7 is normally installed, the safe cabinet filter 7 pushes the force storage push plate 5 to the left, so that the push plate force storage spring 501 is compressed and stored, and a pushing force is continuously applied to the safe cabinet filter 7. When the right end of the safe cabinet filter 7 loses the limit, the safe cabinet filter 7 is quickly pushed to the right under the elastic force of the push plate force storage spring 501, so that the safe cabinet filter 7 is pushed to the right from the inside of the filter mounting frame 2, which is convenient for disassembly of the safe cabinet filter 7. and replacement, the limit lock plate 6 is in an "L" shape, and the upper edge of the limit lock plate 6 is processed with a lock plate wedge edge 601 with a bevel structure, and the bevel of the lock plate wedge edge 601 faces the upper right; under normal circumstances, when the safe cabinet filter 7 is correctly installed, the bottom plate of the limit lock plate 6 is magnetically connected to the lock rod magnetic plate 207, so that the upper end of the limit lock plate 6 protrudes from the filter installation opening 204, and the safe cabinet filter 7 is limited, so that the safe cabinet filter 7 is fixedly installed inside the filter mounting frame 2. When the safe cabinet filter 7 is removed, the limit lock plate 6 is pushed downward to shrink the limit lock plate 6 to the inside of the lock rod guide opening 206, so that the safe cabinet filter 7 loses its limit and moves to the right under the elastic force of the push plate storage spring 501, thereby realizing the rapid removal of the safe cabinet filter 7.

[0034] The working principle of this embodiment is as follows: first, when replacing the safety cabinet filter 7, the biological safety cabinet is closed and the power is turned off, the opening of the plastic bag used to store the safety cabinet filter 7 is sleeved on the outer edge 205 of the sealing bag sleeve, and the bag body is clamped with auxiliary fixation by binding with a strap or using a sealing bag fixing clamp 4 to assist in clamping the bag body, and the limit lock plate 6 is pulled downward to move the limit lock plate 6 downward and shrink to the inside of the lock rod guide 206, so that the right end of the safety cabinet filter 7 loses the limit of the limit lock plate 6, and the safety cabinet filter 7 is pushed to the right under the elastic force of the push plate storage spring 501. , enter the isolation bag, the operator assists in pulling the safety cabinet filter 7 out of the filter mounting frame 2 and transferring it to the inside of the isolation bag to complete the removal of the safety cabinet filter 7. When installing a new safety cabinet filter 7, push the safety cabinet filter 7 into the filter mounting frame 2 through the filter mounting port 204, insert the safety cabinet filter 7 into the filter mounting frame 2, and limit the right end face of the safety cabinet filter 7 again through the limiting lock plate 6, so that the safety cabinet filter 7 is fixedly installed inside the biological safety cabinet, and the rapid replacement of the filter can be completed.

[0035] In this article, there are a few points to note:

[0036] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0037] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0038] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A biological safety cabinet, comprising: Safety cabinet body (1), filter mounting frame (2), negative pressure circulation mechanism (3) A filter mounting frame (2) is mounted above the safety cabinet body (1), and a negative pressure circulation mechanism (3) is mounted above the filter mounting frame (2), characterized in that a sealing bag fixing clamp (4) is mounted on the right surface of the filter mounting frame (2) by screws, a force storage push plate (5) is mounted inside the filter mounting frame (2), a limit lock plate (6) is movably connected to the right side of the filter mounting frame (2), and a safety cabinet filter (7) is tightly mounted inside the filter mounting frame (2).

2. A biological safety cabinet according to claim 1, characterized in that: An air flow channel (201) is longitudinally penetrated inside the left wall of the filter mounting frame (2), a limiting lower edge (202) is provided on the inner lower edge of the filter mounting frame (2), a guide inner edge (203) is fixedly connected to the middle of the inner surface of the filter mounting frame (2), and the guide inner edge (203) is located above the limiting lower edge (202).

3. A biological safety cabinet according to claim 2, characterized in that: A filter installation opening (204) is provided through the right wall of the filter installation frame (2), the filter installation opening (204) is located between the limit lower edge (202) and the guide inner edge (203), and a sealing bag sleeve outer edge (205) is fixedly connected to the right side of the opening of the filter installation opening (204).

4. A biological safety cabinet according to claim 3, characterized in that: The edge plate of the sealing bag sleeve outer edge (205) is in an outwardly bent arc structure, a locking rod guide opening (206) is provided through the bottom of the filter installation opening (204), a locking rod magnetic plate (207) is fixedly connected to the right edge of the bottom surface of the filter installation frame (2), and the sealing bag fixing clamp (4) is located directly above the middle of the sealing bag sleeve outer edge (205).

5. A biological safety cabinet according to claim 4, characterized in that: The force storage push plate (5) is slidably connected between the limit lower edge (202) and the guide inner edge (203); two push plate force storage springs (501) are fixedly connected to the left surface of the force storage push plate (5); and the left end of the push plate force storage spring (501) is fixedly connected to the inner left wall of the force storage push plate (5).

6. A biological safety cabinet according to claim 1, characterized in that: The position-limiting lock plate (6) is in an "L"-shaped structure, and the upper edge of the position-limiting lock plate (6) is processed with a lock plate wedge edge (601) with an inclined surface structure, and the inclined surface of the lock plate wedge edge (601) faces upward to the right.

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