Bio-safety cabinet with double-layer filtering function

Abstract

The utility model discloses a biosafety cabinet capable of double-layer filtration, which comprises a cabinet body, an operation chamber is arranged in the cabinet body, and a bottom air duct is arranged at the bottom end of the operation chamber. By arranging the reducing pipe, the exhaust pipe, the exhaust outlet, the filter box, the exhaust filter, the air disc and the high alcohol, double-layer filtration of exhausted air is achieved, air can be exhausted into the reducing pipe through operation of the exhaust fan, airflow can be concentrated and pressurized through arrangement of the reducing pipe, meanwhile, the air is conveyed into the filter box, and the filtering effect is improved. The air disc divides air into a plurality of small bubbles and increases the contact area with the high-alcohol, the high-alcohol can kill bacteria in the air and adsorb particle dust and various suspended solids, then the air is conveyed into the air exhaust opening, secondary filtering is conducted when the air passes through the air exhaust filter, and the exhausted air is purified; therefore, the exhausted air does not carry germs, the environment is prevented from being polluted, and the use safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to biological safety cabinet technical field, concretely is a biological safety cabinet of double -deck filtration. BACKGROUND

[0002] The biological safety cabinet is the box type air purification negative pressure safety device that some containing dangerous or unknown biological microparticle aerosol dispersion in the process of preventing experiment operation handling. It is widely used in microbiology, biomedical, genetic engineering, biological product and other fields of scientific research, teaching, clinical examination and production, and the working principle of the biological safety cabinet is mainly that the air in the cabinet is sucked outward, so that the cabinet is kept in a negative pressure state, the staff is protected through the vertical airflow, the outside air is filtered into the safety cabinet through the high-efficiency air filter, so as to avoid the pollution of the sample, and the air in the cabinet is filtered through the HEPA filter before being discharged into the atmosphere, so as to protect the environment. In actual use, the exhaust structure of the biological safety cabinet is mainly filtered by the filter for single filtration, and the smaller bacteria in the air can easily pass through the filter and be discharged to the outside, polluting the environment. Therefore, the present application provides a biological safety cabinet with double-layer filtration. SUMMARY

[0003] The utility model discloses a biological safety cabinet with double-layer filtration, which solves the problems in the background art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a biological safety cabinet with double-layer filtration, comprising a cabinet body, an operation chamber is arranged inside the cabinet body, a bottom air duct is arranged at the bottom end of the operation chamber, a top air duct is arranged at the top end of the operation chamber, a supply air filter is installed at the bottom end inside the top air duct, a supply air fan is installed on one side inside the top air duct, a supply air outlet is arranged on one side of the supply air fan, a reducer is installed at the top end of the top air duct, an exhaust air fan is installed at the bottom end of the reducer, a filter box is installed on one side of the cabinet body, an exhaust air outlet is arranged at the top end of the filter box, an exhaust air duct is installed between the filter box and the reducer, the exhaust air duct extends into the inside of the filter box, an air disc is arranged inside the filter box, high alcohol is arranged inside the filter box, and an exhaust air filter is installed inside the exhaust air outlet.

[0005] Preferably, the air disc is arranged at the bottom end inside the filter box, and the air disc is fixedly connected with one end of the exhaust air duct.

[0006] Preferably, a glass door is installed at the front end of the operation chamber, a liquid storage tank is arranged on the outside of the top end of the glass door, and a liquid inlet is arranged on the outside of the liquid storage tank.

[0007] Preferably, a cleaning cloth is embedded in the inner side of the liquid storage tank, and the cleaning cloth is in the shape of an elongated strip. The length of the cleaning cloth is greater than the length of the glass door, and the cleaning cloth is in contact with the outer wall of the glass door.

[0008] Preferably, a cotton fiber stick is provided on one side of the cleaning cloth, and the cotton fiber stick extends to the interior of the liquid storage tank.

[0009] Preferably, the cotton fiber sticks are provided in several groups, and the cotton fiber sticks are arranged at equal intervals on the liquid storage tank.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] (1) By providing a reducer, an exhaust pipe, an exhaust port, a filter box, an exhaust filter, an air disc and high-alcohol, double-layer filtration of the exhaust air is achieved. The operation of the exhaust fan will discharge the air into the interior of the reducer. The setting of the reducer will concentrate the airflow and increase the pressure, and at the same time, the air will be transported to the interior of the filter box. The air disc will divide the air into several small bubbles, increasing the contact area with the high-alcohol. The high-alcohol will disinfect bacteria in the air and absorb particulate dust and various suspended matter. Then, the air will be transported to the interior of the exhaust port. When passing through the exhaust filter, it will undergo secondary filtration and purify the exhaust air to ensure that the exhausted air does not carry pathogens and prevent environmental pollution, thereby improving the safety of use.

[0012] (2) By providing a liquid storage tank, a cleaning cloth, a cotton fiber stick and a liquid filling port, automatic cleaning of the liquid storage tank is achieved. The interior of the liquid storage tank can store alcohol or disinfectant, and the distribution of the cotton fiber sticks can evenly guide the alcohol or disinfectant to the interior of the cleaning cloth. With the contact between the cleaning cloth and the glass door and the up and down movement of the glass door, the cleaning cloth can wipe the outer wall of the glass door to prevent germs from adhering to the outer wall of the glass door, thereby quickly cleaning the glass door. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a front view structural diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the front cross-sectional structure of the present utility model;

[0016] Figure 3The side view structure schematic diagram of the utility model is shown in the figure.

[0017] Figure 4 The filter box front view partial section structure schematic diagram of the utility model is shown in the figure.

[0018] Figure 5 The liquid storage tank side view partial section structure schematic diagram of the utility model is shown in the figure.

[0019] The figure mark explanation is shown in the figure.

[0020] 1, cabinet body;2, operation chamber;3, glass door;4, liquid storage tank;5, top air duct;6, reducing pipe;7, exhaust pipe;8, exhaust port;9, filter box;10, bottom air duct;11, air supply filter;12, air supply fan;13, air supply port;14, exhaust filter;15, air disc;16, high alcohol;17, exhaust fan;18, cleaning cloth;19, cotton fiber stick;20, liquid adding port. Specific implementation

[0021] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme in the utility model embodiment will be described clearly and completely below in combination with the drawings in the utility model embodiment, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0022] In the description of the utility model, it is necessary to explain that, unless there is explicit provision and limitation, the term ''installation'', ''connection'' should be understood broadly, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be the communication inside two elements. For the person skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific situation.

[0023] Please refer to Figures 1-5The utility model provides a kind of embodiment of double-layer filtering biosafety cabinet, including cabinet 1, the inside of cabinet 1 is provided with operating chamber 2, and the bottom end of operating chamber 2 is provided with bottom air duct 10, the top end of operating chamber 2 is provided with top air duct 5, and the bottom end inside top air duct 5 is installed with air supply filter 11, one side inside top air duct 5 is installed with air supply fan 12, and one side of air supply fan 12 is provided with air supply port 13, the top end of top air duct 5 is installed with reducing pipe 6, and the bottom end of reducing pipe 6 is installed with exhaust fan 17, one side of cabinet 1 is installed with filter box 9, and the top end of filter box 9 is provided with exhaust port 8, exhaust pipe 7 is installed between filter box 9 and reducing pipe 6, and exhaust pipe 7 extends to the inside of filter box 9, the inside of filter box 9 is provided with air disc 15, the inside of filter box 9 is provided with high alcohol 16, exhaust filter 14 is installed in the inside of exhaust port 8, air disc 15 is arranged at the position of the inside bottom end of filter box 9, and fixed connection is formed between air disc 15 and one end of exhaust pipe 7;

[0024] Specifically, as shown in the figure, in use, air is discharged to the inside of reducing pipe 6 by the operation of exhaust fan 17, and then is transported to the inside of filter box 9 through exhaust pipe 7, air disc 15 divides the air into a plurality of small bubbles, increasing the contact area with high alcohol 16, and high alcohol 16 kills bacteria in the air, then the air is transported to the inside of exhaust port 8, and is filtered again when passing through exhaust filter 14, to purify the air discharged, so as to ensure that the air discharged does not carry bacteria and prevent pollution of the environment.

[0025] The front end of operating chamber 2 is installed with glass door 3, and the outside of the top end of glass door 3 is provided with liquid storage groove 4, the outside of liquid storage groove 4 is provided with liquid inlet 20, the inside of liquid storage groove 4 is inlaid with cleaning cloth 18, and cleaning cloth 18 is in strip shape, the length of cleaning cloth 18 is greater than the length of glass door 3, and cleaning cloth 18 is in contact with the outer wall of glass door 3, one side of cleaning cloth 18 is provided with cotton fiber rod 19, and cotton fiber rod 19 extends to the inside of liquid storage groove 4, a plurality of groups of cotton fiber rods 19 are provided, and cotton fiber rods 19 are arranged and distributed on liquid storage groove 4 at equal intervals.

[0026] Specifically, as shown in the figure, in use, alcohol or disinfectant can be uniformly guided into the inside of cleaning cloth 18 by the distribution of cotton fiber rod 19, and cleaning cloth 18 can wipe the outer wall of glass door 3 by cooperating with the contact between cleaning cloth 18 and glass door 3 and the up-down movement of glass door 3.

[0027] Working principle: in use, first, inject high alcohol 16 into the inside of filter box 9, inject alcohol or disinfectant into the inside of liquid storage tank 4, and hold the handle outside the glass door 3, push the glass door 3 upwards, the outer wall of the glass door 3 will be in friction contact with the cleaning cloth 18 during upward movement, the distribution of the cotton fiber rod 19 can uniformly guide the alcohol or disinfectant into the inside of the cleaning cloth 18, and the glass door 3 is disinfected and killed, then the biological safety cabinet is connected to the power supply, the air supply fan 12 and the exhaust fan 17 are started, and the operation is carried out, the air supply and exhaust operation is carried out in the operation chamber 2, the exhaust fan 17 will exhaust the air into the inside of the reducing pipe 6, the reducing pipe 6 will concentrate the airflow and increase the pressure, and at the same time, the air is delivered to the inside of the filter box 9, the air disc 15 divides the air into a plurality of small bubbles, increases the contact area with the high alcohol 16, the high alcohol 16 kills the bacteria in the air, then the air is delivered to the inside of the exhaust port 8, and is filtered again when passing through the exhaust filter 14, the outside exhaust air is purified to ensure that the exhaust air does not carry bacteria and prevent environmental pollution, and finally the use of the biological safety cabinet is completed.

[0028] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims.

Claims

1. A double-filterable biosafety cabinet comprising a cabinet body (1), characterized in that: The inside of the cabinet (1) is provided with an operation chamber (2), and the bottom end of the operation chamber (2) is provided with a bottom air duct (10), the top end of the operation chamber (2) is provided with a top air duct (5), and the bottom end of the inside of the top air duct (5) is mounted with a supply air filter (11), one side of the inside of the top air duct (5) is mounted with a supply air fan (12), and one side of the supply air fan (12) is provided with a supply air port (13), the top end of the top air duct (5) is mounted with a reducing pipe (6), and the bottom end of the reducing pipe (6) is mounted with an exhaust fan (17), one side of the cabinet (1) is mounted with a filter box (9), and the top end of the filter box (9) is provided with an exhaust port (8), the filter box (9) and the reducing pipe (6) are mounted with an exhaust pipe (7), and the exhaust pipe (7) extends to the inside of the filter box (9), the inside of the filter box (9) is provided with an air disc (15), the inside of the filter box (9) is provided with high alcohol (16), and the inside of the exhaust port (8) is mounted with an exhaust filter (14).

2. The dual-filterable biological safety cabinet of claim 1, wherein: The air disc (15) is arranged at the bottom end of the inside of the filter box (9), and is fixedly connected between the air disc (15) and one end of the exhaust pipe (7).

3. The dual-filterable biological safety cabinet of claim 1, wherein: The front end of the operation chamber (2) is mounted with a glass door (3), and the outside of the top end of the glass door (3) is provided with a liquid storage groove (4), and the outside of the liquid storage groove (4) is provided with a liquid adding port (20).

4. The dual-filterable biological safety cabinet of claim 3, wherein: The inside of the liquid storage groove (4) is inlaid with a cleaning cloth (18), and the cleaning cloth (18) is in a strip shape, the length of the cleaning cloth (18) is greater than the length of the glass door (3), and the cleaning cloth (18) is in contact with the outer wall of the glass door (3).

5. A dual-filterable biological safety cabinet according to claim 4, wherein: One side of the cleaning cloth (18) is provided with a cotton fiber rod (19), and the cotton fiber rod (19) extends to the inside of the liquid storage groove (4).

6. A dual-filterable biological safety cabinet according to claim 5, wherein: The cotton fiber rod (19) is provided in several groups, and the cotton fiber rod (19) is arranged and distributed on the liquid storage groove (4) at equal intervals.

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