Biosafety cabinet with wind speed sensor

Abstract

The utility model discloses a biological safety cabinet with a wind speed sensor, and relates to the technical field of biological safety cabinets. The biological safety cabinet comprises a biological safety cabinet body, a protection plate is hinged to the side face of the biological safety cabinet body, a filter screen is fixedly connected to the top of the biological safety cabinet body, a ventilation plate is fixedly connected to the top of the biological safety cabinet body, and a fixing plate is fixedly connected to the inner wall of the biological safety cabinet body. The top of the fixing plate is fixedly connected with a wind speed sensor. Through cooperation of the ventilation plate, the wind speed sensor, the upper ventilation opening and the lower ventilation opening, airflow flows to the air inlet in the side face of the wind speed sensor through the ventilation plate, then flows out of the notch of the shell of the wind speed sensor through the interior of the wind speed sensor, and then enters the lower ventilation opening through the upper ventilation opening. And finally, the airflow reaches the interior of the biosafety cabinet main body, so that a complete air duct is formed, and the ventilation effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of biological safety cabinets, in particular to a biological safety cabinet with a wind speed sensor. Background Art

[0002] A biological safety cabinet is a device designed to protect operators, laboratory environment and experimental materials from possible aerosols and splashes when operating infectious experimental materials such as primary cultures, bacterial strains and diagnostic specimens.

[0003] The patent with patent announcement number CN220183271U discloses a biological safety cabinet, which involves the field of biological cabinet detection technology. The biological safety cabinet provided by the patent adds a detection mechanism to the biological safety cabinet body, so that the detection part can detect the wind speed at different positions, and then obtain the average wind speed by calculation to improve the accuracy of the detection. At the same time, a pressure sensor is added to detect the pressure of the operating chamber in the safety cabinet body. Combined with the wind speed value and the pressure value, the specific reason for the alarm of the biological safety cabinet can be accurately determined, which solves the problem that the inaccurate wind speed detection of the existing biological safety cabinet is easy to cause false alarms and affect user use.

[0004] However, the current biosafety cabinet has the following problems: it is difficult for the biosafety cabinet to allow airflow to flow through a specific channel, thereby failing to achieve a complete ventilation effect. Therefore, we propose a biosafety cabinet with a wind speed sensor. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a biosafety cabinet with a wind speed sensor, which solves the problems raised in the above background technology.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a biosafety cabinet with a wind speed sensor, comprising a biosafety cabinet body, a protective plate hinged on the side of the biosafety cabinet body, a filter screen fixedly connected to the top of the biosafety cabinet body, a ventilation plate fixedly connected to the top of the biosafety cabinet body, a fixed plate fixedly connected to the inner wall of the biosafety cabinet body, a wind speed sensor fixedly connected to the top of the fixed plate, a fixed block fixedly connected to the inner wall of the biosafety cabinet body, an oblique fixed block fixedly connected to the top of the inner wall of the biosafety cabinet body, and the bottom of the oblique fixed block An upper vent is provided on the top of the fixing plate, a lower vent is provided on the top of the fixing plate, a placement plate is fixedly connected to the inner wall of the biosafety cabinet body, the upper vent is located above the lower vent, the placement plate is located below the lower vent, the ventilation plate is located above the wind speed sensor, two fixed blocks are provided, and are symmetrical to each other along the central axis of the biosafety cabinet body, the airflow will flow to the air inlet on the side of the wind speed sensor through the ventilation plate, and then pass through the inside of the wind speed sensor and flow out from the notch of the wind speed sensor shell, and then the airflow enters the lower vent through the upper vent, and finally the airflow reaches the inside of the biosafety cabinet body.

[0007] The utility model provides a biological safety cabinet with a wind speed sensor. It has the following beneficial effects:

[0008] (1) The utility model cooperates with the ventilation plate, the wind speed sensor, the upper ventilation port and the lower ventilation port so that the airflow flows through the ventilation plate to the air inlet on the side of the wind speed sensor, then flows through the interior of the wind speed sensor and out of the notch of the wind speed sensor housing, then enters the lower ventilation port through the upper ventilation port, and finally reaches the interior of the biological safety cabinet body, thereby forming a complete air duct and achieving the ventilation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A schematic diagram of the utility model as a whole;

[0010] Figure 2 This is an enlarged schematic diagram of the structure of the filter screen of the utility model;

[0011] Figure 3 This is an enlarged schematic diagram of the structure of the fixed plate of the utility model;

[0012] Figure 4 It is an enlarged schematic diagram of the structure of the wind speed sensor of the utility model.

[0013] In the figure: 1. Biosafety cabinet body; 2. Protective plate; 3. Filter; 4. Ventilation plate; 5. Wind speed sensor; 6. Upper vent; 7. Fixing plate; 8. Lower vent; 9. Fixing block; 10. Placement plate; 11. Oblique fixing block. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0015] See also Figure 1-4 An embodiment of the utility model is: a biosafety cabinet with a wind speed sensor, comprising a biosafety cabinet body 1, a protective plate 2 hinged on the side of the biosafety cabinet body 1, a filter screen 3 fixedly connected to the top of the biosafety cabinet body 1, a ventilation plate 4 fixedly connected to the top of the biosafety cabinet body 1, a fixed plate 7 fixedly connected to the inner wall of the biosafety cabinet body 1, a wind speed sensor 5 fixedly connected to the top of the fixed plate 7, a fixed block 9 fixedly connected to the inner wall of the biosafety cabinet body 1, an oblique fixed block 11 fixedly connected to the top of the inner wall of the biosafety cabinet body 1, and the oblique fixed block 1 An upper vent 6 is provided at the bottom of 1, a lower vent 8 is provided at the top of the fixing plate 7, a placement plate 10 is fixedly connected to the inner wall of the biosafety cabinet body 1, the upper vent 6 is located above the lower vent 8, the placement plate 10 is located below the lower vent 8, the ventilation plate 4 is located above the wind speed sensor 5, two fixing blocks 9 are provided, and are symmetrical to each other along the central axis of the biosafety cabinet body 1. Through the arrangement of the above structure, the airflow enters the lower vent 8 through the upper vent 6, and finally reaches the interior of the biosafety cabinet body 1, thereby forming a complete air duct to achieve a ventilation effect.

[0016] When in use, the air flow will flow through the ventilation plate 4 to the air inlet on the side of the wind speed sensor 5, then pass through the interior of the wind speed sensor 5 and flow out from the slot on the outer shell of the wind speed sensor 5, then the air flow will enter the lower ventilation port 8 through the upper ventilation port 6, and finally the air flow will reach the interior of the biological safety cabinet body 1, thereby forming a complete air duct to achieve the ventilation effect.

[0017] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A biosafety cabinet with a wind speed sensor, comprising a biosafety cabinet body (1), characterized in that: A protective plate (2) is hingedly connected to the side of the biosafety cabinet body (1), a filter screen (3) is fixedly connected to the top of the biosafety cabinet body (1), a ventilation plate (4) is fixedly connected to the top of the biosafety cabinet body (1), a fixing plate (7) is fixedly connected to the inner wall of the biosafety cabinet body (1), a wind speed sensor (5) is fixedly connected to the top of the fixing plate (7), a fixing block (9) is fixedly connected to the inner wall of the biosafety cabinet body (1), an oblique fixing block (11) is fixedly connected to the top of the inner wall of the biosafety cabinet body (1), an upper ventilation opening (6) is provided at the bottom of the oblique fixing block (11), and a lower ventilation opening (8) is provided at the top of the fixing plate (7).

2. A biological safety cabinet with a wind speed sensor according to claim 1, characterized in that: A placement plate (10) is fixedly connected to the inner wall of the biological safety cabinet body (1).

3. A biological safety cabinet with a wind speed sensor according to claim 2, characterized in that: The upper ventilation opening (6) is located above the lower ventilation opening (8).

4. A biological safety cabinet with a wind speed sensor according to claim 3, characterized in that: The placement plate (10) is located below the lower vent (8).

5. A biological safety cabinet with a wind speed sensor according to claim 4, characterized in that: The ventilation plate (4) is located above the wind speed sensor (5).

6. A biological safety cabinet with a wind speed sensor according to claim 5, characterized in that: Two fixing blocks (9) are provided and are symmetrical to each other along the central axis of the biological safety cabinet body (1).

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