Airflow detection device for biological safety cabinet

Abstract

The utility model discloses a biosafety cabinet airflow detection device, and the device comprises a driving mechanism which is located outside a biosafety cabinet and moves in the longitudinal, transverse and vertical directions of the biosafety cabinet; the detection module is arranged on the driving mechanism; and the control module is electrically connected with the detection module and the driving mechanism. The positioning module comprises a first positioner and a second positioner; the first positioners are respectively mounted on the detection modules, and the second positioners are arranged at detection points of the biological safety cabinet according to actual detection requirements; and the first positioner and the second positioner are respectively connected with the control module. The positioning module provided by the utility model comprises the first positioners arranged at the detection points and the second positioners mounted on the detection module, and the control module controls the driving mechanism, so that the detection module is accurately positioned at the measurement points provided with the first positioners for measurement, and the problems that in the prior art, positioning is inaccurate, and the measurement accuracy is poor are solved. And random errors are easy to occur in detection.

Description

Technical Field

[0001] The present application relates to an airflow detection device for a biosafety cabinet, and belongs to the technical field of biosafety detection. Background Art

[0002] The biological safety cabinet (BSC), also known as a negative pressure filter exhaust cabinet, is mainly used to prevent the operator and the environment from being exposed to the bioaerosols generated during the experiment. This equipment needs to detect its airflow velocity during use. At present, when the airflow into the biological safety cabinet is detected, the inspector uses a steel tape measure to locate the horizontal coordinate at the front window operation port of the biological safety cabinet, and uses the scale of the handheld anemometer probe to locate the vertical coordinate. The approximate position of each detection point is located in the air, and then the handheld anemometer is used for detection. After each point is detected, the next point needs to be manually repeated before the previous action positioning is detected. The handheld detection method requires manual positioning, and then the handheld anemometer probe is moved to the manually positioned place. On the one hand, the process needs to be repeated every time the handheld anemometer probe is detected, resulting in a long detection time. On the other hand, when the handheld anemometer probe is moved to the positioned detection point, the position moved due to visual errors is not the actual detection point, resulting in inaccurate positioning, which makes the detection have large manual operation errors and random errors. Utility Model Content

[0003] In view of this, the present application provides a biosafety cabinet airflow detection device, which is used to solve the problem in the prior art that the anemometer probe cannot be accurately positioned at each detection point when moving during detection, resulting in inaccurate positioning, which makes the detection have large manual operation errors and random errors. The specific solution is:

[0004] A biosafety cabinet airflow detection device, comprising:

[0005] A driving mechanism is located outside the biosafety cabinet, and the driving mechanism moves along the longitudinal, transverse and vertical directions of the biosafety cabinet;

[0006] A detection module is arranged on the driving mechanism;

[0007] The control module is electrically connected to the detection module and the driving mechanism respectively.

[0008] A positioning module, comprising a first positioner and a second positioner;

[0009] The first positioners are respectively installed on the detection modules, and the second positioners are arranged at various detection points of the biosafety cabinet according to actual detection requirements;

[0010] The driving mechanism, the first positioner and the second positioner are respectively connected to a control module.

[0011] Preferably, the driving mechanism comprises a transverse driving mechanism arranged along the transverse direction of the biosafety cabinet;

[0012] The transverse driving mechanism is provided with a longitudinal driving mechanism;

[0013] The longitudinal drive mechanism moves along the extension direction of the transverse drive, and a vertical drive mechanism is provided on the longitudinal drive mechanism;

[0014] The vertical drive mechanism rotates along the connection with the longitudinal drive mechanism.

[0015] A detection module is installed on the mechanism.

[0016] Preferably, the transverse driving mechanism, the longitudinal driving mechanism and the vertical driving mechanism respectively include a driving conveyor belt assembly, a guide rod and a mounting seat;

[0017] The driving conveyor belt assembly and the guide rod are respectively mounted on the mounting seat;

[0018] The driving conveyor belt assembly is respectively arranged along the transverse direction, longitudinal direction and vertical direction of the biological safety cabinet;

[0019] The guide rods are respectively arranged in parallel with the drive conveyor belt assembly, and the guide rods are respectively located on one side of the drive conveyor belt assembly facing the biosafety cabinet.

[0020] Preferably, the mounting seat includes a transverse mounting seat, a longitudinal mounting seat and a vertical mounting seat;

[0021] The transverse mounting seat is arranged along the transverse direction of the biosafety cabinet, and the driving conveyor belt assembly and the guide rod arranged along the transverse direction of the biosafety cabinet are respectively installed on the transverse driving mechanism;

[0022] The longitudinal mounting seat is arranged along the longitudinal direction of the biosafety cabinet, one end of the longitudinal drive mechanism mounting seat is connected to the transversely arranged driving conveyor belt assembly, the other end of the longitudinal mounting seat faces the biosafety cabinet, the longitudinal mounting seat is installed on the transversely arranged guide rod, and moves along the axial direction of the transversely arranged guide rod, and the driving conveyor belt assembly and the guide rod arranged along the longitudinal direction of the biosafety cabinet are respectively and parallelly installed on the top of the longitudinal mounting seat;

[0023] The vertical mounting seat is located on one side of the guide rod arranged longitudinally along the biosafety cabinet, and one end is movably connected to the guide rod arranged longitudinally, and the other end of the vertical mounting seat rotates around the connection between the vertical mounting seat and the guide rod arranged longitudinally, and the driving conveyor belt assembly and the guide rod arranged vertically along the biosafety cabinet are respectively and parallelly mounted on the vertical mounting seat;

[0024] The detection module is installed on a vertically arranged guide rod and reciprocates along the axial direction of the vertically arranged guide rod.

[0025] Preferably, a rotation driving member is provided between the vertical mounting seat and the longitudinally arranged guide rod;

[0026] The rotary drive member includes a drive plate;

[0027] The driving plate is slidably connected to the longitudinally arranged guide rod, one end of the driving plate is connected to the longitudinally arranged conveyor belt assembly, and the other end of the driving plate is rotatably connected to the vertical mounting seat.

[0028] Preferably, the driving conveyor belt assembly comprises a driving motor, a conveyor belt, a driving wheel and a driven wheel;

[0029] The conveyor belts are respectively arranged along the extension direction of the mounting seats;

[0030] The driving wheel and the driven wheel are respectively located at two ends of the conveyor belt and connected to the conveyor belt;

[0031] The output end of the driving motor is connected to the driving wheel, and the driving motors are electrically connected to the control modules respectively.

[0032] Preferably, a clamp is provided between the vertically arranged guide rod and the detection module;

[0033] The clamp is mounted on the vertically arranged guide rod and moves along the axial direction of the vertically arranged guide rod;

[0034] The detection module is detachably connected to the fixture.

[0035] Preferably, the clamp comprises a jacket and a lock;

[0036] The jacket is provided with a detection module installation cavity along the vertical direction, a bayonet is provided on one side of the installation cavity, and the other side of the jacket is installed on the vertically arranged guide rod and moves along the axial direction of the vertically arranged guide rod;

[0037] The bayonet is communicated with the mounting cavity, and connecting grooves are correspondingly arranged on both sides of the bayonet;

[0038] The connecting groove is in a horizontal Ω shape, and the opening is connected to the bayonet;

[0039] One end of the lock buckle is inserted into the connecting groove to fix the detection module.

[0040] The beneficial effects of this application include:

[0041] The driving mechanism provided in the present application is used to realize the movement of the detection module to each detection point; the detection module is used to collect the airflow velocity at each detection point; the positioning module provided includes a first positioner arranged at each detection point and a second positioner installed on the detection module, and the driving mechanism is controlled by the control module to accurately position the detection module installed with the second positioner at each measurement point provided with the first positioner for measurement, thereby avoiding inaccurate positioning in the prior art, which makes the detection prone to random errors;

[0042] The present application is an external detection device. The entire detection process (including the positioning of the detection module and the collection of airflow velocity) is realized through the control module. There is no human intervention in the entire process, which avoids manual operation errors and avoids the need to manually move the collection module to each detection point for each detection, which affects the detection efficiency due to repeated operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a schematic diagram of the structure of an airflow detection device for a biological safety cabinet in this application;

[0044] Figure 2 A top view of a driving mechanism in an airflow detection device for a biological safety cabinet according to the present application;

[0045] Figure 3 This is an axonometric diagram of a driving mechanism in an airflow detection device for a biological safety cabinet in the present application;

[0046] Figure 4 This is a schematic diagram of the connection between a fixture and a detection module in an airflow detection device for a biological safety cabinet in the present application;

[0047] Figure 5 A side view of a fixture in an airflow detection device for a biological safety cabinet according to the present application;

[0048] Figure 6 This is a schematic diagram of the structure of a jacket in an airflow detection device for a biological safety cabinet in the present application;

[0049] Figure 7 This is a schematic diagram of the structure of a lock in an airflow detection device for a biological safety cabinet in the present application;

[0050] Figure 8 This application provides a detection point layout diagram of an airflow detection device for a biological safety cabinet.

[0051] List of parts and reference numerals:

[0052] 1. Biosafety cabinet; 2. Horizontal mounting seat; 3. Horizontal drive motor; 4. Horizontal conveyor belt; 5. Longitudinal mounting seat; 6. Horizontally arranged guide rod; 7. Detection module; 8. Longitudinal conveyor belt; 9. Longitudinal guide rod; 10. Drive plate; 11. Vertical conveyor belt; 12 Vertical mounting seat; 13. Operating part; 14. Jacket; 15. Vertical drive motor; 16. Driven gear; 17. Drive gear; 18. Rotary drive motor; 19. Locking part; 20. Longitudinal drive motor; 21. Lock buckle; 22. Vertically arranged guide rod; 23. Bolt assembly; 24. Connecting groove; 25. Bayonet. DETAILED DESCRIPTION

[0053] The present application is described in detail below with reference to embodiments, but the present application is not limited to these embodiments.

[0054] According to the attached Figure 1-7 A biosafety cabinet airflow detection device is shown, comprising:

[0055] A driving mechanism is located outside the biosafety cabinet 1, and the driving mechanism includes a transverse driving mechanism arranged along the transverse direction of the biosafety cabinet 1;

[0056] The transverse driving mechanism is provided with a longitudinal driving mechanism;

[0057] The longitudinal drive mechanism moves along the extension direction of the transverse drive, and a vertical drive mechanism is provided on the longitudinal drive mechanism;

[0058] The vertical driving mechanism rotates along the connection with the longitudinal driving mechanism, and a detection module 7 is installed on the vertical driving mechanism.

[0059] The driving mechanism moves along the longitudinal, transverse and vertical directions of the biosafety cabinet 1; the detection module 7 is arranged on the vertical driving mechanism. In one embodiment of the present application, the detection module 7 is an anemometer probe, and its specification / model is: ZD-30FS;

[0060] The control module is electrically connected to the detection module 7 and the driving mechanism. In one embodiment of the present application, the control module is a programmable controller, and its specification / model is: Fx1S-20MT-001;

[0061] A positioning module, comprising a first positioner and a second positioner;

[0062] The first positioners are respectively installed on the detection modules 7, and the second positioners are arranged at various detection points of the biological safety cabinet according to actual detection requirements;

[0063] The driving mechanism, the first positioner and the second positioner are respectively connected to a control module.

[0064] Furthermore, the transverse driving mechanism, the longitudinal driving mechanism and the vertical driving mechanism respectively include a driving conveyor belt assembly, a guide rod and a mounting seat;

[0065] The driving conveyor belt assembly and the guide rod are respectively mounted on the mounting seat;

[0066] The driving conveyor belt assembly is respectively arranged along the transverse direction, longitudinal direction and vertical direction of the biological safety cabinet 1;

[0067] The guide rods are respectively arranged in parallel with the driving conveyor belt assembly, and the guide rods are respectively located on one side of the driving conveyor belt assembly facing the biosafety cabinet 1 .

[0068] Furthermore, the mounting seat includes a transverse mounting seat 2, a longitudinal mounting seat 5 and a vertical mounting seat;

[0069] The transverse mounting seat 2 is arranged along the transverse direction of the biosafety cabinet 1, and the driving conveyor belt assembly and the guide rod arranged along the transverse direction of the biosafety cabinet are respectively installed on the transverse driving mechanism;

[0070] The longitudinal mounting seat 5 is arranged along the longitudinal direction of the biosafety cabinet 1, one end of the longitudinal drive mechanism mounting seat is connected to the transversely arranged driving conveyor belt assembly, the other end of the longitudinal mounting seat 5 faces the biosafety cabinet, the longitudinal mounting seat 5 is mounted on the transversely arranged guide rod 6, and moves along the axial direction of the transversely arranged guide rod 6, the driving conveyor belt assembly and the guide rod arranged along the longitudinal direction of the biosafety cabinet are respectively and parallelly mounted on the top of the longitudinal mounting seat 5;

[0071] The vertical mounting seat is located on one side of the guide rod arranged longitudinally along the biosafety cabinet, and one end is movably connected to the guide rod arranged longitudinally, and the other end of the vertical mounting seat rotates around the connection between the vertical mounting seat and the guide rod arranged longitudinally, and the driving conveyor belt assembly and the guide rod arranged vertically along the biosafety cabinet are respectively and parallelly mounted on the vertical mounting seat;

[0072] The detection module 7 is mounted on a vertically arranged guide rod 22 and reciprocates along the axial direction of the vertically arranged guide rod. That is:

[0073] The transverse driving mechanism includes a transverse driving mechanism along the biosafety cabinet (i.e. Figure 1The invention relates to a driving conveyor belt assembly (in the X direction in the horizontal direction), a transversely arranged guide rod 6 and a transversely arranged driving mounting seat. The transversely arranged guide rod 6 is located on the side of the transversely arranged driving conveyor belt assembly facing the biosafety cabinet, the transversely arranged guide rod 6 is parallel to the transversely arranged driving conveyor belt assembly, and the transversely arranged guide rod 6 and the transversely arranged driving conveyor belt assembly are respectively mounted on the transversely arranged driving mounting seat; the transversely arranged guide rod 6 is mounted on the transverse mounting seat 2 through a connecting plate, wherein the connecting plate is vertically connected to the top of both ends of the transverse mounting seat 2, and both ends of the transversely arranged guide rod 6 are respectively fixed on the connecting plate.

[0074] The longitudinal drive mechanism includes a longitudinal arrangement (i.e., an attachment) along the biosafety cabinet Figure 1 The invention relates to a driving conveyor belt assembly (in the Y direction in the longitudinal direction), a longitudinally arranged guide rod and a longitudinally arranged driving mounting seat. The longitudinally arranged guide rod is located on one side of the longitudinally arranged driving conveyor belt assembly, the longitudinally arranged guide rod is parallel to the longitudinally arranged driving conveyor belt assembly, and the longitudinally arranged guide rod and the longitudinally arranged driving conveyor belt assembly are respectively mounted on the longitudinal driving mounting seat; the longitudinally arranged guide rod is mounted on the longitudinal mounting seat 5 through a connecting plate, wherein the connecting plate is vertically connected to the top of both ends of the longitudinal mounting seat 5, and both ends of the longitudinally arranged guide rod are respectively fixed on the connecting plate.

[0075] The vertical drive mechanism includes a vertically arranged along the biosafety cabinet (i.e., attached Figure 1 The vertical drive belt assembly and the vertical guide rod 22 are located on the side of the vertical drive mounting seat facing away from the longitudinal drive mounting seat. The vertical guide rod 22 is parallel to the vertical drive belt assembly and is located on the side of the vertical drive belt assembly facing the biosafety cabinet. The vertical guide rod 22 is mounted on the vertical mounting seat through a connecting plate, wherein the connecting plate is vertically connected to the two ends of the vertical mounting seat facing away from the side of the longitudinal mounting seat 5, and the two ends of the longitudinal guide rod are respectively fixed on the connecting plate.

[0076] In the present application, the height of the transverse mounting seat 2 matches the height of the detection part of the biosafety cabinet, the movement stroke of the longitudinal mounting seat 5 is greater than the transverse dimension of the biosafety cabinet, the movement stroke of the vertical mounting seat is greater than the longitudinal dimension of the biosafety cabinet, and the length of the vertical mounting seat is slightly smaller than the overall height of the detection part of the biosafety cabinet. In this way, the vertical mounting seat can be rotated around the direction of the connection with the longitudinally arranged guide rod 9, and the vertical drive mechanism and the detection module 7 are integrated into the biosafety cabinet. At this time, the vertical mounting seat is parallel to the longitudinal mounting seat 5.

[0077] Furthermore, a rotation driving member is provided between the vertical mounting seat and the longitudinally arranged guide rod;

[0078] The rotary drive member includes a drive plate 10;

[0079] The driving plate 10 is slidably connected to the longitudinally arranged guide rod, one end of the driving plate 10 is connected to the longitudinally arranged conveyor belt assembly, and the other end of the driving plate 10 is rotatably connected to the vertical mounting seat.

[0080] In one embodiment of the present application, the other end of the driving plate 10 is rotatably connected to the vertical mounting seat by rotating the driving motor 18, the driving gear 17, the driven gear 16 and the rotating shaft;

[0081] The driving gear 17 and the driven gear 16 are located on the side of the driving plate 10 facing away from the longitudinally arranged conveyor belt assembly, and the driving gear 17 is located on the side of the driven gear 16 facing away from the vertical mounting seat, and the driving gear 17 is meshed with the driven gear 16;

[0082] The connection between the driving gear 17 and the driven gear 16 and the driving plate 10 is achieved through a rotating shaft respectively;

[0083] One of the rotating shafts passes through the driving gear 17, one end of which is rotatably connected to a side of the conveyor belt assembly disposed opposite to the longitudinal direction of the driving plate 10, and the other end of which is connected to the output end of the rotating driving motor 18;

[0084] Another rotating shaft passes through the driven gear 16, one end of which is rotatably connected to the side of the conveyor belt assembly of the driving plate 10 that is arranged away from the longitudinal direction, and the other end of which is connected to the side of the vertical mounting seat that faces the longitudinal mounting seat 5;

[0085] Among them, the rotating drive motor 18 is a reduction motor, and its specification / model is: Dongbang motor / DPG. The rotating drive motor 18 drives the driving gear 17 to rotate, driving the driven gear 16 to rotate synchronously, thereby realizing the adjustment of the rotation angle of the connection between the vertical mounting seat 12 and the longitudinal guide rod.

[0086] Further, the driving conveyor belt assembly includes a driving motor, a conveyor belt, a driving wheel and a driven wheel;

[0087] The conveyor belts are respectively arranged along the extension direction of the mounting seats;

[0088] The driving wheel and the driven wheel are respectively located at two ends of the conveyor belt and connected to the conveyor belt;

[0089] The output end of the drive motor is connected to the drive wheel, and the drive motor is electrically connected to the control module. That is, in this application:

[0090] The conveyor belt assembly includes a horizontally arranged conveyor belt assembly, a longitudinally arranged conveyor belt assembly and a vertically arranged conveyor belt assembly, wherein:

[0091] The transverse conveyor belt assembly includes: a transverse driving motor 3, a transverse conveyor belt, a transverse driving wheel and a transverse driven wheel. The transverse conveyor belt 4 is respectively arranged along the extension direction of the transverse mounting seat 2; the transverse driving wheel and the transverse driven wheel are respectively located at both ends of the transverse conveyor belt 4 and connected to the transverse conveyor belt 4; the output end of the transverse driving motor 3 is connected to the transverse driving wheel;

[0092] The longitudinally arranged conveyor belt assembly includes: a longitudinal drive motor 20, a longitudinally arranged conveyor belt, a longitudinal drive wheel and a longitudinal driven wheel. The longitudinal conveyor belt 8 is arranged along the extension direction of the longitudinal mounting seat 5; the longitudinal drive wheel and the longitudinal driven wheel are respectively located at both ends of the longitudinal conveyor belt 8 and connected to the longitudinal conveyor belt 8; the output end of the longitudinal drive motor 20 is connected to the longitudinal drive wheel;

[0093] The vertical conveyor belt assembly includes: a vertical drive motor 15, a vertical conveyor belt, a vertical drive wheel and a vertical driven wheel. The vertical conveyor belt 11 is respectively arranged along the extension direction of the vertical mounting seat 12; the vertical drive wheel and the vertical driven wheel are respectively located at both ends of the vertical conveyor belt 11 and connected to the vertical conveyor belt 11; the output end of the vertical drive motor 15 is connected to the vertical drive wheel;

[0094] The transverse drive motor 3 , the vertical drive motor 15 , and the longitudinal drive motor 20 are respectively connected to the control module. The transverse drive motor 3 , the vertical drive motor 15 , and the longitudinal drive motor 20 are respectively precision motors, and their specifications / models are: DAV6-PG.

[0095] Furthermore, a clamp is provided between the vertically arranged guide rod and the detection module 7;

[0096] The clamp is mounted on the guide rod arranged vertically, and moves along the axial direction of the guide rod arranged vertically;

[0097] The detection module 7 is detachably connected to the fixture.

[0098] Further, the clamp includes a jacket 14 and a lock buckle 21;

[0099] The jacket 14 is provided with a detection module installation cavity along the vertical direction, and a bayonet 25 is provided on one side of the installation cavity. The other side of the jacket 14 is detachably connected to a vertically arranged guide rod through a bolt assembly 23, and is installed on the vertically arranged guide rod and moves along the axial direction of the vertically arranged guide rod.

[0100] The bayonet is communicated with the mounting cavity, and connecting grooves are correspondingly arranged on both sides of the bayonet;

[0101] The connecting groove 24 is horizontal and similar to an "Ω" shape, and the opening is connected to the bayonet 25;

[0102] One end of the lock buckle 21 is inserted into the connection slot to fix the detection module. In the present application, the overall thickness of the lock buckle 21 is less than the height of the opening of the connection slot 24. The lock buckle 21 includes an operating part 13 and a locking part 19. The operating part 13 is fixedly connected to the locking part 19. The operating part 13 can be a rod-shaped or plate-shaped mechanism.

[0103] The locking portion 19 is a U-shaped structure with its opening facing away from the operating portion 13. The thickness of the operating portion 13 is less than the height of the opening of the connecting groove 24. The length of the operating portion 13 matches the diameter of the arc portion of the connecting groove. The width of the operating portion 13 is greater than the diameter of the installation cavity. When installing the anemometer probe, the anemometer probe is inserted into the installation cavity, and then the lock buckle 21 is horizontally inserted into the connecting groove 24, and then rotated downward until the lock buckle 21 is parallel to the anemometer probe, and the anemometer probe is clamped in the installation cavity. The size of the installation cavity matches the installation size of the anemometer probe, and the clamp is easy to operate.

[0104] During testing, this application:

[0105] As attached Figure 8 As shown, according to the airflow pattern detection requirements of the biological safety cabinet: According to the standard YY0569-2011 "Class II Biological Safety Cabinet" standard 6.3.7 Downward airflow: the test points should be located above the work area on a plane 100mm above the front window opening height and distributed at equal intervals, and the square grid formed should not be larger than 150mm×150mm. There should be at least 3 rows of test points, and each row should have at least 7 test points. The distance between the test area boundary and the inner wall of the safety cabinet and the front window operation port should be 150mm. Install the first positioner at each test point;

[0106] Measure the airflow velocity flowing into the front window operation port to determine the average velocity: Use the anemometer probe to measure the airflow velocity at two rows of points on the front window operation port screen. The first row is about 25% of the opening height below the upper edge of the front window operation port; the second row is about 75% of the opening height below the upper edge of the front window operation port. The measurement points are spaced about 100mm apart. The average value of all measured values ​​represents the inflow airflow velocity. When detecting the downward airflow velocity, the control module controls the rotation of the horizontal drive motor, the longitudinal drive motor, and the vertical drive motor according to the position coordinates of the first locator at these 21 test points to adjust the anemometer probe in the horizontal, longitudinal, and vertical positions. When the second locator installed on the anemometer probe reaches the position of each first locator in sequence, the control module controls the anemometer probe to collect data, thereby setting the movement specification to a minimum accuracy of ±0.2mm, thereby improving the detection accuracy.

[0107] The above are only a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with the profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A biosafety cabinet airflow detection device, characterized in that: include: A driving mechanism is located outside the biosafety cabinet, and the driving mechanism moves along the longitudinal, transverse and vertical directions of the biosafety cabinet; A detection module is arranged on the driving mechanism; A control module, electrically connected to the detection module and the driving mechanism respectively; A positioning module, comprising a first positioner and a second positioner; The first positioners are respectively installed on the detection modules, and the second positioners are arranged at various detection points of the biosafety cabinet according to actual detection requirements; The driving mechanism, the first positioner and the second positioner are respectively connected to a control module.

2. A biosafety cabinet airflow detection device according to claim 1, characterized in that: The driving mechanism comprises a transverse driving mechanism arranged along the transverse direction of the biosafety cabinet; The transverse driving mechanism is provided with a longitudinal driving mechanism; The longitudinal drive mechanism moves along the extension direction of the transverse drive, and a vertical drive mechanism is provided on the longitudinal drive mechanism; The vertical driving mechanism rotates along the connection with the longitudinal driving mechanism, and a detection module is installed on the vertical driving mechanism.

3. A biosafety cabinet airflow detection device according to claim 2, characterized in that: The transverse driving mechanism, the longitudinal driving mechanism and the vertical driving mechanism respectively include a driving conveyor belt assembly, a guide rod and a mounting seat; The driving conveyor belt assembly and the guide rod are respectively mounted on the mounting seat; The driving conveyor belt assembly is respectively arranged along the transverse direction, longitudinal direction and vertical direction of the biological safety cabinet; The guide rods are respectively arranged in parallel with the drive conveyor belt assembly, and the guide rods are respectively located on one side of the drive conveyor belt assembly facing the biosafety cabinet.

4. A biosafety cabinet airflow detection device according to claim 3, characterized in that: The mounting seat includes a transverse mounting seat, a longitudinal mounting seat and a vertical mounting seat; The transverse mounting seat is arranged along the transverse direction of the biosafety cabinet, and the driving conveyor belt assembly and the guide rod arranged along the transverse direction of the biosafety cabinet are respectively installed on the transverse driving mechanism; The longitudinal mounting seat is arranged along the longitudinal direction of the biosafety cabinet, one end of the longitudinal mounting seat is connected to the transversely arranged driving conveyor belt assembly, the other end of the longitudinal mounting seat faces the biosafety cabinet, the longitudinal mounting seat is installed on the transversely arranged guide rod, and moves along the axial direction of the transversely arranged guide rod, and the driving conveyor belt assembly and the guide rod arranged along the longitudinal direction of the biosafety cabinet are respectively and parallelly installed on the top of the longitudinal mounting seat; The vertical mounting seat is located on one side of the guide rod arranged longitudinally along the biosafety cabinet, and one end is movably connected to the guide rod arranged longitudinally, and the other end of the vertical mounting seat rotates around the connection between the vertical mounting seat and the guide rod arranged longitudinally, and the driving conveyor belt assembly and the guide rod arranged vertically along the biosafety cabinet are respectively and parallelly mounted on the vertical mounting seat; The detection module is installed on a vertically arranged guide rod and reciprocates along the axial direction of the vertically arranged guide rod.

5. A biosafety cabinet airflow detection device according to claim 4, characterized in that: A rotation driving member is arranged between the vertical mounting seat and the longitudinally arranged guide rod; The rotary drive member includes a drive plate; The driving plate is slidably connected to the longitudinally arranged guide rod, one end of the driving plate is connected to the longitudinally arranged driving conveyor belt assembly, and the other end of the driving plate is rotatably connected to the vertical mounting seat.

6. A biosafety cabinet airflow detection device according to claim 4, characterized in that: The driving conveyor belt assembly comprises a driving motor, a conveyor belt, a driving wheel and a driven wheel; The conveyor belts are respectively arranged along the extension direction of the mounting seats; The driving wheel and the driven wheel are respectively located at two ends of the conveyor belt and connected to the conveyor belt; The output end of the driving motor is connected to the driving wheel, and the driving motors are electrically connected to the control modules respectively.

7. A biosafety cabinet airflow detection device according to claim 4, characterized in that: A clamp is arranged between the vertically arranged guide rod and the detection module; The clamp is mounted on the vertically arranged guide rod and moves along the axial direction of the vertically arranged guide rod; The detection module is detachably connected to the fixture.

8. The biosafety cabinet airflow detection device according to claim 7, characterized in that: The clamp comprises a jacket and a lock buckle; The jacket is provided with a detection module installation cavity along the vertical direction, a bayonet is provided on one side of the installation cavity, and the other side of the jacket is installed on the vertically arranged guide rod and moves along the axial direction of the vertically arranged guide rod; The bayonet is communicated with the mounting cavity, and connecting grooves are correspondingly arranged on both sides of the bayonet; The connecting groove is in a horizontal Ω shape, and the opening is connected to the bayonet; One end of the lock buckle is inserted into the connecting groove to fix the detection module.

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