Biological aerosol sampler suitable for being mounted on nose of unmanned aerial vehicle

Abstract

The utility model relates to a biological aerosol sampler suitable for being mounted on a nose of an unmanned aerial vehicle, and relates to the technical field of aerosol sampling devices. An air inlet end and an air outlet end are arranged; an air inlet valve for controlling opening and closing of the air inlet end is arranged in the air outlet end, the air outlet end is connected with a fan, and the air inlet valve is automatically opened when the fan works; the sampling film is arranged in the air inlet valve seat, is positioned between the air inlet end and the air outlet end, and is configured to be used for capturing and collecting biological aerosol particles flowing through the air inlet valve seat; the anti-blocking cover is conical and is configured to cover the air inlet end, and a gap is formed between the anti-blocking cover and the air inlet valve seat. By arranging the conical anti-blocking cover covering the air inlet end of the air inlet valve seat, foreign matters are effectively prevented from entering the air inlet valve seat in a sampling state, the normal smoothness of the air inlet valve seat is ensured, the sampling efficiency of the sampler is effectively ensured, and meanwhile, the air resistance of the air inlet valve seat is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aerosol sampling devices, in particular to a biological aerosol sampler suitable for unmanned aerial vehicle head installation. BACKGROUND

[0002] The biological, physical and chemical properties of biological aerosols have a very important influence on respiratory infections. The self-characteristics of microorganisms contained in aerosols, i.e. the infectivity and virulence of microorganisms, are decisive factors for the consequences of respiratory infections. The difference in infection dose of microorganism aerosols of different species and different strains under similar conditions can reach several orders of magnitude. Collecting and studying biological aerosols and understanding the properties and characteristics of different types of biological aerosols can provide a research basis for the development of related drugs.

[0003] Chinese patent CN2024222422584 discloses a biological aerosol sampler carried by an unmanned aerial vehicle. The front end of the air inlet valve seat is open. In the sampling state, foreign matter may enter the air inlet valve seat and block the air inlet channel, affecting the sampling efficiency. Moreover, such a setting will result in large wind resistance, which needs to be improved. SUMMARY

[0004] In view of the above problems, the present application is proposed to provide a biological aerosol sampler suitable for unmanned aerial vehicle head installation to overcome the above problems or at least partially solve the above problems.

[0005] The biological aerosol sampler suitable for unmanned aerial vehicle head installation provided by the present application adopts the following technical solution:

[0006] The biological aerosol sampler suitable for unmanned aerial vehicle head installation comprises an air inlet valve seat, which is conical. The air inlet valve seat is provided with an air inlet end and an air outlet end, and the end faces of the air inlet end and the air outlet end are parallel. An air inlet valve for controlling the opening and closing of the air inlet end is arranged inside the air inlet valve seat. A fan is connected to the air outlet end, and the air inlet valve is configured to automatically open when the fan is working.

[0007] A sampling membrane is arranged in the air inlet valve seat and located between the air inlet end and the air outlet end, and is parallel to the end faces of the air inlet end and the air outlet end. The sampling membrane is configured to capture and collect biological aerosol particles flowing through the air inlet valve seat.

[0008] Further comprising,

[0009] A blocking prevention cover is conical and is configured to cover the air inlet end. The blocking prevention cover is arranged with a gap between the air inlet valve seat.

[0010] Optionally, a cross-shaped connecting frame is arranged at one end of the air inlet end close to the anti-blocking cover, and a connecting threaded hole is arranged in the middle of the connecting frame.

[0011] Optionally, a plurality of ribs are uniformly arranged along the circumferential direction of the taper surface of the air inlet valve seat, the ribs are arranged along the generatrix direction of the taper surface of the air inlet valve seat, and one end close to the anti-blocking cover is arranged in a tapered arc shape.

[0012] Optionally, a plurality of air holes are arranged along the length direction of the ribs.

[0013] Optionally, an exhaust valve is arranged at the air outlet end of the fan, and the exhaust valve is configured to be automatically opened when the fan is working.

[0014] In summary, the present application has the following beneficial technical effects: by arranging the conical anti-blocking cover covering the air inlet end of the air inlet valve seat, the present application effectively prevents foreign matter from entering the air inlet valve seat in the sampling state, ensures the normal smoothness of the air inlet valve seat, and further effectively ensures the sampling efficiency of the sampler, and also helps to reduce the wind resistance of the air inlet valve seat. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application.

[0016] Figure 2 is a schematic diagram of the structure of the air inlet valve seat in the embodiment of the present application.

[0017] Figure 3 is a schematic diagram of the connection relationship between the anti-blocking cover and the air inlet valve seat in the embodiment of the present application.

[0018] Marked: 1, air inlet valve seat; 11, air inlet end; 12, air outlet end; 13, rib; 131, air hole; 2, sampling membrane; 3, anti-blocking cover; 31, connecting threaded rod; 4, air inlet valve; 41, valve body; 42, valve rod; 43, spring; 5, fan; 6, exhaust valve; 7, connecting frame; 71, connecting threaded hole. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with the drawings of the embodiment of the present application. Obviously, the described embodiment is one embodiment of the present application, rather than all embodiments. Based on the described embodiment of the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0020] Unless otherwise defined, technical terms or scientific terms used in the present application shall have the ordinary meaning commonly understood by one of ordinary skill in the art to which the present application pertains.

[0021] The embodiment provides a bio-aerosol sampler suitable for being mounted on a head of a UAV.

[0022] With reference to Figure 1 , Figure 2 and Figure 3 , the bio-aerosol sampler suitable for being mounted on the head of the UAV comprises an air inlet valve seat 1, a sampling membrane 2 and a blocking cover 3.

[0023] The air inlet valve seat 1 is conical, and is provided with an air inlet end 11 and an air outlet end 12, and the end faces of the air inlet end 11 and the air outlet end 12 are arranged in parallel. The sampling membrane 2 is arranged in the air inlet valve seat 1, between the air inlet end 11 and the air outlet end 12, and is arranged in parallel to the end faces of the air inlet end 11 and the air outlet end 12, for capturing bio-aerosol particles flowing through the air inlet valve seat 1. The air inlet valve seat 1 is provided with an air inlet valve 4 for controlling opening and closing of the air inlet end 11, and the air outlet end 12 is connected with a fan 5, and the fan 5 is provided with an air outlet valve 6 in the air outlet end 12, and when the fan 5 works, the air inlet valve 4 and the air outlet valve 6 are automatically opened.

[0024] The air inlet valve 4 and the air outlet valve 6 each comprise a valve body 41, a valve rod 42 and a spring 43. The valve body 41 is internally provided with a valve channel, the air inlet end of the valve channel is arranged in a tapered shape, the valve rod 42 is arranged in the valve channel and can slide in the length direction of the valve channel, the valve rod 42 is provided with a plug for plugging the air inlet end 11 of the valve channel, the spring 43 is sleeved on the valve rod 42, and the valve channel is provided with a support frame for bearing the spring 43 at the air outlet end 12. The spring 43 is used for driving the valve rod 42 to move towards the air inlet end 11 of the valve channel, and then the valve channel is closed by the plug of the valve rod 42.

[0025] When the sampler samples in the air with the UAV, the fan 5 is started, the spring 43 of the air inlet valve 4 and the air outlet valve 6 is overcome, the air inlet valve 4 and the air outlet valve 6 are opened, the bio-aerosol particles in the air are captured by the sampling membrane 2 after passing through the air inlet valve 4, and then the air is discharged through the air outlet valve 6, so that the bio-aerosol particles are captured and sampled.

[0026] When the sampling is completed, the fan 5 is turned off, the air inlet valve 4 and the air outlet valve 6 are automatically turned off with the fan 5, the sampling membrane 2 is isolated from the outside, the pollution of the sampling membrane 2 after the sampling is completed and the influence of the sampling membrane 2 on the aerosol collected in the subsequent disinfection process can be effectively avoided, and the sampling efficiency and sampling effect of the sampling membrane 2 are ensured.

[0027] With reference to Figure 2 and Figure 3The anti-blocking cover 3 is conical, is arranged outside the air inlet valve seat 1, is used for covering the air inlet end 11, and is arranged with a gap between the air inlet valve seat 1, so that foreign matters are prevented from entering the air inlet valve seat 1, aerosols are ensured to flow into the air inlet valve seat 1 normally, and the wind resistance of the sampler is effectively reduced.

[0028] The air inlet end 11 is provided with a cross-shaped connecting frame 7 at one end close to the anti-blocking cover 3, the middle of the connecting frame 7 is provided with a connecting threaded hole 71, the inner side of the anti-blocking cover 3 is provided with a connecting threaded rod 31 along the axial direction, and the connecting threaded rod 31 is threadedly connected with the connecting threaded hole 71, so that the anti-blocking cover 3 is conveniently disassembled.

[0029] In order to further reduce the wind resistance of the sampler during air sampling with the unmanned aerial vehicle, the air inlet valve seat 1 is uniformly provided with a plurality of ribs 13 along the circumferential direction of the conical surface, the ribs 13 are arranged along the generatrix direction of the conical surface of the air inlet valve seat 1, and one end close to the anti-blocking cover 3 is arranged in a tapered arc shape, and a plurality of air holes 131 are arranged on the ribs 13 in the length direction.

[0030] The above are preferred embodiments of the application, and are not used to limit the protection scope of the application, so that: equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A bioaerosol sampler suitable for installation on the nose of a drone, comprising, an air inlet valve seat (1) arranged in a conical shape; provided with an air inlet end (11) and an air outlet end (12), and the end faces of the air inlet end (11) and the air outlet end (12) are arranged in parallel; an air inlet valve (4) is arranged inside for controlling the opening and closing of the air inlet end (11), a fan (5) is connected to the air outlet end (12), and the air inlet valve (4) is configured to automatically open when the fan (5) is working; and a sampling membrane (2) arranged inside the air inlet valve seat (1) and located between the air inlet end (11) and the air outlet end (12), and arranged parallel to the end faces of the air inlet end (11) and the air outlet end (12), configured to capture bioaerosol particles flowing through the air inlet valve seat (1); characterized in that further comprising, an anti-blocking cover (3) arranged in a conical shape, configured to cover the air inlet end (11), and arranged with a gap between the air inlet valve seat (1).

2. The bioaerosol sampler adapted for installation on a drone nosecone of claim 1, wherein: The air inlet end (11) is provided with a cross-shaped connecting bracket (7) at one end close to the anti-blocking cover (3), and a connecting threaded hole (71) is arranged in the middle of the connecting bracket (7), and a connecting threaded rod (31) is arranged inside the anti-blocking cover (3), and the connecting threaded rod (31) and the connecting threaded hole (71) are threadedly connected.

3. The bioaerosol sampler adapted for installation on a drone nosecone of claim 1, wherein: The air inlet valve seat (1) is uniformly provided with a plurality of ribs (13) along the circumferential direction of its conical surface, the ribs (13) are arranged along the generatrix direction of the conical surface of the air inlet valve seat (1), and one end close to the anti-blocking cover (3) is arranged in a tapered arc shape.

4. The bioaerosol sampler adapted for installation on a drone nosecone of claim 3, wherein: A plurality of air holes (131) are arranged on the ribs (13) along the length direction.

5. The bioaerosol sampler adapted for installation on a drone nosecone of claim 1, wherein: The air outlet end (12) of the fan (5) is provided with an exhaust valve (6), and the exhaust valve (6) is configured to automatically open when the fan (5) is working.

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