Airborne biological aerosol sampler of unmanned aerial vehicle

Abstract

The utility model relates to an unmanned aerial vehicle airborne biological aerosol sampler, and relates to the technical field of aerosol sampling devices, the unmanned aerial vehicle airborne biological aerosol sampler comprises an air inlet valve seat, an air inlet channel is arranged in the air inlet valve seat, the air inlet end of the air inlet channel is connected with an air inlet valve, the air inlet valve is used for controlling communication of the air inlet channel, and the air outlet end is connected with a fan; the air inlet valve is configured to be automatically opened when the fan works; the fan fixing seat is arranged between the air inlet valve seat and the fan, is used for bearing the fan and is detachably connected with the air inlet valve seat; the filter membrane is arranged on the side, away from the draught fan, of the draught fan fixing base and located in the air inlet channel. The sampler capable of controlling the opening and closing of the air inlet valve through the fan is arranged, so that the contact and separation control of the filter membrane and the external environment is realized, the pollution of the filter membrane after the sampling is finished is avoided, the influence on the filter membrane when the shell is disinfected is also avoided, and the collection efficiency and the collection effect of the sampler are effectively ensured.

Description

Technical Field

[0001] This application relates to the field of aerosol sampling devices, and in particular to a bio-aerosol sampling device carried by a drone. Background Art

[0002] The biological, physical, and chemical properties of bio-aerosols have a very important impact on respiratory infections. The inherent characteristics of microorganisms contained in aerosols, namely the infectivity and virulence of microorganisms, are decisive factors for the consequences of respiratory infections. The difference in the infection doses of bio-aerosols of different species and strains can reach several orders of magnitude under similar conditions. Collecting and studying bio-aerosols to understand the property characteristics of different types of bio-aerosols can provide a research basis for the development of related drugs.

[0003] After the sampling of the drone-mounted bio-aerosol sampler is completed, in order to prevent the bio-aerosols carried on the outer shell of the drone-mounted bio-aerosol sampler from polluting the experimental personnel or the environment, it is necessary to disinfect the outer shell of the drone-mounted bio-aerosol sampler after sampling;

[0004] However, when disinfecting the outer shell of the existing form of drone-mounted bio-aerosol sampler, some of the collected bio-aerosols may also be disinfected together, which will inevitably affect the sampling efficiency and sampling effect of the sampler and needs to be improved. Utility Model Content

[0005] In view of the above problems, this application is proposed to provide a drone-mounted bio-aerosol sampler that overcomes the above problems or at least partially solves the above problems.

[0006] A drone-mounted bio-aerosol sampler provided by this application adopts the following technical solutions:

[0007] A drone-mounted bio-aerosol sampler includes:

[0008] An intake valve seat with an intake channel inside. The intake end of the intake channel is connected to an intake valve, and the intake valve is used to control the connection of the intake channel. The outlet end is connected to a fan, and the intake valve is configured to automatically open when the fan is working;

[0009] A fan fixing seat is arranged between the intake valve seat and the fan, used to carry the fan, and is detachably connected to the intake valve seat;

[0010] A filter membrane is arranged on the side of the fan fixing seat facing away from the fan and is located inside the intake channel.

[0011] Optionally, the intake valve includes:

[0012] The valve body is internally provided with a valve passage, and the air inlet end of the valve passage is conically arranged;

[0013] The valve stem is arranged in the valve passage and can slide along the valve passage;

[0014] The spring is arranged in the valve body and sleeved on the valve stem, and is used to drive the valve stem to slide towards the air inlet end of the valve passage to realize the closing of the valve passage.

[0015] Optionally, a support frame is arranged at the air outlet end of the valve passage, and the support frame is used to carry the spring.

[0016] Optionally, the intake valve and the intake valve seat are connected by insertion.

[0017] Optionally, L-shaped rotating grooves are arranged at both ends inside the fan fixing seat, and clamping columns for rotationally sliding and clamping are arranged on both sides outside the intake valve seat for embedding in the rotating grooves.

[0018] Optionally, support spokes for carrying the filter membrane are arranged inside the fan fixing seat.

[0019] Optionally, the intake valve seat is conically arranged.

[0020] Optionally, a plurality of threaded seats are evenly arranged along the circumferential direction on the outside of the fan fixing seat.

[0021] In summary, the present application includes the following beneficial technical effects: By setting a sampler that can control the opening and closing of the intake valve through a fan, the contact and separation control between the filter membrane and the external environment are realized, that is, the pollution of the filter membrane after sampling is avoided, and the influence on the filter membrane during the disinfection of the outer shell is also avoided, effectively ensuring the collection efficiency and collection effect of the sampler; By setting a fan fixing seat and an intake valve seat that can be quickly disassembled and assembled, the convenient disassembly and assembly of the filter membrane are realized; By setting a conical intake valve seat, it is beneficial to reduce the resistance during the flight of the drone. Description of the Drawings

[0022] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0023] Figure 2 is the schematic diagram of the connection relationship among the intake valve seat, the fan fixing seat and the filter membrane in the embodiment of the present application;

[0024] Figure 3 is in the embodiment of the present application Figure 2 The enlarged schematic diagram of part A;

[0025] Figure 4 is the overall structural schematic diagram of the intake valve in the embodiment of the present application;

[0026] Figure 5 This is a schematic structural diagram of the fan fixing base in the embodiment of the present application;

[0027] Explanation of reference numerals: 1, intake valve seat; 11, intake channel; 12, clamping post; 2, intake valve; 21, valve body; 211, valve passage; 22, valve stem; 23, spring; 3, fan; 4, fan fixing base; 41, rotating groove; 42, threaded seat; 5, filter membrane; 6, support frame; 7, support spoke. Detailed implementation manners

[0028] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Apparently, the described embodiments are only one embodiment of the present invention, rather than all embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the ordinary meanings understood by those of ordinary skill in the art to which the present invention belongs.

[0030] This embodiment provides an airborne bioaerosol sampler for unmanned aerial vehicles,

[0031] Referring to Figure 1 and Figure 2 , an airborne bioaerosol sampler for unmanned aerial vehicles includes an intake valve seat 1, a fan fixing base 4 and a filter membrane 5.

[0032] Referring to Figure 1 and Figure 2 , the intake valve seat 1 is provided in a conical shape to reduce the flight resistance of the unmanned aerial vehicle during flight. An intake channel 11 is provided inside the intake valve seat 1. An intake valve 2 is provided at the intake end of the intake channel 11, a fan 3 is provided at the outlet end, and the fan 3 is connected to the intake valve seat 1 through the fan fixing base 4.

[0033] Referring to Figure 2 , Figure 3 and Figure 4 , the intake valve 2 includes a valve body 21, a valve stem 22 and a spring 23. A valve passage 211 is provided inside the valve body 21. The valve passage 211 is provided in a conical shape. The valve stem 22 is arranged in the valve passage 211 and can make a sliding movement along its length direction. A plug for blocking the intake end of the valve passage 211 is provided on the valve stem 22. The spring 23 is sleeved on the valve stem 22. A support frame 6 for bearing the spring 23 is provided at the outlet end of the valve passage 211. The spring 23 is used to drive the valve stem 22 to move towards the intake end of the valve passage 211, so as to realize the closing control of the intake end of the valve passage 211 through the plug of the valve stem 22.

[0034] When the sampler samples in the air with the drone, when the fan 3 starts, it overcomes the elastic force of the spring 23 of the intake valve 2, the intake valve 2 opens, and the air is trapped by the filter membrane 5 after passing through the intake valve 2, realizing the sampling of aerosols.

[0035] After the sampling is completed, the fan 3 is turned off, and the intake valve 2 automatically closes as the fan 3 closes. The filter membrane 5 is isolated from the outside world, which can effectively avoid the contamination of the filter membrane 5 after the sampling is completed and the influence on the aerosols collected by the filter membrane 5 during the subsequent disinfection process, ensuring the sampling efficiency and sampling effect of the filter membrane 5.

[0036] Refer to Figure 2 and Figure 3 In order to achieve the convenient disassembly and replacement of the intake valve 2, the intake valve 2 and the intake valve seat 1 are connected by a plug-in connection method. At the same time, in order to ensure the connection tightness between the intake valve 2 and the intake valve seat 1, as well as the connection tightness between the valve body 21 and the valve stem 22, sealing rings are sleeved on both the valve body 21 and the plug of the valve stem 22.

[0037] Refer to Figure 2 and Figure 5 Refer to

[0038] After the drone returns to the ground, the overall outer shell can be disinfected, which will not affect the samples already collected on the filter membrane 5, and by rotating the intake valve seat 1, the filter membrane 5 can be removed for subsequent analysis.

[0039] Refer to Figure 5 Refer to

[0040] Refer to Figure 2 In order to ensure the connection tightness between the filter membrane 5 and the fan fixing seat 4, as well as the connection tightness between the fan fixing seat 4 and the intake valve seat 1, and thus ensure the sealing performance of the outlet end of the intake valve seat 1, sealing rings are provided on the inner side of the fan fixing seat 4 and the outer side of the outlet end of the intake valve seat 1.

[0041] Refer to Figure 5 In order to realize the connection and fixation between the sampler and the drone body, a plurality of threaded seats 42 are evenly arranged along the circumferential direction on the outer side of the fan fixing seat 4 to connect the sampler to the drone body through screws.

[0042] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An airborne bioaerosol sampler for unmanned aerial vehicles, characterized in that: include, An air intake valve seat (1) is provided with an air intake passage (11) therein, an air intake end of the air intake passage (11) is connected to an air intake valve (2), the air intake valve (2) is used to control the communication of the air intake passage (11), an air outlet end is connected to a fan (3), and the air intake valve (2) is configured to automatically open when the fan (3) is in operation; A fan fixing seat (4) is arranged between the air intake valve seat (1) and the fan (3), is used to support the fan (3), and is detachably connected to the air intake valve seat (1); The filter membrane (5) is arranged on a side of the fan fixing seat (4) facing away from the fan (3) and is located in the air inlet channel (11).

2. The airborne bioaerosol sampler for unmanned aerial vehicle according to claim 1, wherein: The air intake valve (2) comprises: The valve body (21) is provided with a valve channel (211) therein, and the air inlet end of the valve channel (211) is tapered; A valve stem (22) is disposed in the valve channel (211) and is capable of sliding along the valve channel (211); A spring (23) is arranged in the valve body (21) and sleeved on the valve stem (22), and is used to drive the valve stem (22) to slide toward the air inlet end of the valve channel (211) to achieve the closure of the valve channel (211).

3. The airborne bioaerosol sampler for unmanned aerial vehicle according to claim 2, characterized in that: A support frame (6) is provided at the air outlet end of the valve channel (211), and the support frame (6) is used to support the spring (23).

4. The airborne bioaerosol sampler for unmanned aerial vehicle according to claim 1, wherein The air intake valve (2) and the air intake valve seat (1) are plug-connected.

5. The airborne bioaerosol sampler for unmanned aerial vehicle according to claim 1, characterized in that: L-shaped rotation grooves (41) are provided at both ends of the inner side of the fan fixing seat (4), and clamping columns (12) for being embedded in the rotation grooves (41) and rotating and slidingly clamped are provided on both sides of the outer side of the air intake valve seat (1).

6. The airborne bioaerosol sampler for unmanned aerial vehicle according to claim 1, characterized in that: Support spokes (7) for supporting the filter membrane (5) are provided on the inner side of the fan fixing seat (4).

7. The airborne bioaerosol sampler for unmanned aerial vehicle according to claim 1, characterized in that: The intake valve seat (1) is arranged in a conical shape.

8. The airborne bioaerosol sampler for unmanned aerial vehicle according to claim 1, characterized in that: A plurality of threaded seats (42) are evenly arranged on the outer side of the fan fixing seat (4) along its circumferential direction.

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