Sampling head for online pollen bioaerosol detection equipment
By designing concentric ballasts and swirling structures in the sampling head of the pollen bioaerosol detection device to form a spiral airway, the problem of wind direction influence was solved, and efficient and accurate pollen bioaerosol sampling was achieved.
Patent Information
- Application Number
- CN202520011554.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2035-01-03
AI Technical Summary
The sampling head of existing online pollen bioaerosol detection equipment is easily affected by wind direction and cannot achieve direct air sampling.
A sampling head is designed that uses multiple concentric circle-shaped louver structures and swirl structures to form a spiral airway, which uniforms the suction of the sampling head, reduces wind direction interference, and avoids the influence of airflow in different directions through the inner and outer spiral airway structures.
It enables uniform sampling under different wind directions, reduces the interference of wind direction on the sampling effect, and improves sampling efficiency and accuracy.
Smart Images
Figure CN223485610U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of pollen bioaerosol sampling technology, and more specifically, to a sampling head for use in an online pollen bioaerosol detection device. Background Technology
[0002] With the continuous changes in global climate change and ecological environment, pollen bioaerosol allergy has become an increasingly serious health problem. Therefore, accurate and efficient monitoring and sampling of pollen bioaerosols are of great significance for studying the causes of pollen bioaerosol allergy, predicting pollen bioaerosol seasons, and formulating effective preventive measures.
[0003] Pollen bioaerosols differ from other aerosols because their weight and viscosity, as well as the sampling direction and wind direction, have a significant impact on sampling efficiency. Therefore, there is an urgent need for an online pollen bioaerosol detection device sampling head that can directly sample air regardless of wind direction. Utility Model Content
[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a sampling head for an online pollen bioaerosol detection device, aiming to improve upon the problem that an existing sampling head for an online pollen bioaerosol detection device is easily affected by wind direction and cannot directly sample air.
[0005] This application discloses a sampling head for an online pollen bioaerosol detection device, comprising an outer cover, a separation cylinder embedded within the outer cover, a top irregular end face on the upper end face of the separation cylinder, and a funnel-shaped cyclone chamber on the body of the separation cylinder; a top cover plate is coaxially pressed onto the top irregular end face, an exhaust pipe is disposed at the axis of the top cover plate, the exhaust pipe is connected to the funnel-shaped cyclone chamber, a bottom irregular end face is disposed on the lower end face of the top cover plate, and multiple swirl structures and multiple galvanic structures are respectively arranged concentrically between the bottom irregular end face and the top irregular end face; a sampling tube is inserted into the exhaust pipe, and the other end of the sampling tube is connected to a suction device.
[0006] According to an embodiment of this application, a sampling head for an online pollen bioaerosol detection device has the following advantages: by using multiple concentrically arranged swirl structures and multiple vortex structures to form a spiral airway, the sampling head can uniformly absorb suction while also having the ability to adsorb on the periphery, and can reduce the interference caused by wind from different directions when the sampling head actually collects samples.
[0007] In addition, a sampling head for an online pollen bioaerosol detection device according to an embodiment of this application also has the following additional technical features:
[0008] In some specific embodiments of this application, a fixing plate is coaxially and detachably connected to the bottom end of the outer cover, and a rain cover is coaxially and detachably connected to the top end of the outer cover.
[0009] In some specific embodiments of this application, the radial cross-section of the top irregular end face is a convex shape that rises first and then falls.
[0010] In some specific embodiments of this application, the radial cross-section of the bottom irregular end face is concave in shape with an initial rise followed by a fall, and the bottom irregular end face and the top irregular end face are adapted to each other.
[0011] In some specific embodiments of this application, a plurality of the aperture structures are located outside the concentric circles and between the upper section of the top irregular end face and the bottom irregular end face.
[0012] In some specific embodiments of this application, the aperture structure is radially deflected.
[0013] In some specific embodiments of this application, a plurality of the swirling structures are located inside the concentric circles and between the lower sections of the top irregular end face and the bottom irregular end face.
[0014] In some specific embodiments of this application, the vortex structure is radially deflected, and the deflection direction of the vortex structure is consistent with the deflection direction of the ballast structure.
[0015] In some specific embodiments of this application, the bottom end of the funnel-shaped cyclone chamber is detachably connected to an ash hopper.
[0016] In some specific embodiments of this application, a dustproof net is coaxially sleeved around the top irregular end face and the bottom irregular end face. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the overall structure of a sampling head for an online pollen bioaerosol detection device according to an embodiment of this application;
[0019] Figure 2 This is a cross-sectional structural diagram of a sampling head for an online pollen bioaerosol detection device according to an embodiment of this application;
[0020] Figure 3This is an exploded view of the structure of a sampling head for an online pollen bioaerosol detection device, based on an embodiment of this application;
[0021] Figure 4 This is a partial exploded view of the sampling head of an online pollen bioaerosol detection device according to an embodiment of this application;
[0022] Figure 5 This is a partial structural schematic diagram of the separator and the top cover plate according to an embodiment of this application.
[0023] Icons: 1. Outer cover; 11. Fixing plate; 12. Rain cover; 2. Separation cylinder; 21. Top side irregular end face; 22. Funnel-shaped cyclone chamber; 23. Auction structure; 24. Swirl structure; 3. Top cover plate; 31. Exhaust pipe; 32. Bottom side irregular end face; 4. Sampling tube; 5. Ash hopper; 6. Dustproof net. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0025] like Figure 1-Figure 5 As shown, a sampling head for an online pollen bioaerosol detection device according to an embodiment of this application includes an outer cover 1, wherein a separation cylinder 2 is embedded in the outer cover 1. Specifically, a threaded connection can be used in conjunction with a sealing ring to achieve a sealed connection. The upper end face of the separation cylinder 2 is provided with a top side irregular end face 21, and the cylinder body of the separation cylinder 2 is provided with a funnel-shaped cyclone chamber 22.
[0026] like Figures 2-5 As shown, a top cover plate 3 is coaxially pressed onto the top irregular end face 21. An exhaust pipe 31 is provided at the axis of the top cover plate 3. The exhaust pipe 31 is connected to the funnel-shaped cyclone chamber 22. A bottom irregular end face 32 is provided on the lower end face of the top cover plate 3. Multiple balustrade structures 23 and multiple swirl structures 24 are respectively provided in a concentric circle between the bottom irregular end face 32 and the top irregular end face 21.
[0027] The exhaust pipe 31 is fitted with a sampling pipe 4, and the other end of the sampling pipe 4 is connected to a suction device.
[0028] like Figure 1As shown, a fixing plate 11 is detachably connected to the bottom of the outer cover 1 on the same axis. The fixing plate 11 is detachably connected to the pollen bioaerosol detection device. A rain cover 12 is detachably connected to the top of the outer cover 1 on the same axis to prevent rainwater from entering the sampling head.
[0029] Specifically, such as Figure 2 and Figure 4 As shown, the radial cross section of the top irregular end face 21 is convex with an upward curve followed by a downward curve, and the radial cross section of the bottom irregular end face 32 is concave with an upward curve followed by a downward curve. The bottom irregular end face 32 and the top irregular end face 21 are compatible.
[0030] Among them, such as Figures 2-5 As shown, multiple louver structures 23 are located outside the concentric circles and between the top irregular end face 21 and the bottom irregular end face 32. It can be understood that the flow channel formed between the multiple louver structures 23 is gradually uphill.
[0031] Specifically, the louver structure 23 is radially deflected to tilt the formed flow channel, and the incoming airflow rotates under the action of multiple tilted flow channels.
[0032] Multiple swirling structures 24 are located inside the concentric circle and between the top irregular end face 21 and the bottom irregular end face 32. It can be understood that the flow channel formed between the multiple swirling structures 24 is gradually sloping down.
[0033] The swirl structure 24 is radially deflected, and the deflection direction of the swirl structure 24 is the same as the deflection direction of the ballast structure 23.
[0034] Therefore, it is understandable that, Figure 5 As shown, a two-layer spiral airway is formed between the separator 2 and the upper cover plate 3. The outer layer is uphill and the inner layer is downhill. Therefore, when the sampling tube 4 generates suction, it will also generate suction within the spiral airway, causing the separator 2 and the upper cover plate 3 to circumferentially adsorb the surrounding air. Air entering the spiral airway first passes through multiple louver structures 23. Because of the uphill slope, large particles can be prevented from entering the funnel-shaped cyclone chamber 22 with the airflow. The airflow initially rotates as it passes through the uphill spiral airway before entering the cyclone chamber 22. The spiral air passage with its downward slope further intensifies the rotation, and the rotating air rushes into the funnel-shaped cyclone chamber 22. As the inner diameter of the funnel-shaped cyclone chamber 22 gradually decreases, the velocity of the rotating airflow increases, and the pressure of the airflow increases. The squeezed fluid moves upward along the central normal of the funnel-shaped cyclone chamber 22. Due to the centrifugal force, large particles of impurities in the airflow will run along the wall of the funnel-shaped cyclone chamber 22 and fall downward. Small particles of aerosol in the airflow will be sampled by the sampling tube 4 along with the rising airflow and sent to the pollen bioaerosol detection device, thus completing the sampling action.
[0035] It should be noted that the inner and outer spiral air channels in the embodiments of this application enable the sampling head to have circumferential sampling capability, while avoiding interference from airflow in different directions.
[0036] Furthermore, the bottom end of the funnel-shaped cyclone chamber 22 is detachably connected to an ash hopper 5 to facilitate the collection of large particulate impurities in the airflow.
[0037] Furthermore, a dustproof net 6 is coaxially sleeved on the periphery of the top irregular end face 21 and the bottom irregular end face 32, which can further filter the airflow adsorbed during the sampling process to prevent impurities from being adsorbed into the spiral airway and causing airway blockage, thus affecting the sampling work.
[0038] It should be noted that the specific models and specifications of the rain cover 12, ash hopper 5 and dust net 6 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.
[0039] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.
Claims
1. A sampling head for an online pollen bioaerosol detection device, comprising an outer cover (1), characterized in that: The outer cover (1) is fitted with a separation cylinder (2), the upper end face of the separation cylinder (2) is provided with a top side irregular end face (21), and the body of the separation cylinder (2) is provided with a funnel-shaped cyclone chamber (22). A top cover plate (3) is coaxially pressed onto the top irregular end face (21). An exhaust pipe (31) is provided at the axis of the top cover plate (3). The exhaust pipe (31) is connected to the funnel-shaped cyclone chamber (22). A bottom irregular end face (32) is provided on the lower end face of the top cover plate (3). Multiple balustrade structures (23) and multiple swirl structures (24) are respectively provided in concentric circles between the bottom irregular end face (32) and the top irregular end face (21). A sampling tube (4) is inserted into the exhaust pipe (31), and the other end of the sampling tube (4) is connected to a suction device.
2. The sampling head for an online pollen bioaerosol detection device as described in claim 1, characterized in that, The bottom end of the outer cover (1) is coaxially and detachably connected to a fixing plate (11), and the top end of the outer cover (1) is coaxially and detachably connected to a rain cover (12).
3. The sampling head for an online pollen bioaerosol detection device as described in claim 1, characterized in that, The radial cross section of the top irregular end face (21) is convex in the shape of first rising and then falling.
4. The sampling head for an online pollen bioaerosol detection device as described in claim 1, characterized in that, The radial cross section of the bottom irregular end face (32) is concave with an upward and downward curve, and the bottom irregular end face (32) and the top irregular end face (21) are adapted to each other.
5. The sampling head for an online pollen bioaerosol detection device as described in claim 1, characterized in that, Multiple of the aforementioned balconies (23) are located outside the concentric circles and between the upper sections of the top irregular end face (21) and the bottom irregular end face (32).
6. The sampling head for an online pollen bioaerosol detection device as described in claim 1, characterized in that, The faucet structure (23) is radially deflected.
7. The sampling head for an online pollen bioaerosol detection device as described in claim 1, characterized in that, Multiple swirling structures (24) are located inside the concentric circles and between the lower sections of the top irregular end face (21) and the bottom irregular end face (32).
8. The sampling head for an online pollen bioaerosol detection device as described in claim 1, characterized in that, The swirling structure (24) is radially deflected, and the deflection direction of the swirling structure (24) is consistent with the deflection direction of the ballast structure (23).
9. The sampling head for an online pollen bioaerosol detection device as described in claim 1, characterized in that, The bottom end of the funnel-shaped cyclone chamber (22) is detachably connected to an ash hopper (5).
10. The sampling head for an online pollen bioaerosol detection device as described in claim 1, characterized in that, Dustproof nets (6) are coaxially sleeved around the top irregular end face (21) and the bottom irregular end face (32).