A biological aerosol sampler

Abstract

The utility model relates to the technical field of sampling and preparation test sample, disclose a kind of biological aerosol sampler, including main body shell, the right side of the main body shell is fixedly connected with collection chamber, the bottom of the collection chamber is fixedly connected with sliding slot, the outer wall sliding connection of the sliding slot has sampling assembly, the sampling assembly includes slide buckle, suction conduit, the inner wall of the suction conduit is fixedly connected with limit ring two, the inner wall of the suction conduit is fixedly connected with four connecting columns two, the other end of four connecting columns two is fixedly connected with limit ring three, the inner wall sliding connection of the suction conduit has pedestal. In the utility model, the sample in sampling cup is sucked into collection chamber by pump in top collection chamber, midway makes the suction conduit in sample liquid and then pushes pedestal to move upward, while spring contracts, when sample liquid is sucked, spring restores initial state and makes pedestal to press down, to realize the effect of blocking sample liquid backflow.

Description

Technical Field

[0001] This utility model relates to the field of sampling and preparation of test samples, and in particular to a bioaerosol sampler. Background Technology

[0002] A bioaerosol sampler is a device specifically designed to collect airborne biological particles such as bacteria, viruses, fungal spores, and pollen. These biological particles may carry pathogens and pose a potential threat to human health and environmental safety. Therefore, bioaerosol samplers have wide applications in environmental monitoring, public health, and biosafety.

[0003] In existing technologies, some bioaerosol samplers operate on two principles. One method utilizes the inertia of airborne particles to deviate from the airflow direction and impact the collection surface inside the sampler. This type of sampler is suitable for collecting larger bioaerosol particles. The other method uses filter media such as filter membranes or filter paper to trap airborne particles on the filter membrane. This method is suitable for collecting bioparticles of various sizes.

[0004] However, in existing technologies, the sample liquid in the sampling cup of some bioaerosol samplers is affected by the ambient temperature during sampling, which interferes with the detection results. Therefore, a bioaerosol sampler is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a bioaerosol sampler, which aims to improve the problem that the sample liquid is easily affected by the ambient temperature during detection in some existing bioaerosol samplers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a bioaerosol sampler, comprising a main body shell, a collection chamber fixedly connected to the right side of the main body shell, a chute fixedly connected to the bottom of the collection chamber, a sampling assembly slidably connected to the outer wall of the chute, the sampling assembly comprising a sliding buckle and a suction conduit, a limiting ring two fixedly connected to the inner wall of the suction conduit, four connecting posts two fixedly connected to the inner wall of the suction conduit, a limiting ring three fixedly connected to the other end of the four connecting posts two, a base slidably connected to the inner wall of the suction conduit, a spring fixedly connected to the top of the base, and a sliding post slidably connected to the outer wall of the spring;

[0007] As a further description of the above technical solution: a control panel is installed on the front side of the main body shell, and multiple ventilation holes are opened on the front side of the main body shell, with filters installed in the ventilation holes;

[0008] As a further description of the above technical solution: a connecting post is fixedly connected to the bottom of the sliding buckle, and the inner wall of the connecting post is slidably connected to the outer wall of the suction conduit.

[0009] As a further description of the above technical solution: the outer wall of the connecting column one is fixedly connected with three injection ports, the bottom of the connecting column one is fixedly connected with a connection port, the inner wall of the connection port is threaded with a cup mouth, and the outer wall of the cup mouth is fixedly connected with a limit ring one.

[0010] As a further description of the above technical solution: a sampling cup is fixedly connected to the bottom of the limiting ring, a base is fixedly connected to the bottom of the sampling cup, and the bottom of the base is designed with anti-slip pads and internal counterweight treatment.

[0011] As a further description of the above technical solution: the top of the suction catheter is fixedly connected to the bottom of the collection chamber, and the sliding column is slidably connected to the outer wall of the limiting ring three;

[0012] As a further description of the above technical solution: the outer wall of the sampling cup is fixedly connected to a heat insulation layer, the outer wall of the heat insulation layer is fixedly connected to a heat insulation layer, and the outer wall of the heat insulation layer is fixedly connected to a waterproof layer.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the sample in the sampling cup is drawn into the collection chamber by the pump in the top collection chamber. During the process, the sample liquid in the suction tube moves upward, which pushes the base upward. At the same time, the spring contracts and moves vertically under the action of the limiting ring. After the sample liquid is drawn, the spring returns to the initial state, which causes the base to press down, thereby achieving the effect of preventing the sample liquid from flowing back.

[0015] 2. In this utility model, by attaching a heat insulation layer to the outer wall of the sampling cup, and then setting a heat insulation layer on the outer wall of the heat insulation layer, most of the heat exchange between the inside and outside is isolated. A waterproof layer is then designed on the outside of the heat insulation layer, thereby ensuring that the temperature of the sample liquid is not affected by the environment when sampling again. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of a bioaerosol sampler proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the chute structure of a bioaerosol sampler proposed in this utility model;

[0018] Figure 3 This is a schematic diagram of the sampling cup of a bioaerosol sampler proposed in this utility model;

[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0020] Figure 5 This is a schematic diagram of the structure of the insulation layer of a bioaerosol sampler proposed in this utility model;

[0021] Figure 6 This is a schematic diagram of the sampling cup of a bioaerosol sampler proposed in this utility model.

[0022] Figure 7 This is a schematic diagram of the connection port of a bioaerosol sampler proposed in this utility model.

[0023] Legend:

[0024] 1. Main body shell; 2. Collection chamber; 3. Vent hole; 4. Control panel; 5. Slide groove; 6. Sliding buckle; 7. Connecting column one; 8. Sample inlet; 9. Connection port; 10. Limiting ring one; 11. Sampling cup; 12. Base; 13. Aspiration tube; 14. Limiting ring two; 15. Connecting column two; 16. Limiting ring three; 17. Spring; 18. Base; 19. Sliding column; 20. Insulation layer; 21. Heat insulation layer; 22. Waterproof layer. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 1 , Figure 2 , Figure 4This utility model provides an embodiment of a bioaerosol sampler, comprising a main shell 1 made of high-strength, corrosion-resistant engineering plastic. This material not only effectively protects internal components but also provides lightweight portability and ease of installation. A collection chamber 2 is fixedly connected to the right side of the main shell 1. Its good chemical stability ensures that it will not react chemically with the bioaerosol sample during the detection process, thus not affecting the detection results. A sliding groove 5 is fixedly connected to the bottom of the collection chamber 2. The surface of the groove 5 is finely polished, providing good wear resistance and smoothness, reducing friction during sliding. A sampling component is slidably connected to the outer wall of the sliding groove 5. The sampling component includes a sliding buckle 6 and a suction tube 13. The shape of the sliding buckle 6 perfectly matches the sliding groove 5 and is tightly connected to the sliding groove 5 through a special snap-fit ​​structure, ensuring stable sliding of the sampling component on the sliding groove 5. The suction tube 13 can adapt to different sampling environments during the sampling process. A limiting ring 14 is fixedly connected to the inner wall of the suction conduit 13. The surface of the ring is polished. Its function is to limit the maximum downward position of the sliding column 19 and prevent the sliding column 19 from moving too far downward and damaging other internal components of the suction conduit 13. Four connecting columns 15 are also fixedly connected to the inner wall of the suction conduit 13. The four connecting columns 15 are distributed on the inner wall of the suction conduit 13. The other end of each connecting column 15 is fixedly connected to a limiting ring 16, which cooperates with the limiting ring 14 to further limit the range of motion of the sliding column 19 and ensure that the sliding column 19 moves stably within the specified stroke. A base 18 is slidably connected to the inner wall of the suction conduit 13. A spring 17 is fixedly connected to the top of the base 18 to provide stable elastic support for the sliding column 19. The outer wall of the spring 17 is slidably connected to the sliding column 19. The top of the sliding column 19 is designed with a conical structure to facilitate better aspiration of bioaerosol samples during the sampling process. Its bottom cooperates with the base 18 and slides up and down under the action of the spring 17, thereby completing the bioaerosol sampling process.

[0027] Reference Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7The bioaerosol sampler of this embodiment includes a main shell 1. A control panel 4 is installed on the front of the main shell 1, which clearly displays various operating parameters of the sampler, such as sampling time and flow rate, allowing operators to monitor the sampler's working status in real time. Multiple ventilation holes 3 are evenly distributed on the front of the main shell 1 to ensure smooth airflow inside the sampler. Filters are installed at the ventilation holes 3 to effectively prevent dust from entering the sampler and affecting the accuracy of sampling and detection. A sliding groove 5 is fixedly connected to the bottom of the collection chamber 2. A sampling component is slidably connected to the outer wall of the sliding groove 5. The sampling component includes a sliding buckle 6, and a connecting post 7 is fixedly connected to the bottom of the sliding buckle 6. The inner wall of the connecting column 7 is slidably connected to the outer wall of the suction tube 13. Three sample inlets 8 are fixedly connected to the outer wall of the connecting column 7. A connecting port 9 is fixedly connected to the bottom of the connecting column 7. A cup opening is threaded onto the inner wall of the connecting port 9. A limiting ring 10 is fixedly connected to the outer wall of the cup opening. This threaded connection allows for easy installation and removal of the cup opening, facilitating the replacement of the sampling cup 11. The limiting ring 10 restricts the installation position of the sampling cup 11, ensuring that the sampling cup 11 can be accurately and stably installed on the connecting port 9. The bottom of the limiting ring 10 is fixedly connected to the sampling cup 11. The sampling cup 11 is made of high-strength, lightweight material and features a spiral or centrifugal airflow channel internally, matched to the flow rate setting. It features seven flow rate settings, allowing selection of the required flow rate for different liquids. A liquid level scale allows for precise control of the liquid volume. It also incorporates an anti-overflow function to prevent liquid splashing during sample introduction and affecting sampling results. The sampling cup 11 is designed for single use to prevent secondary contamination. The entire sampling cup is modularly designed, with a separate cup body and lid to prevent cross-contamination. A base 12 is fixedly connected to the bottom of the sampling cup 11, featuring anti-slip feet to ensure stability during placement. The base 12 has internal counterweights to increase the weight of the sampling cup 11, further enhancing its stability. The suction tube 13... The top of the sampling cup 11 is fixedly connected to the bottom of the collection chamber 2. The outer wall of the sampling cup 11 is fixedly connected to an insulation layer 20, which is made of polyurethane foam material and has good heat insulation performance. It can effectively reduce the heat exchange between the sample inside the sampling cup 11 and the external environment, maintain the temperature stability of the sample, and prevent the properties of the sample and the test results from being affected by temperature changes. The outer wall of the insulation layer 20 is fixedly connected to a heat insulation layer 21, which is made of glass fiber material and can further prevent heat transfer and improve the heat insulation effect. The outer wall of the heat insulation layer 21 is fixedly connected to a waterproof layer 22, which is made of polyvinyl chloride material and has good waterproof performance. It can prevent water from entering the sampling cup 11 and protect the sample from contamination.

[0028] Working Principle: During the sampling preparation stage, the main shell 1 serves as a solid support frame for the entire sampler. The control panel 4 installed on its front provides a convenient operating interface for the user, allowing easy input of operating commands and setting of various parameters to ensure the sampler operates accurately according to actual needs. Multiple ventilation holes 3 on the front ensure smooth airflow inside the sampler, and the built-in filters in the ventilation holes 3 effectively filter larger particulate impurities in the air, preventing these impurities from entering the sampler and interfering with normal operation, thus extending the equipment's lifespan. The collection chamber 2 is fixed to the right side of the main shell 1, and its bottom groove 5 provides a track for the installation and sliding of the sampling component. A sliding buckle 6 is fixedly connected to a connecting post 7 at its bottom. The inner wall of the connecting post 7 is slidably connected to the suction conduit 13. Through the cooperation of the sliding buckle 6 and the groove 5, the sampling component can move along the groove 5 to a suitable sampling position. The inner wall of the connecting port 9 fixedly connected to the bottom of the connecting post 7 is threaded to the mouth of the sampling cup 11. The sampling cup 11 is connected to the base 12, which is fixed to the bottom of the sampling cup 11. The base 12 is treated with anti-slip and counterweight to effectively prevent the sampling cup 11 from shaking or tipping over during the sampling process, ensuring the smooth progress of the sampling work. The heat insulation layer 20, heat insulation layer 21, and waterproof layer 22, which are fixed to the outer wall of the sampling cup 11 in sequence, play important roles. The heat insulation layer 20 can keep the temperature inside the sampling cup 11 relatively stable and avoid temperature changes from affecting the sample. The heat insulation layer 21 prevents external heat from entering the sampling cup 11 and further protects the sample. The waterproof layer 22 can effectively prevent moisture from entering the sampling cup 11 and contaminating the sample, ensuring the integrity and accuracy of the sample. In the sample collection stage, the sampling method is wet-wall cyclone technology. After the sampler is started, it actively captures the bioaerosol components in the air around the device. Driven by the high-speed airflow, the components are captured in the special aerosol sampling liquid. The air sample enters through the air inlet 8 set in the sampling cup and mixes with the sampling liquid. The pump in collection chamber 2 starts, generating negative pressure to quickly draw the sample from sampling cup 11 into collection chamber 2. During sample aspiration, the sample liquid moves upward along the aspiration conduit 13, pushing the base 18, which is slidably connected inside the aspiration conduit 13, to move upward. At this time, the spring 17 fixed at the top of the base 18 contracts, and the base 18 moves vertically under the limiting action of the second limiting ring 14 and the third limiting ring 16. When the sample liquid is completely aspirated, the spring 17 loses its external force and returns to its initial state, pushing the base 18 downward. After the base 18 is pressed down, it can effectively prevent the sample liquid from flowing back and prevent the collected sample from being contaminated.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bioaerosol sampler, comprising a main body shell (1), characterized in that: A collection chamber (2) is fixedly connected to the right side of the main body shell (1). A slide groove (5) is fixedly connected to the bottom of the collection chamber (2). A sampling component is slidably connected to the outer wall of the slide groove (5). The sampling component includes a sliding buckle (6) and a suction conduit (13). A limit ring two (14) is fixedly connected to the inner wall of the suction conduit (13). Four connecting posts two (15) are fixedly connected to the inner wall of the suction conduit (13). A limit ring three (16) is fixedly connected to the other end of the four connecting posts two (15). A base (18) is slidably connected to the inner wall of the suction conduit (13). A spring (17) is fixedly connected to the top of the base (18). A sliding post (19) is slidably connected to the outer wall of the spring (17).

2. The bioaerosol sampler according to claim 1, characterized in that: The main body shell (1) is equipped with a control panel (4) on the front side, and the main body shell (1) has multiple ventilation holes (3) on the front side, and the ventilation holes (3) are equipped with filters.

3. A bioaerosol sampler according to claim 1, characterized in that: The bottom of the sliding buckle (6) is fixedly connected to a connecting post (7), and the inner wall of the connecting post (7) is slidably connected to the outer wall of the suction conduit (13).

4. A bioaerosol sampler according to claim 3, characterized in that: The outer wall of the connecting column (7) is fixedly connected to three injection ports (8), the bottom of the connecting column (7) is fixedly connected to a connecting port (9), the inner wall of the connecting port (9) is threadedly connected to a cup mouth, and the outer wall of the cup mouth is fixedly connected to a limiting ring (10).

5. A bioaerosol sampler according to claim 4, characterized in that: The bottom of the limiting ring (10) is fixedly connected to a sampling cup (11), and the bottom of the sampling cup (11) is fixedly connected to a base (12). The bottom of the base (12) is designed with anti-slip pads and internal counterweight treatment.

6. A bioaerosol sampler according to claim 1, characterized in that: The top of the suction conduit (13) is fixedly connected to the bottom of the collection chamber (2), and the sliding column (19) is slidably connected to the outer wall of the limiting ring (16).

7. A bioaerosol sampler according to claim 5, characterized in that: The outer wall of the sampling cup (11) is fixedly connected to a heat insulation layer (20), the outer wall of the heat insulation layer (20) is fixedly connected to a heat insulation layer (21), and the outer wall of the heat insulation layer (21) is fixedly connected to a waterproof layer (22).

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