Aerosol enrichment device

Abstract

The utility model discloses an aerosol enrichment device, which relates to the technical field of environmental monitoring, and comprises a shell structure, an upper shell, a support frame fixed on the lower surface of the upper shell, and an air inlet cylinder fixed on the surface of the support frame, the infusion structure comprises a peristaltic pump fixed to the surface of the upper shell, a liquid inlet connector fixed to the side face of the peristaltic pump, a liquid outlet connector fixed to one side of the liquid inlet connector, a liquid inlet assembly fixed to the surface of the liquid inlet connector and a liquid outlet assembly fixed to the liquid outlet connector. According to the utility model, real-time monitoring and dynamic supplement of the liquid amount in the sampling cup are realized, the problem of insufficient sampling liquid amount caused by liquid volatilization is thoroughly avoided, and reliable guarantee is provided for long-time and high-efficiency collection of aerosol.

Description

Technical Field

[0001] This utility model relates to the field of environmental monitoring technology, specifically to an aerosol enrichment device. Background Technology

[0002] An aerosol enrichment device is a device used to continuously collect aerosols into a liquid over a long period of time.

[0003] To analyze the composition of aerosols in the air, it is usually necessary to collect aerosols into a liquid. Then, by analyzing the aerosol components in the sample liquid, the composition of aerosols in the air can be inferred. For environments with low aerosol concentrations, it is necessary to enrich the environmental aerosols for a long time to increase the concentration of the sample liquid. During the sampling process, aerosol particles in the air are captured and concentrated by the enrichment medium. When the sampling time reaches a preset value or the sample liquid reaches the required concentration, sampling is stopped. Finally, the enriched sample liquid or medium is transferred to the analytical device for subsequent detection or analysis.

[0004] However, liquid sampling devices suffer from liquid evaporation when collecting aerosols, resulting in limited sampling time, typically lasting only tens of minutes to a few hours. The volume of sampled liquid decreases over time, affecting sampling efficiency. Due to variations in temperature and humidity, the evaporation rate of the sampled liquid in the sampling cup is difficult to determine, making it difficult to set the initial volume of sampled liquid. Excessive sampled liquid will reduce the sample concentration, hindering detection and affecting subsequent analysis. Utility Model Content

[0005] The purpose of this invention is to provide an aerosol enrichment device to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an aerosol enrichment device, comprising,

[0007] The shell structure includes an upper shell, a support frame fixed to the lower surface of the upper shell, and an air inlet fixed to the surface of the support frame;

[0008] The infusion structure includes a peristaltic pump fixed to the surface of the upper housing, an inlet connector fixed to the side of the peristaltic pump, an outlet connector fixed to one side of the inlet connector, an inlet assembly fixed to the surface of the inlet connector, and an outlet assembly fixed to the outlet connector.

[0009] The fixed structure includes a fixed base fixed to the surface of the air inlet cylinder, and a positioning component fixed to the surface of the fixed base, wherein the positioning component is located at one end of the liquid outlet component.

[0010] In a preferred embodiment of the aerosol enrichment device of this utility model, a cup holder is fixed on the surface of the air inlet cylinder, a sampling cup is fixed on the surface of the cup holder, an over-level sensor is fixed on the inner surface of the sampling cup, and a standard level sensor is fixed on the inner surface of the sampling cup.

[0011] In a preferred embodiment of the aerosol enrichment device of this utility model, a cup shell is fixed to the surface of the sampling cup, a circuit board is installed inside the cup shell, and a self-testing sensor is fixed to the inner surface of the sampling cup.

[0012] In a preferred embodiment of the aerosol enrichment device of this utility model, the liquid inlet assembly includes: a first inlet tube fixed to the liquid inlet connector, a liquid shortage sensor mounted on the surface of the first inlet tube, and a storage bottle fixed to the surface of the first inlet tube, with one end of the liquid shortage sensor fixed to the surface of the upper housing.

[0013] As a preferred embodiment of the aerosol enrichment device of this utility model, the liquid outlet component includes: a second infusion tube fixed to the liquid outlet connector, a liquid outlet pointer fixed to the surface of the second infusion tube, and an infusion needle fixedly connected to the surface of the liquid outlet pointer.

[0014] An arc-shaped shell is fixed to the surface of the infusion needle.

[0015] In a preferred embodiment of the aerosol enrichment device of this utility model, the positioning component includes a connecting base plate fixed to the surface of the fixed base, a liquid inlet at the center point of the connecting base plate, an elastic sealing ring fixedly connected to the surface of the connecting base plate, and a connecting top plate fixed to the top of the elastic sealing ring, the connecting top plate having a liquid inlet at the center point.

[0016] In a preferred embodiment of the aerosol enrichment device of this utility model, a positioning cylinder is fixed to the surface of the connecting top plate, an adsorption pad is fixed to the surface of the positioning cylinder, a groove is formed on the surface of the positioning cylinder, an elastic strip is fixed to the surface of the groove, and a clamping block is fixed to the surface of the elastic strip.

[0017] In a preferred embodiment of the aerosol enrichment device of this utility model, the surface of the air inlet cylinder is provided with a liquid inlet, one end of the air inlet cylinder is provided with an air inlet, and one end of the air inlet cylinder is fixed with a filter cover.

[0018] In a preferred embodiment of the aerosol enrichment device of this utility model, the top of the support frame is fixedly connected to a fixed outer shell inside the upper housing, a fan is installed inside the fixed outer shell, a control circuit board is fixed on the surface of the fixed outer shell, and an air outlet is provided on the side of the fixed outer shell.

[0019] In a preferred embodiment of the aerosol enrichment device of this utility model, a power switch is fixed on the surface of the upper housing, a USB interface one is fixed on the surface of the upper housing, and a USB interface two is fixed on the surface of the cup shell.

[0020] The beneficial effects of this invention are as follows: By using a liquid storage bottle, a peristaltic pump, and a liquid level sensor in a closed-loop control system, the liquid volume in the sampling cup can be monitored and dynamically replenished in real time. This completely avoids the problem of insufficient sampling liquid volume caused by liquid evaporation, significantly extends the sampling time, avoids operation interruptions caused by frequent liquid replenishment, and maintains a stable enrichment environment for aerosol particles in the sampling liquid by keeping the liquid level constant. This ensures the high efficiency and continuity of the sampling process and the uniformity of sample concentration. At the same time, controlling the replenishment volume effectively reduces the impact of liquid evaporation on sample concentration, providing a reliable guarantee for long-term and high-efficiency aerosol collection. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the aerosol enrichment device of this utility model.

[0023] Figure 2 This is a schematic plan view of the overall structure of the aerosol enrichment device of this utility model.

[0024] Figure 3 This is a schematic diagram of the infusion structure of the aerosol enrichment device of this utility model.

[0025] Figure 4 This is a cross-sectional view of the sampling cup of the aerosol enrichment device of this utility model.

[0026] Figure 5 This is a cross-sectional plan view of the sampling cup of the aerosol enrichment device of this utility model.

[0027] Figure 6 This is a schematic diagram of the internal structure of the upper shell of the aerosol enrichment device of this utility model.

[0028] Figure 7 This is a schematic diagram of the fixed base structure of the aerosol enrichment device of this utility model.

[0029] Figure 8 This is a schematic diagram of the positioning component structure of the aerosol enrichment device of this utility model.

[0030] Figure 9 This is a schematic diagram of the positioning cylinder structure of the aerosol enrichment device of this utility model.

[0031] In the diagram: 100. Shell structure; 101. Upper shell; 102. Support frame; 103. Air inlet; 104. Cup holder; 105. Support base; 106. Filter cover; 1011. Power switch; 1012. USB interface one; 1031. Liquid inlet; 1032. Air inlet; 200. Infusion structure; 201. Peristaltic pump; 202. Liquid inlet connector; 203. Liquid outlet connector; 204. Liquid inlet assembly; 205. Liquid outlet assembly; 2041. Infusion tube one; 2042. Low liquid sensor; 2043. Storage bottle; 2051. Infusion tube two; 2052. Discharge pointer; 2053. Infusion needle; 2053-1 300. Arc-shaped shell; 301. Fixed structure; 302. Fixed base; 303. Positioning component; 304. Connecting base plate; 305. Elastic sealing ring; 306. Positioning cylinder; 307. Adsorption pad; 308. Groove; 309. Clamping block; 3000. Elastic strip; 3010. Connecting top plate; 401. Sampling cup; 402. Cup shell; 403. USB interface 2; 4011. High liquid level sensor; 4012. Standard liquid level sensor; 4013. Self-test sensor; 4021. Circuit board; 502. Fixed outer shell; 503. Fan; 504. Power supply; 505. Control circuit board; 506. Air outlet. Detailed Implementation

[0032] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive, either alone or selectively, with other embodiments.

[0035] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0036] Example 1, referring to Figure 1 - Figure 6 This is the first embodiment of the present invention, which provides an aerosol enrichment device, the device comprising:

[0037] The housing structure 100 includes an upper housing 101, a support frame 102 fixed to the lower surface of the upper housing 101, and an air inlet 103 fixed to the surface of the support frame 102. The main function of the upper housing 101 is to fix various electrical control structures and hydraulic circuit components. The upper housing 101 is screwed onto the support frame 102 by a wing nut. The base of the support frame 102 is fixed with a support base 105 for supporting the entire device. The sampling cup 401 is connected to the air inlet 103 by a threaded connection. The working principle of this part is the prior art, which can be clearly understood by those skilled in the art, and will not be described in detail here.

[0038] The infusion structure 200 includes a peristaltic pump 201 fixed to the surface of the upper housing 101, an inlet connector 202 fixed to the side of the peristaltic pump 201, an outlet connector 203 fixed to one side of the inlet connector 202, an inlet assembly 204 fixed to the surface of the inlet connector 202, and an outlet assembly 205 fixed to the outlet connector 203. The main function of the peristaltic pump 201 is to transport the sampling liquid from the storage bottle 2043 to the sampling cup 401 through the inlet assembly 204 and the outlet assembly 205.

[0039] The fixed structure 300 includes a fixed base 301 fixed to the surface of the air inlet cylinder 103, and a positioning component 302 fixed to the surface of the fixed base 301. The positioning component 302 is located at one end of the liquid outlet component 205.

[0040] The air inlet cylinder 103 has a cup holder 104 fixed to its surface, a sampling cup 401 fixed to its surface, an over-level sensor 4011 fixed to its inner surface, and a standard level sensor 4012 fixed to its inner surface. The sampling cup 401 is fixed to the bottom of the cup holder 104, causing the airflow drawn in by the fan 502 to spiral downwards along the wall of the cup holder 104 and the cylindrical body towards the sampling cup 401, forming an outer circulation. During this rotation, the dust-laden gas generates centrifugal force, throwing particles denser than gas towards the wall of the sampling cup 401, where they combine with the sampling liquid, thus completing sample collection. The over-level sensor 4011 monitors whether there is too much sampling liquid in the sampling cup 401, transmitting a signal to the circuit board when excessive. The standard level sensor 4012 detects whether the liquid volume in the sampling cup 401 meets the required standard liquid volume for sampling, transmitting a signal to the circuit board when the standard volume is not met.

[0041] The sampling cup 401 has a cup shell 402 fixed to its surface, and a circuit board 4021 is installed inside the cup shell 402. A self-test sensor 4013 is fixed to the inner surface of the sampling cup 401. The function of the self-test sensor 4013 is to determine whether the USB interface 403 of the sampling cup 401 is connected to the USB interface 1012 on the upper housing 101. When it is determined that the connection is not made, the instrument stops working. The function of the circuit board 4021 is to transmit the liquid level information of the sampling cup 401 to the control circuit board 504.

[0042] The liquid inlet assembly 204 includes an infusion tube 2041 fixed to the inlet connector 202, a low-liquidity sensor 2042 mounted on the surface of the infusion tube 2041, and a storage bottle 2043 fixed to the surface of the infusion tube 2041. One end of the low-liquidity sensor 2042 is fixed to the surface of the upper housing 101. The low-liquidity sensor 2042 monitors the liquid level in the replenishment tube in real time. Once it detects no liquid, it sends a signal to the control circuit board 504-4021, and the sampled liquid in the storage bottle enters the peristaltic pump 201 along the infusion tube 2041 and the inlet connector 202.

[0043] The liquid dispensing assembly 205 includes a second infusion tube 2051 fixed to the liquid dispensing connector 203, a liquid dispensing pointer 2052 fixed to the surface of the second infusion tube 2051, and an infusion needle 2053 fixedly connected to the surface of the liquid dispensing pointer 2052. The sampling liquid in the peristaltic pump 201 enters the inlet 1031 on the surface of the air inlet cylinder 103 along the second infusion tube 2051 and the infusion needle 2053, and finally enters the sampling cup 401. The connection between the infusion needle 2053 and the liquid dispensing pointer 2052 has strong sealing performance.

[0044] During use, before starting the instrument, the sampling liquid needs to be added to the storage bottle 2043. The sampling cup 401 is then tightened clockwise and installed onto the cup holder 104. The filter cover 106 is then connected to the air inlet 1032 of the cup holder 104. The first infusion tube 2041 is used to connect the storage bottle 2043, the low liquid sensor 2042, and the inlet connector 202 on the peristaltic pump 201. The second infusion tube 2051 is used to connect the storage base, the storage pointer, and the infusion needle 2053. The infusion needle is then inserted into the positioning component 302. The positioning component 302 is connected to the fixed base 301, and the fixed base 301 is connected to the inlet 1031.

[0045] During device operation, if the low-liquidity sensor 2042 detects no liquid in the infusion tube 2051, it sends a signal to the control circuit board 504-4021, indicating that the sampling liquid volume in the storage bottle 2043 is insufficient. The control circuit board 504 then stops the instrument. If the liquid volume in the sampling cup 401 is excessive, it can be detected by the over-level sensor 4011, which transmits the monitoring information to the control circuit board 504, causing the instrument to stop. The system receives signals from the standard level sensor 4012. When the standard level sensor 4012 detects a no-liquid signal, it starts the replenishment pump to replenish liquid; when the standard level sensor detects a liquid signal, it stops the replenishment pump. If the standard liquid level sensor malfunctions, the continuous replenishment by the replenishment pump will cause excessive liquid in the sampling cup 401. When the control system receives the liquid signal detected by the over-level sensor 4011, the control system will terminate the sampling. The design of storing liquid in the storage bottle 2043, replenishing liquid with the peristaltic pump 201, and controlling the liquid volume with the over-level sensor 4011 and the standard liquid level sensor 4012 can realize the real-time detection of the sample liquid storage in the storage bottle 2043 and the real-time delivery of the sample liquid to the sampling cup 401.

[0046] The standard liquid level sensor 4012 works in conjunction with the peristaltic pump 201. When a no-liquid signal is detected, the peristaltic pump 201 starts replenishing the liquid; when a liquid signal is detected, replenishment stops, thus controlling the liquid level within the sampling cup 401. This ensures that the sampling liquid volume remains at an appropriate level throughout the sampling process, preventing insufficient sampling liquid from affecting aerosol collection efficiency and preventing excessive sampling liquid from reducing sample concentration. This improves the accuracy of aerosol collection and the reliability of subsequent detection and analysis.

[0047] The 4011 high-level sensor serves as a backup monitoring mechanism, enabling timely termination of sampling to prevent excessive liquid from severely impacting the sampling results and maximizing sampling quality.

[0048] Example 2, refer to Figure 1 - Figure 6This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: the surface of the air inlet cylinder 103 is provided with a liquid inlet 1031, one end of the air inlet cylinder 103 is provided with an air inlet 1032, and one end of the air inlet cylinder 103 is fixed with a filter cover 106.

[0049] Compared to the previous embodiment, the top of the support frame 102 is further fixedly connected to a fixed outer shell 501 inside the upper housing 101. A fan 502 is installed inside the fixed outer shell 501, and a control circuit board 504 is fixed to the surface of the fixed outer shell 501. An air outlet 505 is opened on the side of the fixed outer shell 501. The control circuit board 504 is the control core of the entire device. Its main function is to detect the connection status of the sampling cup 401 in real time and whether the sampling cup 401 is properly connected. When the instrument starts running, if the liquid shortage sensor 2042 detects that there is no liquid in the infusion tube 2041, it controls the peristaltic pump 201 to run for 8 seconds. When sampling begins, if the liquid shortage sensor 2042 detects that there is no liquid in the infusion tube 2041, it means that there is no sampling liquid in the storage bottle 2043, and the instrument will stop running. At the same time, according to the liquid level information in the sampling cup 401, it controls whether the peristaltic pump 201 adds liquid to the sampling cup 401, and stops the instrument running when there is excessive sampling liquid in the sampling cup 401.

[0050] When the sampling liquid in the storage bottle 2043 is depleted, the liquid shortage sensor 2042 controls the sampling device to automatically stop, preventing the device from continuing to sample and causing all the sample liquid to evaporate, thus ensuring that the sampling cup 401 retains sample liquid.

[0051] Fan 502 provides an air power source for the instrument during sampling. It uses a high-speed rotating impeller to accelerate the gas and meet the air flow requirements of the instrument's air inlet 1032.

[0052] Furthermore, a power switch 1011 is fixed to the surface of the upper housing 101, and a USB interface 1012 is fixed to the surface of the upper housing 101. A USB interface 403 is fixed to the surface of the cup shell 402. The function of USB interface 1012 and USB interface 403 of the sampling cup 401 is to serve as signal transmission interfaces. When in use, a USB extension cable is required to connect the working interfaces. After connection, the liquid volume information in the sampling cup 401 is transmitted in real time.

[0053] During use, connect the data cable to USB interface 1 and USB interface 2. Connect the power adapter to power supply 503 and turn on the instrument power switch 1011. The peristaltic pump 201 and the fan 502 will start running simultaneously. The sampling liquid is transported from the storage bottle 2043 through infusion tube 1 2041 and infusion tube 2 2051 to the infusion needle 2053. Then, under the action of the fan 502, the aerosol and air are drawn in from the filter cover 106 through the inlet 1031 and enter the cup holder 104 together. During this process, the input sampling liquid will fully mix with the large particles thrown out by centrifugal force in the air and enter the bottom of the sampling cup 401 in a spiral shape, completing the sampling.

[0054] When the instrument is plugged into power supply 503 and the instrument power switch 1011 is turned on, the control circuit board 504 in the electronic control module controls the fan 502 to run and simultaneously controls the peristaltic pump 201 to run for 8 seconds until the liquid shortage sensor 2042 detects liquid in the infusion tube. During the sampling process, when the control system receives a signal from the liquid shortage sensor 2042 that there is no liquid in the liquid delivery tube, the control system terminates the sampling and stops the operation of the fan 502 and the replenishment pump.

[0055] like Figure 3 As shown, when the device starts sampling, the peristaltic pump 201 starts to operate. Under the action of the peristaltic pump 201, the sampling liquid is transported from the storage bottle 2043 along the infusion tube 2041 to the inlet 1031 of the air inlet cylinder 103 and enters the sampling cup 401.

[0056] As shown in Figure 5, when the device starts sampling, the fan 502 starts operating simultaneously. The fan 502 drives air to enter through the air inlet 1032. Under the action of the fan 502, the airflow will accelerate along the cup holder 104 and enter the sampling cup 401 to form a downward swirling flow and move downward along the axis of the sampling cup 401. The gas entering the sampling cup 401 rotates upward in the direction of the central axis of the sampling cup 401 and finally passes through the fan 502 and is discharged from the air outlet 505.

[0057] The structure of the filter hood 106, air inlet, fan 502, and exhaust port is used to pressurize the intake of the sampling gas, realize the automatic filtration of large particles in the sampling gas, and pressurize the intake gas under the action of the fan 502 and spiral it into the sampling cup 401, thereby improving the sampling efficiency of aerosol.

[0058] The sampling cup 401 is designed using the wet-wall cyclone sampling principle, which is beneficial to improving aerosol collection efficiency.

[0059] The remaining structure is the same as that in Example 1.

[0060] Example 3, referring to Figure 1 - Figure 9This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the positioning component 302 includes a connecting base plate 3021 fixed to the surface of the fixed base 301, an inlet 1031 opened at the center point of the connecting base plate 3021, an elastic sealing ring 3022 fixedly connected to the surface of the connecting base plate 3021, and a connecting top plate 3028 fixed to the top of the elastic sealing ring 3022, an inlet 1031 opened at the center point of the connecting top plate 3028. The connecting base plate 3021 fixes the entire positioning assembly 302 onto the fixed base 301. The center lines of the inlet 1031 on the connecting base plate 3021 and the connecting top plate 3028 are coaxial and connected to the fixed base 301. When the infusion needle 2053 is installed in the positioning cylinder 3023, it is in a suspended state. The elastic sealing ring 3022 has extensibility, which allows the positioning cylinder 3023 to drive the infusion needle 2053 to make fine adjustments and deflections of the angle, avoiding stress concentration at the fixed point of the positioning cylinder 3023 due to vibration, and improving the stability of the infusion needle 2053 in use.

[0061] Compared to Embodiment 2, the surface of the infusion needle 2053 is further provided with an arc-shaped shell 2053-1, the surface of the connecting top plate 3028 is provided with a positioning cylinder 3023, the surface of the positioning cylinder 3023 is provided with an adsorption soft pad 3024, the surface of the positioning cylinder 3023 is provided with a groove 3025, the surface of the groove 3025 is provided with an elastic strip 3027, and the surface of the elastic strip 3027 is provided with a clamping block 3026. The absorbent pad 3024 acts on the surface of the infusion needle 2053. The arc-shaped shell 2053-1 increases the contact area between the absorbent pad 3024 and the infusion needle 2053, generating greater friction and increasing the sealing at the connection between the infusion needle 2053 and the positioning cylinder 3023. This makes the infusion needle 2053 more stable in the positioning cylinder 3023. On the one hand, simply inserting the needle into the positioning cylinder 3023 is sufficient. Since the diameter of the central circular hole of the two clamping blocks 3026 is smaller than the diameter of the infusion needle 2053, the compression of the infusion needle 2053 and the action of the elastic strip 3027 increase the fixation of the infusion needle 2053, facilitating the installation of the infusion needle 2053. On the other hand, when disassembling the infusion needle 2053, simply pull the infusion needle 2053 out of the positioning cylinder 3023 with force, making disassembly of the infusion needle 2053 easy.

[0062] The remaining structure is the same as that in Example 2.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An aerosol enrichment device, characterized in that: include, The shell structure (100) includes an upper shell (101), a support frame (102) fixed to the lower surface of the upper shell (101), and an air inlet (103) fixed to the surface of the support frame (102). The infusion structure (200) includes a peristaltic pump (201) fixed to the surface of the upper housing (101), an inlet connector (202) fixed to the side of the peristaltic pump (201), an outlet connector (203) fixed to one side of the inlet connector (202), an inlet assembly (204) fixed to the surface of the inlet connector (202), and an outlet assembly (205) fixed to the outlet connector (203). The fixed structure (300) includes a fixed base (301) fixed to the surface of the air inlet cylinder (103) and a positioning component (302) fixed to the surface of the fixed base (301), the positioning component (302) being located at one end of the liquid outlet component (205).

2. The aerosol enrichment device according to claim 1, characterized in that: A cup holder (104) is fixed to the surface of the air inlet cylinder (103), a sampling cup (401) is fixed to the surface of the cup holder (104), an over-level sensor (4011) is fixed to the inner surface of the sampling cup (401), and a standard level sensor (4012) is fixed to the inner surface of the sampling cup (401).

3. The aerosol enrichment device according to claim 2, characterized in that: The sampling cup (401) has a cup shell (402) fixed on its surface. A circuit board (4021) is installed inside the cup shell (402). A self-test sensor (4013) is fixed on the inner surface of the sampling cup (401).

4. The aerosol enrichment device according to claim 3, characterized in that: The liquid inlet assembly (204) includes an infusion tube (2041) fixed to the liquid inlet connector (202), a low liquid sensor (2042) mounted on the surface of the infusion tube (2041), and a storage bottle (2043) fixed to the surface of the infusion tube (2041). One end of the low liquid sensor (2042) is fixed to the surface of the upper housing (101).

5. The aerosol enrichment device according to claim 4, characterized in that: The liquid dispensing assembly (205) includes an infusion tube two (2051) fixed to the liquid dispensing connector (203), an infusion pointer (2052) fixed to the surface of the infusion tube two (2051), and an infusion needle (2053) fixedly connected to the surface of the infusion pointer (2052). The surface of the infusion needle (2053) is fixed with an arc-shaped shell (2053-1).

6. The aerosol enrichment device according to claim 5, characterized in that: The positioning component (302) includes a connecting base plate (3021) fixed to the surface of the fixed base (301), with a liquid inlet (1031) at the center point of the connecting base plate (3021), an elastic sealing ring (3022) fixedly connected to the surface of the connecting base plate (3021), and a connecting top plate (3028) fixed to the top of the elastic sealing ring (3022), with a liquid inlet (1031) at the center point of the connecting top plate (3028).

7. The aerosol enrichment device according to claim 6, characterized in that: A positioning cylinder (3023) is fixed to the surface of the connecting top plate (3028), an adsorption pad (3024) is fixed to the surface of the positioning cylinder (3023), a groove (3025) is formed on the surface of the positioning cylinder (3023), an elastic strip (3027) is fixed to the surface of the groove (3025), and a clamping block (3026) is fixed to the surface of the elastic strip (3027).

8. The aerosol enrichment device according to claim 7, characterized in that: The surface of the air inlet cylinder (103) is provided with a liquid inlet (1031), one end of the air inlet cylinder (103) is provided with an air inlet (1032), and one end of the air inlet cylinder (103) is fixed with a filter cover (106).

9. The aerosol enrichment device according to claim 8, characterized in that: The top of the support frame (102) is fixedly connected to a fixed outer shell (501) inside the upper shell (101). A fan (502) is installed inside the fixed outer shell (501). A control circuit board (504) is fixed on the surface of the fixed outer shell (501). An air outlet (505) is opened on the side of the fixed outer shell (501).

10. The aerosol enrichment device according to claim 9, characterized in that: A power switch (1011) is fixed on the surface of the upper housing (101), a USB interface one (1012) is fixed on the surface of the upper housing (101), and a USB interface two (403) is fixed on the surface of the cup shell (402).

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