Aerosol inhalation toxicity contamination test system

Abstract

The utility model relates to the technical field of contamination test devices, in particular to an aerosol inhalation toxicity contamination test system which comprises an aerosol generator, a gas flow meter, a contamination chamber, a controller and an adjusting device, the aerosol generator is installed on one side of the top end of the contamination chamber, a conveying pipe is installed at the bottom of the aerosol generator, and the gas flow meter is installed on the conveying pipe. The output end of the conveying pipe penetrates through the top wall of the contamination chamber and extends to an inner cavity of the contamination chamber, the gas flow meter is installed on the outer wall of the conveying pipe and controls operation of the aerosol generator and the air blower, and the situation that a human body is exposed in an aerosol environment is simulated by controlling the flow of the aerosol generator and the suction volume of the air blower; the air blower in the contamination chamber is used for generating airflow similar to human respiration, aerosol is inhaled into the contamination chamber, experimental animals or cells are placed in the contamination chamber, and physiological indexes of the experimental animals or cells are recorded regularly and toxic reactions of the experimental animals or cells are observed regularly.

Description

Technical Field

[0001] The utility model relates to the technical field of poisoning test devices, in particular to an aerosol inhalation toxicity poisoning test system. Background Art

[0002] As we all know, aerosol refers to a gaseous dispersion system composed of solid or liquid particles suspended in a gas medium. Due to its small particle size, aerosol can be directly inhaled into the lungs, causing serious health effects. Therefore, the study of aerosol inhalation toxicity is of vital importance. However, the current aerosol inhalation toxicity test system has problems such as complex operation, low precision and poor safety, which makes it difficult to meet the needs of scientific research and practical applications. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies of the prior art, the utility model provides an aerosol inhalation toxicity exposure test system.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an aerosol inhalation toxicity poisoning test system, comprising an aerosol generator, a gas flow meter, a poisoning chamber, a controller and an adjusting device, wherein the aerosol generator is installed on one side of the top of the poisoning chamber, a delivery pipe is installed at the bottom of the aerosol generator, the output end of the delivery pipe passes through the top wall of the poisoning chamber and extends to the inner cavity of the poisoning chamber, the gas flow meter is installed on the outer wall of the delivery pipe, a speed regulator is installed on the delivery pipe directly below the gas flow meter, the controller is installed at the other end of the poisoning chamber, the adjusting device comprises a threaded rod, a slider and a blower, a threaded rod is installed on the top of the poisoning chamber for transverse rotation, a slider is threadedly connected to the threaded rod, the bottom end of the slider is connected to the blower through a connecting rod, the top of the blower is connected to the delivery pipe through a universal telescopic tube, a box door is installed on one side of the poisoning chamber, and a handle is installed on the box door.

[0007] In order to prevent the slider from rotating, the utility model has an improvement that two groups of fixed rods are fixedly installed in the poisoning chamber, sleeves are slidably installed on the fixed rods, the sleeves are fixedly connected to the slider, and the fixed rods are symmetrically arranged about the central axis of the threaded rod.

[0008] In order to facilitate driving the threaded rod to rotate, the utility model is improved in that one end of the threaded rod passes through the side wall of the contamination chamber and is provided with a driving motor.

[0009] In order to facilitate the control of the working status of each electrical device, the utility model is improved in that the speed regulator, gas flow meter, aerosol generator and drive motor are electrically connected to the controller.

[0010] In order to increase the service life of the connecting rod, the utility model is improved in that the connecting rod is of L-shaped design.

[0011] In order to ensure the stability and accuracy of the operation of the driving motor, the utility model is improved in that the driving motor is a servo motor.

[0012] In order to improve the overall stability of the poisoning chamber, the utility model is improved in that support legs are installed at the four corners of the bottom end of the poisoning chamber.

[0013] In order to ensure the stability of the supporting legs, the utility model is improved in that a rubber pad is installed on the bottom wall of the supporting legs.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides an aerosol inhalation toxicity test system, which has the following beneficial effects:

[0016] The aerosol inhalation toxicity poisoning test system can simulate the human breathing process to inhale the aerosol into the poisoning room through the aerosol generator, gas flow meter, poisoning room and controller, micro blower, speed regulator and gas flow meter. The controller adopts control elements such as microcontroller or single chip microcomputer, sets various parameters according to test requirements, controls the operation of the aerosol generator and the blower, and simulates the situation that the human body is exposed to the aerosol environment by controlling the flow of the aerosol generator and the inhalation amount of the blower. The blower in the poisoning room is used to generate an airflow similar to human breathing to inhale the aerosol into the poisoning room. The inhalation toxicity of the aerosol is evaluated by regularly recording its physiological indicators and observing its toxic reaction. At the same time, the threaded rod is rotated, the threaded rod drives the slider to move on the threaded rod, and the slider drives the blower to realize the movement of the blower, so that the toxicity inhaled by the blower is more uniform in the poisoning room. Through the utility model, the inhalation toxicity of the aerosol can be evaluated more accurately and safely, providing strong support for research and application in related fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from a first angle;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from a second angle;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model from a third angle;

[0020] Figure 4 For the utility model Figure 3 An enlarged structural diagram of local A.

[0021] In the figure: 1. aerosol generator; 2. gas flow meter; 3. contamination chamber; 4. controller; 5. delivery pipe; 6. speed regulator; 7. threaded rod; 8. slider; 9. connecting rod; 10. blower; 11. universal telescopic tube; 12. box door; 13. handle; 14. fixing rod; 15. sleeve; 16. drive motor; 17. support leg. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4An aerosol inhalation toxicity test system comprises an aerosol generator 1, a gas flow meter 2, a poison chamber 3, a controller 4 and an adjusting device. The aerosol generator 1 is installed on one side of the top of the poison chamber 3, a delivery pipe 5 is installed at the bottom of the aerosol generator 1, the output end of the delivery pipe 5 passes through the top wall of the poison chamber 3 and extends to the inner cavity of the poison chamber 3, the gas flow meter 2 is installed on the outer wall of the delivery pipe 5, a speed regulator 6 is installed on the delivery pipe 5 directly below the gas flow meter 2, the controller 4 is installed at the other end of the poison chamber 3, and the adjusting device comprises a threaded rod 7, a slider 8 and a blower 10. A threaded rod 7 is installed on the top of the poisoning chamber 3 for transverse rotation. A slider 8 is threadedly connected to the threaded rod 7. The bottom end of the slider 8 is connected to the blower 10 through a connecting rod 9. The top of the blower 10 is connected to the delivery pipe 5 through a universal telescopic tube 11. A box door 12 is installed on one side of the poisoning chamber 3. A handle 13 is installed on the box door 12. In this embodiment, when preparing an aerosol inhalation toxicity poisoning test, first prepare the test materials, configure the aerosol, and place the experimental animals or cells in the poisoning chamber 3. The aerosol generator 1 can use a corona discharge method, an ultrasonic method, or a laser method to generate an aerosol of a desired concentration. The gas flow meter 2 is used The control device 1 is used to control the flow rate of the aerosol to ensure that the concentration of the aerosol in the poisoning chamber 3 is constant. The poisoning chamber 3 is made of transparent organic glass or stainless steel material to observe the state of the experimental animals or cells. The micro blower 10, the speed regulator 6 and the gas flow meter 2 can simulate the human breathing process to inhale the aerosol into the poisoning chamber 3. The controller 4 uses a microcontroller 4 or a single-chip microcomputer and other control elements. The parameters are set according to the test requirements to control the operation of the aerosol generator 1 and the blower 10. By controlling the flow rate of the aerosol generator 1 and the inhalation amount of the blower 10, the human body is exposed to the aerosol environment. The blower 10 in the poisoning chamber 3 is used to An airflow similar to human breathing is generated to inhale the aerosol into the poisoning chamber 3. Experimental animals or cells are placed in the poisoning chamber 3. The inhalation toxicity of the aerosol is evaluated by regularly recording their physiological indicators and observing their toxic reactions. At the same time, the threaded rod 7 is rotated, and the threaded rod 7 drives the slider 8 to move on the threaded rod 7. The slider 8 drives the blower 10 to move the blower 10, so that the toxicity inhaled by the blower 10 is more uniform in the poisoning chamber 3. The device can also be used in the fields of environmental protection, occupational health and safe production. Through the utility model, the inhalation toxicity of the aerosol can be evaluated more accurately and safely, providing strong support for research and application in related fields.

[0024] In actual use, in order to further prevent the slider 8 from rotating, in the present embodiment, two sets of fixed rods 14 are fixedly installed in the contamination chamber 3, and sleeves 15 are slidably installed on the fixed rods 14. The sleeves 15 are fixedly connected to the slider 8. The fixed rods 14 are symmetrically arranged about the central axis of the threaded rod 7. During the movement of the slider 8, the sleeves 15 are driven by the fixed rods 14 to slide, which guides the movement of the slider 8 and prevents the slider 8 from rotating.

[0025] In actual use, it is further convenient to drive the threaded rod 7 to rotate. In this embodiment, one end of the threaded rod 7 passes through the side wall of the contamination chamber 3 and is provided with a drive motor 16. The drive motor 16 is started, and the output end of the drive motor 16 drives the threaded rod 7 to rotate, thereby realizing the rotation of the threaded rod 7.

[0026] In actual use, it is further convenient to control the working status of each electrical device. In this embodiment, the speed regulator 6, gas flow meter 2, aerosol generator 1 and drive motor 16 are electrically connected to the controller 4, which is further convenient to control the working status of each electrical device and realize the automation of toxicity exposure test.

[0027] In actual use, the service life of the connecting rod 9 is further increased. In this embodiment, the connecting rod 9 is L-shaped, and the L-shaped connecting rod 9 is an integrated molding design, which further increases the service life of the connecting rod 9.

[0028] In actual use, the stability and accuracy of the operation of the drive motor 16 are further guaranteed. In this embodiment, the drive motor 16 is a servo motor. The servo motor can control the position, speed and torque with high precision. The servo motor adopts closed-loop control and has good stability. It can avoid stalling, vibration and other problems, and improve the stability and accuracy of the operation of the drive motor 16.

[0029] In actual use, the overall stability of the poison chamber 3 is further improved. In this embodiment, support legs 17 are installed at the four corners of the bottom of the poison chamber 3. The support legs 17 provide a stable base for the poison chamber 3, increase the stability of the device in various environments, and prevent the device from tipping over or moving. The support legs 17 can not only improve the stability of the device, but also improve safety and work efficiency.

[0030] In actual use, in order to further ensure the stability of the support leg 17, in this embodiment, a rubber pad is installed on the bottom wall of the support leg 17, which can ensure the stability of the support leg 17 and avoid the risk of tilting and collapsing due to uneven ground, thereby improving the safety factor of the operation.

[0031] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aerosol inhalation toxicity test system, comprising an aerosol generator (1), a gas flow meter (2), a poison chamber (3), a controller (4) and a regulating device, characterized in that: The aerosol generator (1) is installed on one side of the top of the poison chamber (3), and a delivery pipe (5) is installed at the bottom of the aerosol generator (1). The output end of the delivery pipe (5) passes through the top wall of the poison chamber (3) and extends to the inner cavity of the poison chamber (3). The gas flow meter (2) is installed on the outer wall of the delivery pipe (5). A speed regulator (6) is installed on the delivery pipe (5) directly below the gas flow meter (2). The controller (4) is installed at the other end of the poison chamber (3). The adjusting device comprises a threaded rod (7), a slider (8) and a blower (10); the threaded rod (7) is installed on the top of the poisoning chamber (3) for transverse rotation; the slider (8) is threadedly connected to the threaded rod (7); the bottom end of the slider (8) is connected to the blower (10) via a connecting rod (9); the top end of the blower (10) is connected to the delivery pipe (5) via a universal telescopic tube (11); a box door (12) is installed on one side of the poisoning chamber (3); and a handle (13) is installed on the box door (12).

2. The aerosol inhalation toxicity test system according to claim 1, characterized in that: Two groups of fixed rods (14) are fixedly installed in the poisoning chamber (3), sleeves (15) are slidably installed on the fixed rods (14), and the sleeves (15) are fixedly connected to the slider (8). The fixed rods (14) are symmetrically arranged with respect to the central axis of the threaded rod (7).

3. The aerosol inhalation toxicity test system according to claim 2, characterized in that: One end of the threaded rod (7) passes through the side wall of the contamination chamber (3) and is sleeved with a driving motor (16).

4. The aerosol inhalation toxicity test system according to claim 3, characterized in that: The speed regulator (6), the gas flow meter (2), the aerosol generator (1) and the drive motor (16) are electrically connected to the controller (4).

5. The aerosol inhalation toxicity test system according to claim 4, characterized in that: The connecting rod (9) is of L-shaped design.

6. The aerosol inhalation toxicity test system according to claim 5, characterized in that: The driving motor (16) is a servo motor.

7. An aerosol inhalation toxicity test system according to claim 6, characterized in that: Support legs (17) are installed at the four corners of the bottom end of the contamination chamber (3).

8. The aerosol inhalation toxicity test system according to claim 7, characterized in that: The bottom wall of the supporting leg (17) is provided with a rubber pad.

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