CN107374585B - A fog and haze environment simulation device for experimental animals - Google Patents

Abstract

A fog and haze environment simulation device for experimental animals disclosed by the invention comprises a fog and haze generating device, a fog and haze simulation environment poisoning device and a fog and haze detection device connected in sequence, and the fog and haze detection device is connected with a computer signal interactive feedback control through a wire device, the smog detection device includes a gas sampling tube, one end of the gas sampling tube is connected to the smog simulation environment poisoning device, the other end of the gas sampling tube is connected to a gas collector, and the gas collector is also connected to an air quality detector through the pipeline , the air quality detector is connected with the computer signal interactive feedback control device through wires. The present invention can simulate the meteorological and pollution conditions of fog and haze weather, such as: automobile exhaust, coal combustion exhaust gas of thermal power plant, industrial dust, burning dry plants, etc. The designed device can produce fog and haze environment with adjustable degree and controllable conditions , used for long-period, heavy haze environment simulation and related animal experiments.

Description

A fog and haze environment simulation device for experimental animals

technical field

The invention belongs to the technical field of atmospheric environment research equipment, and in particular relates to a haze environment simulation device for experimental animals.

Background technique

In recent years, smog has occurred frequently, and smog contains hundreds of particulate matter, which, as a gas, solid, and liquid multiphase body, can induce respiratory system, cardiovascular system, blood System, reproductive system and other diseases seriously endanger people's health. It is imperative to prepare an effective smog environment simulator in order to further study the law and process of the impact of smog environment on production and life. However, most of the existing smog-simulating devices are large-scale equipment for studying changes in the microscopic fields such as molecular reactions and photochemical effects in the atmosphere. The small-scale smog environment simulation devices used for animal experiments have few varieties, simple functions, and inaccurate data.

The Chinese patent document with the application number 2016100308882 discloses a smog environment simulation and monitoring device. The device is divided into two boxes separated by wooden boards and barbed wire. One box burns to produce solid particle aerosols and passes them to the other box. The overall composition of the device is relatively ideal, the components are simple, and it cannot be close to the real haze state of complex components. The living conditions of experimental animals are poor, there are many interference factors, and the experimental data is not accurate.

Contents of the invention

The object of the present invention is to provide a smog environment simulation device for experimental animals, which can prepare a stable and controllable smog environment that reflects the complex composition characteristics of real smog, and at the same time provide a good living environment for experimental animals and reduce interference factors.

The technical scheme adopted in the present invention is: a haze environment simulation device for experimental animals, including a haze generating device, a haze simulation environment poisoning device and a haze detection device connected in sequence, and the haze detection device is connected by a wire. The computer signal interactive feedback control device, the smog detection device includes a gas sampling tube, one end of the gas sampling tube is connected with the poison exposure device in the smog simulation environment, the other end of the gas sampling tube is connected with a gas collector, and the gas collector is connected through a pipeline. The air quality detector is connected with the computer signal interactive feedback control device through wires.

The present invention is also characterized in that,

The smog generating device includes the haze component aging device, powder aerosol generating device, ultrasonic water mist aerosol generating device and combustion exhaust gas generating device, the powder aerosol generating device, ultrasonic water mist aerosol generating device and the gas outlet of the combustion exhaust gas generating device The smog component aging device is kept in communication with the smog components through pipelines. The smog generating device also includes an air pump. The air port is connected, and the haze component aging device is connected with the haze simulated environment poisoning device through the pipeline; the air inlets of the powder aerosol generating device, ultrasonic water mist aerosol generating device and combustion exhaust gas generating device are all equipped with gas Source purification device; powder aerosol generating device, ultrasonic water mist aerosol generating device and combustion exhaust gas generating The pipes connecting the device to the aging device for haze components are provided with electromagnetic valves for controlling opening and closing.

The combustion exhaust gas generating device includes a shell, an electric ignition device is provided on the inner wall of the shell, a combustion chamber is also provided inside the shell, and a gas condensation drying pipe is provided on the outer wall of the shell. The gas condensation drying pipe includes a horizontally placed pipe body, One end of the pipe body is provided with a combustion exhaust gas inlet, which communicates with the shell through a pipe, and the other end of the pipe body is provided with a combustion exhaust gas outlet, which communicates with the smog component aging device through a pipe , the top of the outer wall of the tube is provided with a semiconductor cooling chip, and the bottom of the tube is provided with a condensate drain pipe.

The ultrasonic water mist aerosol generating device includes an ultrasonic water mist aerosol generating device shell, an ultrasonic atomizer is arranged inside the ultrasonic water mist aerosol generating device shell, and a feeding pipe is arranged on the ultrasonic atomizer, and one end of the feeding pipe communicates with the ultrasonic atomizer , the other end of the feeding pipeline passes through the shell of the ultrasonic water mist aerosol generating device, the shell of the ultrasonic water mist aerosol generating device is connected with an air input pipe, the shell of the ultrasonic water mist aerosol generating device communicates with the air outlet of the air pump through the air input pipe, and the ultrasonic The shell of the water mist aerosol generating device is also connected with an aerosol output pipeline, and the shell of the ultrasonic water mist aerosol generating device communicates with the haze component aging device through the aerosol output pipeline.

The powder aerosol generating device comprises a powder fluidized bottle, the side wall of the powder fluidized bottle is provided with a powder aerosol output pipeline, one end of the powder aerosol output pipeline communicates with the powder fluidized bottle, and the powder aerosol output pipeline The other end is connected with an aerosol dilution bottle, the end of the powder aerosol output pipeline is located in the aerosol dilution bottle, and the end of the powder aerosol output pipeline located in the aerosol dilution bottle is provided with a cap, and the cap is provided with a through hole, and the gas There is also a low-concentration aerosol gas outlet on the outer wall of the sol dilution bottle, and the low-concentration aerosol gas outlet is connected with the smog composition aging device through a pipeline. The diameter of the top opening is not smaller than the diameter of the bottom opening, and the top port of the gas shock tube passes through the outer wall of the powder fluidized bottle through a pipeline and communicates with the gas outlet of the air pump.

The smog component aging device includes a gas mixing chamber, the inner wall of the gas mixing chamber is equipped with an ultraviolet light source, and the inner wall of the gas mixing chamber is also equipped with a pressure stabilizing piston, and the gas mixing chamber is exposed to the smog simulated environment through pipelines. The device, the combustion exhaust gas outlet, the low-concentration aerosol outlet and the shell of the ultrasonic water mist aerosol generating device are connected.

The smog simulation environment poison exposure device includes a tank body, which is provided with a compartment along the horizontal direction, and a temperature and humidity monitor is also installed on the compartment; the gas sampling tube is a pipeline with one end closed, and the closed end of the gas sampling tube is closed. The part is located in the tank, the other end of the gas sampling tube communicates with the gas collector, the side wall of the gas sampling tube has a number of air intake through holes, and the number of air intake through holes are all located in the tank.

The pipeline connecting the gas collector and the air quality detector is also provided with a solenoid valve for controlling opening and closing, and the gas outlet of the air quality detector is also provided with a gas purifier.

The computer signal interactive feedback control device includes a computer, and the computer is connected to a PLC industrial control module through a wire, and the PLC industrial control module is also connected to a solenoid valve for controlling flow and a solenoid valve for controlling opening and closing through wires.

The beneficial effects of the present invention are:

1) A smog environment simulation device for experimental animals of the present invention, through a powder aerosol generating device, an ultrasonic water mist aerosol generating device, a combustion exhaust gas generating device and a haze component aging device, there is no interference effect between each reaction device, Simulate the composition of the haze from the source of the haze, so that the simulated haze environment is closer to the real haze, and use the haze composition aging device to simulate the transformation and transformation of the interaction of the haze in the atmosphere;

2) A haze environment simulation device for experimental animals of the present invention is provided with some evenly distributed gas sampling tubes on the wall surface of the simulated haze environment. Collector, so as to measure the haze characteristic parameters of different parts of the haze simulation environment, such as: temperature and humidity, and the size, quantity, concentration, etc. of haze particles, which can better reflect the real haze characteristics;

3) A smog environment simulation device for experimental animals of the present invention, through the smog detection device, utilizes the air quality detector to include a gas collector connected to the gas sampling pipe, and can regularly check the smog in the smog simulation environment poisoning device. Haze, real-time detection;

4) A haze environment simulation device for experimental animals of the present invention collects all simulated mixed gases and emissions into a stable container through the haze composition aging device, and the haze composition aging device is based on the method that is beneficial to the simulation The gas or mixture is fully and evenly mixed and distributed in a geometric shape, such as a cylinder, a sphere, or a hemisphere, etc. The size of the cavity can be designed according to the gas discharge of the smog generating device;

5) A kind of haze environment simulation device for experimental animals of the present invention, the on-off time of the electromagnetic valve of the haze detection device and the interval time measured by the air quality detector can be set on the computer, wherein the electromagnetic valve is controlled by the computer through the PLC Industrial control module control; through the PLC industrial control module to control the electric piston of the gas collector to extract the haze gas and send it to the air quality detector for detection, the detection results are fed back in real time, and the computer automatically records and analyzes and draws relevant images, the operating system is visualized, and human-computer interaction in good condition;

6) A smog environment simulation device for experimental animals of the present invention can add fine particle dust of different particle sizes and types to the powder aerosol generating device, and the ultrasonic water mist aerosol generating device can add different solutions, and select different solutions according to the properties of the solutions. Materials; choose different combustion materials in the combustion exhaust gas generating device, such as fossil fuels, artificial synthetic fuels, shredded tobacco, chemical products, etc.

Description of drawings

Fig. 1 is the structural representation of a kind of experimental animal haze environment simulation device of the present invention;

Fig. 2 is a schematic structural view of a gas sampling tube in a haze environment simulation device for experimental animals of the present invention;

Fig. 3 is a schematic structural view of an ultrasonic water mist aerosol generating device in a haze environment simulation device for experimental animals of the present invention;

Fig. 4 is a schematic structural view of a powder aerosol generating device in a haze environment simulation device for experimental animals of the present invention;

Fig. 5 is a schematic structural view of a gas condensation drying tube in a smog environment simulation device for experimental animals of the present invention;

Fig. 6 is a schematic structural diagram of a haze component aging device in a haze environment simulation device for experimental animals of the present invention.

In the figure, 1. Air pump, 2. Combustion exhaust gas generating device, 3. Gas sampling tube, 4. Ultrasonic water mist aerosol generating device, 5. Powder aerosol generating device, 6. Gas condensation drying tube, 7. Haze components Aging device, 8. Gas collector, 9. Air quality detector, 10. Haze simulation environment poisoning device;

3-1. Air intake through hole;

4-1. Ultrasonic water mist aerosol generating device shell, 4-2. Ultrasonic atomizer, 4-3. Feeding pipeline, 4-4. Air input pipeline, 4-5. Aerosol output pipeline;

5-1. Powder fluidized bottle, 5-2. Powder aerosol output pipe, 5-3. Aerosol dilution bottle, 5-4. Cap, 5-5. Low concentration aerosol outlet, 5-6. gas impingement tube;

6-1. Pipe body, 6-2. Combustion exhaust gas inlet, 6-3. Combustion exhaust gas outlet, 6-4. Condensate drain pipe, 6-5. Semiconductor refrigeration chip;

7-1. Gas mixing chamber, 7-2. Ultraviolet light source, 7-3. Pressure stabilizing piston.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

A kind of fog and haze environment simulation device for experimental animals of the present invention, as shown in Figure 1, comprises the fog and haze generation device that communicates successively, fog and haze simulated environment poisoning device 10 and fog and haze detection device, and fog and haze detection device is connected by wire. The computer signal interactive feedback control device, the haze detection device includes a gas sampling tube 3, one end of the gas sampling tube 3 communicates with the haze simulated environment poisoning device 10, the other end of the gas sampling tube 3 is connected with a gas collector 8, and the gas collection The device 8 is connected with an air quality detector 9 through a pipeline, and the air quality detector 9 is connected with the computer signal interactive feedback control device through a wire.

The smog generating device includes a smog component aging device 7, a powder aerosol generating device 5, an ultrasonic water mist aerosol generating device 4 and a combustion exhaust gas generating device 2, a powder aerosol generating device 5, an ultrasonic water mist aerosol generating device 4 and a combustion exhaust gas generating device 5. The air outlet of the exhaust gas generating device 2 is kept in communication with the smog composition aging device 7 through pipelines respectively, and the smog generating device also includes an air pump 1, and the air outlet of the air pump 1 is respectively connected with the powder aerosol generating device 5, the ultrasonic water filter through the pipeline. The air inlet of the mist aerosol generating device 4 and the combustion exhaust gas generating device 2 is connected, and the haze component aging device 7 is communicated with the described haze simulated environment poisoning device 10 through a pipeline; the powder aerosol generating device 5, ultrasonic water mist aerosol The gas source purification device is provided at the air inlet of the generating device 4 and the combustion exhaust gas generating device 2; The flow solenoid valve, the powder aerosol generating device 5, the ultrasonic water mist aerosol generating device 4 and the combustion exhaust gas generating device 2 are respectively provided with a solenoid valve for controlling opening and closing on the pipelines communicating with the haze component aging device 7.

The combustion exhaust gas generating device 2 includes a shell, an electric ignition device is provided on the inner wall of the shell, a combustion chamber is also provided inside the shell, and a gas condensation drying tube 6 is provided on the outer wall of the shell, and the gas condensation drying tube 6 includes a horizontally placed A pipe body 6-1, one end of the pipe body 6-1 is provided with a combustion exhaust gas inlet 6-2, the combustion exhaust gas inlet 6-2 is connected to the shell through a pipe, and the other end of the pipe body 6-1 is provided with a combustion air inlet 6-2. The exhaust gas outlet 6-3, the combustion exhaust gas outlet 6-3 communicates with the smog composition aging device 7 through the pipeline, the top of the outer wall of the pipe body 6-1 is provided with a semiconductor refrigeration chip 6-5, and the bottom of the pipe body 6-1 is provided with There is a condensate drain pipe 6-4.

The ultrasonic water mist aerosol generating device 4 includes an ultrasonic water mist aerosol generating device housing 4-1, the ultrasonic water mist aerosol generating device housing 4-1 is internally provided with an ultrasonic nebulizer 4-2, and the ultrasonic nebulizer 4-2 uses a piezoelectric Type ultrasonic transducer, brand name: YADU/亚都, model AW0509, the ultrasonic atomizer 4-2 is provided with a feeding pipe 4-3, one end of the feeding pipe 4-3 communicates with the ultrasonic atomizer 4-2, feeding The other end of the pipeline 4-3 passes through the housing 4-1 of the ultrasonic water mist aerosol generating device, the housing 4-1 of the ultrasonic water mist aerosol generating device is connected with an air input pipeline 4-4, and the housing 4-1 of the ultrasonic water mist aerosol generating device The air input pipeline 4-4 communicates with the air outlet of the air pump 1, the ultrasonic water mist aerosol generating device housing 4-1 is also connected to the aerosol output pipeline 4-5, and the ultrasonic water mist aerosol generating device housing 4-1 passes through the aerosol Output pipeline 4-5 is communicated with smog composition aging device 7.

Powder aerosol generating device 5 comprises powder fluidized bottle 5-1, and powder fluidized bottle 5-1 adopts the 3400A fluidized bed of American TSI company, is provided with powder aerosol output pipeline 5-2 on the side wall, powder One end of the aerosol output pipeline 5-2 communicates with the powder fluidized bottle 5-1, the other end of the powder aerosol output pipeline 5-2 is connected with the aerosol dilution bottle 5-3, and the powder aerosol output pipeline 5-2 The end is located in the aerosol dilution bottle 5-3, and the end of the powder aerosol output pipeline 5-2 located in the aerosol dilution bottle 5-3 is provided with a cap 5-4, and the cap 5-4 is provided with a through hole. The outer wall of the sol dilution bottle 5-3 also has a low-concentration aerosol gas outlet 5-5, and the low-concentration aerosol gas outlet 5-5 communicates with the smog composition aging device 7 through a pipeline, and the powder fluidized bottle 5-5 1. A gas impact tube 5-6 is vertically provided inside. The gas impact tube 5-6 is a blowpipe whose diameter gradually becomes thinner. The diameter of the top opening of the gas impact tube 5-6 is not less than the diameter of the bottom opening. The gas impact tube 5-6 The top port of 5-6 passes through the outer wall of the powder fluidized bottle 5-1 through a pipeline and communicates with the air outlet of the air pump 1.

The haze composition aging device 7 includes a gas mixing chamber 7-1, an ultraviolet light source 7-2 is provided on the inner wall of the gas mixing chamber 7-1, and a pressure stabilizing piston 7-2 is also provided on the inner wall of the gas mixing chamber 7-1. 3. The pressure stabilizing piston 7-3 is a low-resistance piston, which can change its volume according to the pressure. The gas mixing chamber 7-1 is respectively connected to the smog simulation environment poisoning device 10, the combustion exhaust gas outlet 6-3, and the low The concentration aerosol gas outlet 5-5 is connected with the shell 4-1 of the ultrasonic water mist aerosol generating device.

The smog simulated environment poisoning device 10 includes a tank body, the inside of the tank body is provided with a compartment along the horizontal direction, and a temperature and humidity monitor is also provided on the compartment; the gas sampling tube 3 is a pipeline with one end closed, and the gas sampling tube 3 The closed end is located in the tank, and the other end of the gas sampling tube 3 communicates with the gas collector 8, and the side wall of the gas sampling tube 3 is provided with some air intake through holes 3-1, and some air intake through holes 3-1. 1 are located in the tank.

The pipeline connecting the gas collector 8 and the air quality detector 9 is also provided with a solenoid valve for controlling opening and closing, and the gas outlet of the air quality detector 9 is also provided with a gas purifier, which is filled in the middle of a glass tube Drugs that filter gases.

The gas collector 8 includes a cylindrical gas collection chamber, openings are provided on the two opposite side walls of the gas collection chamber, the gas collection chamber is connected to the pipeline through two openings, and each pipeline is provided with a gas check valve , the gas collection chamber is also vertically provided with a piston, the piston is controlled by a motor, and the openings on the two side walls of the gas collection chamber are respectively communicated with the first gas sampling tube 3 and the air quality detector 9 through pipelines, wherein the air quality detector 9 is the model BASIC-5 of BUCK in the United States.

The computer signal interactive feedback control device includes a computer, and the computer is connected to a PLC industrial control module through a wire, and the PLC industrial control module is also connected to a solenoid valve for controlling flow and a solenoid valve for controlling opening and closing through wires.

During use, as shown in Figure 1, the powder aerosol generating device 5, the ultrasonic water mist aerosol generating device 4, and the combustion exhaust gas generating device 2 in the smog generating device pass through the powder aerosol gas delivery pipeline and the water mist aerosol gas delivery respectively. The pipeline and the combustion exhaust gas delivery pipeline are connected with the haze component aging device 7, and the gas delivery pipelines are respectively provided with electromagnetic valves that can be controlled to open and close. The mold environment poisoning device is connected, and the air pump 1 is also provided in the smog generating device, and the air pump 1 provides the combustion waste gas generating device 2 with the oxygen required for combustion; the air pump 1 generates positive pressure, and uses the positive pressure to make the powder The powder aerosol that the aerosol generating device 5 produces, the water mist aerosol that the ultrasonic water mist aerosol generating device 4 produces and the aerosol containing the solid particle that the combustion waste gas generating device 2 produces is discharged in the smog component aging device 7; Before the animal experiment of the device, first start the device, the sequence is to first turn on the smog generating device to preheat for 20 minutes, then start the air quality detector 9 to monitor the generated smog, and compare the data of the smog gas to see if it conforms to the experiment If the indicators do not meet the experimental standards, the relevant components need to be adjusted for adjustment. When the data of haze gas meets the experimental index or after adjustment meets the experimental index, keep the device running for 6-10 minutes, record the data of haze gas, observe whether the fluctuation range of the data meets the experimental requirements, and put it in after meeting the requirements. experimental animals. After placing the experimental animals, the gas purification device can be turned on, and the ratio of carbon dioxide to oxygen can be recorded for a period of time. If the requirements are met, the experiment can be continued.

In the smog generating device, the combustion exhaust gas generating device 2 includes a stainless steel shell and an electric ignition device connected to the stainless steel shell, an air input pipeline 4-4, an exhaust gas output pipeline and a combustion chamber arranged inside the stainless steel shell, and an electric ignition device. It is used to energize and heat the combustion chamber so that the temperature of the combustibles in the combustion chamber reaches the ignition point, and then burns to generate combustion exhaust gas; the air input pipe 4-4 is used to increase oxygen and generate positive pressure; the exterior of the combustion exhaust gas generating device 2 is also provided with Gas condensing and drying pipe 6, one end of the gas condensing and drying pipe 6 communicates with the combustion exhaust gas generating device 2, and the other end communicates with the combustion exhaust gas conveying pipeline for reducing temperature and humidity.

The powder aerosol generating device in the haze generating device 5, the ultrasonic water mist aerosol generating device 4, the gas source purification device is installed at the air inlet of the combustion exhaust gas generating device 2, to prevent the outside air from interfering with the experiment, and the air flow control is installed at the air outlet A flow-controllable solenoid valve can be selected on the outlet pipe of the air pump 1 to control the flow of air generated by the air pump 1 .

The ultrasonic water mist aerosol generating device 4 has an ultrasonic transducer that can atomize the liquid to form a water mist aerosol, and the positive pressure formed by injecting air pushes the water mist aerosol into the haze component aging device 7.

The powder aerosol generating device 5 injects the air flow and mixes the powder particles and air into a solid-air fluid through fluidization to form a powder aerosol, and pushes the water mist aerosol into the smog component aging device 7 under positive pressure.

The haze component aging device 7 in the haze generating device includes an ultraviolet light source 7-2, a gas mixing chamber 7-1, and a pressure stabilizing piston 7-3, which are respectively used for simulating ultraviolet catalysis, aerosol mixing and pressure maintenance. The pressure stabilizing piston 7-3 adjusts the pressure by changing the volume of the gas mixing chamber 7-1, maintains the dynamic balance of the pressure, and balances the internal pressure and the external air pressure. After the haze composition aging device 7 mixes each aerosol, it is irradiated with an ultraviolet light source, and the aging pushes the pressure stabilizing piston 7-3 to reduce the volume of the haze composition aging device 7 and increase the size of the haze composition aging device 7 pressure, so that the gas in the aging device is injected into the poisoning device 10 in the smog simulated environment.

The smog simulated environment poison exposure device 10 is a circular platform-shaped tank made of plexiglass, which is transparent and observable. The lower one-sixth place is provided with an animal activity compartment. Excreta can fall on the bottom layer through the wire mesh, and the animal activity compartment is also equipped with a feed box, a water feeder and a temperature and humidity monitor. The outer wall of the tank is connected to the smog composition aging device 7; The sampling tubes 3 are evenly distributed in the poisoning device 10 in the smog simulated environment.

The gas sampling pipe 3 in the smog detection device is connected with the gas collector 8 through the gas detection pipeline, and the gas in the smog simulation environment poisoning device 10 is imported into the air quality detector 9 through the gas collector 8, so that the smog can be realized. For real-time detection of haze gas quality, a solenoid valve that can control the opening and closing is installed on the detection gas delivery pipeline.

The piston of the gas collector 8 moves down first when sampling, and the cavity of the gas collection chamber generates negative pressure. The gas in the haze simulated environment poisoning device 10 flows into the cavity of the gas collection chamber through the gas check valve, and then the piston moves up. , the gas collection cavity generates a positive pressure, due to the effect of the gas check valve, the gas cannot flow back, and flows out to the air quality detector 9 through another check valve, thereby completing the timing and quantitative sampling of the haze gas; the air quality detector 9 The outlet is provided with a purifier, which is used to purify the detected gas or waste gas and discharge it, while maintaining the air pressure stability of the smog simulation environment poisoning device 10, which can purify the air, remove excessive carbon dioxide, and toxic waste gas of ammonia to avoid unnecessary Necessary experimental error.

The core of the computer signal interactive feedback control device is the PLC industrial control module, and its main functions are: to collect smog gas quality information through the air quality detector 9, to control the normal operation of the solenoid valves on each pipeline, and to feed back the operating conditions of the computer system, experimental data, etc. , receiving computer instructions to modify control parameters.

A kind of haze environment simulation device for experimental animals of the present invention has the following advantages:

1) A smog environment simulation device for experimental animals of the present invention, through a powder aerosol generating device, an ultrasonic water mist aerosol generating device, a combustion exhaust gas generating device and a haze component aging device, there is no interference effect between each reaction device, Simulate the composition of the haze from the source of the haze, so that the simulated haze environment is closer to the real haze, and use the haze composition aging device to simulate the transformation and transformation of the interaction of the haze in the atmosphere;

2) A haze environment simulation device for experimental animals of the present invention is provided with some evenly distributed gas sampling tubes on the wall surface of the simulated haze environment. Collector, so as to measure the haze characteristic parameters of different parts of the haze simulation environment, such as: temperature and humidity, and the size, quantity, concentration, etc. of haze particles, which can better reflect the real haze characteristics;

3) A smog environment simulation device for experimental animals of the present invention, through the smog detection device, utilizes the air quality detector to include a gas collector connected to the gas sampling pipe, and can regularly check the smog in the smog simulation environment poisoning device. Haze, real-time detection;

4) A haze environment simulation device for experimental animals of the present invention collects all simulated mixed gases and emissions into a stable container through the haze composition aging device, and the haze composition aging device is based on the method that is beneficial to the simulation The gas or mixture is fully and evenly mixed and distributed in a geometric shape, such as a cylinder, a sphere, or a hemisphere, etc. The size of the cavity can be designed according to the gas discharge of the smog generating device;

5) A kind of haze environment simulation device for experimental animals of the present invention, the on-off time of the electromagnetic valve of the haze detection device and the interval time measured by the air quality detector can be set on the computer, wherein the electromagnetic valve is controlled by the computer through the PLC Industrial control module control; through the PLC industrial control module to control the electric piston of the gas collector to extract the haze gas and send it to the air quality detector for detection, the detection results are fed back in real time, and the computer automatically records and analyzes and draws relevant images, the operating system is visualized, and human-computer interaction in good condition;

6) A smog environment simulation device for experimental animals of the present invention can add fine particle dust of different particle sizes and types to the powder aerosol generating device, and the ultrasonic water mist aerosol generating device can add different solutions, and select different solutions according to the properties of the solutions. Materials; choose different combustion materials in the combustion exhaust gas generating device, such as fossil fuels, artificial synthetic fuels, shredded tobacco, chemical products, etc.

Claims (6)

1. A smog environment simulation device for experimental animals, characterized in that it comprises a smog generation device, a smog simulation environment poisoning device (10) and a smog detection device connected successively, and the smog detection device passes through a wire Connected with a computer signal interactive feedback control device, the haze detection device includes a gas sampling tube (3), one end of the gas sampling tube (3) communicates with the haze simulated environment poisoning device (10), the gas sampling The other end of the pipe (3) is connected to a gas collector (8), and the gas collector (8) is connected to an air quality detector (9) through a pipeline, and the air quality detector (9) is connected to the Computer signal interactive feedback control device connection; The haze generation device includes a haze component aging device (7), a powder aerosol generation device (5), an ultrasonic water mist aerosol generation device (4) and a combustion exhaust gas generation device (2). The powder aerosol generation device The outlets of the device (5), the ultrasonic water mist aerosol generating device (4) and the combustion exhaust gas generating device (2) are respectively kept in communication with the haze component aging device (7) through pipelines, and the mist The haze generating device also includes an air pump (1), and the air outlet of the air pump (1) is connected to the powder aerosol generating device (5), the ultrasonic water mist aerosol generating device (4) and the The air inlet of the combustion exhaust gas generating device (2) is connected, and the haze component aging device (7) is connected with the haze simulated environment poisoning device (10) through a pipeline; the powder aerosol generating device (5 ), the ultrasonic water mist aerosol generating device (4) and the air inlet of the combustion exhaust gas generating device (2) are equipped with a gas source purification device; the powder aerosol generating device (5), the ultrasonic water mist aerosol generating device ( 4) and the gas outlet of the combustion exhaust gas generating device (2) are equipped with electromagnetic valves to control the flow rate, the powder aerosol generating device (5), the ultrasonic water mist aerosol generating device (4) and the combustion exhaust gas generating device (2) ) The pipelines communicating with the smog component aging device (7) are provided with electromagnetic valves for controlling opening and closing; The ultrasonic water mist aerosol generating device (4) includes an ultrasonic water mist aerosol generating device housing (4-1), and the ultrasonic water mist aerosol generating device housing (4-1) is internally provided with an ultrasonic nebulizer (4-2 ), the ultrasonic atomizer (4-2) is provided with a feeding pipe (4-3), one end of the feeding pipe (4-3) communicates with the ultrasonic atomizer (4-2), and the feeding The other end of the pipe (4-3) passes through the casing (4-1) of the ultrasonic water mist aerosol generating device, and the casing (4-1) of the ultrasonic water mist aerosol generating device is connected with an air input pipe (4-4), The housing (4-1) of the ultrasonic water mist aerosol generating device communicates with the air outlet of the air pump (1) through the air input pipe (4-4), and the housing (4-1) of the ultrasonic water mist aerosol generating device is also connected to There is an aerosol output pipeline (4-5), and the shell (4-1) of the ultrasonic water mist aerosol generating device communicates with the haze component aging device (7) through the aerosol output pipeline (4-5); The powder aerosol generating device (5) includes a powder fluidization bottle (5-1), and the side wall of the powder fluidization bottle (5-1) is provided with a powder aerosol output pipe (5-2) , one end of the powder aerosol output pipeline (5-2) is connected to the powder fluidization bottle (5-1), and the other end of the powder aerosol output pipeline (5-2) is connected to an aerosol dilution bottle ( 5-3), the end of the powder aerosol output pipeline (5-2) is located in the aerosol dilution bottle (5-3), and the powder aerosol output pipeline (5-2) is located in the aerosol dilution bottle ( 5-3) is provided with a cap (5-4) at the inner end, the cap (5-4) is provided with a through hole, and the outer wall of the aerosol dilution bottle (5-3) is also provided with a low concentration The aerosol outlet (5-5), the low-concentration aerosol outlet (5-5) communicates with the smog component aging device (7) through a pipeline, and the inside of the powder fluidized bottle (5-1) A gas impingement tube (5-6) is vertically provided, the diameter of the top opening of the gas impingement tube (5-6) is not smaller than the diameter of the bottom opening, and the top port of the gas impingement tube (5-6) passes through the pipe Pass through the outer wall of the powder fluidized bottle (5-1) and communicate with the air outlet of the air pump (1). 2. A smog environment simulation device for experimental animals according to claim 1, characterized in that the combustion exhaust gas generating device (2) includes a housing, and an electric ignition device is provided on the inner wall of the housing, so that A combustion chamber is also provided inside the housing, and a gas condensation drying pipe (6) is provided on the outer wall of the housing, and the gas condensation drying pipe (6) includes a horizontally placed pipe body (6-1). One end of the pipe body (6-1) is provided with a combustion exhaust gas inlet (6-2), and the combustion exhaust gas inlet (6-2) communicates with the shell through a pipe, and the pipe body (6-1) The other end is provided with a combustion exhaust gas outlet (6-3), the combustion exhaust gas outlet (6-3) communicates with the smog composition aging device (7) through a pipe, and the outer wall of the pipe body (6-1) The top of the tube body (6-1) is provided with a semiconductor cooling chip (6-5), and the bottom of the tube body (6-1) is provided with a condensate drain pipe (6-4). 3. A haze environment simulation device for experimental animals according to claim 1, characterized in that, the haze component aging device (7) includes a gas mixing cavity (7-1), and the gas mixing An ultraviolet light source (7-2) is provided on the inner wall of the cavity (7-1), and a pressure stabilizing piston (7-3) is also provided on the inner wall of the gas mixing cavity (7-1), and the gas mixing cavity (7-1) Through the pipeline, respectively connect with the smog simulated environment poisoning device (10), the combustion exhaust gas outlet (6-3), the low-concentration aerosol outlet (5-5) and the ultrasonic water mist aerosol generating device The shell (4-1) is connected. 4. A haze environment simulation device for experimental animals according to claim 3, characterized in that, the haze simulated environment exposure device (10) comprises a tank body, and the inside of the tank body is horizontally arranged The interlayer is also provided with a temperature and humidity monitor; the gas sampling tube (3) is a pipe with one end closed, and the closed end of the gas sampling tube (3) is located in the tank. The other end of the gas sampling pipe (3) communicates with the gas collector (8), and a number of air inlet holes (3-1) are opened on the side wall of the gas sampling pipe (3), and the air inlet The through holes (3-1) are all located in the tank body. 5. A smog environment simulation device for experimental animals according to claim 4, characterized in that, the pipeline connecting the gas collector (8) with the air quality detector (9) is also equipped with An electromagnetic valve that controls the opening and closing, and the air outlet of the air quality detector (9) is also provided with a gas purifier. 6. a kind of laboratory animal according to claim 5 uses haze environment simulation device, it is characterized in that, described computer signal interactive feedback control device comprises computer, and described computer is connected with PLC industrial control module by wire, and described PLC The industrial control module is also connected with the solenoid valve for controlling flow and the solenoid valve for controlling opening and closing respectively through wires.

Images