CN107374585B - Haze environment simulation device for experimental animals - Google Patents
Haze environment simulation device for experimental animals Download PDFInfo
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- CN107374585B CN107374585B CN201710514139.1A CN201710514139A CN107374585B CN 107374585 B CN107374585 B CN 107374585B CN 201710514139 A CN201710514139 A CN 201710514139A CN 107374585 B CN107374585 B CN 107374585B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2226—Sampling from a closed space, e.g. food package, head space
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/10—Investigating individual particles
Abstract
The invention discloses a haze environment simulation device for experimental animals, which comprises a haze generation device, a haze simulation environment contamination device and a haze detection device which are sequentially communicated, wherein the haze detection device is connected with a computer signal interaction feedback control device through a wire, the haze detection device comprises a gas sampling tube, one end of the gas sampling tube is communicated with the haze simulation environment contamination device, the other end of the gas sampling tube is connected with a gas collector, the gas collector is also connected with an atmosphere quality detector through a pipeline, and the atmosphere quality detector is connected with the computer signal interaction feedback control device through the wire. The invention can simulate weather and pollution conditions of haze weather, such as: the device designed can produce haze environments with adjustable degree and controllable conditions, and is used for simulating long-period and severe haze environments and relevant animal experiments.
Description
Technical Field
The invention belongs to the technical field of atmospheric environment research equipment, and particularly relates to a haze environment simulation device for experimental animals.
Background
In recent years, the weather of haze frequently occurs, and the haze contains hundreds of particulate matters which are used as a gas, solid and liquid multiphase body, so that diseases of respiratory system, cardiovascular system, blood system, reproductive system and the like can be induced under the condition that people have no precaution, and the health of people is seriously endangered. The preparation of an effective haze environment simulation device is necessary to further study the influence rule and process of the haze environment on production and life. However, most of the existing haze simulation devices are large-scale equipment for researching microscopic field changes such as molecular reactions and photochemical actions in the atmosphere, and small haze environment simulation devices for animal experiments are few in variety, simple in function and inaccurate in data.
The chinese patent application No. 2016100308882 discloses a haze environment simulation and monitoring device, the device is divided into two boxes, the middle of which is separated by a wood board and a wire netting, and one box is burned to generate solid particulate aerosol and then the aerosol is led to the other box. The device has the advantages of ideal integral composition, simple components, incapability of approaching the haze state of real complex components, poor survival condition of experimental animals, more interference factors, inaccurate experimental data and the like.
Disclosure of Invention
The invention aims to provide a haze environment simulation device for experimental animals, which can be used for preparing a stable and controllable haze environment reflecting the characteristics of real haze complex components, and simultaneously providing a good living environment for the experimental animals and reducing interference factors.
The technical scheme adopted by the invention is as follows: the utility model provides a haze environment simulation device for experimental animals, including the haze that communicates in proper order produces device, haze simulated environment contamination device and haze detection device, haze detection device has computer signal interaction feedback control device through wire connection, and haze detection device includes the gas sampling pipe, and the one end and the haze simulated environment contamination device of gas sampling pipe communicate, and the other end of gas sampling pipe is connected with gas collector, and gas collector has atmospheric quality detector through the pipe connection, atmospheric quality detector pass through the wire with computer signal interaction feedback control device connects.
The present invention is also characterized in that,
the haze generating device comprises a haze component aging device, a powder aerosol generating device, an ultrasonic water mist aerosol generating device and a combustion waste gas generating device, wherein air outlets of the powder aerosol generating device, the ultrasonic water mist aerosol generating device and the combustion waste gas generating device are respectively communicated with the haze component aging device through pipelines; the air inlets of the powder aerosol generating device, the ultrasonic water mist aerosol generating device and the combustion waste gas generating device are respectively provided with an air source purifying device; the powder aerosol generating device, the ultrasonic water mist aerosol generating device and the combustion waste gas generating device are respectively provided with electromagnetic valves for controlling flow at the air outlets, and the pipelines respectively communicated with the haze component ageing device are provided with electromagnetic valves for controlling opening and closing.
The combustion waste gas generating device comprises a shell, an electric heating ignition device is arranged on the inner wall of the shell, a combustion cavity is further arranged in the shell, a gas condensation drying pipe is further arranged on the outer wall of the shell, the gas condensation drying pipe comprises a pipe body which is horizontally placed, one end of the pipe body is provided with a combustion waste gas inlet, the combustion waste gas inlet is communicated with the shell through a pipeline, the other end of the pipe body is provided with a combustion waste gas outlet, the combustion waste gas outlet is communicated with a haze component ageing device through a pipeline, a semiconductor refrigerating sheet is arranged at the top of the outer wall of the pipe body, and a condensate liquid discharging pipe is arranged at the bottom of the pipe body.
The ultrasonic water mist aerosol generating device comprises an ultrasonic water mist aerosol generating device shell, an ultrasonic atomizer is arranged inside the ultrasonic water mist aerosol generating device shell, a feeding pipeline is arranged on the ultrasonic atomizer, one end of the feeding pipeline is communicated with the ultrasonic atomizer, the other end of the feeding pipeline penetrates through the ultrasonic water mist aerosol generating device shell, an air input pipeline is connected to the ultrasonic water mist aerosol generating device shell, the ultrasonic water mist aerosol generating device shell is communicated with an air outlet of an air pump through the air input pipeline, an aerosol output pipeline is further connected to the ultrasonic water mist aerosol generating device shell, and the ultrasonic water mist aerosol generating device shell is communicated with the haze component aging device through the aerosol output pipeline.
The powder aerosol generating device comprises a powder fluidization bottle, a powder aerosol output pipeline is arranged on the side wall of the powder fluidization bottle, one end of the powder aerosol output pipeline is communicated with the powder fluidization bottle, the other end of the powder aerosol output pipeline is connected with an aerosol dilution bottle, the end part of the powder aerosol output pipeline is positioned in the aerosol dilution bottle, a cap is arranged at the end part of the powder aerosol output pipeline positioned in the aerosol dilution bottle, a through hole is formed in the cap, a low-concentration aerosol air outlet is further formed in the outer wall of the aerosol dilution bottle and is communicated with a haze component ageing device through a pipeline, a gas impact pipe is vertically arranged in the powder fluidization bottle, the diameter of the top opening of the gas impact pipe is not smaller than that of the bottom opening, and the top port of the gas impact pipe penetrates through the outer wall of the powder fluidization bottle through the pipeline and is communicated with the air outlet of an air pump.
The haze component aging device comprises a gas mixing cavity, an ultraviolet light source is arranged on the inner wall of the gas mixing cavity, a pressure stabilizing piston is further arranged on the inner wall of the gas mixing cavity, and the gas mixing cavity is respectively communicated with the haze simulation environment contamination device, the combustion waste gas outlet, the low-concentration aerosol outlet and the ultrasonic water mist aerosol generating device shell through pipelines.
The haze simulation environment contamination device comprises a tank body, wherein an interlayer is arranged in the tank body along the horizontal direction, and a temperature and humidity monitor is further arranged on the interlayer; the gas sampling tube is a pipeline with one end closed, the closed end of the gas sampling tube is positioned in the tank body, the other end of the gas sampling tube is communicated with the gas collector, a plurality of air inlet through holes are formed in the side wall of the gas sampling tube, and the air inlet through holes are all positioned in the tank body.
The pipeline that the gas collector is linked together with the atmospheric quality detector is also equipped with the solenoid valve of control and opens and close, and the gas outlet of atmospheric quality detector still is equipped with the gas purifier.
The computer signal interaction feedback control device comprises a computer, wherein the computer is connected with a PLC industrial control module through a wire, and the PLC industrial control module is also connected with an electromagnetic valve for controlling flow and an electromagnetic valve for controlling opening and closing through wires respectively.
The beneficial effects of the invention are as follows:
1) According to the haze environment simulation device for experimental animals, through the powder aerosol generating device, the ultrasonic water aerosol generating device, the combustion waste gas generating device and the haze component aging device, interference influence among all the reaction devices is avoided, the components of haze are simulated from the source of the haze, the simulated haze environment is close to real haze, and the interaction transformation and conversion of the haze in the atmosphere are simulated by adopting the haze component aging device;
2) According to the haze environment simulation device for experimental animals, the wall surface of the haze simulation environment is provided with the plurality of gas sampling pipes which are uniformly distributed, the gas sampling pipes can be provided with different angles and different depths, and meanwhile, the piston gas collector is arranged, so that haze characteristic parameters of different parts of a contaminated area of the haze simulation environment are measured, for example: the size, the number, the concentration and the like of the temperature, the humidity, the haze particles can reflect the real haze characteristics;
3) According to the haze environment simulation device for experimental animals, through the haze detection device, the haze in the haze environment simulation environment contamination device can be timely and selectively detected by utilizing the air quality detector comprising the gas collector communicated with the gas sampling tube, so that real-time detection can be performed;
4) The invention relates to a haze environment simulation device for experimental animals, which is characterized in that all simulated mixed gases and emissions are collected into a stable container through a haze component aging device, wherein the haze component aging device is designed according to geometric shapes which are favorable for fully and uniformly mixing and distributing the simulated gases or the mixture, such as a cylinder, a sphere, a hemisphere or the like, and the size of a cavity can be designed according to the gas discharge amount of a haze generating device;
5) According to the haze environment simulation device for the experimental animal, the on-off time of the electromagnetic valve of the haze detection device and the interval time measured by the atmospheric quality detector can be set on a computer, wherein the electromagnetic valve is controlled by the computer through the PLC industrial control module; the PLC industrial control module is used for controlling the electric piston of the gas collector to extract haze gas and convey the haze gas to the atmosphere quality detector for detection, the detection result is fed back in real time, a computer automatically records, analyzes and draws related images, an operating system is visualized, and the human-computer interaction condition is good;
6) According to the haze environment simulation device for experimental animals, fine particle dust with different particle sizes and types can be added into the powder aerosol generating device, different solutions can be added into the ultrasonic water mist aerosol generating device, and different materials are selected according to different solution properties; different combustion materials are selected in the combustion waste gas generating device, such as fossil fuel, artificial synthetic fuel, tobacco shred, chemical products and the like.
Drawings
FIG. 1 is a schematic structural diagram of a haze environment simulation device for experimental animals;
FIG. 2 is a schematic structural diagram of a gas sampling tube in the haze environment simulation device for experimental animals;
FIG. 3 is a schematic structural view of an ultrasonic water mist aerosol generating device in a haze environment simulation device for experimental animals;
fig. 4 is a schematic structural diagram of a powder aerosol generating device in the experimental animal haze environment simulation device;
FIG. 5 is a schematic diagram of a structure of a gas condensation drying pipe in the experimental animal haze environment simulation device;
fig. 6 is a schematic diagram of a haze component aging device in a haze environment simulation device for experimental animals.
In the figure, an air pump, a combustion exhaust gas generating device, a gas sampling pipe, an ultrasonic water mist aerosol generating device, a powder aerosol generating device, a gas condensation drying pipe, a haze component aging device, a gas collector, an atmosphere quality detector and a haze simulated environment contamination device are respectively arranged in the figure, wherein the air pump, the combustion exhaust gas generating device, the gas sampling pipe, the ultrasonic water mist aerosol generating device, the powder aerosol generating device, the gas condensation drying pipe, the haze component aging device, the gas collector, the atmosphere quality detector and the haze simulated environment contamination device are respectively arranged in the figure, the air pump, the combustion exhaust gas generating device, the gas sampling pipe, the ultrasonic water mist aerosol generating device, the powder aerosol generating device, the gas condensation drying pipe, the haze component aging device, the gas collector, the atmosphere quality detector, the haze simulated environment contamination device and the haze simulated environment contamination device are respectively arranged in the figure.
3-1, an air inlet through hole;
4-1, an outer shell of an ultrasonic water mist aerosol generating device, 4-2, an ultrasonic atomizer, 4-3, a feeding pipeline, 4-4, an air input pipeline and 4-5, an aerosol output pipeline;
5-1 parts of a powder fluidization bottle, 5-2 parts of a powder aerosol output pipeline, 5-3 parts of an aerosol dilution bottle, 5-4 parts of a cap, 5-5 parts of a low-concentration aerosol air outlet and 5-6 parts of an air impact pipe;
6-1 parts of a pipe body, 6-2 parts of a combustion waste gas inlet, 6-3 parts of a combustion waste gas outlet, 6-4 parts of a condensate liquid discharge pipe and 6-5 parts of a semiconductor refrigerating sheet;
7-1, 7-2, 7-3, a pressure stabilizing piston.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description.
The invention discloses a haze environment simulation device for experimental animals, which is shown in fig. 1 and comprises a haze generating device, a haze simulation environment contamination device 10 and a haze detection device which are sequentially communicated, wherein the haze detection device is connected with a computer signal interaction feedback control device through a wire, the haze detection device comprises a gas sampling tube 3, one end of the gas sampling tube 3 is communicated with the haze simulation environment contamination device 10, the other end of the gas sampling tube 3 is connected with a gas collector 8, the gas collector 8 is connected with an atmosphere quality detector 9 through a pipeline, and the atmosphere quality detector 9 is connected with the computer signal interaction feedback control device through the wire.
The haze generating device comprises a haze component ageing device 7, a powder aerosol generating device 5, an ultrasonic water mist aerosol generating device 4 and a combustion waste gas generating device 2, wherein air outlets of the powder aerosol generating device 5, the ultrasonic water mist aerosol generating device 4 and the combustion waste gas generating device 2 are respectively communicated with the haze component ageing device 7 through pipelines, the haze generating device also comprises an air pump 1, an air outlet of the air pump 1 is respectively communicated with air inlets of the powder aerosol generating device 5, the ultrasonic water mist aerosol generating device 4 and the combustion waste gas generating device 2 through pipelines, and the haze component ageing device 7 is communicated with the haze simulation environment contamination device 10 through pipelines; the powder aerosol generating device 5, the ultrasonic water mist aerosol generating device 4 and the air inlet of the combustion waste gas generating device 2 are respectively provided with an air source purifying device; the powder aerosol generating device 5, the ultrasonic water mist aerosol generating device 4 and the combustion waste gas generating device 2 are respectively provided with electromagnetic valves for controlling flow, and the pipelines of the powder aerosol generating device 5, the ultrasonic water mist aerosol generating device 4 and the combustion waste gas generating device 2, which are respectively communicated with the haze component ageing device 7, are respectively provided with electromagnetic valves for controlling opening and closing.
The combustion waste gas generating device 2 comprises a shell, an electric heating ignition device is arranged on the inner wall of the shell, a combustion cavity is further arranged in the shell, a gas condensation drying pipe 6 is further arranged on the outer wall of the shell, the gas condensation drying pipe 6 comprises a pipe body 6-1 which is horizontally arranged, one end of the pipe body 6-1 is provided with a combustion waste gas inlet 6-2, the combustion waste gas inlet 6-2 is communicated with the shell through a pipeline, the other end of the pipe body 6-1 is provided with a combustion waste gas outlet 6-3, the combustion waste gas outlet 6-3 is communicated with a haze component ageing device 7 through a pipeline, the top of the outer wall of the pipe body 6-1 is provided with a semiconductor refrigerating sheet 6-5, and the bottom of the pipe body 6-1 is provided with a condensate liquid draining pipe 6-4.
The ultrasonic water mist aerosol generating device 4 comprises an ultrasonic water mist aerosol generating device shell 4-1, an ultrasonic atomizer 4-2 is arranged inside the ultrasonic water mist aerosol generating device shell 4-1, and the ultrasonic atomizer 4-2 uses a piezoelectric ultrasonic transducer and has brand names: YADU/Addu, model AW0509 is equipped with feeding pipeline 4-3 on the ultrasonic atomizer 4-2, feeding pipeline 4-3's one end and ultrasonic atomizer 4-2 intercommunication, feeding pipeline 4-3's the other end passes ultrasonic wave water smoke aerosol generating device shell 4-1, be connected with air input pipeline 4-4 on the ultrasonic wave water smoke aerosol generating device shell 4-1, ultrasonic wave water smoke aerosol generating device shell 4-1 communicates with air pump 1's gas outlet through air input pipeline 4-4, ultrasonic wave water smoke aerosol generating device shell 4-1 still is connected with aerosol output pipeline 4-5, ultrasonic wave water smoke aerosol generating device shell 4-1 communicates with haze composition ageing ware 7 through aerosol output pipeline 4-5.
The powder aerosol generating device 5 comprises a powder fluidization bottle 5-1, wherein the powder fluidization bottle 5-1 adopts 3400A fluidized bed of TSI company in the United states, a powder aerosol output pipeline 5-2 is arranged on the side wall of the powder fluidization bottle 5-1, one end of the powder aerosol output pipeline 5-2 is communicated with the powder fluidization bottle 5-1, the other end of the powder aerosol output pipeline 5-2 is connected with an aerosol dilution bottle 5-3, the end part of the powder aerosol output pipeline 5-2 is positioned in the aerosol dilution bottle 5-3, a cap 5-4 is arranged at the end part of the powder aerosol output pipeline 5-2 positioned in the aerosol dilution bottle 5-3, a through hole is formed in the cap 5-4, a low-concentration aerosol air outlet 5-5 is further formed in the outer wall of the aerosol dilution bottle 5-3, the low-concentration aerosol air outlet 5-5 is communicated with a haze component aging device 7 through a pipeline, a gas impact pipe 5-6 is vertically arranged in the powder fluidization bottle 5-1, the gas impact pipe 5-6 is a gradually-thinned pipe, the diameter of an opening at the top of the gas pump 5-6 is not smaller than the diameter of the bottom of the opening of the gas pump 5-6, and the diameter of the top opening of the gas pump is not smaller than the diameter of the opening of the gas pump 5-6, and the diameter of the gas pump is communicated with the gas outlet through the port 5-1.
The haze component aging device 7 comprises a gas mixing cavity 7-1, an ultraviolet light source 7-2 is arranged on the inner wall of the gas mixing cavity 7-1, a pressure stabilizing piston 7-3 is further arranged on the inner wall of the gas mixing cavity 7-1, the pressure stabilizing piston 7-3 is a low-resistance piston, the volume can be automatically changed according to pressure, and the gas mixing cavity 7-1 is respectively communicated with a haze simulation environment contamination device 10, a combustion waste gas outlet 6-3, a low-concentration aerosol outlet 5-5 and an ultrasonic water mist aerosol generating device shell 4-1 through pipelines.
The haze simulation environment contamination device 10 comprises a tank body, wherein an interlayer is arranged in the tank body along the horizontal direction, and a temperature and humidity monitor is further arranged on the interlayer; the gas sampling tube 3 is a pipeline with one end closed, the end of the gas sampling tube 3 is positioned in the tank body, the other end of the gas sampling tube 3 is communicated with the gas collector 8, the side wall of the gas sampling tube 3 is provided with a plurality of air inlet through holes 3-1, and the air inlet through holes 3-1 are all positioned in the tank body.
The pipeline that the gas collector 8 is linked together with the atmospheric quality detector 9 is also equipped with the solenoid valve of control and opens and close, and the gas outlet of atmospheric quality detector 9 still is equipped with the gas purifier, and the gas purifier is a glass pipe middle packing gas filtering's medicine.
The gas collector 8 comprises a cylindrical gas collecting cavity, openings are formed in two opposite side walls of the gas collecting cavity, the gas collecting cavity is connected with pipelines through the two openings respectively, a gas one-way valve is arranged on each pipeline, a piston is further vertically arranged in the gas collecting cavity and controlled by a motor, the openings in the two side walls of the gas collecting cavity are respectively communicated with the first gas sampling pipe 3 and the air quality detector 9 through the pipelines, and the air quality detector 9 is of the type BASIC-5 of BUCK in the United states.
The computer signal interaction feedback control device comprises a computer, wherein the computer is connected with a PLC industrial control module through a wire, and the PLC industrial control module is also connected with an electromagnetic valve for controlling flow and an electromagnetic valve for controlling opening and closing through wires respectively.
When in use, as shown in fig. 1, a powder aerosol generating device 5, an ultrasonic water mist aerosol generating device 4 and a combustion waste gas generating device 2 in the haze generating device are respectively communicated with a haze component aging device 7 through a powder aerosol gas conveying pipeline, a water mist aerosol gas conveying pipeline and a combustion waste gas conveying pipeline, solenoid valves capable of controlling on and off are respectively arranged on the gas conveying pipelines, the haze component aging device 7 is communicated with a haze mold environment contamination device through a haze gas conveying pipeline, and an air pump 1 is also arranged in the haze generating device, and oxygen required by combustion is provided for the combustion waste gas generating device 2 through the air pump 1; generating positive pressure by the air pump 1, and utilizing the positive pressure to discharge the powder aerosol generated by the powder aerosol generating device 5, the water mist aerosol generated by the ultrasonic water mist aerosol generating device 4 and the aerosol containing solid particles generated by the combustion waste gas generating device 2 into the haze component aging device 7; before the device is used for carrying out animal experiments, the device is started firstly, the haze generating device is firstly opened to preheat for 20 minutes, then the atmosphere quality detector 9 is started to monitor generated haze, whether data of haze gas accord with experimental indexes or not is compared, and if the data do not accord with experimental standards, relevant parts are required to be regulated for regulation. And (3) keeping the device running for 6-10 minutes when the data of the haze gas accords with the experimental index or accords with the experimental index after adjustment, recording the data of the haze gas, observing whether the fluctuation range of the data accords with the experimental requirement, and putting the haze gas into the experimental animal after the fluctuation range accords with the experimental requirement. Putting into the experimental animal can open the gas purifying device, recording the ratio of carbon dioxide to oxygen in a period of time, and if the ratio meets the requirement, continuing the experiment.
In the haze generating device, the combustion waste gas generating device 2 comprises a stainless steel shell, an electric heating ignition device connected with the stainless steel shell, an air input pipeline 4-4, a waste gas output pipeline and a combustion cavity arranged in the stainless steel shell, wherein the electric heating ignition device is used for electrifying and heating the combustion cavity so that the temperature of combustible materials in the combustion cavity reaches a combustion point, and then combustion waste gas is generated by combustion; the air input pipeline 4-4 is used for increasing oxygen to generate positive pressure; the outside of the combustion exhaust gas generating device 2 is also provided with a gas condensation drying pipe 6, one end of the gas condensation drying pipe 6 is communicated with the combustion exhaust gas generating device 2, and the other end of the gas condensation drying pipe is communicated with a combustion exhaust gas conveying pipeline for reducing temperature and humidity.
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 in the haze generating device are provided with air source purifying devices, so that the interference of outside air to experiments is prevented, the air outlet is provided with an air flow controller, and a solenoid valve with controllable flow can be selectively used on an outlet pipeline of the air pump 1 so as to control the flow of air generated by the air pump 1.
The ultrasonic water mist aerosol generating device 4 is provided with an ultrasonic transducer which can atomize liquid to form water mist aerosol, and the positive pressure formed by injecting air pushes the water mist aerosol to be injected into the haze component aging device 7.
The powder aerosol generating device 5 mixes powder particles with air into a solid-gas fluid by fluidization by the injected air flow to form powder aerosol, and the positive pressure pushes the water aerosol to be injected into the haze component aging device 7.
The haze component aging device 7 in the haze generating device comprises an ultraviolet light source 7-2, a gas mixing cavity 7-1 and a pressure stabilizing piston 7-3, and the pressure stabilizing piston is used for simulating ultraviolet catalysis, aerosol mixing and pressure maintenance respectively. The pressure stabilizing piston 7-3 adjusts the pressure by changing the volume of the gas mixing cavity 7-1, maintains the dynamic balance of the pressure, and balances the internal pressure with the external air pressure. After the aerosol component ageing devices 7 are mixed with each other, the aerosol component ageing devices 7 are irradiated by ultraviolet light sources, ageing is conducted to push the pressure stabilizing piston 7-3, the volume of the aerosol component ageing devices 7 is reduced, the pressure in the aerosol component ageing devices 7 is increased, and gas in the ageing devices is injected into the haze simulation environment contamination device 10.
The haze simulation environment contamination device 10 is a round table-shaped tank body, is composed of organic glass, is transparent and observable, is provided with an animal movable interlayer at one sixth of the lower part, is composed of fine iron wire meshes and can be used for placing padding, animal excreta can fall on the bottom layer in the iron wire meshes, and is also provided with a feed box, a water feeder and a temperature and humidity monitor, and the outer wall of the tank body is communicated with a haze component aging device 7; the tank body is communicated with a plurality of gas sampling pipes 3, and the gas sampling pipes 3 are uniformly distributed in the haze simulation environment contamination device 10.
The gas sampling pipe 3 in the haze detection device is communicated with the gas collector 8 through the gas detection pipeline, the gas in the haze simulation environment contamination device 10 is converged into the atmosphere quality detector 9 through the gas collector 8, the real-time detection of the haze gas quality can be realized, and the electromagnetic valve capable of controlling the opening and closing is arranged on the detection gas conveying pipeline.
The piston moves downwards firstly when the gas collector 8 samples, the cavity of the gas collection cavity generates negative pressure, the gas in the haze simulation environment contamination device 10 flows into the cavity of the gas collection cavity through the gas one-way valve, the rear piston moves upwards, the gas collection cavity generates positive pressure, and the gas cannot flow back due to the action of the gas one-way valve and flows out to the atmosphere quality detector 9 through the other one-way valve, so that the haze gas is sampled quantitatively at fixed time; the air quality detector 9 export is provided with the clarifier for discharge after with detecting gas or exhaust gas purification, maintain the atmospheric pressure of haze simulated environment contamination device 10 simultaneously stable, can air-purifying, get rid of too much carbon dioxide, the poisonous waste gas of ammonia, avoid unnecessary experimental error.
The core of the computer signal interaction feedback control device is a PLC industrial control module, and the computer signal interaction feedback control device has the main functions of collecting haze gas quality information through an atmosphere quality detector 9, controlling the normal operation of electromagnetic valves on all pipelines, feeding back the operation condition of a system for a computer, testing data and receiving computer instructions to modify control parameters.
The haze environment simulation device for experimental animals has the following advantages:
1) According to the haze environment simulation device for experimental animals, through the powder aerosol generating device, the ultrasonic water aerosol generating device, the combustion waste gas generating device and the haze component aging device, interference influence among all the reaction devices is avoided, the components of haze are simulated from the source of the haze, the simulated haze environment is close to real haze, and the interaction transformation and conversion of the haze in the atmosphere are simulated by adopting the haze component aging device;
2) According to the haze environment simulation device for experimental animals, the wall surface of the haze simulation environment is provided with the plurality of gas sampling pipes which are uniformly distributed, the gas sampling pipes can be provided with different angles and different depths, and meanwhile, the piston gas collector is arranged, so that haze characteristic parameters of different parts of a contaminated area of the haze simulation environment are measured, for example: the size, the number, the concentration and the like of the temperature, the humidity, the haze particles can reflect the real haze characteristics;
3) According to the haze environment simulation device for experimental animals, through the haze detection device, the haze in the haze environment simulation environment contamination device can be timely and selectively detected by utilizing the air quality detector comprising the gas collector communicated with the gas sampling tube, so that real-time detection can be performed;
4) The invention relates to a haze environment simulation device for experimental animals, which is characterized in that all simulated mixed gases and emissions are collected into a stable container through a haze component aging device, wherein the haze component aging device is designed according to geometric shapes which are favorable for fully and uniformly mixing and distributing the simulated gases or the mixture, such as a cylinder, a sphere, a hemisphere or the like, and the size of a cavity can be designed according to the gas discharge amount of a haze generating device;
5) According to the haze environment simulation device for the experimental animal, the on-off time of the electromagnetic valve of the haze detection device and the interval time measured by the atmospheric quality detector can be set on a computer, wherein the electromagnetic valve is controlled by the computer through the PLC industrial control module; the PLC industrial control module is used for controlling the electric piston of the gas collector to extract haze gas and convey the haze gas to the atmosphere quality detector for detection, the detection result is fed back in real time, a computer automatically records, analyzes and draws related images, an operating system is visualized, and the human-computer interaction condition is good;
6) According to the haze environment simulation device for experimental animals, fine particle dust with different particle sizes and types can be added into the powder aerosol generating device, different solutions can be added into the ultrasonic water mist aerosol generating device, and different materials are selected according to different solution properties; different combustion materials are selected in the combustion waste gas generating device, such as fossil fuel, artificial synthetic fuel, tobacco shred, chemical products and the like.
Claims (6)
1. The utility model provides a haze environment simulation device for experimental animals, its characterized in that, including haze production device, haze simulated environment contamination device (10) and the haze detection device that communicate in proper order, haze detection device is connected with computer signal interaction feedback control device through the wire, haze detection device includes gas sampling tube (3), the one end and the haze simulated environment contamination device (10) intercommunication of gas sampling tube (3), the other end of gas sampling tube (3) is connected with gas collector (8), gas collector (8) have atmospheric quality detector (9) through the pipe connection, atmospheric quality detector (9) pass through the wire with computer signal interaction feedback control device connects;
the haze generating device comprises a haze component ageing device (7), a powder aerosol generating device (5), an ultrasonic water mist aerosol generating device (4) and a combustion waste gas generating device (2), wherein air outlets of the powder aerosol generating device (5), the ultrasonic water mist aerosol generating device (4) and the combustion waste gas generating device (2) are respectively communicated with the haze component ageing device (7) through pipelines, the haze generating device further comprises an air pump (1), and air outlets of the air pump (1) are respectively communicated with the powder aerosol generating device (5), the ultrasonic water mist aerosol generating device (4) and air inlets of the combustion waste gas generating device (2) through pipelines, and the haze component ageing device (7) is communicated with the haze simulation environment contamination device (10) through pipelines; the powder aerosol generating device (5), the ultrasonic water mist aerosol generating device (4) and the combustion waste gas generating device (2) are provided with air source purifying devices at air inlets; the powder aerosol generating device (5), the ultrasonic water mist aerosol generating device (4) and the combustion waste gas generating device (2) are respectively provided with electromagnetic valves for controlling flow, and the pipelines of the powder aerosol generating device (5), the ultrasonic water mist aerosol generating device (4) and the combustion waste gas generating device (2) which are respectively communicated with the haze component ageing device (7) are provided with electromagnetic valves for controlling opening and closing;
the ultrasonic water mist aerosol generating device (4) comprises an ultrasonic water mist aerosol generating device shell (4-1), an ultrasonic atomizer (4-2) is arranged inside the ultrasonic water mist aerosol generating device shell (4-1), a feeding pipeline (4-3) is arranged on the ultrasonic atomizer (4-2), one end of the feeding pipeline (4-3) is communicated with the ultrasonic atomizer (4-2), the other end of the feeding pipeline (4-3) penetrates through the ultrasonic water mist aerosol generating device shell (4-1), an air input pipeline (4-4) is connected to the ultrasonic water mist aerosol generating device shell (4-1), the ultrasonic water mist aerosol generating device shell (4-1) is communicated with an air outlet of an air pump (1) through the air input pipeline (4-4), the ultrasonic water mist aerosol generating device shell (4-1) is further connected with an aerosol output pipeline (4-5), and the ultrasonic water mist aerosol generating device shell (4-1) is communicated with an ageing component (7) through the aerosol output pipeline (4-5);
the powder aerosol generating device (5) comprises a powder fluidization bottle (5-1), a powder aerosol output pipeline (5-2) is arranged on the side wall of the powder fluidization bottle (5-1), one end of the powder aerosol output pipeline (5-2) is communicated with the powder fluidization bottle (5-1), the other end of the powder aerosol output pipeline (5-2) is connected with an aerosol dilution bottle (5-3), the end part of the powder aerosol output pipeline (5-2) is positioned in the aerosol dilution bottle (5-3), a cap (5-4) is arranged at the end part of the powder aerosol output pipeline (5-2) positioned in the aerosol dilution bottle (5-3), a through hole is arranged on the cap (5-4), a low concentration aerosol air outlet (5-5) is further formed in the outer wall of the aerosol dilution bottle (5-3), the low concentration aerosol air outlet (5-5) is communicated with a haze component aging device (7) through the pipeline, the inside the powder fluidization bottle (5-1) is vertically provided with a small-diameter impact tube (5-6) with no impact opening at the top of the small-diameter gas tube (5-6), the top port of the gas impact pipe (5-6) passes through the outer wall of the powder fluidization bottle (5-1) through a pipeline and is communicated with the air outlet of the air pump (1).
2. The haze environment simulation device for experimental animals according to claim 1, wherein the combustion exhaust gas generating device (2) comprises a shell, an electric heating ignition device is arranged on the inner wall of the shell, a combustion cavity is further arranged in the shell, a gas condensation drying pipe (6) is further arranged on the outer wall of the shell, the gas condensation drying pipe (6) comprises 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), the combustion exhaust gas inlet (6-2) is communicated with the shell through a pipeline, the other end of the pipe body (6-1) is provided with a combustion exhaust gas outlet (6-3), the combustion exhaust gas outlet (6-3) is communicated with a haze component aging device (7) through a pipeline, a semiconductor refrigeration sheet (6-5) is arranged on the top of the outer wall of the pipe body (6-1), and a condensate liquid drain pipe (6-4) is arranged at the bottom of the pipe body (6-1).
3. The haze environment simulation device for experimental animals according to claim 1, wherein the haze component aging device (7) comprises a gas mixing cavity (7-1), an ultraviolet light source (7-2) is arranged on the inner wall of the gas mixing cavity (7-1), a pressure stabilizing piston (7-3) is further arranged on the inner wall of the gas mixing cavity (7-1), and the gas mixing cavity (7-1) is respectively communicated with the haze environment simulation contamination device (10), the combustion exhaust gas outlet (6-3), the low concentration aerosol outlet (5-5) and the ultrasonic water mist aerosol generating device shell (4-1) through pipelines.
4. The haze environment simulation device for experimental animals according to claim 3, wherein the haze environment simulation device (10) comprises a tank body, an interlayer is arranged in the tank body along the horizontal direction, and a temperature and humidity monitor is further arranged on the interlayer; the gas sampling tube (3) is a pipeline with one end closed, the end part of the gas sampling tube (3) closed is positioned in the tank body, the other end of the gas sampling tube (3) is communicated with the gas collector (8), a plurality of gas inlet through holes (3-1) are formed in the side wall of the gas sampling tube (3), and the gas inlet through holes (3-1) are all positioned in the tank body.
5. The haze environment simulation device for experimental animals according to claim 4, wherein a solenoid valve for controlling the opening and closing is further arranged on a pipeline which is communicated with the atmosphere quality detector (9) by the gas collector (8), and a gas purifier is further arranged at a gas outlet of the atmosphere quality detector (9).
6. The experimental animal haze environment simulation device according to claim 5, wherein the computer signal interaction feedback control device comprises a computer, the computer is connected with a PLC industrial control module through a wire, and the PLC industrial control module is further connected with an electromagnetic valve for controlling flow and an electromagnetic valve for controlling opening and closing through wires respectively.
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| CN108786938B (en) * | 2018-05-25 | 2021-02-23 | 上海大学 | Haze particle formation simulator |
| CN109813637A (en) * | 2018-12-28 | 2019-05-28 | 复旦大学 | A kind of simulation aerosol systems for testing biomass combustion discharged particle density evolution |
| CN109459536A (en) * | 2018-12-29 | 2019-03-12 | 徐州治鼎环境科技有限公司 | A kind of high humidity low concentration dust generator |
| CN110057984A (en) * | 2019-05-24 | 2019-07-26 | 吉林大学 | A kind of plant air pollution model device and its application method |
| CN110398570A (en) * | 2019-07-18 | 2019-11-01 | 中国科学院金属研究所 | A kind of environmental simulation test device and application method |
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