CN214387768U - Animal contamination device - Google Patents
Animal contamination device Download PDFInfo
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- CN214387768U CN214387768U CN202022144352.8U CN202022144352U CN214387768U CN 214387768 U CN214387768 U CN 214387768U CN 202022144352 U CN202022144352 U CN 202022144352U CN 214387768 U CN214387768 U CN 214387768U
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Abstract
The utility model discloses an animal contamination device, the contamination device includes toxic gas generator, flow control mechanism, contamination cabinet, toxic gas recovery container and vacuum suction mechanism, one side below the contamination cabinet is equipped with the toxic gas intake pipe, intake pipe one end is located in the contamination cabinet, another end is connected with the toxic gas generator through the flow control mechanism, another side below the contamination cabinet is equipped with the toxic gas outlet duct, outlet duct one end is located in the contamination cabinet, another end enters into the toxic gas recovery container, the toxic gas recovery container is connected with the vacuum suction mechanism through the pipeline; an air inlet hole is arranged at the position above the contamination cabinet corresponding to the air inlet pipe and the air outlet pipe, and a monitor is also arranged in the contamination cabinet. The contamination device is simple in structure, low in cost, accurate in gas distribution, simple in operation, good in dynamic monitoring performance, good in sealing performance, strong in repeatability, convenient to move, good in contamination effect, free of toxic gas residue and capable of being released into the atmospheric environment.
Description
Technical Field
The utility model belongs to the technical field of the device of being exposed to poison, concretely relates to animal device of being exposed to poison.
Background
The animal inhalation contamination experiment is widely applied to the research of environmental protection, industrial sanitation, toxicology and the like, so that the research of the contamination of various poisons through respiratory tracts by a contamination device becomes an important tool. In order to research the toxic mechanism of harmful gas and verify the effect of the treatment method, it is urgently needed to establish an animal contamination model, and the current common animal contamination methods include a static inhalation method, a dynamic inhalation method, an injection contamination method and the like. Obviously, the dynamic inhalation method is more in line with the natural process of gas poisoning, and has more practical significance and greater scientific research reference value for observation and sampling at each time point in the animal poisoning process.
The existing animal contamination devices mainly adopt two types of animal inhalation type exposure modes:
one is a commercial automatic integrated device, which comprises a microcomputer control module, an air treatment system, an exposure module, an excrement treatment module and other multifunctional large-scale cabinets and can automatically control exposure parameters such as temperature, air pressure, humidity, aerosol concentration and the like. However, the price is high and reaches dozens of thousands of yuan, the size is too large, the movement and the placement are not convenient, special auxiliary equipment or materials are needed, the use cost is increased, the later maintenance cost is high, and once a fault occurs, the maintenance needs professional personnel, the waiting period is uncertain, and the experiment progress is influenced. If the number of times of use of the buyer is less, the use cost is increased sharply; due to the large volume, the mobile phone is inconvenient to move and place, and is inconvenient to borrow or rent temporarily. The other type of device is a simply designed box body, and mainly has the following problems; 1. the water sample of gas atomization directly gets into the animal and exposes the district with high concentration water smoke form, still exists with the little liquid drop state of water smoke form, has the risk that the mouth and nose exposes simultaneously, and too big can increase the animal and not feel comfortable, still there is great difference with the result of simple gas exposure. 2. The dynamic monitoring of various parameters (humidity, temperature, air pressure, exposed gas concentration, oxygen content and the like) in the box body cannot be ensured, and the stability and the uniformity are ensured, and the common problems that the parameters in the box body are unstable and the early warning function is not available when the parameters are abnormal exist. 3. The exposure device of the completely sealed box body can increase the matching cost of the device on one hand because of the dynamic balance and dynamic monitoring of various parameters (humidity, temperature, air pressure, concentration of exposed gas, oxygen content and the like), such as various stabilizers and monitoring equipment; on the other hand, the adjustment of the parameters at the early stage is relatively complex.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an animal device of contracting poison, this device of contracting poison simple structure, low cost, convenient removal, distribution are accurate, easy operation, dynamic monitoring, the leakproofness is good, and repeatability is strong.
The above object of the present invention can be achieved by the following technical solutions: an animal contamination device comprises a toxic gas generator, a flow control mechanism, a contamination cabinet, a toxic gas recovery container and a vacuum suction mechanism, wherein a toxic gas inlet pipe is arranged on one side below the contamination cabinet, one end of the inlet pipe is arranged in the contamination cabinet, the other end of the inlet pipe is connected with the toxic gas generator through the flow control mechanism, a toxic gas outlet pipe is arranged on the other side below the contamination cabinet, one end of the outlet pipe is arranged in the contamination cabinet, the other end of the outlet pipe enters the toxic gas recovery container, and the toxic gas recovery container is connected with the vacuum suction mechanism through a pipeline; and an air inlet hole is arranged at the position above the contamination cabinet corresponding to the air inlet pipe and the air outlet pipe, and a monitor is also arranged in the contamination cabinet.
Preferably, the flow control mechanism comprises a pressure reducing valve, a pressure controller, a panel type adjustable flowmeter, a one-way valve and a mass flow controller.
Preferably, the number of the air inlet pipes is multiple, and further, the number of the air inlet pipes is three.
Preferably, the top of one end of the air inlet pipe and the air outlet pipe arranged in the toxicant exposure cabinet is provided with an aeration head or a bubble stone.
Preferably, the top of one end of the gas outlet pipe entering the toxic gas recovery container is provided with an L-shaped or U-shaped gas outlet.
Preferably, the toxic gas generator is a gas cylinder with nitrogen dioxide and nitrogen gas arranged inside.
Preferably, the monitor is for monitoring including NO2、O2、CO2Temperature, atmospheric pressure and relative humidity, the portable monitor is located on the slide that is located the toxicant exposure cabinet cavity.
Preferably, the toxic gas recovery container is an absorption bottle internally provided with a sodium hydroxide solution, an air inlet pipe for adjusting the internal pressure of the toxic gas recovery container is further arranged on a pipeline connected with the vacuum absorption mechanism of the toxic gas recovery container, and a one-way valve is further arranged on the air inlet pipe.
Preferably, the vacuum suction mechanism is a circulating water type multipurpose vacuum pump, and the vacuum pump is connected with the contamination cabinet through the toxic gas recovery container and enables the contamination cabinet to be in a micro-negative pressure state.
Preferably, a one-way valve is further arranged on a pipeline through which the gas outlet pipe enters the toxic gas recovery container, and a one-way valve is also arranged on a pipeline through which the toxic gas recovery container is connected with the vacuum suction mechanism.
Compared with the prior art, the utility model has the advantages of it is following: the utility model provides an animal device of being contaminated has simple structure, low cost, and the distribution is accurate, easy operation, dynamic monitoring, the leakproofness is good, and repeatability is strong, and convenient the removal is not high to the place requirement, especially is limited to fund, place etc. or uses the lower research unit of frequency or individual, more has use value, and does not have toxic gas and remain and release atmospheric environment in, still is a semi-automatic little negative pressure dynamic toy device of being contaminated.
Drawings
FIG. 1 is a schematic view of an animal poisoning device in example 1.
Detailed Description
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
Example 1
As shown in fig. 1, the animal contamination device in this embodiment includes a toxic gas generator 1, a flow control mechanism 2, a contamination cabinet 3, a toxic gas recovery container 4 and a vacuum suction mechanism 5, wherein a toxic gas inlet pipe 31 is disposed at one side below the contamination cabinet 3, one end of the gas inlet pipe 31 is disposed in the contamination cabinet 3, the other end is connected to the toxic gas generator 1 through the flow control mechanism 2, a toxic gas outlet pipe 32 is disposed at the other side below the contamination cabinet 3, one end of the gas outlet pipe 32 is disposed in the contamination cabinet 3, the other end enters the toxic gas recovery container 4, and the toxic gas recovery container 4 is connected to the vacuum suction mechanism 5 through a pipeline; an air inlet hole 33 is arranged at the position above the contamination cabinet 3 corresponding to the air inlet pipe 31 and the air outlet pipe 32, and a monitor 34 is also arranged in the contamination cabinet 3.
The contamination cabinet 3 is used for contamination tests of contaminated animals, can be made of stainless steel and acrylic glass, and can also be directly purchased as finished products. The side, bottom and upper surfaces of the toxicant exposure cabinet can be provided with through holes, a flowmeter, an air inlet pipe, an air outlet pipe, air inlet and the like are used, but sealing rubber plugs are required to be added after installation, so that the toxicant exposure cabinet is airtight and can bear negative pressure (micro negative pressure) of about 0.02 standard atmosphere when being sealed.
The flow control mechanism 2 includes a pressure reducing valve 21, a pressure controller 22, a panel-type adjustable flow meter 23, a check valve 24, and a mass flow controller 25.
More than one air inlet pipe 31 can be arranged, in the embodiment, three air inlet pipes 31 are arranged, and one air outlet pipe 32 is arranged.
An aeration head or a bubble stone 35 is arranged at the top of one end of the gas inlet pipe 31 and the gas outlet pipe 32 arranged in the toxicant exposure cabinet 3.
As a recommended mode, the aeration head or the air bubble stone is round or oval, the diameter is about 8 cm, the material is plastic or carborundum, and the performance requires that the air outlet is uniform and cloud-shaped.
The top of one end of the gas outlet pipe 32 entering the toxic gas recovery container 4 is provided with an L-shaped or U-shaped gas outlet.
The toxic gas generator 1 is a gas cylinder with nitrogen dioxide and nitrogen gas inside.
Monitor 34 for monitoring including NO2、O2、CO2Temperature, air pressure and relative humidity, wherein the movable monitor is arranged on a slideway (the slideway can be arranged at the bottom of the toxicant exposure cabinet, and the commercially available monitor can slide in the slideway) which is positioned in the cavity of the toxicant exposure cabinet 3.
The toxic gas recovery container 4 is an absorption bottle with a sodium hydroxide solution therein, an air inlet pipe 51 for adjusting the internal pressure of the toxic gas recovery container is further arranged on a pipeline connecting the toxic gas recovery container 4 and the vacuum absorption mechanism 5, and a check valve is further arranged on the air inlet pipe 51.
As a recommended mode, the toxic gas recovery container 4 has a solvent of about 10 liters, is in the shape of a glass flask, is provided with a sealing plug, and is made of a wooden plug (resistant to strong acid and strong alkali); three outlets of the large flask are connected by rubber pipes, and all pipelines are acid-base corrosion resistant steel pipes; the L-shaped (or U-shaped) tail gas discharge port is a porous plastic pipe (which can ensure that the discharged gas is in a cloud shape and is convenient for alkali liquor absorption).
The air inlet pipe 51 passes through the one-way valve and then is connected with air, and the air inlet pipe has the function of inputting air into the large flask instead of exhausting tail gas, so that the air pressure in the flask can be conveniently adjusted.
The sodium hydroxide solution can be prepared by adding water into a container and then adding sodium hydroxide tablets to prepare a high-concentration toxic gas (nitrogen dioxide) absorption liquid, or can be directly added into the high-concentration sodium hydroxide solution, wherein black agglomerates are generated when the sodium hydroxide tablets are added into the water, as shown in figure 1.
The vacuum absorbing mechanism 5 is a circulating water type multipurpose vacuum pump, and the vacuum pump is connected with the contamination cabinet 3 through a toxic gas recovery container 4 and enables the contamination cabinet 3 to be in a micro-negative pressure state.
The pipeline of the gas outlet pipe 32 entering the toxic gas recovery container 4 is also provided with a one-way valve, and the pipeline of the toxic gas recovery container 4 connected with the vacuum suction mechanism 5 is also provided with a one-way valve.
Various pressure reducing valves, flowmeters, one-way valves and the like adopted in the application have the characteristics of strong acid and alkali corrosion resistance and high and low pressure resistance at the same time.
After the vacuum pump starts to operate, the toxic gas recovery container 4 and the contamination cabinet 3 are in a micro-negative pressure environment (about 0.02 standard atmospheric pressure), and NO in the contamination cabinet 3 is ensured2The gas concentration is relatively stable, and the concentration can be adjusted to be 1-20 ppm; ensuring the purified gas NO in the toxic gas recovery vessel 42The concentration is less than 1 ppm.
While the present invention has been described with reference to certain embodiments, it should be understood that the present invention is not limited to the embodiments described herein. Other people's modifications and adjustments according to the invention that are not essential are within the scope of the invention.
Claims (10)
1. An animal contamination device, which is characterized in that: the toxicant exposure device comprises a toxic gas generator, a flow control mechanism, a toxicant exposure cabinet, a toxic gas recovery container and a vacuum suction mechanism, wherein a toxic gas inlet pipe is arranged on one side below the toxicant exposure cabinet, one end of the inlet pipe is arranged in the toxicant exposure cabinet, the other end of the inlet pipe is connected with the toxic gas generator through the flow control mechanism, a toxic gas outlet pipe is arranged on the other side below the toxicant exposure cabinet, one end of the outlet pipe is arranged in the toxicant exposure cabinet, the other end of the outlet pipe enters the toxic gas recovery container, and the toxic gas recovery container is connected with the vacuum suction mechanism through a pipeline; and an air inlet hole is arranged at the position above the contamination cabinet corresponding to the air inlet pipe and the air outlet pipe, and a monitor is also arranged in the contamination cabinet.
2. The animal toxicant exposure apparatus of claim 1, wherein: the flow control mechanism comprises a pressure reducing valve, a pressure controller, a panel type adjustable flowmeter, a one-way valve and a mass flow controller.
3. The animal toxicant exposure apparatus of claim 1, wherein: the number of the air inlet pipes is three.
4. The animal toxicant exposure apparatus of claim 1, wherein: the top of one end of the air inlet pipe and the air outlet pipe arranged in the toxicant exposure cabinet is provided with an aeration head or a bubble stone.
5. The animal toxicant exposure apparatus of claim 1, wherein: and an L-shaped or U-shaped exhaust port is arranged at the top of one end of the gas outlet pipe entering the toxic gas recovery container.
6. The animal toxicant exposure apparatus of claim 1, wherein: the toxic gas generator is a gas cylinder internally provided with nitrogen dioxide and nitrogen.
7. The animal toxicant exposure apparatus of claim 1, wherein: the monitor is for monitoring including NO2、O2、CO2Temperature, atmospheric pressure and relative humidity, the portable monitor is located on the slide that is located the toxicant exposure cabinet cavity.
8. The animal toxicant exposure apparatus of claim 1, wherein: the toxic gas recovery container is an absorption bottle internally provided with a sodium hydroxide solution, an air inlet pipe used for adjusting the internal pressure of the toxic gas recovery container is further arranged on a pipeline connected with the vacuum absorption mechanism of the toxic gas recovery container, and a one-way valve is further arranged on the air inlet pipe.
9. The animal toxicant exposure apparatus of claim 1, wherein: the vacuum suction mechanism is a circulating water type multipurpose vacuum pump, and the vacuum pump is connected with the contamination cabinet through the toxic gas recovery container and enables the contamination cabinet to be in a micro-negative pressure state.
10. The animal toxicant exposure apparatus of claim 1, wherein: the pipeline of the gas outlet pipe entering the toxic gas recovery container is also provided with a one-way valve, and the pipeline of the toxic gas recovery container connected with the vacuum suction mechanism is also provided with a one-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022144352.8U CN214387768U (en) | 2020-09-25 | 2020-09-25 | Animal contamination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022144352.8U CN214387768U (en) | 2020-09-25 | 2020-09-25 | Animal contamination device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214387768U true CN214387768U (en) | 2021-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022144352.8U Active CN214387768U (en) | 2020-09-25 | 2020-09-25 | Animal contamination device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214387768U (en) |
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2020
- 2020-09-25 CN CN202022144352.8U patent/CN214387768U/en active Active
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