Aerosol protection performance demonstration device

Abstract

The utility model provides an aerosol protection performance demonstration device, which comprises an aerosol generation module, a smoke filtering layer module, an aerosol concentration detection module and a control system module, the aerosol generation module is used for forming simulated mixed gas of aerosol particles and air, and when aerosol passes through the smoke filtering layer module, the aerosol concentration detection module is used for detecting the aerosol concentration when the aerosol passes through the smoke filtering layer module. The smoke filtering material in the cavity can filter the aerosol, and the color change of the aerosol before and after filtering can be observed through the transparent pipe cavity. According to the utility model, the technical problem that the aerosol protection performance of the canister filtering material cannot be directly observed in the traditional teaching and actual operation can be solved, and the visual demonstration of the aerosol filtering process can be realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of poisonous and harmful gas protection, and specifically relates to an aerosol protection performance demonstration device. Background Art

[0002] The gas filter canister is an important component of the filtering gas mask and plays a vital role in ensuring the life safety of workers in toxic and harmful environments. Among them, the high-efficiency filter paper inside the gas filter canister is the key material for protecting toxic and harmful aerosols, also known as the smoke filter layer material, which achieves the purpose of purifying the air by blocking the penetration of aerosol particles. Since the gas filter canister is a closed structure and is not convenient to disassemble, it is impossible to directly and clearly observe the changes in the blocking and penetration of aerosols in the smoke filter layer during the respiratory protection teaching demonstration and actual operation, and thus it is impossible to simulate the principle process of the gas filter canister filter material for aerosol protection. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] The utility model provides an aerosol protection performance demonstration device to solve the technical problem that the aerosol protection performance of the filter material of the canister cannot be directly observed in traditional teaching and actual operation, and realizes a visual demonstration of the aerosol filtering process.

[0005] (II) Technical solution

[0006] In order to solve the above technical problems, the utility model proposes an aerosol protection performance demonstration device, which includes an aerosol generation module, a smoke filter layer module, an aerosol concentration detection module and a control system module; wherein,

[0007] The aerosol generating module includes a turbine fan, a compression pump, a liquid storage bottle, a mixing chamber and a flow meter; wherein the liquid storage bottle stores an aerosol generating medium; the compression pump generates a high-speed airflow to impact the aerosol generating medium in the liquid storage bottle, generates aerosol particles and passes them into the mixing chamber; the turbine fan sends air into the mixing chamber to mix with the aerosol particles, and a flow meter is arranged between the turbine fan and the mixing chamber, and the concentration of the mixed aerosol is adjusted by the flow meter to ensure that the flow meets the test requirements; the mixed aerosol passes into the smoke filter layer module through a transparent pipeline;

[0008] The smoke filter module is a transparent, detachable structure used to simulate the aerosol filtration and interception process;

[0009] The aerosol concentration detection module includes a particle counter, a purifier and a display screen. The particle counter is connected to the smoke filter layer module and is used to detect the concentration of aerosol before and after filtration during the smoke filtration demonstration and display it through the display. The purifier is connected to the air outlet on the rear end cavity through a transparent pipeline and is used to filter out the aerosol that passes through the smoke filter layer module.

[0010] The control system module is connected to other modules and pipelines through the control circuit, and the demonstration process parameters are designed through the built-in control software, so that the entire process is automatically feedback controlled and the aerosol protection performance demonstration test is completed according to the set parameters.

[0011] Furthermore, the aerosol generating medium is edible oil, turbine oil, sodium chloride aqueous solution or dioctyl phthalate.

[0012] Furthermore, the smoke filter layer module includes a front-end cavity, a sealing gasket and a rear-end cavity; wherein, the front end of the rear-end cavity is screwed and sealed with the front-end cavity through a thread, and a sealing gasket is arranged at the interface; smoke filter materials with filtering performance are placed in the front-end cavity and the rear-end cavity for observing the color changes before and after aerosol filtration; the air inlet on the front-end cavity is connected to the air outlet of the mixing cavity through a transparent pipeline, and the air outlet on the rear-end cavity is connected to the purifier of the aerosol concentration detection module through a transparent pipeline.

[0013] Furthermore, the smoke filter material is filter paper or glass fiber paper.

[0014] (III) Beneficial effects

[0015] The utility model proposes an aerosol protection performance demonstration device, including an aerosol generation module, a smoke filter layer module, an aerosol concentration detection module and a control system module. The aerosol generation module is used to form a simulated mixed gas of aerosol particles and air. When the aerosol passes through the smoke filter layer module, the smoke filter material in the cavity will filter the aerosol, and the color change of the aerosol before and after filtering can be observed through the transparent tube cavity. The utility model can solve the technical problem that the aerosol protection performance of the filter material of the canister cannot be directly observed in traditional teaching and actual operation, and realize the visual demonstration of the aerosol filtration process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the aerosol protection performance demonstration device of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the smoke filter module in the utility model. DETAILED DESCRIPTION

[0018] In order to make the purpose, content and advantages of the utility model clearer, the specific implementation methods of the utility model are further described in detail below in conjunction with the drawings and embodiments.

[0019] This embodiment provides an aerosol protective performance demonstration device, the overall structure of which is as follows: Figure 1 As shown, the device consists of an aerosol generating module, a smoke filtering layer module 6, an aerosol concentration detecting module 7 and a control system module 9.

[0020] The aerosol generating module includes a turbine fan 1, a compression pump 4, a liquid storage bottle 3, a mixing chamber 5 and a flow meter 2. The liquid storage bottle 3 stores an aerosol generating medium, which is usually edible oil (corn oil, peanut oil, etc.), turbine oil, sodium chloride aqueous solution or dioctyl phthalate. The compression pump 4 generates a high-speed airflow to impact the aerosol generating medium in the liquid storage bottle 3, generating aerosol particles and passing them into the mixing chamber 5. The turbine fan 1 sends air into the mixing chamber 5 at a certain wind speed to mix with the aerosol particles. A flow meter 2 is set between the turbine fan 1 and the mixing chamber 5. The concentration of the mixed aerosol is adjusted by the flow meter 2 to ensure that the flow rate meets the test requirements. The mixed aerosol is passed into the smoke filter layer module 6 through a transparent pipeline.

[0021] The smoke filter layer module 6 is a transparent detachable structure, which is used to simulate the aerosol filtering and interception process. Figure 2 As shown, it includes a front-end cavity 6-1, a sealing gasket 6-2 and a rear-end cavity 6-3. Among them, the front end of the rear-end cavity 6-3 is screwed and sealed with the front-end cavity 6-1 through a thread, and a sealing gasket 6-2 is provided at the interface. Smoke filter materials with filtering performance, such as filter paper and glass fiber paper, are placed in the front-end cavity 6-1 and the rear-end cavity 6-3, so as to facilitate the observation of the color change before and after the aerosol filtration. The air inlet on the front-end cavity 6-1 is connected to the air outlet of the mixing chamber 5 through a transparent pipeline, and the air outlet on the rear-end cavity 6-3 is connected to the purifier 8 of the aerosol concentration detection module through a transparent pipeline. When the aerosol passes through the smoke filter layer module 6, the smoke filter material in the cavity will filter the aerosol, and the color change of the aerosol before and after filtration can be observed through the transparent tube cavity.

[0022] The aerosol concentration detection module includes a particle counter 7, a purifier 8 and a display screen. The particle counter 7 is connected to the smoke filter layer module 6, and is used to detect the concentration of aerosol before and after filtration during the smoke filter demonstration process and display it on the display. The purifier 8 is connected to the air outlet on the rear cavity 6-3 through a transparent pipeline, and is used to filter out the aerosol that passes through the smoke filter layer module 6.

[0023] The control system module 9 is connected to other modules and pipelines through the control circuit, and the demonstration process parameters are designed through the built-in control software, so that the entire process is automatically feedback controlled, and the aerosol protection performance demonstration test is completed according to the set parameters, realizing the automation and intelligent operation of the demonstration work.

[0024] During the entire demonstration process, in order to facilitate teaching and guidance of the experimental process, photoelectric process indicator lights are set on each module of the demonstration device and the experimental gas path, which can indicate both the working status of each module and the movement direction of the aerosol.

[0025] The method for demonstrating the aerosol protection performance demonstration device of the utility model is as follows:

[0026] The aerosol generating medium is loaded into the liquid storage bottle 3, and the electric control switches of the compression pump 4 and the turbine fan 1 are started. The compression pump 4 generates a high-speed airflow to impact the medium in the oil storage bottle 3 to aerosolize, and generate white smoke-like aerosol particles; at the same time, the turbine fan 1 is running, and air is passed into the mixing chamber 5 at a certain wind speed to mix with the white smoke-like aerosol, and the aerosol concentration can be adjusted by the flow meter 2; the aerosol enters the smoke filter layer module 6 through the transparent pipeline, and the smoke filter material in the smoke filter layer module 6 filters the aerosol, and the color change of the aerosol before and after filtration can be observed through the transparent tube cavity; at the same time, the aerosol concentration detection module detects the aerosol concentration before and after filtration through the particle counter 7, and evaluates the protective performance of the smoke filter material by calculating the ratio of the initial concentration and the penetration concentration. After the control system module sets the parameters, it connects other modules through the control circuit, so that the whole process is automatically feedback controlled. This process can demonstrate in real time the process of aerosol being filtered and blocked by the smoke filter material in the transparent power tube cavity.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An aerosol protective performance demonstration device, characterized in that: The aerosol protection performance demonstration device includes an aerosol generation module, a smoke filter layer module, an aerosol concentration detection module and a control system module; wherein, The aerosol generating module comprises a turbine fan, a compression pump, a liquid storage bottle, a mixing chamber and a flow meter; wherein the liquid storage bottle stores an aerosol generating medium; the compression pump generates a high-speed airflow to impact the aerosol generating medium in the liquid storage bottle, thereby generating aerosol particles and passing them into the mixing chamber; the turbine fan sends air into the mixing chamber to mix with the aerosol particles; a flow meter is arranged between the turbine fan and the mixing chamber, and the concentration of the mixed aerosol is adjusted by the flow meter to ensure that the flow meets the test requirements; the mixed aerosol is passed into the smoke filter layer module through a transparent pipeline; The smoke filter layer module is a transparent detachable structure, which is used to simulate the aerosol filtering and interception process; The aerosol concentration detection module includes a particle counter, a purifier and a display screen. The particle counter is connected to the smoke filter layer module and is used to detect the concentration of aerosol before and after filtration and display it on the display during the smoke filtration demonstration process. The purifier is connected to the air outlet on the rear cavity through a transparent pipeline and is used to filter out the aerosol that passes through the smoke filter layer module. The control system module is connected with other modules and pipelines through a control circuit, and the demonstration process parameters are designed through built-in control software, so that the entire process is automatically feedback controlled and the aerosol protection performance demonstration test is completed according to the set parameters.

2. The aerosol protective performance demonstration device according to claim 1, characterized in that: The aerosol generating medium is edible oil, turbine oil, sodium chloride aqueous solution or dioctyl phthalate.

3. The aerosol protective performance demonstration device according to claim 1, characterized in that: The smoke filter layer module includes a front-end cavity, a sealing gasket and a rear-end cavity; wherein the front end of the rear-end cavity is screwed and sealed with the front-end cavity through a thread, and a sealing gasket is arranged at the interface; a smoke filter material with filtering performance is placed in the front-end cavity and the rear-end cavity to observe the color change before and after the aerosol filtration; the air inlet on the front-end cavity is connected to the air outlet of the mixing cavity through a transparent pipeline, and the air outlet on the rear-end cavity is connected to the purifier of the aerosol concentration detection module through a transparent pipeline.

4. The aerosol protective performance demonstration device according to claim 3, characterized in that: The smoke filtering material is filter paper or glass fiber paper.

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