Mask internal air flow demonstration device

Abstract

The utility model provides a mask internal airflow demonstration device which comprises a gas generation module, an airflow test module, a breathing machine module and a control system module, the gas generation module is used for generating aerosol smog, and the airflow test module is used for simulating the flowing process of airflow inside and outside a gas mask. And the respirator module is used for simulating the artificial respiration process and can adjust the ventilation volume and the respiration frequency. According to the utility model, the technical problem that the flowing process of the air flow in the gas mask cannot be directly observed in the traditional teaching and actual operation can be solved, and the visual demonstration of the flowing condition of the air flow in the mask can be realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of protection against toxic and harmful gases, and in particular relates to a mask internal airflow demonstration device. Background Art

[0002] Filter-type gas masks are an important part of respiratory protection equipment. They filter out toxic and harmful gases or aerosols through gas canisters to purify the air inside the mask, thereby ensuring the safety of workers. In order to facilitate the study of the flow process of the airflow inside the mask when workers wear masks, as well as the researchers' breathing process and the flow of airflow under different breathing volume conditions, a device is urgently needed to simulate and demonstrate the distribution of airflow inside the gas mask, solve the problem that cannot be directly observed in traditional teaching and actual operation, and then clearly and intuitively demonstrate the flow process of airflow inside the mask. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] The utility model provides a mask internal airflow demonstration device to solve the technical problem that the flow process of the airflow inside the gas mask cannot be directly observed in traditional teaching and actual operation, and realizes the visual demonstration of the flow of the airflow inside the mask.

[0005] (II) Technical solution

[0006] In order to solve the above technical problems, the utility model proposes a mask internal airflow demonstration device, which includes a gas generation module, an airflow test module, a ventilator module and a control system module; wherein,

[0007] The gas generation module is used to simulate the occurrence of toxic and harmful gases, including a smoke generator, a vacuum pump, a turbine fan, a mixing chamber and a flow meter; the vacuum pump passes the aerosol smoke generated by the smoke generator into the mixing chamber through a transparent pipe; the turbine fan sends air into the mixing chamber and mixes it with the aerosol smoke; a flow meter is set between the turbine fan and the mixing chamber, and the concentration of the mixed gas is adjusted by the flow meter to ensure that the flow meets the test requirements; the mixed aerosol smoke flows out through the outlet of the mixing chamber, close to the air inlet of the gas mask of the airflow test module;

[0008] The airflow test module is used to simulate the flow process of airflow inside and outside the gas mask, and realize the monitoring of the simulated artificial respiration airway and flow, including a gas mask and a test head model; wherein the test head model is used to simulate the head and face structure of a person, and the gas mask is put on the test head model; the mask air inlet of the gas mask is close to the outlet of the mixing chamber;

[0009] The ventilator module is used to simulate the artificial respiration process and can adjust the ventilation volume and respiratory frequency. It includes an artificial lung and a motion mechanism. The artificial lung is driven by the motion mechanism and is connected to the test head model through a pipeline. When the artificial lung inhales, a negative pressure is generated inside the mask of the gas mask through the oral and nasal cavities of the test head model, and the aerosol smoke generated by the outlet of the mixing chamber enters the mask through the air inlet near the mask, thereby generating air flow. When exhaling, the aerosol smoke inside the mask is discharged from the mask through the exhalation valve.

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

[0011] Further, the gas mask has a large eye window lens.

[0012] Furthermore, the lenses of the gas mask are made of transparent polymer material.

[0013] (III) Beneficial effects

[0014] The utility model proposes a mask internal airflow demonstration device, comprising a gas generation module, an airflow test module, a ventilator module and a control system module, wherein the gas generation module is used to generate aerosol smoke, the airflow test module is used to simulate the flow process of airflow inside and outside the gas mask, and realizes the monitoring of the simulated artificial respiration gas path and flow, and the ventilator module is used to simulate the artificial respiration process, and can adjust the ventilation volume and respiratory frequency. The utility model can solve the technical problem that the flow process of the airflow inside the gas mask cannot be directly observed in traditional teaching and actual operation, and realizes the visual demonstration of the flow of the airflow inside the mask. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the mask internal airflow demonstration device of the present utility model. DETAILED DESCRIPTION

[0016] 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.

[0017] This embodiment provides a mask internal airflow demonstration device, the overall structure of which is as follows: Figure 1 As shown, the device consists of a gas generating module, an airflow testing module, a ventilator module 8 and a control system module 9.

[0018] The gas generation module is used to generate aerosol smoke, including a smoke generator 1, a vacuum pump 4, a turbine fan 3, a mixing chamber 5 and a flow meter 2. The aerosol smoke generated by the smoke generator 1 is passed into the mixing chamber 5 through a transparent pipeline through the vacuum pump 2. The turbine fan 3 sends air into the mixing chamber 5 at a certain wind speed to mix with the aerosol smoke. A flow meter 4 is set between the turbine fan 3 and the mixing chamber 5. The concentration of the mixed gas is adjusted by the flow meter 4 to ensure that the flow rate meets the test requirements. The mixed aerosol smoke flows out through the outlet of the mixing chamber, close to the air inlet of the gas mask mask of the airflow test module.

[0019] The airflow test module is used to simulate the flow process of airflow inside and outside the gas mask, and realize the monitoring of the simulated artificial respiration airway and flow, and includes a gas mask 6 and a test head mold 7. The test head mold 7 is used to simulate the head and face structure of a person, and the gas mask 6 is mounted on the test head mold 7. The mask air inlet of the gas mask 6 is close to the outlet of the mixing chamber 5. The gas mask 6 has a large eye window lens, and the lens is made of a transparent polymer material.

[0020] The ventilator module 8 is used to simulate the artificial respiration process and can adjust the ventilation volume and respiratory frequency, including an artificial lung and a motion mechanism. The artificial lung is driven by the motion mechanism and is connected to the test head mold 7 through a pipeline. When inhaling, the aerosol smoke generated by the outlet of the mixing chamber 5 enters the mask through the air inlet near the mask, thereby generating air flow; when exhaling, the aerosol smoke inside the mask is discharged from the mask through the exhalation valve.

[0021] 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 internal airflow demonstration test of the mask is completed according to the set parameters, realizing the automation and intelligent operation of the demonstration work.

[0022] The method for demonstrating by using the mask internal airflow demonstration device of the utility model is as follows: install the smoke generator 1 on the gas generation module, start the vacuum pump 2, suck the aerosol smoke into the pipeline and pass it into the mixing chamber 5, and at the same time, the turbine fan 3 is running, and the air is passed into the mixing chamber 5 at a certain flow rate and mixed with the aerosol smoke, and the flow meter 4 is used to adjust the air flow; the mixed aerosol smoke flows to the vicinity of the mask air inlet of the gas mask 6 through the air outlet of the mixing chamber 5, and at the same time, the respirator module 8 works to simulate the artificial respiration state, and the aerosol smoke near the mask air inlet enters the mask during inhalation, generating airflow; during exhalation, the aerosol smoke inside the mask is discharged from the mask through the exhalation valve. This process can demonstrate the flow process of the aerosol smoke in the air flow inside the mask of the gas mask 6 during the artificial respiration process. 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.

[0023] 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. A mask internal airflow demonstration device, characterized in that: The mask internal airflow demonstration device includes a gas generation module, an airflow test module, a ventilator module and a control system module; wherein, The gas generation module is used to simulate the generation of toxic and harmful gases, and includes a smoke generator, a vacuum pump, a turbine fan, a mixing chamber and a flow meter; wherein the aerosol smoke generated by the smoke generator is passed into the mixing chamber through a transparent pipeline by the vacuum pump; the turbine fan sends air into the mixing chamber and mixes it with the aerosol smoke; a flow meter is arranged between the turbine fan and the mixing chamber, and the concentration of the mixed gas is adjusted by the flow meter to ensure that the flow rate meets the test requirements; the mixed aerosol smoke flows out through the outlet of the mixing chamber, close to the air inlet of the gas mask of the airflow test module; The airflow test module is used to simulate the flow process of airflow inside and outside the gas mask to realize the monitoring of the simulated artificial respiration airway and flow, and includes a gas mask and a test head model; wherein the test head model is used to simulate the head and face structure of a person, and the gas mask is put on the test head model; the mask air inlet of the gas mask is close to the outlet of the mixing chamber; The ventilator module is used to simulate the artificial respiration process and can adjust the ventilation volume and respiratory frequency, including an artificial lung and a movement mechanism. The artificial lung is driven by the movement mechanism and is connected to the test head model through a pipeline. When the artificial lung inhales, a negative pressure is generated inside the mask of the gas mask through the oral and nasal cavities of the test head model, and the aerosol smoke generated by the outlet of the mixing chamber enters the mask through the air inlet near the mask, thereby generating air flow. When exhaling, the aerosol smoke inside the mask is discharged from the mask through the exhalation valve. The control system module is connected to 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 mask internal airflow demonstration test is completed according to the set parameters.

2. The mask internal airflow demonstration device according to claim 1, characterized in that: The gas mask has large eye-window lenses.

3. The mask internal airflow demonstration device according to claim 1, characterized in that: The lenses of the gas mask are made of transparent polymer material.

Images