Multi-dimensional air purification demonstration system

Abstract

The utility model discloses a multi-dimensional air purification demonstration system, which belongs to the technical field of air purification and comprises a base, an air purification area, an interactive operation area, a static display area and a dynamic display area. A ventilation pipeline, and a smoke generator, a front particulate matter concentration detector, a purification cabinet, a rear particulate matter concentration detector and a fan which are sequentially mounted in the ventilation pipeline in the airflow direction are mounted in the air purification area; the purification cabinets are detachably and fixedly connected with the ventilation pipeline, air purification modules are arranged in the purification cabinets, and the air purification modules arranged in the purification cabinets are different from one another; a start button, a stop button, a particle size adjusting button and a wind speed adjusting button are fixed in the interactive operation area; a display screen is fixed in the dynamic display area; and a groove for placing the air purification module is formed in the static display area. According to the utility model, not only can the interactive experience feeling of audiences be enhanced, but also the purification effects of various purification technologies can be better displayed to the audiences.

Description

Technical Field

[0001] The utility model relates to the technical field of demonstration teaching equipment, and in particular to a multi-dimensional air purification demonstration system. Background Art

[0002] Indoor air quality and safety cannot be ignored. Particles affect air quality and are harmful to human health. In recent years, the impact of haze weather and respiratory infectious diseases has led the country to put forward higher requirements for the air purification efficiency of indoor ventilation systems and the indoor particle concentration limit. In order to implement the "Healthy China" policy and the "Outline of the National Science Literacy Action Plan (2021-2035)" to "strengthen the construction of science popularization infrastructure and create a public safety and health education base", it is very necessary for science popularization venues to popularize particle purification technology to the general public.

[0003] At present, the way science and technology exhibitions at popular science venues display indoor air purification technology is mainly in the form of text, pictures, principle and structure display, animation video, etc., and the air purification equipment prototype is also displayed. Most of the existing air purification technology exhibits display a single purification technology, and rarely display different purification technologies. For the audience in science and technology exhibition venues, especially young people, they cannot observe the exhibits in detail and try to operate them, which lacks fun and experience.

[0004] In addition, the air purification devices displayed at air purification technology exhibitions or by professional manufacturers are basically purification equipment produced by exhibition equipment manufacturers. They are highly professional and have a small audience range, which is also not conducive to the understanding of the scientific principles by ordinary audiences, especially young people.

[0005] Therefore, there is an urgent need for a popular science display device that can demonstrate the effects of different types of particulate matter purification technologies, while also being able to solve problems such as insufficient audience participation in traditional static displays and physical exhibits, thereby strengthening the popular science publicity of air particulate matter pollution and purification technologies and achieving good popular science effects. Utility Model Content

[0006] In view of the problems that the existing air purification technology popular science devices and exhibits can only demonstrate the air purification effect of a single air purification technology, as well as the low level of audience participation and poor experience, the purpose of the utility model is to provide a multi-dimensional air purification demonstration system to at least partially solve the above problems.

[0007] To achieve the above purpose, the technical solution of the utility model is:

[0008] A multi-dimensional air purification demonstration system, comprising a base, and an air purification area, an interactive operation area, a static display area, and a dynamic display area fixedly arranged on the base;

[0009] The air purification area is fixedly installed with a ventilation duct and a smoke generator, a front particle concentration detector, at least one purification cabinet, a rear particle concentration detector and a fan sequentially installed in the ventilation duct along the air flow direction; the purification cabinet is detachably fixedly connected to the ventilation duct, an air purification module is arranged in the purification cabinet, and the purification cabinet is provided with air inlet and air outlet channels;

[0010] The interactive operation area is fixedly provided with a start button for controlling the air purification area to start working, a stop button for controlling the air purification area to stop working, a particle size adjustment button for controlling the particle size of the smoke particles emitted by the smoke generator, and a wind speed adjustment button for controlling the wind speed of the fan;

[0011] A display screen is fixedly installed in the dynamic display area, and the display screen is used to display the particle concentration values ​​measured by the front particle concentration detector and the rear particle concentration detector;

[0012] The static display area is provided with grooves for placing the air purification modules, and the number of the grooves is the same as the number of the purification cabinets; and when there are two or more purification cabinets, the air purification modules arranged in each purification cabinet are different from each other, so as to purify smoke particles of different particle sizes in the air respectively.

[0013] Preferably, the air purification module includes a fixed outer frame and a filter filler or an electrostatic dust removal device loaded in the fixed outer frame.

[0014] Preferably, the filter filler is gauze or a high-efficiency filter mesh.

[0015] Preferably, at least one of the purification cabinets is provided with a positive contact and a negative contact which are electrically connected to the positive pole and the negative pole of the electrostatic precipitator respectively, and the inner wall of the ventilation duct is provided with a positive contact and a negative contact correspondingly.

[0016] Preferably, the purification cabinet is a drawer cabinet and is arranged horizontally when in use, and the bottom surface of the drawer cabinet is configured as a grid plate for carrying the air purification module.

[0017] Preferably, the ventilation duct is made of transparent material.

[0018] Preferably, a PLC controller is further included, and the PLC controller is electrically connected to the smoke generator, the fan, the start button, and the stop button.

[0019] Preferably, the purification cabinet and the ventilation duct are fixedly connected via an electromagnetic lock, and the electromagnetic lock is electrically connected to the PLC controller.

[0020] Preferably, each of the purification cabinets is provided with an indicator light for indicating its filling status, the indicator light is fixedly mounted on the ventilation duct, and the indicator light is electrically connected to the PLC controller.

[0021] Preferably, a mixer is further provided in the ventilation duct, the mixer is located between the smoke generator and the front particle concentration detector, and the mixer is electrically connected to the PLC controller.

[0022] By adopting the above technical scheme, the beneficial effect of the utility model is that: due to the setting of the detachable purification cabinet and the air purification module carried by it, the interactive operation area, the static display area and the dynamic display area in the air purification area, the audience can participate in the filling operation of the air purification module and the purification cabinet, and can operate various function buttons, thereby enhancing the interactive experience; in addition, by selecting the type of specific air purification module installed and the particle size of the smoke particles emitted by the smoke generator, the purification effect of different purification technologies under various types of air, as well as the combined purification effect of multiple air purification technologies under various types of air can be demonstrated, so that scientific popularization can be better displayed to the audience from multiple dimensions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the multi-dimensional air purification demonstration system disclosed in the utility model when not in use;

[0024] Figure 2 It is a structural schematic diagram of the multi-dimensional air purification demonstration system disclosed in the utility model when in use;

[0025] Figure 3 It is a structural schematic diagram of the air purification area in the utility model;

[0026] Figure 4 It is a top view of the purification cabinet in the utility model;

[0027] Figure 5 It is a structural schematic diagram of the purification cabinet and the air purification module in the utility model.

[0028] In the figure: 1-ventilation duct, 101-horizontal upper section, 102-vertical middle section, 103-horizontal lower section, 2-smoke generator, 3-front particle concentration detector, 4-purification cabinet, 41-positive contact, 42-negative contact, 5-rear particle concentration detector, 6-fan, 7-air purification module, 71-fixed outer frame, 72-carrying handle, 73-positive pole, 73-negative pole, 8-electromagnetic lock, 9-start button, 10-stop button, 11-particle size adjustment button, 12-wind speed adjustment button, 13-PLC controller, 14-display screen, 15-groove, 16-indicator light, 17-mixer, 18-base. DETAILED DESCRIPTION

[0029] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] It should be noted that, in the description of the present invention, the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", etc. are based on the description of the structure of the present invention as shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0031] The "first" and "second" in this technical solution are only used to distinguish the names of the same or similar structures, or corresponding structures with similar functions, and are not an arrangement of the importance of these structures, nor do they have a ranking, comparison of size, or other meanings.

[0032] In addition, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection between the two structures. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood based on the overall idea of ​​the utility model and the specific context of the scheme.

[0033] like Figure 1 and Figure 2 As shown, this embodiment provides a multi-dimensional air purification demonstration system, including a base 18 and an air purification area, an interactive operation area, a static display area and a dynamic display area fixedly arranged on the base 18.

[0034] The base 18 is configured as a rectangular shell structure, which is placed horizontally and fixed on the ground or a supporting table when in use.

[0035] Among them, Figure 3As shown, a ventilation duct 1 and a smoke generator 2, a front particle concentration detector 3, at least one (for example, three) purification cabinets 4, a rear particle concentration detector 5 and a fan 6 are fixedly installed (fixed on a base 18) in the air purification area. The purification cabinet 4 is detachably fixedly connected to the ventilation duct 1, an air purification module 7 is arranged in the purification cabinet 4, and air inlet and outlet channels are arranged on the purification cabinet 4.

[0036] In this embodiment, the ventilation duct 1 is made of transparent material, such as a rectangular square tube made of transparent acrylic plates, and includes a horizontal upper section 101, a vertical middle section 102, and a horizontal lower section 103 connected in sequence according to the airflow direction. The horizontal upper section 101 and the horizontal lower section 103 can be connected to two opposite sides of the vertical middle section 102, so that the ventilation duct 1 as a whole is roughly C-shaped or U-shaped and N-shaped with a sideways turn; the horizontal upper section 101 and the horizontal lower section 103 can also be connected to the same side of the vertical middle section 102, so that the ventilation duct 1 as a whole is roughly Z-shaped. Among them, the horizontal lower end 13 is located inside the base 18, and the top surface of the base 18 is provided with an opening for the vertical middle section 102 to extend out.

[0037] In this embodiment, the smoke generator 2 is fixedly installed in the horizontal upper section 101. The smoke generator 2 is configured as a controllable particle size smoke generator, which has three gears, so that the smoke generator 2 generates three levels of particles with particle sizes less than 2.5 μm, between 2.5-10 μm, and greater than 10 μm, thereby simulating different air environments.

[0038] In the present embodiment, the purification cabinet 4 is arranged in the vertical middle section 102, and there are three purification cabinets 4. The purification cabinets 4 are preferably drawer cabinets and are arranged horizontally. The corresponding vertical middle section 102 surface is provided with three openings for installing the drawer cabinets. The inner side wall of the vertical middle section 102 is provided with a matching guide rail, and the drawer cabinet can be loaded and unloaded without obstacles. Each drawer cabinet is fixedly connected to the ventilation duct 1 through an electromagnetic lock 8. For example, the electromagnetic lock 8 is fixedly installed on the outer wall of the ventilation duct 1, and a through hole for the lock head of the electromagnetic lock 8 to pass through is provided on the side wall of the ventilation duct 1, and a lock hole used in conjunction with the lock head of the electromagnetic lock 8 is provided on the side wall of the drawer cabinet, so that when the drawer cabinet is loaded in the vertical middle section 102 of the ventilation duct 1, the position of the drawer cabinet is locked by the electromagnetic lock 8. For the drawer cabinet, its top surface is open to facilitate air intake, and its bottom surface is configured as a grid plate for carrying the air purification module 7. The grid plate has a series of grid holes for air outlet, such as Figure 4 shown.

[0039] Among them, the interactive operation area is fixedly installed with a start button 9 for controlling the air purification area (specifically each electrical device therein) to start working, a stop button 10 for controlling the air purification area to stop working, a particle size adjustment button 11 for controlling the particle size of the smoke particles emitted by the smoke generator 2, and a wind speed adjustment button 12 for controlling the wind speed of the fan 6. The start button 9, the stop button 10, the particle size adjustment button 11, and the wind speed adjustment button 12 are all fixedly installed on one side of the top surface of the base 18.

[0040] In this embodiment, a PLC controller 13 is also provided inside the base 18, and the PLC controller 13 is electrically connected to the above-mentioned smoke generator 2, fan 6, start button 11 and stop button 12. The start button 11 and the stop button 12 do not directly control the start and stop states of the smoke generator 2 and the fan 6, but first send a start signal (stop signal) to the PLC controller 13, and the PLC controller 13 controls the start (stop) of the smoke generator 2 and the fan 6. This arrangement enables the user to control the start and stop sequence of the smoke generator 2 and the fan 6 based on the PLC program. Usually, when starting, the fan 6 is started first, and then the smoke generator 2 is started (for example, after a delay of 5 seconds). When stopping, the smoke generator 2 is stopped first, and then the fan 6 is stopped (after a delay of 5 seconds). In addition, the PLC controller 13 is also electrically connected to the above-mentioned electromagnetic lock 8, so that after pressing the start button 11 and before starting the fan 6, the electromagnetic lock 8 is controlled to lock each purification cabinet 4; correspondingly, after turning off the fan 6, the electromagnetic lock 8 is also controlled to unlock each purification cabinet 4, thereby making it convenient for the audience or staff to remove the purification cabinet 4.

[0041] In this embodiment, the particle size adjustment button 11 also has three gears. For example, the particle size adjustment button 11 includes three sub-buttons, each sub-button corresponds to a gear. Under the control of the three gears, the smoke generator 2 releases three levels of particles with particle sizes less than 2.5 μm, between 2.5-10 μm, and greater than 10 μm, respectively. The operator or the audience can directly operate the particle size adjustment button 11.

[0042] In this embodiment, the wind speed adjustment button 12 also has three gears. For example, the wind speed adjustment button 12 includes three sub-buttons, each sub-button corresponds to a gear. Under the control of its three gears, the rotation speed of the fan 6 is low speed (1000rpm), medium speed (2000rpm), and high speed (3000rpm). The operator or the audience can directly operate the particle size adjustment button 11.

[0043] Among them, a display screen 14 is fixedly installed in the dynamic display area, and the display screen 14 is embedded on one side of the top surface of the base 18. The display screen 14 is electrically connected to the front particle concentration detector 3 and the rear particle concentration detector 5. The display screen 14 is used to display the particle concentration values ​​measured by the front particle concentration detector 3 and the rear particle concentration detector 5. The front particle concentration detector 3 and the rear particle concentration detector 5 are both fixedly installed on the vertical middle section 102 of the ventilation duct 1. The front particle concentration detector 3 is used to detect the particle concentration in the air before purification, and the rear particle concentration detector 5 is used to detect the particle concentration in the purified air. The operator or the audience can intuitively understand the air purification effect by watching the two detection values ​​displayed on the display screen 14.

[0044] Among them, a groove 15 for placing the air purification module 7 is provided in the static display area. The groove 15 is provided on one side of the top surface of the base 18. The number of the grooves 15 is the same as the number of the purification cabinets 4, and in this embodiment, there are three. When the system is not in use, the groove 15 is used to place the air evolution module 7; when the system is in use, the air purification module 7 is loaded in the purification cabinet 4 (three air purification modules 7 do not have to be loaded all), and the air purification modules 7 carried in each purification cabinet 4 are different from each other, so as to purify smoke particles of different particle sizes in the air respectively.

[0045] In this embodiment, the air purification module 7 specifically includes a fixed outer frame 71 and a filter filler or an electrostatic dust removal device loaded in the fixed outer frame 71. For easy carrying, both ends of the top surface of the fixed outer frame 71 are further provided with carrying handles 72, which are configured to be made of flexible material so that the position of the carrying handles 72 can be adjusted by bending or deforming during use to avoid affecting the loading and unloading of the purification cabinet 4.

[0046] In this embodiment, there are two types of filter fillers, one is gauze and the other is a high-efficiency filter. Gauze, high-efficiency filter, and electrostatic dust removal equipment respectively constitute three different types of air purification modules 7. When the system is working, one or more types of different air purification modules 7 are selected and loaded in the corresponding purification cabinet 4. Among them, gauze is a sparse cotton fabric with a clear grid. Ordinary gauze materials cannot effectively filter small particle size (2.5μm and below) particles and cannot be used as anti-haze. High-efficiency filter nets are often made of ultra-fine glass fiber paper, etc., and their filtration efficiency is evaluated based on particles with a particle size of 0.3μm. The filtration efficiency of particles with a diameter of more than 0.3 microns can reach 99.97%, which can be used as anti-haze. Electrostatic dust removal equipment is a dust collection method that uses an electrostatic field to ionize the gas so that the dust particles are charged and adsorbed on the electrode. It can adsorb PM2.5 particles well and can be used as anti-haze. Its dielectric material uses a composite polymer material.

[0047] It is understandable that when the air purification module 7 is loaded with an electrostatic dust removal device, it needs to be powered, such as Figure 5 As shown, the side wall of the purification cabinet 4 is provided with a positive contact 41 and a negative contact 42 which are electrically connected to the positive electrode 83 and the negative electrode 84 of the electrostatic dust removal device, respectively. Correspondingly, the inner wall of the ventilation duct 1 is provided with a positive contact (connected to the positive electrode of the power supply, not shown in the figure) and a negative contact (connected to the negative electrode of the power supply, not shown in the figure), so as to facilitate the power supply to the electrostatic dust removal device. Among them, the positive contact 41 and the negative contact 42 penetrate the inner and outer sides of the far side wall of the purification cabinet 4 (the side wall away from the operator when in use), so as to be electrically connected to the electrostatic dust removal device loaded on the inner side of the purification cabinet 4, and at the same time electrically connected to the positive contact and the negative contact in the ventilation duct 1 at the outer side of the purification cabinet 4.

[0048] During use, since the air purification modules 7 carried by the three purification cabinets 4 are different from each other, only one of the purification cabinets 4 needs to be equipped with the positive contact 41 and the negative contact 42. The positive contact and the negative contact on the ventilation duct 1 are fixedly arranged, so that the purification cabinet 4 equipped with the electrostatic dust removal technology has a fixed installation position. Alternatively, three fixed arrangements of positive contacts and negative contacts are arranged on the ventilation duct 1, so that the purification cabinet 4 equipped with the electrostatic dust removal technology does not need to be fixedly installed, and it can be installed at any position as needed.

[0049] Each purification cabinet 4 is equipped with an indicator light 16 for indicating its filling status. The three indicator lights 16 are fixedly mounted on the ventilation duct 1 , and the indicator lights 16 are electrically connected to the PLC controller 13 .

[0050] In this embodiment, the indicator light 16 is configured as an LED lamp, which specifically includes a green lamp bead for emitting green light and a red lamp bead for emitting red light. The two form an array, and the two are connected in parallel and controlled by a push-type single-pole double-throw switch. The push-type single-pole double-throw switch is fixedly installed on the inner wall of the ventilation duct 1 opposite to each purification cabinet 4. In this way, for any purification cabinet 4, when it is not loaded in the ventilation duct 1, the push-type single-pole double-throw switch makes the red lamp bead powered on and in a normally open state, and the green lamp bead powered off and in a normally closed state; on the contrary, when the purification cabinet 4 is in the ventilation duct 1, the push-type single-pole double-throw switch is pressed down and switched to another state, that is, the green lamp bead is powered on and in a normally open state, and the red lamp bead is powered off and in a normally closed state.

[0051] Among them, a mixer 17 is also provided in the horizontal upper section 101 in the ventilation duct 1, and the mixer 17 is specifically located between the smoke generator 2 and the front particle concentration detector 3. The mixer 17 is used to fully mix the smoke particles emitted by the smoke generator 2 with the inhaled fresh air. On the one hand, this can avoid the maximum or minimum value of the value detected by the front particle concentration detector 3, and on the other hand, it can also ensure that the purification load of each part of the purification cabinet 4 is balanced. The mixer 17 is configured as a static air mixer. When the fan 6 is working, after the airflow flows in the ventilation duct 1, the static air mixer is rotated by the wind force, and then the smoke and air are stirred and mixed evenly by stirring. In this embodiment, the mixer 17 is also electrically connected to the PLC controller 13, and the mixer 17 starts and stops synchronously with the smoke generator 2.

[0052] The use process of the multi-dimensional air purification demonstration system disclosed in the utility model is as follows:

[0053] Before the demonstration, the air purification modules 7 are usually placed in the grooves 15. During the demonstration, the staff or the audience place one or more air purification modules 7 in the corresponding purification cabinets 4, and then load the three purification cabinets 4 (regardless of whether they are equipped with air purification modules 7) into the ventilation device 1. At this time, the indicator light 16 shows a green light;

[0054] Then the staff or the audience presses the start button 9. After receiving the start signal, the PLC controller 13 first controls the electromagnetic lock 8 to work, locks the three purification cabinets 4, and then starts the fan 6, and then the smoke generator 2 and the mixer 17 after a delay of 5 seconds. At the same time, the staff or the audience can also operate the particle size adjustment button 11 and the wind speed adjustment button 12 to make the smoke generator 2 release smoke particles of corresponding particle size, and make the fan 6 work at the required wind speed gear;

[0055] At this time, the pre-particle concentration detector 3 displays the particle concentration value in the unpurified air and the post-particle concentration detector 5 displays the particle concentration value in the purified air on the display screen 14, so that the audience can intuitively understand the purification effect of the air purification technology on the air;

[0056] At the end of the demonstration, the staff or the audience presses the stop button 10, and the PLC controller 13 receives the stop signal, first controls the smoke generator 2 and the mixer 17 to stop working, and then turns off the fan 6 after a delay of 5 seconds, and then controls the electromagnetic lock 8 to operate to unlock each purification cabinet 4; then the staff or the audience can remove the purification cabinet 4 from the ventilation duct 1 and take out the air purification module 7 (which can be used for observation and display or replacement), and at this time the indicator light 16 turns red;

[0057] In summary, the embodiment of the utility model, through the combination selection of the air purification module 7 and the particle size adjustment button 11, can enable the audience to understand the purification effects of different air purification technologies (when a certain air purification module 7 is installed) on different types of air (changing the particle size of particulate matter in the air by the particle size adjustment button 11), the combined purification effects of multiple air purification technologies on different types of air, and so on, thereby achieving the purpose of displaying air purification technology to the audience from multiple dimensions. In addition, the audience can also have a strong sense of participation and experience.

[0058] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A multi-dimensional air purification demonstration system, characterized by: It includes a base, and an air purification area, an interactive operation area, a static display area and a dynamic display area fixedly arranged on the base; The air purification area is fixedly installed with a ventilation duct and a smoke generator, a front particle concentration detector, at least one purification cabinet, a rear particle concentration detector and a fan sequentially installed in the ventilation duct along the air flow direction; the purification cabinet is detachably fixedly connected to the ventilation duct, an air purification module is arranged in the purification cabinet, and the purification cabinet is provided with air inlet and air outlet channels; The interactive operation area is fixedly provided with a start button for controlling the air purification area to start working, a stop button for controlling the air purification area to stop working, a particle size adjustment button for controlling the particle size of the smoke particles emitted by the smoke generator, and a wind speed adjustment button for controlling the wind speed of the fan; A display screen is fixedly installed in the dynamic display area, and the display screen is used to display the particle concentration values ​​measured by the front particle concentration detector and the rear particle concentration detector; The static display area is provided with grooves for placing the air purification modules, and the number of the grooves is the same as the number of the purification cabinets; and when there are two or more purification cabinets, the air purification modules arranged in each purification cabinet are different from each other, so as to purify smoke particles of different particle sizes in the air respectively.

2. The multi-dimensional air purification demonstration system according to claim 1, characterized in that: The air purification module comprises a fixed outer frame and a filter filler or an electrostatic dust removal device loaded in the fixed outer frame.

3. The multi-dimensional air purification demonstration system according to claim 2, characterized in that: The filter filler is gauze or a high-efficiency filter net.

4. The multi-dimensional air purification demonstration system according to claim 2, characterized in that: At least one of the purification cabinets is provided with a positive contact and a negative contact which are electrically connected to the positive pole and the negative pole of the electrostatic dust removal equipment respectively, and the inner wall of the ventilation duct is provided with a positive contact and a negative contact correspondingly.

5. The multi-dimensional air purification demonstration system according to claim 1, characterized in that: The purification cabinet is a drawer cabinet and is arranged horizontally when in use, and the bottom surface of the drawer cabinet is configured as a grid plate for carrying the air purification module.

6. The multi-dimensional air purification demonstration system according to claim 1, characterized in that: The ventilation duct is made of transparent material.

7. The multi-dimensional air purification demonstration system according to claim 1, characterized in that: It also includes a PLC controller, which is electrically connected to the smoke generator, the fan, the start button, and the stop button.

8. The multi-dimensional air purification demonstration system according to claim 7, characterized in that: The purification cabinet is fixedly connected to the ventilation duct via an electromagnetic lock, and the electromagnetic lock is electrically connected to the PLC controller.

9. The multi-dimensional air purification demonstration system according to claim 7, characterized in that: Each of the purification cabinets is equipped with an indicator light for indicating its filling status. The indicator light is fixedly mounted on the ventilation duct and is electrically connected to the PLC controller.

10. The multi-dimensional air purification demonstration system according to claim 7, characterized in that: A mixer is also provided in the ventilation duct, and the mixer is located between the smoke generator and the front particle concentration detector, and the mixer is electrically connected to the PLC controller.

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