Air pollution multi-source purification air treatment device and method

Abstract

The invention belongs to the technical field of air pollution treatment, and provides an air treatment device and method for air pollution multi-source purification, the air treatment device for air pollution multi-source purification comprises a sealing shell, an air inlet mechanism is arranged on one side of the sealing shell, and an air outlet mechanism is arranged on the other side of the sealing shell; a first-stage pre-purification module, a second-stage core purification module and a third-stage deep purification module are sequentially and detachably connected in the sealed shell in the airflow direction; the air purifier further comprises a linkage transmission mechanism and an intelligent monitoring regulation and control unit, the linkage transmission mechanism penetrates through the first-stage pre-purification module and the second-stage core purification module and is in driving connection with the first-stage pre-purification module and the second-stage core purification module, and the intelligent monitoring regulation and control unit is in signal connection with the air inlet mechanism, the linkage transmission mechanism, the air outlet mechanism and all the purification modules. According to the invention, the adaptability of multi-source pollutants is improved; deep purification of low-concentration pollutants is enhanced, and ultralow emission is achieved; the system collaboration is improved, the maintenance cost is reduced, and continuous operation is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of air pollution control technology, and in particular relates to an air treatment device and method for multi-source air pollution purification. Background Technology

[0002] With the acceleration of industrialization and urbanization, air pollution has become a complex pollution characterized by multiple sources and coexisting pollutants, including particulate matter (PM2.5, PM10), volatile organic compounds (VOCs), nitrogen oxides (NOx), and sulfides, posing a serious threat to the ecological environment and human health. To address this problem, various air pollution control devices have been developed, such as high-efficiency wet scrubbers that employ a multi-unit forward washing method to achieve flue gas purification with low resistance, suitable for complex conditions involving oil, water, and dust; multi-stage filtration devices that use combinations of screens with different pore sizes to gradually separate particles of different sizes, improving filtration efficiency; multi-stage photocatalytic water washing purifiers that combine photocatalytic disinfection and spray washing technologies to achieve air purification and humidity regulation; and deep denitrification systems that use pulsed power coupled with nanocatalysts to improve nitrogen oxide treatment efficiency. While these devices have shown some effectiveness in treating single pollutants or specific conditions, they still have many limitations when dealing with multi-source complex pollution.

[0003] The specific problems with the existing technology are as follows:

[0004] Poor adaptability to multi-source pollutants and insufficient targeted purification: Existing devices are mostly designed for single types of pollutants. For example, wet scrubbers focus on particulate matter removal, and photocatalytic devices focus on the degradation of specific VOCs. They are difficult to adapt to the complex pollution scenarios of particulate matter and multi-component gaseous pollutants at the same time. Even if some combined devices adopt a multi-module series design, each module operates independently and lacks a coordinated control mechanism, resulting in unstable purification effects on multi-source pollutants of different concentrations and components, and the phenomenon of some pollutants being missed.

[0005] Incomplete and insufficient purification of low- to medium-concentration pollutants: For low-concentration residual trace pollutants (such as low-concentration VOCs and ultrafine particulate matter) in scenarios such as industrial flue gas and urban dust, existing technologies, whether adsorption or catalytic oxidation, have limited removal efficiency. For example, traditional activated carbon adsorption devices are prone to adsorption saturation, while single photocatalytic technology has a slow degradation rate for low-concentration pollutants, making it difficult to achieve complete removal of pollutants and meet increasingly stringent ultra-low emission requirements.

[0006] The system suffers from weak coordination, high maintenance costs, and poor stability: the transmission systems of each module in the existing combined purification device are independent of each other and require separate drive components. This not only increases the size and energy consumption of the equipment, but also easily leads to problems such as airflow turbulence and excessive pressure loss caused by asynchronous operation. At the same time, the pollutant accumulation status of each module cannot be monitored in real time, requiring regular manual inspection and cleaning. This results in long maintenance cycles, high costs, and downtime during maintenance, affecting the continuity of treatment.

[0007] Therefore, an air treatment device and method for multi-source air pollution purification is needed to solve the above problems. Summary of the Invention

[0008] The purpose of this invention is to provide an air treatment device and method for multi-source purification of atmospheric pollution, so as to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: an air treatment device for multi-source purification of atmospheric pollution, comprising a sealed housing, wherein an air inlet mechanism is provided on one side of the sealed housing and an air outlet mechanism is provided on the other side of the sealed housing;

[0010] The sealed housing contains a primary pre-purification module, a secondary core purification module, and a tertiary deep purification module that are detachably connected sequentially along the airflow direction.

[0011] It also includes a linkage transmission mechanism and an intelligent monitoring and control unit. The linkage transmission mechanism runs through the primary pre-purification module and the secondary core purification module and is driven and connected to both. The intelligent monitoring and control unit is connected to the air inlet mechanism, the linkage transmission mechanism, the air outlet mechanism, and the signals of each purification module.

[0012] The first-level pre-purification module includes a rotating graded filter cartridge assembly, the second-level core purification module includes a pulsed plasma generator assembly and a catalytic rotor assembly, and the third-level deep purification module includes an adsorption-photocatalytic composite assembly.

[0013] The intelligent monitoring and control unit adjusts the operating parameters of the linkage transmission mechanism and the working status of each module based on the pollutant concentration signals at the inlet and outlet of each module.

[0014] In a further technical solution, the linkage transmission mechanism includes a drive motor, a main drive shaft, and several sets of transfer gears. The drive motor is fixed outside the sealed housing, and its output end is connected to one end of the main drive shaft. The other end of the main drive shaft extends into the sealed housing and is connected to the rotating graded filter cartridge assembly of the first-stage pre-purification module and the catalytic rotor assembly of the second-stage core purification module through the transfer gears.

[0015] A further technical solution is that the drive gear set includes a main gear, a driven gear one, and a driven gear two. The main gear is sleeved on the main drive shaft. The driven gear one is fixedly connected to the central shaft one of the rotating grading filter cartridge assembly and meshes with the main gear. The driven gear two is fixedly connected to the central shaft two of the catalytic rotor assembly and meshes with the main gear. The transmission ratio of the main gear, driven gear one, and driven gear two is adjustable.

[0016] In a further technical solution, the rotating grading filter cartridge assembly of the primary pre-purification module includes several coaxially arranged annular filter plates. The pore size of each annular filter plate gradually decreases along the airflow direction. The edges of the annular filter plates are fixed to the central shaft through a connecting frame. The two ends of the central shaft are detachably connected to the sealing housing through bearings.

[0017] In a further technical solution, the pulsed plasma generating component of the secondary core purification module includes several discharge electrodes evenly distributed circumferentially along the catalytic rotor assembly, and the discharge electrodes are electrically connected to a high-voltage pulse power supply; the catalytic support of the catalytic rotor assembly is a honeycomb ceramic matrix, and the surface of the matrix is ​​loaded with a composite metal oxide catalyst.

[0018] A further technical solution is that the adsorption-photocatalytic composite component of the three-stage deep purification module includes an adsorption layer and a photocatalytic layer, with the adsorption layer and photocatalytic layer alternately arranged; the adsorption layer is made of modified activated carbon material, the photocatalytic layer is made of porous ceramic material loaded with TiO2, and an ultraviolet light source is provided on one side of the photocatalytic layer.

[0019] A further technical solution is provided, wherein the intelligent monitoring and control unit includes several pollutant concentration sensors, temperature sensors, pressure sensors and a controller. The pollutant concentration sensors are respectively installed at the air inlet outlet, the inlet and outlet of the primary pre-purification module, the inlet and outlet of the secondary core purification module, the inlet and outlet of the tertiary deep purification module and the air outlet inlet. The signal output terminals of each sensor are connected to the signal input terminals of the controller, and the signal output terminals of the controller are electrically connected to the drive motor, the high-voltage pulse power supply, the ultraviolet light source and the drive components of the air inlet and air outlet mechanisms.

[0020] In a further technical solution, a drain port is provided at the bottom of the sealed housing corresponding to the position of each purification module, and a solenoid valve is provided at the drain port. The solenoid valve is connected to the intelligent monitoring and control unit.

[0021] In a further technical solution, the air intake mechanism includes an air intake duct and an air intake fan, with a guide plate installed inside the air intake duct; the air outlet mechanism includes an air outlet duct and an air outlet fan, with a silencer installed inside the air outlet duct.

[0022] An air treatment method for multi-source air pollution purification, applied to any of the aforementioned multi-source air pollution purification devices, includes the following steps:

[0023] S1. Start-up device: The intelligent monitoring and control unit detects the concentration of pollutants in the incoming air and drives the rotating graded filter cartridge assembly of the first-stage pre-purification module and the catalytic rotor assembly of the second-stage core purification module to operate synchronously through the linkage transmission mechanism.

[0024] S2. Polluted air enters the first-stage pre-purification module through the air intake mechanism. The rotating graded filter cartridge assembly separates large particulate pollutants and some easily condensable gaseous pollutant precursors from the air through centrifugal force and filtration.

[0025] S3. The pre-purified air enters the secondary core purification module. The pulse plasma generator produces high-energy particles to activate pollutant molecules. The catalytic rotor assembly rotates continuously under the drive of the linkage transmission mechanism, so that the activated pollutants come into full contact with the catalyst and undergo a degradation reaction.

[0026] S4. The air purified by the second stage enters the third stage deep purification module, where the adsorption-photocatalytic composite component adsorbs and photocatalytically oxidizes and decomposes the residual trace pollutants.

[0027] S5. The intelligent monitoring and control unit detects the concentration of pollutants at the outlet of the three-stage deep purification module in real time. If the concentration meets the standard, it is discharged through the air outlet mechanism; if the concentration does not meet the standard, it adjusts the operating parameters of the linkage transmission mechanism and the working status of each module until the concentration meets the standard and then discharges the pollutants.

[0028] S6. During operation, the intelligent monitoring and control unit periodically controls the opening of the sewage outlet solenoid valve based on the pressure sensor signal to discharge the pollutants collected by each module.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] This invention improves the adaptability to multi-source pollutants and enhances the targeted nature of purification: A linkage transmission mechanism drives the rotating graded filter assembly of the primary pre-purification module and the catalytic rotor assembly of the secondary core purification module to operate synchronously. Combined with the adaptive adjustment function of the intelligent monitoring and control unit, the rotation speed of the two modules can be flexibly adjusted according to the concentration and composition of the incoming air pollutants. The graded filter structure of the primary pre-purification module achieves graded separation of particles of different sizes, while the synergistic structure of the pulsed plasma generator assembly and catalytic rotor assembly of the secondary core purification module can target and degrade multi-component gaseous pollutants. Compared with existing single-function or independently operating combined devices, this invention significantly improves the adaptability to complex pollution scenarios involving particulate matter and multi-component gaseous pollutants, avoiding pollutant leakage.

[0031] This invention enhances the deep purification of low-concentration pollutants to achieve ultra-low emissions: Based on the targeted degradation of the secondary core purification module, a tertiary deep purification module is added. Through an adsorption-photocatalysis composite component, a closed-loop treatment of residual trace pollutants through "adsorption-oxidation-regeneration" is achieved. The linkage transmission mechanism ensures the efficient pretreatment of the first two modules, laying the foundation for the deep purification of the tertiary deep purification module. This significantly improves the removal efficiency of difficult-to-treat pollutants such as low-concentration VOCs and ultrafine particulate matter. Compared with existing single adsorption or photocatalysis technologies, the purification is more thorough and can stably meet the requirements for ultra-low emissions.

[0032] This invention enhances system synergy, reduces maintenance costs, and ensures continuous operation: the linkage transmission mechanism drives the primary pre-purification module and the secondary core purification module to operate synchronously via a drive motor and a distribution gear set. Compared to the existing multi-drive independent operation structure, this simplifies the equipment structure, reduces energy consumption and equipment size, and avoids problems such as airflow turbulence and excessive pressure loss caused by asynchronous operation. At the same time, the intelligent monitoring and control unit monitors the operating status of each module in real time and automatically controls the opening of the discharge port solenoid valve based on the pressure sensor signal, realizing automatic cleaning of pollutants. This eliminates the need for regular manual shutdowns for maintenance, shortens the maintenance cycle, reduces maintenance costs, and ensures the continuity and stability of the treatment process.

[0033] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall architecture of the present invention;

[0035] Figure 2 This is a schematic diagram of the internal structure of the air intake mechanism of the present invention;

[0036] Figure 3 This is a schematic diagram of the internal structure of the air outlet mechanism of the present invention;

[0037] Figure 4 This is a schematic diagram of the internal structure of the primary pre-purification module of the present invention;

[0038] Figure 5 This is a schematic diagram of the internal structure of the secondary core purification module of the present invention;

[0039] Figure 6 This is a schematic diagram of the internal structure of the three-stage deep purification module of the present invention;

[0040] Figure 7 This is a schematic diagram of the internal structure of the linkage transmission mechanism of the present invention;

[0041] Figure 8 This is a schematic diagram of the internal structure of the intelligent monitoring and control unit of the present invention.

[0042] In the diagram: 1. Sealed housing; 2. Air inlet mechanism; 3. Air outlet mechanism; 4. Primary pre-purification module; 41. Rotary graded filter cartridge assembly; 5. Secondary core purification module; 51. Pulsed plasma generator assembly; 52. Catalytic rotor assembly; 6. Tertiary deep purification module; 61. Adsorption-photocatalytic composite assembly; 7. Linkage transmission mechanism; 71. Drive motor; 72. Main drive shaft; 73. Distribution gear set; 8. Intelligent monitoring and control unit. Detailed Implementation

[0043] The present invention will be further described below with reference to embodiments.

[0044] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0045] Please see Figure 1-8 The present invention provides an air treatment device for multi-source purification of atmospheric pollution, including a sealed housing 1, an air inlet mechanism 2 on one side of the sealed housing 1, and an air outlet mechanism 3 on the other side of the sealed housing 1.

[0046] Inside the sealed housing 1, a primary pre-purification module 4, a secondary core purification module 5, and a tertiary deep purification module 6 are detachably connected sequentially along the airflow direction.

[0047] It also includes a linkage transmission mechanism 7 and an intelligent monitoring and control unit 8. The linkage transmission mechanism 7 runs through the primary pre-purification module 4 and the secondary core purification module 5 and is driven by both. The intelligent monitoring and control unit 8 is connected to the air inlet mechanism 2, the linkage transmission mechanism 7, the air outlet mechanism 3, and each purification module.

[0048] The first-level pre-purification module 4 includes a rotating graded filter cartridge assembly 41; the second-level core purification module 5 includes a pulsed plasma generator assembly 51 and a catalytic rotor assembly 52; and the third-level deep purification module 6 includes an adsorption-photocatalytic composite assembly 61.

[0049] The intelligent monitoring and control unit 8 adjusts the operating parameters of the linkage transmission mechanism 7 and the working status of each module based on the pollutant concentration signals at the inlet and outlet of each module.

[0050] In this embodiment, the integrated design of "sealed housing 1 + three-stage purification modules (4 / 5 / 6) + linkage transmission mechanism 7 + intelligent monitoring and control unit 8" solves the core pain points of existing technologies from a structural perspective. The sealed housing 1 ensures the airtightness of the purification process, preventing secondary pollution caused by pollutant leakage, and provides a stable physical space for the coordinated operation of each module. The symmetrical arrangement of the air inlet mechanism 2 and the air outlet mechanism 3, combined with the airflow guidance design of the subsequent purification modules, forms a smooth pollution treatment channel. The progressive layout of the three-stage purification modules along the airflow direction realizes a step-by-step pollution control logic of "coarse treatment - fine treatment - deep treatment", covering all types of pollution targets such as particulate matter, multi-component gaseous pollutants, and trace residual pollutants. This invention breaks through the limitations of existing single modules that can only handle specific pollutants; the linkage transmission mechanism 7 runs through the core purification module, providing a power foundation for the coordinated operation of each module and avoiding the problem of poor synchronization in the independent operation of traditional multi-module systems; the intelligent monitoring and control unit 8 connects with the signals of each component, constructing a closed-loop system of "monitoring-feedback-control", enabling the equipment to dynamically adjust its operating status according to the actual pollution situation, greatly improving its adaptability to multi-source and variable concentration pollution scenarios; overall, the core architecture built by this claim provides support for the efficient operation of subsequent functional modules, achieving an integrated effect of "structural synergy-functional complementarity-intelligent adaptation", laying the foundation for the core advantages of the entire device: high purification efficiency, wide applicability, and stable operation.

[0051] Specifically, the linkage transmission mechanism 7 includes a drive motor 71, a main drive shaft 72, and several transfer gear sets 73. The drive motor 71 is fixed outside the sealed housing 1, and its output end is connected to one end of the main drive shaft 72. The other end of the main drive shaft 72 extends into the sealed housing 1 and is driven and connected to the rotary grading filter cartridge assembly 41 of the first-stage pre-purification module 4 and the catalytic rotor assembly 52 of the second-stage core purification module 5 through the transfer gear sets 73.

[0052] In this embodiment, the specific composition and connection relationship of the linkage transmission mechanism 7 are clarified. Through the single-drive multi-output design of "drive motor 71 + main drive shaft 72 + transfer gear set 73", synchronous drive of the primary pre-purification module 4 and the secondary core purification module 5 is realized, significantly improving the synergy of system operation. Compared with the design of each module being independently equipped with drive components in the prior art, this structure greatly simplifies the complexity of the transmission system, reduces equipment size and energy consumption, and lowers equipment manufacturing and operating costs. The external design of drive motor 71 facilitates maintenance and repair, and avoids the impact of internal pollution environment on the stability of motor operation. The drive shaft 72, which runs through the housing, ensures efficient and stable power transmission. The precise drive of the rotary stage filter assembly 41 and the catalytic rotor assembly 52 by the transfer gear set 73 ensures that the operating rhythm of the two core functional components is matched. The particulate matter separation efficiency of the pre-purification module and the gaseous pollutant degradation efficiency of the core purification module complement each other, avoiding the problem of overloading the downstream stage due to untimely pre-treatment or wasting the downstream catalyst due to excessively fast pre-treatment. From the perspective of power transmission, the continuity of the "pre-separation-targeted degradation" process is guaranteed, providing key power support for improving the purification efficiency and operational stability of the entire device.

[0053] Specifically, the drive gear set 73 includes a main gear, driven gear one, and driven gear two. The main gear is mounted on the main drive shaft 72. Driven gear one is fixedly connected to the central shaft one of the rotating grading filter cartridge assembly 41 and meshes with the main gear. Driven gear two is fixedly connected to the central shaft two of the catalytic rotor assembly 52 and meshes with the main gear. The transmission ratio of the main gear, driven gear one, and driven gear two is adjustable.

[0054] In this embodiment, the gear composition and adjustable transmission ratio of the distributed gear set 73 are clearly defined, giving the device a flexible adaptability to complex pollution scenarios; the meshing structure of the main gear, driven gear one, and driven gear two ensures the accuracy and stability of power transmission, allowing the rotational speeds of the rotary classifying filter cartridge assembly 41 and the catalytic rotor assembly 52 to be independently adjusted according to actual needs without interference; the adjustable transmission ratio design overcomes the limitations of existing fixed transmission structures—when the particulate matter concentration in the incoming air pollutants is high, the transmission ratio of driven gear one can be increased to accelerate the rotation of the rotary classifying filter cartridge assembly 41. Rotation speed enhances centrifugal force and filtration effect, rapidly reducing particulate load. When the concentration of gaseous pollutants is high or the composition is complex, the transmission ratio of driven gear 2 can be adjusted to optimize the rotation speed of catalytic rotor assembly 52, prolonging the contact time between pollutants and catalyst and improving targeted degradation efficiency. This flexible control feature allows the device to adapt to the dynamic changes in pollutant concentration and composition under different scenarios such as industrial flue gas and urban dust, avoiding the problem of incomplete treatment of some pollution types under a single rotation speed. This further enhances the adaptability of the device to multi-source complex pollution and ensures the stability of purification effect under different operating conditions.

[0055] Specifically, the rotating grading filter cartridge assembly 41 of the primary pre-purification module 4 includes several coaxially arranged annular filter plates. The pore size of each annular filter plate gradually decreases along the airflow direction. The edges of the annular filter plates are fixed to the central shaft through a connecting frame. The two ends of the central shaft are detachably connected to the sealing housing 1 through bearings.

[0056] In this embodiment, the rotating grading filter cartridge assembly 41 of the primary pre-purification module 4 has undergone structural optimization. Through a design of "coaxial annular filter + decreasing pore size + central shaft drive," efficient grading and separation of particulate matter is achieved, reducing the burden on subsequent core purification modules. Several coaxially arranged annular filter cartridges, combined with gradually decreasing pore sizes along the airflow direction, form a stepped filtration structure of "coarse filtration - fine filtration." Large-diameter particles (such as PM10) are quickly intercepted at the front large-pore filter cartridge, while medium-diameter particles (such as PM2.5) are precisely captured at the rear small-pore filter cartridge, avoiding the problems of easy clogging and low filtration efficiency of single-pore size filters. The fixed connection between the annular filter cartridge and the central shaft, combined with the linkage transmission mechanism 7... The drive generates centrifugal force in the filter cartridge assembly during operation, which enhances the separation effect between particulate matter and the filter, especially improving the removal efficiency of fine particulate matter. On the other hand, centrifugal force reduces the adhesion of particulate matter to the filter pore surface, delays filter pore clogging, and extends the service life of the filter cartridge assembly. The detachable connection design between the central shaft and the sealing shell facilitates the disassembly, cleaning, and replacement of the filter cartridge assembly, reducing maintenance costs. This allows the pre-purification module to not only efficiently separate particulate matter but also retain some easily condensable gaseous pollutant precursors, significantly reducing the processing load of the subsequent secondary core purification module 5. It also avoids the problem of catalyst activity decay caused by the mixing of gaseous pollutants and a large amount of particulate matter, laying the foundation for the efficient operation of the entire purification system.

[0057] Specifically, the pulsed plasma generating component 51 of the secondary core purification module 5 includes several discharge electrodes evenly distributed circumferentially along the catalytic rotor component 52, and the discharge electrodes are electrically connected to the high-voltage pulse power supply; the catalytic support of the catalytic rotor component 52 is a honeycomb ceramic matrix, and the surface of the matrix is ​​loaded with a composite metal oxide catalyst.

[0058] In this embodiment, the focus is on optimizing the function of the secondary core purification module 5. Through the synergistic structure of "pulse plasma generator 51 + catalytic rotor 52", targeted and efficient degradation of low-to-medium concentration multi-component gaseous pollutants is achieved. In the pulse plasma generator 51, the discharge electrodes uniformly distributed circumferentially along the catalytic rotor 52 can generate high-density high-energy particles (such as hydroxyl radicals, ozone, etc.). These high-energy particles can rapidly collide with gaseous pollutant molecules (such as VOCs, NOx), breaking their chemical covalent bonds and converting stable pollutant molecules into active intermediates, creating favorable conditions for subsequent catalytic degradation and solving the problem of low degradation efficiency of stable pollutant molecules in traditional catalytic technology. The honeycomb ceramic matrix used in the catalytic rotor 52 has a large specific surface area and high mass transfer efficiency. The high efficiency provides ample space for catalyst adhesion while ensuring smooth airflow. The surface-loaded composite metal oxide catalyst exhibits targeted catalytic activity for different types of gaseous pollutants, enabling the simultaneous degradation of multiple components such as VOCs, NOx, and sulfides. This overcomes the limitation of single catalysts only being able to treat specific pollutants. The continuous rotation of the catalytic rotor, driven by the linkage transmission mechanism 7, ensures full contact between the catalyst surface and the active intermediate, avoiding local catalyst activity decay due to excessive pollutant adhesion. This ensures the stability of catalytic degradation efficiency and achieves synergistic effects of "plasma activation + catalytic degradation," significantly improving the removal efficiency of low-to-medium concentration multi-component gaseous pollutants and addressing the pain point of incomplete treatment of complex gaseous pollution in existing technologies.

[0059] Specifically, the adsorption-photocatalytic composite component 61 of the three-stage deep purification module 6 includes an adsorption layer and a photocatalytic layer, which are alternately arranged; the adsorption layer is made of modified activated carbon material, the photocatalytic layer is made of porous ceramic material loaded with TiO2, and an ultraviolet light source is provided on one side of the photocatalytic layer.

[0060] In this embodiment, an innovative design was implemented for the adsorption-photocatalytic composite component 61 of the three-stage deep purification module 6. Through an alternating arrangement of "adsorption layer + photocatalytic layer + ultraviolet light source," the complete removal of residual trace pollutants and in-situ regeneration of the adsorbent are achieved, meeting ultra-low emission requirements. The modified activated carbon material used in the adsorption layer has a large specific surface area and high adsorption capacity, enabling rapid capture of residual trace pollutants (such as small molecule VOCs and ultrafine particulate matter) after secondary purification, avoiding the problem of substandard purification caused by direct emission of trace pollutants. The photocatalytic layer uses a TiO2-supported porous ceramic material, which generates strong oxidizing free radicals under ultraviolet light irradiation, capable of removing pollutants adsorbed by the adsorption layer. Pollutants are completely oxidized and decomposed into harmless substances such as CO2 and H2O, while simultaneously achieving in-situ regeneration of the activated carbon adsorbent. This solves the problems of easy saturation and frequent replacement required by traditional activated carbon adsorption devices, extends the service life of the adsorption layer, and reduces operating costs. The alternating arrangement of the adsorption layer and the photocatalytic layer forms a closed-loop treatment process of "adsorption-oxidation-regeneration," ensuring the continuous effectiveness of deep purification. The selection of porous ceramic materials not only ensures smooth airflow but also increases the contact area of ​​the photocatalytic reaction, filling the gap in existing technologies for the deep treatment of trace pollutants. This enables the device to stably meet ultra-low emission standards, making it particularly suitable for scenarios such as industrial parks and urban core areas with strict emission requirements.

[0061] Specifically, the intelligent monitoring and control unit 8 includes several pollutant concentration sensors, temperature sensors, pressure sensors, and a controller. The pollutant concentration sensors are respectively installed at the outlet of the air inlet mechanism 2, the inlet and outlet of the primary pre-purification module 4, the inlet and outlet of the secondary core purification module 5, the inlet and outlet of the tertiary deep purification module 6, and the inlet of the air outlet mechanism 3. The signal output terminals of each sensor are connected to the signal input terminals of the controller, and the signal output terminals of the controller are electrically connected to the drive motor 71, the high-voltage pulse power supply, the ultraviolet light source, and the drive components of the air inlet mechanism 2 and the air outlet mechanism 3.

[0062] In this embodiment, a full-process intelligent monitoring and control system is constructed. Through the design of "multi-type sensors + controller + multi-component linkage", adaptive adjustment and precise control of the purification process are achieved, significantly improving the operational stability and intelligence level of the device. The pollutant concentration sensors are deployed at multiple points at the outlet of the air inlet mechanism 2, the inlets and outlets of each module, and the inlet of the air outlet mechanism 3, enabling real-time capture of pollutant concentration data at each purification stage, forming a full-process pollution monitoring chain and providing accurate basis for control decisions. The configuration of temperature and pressure sensors allows for real-time monitoring of equipment operation status and timely detection of abnormal conditions (such as excessively high temperature or excessive pressure loss). The controller, as the core control unit, receives signals from various sensors. This intelligent control system can precisely adjust the operating parameters of the linkage transmission mechanism 7 (such as rotation speed), the output power of the high-voltage pulse power supply, the intensity of the ultraviolet light source, and the rotation speed of the inlet and outlet fans, achieving dynamic matching of "pollution concentration - equipment operating parameters". When the pollutant concentration exceeds the standard at a certain stage, the operating status of the corresponding module can be adjusted in real time to avoid pollutant leakage. When the equipment operating status is abnormal, the parameters can be adjusted in time to ensure operational safety. This intelligent control system solves the problems of existing devices relying on manual operation and lagging control, enabling the device to autonomously adapt to the dynamic changes of pollution load, ensuring stable and compliant purification effects, while reducing the intensity of manual operation and the risk of misoperation, providing a core guarantee for the automated and continuous operation of the device.

[0063] Specifically, each of the bottom of the sealed housing 1 has a drain port corresponding to the position of each purification module. A solenoid valve is installed at the drain port, and the solenoid valve is connected to the intelligent monitoring and control unit 8.

[0064] In this embodiment, by setting a drain port at the bottom of the sealed housing 1 and a solenoid valve linked to the intelligent monitoring and control unit 8, automatic cleaning of pollutants and maintenance without downtime are achieved, solving the pain points of existing devices that require regular manual shutdowns for inspection and maintenance and have high maintenance costs. The drain port is designed to correspond to the position of each purification module, ensuring that pollutants such as particulate matter intercepted by the primary pre-purification module 4 and reaction residues generated by the secondary core purification module 5 can be accurately collected and discharged, avoiding problems such as airflow turbulence and module blockage caused by pollutant accumulation in the housing. The signal connection between the solenoid valve and the intelligent monitoring and control unit 8 enables the sewage discharge process to be automatically triggered according to the equipment's operating status. When the pressure sensor detects that the pressure difference before and after each module reaches a preset threshold, it is determined that too much pollutant has accumulated in the module, and the controller then controls the solenoid valve of the corresponding drain port to open, realizing the automatic discharge of pollutants. After the sewage discharge is completed, the solenoid valve automatically closes, and the equipment can resume normal operation without shutdown. This design significantly shortens the maintenance cycle, reduces manual maintenance costs, and avoids the problem of treatment interruption caused by downtime maintenance, ensuring the continuity of air pollution control, and is especially suitable for scenarios such as industrial flue gas that require 24-hour continuous treatment.

[0065] Specifically, the air intake mechanism 2 includes an air intake duct and an air intake fan, and the air intake duct is equipped with a baffle plate; the air outlet mechanism 3 includes an air outlet duct and an air outlet fan, and the air outlet duct is equipped with a silencer component.

[0066] In this embodiment, the structural details of the air inlet mechanism 2 and the air outlet mechanism 3 have been optimized. The design of "guide plate + silencer component" improves the purification efficiency and environmental adaptability respectively. The guide plate in the air inlet duct can guide the uniform distribution of polluted air, avoiding the problem of some purification modules being overloaded and some modules being underutilized due to concentrated airflow. This ensures that components such as the annular filter of the first-stage pre-purification module 4 and the catalytic rotor of the second-stage core purification module 5 can fully contact the airflow and maximize the purification efficiency. The configuration of the air inlet fan and the air outlet fan provides stable power for the airflow and ensures the smooth progress of the purification process. The silencer component in the air outlet duct can effectively reduce the noise generated during equipment operation (such as fan noise and airflow disturbance noise), solving the problem of high operating noise and impact on the surrounding environment of existing purification devices. This makes the device suitable not only for industrial plants, but also for urban dust control, pollution control around industrial parks, and other scenarios with high noise control requirements. The device's practicality is improved from the two dimensions of airflow optimization and noise control, ensuring purification efficiency while reducing secondary impact on the environment and further broadening the device's application scope.

[0067] An air pollution multi-source purification method, applied to the air pollution multi-source purification device of the above embodiments, includes the following steps:

[0068] S1. Start-up device: Intelligent monitoring and control unit 8 detects the concentration of pollutants in the incoming air and drives the rotating graded filter cartridge assembly 41 of the first-level pre-purification module 4 and the catalytic rotor assembly 52 of the second-level core purification module 5 to operate synchronously through linkage transmission mechanism 7.

[0069] S2. Polluted air enters the first-stage pre-purification module 4 through the air intake mechanism 2. The rotating graded filter cartridge assembly 41 separates large particulate pollutants and some easily condensable gaseous pollutant precursors in the air through centrifugal force and filtration.

[0070] S3. The pre-purified air enters the secondary core purification module 5. The pulse plasma generator 51 generates high-energy particles to activate pollutant molecules. The catalytic rotor 52 rotates continuously under the drive of the linkage transmission mechanism 7, so that the activated pollutants come into full contact with the catalyst and undergo a degradation reaction.

[0071] S4. The air purified by the second stage enters the third stage deep purification module 6, where the adsorption-photocatalytic composite component 61 adsorbs and photocatalytically oxidizes and decomposes the residual trace pollutants.

[0072] S5, the intelligent monitoring and control unit 8 monitors the pollutant concentration at the outlet of the three-stage deep purification module 6 in real time. If the concentration meets the standard, it is discharged through the air outlet mechanism 3; if the concentration does not meet the standard, the operating parameters of the linkage transmission mechanism 7 and the working status of each module are adjusted until the concentration meets the standard and then discharged.

[0073] S6. During operation, the intelligent monitoring and control unit 8 periodically controls the opening of the sewage outlet solenoid valve based on the pressure sensor signal to discharge the pollutants collected by each module.

[0074] In this embodiment, based on the aforementioned device architecture, a three-stage progressive purification method of "pre-separation - targeted degradation - deep polishing" is constructed. Through six consecutive steps, it achieves efficient treatment of multi-source pollutants throughout the entire process, forming a complete operating system of "start-up - purification - regulation - maintenance." The design of the startup initialization step S1 enables the device to formulate initial operating parameters based on the concentration of pollutants in the incoming air, ensuring a precise start-up of the purification process. In the pre-separation stage of step S2, the centrifugal force and filtration effect of the rotating graded filter cartridge assembly 41 efficiently reduce the particulate load, lightening the burden for subsequent core purification. In the targeted degradation stage of step S3, the synergistic effect of pulsed plasma and the catalytic rotor is utilized to achieve… The method achieves efficient decomposition of multi-component gaseous pollutants; in the deep polishing stage of step S4, trace residual pollutants are thoroughly removed through closed-loop treatment of the adsorption-photocatalysis composite component 61; the closed-loop control in step S5 ensures stable and compliant emissions of purified air, preventing pollutant leakage; and the automatic sewage discharge in step S6 ensures long-term continuous operation of the equipment. This method combines the functional advantages of each module with intelligent control to form a process-oriented and systematic pollution control solution. It solves the problems of discontinuous processes, incomplete treatment, and cumbersome maintenance in existing purification methods. It can be adapted to various scenarios such as industrial flue gas, urban dust, and complex pollution in industrial parks, achieving stable, efficient, and low-maintenance treatment of multi-source pollutants.

[0075] Working principle and usage process of this invention:

[0076] Start-up and initialization: The operator turns on the main switch of the equipment, the controller of the intelligent monitoring and control unit 8 initializes each component, the air intake fan of the air intake mechanism 2 and the air outlet fan of the air outlet mechanism 3 start, the pollutant concentration sensor, temperature sensor and pressure sensor start to collect data in real time, and the controller preliminarily determines the operating parameters of the linkage transmission mechanism 7 based on the pollutant concentration sensor signal at the outlet of the air intake mechanism 2.

[0077] Linkage drive start: The controller controls the drive motor 71 to start, and the drive motor 71 drives the main drive shaft 72 to rotate. The main gear on the main drive shaft 72 drives the rotating graded filter cartridge assembly 41 of the first-stage pre-purification module 4 and the catalytic rotor assembly 52 of the second-stage core purification module 5 to rotate synchronously through the distribution gear set 73 (the main gear meshes with driven gear one and driven gear two respectively). The initial speed is set according to the concentration of pollutants in the air (if the concentration of pollutants is high, the speed is appropriately increased to improve the treatment efficiency).

[0078] First-stage pre-purification process: Polluted air enters the sealed housing 1 through the air inlet duct of the air inlet mechanism 2. The guide plate in the air inlet duct makes the airflow flow evenly to the first-stage pre-purification module 4. The rotating staged filter cartridge assembly 41 rotates at high speed under the drive of the linkage transmission mechanism 7, generating centrifugal force. Large-diameter particles (such as PM10) in the air are thrown to the outside of the annular filter under the action of centrifugal force and slide down along the inner wall of the filter cartridge to the drain port at the bottom of the sealed housing 1. Medium-diameter particles (such as PM2.5) pass through the front large-diameter filter under the action of airflow and are intercepted by the rear small-diameter filter. Some easily condensable gaseous pollutant precursors (such as some VOCs derivatives) condense on the surface of the filter and slide down with the particles, thus achieving pre-purification.

[0079] Secondary core purification process: Pre-purified air enters the secondary core purification module 5. The controller adjusts the output power of the high-voltage pulse power supply based on the pollutant concentration sensor signal at the outlet of the primary pre-purification module 4, so that the discharge electrode of the pulse plasma generator 51 generates high-energy particles (such as hydroxyl radicals, ozone, etc.). The high-energy particles collide with gaseous pollutant molecules (such as VOCs, NOx), breaking their chemical covalent bonds and converting them into active intermediates. At the same time, the catalytic rotor assembly 52 rotates continuously under the drive of the linkage transmission mechanism 7. The active intermediates come into full contact with the composite metal oxide catalyst on the surface of the catalytic rotor, undergoing redox reactions and converting into harmless substances such as CO2, H2O, and N2, achieving targeted degradation of multi-component gaseous pollutants.

[0080] The three-stage deep purification process: The air purified by the second-stage core enters the third-stage deep purification module 6. First, it passes through the adsorption layer of the adsorption-photocatalytic composite component 61. The modified activated carbon material in the adsorption layer quickly adsorbs residual trace pollutants (such as incompletely degraded small molecule VOCs and ultrafine particulate matter). Then, the controller turns on the ultraviolet light source. The TiO2 porous ceramic material loaded in the photocatalytic layer generates strong oxidizing free radicals under ultraviolet light irradiation, which oxidizes and decomposes the pollutants adsorbed by the adsorption layer. At the same time, it realizes the in-situ regeneration of the activated carbon adsorbent, avoids adsorption saturation, and ensures the continuous effectiveness of deep purification.

[0081] Emission Compliance and Closed-Loop Control: The controller monitors the pollutant concentration sensor signal at the outlet of the three-stage deep purification module 6 in real time. If the pollutant concentration is detected to meet the preset emission standard, the controller controls the outlet fan of the outlet mechanism 3 to maintain the current speed. The purified air is discharged after noise reduction by the silencer component in the outlet duct. If the standard is not met, the controller adjusts the transmission ratio of the linkage transmission mechanism 7 to increase the speed of the rotating stage filter cartridge assembly 41 and the catalytic rotor assembly 52. ​​At the same time, the controller increases the output power of the high-voltage pulse power supply and the intensity of the ultraviolet light source until the pollutant concentration meets the standard and then the emission is stable.

[0082] Automatic sewage discharge and maintenance: During operation, pressure sensors monitor the pressure difference before and after each purification module (primary pre-purification module 4, secondary core purification module 5, and tertiary deep purification module 6) in real time. When the pressure difference reaches a preset threshold (indicating excessive accumulation of pollutants in the module), the controller controls the solenoid valve of the corresponding sewage discharge port to open and discharge the accumulated pollutants. After sewage discharge is completed, the solenoid valve closes and the equipment continues to operate normally, achieving automatic maintenance without shutdown.

[0083] Shutdown process: When the treatment task is completed or maintenance is required, the operator turns off the main switch of the equipment. The controller controls each component to shut down in sequence. First, the air intake fan and drive motor 71 of the air intake mechanism 2 are turned off. After each purification module stops running, the high-voltage pulse power supply, ultraviolet light source and air outlet fan of the air outlet mechanism 3 are turned off. Finally, data storage and system initialization are completed.

[0084] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An air purification device for multi-source air pollution, characterized in that, It includes a sealed housing (1), an air inlet mechanism (2) on one side of the sealed housing (1), and an air outlet mechanism (3) on the other side of the sealed housing (1). The sealed housing (1) is detachably connected in sequence along the airflow direction to a first-level pre-purification module (4), a second-level core purification module (5), and a third-level deep purification module (6). It also includes a linkage transmission mechanism (7) and an intelligent monitoring and control unit (8). The linkage transmission mechanism (7) runs through the first-level pre-purification module (4) and the second-level core purification module (5) and is driven and connected to both. The intelligent monitoring and control unit (8) is connected to the air inlet mechanism (2), the linkage transmission mechanism (7), the air outlet mechanism (3) and each purification module. The first-level pre-purification module (4) includes a rotating graded filter cartridge assembly (41), the second-level core purification module (5) includes a pulsed plasma generator assembly (51) and a catalytic rotor assembly (52), and the third-level deep purification module (6) includes an adsorption-photocatalytic composite assembly (61). The intelligent monitoring and control unit (8) adjusts the operating parameters of the linkage transmission mechanism (7) and the working status of each module according to the pollutant concentration signals at the inlet and outlet of each module.

2. The air purification device for multi-source air pollution as described in claim 1, characterized in that, The linkage transmission mechanism (7) includes a drive motor (71), a main drive shaft (72) and several transfer gear sets (73). The drive motor (71) is fixed outside the sealed housing (1), and its output end is connected to one end of the main drive shaft (72). The other end of the main drive shaft (72) extends into the sealed housing (1) and is driven and connected to the rotating graded filter cartridge assembly (41) of the first-level pre-purification module (4) and the catalytic rotor assembly (52) of the second-level core purification module (5) through the transfer gear sets (73).

3. The air purification device for multi-source air pollution as described in claim 2, characterized in that, The drive gear set (73) includes a main gear, driven gear one and driven gear two. The main gear is sleeved on the main drive shaft (72). Driven gear one is fixedly connected to the central shaft one of the rotating grading filter cartridge assembly (41) and meshes with the main gear. Driven gear two is fixedly connected to the central shaft two of the catalytic rotor assembly (52) and meshes with the main gear. The transmission ratio of the main gear, driven gear one and driven gear two is adjustable.

4. The air purification device for multi-source air pollution as described in claim 1, characterized in that, The rotating graded filter cartridge assembly (41) of the primary pre-purification module (4) includes several coaxially arranged annular filter plates. The pore size of each annular filter plate gradually decreases along the airflow direction. The edge of the annular filter plate is fixed to the central shaft through a connecting frame. The two ends of the central shaft are detachably connected to the sealing housing (1) through bearings.

5. The air purification device for multi-source air pollution as described in claim 1, characterized in that, The pulsed plasma generating component (51) of the secondary core purification module (5) includes several discharge electrodes evenly distributed circumferentially along the catalytic rotor component (52), and the discharge electrodes are electrically connected to a high-voltage pulse power supply; the catalytic support of the catalytic rotor component (52) is a honeycomb ceramic matrix, and the surface of the matrix is ​​loaded with a composite metal oxide catalyst.

6. The air purification device for multi-source air pollution as described in claim 1, characterized in that, The adsorption-photocatalytic composite component (61) of the three-level deep purification module (6) includes an adsorption layer and a photocatalytic layer, with the adsorption layer and photocatalytic layer alternately arranged; the adsorption layer is made of modified activated carbon material, the photocatalytic layer is made of porous ceramic material loaded with TiO2, and an ultraviolet light source is provided on one side of the photocatalytic layer.

7. The air purification device for multi-source air pollution as described in claim 1, characterized in that, The intelligent monitoring and control unit (8) includes several pollutant concentration sensors, temperature sensors, pressure sensors and controllers. The pollutant concentration sensors are respectively installed at the outlet of the air inlet mechanism (2), the inlet and outlet of the first-level pre-purification module (4), the inlet and outlet of the second-level core purification module (5), the inlet and outlet of the third-level deep purification module (6) and the inlet of the air outlet mechanism (3). The signal output terminal of each sensor is connected to the signal input terminal of the controller. The signal output terminal of the controller is electrically connected to the drive motor (71), the high-voltage pulse power supply, the ultraviolet light source and the drive components of the air inlet mechanism (2) and the air outlet mechanism (3).

8. The air purification device for multi-source air pollution as described in claim 1, characterized in that, The bottom of the sealed housing (1) is provided with a drain port corresponding to each purification module position. A solenoid valve is provided at the drain port, and the solenoid valve is connected to the intelligent monitoring and control unit (8) for signal connection.

9. The air purification device for multi-source air pollution as described in claim 1, characterized in that, The air intake mechanism (2) includes an air intake duct and an air intake fan, and a guide plate is provided inside the air intake duct; the air outlet mechanism (3) includes an air outlet duct and an air outlet fan, and a silencer is provided inside the air outlet duct.

10. An air treatment method for multi-source air pollution purification, applied to the air treatment device for multi-source air pollution purification as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Start-up device, intelligent monitoring and control unit (8) detects the concentration of pollutants in the incoming air, and drives the rotating graded filter cartridge assembly (41) of the first-level pre-purification module (4) and the catalytic rotor assembly (52) of the second-level core purification module (5) to run synchronously through linkage transmission mechanism (7); S2. Polluted air enters the first-level pre-purification module (4) through the air intake mechanism (2). The rotating graded filter cartridge assembly (41) separates large particulate pollutants and some easily condensable gaseous pollutant precursors in the air through centrifugal force and filtration. S3. The pre-purified air enters the secondary core purification module (5). The pulse plasma generator (51) generates high-energy particles to activate pollutant molecules. The catalytic rotor assembly (52) rotates continuously under the drive of the linkage transmission mechanism (7), so that the activated pollutants can fully contact the catalyst and undergo degradation reaction. S4. The air purified by the second stage enters the third stage deep purification module (6), where the adsorption-photocatalytic composite component (61) adsorbs and photocatalytically oxidizes and decomposes the residual trace pollutants. S5. The intelligent monitoring and control unit (8) detects the pollutant concentration at the outlet of the three-level deep purification module (6) in real time. If the standard is met, the pollutant is discharged through the air outlet mechanism (3). If the standard is not met, the operating parameters of the linkage transmission mechanism (7) and the working status of each module are adjusted until the standard is met and the pollutant is discharged. S6. During operation, the intelligent monitoring and control unit (8) controls the opening of the sewage outlet solenoid valve periodically according to the pressure sensor signal to discharge the pollutants collected by each module.

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