High-frequency dust separation heat inactivation device, cleaning vehicle and cleaning method

Abstract

The application discloses a high-frequency dust separation and thermal inactivation device, a cleaning vehicle and a cleaning method. The high-frequency dust separation and thermal inactivation device comprises a centrifugal fan and a cyclone separator assembly. The cyclone separator assembly comprises a cyclone separator and an electromagnetic heater. The outlet of the centrifugal fan is connected with the inlet of the cyclone separator. The electromagnetic heater is arranged on the outer ring of the cyclone separator. The high-frequency dust separation and thermal inactivation device can realize thermal inactivation and disinfection while separating dust at high frequency, and can kill viruses, bacteria and other pathogenic microorganisms in the dust. The cleaning vehicle and the cleaning method with the high-frequency dust separation and thermal inactivation device can disinfect viruses, bacteria and other pathogenic microorganisms on the road surface while cleaning the road surface, and can realize the cleaning vehicle with the functions of road cleaning, dust and garbage collection, heating, disinfection and most importantly virus inactivation, so as to effectively block the transmission path of viruses and bacteria.

Description

Technical Field

[0001] This invention relates to the field of cleaning technology, specifically to a high-frequency dust separation and thermal inactivation device, a sweeper, and a sweeping method. Background Technology

[0002] Sweepers are commonly used to remove debris from streets, parking lots, airport runways, and other roads. Sweeping roads and sidewalks is one of the preventative and control measures to reduce road dust particle emissions. In the road cleaning industry, there are three main types of sweepers used to remove dirt and debris from road or sidewalk surfaces: mechanical sweepers, vacuum sweepers, and regenerative air sweepers. The widespread use of regenerative air sweepers is one of the potentially effective and cost-effective strategies for reducing road dust generation and emissions. This type of sweeper is a closed-loop system in which a blower generates a controlled, high-speed airflow.

[0003] These sweepers have significant design limitations because they are not designed to target dirt and debris that carry viruses, germs, and other pathogens on road surfaces.

[0004] In recent years, with the influx and outbreak of epidemics, disinfectants used to prevent the spread of viruses and infectious diseases have received considerable attention. Therefore, sweepers designed to combat epidemics have been developed to address these pressing challenges. However, under practical conditions, these vehicles have the following main application limitations based on their design: they cannot simultaneously disinfect and inactivate viruses and bacteria while removing road dust particles. The technology for traditional road sweepers to remove viruses, bacteria, and other pathogenic microorganisms attached to the road surface has not been fully studied or implemented.

[0005] To overcome the shortcomings of the aforementioned technologies, there is an urgent need to develop a sweeper that integrates functions such as road cleaning, dust and garbage collection, heating, disinfection, and, most importantly, virus inactivation. Highly pathogenic viruses and other microorganisms on road surfaces have become a focus of attention, including potential transmission routes through road dust particles. This problem is exacerbated by the fact that road dust particles easily carry viruses, bacteria, and other pathogenic microorganisms. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a high-frequency dust separation and thermal inactivation device, a sweeper and a sweeping method, which can achieve thermal inactivation and disinfection while separating high-frequency dust, and eliminate viruses, bacteria and other pathogenic microorganisms in the dust.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0008] A high-frequency dust separation and thermal inactivation device includes a centrifugal fan and a cyclone separator assembly. The cyclone separator assembly includes a cyclone separator and an electromagnetic heater. The outlet of the centrifugal fan is connected to the inlet of the cyclone separator, and the electromagnetic heater is disposed on the outer ring of the cyclone separator.

[0009] According to the above technical solution, the cyclone separator assembly also includes an air distribution valve. There are multiple cyclone separators, and the outlet of the centrifugal fan is connected to the inlet of multiple cyclone separators through the air distribution valve.

[0010] According to the above technical solution, the electromagnetic heater is fitted onto the outer wall of the cylindrical section of the cyclone separator.

[0011] According to the above technical solution, the electromagnetic heater includes an induction heating coil, a cylindrical metal wire mesh, and a cylindrical insulating cover, which are arranged sequentially from the inside to the outside.

[0012] According to the above technical solution, the electromagnetic heater also includes an electronic controller, which is connected to the induction heating coil.

[0013] According to the above technical solution, the high-frequency dust separation and thermal inactivation device also includes an air filter element, which is located at the inlet end of the centrifugal fan.

[0014] According to the above technical solution, a release valve is provided at the bottom of the cyclone separator.

[0015] A sweeper vehicle includes a mobile pickup head, a sweeper, and the aforementioned high-frequency dust separation and thermal inactivation device. The sweeper and the mobile pickup head are sequentially mounted on the chassis along the vehicle's travel direction and positioned close to the road surface. The sweeper moves or guides dust-laden sweeping material towards or to the path of the mobile pickup head. The centrifugal fan and cyclone separator of the high-frequency dust separation and thermal inactivation device are mounted on the chassis of the sweeper vehicle. The mobile pickup head is connected to the inlet of the centrifugal fan via a suction pipe. The outlet of the cyclone separator is connected to a high-temperature resistant air duct. The outlet of the high-temperature resistant air duct is connected to the recirculation pipe of the mobile pickup head, which heats the ground being swept.

[0016] According to the above technical solution, the chassis is also equipped with a waste container hopper, which contains an air filter element. The suction pipe is connected to the inlet end of the waste container hopper, and the outlet end of the waste container hopper is connected to a centrifugal fan.

[0017] A sweeping method using the sweeper described above involves the sweeper moving or guiding dust-laden debris to a mobile pickup head. The mobile pickup head's recirculation pipe sprays airflow, lifting and suspending the dust mixture on the ground. This allows the suction pipe connected to the mobile pickup head to draw the mixture from the ground into a waste container hopper. An air filter element in the waste container hopper filters out larger dust particles. The filtered dust mixture then enters a cyclone separator via a centrifugal fan. In the cyclone separator, the dust mixture is separated into an air mixture, which is then thermally inactivated and disinfected by an electromagnetic heater. The heated and disinfected air mixture exits the cyclone separator through a high-temperature resistant duct and is then discharged through the mobile pickup head's recirculation pipe, where airflow is sprayed to lift and suspend the dust mixture on the ground, thus achieving recycling.

[0018] The present invention has the following beneficial effects:

[0019] 1. This invention, by setting an electromagnetic heater on the outer ring of the cyclone separator, can achieve thermal inactivation and disinfection while separating high-frequency dust, thereby eliminating viruses, bacteria and other pathogenic microorganisms in the dust.

[0020] 2. By combining a high-frequency dust separation and thermal inactivation device with a sweeper, the sweeper can suck up road dust and perform high-frequency dust separation and thermal inactivation. It can disinfect viruses, bacteria and other pathogens on the road while sweeping the road, realizing a sweeper that integrates road cleaning, dust and garbage collection, heating, disinfection and, most importantly, virus inactivation, effectively blocking the transmission routes of viruses and bacteria. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a sweeper equipped with a high-frequency dust separation and thermal inactivation device in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the high-frequency dust separation and thermal inactivation device in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the cyclone separator assembly in an embodiment of the present invention;

[0024] Figure 4 This is a cross-sectional view of the cyclone separator assembly in an embodiment of the present invention;

[0025] Figure 5 This is a partial cross-sectional view of the induction heating coil in an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the dust mixture processing procedure in an embodiment of the present invention;

[0027] Figure 7This is a perspective view of the cyclone separator assembly in an embodiment of the present invention;

[0028] Figure 8 This is a perspective view of the cyclone separator in an embodiment of the present invention;

[0029] Figure 9 This is an explosion diagram of the electromagnetic heater in an embodiment of the present invention;

[0030] In the diagram, 1-Cyclone separator, 2-Cyclone separator assembly, 3-Hot air, 4-Electromagnetic heater, 5-Electronic controller, 6-Battery pack, 7-Manual release valve, 8-Outlet duct, 9-Centrifugal fan, 10-Air distribution valve, 11-Fan inlet, 12-Air mixture, 13-Air filter element, 14-Sludge container hopper, 15-Dust mixture, 16-Suction pipe, 17-Mobile pickup head, 17A-Pipeline. 18-Induction heating coil, 19-Cylindrical metal wire mesh, 20-Cylindrical insulating cover, 21-Cylindrical section of wall, 22-Conical section, 23-Bottom outlet, 24-Support frame, 25-Flange of nut, 27-Upward airflow, 34-Rotary sweeper, 35-High temperature resistant air duct, 36-Recirculation pipe, 37-Chassis, 38-First duct, 39-Second duct, 41-Third duct, 42-Circular groove, 45-Sweeper vehicle;

[0031] 1A - Cyclone inlet, 1B - Cyclone outlet. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] Reference Figures 3-5 and Figures 7-8 As shown, a high-frequency dust separation and thermal inactivation device in one embodiment 1 of the present invention includes a centrifugal fan 9 and a cyclone separator assembly 2. The cyclone separator assembly 2 includes a cyclone separator 1 and an electromagnetic heater 4. The outlet of the centrifugal fan 9 is connected to the inlet of the cyclone separator 1, and the electromagnetic heater 4 is disposed on the outer ring of the cyclone separator 1.

[0034] Furthermore, the cyclone separator assembly 2 also includes an air distribution valve 10. There are multiple cyclone separators 1, and the outlet of the centrifugal fan 9 is connected to the inlet of multiple cyclone separators 1 respectively through the air distribution valve 10.

[0035] Furthermore, the electromagnetic heater 4 is mounted on the outer wall of the cylindrical section of the cyclone separator 1.

[0036] Example 2

[0037] like Figure 9As shown, the specific structure of the electromagnetic heater is limited based on Example 1, and the performance of Example 2 is even better after the limitation.

[0038] Furthermore, the electromagnetic heater 4 includes an induction heating coil 18, a cylindrical metal wire mesh 19, and a cylindrical insulating cover 20, which are arranged sequentially from the inside out.

[0039] Furthermore, the induction heating coil 18 is coated with an insulating material.

[0040] Furthermore, the electromagnetic heater 4 also includes an electronic controller 5, which is connected to the induction heating coil 18.

[0041] Furthermore, the high-frequency dust separation and thermal inactivation device also includes an air filter element 13, which is disposed at the inlet end of the centrifugal fan 9.

[0042] Furthermore, a manual release valve is provided at the bottom of the cyclone separator 1.

[0043] Example 3

[0044] like Figures 1-2 As shown, a sweeper is provided based on embodiments 1 and 2.

[0045] A sweeper vehicle includes a mobile pickup head 17, a rotary sweeper 34, and the aforementioned high-frequency dust separation and thermal inactivation device. The rotary sweeper 34 and the mobile pickup head 17 are sequentially mounted on the chassis along the vehicle's travel direction and positioned close to the road surface. The rotary sweeper 34 moves or guides dust-laden sweeping material (dirt or debris) toward or towards the path of the mobile pickup head 17. The centrifugal fan 9 and cyclone separator 1 of the high-frequency dust separation and thermal inactivation device are mounted on the chassis of the sweeper vehicle. The mobile pickup head 17 is connected to the inlet of the centrifugal fan 9 via a suction pipe 16. The outlet of the cyclone separator is connected to a high-temperature resistant air duct 35. The outlet of the high-temperature resistant air duct 35 is connected to the recirculation pipe 36 of the mobile pickup head 17, which heats the ground being swept.

[0046] Furthermore, the chassis is also equipped with a waste container hopper 14, which contains an air filter element 13. The suction pipe is connected to the inlet end of the waste container hopper 14, and the outlet end of the waste container hopper 14 is connected to the centrifugal fan 9.

[0047] A sweeping method using the sweeper described above involves a rotary sweeper 34 moving or guiding dust-laden sweeping material (dirt or debris) to or guiding it to a mobile pickup head 17. The recirculation pipe 36 of the mobile pickup head 17 sprays airflow, lifting and suspending the dust mixture 15 from the ground, facilitating alignment and connection to the suction pipe 16 of the mobile pickup head 17 to draw it from the ground into a waste container hopper 14. An air filter element 13 within the waste container hopper 14 filters larger dust mixtures 15. The filtered dust mixture 15 then enters a cyclone separator 1 via a centrifugal fan 9. In the cyclone separator 1, the dust mixture 15 is separated into an air mixture 12, which is then thermally inactivated and disinfected by an electromagnetic heater 4. The heated and disinfected air mixture 12 is discharged from the outlet of the cyclone separator 1 through a high-temperature resistant air duct 35 to the recirculation pipe 36 of the mobile pickup head 17, where airflow is sprayed to lift and suspend the dust mixture from the ground, thus achieving recycling.

[0048] The working principle of this invention: First, refer to Figure 1 and Figure 2 This indicates that the present invention is applicable to Figure 1 The sweeper 45 shown has a suitable chassis 37 frame structure on which all components are mounted, and the mobile pickup head 17 is operable to a position close to the road surface. The sweeper 45 may have a suitable rotary sweeper 34, which is operable in a rotational coupling manner to move or guide dust-laden sweeping material (dirt or debris) toward or into the path of the mobile pickup head 17.

[0049] During operation, an airflow blows and suspends the dust mixture 15 (indicated by the arrow), which is then sucked up from the road surface by the mobile pickup head 17 and then from the ground through suction pipes 16 aligned on both sides and connected to the mobile pickup head 17. The suction pipes are connected to the mobile pickup head 17 via a pipe 17A mounted on the mobile pickup head 17 through a third conduit 41.

[0050] The dust mixture 15 is periodically transferred along the first conduit 38 into a sludge container hopper 14 mounted on the back of the chassis 37 (not shown).

[0051] In the next step, as the dust mixture 15 is transferred through the first conduit 38 into the waste container hopper 14, it falls or faces below the air filter element 13, which is positioned in the area of ​​the waste container hopper 14 by a suitable means (not shown) to filter larger particles of the dust mixture 15. Figure 2As shown, the dust mixture 15, after being filtered by the air filter element 13, remains contaminated and uncleaned after leaving the air filter element 13. The air mixture 12 may contain viruses, bacteria, and other pathogens during its transport via a centrifugal fan 9 mounted on the chassis 37 and through the fan inlet 11, which is connected to the waste container hopper 14 at the rear. The entire waste container hopper 14 can be lifted from the sweeper assembly.

[0052] Next, the air mixture 12 is conveyed through the second conduit 39 to the centrifugal fan 9 extending from the fan outlet conduit 8, and is guided to the induction heating coil 18 and the cyclone separator.

[0053] Therefore, the air mixture 12 is delivered from the air distribution valve 10 installed on the outlet duct 8 of the centrifugal fan 9 through the cyclone inlet 1A. For example... Figure 1 As shown, the air distribution valve 10 is mounted on the fan outlet duct 8 by bolts and nuts and connected to the cyclone separators, distributing the air mixture 12 into at least two cyclone separators 1. This separates the air mixture 12 that enters tangentially into the cyclone separators 1. The air distribution valve 10 is connected to the cyclone separator 1 at the cyclone inlet 1A via flanges 25 with nuts at both ends, forming the air mixture 12 distribution system.

[0054] Examples of the present invention mainly provide an induction heating coil 18 and a cyclone separator assembly 2 located at a cyclone separator, which performs the functions of separating and heating an air mixture 12 to thermally inactivate viruses, bacteria and other pathogenic microorganisms, and a heat recovery system that uses the temperature generated by the cyclone outlet 1B of the cyclone separator 1 to further heat the road surface.

[0055] Next, the dust separation and heating operations of the dust mixture 15 having the above structure will be carried out. Figures 2-6 As described in the text.

[0056] Figures 2-6 This is a schematic diagram of the process and method of separating and heating the air mixture 12 that enters the cyclone separator 1 equipped with an induction heating coil 18 according to the present invention.

[0057] In the cyclone separator 1, the cyclone flow of the cyclone separator 1 is conducive to the separation of the air mixture 12. During this process, the electromagnetic induction heating effect of the induction heating coil 18 simultaneously heats the air mixture 12.

[0058] A cross-sectional view of cyclone separator 1 is shown below. Figures 3-5As shown, the air mixture 12 flows through the cyclone inlet 1A of the cyclone separator. The air mixture 12 enters the cyclone separator 1 tangentially at a high inlet velocity, generating centrifugal force, causing the air mixture 12 to spiral downwards along the cylindrical section 21 and conical section 22 of the wall of the cyclone separator 1.

[0059] In the cyclone separator 1, the air mixture 12 generates vortices due to the restricted geometry between the cylindrical section 21 and the conical section 22 of the wall of the cyclone separator, and descends along a spiral path to the bottom, reverses direction from the bottom and is discharged through the cyclone outlet 1B at the top of the cyclone separator.

[0060] Furthermore, the vortices (strong centrifugal force) generated by the cyclone action help separate the air mixture 12. During this process, the dense phase separates from the light phase and settles at the bottom outlet 23 of the cyclone separator 1. The generated vortices determine the trajectory of the mixture within the cyclone separator 1 and the separation process. As the vortex diameter decreases to a critical diameter, the airflow direction reverses at the center of the cyclone separator 1 towards the main shaft outlet 1C, becoming an upward airflow 27. In addition to the movement of the external vortices, the separated air mixture 12 is guided to the cyclone outlet 1B at the top of the cyclone separator. To improve the separation efficiency of the cyclone separator 1, the mixture is collected at the bottom outlet 23 during the process.

[0061] Therefore, any mixture that accumulates at the bottom outlet 23 of the cone section 22 of the cyclone separator can be released by opening the release valve 7 connected to the bottom outlet 23 of the cone section 22 of the cyclone separator.

[0062] The release valve 7 is specifically connected to the bottom outlet 23 of the cyclone separator 1 to discharge the dense phase mixture that settles at the bottom outlet 23. During operation, the operator or driver must open or release the valve after each sweep or clean of the road.

[0063] The present invention is not limited to the above embodiments, and can be modified and improved as appropriate.

[0064] like Figure 3 As shown, in order to ensure the position of the induction heating coil 18 and the cyclone separator assembly 2, a simplified support frame 24 is welded and mounted on the chassis, and the entire system is also mounted on the chassis.

[0065] According to this embodiment, the high-frequency dust removal and thermal inactivation system includes:

[0066] Induction heating coil 18 is used to heat the air mixture 12 in cyclone separator 1;

[0067] The electromagnetic heater 4 generates the energy required to increase the power or heating temperature of the induction heating coil 18 during the separation and heating process.

[0068] like Figures 3-5and Figures 7-9 As shown, the air mixture 12 is separated and heated simultaneously. Viruses, bacteria, and other pathogens should be inactivated or killed as they pass through the cyclone separator.

[0069] The induction heating coil 18 generates an alternating magnetic field around the cyclone separator 1, thereby inducing a magnetic field and transferring heat, periodically heating the cyclone separator 1, and realizing the heating of the air mixture 12 flowing inside the cyclone separator 1.

[0070] like Figure 5 As shown, the electromagnetic heater 4 is connected to the cyclone separator through a structural connector. The structural connector with a circular groove 42 having equally spaced annular grooves A, B and C is spot welded to the cyclone separator 1. The induction heating coil 18, the cylindrical metal wire mesh 19 and the cylindrical insulating cover 20 are respectively arranged in the annular grooves A, B and C of the structural connector.

[0071] Next, as follows Figures 3-5 and Figures 7-9 As shown, insulating material is wrapped around the cyclone separator 1, and then... Figure 3 and Figure 5 The induction heating coil 18, the cylindrical metal wire mesh 19, and the cylindrical insulating cover 20 are arranged in the order shown.

[0072] Optimize the connection structure to achieve the following key performance indicators:

[0073] A closed-loop control system for precise and rapid heating of dust mixtures and thermal inactivation of viruses and other pathogenic microorganisms, without impacting humans or the environment.

[0074] Prevent magnetic interference, magnetic leakage, and damage to other auxiliary equipment during installation in vehicles or other applications.

[0075] During dust separation and induction heating processes, ensure precise temperature control and uniform heating of particles or mixtures.

[0076] Heat loss is prevented by protective coatings, seals, and insulation.

[0077] exist Figures 7-9 In the example shown, the air mixture 12 is separated by a cyclone separator 1, an induction heating coil 18 is arranged around the cyclone separator 1 to heat the air mixture 12, an insulating material is used for heat insulation, a cylindrical metal wire mesh 19 is used to prevent heat loss or dissipation, and a cylindrical insulating cover 20 is used to protect the coating, seals and insulation of the components.

[0078] During assembly, the induction heating coil 18 can be coated with insulating material to avoid direct contact that could cause a short circuit. In this invention, this process has been simplified to achieve uniform heating, improve heating efficiency, and make it environmentally friendly.

[0079] The insulating material is used to prevent magnetic interference and damage to other vehicle auxiliary equipment, such as the battery pack 6. The thermal insulation material also controls the generated temperature and retains significant heat around the cyclone separator 1.

[0080] Induction heating coil 18 passes through Figure 2 The cable 4B shown is connected to the electromagnetic heater 4, which generates the energy required to heat the induction heating coil 18, and can be connected via... Figure 2 The electronic controller 5 shown operates to maintain the temperature within the desired range.

[0081] The connection between the electromagnetic heater 4 and the electronic controller 5 is simplified, making it easier to operate. The electromagnetic heater 4, along with the entire induction heating coil 18 and the cyclone separator assembly 2, can be retrofitted onto existing road sweepers.

[0082] like Figure 1 As shown, in this invention, during the final induction heating process, the hot air 3 discharged from the cyclone outlet 1B is recovered and guided through the high-temperature resistant air duct 35 to heat the road surface, as an embodiment of the external heating method of this invention. Therefore, the high-temperature resistant air duct 35 is connected between the cyclone outlet 1B and the recirculation pipe 36 of the mobile pickup head 17.

[0083] The hot air 3 discharged from the cyclone outlet 1B of the cyclone separator 1 is discharged through the connected high-temperature resistant air duct 35 to heat the road surface.

[0084] Exemplary methods

[0085] like Figure 1 and Figure 6 The illustration shows an exemplary method for separating and heating a dust mixture 15 or an air mixture 12 in a cyclone separator 1 to achieve thermal inactivation, and an exemplary method for how the coupled induction heating coil 18 and the cyclone separator assembly 2 are mounted on a sweeper vehicle.

[0086] like Figure 1 As shown, the induction heating coil 18 and the cyclone separator assembly 2 are installed on the sweeper. Figure 6 This is an exemplary flowchart of the process of separating the dust mixture 15 or the air mixture 12 in this invention.

[0087] exist Figure 6 In block 28, air mixture 12 is introduced into cyclone separator 1 from cyclone inlet 1A. The air mixture may contain various particles or contaminants, including viruses and bacteria. Depending on various operating conditions, air mixture 12 can be removed from the system. However, cyclone separator 1 operates over a wide range of pressures and temperatures.

[0088] exist Figure 6In box 29, when the air mixture 12 enters the cyclone separator 1, a vortex is generated, and the vortex generates a downward flow and an upward reverse flow.

[0089] exist Figure 6 In box 30, the air mixture 12 and the clean airflow are separated from the vortex. The pollutants are forced downward in the downward flow of the vortex, while the pure gas is guided outward by the upward reverse flow of the central vortex of the cyclone separator 1.

[0090] exist Figure 6 In box 33, the air mixture 12 is heated during the separation process. During this process, mass transfer and heat exchange occur, transferring heat to the air mixture 12 in the cyclone separator 1, while the air mixture 12 is heated using an induction heating coil. Heating the air mixture at an operating temperature of 100~500℃ (based on experimental results) can inactivate viruses, bacteria and other pathogenic microorganisms in the air mixture 12.

[0091] exist Figure 6 In box 31, the high-temperature airflow discharged from cyclone separator 1 is recovered and discharged for use in heating the road surface.

[0092] exist Figure 6 In box 32, particulate matter collected at bottom outlet 23 can be discharged through manual release valve 7 connected to bottom outlet 23.

[0093] In summary, the high-frequency dust separation and thermal inactivation system described in this invention can be used for thermal inactivation or killing of viruses, bacteria, and other pathogenic microorganisms on road surfaces. By improving heating performance, this system is not only suitable for dust separation but also has the potential to be extended to other road applications requiring efficient heating, demonstrating promising development prospects. The cyclone separator separates the dust mixture, while the induction heating coil wound around the cyclone separator simultaneously heats the dust mixture to achieve thermal inactivation and suppression of viruses, bacteria, and other pathogenic microorganisms in the dust-containing mixture.

[0094] The above are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent changes made in accordance with the claims of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A sweeper vehicle, characterized in that, The vehicle includes a mobile pickup head (17), a road sweeper, and a high-frequency dust separation and heat inactivation device. The road sweeper and the mobile pickup head (17) are arranged sequentially on the chassis along the vehicle's direction of travel, positioned close to the road surface. The road sweeper moves or guides the dust-laden cleaning material to the path of the mobile pickup head (17). The centrifugal fan (9) and cyclone separator (1) of the high-frequency dust separation and heat inactivation device are mounted on the chassis of the sweeper. The mobile pickup head (17) is connected to the inlet of the centrifugal fan (9) via a suction pipe (16). The outlet of the cyclone separator is connected to a high-temperature resistant air duct (35). The outlet of the high-temperature resistant air duct (35) is connected to the recirculation pipe (36) of the mobile pickup head (17), aligned with the ground to be cleaned. The high-frequency dust separation and thermal inactivation device includes a centrifugal fan (9) and a cyclone separator assembly (2). The cyclone separator assembly (2) includes a cyclone separator (1) and an electromagnetic heater (4). The outlet of the centrifugal fan (9) is connected to the inlet of the cyclone separator (1), and the electromagnetic heater (4) is located on the outer ring of the cyclone separator (1).

2. The sweeper according to claim 1, characterized in that, The cyclone separator assembly (2) also includes an air distribution valve (10). There are multiple cyclone separators (1), and the outlet of the centrifugal fan (9) is connected to the inlet of multiple cyclone separators (1) through the air distribution valve (10).

3. The sweeper according to claim 1, characterized in that, The electromagnetic heater (4) is mounted on the outer wall of the cylindrical section of the cyclone separator (1).

4. The sweeper according to claim 1 or 3, characterized in that, The electromagnetic heater (4) includes an induction heating coil (18), a cylindrical metal wire mesh (19), and a cylindrical insulating cover (20) arranged sequentially from the inside to the outside.

5. The sweeper according to claim 4, characterized in that, The electromagnetic heater (4) also includes an electronic controller (5), which is connected to the induction heating coil (18).

6. The sweeper according to claim 1, characterized in that, The high-frequency dust separation and thermal inactivation device also includes an air filter element (13), which is located at the inlet end of the centrifugal fan (9).

7. The sweeper according to claim 1, characterized in that, A release valve is provided at the bottom of the cyclone separator (1).

8. The sweeper according to claim 1, characterized in that, The chassis is also equipped with a waste container hopper (14), which contains an air filter element (13). The suction pipe is connected to the inlet end of the waste container hopper (14), and the outlet end of the waste container hopper (14) is connected to a centrifugal fan (9).

9. A cleaning method using the sweeper vehicle as described in claim 8, characterized in that, The sweeper moves or guides the dust-laden sweeping material to the mobile pickup head (17). The recirculation pipe (36) of the mobile pickup head (17) sprays air to blow up and suspend the dust mixture (15) on the ground, so that the suction pipe (16) connected to the mobile pickup head (17) can suck it up from the ground and into the waste container hopper (14). The air filter element (13) in the waste container hopper (14) filters out larger dust mixtures (15). The dust mixture (15) is then fed into the cyclone separator (1) by the centrifugal fan (9). In the cyclone separator (1), the dust mixture (15) is separated into an air mixture (12), which is then inactivated and disinfected by the electromagnetic heater (4). The air mixture (12) after being heated and disinfected is discharged from the outlet of the cyclone separator (1) through the high-temperature resistant air duct (35) to the recirculation pipe (36) of the mobile pickup head (17) and sprayed out.

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