Waste gas treatment device of plastic granulator

Abstract

The invention relates to the technical field of waste gas treatment, in particular to a waste gas treatment device of a plastic granulator. The plastic granulator waste gas treatment device comprises a supporting frame, a filtering mechanism, a switching assembly and a photolysis assembly, the filtering mechanism comprises a filtering barrel, an air inlet pipe, an exhaust pipe, a clamping ring, an activated carbon filtering assembly and a rotating assembly, a plurality of lamp tube assemblies comprise bottom fixing parts and a plurality of UV lamp tubes, and each UV lamp tube is sleeved with a plurality of cleaning assemblies. An activated carbon filtering assembly of the filtering mechanism can adsorb and remove volatile organic compounds, dust and particulate matter in waste gas, a rotating assembly can rotate after the activated carbon filtering assembly is blocked, then dust and particulate matter on the top of the activated carbon filtering assembly are swept and scraped, and a switching assembly can be started after the activated carbon filtering assembly is blocked. And light of the UV lamp tube is reduced, energy waste is reduced, the cleaning assembly can move up and down after the equipment starting and switching assembly is started, and then the surface of the UV lamp tube is cleaned.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and particularly to a waste gas treatment device for a plastic granulator. Background Art

[0002] The waste gas treatment device for a plastic granulator is a device used to treat the waste gas generated during the plastic granulation process. When the plastic granulator is working, waste gas will be generated during the processes of heating, melting, and extruding plastic raw materials. These waste gases usually contain various pollutants, such as volatile organic compounds, particulate matter, and odor substances. Directly discharging these waste gases will cause serious harm to the environment and human health. At present, the activated carbon filter screen in the waste gas treatment device for a plastic granulator is prone to blockage. After the filter screen is blocked, it needs to be replaced, and thus the replacement is frequent. At the same time, after the activated carbon filter screen is blocked, the amount of waste gas passing through the filter screen becomes less, and the cooperating lights always remain on, which is not conducive to energy conservation. Summary of the Invention

[0003] Based on this, it is necessary to provide a waste gas treatment device for a plastic granulator to solve at least one of the above technical problems.

[0004] A waste gas treatment device for a plastic granulator includes a support frame, a filtering mechanism, a switching component, and a photocatalytic decomposition component. The support frame is placed on the ground. The upper side wall of the filtering mechanism is clamped on the top of the support frame. The filtering mechanism includes a filtering barrel, an air inlet pipe, an exhaust pipe, a clamping ring, an activated carbon filtering component, and a rotating component. The upper side wall of the filtering barrel is clamped on the top of the support frame. One end of the air inlet pipe is inserted into the top of the filtering barrel. One end of the exhaust pipe is inserted into the bottom of the filtering barrel. The inside of the filtering barrel is hollow to form a receiving groove. The clamping ring, the activated carbon filtering component, and the rotating component are all received in the receiving groove, and the clamping ring is fixedly connected to the middle side wall of the receiving groove. A first magnet is installed on the top of the clamping ring. The bottom of the activated carbon filtering component abuts against the top of the first magnet. The middle part of the rotating component rotatably passes through the middle part of the activated carbon filtering component, and the bottom of the rotating component is connected to the lower end of the side wall of the receiving groove. The switching component is fixedly connected to the middle side wall of the receiving groove and is located below the activated carbon filtering component. The side wall of the photocatalytic decomposition component is connected to the other end of the exhaust pipe. The photocatalytic decomposition component includes a protective shell, a removal cover, a plurality of lamp tube components, and a plurality of photocatalysts. The protective shell is placed on the ground, and one end of the protective shell is connected to the other end of the exhaust pipe. The removal cover is installed on one side wall of the protective shell. The plurality of lamp tube components and the plurality of photocatalysts are all installed inside the protective shell, and the plurality of lamp tube components and the plurality of photocatalysts are arranged at intervals. The plurality of lamp tube components include a bottom fixing member and a plurality of UV lamp tubes. The bottom fixing member is fixedly installed at the bottom of the protective shell. The bottoms of the plurality of UV lamp tubes are all inserted into the top of the bottom fixing member, and the tops of the plurality of UV lamp tubes are all connected to the top of the protective shell. Each UV lamp tube is sleeved with a plurality of cleaning components.

[0005] The activated carbon filter component of the filtering mechanism can adsorb and remove volatile organic compounds, dust and particulate matter in the waste gas. The rotating component can rotate after the activated carbon filter component is blocked, and then sweep and scrape the dust and particulate matter on the top of the activated carbon filter component. The switching component can be started after the activated carbon filter component is blocked, reduce the brightness of the UV lamp tube, and reduce energy waste. The photocatalyst can generate strongly oxidizing substances under light irradiation and is used to decompose organic compounds, some inorganic compounds, bacteria and viruses in the waste gas. The cleaning component can move up and down after the device is started and the switching component is started, and then clean the surface of the UV lamp tube to prevent dust and particulate matter from adhering to the UV lamp tube, thereby reducing the brightness of the UV lamp tube.

[0006] In one embodiment, a reflective film layer is plated on the surface of each cleaning component. Each cleaning component includes an electromagnet, a magnet piece and a magnetic isolation piece. The electromagnet is fixedly installed outside the UV lamp tube. The magnet piece is slidably sleeved outside the UV lamp tube, and the magnet piece is located below the corresponding electromagnet. The magnetic isolation piece is fixedly sleeved outside the UV lamp tube, and the magnetic isolation piece is located below the corresponding magnet piece. The electromagnet is electrically connected to the switching component.

[0007] In one embodiment, the magnet piece includes a cleaning brush and a magnet ring. One end of the magnet ring is slidably abutted against the side wall of the UV lamp tube. The magnet ring is fixedly connected to the other end of the cleaning brush, and the magnet ring is located below the corresponding electromagnet.

[0008] In one embodiment, the magnetic isolation piece includes a clamping ring and an arc-shaped guiding surface. Both the clamping ring and the arc-shaped guiding surface are made of materials that can block magnetic fields. The clamping ring is fixedly sleeved outside the UV lamp tube, and the clamping ring is located below the corresponding magnet ring. The upper end of the guiding surface is fixedly connected to the outer ring of the clamping ring.

[0009] In one embodiment, the activated carbon filter component includes a plurality of spring pieces and a filter screen. The bottoms of the plurality of spring pieces abut against the top of the first magnet. The bottom of the filter screen is fixedly connected to the tops of the plurality of spring pieces. Activated carbon is stored in the filter screen.

[0010] In one embodiment, each spring piece includes an upper sleeve rod, a lower sleeve rod, a second magnet and a first spring. The top of the upper sleeve rod is fixedly connected to the bottom of the filter screen piece. The lower sleeve rod is slidably inserted into the bottom of the upper sleeve rod. The second magnet is fixedly installed at the bottom of the upper sleeve rod. The upper end of the first spring is installed inside the upper sleeve rod, and the lower end of the first spring is installed inside the lower sleeve rod.

[0011] In one embodiment, a collection groove is formed at the top of the filter screen. The collection groove penetrates the top surface of the filter screen. A baffle groove is formed on the inner side wall of the filter barrel. The baffle groove is located above the filter screen. A baffle is hingedly installed at the bottom of the baffle groove. An arc-shaped surface is formed at the top of the baffle.

[0012] In one embodiment, the rotating assembly includes a support member and a rotating member. Both ends of the bottom of the support member are fixedly connected to the middle side wall of the receiving groove, and the support member is located below the clamping ring. The middle of the rotating member rotatably passes through the middle of the filter screen, and the bottom of the rotating member rotatably sleeves on the top of the support member. The support member includes a connecting rod and a fixing rod. Both ends of the connecting rod are fixedly connected to the middle side wall of the receiving groove. The bottom of the fixing rod is fixedly connected to the middle of the connecting rod, and the top of the fixing rod is inserted into the bottom of the rotating member.

[0013] In one embodiment, the rotating member includes a rotating rod, a scraping brush, a clamping plate and a driving fan. The middle of the rotating rod rotatably passes through the middle of the filter screen, and the bottom of the rotating rod rotatably sleeves on the top of the fixing rod. The scraping brush and the clamping plate are respectively installed on both side walls of the upper end of the rotating rod, and the height of the scraping brush is lower than that of the clamping plate. The scraping brush is clamped in the collecting groove, and there is a collecting space between the bottom of the scraping brush and the bottom side wall of the collecting groove. The driving fan is fixedly sleeved on the top of the rotating rod, and the baffle is abutted against the clamping plate.

[0014] In one embodiment, the switching assembly includes an L-shaped fixing column, a switching switch and a starting extrusion rod. The lower end of the fixing column is fixedly connected to the middle side wall of the receiving groove, and the fixing column is located below the filter screen. A sliding groove is formed at the top of the fixing column, and a spring groove is formed at the bottom side wall of the sliding groove. The switching switch is slidably installed inside the sliding groove. The bottom of the starting extrusion rod is slidably inserted into the sliding groove. A third magnet is installed at the top of the fixing column. The bottom of the filter screen is made of a magnetic material. A plurality of lamp tube assemblies are electrically connected to the switching switch. A second spring is installed in the spring groove. One end of the second spring abuts against the bottom of the switching switch, and the other end of the second spring abuts against the bottom side wall of the spring groove.

[0015] In the present invention, by providing a driving fan, after long-term use, when the filter screen becomes clogged, the pressure on the top of the filter screen becomes stronger, the filter screen moves downward, the upper sleeve rod moves downward with the filter screen, the first spring is compressed, and finally the second magnet adsorbs on the first magnet. When the filter screen moves downward, the scraping brush will separate from the collection groove, and the baffle above the filter screen will separate from the abutment of the clamping plate. The waste gas will impact the driving fan, and the driving fan will rotate under the impact of the waste gas. The rotating rod will rotate with the driving fan. When the rotating rod rotates, due to the relatively heavy filtering mechanism, it will not rotate with the rotating rod. After the scraping brush separates from the collection groove, the bottom of the scraping brush abuts against the top of the filter screen, and the scraping brush rotates with the rotating rod, so that the scraping brush can clean and scrape the dust and particulate matter blocked on the top of the filter screen, preventing the top of the filter screen from being blocked, resulting in the inability of the activated carbon below the filter screen to adsorb, and thus the inability to treat the waste gas. When the scraping brush cleans and scrapes the dust and particulate matter blocked on the top of the filter screen, the dust and particulate matter will move to the collection groove for collection under the cleaning and scraping of the scraping brush, preventing the dust and particulate matter from continuing to block the filter screen, thereby extending the service life of the filter screen, reducing the number of maintenance and replacements, and saving manpower.

[0016] By providing a changeover switch, after the filter screen is clogged, when the pressure on the top of the filter screen becomes stronger and the filter screen moves downward, the bottom of the filter screen will abut against the third magnet. Since the bottom of the filter screen is made of a magnet material, the bottom of the filter screen will be adsorbed on the third magnet. When the filter screen continues to move downward, the starting extrusion rod will move toward with the filter screen to squeeze the changeover switch. The changeover switch is activated, the current of the UV lamp tube decreases, and thus the brightness of the UV lamp tube is lowered to save electric energy and prevent waste of resources. Since less waste gas passes through the filter screen, the waste gas passing through the filter screen can be photolyzed without high-intensity ultraviolet light, thereby saving electric energy and preventing waste of resources.

[0017] By providing a magnet ring and a cleaning brush, when the waste gas is discharged into the waste gas treatment device, the device is started, the electromagnet is energized to generate a magnetic field, so that the magnet ring is adsorbed upward at the bottom of the electromagnet. When the magnet ring moves upward close to the bottom of the electromagnet, the cleaning brush moves upward with the magnet ring to clean the surface of the UV lamp tube, preventing the residual volatile organic compounds, dust and particulate matter in the waste gas from adhering to the surface of the UV lamp tube, thereby reducing the intensity of the ultraviolet light emitted by the UV lamp tube, resulting in the inability of the ultraviolet light to completely remove the organic molecules in the waste gas, and thus reducing the decomposition efficiency of the organic molecules in the waste gas. The magnet ring is relatively heavy and can move downward under the action of gravity when the magnetic field weakens or disappears. After the changeover switch is activated, the current after the electromagnet is energized decreases, the magnetic field of the electromagnet weakens, and the magnet ring and the cleaning brush move downward under the action of gravity, so that the cleaning brush can clean the surface of the UV lamp tube, preventing the residual volatile organic compounds, dust and particulate matter in the waste gas from adhering to the surface of the UV lamp tube, thereby reducing the intensity of the ultraviolet light emitted by the UV lamp tube, resulting in the inability of the ultraviolet light to completely remove the organic molecules in the waste gas, and thus reducing the decomposition efficiency of the organic molecules in the waste gas.

[0018] By setting the second magnet and the first magnet, after long-term use, when the filter screen becomes blocked, the bottom of the filter screen will be adsorbed on the third magnet, and the second magnet will be adsorbed on the first magnet. When the scraping brush rotates to clean and scrape the dust and particulate matter blocked at the top of the filter screen, the filter screen is slowly unclogged, the pressure on the top of the filter screen becomes smaller, and under the action of the restoring force of the first spring and the switching switch, the filter screen has an upward movement trend. At the same time, by adsorbing the bottom of the filter screen with the third magnet and the second magnet on the first magnet, it can prevent the filter screen from moving directly upward. After the scraping brush collects most of the dust and particulate matter blocked at the top of the filter screen in the collection tank, when the filter screen is unclogged to a certain extent, the second magnet is separated from the first magnet, and the bottom of the filter screen is separated from the third magnet, enabling the filter screen to quickly recover upward by a certain height, thereby extending the service life of the filter screen, reducing the number of repairs and replacements, and saving manpower. After the filter screen becomes blocked again, the scraping brush cleans the top of the filter screen again, repeatedly cleaning and scraping the dust and particulate matter at the top of the filter screen, thereby extending the service life of the filter screen, reducing the number of repairs and replacements, and saving manpower.

[0019] The structure of the present invention is simple, which can effectively extend the service life of the filter screen, reduce the number of repairs and replacements, and save manpower. At the same time, after the filter screen is blocked, it can reduce the current of the UV lamp tube, and then lower the brightness of the UV lamp tube to save electric energy and prevent waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the whole of an embodiment.

[0021] Figure 2 It is a cross-sectional view of the whole of an embodiment.

[0022] Figure 3 It is a three-dimensional schematic diagram of an embodiment after removing the protective cover of the photolysis component.

[0023] Figure 4 It is a three-dimensional schematic diagram of a filtering mechanism of an embodiment.

[0024] Figure 5 It is a partial three-dimensional schematic diagram of a UV lamp tube of an embodiment.

[0025] Figure 6 It is a three-dimensional schematic diagram of a spring member of an embodiment.

[0026] Figure 7 It is a cross-sectional view of a switching component of an embodiment.

[0027] Figure 8 For an embodiment Figure 2 The enlarged schematic diagram of part A in

[0028] In the figure: 10, support frame; 20, filtering mechanism; 21, filtering barrel; 22, air inlet pipe; 23, exhaust pipe; 24, clamping ring; 25, activated carbon filtering component; 26, rotating component; 27, spring component; 28, filter screen; 29, baffle slot; 210, accommodating groove; 240, first magnet; 270, upper sleeve rod; 271, lower sleeve rod; 272, second magnet; 273, first spring; 280, collection tank; 281, collection space; 290, baffle; 30, switching component; 31, fixed column; 32, switching switch; 33, starting extrusion rod; 34, sliding slot; 35, third magnet; 36, spring slot; 37, second spring; 40, photocatalytic component; 41, protective shell; 42, removal cover; 43, lamp tube component; 44, photocatalyst; 430, bottom fixing part; 431, UV lamp tube; 50, cleaning component; 51, electromagnet; 52, magnet component; 53, magnetic isolation component; 520, cleaning brush; 521, magnet ring; 530, clamping ring; 531, guiding surface; 60, support member; 61, rotating member; 62, connecting rod; 63, fixed rod; 64, rotating rod; 65, scraping brush; 66, clamping plate; 67, driving fan. Detailed implementation mode

[0029] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] An embodiment provided by the present invention is as Figures 1 to 8As shown in the figure, it is an exhaust gas treatment device for a plastic granulator, which includes a support frame 10, a filtering mechanism 20, a switching component 30 and a photocatalytic component 40. The support frame 10 is placed on the ground. The upper side wall of the filtering mechanism 20 is clamped on the top of the support frame 10. The filtering mechanism 20 includes a filtering barrel 21, an air inlet pipe 22, an exhaust pipe 23, a clamping ring 24, an activated carbon filtering component 25 and a rotating component 26. The upper side wall of the filtering barrel 21 is clamped on the top of the support frame 10. One end of the air inlet pipe 22 is inserted into the top of the filtering barrel 21. One end of the exhaust pipe 23 is inserted into the bottom of the filtering barrel 21. The interior of the filtering barrel 21 is hollow to form a receiving groove 210. The clamping ring 24, the activated carbon filtering component 25 and the rotating component 26 are all received in the receiving groove 210, and the clamping ring 24 is fixedly connected to the middle side wall of the receiving groove 210. A first magnet 240 is installed on the top of the clamping ring 24. The bottom of the activated carbon filtering component 25 abuts against the top of the first magnet 240. The middle of the rotating component 26 rotatably passes through the middle of the activated carbon filtering component 25, and the bottom of the rotating component 26 is connected to the lower end of the side wall of the receiving groove 210. The switching component 30 is fixedly connected to the middle side wall of the receiving groove 210, and the switching component 30 is located below the activated carbon filtering component 25. The side wall of the photocatalytic component 40 is connected to the other end of the exhaust pipe 23. The photocatalytic component 40 includes a protective shell 41, a removal cover 42, a plurality of lamp tube components 43 and a plurality of photocatalysts 44. The protective shell 41 is placed on the ground, and one end of the protective shell 41 is connected to the other end of the exhaust pipe 23. The removal cover 42 is installed on one side wall of the protective shell 41. The plurality of lamp tube components 43 and the plurality of photocatalysts 44 are all installed inside the protective shell 41, and the plurality of lamp tube components 43 and the plurality of photocatalysts 44 are arranged at intervals. The plurality of lamp tube components 43 include a bottom fixing part 430 and a plurality of UV lamp tubes 431. The bottom fixing part 430 is fixedly installed at the bottom of the protective shell 41. The bottoms of the plurality of UV lamp tubes 431 are all inserted into the top of the bottom fixing part 430, and the tops of the plurality of UV lamp tubes 431 are all connected to the top of the protective shell 41. Each UV lamp tube 431 is sleeved with a plurality of cleaning components 50 on the outside.

[0033] The activated carbon filtering component 25 of the filtering mechanism 20 can adsorb and remove volatile organic compounds, dust and particulate matter in the exhaust gas. The rotating component 26 can rotate after the activated carbon filtering component 25 is blocked, and then clean and scrape the dust and particulate matter on the top of the activated carbon filtering component 25. The switching component 30 can be started after the activated carbon filtering component 25 is blocked, reduce the brightness of the UV lamp tubes 431, and reduce the waste of energy. The photocatalyst 44 can generate strongly oxidizing substances under light irradiation and is used to decompose organic compounds, some inorganic compounds, bacteria and viruses in the exhaust gas. The cleaning component 50 can move up and down after the device is started and the switching component 30 is started, and then clean the surface of the UV lamp tubes 431 to prevent the UV lamp tubes 431 from adhering to dust and particulate matter, thereby reducing the brightness of the UV lamp tubes 431.

[0034] As Figure 2 and Figure 5 shown, a reflective film layer is plated on the surface of each cleaning component 50. Each cleaning component 50 includes an electromagnet 51, a magnet member 52 and a magnetic isolation member 53. The electromagnet 51 is fixedly installed outside the UV lamp tube 431. The magnet member 52 is slidably sleeved outside the UV lamp tube 431, and the magnet member 52 is located below the corresponding electromagnet 51. The magnetic isolation member 53 is fixedly sleeved outside the UV lamp tube 431, and the magnetic isolation member 53 is located below the corresponding magnet member 52. The electromagnet 51 is electrically connected to the switching component 30.

[0035] As Figure 5 shown, the magnet member 52 includes a cleaning brush 520 and a magnet ring 521. One end of the magnet ring 521 is slidably abutted against the side wall of the UV lamp tube 431. The magnet ring 521 is fixedly connected to the other end of the cleaning brush 520, and the magnet ring 521 is located below the corresponding electromagnet 51.

[0036] As Figure 5 shown, the magnetic isolation member 53 includes a clamping ring 530 and an arc-shaped guiding surface 531. Both the clamping ring 530 and the arc-shaped guiding surface 531 are made of materials capable of blocking magnetic fields. The clamping ring 530 is fixedly sleeved outside the UV lamp tube 431, and the clamping ring 530 is located below the corresponding magnet ring 521. The upper end of the guiding surface 531 is fixedly connected to the outer ring of the clamping ring 530.

[0037] As Figures 2 to 4 shown, the activated carbon filtering component 25 includes a plurality of spring members 27 and a filter screen 28. The bottoms of the plurality of spring members 27 abut against the top of the first magnet 240. The bottom of the filter screen 28 is fixedly connected to the tops of the plurality of spring members 27. Activated carbon (not labeled in the figure) is accommodated in the filter screen 28.

[0038] As Figures 4 to 6 shown, each spring member 27 includes an upper sleeve rod 270, a lower sleeve rod 271, a second magnet 272 and a first spring 273. The top of the upper sleeve rod 270 is fixedly connected to the bottom of the filter screen member 28. The lower sleeve rod 271 is slidably inserted into the bottom of the upper sleeve rod 270. The second magnet 272 is fixedly installed at the bottom of the upper sleeve rod 270. The upper end of the first spring 273 is installed inside the upper sleeve rod 270, and the lower end of the first spring 273 is installed inside the lower sleeve rod 271.

[0039] As Figures 2 to 4 shown, a collection groove 280 is formed at the top of the filter screen 28. The collection groove 280 penetrates through the top surface of the filter screen 28. A baffle groove 29 is formed on the inner side wall of the filter barrel 21. The baffle groove 29 is located above the filter screen 28, and a baffle 290 is hingedly installed at the bottom of the baffle groove 29. An arc-shaped surface (not shown in the figure) is formed at the top of the baffle 290.

[0040] As shown Figures 2 to 4 in FIG. 1, the rotating assembly 26 includes a support member 60 and a rotating member 61. Both ends of the bottom of the support member 60 are fixedly connected to the middle side wall of the receiving groove 210, and the support member 60 is located below the clamping ring 24. The middle of the rotating member 61 is rotatably inserted through the middle of the filter screen 28, and the bottom of the rotating member 61 is rotatably sleeved on the top of the support member 60. The support member 60 includes a connecting rod 62 and a fixing rod 63. Both ends of the connecting rod 62 are fixedly connected to the middle side wall of the receiving groove 210. The bottom of the fixing rod 63 is fixedly connected to the middle of the connecting rod 62, and the top of the fixing rod 63 is inserted into the bottom of the rotating member 61.

[0041] As shown Figure 4 and Figure 8 in FIG. 2, the rotating member 61 includes a rotating rod 64, a scraping brush 65, a clamping plate 66 and a driving fan 67. The middle of the rotating rod 64 is rotatably inserted through the middle of the filter screen 28, and the bottom of the rotating rod 64 is rotatably sleeved on the top of the fixing rod 63. The scraping brush 65 and the clamping plate 66 are respectively installed on both side walls of the upper end of the rotating rod 64, and the height of the scraping brush 65 is lower than that of the clamping plate 66. The scraping brush 65 is clamped in the collecting groove 280, and there is a collecting space 281 between the bottom of the scraping brush 65 and the bottom side wall of the collecting groove 280. The driving fan 67 is fixedly sleeved on the top of the rotating rod 64, and the baffle 290 abuts against the clamping plate 66. The collecting space 281 can accommodate dust and particulate matter, and at the same time prevent the dust and particulate matter from being too high, so that the scraping brush 65 cannot completely enter the collecting groove 280.

[0042] As shown Figures 2 to 7 in FIG. 3, the switching assembly 30 includes an L-shaped fixing column 31, a switching switch 32 and a starting extrusion rod 33. The lower end of the fixing column 31 is fixedly connected to the middle side wall of the receiving groove 210, and the fixing column 31 is located below the filter screen 28. A sliding groove 34 is opened at the top of the fixing column 31, and a spring groove 36 is opened at the bottom side wall of the sliding groove 34. The switching switch 32 is slidably installed inside the sliding groove 34. The bottom of the starting extrusion rod 33 is slidably inserted into the sliding groove 34. A third magnet 35 is installed at the top of the fixing column 31. The bottom of the filter screen 28 is made of a magnet material. A plurality of lamp tube assemblies 43 are all electrically connected to the switching switch 32. A second spring 37 is installed in the spring groove 36. One end of the second spring 37 abuts against the bottom of the switching switch 32, and the other end of the second spring 37 abuts against the bottom side wall of the spring groove 36.

[0043] During installation: Install the removal cover 42 on one side wall of the protective shell 41. Install multiple lamp tube assemblies 43 and multiple photocatalysts 44 inside the protective shell 41. Fix the bottom fixture 430 to the bottom of the protective shell 41. Fix the electromagnet 51 outside the UV lamp tube 431. Fix the second magnet 272 to the bottom of the upper sleeve rod 270. Install the upper end of the first spring 273 inside the upper sleeve rod 270 and install the lower end of the first spring 273 inside the lower sleeve rod 271. Install the scraping brush 65 and the clamping plate 66 on both side walls at the upper end of the rotating rod 64 respectively. Slide the changeover switch 32 inside the sliding groove 34.

[0044] During use: 1. Discharge the waste gas of the plastic granulator into the intake pipe 22. The waste gas enters the accommodating groove 210 through the intake pipe 22. The waste gas is adsorbed by the activated carbon in the filter screen 28 to remove volatile organic compounds, dust and particulate matter in the waste gas. After being filtered by the filter screen 28, the waste gas enters the photolysis component 40 through the exhaust pipe 23. The organic molecules in the waste gas are decomposed into small molecule substances, such as carbon dioxide and water, by ultraviolet rays of a specific wavelength in the photolysis component 40, and finally discharged to the outside of the photolysis component 40. The photocatalyst 44 can generate strongly oxidizing substances under light irradiation and is used to decompose organic compounds, some inorganic compounds, bacteria and viruses in the waste gas.

[0045] 2. After long-term use, the filter screen 28 becomes blocked, especially at the top of the filter screen 28. After the filter screen 28 is blocked, the pressure on the top of the filter screen 28 becomes stronger, the filter screen 28 moves downward, the upper sleeve rod 270 moves downward with the filter screen 28, the first spring 273 is compressed, and finally the second magnet 272 is adsorbed on the first magnet 240. When the filter screen 28 moves downward, the scraping brush 65 will disengage from the collection groove 280, and the baffle 290 above the filter screen 28 will disengage from the abutment of the clamping plate 66. The waste gas will impact the driving fan 67, and the driving fan 67 will rotate under the impact of the waste gas. The rotating rod 64 will rotate with the driving fan 67. When the rotating rod 64 rotates, due to the heavy weight of the filtering mechanism 20, it will not rotate with the rotating rod 64. After the scraping brush 65 disengages from the collection groove 280, the bottom of the scraping brush 65 abuts against the top of the filter screen 28, and the scraping brush 65 rotates with the rotating rod 64 so that the scraping brush 65 can clean and scrape the dust and particulate matter blocked at the top of the filter screen 28 to prevent the top of the filter screen 28 from being blocked, resulting in the inability of the activated carbon below the filter screen 28 to adsorb and thus the inability to treat the waste gas. When the scraping brush 65 cleans and scrapes the dust and particulate matter blocked at the top of the filter screen 28, the dust and particulate matter will be moved to the bottom of the collection groove 280 for collection under the cleaning and scraping of the scraping brush 65, preventing the dust and particulate matter from continuing to block the filter screen 28, thereby extending the service life of the filter screen 28, reducing the number of maintenance and replacements, and saving manpower.

[0046] 3. After the filter screen 28 is blocked, the pressure on the top of the filter screen 28 becomes stronger. When the filter screen 28 moves downward, the bottom of the filter screen 28 will abut against the third magnet 35. Since the bottom of the filter screen 28 is made of a magnet material, the bottom of the filter screen 28 will be adsorbed on the third magnet 35. When the filter screen 28 continues to move downward, the starting extrusion rod 33 will move along with the filter screen 28 for extruding the changeover switch 32. The changeover switch 32 is started, and the current of the UV lamp tube 431 is reduced. Consequently, the brightness of the UV lamp tube 431 is turned down to save electric energy and prevent resource waste. Since less waste gas passes through the filter screen 28, the waste gas passing through the filter screen 28 can be photolyzed without high-brightness ultraviolet light, thus saving electric energy and preventing resource waste.

[0047] 4. The clamping ring 530 and the arc-shaped guiding surface 531 are both made of materials capable of blocking the magnetic field, and can block the top magnet ring 521 when the electromagnet 51 is energized to generate a magnetic field, preventing the magnet ring 521 from being unable to adsorb upward on the bottom of the electromagnet 51. When waste gas is discharged into the waste gas treatment device, the device is started, and the electromagnet 51 is energized to generate a magnetic field, causing the magnet ring 521 to adsorb upward on the bottom of the electromagnet 51. When the magnet ring 521 moves upward close to the bottom of the electromagnet 51, the cleaning brush 520 moves upward along with the magnet ring 521 for cleaning the surface of the UV lamp tube 431, preventing volatile organic compounds, dust and particulate matters remaining in the waste gas from adhering to the surface of the UV lamp tube 431, thereby reducing the intensity of the ultraviolet light emitted by the UV lamp tube 431 and causing the ultraviolet light to be unable to completely remove the organic molecules in the waste gas, and further reducing the decomposition efficiency of the organic molecules in the waste gas. The magnet ring 521 is relatively heavy and can move downward under the action of gravity when the magnetic field weakens or disappears. After the changeover switch 32 is started, the current of the electromagnet 51 after being energized is reduced, the magnetic field of the electromagnet 51 weakens, and the magnet ring 521 and the cleaning brush 520 move downward under the action of gravity so that the cleaning brush 520 can clean the surface of the UV lamp tube 431, preventing volatile organic compounds, dust and particulate matters remaining in the waste gas from adhering to the surface of the UV lamp tube 431, thereby reducing the intensity of the ultraviolet light emitted by the UV lamp tube 431 and causing the ultraviolet light to be unable to completely remove the organic molecules in the waste gas, and further reducing the decomposition efficiency of the organic molecules in the waste gas. When the cleaning brush 520 sweeps the surface of the UV lamp tube 431 upward and downward, the dust and particulate matters adsorbed on the UV lamp tube 431 fall on the magnetic field isolation member 53, and the guiding surface 531 can guide the dust and particulate matters to the outside of the UV lamp tube 431, preventing the dust and particulate matters from falling on the lower end of the UV lamp tube 431 again, and the clamping ring 530 can prevent the magnet member 52 from falling.

[0048] 5. After long-term use, the filter screen 28 becomes blocked. The bottom of the filter screen 28 will be adsorbed on the third magnet 35, and the second magnet 272 is adsorbed on the first magnet 240. When the scraping brush 65 rotates to clean and scrape the dust and particulate matter blocked at the top of the filter screen 28, the filter screen 28 is slowly unblocked. The pressure on the top of the filter screen 28 becomes smaller. Under the action of the restoring force and the change-over switch 32 of the first spring 273, the filter screen 28 has an upward movement tendency. At the same time, by adsorbing the bottom of the filter screen 28 with the third magnet 35 and adsorbing the second magnet 272 on the first magnet 240, it can prevent the filter screen 28 from moving directly upward. After the scraping brush 65 collects most of the dust and particulate matter blocked at the top of the filter screen 28 in the collection tank 280, when the filter screen 28 is unblocked to a certain extent, the second magnet 272 is separated from the first magnet 240, and the bottom of the filter screen 28 is separated from the third magnet 35, so that the filter screen 28 can quickly move upward to a certain height, thereby extending the service life of the filter screen 28, reducing the number of maintenance and replacements, and saving manpower. After the filter screen 28 rises and returns to a certain height, the clamping plate 66 will abut against the baffle 290, and the rotating rod 64 will stop rotating. The scraping brush 65 is retracted into the collection tank 280 again. After the filter screen 28 is blocked again, the scraping brush 65 cleans the top of the filter screen 28 again, repeatedly cleaning and scraping the dust and particulate matter on the top of the filter screen 28, thereby extending the service life of the filter screen 28, reducing the number of maintenance and replacements, and saving manpower. When the filter screen 28 is taken out, when the filter screen 28 moves upward, the filter screen 28 can push against the baffle 290 and be received in the baffle groove 29.

[0049] In the present invention, by providing the driving fan 67, after long-term use, the filter screen 28 becomes blocked, the pressure on the top of the filter screen 28 becomes stronger, the filter screen 28 moves downward, the upper sleeve rod 270 moves downward following the filter screen 28, the first spring 273 is compressed, and finally the second magnet 272 is adsorbed on the first magnet 240. When the filter screen 28 moves downward, the scraping brush 65 will be separated from the collection tank 280, and the baffle 290 above the filter screen 28 will be separated from the abutment of the clamping plate 66. The waste gas will impact the driving fan 67, and the driving fan 67 rotates under the impact of the waste gas. The rotating rod 64 will rotate following the driving fan 67. When the rotating rod 64 rotates, due to the relatively heavy filtering mechanism 20, it will not rotate following the rotating rod 64. After the scraping brush 65 is separated from the collection tank 280, the bottom of the scraping brush 65 abuts against the top of the filter screen 28, and the scraping brush 65 rotates following the rotating rod 64, so that the scraping brush 65 can clean and scrape the dust and particulate matter blocked at the top of the filter screen 28, preventing the top of the filter screen 28 from being blocked, resulting in the inability of the activated carbon below the filter screen 28 to adsorb, and thus being unable to treat the waste gas. When the scraping brush 65 cleans and scrapes the dust and particulate matter blocked at the top of the filter screen 28, the dust and particulate matter will move to the collection tank 280 for collection under the cleaning and scraping of the scraping brush 65, preventing the dust and particulate matter from continuing to block the filter screen 28, thereby extending the service life of the filter screen 28, reducing the number of maintenance and replacements, and saving manpower.

[0050] By setting the switching switch 32, after the filter screen 28 is blocked, the pressure on the top of the filter screen 28 becomes stronger. When the filter screen 28 moves downward, the bottom of the filter screen 28 will abut against the third magnet 35. Since the bottom of the filter screen 28 is made of a magnet material, the bottom of the filter screen 28 will be adsorbed on the third magnet 35. When the filter screen 28 continues to move downward, the starting extrusion rod 33 will move along with the filter screen 28 and be used to extrude the switching switch 32. The switching switch 32 is activated, and the current of the UV lamp 431 decreases. Furthermore, the brightness of the UV lamp 431 is turned down to save electric energy and prevent waste of resources. Since the waste gas passing through the filter screen 28 becomes less, the waste gas passing through the filter screen 28 can be photolyzed without high-brightness ultraviolet light, thus saving electric energy and preventing waste of resources.

[0051] By setting the magnet ring 521 and the cleaning brush 520, when the waste gas is discharged into the waste gas treatment device, the device is started, and the electromagnet 51 is energized to generate a magnetic field, so that the magnet ring 521 is adsorbed upward on the bottom of the electromagnet 51. When the magnet ring 521 moves upward close to the bottom of the electromagnet 51, the cleaning brush 520 moves upward along with the magnet ring 521 and is used to clean the surface of the UV lamp 431, preventing the residual volatile organic compounds, dust and particulate matters in the waste gas from adhering to the surface of the UV lamp 431, and further reducing the intensity of the ultraviolet light emitted by the UV lamp 431, resulting in the inability of the ultraviolet light to completely remove the organic molecules in the waste gas, and further reducing the decomposition efficiency of the organic molecules in the waste gas. The magnet ring 521 is relatively heavy and can move downward under the action of gravity when the magnetic field weakens or disappears. After the switching switch 32 is activated, the current of the electromagnet 51 after being energized decreases, the magnetic field of the electromagnet 51 weakens, and the magnet ring 521 and the cleaning brush 520 move downward under the action of gravity, so that the cleaning brush 520 can clean the surface of the UV lamp 431, preventing the residual volatile organic compounds, dust and particulate matters in the waste gas from adhering to the surface of the UV lamp 431, and further reducing the intensity of the ultraviolet light emitted by the UV lamp 431, resulting in the inability of the ultraviolet light to completely remove the organic molecules in the waste gas, and further reducing the decomposition efficiency of the organic molecules in the waste gas.

[0052] By setting the second magnet 272 and the first magnet 240, after long-term use, when the filter screen 28 becomes blocked, the bottom of the filter screen 28 will be adsorbed on the third magnet 35, and the second magnet 272 will be adsorbed on the first magnet 240. When the scraping brush 65 rotates to clean and scrape the dust and particulate matter blocked at the top of the filter screen 28, the filter screen 28 is slowly unclogged. The pressure on the top of the filter screen 28 becomes smaller. Under the action of the restoring force of the first spring 273 and the switching switch 32, the filter screen 28 has an upward movement trend. At the same time, by adsorbing the bottom of the filter screen 28 with the third magnet 35 and the first magnet 240 adsorbing the second magnet 272, it can prevent the filter screen 28 from moving directly upward. After the scraping brush 65 collects most of the dust and particulate matter blocked at the top of the filter screen 28 in the collection tank 280, when the filter screen 28 is unclogged to a certain extent, the second magnet 272 is separated from the first magnet 240, and the bottom of the filter screen 28 is separated from the third magnet 35, enabling the filter screen 28 to quickly recover a certain height upward, thereby extending the service life of the filter screen 28, reducing the number of maintenance and replacements, and saving manpower. After the filter screen 28 becomes blocked again, the scraping brush 65 cleans the top of the filter screen 28 again, repeatedly cleaning and scraping the dust and particulate matter at the top of the filter screen 28, thereby extending the service life of the filter screen 28, reducing the number of maintenance and replacements, and saving manpower.

[0053] The structure of the present invention is simple, which can well extend the service life of the filter screen 28, reduce the number of maintenance and replacements, and save manpower. At the same time, after the filter screen 28 is blocked, it can reduce the current of the UV lamp tube 431, and then lower the brightness of the UV lamp tube 431 to save electric energy and prevent waste of resources.

[0054] All possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.

[0055] The above-described embodiments only represent several embodiments of the present invention. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. A waste gas treatment device for a plastic granulator, characterized in that: The invention comprises a support frame (10), a filter mechanism (20), a switching assembly (30) and a photolysis assembly (40), wherein the support frame (10) is placed on the ground, the upper side wall of the filter mechanism (20) is clamped on the top of the support frame (10), the filter mechanism (20) comprises a filter barrel (21), an air intake pipe (22), an exhaust pipe (23), a clamping ring (24), an activated carbon filter assembly (25) and a rotating assembly (26), the upper side wall of the filter barrel (21) is clamped on the top of the support frame (10), one end of the air intake pipe (22) is inserted into the top of the filter barrel (21), and one end of the exhaust pipe (23) is inserted into the filter barrel (21). The bottom of the barrel (21) is hollow inside the filter barrel (21) to form a receiving groove (210), the retaining ring (24), the activated carbon filter assembly (25) and the rotating assembly (26) are all received in the receiving groove (210), and the retaining ring (24) is fixedly connected to the middle side wall of the receiving groove (210), the top of the retaining ring (24) is installed with a first magnet (240), the bottom of the activated carbon filter assembly (25) is in contact with the top of the first magnet (240), the middle of the rotating assembly (26) is rotatably inserted into the middle of the activated carbon filter assembly (25), and the bottom of the rotating assembly (26) is in contact with the receiving groove (210). ), the switching assembly (30) is fixedly connected to the middle side wall of the containing groove (210), and the switching assembly (30) is located below the activated carbon filtering assembly (25). The side wall of the photolysis assembly (40) is connected to the other end of the exhaust pipe (23). The photolysis assembly (40) comprises a protective shell (41), a removal protective cover (42), a plurality of lamp tube assemblies (43) and a plurality of photocatalysts (44). The protective shell (41) is placed on the ground, and one end of the protective shell (41) is connected to the other end of the exhaust pipe (23). The removal protective cover (42) is installed on one side wall of the protective shell (41). The plurality of lamp tube assemblies ( 43) and a plurality of photocatalysts (44) are installed inside the protective shell (41), and the plurality of lamp tube assemblies (43) and the plurality of photocatalysts (44) are arranged at intervals, the plurality of lamp tube assemblies (43) include a bottom fixing member (430) and a plurality of UV lamp tubes (431), the bottom fixing member (430) is fixedly installed on the bottom of the protective shell (41), the bottoms of the plurality of UV lamp tubes (431) are inserted into the top of the bottom fixing member (430), and the tops of the plurality of UV lamp tubes (431) are connected to the top of the protective shell (41), and a plurality of cleaning assemblies (50) are arranged on the outside of each UV lamp tube (431).

2. The waste gas treatment device for a plastic granulator according to claim 1, characterized in that: The surface of each cleaning component (50) is plated with a reflective film layer. Each cleaning component (50) comprises an electromagnet (51), a magnet component (52) and a magnetic isolation component (53). The electromagnet (51) is fixedly mounted on the outside of the UV lamp tube (431). The magnet component (52) is slidably sleeved on the outside of the UV lamp tube (431), and the magnet component (52) is located below the corresponding electromagnet (51). The magnetic isolation component (53) is fixedly sleeved on the outside of the UV lamp tube (431), and the magnetic isolation component (53) is located below the corresponding magnet component (52). The electromagnet (51) is electrically connected to the switching component (30).

3. The waste gas treatment device for a plastic granulator according to claim 2 is characterized in that: The magnet member (52) comprises a cleaning brush (520) and a magnet ring (521); one end of the magnet ring (521) is slidably abutted against a side wall of the UV lamp tube (431); the magnet ring (521) is fixedly connected to the other end of the cleaning brush (520); and the magnet ring (521) is located below the corresponding electromagnet (51).

4. The waste gas treatment device for a plastic granulator according to claim 3 is characterized in that: The magnetic isolation member (53) comprises a clamping ring (530) and an arc-shaped guide surface (531); the clamping ring (530) and the arc-shaped guide surface (531) are both made of a material capable of isolating a magnetic field; the clamping ring (530) is fixedly sleeved on the outside of the UV lamp tube (431); the clamping ring (530) is located below the corresponding magnet ring (521); and the upper end of the guide surface (531) is fixedly connected to the outer ring of the clamping ring (530).

5. The waste gas treatment device for a plastic granulator according to claim 4, characterized in that: The activated carbon filter assembly (25) comprises a plurality of spring members (27) and a filter screen (28), the bottoms of the plurality of spring members (27) are all in contact with the top of the first magnet (240), the bottom of the filter screen (28) is fixedly connected to the tops of the plurality of spring members (27), and the filter screen (28) contains activated carbon.

6. The waste gas treatment device for a plastic granulator according to claim 5, characterized in that: Each spring member (27) comprises an upper sleeve rod (270), a lower sleeve rod (271), a second magnet (272) and a first spring (273); the top of the upper sleeve rod (270) is fixedly connected to the bottom of the filter element (28); the lower sleeve rod (271) is slidably inserted into the bottom of the upper sleeve rod (270); the second magnet (272) is fixedly mounted on the bottom of the upper sleeve rod (270); the upper end of the first spring (273) is mounted inside the upper sleeve rod (270); and the lower end of the first spring (273) is mounted inside the lower sleeve rod (271).

7. The waste gas treatment device for a plastic granulator according to claim 6, characterized in that: A collecting groove (280) is provided at the top of the filter screen (28), and the collecting groove (280) penetrates the top surface of the filter screen (28). A baffle groove (29) is provided on the inner side wall of the filter barrel (21), and the baffle groove (29) is located above the filter screen (28). A baffle (290) is hingedly mounted at the bottom of the baffle groove (29), and a curved surface is formed at the top of the baffle (290).

8. The waste gas treatment device for a plastic granulator according to claim 7, characterized in that: The rotating assembly (26) comprises a support member (60) and a rotating member (61); both ends of the bottom of the support member (60) are fixedly connected to the middle side wall of the accommodating groove (210); the support member (60) is located below the retaining ring (24); the middle part of the rotating member (61) is rotatably inserted into the middle part of the filter screen (28); and the bottom of the rotating member (61) is rotatably sleeved on the top of the support member (60); the support member (60) comprises a connecting rod (62) and a fixing rod (63); both ends of the connecting rod (62) are fixedly connected to the middle side wall of the accommodating groove (210); the bottom of the fixing rod (63) is fixedly connected to the middle part of the connecting rod (62); and the top of the fixing rod (63) is inserted into the bottom of the rotating member (61).

9. The waste gas treatment device for a plastic granulator according to claim 8, characterized in that: The rotating member (61) comprises a rotating rod (64), a scraping brush (65), a clamping plate (66) and a driving fan (67). The middle portion of the rotating rod (64) is rotatably inserted into the middle portion of the filter screen (28), and the bottom portion of the rotating rod (64) is rotatably sleeved on the top portion of the fixed rod (63). The scraping brush (65) and the clamping plate (66) are respectively mounted on the upper side walls of the rotating rod (64), and the height of the scraping brush (65) is lower than the height of the clamping plate (66). The scraping brush (65) is clamped in the collecting groove (280), and a collecting space (281) is provided between the bottom portion of the scraping brush (65) and the bottom side wall of the collecting groove (280). The driving fan (67) is fixedly sleeved on the top portion of the rotating rod (64), and the baffle (290) is in contact with the clamping plate (66).

10. The waste gas treatment device for a plastic granulator according to claim 9, characterized in that: The switching assembly (30) comprises an L-shaped fixed column (31), a switching switch (32) and a start extrusion rod (33). The lower end of the fixed column (31) is fixedly connected to the middle side wall of the accommodating groove (210), and the fixed column (31) is located below the filter screen (28). A sliding groove (34) is formed at the top of the fixed column (31). A spring groove (36) is formed at the bottom side wall of the sliding groove (34). The switching switch (32) is slidably mounted inside the sliding groove (34). The start extrusion rod (33) The bottom of the rod (33) is slidably inserted into the sliding groove (34), a third magnet (35) is installed on the top of the fixed column (31), the bottom of the filter (28) is made of a magnetic material, the plurality of lamp tube assemblies (43) are electrically connected to the switching switch (32), a second spring (37) is installed in the spring groove (36), one end of the second spring (37) abuts against the bottom of the switching switch (32), and the other end of the second spring (37) abuts against the bottom side wall of the spring groove (36).

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