Asphalt flue gas purification device

Abstract

The invention discloses an asphalt flue gas purification device, and relates to the technical field of asphalt flue gas purification, the asphalt flue gas purification device comprises a rack, a shell is fixedly connected to the rack, a transverse plate is horizontally fixed on one side of the inner wall of the shell, the transverse plate divides the interior of the shell into a filtering channel and a settling channel, and a conical concave diversion trench is formed in the other side of the inner wall of the shell; and the flaring end of the diversion trench is communicated with the filtering channel and the settling channel. According to the invention, the settling channel, the filtering channel and the conical concave diversion trench form the transverse U-shaped channel, so that the flue gas impacts on the concave side wall of the diversion trench before being filtered, the flue gas is buffered, and particulate matters in the flue gas are blocked and rebounded by the inner wall of the diversion trench when impacted on the inner wall of the diversion trench, so that the particulate matters in the flue gas are prevented from entering the filtering channel. According to the flue gas purification device, the two horizontal water curtains are sprayed out of the two sides of the fixed pipe, impurities in the flue gas can be washed out for the first time, and therefore effective purification of the flue gas is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of asphalt fume purification, and in particular to an asphalt fume purification device. Background Art

[0002] When treating asphalt flue gas containing particulate matter, oil mist, and other substances, common treatment methods include physical filtration, cyclone separation, electrostatic capture, and water spray absorption. However, when particulate matter is present, physical filtration and oil removal can easily cause filter clogging, requiring frequent cleaning or replacement. Cyclone separation is less effective. Electrostatic capture generally has high investment costs, and to achieve effective capture, it requires controlling parameters such as flue gas temperature, making it unsuitable for some operating conditions.

[0003] In existing technologies, when flue gas passes through a spray tower, entrained particulate matter, oil mist, or aerosols are intercepted by the water, forming floating particles on the water's surface. To enhance contact between water and air, the tower must be made relatively large to reduce wind speed, and the tower is filled with filler to increase the contact area, which can easily lead to tower blockage. Reducing the viscosity of the spray water to prevent tower blockage can also produce large amounts of wastewater, causing secondary pollution.

[0004] In view of the above problems, an asphalt fume purification device is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide an asphalt fume purification device to solve the above problems.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: The smoke filter is connected to the filter housing, and the filter housing has a bottom surface, and the filter housing has a bottom surface, and the filter housing has a bottom surface, and the filter housing has a bottom surface, and the filter housing has a bottom surface, and the filter housing has a bottom surface, and the filter housing has a bottom surface, and the filter housing has a bottom surface, and the filter housing has a bottom surface, and the filter housing has a bottom surface, and the filter housing has a bottom surface, and the filter housing has a bottom surface, and the filter housing has a bottom surface, and the filter housing has a bottom surface, and the filter housing has a bottom surface, and the filter housing has a bottom surface

[0007] As a preferred solution of the present invention, a communication groove communicating with the fixed pipe is opened in the middle of the horizontal plate, and a liquid inlet pipe communicating with the communication groove is connected to one side of the shell.

[0008] As a preferred solution of the present invention, the scraping mechanism includes a circular plate, a sleeve, a ring and a plurality of interference scrapers. The sleeve is rotatably arranged on one side of the inner wall of the outer shell and is movably sleeved with the fixed tube. The circular plate and the ring are respectively located on both sides of the guide groove, and the circular plate is fixedly sleeved on the outer wall of the sleeve. The plurality of interference scrapers are evenly arranged on the outer wall of the circular plate along the circumferential direction, and the other ends of all the interference scrapers are fixedly connected to the ring. One side of all the interference scrapers is in conflict with the inner wall of the guide groove. A drive motor is installed on the outside of the outer shell, and the output shaft of the drive motor is coaxially fixed with the sleeve.

[0009] As a preferred solution of the present invention, the filtering mechanism includes a first filter plate and a second filter plate, the first filter plate and the second filter plate are fixed on the horizontal plate in sequence, a plurality of diamond-shaped through holes are opened inside the first filter plate, and an air guide hole for smoke to pass through is opened on the second filter plate, and an interlayer groove is opened in the middle of the first filter plate and the second filter plate, a filter mesh is inserted into the interlayer groove of the first filter plate, and an activated carbon filter layer is inserted into the interlayer groove of the second filter plate.

[0010] As a preferred solution of the present invention, the cleaning mechanism includes a connecting sleeve, a rotating ring, a rotating rod and two groups of nozzles. A movable groove is provided inside the connecting groove. The rotating ring is rotatably arranged in the movable groove, and the outer wall of the rotating ring is tightly fitted with the inner wall of the movable groove. One end of the connecting sleeve is fixedly connected to the rotating ring, and the other end of the connecting sleeve passes through the connecting groove and the fixed tube in sequence and is fixedly connected to the inner wall of the sleeve shaft. An arc groove connected to the movable groove is provided on the horizontal plate, and one end of the rotating rod is fixedly connected to the rotating ring after passing through the arc groove, and the rotating rod is slidably connected to the arc groove. A water diversion chamber connected to the interior of the rotating ring is provided inside the rotating rod. The two groups of nozzles are respectively arranged on both sides of the rotating rod, and all of the nozzles are connected to the water diversion chamber.

[0011] As a preferred solution of the present invention, the cleaning mechanism is located between the first filter plate and the second filter plate, and the two groups of nozzles are respectively directed towards the first filter plate and the second filter plate.

[0012] As a preferred solution of the present invention, a circulating water tank is provided on the frame, the liquid outlet pipe is connected to the circulating water tank, the other end of the liquid inlet pipe is connected to a tee pipe, and a water pump and an air pump are also provided on the frame, the output ends of the water pump and the air pump are both connected to the tee pipe, and the input end of the water pump is connected to the circulating water tank.

[0013] As a preferred solution of the present invention, an inspection opening is provided on one side of the top of the housing close to the filter mechanism, and an inspection door is detachably connected to the inspection opening.

[0014] As a preferred solution of the present invention, two L-shaped plates are symmetrically arranged inside the sedimentation channel, the bottoms of the two L-shaped plates are fixedly connected to the inner bottom wall of the outer shell, and the two L-shaped plates are located below the air inlet duct, and the two L-shaped plates form two oil troughs with the inner wall of the outer shell, and both sides of the bottom of the outer shell are connected to oil drain pipes connected to the two oil troughs.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention divides the interior of the shell into a sedimentation channel and a filtration channel by a transverse plate, and the sedimentation channel, the filtration channel and the conical concave guide groove form a transverse U-shaped channel, so that the flue gas first impacts the concave side wall of the guide groove before passing through the filtration, so that the flue gas is initially buffered, and when the particulate matter in the flue gas hits the inner wall of the guide groove, it is blocked and rebounded by the inner wall of the guide groove, so that the particulate matter in the flue gas is blocked and falls into the sedimentation channel, thereby realizing preliminary filtration of the flue gas, and the sprinkler heads on both sides of the fixed pipe spray two horizontal water curtains. When the flue gas passes through the guide groove, the water curtains initially flush the impurities in the flue gas, and flush some of the impurities to the bottom of the sedimentation channel, thereby realizing effective purification of the flue gas.

[0016] 2. The present invention can drive the sleeve shaft and the circular plate, the friction scraper and the collar fixedly connected thereto to rotate synchronously through the setting of the scraping mechanism. During the rotation process, the friction scraper can scrape off the impurities attached to the inner wall of the guide trough, thereby avoiding the accumulation of impurities on the inner wall of the guide trough and ensuring the smoothness of the guide trough. At the same time, during the rotation process, the friction scraper can disturb the sewage in the guide trough and accelerate the separation of oil particles in the sewage.

[0017] 3. This invention utilizes a filtration mechanism, enabling the first filter plate to initially filter larger particles of impurities from the flue gas through its internal diamond-shaped through-holes. The inclusion of a mesh filter further enhances the filtration of finer particles. Simultaneously, the activated carbon filter layer within the interlayer grooves effectively absorbs harmful substances in the flue gas, such as odors and toxic gases, thereby achieving deep purification of the flue gas. The combination of the first and second filter plates not only improves purification efficiency but also ensures purification quality, resulting in a more purified flue gas after treatment by this filtration mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0019] Figure 1 The present invention provides a schematic diagram of the overall structure of an asphalt fume purification device Figure 1 ; Figure 2 The present invention provides a schematic diagram of the overall structure of an asphalt fume purification device Figure 2 ; Figure 3 A cross-sectional view of the internal structure of the housing is provided for the present invention; Figure 4 The present invention provides Figure 3 A magnified view of the structure at point A; Figure 5 A partial structural cross-sectional view of the housing is provided for the present invention; Figure 6 Provides a structural schematic diagram of a scraping mechanism and a filtering mechanism for the present invention; Figure 7 A partial structural cross-sectional view of the filtering mechanism of the present invention is provided.

[0020] The numbers in the figure represent the following: 1. Frame; 2. Housing; 3. Air inlet duct; 4. Air outlet duct; 5. Scraping mechanism; 6. Fixing pipe; 7. Liquid outlet pipe; 8. Filter mechanism; 9. Cleaning mechanism; 10. Circulating water tank; 11. Tee pipe; 12. Water pump; 13. Air pump; 14. Drive motor; 15. Inspection door; 16. Oil drain pipe; 17. Liquid inlet pipe 21. Horizontal plate; 22. Filtration channel; 23. Sedimentation channel; 24. Guide groove; 25. L-shaped plate; 26. Oil trough; 27. Connecting groove; 51. Circular plate; 52. Sleeve; 53. Ring; 54. Contact scraper; 61. Sprinkler head; 81. First filter plate; 82. Second filter plate; 83. Through hole; 84. Air guide hole; 85. Interlayer groove; 86. Filter screen; 87. Activated carbon filter layer; 91. Connecting sleeve; 92. Rotating ring; 93. Rotating rod; 94. Sprinkler head; 95. Arc groove; 96. Water distribution chamber; 97. Movable groove. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figure 1 - Figure 7 As shown, the present invention provides an asphalt fume purification device, including a frame 1, a shell 2 is fixedly connected to the frame 1, an air inlet duct 3 and an air outlet duct 4 are sequentially arranged on one side of the shell 2 from bottom to top, a horizontal plate 21 is horizontally fixed on one side of the inner wall of the shell 2, and the horizontal plate 21 divides the interior of the shell 2 into a filtering channel 22 and a sedimentation channel 23, the air inlet duct 3 is connected to the sedimentation channel 23, and the air outlet duct 4 is connected to the filtering channel 22, a liquid outlet pipe 7 connected to the sedimentation channel 23 is provided at the bottom of the shell 2, and a conical inner wall is provided on the other side of the shell 2. The concave guide groove 24, the flared end of the guide groove 24 is connected to the filter channel 22 and the sedimentation channel 23, and a scraping mechanism 5 for cleaning the inner wall of the guide groove 24 is provided on one side of the inner wall of the outer shell 2, and a fixed pipe 6 is connected between the scraping mechanism 5 and the horizontal plate 21. The fixed pipe 6 is symmetrically provided with two groups of spray heads 61 in the horizontal direction. The horizontal plate 21 is provided with a filtering mechanism 8 for filtering the flue gas and a cleaning mechanism 9 for cleaning the filtering mechanism 8. The cleaning mechanism 9 is provided on the outside of the filtering mechanism 8 and is connected to the scraping mechanism 5.

[0023] A communication groove 27 communicating with the fixed pipe 6 is formed in the middle of the transverse plate 21 , and a liquid inlet pipe 17 communicating with the communication groove 27 is connected to one side of the housing 2 .

[0024] When the present invention is in use, the flue gas is introduced into the settling channel 23 through the air inlet pipe 3, and the guide groove 24 connects the settling channel 23 with the filter channel 22, so that the flue gas flows into the guide groove 24. The conical concave design of the guide groove 24 can guide the flue gas to flow, so that it can smoothly enter the settling channel 23. Subsequently, the cleaning liquid is injected into the connecting groove 27 through the liquid inlet pipe 17. The cleaning liquid is sprayed through the spray heads 61 on both sides of the fixed pipe 6, so that two horizontal water curtains are sprayed on both sides of the fixed pipe 6. When the flue gas passes through the guide groove 24, the water curtain performs an initial flushing of the impurities in the flue gas, and flushes some of the impurities to the bottom of the settling channel 23. In addition, due to the conical concave setting of the guide groove 24, the flue gas first impacts the guide groove when entering the interior of the shell 2. The flue gas is initially buffered by the concave sidewalls of the guide groove 24, and when the particles in the flue gas hit the inner wall of the guide groove 24, they are blocked and rebounded by the inner wall of the guide groove 24, causing the particles in the flue gas to fall into the sedimentation channel after being blocked. After being guided and initially flushed by the guide groove 24, the flue gas enters the filter channel 22. At this time, the filter mechanism 8 begins to finely filter the flue gas, effectively intercepting and removing the remaining tiny particles and harmful substances. At the same time, the scraping mechanism 5 rotates under power drive. As the scraping mechanism 5 rotates, it can continuously scrape the inner wall of the guide groove 24, scraping off impurities attached to the inner wall of the guide groove 24, preventing impurities from accumulating on the inner wall of the guide groove 24 and affecting the flow efficiency of the flue gas. The scraping mechanism 5 is connected to the cleaning mechanism 9. When the scraping mechanism 5 rotates, it can drive the cleaning mechanism 9 to clean the outside of the filter mechanism 8, further ensuring the filtering effect and improving the filtering efficiency of the flue gas. The filtered and purified flue gas is discharged through the air outlet duct 4, while impurities at the bottom of the settling channel 23 are discharged through the liquid outlet pipe 7, achieving flue gas purification. This solves the common problem of existing pre-treatment equipment in being unable to filter flue gas containing oil mist and asphalt fumes. It removes oil mist and asphalt fumes from the flue gas and reduces filter blockage.

[0025] After the flue gas is sprayed by the water curtain, the wastewater falls into the sedimentation channel 23. The heavier impurity particles in the wastewater gradually settle to the bottom under the action of gravity and are regularly discharged through the liquid outlet pipe 7, thus achieving effective flue gas purification. The purified flue gas is smoothly discharged from the device through the air outlet duct 4, achieving the desired purification effect.

[0026] Furthermore, two L-shaped plates 25 are symmetrically arranged inside the sedimentation channel 23, and the bottoms of the two L-shaped plates 25 are fixedly connected to the inner bottom wall of the outer shell 2, and the two L-shaped plates 25 are both located below the air inlet duct 3, and the two L-shaped plates 25 and the inner wall of the outer shell 2 form two oil grooves 26, and both sides of the bottom of the outer shell 2 are connected to oil drain pipes 16 connected to the two oil grooves 26.

[0027] Since the flue gas contains particles, oil mist and other substances. Therefore, after the flue gas is sprayed, the oil in the sewage will float on the water surface. When the water level of the sewage is higher than the L-shaped plate 25, the oil on the surface of the sewage is effectively guided into the oil tank 26. The oil tank 26 is located between the L-shaped plate 25 and the inner wall of the shell 2, forming a relatively closed collection space, so that the oil particles can accumulate in it. When the oil reaches a certain level, it can be smoothly discharged to the outside of the device through the oil drain pipe 16. It not only avoids the accumulation of oil inside the device and reduces maintenance costs, but also ensures the continuous and stable effect of the flue gas purification. It is worth noting that in order to prevent the sewage inside the sedimentation channel 23 from entering the air intake pipe, the height of the L-shaped plate 25 should be lower than the air intake pipe to ensure that the flue gas can smoothly enter the sedimentation channel 23, and at the same time prevent the sewage from backflowing and affecting the flue gas purification process.

[0028] Furthermore, the scraping mechanism 5 includes a circular plate 51, a sleeve shaft 52, a ring 53 and a plurality of conflicting scrapers 54. The sleeve shaft 52 is rotatably set on one side of the inner wall of the outer shell 2 and is movably sleeved with the fixed tube 6. The circular plate 51 and the ring 53 are respectively located on both sides of the guide groove 24, and the circular plate 51 is fixedly sleeved on the outer wall of the sleeve shaft 52. The plurality of conflicting scrapers 54 are evenly arranged on the outer wall of the circular plate 51 along the circumferential direction, and the other ends of all the conflicting scrapers 54 are fixedly connected to the ring 53. One side of all the conflicting scrapers 54 conflicts with the inner wall of the guide groove 24. A drive motor 14 is installed on the outside of the outer shell 2, and the output shaft of the drive motor 14 is coaxially fixed with the sleeve shaft 52.

[0029] When the driving motor 14 is working, it can drive the sleeve shaft 52 and the circular plate 51, the friction scraper 54 and the collar 53 fixed thereto to rotate synchronously. During the rotation process, the friction scraper 54 can scrape off the impurities attached to the inner wall of the guide groove 24, thereby avoiding the accumulation of impurities on the inner wall of the guide groove 24 and ensuring the smoothness of the guide groove 24. At the same time, during the rotation process, the friction scraper 54 can disturb the sewage in the guide groove 24, accelerate the separation of oil particles in the sewage, improve the efficiency of oil particles entering the oil tank 26, and further enhance the purification effect of the device.

[0030] The filtering mechanism 8 includes a first filter plate 81 and a second filter plate 82, which are fixed on the horizontal plate 21 in sequence. A plurality of diamond-shaped through holes 83 are provided inside the first filter plate 81, and an air guide hole 84 for smoke to pass through is provided on the second filter plate 82. An interlayer groove 85 is provided in the middle of the first filter plate 81 and the second filter plate 82. A filter mesh 86 is inserted into the interlayer groove 85 of the first filter plate 81, and an activated carbon filter layer 87 is inserted into the interlayer groove 85 of the second filter plate 82.

[0031] The first filter plate 81 can perform preliminary filtration of larger particulate impurities in the flue gas through the diamond-shaped through-holes 83 inside it, and the provision of the filter mesh 86 further improves the filtering effect on fine particulate impurities. The air guide holes 84 on the second filter plate 82 allow the flue gas to pass through, ensuring that the flue gas that has undergone preliminary filtration can smoothly enter the second filter plate 82 and be further purified. At the same time, the activated carbon filter layer 87 in its interlayer groove 85 can effectively adsorb harmful substances in the flue gas, such as odors, toxic smoke, etc., thereby achieving deep purification of the flue gas. The combined use of the first filter plate 81 and the second filter plate 82 not only improves the purification efficiency, but also ensures the purification quality, making the flue gas treated by the filter mechanism 8 purer. In addition, the provision of the interlayer groove 85 also makes it convenient for users to clean and replace the filter mesh 86 and the activated carbon filter layer 87, ensuring the continued efficient operation of the device.

[0032] Furthermore, an inspection port is provided on one side of the top of the housing 2 close to the filter mechanism 8, and an inspection door 15 is detachably connected to the inspection port.

[0033] The provision of access door 15 allows the user to conveniently replace the filter screen 86 and activated carbon filter layer 87 in the filter mechanism 8, as well as clean and maintain the filter mechanism 8 and other components that may accumulate dirt, greatly improving the device's usability and maintainability. Furthermore, the detachable connection between access door 15 and the inspection port ensures that access door 15 fits tightly against the housing 2 when closed, preventing unfiltered smoke from leaking through the inspection port and ensuring the device's sealing and purification effectiveness.

[0034] The cleaning mechanism 9 includes a connecting sleeve 91, a rotating ring 92, a rotating rod 93 and two groups of nozzles 94. A movable groove 97 is provided inside the connecting groove 27. The rotating ring 92 is rotatably set in the movable groove 97, and the outer wall of the rotating ring 92 is tightly fitted with the inner wall of the movable groove 97. One end of the connecting sleeve 91 is fixedly connected to the rotating ring 92, and the other end of the connecting sleeve 91 passes through the connecting groove 27 and the fixed pipe 6 in sequence and is fixedly connected to the inner wall of the sleeve shaft 52. An arc groove 95 communicating with the movable groove 97 is provided on the cross plate 21. One end of the rotating rod 93 passes through the arc groove 95 and is fixedly connected to the rotating ring 92, and the rotating rod 93 is slidably connected to the arc groove 95. A water diversion chamber 96 communicating with the interior of the rotating ring 92 is provided inside the rotating rod 93. Two groups of nozzles 94 are respectively arranged on both sides of the rotating rod 93, and all nozzles 94 are connected to the water diversion chamber 96.

[0035] The cleaning mechanism 9 is located between the first filter plate 81 and the second filter plate 82 , and the two groups of nozzles 94 are directed toward the first filter plate 81 and the second filter plate 82 respectively.

[0036] A circulating water tank 10 is provided on the frame 1. The liquid outlet pipe 7 is connected to the circulating water tank 10. The other end of the liquid inlet pipe 17 is connected to a tee pipe 11. A water pump 12 and an air pump 13 are also provided on the frame 1. The output ends of the water pump 12 and the air pump 13 are both connected to the tee pipe 11, and the input end of the water pump 12 is connected to the circulating water tank 10. Furthermore, a valve is provided on the tee pipe 11. When it is necessary to clean the filter mechanism 8, the user can inject water from an external source or water from the circulating water tank 10 into the connecting sleeve 91 through the water pump 12. After entering the connecting sleeve 91, the water enters the water diversion chamber 96 through the rotating ring 92 and is finally sprayed out from the two sets of nozzles 94 to rinse the first filter plate 81 and the second filter plate 82. Because the rotating rod 93 is slidably connected to the arcuate groove 95, and the rotating ring 92 can rotate within the movable groove 97, when the drive motor 14 drives the sleeve 52 to rotate, the rotating rod 93 and the nozzle 94 will also rotate and move accordingly, thereby cleaning the filter mechanism 8, avoiding cleaning blind spots, and improving cleaning efficiency. In addition, the provision of the cleaning mechanism 9 also allows the user to clean the filter mechanism 8 without disassembling it, greatly simplifying the cleaning process and improving the ease of use of the device.

[0037] It is worth noting that a valve can be provided inside the rotating rod 93 to control the water flow inside the water diversion chamber 96 to prevent the cleaning mechanism 9 from spraying water onto the outer wall of the filtering mechanism 8 when the filtering mechanism 8 is working, thereby affecting the filtering effect.

[0038] After the filter mechanism 8 is cleaned, the valve connected to the water pump 12 on the three-way pipe 11 is closed, and the valve connected to the air pump 13 is opened. The air pump 13 starts and delivers external clean gas to the connecting groove 27, and blows it onto the filter mechanism 8 and the inner wall of the guide groove 24 through the nozzle 94 and the spray head 61 respectively, drying the water droplets attached to the filter mechanism 8 and the inner wall of the guide groove 24, avoiding the secondary pollution problem caused by the residual water droplets, and also ensuring the dryness of the internal environment of the device, thereby extending the service life of the device. In addition, by setting up a circulating water tank 10, the sewage generated during the cleaning process can be collected and stored so that the sewage can be filtered and reused, thereby realizing the conservation and recycling of water resources. A drain valve is also provided at the bottom of the circulating water tank 10. When the sewage in the circulating water tank 10 accumulates to a certain extent, the user can discharge the sewage by opening the drain valve, which is convenient for subsequent sewage treatment.

[0039] The scope of protection of the application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and scope of protection of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present application.

Claims

1. An asphalt fume purification device, comprising a frame (1), a housing (2) fixedly connected to the frame (1), an air inlet duct (3) and an air outlet duct (4) being sequentially arranged on one side of the housing (2) from bottom to top, characterized in that: A horizontal plate (21) is fixed horizontally on one side of the inner wall of the shell (2), and the horizontal plate (21) divides the interior of the shell (2) into a filtering channel (22) and a sedimentation channel (23). The air inlet duct (3) is connected to the sedimentation channel (23), and the air outlet duct (4) is connected to the filtering channel (22). A liquid outlet pipe (7) connected to the sedimentation channel (23) is provided at the bottom of the shell (2). A conical concave guide groove (24) is provided on the other side of the inner wall of the shell (2). The expanded end of the guide groove (24) is connected to the filtering channel (22) and the sedimentation channel. (23) is connected, a scraping mechanism (5) for cleaning the inner wall of the guide groove (24) is rotatably provided on one side of the inner wall of the shell (2), and a fixed pipe (6) is connected between the scraping mechanism (5) and the horizontal plate (21), and a plurality of spray heads (61) are provided on both sides of the fixed pipe (6), and a filtering mechanism (8) for filtering the smoke and a cleaning mechanism (9) for cleaning the filtering mechanism (8) are provided on the horizontal plate (21), and the cleaning mechanism (9) is provided on the outside of the filtering mechanism (8) and is connected to the scraping mechanism (5).

2. The asphalt fume purification device according to claim 1, characterized in that: A communication groove (27) communicating with the fixed pipe (6) is provided in the middle of the transverse plate (21), and a liquid inlet pipe (17) communicating with the communication groove (27) is connected to one side of the housing (2).

3. The asphalt fume purification device according to claim 2, characterized in that: The scraping mechanism (5) comprises a circular plate (51), a sleeve shaft (52), a sleeve ring (53) and a plurality of abutting scrapers (54). The sleeve shaft (52) is rotatably arranged on one side of the inner wall of the housing (2) and is movably sleeved with the fixed tube (6). The circular plate (51) and the sleeve ring (53) are respectively located on both sides of the guide groove (24), and the circular plate (51) is fixedly sleeved on the outer wall of the sleeve shaft (52). The plurality of abutting scrapers (54) are evenly arranged on the outer wall of the circular plate (51) along the circumferential direction, and the other ends of all the abutting scrapers (54) are fixedly connected to the sleeve ring (53). One side of all the abutting scrapers (54) abuts against the inner wall of the guide groove (24). A driving motor (14) is installed outside the housing (2), and the output shaft of the driving motor (14) is coaxially fixed with the sleeve shaft (52).

4. The asphalt fume purification device according to claim 1, characterized in that: The filtering mechanism (8) comprises a first filter plate (81) and a second filter plate (82), wherein the first filter plate (81) and the second filter plate (82) are fixed on the transverse plate (21) in sequence, a plurality of diamond-shaped through holes (83) are provided inside the first filter plate (81), an air guide hole (84) for smoke to pass through is provided on the second filter plate (82), an interlayer groove (85) is provided in the middle of the first filter plate (81) and the second filter plate (82), a filter mesh (86) is inserted inside the interlayer groove (85) of the first filter plate (81), and an activated carbon filter layer (87) is inserted inside the interlayer groove (85) of the second filter plate (82).

5. The asphalt fume purification device according to claim 3, characterized in that: The cleaning mechanism (9) includes a connecting sleeve (91), a rotating ring (92), a rotating rod (93) and two groups of nozzles (94). A movable groove (97) is provided inside the connecting groove (27). The rotating ring (92) is rotatably arranged in the movable groove (97), and the outer wall of the rotating ring (92) is tightly fitted with the inner wall of the movable groove (97). One end of the connecting sleeve (91) is fixedly connected to the rotating ring (92), and the other end of the connecting sleeve (91) passes through the connecting groove (27) and the fixed pipe (6) in sequence and is fixedly connected to the inner wall of the sleeve shaft (52). The connecting sleeve ( 91) is provided with a plurality of connection ports connected to the connecting groove (27) on the side wall, and an arc groove (95) connected to the movable groove (97) is provided on the horizontal plate (21), one end of the rotating rod (93) passes through the arc groove (95) and is fixedly connected to the rotating ring (92), and the rotating rod (93) is slidably connected to the arc groove (95), and a water diversion chamber (96) connected to the inside of the rotating ring (92) is provided inside the rotating rod (93), and two groups of the nozzles (94) are respectively arranged on both sides of the rotating rod (93), and all the nozzles (94) are connected to the water diversion chamber (96).

6. The asphalt fume purification device according to claim 5, characterized in that: The cleaning mechanism (9) is located between the first filter plate (81) and the second filter plate (82), and the two groups of nozzles (94) are directed toward the first filter plate (81) and the second filter plate (82), respectively.

7. The asphalt fume purification device according to claim 2, characterized in that: A circulating water tank (10) is provided on the frame (1), the liquid outlet pipe (7) is in communication with the circulating water tank (10), the other end of the liquid inlet pipe (17) is connected to a three-way pipe (11), and a water pump (12) and an air pump (13) are also provided on the frame (1), the output ends of the water pump (12) and the air pump (13) are both connected to the three-way pipe (11), and the input end of the water pump (12) is connected to the circulating water tank (10).

8. The asphalt fume purification device according to claim 1, characterized in that: An inspection opening is provided on one side of the top of the housing (2) close to the filter mechanism (8), and an inspection door (15) is detachably connected to the inspection opening.

9. The asphalt fume purification device according to claim 1, characterized in that: Two L-shaped plates (25) are symmetrically arranged inside the sedimentation channel (23), the bottoms of the two L-shaped plates (25) are fixedly connected to the inner bottom wall of the shell (2), and the two L-shaped plates (25) are located below the air inlet duct (3), and the two L-shaped plates (25) and the inner wall of the shell (2) form two oil troughs (26), and both sides of the bottom of the shell (2) are connected to oil drain pipes (16) that are connected to the two oil troughs (26).

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