A flue gas purification device in the production process of modified asphalt

Abstract

The present invention relates to the technical field of flue gas purification, and in particular to a flue gas purification device in a modified asphalt production process, comprising a bottom plate, a spray tank, an air inlet pipe, an exhaust pipe, a liquid guide pipe and a diffusion nozzle, etc. The top of the bottom plate is connected to a spray tank, the lower part of the spray tank is connected to an air inlet pipe, the top of the spray tank is connected to an exhaust pipe, two liquid guide pipes are connected to the spray tank, and the bottom of the liquid guide pipes are all connected to three diffusion nozzles. The present invention can spray water onto the flue gas through the diffusion nozzle to separate solid particles in the flue gas, and the filler in the mesh frame can purify the flue gas. The screw motor can drive the mesh frame to move to the left, the mesh frame on the right side enters the spray tank, and the mesh frame on the left side is moved out of the spray tank, and the old filler is quickly replaced, and there is no need to stop the machine for a long time when replacing the old filler, thereby improving work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas purification, and in particular to a flue gas purification device in a modified asphalt production process. Background Art

[0002] In the production process of modified asphalt, flue gas is generally produced. The flue gas contains a large amount of irritating substances such as particulate smoke, chlorine sulfide, sulfur dioxide, etc. These irritating substances will pollute the environment, so the flue gas needs to be purified.

[0003] At present, the solid particles in the flue gas are mainly separated and removed by using a spray tower as the first cleaning device. At the same time, a filler is arranged under the water spray nozzle to purify the flue gas. When the service life of the filler expires or there are too many pollutants attached to it, its performance will decline and it needs to be replaced. When replacing it, the spray tower needs to be shut down and drained first. First, stop the operation of the spray tower and drain the water in the tower to ensure that no water or sewage splashes when taking out the filler. Then take the filler out layer by layer and take it out. The filler is in the spray tower, and the removal process is inconvenient, resulting in a long replacement time. In addition, the flue gas cannot be purified when the filler is replaced, resulting in a long interruption time of the purification work, thereby affecting work efficiency. Summary of the invention

[0004] In order to overcome the shortcomings that the filler is in the spray tower and the removal process is inconvenient, resulting in a long replacement time, and the flue gas cannot be purified when the filler is replaced, resulting in a long interruption time of the purification work, thereby affecting the work efficiency, the present invention provides a flue gas purification device in the modified asphalt production process.

[0005] The technical implementation scheme of the present invention is: a flue gas purification device in the process of modified asphalt production, including a bottom plate, a spray tank, an air inlet pipe, an exhaust pipe, a liquid guide pipe, a diffusion nozzle, a liquid inlet pipe, a conical cylinder, a vertical plate, a slide rail, a slider, a guide frame, a slide plate, a sliding frame, a mesh frame, a moving mechanism and a sealing mechanism. The top of the bottom plate is connected to a spray tank, the lower part of the spray tank is connected to an air inlet pipe, the top of the spray tank is connected to an exhaust pipe, two liquid guide pipes are connected to the spray tank, the bottom of the liquid guide pipes are connected to three diffusion nozzles, the two liquid guide pipes are connected to the liquid inlet pipe, a group of conical cylinders are connected to the upper and lower sides of the spray tank, each group has two conical cylinders, and the front and rear sides of the top of the bottom plate There are vertical plates connected symmetrically on the left and right, two slide rails are connected between the two vertical plates on the front side, and two slide rails are also connected between the two vertical plates on the rear side. Slide blocks are slidably connected to the slide rails. Guide frames are symmetrically connected to the left and right sides of the spray tank. Slide plates are connected to the slide blocks, which are located in the guide frames. Slide racks are slidably connected to the slide plates, which are located in the guide frames. Two screen frames for storing fillers are connected between the two sliding racks facing each other front and back. The moving mechanism is used to move the screen frame. The screen frame enters the spray tank through the guide frame and moves between the two conical cylinders in the same group. The sealing mechanism is used to strengthen the sealing between the screen frame and the conical cylinder.

[0006] Furthermore, the moving mechanism includes a contact block, a screw, a screw motor and a nitrogen spring. The left and right sides of the sliding frame are connected with contact blocks. The rear slide rail is rotatably connected with a screw. The screw and the rear slider are connected by a thread. The front slide rail is installed with a screw motor. The screw of the screw motor and the front slider are connected by a thread. The screw and the screw of the screw motor are driven by a pulley group. Two nitrogen springs are connected to the bottom of the slider. The contact block on the right is located between the two nitrogen springs. The nitrogen spring is used to push the sliding frame to move to the left. The sliding frame drives the screen frame to move to the left, and moves the screen frame between the two conical cylinders in the same group.

[0007] Furthermore, the sealing mechanism includes a sealing ring, a return spring and an inserting assembly. The sealing rings are slidably connected to the upper and lower sides of the screen frame. The return springs are evenly spaced and connected between the sealing ring and the screen frame. The inserting assembly is used to put the sealing ring onto the conical cylinder to enhance the sealing between the screen frame and the conical cylinder.

[0008] Furthermore, the insertion component includes a cylindrical block and a push block. The cylindrical blocks are connected to the front and rear sides of the sealing ring, and the push blocks are symmetrically connected to the upper and lower sides of the slide plate. The push blocks are used to push the cylindrical blocks so that the sealing ring is sleeved on the conical cylinder. The push blocks are provided with trapezoidal grooves. When the cylindrical block moves into the trapezoidal groove, the sealing ring is reset and detached from the conical cylinder.

[0009] Furthermore, it also includes a recovery mechanism, which includes a recovery box, a drainage pipe, a water pump and a filter assembly. The top of the bottom plate is connected to the recovery box, and the bottom of the spray tank is connected to the drainage pipe. The drainage pipe runs through the top of the recovery box, and the wastewater flows into the recovery box through the drainage pipe. The recovery box is connected to a water pump, and the lower end of the inlet pipe is connected to the water outlet end of the water pump. The filter assembly is used to filter solid particles in the wastewater.

[0010] Furthermore, the filter assembly includes a baffle, filter plate one and filter plate two. The baffle is connected to the recovery box, and filter plate one is connected to the baffle. Wastewater flows through filter plate one to the front side of the baffle. Filter plate one can filter solid particles in the wastewater. Filter plate two for filtering solid particles in the wastewater is connected to the recovery box, and the liquid inlet pipe passes through filter plate two. The baffle and filter plate two divide the recovery box into three spaces. The rear side of the baffle is an unfiltered space, and the drain pipe is located in the unfiltered space. The baffle and filter plate two are between the primary filter space, and the primary filter space is open. Filter plate two is "L-shaped". Filter plate two and the recovery box form a closed secondary filter space, and the water pump is located in the secondary filter space.

[0011] Furthermore, it also includes a collecting mechanism, which includes a collecting box and a wastewater pipe. The left and right sides of the spray tank are connected to the collecting boxes. The wastewater dripping from the net frame will fall into the collecting box. The bottom middle of the collecting box is connected to the wastewater pipe.

[0012] Furthermore, an annular inclined surface is provided on the inner side of the sealing ring, and the inclined surface is matched with the outer contour of the conical cylinder.

[0013] Compared with the prior art, the present invention has the following advantages: 1. The present invention can spray water onto the flue gas through a diffusion nozzle to separate the solid particles in the flue gas, and the filler in the mesh frame can purify the flue gas. The screw motor can drive the mesh frame to move to the left, and the mesh frame on the right enters the spray tank, and the mesh frame on the left is moved out of the spray tank, so that the old filler can be replaced quickly, and there is no need to shut down for a long time when replacing the old filler, thereby improving work efficiency.

[0014] 2. When purifying the flue gas, the waste water will flow into the recovery box through the drain pipe. The water pump can suck the water into the liquid inlet pipe, and the water will be sprayed out from the diffusion nozzle through the liquid guide pipe, so that the waste water can be recycled and water resources can be saved.

[0015] 3. The waste water in the screen frame will drip into the collection box, and the waste water in the collection box will be discharged through the waste water pipe to prevent the waste water from dripping onto the bottom plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown.

[0017] Figure 2A first cross-sectional view of a spray tank according to the present invention is shown.

[0018] Figure 3 The three-dimensional structural schematic diagram of the slider, guide frame, slide plate, sliding frame and screen frame of the present invention is shown.

[0019] Figure 4 A second cross-sectional view of the spray tank of the present invention is shown.

[0020] Figure 5 A three-dimensional structural schematic diagram of the slide plate and the sliding frame of the present invention is shown.

[0021] Figure 6 The three-dimensional structural schematic diagram of the sliding frame and the screen frame of the present invention is shown.

[0022] Figure 7 A first three-dimensional structural schematic diagram of the moving mechanism of the present invention is shown.

[0023] Figure 8 A second three-dimensional structural schematic diagram of the moving mechanism of the present invention is shown.

[0024] Fig. 9 A schematic diagram of the three-dimensional structure of the contact block and the nitrogen spring of the present invention is shown.

[0025] Fig.10 A three-dimensional structural schematic diagram of the sealing mechanism of the present invention is shown.

[0026] Fig.11 The figure shows the state that the sealing ring of the present invention is sleeved on the conical cylinder.

[0027] Fig.12 The three-dimensional structural schematic diagram of the push block of the present invention is shown.

[0028] Fig.13 The three-dimensional structural schematic diagram of the cylindrical block and the push block of the present invention is shown.

[0029] Fig.14 A cross-sectional view of a recovery box of the present invention is shown.

[0030] Fig.15 A three-dimensional structural schematic diagram of the collection box and the wastewater pipe of the present invention is shown.

[0031] In the accompanying drawings: 1-bottom plate, 2-spray tank, 3-inlet pipe, 4-exhaust pipe, 5-liquid guide pipe, 6-diffuser nozzle, 7-liquid inlet pipe, 8-conical cylinder, 9-vertical plate, 10-slide rail, 11-slider, 12-guide frame, 13-slide plate, 14-sliding frame, 15-net frame, 16-contact block, 17-screw, 18-screw motor, 19-nitrogen spring, 20-sealing ring, 21-reset spring, 22-cylindrical block, 23-push block, 24-recovery box, 25-drain pipe, 26-water pump, 27-baffle, 28-filter plate one, 29-filter plate two, 30-collection box, 31-wastewater pipe. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0033] Implementation 1: Reference Figure 1-Figure 13 A flue gas purification device for modified asphalt production process includes a bottom plate 1, a spray tank 2, an air inlet pipe 3, an exhaust pipe 4, a liquid guide pipe 5, a diffusion nozzle 6, a liquid inlet pipe 7, a conical cylinder 8, a vertical plate 9, a slide rail 10, a slider 11, a guide frame 12, a slide plate 13, a sliding frame 14, a mesh frame 15, a moving mechanism and a sealing mechanism. The top left side of the bottom plate 1 is connected to the spray tank 2, the lower right side of the spray tank 2 is connected to the air inlet pipe 3, the middle of the top of the spray tank 2 is connected to the exhaust pipe 4, and the upper front side of the spray tank 2 is connected to two liquid guide pipes 5. The two liquid guide pipes 5 are arranged opposite to each other up and down. The bottom of the liquid guide pipes 5 are evenly spaced and connected to three diffusion nozzles 6. The front ends of the two liquid guide pipes 5 are commonly connected to the liquid inlet pipe 7. A group of conical cylinders 8 are connected to the upper and lower sides of the spray tank 2, each group has two conical cylinders 8, and the two in the same group are connected to the upper and lower sides of the spray tank 2. The conical cylinder 8 is arranged relatively to each other up and down, and vertical plates 9 are symmetrically connected to the front and back sides of the top of the bottom plate 1. Two slide rails 10 are connected between the two vertical plates 9 on the front side, and two slide rails 10 are also connected between the two vertical plates 9 on the back side. The two slide rails 10 on the front side and the two slide rails 10 on the back side are arranged relatively to each other up and down, and sliders 11 are slidably connected to the slide rails 10. The left and right sides of the spray tank 2 are symmetrically connected to the guide frames 12 up and down, and the sliders 11 are connected to the slides 13, and the sliders 13 are located in the guide frames 12. Slide racks 14 are slidably connected to the slides 13, and the slide racks 14 are located in the guide frames 12. Two screen frames 15 are connected between the two slide racks 14 opposite to each other front and back, and a moving mechanism is used to move the screen frame 15. The sealing mechanism is used to strengthen the sealing between the screen frame 15 and the conical cylinder 8.

[0034] Reference Figure 7-Figure 9The moving mechanism includes a contact block 16, a screw 17, a screw motor 18 and a nitrogen spring 19. The left and right sides of the sliding frame 14 are connected with contact blocks 16. The rear slide rail 10 is rotatably connected with a screw 17. The screw 17 and the rear slider 11 are threadedly connected. The front slide rail 10 is installed with a screw motor 18. The screw of the screw motor 18 and the front slider 11 are threadedly connected. The screw of the screw motor 18 and the screw 17 are driven by a pulley set. The left and right sides of the bottom of the slider 11 are connected with nitrogen springs 19, and the contact block 16 on the right is located between the two nitrogen springs 19.

[0035] Reference Figure 10-13 The sealing mechanism includes a sealing ring 20, a return spring 21 and a sleeve assembly. The sealing ring 20 is slidably connected to the upper and lower sides of the screen frame 15. The inner side of the sealing ring 20 is provided with an annular inclined surface, and the inclined surface is adapted to the outer contour of the conical tube 8. Four return springs 21 are evenly spaced and connected between the sealing ring 20 and the screen frame 15. The sleeve assembly is used to sleeve the sealing ring 20 onto the conical tube 8 to strengthen the sealing between the screen frame 15 and the conical tube 8.

[0036] Reference Figure 10-13 The inserting assembly includes a cylindrical block 22 and a push block 23. The cylindrical blocks 22 are connected to the front and rear sides of the sealing ring 20. The push blocks 23 are symmetrically connected to the upper and lower sides of the slide plate 13. The push blocks 23 are provided with trapezoidal grooves.

[0037] Initially, the contact block 16 on the left is blocked by the guide frame 12 on the left, so that the sliding frame 14 and the contact block 16 cannot move to the right. The contact block 16 on the right blocks the nitrogen spring 19 on the left, so that the nitrogen spring 19 on the left is in a compressed state. The push block 23 presses against the cylindrical block 22, the sealing ring 20 is sleeved on the conical cylinder 8, and the return spring 21 is in a stretched state. The flue gas enters the spray tank 2 through the air inlet pipe 3, and the liquid inlet pipe 7 is connected to the spray liquid. The spray liquid is sprayed from the diffusion nozzle 6 through the liquid inlet pipe 7 and the liquid guide pipe 5, and sprayed onto the flue gas to separate the solid particles in the flue gas. The filler in the mesh frame 15 can purify the flue gas, and the purified flue gas passes through the exhaust pipe 4. When the old packing needs to be replaced, the machine is stopped first, and then the screw motor 18 is controlled to work. The screw of the screw motor 18 drives the screw 17 to rotate through the pulley group, so that the slider 11 moves to the left, the slider 11 drives the slide plate 13 and the nitrogen spring 19 to move to the left, and the slide plate 13 drives the push block 23 to move to the left. The push block 23 no longer presses against the cylindrical block 22. Under the action of the reset spring 21, the two sealing rings 20 move in a direction close to each other, the sealing ring 20 and the conical cylinder 8 are separated, and the cylindrical block 22 moves into the trapezoidal groove of the push block 23. At the same time, the nitrogen spring 19 on the left returns to its original state, and then the nitrogen spring 19 on the right contacts the contact block 16 on the right. The gas spring 19 pushes the contact block 16 on the right to move to the left, thereby driving the sliding frame 14 to move to the left, and the sliding frame 14 drives the screen frame 15 to move to the left. The screen frame 15 on the right enters the spray tank 2 through the guide frame 12 on the right, and the screen frame 15 on the left is moved out of the spray tank 2 through the guide frame 12 on the left, so that the old filler can be replaced quickly, and there is no need to stop the machine for a long time when replacing the old filler, thereby improving the work efficiency. When the contact block 16 on the right contacts the guide frame 12 on the right, the sliding frame 14, the screen frame 15 and the contact block 16 stop moving to the left. At this time, the screen frame 15 on the right just corresponds to the conical cylinder 8, and the slider 11 and the slide plate 13 continue to move to the left. The nitrogen spring 19 on the side is compressed, and the push block 23 will continue to move to the left. There is a trapezoidal groove on the push block 23, so two inclined surfaces will be formed on the push block 23. The push block 23 pushes the cylindrical block 22 through the inclined surface, and the two cylindrical blocks 22 move away from each other, so that the two sealing rings 20 can move away from each other. The cylindrical block 22 gradually moves out of the trapezoidal groove of the push block 23, and the sealing ring 20 will be sleeved on the conical tube 8 to strengthen the sealing between the screen frame 15 and the conical tube 8. The reset spring 21 is stretched, and an annular inclined surface is provided on the inner side of the sealing ring 20. The inclined surface of the sealing ring 20 is adapted to the outer contour of the conical tube 8, so that the sealing ring 20 can fully fit the conical tube 8.

[0038] Implementation method 2: Based on implementation method 1, refer to Figure 1 and Fig.14, also includes a recovery mechanism, the recovery mechanism includes a recovery box 24, a drainage pipe 25, a water pump 26 and a filtering assembly. The recovery box 24 is connected to the left side of the top of the bottom plate 1, and the drainage pipe 25 is connected to the middle of the bottom of the spray tank 2. The drainage pipe 25 runs through the top of the recovery box 24, and the water pump 26 is connected to the front side of the bottom of the recovery box 24. The lower end of the liquid inlet pipe 7 is connected to the water outlet end of the water pump 26. The filtering assembly is used to filter solid particles in the waste liquid.

[0039] Reference Fig.14 The filtering assembly includes a baffle 27, a filter plate 1 28 and a filter plate 29. The baffle 27 is connected to the middle part of the recovery box 24, the filter plate 1 28 is connected to the upper part of the baffle 27, and the filter plate 29 is connected to the front side of the bottom of the recovery box 24. The liquid inlet pipe 7 passes through the filter plate 29. The baffle 27 and the filter plate 29 divide the recovery box 24 into three spaces. The rear side of the baffle 27 is an unfiltered space. The drain pipe 25 is located in the unfiltered space. The baffle 27 and the filter plate 29 are between the primary filtering space. The primary filtering space is open. The filter plate 29 is "L-shaped". The filter plate 29 and the recovery box 24 form a closed secondary filtering space. The water pump 26 is located in the secondary filtering space.

[0040] When purifying the flue gas, the waste liquid will flow into the unfiltered space through the drain pipe 25. When the liquid level in the unfiltered space is flush with the filter plate 1 28, the waste liquid will flow into the primary filter space through the filter plate 1 28. The filter plate 1 28 can filter the solid particles in the waste liquid. The filter plate 2 29 can also filter the solid particles in the waste liquid to prevent the solid particles from blocking the water pump 26. The filtered waste liquid becomes spray liquid, and the spray liquid flows into the secondary filter space. The water pump 26 sucks the spray liquid into the liquid inlet pipe 7, and the spray liquid is sprayed from the diffusion nozzle 6 through the liquid guide pipe 5, so that the waste liquid can be recycled and resources can be saved. The agent can also be added to the recovery box 24 and mixed into the spray liquid to improve the purification effect of the spray liquid. The baffle 27 can block the agent to prevent the agent from flowing into the back side of the baffle 27.

[0041] Reference Fig.15 , and also includes a collecting mechanism, which includes a collecting box 30 and a wastewater pipe 31. The left and right sides of the lower part of the spray tank 2 are connected to the collecting boxes 30, and the middle of the bottom of the collecting box 30 is connected to the wastewater pipe 31.

[0042] When the mesh frame 15 is removed from the spray tank 2, some waste liquid will remain in the mesh frame 15. The waste liquid in the mesh frame 15 will drip into the collecting box 30, and the waste liquid in the collecting box 30 will be discharged through the waste water pipe 31. The waste water pipe 31 can be connected to an external discharge pipe, and the waste water is discharged into the recovery box 24 through the discharge pipe to prevent the waste liquid from dripping onto the bottom plate 1.

[0043] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A flue gas purification device in a modified asphalt production process, comprising a base plate (1), a spray tank (2), an air inlet pipe (3) and an exhaust pipe (4), wherein the top of the base plate (1) is connected to the spray tank (2), the lower part of the spray tank (2) is connected to the air inlet pipe (3), and the top of the spray tank (2) is connected to the exhaust pipe (4), wherein: The spray tank (2) also includes a liquid guide tube (5), a diffusion nozzle (6), a liquid inlet tube (7), a conical tube (8), a vertical plate (9), a slide rail (10), a slider (11), a guide frame (12), a slide plate (13), a slide frame (14), a screen frame (15), a moving mechanism and a sealing mechanism. Two liquid guide tubes (5) are connected to the spray tank (2). The bottom of each liquid guide tube (5) is connected to three diffusion nozzles (6). The two liquid guide tubes (5) are connected to the liquid inlet tube (7). A group of conical tubes (8) are connected to the upper and lower sides of the spray tank (2), and each group has two conical tubes (8). The top of the bottom plate (1) is symmetrically connected to the vertical plates (9) on both sides. Two slide rails (10) are connected between the two vertical plates (9) on the front side, and two vertical plates (9) on the rear side are also connected between the two vertical plates (9). A slide rail (10), each of which is slidably connected to a slider (11), a guide frame (12) is symmetrically connected to the left and right sides of the spray tank (2), each of which is connected to a slide plate (13), the slide plate (13) is located in the guide frame (12), each of which is slidably connected to a slide frame (14), the slide frame (14) is located in the guide frame (12), two mesh frames (15) for storing fillers are connected between two front and rear opposite slide frames (14), a moving mechanism is used to move the mesh frame (15), the mesh frame (15) enters the spray tank (2) through the guide frame (12), and the mesh frame (15) moves between two conical cylinders (8) in the same group, and a sealing mechanism is used to strengthen the sealing between the mesh frame (15) and the conical cylinder (8); The moving mechanism comprises a contact block (16), a screw (17), a screw motor (18) and a nitrogen spring (19). The left and right sides of the sliding frame (14) are connected with the contact block (16). The rear side slide rail (10) is rotatably connected with the screw (17). The screw (17) and the rear side slider (11) are connected by threads. The front side slide rail (10) is installed with a screw motor (18). The screw of the screw motor (18) and the front side slider (11) are connected by threads. The screw of the screw motor (18) and the screw (17) are driven by a pulley group. The bottom of the slider (11) is connected with two nitrogen springs (19). The right side contact block (16) is located between the two nitrogen springs (19). The nitrogen spring (19) is used to push the sliding frame (14) to move leftward. The sliding frame (14) drives the screen frame (15) to move leftward, and moves the screen frame (15) to between two conical cylinders (8) in the same group. The sealing mechanism comprises a sealing ring (20), a return spring (21) and a sleeve assembly. The sealing rings (20) are slidably connected to the upper and lower sides of the screen frame (15). The return springs (21) are evenly spaced and connected between the sealing ring (20) and the screen frame (15). The sleeve assembly is used to sleeve the sealing ring (20) onto the conical cylinder (8) to enhance the sealing performance between the screen frame (15) and the conical cylinder (8). The inserting assembly comprises a cylindrical block (22) and a push block (23). The cylindrical blocks (22) are connected to the front and rear sides of the sealing ring (20). The push blocks (23) are symmetrically connected to the upper and lower sides of the slide plate (13). The push blocks (23) are used to push the cylindrical block (22) so that the sealing ring (20) is sleeved onto the conical tube (8). The push blocks (23) are provided with trapezoidal grooves. When the cylindrical block (22) moves into the trapezoidal grooves, the sealing ring (20) is reset and separated from the conical tube (8).

2. A flue gas purification device in a modified asphalt production process according to claim 1, characterized in that: The invention also comprises a recovery mechanism, which comprises a recovery box (24), a drainage pipe (25), a water pump (26) and a filter assembly. The top of the bottom plate (1) is connected to the recovery box (24). The bottom of the spray tank (2) is connected to the drainage pipe (25). The drainage pipe (25) runs through the top of the recovery box (24). Wastewater flows into the recovery box (24) through the drainage pipe (25). The recovery box (24) is connected to the water pump (26). The lower end of the liquid inlet pipe (7) is connected to the water outlet end of the water pump (26). The filter assembly is used to filter solid particles in the wastewater.

3. A flue gas purification device in a modified asphalt production process according to claim 2, characterized in that: The filter assembly comprises a baffle (27), a filter plate 1 (28) and a filter plate 2 (29). The baffle (27) is connected to the recovery box (24). The filter plate 1 (28) is connected to the baffle (27). Wastewater flows through the filter plate 1 (28) to the front side of the baffle (27). The filter plate 1 (28) can filter solid particles in the wastewater. The recovery box (24) is connected to the filter plate 2 (29) for filtering solid particles in the wastewater. The liquid inlet pipe (7) passes through the filter plate 2 (29). 9), the baffle (27) and the second filter plate (29) divide the recovery box (24) into three spaces, the rear side of the baffle (27) is an unfiltered space, the drain pipe (25) is located in the unfiltered space, the space between the baffle (27) and the second filter plate (29) is a primary filter space, the primary filter space is open, the second filter plate (29) is "L-shaped", the second filter plate (29) and the recovery box (24) form a closed secondary filter space, and the water pump (26) is located in the secondary filter space.

4. A flue gas purification device in a modified asphalt production process according to claim 1, characterized in that: The spray tank (2) further comprises a collecting mechanism, which comprises a collecting box (30) and a wastewater pipe (31). The left and right sides of the spray tank (2) are both connected to the collecting box (30). Wastewater dripping from the net frame (15) falls into the collecting box (30). The bottom middle of the collecting box (30) is connected to the wastewater pipe (31).

5. A flue gas purification device in a modified asphalt production process according to claim 1, characterized in that: An annular inclined surface is provided on the inner side of the sealing ring (20), and the inclined surface is adapted to the outer contour of the conical cylinder (8).

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