Asphalt waste gas oil smoke dust purification device

Abstract

The invention relates to the technical field of waste gas treatment, in particular to an asphalt waste gas oil smoke dust purification device. Comprising a rack, two bearing seats and a shell are arranged on the rack, a rotating shaft is arranged between the two bearing seats, a rotating drum is arranged in the shell, a rotating motor is arranged at the end of the rack, the output end of the rotating motor is connected with one end of the rotating shaft through a coupler, and an air inlet pipeline and an air outlet pipeline are arranged on the shell. A water inlet pipe is arranged at the end, close to the air inlet pipeline, of the shell, the tail end of the water inlet pipe is located in the rotary drum, and a pollution discharge mechanism is arranged at the bottom of the shell. Spraying opposite to the gas flow direction is adopted in the device, and mass transfer in the gas-liquid contact process is enhanced. Compared with the prior art, the device has excellent micromixing and transfer strengthening performance, so that the size of the purification device is greatly reduced, the investment cost is reduced, and the device also has the advantages of low flooding point, easiness in startup and shutdown, convenience in maintenance and repair and the like. And a good separation effect is achieved on gaseous, liquid, solid and even two-phase or three-phase mixtures.

Description

Technical Field

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

[0002] In the process of industrial waste gas treatment, it is necessary to remove the particles, oil mist and other substances contained. The general treatment methods include physical filtration, cyclone separation, electrostatic capture, water spray absorption and other methods. In the treatment of dusty gas. However, when there are particles, physical filtration and oil removal can easily cause filter blockage, and the filter needs to be frequently cleaned or replaced; the cyclone separation effect is poor; the investment cost of electrostatic capture is generally high, and in order to achieve a better capture effect, it is also necessary to control parameters such as the temperature of the exhaust gas, which is not suitable for some working conditions, and there is also the risk of discharge and fire. Therefore, in practical applications, water spray absorption is more widely used. When the gas passes through the spray tower, the entrained particles, oil mist or aerosol-like substances are intercepted by water to form floating substances on the surface of the water. In order to enhance the contact effect between water and gas, the tower body needs to be made relatively larger to reduce the wind speed, and fill the spray tower with fillers to increase the contact area. In this way, there is a risk of large floor space and tower blockage. If the viscosity of the spray water is reduced to prevent tower blockage, a large amount of sewage will be generated, forming secondary pollution.

[0003] Therefore, there is an urgent need to develop an asphalt waste gas oil fume purification device to improve the treatment efficiency of industrial waste gas, reduce maintenance frequency, reduce equipment footprint and avoid secondary pollution. Summary of the invention

[0004] The purpose of the present invention is to provide an asphalt waste gas oil fume purification device to solve the major defects of the waste gas treatment equipment in the prior art, such as physical filtration requiring frequent maintenance, electrostatic capture being costly and prone to fire, and water spray absorption equipment being large in size and easy to clog and cause secondary pollution.

[0005] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: The cam is an air-conditioner of the embodiment of the present invention and is provided with a gear train coupled to the drive mechanism, and the gear train coupled to the drive mechanism comprises a gear train coupled to the drive mechanism, and the gear train coupled to the drive mechanism comprises a gear train coupled to the drive mechanism.

[0006] Furthermore, a circulating water tank and a circulating water pump are provided on the frame, the water inlet pipe is connected to the circulating water tank through the circulating water pump, two circulating water pumps are provided, and the two circulating water pumps are used alternately, the water inlet end of each circulating water pump is connected to the circulating water tank through a pipeline, and the water outlet end of each circulating water pump is connected to the water inlet pipe through a pipeline.

[0007] Furthermore, the sewage discharge mechanism includes an auger, a sewage pipe, a drain pipe, a storage box and a filter screen, the sewage pipe is arranged at the end of the lower part of the shell, the auger is horizontally arranged at the bottom of the shell and the end of the auger extends into the sewage pipe, the storage box is arranged at the end of the sewage pipe, and the lower part of the end of the sewage pipe is provided with a connecting port connected to the storage box, a filter screen is provided in the sewage pipe, and the end of the auger is located in the filter screen, a drain pipe is provided between the sewage pipe and the circulating water tank, the upper end of the drain pipe is connected to the gap between the sewage pipe and the filter screen, and the lower end of the drain pipe is connected to the circulating water tank.

[0008] Furthermore, a baffle is provided at the connection port, the upper end of the baffle is connected to the sewage pipe through a connecting shaft, and the end of the connecting shaft is provided with a torsion spring for providing a rotational force so that the baffle closes the connection port.

[0009] Furthermore, there are multiple water inlet pipes, which are evenly distributed, and nozzles are provided at the ends of all water inlet pipes, and all nozzles are inclined toward the inner wall of the drum.

[0010] Furthermore, the side wall of the drum is composed of at least two layers of wire mesh, and a filling gap is provided between two adjacent layers of wire mesh.

[0011] Furthermore, the air inlet duct is arranged along the tangent direction of the shell, a defogger is installed on the air outlet duct, and a first inspection door is designed on the defogger.

[0012] Furthermore, the outer shell is provided with a second inspection door for inspecting the interior.

[0013] Furthermore, the outer diameter of the rotating drum gradually increases from the air inlet duct to the air outlet duct.

[0014] Furthermore, sealing rings are provided at both ends of the inner part of the shell, and one side of the sealing ring is close to the end of the rotating drum.

[0015] Furthermore, the outer shell includes a shell with circular openings at both ends and two end covers, the shell is fixed to the upper end of the frame, the two end covers are also fixed to the upper end of the frame, and the two end covers are respectively located at the two openings of the shell, and an annular hole is formed between the end cover and the corresponding opening, an annular connecting block is installed in the annular hole, a sealing ring is provided on one side of the annular connecting block, and one side of the sealing ring is close to the end of the drum.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention takes the purification device as the core, and adopts spraying in the opposite direction of the airflow inside to strengthen the mass transfer in the gas-liquid contact process. It has excellent micro-mixing and transfer enhancement performance, thus greatly reducing the size of the purification device and reducing the investment cost. It also has the advantages of low liquid flooding point, easy start-up and shutdown, and convenient maintenance and overhaul. It has a good separation effect for gas, liquid, solid and even two-phase or three-phase mixtures.

[0017] The present invention, through the arrangement of the sewage discharge mechanism, firstly, realizes the rapid discharge of the mixed liquid containing impurities after the waste gas treatment, avoiding the formation of water and sewage accumulation inside; secondly, it can also realize the separation of solid and liquid, which is convenient for the recycling of the spray liquid on the one hand, and also convenient for the subsequent treatment of the waste on the other hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] Figure 1 The three-dimensional structure of the first embodiment of the present invention is shown in FIG. Figure 1 ; Figure 2 The three-dimensional structure of the first embodiment of the present invention is shown in FIG. Figure 2 ; Figure 3 A top view of the first embodiment of the present invention; Figure 4 for Figure 3 Section view along line AA; Figure 5 for Figure 4 The enlarged view of point B in the middle; Figure 6 for Figure 4 Enlarged view of point C in the middle; Figure 7 is a cross-sectional view of the housing and the drum in Embodiment 1 of the present invention; Figure 8 is a cross-sectional view of the side wall of the drum in the first embodiment of the present invention; Fig. 9 is a cross-sectional view of Example 2 of the present invention; Fig.10 for Fig. 9 Enlarged view of point D in the middle.

[0020] Figure numerals: 1. frame; 2. bearing seat; 3. casing; 4. rotating shaft; 5. drum; 6. connecting piece; 7. rotating motor; 8. air inlet duct; 9. air outlet duct; 10. water inlet pipe; 11. sewage discharge mechanism; 111. auger; 112. sewage discharge pipe; 113. drain pipe; 114. storage box; 115. filter screen; 12. circulating water tank; 13. circulating water pump; 14. nozzle; 15. filling gap; 16. defogger; 17. first inspection door; 18. second inspection door; 19. sealing ring; 20. casing; 21. end cover; 22. annular connecting block; 23. baffle. DETAILED DESCRIPTION

[0021] 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.

[0022] The following first describes the concepts involved in the present application in conjunction with the accompanying drawings. It should be noted that the following description of each concept is only to make the content of the present application easier to understand, and does not limit the scope of protection of the present application; at the same time, the embodiments and features in the embodiments of the present application can be combined with each other in the absence of conflict. The present application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0023] Embodiment 1

[0024] like Figure 1-Figure 8 As shown, the present invention provides an asphalt waste gas oil fume purification device, including a frame 1, the frame 1 is mainly used to support and fix the purification device, and the purification device and the frame 1 can be fixedly connected by bolts; Two bearing seats 2 and a housing 3 arranged between the two bearing seats 2 are fixedly arranged on the frame 1. A rotating shaft 4 is arranged between the two bearing seats 2. Both ends of the rotating shaft 4 are rotatably connected with the two bearing seats 2 through bearings, and the middle of the rotating shaft 4 passes through the housing 3. The bearing seats 2 are used to fix the rotating shaft 4 while ensuring the rotatability of the rotating shaft 4. A rotating drum 5 with openings at both ends is arranged in the housing 3. The side wall of the rotating drum 5 is in a mesh shape. The rotating drum 5 is coaxially arranged with the rotating shaft 4, and the two are fixedly connected to form a whole through a connecting piece 6, so that the rotating drum 5 can rotate at high speed along with the rotating shaft 4. At the same time, the inner diameter of the housing 3 is larger than the outer diameter of the rotating drum 5, so that the airflow forms an airflow distribution area between the housing 3 and the rotating drum 5, and the airflow is ensured to pass through the rotating drum 5 evenly. A rotating motor 7 is provided at the end of the frame 1. The output end of the rotating motor 7 is connected to one end of the rotating shaft 4 through a coupling. After the motor is powered on, the rotating drum 5 is driven to rotate at high speed through the rotating shaft 4. The motor can also adopt frequency conversion control to adjust the rotation speed of the rotor. An air inlet duct 8 and an air outlet duct 9 are provided on the outer shell 3. The air outlet duct 9 is arranged at the end of the outer shell 3 and is connected with the interior of the rotating drum 5. The air inlet duct 8 is connected with the interior of the outer shell 3. A water inlet pipe 10 is provided at one end of the outer shell 3 close to the air inlet duct 8. The end of the water inlet pipe 10 is located in the rotating drum 5. A sewage discharge mechanism 11 is provided at the bottom of the outer shell 3.

[0025] The present invention utilizes the strong centrifugal force field (usually 10 to 1000 times the acceleration of gravity) generated by the rotation of the drum 5 to simulate the hypergravity field. When the purification device is in operation, the liquid is transported from the water inlet pipe 10 into the drum 5 and sprayed on the inner wall of the drum 5. The liquid is sheared and broken into fine droplets, liquid films and liquid filaments by the high-speed rotating drum 5. The sheared and broken liquid contacts the gas flowing into the drum 5 after passing through the side wall of the drum 5 in the mesh of the side wall of the drum 5, completing the gas-liquid two-phase mass transfer enhancement process. Compared with traditional physical filtration, cyclone separation, electrostatic capture, water spray absorption and other methods, the present invention is not easy to be blocked, reduces the maintenance frequency of the drum 5, and the removal rate of impurities in the exhaust gas is higher than that of the cyclone separation method, and the cost is lower than that of electrostatic capture. There are no safety hazards such as fire, and there are no negative effects such as large area occupied by water spray absorption equipment. It has excellent micro-mixing and transfer enhancement performance, which greatly reduces the size of the purification device and reduces the investment cost. It also has the advantages of low flooding point, easy start-up and shutdown, and convenient maintenance and overhaul. It has a good separation effect for gas, liquid, solid and even two-phase or three-phase mixtures.

[0026] Specifically, a circulating water tank 12 and a circulating water pump 13 are provided on the frame 1, and the water inlet pipe 10 is connected to the circulating water tank 12 through the circulating water pump 13. The circulating water tank 12 may be equipped with an inspection cover, a water inlet, a drain, an overflow, a circulating water outlet, a dosing port, and other necessary pipe openings as required. The circulating water tank 12 may also be equipped with a liquid level meter, a thermometer, a pH meter, a liquid level meter, an ORP meter, and other necessary instruments as required; the liquid in the circulating water tank 12 may be water, or other agents may be added.

[0027] Specifically, two circulating water pumps 13 are provided, and the two circulating water pumps 13 are used alternately. The water inlet end of each circulating water pump 13 is connected to the circulating water tank 12 through a pipeline, and the water outlet end of each circulating water pump 13 is connected to the water inlet pipe 10 through a pipeline. The water pump can be a horizontal centrifugal pump, a vertical centrifugal pump, an in-tank pump, an out-tank pump, and other pumps. A filter device is installed at the water pump inlet to prevent the water pump from being blocked.

[0028] The spray liquid will pass through the drum 5 and carry the impurities to gather at the bottom of the shell 3. In order to speed up the discharge of the spray liquid containing impurities and realize the recycling of the spray liquid, the sewage discharge mechanism 11 includes an auger 111, a sewage pipe 112, a drain pipe 113, a storage box 114 and a filter 115. The sewage pipe 112 is arranged at the end of the lower part of the shell 3, the auger 111 is horizontally arranged at the bottom of the shell 3 and the end of the auger 111 extends into the sewage pipe 112, the storage box 114 is arranged at the end of the sewage pipe 112, and the lower part of the end of the sewage pipe 112 is provided with a connecting port communicating with the storage box 114, a filter 115 is arranged in the sewage pipe 112, and the end of the auger 111 is located in the filter 115. A drain pipe 113 is arranged between the sewage pipe 112 and the circulating water tank 12, the upper end of the drain pipe 113 is communicated with the gap between the sewage pipe 112 and the filter 115, and the lower end of the drain pipe 113 is communicated with the circulating water tank 12. When working, Figure 4 As shown, when the spray liquid containing impurities gathers at the bottom of the shell 3, the auger 111 works to drive the mixed liquid to move to the sewage pipe 112. When the mixed liquid enters the sewage pipe 112, the spray liquid will pass through the filter 115 into the drain pipe 113 and merge into the circulating water tank 12, thereby filtering out the solid impurities in the spray liquid, increasing the number of recycling times of the spray liquid, and achieving the effect of energy saving and cost reduction. Under the action of the auger 111, the solid impurities further enter the storage box 114 through the connecting port for storage. Through the action of the sewage discharge mechanism 11, firstly, the mixed liquid containing impurities after the exhaust gas treatment is quickly discharged to avoid the formation of water accumulation and pollution inside; secondly, the separation of solid and liquid can also be achieved, which is convenient for the recycling of the spray liquid on the one hand, and also convenient for the subsequent treatment of waste on the other hand.

[0029] Specifically, a baffle 23 is provided at the connection port, the upper end of the baffle 23 is connected to the sewage pipe 112 through a connecting shaft, and a torsion spring is provided at the end of the connecting shaft for providing a rotational force so that the baffle 23 closes the connection port. If the connection port is open, under the action of the auger 111, not only will the solid impurities be transported to the storage box 114, but also part of the spray liquid will enter the storage box 114. In order to maximize the separation of solid impurities and spray liquid, a baffle 23 is set at the connection port, and a torsion spring is set to provide the baffle 23 with a force to close the connection port. In this way, the solid impurities transported by the auger 111 will not enter the storage box 114 at the first time, but will first conflict with the baffle 23. When the impurities transported by the auger 111 increase, the impurities will gradually squeeze the baffle 23. During the squeezing process, the spray liquid in the impurities can be squeezed out as much as possible and pass through the filter 115 into the circulating water tank. When the squeezing force of the impurities on the baffle 23 exceeds the force provided by the torsion spring, the baffle 23 will be pushed open and fall into the storage box 114 under the action of gravity.

[0030] Specifically, a plurality of water inlet pipes 10 are provided, and the plurality of water inlet pipes 10 are evenly distributed, and nozzles 14 are provided at the ends of all water inlet pipes 10, and all nozzles 14 are inclined toward the inner wall of the drum 5. The nozzles 14 can extend into the drum 5 to achieve countercurrent enhanced mass transfer. In addition, the nozzles 14 can also extend into the airflow distribution layer between the drum 5 and the housing 3 to facilitate the setting of the structure; however, the effect will be much worse than that of the nozzles 14 extending into the drum 5.

[0031] Specifically, the side wall of the drum 5 is composed of at least two layers of wire mesh, and a filling gap 15 is provided between two adjacent layers of wire mesh. Fillers can be filled in the filling gap 15. Simple wire mesh filtration cannot remove impurities in the exhaust gas very well. Therefore, filling the filling gap 15 with different fillers, such as activated carbon, can better remove impurities in the exhaust gas. In addition, targeted fillers can be filled for specific impurities in the exhaust gas, which can make the present invention more applicable.

[0032] Specifically, the air inlet duct 8 is arranged along the tangent direction of the outer shell 3. The air inlet duct 8 may not be arranged along the tangent direction of the outer shell 3, but the distribution of the exhaust gas entering between the outer shell 3 and the drum 5 will be uneven, and a guide plate needs to be arranged to evenly distribute the exhaust gas. The air inlet duct 8 is arranged along the tangent direction of the outer shell 3 to ensure the uniform distribution of the exhaust gas entering between the outer shell 3 and the drum 5, and there is no need to arrange a guide plate to evenly distribute the exhaust gas. In the present application, the air inlet duct 8 is shown as being arranged horizontally in the drawings, but it can actually be arranged vertically, horizontally or inclined according to actual needs.

[0033] A defogger 16 is installed on the air outlet duct 9, and the defogger 16 can remove liquid foam entrained from the equipment by the airflow; and a first inspection door 17 is designed on the defogger 16, and the first inspection door 17 can be opened when necessary to clean, maintain or replace the filler in the defogger 16.

[0034] Specifically, the housing 3 is provided with a second inspection door 18 for inspecting the interior. A plurality of second inspection doors 18 may be provided, and the second inspection door 18 is fixed to the cylindrical portion of the rotating bed housing 20 by bolts. The inspection door 18 may be disassembled when necessary to inspect and maintain the rotating drum 5. A portion of the second inspection door 18 may be made of a transparent material, so that the operating status of the interior of the equipment can be observed.

[0035] Specifically, sealing rings 19 are provided at both ends of the housing 3, and one side of the sealing ring 19 is attached to the end of the drum 5. The sealing rings 19 are used as contact seals between the two ends of the drum 5 and the rotating bed shell 20. The sealing rings 19 are fixed in the housing 3 and maintain a very small gap with the drum 5, so that the drum 5 and the shell 20 can move relative to each other without air leakage (because of the contact seal, even if there is air leakage due to the very small gap between the sealing ring 19 and the drum 5, it is very slight. Compared with the benefits brought by the present invention over the prior art, this air leakage defect is completely acceptable).

[0036] Specifically, the outer diameter of the drum 5 gradually increases from the air inlet duct 8 to the air outlet duct 9. It should be noted that the increase in the outer diameter of the drum 5 does not mean that the thickness of the side wall of the drum 5 is also continuously thickened, and it can be set according to actual conditions. The purpose of this setting is that since the nozzle 14 is only set at one end of the drum 5, the end of the drum 5 close to the nozzle 14 is sprayed with more spray liquid. Therefore, the outer diameter of the drum 5 is set to gradually increase, so that when the spray liquid passes through the side wall of the drum 5, under the action of the centrifugal force provided by the rotation of the drum 5 and the ductility of the liquid, the spray liquid will inevitably move toward the end of the drum 5, which is conducive to the formation of a water film on the side wall of the drum 5 away from the nozzle 14. In this way, the contact effect between the exhaust gas and the spray liquid is guaranteed.

[0037] Working principle: Before the present invention works, the device is turned on first, that is, the liquid level of the circulating water tank 12 reaches the design requirement. The circulating water pump 13 is turned on normally, and the water circulation is normal. The motor starts normally, and the speed reaches the design requirement.

[0038] After that, the produced waste gas is collected into a pipeline, and the waste gas is transported from the air intake pipeline to the air flow distribution layer between the outer shell 3 and the drum 5 through an induced draft fan or a blower. Then it passes through the drum 5 evenly from the outside to the inside. The circulating water is sprayed from the inside of the drum 5 to the inside of the drum wall through a pipeline. The liquid is sheared and broken into fine droplets, liquid films and liquid filaments by the high-speed rotating drum 5, and contacts with the gas from the outside of the drum 5 and flowing into the inside of the drum 5 in porous media such as the internal filler in the filling gap 15 on the side wall of the drum 5, completing the gas-liquid two-phase mass transfer enhancement process. Particles, oil mist or other gaseous substances mixed in the gas are adsorbed and absorbed by the droplets, liquid films and liquid filaments, and separated to the inner wall of the outer shell 3 under the action of the centrifugal force of the drum 5. After converging at the bottom of the outer shell 3, they flow to the water tank. After filtering and removing impurities in the water tank, they are sent to the nozzle 14 for atomization spraying by the circulating water pump 13 to achieve recycling; After being purified on the drum 5, the gas enters the inner cavity of the drum 5 and is discharged through the air outlet duct 9. Since a small amount of liquid droplets may be entrained in the gas, a demisting device 16 is installed on the air outlet duct 9 to reduce the entrainment of liquid foam in the gas.

[0039] Through the above steps, particulate matter, oil mist and some soluble gaseous pollutants in the gas can be removed to achieve gas purification.

[0040] Embodiment 2

[0041] like Fig. 9 and Fig.10 As shown, the housing 3 includes a housing 20 with circular openings at both ends and two end covers 21. The housing 20 is fixed to the upper end of the frame 1, and the two end covers 21 are fixed to the upper end of the frame 1. The two end covers 21 are respectively located at the two openings of the housing 20, and an annular hole is formed between the end covers 21 and the corresponding openings. An annular connecting block 22 is installed in the annular hole. A sealing ring 19 is provided on one side of the annular connecting block 22, and one side of the sealing ring 19 is attached to the end of the drum 5. The annular connecting block 22 and the sealing ring 19 are composed of multiple parts, rather than an integral ring, and the integral ring is not convenient for installation. Compared with the first embodiment, the second embodiment has the advantage of being easy to replace the sealing ring 19. In the first embodiment, the sealing ring is installed inside the housing 3, one side is fixedly connected to the housing 3, and the other side is attached to the drum 5. Therefore, even if the second inspection door 18 is provided on the housing 3, it is still not convenient to replace it in such a small space. In the second embodiment, the annular connecting block 22 and the multiple parts of the sealing ring 19 are directly combined together at the end of the housing 3 to form a complete ring, and then installed in the annular hole, which is easy to operate.

[0042] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present invention, and are not intended to impose any form of limitation on the implementation methods of the technology of the present invention. Any technical personnel in this field may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as technologies or embodiments that are essentially the same as the present invention.

[0043] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the invention to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. An asphalt waste gas oil fume purification device, comprising a frame (1), characterized in that: The frame (1) is fixedly provided with two bearing seats (2) and a housing (3) arranged between the two bearing seats (2); a rotating shaft (4) is arranged between the two bearing seats (2); two ends of the rotating shaft (4) are rotatably connected to the two bearing seats (2) via bearings, and the middle of the rotating shaft (4) passes through the housing (3); a rotating drum (5) with openings at both ends is arranged in the housing (3); the side wall of the rotating drum (5) is in a mesh shape; the rotating drum (5) is coaxially arranged with the rotating shaft (4), and the two are fixedly connected via a connecting piece (6); a rotating shaft (4) is arranged at the end of the frame (1); A rotating motor (7), wherein the output end of the rotating motor (7) is connected to one end of a rotating shaft (4) via a coupling; an air inlet duct (8) and an air outlet duct (9) are provided on the housing (3); the air outlet duct (9) is arranged at the end of the housing (3), and the air outlet duct (9) is communicated with the interior of the rotating drum (5); the air inlet duct (8) is communicated with the interior of the housing (3); an inlet pipe (10) is provided at one end of the housing (3) close to the inlet pipe (8); the end of the inlet pipe (10) is located in the rotating drum (5); and a sewage discharge mechanism (11) is provided at the bottom of the housing (3).

2. The asphalt waste gas oil fume purification device according to claim 1 is characterized by: A circulating water tank (12) and a circulating water pump (13) are provided on the frame (1); the water inlet pipe (10) is connected to the circulating water tank (12) via the circulating water pump (13); two circulating water pumps (13) are provided, and the two circulating water pumps (13) are used alternately; the water inlet end of each circulating water pump (13) is connected to the circulating water tank (12) via a pipeline, and the water outlet end of each circulating water pump (13) is connected to the water inlet pipe (10) via a pipeline.

3. The asphalt waste gas oil fume purification device according to claim 2 is characterized by: The sewage discharge mechanism (11) comprises an auger (111), a sewage discharge pipe (112), a drain pipe (113), a storage box (114) and a filter screen (115); the sewage discharge pipe (112) is arranged at the end of the lower part of the housing (3); the auger (111) is arranged horizontally at the bottom of the housing (3) and the end of the auger (111) extends into the sewage discharge pipe (112); the storage box (114) is arranged at the end of the sewage discharge pipe (112); A connection port communicating with a storage box (114) is provided at the lower part of the end thereof, a filter screen (115) is provided in the sewage pipe (112), the end of the auger (111) is located in the filter screen (115), a drainage pipe (113) is provided between the sewage pipe (112) and the circulating water tank (12), the upper end of the drainage pipe (113) is communicated with the gap between the sewage pipe (112) and the filter screen (115), and the lower end of the drainage pipe (113) is communicated with the circulating water tank (12).

4. The asphalt waste gas oil fume purification device according to claim 3 is characterized by: A baffle (23) is provided at the connection port, the upper end of the baffle (23) is connected to the sewage pipe (112) via a connection shaft, and the end of the connection shaft is provided with a torsion spring for providing a rotational force so that the baffle (23) closes the connection port.

5. The asphalt waste gas oil fume purification device according to claim 1, characterized in that: A plurality of water inlet pipes (10) are provided, the plurality of water inlet pipes (10) are evenly distributed, and nozzles (14) are provided at the ends of all water inlet pipes (10), and all nozzles (14) are inclined toward the inner wall of the rotating drum (5).

6. The asphalt waste gas oil fume purification device according to claim 1, characterized in that: The side wall of the rotating drum (5) is composed of at least two layers of wire mesh, and a filling gap (15) is provided between two adjacent layers of wire mesh.

7. The asphalt waste gas oil fume purification device according to claim 1 is characterized by: The air inlet duct (8) is arranged along the tangent direction of the outer shell (3), the air outlet duct (9) is installed with a demisting device (16), and the demisting device (16) is designed with a first inspection door (17), and the outer shell (3) is provided with a second inspection door (18) for inspecting the interior.

8. The asphalt waste gas oil fume purification device according to claim 1, characterized in that: The outer diameter of the rotating drum (5) gradually increases from the air inlet duct (8) to the air outlet duct (9).

9. The asphalt waste gas oil fume purification device according to claim 1, characterized in that: Sealing rings (19) are provided at both ends of the interior of the housing (3), and one side of the sealing ring (19) is in contact with the end of the rotating drum (5).

10. The asphalt waste gas oil fume purification device according to claim 1, characterized in that: The housing (3) comprises a shell (20) having circular openings at both ends and two end covers (21). The shell (20) is fixed to the upper end of the frame (1). The two end covers (21) are fixed to the upper end of the frame (1). The two end covers (21) are respectively located at the two circular openings of the shell (20). An annular hole is formed between the end covers (21) and the corresponding circular openings. An annular connecting block (22) is installed in the annular hole. A sealing ring (19) is provided on one side of the annular connecting block (22). One side of the sealing ring (19) is in contact with the end of the drum (5).

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