A tail gas recovery device for waste mineral oil recovery treatment

Abstract

The application relates to the tail gas recovery filtering technical field and particularly relates to a tail gas recovery device for waste mineral oil recovery treatment, which comprises an efficient activated carbon working platform, an efficient activated carbon filtering tank body fixedly installed on the efficient activated carbon working platform, a waste oil recovery frame fixedly connected to the bottom of the efficient activated carbon filtering tank body, an inner wall of the waste oil recovery frame is fixedly connected with a tail gas inlet pipeline, an inner wall of the tail gas inlet pipeline is fixedly connected with a first fixed plate, when the activated carbon storage net frame rotates, a plurality of second guide rods move along the circumference, the upward movement of the second guide rods is synchronous with the upward movement of the poking plates, when the interference is removed, the downward movement of the first reset spring is synchronous with the downward movement of the second guide rods and the poking plates, the intermittent upward and downward movement of the plurality of poking plates stirs the efficient activated carbon particles stored at the bottom of the activated carbon storage net frame, the upward and downward stirring can stir the activated carbon close to the lower part upward, and the activated carbon particles move upward and downward alternately.

Description

Technical Field

[0001] This invention relates to the field of exhaust gas recovery and filtration technology, specifically to an exhaust gas recovery device for waste mineral oil recovery and treatment. Background Technology

[0002] Waste mineral oil recycling and regeneration production lines usually require exhaust gas purification equipment to treat oily waste gas, volatile organic compounds, oil mist and odors generated during the regeneration process. The core treatment method is to use a high-efficiency activated carbon filter for adsorption purification, so that the exhaust gas can meet emission standards.

[0003] Currently, existing waste mineral oil recycling and treatment tail gas recovery devices require workers to periodically replace activated carbon through the maintenance door of the purification device. Because the amount of activated carbon used in the purification device is large, and the activated carbon used is usually a uniform porous activated carbon ball, these activated carbon balls are stacked together. Since the tail gas is usually transported from the bottom of the device upwards, the utilization rate of the activated carbon at the top is lower than that at the bottom. On the other hand, the exhaust angle of the tail gas inlet at the bottom of the device is usually a fixed angle, which means that the tail gas usually acts more concentratedly on the activated carbon near the jet direction after entering the device, while the activated carbon in other directions often has uneven effects. Summary of the Invention

[0004] The purpose of this invention is to provide a tail gas recovery device for waste mineral oil recycling and treatment, in order to solve the problems mentioned in the background art, such as the activated carbon balls being stacked together, the tail gas usually being transported from the bottom of the device upwards, resulting in the utilization rate of the activated carbon at the top being lower than that at the bottom, and the tail gas usually acting more concentratedly on the activated carbon near the jet direction after entering the device, while the activated carbon in other directions often has uneven effects.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a waste mineral oil recycling device, comprising a high-efficiency activated carbon working platform and a high-efficiency activated carbon filter tank fixedly installed on the high-efficiency activated carbon working platform. A waste oil recycling frame is fixedly connected to the bottom of the high-efficiency activated carbon filter tank. A tail gas inlet pipe is fixedly connected to the inner wall of the waste oil recycling frame. A first fixing plate is fixedly connected to the inner wall of the tail gas inlet pipe. A first vortex fan is rotatably installed on the outer wall of the first fixing plate. A second fixing plate is fixedly connected to the end of the first vortex fan. An outlet pipe is fixedly sleeved on the outer wall of the second fixing plate. The outlet pipe is rotatably installed at the end of the tail gas inlet pipe. A third fixing plate is fixedly connected to the inner wall of the outlet pipe. A second vortex fan is rotatably installed on the outer wall of the third fixing plate. A first abutment block is fixedly connected to the outer wall of the second vortex fan. A guide cover is hinged to the end of the outlet pipe.

[0006] Preferably, a first guide rod is fixedly connected to the outer wall of the air guide cover, a first ball is rotatably mounted on one end of the first guide rod, and a first abutting slope is provided on the outer wall of the first abutting block, and the first ball slides in contact with the surface of the first abutting slope.

[0007] Preferably, a first fixing frame is fixedly connected to the end of the air outlet pipe, a rotating rod is rotatably installed on the inner wall of the first fixing frame, a rotating block is fixedly connected to the outer wall of the rotating rod, the outer wall of the rotating block is fixedly connected to the outer wall of the air guide cover, a torsion spring is sleeved on the rotating rod, one end of the torsion spring is fixedly connected to the inner wall of the first fixing frame, and the other end of the torsion spring is fixedly connected to the outer wall of the rotating block.

[0008] Preferably, a motor bracket is fixedly connected to the top of the high-efficiency activated carbon filter tank, a drive motor is fixedly installed on the outer wall of the motor bracket, a drive shaft is fixedly connected to the output end of the drive motor, a stabilizing shaft is rotatably installed on the outer wall of the drive shaft, and the stabilizing shaft is rotatably installed on the inner wall of the motor bracket.

[0009] Preferably, an activated carbon storage mesh frame is fixedly installed at the end of the drive shaft. The activated carbon storage mesh frame is a metal mesh frame. Multiple second guide rods are slidably installed on the inner wall of the activated carbon storage mesh frame, and a toggle plate is fixedly connected to the outer wall of the second guide rods.

[0010] Preferably, a fixing plate is fixedly connected to the outer wall of the second guide rod, and a first return spring is sleeved on the second guide rod. One end of the first return spring is fixedly connected to the outer wall of the fixing plate, and the other end of the first return spring is fixedly connected to the outer wall of the activated carbon storage mesh frame.

[0011] Preferably, a second ball bearing is rotatably mounted on one end of the second guide rod, and a plurality of annularly distributed second abutment blocks are fixedly connected to the inner wall of the high-efficiency activated carbon filter tank, with the ends of the second abutment blocks being hemispherical.

[0012] Preferably, a third abutment block is fixedly connected to the other end of the second guide rod, and both ends of the third abutment block are provided with abutment arc surfaces. Two second fixing frames are fixedly connected to the inner wall of the activated carbon storage mesh frame, and two abutment rods are slidably installed on the inner wall of the second fixing frames.

[0013] Preferably, one end of the abutment rod has a second abutment slope, and a second return spring is sleeved on the abutment rod. One end of the second return spring is fixedly connected to the outer wall of the second fixed frame, and the other end of the second return spring is fixedly connected to a flat plate. The flat plate is fixedly connected to the other end of the abutment rod.

[0014] Preferably, the outer wall of the high-efficiency activated carbon working platform is fixedly equipped with an inspection ladder and a guardrail, the outer wall of the high-efficiency activated carbon filter tank is hinged with an inspection door, the outer wall of the waste oil recovery frame is provided with an annular oil leakage groove, the outer wall of the waste oil recovery frame is fixedly connected with an oil drain port, the top of the high-efficiency activated carbon filter tank is fixedly connected with an exhaust gas recovery pipe, and the inner wall of the exhaust gas recovery pipe is fixedly equipped with a conveying fan.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the airflow acts on the first vortex fan, causing the first vortex fan to rotate along the first fixed plate. When the first vortex fan rotates, it carries the second fixed plate and the entire exhaust pipe along the end of the exhaust gas inlet pipe. At this time, the exhaust gas blown out from the end of the exhaust pipe is sprayed out in a circumferentially inclined manner towards the activated carbon storage mesh frame, further increasing the area of ​​exhaust gas covering the activated carbon storage mesh frame. As the air guide cover swings back and forth, the exhaust gas blown out from the exhaust pipe is guided by the swinging air guide cover, and the range of action of the exhaust gas blowing towards the activated carbon storage mesh frame is more uniform, so that the activated carbon in the activated carbon storage mesh frame is further utilized.

[0016] 2. In this invention, when the activated carbon storage mesh frame rotates, multiple second guide rods move circumferentially. The upward movement of the second guide rods causes the actuating plates to move upward synchronously. When the resistance is released, the first reset spring resets, causing the second guide rods and the actuating plates to move downward. The multiple actuating plates move up and down intermittently, agitating the high-efficiency activated carbon particles stored at the bottom of the activated carbon storage mesh frame. This up-and-down agitation can move the activated carbon near the bottom upward, causing the activated carbon particles to move up and down alternately, thus solving the problem of uneven utilization of activated carbon at the top.

[0017] 3. In this invention, when the second guide rod moves up and down intermittently, the mutual separation of the two abutting rods will cause the smoothing plate to move away from each other synchronously. The smoothing plate is close to the top of the activated carbon stack in the activated carbon storage mesh frame. The mutual movement of the smoothing plate can smooth and flatten the activated carbon particles stacked on the top, making the activated carbon particles stacked more even and the exhaust gas passing through more efficiently. On the other hand, the reciprocating opening and closing action of the smoothing plate can make the upper layer of activated carbon particles in the activated carbon storage mesh frame move downward, and further make the activated carbon alternate up and down in different positions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall side view structure of the present invention; Figure 3 This is a schematic cross-sectional view of the high-efficiency activated carbon filter tank of the present invention; Figure 4 This is a partial cross-sectional structural diagram of the high-efficiency activated carbon filter tank of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the exhaust gas recovery pipe and its surrounding area according to the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 For the present invention Figure 5 Enlarged structural diagram at point B; Figure 8 This is a schematic diagram of the second fixing frame and its surrounding structure according to the present invention.

[0019] In the attached diagram, the components represented by each number are as follows: 1. High-efficiency activated carbon working platform; 2. Maintenance ladder; 3. Guardrail; 4. High-efficiency activated carbon filter tank; 5. Maintenance door; 6. Motor bracket; 7. Drive motor; 8. Exhaust gas recovery pipe; 9. Waste oil recovery frame; 10. Tail gas inlet pipe; 11. Stabilizing shaft; 12. Conveyor fan; 13. Drive shaft; 14. Activated carbon storage mesh frame; 15. Oil drain port; 16. Annular oil leakage trough; 17. Exhaust pipe; 18. First fixing plate; 19. First vortex fan; 20. Second fixing plate; 21. Third fixing plate; 22. Second vortex fan. 23. Fan; 24. First abutting block; 25. First abutting inclined surface; 26. First fixing frame; 27. Rotating rod; 28. Torsion spring; 29. ​​Rotating block; 30. Air guide cover; 31. First guide rod; 32. First ball bearing; 33. Second guide rod; 34. Second abutting block; 35. Actuating plate; 36. Fixing piece; 37. First return spring; 38. Third abutting block; 39. Abutting arc surface; 40. Abutting rod; 41. Second abutting inclined surface; 42. Second return spring; 43. Smoothing plate; 44. Second fixing frame. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] This invention provides a technical solution: such as Figure 1 - Figure 8The waste oil recycling device shown includes a high-efficiency activated carbon working platform 1 and a high-efficiency activated carbon filter tank 4 fixedly installed on the high-efficiency activated carbon working platform 1. A waste oil recycling frame 9 is fixedly connected to the bottom of the high-efficiency activated carbon filter tank 4. A tail gas inlet pipe 10 is fixedly connected to the inner wall of the waste oil recycling frame 9. A first fixing plate 18 is fixedly connected to the inner wall of the tail gas inlet pipe 10. A first vortex fan 19 is rotatably installed on the outer wall of the first fixing plate 18. A second fixing plate 20 is fixedly connected to the end of the first vortex fan 19. An outlet pipe 17 is fixedly sleeved on the outer wall of the second fixing plate 20. The outlet pipe 17 is rotatably installed at the end of the tail gas inlet pipe 10. A third fixing plate 21 is fixedly connected to the inner wall of the outlet pipe 17. A second vortex fan 22 is rotatably installed on the outer wall of the third fixing plate 21. A first abutment block 23 is fixedly connected to the outer wall of the second vortex fan 22. A guide cover 29 is hinged to the end of the outlet pipe 17.

[0022] The outer wall of the air guide cover 29 is fixedly connected to the first guide rod 30. One end of the first guide rod 30 is rotatably mounted with the first ball bearing 31. The outer wall of the first contact block 23 is provided with the first contact slope 24. The first ball bearing 31 slides in contact with the surface of the first contact slope 24.

[0023] A first fixing frame 25 is fixedly connected to the end of the air outlet pipe 17. A rotating rod 26 is rotatably installed on the inner wall of the first fixing frame 25. A rotating block 28 is fixedly connected to the outer wall of the rotating rod 26. The outer wall of the rotating block 28 is fixedly connected to the outer wall of the air guide cover 29. A torsion spring 27 is sleeved on the rotating rod 26. One end of the torsion spring 27 is fixedly connected to the inner wall of the first fixing frame 25, and the other end of the torsion spring 27 is fixedly connected to the outer wall of the rotating block 28.

[0024] A motor bracket 6 is fixedly connected to the top of the high-efficiency activated carbon filter tank 4. A drive motor 7 is fixedly installed on the outer wall of the motor bracket 6. A drive shaft 13 is fixedly connected to the output end of the drive motor 7. A stabilizing shaft 11 is rotatably installed on the outer wall of the drive shaft 13. The stabilizing shaft 11 is rotatably installed on the inner wall of the motor bracket 6.

[0025] An activated carbon storage mesh frame 14 is fixedly installed at the end of the drive shaft 13. The activated carbon storage mesh frame 14 is a metal mesh frame. Multiple second guide rods 32 are slidably installed on the inner wall of the activated carbon storage mesh frame 14. A toggle plate 35 is fixedly connected to the outer wall of the second guide rods 32.

[0026] A fixing plate 36 is fixedly connected to the outer wall of the second guide rod 32. A first reset spring 37 is sleeved on the second guide rod 32. One end of the first reset spring 37 is fixedly connected to the outer wall of the fixing plate 36, and the other end of the first reset spring 37 is fixedly connected to the outer wall of the activated carbon storage mesh frame 14.

[0027] A second ball bearing 33 is rotatably mounted on one end of the second guide rod 32, and multiple annularly distributed second contact blocks 34 are fixedly connected to the inner wall of the high-efficiency activated carbon filter tank 4. The ends of the second contact blocks 34 are set in a hemispherical shape.

[0028] The other end of the second guide rod 32 is fixedly connected to a third abutment block 38. Both ends of the third abutment block 38 are provided with abutment arc surfaces 39. The inner wall of the activated carbon storage mesh frame 14 is fixedly connected to two second fixing frames 44. The inner wall of the second fixing frames 44 is slidably installed with two abutment rods 40.

[0029] One end of the abutment rod 40 is provided with a second abutment slope 41, and a second return spring 42 is sleeved on the abutment rod 40. One end of the second return spring 42 is fixedly connected to the outer wall of the second fixed frame 44, and the other end of the second return spring 42 is fixedly connected to a smoothing plate 43, which is fixedly connected to the other end of the abutment rod 40.

[0030] The outer wall of the high-efficiency activated carbon working platform 1 is fixedly equipped with a maintenance ladder 2 and a guardrail 3. The outer wall of the high-efficiency activated carbon filter tank 4 is hinged with a maintenance door 5. The outer wall of the waste oil recovery frame 9 is provided with an annular oil leakage groove 16. The outer wall of the waste oil recovery frame 9 is fixedly connected with an oil drain port 15. The top of the high-efficiency activated carbon filter tank 4 is fixedly connected with an exhaust gas recovery pipe 8. The inner wall of the exhaust gas recovery pipe 8 is fixedly equipped with a conveying fan 12.

[0031] Working principle: When using the waste mineral oil recycling and treatment tail gas recovery device, the worker can first climb onto the surface of the high-efficiency activated carbon working platform 1 through the maintenance ladder 2, then open the maintenance door 5, pour the activated carbon granules into the activated carbon storage mesh frame 14 in batches, so that the activated carbon storage mesh frame 14 is filled with high-efficiency activated carbon granules, then close the maintenance door 5, and start the tail gas recovery work.

[0032] First, the waste mineral oil tail gas is pressurized and transported through the tail gas inlet pipe 10. The exhaust gas enters the tail gas inlet pipe 10 and is then transported out through the port of the tail gas inlet pipe 10. The tail gas enters the high-efficiency activated carbon filter tank 4, and the direction of tail gas transportation is obliquely upward. As the airflow is transported, the airflow acts on the first vortex fan 19, causing the first vortex fan 19 to rotate along the first fixed plate 18. When the first vortex fan 19 rotates, it carries the second fixed plate 20 and the entire exhaust pipe 17 to rotate along the end of the tail gas inlet pipe 10. At this time, the tail gas blown out from the end of the exhaust pipe 17 is sprayed out in a circumferentially inclined manner towards the activated carbon storage mesh frame 14, further increasing the area of ​​tail gas covering the activated carbon storage mesh frame 14.

[0033] As the exhaust gas is transported along the outlet pipe 17, it also drives the second vortex fan 22 to rotate along the surface of the third fixed plate 21. When the second vortex fan 22 rotates, it causes the first contact block 23 to rotate synchronously. When the first contact block 23 rotates, it causes the first ball bearing 31, which is in sliding contact with its surface, to move circumferentially along the surface of the first contact slope 24. Due to the inclined setting of the first contact slope 24, the first ball bearing 31, along with the first guide rod 30 and the air guide cover 29, reciprocates up and down. The reciprocating up and down deflection of the air guide cover 29 causes the air guide cover 29 and the rotating rod 26 to rotate along the inner wall of the first fixed frame 25. As the air guide cover 29 swings back and forth, the exhaust gas blown out of the outlet pipe 17 is guided by the reciprocating air guide cover 29, and the exhaust gas blown onto the activated carbon storage mesh frame 14 has a more uniform range of action, so that the activated carbon in the activated carbon storage mesh frame 14 is further utilized.

[0034] During the exhaust gas recovery process, the drive motor 7 also needs to be started. After the drive motor 7 is started, it drives the drive shaft 13 at the output end to rotate. When the drive shaft 13 rotates, it drives the entire activated carbon storage mesh frame 14 to rotate. It should be noted that the rotation direction of the activated carbon storage mesh frame 14 is opposite to the rotation direction of the exhaust pipe 17. This allows the exhaust gas blown from the exhaust pipe 17 to the activated carbon storage mesh frame 14 to be sprayed more evenly onto the activated carbon balls on the activated carbon storage mesh frame 14.

[0035] After the exhaust gas is adsorbed and filtered by the activated carbon balls stacked on the activated carbon storage mesh frame 14, it continues to float up into the space between the activated carbon storage mesh frame 14 and the exhaust gas recovery pipe 8. At this time, the conveying fan 12 is started, and the conveying fan 12 conveys the purified exhaust gas to the outside.

[0036] When the activated carbon storage frame 14 rotates, multiple second guide rods 32 move circumferentially, and the second ball bearings 33 at the ends of the second guide rods 32 move accordingly. The movement trajectory of the second ball bearings 33 will collide with the ends of multiple second contact blocks 34. The collision causes the second ball bearings 33 to move upward with the second guide rods 32. When moving upward, the fixing plate 36 moves upward synchronously. When the fixing plate 36 moves upward, it compresses the first return spring 37. The upward movement of the second guide rods 32 causes the actuating plate 35 to move upward synchronously. When the collision is released, the first return spring 37 returns to its original position, causing the second guide rods 32 and the actuating plate 35 to move downward. The multiple actuating plates 35 move up and down intermittently, moving the high-efficiency activated carbon particles stored at the bottom of the activated carbon storage frame 14 up and down. The up and down movement can move the activated carbon near the bottom upward, so that the activated carbon particles move up and down alternately, solving the problem of uneven utilization of activated carbon at the top.

[0037] As the second guide rod 32 moves up and down intermittently, it moves upward, causing the third abutment block 38 at its end to move upward synchronously. When the third abutment block 38 moves upward, the abutment arc surfaces 39 at both ends of the third abutment block 38 will abut against the second abutment slopes 41 on both sides. This abutment causes the second abutment slopes 41 to be forced to move the abutment rods 40 on both sides away from each other. The movement of the two abutment rods 40 away from each other will cause the smoothing plate 43 to move away from each other synchronously. The smoothing plate 43 is close to the top of the activated carbon stack in the activated carbon storage mesh frame 14. The movement of the smoothing plate 43 away from each other can, on the one hand, smooth and flatten the activated carbon particles stacked on the top, making the activated carbon particles stacked more even and the exhaust gas passing through more efficiently. On the other hand, the reciprocating opening and closing action of the smoothing plate 43 can make the upper layer of activated carbon particles in the activated carbon storage mesh frame 14 move, loosening the activated carbon particles near the top downward, and further alternating the up and down of activated carbon in different positions.

[0038] The oil remaining after filtration will slide down the inner wall of the high-efficiency activated carbon filter tank 4 into the annular oil leakage trough 16, and will eventually be stored in the waste oil recovery frame 9, and can be discharged through the oil drain port 15.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste mineral oil recycling and treatment tail gas recovery device, comprising a high-efficiency activated carbon working platform (1) and a high-efficiency activated carbon filter tank (4) fixedly installed on the high-efficiency activated carbon working platform (1), characterized in that: The bottom of the high-efficiency activated carbon filter tank (4) is fixedly connected to a waste oil recovery frame (9). The inner wall of the waste oil recovery frame (9) is fixedly connected to a tail gas inlet pipe (10). The inner wall of the tail gas inlet pipe (10) is fixedly connected to a first fixed plate (18). The outer wall of the first fixed plate (18) is rotatably installed with a first vortex fan (19). The end of the first vortex fan (19) is fixedly connected to a second fixed plate (20). The outer wall of the second fixed plate (20) is fixedly fitted with an outlet pipe (17). The outlet pipe (17) is rotatably installed at the end of the tail gas inlet pipe (10). The inner wall of the outlet pipe (17) is fixedly connected to a third fixed plate (21). The outer wall of the third fixed plate (21) is rotatably installed with a second vortex fan (22). The outer wall of the second vortex fan (22) is fixedly connected to a first abutment block (23). The end of the outlet pipe (17) is hingedly installed with a guide cover plate (29). The outer wall of the air guide cover (29) is fixedly connected to a first guide rod (30), and a first ball bearing (31) is rotatably installed at one end of the first guide rod (30). The outer wall of the first contact block (23) is provided with a first contact slope (24), and the first ball bearing (31) slides in contact with the surface of the first contact slope (24). The top of the high-efficiency activated carbon filter tank (4) is fixedly connected to a motor bracket (6), and a drive motor (7) is fixedly installed on the outer wall of the motor bracket (6). The output end of the drive motor (7) is fixedly connected to a drive shaft (13), and a stabilizing shaft (11) is rotatably installed on the outer wall of the drive shaft (13). The stabilizing shaft (11) is rotatably installed on the inner wall of the motor bracket (6). An activated carbon storage mesh frame (14) is fixedly installed at the end of the drive shaft (13). The activated carbon storage mesh frame (14) is a metal mesh frame. Multiple second guide rods (32) are slidably installed on the inner wall of the activated carbon storage mesh frame (14). A toggle plate (35) is fixedly connected to the outer wall of the second guide rods (32). A fixing plate (36) is fixedly connected to the outer wall of the second guide rod (32), and a first reset spring (37) is sleeved on the second guide rod (32). One end of the first reset spring (37) is fixedly connected to the outer wall of the fixing plate (36), and the other end of the first reset spring (37) is fixedly connected to the outer wall of the activated carbon storage mesh frame (14).

2. The waste mineral oil recovery and treatment tail gas recovery device according to claim 1, characterized in that: The end of the air outlet pipe (17) is fixedly connected to a first fixed frame (25). A rotating rod (26) is rotatably installed on the inner wall of the first fixed frame (25). A rotating block (28) is fixedly connected to the outer wall of the rotating rod (26). The outer wall of the rotating block (28) is fixedly connected to the outer wall of the air guide cover (29). A torsion spring (27) is sleeved on the rotating rod (26). One end of the torsion spring (27) is fixedly connected to the inner wall of the first fixed frame (25), and the other end of the torsion spring (27) is fixedly connected to the outer wall of the rotating block (28).

3. The waste mineral oil recovery and treatment tail gas recovery device according to claim 1, characterized in that: A second ball bearing (33) is rotatably mounted on one end of the second guide rod (32), and a plurality of annularly distributed second abutment blocks (34) are fixedly connected to the inner wall of the high-efficiency activated carbon filter tank (4), with the ends of the second abutment blocks (34) being set in a hemispherical shape.

4. The waste mineral oil recovery device according to claim 1, characterized in that: The other end of the second guide rod (32) is fixedly connected to a third abutment block (38). Both ends of the third abutment block (38) are provided with abutment arc surfaces (39). The inner wall of the activated carbon storage mesh frame (14) is fixedly connected to two second fixed frames (44). The inner wall of the second fixed frames (44) is slidably installed with two abutment rods (40).

5. The waste mineral oil recovery device according to claim 4, characterized in that: One end of the abutment rod (40) is provided with a second abutment slope (41), and a second return spring (42) is sleeved on the abutment rod (40). One end of the second return spring (42) is fixedly connected to the outer wall of the second fixed frame (44), and the other end of the second return spring (42) is fixedly connected to a flat plate (43). The flat plate (43) is fixedly connected to the other end of the abutment rod (40).

6. The waste mineral oil recovery and treatment tail gas recovery device according to claim 1, characterized in that: The outer wall of the high-efficiency activated carbon working platform (1) is fixedly equipped with a maintenance ladder (2) and a guardrail (3). The outer wall of the high-efficiency activated carbon filter tank (4) is hinged with a maintenance door (5). The outer wall of the waste oil recovery frame (9) is provided with an annular oil leakage groove (16). The outer wall of the waste oil recovery frame (9) is fixedly connected with an oil drain (15). The top of the high-efficiency activated carbon filter tank (4) is fixedly connected with an exhaust gas recovery pipe (8). The inner wall of the exhaust gas recovery pipe (8) is fixedly equipped with a conveying fan (12).

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