A microwave plasma treatment of waste mineral oil device

Abstract

The utility model discloses a microwave plasma processing waste mineral oil device, including the processing box, the processing box top fixed installation has the installation pipe, the installation pipe is fixed and installed with the microwave storehouse, the microwave storehouse is set up in the inclination forty -five degrees, be equipped with microwave generator on the microwave storehouse, the processing box both sides are equipped with two groups of symmetrical distribution's plasma generator, the processing box top rotatory installation has the mounting rod, the telescopic link is slidably installed in the mounting rod, the telescopic link is slidably installed in the telescopic support, the telescopic support is fixed and installed with the rack, through the microwave section processing pipe and the synergies of plasma cavity of inclination setting, has realized the grading efficient processing of waste mineral oil, and the microwave section is evaporated in 2450MHz frequency under the priority of waste mineral oil moisture and cracking light component, and the heavy component that has not been completely decomposed falls into the plasma area under the action of gravity naturally, avoids the energy waste that leads to the mixed processing of light, heavy component in traditional craft.

Description

Technical Field

[0001] This utility model relates to the field of waste mineral oil treatment technology, specifically to a microwave plasma treatment device for waste mineral oil. Background Technology

[0002] Waste mineral oil is a hazardous waste generated during industrial production processes such as machining, automobile repair, and petroleum refining. It contains a large number of harmful substances, and improper handling can cause serious environmental pollution. Traditional treatment methods mainly include incineration, chemical treatment, and physical separation. Microwave plasma technology, as an emerging treatment method, generates high-temperature plasma to break the molecular bonds of organic matter, thereby achieving the complete decomposition of waste oil.

[0003] In the field of traditional waste mineral oil treatment, technologies such as distillation, centrifugal separation, or fixed-bed catalytic cracking are commonly used. However, these methods generally suffer from problems such as high energy consumption, low recovery rate of light components, and incomplete treatment of heavy components. Especially for waste oil with high viscosity and high impurities, conventional thermal cracking equipment is prone to coking and blockage, leading to decreased heat transfer efficiency and secondary pollution. Although existing microwave treatment technology can promote molecular vibration cracking, its gasification efficiency for heavy components is limited. While plasma technology can generate high temperatures to completely decompose organic matter, it consumes too much energy when directly treating raw waste oil, and solid residues tend to accumulate, affecting continuous operation. In addition, existing devices mostly use static treatment chambers, resulting in uneven heating of materials and difficulty in automatically removing undecomposed residues. Utility Model Content

[0004] The purpose of this invention is to provide a microwave plasma treatment device for waste mineral oil, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a microwave plasma treatment device for waste mineral oil, comprising a treatment box, an installation pipe fixedly installed above the treatment box, a microwave chamber fixedly installed on the installation pipe, the microwave chamber being inclined at 45 degrees, a microwave generator being provided on the microwave chamber, two sets of symmetrically distributed plasma generators being provided on both sides of the treatment box, an installation rod rotatably installed on the treatment box, a telescopic rod slidably installed inside the installation rod, a telescopic frame slidably installed inside the telescopic rod, and a material rack fixedly installed on the telescopic frame. The material rack is located below two sets of plasma generators. The material rack is conical in shape. A screw is rotatably installed inside the mounting rod, and a spiral tube is rotatably installed inside the telescopic rod. A fixed frame is fixedly installed inside the processing box, and a mounting base is fixedly installed on the fixed frame. A cleaning brush is rotatably installed inside the mounting base, and the cleaning brush is correspondingly arranged with the material rack. A movable base is slidably installed on the fixed frame, and a scraper is slidably installed inside the movable base, and the scraper is correspondingly arranged with the cleaning brush. An installation ring is rotatably installed below the processing box, and multiple sets of annularly distributed screening plates are provided below the processing box.

[0006] As a further preferred embodiment of this technical solution, the lower end of the screw passes through the telescopic rod and is threadedly connected to the telescopic rod, the lower end of the screw tube passes through the telescopic frame and is threadedly connected to the telescopic frame, the screw is provided with two sets of symmetrically distributed sliding grooves, the screw tube is provided with two sets of symmetrically distributed sliders, the sliders are correspondingly arranged with the sliding grooves, and the screw tube is slidably sleeved with the screw through the sliders and sliding grooves.

[0007] As a further preferred embodiment of this technical solution, a first gear is sleeved on the mounting base, a first rack is slidably installed in the fixing frame, a first cylinder is fixedly installed in the fixing frame, the first rack is fixedly connected to the output end of the piston rod of the first cylinder, and the first rack is meshed with the first gear.

[0008] As a further preferred embodiment of this technical solution, a second gear is sleeved on the cleaning brush, a second rack is slidably installed in the mounting base, the second rack is meshed with the second gear, a second cylinder is fixedly installed in the mounting base, and the second rack is fixedly connected to the output end of the piston rod of the second cylinder.

[0009] As a further preferred embodiment of this technical solution, the fixed frame is provided with a lead screw, the two ends of which pass through the fixed frame and are rotatably connected to the fixed frame through rolling bearings, and the lead screw passes through the movable seat and is threadedly connected to the movable seat.

[0010] As a further preferred embodiment of this technical solution, a slide rod is fixedly installed inside the movable seat, the scraper is slidably sleeved with the slide rod, two sets of symmetrically distributed springs are sleeved on the slide rod, the two ends of the two sets of springs are fixedly connected to the scraper and the movable seat respectively, and a cam is rotatably installed inside the movable seat, the cam being fitted with the scraper.

[0011] As a further preferred embodiment of this technical solution, the multiple sets of screening plates are rotatably connected to the processing box via mounting shafts, each set of mounting shafts is fitted with a third gear, the mounting ring is fitted with a toothed ring, the multiple sets of mounting shafts are circumferentially distributed around the mounting ring, and the multiple sets of third gears are meshed with the toothed ring.

[0012] This utility model provides a microwave plasma treatment device for waste mineral oil, which has the following beneficial effects:

[0013] (1) This utility model achieves efficient graded treatment of waste mineral oil through the synergistic effect of the inclined microwave segment processing tube and the plasma cavity. The microwave segment preferentially evaporates water and breaks down light components in the waste mineral oil at a frequency of 2450MHz, while the heavy components that cannot be completely decomposed fall naturally into the plasma zone under the action of gravity, avoiding the energy waste caused by the mixed treatment of light and heavy components in traditional processes. The conical material rack rotates at a uniform speed and is designed with adjustable height to ensure that the heavy components are heated evenly, effectively preventing local overheating or coking. At the same time, the residues that cannot be decomposed on the material rack can be automatically removed by the cleaning mechanism as the material rack moves down, which greatly improves the stability of continuous operation.

[0014] (2) This utility model drives the material rack to lift and lower through the linkage mechanism of screw and spiral tube. Combined with the first gear, first rack, second gear, and second rack, the cleaning brush and elastic scraper system with adjustable angle realize the efficient collection of residues and the self-cleaning function of the equipment, reducing the cost of manual maintenance. The multi-stage screening plate and the rotating installation ring cooperate to collect the impurities cleaned from the material rack, which is convenient for the staff to collect and process in a unified manner, and does not affect the gas treated by the plasma generator from being discharged from the bottom of the treatment box. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the processing box of this utility model;

[0017] Figure 3 For the present utility model Figure 2 Enlarged view of the structure at point A;

[0018] Figure 4 This is a schematic diagram of the material rack of this utility model;

[0019] Figure 5 This is a schematic diagram showing the structural separation of the fixed frame and the movable base of this utility model;

[0020] Figure 6 For the present utility model Figure 5 Enlarged structural diagram at point -B;

[0021] In the diagram: 1. Processing box; 2. Mounting tube; 3. Microwave chamber; 4. Microwave generator; 5. Plasma generator; 6. Mounting rod; 7. Telescopic rod; 8. Telescopic frame; 9. Material rack; 10. Screw; 11. Screw tube; 12. Slide groove; 13. Slider; 14. Fixed frame; 15. Moving seat; 16. Lead screw; 17. Mounting seat; 18. First gear; 19. First rack; 20. First cylinder; 21. Cleaning brush; 22. Second gear; 23. Second rack; 24. Second cylinder; 25. Scraper; 26. Slide rod; 27. Spring; 28. Cam; 29. ​​Mounting ring; 30. Screening plate; 31. Mounting shaft; 32. Third gear; 33. Gear ring. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] This utility model provides a technical solution: such as Figures 1-4As shown, in this embodiment, a microwave plasma treatment device for waste mineral oil includes a treatment box 1, an installation pipe 2 fixedly installed above the treatment box 1, a microwave chamber 3 fixedly installed on the installation pipe 2, the microwave chamber 3 being inclined at 45 degrees, a microwave generator 4 being provided on the microwave chamber 3, two sets of symmetrically distributed plasma generators 5 being provided on both sides of the treatment box 1, an installation rod 6 rotatably installed on the treatment box 1, a telescopic rod 7 slidably installed inside the installation rod 6, a telescopic frame 8 slidably installed inside the telescopic rod 7, a material rack 9 fixedly installed on the telescopic frame 8, the material rack 9 being located below the two sets of plasma generators 5, the material rack 9 being conical in shape, and the installation rod 6 being rotatably installed inside the material rack 5. A screw 10 is installed, and a screw tube 11 is rotatably installed inside the telescopic rod 7. A fixed frame 14 is fixedly installed inside the processing box 1, and a mounting base 17 is fixedly installed on the fixed frame 14. A cleaning brush 21 is rotatably installed inside the mounting base 17, and the cleaning brush 21 is correspondingly set with the material rack 9. A movable seat 15 is slidably installed on the fixed frame 14, and a scraper 25 is slidably installed inside the movable seat 15, and the scraper 25 is correspondingly set with the cleaning brush 21. An installation ring 29 is rotatably installed below the processing box 1. Multiple sets of annularly distributed screening plates 30 are provided below the processing box 1. The lower end of the screw 10 passes through the telescopic rod 7 and is threadedly connected to the telescopic rod 7. The lower end of the screw tube 11 passes through the telescopic rod 7. The frame 8 is threadedly connected to the telescopic frame 8. The screw 10 has two sets of symmetrically distributed sliding grooves 12, and the screw tube 11 has two sets of symmetrically distributed sliders 13. The sliders 13 correspond to the sliding grooves 12. The screw tube 11 is slidably connected to the screw 10 via the sliders 13 and sliding grooves 12. Waste mineral oil first enters the microwave segment processing tube inclined at 45°. Under the action of 2450MHz microwaves, the water and light components in the waste mineral oil are heated and evaporated, undergoing a cracking reaction. The incompletely decomposed heavy components fall into the plasma processing chamber below under gravity, where they are further vaporized and decomposed by the high-temperature plasma generated by the plasma generators 5 on both sides. The motor on the feed box 1 drives the mounting rod 6, telescopic rod 7, and telescopic frame 8 to rotate at a constant speed, which in turn causes the conical feed rack 9 to rotate the heavy components falling from the mounting tube 2 at a constant speed. At the same time, as the motor in the mounting rod 6 drives the screw 10 to rotate, the slider 13 and the slide groove 12 can drive the screw tube 11 to rotate synchronously. Under the limiting action of the mounting rod 6, the height of the telescopic rod 7 is adjusted. Under the limiting action of the telescopic rod 7, the height of the telescopic frame 8 and the height of the conical feed rack 9 below are also adjusted. The distance between the heavy components on the feed rack 9 and the plasma generator 5 is adjusted so that the residue is evenly exposed to the plasma flame for continuous decomposition.During the processing, the material rack 9 periodically moves downwards to contact the cleaning brush 21 through the vertical sliding of the telescopic rod 7 and telescopic frame 8. The cleaning brush 21 remains in a fixed position, while the material rack 9 continues to rotate at a constant speed under the action of the mounting rod 6, telescopic rod 7, and telescopic frame 8. The surface in contact with the cleaning brush 21 is scraped by the cleaning brush 21, removing non-degradable solid residues from the surface of the material rack 9. When the material rack 9 aligns with the cleaning brush 21, there is a large gap between it and the inner wall of the processing box 1. The scraped residues fall directly into the lower part of the processing box 1 onto the multiple sets of screening plates 30.

[0024] like Figure 5 and Figure 6As shown, a first gear 18 is sleeved on the mounting base 17, a first rack 19 is slidably installed in the fixing frame 14, a first cylinder 20 is fixedly installed in the fixing frame 14, the first rack 19 is fixedly connected to the output end of the piston rod of the first cylinder 20, and the first rack 19 is meshed with the first gear 18. A second gear 22 is sleeved on the cleaning brush 21, a second rack 23 is slidably installed in the mounting base 17, and the second rack 23 is meshed with the second gear 22. A second cylinder 24 is fixedly installed in the mounting base 17, and the second rack 23 is fixedly connected to the output end of the piston rod of the second cylinder 24. A lead screw 16 is provided in the fixing frame 14. The two ends of the screw 16 pass through the fixed frame 14 and are rotatably connected to the fixed frame 14 via rolling bearings. The screw 16 passes through the movable seat 15 and is threadedly connected to the movable seat 15. A slide rod 26 is fixedly installed inside the movable seat 15. The scraper 25 is slidably sleeved with the slide rod 26. Two sets of symmetrically distributed springs 27 are sleeved on the slide rod 26. The two ends of the two sets of springs 27 are fixedly connected to the scraper 25 and the movable seat 15, respectively. A cam 28 is rotatably installed inside the movable seat 15. The cam 28 is fitted with the scraper 25. Multiple sets of screening plates 30 are rotatably connected to the processing box 1 via mounting shafts 31. A third gear 32 is sleeved on each of the multiple sets of mounting shafts 31. A toothed ring 33 is fitted onto the mounting ring 29. Multiple sets of mounting shafts 31 are distributed in a ring around the mounting ring 29. Multiple sets of third gears 32 are engaged with the toothed ring 33. After the cleaning brush 21 has been used for a period of time, the first cylinder 20 in the fixing frame 14 drives the first rack 19 to slide, which in turn drives the mounting base 17 and the cleaning brush 21 on the mounting base 17 to rotate. At the same time, the second cylinder 24 in the mounting base 17 drives the second rack 23 to slide, which in turn drives the second gear 22 to rotate the cleaning brush 21 in the mounting base 17 until the cleaning brush 21 is in contact with the scraper 25. The motor drives the lead screw 16 to rotate, and under the limiting action of the fixed frame 14, the movable seat 15 drives the scraper 25 to slide. The motor drives the cam 28 in the movable seat 15 to rotate, pushing the scraper 25 that is in contact with it. With the help of the spring 27 and the slide bar 26, the scraper 25 slides back and forth in the movable seat 15 to clean the impurities adhering to the cleaning brush 21. At the same time, the vibration of the scraper 25 shakes off the impurities cleaned from the cleaning brush 21 and they fall onto the multiple sets of screening plates 30 below the processing box 1. The closed screening plates 30 do not affect the discharge of gas after plasma treatment because of their holes, and at the same time play a role in collecting solid residues.

[0025] This invention provides a microwave plasma treatment device for waste mineral oil. The specific working principle is as follows: The waste mineral oil first enters a microwave treatment tube inclined at 45°. Under the action of 2450MHz microwaves, the water and light components in the waste mineral oil are heated and evaporated, undergoing a cracking reaction. The incompletely decomposed heavy components fall into the plasma treatment chamber below under gravity, where they are further vaporized and decomposed by the high-temperature plasma generated by the plasma generators 5 on both sides. A motor on the treatment box 1 drives the mounting rod 6, telescopic rod 7, and telescopic frame 8 to rotate at a uniform speed, thereby causing the conical material rack 9 to drive the heavy components falling from the mounting tube 2 to rotate at a uniform speed. Simultaneously, the motor in the mounting rod 6 drives the screw 10 to rotate... During the process, the slider 13 and the slide groove 12 can drive the screw tube 11 to rotate synchronously, thereby adjusting the height of the telescopic rod 7 under the limiting action of the mounting rod 6. Under the limiting action of the telescopic rod 7, the height of the telescopic frame 8 and the height of the conical material rack 9 below are also adjusted. The distance between the heavy components on the material rack 9 and the plasma generator 5 is adjusted so that the residue is evenly exposed to the plasma flame for continuous decomposition. During the processing, the material rack 9 is periodically lowered to contact the cleaning brush 21 by the vertical sliding of the telescopic rod 7 and the telescopic frame 8. The cleaning brush 21 is fixed in position, while the material rack 9 continues to rotate at a constant speed under the action of the mounting rod 6, the telescopic rod 7, and the telescopic frame 8, in contact with the cleaning brush 21. The contact surface is scraped by the cleaning brush 21, removing non-degradable solid residues from the surface of the material rack 9. When the material rack 9 corresponds to the cleaning brush 21, there is a large gap between it and the inner wall of the processing box 1. The scraped residues fall directly into the lower part of the processing box 1 and are located on the multiple sets of screening plates 30. After the cleaning brush 21 has been used for a period of time, the first cylinder 20 in the fixed frame 14 drives the first rack 19 to slide, which in turn drives the mounting base 17 and the cleaning brush 21 on the mounting base 17 to rotate. At the same time, the second cylinder 24 in the mounting base 17 drives the second rack 23 to slide, which in turn drives the second gear 22 to rotate the cleaning brush 21 in the mounting base 17 until the cleaning brush... The cleaning brush 21 is attached to the scraper 25. The motor in the fixed frame 14 drives the lead screw 16 to rotate. Under the limiting action of the fixed frame 14, the moving seat 15 drives the scraper 25 to slide. The motor in the moving seat 15 drives the cam 28 to rotate, pushing the scraper 25 attached to it. With the help of the spring 27 and the slide bar 26, the scraper 25 slides back and forth in the moving seat 15 to clean the impurities adhering to the cleaning brush 21. At the same time, the vibration of the scraper 25 shakes off the impurities cleaned from the cleaning brush 21 and drops them onto the multiple sets of screening plates 30 below the treatment box 1. The closed screening plates 30 do not affect the discharge of gas after plasma treatment because of their holes, and at the same time play a role in collecting solid residues.

[0026] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A microwave plasma treatment device for waste mineral oil, comprising a treatment tank (1), characterized in that: An installation pipe (2) is fixedly installed above the processing box (1). A microwave chamber (3) is fixedly installed on the installation pipe (2). The microwave chamber (3) is set at an inclination of 45 degrees. A microwave generator (4) is provided on the microwave chamber (3). Two sets of symmetrically distributed plasma generators (5) are provided on both sides of the processing box (1). An installation rod (6) is rotatably installed on the processing box (1). A telescopic rod (7) is slidably installed inside the installation rod (6). A telescopic frame (8) is slidably installed inside the telescopic rod (7). A material rack (9) is fixedly installed on the telescopic frame (8). The material rack (9) is located below the two sets of plasma generators (5). The material rack (9) is conical. The installation rod (6) is located inside the material rack (5). A screw (10) is rotatably installed, and a screw tube (11) is rotatably installed inside the telescopic rod (7). A fixed frame (14) is fixedly installed inside the processing box (1). An mounting seat (17) is fixedly installed on the fixed frame (14). A cleaning brush (21) is rotatably installed inside the mounting seat (17). The cleaning brush (21) is correspondingly arranged with the material rack (9). A movable seat (15) is slidably installed on the fixed frame (14). A scraper (25) is slidably installed inside the movable seat (15). The scraper (25) is correspondingly arranged with the cleaning brush (21). An installation ring (29) is rotatably installed below the processing box (1). Multiple sets of annularly distributed screening plates (30) are provided below the processing box (1).

2. The microwave plasma treatment device for waste mineral oil according to claim 1, characterized in that: The lower end of the screw (10) passes through the telescopic rod (7) and is threadedly connected to the telescopic rod (7). The lower end of the screw tube (11) passes through the telescopic frame (8) and is threadedly connected to the telescopic frame (8). The screw (10) is provided with two sets of symmetrically distributed sliding grooves (12). The screw tube (11) is provided with two sets of symmetrically distributed sliders (13). The sliders (13) are correspondingly arranged with the sliding grooves (12). The screw tube (11) is slidably sleeved with the screw (10) through the sliders (13) and the sliding grooves (12).

3. The microwave plasma treatment device for waste mineral oil according to claim 1, characterized in that: A first gear (18) is sleeved on the mounting base (17), a first rack (19) is slidably installed in the fixing frame (14), a first cylinder (20) is fixedly installed in the fixing frame (14), the first rack (19) is fixedly connected to the output end of the piston rod of the first cylinder (20), and the first rack (19) is meshed with the first gear (18).

4. The microwave plasma treatment device for waste mineral oil according to claim 1, characterized in that: The cleaning brush (21) is fitted with a second gear (22), and a second rack (23) is slidably installed in the mounting base (17). The second rack (23) meshes with the second gear (22). A second cylinder (24) is fixedly installed in the mounting base (17), and the second rack (23) is fixedly connected to the output end of the piston rod of the second cylinder (24).

5. The microwave plasma treatment device for waste mineral oil according to claim 1, characterized in that: The fixed frame (14) is provided with a lead screw (16). The two ends of the lead screw (16) pass through the fixed frame (14) and are rotatably connected to the fixed frame (14) through rolling bearings. The lead screw (16) passes through the movable seat (15) and is threadedly connected to the movable seat (15).

6. The microwave plasma treatment device for waste mineral oil according to claim 1, characterized in that: A slide rod (26) is fixedly installed inside the movable seat (15). The scraper (25) is slidably sleeved with the slide rod (26). Two sets of symmetrically distributed springs (27) are sleeved on the slide rod (26). The two ends of the two sets of springs (27) are fixedly connected to the scraper (25) and the movable seat (15) respectively. A cam (28) is rotatably installed inside the movable seat (15). The cam (28) is fitted with the scraper (25).

7. The microwave plasma treatment device for waste mineral oil according to claim 1, characterized in that: Multiple sets of screening plates (30) are rotatably connected to the processing box (1) via mounting shafts (31). Each set of mounting shafts (31) is fitted with a third gear (32). Each mounting ring (29) is fitted with a toothed ring (33). Multiple sets of mounting shafts (31) are distributed in a ring around the mounting ring (29). Multiple sets of third gears (32) are meshed with the toothed ring (33).

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