Environment-friendly waste oil regeneration and recovery device
By introducing a rotating tube and scraper ring structure into the distillation kettle, combined with detection and stirring devices, the problems of coking on the inner wall of the distillation kettle and interference from the foam layer were solved, achieving a highly efficient waste oil regeneration and recycling process.
Patent Information
- Application Number
- CN202511464413.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-14
- Publication Date
- 2025-12-02
AI Technical Summary
In the process of waste oil regeneration and recycling, existing distillation kettles are prone to forming a coking layer on the inner wall, which affects heat transfer efficiency and is difficult to detect in real time. In addition, the foam layer in the waste oil interferes with liquid level detection, resulting in low distillation efficiency.
The system employs a rotating tube and scraper ring structure, combined with a detection device and a stirring device, to achieve real-time detection and cleaning of the coking layer on the vessel wall. The foam layer is removed by scrapers and floating rings, thereby improving distillation efficiency.
It effectively reduces the coking layer on the inner wall of the distillation vessel, improves heat transfer efficiency, enhances the accuracy of liquid level detection, and improves the overall distillation efficiency of waste oil recycling.
Smart Images
Figure CN121046112A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of waste oil recycling technology, specifically an environmentally friendly waste oil recycling device. Background Technology
[0002] Waste oil recycling refers to the treatment of used industrial waste oils such as lubricating oil, hydraulic oil, and transformer oil through physical, chemical, or biological methods to remove impurities and contaminants, restoring them to near or at the standard of new oil, thus achieving resource recycling. Common waste oil recycling processes include distillation, filtration and adsorption, and chemical refining. Distillation uses equipment such as a distillation kettle and is suitable for waste mineral oils containing water and light oil impurities, such as waste engine oil and waste diesel oil. Its working principle is to use the difference in boiling points of different substances to separate water, light oil, and heavy oil through heating and evaporation. Waste oil has high viscosity and poor thermal conductivity. If it is not stirred, the oil at the bottom and side walls is prone to local overheating due to its proximity to the heat source, leading to oil cracking and coking. This forms a layer of insulating material on the side walls, affecting heat transfer and distillation efficiency, and may even cause localized boiling and safety hazards. However, during the distillation process, workers cannot monitor the formation or extent of the insulating material on the inner wall of the distillation vessel in real time, making it impossible to clean the inner wall and maintain the distillation efficiency. Furthermore, frequent cleaning or maintaining the cleanliness of the inner wall can easily lead to excessive wear and tear on the inner wall, affecting the distillation process. Summary of the Invention
[0003] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this invention proposes an environmentally friendly waste oil recycling device.
[0004] The technical solution adopted by this invention to solve its technical problem is as follows: This invention proposes an environmentally friendly waste oil recycling device, including a distillation kettle, which includes a kettle body, a heating system, a transmission device, and a feeding and discharging device; it also includes: A rotating tube is rotatably connected to the center of the vessel body, and the top of the rotating tube is connected to a transmission device. The rotating tube is equipped with a first rotating plate and a second rotating plate. The first rotating plate is close to the bottom of the rotating tube, and the second rotating plate is close to the middle of the rotating tube and is located above the first rotating plate. A scraper ring is slidably connected to the inner wall of the vessel body, and a lifting rod is provided on the top of the scraper ring. The top of the lifting rod is connected to a first electric push rod installed on the top of the vessel body. The detection device is installed on one side of the vessel body, and its probe is mounted on the scraper ring. The detection device detects waste oil through the probe. A sliding rod is provided on the rotating tube, and the sliding rod is located at one end of the first rotating plate. The sliding rod extends out of the first rotating plate by a spring, and a pulley is rotatably connected to one side of the sliding rod. The hollow interior of the rotating tube is connected to the hollow interior of the first rotating plate. The end of the sliding rod away from the pulley protrudes from the rotating tube, and one end of the sliding rod is above the vessel body. A sensor is provided between the sliding rod and the rotating tube.
[0005] Preferably, the rotating tube is fitted with a partition cover, and a rotating ring is rotatably connected to the bottom of the partition cover; the partition cover is evenly provided with grooves, and a sliding plate is slidably connected to the grooves through a spring; the second rotating plate is slidably connected to the rotating tube and passes through the sliding plate; the second rotating plate is provided with a floating ring, and a second electric push rod is installed on the top of the vessel body, the telescopic end of the second electric push rod contacts the top of the floating ring through a ball bearing; the top of the vessel body is provided with an electric lifting device, and the electric lifting device is installed on the top of the transmission device to drive the transmission device and the rotating tube to rise and fall.
[0006] Preferably, the bottom of the partition cover is slidably connected to a scraper by a spring, with one end of the scraper located inside the rotating ring near the center of the vessel body, and the other end located outside the rotating ring near the gap between the bottom of the vessel body and the side wall; the scraper ring has a hollow structure inside, and a filter screen is provided at the bottom of the scraper ring, with a filter frame hinged to the bottom of the scraper ring, and the filter screen covering the filter frame.
[0007] Preferably, the top of the scraper ring is slidably connected to the extrusion plate by a spring, and the top of the vessel body is provided with an extrusion rod, the bottom of which contacts the top of the extrusion plate.
[0008] Preferably, the bottom of the extrusion plate is inclined, and a sliding rod is slidably connected to the side wall of the scraper ring away from the reactor body by a spring. One end of the sliding rod is provided with a push plate. The top of the push plate slides on the inclined surface at the bottom of the extrusion plate, and the bottom of the push plate slides on the top plane of the filter frame. A collection box is provided on the side wall of the reactor body, and a discharge gate is hinged to the part of the scraper ring corresponding to the collection box by a torsion spring.
[0009] Preferably, the top of the scraper is rotatably connected to a rotating shaft, and the rotating shaft is evenly provided with unblocking blocks, which extend into the mesh of the filter screen.
[0010] Preferably, the sidewall of the vessel is uniformly provided with intercepting plates, and the intercepting plates penetrate the scraping ring.
[0011] Preferably, the bottom of the scraper ring is provided with dividing plates, which are evenly distributed in a ring and located between the filter frame and the side wall of the vessel body.
[0012] Preferably, the inner surface of the scraper ring contacts the pulley; one end of the first rotating plate is provided with a scraper blade, which is U-shaped and contacts the surface of the sliding rod and the outer peripheral surface of the pulley.
[0013] Preferably, the top of the vessel body is provided with a cleaning plate, and the number of cleaning plates is two; one end of the sliding rod is located inside the scraping ring, and the other end is located outside the scraping ring near the center of the vessel body; the probe of the detection device is installed at the end of the sliding rod away from the scraping ring; the probe of the detection device is located between adjacent cleaning plates; and the cleaning plates are used to clean the probe of the detection device.
[0014] The beneficial effects of this invention are as follows: 1. The environmentally friendly waste oil recycling device of the present invention, when it is necessary to detect the coking layer, the rotating tube briefly stops rotating. The worker removes the bolt used to fix the end of the slide rod that is exposed on the rotating tube. The slide rod is affected by the spring and drives the pulley to extend out of the first rotating tube. The rotating tube starts to rotate slowly again. The pulley extends out of the side wall of the vessel and rolls. The worker uses the detection value to help determine the thickness of the coking layer. Then, the first electric push rod drives the lifting rod to descend. The lifting rod drives the scraper ring to descend and scrape the side wall of the vessel, reducing the impact of the coking layer on distillation and improving the distillation efficiency.
[0015] 2. The environmentally friendly waste oil recycling device of the present invention addresses the issue that during waste oil distillation, waste oil containing emulsified water or surfactants easily forms a stable foam layer on the liquid surface, which floats for a long time, interfering with gas phase dissipation and affecting liquid level detection. During distillation, workers detect the waste oil level through the liquid level detection part or observation window of the detection device. As the waste oil level decreases during distillation, the extension end of the second electric actuator descends and squeezes the floating ring through the ball bearings. The second rotating plate drives the floating ring to rotate, and the ball bearings roll on the floating ring, causing the second rotating plate and the floating ring to descend synchronously with the liquid level while rotating. The second rotating plate and the floating ring, located near the top of the vessel, are positioned on the waste oil surface. The second rotating plate scrapes the waste oil surface, scraping the foam onto the plate and agitating the foam to break it down and remove the foam layer from the waste oil surface, improving detection accuracy and thus enhancing the waste oil distillation effect. Attached Figure Description
[0016] The invention will now be further described with reference to the accompanying drawings.
[0017] Figure 1 This is a perspective view of the present invention; Figure 2 This is a cross-sectional view of the present invention from the front view direction; Figure 3 This is a diagram showing the state when the rotating ring contacts the bottom of the vessel body; Figure 4 yes Figure 2 A magnified view of a section at point A in the middle; Figure 5 yes Figure 3 A magnified view of a section at point B in the middle; Figure 6 This is a top-view sectional view of the present invention; Figure 7 yes Figure 6 A magnified view of a section at point C; Figure 8 This is a diagram showing the state of the pulley rolling on the side wall of the vessel. Figure 9 This is a diagram showing the state of the scraper ring as it descends; Figure 10 This is a cross-sectional view of the partition cover.
[0018] In the diagram: 1. Kettle body; 11. Heating system; 12. Transmission device; 13. Feeding and discharging device; 14. Rotary tube; 15. Rotary plate No. 1; 16. Rotary plate No. 2; 17. Scraper ring; 18. Lifting rod; 19. Electric push rod No. 1; 2. Detection device; 21. Probe; 22. Slide rod; 23. Pulley; 24. Sensor; 25. Partition cover; 26. Rotary ring; 27. Groove; 28. Slide plate; 39. Floating ring; 31. Electric push rod No. 2; 32. Electric lifting device; 33. Scraper; 34. Filter screen; 35. Filter frame; 36. Extrusion plate; 37. Extrusion rod; 38. Sliding rod; 39. Push plate; 40. Collection box; 41. Rotating shaft; 42. Unblocking block; 43. Interceptor plate; 44. Dividing plate; 45. Scraper; 46. Cleaning plate. Detailed Implementation
[0019] 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.
[0020] Example 1: To effectively solve the above problems, see the attached diagram in the instruction manual. Figures 1-10 As shown, an environmentally friendly waste oil recycling device includes a distillation kettle, which comprises a kettle body 1, a heating system 11, a transmission device 12, and a feeding / discharging device 13; it also includes: A rotating tube 14 is rotatably connected to the center of the vessel body 1, and the top of the rotating tube 14 is connected to the transmission device 12. A first rotating plate 15 and a second rotating plate 16 are respectively provided on the rotating tube 14. The first rotating plate 15 is close to the bottom of the rotating tube 14, and the second rotating plate 16 is close to the middle of the rotating tube 14. The second rotating plate 16 is located above the first rotating plate 15. A scraper ring 17 is slidably connected to the inner wall of the vessel body 1, and a lifting rod 18 is provided on the top of the scraper ring 17. The top of the lifting rod 18 is connected to an electric push rod installed on the top of the vessel body 1. The detection device 2 is installed on one side of the vessel body 1, and the probe 21 of the detection device 2 is installed on the scraper ring 17. The detection device 2 detects waste oil through the probe 21. The rotating tube 14 is provided with a sliding rod 22, and the sliding rod 22 is located at one end of the first rotating plate 15. The sliding rod 22 extends out of the first rotating plate 15 by a spring. One side of the sliding rod 22 is rotatably connected to a pulley 23. The hollow interior of the rotating tube 14 is connected to the hollow interior of the first rotating plate 15. The end of the sliding rod 22 away from the pulley 23 protrudes from the rotating tube 14, and one end of the sliding rod 22 is above the vessel body 1. A sensor 24 is provided between the sliding rod 22 and the rotating tube 14. The vessel body 1, heating system 11, transmission device 12, electric actuator, detection device 2, and feeding / discharging device 13 are all conventional components of a distillation vessel. The detection device 2 is divided into a temperature detection section and a liquid level detection section. The temperature detection section is used to detect the temperature of the vessel wall to avoid excessive coking layer affecting the distillation process. The liquid level detection section is used to detect the level of waste oil to avoid dry burning and other situations. The sensor 24 is a conventional displacement sensor. The end of the slide rod 22 protruding from the rotating tube 14 is fixed to the rotating tube 14 by a conventional fixing method, such as by bolts. When the worker removes the bolts, the slide rod 22 can drive the pulley 23 to slide freely within the rotating tube 14 and the first rotating plate 15. The detection device 2 and its probe 21 can be selected to transmit detection data wirelessly.
[0021] Specific workflow: When the water, light oil and heavy oil in the waste oil are separated by heating in the distillation kettle, the worker uses the feeding part of the feeding device 13 to add a certain amount of waste oil into the distillation kettle, and then turns on the heating system 11 to start distillation. During distillation, the transmission device 12 drives the first rotating plate 15 and the second rotating plate 16 to rotate via the rotating tube 14. The first rotating plate 15 and the second rotating plate 16 agitate the waste oil, causing impurities in the waste oil to separate into layers due to centrifugal force. For example, the upper layer of the waste oil consists of a large amount of light oil, the middle layer consists of a large amount of heavy oil, and the lower layer consists of a small amount of aqueous solution and metal shavings, etc. The boiling point of the mixed waste liquid is about 100°C; the boiling point of the light oil ranges from 50 to 350°C; and the boiling point of the heavy oil is about 350°C. Therefore, during the initial heating, the mixed waste liquid and light oil in the waste oil evaporate easily. However, since the mixed waste liquid is located at the bottom, its contact area with the heating part of the inner wall of the vessel 1 is larger than that of the light oil and heavy oil, making the mixed waste liquid evaporate more easily than the light oil. That is, the evaporation process is as follows: first a large amount of mixed waste liquid, then a large amount of light oil, and then heavy oil. When the mixed waste liquid evaporates, the bubbles generated bubble out through the middle and upper layers. The stirring of the No. 1 rotating plate 15 and the No. 2 rotating plate 16 accelerates the rise of the bubbles. When the waste oil rotates, impurities in the waste oil are affected by centrifugal force and move closer to the inner wall of the vessel 1. The vessel 1 is heated through its inner wall, causing impurities to continuously approach and form a coking layer due to the high temperature. Heavy oil contains more substances that form asphalt, making it prone to coking. Rotating plate 15 stirs the middle layer of heavy oil, and rotating plate 16 stirs the upper layer of light oil. When the temperature of the waste oil rises to a range prone to coking, the detection device 2 needs to frequently check the coking condition of the inner wall of the vessel 1. When it is necessary to check the coking layer, the rotating tube 14 stops rotating briefly, and the worker removes the bolt used to fix the end of the slide rod 22 that protrudes from the rotating tube 14. The slide rod 22 is subjected to spring. The spring causes pulley 23 to extend out of the first rotating tube 14. The outer circumference of pulley 23 presses against the side wall of the vessel body 1, and the rotating tube 14 begins to rotate slowly. Pulley 23 extends out and rolls on the side wall of the vessel body 1. For example, when pulley 23 contacts the clean side wall of the vessel body 1, the value detected by sensor 24 is 1. If the value detected by sensor 24 is less than 1 during the rolling process of pulley 23, it means that a coking layer has formed on the side wall of the vessel body 1. The worker judges the thickness of the coking layer based on the difference between the detected values and the values less than 1. At this time, the worker drives the lifting rod 18 to descend through the first electric push rod 19. The lifting rod 18 drives the scraper ring 17 to descend and scrape the side wall of the vessel body 1, reducing the impact of the coking layer on distillation and improving distillation efficiency. After the pulley 23 has rolled a preset distance on the side wall of the vessel 1, the inspection of the pulley 23 is completed. The worker resets and fixes the slide bar 22 and pulley 23, and then restarts the rotation of the rotating tube 14. The scraper ring 17 descends over the pulley 23 to clean the side wall of the vessel 1, remove the coking layer, improve the heat transfer effect, and thus improve the distillation and recovery efficiency of waste oil. During the distillation process, the vapor phase evaporates and is discharged from the top of the vessel 1, while the waste residue generated in the later stage of distillation is discharged from the bottom of the vessel 1.
[0022] Example 2: Based on Embodiment 1, a partition cover 25 is fitted onto the rotating tube 14, and a rotating ring 26 is rotatably connected to the bottom of the partition cover 25; grooves 27 are evenly provided on the partition cover 25, and a sliding plate 28 is slidably connected to the grooves 27 by a spring; a second rotating plate 16 is slidably connected to the rotating tube 14 and passes through the sliding plate 28; a floating ring 3 is provided on the second rotating plate 16, and a second electric push rod 31 is installed on the top of the vessel body 1, with the telescopic end of the second electric push rod 31 contacting the top of the floating ring 3 through a ball bearing; an electric lifting device 32 is provided on the top of the vessel body 1, and the electric lifting device 32 is installed on the top of the transmission device 12 to drive the transmission device 12 and the rotating tube 14 to rise and fall; an observation window can be optionally provided on the side wall of the vessel body 1 for observing the waste oil level; The bottom of the partition cover 25 is slidably connected to a scraper 33 by a spring, with one end of the scraper 33 located inside the rotating ring 26 near the center of the vessel body 1, and the other end located outside the rotating ring 26 near the gap between the bottom and the side wall of the vessel body 1; the scraper ring 17 has a hollow structure inside, and a filter screen 34 is provided at the bottom of the scraper ring 17. A filter frame 35 is hinged to the bottom of the scraper ring 17, and the filter screen 34 covers the filter frame 35; The top of the scraper ring 17 is slidably connected to the extrusion plate 36 by a spring, and the top of the vessel body 1 is provided with an extrusion rod 37, the bottom of which contacts the top of the extrusion plate 36. The bottom of the extrusion plate 36 is inclined. A sliding rod 38 is slidably connected to the side wall of the scraper ring 17 away from the vessel body 1 by a spring. One end of the sliding rod 38 is provided with a push plate 39. The top of the push plate 39 slides on the inclined surface at the bottom of the extrusion plate 36, and the bottom of the push plate 39 slides on the top plane of the filter frame 35. A collection box 4 is provided on the side wall of the vessel body 1, and a discharge gate 171 is hinged to the part of the scraper ring 17 corresponding to the collection box 4 by a torsion spring. The detection device 2 is divided into a temperature detection section and a liquid level detection section. Both sections use conventional detection methods to inspect the interior of the vessel 1. The temperature detection section monitors the vessel wall temperature to prevent excessive coking layers from affecting the distillation process. The liquid level detection section monitors the waste oil level, determining which component—water, light oil, or heavy oil—is being distilled based on the level. The observation window can be made of transparent material, allowing workers to easily observe the distillation process of the waste oil inside the vessel. For example, the evaporation temperature ranges of water, light oil, and heavy oil in the waste oil are different; therefore, the distillation status can be determined by observing the waste oil level and the observation window. The observation window monitors the distillation status of the waste oil, assisting workers in setting the required evaporation temperature range. The No. 1 electric actuator 19, the No. 2 electric actuator 31, and the electric lifting device 32 are all conventional lifting devices, and these three can optionally share a single hydraulic device. This hydraulic device has three lifting parts that are respectively connected to the lifting rod 18, the floating ring 3, and the transmission device 12. The floating ring 3 is located on the top of the No. 2 rotating plate 16 near the top of the vessel body 1. When the waste oil level drops, the scraper ring 17, the No. 2 rotating plate 16, and the floating ring 3 drop together with the waste oil level. The hollow part inside the scraper ring 17 is a square cavity.
[0023] Specific workflow: During waste oil distillation, waste oil containing emulsified water or surfactants easily forms a stable foam layer on the liquid surface, which floats for a long time, interfering with gas phase dissipation and affecting liquid surface detection. During distillation, the worker detects the waste oil level through the liquid surface detection part or observation window of the detection device 2. As the waste oil level decreases during distillation, the telescopic end of the second electric push rod 31 descends and squeezes the floating ring 3 through the ball bearings. The second rotating plate 16 drives the floating ring 3 to rotate, and the ball bearings roll on the floating ring 3, so that the second rotating plate 16 and the floating ring 3 rotate and descend synchronously with the liquid level. The second rotating plate 16 and the floating ring 3, which are close to the top of the vessel 1, are located on the waste oil surface. The second rotating plate 16 scrapes the waste oil surface, scraping the foam onto the second rotating plate 16 on the one hand, and stirring the foam to break it and defoam it on the other hand, removing the foam layer on the waste oil surface, improving detection accuracy, and thus improving the waste oil distillation effect. Furthermore, as the waste oil rotates, the foam follows the rotation. Due to centrifugal force, the foam moves closer to the side wall of the vessel 1. The floating ring 3 is vertical on the surface of the waste oil. As the foam moves towards the side wall of the vessel 1, it is blocked by the floating ring 3 and remains within the inner circle of the floating ring 3, waiting to be agitated and broken by the second rotating plate 16. This prevents the foam from scattering and affecting the defoaming effect, thereby improving the detection accuracy and thus improving the waste oil distillation effect. In addition, when the waste oil rotates, the bottom of the scraper ring 17 is close to the surface of the waste oil, and the floating ring 3 is vertical on the surface of the liquid. This intercepts the rotating waste oil surface, reduces the turbulence amplitude of the waste oil surface, and prevents the waste oil from turbulently entering the waste oil and forming bubbles, which would affect the defoaming efficiency. In the initial stage of distillation, the water in the waste oil evaporates rapidly, while the light and heavy oils evaporate slowly. As the liquid level drops, the electric lifting device 32 drives the transmission device 12 and the rotating tube 14 to descend. The rotating tube 14 drives the partition cover 25, the rotating ring 26, the first rotating plate 15, the second rotating plate 16, and the floating ring 3 to descend. When the water in the waste oil has evaporated completely, the bottom of the rotating ring 26 contacts the bottom of the vessel body 1, making the interior of the partition cover 25 a closed space. The temperature is low during this process, and the coking layer is not easy to form. During the middle stage of distillation, a large amount of light oil in the waste oil evaporates, while heavy oil evaporates slowly. The electric lifting device 32 remains stationary, and the heights of the rotating tube 14, partition cover 25, and rotating ring 26 remain fixed. The transmission device 12 drives the rotating tube 14 and partition cover 25 to rotate continuously. When the waste oil level drops, the telescopic end of the second electric push rod 31 extends to compress the floating ring 3 and lower it. The floating ring 3 drives the second rotating plate 16 to lower, and the second rotating plate 16 drives the sliding plate 28 to slide towards the bottom of the rotating tube 14. While sliding, the sliding plate 28 keeps the portion of the groove 27 containing heavy oil in the waste oil closed. The portion of the groove 27 containing light oil is no longer closed by the sliding plate 28, and the light oil flows into the closed partition cover 25 through the open groove 27. It then gathers in the closed space enclosed by the rotating ring 26 at the bottom of the vessel body 1. The side wall of the vessel body 1 contacts a portion of the light oil for distillation, and the bottom of the vessel body 1 contacts another portion of the light oil for distillation, increasing the contact area between the light oil and the heated part of the inner wall of the vessel body 1, thereby improving the distillation efficiency of the light oil. Furthermore, due to the evaporation of water in the waste oil, the heavy oil in the waste oil is located below the light oil and contacts the bottom of the vessel body 1. Through the blocking of the rotating ring 26 and the partition cover 25, the contact area between the heavy oil and the inner wall of the vessel body 1 is reduced, avoiding the contact between impurities in the heavy oil and the high-temperature inner wall of the vessel body 1, which leads to an increase in the amount of coking layer formed on the inner wall of the vessel body 1. During this process, the contact area of the heavy oil is reduced, and the amount of coking layer formed is reduced. In the later stages of distillation, heavy oil remains in the waste oil. The partition cover 25 drives the rotating ring 26 away from the bottom of the vessel 1, and the heavy oil accumulates at the bottom of the vessel 1. At this time, the second rotating plate 16 descends to its limit position and does not contact the heavy oil. The first rotating plate 15 drives the heavy oil to rotate and distill. The worker uses the pulley 23 to check the coking layer on the inner wall of the vessel 1. Based on the coking layer condition, the scraper ring 17 is used to lift and scrape off the coking layer to avoid frequent scraping and damage to the inner wall of the vessel 1. During this process, a coking layer is easily formed. Through the cooperation of detection and scraper ring 17, the coking layer is removed. By treating the waste oil distillation process differently, it is beneficial to reduce the amount of coking layer on the inner wall of the vessel 1, which facilitates detection and avoids the formation of a large amount of coking layer that affects the heat transfer effect of the inner wall of the vessel 1. By setting scraper 33, the rotation of partition cover 25 drives scraper 33 to rotate, and scraper 33 scrapes the bottom of vessel body 1; in the early stage of distillation, partition cover 25 and scraper 33 are far away from the bottom of vessel body 1; in the middle stage of distillation, partition cover 25 is lowered and scraper 33 scrapes the bottom of vessel body 1; in the later stage of distillation, partition cover 25 is slightly raised, so that heavy oil gathers at the bottom of vessel body 1; because scraper 33 is connected to the bottom of partition cover 25 by spring, even if partition cover 25 is slightly raised, scraper 33 is affected by spring and keeps in contact with the bottom of vessel body 1; scraper 33 continues to scrape the bottom of vessel body 1 in the later stage of distillation to prevent coking at the bottom of vessel body 1. When the scraper ring 17 descends to remove the coking layer, the filter screen 34 is squeezed by the waste oil, causing the filter frame 35 to swing inwards towards the scraper ring 17. The scraped-off coking layer enters the scraper ring 17 along with the waste oil, collecting impurities in the waste oil and preventing an increase in the amount of coking layer due to the increased amount of impurities generated by high temperature in the waste oil. After the scraper ring 17 descends and removes the coking layer, it rises until the extrusion plate 36 contacts the extrusion rod 37. The filter screen 34 and filter frame 35 are no longer squeezed by the waste oil and swing back to their original position under their own gravity. The extrusion plate 36 is squeezed and slides inwards towards the scraper ring 17, squeezing the waste oil and impurities inside the scraper ring 17 and filtering them through the filter screen 34. The waste oil returns to the reactor body 1, while the impurities are collected inside the scraper ring 17, reducing the loss of waste oil during collection. After the scraper ring 17 rises and contacts the opening of the collection box 4, it remains stationary, and the discharge gate 171... No longer obstructed by the inner wall of the vessel body 1, the discharge gate 171 rotates to open the scraper ring 17. At this time, the scraper ring 17 is connected to the collection box 4. The extrusion plate 36 is squeezed and slides towards the filter frame 35. The bottom slope of the extrusion plate 36 squeezes the push plate 39 and slides towards the opening of the collection box 4. The sliding rod 38 extends into the scraper ring 17 to keep the push plate 39 moving stably. The push plate 39 pushes the waste oil impurities after pressing and filtering into the collection box 4, completing the purpose of scraping, filtering and collecting impurities in the waste oil, maintaining the cleanliness of the inner wall of the vessel body 1, which is beneficial for detection, thereby improving the distillation effect of the waste oil. When the scraper ring 17 moves away from the collection box 4 and rises or falls, since the top and bottom of the discharge gate 171 are both sloped, the inner wall of the opening of the collection box 4 squeezes the slope of the discharge gate 171 and presses it back into the scraper ring 17, sealing the inside of the scraper ring 17. When the pusher plate 39 pushes the waste oil impurities, it scrapes the filter screen 34, cleans the filter screen 34 and keeps it unobstructed, so that the waste oil and impurities can be separated more quickly, improving the collection efficiency of waste oil impurities. In addition, during the process of pushing the impurities, some waste oil will be pushed to flow through the connection between the side wall of the vessel body 1 and the opening of the collection box 4. This part of waste oil lubricates the channel that the impurities need to move before the impurities are pushed, so that the impurities can enter the collection box 4 smoothly, improving the removal efficiency of impurities in waste oil and avoiding excessive contamination of the detection device 2 by impurities, which would affect the detection data. When the scraper ring 17 enters the waste oil, the waste oil enters the scraper ring 17 from the opening formed by the swing of the filter frame 35, and is filtered and discharged from the inside of the scraper ring 17 through the filter screen 34 next to the filter frame 35.
[0024] Example 3: Based on Embodiment 2, the top of the scraper 33 is rotatably connected to a rotating shaft 41, and the rotating shaft 41 is evenly provided with unblocking blocks 42, which extend into the mesh of the filter screen 34. The side wall of the vessel body 1 is uniformly provided with intercepting plates 43, and the intercepting plates 43 penetrate the scraping ring 17.
[0025] Specific workflow: When the scraper ring 17 descends and approaches the scraper 33, the scraper 33 rotates, driving the rotating shaft 41 to rotate. The rotating shaft 41 drives the unblocking block 42 to contact the filter screen 34, squeezing and breaking up the coke and other impurities that are blocking the filter screen 34. This prevents large pieces of coke from blocking the filter screen 34, thereby keeping the filter screen 34 unobstructed, improving the filtration effect of impurities, reducing the impurities generated in waste oil, and improving the detection accuracy of waste oil distillation. When the waste oil rotates, the rotation force of the waste oil near the rotating pipe 14 is greater than that of the waste oil near the inner wall of the vessel 1. Under the combined effect of the lower rotation force and higher temperature, the waste oil near the inner wall of the vessel 1 is more prone to forming a coking layer. Therefore, by setting up an interceptor plate 43, the interceptor plate 43 blocks and forces the stagnant waste oil to flow towards the central area, while simultaneously driving the waste oil on the outer side to form turbulence. This enhances the mixing and flow velocity of the waste oil near the side wall. On the one hand, it increases the flow velocity of the waste oil on the side wall of the vessel 1, so that the coking layer thickness on the side wall of the vessel 1 is reduced under the flushing action of the waste oil, thus reducing the impact of an excessively thick coking layer on distillation. On the other hand, the interceptor plate 43 accelerates the mixing of the higher-temperature waste oil near the side wall of the vessel 1 with the lower-temperature waste oil in the center, improving the efficiency of heat transfer through the inner wall of the vessel 1, thereby improving the distillation efficiency. Furthermore, during the lifting and lowering process, the scraper ring 17 scrapes the surface of the interceptor plate 43 and the angle between the interceptor plate 43 and the side wall of the vessel body 1, cleaning the interceptor plate 43 while preventing the accumulation of impurities in dead corners. Moreover, as needed, the worker can select the shaft of the filter frame 35 that is hinged to the scraper ring 17 to contact one side of the interceptor plate 43. When the scraper ring 17 descends, the surface of the shaft of the filter frame 35 that is used for hinge contact one side of the interceptor plate 43. The shaft is subjected to friction, which causes the filter frame 35 to swing. The filter frame 35 causes the filter screen 34 to swing inward into the scraper ring 17, ensuring that the filter frame 35 rotates to open the bottom of the scraper ring 17. In addition, when the pulley 23 rolls on the side wall of the vessel body 1, for example, from the interceptor plate 43 on one side of the vessel body 1 to the interceptor plate 43 on the other side, the inspection of the side wall of the vessel body 1 is completed, so that the interceptor plate 43 can play its role without affecting the rolling of the pulley 23.
[0026] Example 4: Based on Embodiment 3, the bottom of the scraper ring 17 is provided with a dividing plate 44, the dividing plate 44 is evenly distributed in a ring, and the dividing plate 44 is located between the filter frame 35 and the side wall of the vessel body 1. The inner surface of the scraper ring 17 contacts the pulley 23; one end of the first rotating plate 15 is provided with a scraper 45, which is shaped like a back and contacts the surface of the slide rod 22 and the outer peripheral surface of the pulley 23. The top of the vessel body 1 is provided with a cleaning plate 46, and there are two cleaning plates 46. One end of the sliding rod 38 is located inside the scraper ring 17, and the other end is located outside the scraper ring 17 near the center of the vessel body 1. The probe 21 of the detection device 2 is installed at the end of the sliding rod 38 away from the scraper ring 17. The probe 21 of the detection device 2 is located between adjacent cleaning plates 46. The cleaning plates 46 are used to clean the probe 21 of the detection device 2. The probe 21 of the detection device 2 is located in the protruding part of the wavy surface of the inner ring of the scraper ring 17. When the scraper ring 17 rises to near the collection box 4, the bottom of the cleaning plate 46 is inserted into the protruding part of the wavy surface of the inner ring of the scraper ring 17 and contacts the probe 21 of the detection device 2. The cleaning plate 46 is a conventional tool with a cleaning brush for cleaning the probe 21 of the detection device 2.
[0027] Specific workflow: When a coking layer forms on the side wall of the vessel body 1, if the scraper ring 17 directly descends to contact the coking blocks, large pieces of coking blocks will be squeezed away from the side wall of the vessel body 1. These large pieces of coking blocks are not easy to enter the interior of the scraper ring 17, resulting in coking block residue. Therefore, by setting the dividing plate 44, when the scraper ring 17 descends, the dividing plate 44 first contacts the coking blocks. The sharp end of the dividing plate 44 contacts and cuts the coking blocks. Then the cut coking blocks are squeezed away from the side wall of the vessel body 1 by the bottom of the scraper ring 17, achieving the effect of breaking up the coking blocks. This makes it easier for the scraper ring 17 to collect impurities and improves the filtration effect of waste oil. During the retraction of the slide rod 22 and pulley 23, they come into contact with the scraper 45. The scraper 45 scrapes the surface of the slide rod 22 to remove adhering impurities. When the pulley 23 retracts into the first rotating plate 15, the outer circumferential surface of the pulley 23 contacts the scraper 45. When the inner ring of the scraper ring 17 contacts the pulley, the first rotating plate 15 is in a rotating state. The first rotating plate 15 drives the pulley 23 to roll on the inner ring of the scraper ring 17. The scraper 45 scrapes the outer circumferential surface of the rotating pulley 23 to remove the adhering impurities and improve the cleanliness. After the scraper ring 17 passes the pulley 23, the worker can release the slide rod 22 again, so that the cleaned pulley 23 rolls on the side wall of the cleaned vessel 1 to complete the re-inspection after cleaning and check the cleaning effect of the coking layer, thereby improving the detection accuracy of waste oil distillation and thus improving the distillation effect. The inner ring of the scraper ring 17 can also be set to a wave shape. When the scraper ring 17 contacts the pulley 23, the slide bar 22 is released, and the pulley 23 rolls on the wave-shaped inner ring surface of the scraper ring 17, so that the pulley 23 and the slide bar 22 extend and retract the first rotating rod 15 multiple times, thereby improving the cleaning effect of the scraper 45 on the slide bar 22 and the pulley 23. When the push plate 39 pushes impurities inside the scraper ring 17, the cleaning plate 46 is inserted from above into the wavy part of the scraper ring 17. The probe 21 of the detection device 2 is located between the two cleaning plates 46. The push plate 39 drives the sliding rod 38 to move, and the sliding rod 38 drives the probe 21 of the detection device 2 to move between adjacent cleaning plates 46. The cleaning plates 46 wipe and clean the probe 21, improving the cleanliness of the probe 21 of the detection device 2, thereby improving the detection accuracy. After the pusher plate 39 pushes the impurities into the collection box 4, the sliding rod 38 is affected by the spring, causing the pusher plate 39 and the probe 21 of the detection device 2 to slide and reset. The scraper ring 17 descends to the waste oil surface to continue the monitoring work. When the scraper ring 17 passes the pulley 23, since the sliding rod 38 is located inside the wavy surface of the scraper ring 17, the pulley 23 does not contact the sliding rod 38.
[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.
Claims
1. An environmentally friendly waste oil recycling device, comprising a distillation kettle, which includes a kettle body (1), a heating system (11), a transmission device (12), and a feeding / discharging device (13); characterized in that, Also includes: Rotary tube (14) is rotatably connected to the center of the vessel body (1), and the top of the rotary tube (14) is connected to the transmission device (12). The rotary tube (14) is provided with a first rotating plate (15) and a second rotating plate (16). The first rotating plate (15) is close to the bottom of the rotary tube (14), and the second rotating plate (16) is close to the middle of the rotary tube (14). The second rotating plate (16) is located above the first rotating plate (15). A scraper ring (17) is slidably connected to the inner wall of the vessel body (1), and a lifting rod (18) is provided at the top of the scraper ring (17). The top of the lifting rod (18) is connected to a first electric push rod (19) installed at the top of the vessel body (1). The detection device (2) is installed on one side of the vessel body (1), and the probe (21) of the detection device (2) is installed on the scraper ring (17). The detection device (2) detects waste oil through the probe (21). The rotating tube (14) is provided with a slide rod (22), and the slide rod (22) is located at one end of the first rotating plate (15). The slide rod (22) slides out of the first rotating plate (15) through a spring. A pulley (23) is rotatably connected to one side of the slide rod (22). The hollow interior of the rotating tube (14) is connected to the hollow interior of the first rotating plate (15). The end of the slide rod (22) away from the pulley (23) protrudes from the rotating tube (14), and one end of the slide rod (22) is above the vessel body (1). A sensor (24) is provided between the slide rod (22) and the rotating tube (14).
2. The environmentally friendly waste oil recycling device according to claim 1, characterized in that: The rotating tube (14) is fitted with a partition cover (25), and the bottom of the partition cover (25) is rotatably connected to a rotating ring (26); the partition cover (25) is uniformly provided with grooves (27), and a sliding plate (28) is slidably connected to the groove (27) by a spring; the second rotating plate (16) is slidably connected to the rotating tube (14) and passes through the sliding plate (28); the second rotating plate (16) is provided with a floating ring (3), and the top of the vessel body (1) is equipped with a second electric push rod (31), and the telescopic end of the second electric push rod (31) contacts the top of the floating ring (3) through a ball bearing; the top of the vessel body (1) is provided with an electric lifting device (32), and the electric lifting device (32) is installed on the top of the transmission device (12) to drive the transmission device (12) and the rotating tube (14) to rise and fall.
3. The environmentally friendly waste oil recycling device according to claim 2, characterized in that: The bottom of the partition cover (25) is slidably connected to a scraper (33) by a spring. One end of the scraper (33) is located inside the rotating ring (26) near the center of the vessel body (1), and the other end is located outside the rotating ring (26) near the gap between the bottom and the side wall of the vessel body (1). The scraper ring (17) has a hollow structure inside, and a filter screen (34) is provided at the bottom of the scraper ring (17). A filter frame (35) is hinged at the bottom of the scraper ring (17), and the filter screen (34) covers the filter frame (35).
4. The environmentally friendly waste oil recycling device according to claim 3, characterized in that: The top of the scraper ring (17) is slidably connected to the extrusion plate (36) by a spring, and the top of the vessel body (1) is provided with an extrusion rod (37), the bottom of which contacts the top of the extrusion plate (36).
5. The environmentally friendly waste oil recycling device according to claim 4, characterized in that: The bottom of the extrusion plate (36) is inclined. The scraper ring (17) is slidably connected to the side wall away from the vessel body (1) by a spring and a sliding rod (38) is provided at one end of the sliding rod (38). The top of the push plate (39) slides on the inclined surface at the bottom of the extrusion plate (36) and the bottom of the push plate (39) slides on the top plane of the filter frame (35). A collection box (4) is provided on the side wall of the vessel body (1), and a discharge gate (171) is hinged to the part of the scraper ring (17) corresponding to the collection box (4) by a torsion spring.
6. The environmentally friendly waste oil recycling device according to claim 3, characterized in that: The scraper (33) is rotatably connected to a rotating shaft (41) at its top, and a clearing block (42) is evenly provided on the rotating shaft (41), with the clearing block (42) extending into the mesh of the filter screen (34).
7. The environmentally friendly waste oil recycling device according to claim 3, characterized in that: The side wall of the vessel body (1) is uniformly provided with intercepting plates (43), and the intercepting plates (43) penetrate the scraping ring (17).
8. The environmentally friendly waste oil recycling device according to claim 7, characterized in that: The scraper ring (17) has a dividing plate (44) at the bottom. The dividing plate (44) is evenly distributed in a ring and is located between the filter frame (35) and the side wall of the vessel body (1).
9. The environmentally friendly waste oil recycling device according to claim 8, characterized in that: The inner surface of the scraper ring (17) contacts the pulley (23); one end of the first rotating plate (15) is provided with a scraper (45), which is shaped like a back character, and the scraper (45) contacts the surface of the sliding rod (22) and the outer peripheral surface of the pulley (23).
10. The environmentally friendly waste oil recycling device according to claim 9, characterized in that: The top of the vessel body (1) is provided with a cleaning plate (46), and there are two cleaning plates (46); one end of the sliding rod (38) is located inside the scraping ring (17), and the other end is located outside the scraping ring (17) near the center of the vessel body (1). The probe (21) of the detection device (2) is installed at the end of the sliding rod (38) away from the scraping ring (17). The probe (21) of the detection device (2) is located between adjacent cleaning plates (46). The cleaning plates (46) are used to clean the probe (21) of the detection device (2).