Uniformly heated waste oil regeneration device

Abstract

The invention relates to the technical field of waste oil regeneration, in particular to a uniformly heated waste oil regeneration device. The device comprises an oil conveying pipe, an inner bin plate and an oil accumulation plate. Heat separated out by steam flowing from bottom to top through the steam channel can be transmitted to the inner end of the isolation cavity, waste lubricating oil flowing downwards is evenly preheated, water with the low boiling point and residues are separated out, floating objects are prevented from being formed, separation of the water and the residues is hindered, and the service life of the waste lubricating oil is prolonged. Meanwhile, the preheated waste lubricating oil is subjected to secondary heating treatment through heat separated out by the steam channel, and due to the fact that the oil temperatures of all areas of the preheated waste lubricating oil are the same, the heat transfer efficiency is higher during secondary heating, the lower cavity can be evenly heated in the downward moving process, the heating effect of the waste lubricating oil is further improved, and the service life of the waste lubricating oil is prolonged. The residues with different boiling points are collected in different areas, so that the residues separated out in different areas are prevented from being mixed.

Description

Technical Field

[0001] This invention relates to the field of waste oil regeneration technology, and more specifically, to a waste oil regeneration device with uniform heating. Background Technology

[0002] In practical applications, the production and processing of lubricating oil is complex, involving numerous equipment and significant investment. Lubricating oil production is hard-won, and waste lubricating oil recycling not only conserves scarce resources but also prevents further environmental pollution. In the past, the collected waste lubricating oil was disposed of manually, with some being directly dumped or buried. This resulted in a considerable portion flowing into rivers, lakes, and seas, causing the death of large numbers of marine plants and animals. Buried waste oil polluted soil and groundwater. A large portion of waste lubricating oil was also used as fuel, producing fumes containing metal oxides and incompletely burned, carcinogenic polycyclic aromatic hydrocarbons, causing enormous waste and exacerbating environmental pollution. Therefore, waste lubricating oil recycling is a beneficial method for resource utilization.

[0003] Traditional waste lubricating oil treatment processes mainly involve the following steps: 1. Hydrogenate the waste lubricating oil and perform flash evaporation to remove some of the impurities from the waste oil; 2. Add a protective agent and a metal catalyst to react with it; 3. Other substances with different boiling points are precipitated from the waste lubricating oil through heat treatment.

[0004] In the traditional heat treatment process, a steam pipe is introduced into the waste lubricating oil, and a non-contact heating method is used to heat the waste lubricating oil using residual heat. However, due to the limited contact area between the steam pipe and the waste lubricating oil, the waste lubricating oil near the steam pipe has a higher heating efficiency, and its temperature rises faster than that of the far end. This causes the waste lubricating oil in this part to precipitate residues first. When the heat energy is transferred to the far end, the high-boiling-point residues near the pipe also begin to precipitate, which easily mixes with the low-boiling-point residues that have just precipitated at the far end. This requires secondary separation of the precipitated residue exhaust gas in the later stage. At the same time, during the heating process, a layer of floating matter will precipitate on the surface of the long-stagnant waste lubricating oil, which will block the upward precipitation of water vapor and residual exhaust gas, preventing them from leaving the steam tank in time.

[0005] To address the aforementioned problems, there is an urgent need for a waste oil regeneration device that provides uniform heating. Summary of the Invention

[0006] The purpose of this invention is to provide a waste oil regeneration device with uniform heating to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, a waste oil regeneration device with uniform heating is provided, including a heating tank, a waste oil storage bin for storing waste oil, and an evaporation bin disposed at the bottom of the heating tank. The inner end of the evaporation bin is provided with a steam bin plate for supplying steam. An oil collection plate is disposed at the middle position of the inner end of the heating tank. An oil conveying pipe is provided through the top of the oil collection plate, and a pair of hydraulic rods are provided at the bottom of the oil conveying pipe to drive it to move up and down. An inner bin plate is disposed at the top of the oil collection plate, and a steam channel is connected between the inner bin plate, the oil collection plate, and the steam bin plate. The inner compartment plate is sleeved on the outside of the oil transport pipe, and an isolation chamber for preheating waste oil is formed between the inner side of the inner compartment plate, the outer side of the oil transport pipe, and the top of the oil collection plate. The inner end of the oil transport pipe is provided with an upper chamber and a lower chamber. An upper sealing column is connected between the top of the upper chamber and the bottom of the waste oil storage tank. When the oil transport pipe moves to the highest point, the upper sealing column is pushed synchronously to connect the waste oil storage tank and the upper chamber, guiding the waste oil at the inner end of the upper sealing column to the inner end of the upper chamber. During the downward movement, the relatively upward-moving upper sealing column carries out the waste oil, allowing it to slowly overflow from the upper chamber port to the inner end of the isolation chamber. The heat energy released by the steam flowing upward at the inner end of the steam channel uniformly heats the overflowing waste oil. Both sides of the oil transport pipe near the bottom end are provided with leakage holes that are connected to the inner end of the lower chamber. During the downward movement of the oil transport pipe, the bottom of the two leakage hole ports come into contact with the waste oil surface, and the preheated waste oil is introduced into the inner end of the lower chamber. Simultaneously, the waste oil moves with the oil transport pipe to the inner side of the steam chamber plate, and is subjected to secondary uniform heating treatment by the heat energy released by the steam flowing upward at the inner end of the steam channel.

[0008] As a further improvement to this technical solution, the steam channel includes a steam guiding groove, an oil leakage groove, and a flow guiding groove. The steam guiding groove is located at the inner end of the inner chamber plate, and upper steam pipes are provided on both sides of the inner chamber plate near the middle. One end of the upper steam pipe extends out of the heating tank, and the other end of the upper steam pipe is connected to the inner end of the steam guiding groove to guide the flowing steam out of the inner end of the steam channel. The oil leakage groove is located at the top of the oil accumulation plate, and the flow guiding groove is located at the inner end of the steam chamber plate. The steam guiding groove, the oil leakage groove, and the flow guiding groove are connected. External steam pipes connected to the flow guiding groove are provided on both sides of the bottom end of the steam chamber plate to guide external steam into the inner end of the flow guiding groove.

[0009] As a further improvement to this technical solution, oil and gas discharge pipes are provided on both sides of the top of the inner compartment plate. One end of the oil and gas discharge pipe extends out of the outside of the heating tank, and the other end of the oil and gas discharge pipe is connected to the isolation chamber to discharge the waste gas generated by heating to the inner end of the isolation chamber.

[0010] As a further improvement to this technical solution, a ring is fixedly provided at the bottom of the oil accumulation plate. The ring is sleeved on the outside of the oil transport pipe, and a lower steam pipe is provided on both sides of the ring. When the leak hole moves to be flush with the port of the lower steam pipe, the lower steam pipe remains in a conductive state with it, so as to guide the waste gas generated by secondary heating out of the inner end of the lower chamber. The other end of the lower steam pipe extends out of the inner end of the heating tank for exporting the waste gas generated by secondary heating.

[0011] As a further improvement to this technical solution, the upper sealing column is composed of T-shaped blocks spliced ​​together from top to bottom, and the upper sealing column is slidably connected to the inner end of the waste oil storage tank. The upper chamber and the lower chamber are separated by a partition. The bottom port of the waste oil storage tank is aligned with the top port of the oil transport pipe, and the cross-sectional dimension of the bottom port of the waste oil storage tank is smaller than that of the top port of the oil transport pipe.

[0012] As a further improvement to this technical solution, a lower sealing column is provided at the bottom of the inner end of the lower chamber. The lower sealing column has a T-shaped cross-section and is slidably connected to the inner end of the lower chamber. Its bottom end extends out of the inner end of the lower chamber. A bottom cylinder is provided at the bottom of the evaporation chamber. The top end of the bottom cylinder is aligned with the bottom end of the lower chamber, and the cross-sectional dimension of the top end of the bottom cylinder is larger than the cross-sectional dimension of the bottom end of the oil transport pipe.

[0013] As a further improvement to this technical solution, a top groove is provided at the top of the oil accumulation plate, and the top groove has a conical structure.

[0014] As a further improvement to this technical solution, the leak hole has an inclined structure, the leak hole is inclined towards the top of the oil pipe, and the port of the leak hole is flush with the inner wall of the top groove.

[0015] As a further improvement to this technical solution, a sealing ring plate is slidably provided at the inner end of the steam guiding groove. The steam guiding groove consists of an upper groove and a lower groove. The cross-sectional size of the sealing ring plate is smaller than that of the lower groove, and a gap for steam flow is generated between the sealing ring plate and the lower groove. A notch is provided at the bottom end of the steam guiding groove. The cross-sectional sizes of the sealing ring plate, the upper groove, and the notch are the same. The top end of the sealing ring plate is fixedly connected to the top end of the oil conveying pipe and moves up and down synchronously with the oil conveying pipe to adjust the position of the sealing ring plate at the inner end of the steam guiding groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: In this uniformly heated waste oil regeneration device, the heat generated by the steam flowing upward through the steam channel is transferred to the inner end of the isolation chamber, uniformly preheating the downward-flowing waste lubricating oil. This process precipitates low-boiling-point water and residues, preventing the formation of floating matter that would hinder the precipitation of water and residues. Simultaneously, the heat generated through the steam channel provides a secondary heating treatment to the preheated waste lubricating oil. Since the oil temperature is uniform in all areas of the preheated waste lubricating oil, the heat transfer efficiency is higher during the secondary heating, ensuring uniform heating of the lower chamber during the downward movement. This further improves the heating effect of the waste lubricating oil and allows for the separate collection of residues with different boiling points in different zones, preventing the mixing of residues precipitated in the same zone. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of a portion at point A; Figure 4 This is one of the overall structural planar schematic diagrams of the present invention; Figure 5 This is a second schematic diagram of the overall structure of the present invention; Figure 6 This is the third schematic diagram of the overall structure of the present invention; Figure 7 This is the fourth schematic diagram of the overall structure of the present invention; Figure 8 This is a schematic diagram showing the connection between the inner compartment plate, the oil collection plate, and the steam compartment plate of the present invention.

[0018] The meanings of the labels in the diagram are as follows: 10. Heating tank; 110. Waste oil storage tank; 111. Upper sealing column; 120. Top cover; 121. Oil inlet pipe; 130. Evaporation chamber; 140. Bottom cylinder; 150. Oil collection plate; 151. Oil leakage trough; 160. Lower steam exhaust pipe; 20. Oil pipe; 210. Upper chamber; 220. Lower chamber; 221. Leakage hole; 222. Lower sealing post; 230. Hydraulic rod; 30. Inner compartment plate; 310. Steam guide trough; 311. Notch; 320. Oil and gas discharge pipe; 330. Upper steam discharge pipe; 340. Oil filter hopper; 350. Sealing ring plate; 40. Steam chamber plate; 410. External steam pipe. Detailed Implementation

[0019] The technical solutions in 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] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] Please see Figures 1-3 As shown, a waste oil regeneration device with uniform heating is provided, including a heating tank 10, a waste oil storage bin 110 for storing waste oil, and an evaporation bin 130 disposed at the bottom of the heating tank 10. A steam bin plate 40 for supplying steam is disposed at the inner end of the evaporation bin 130. An oil collection plate 150 is disposed at the middle position of the inner end of the heating tank 10. An oil conveying pipe 20 is disposed through the top of the oil collection plate 150, and a pair of hydraulic rods 230 for driving the oil conveying pipe 20 to move up and down are disposed at the bottom of the oil conveying pipe 20. An inner bin plate 30 is disposed at the top of the oil collection plate 150, and a steam channel is connected between the inner bin plate 30, the oil collection plate 150, and the steam bin plate 40. The inner compartment plate 30 is fitted on the outside of the oil transport pipe 20, and an isolation chamber for preheating waste oil is formed between the inner side of the inner compartment plate 30, the outside of the oil transport pipe 20, and the top of the oil collection plate 150. The inner end of the oil transport pipe 20 is provided with an upper chamber 210 and a lower chamber 220. An upper sealing column 111 is connected between the top of the upper chamber 210 and the bottom of the waste oil storage tank 110. When the oil transport pipe 20 moves to the highest point, the upper sealing column 111 is pushed synchronously to connect the waste oil storage tank 110 and the upper chamber 210, guiding the waste oil at the inner end of the upper sealing column 111 to the inner end of the upper chamber 210. During the downward movement, the relatively upward-moving upper sealing column 111 carries out the waste oil, allowing it to slowly overflow from the port of the upper chamber 210 to the inner end of the isolation chamber. The heat energy released by the steam flowing upward at the inner end of the steam channel uniformly heats the overflowing waste oil. The oil conveying pipe 20 has two holes 221 on both sides near the bottom end, which are connected to the inner end of the lower chamber 220. During the downward movement of the oil conveying pipe 20, the bottom of the two holes 221 come into contact with the waste oil surface, and the preheated waste oil is introduced into the inner end of the lower chamber 220. The waste oil moves with the oil conveying pipe 20 to the inner side of the steam chamber plate 40, and is then subjected to secondary uniform heating by the heat energy released by the steam flowing upward at the inner end of the steam channel.

[0022] During the heating process of waste lubricating oil, firstly, the waste lubricating oil to be treated is introduced into the inner end of the waste oil storage chamber 110 through the oil inlet pipe 121 set in the top cover 120 at the top of the waste oil storage chamber 110. The waste lubricating oil to be treated is stored in the inner end of the waste oil storage chamber 110, and steam is continuously introduced into the steam channel through the steam chamber plate 40. The steam flows from bottom to top in the steam channel. At this time, the hydraulic rod 230 is activated, and the oil conveying pipe 20 is moved vertically upward through the hydraulic rod 230. The upper sealing column 111 is pushed to move, opening the waste oil storage chamber 110 and the upper chamber 210. The waste lubricating oil stored in the inner end of the waste oil storage chamber 110 will flow into the inner end of the upper chamber 210, completing the feeding of waste lubricating oil. The hydraulic rod 230 drives the oil pipe 20 to move downward, causing the upper sealing column 111 to gradually detach from the inner end of the upper chamber 210. During its relative upward movement, the waste lubricating oil in the inner end of the upper chamber 210 is pushed out and overflows downward along the top port of the upper chamber 210. The waste lubricating oil is filtered through the oil filter hopper 340 set in the inner end of the inner compartment plate 30 and flows downward along the inner end of the isolation chamber. At this time, the heat generated by the steam flowing from bottom to top in the steam channel will be transferred to the inner end of the isolation chamber to uniformly preheat the downward flowing waste lubricating oil, precipitating out water with low boiling point and residues, preventing the formation of floating matter, and hindering the precipitation of water and residues. After preheating, the preheated waste lubricating oil will accumulate at the bottom of the isolation chamber. At this time, the hydraulic rod 230 continues to drive the oil pipe 20 downward, causing the drain hole 221 to gradually approach the surface of the waste lubricating oil until the port of the drain hole 221 is flush with the surface of the waste lubricating oil. At this time, the preheated waste lubricating oil will be discharged into the inner end of the lower chamber 220 through the port of the drain hole 221 and move down synchronously with the lower chamber 220 to the inner end of the steam chamber plate 40. At this time, higher temperature steam is introduced into the inner end of the steam chamber plate 40 and flows through the steam channel. The heat released by the steam will perform secondary heating treatment on the preheated waste lubricating oil. Since the oil temperature of each area of ​​the preheated waste lubricating oil is the same, the heat transfer efficiency is higher during secondary heating, so that the lower chamber 220 can be uniformly heated during the downward movement, further improving the heating effect of the waste lubricating oil. Residues with different boiling points are collected in separate areas to prevent the mixing of different precipitated residues in the same area.

[0023] In addition, by Figure 8 As shown, the steam channel includes a steam guide trough 310, an oil leakage trough 151, and a flow guide trough. The steam guide trough 310 is located at the inner end of the inner chamber plate 30, and upper steam pipes 330 are provided on both sides of the inner chamber plate 30 near the middle. One end of the upper steam pipe 330 extends out of the heating tank 10, and the other end of the upper steam pipe 330 is connected to the inner end of the steam guide trough 310 to guide the flowing steam out of the inner end of the steam channel. The oil leakage trough 151 is located at the top of the oil collection plate 150, and the flow guide trough is located at the inner end of the steam chamber plate 40. The steam guide trough 310, the oil leakage trough 151, and the flow guide trough are connected. External steam pipes 410 are provided on both sides of the bottom end of the steam chamber plate 40 and are connected to the flow guide trough to guide external steam into the inner end of the flow guide trough. Oil and gas drain pipes 320 are provided on both sides of the top of the inner compartment plate 30. One end of the oil and gas drain pipe 320 extends out of the outside of the heating tank 10, and the other end of the oil and gas drain pipe 320 is connected to the isolation chamber to discharge the waste gas generated by heating to the inner end of the isolation chamber. A ring is fixedly installed at the bottom of the oil collection plate 150. The ring is sleeved on the outside of the oil transport pipe 20, and a lower steam pipe 160 is provided on both sides of the ring. When the leakage hole 221 moves to be flush with the port of the lower steam pipe 160, the lower steam pipe 160 remains in a conductive state to guide the waste gas precipitated by secondary heating out of the inner end of the lower chamber 220. The other end of the lower steam pipe 160 extends out of the inner end of the heating tank 10 to discharge the waste gas precipitated by secondary heating.

[0024] In practical use, during the preheating process, by Figure 4 As shown, external steam is first supplied to the inner end of the steam channel through external steam pipes 410 on both sides. The steam is guided to the inner end of the guide groove through the external steam pipes 410, and then transmitted to the inner end of the oil leakage groove 151 through the guide groove. After passing through the oil leakage groove 151, it is transmitted to the inner end of the steam guide groove 310. Then, the flowing steam is discharged through the lower steam pipes 160 on both sides of the inner chamber plate 30. During this process, the waste lubricating oil overflowing from the port of the upper chamber 210 flows from top to bottom along the isolation chamber, while the steam in the inner end of the steam guide groove 310 flows from bottom to top. Through the inner wall of the inner chamber plate 30, the heat is transferred to the inner end of the isolation chamber, and the flowing waste lubricating oil is uniformly heat-conducted. This ensures that the waste lubricating oil overflowing at each stage can receive sufficient heat, and the continuously flowing waste lubricating oil cannot form condensed floating matter. This allows the precipitated waste gas to be easily discharged from the interior of the waste lubricating oil and flow towards the top of the isolation chamber. The precipitated waste gas is then discharged through the oil and gas discharge pipes 320 on both sides of the top of the inner chamber plate 30. From 5- Figure 7As shown, the solid arrows indicate the direction of steam flow, the dashed arrows indicate the direction of the released waste gas flow, and the hollow arrows indicate the direction of movement of the oil conveying pipe 20. After the preheating work is completed, the preheated waste lubricating oil overflowing from the inner end of the upper chamber 210 will accumulate at the bottom of the inner end of the isolation chamber, that is, at the top of the oil collection plate 150. During this process, the oil conveying pipe 20 continues to move downward until the two ends of the drain hole 221 are aligned with the corresponding ports of the lower steam pipe 160. At this time, the lower chamber 220 is connected to the lower steam pipe 160 through the drain hole 221, so that the waste gas released from the secondary heating can be discharged through the lower steam pipe 160. This is because the waste lubricating oil contains other waste oils and impurities with different boiling points. When the secondary heating is performed, the temperature of the added steam will increase. At this time, the waste gas with different boiling points is discharged separately through the oil and gas drain pipe 320 and the lower steam pipe 160, so as to avoid the waste gas with different boiling points from mixing in the same pipe and requiring secondary separation later.

[0025] Furthermore, the upper sealing column 111 is composed of T-shaped blocks spliced ​​together from top to bottom, and the upper sealing column 111 is slidably connected to the inner end of the waste oil storage chamber 110. The upper chamber 210 and the lower chamber 220 are separated by a partition block. The bottom port of the waste oil storage chamber 110 is aligned with the top port of the oil transport pipe 20, and the cross-sectional dimension of the bottom port of the waste oil storage chamber 110 is smaller than that of the top port of the oil transport pipe 20. A lower sealing column 222 is provided at the bottom of the inner end of the lower chamber 220. The lower sealing column 222 has a T-shaped cross section and is slidably connected to the inner end of the lower chamber 220. Its bottom end extends out of the inner end of the lower chamber 220. A bottom cylinder 140 is provided at the bottom of the evaporation chamber 130. The top end of the bottom cylinder 140 is aligned with the bottom end of the lower chamber 220, and the cross-sectional dimension of the top end of the bottom cylinder 140 is larger than the cross-sectional dimension of the bottom end of the oil transport pipe 20. In practical use, during the process of introducing waste lubricating oil, by Figure 5 As shown, the bottom cylinder 140 drives the oil conveying pipe 20 to move upward. The inner end of the oil conveying pipe 20 slides along the outer side of the bottom end of the upper sealing column 111, so that the bottom end of the upper sealing column 111 gradually approaches the partition until the two contact. The partition drives the upper sealing column 111 to move vertically upward. At this time, the top end of the oil conveying pipe 20 is completely fitted into the bottom end of the waste oil storage chamber 110. During the upward movement of the upper sealing column 111, a gap will be generated between it and the inner wall of the waste oil storage chamber 110, so that the waste lubricating oil stored in the inner end of the waste oil storage chamber 110 flows into the inner end of the upper chamber 210 along the gap, completing the introduction of waste lubricating oil. During the process of draining waste lubricating oil, the waste lubricating oil located at the inner end of the lower chamber 220 is heated a second time and then continues to move downwards via the hydraulic rod 230. Figure 7As shown, at this time, the lower sealing column 222 is in contact with the inner wall of the bottom cylinder 140 and is driven by the reaction force provided by the inner wall of the bottom cylinder 140 to slide in the opposite direction along the inner end of the lower chamber 220 and form a gap with the inner end of the lower chamber 220, so that the waste lubricating oil after secondary heating is introduced into the inner end of the bottom cylinder 140 and collected and treated centrally through the bottom cylinder 140. It is worth noting that the weight generated by the lower sealing column 222 and the upper sealing column 111 is much greater than the buoyancy generated by the waste lubricating oil. When there is no external force pushing, the upper sealing column 111 is always in contact with the inner wall of the bottom end of the waste oil storage chamber 110, blocking the port of the waste oil storage chamber 110, and the lower sealing column 222 is always in contact with the inner wall of the bottom end of the lower chamber 220, blocking the port of the bottom end of the lower chamber 220. This ensures that both the waste oil storage chamber 110 and the lower chamber 220 are in a sealed state, preventing leakage.

[0026] During the process of the oil pipe 20 moving down to connect the lower chamber 220 and the bottom cylinder 140, the leak hole 221 moves down synchronously with the oil pipe 20, so that the port of the leak hole 221 is misaligned with the port of the lower steam pipe 160. At this time, the leak hole 221 moves to the inner end of the ring near the bottom and is sealed by the inner wall of the ring. At this time, there is no need to carry out heating work to prevent continuous steam discharge from causing waste.

[0027] Furthermore, the top of the oil accumulation plate 150 is provided with a top groove, which has a conical structure; The leak hole 221 has an inclined structure, and the leak hole 221 is inclined towards the top of the oil pipe 20, and the port of the leak hole 221 is flush with the inner wall of the top groove.

[0028] In practical use, because waste lubricating oil is a viscous liquid, it flows slowly on a plane and generates a large frictional force, causing some waste lubricating oil to adhere to the top of the oil collection plate 150. This results in a low efficiency of discharging the preheated waste lubricating oil. A top groove is opened at the top of the oil collection plate 150 to collect the preheated waste lubricating oil. The top groove has a conical structure, which causes the collected waste lubricating oil to flow downward. When the drain hole 221 moves with the oil pipe 20 to the bottom of the top groove, the port of the drain hole 221 is flush with the inner wall of the top groove. The collected waste lubricating oil is no longer restrained by the inner wall of the top groove and will be guided into the inner end of the lower chamber 220 through the drain hole 221. The potential energy generated by the height difference of the conical surface is used to accelerate the flow speed of the waste lubricating oil, improve the efficiency of waste lubricating oil introduction, and at the same time reduce the frictional resistance between the waste lubricating oil and the contact surface, thus reducing the amount of waste lubricating oil residue.

[0029] Specifically, by Figures 2-3As shown, a sealing ring plate 350 is slidably provided at the inner end of the steam guiding groove 310. The steam guiding groove 310 consists of an upper groove and a lower groove. The cross-sectional dimension of the sealing ring plate 350 is smaller than that of the lower groove, and a gap for steam flow is generated between the sealing ring plate 350 and the lower groove. A notch 311 is provided at the bottom end of the steam guiding groove 310. The cross-sectional dimensions of the sealing ring plate 350, the upper groove, and the notch 311 are the same. The top end of the sealing ring plate 350 is fixedly connected to the top end of the oil conveying pipe 20 and moves up and down synchronously with the oil conveying pipe 20 to adjust the position of the sealing ring plate 350 at the inner end of the steam guiding groove 310.

[0030] In practical use, during the external steam supply process, the sealing ring plate 350 is at its lowest point, and the lower sealing column 222 is in contact with the inner wall of the bottom cylinder 140. At this time, the bottom end of the sealing ring plate 350 is located inside the notch 311, blocking the channel between the steam guide groove 310 and the oil leakage groove 151. At this time, the steam flowing in from the inner end of the external steam pipe 410 will gradually fill the entire inner end of the external steam pipe 410 and the oil leakage groove 151, making the amount of steam at each position at the bottom end of the sealing ring plate 350 uniform until the oil conveying pipe 20 moves upward. At this time, the sealing ring plate 350 moves upward synchronously with the oil conveying pipe 20. The steam accumulated at the inner end of the external steam pipe 410 and the oil leakage groove 151 flows evenly into the inner end of the steam guide groove 310 and is discharged through the upper steam pipes 330 on both sides. This makes the amount of steam flowing upward in each area of ​​the inner end of the steam guide groove 310 uniform, ensuring that the waste lubricating oil overflowing from different positions can receive the same amount of heat, further improving its uniform heating effect.

[0031] 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 preferred examples and are not intended to limit 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. A waste oil regeneration device with uniform heating, comprising a heating tank (10), a waste oil storage bin (110) for storing waste oil, and an evaporation bin (130) disposed at the bottom end of the heating tank (10), wherein a steam supply plate (40) is disposed at the inner end of the evaporation bin (130), characterized in that: An oil collection plate (150) is provided at the middle of the inner end of the heating tank (10). An oil conveying pipe (20) is provided through the top of the oil collection plate (150), and a pair of hydraulic rods (230) are provided at the bottom of the oil conveying pipe (20) to drive it to move up and down. An inner chamber plate (30) is provided at the top of the oil collection plate (150), and a steam channel is connected between the inner chamber plate (30), the oil collection plate (150), and the steam chamber plate (40). The inner compartment plate (30) is sleeved on the outside of the oil transport pipe (20), and an isolation chamber for preheating waste oil is formed between the inner side of the inner compartment plate (30), the outer side of the oil transport pipe (20) and the top of the oil collection plate (150); The inner end of the oil transport pipe (20) is provided with an upper chamber (210) and a lower chamber (220). An upper sealing column (111) is connected between the top of the upper chamber (210) and the bottom of the waste oil storage bin (110). When the oil transport pipe (20) moves to the highest point, the upper sealing column (111) is pushed synchronously to connect the waste oil storage bin (110) and the upper chamber (210), guiding the waste oil at the inner end of the upper sealing column (111) to the inner end of the upper chamber (210). During the downward movement, the waste oil is carried out by the relatively upward-moving upper sealing column (111), so that it slowly overflows from the port of the upper chamber (210) to the inner end of the isolation chamber. The heat energy released by the steam flowing upward at the inner end of the steam channel uniformly heats the overflowing waste oil. The oil transport pipe (20) has two drain holes (221) on both sides near the bottom end, which are connected to the inner end of the lower chamber (220). During the downward movement of the oil transport pipe (20), the bottom of the two drain holes (221) contacts the waste oil surface, and the preheated waste oil is introduced into the inner end of the lower chamber (220). It moves along with the oil transport pipe (20) to the inner side of the steam chamber plate (40) and is subjected to secondary uniform heating by the heat energy released by the steam flowing upward at the inner end of the steam channel.

2. The waste oil regeneration device with uniform heating according to claim 1, characterized in that: The steam channel includes a steam guide groove (310), an oil leakage groove (151), and a flow guide groove. The steam guide groove (310) is located at the inner end of the inner chamber plate (30), and upper steam pipes (330) are provided on both sides of the inner chamber plate (30) near the middle position. One end of the upper steam pipe (330) extends out of the outer end of the heating tank (10), and the other end of the upper steam pipe (330) is connected to the inner end of the steam guide groove (310) to guide the flowing steam out of the inner end of the steam channel. The oil leakage groove (151) is located at the top of the oil accumulation plate (150), and the flow guide groove is located at the inner end of the steam chamber plate (40). The steam guide groove (310), the oil leakage groove (151), and the flow guide groove are connected. External steam pipes (410) are provided on both sides of the bottom end of the steam chamber plate (40) and are connected to the flow guide groove to guide external steam into the inner end of the flow guide groove.

3. The waste oil regeneration device with uniform heating according to claim 2, characterized in that: Oil and gas drain pipes (320) are provided on both sides of the top of the inner compartment plate (30). One end of the oil and gas drain pipe (320) extends out of the outside of the heating tank (10), and the other end of the oil and gas drain pipe (320) is connected to the isolation chamber to discharge the waste gas generated by heating to the inner end of the isolation chamber.

4. The waste oil regeneration device with uniform heating according to claim 1, characterized in that: A ring is fixedly installed at the bottom of the oil collection plate (150). The ring is sleeved on the outside of the oil transport pipe (20). A lower steam pipe (160) is installed on both sides of the ring. When the leak hole (221) moves to be flush with the port of the lower steam pipe (160), the lower steam pipe (160) is in a conductive state with it, so as to guide the waste gas generated by secondary heating out of the inner end of the lower chamber (220). The other end of the lower steam pipe (160) extends out of the inner end of the heating tank (10) for exporting the waste gas generated by secondary heating.

5. The waste oil regeneration device with uniform heating according to claim 1, characterized in that: The upper sealing column (111) is composed of T-shaped blocks spliced ​​together from top to bottom, and the upper sealing column (111) is slidably connected to the inner end of the waste oil storage chamber (110). The upper chamber (210) and the lower chamber (220) are separated by a partition. The bottom port of the waste oil storage chamber (110) is aligned with the top port of the oil transport pipe (20), and the cross-sectional dimension of the bottom port of the waste oil storage chamber (110) is smaller than that of the top port of the oil transport pipe (20).

6. The waste oil regeneration device with uniform heating according to claim 5, characterized in that: The lower chamber (220) is provided with a lower sealing column (222) at the bottom of its inner end. The lower sealing column (222) has a T-shaped cross section and is slidably connected to the inner end of the lower chamber (220). Its bottom end extends out of the inner end of the lower chamber (220). The evaporation chamber (130) is provided with a bottom cylinder (140) at its bottom end. The top end of the bottom cylinder (140) is aligned with the bottom end of the lower chamber (220), and the cross-sectional dimension of the top end of the bottom cylinder (140) is larger than the cross-sectional dimension of the bottom end of the oil transport pipe (20).

7. The waste oil regeneration device with uniform heating according to claim 1, characterized in that: The top of the oil accumulation plate (150) has a top groove, which is a conical structure.

8. The waste oil regeneration device with uniform heating according to claim 7, characterized in that: The leak hole (221) has an inclined structure, the leak hole (221) is inclined towards the top of the oil pipe (20), and the port of the leak hole (221) is flush with the inner wall of the top groove.

9. The waste oil regeneration device with uniform heating according to claim 2, characterized in that: A sealing ring plate (350) is slidably provided at the inner end of the steam guide groove (310). The steam guide groove (310) is composed of an upper groove and a lower groove. The cross-sectional size of the sealing ring plate (350) is smaller than that of the lower groove, and a gap for steam flow is generated between the sealing ring plate (350) and the lower groove. A notch (311) is provided at the bottom end of the steam guide groove (310). The cross-sectional size of the sealing ring plate (350), the upper groove, and the notch (311) are the same. The top end of the sealing ring plate (350) is fixedly connected to the top end of the oil pipe (20) and moves up and down synchronously with the oil pipe (20) to adjust the position of the sealing ring plate (350) at the inner end of the steam guide groove (310).

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