Distillation unit for diesel engine oil production

Abstract

This invention provides a distillation apparatus for diesel engine oil production, comprising a main body and an auxiliary mechanism. The main body includes a tank with a collection hood installed at the bottom and a screw conveyor installed at the bottom of the collection hood. The auxiliary mechanism includes a cover plate connected to the tank by bolts. A connecting pipe is rotatably inserted into the cover plate, and a stirring rod is coaxially arranged inside the connecting pipe. Scrapers are fixedly installed at both ends of the connecting pipe, with the outer side of the scrapers abutting against the inner wall of the tank. An inlet pipe and an outlet pipe are provided at the upper end of the cover plate, and a temperature sensor is installed at the bottom of the cover plate. Both the connecting pipe and the stirring rod are connected to a drive device. This invention uses scrapers to clean the residue adhering to the inner wall of the tank, avoiding the problem of reduced heat transfer efficiency caused by residue adhering to the inner wall of the tank. Combined with the collection hood and screw conveyor, the residue is collected and transported. The entire process requires no manual cleaning, is convenient and quick, and improves the efficiency of cleaning the inner wall of the tank and the efficiency of distilling and recovering waste diesel engine oil.

Description

Technical Field

[0001] This utility model relates to the field of diesel engine oil recovery technology, and in particular to a distillation device for diesel engine oil production. Background Technology

[0002] Diesel engine oil is a lubricant specifically designed for diesel engines, performing key functions such as lubrication, cleaning, heat dissipation, and sealing. It reduces wear, prevents rust and corrosion, and extends engine life. After prolonged use inside an engine, the physical and chemical properties of diesel engine oil gradually deteriorate. This is due to changes in viscosity, additive consumption, oxidative cracking of the base oil, and contamination from incomplete combustion of fuel, wear particles, moisture, and acidic substances. Ultimately, it loses its lubricating and protective capabilities, becoming waste diesel engine oil. However, the base oil components contained in waste diesel engine oil still have high recycling value. Through a series of physical and chemical regeneration processes, impurities, oxidation products, and degraded additives can be effectively removed from the waste oil, refining it into base oils or blending oil raw materials that meet certain standards.

[0003] In the regeneration process of waste diesel engine oil, distillation is a core and crucial separation step. Its purpose is to utilize the differences in boiling points among the components of the waste oil to evaporate and separate the light fuel oil, water, and target base oil fractions (distillate oils) from the heavy gums and asphaltenes. During the distillation of waste diesel engine oil, the heavy components undergo thermal cracking, polymerization, and coking under high temperatures, forming a black, viscous residue. This black residue adheres to and accumulates on the inner wall of the distillation tank, leading to decreased heat transfer efficiency, increased energy consumption, and a reduction in effective distillation volume. In existing diesel engine oil production distillation units, manual cleaning of the residue is often required during distillation. This manual cleaning process not only increases maintenance costs and the labor intensity of workers but also reduces the equipment's production efficiency and continuous operation capability. Utility Model Content

[0004] This utility model provides a distillation device for diesel engine oil production, which solves the problems of existing diesel engine oil distillation devices requiring manual cleaning of residue inside the tank, resulting in high costs, low efficiency, and negative impacts.

[0005] This utility model provides a distillation device for diesel engine oil production, including a main body and an auxiliary mechanism. The main body includes a tank, with a collection cover fixedly installed at the bottom of the tank, and a screw conveyor installed at the bottom of the collection cover. The auxiliary mechanism includes a cover plate, which is connected to the top of the tank by several bolts. A connecting pipe is rotatably inserted into the center of the cover plate. The connecting pipe has a hollow structure, and a stirring rod is coaxially arranged inside it. Scrapers are fixedly installed at both ends of the connecting pipe, with the outer side of the scraper abutting against the inner wall of the tank. A feed pipe is inserted into one side of the upper end of the cover plate, and an exhaust pipe is inserted into the other side of the upper end of the cover plate. A temperature sensor is fixedly installed on one side of the bottom end of the cover plate. The connecting pipe and the stirring rod are both connected to a drive device.

[0006] Optionally, the drive unit includes a power box fixedly mounted on the upper end of the cover plate, and an electromagnetic clutch is installed at the top of the inside of the power box.

[0007] Optionally, the top end of the connecting pipe extends through the cover plate into the interior of the power box and connects to the outer sleeve of the electromagnetic clutch, and the top end of the stirring rod extends into the interior of the power box and connects to the inner sleeve of the electromagnetic clutch.

[0008] Optionally, a drive motor is fixedly mounted on the top of the power box, and the output end of the drive motor is connected to the rotating shaft of the electromagnetic clutch.

[0009] Optionally, several slag discharge pipes are inserted at the bottom of the tank, and the bottom of each slag discharge pipe is connected to the inside of the collection hood. Each slag discharge pipe is equipped with a solenoid valve at its bottom.

[0010] Optionally, the inner wall of the tank is provided with a receiving cavity, and an induction coil is wound inside the receiving cavity.

[0011] Optionally, a number of support legs are fixedly installed on the outer side of the bottom of the tank, and the support legs are distributed circumferentially along the axis of the tank.

[0012] The beneficial effects of the distillation apparatus for diesel engine oil production provided by this utility model are as follows:

[0013] 1. Solid or semi-solid residues adhering to the inner wall of the tank are cleaned by a scraper, preventing the residue from adhering to the inner wall of the tank and causing a decrease in heat transfer efficiency. The collection hood and screw conveyor work together to improve the efficiency of collecting and transporting the residues cleaned by the scraper. The whole process does not require manual cleaning, which is convenient and quick, and improves the efficiency of cleaning the inner wall of the tank and the efficiency of distillation and recovery of waste diesel oil.

[0014] 2. The electromagnetic clutch allows for the coordinated or independent operation of the connecting pipe and the stirring rod, flexibly adapting to the stirring and cleaning needs of different stages of distillation and improving the operational flexibility of the equipment. The electromagnetic clutch enables power switching between the connecting pipe and the stirring rod, allowing the stirring rod to be driven independently for stirring or simultaneously driving the scraper for cleaning. This reduces energy consumption while ensuring clean tank walls and preventing residue buildup that could affect distillation efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1One of the three-dimensional structural schematic diagrams of the distillation apparatus for diesel engine oil production provided in the embodiments of this utility model;

[0017] Figure 2 A second three-dimensional structural schematic diagram of the distillation apparatus for diesel engine oil production provided in this embodiment of the utility model;

[0018] Figure 3 A schematic diagram of the internal structure of a distillation apparatus for producing diesel engine oil provided in an embodiment of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the stirring rod and scraper provided in an embodiment of the present utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the tank provided in an embodiment of the present utility model;

[0021] Figure 6 This is a schematic diagram of the front cross-sectional structure of the tank provided in an embodiment of the present utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1-Main body, 2-Auxiliary mechanism, 101-Tank body, 102-Collection hood, 103-Support leg, 104-Screw conveyor, 105-Containing cavity, 106-Slag discharge pipe, 107-Induction coil, 108-Solenoid valve, 201-Cover plate, 202-Power box, 203-Drive motor, 204-Air outlet pipe, 205-Feed pipe, 206-Connecting pipe, 207-Stirring rod, 208-Scraper, 209-Electromagnetic clutch. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this utility model.

[0025] like Figure 1-6As shown, this utility model provides a distillation device for diesel engine oil production, including a main body 1 and an auxiliary mechanism 2. The main body 1 includes a tank 101, a collection cover 102 is fixedly installed at the bottom of the tank 101, and a screw conveyor 104 is installed at the bottom of the collection cover 102. The auxiliary mechanism 2 includes a cover plate 201, which is connected to the top of the tank 101 by several bolts. A connecting pipe 206 is rotatably inserted at the center of the cover plate 201. The connecting pipe 206 is a hollow structure, and a stirring rod 207 is coaxially arranged inside it. Scrapers 208 are fixedly installed at both ends of the connecting pipe 206. The outer side of the scraper 208 abuts against the inner wall of the tank 101. A feed pipe 205 is inserted into one side of the upper end of the cover plate 201, and an exhaust pipe 204 is inserted into the other side of the upper end of the cover plate 201. A temperature sensor is fixedly installed on one side of the bottom end of the cover plate 201. The connecting pipe 206 and the stirring rod 207 are both connected to a drive device.

[0026] The main structure of the distillation unit for diesel engine oil production consists of two parts: the main body 1 and the auxiliary mechanism 2. The tank 101 in the main body 1 is the primary site for diesel engine oil distillation. A collection hood 102 and a screw conveyor 104 work together to collect the residue. In the auxiliary mechanism 2, the connecting pipe 206 drives the scraper 208 to rotate, cleaning the residue adhering to the inner wall of the tank 101. The stirring rod 207 rotates to agitate the diesel engine oil, ensuring more uniform heating and improving distillation efficiency. The rotation of the connecting pipe 206 and the stirring rod 207 is driven by a drive unit. The cover plate 201 seals the tank 101, and the feed pipe 205 on it adds material to the tank 101. The vent pipe 204 discharges the distilled product. A temperature sensor detects the temperature inside the tank 101 to ensure stable distillation.

[0027] When using the distillation apparatus for diesel engine oil production, first connect the outlet pipe 204 to the collection device (this collection device is the condensate collection device used during distillation, which is well known to those skilled in the art and will not be described in detail here). Then, add the waste diesel engine oil to be distilled into the tank 101 through the feed pipe 205. After adding, close the feed pipe 205 to ensure the apparatus is sealed. Then, heat the tank 101 (heating can be done using a jacket, water bath, oil bath, etc.), and monitor the temperature inside the tank 101 with a temperature sensor to ensure that the temperature inside the tank 101 meets the distillation requirements. While heating the tank 101, the connecting pipe 206 is rotated by the drive device, which in turn drives the scraper 208 to rotate. The outer side of the scraper 208 abuts against the inner wall of the tank 101, and the residue adhering to the inner wall of the tank 101 can be scraped off during rotation. Meanwhile, the stirring rod 207 rotates continuously under the drive of the drive device, and stirs the waste diesel oil to ensure that it is heated evenly.

[0028] The steam generated during distillation is discharged from the outlet pipe 204 to the collection device for further processing. After distillation, the residue is discharged from the bottom of the tank 101 to the collection hood 102 for collection and then transported for processing by the screw conveyor 104.

[0029] The distillation apparatus for diesel engine oil production provided by this utility model uses a scraper 208 to clean solid or semi-solid residues adhering to the inner wall of the tank 101, avoiding the problem of reduced heat transfer efficiency caused by residues adhering to the inner wall of the tank 101. The collection cover 102 and the screw conveyor 104 work together to improve the efficiency of collecting and transporting the residues cleaned by the scraper 208. The whole process does not require manual cleaning, which is convenient and quick, and improves the efficiency of cleaning the inner wall of the tank 101 and the efficiency of distillation and recovery of waste diesel engine oil.

[0030] like Figure 2-4 As shown, further, a power box 202 is fixedly installed on the upper end of the cover plate 201, and an electromagnetic clutch 209 is installed at the top inside the power box 202. Further, the top end of the connecting pipe 206 extends through the cover plate 201 into the interior of the power box 202 and connects to the outer sleeve of the input end of the electromagnetic clutch 209; the top end of the stirring rod 207 extends into the interior of the power box 202 and connects to the inner sleeve of the electromagnetic clutch 209. Further, a drive motor 203 is fixedly installed at the top of the power box 202, and the output end of the drive motor 203 is connected to the rotating shaft of the electromagnetic clutch 209.

[0031] The drive motor 203 is used to drive the connecting pipe 206, stirring rod 207, and scraper 208 located inside the tank 101. The power box 202 is used to provide mounting protection for the transmission components.

[0032] An electromagnetic clutch 209 is a mechanical device that uses electromagnetic force to transmit or cut off torque. Its structure generally consists of friction plates, a drive shaft, a winding coil, an inner sleeve, an outer sleeve, and an armature. In operation, when the winding coil is not energized, the rotation of the drive shaft only drives the inner sleeve. When energized, the winding coil generates magnetic flux, creating a magnetic force that attracts the armature, pressing the friction plates together, thus allowing torque to be transmitted between the outer and inner sleeves. The above describes the basic working principle of the electromagnetic clutch 209, which is common knowledge and will not be described in detail with accompanying diagrams.

[0033] In this invention, the drive motor 203 drives the rotating shaft of the electromagnetic clutch 209, i.e., the transmission shaft described in the above principle introduction, to rotate. When the coil of the electromagnetic clutch 209 is not energized, the drive motor 203 drives the transmission shaft of the electromagnetic clutch 209 to rotate. The transmission shaft only drives the inner sleeve and the stirring rod 207 connected to the inner sleeve to rotate. The stirring rod 207 stirs the waste diesel engine oil in the tank 101, making it evenly heated. When the coil of the electromagnetic clutch 209 is energized, the drive motor 203 drives the transmission shaft of the electromagnetic clutch 209 to rotate. The transmission shaft simultaneously drives the inner sleeve, the outer sleeve, and the stirring rod 207 and the connecting pipe 206 connected to them to rotate. At this time, the stirring rod 207 stirs the waste diesel engine oil, and the connecting pipe 206 drives the scraper 208 to clean the residue adhering to the inner wall of the tank 101.

[0034] The electromagnetic clutch 209 controls the linkage or independent operation of the connecting pipe 206 and the stirring rod 207, flexibly adapting to the stirring and cleaning needs of different stages of distillation and improving the operational flexibility of the equipment. The electromagnetic clutch 209 realizes the power switching between the connecting pipe 206 and the stirring rod 207, which can drive the stirring rod 207 to stir independently or drive the scraper 208 to clean simultaneously, reducing energy consumption while ensuring the cleanliness of the tank wall and preventing residue adhesion from affecting distillation efficiency.

[0035] like Figure 2 , Figure 5 and Figure 6 As shown, further, a number of slag discharge pipes 106 are inserted at the bottom of the tank body 101. The bottom of each slag discharge pipe 106 is connected to the inside of the collection hood 102. Each slag discharge pipe 106 is equipped with a solenoid valve 108 at its bottom.

[0036] The residue removed by the scraper 208 can enter the collection hood 102 through the slag discharge pipe 106, ensuring that the residue is collected and concentrated, facilitating the conveyor 104 for transport and processing. The solenoid valve 108 controls the opening and closing of the slag discharge pipe 106 to prevent material leakage during the distillation process.

[0037] like Figure 6 As shown, the inner wall of the tank 101 is provided with a receiving cavity 105, and an induction coil 107 is wound inside the receiving cavity 105.

[0038] The induction coil 107 generates electromagnetic induction to heat the tank 101 within the accommodating cavity 105, ensuring uniform heating of the diesel engine oil with high heating efficiency. This facilitates precise control of the distillation temperature and improves the purity of the diesel engine oil distillation.

[0039] like Figure 3 As shown, further, a number of support legs 103 are fixedly installed on the outer side of the bottom end of the tank body 101, and the number of support legs 103 are distributed circumferentially along the axis of the tank body 101.

[0040] The support legs 103 evenly support the tank body 101, ensuring the equipment is placed stably and preventing the tank body 101 from shifting due to vibration during the distillation process, thus ensuring production safety and the service life of the equipment.

[0041] The complete working principle of the distillation apparatus for diesel engine oil production provided by this utility model is as follows:

[0042] like Figure 1-6 As shown, when using the distillation unit for diesel engine oil production, first, the tank 101 is placed stably on the workstation using the support leg 103, and then the unit is inspected. During inspection, ensure that the connection between the cover plate 201 and the tank 101 is secure and sealed, ensure the seal between the vent pipe 204 and the collection device, and ensure that the solenoid valve 108 is in the closed position. After all preparations are completed, add the waste diesel engine oil to be distilled into the tank 101 through the feed pipe 205. After adding, close the feed pipe 205 to ensure the unit is sealed.

[0043] Then, the induction coil 107 inside the accommodating cavity 105 is energized, generating electromagnetic induction to heat the tank 101. During heating, a temperature sensor monitors the temperature inside the tank 101 to ensure it meets the distillation requirements. Simultaneously, the drive motor 203 rotates the electromagnetic clutch 209. In the initial stage of distillation, there is little or no residue adhering to the inner wall of the tank 101. At this time, the coil of the electromagnetic clutch 209 is not energized. The drive motor 203 rotates the drive shaft of the electromagnetic clutch 209, which only rotates the inner sleeve and the stirring rod 207 connected to it. The stirring rod 207 stirs the waste diesel oil inside the tank 101, ensuring even heating. After distilling the waste diesel oil for a period of time, the amount of impurities adhering to the inner wall of the tank 101 increases, affecting the heat transfer efficiency. At this time, the coil of the electromagnetic clutch 209 is energized, and the drive motor 203 drives the transmission shaft of the electromagnetic clutch 209 to rotate. The transmission shaft simultaneously drives the inner sleeve, outer sleeve, and the stirring rod 207 and connecting pipe 206 connected to them to rotate. At this time, the stirring rod 207 stirs the waste diesel engine oil, and the connecting pipe 206 drives the scraper 208 to clean the residue adhering to the inner wall of the tank 101.

[0044] The steam generated during distillation is discharged from the outlet pipe 204 to the collection device for further processing. After distillation is completed, the solenoid valve 108 is opened, and the residue enters the collection hood 102 from the slag discharge pipe 106 at the bottom of the tank 101, and is then transported and processed by the screw conveyor 104.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A distillation apparatus for producing diesel engine oil, characterized in that, It includes the main body (1) and auxiliary mechanisms (2); The main body (1) includes a tank (101), a collection cover (102) is fixedly installed at the bottom end of the tank (101), and a screw conveyor (104) is installed at the bottom end of the collection cover (102). The auxiliary mechanism (2) includes a cover plate (201), which is connected to the top of the tank (101) by several bolts. A connecting pipe (206) is rotatably inserted at the center of the cover plate (201). The connecting pipe (206) is hollow and has a stirring rod (207) coaxially arranged inside. Scrapers (208) are fixedly installed at both ends of the connecting pipe (206). The outer side of the scraper (208) abuts against the inner wall of the tank (101). A feed pipe (205) is inserted on one side of the upper end of the cover plate (201), and an air outlet pipe (204) is inserted on the other side of the upper end of the cover plate (201). A temperature sensor is fixedly installed on one side of the bottom end of the cover plate (201). Both the connecting pipe (206) and the stirring rod (207) are connected to the driving device.

2. The distillation apparatus for producing diesel oil according to claim 1, wherein The drive device includes a power box (202) fixedly installed at the upper end of the cover plate (201), and an electromagnetic clutch (209) is installed at the top inside the power box (202).

3. The distillation apparatus for producing diesel oil according to claim 2, wherein The top end of the connecting pipe (206) extends through the cover plate (201) into the interior of the power box (202) and connects to the outer sleeve of the electromagnetic clutch (209). The top end of the stirring rod (207) extends into the interior of the power box (202) and connects to the inner sleeve of the electromagnetic clutch (209).

4. The distillation apparatus for producing diesel oil according to claim 2, wherein A drive motor (203) is fixedly installed on the top of the power box (202), and the output end of the drive motor (203) is connected to the rotating shaft of the electromagnetic clutch (209) for transmission.

5. The distillation apparatus for producing diesel oil according to claim 1, wherein The bottom end of the tank (101) is provided with several slag discharge pipes (106), the bottom end of each slag discharge pipe (106) is connected to the inside of the collection hood (102), and each slag discharge pipe (106) is equipped with an electromagnetic valve (108).

6. The distillation apparatus for diesel engine oil production according to claim 1, characterized in that, The inner wall of the tank (101) is provided with a receiving cavity (105), and an induction coil (107) is wound inside the receiving cavity (105).

7. The distillation apparatus for diesel engine oil production according to claim 1, characterized in that, A plurality of support legs (103) are fixedly installed on the outer side of the bottom end of the tank (101), and the plurality of support legs (103) are distributed circumferentially along the axis of the tank (101).

Images