Waste lubricating oil regeneration distillation device

Abstract

The invention relates to the technical field of lubricating oil processing, in particular to a waste lubricating oil regeneration distillation device, which comprises a tank body, a jacket is arranged on the outer side of the tank body, a heating cavity is formed between the jacket and the outer wall of the tank body, and the heating cavity adopts sectional heating and comprises a first section of heating cavity, a second section of heating cavity and a third section of heating cavity which are sequentially arranged from bottom to top, a first steam inlet branch pipe, a second steam inlet branch pipe and a third steam inlet branch pipe are correspondingly connected to the upper end of each section of heating cavity, a first steam outlet branch pipe, a second steam outlet branch pipe and a third steam outlet branch pipe are correspondingly connected to the lower end of each section of heating cavity, and a stirring mechanism is arranged in the tank body and comprises a stirring shaft, a stirring rod and a stirring motor. A partition plate in the tank body divides the tank body into a heat recovery cavity and a distillation cavity, and the bottom of the partition plate is communicated with a heat collection opening. The system achieves the functions of high efficiency, energy conservation, oil film formation prevention, heat recovery, preheating and the like, has remarkable economic benefits and social benefits, and is suitable for regeneration treatment of various waste lubricating oil.

Description

Technical Field

[0001] The invention relates to the technical field of waste lubricating oil processing, in particular to a waste lubricating oil regeneration distillation device. Background Art

[0002] Lubricating oil is an oily liquid applied to some friction parts of mechanical equipment. It has the functions of reducing friction, avoiding heat, and preventing machine wear. Lubricating oil is generally a product of fractionated petroleum. Due to the large daily consumption of lubricating oil and the fact that petroleum is a non-renewable energy source, it is necessary to use a regeneration distillation device to distill the used waste lubricating oil to discharge the water in the waste lubricating oil, so as to facilitate the subsequent recycling work. With the development of industry, the treatment and recycling of waste lubricating oil have become more and more important. Traditional waste lubricating oil regeneration methods mainly include physical separation, chemical treatment and distillation. Among them, the distillation method is to evaporate the water and other low-boiling point components in the waste lubricating oil by heating, thereby realizing the regeneration of the waste lubricating oil. However, when the traditional distillation device is distilling, since the surface of the waste lubricating oil is prone to produce an oil film, the oil film will prevent the water in the waste lubricating oil from evaporating, thereby reducing the efficiency of the waste lubricating oil distillation; furthermore, the traditional distillation device usually fills the entire heating jacket with heating medium to heat the tank body. At this time, if the amount of oil is small, it will cause heat waste. Summary of the invention

[0003] In order to solve the above technical problems, the present invention specifically adopts the following technical solutions.

[0004] A waste lubricating oil regeneration distillation device is designed, comprising a tank body, a jacket is arranged on the outer side of the tank body, a heating chamber is formed between the jacket and the outer wall of the tank body, the heating chamber is a segmented heating, comprising a first segment heating chamber, a second segment heating chamber, and a third segment heating chamber which are sequentially arranged from bottom to top, and the upper end of each segment heating chamber is respectively connected with a steam inlet branch pipe 1, a steam inlet branch pipe 2, and a steam inlet branch pipe 3, the steam inlet branch pipe 1 and the steam inlet branch pipe 3 are connected with a steam inlet main pipe after being collected with the steam inlet branch pipe 2, and an air inlet valve is respectively arranged on the steam inlet branch pipe 1, the steam inlet branch pipe 2, and the steam inlet branch pipe 3, and the lower end of each segment heating chamber is respectively connected with a steam outlet branch pipe 1, a steam outlet branch pipe 2, and a steam outlet branch pipe 3, the steam outlet branch pipe 2 and the steam outlet branch pipe 3 are respectively collected with the steam outlet branch pipe 1, and a steam outlet valve is respectively arranged on the steam outlet branch pipe 1, the steam outlet branch pipe 2, and the steam outlet branch pipe 3;

[0005] A stirring mechanism is provided in the tank body, the stirring mechanism comprises a stirring shaft rotatably arranged in the tank body, a stirring rod arranged on the stirring shaft, and a stirring motor arranged on the top of the tank body, wherein the output shaft of the stirring motor is coaxially arranged with the stirring shaft;

[0006] A partition is provided at the upper end of the tank body, and the partition divides the tank body into a heat recovery chamber at the upper end and a distillation chamber at the lower end. A heat collection port is connected to the bottom of the partition, and a feed pipe extending to the bottom of the partition is provided at the top of the tank body. The stirring shaft and the stirring rod are hollow structures that are internally connected, and the stirring shaft rotates and passes through the partition, and a plurality of air holes are opened on the stirring shaft and the stirring rod, and a discharge port is provided at the bottom of the tank body.

[0007] Preferably, a pair of staggered baffles are provided on the inner wall of the heat collection port.

[0008] Preferably, a heat insulating sleeve is connected to the top of the tank body, a heat insulating block is rotatably arranged inside the heat insulating sleeve, and the output shaft and the stirring shaft of the stirring motor are respectively connected to the upper and lower ends of the heat insulating block.

[0009] Preferably, a preheating sleeve is provided on the outer side of the feed pipe in the heat recovery chamber, an air collecting hole is provided on the preheating sleeve, and a drain pipe extending out of the tank body is connected to the bottom of the preheating sleeve.

[0010] Preferably, an oil film dividing mechanism is provided between the partition and the stirring rod, and the oil film dividing mechanism includes a threaded section arranged on the stirring shaft, a dividing plate threadably matched with the threaded section, and a dividing hole opened on the dividing plate. Mounting plates are respectively fixed on the upper and lower sides of the dividing plate on the inner walls on both sides of the tank body, and a guide rod is provided between the two mounting plates, and the guide rod movably passes through the dividing plate.

[0011] Preferably, the stirring rods are crossed in pairs and then staggered on the stirring shaft.

[0012] Preferably, an arc-shaped stirring plate with its inner arc surface facing upward is provided at the bottom of the stirring shaft, the stirring plate is a hollow structure, and its interior is connected to the interior of the stirring shaft, and air holes are provided on the stirring plate.

[0013] Preferably, a plurality of disturbance plates are respectively provided on the inner walls of the tank body.

[0014] Preferably, connecting rods are fixed on the inner walls on both sides of the tank body between the stirring plate and the last group of stirring rods, and the stirring shaft rotates through the connecting rods.

[0015] The beneficial effects of the present invention are:

[0016] 1. The segmented heating design in the present invention can flexibly adjust the heating area according to the amount of waste lubricating oil in the tank body, avoiding unnecessary heat waste, significantly improving energy utilization efficiency and reducing operating costs.

[0017] 2. The combined use of the stirring mechanism and the oil film dividing mechanism effectively prevents the formation of an oil film on the surface of the waste lubricating oil, ensures that water vapor can fully contact the waste lubricating oil, and improves the distillation efficiency; and the design of the disturbance plate and the hollow structure of the stirring shaft and stirring rod also enhances the heat exchange efficiency between the waste lubricating oil and the hot steam, shortens the distillation time, and improves the production efficiency.

[0018] 3. The heat recovery system not only recovers the hot steam generated during the distillation process, but also uses this heat to preheat the newly incoming waste lubricating oil, further saving energy and improving the overall thermal efficiency.

[0019] 4. The whole device has a compact structure, and the layout of each component is reasonable, which is easy to manufacture and maintain. In particular, the design of the oil film separation mechanism allows the water in the waste lubricating oil to evaporate more fully, improving the regeneration quality.

[0020] 5. The equipment is equipped with a variety of safety measures, such as precise control of the air inlet and outlet valves, to ensure the safety of operation. At the same time, the design of the insulation sleeve and insulation block reduces heat loss and improves the safety and reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the structure of the present invention;

[0022] Figure 2 yes Figure 1 A is an enlarged structural diagram;

[0023] Figure 3 yes Figure 1 The enlarged structural diagram at B in FIG.

[0024] Figure 4 yes Figure 1 The enlarged structural diagram at C in FIG.

[0025] The numbers in the figure are: 1 stirring motor, 2 tank body, 3 feeding pipe, 4 partition, 5 drain pipe, 6 guide rod, 7 jacket, 8 steam inlet branch pipe three, 9 third section heating chamber, 10 steam inlet branch pipe two, 11 second section heating chamber, 12 steam inlet branch pipe one, 13 first section heating chamber, 14 connecting rod, 15 stirring plate, 16 discharge pipe, 17 steam outlet branch pipe three, 18 steam outlet branch pipe two, 19 steam outlet branch pipe one, 20 stirring rod, 21 disturbance plate, 22 stirring shaft, 23 steam inlet valve, 24 steam outlet valve, 25 mounting plate, 26 distribution plate, 27 distribution hole, 28 automatic pressure relief valve, 29 air hole, 30 heat recovery chamber, 31 preheating sleeve, 32 air collecting hole, 33 insulation sleeve, 34 insulation block, 35 baffle, 36 heat collection port. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0027] Example 1

[0028] A waste lubricating oil regeneration distillation device, such as Figures 1 to 4 As shown, it includes a tank body 2, a jacket 7 is provided on the outer side of the tank body 2, a heating chamber is formed between the jacket 7 and the outer wall of the tank body 2, and the heating chamber is a segmented heating chamber, including a first segment heating chamber 13, a second segment heating chamber 11, and a third segment heating chamber 9 which are arranged from bottom to top, and the upper end of each segment heating chamber is respectively connected with a steam inlet branch pipe 12, a steam inlet branch pipe 2 10, and a steam inlet branch pipe 3 8, the steam inlet branch pipe 12 and the steam inlet branch pipe 3 8 are connected with the steam inlet main pipe after being collected with the steam inlet branch pipe 2 10, and an air inlet valve is respectively provided on the steam inlet branch pipe 12, the steam inlet branch pipe 2 10, and the steam inlet branch pipe 3 8, The lower ends of the hot chamber are respectively connected with steam outlet branch pipe 1 19, steam outlet branch pipe 2 18, and steam outlet branch pipe 3 17. Steam outlet branch pipe 2 18 and steam outlet branch pipe 3 17 are respectively connected with steam outlet branch pipe 1 19 and then connected with a steam outlet main pipe. Steam outlet valves 24 are respectively provided on steam outlet branch pipe 1 19, steam outlet branch pipe 2 18, and steam outlet branch pipe 3 17. The segmented heating method can determine how many air inlet valves to open according to the amount of oil in the tank body 2, so as to introduce hot steam into the heating chamber, thereby avoiding heat waste. By opening the air outlet valves on different air outlet pipes, the steam after heat exchange in the corresponding heating chamber can be discharged.

[0029] A stirring mechanism is provided in the tank body 2, and the stirring mechanism includes a stirring shaft 22 rotatably provided in the tank body 2, a stirring rod 20 provided on the stirring shaft 22, and a stirring motor 1 provided on the top of the tank body 2. The output shaft of the stirring motor 1 is coaxially arranged with the stirring shaft 22. Furthermore, in order to prevent heat loss, a heat insulating sleeve 33 is connected to the top of the tank body 2, and a heat insulating block 34 is rotatably provided in the heat insulating sleeve 33. The output shaft of the stirring motor 1 and the stirring shaft 22 are respectively connected to the upper and lower ends of the heat insulating block 34. Under the electric power of the stirring motor 1, the stirring shaft 22 and the electric stirring rod 20 stir the waste lubricating oil in the tank body 2, thereby preventing the formation of an oil film on the surface of the waste lubricating oil, which makes it impossible for water vapor to be distilled out.

[0030] A partition 4 is provided at the upper end of the tank body 2, and the partition 4 divides the tank body 2 into a heat recovery chamber 30 at the upper end and a distillation chamber at the lower end. A heat collection port 36 is connected to the bottom of the partition 4, and the steam distilled in the tank body 2 is recovered into the heat recovery chamber 30 through the heat collection port 36. A pair of staggered baffles 35 are provided on the inner wall of the heat collection port 36, and the baffles 35 can prevent the waste lubricating oil in the tank body 2 from entering the heat recovery chamber 30.

[0031] A feed pipe 3 extending to the bottom of the partition 4 is provided on the top of the tank body 2, a preheating sleeve 31 is provided on the outer side of the feed pipe 3 in the heat recovery chamber 30, an air collecting hole 32 is provided on the preheating sleeve 31, and a drain pipe 5 extending out of the tank body 2 is connected to the bottom of the preheating sleeve 31. Part of the hot steam recovered into the heat recovery chamber 30 enters the preheating sleeve 31 through the air collecting hole 32 to preheat the waste lubricating oil in the feed pipe 3, and water droplets formed after part of the steam condenses upon encountering the feed pipe 3 are gathered at the bottom of the preheating sleeve 31 and discharged from the drain pipe 5. In order to facilitate the discharge of water droplets, the drain pipe 5 can be arranged at an angle.

[0032] In order to further enhance the heat exchange efficiency between the waste lubricating oil and the hot steam, a plurality of disturbance plates 21 are respectively provided on the inner wall of the tank body 2 .

[0033] In order to reinforce the stirring shaft 22 , connecting rods 14 are fixed between the stirring plates 15 and the last set of stirring rods 20 on the inner walls of both sides of the tank body 2 , and the stirring shaft 22 rotates through the connecting rods 14 .

[0034] A plurality of air holes 29 are provided on the stirring shaft 22 and the stirring rod 20. The heat of the heat recovery chamber 30 enters the stirring shaft 22 through the air holes 29, and enters the tank body 2 again through the air holes 29 on the stirring rod 20 during the stirring process, thereby improving the distillation efficiency. The stirring shaft 22 and the stirring rod 20 are hollow structures that are connected internally, and the stirring shaft 22 rotates and passes through the partition 4. The stirring rods 20 are staggered on the stirring shaft 22 after crossing each other. An arc-shaped stirring plate 15 with an inner arc facing upward is provided at the bottom of the stirring shaft 22. The stirring plate 15 is a hollow structure. The stirring plate 15 with an inner arc facing upward can drive the waste lubricating oil at the bottom upward, thereby making the temperature of the waste lubricating oil inside the tank body 2 more uniform. The interior of the stirring plate 15 is connected to the interior of the stirring shaft 22, and air holes 29 are provided on the stirring plate 15. A discharge port is provided at the bottom of the tank body 2.

[0035] An oil film dividing mechanism is provided between the partition plate 4 and the stirring rod 20, and the oil film dividing mechanism includes a threaded section provided on the stirring shaft 22, a material dividing plate 26 threadably matched with the threaded section, and a material dividing hole 27 provided on the material dividing plate 26. Mounting plates 25 are respectively fixed on the upper and lower sides of the material dividing plate 26 on the inner walls on both sides of the tank body 2, and a guide rod 6 is provided between the two mounting plates 25, and the guide rod 6 movably penetrates the material dividing plate 26. The stirring motor 1 is a forward and reverse motor, which drives the material dividing plate 26 to continuously move up and down. The material dividing plate 26 moving up and down can prevent the waste lubricating oil from forming an oil seal at the material dividing hole 27, affecting the material dropping of the material dividing hole 27, and dividing the waste lubricating oil falling from the feed inlet through the material dividing hole 27, thereby dividing the oil film in the waste lubricating oil, so that the water in the waste lubricating oil can be evaporated more fully.

[0036] When the present invention is used, waste lubricating oil is added into the tank body 2 through the feed pipe 3, the corresponding steam inlet valve 23 is opened according to the amount of oil, the stirring motor 1 is started, and the stirring shaft 22 is driven to rotate forward or reversely. At this time, the material distribution plate 26 moves up and down along the threaded section on the stirring shaft 22. At this time, the waste lubricating oil flows on the material distribution plate 26, and after the oil film is divided through the material distribution hole 27, it enters the tank body 2, and the waste lubricating oil in the tank body 2 is stirred by the stirring rod 20 and the stirring plate 15, so that the waste lubricating oil is heated more evenly, and the hot steam generated by the distillation of the waste lubricating oil is heated more uniformly. The steam enters the heat recovery chamber 30 through the heat collection port 36, and part of the recovered hot steam enters the stirring shaft 22 through the air hole 29, and part of the steam enters the preheating sleeve 31 through the air collecting hole 32 to preheat the feed pipe 3. At this time, the water droplets condensed on the wall of the feed pipe 3 fall on the bottom of the preheating sleeve 31 and are then discharged through the drain pipe 5; and the hot steam passing through the stirring shaft 22 and the stirring rod 20 again participates in the contact with the waste lubricating oil in the tank body 2, further improving the heating efficiency, and finally the lubricating oil distilled from the water is discharged through the discharge pipe 16.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A waste lubricating oil regeneration distillation device, characterized in that: It comprises a tank body, a jacket is arranged on the outside of the tank body, a heating chamber is formed between the jacket and the outer wall of the tank body, the heating chamber is a segmented heating, comprising a first segment heating chamber, a second segment heating chamber, and a third segment heating chamber which are arranged in sequence from bottom to top, and the upper end of each segment heating chamber is respectively connected with a steam inlet branch pipe 1, a steam inlet branch pipe 2, and a steam inlet branch pipe 3, the steam inlet branch pipe 1 and the steam inlet branch pipe 3 are connected with a steam inlet main pipe after being collected with the steam inlet branch pipe 2, and an air inlet valve is respectively arranged on the steam inlet branch pipe 1, the steam inlet branch pipe 2, and the steam inlet branch pipe 3, and the lower end of each segment heating chamber is respectively connected with a steam outlet branch pipe 1, a steam outlet branch pipe 2, and a steam outlet branch pipe 3, the steam outlet branch pipe 2 and the steam outlet branch pipe 3 are respectively collected with the steam outlet branch pipe 1, and a steam outlet valve is respectively arranged on the steam outlet branch pipe 1, the steam outlet branch pipe 2, and the steam outlet branch pipe 3; A stirring mechanism is provided in the tank body, the stirring mechanism comprises a stirring shaft rotatably arranged in the tank body, a stirring rod arranged on the stirring shaft, and a stirring motor arranged on the top of the tank body, wherein the output shaft of the stirring motor is coaxially arranged with the stirring shaft; A partition is provided at the upper end of the tank body, and the partition divides the tank body into a heat recovery chamber at the upper end and a distillation chamber at the lower end. A heat collection port is connected to the bottom of the partition, and a feed pipe extending to the bottom of the partition is provided at the top of the tank body. The stirring shaft and the stirring rod are hollow structures that are internally connected, and the stirring shaft rotates and passes through the partition, and a plurality of air holes are opened on the stirring shaft and the stirring rod, and a discharge port is provided at the bottom of the tank body.

2. The waste lubricating oil regeneration distillation device according to claim 1, characterized in that: A pair of staggered baffles are provided on the inner wall of the heat collection port.

3. The waste lubricating oil regeneration distillation device according to claim 1, characterized in that: A heat-insulating sleeve is connected to the top of the tank body, a heat-insulating block is rotatably arranged in the heat-insulating sleeve, and the output shaft and the stirring shaft of the stirring motor are respectively connected to the upper and lower ends of the heat-insulating block.

4. The waste lubricating oil regeneration distillation device according to claim 1, characterized in that: A preheating sleeve is provided on the outer side of the feed pipe in the heat recovery chamber, an air collecting hole is provided on the preheating sleeve, and a drain pipe extending out of the tank body is connected to the bottom of the preheating sleeve.

5. The waste lubricating oil regeneration distillation device according to claim 1, characterized in that: An oil film dividing mechanism is provided between the partition and the stirring rod, and the oil film dividing mechanism includes a threaded section arranged on the stirring shaft, a dividing plate threadably matched with the threaded section, and a dividing hole opened on the dividing plate. Mounting plates are respectively fixed on the upper and lower sides of the dividing plate on the inner walls on both sides of the tank body, and a guide rod is provided between the two mounting plates, and the guide rod movably passes through the dividing plate.

6. The waste lubricating oil regeneration distillation device according to claim 1, characterized in that: The stirring rods are crossed in pairs and are staggeredly arranged on the stirring shaft.

7. The waste lubricating oil regeneration distillation device according to claim 1, characterized in that: An arc-shaped stirring plate with its inner arc surface facing upward is provided at the bottom of the stirring shaft. The stirring plate is a hollow structure, and its interior is connected with the interior of the stirring shaft. Air holes are provided on the stirring plate.

8. The waste lubricating oil regeneration distillation device according to claim 1, characterized in that: A plurality of disturbance plates are respectively arranged on the inner walls of the tank body.

9. The waste lubricating oil regeneration distillation device according to claim 1, characterized in that: Connecting rods are fixed on the inner walls of both sides of the tank body between the stirring plate and the last group of stirring rods, and the stirring shaft rotates through the connecting rods.

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