Waste mineral oil blending and preheating equipment

Abstract

The present application relates to the field of mixing equipment, and in particular to a waste mineral oil blending and preheating device, comprising a blending tank and an agitator disposed within the blending tank, the agitator comprising a rotating shaft and a stirring blade, the blending tank being provided with a fixed cylinder, the rotating shaft being hollow and rotatably sleeved on the exterior of the fixed cylinder, the fixed cylinder being provided with a spiral blade fixedly connected to the rotating shaft, the fixed cylinder being provided with a circulation hole located below the rotating shaft, the stirring blade being rotatably connected to the rotating shaft, and the rotation axis of the stirring blade being perpendicular to the rotation axis of the rotating shaft. The present application has the effect of expanding the scope of application of the blending and preheating device.

Description

Technical Field

[0001] The present application relates to the technical field of mixing equipment, and in particular to a waste mineral oil blending and preheating device. Background Art

[0002] Waste mineral oil refers to mineral oil that has been contaminated by pollution sources and is no longer usable. For example, the lubricating oil used in the lubrication system of mechanical equipment will generate high temperatures during the use of the mechanical equipment, causing the lubricating oil to undergo thermal decomposition, producing gum and coke, and ultimately rendering the lubricating oil useless. Due to environmental protection requirements, waste mineral oil cannot be discharged directly. Therefore, waste mineral oil is usually processed and refined to extract useful substances from the waste mineral oil and achieve its reuse. A common method for treating waste mineral oil is flash distillation. Since waste mineral oil is produced in various ways, some solid particles such as metal powder and gravel are present in the waste mineral oil. Therefore, it is necessary to filter the impurities in the waste mineral oil. In order to improve the filtration efficiency, it is necessary to add some chemical agents to the waste mineral oil and stir it evenly to accelerate precipitation. For example, the patent document with publication number: CN218047775U discloses a high-efficiency waste mineral oil solvent recovery device. It mainly includes a cylinder, an agitator and a heater. The cylinder is provided with a feed port, and the waste mineral oil and chemical agents enter the cylinder from the feed port. The waste mineral oil is then heated by a heater and stirred by an agitator to mix the waste mineral oil evenly.

[0003] However, in the actual processing of waste mineral oil, the viscosity of different batches of waste mineral oil varies. The resistance encountered by the agitator when stirring waste mineral oil of different viscosities varies, so different equipment specifications are often required to mix waste mineral oils of different viscosities. In summary, traditional equipment for blending waste mineral oil cannot adjust the resistance encountered by the agitator according to the viscosity of the waste mineral oil, making it limited in practical production activities. Summary of the Invention

[0004] In order to adjust the force applied to the agitator so as to facilitate the blending of waste mineral oils of different viscosities and expand the scope of application of the blending equipment, the present application provides a waste mineral oil blending and preheating equipment.

[0005] The waste mineral oil blending and preheating equipment provided in this application adopts the following technical solution:

[0006] A waste mineral oil blending and preheating device comprises a blending tank and an agitator arranged inside the blending tank, the agitator comprising a rotating shaft and a stirring blade, a fixed cylinder is provided inside the blending tank, the rotating shaft is hollow inside, the rotating shaft is rotatably sleeved on the outside of the fixed cylinder, a spiral blade is provided inside the fixed cylinder, and the spiral blade is fixedly connected to the rotating shaft; a circulation hole is provided on the fixed cylinder, the circulation hole is located below the rotating shaft, the stirring blade is rotatably connected to the rotating shaft, and the rotation axis of the stirring blade is perpendicular to the rotation axis of the rotating shaft.

[0007] By adopting the above technical solution, the stirring blade is rotatably connected to the rotating shaft, and the rotating stirring blade can change the angle between the stirring blade and the ground. When the stirring blade is parallel to the ground, the shear force of the stirring blade on the waste mineral oil is the strongest, and the resistance encountered by the stirring blade is relatively small. When the stirring blade is perpendicular to the ground, the resistance encountered during the process of the stirring blade being driven by the rotating shaft is the greatest. In actual production, the angle of the stirring blade can be adjusted according to the viscosity of the waste mineral oil, so that the load of the motor used to drive the rotating shaft is within a reasonable range, extending the service life of the motor and expanding the scope of application of the blending equipment. At the same time, a spiral blade is provided inside the fixed cylinder, and under the action of the spiral blade, the waste mineral oil in the fixed cylinder can move in the vertical direction. Specifically, the waste mineral oil located outside the fixed cylinder enters the fixed cylinder through the circulation hole and is then discharged from the top of the fixed cylinder, thereby circulating and improving the stirring effect of the waste mineral oil. At the same time, the heat generated by the relative rotation between the rotating shaft and the fixed cylinder can heat the waste mineral oil.

[0008] Optionally, a conical surface is provided on the outer side wall of the fixed cylinder, and the conical surface is inclined in a vertically upward direction toward its own axis, and a matching surface that fits with the conical surface is provided on the inner side wall of the rotating shaft.

[0009] By adopting this technical solution, the upper end of the tapered surface is tilted toward its own axis, and the rotating shaft is sleeved outside the fixed cylinder. Under the influence of the rotating shaft's own weight, the mating surface can continuously align with the tapered surface. At the same time, the tapered surface and the mating surface cooperate to achieve a rotational connection between the rotating shaft and the fixed cylinder. The concentricity of the tapered surface reduces the shaking of the rotating shaft during rotation and improves the stability of the rotating shaft during rotation.

[0010] Optionally, an adjustment component is provided on the rotating shaft, and the adjustment component includes an adjustment block and a rotating column. The rotating column is a cylindrical structure, and the rotating column rotates around its own axis and is connected to the rotating shaft. The stirring blade is installed on the rotating column, and the adjustment block is connected to the rotating shaft by sliding radially along the rotating shaft. A sliding hole is provided on the adjustment block, and the adjustment block is sleeved on the outside of the rotating column. The sliding of the adjustment block can drive the rotating column to rotate.

[0011] By adopting the above technical solution, the stirring blade is mounted on the rotating column. The rotation of the rotating column can drive the stirring blade to rotate, thus realizing the rotational connection between the stirring blade and the rotating shaft. At the same time, the adjustment block is slidably connected to the rotating shaft, and the sliding adjustment block drives the rotation of the rotating column to realize the rotation control of the rotating column.

[0012] Optionally, a spiral groove is provided on the side wall of the rotating column, and a cylindrical driving column is provided on the side wall of the sliding hole, with one end of the driving column fixed on the adjustment block and the other end inserted into the spiral groove.

[0013] By adopting the above technical solution, the sliding adjustment block drives the driving column to move in the spiral groove. Under the action of the spiral groove and the driving column, the rotating column can be driven to rotate, thereby realizing the driving of the rotating column.

[0014] Optionally, the adjustment assembly further includes a synchronization disk, which is rotatably sleeved on the outside of the rotating shaft. A planar thread is provided on the side of the synchronization disk close to the adjustment block, and a thread groove corresponding to the planar thread is provided on the adjustment block to engage with the planar thread.

[0015] By adopting the above technical solution, the synchronous disk and multiple adjustment blocks are connected through flat threads, which on the one hand realizes the synchronous driving of multiple adjustment blocks, and on the other hand realizes self-locking between the synchronous disk and the adjustment blocks, thereby improving the stability of the rotating column during the waste mineral oil blending process.

[0016] Optionally, a plurality of tooth grooves are evenly arranged on the synchronization disk around its own rotation axis, and a gear is rotatably connected to the rotation shaft, and the gear is engaged with the tooth grooves.

[0017] By adopting the above technical solution, the synchronous disk is driven to rotate by the gear, which makes it easy to drive the synchronous disk during the actual production process.

[0018] Optionally, the rotating column and the stirring blade are connected via a universal shaft, and the stirring blade can rotate around an axis that is perpendicular to the axis of the rotating column and parallel to the ground.

[0019] By adopting the above technical solution, the universal shaft enables the stirring blades to move in a vertical plane, thereby adjusting the position of the stirring blades in stirring the waste mineral oil. Moreover, during the actual production process, some stirring blades can be rotated upward and others can be rotated downward according to actual conditions, thereby more comprehensively stirring the waste mineral oil in the blending tank, improving the mixing efficiency and mixing effect of the waste mineral oil and chemical agents.

[0020] Optionally, a reducing assembly is provided on the rotating shaft, and the reducing assembly includes a sliding block, a pull rod and a ring. The ring is rotatably mounted on the stirring blade, and the sliding block is slidably connected to the rotating shaft in a direction parallel to the rotating shaft. The pull rod is provided between the ring and the sliding block, and the two ends of the pull rod are rotatably connected to the sliding block and the ring respectively. The sliding of the sliding block can drive the stirring blade to rotate.

[0021] By adopting the above technical solution, the rotatable connection between the collar and the stirring blade not only realizes the connection between the pull rod and the stirring blade, but also adapts to the rotation of the stirring blade caused by the rotation of the rotating column. At the same time, the sliding block and the collar are connected by the pull rod. By sliding the sliding block, the stirring blade can be driven to rotate, realizing the rotation adjustment of the stirring blade in the vertical plane.

[0022] Optionally, the diameter-changing assembly further includes a driving ring, which is connected to the sliding block, and the rotation of the driving ring can drive the sliding block to slide in the vertical direction.

[0023] By adopting the above technical solution, the multiple sliding blocks are driven to move by the driving ring, thereby achieving synchronous adjustment of the multiple sliding blocks, thereby facilitating adjustment of the rotation of the multiple stirring blades on the vertical plane.

[0024] Optionally, an upper driving groove is provided on the driving ring, and the upper driving groove includes an adjusting portion and a normal portion, and the normal portion and the adjusting portion are spaced apart in the circumferential direction and axial direction of the driving ring, and the adjusting portion is located above the normal portion; a guide portion connected to the normal portion and the adjusting portion is provided between the normal portion and the adjusting portion, and a sliding rod is provided on the sliding block, one end of the sliding rod is fixed on the sliding block, and the other end is inserted into the upper driving groove.

[0025] By adopting the above technical solution, during the rotation of the driving rod, the position of the sliding rod slides in the upper driving groove relative to the upper driving groove. When the driving rod moves from the normal part to the direction close to the adjustment part, the position of the driving rod in the vertical direction changes, thereby driving the sliding block to move upward, and then driving the stirring blade to rotate upward.

[0026] In summary, the present application includes the following beneficial technical effects: rotating the rotating column to adjust the angle of the stirring blade, thereby realizing the adjustment of the shear force of the stirring blade on the waste mineral oil; adjusting the angle of the stirring blade according to the different viscosities of the waste mineral oil, thereby reducing the load of the motor used to drive the agitator to rotate, improving the service life of the motor, and at the same time improving the scope of application of the blending equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0028] Figure 2This is a schematic structural diagram of the agitator at the first angle according to an embodiment of the present application.

[0029] Figure 3 It is a schematic diagram of the cross-sectional structure of the agitator of an embodiment of the present application.

[0030] Figure 4 This is a schematic structural diagram of the agitator at a second angle according to an embodiment of the present application.

[0031] Figure 5 This is an embodiment of the present application Figure 4 Enlarged view of part A.

[0032] Figure 6 This is a schematic structural diagram of the agitator at the third angle according to an embodiment of the present application.

[0033] Figure 7 This is an embodiment of the present application Figure 6 Magnified view of part B.

[0034] Figure 8 It is a structural diagram of the adjustment component of an embodiment of the present application.

[0035] Figure 9 It is a structural schematic diagram of the variable diameter assembly of an embodiment of the present application.

[0036] Figure 10 This is an embodiment of the present application Figure 9 Magnified view of part C.

[0037] Figure 11 It is a schematic structural diagram of the drive ring of an embodiment of the present application.

[0038] Figure 12 This is a state diagram of the same group of stirring blades in an embodiment of the present application at different heights.

[0039] Figure numerals: 1. blending tank; 2. agitator; 21. stirring blade; 22. rotating shaft; 23. connecting rod; 24. transmission shaft; 3. adjusting assembly; 31. adjusting block; 32. rotating column; 33. sliding hole; 34. spiral groove; 35. driving column; 36. synchronous disk; 37. flat thread; 38. protective shell; 39. gear; 4. reducing assembly; 41. universal joint; 42. sliding block; 43. pull rod; 44. collar; 45. connecting column; 46. flexible tube; 47. baffle; 48. driving ring; 481. accommodating groove; 482. upper driving groove; 4821. guide part; 4822. normal part; 4823. adjusting part; 483. lower driving groove; 49. sliding rod; 5. fixing cylinder; 51. conical surface; 52. matching surface; 53. spiral blade; 54. circulation hole. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-12 This application is described in further detail.

[0041] The embodiment of the present application discloses a waste mineral oil blending and preheating device.

[0042] Reference Figure 1 and Figure 2 , a waste mineral oil blending and preheating equipment, comprising a blending tank 1 and an agitator 2. The agitator 2 comprises a stirring blade 21 and a rotating shaft 22, the rotating shaft 22 being arranged vertically and rotatably connected around its own axis inside the blending tank 1. The stirring blades 21 are arranged in multiple groups evenly spaced along the axial direction of the rotating shaft 22, and are arranged in two groups in this embodiment. Each group of stirring blades 21 comprises a plurality of stirring blades 21 arranged around the axis of the rotating shaft 22, and each group of stirring blades 21 comprises 6 stirring blades in this embodiment. The stirring blade 21 is a plate-like structure, and its length direction is arranged perpendicular to the rotating shaft 22. The stirring blade 21 is rotatably connected to the rotating shaft 22, and the rotation axis of the stirring blade 21 is perpendicular to the axis of the rotating shaft 22. Rotating the stirring blade 21 can change the angle between the stirring blade 21 and the ground. In the process of gradually increasing the angle between the stirring blade 21 and the ground until it is perpendicular to the ground, in the environment of waste mineral oil with the same viscosity, the resistance encountered by the stirring blade 21 gradually increases. Conversely, as the angle between stirring blade 21 and the ground gradually decreases until it becomes parallel to the ground, the resistance experienced by stirring blade 21 gradually decreases. During the waste mineral oil mixing process, the angle between stirring blade 21 and the ground can be adjusted according to the viscosity of the waste mineral oil, thereby reducing overload on the motor driving rotating shaft 22. The rotation of stirring blade 21 enables stirring of waste mineral oils of varying viscosities, thereby expanding the applicability of the blending equipment.

[0043] Reference Figure 1 and Figure 2 The outside of the blending tank 1 is wrapped with an electromagnetic coil (not shown in the figure). AC is supplied to the electromagnetic coil, which uses the eddy current effect to heat the waste mineral oil in the blending tank 1. When the waste mineral oil is heated, its viscosity can be reduced to a certain extent.

[0044] Reference Figure 2 and Figure 3 The interior of the blending tank 1 is provided with a fixed cylinder 5, which is a cylindrical structure, one end of which is welded to the bottom wall of the blending tank 1. The rotating shaft 22 is hollow inside and is rotatably sleeved on the outside of the fixed cylinder 5 to realize the rotational connection between the rotating shaft 22 and the blending tank 1.

[0045] Reference Figure 2 and Figure 3A tapered surface 51 is provided on the outer wall of the fixed cylinder 5. The tapered surface 51 is inclined vertically upward toward the axis of the fixed cylinder 5. A mating surface 52 is provided on the inner wall of the rotating shaft 22 to mate with the tapered surface 51. Under the action of gravity, the rotating shaft 22 has a downward force, thereby enabling the mating surface 52 to closely contact the tapered surface 51. At the same time, the tapered surface 51 can support the rotating shaft 22.

[0046] Reference Figure 2 and Figure 3 A spiral blade 53 is installed inside the fixed barrel 5. A motor is installed at the top of the blending tank 1. A transmission shaft 24 is coaxially welded to the motor's output shaft, and the transmission shaft 24 is welded to the spiral blade 53. A connecting rod 23 is installed between the transmission shaft 24 and the rotating shaft, with its ends welded to the rotating shaft 22 and the transmission shaft 24, respectively. Rotation of the motor's output shaft drives the transmission shaft 24, which in turn drives the spiral blade 53 and the rotating shaft 22 to rotate synchronously. The rotation of the spiral blade 53 drives the liquid in the fixed barrel 5 to flow vertically. A circulation hole 54 is provided on the sidewall of the fixed barrel 5, near the ground. Waste mineral oil outside the fixed barrel 5 can enter the fixed barrel 5 through the circulation hole 54 and then flow out from the upper end of the fixed barrel 5 under the action of the spiral blade 53. This reciprocating cycle improves the stirring effect of the waste mineral oil. Furthermore, the heat generated by the friction between the rotating shaft 22 and the fixed barrel 5 can be fed back into the waste mineral oil, providing auxiliary heating.

[0047] Reference Figure 4 and Figure 5 , an adjustment component 3 is provided on the rotating shaft 22, and the adjustment component 3 includes an adjustment block 31 and a rotating column 32. The rotating column 32 is a cylindrical structure, and the rotating column 32 is arranged radially along the rotating shaft 22. The rotating column 32 is connected to the rotating shaft 22 by rotating around its own axis. The stirring blade 21 is mounted on the rotating column 32 to realize the rotational connection between the stirring blade 21 and the rotating shaft 22. The adjustment block 31 is slidably connected to the rotating shaft 22 along the length direction of the rotating column 32, and a sliding hole 33 is opened on the adjustment block 31 at a position corresponding to the rotating column 32, and the rotating column 32 is inserted into the sliding hole 33.

[0048] Reference Figure 4 and Figure 5 The adjustment assembly 3 further includes a drive post 35. A helical groove 34 is defined on the sidewall of the rotating post 32, its axis coaxial with the rotating post 32. The drive post 35 is radially disposed along the rotating post 32, with one end welded to the sidewall of the sliding hole 33 and the other end inserted into the helical groove 34. The sliding adjustment block 31 drives the drive post 35 to slide within the helical groove 34, thereby rotating the rotating post 32 and adjusting the rotation of the stirring blade 21.

[0049] Reference Figure 4 and Figure 5 A plurality of driving posts 35 are evenly spaced along the circumference of the rotating shaft 22 , and a plurality of spiral grooves 34 are provided corresponding to the driving posts 35 , thereby improving the stability of the rotating post 32 during rotation.

[0050] Reference Figure 4 and Figure 5 The adjustment component 3 also includes a synchronization disk 36, which is a circular annular structure. The synchronization disk 36 is coaxially sleeved on the outside of the rotating shaft 22, and the synchronization disk 36 can rotate around its own axis. The synchronization disk 36 is located above the adjustment block 31. The side of the synchronization disk 36 close to the adjustment block 31 is provided with a plane thread 37 extending along the vortex line, and the corresponding plane thread 37 on the adjustment block 31 is provided with a thread groove engaged with it. The plane thread 37 is engaged with the thread grooves on the multiple adjustment blocks 31. Rotating the synchronization disk 36 can drive the multiple adjustment blocks 31 to slide together, thereby realizing the synchronous adjustment of the rotation of the multiple rotating columns 32. At the same time, the self-locking property of the thread fit is utilized, so that the synchronization disk 36 can limit the sliding of the adjustment block 31, thereby improving the stability of the stirring blade 21 during use.

[0051] Reference Figure 6 and Figure 7 The outer cover of the adjustment component 3 is provided with a protective shell 38. The protective shell 38 is annular in structure as a whole and hollow inside. The cover is provided outside the adjustment component 3, thereby preventing external impurities from entering gaps such as tooth grooves or thread grooves.

[0052] Reference Figure 6 and Figure 7 The outer wall of the synchronous disk 36 is uniformly provided with tooth grooves along its own circumference. A gear 39 is rotatably provided on the rotating shaft 22 and meshes with the tooth grooves. Gear 39 meshes with the tooth grooves, and rotation of gear 39 drives the synchronous disk 36 to move, thereby driving the synchronous disk 36. In this embodiment, gear 39 is driven by a DC motor fixed to the protective shell 38. The DC motor can be driven by a battery. During the actual processing process, the battery and DC motor are sealed.

[0053] Reference Figure 6 and Figure 8 A reducing assembly 4 is provided between the rotating column 32 and the stirring blade 21. The reducing assembly 4 includes a universal shaft 41. One of the rotating shafts of the universal shaft 41 is coaxially welded to the rotating column 32, and the other rotating shaft 22 is connected to the stirring blade 21. The rotation axis of the rotating column 32 is defined as the first axis, and the axis parallel to the ground and perpendicular to the first axis is defined as the second axis. Under the action of the universal shaft 41, the stirring blade 21 can rotate around the second axis, so that the stirring blade 21 is closer to or farther away from the ground at the end away from the rotating column 32.

[0054] Reference Figure 6 and Figure 8The reducing assembly 4 also includes a sliding block 42, a pull rod 43 and a collar 44. The sliding block 42 is slidably connected to the rotating shaft 22 along the length direction of the rotating shaft 22, and the pull rod 43 is located between the sliding block 42 and the stirring blade 21. The end of the stirring blade 21 close to the rotating column 32 is defined as the connecting end. The connecting end is provided with a cylindrical connecting column 45. The connecting column 45 is fixedly connected to one of the rotating shafts of the universal shaft 41 to achieve the connection between the stirring blade 21 and the universal shaft 41. The collar 44 is a circular ring structure, and the collar 44 is rotatably sleeved on the connecting column 45. One end of the pull rod 43 is rotatably connected to the sliding block 42, and the other end is rotatably connected to the outer wall of the collar 44. The rotational connection between the collar 44 and the connecting column 45 enables the stirring blade 21 to rotate when the rotating column 32 rotates. The rotational connection between the pull rod 43 and the collar 44 enables the stirring blade 21 to rotate around the second axis when the sliding block 42 slides. A flexible tube 46 is provided between the rotating column 32 and the stirring blade 21 . Both ends of the flexible tube 46 are bonded to the rotating column 32 and the connecting column 45 respectively to protect the universal shaft 41 and prevent impurities from adhering to the universal shaft 41 .

[0055] Reference Figure 8 and Figure 9 Two baffles 47 are provided on both sides of the collar 44 in the horizontal direction. The two baffles 47 are arranged vertically and spaced apart in parallel. The baffles 47 are parallel to the axis of the rotating column 32 and are welded to the protective shell 38. The outer wall of the collar 44 abuts against the baffles 47, so that the baffles 47 can limit the collar 44. During the stirring process of the waste mineral oil, the baffles 47 can exert a supporting force on the collar 44, and then exert a supporting force on the stirring blade 21, thereby reducing the situation where the reaction force on the stirring blade 21 is completely transmitted to the pull rod 43, thereby increasing the service life of the pull rod 43.

[0056] During the mixing process of the waste mineral oil, the sliding block 42 drives different stirring blades 21 to rotate in different directions around the second axis, so that the stirring blades 21 can stir the waste mineral oil in a larger range in the direction of the axis of the rotating shaft 22, thereby improving the mixing effect of the waste mineral oil and the chemical agent.

[0057] On the other hand, in the actual production process, the end of the stirring blade 21 away from the rotating shaft 22 is defined as the stirring end; if the distances from the stirring ends at different heights to the rotating shaft are different, the movement speeds of the waste mineral oil at different positions in the blending tank 1 will be different, which will facilitate the generation of secondary vortexes and further improve the waste mineral oil and chemical agents.

[0058] Reference Figure 9In this embodiment, the stirring blades 21 are configured in two states. The first state is when multiple stirring blades 21 are located on the same horizontal plane. This state is suitable for situations where the waste mineral oil in the blending tank 1 is not full. In this state, since the multiple stirring blades 21 are located at the same height, the forces acting on the stirrer 2 are relatively reduced, making it easier to stir the waste mineral oil with higher viscosity.

[0059] Reference Figure 12 In the second state, the plurality of stirring blades 21 in the same horizontal plane are divided into two groups, namely a first stirring group and a second stirring group. The plurality of stirring blades 21 in the two groups of stirring blades 21 are staggered with each other. This can also be understood as the stirring blades 21 in one group are spaced apart along the circumference of the rotating shaft 22, and the stirring blades 21 in the other group are spaced apart to correspond to the gaps between adjacent two stirring blades 21 in the first group.

[0060] Reference Figure 6 and Figure 12 The stirring end of the stirring blade 21 in the first stirring group is located above the rotating column 32, while the stirring end of the stirring blade 21 in the second stirring group is located below the rotating column 32. As a result, the stirring ends of the first stirring group and the second stirring group are spaced apart in the vertical direction, which is convenient for adapting to the situation where the blending tank 1 contains a large amount of waste mineral oil, or even is in a full liquid state.

[0061] Reference Figure 9 and Figure 10 In this embodiment, the reducing assembly 4 also includes a driving ring 48, which is sleeved on the rotating shaft 22. An annular receiving groove 481 is provided on the inner side wall of the driving ring 48, and the side of the sliding block 42 facing away from the ground is inserted into the receiving groove 481. An upper driving groove 482 is provided on the side wall of the receiving groove 481 corresponding to the stirring blade 21 in the first stirring group. The upper driving groove 482 includes a guide portion 4821, a normal portion 4822 and an adjustment portion 4823. The normal portion 4822 and the adjustment portion 4823 both extend along the circumference of the driving ring 48. The normal portion 4822 is located below the adjustment portion 4823, and the two normal portions 4822 and the adjustment portion are spaced apart in the circumferential direction of the driving ring 48. The guide portion 4821 is provided between the two normal portions 4822 and the adjustment portion 4823, and the two ends of the guide portion 4821 are respectively connected to the normal portion 4822 and the adjustment portion 4823.

[0062] Reference Figure 9 and Figure 10 The sliding block 42 is provided with a sliding rod 49, one end of the sliding rod 49 is welded to the sliding block 42, and the other end is inserted into the upper driving groove 482. When the driving ring 48 rotates, the sliding rod 49 slides in the upper driving groove 482. Figure 11When the sliding rod 49 slides from the normal portion 4822 to the adjustment portion 4823, it can drive the sliding block 42 to slide upward, and then drive the stirring blade 21 to rotate upward.

[0063] Reference Figure 9 and Figure 10 , a lower driving groove 483 is provided on the side wall of the receiving groove 481 corresponding to the stirring blade 21 in the second stirring group, and the lower driving groove 483 has the same structure as the upper driving groove 482. Figure 11 The adjustment portion 4823 of the lower driving groove 483 is located below the normal portion 4822. When the sliding rod 49 moves from the normal portion 4822 to the adjustment portion 4823, it can drive the stirring blades 21 of the second stirring group to rotate downward. When the driving ring 48 rotates, it can drive the stirring blades 21 of the first stirring group to rotate upward and the stirring blades 21 of the second stirring group to rotate downward, thereby facilitating the adjustment of the two groups of stirring blades 21.

[0064] The implementation principle of the waste mineral oil blending and preheating equipment in the embodiment of the present application is: by rotating the rotating column 32, the angle between the stirring blade 21 and the circumference of the rotating shaft 22 is adjusted, thereby changing the shear force of the stirring blade 21 on the liquid in the blending tank 1. When the shear force is large, the resistance encountered by the stirring blade 21 is small, so that it can adapt to the stirring of waste mineral oil with higher viscosity, thereby improving the applicability of the blending and preheating equipment.

[0065] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A waste mineral oil blending and preheating device, comprising a blending tank (1) and an agitator (2) arranged inside the blending tank (1), characterized in that: The stirrer (2) comprises a rotating shaft (22) and a stirring blade (21); a fixed cylinder (5) is provided inside the blending tank (1); the rotating shaft (22) is hollow inside and the rotating shaft (22) is rotatably sleeved outside the fixed cylinder (5); a spiral blade (53) is provided inside the fixed cylinder (5); the spiral blade (53) is fixedly connected to the rotating shaft (22); a circulation hole (54) is provided on the fixed cylinder (5); the circulation hole (54) is located below the rotating shaft (22); the stirring blade (21) is rotatably connected to the rotating shaft (22); the rotation axis of the stirring blade (21) is perpendicular to the rotation axis of the rotating shaft (22); An adjusting assembly (3) is provided on the rotating shaft (22), and the adjusting assembly (3) includes an adjusting block (31) and a rotating column (32). The rotating column (32) is a cylindrical structure, and the rotating column (32) is connected to the rotating shaft (22) by rotating around its own axis. The stirring blade (21) is mounted on the rotating column (32). The adjusting block (31) is connected to the rotating shaft (22) by sliding along the radial direction of the rotating shaft (22). A sliding hole (33) is provided on the adjusting block (31). The regulating block (31) is sleeved on the outside of the rotating column (32), and the regulating block (31) can drive the rotating column (32) to rotate by sliding; the rotating column (32) and the stirring blade (21) are connected via a universal shaft (41), and the stirring blade (21) can rotate around an axis perpendicular to the axis of the rotating column (32) and parallel to the ground; a diameter reducing assembly (4) is provided on the rotating shaft (22), and the diameter reducing assembly (4) includes a sliding block (42), a pull rod (43) and a collar (44). The sleeve (44) is rotatably sleeved on the stirring blade (21), the sliding block (42) is slidably connected to the rotating shaft (22) in a direction parallel to the rotating shaft (22), the pull rod (43) is arranged between the sleeve (44) and the sliding block (42), and the two ends of the pull rod (43) are rotatably connected to the sliding block (42) and the sleeve (44), and the sliding of the sliding block (42) can drive the stirring blade (21) to rotate; the diameter reducing assembly (4) also includes a driving ring (48), and the driving ring (4 8) connected to the sliding block (42), the driving ring (48) is rotated to drive the sliding block (42) to slide in the vertical direction; the driving ring (48) is provided with an upper driving groove (482), the upper driving groove (482) includes an adjusting portion (4823) and a normal portion (4822), the normal portion (4822) and the adjusting portion (4823) are spaced apart in the circumferential direction and axial direction of the driving ring (48), and the adjusting portion (4823) is located above the normal portion (4822);A guide portion (4821) is provided between the normal portion (4822) and the regulating portion (4823), and is connected to the normal portion (4822) and the regulating portion (4823). A sliding rod (49) is provided on the sliding block (42), one end of the sliding rod (49) is fixed on the sliding block (42), and the other end is inserted into the upper driving groove (482); the plurality of stirring blades (21) are divided into two groups, and the two groups of stirring blades (21) are respectively a first stirring group and a second stirring group; the plurality of stirring blades (21) in the two groups of stirring blades (21) are arranged in an interlaced manner; the upper driving groove (482) corresponds to the first stirring group and the second stirring group. A stirring group is provided; an annular receiving groove (481) is provided on the inner side wall of the driving ring (48); a lower driving groove (483) is provided on the side wall of the receiving groove (481) corresponding to the stirring blade (21) in the second stirring group; the lower driving groove (483) has the same structure as the upper driving groove (482), and the adjustment portion (4823) of the lower driving groove (483) is located below the normal portion (4822); when the driving ring (48) rotates, it can drive the stirring blade (21) in the first stirring group to rotate upward, and at the same time drive the stirring blade (21) in the second stirring group to rotate downward.

2. The waste mineral oil blending and preheating equipment according to claim 1, characterized in that: The outer wall of the fixed cylinder (5) is provided with a tapered surface (51), and the tapered surface (51) is inclined in a vertically upward direction toward its own axis. The inner wall of the rotating shaft (22) is provided with a matching surface (52) that fits the tapered surface (51).

3. The waste mineral oil blending and preheating equipment according to claim 1, characterized in that: A spiral groove (34) is provided on the side wall of the rotating column (32), and a cylindrical driving column (35) is provided on the side wall of the sliding hole (33). One end of the driving column (35) is fixed to the adjusting block (31) and the other end is inserted into the spiral groove (34).

4. The waste mineral oil blending and preheating equipment according to claim 1, characterized in that: The adjustment assembly (3) further comprises a synchronization disk (36), the synchronization disk (36) being rotatably sleeved on the outside of the rotation shaft (22), a plane thread (37) being provided on a side of the synchronization disk (36) close to the adjustment block (31), and a thread groove corresponding to the plane thread (37) being provided on the adjustment block (31) and engaging with the plane thread (37).

5. The waste mineral oil blending and preheating equipment according to claim 4, characterized in that: The synchronous disk (36) is provided with a plurality of tooth grooves evenly arranged around its own rotation axis, and a gear is rotatably connected to the rotation shaft (22), and the gear is meshed with the tooth grooves.

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