Waste mineral oil blending and preheating equipment

Abstract

The invention relates to the field of mixing equipment, in particular to waste mineral oil blending and preheating equipment which comprises a blending tank and a stirrer arranged in the blending tank, the stirrer comprises a rotating shaft and stirring blades, a fixed cylinder is arranged in the blending tank, the rotating shaft is hollow and rotatably arranged outside the fixed cylinder in a sleeving mode, and the stirring blades are arranged on the rotating shaft. A spiral blade is arranged in the fixed cylinder and is fixedly connected with the rotating shaft; a circulating hole is formed in the fixed cylinder, the circulating hole is located below the rotating shaft, the stirring blades are rotationally connected to the rotating shaft, and the rotating axis of the stirring blades is perpendicular to the rotating axis of the rotating shaft. The application has the effect of expanding the application range of the blending and preheating equipment.

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 contaminated by pollution sources and rendered unusable. For example, the lubricating oil used in the lubrication system of mechanical equipment generates high temperatures during use, causing thermal decomposition of the lubricating oil, resulting in the formation of gum and coke, and ultimately rendering the lubricating oil useless. Based on environmental protection requirements, waste mineral oil cannot be directly discharged. Therefore, waste mineral oil is usually processed and refined to extract useful substances from the waste mineral oil and achieve the reuse of waste mineral oil. A common method for treating waste mineral oil is the flash evaporation method. Since the sources of waste mineral oil are diverse, there are some solid particles in waste mineral oil, such as metal powder, grit, etc. Therefore, it is necessary to filter the impurities in the waste mineral oil. To improve the filtration efficiency, some chemical agents need to be added to the waste mineral oil and stirred evenly to accelerate precipitation. For example, a waste mineral oil solvent high-efficiency recovery device disclosed in a patent document with the publication number: CN218047775U. It mainly includes a cylinder body, a stirrer, and a heater. The cylinder body is provided with a feed inlet, and the waste mineral oil and chemical agents enter the interior of the cylinder body through the feed inlet. Subsequently, the waste mineral oil is heated by the heater, and the stirrer stirs the waste mineral oil to evenly mix the waste mineral oil with the chemical agents.

[0003] However, in the actual treatment process of waste mineral oil, the viscosities of different batches of waste mineral oil are different. When the stirrer stirs waste mineral oil with different viscosities, the resistance it encounters is different. Therefore, different specifications of equipment are often required for the stirring and mixing of waste mineral oil with different viscosities. In summary, traditional equipment for blending waste mineral oil cannot adjust the resistance of the stirrer according to the viscosity of the waste mineral oil, resulting in a small scope of application in actual production activities. Summary of the Invention

[0004] In order to adjust the force on the stirrer to facilitate the blending of waste mineral oil with different viscosities and expand the scope of application of the blending equipment, the present application provides a waste mineral oil blending and preheating device.

[0005] The waste mineral oil blending and preheating device provided by the present application adopts the following technical solutions: A waste mineral oil blending and preheating device, comprising a blending tank and a stirrer arranged inside the blending tank. The stirrer includes a rotating shaft and stirring blades. A fixed cylinder is arranged inside the blending tank. The inside of the rotating shaft is hollow, and the rotating shaft is rotatably sleeved outside the fixed cylinder. A spiral blade is arranged inside the fixed cylinder, and the spiral blade is fixedly connected to the rotating shaft. A circulation hole is arranged on the fixed cylinder, and the circulation hole is located below the rotating shaft. The stirring blades are rotatably connected to the rotating shaft, and the rotation axis of the stirring blades is perpendicular to the rotation axis of the rotating shaft.

[0006] By adopting the above technical solution, the stirring blades are rotatably connected to the rotating shaft, and rotating the stirring blades can change the angle between the stirring blades and the ground. When the stirring blades are parallel to the ground, the shearing force of the stirring blades on the waste mineral oil is the strongest at this time, and the resistance received by the stirring blades is smaller. When the stirring blades are perpendicular to the ground, the resistance received during the process of the rotating shaft driving the stirring blades to rotate is the largest. During actual production, the angle of the stirring blades can be adjusted according to the viscosity of the waste mineral oil, so that the load of the motor used to drive the rotation of the rotating shaft is within a reasonable range, extending the service life of the motor and expanding the applicable range of the blending equipment. At the same time, a spiral blade is arranged inside the fixed cylinder. Under the action of the spiral blade, the waste mineral oil inside the fixed cylinder can move in the vertical direction. Specifically, the waste mineral oil located outside the fixed cylinder enters the fixed cylinder from the circulation hole and then is discharged from the top of the fixed cylinder, and circulates in this way, improving the stirring effect on 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.

[0007] Optionally, a conical surface is arranged on the outer side wall of the fixed cylinder, and the conical surface inclines towards the direction close to its own axis in the vertically upward direction. A mating surface that fits the conical surface is arranged on the inner side wall of the rotating shaft.

[0008] By adopting the above technical solution, the upper end of the conical surface inclines towards the direction close to its own axis, and the rotating shaft is sleeved outside the fixed cylinder. Under the action of the self-gravity of the rotating shaft, the mating surface can continuously fit with the conical surface. At the same time, the conical surface and the mating surface cooperate to realize the rotational connection between the rotating shaft and the fixed cylinder. Utilizing the centering property of the conical surface, the situation of the rotating shaft shaking during rotation is reduced, and the stability of the rotating shaft during rotation is improved.

[0009] Optionally, an adjusting component is arranged on the rotating shaft. The adjusting component includes an adjusting block and a rotating column. The rotating column is of a cylindrical structure, and the rotating column is rotatably connected to the rotating shaft around its own axis. The stirring blades are installed on the rotating column. The adjusting block is slidably connected to the rotating shaft along the radial direction of the rotating shaft. A sliding hole is opened on the adjusting block, and the adjusting block is sleeved outside the rotating column. The sliding of the adjusting block can drive the rotating column to rotate.

[0010] By adopting the above technical solution, the stirring blade is installed on the rotating column. During the rotation of the rotating column, the stirring blade can be driven to rotate, realizing the rotational connection between the stirring blade and the rotating shaft. At the same time, the adjusting block is slidably connected to the rotating shaft, and the rotating column is driven to rotate by sliding the adjusting block, realizing the control of the rotation of the rotating column.

[0011] Optionally, a spiral groove is formed on the side wall of the rotating column, and a cylindrical driving column is arranged on the side wall of the sliding hole. One end of the driving column is fixed on the adjusting block and the other end is inserted into the spiral groove.

[0012] By adopting the above technical solution, the sliding adjusting 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.

[0013] Optionally, the adjusting assembly further includes a synchronous disk. The synchronous disk is rotatably sleeved outside the rotating shaft. A flat thread is arranged on one side of the synchronous disk close to the adjusting block, and a thread groove meshing with the flat thread is formed on the adjusting block corresponding to the flat thread.

[0014] By adopting the above technical solution, the synchronous disk and multiple adjusting blocks are connected through the flat thread. On the one hand, the synchronous driving of multiple adjusting blocks is realized, and on the other hand, the self-locking between the synchronous disk and the adjusting block is realized, thereby improving the stability of the rotating column during the blending process of waste mineral oil.

[0015] Optionally, a plurality of tooth grooves are evenly formed on the synchronous disk around its rotation axis, and a gear is rotatably connected to the rotating shaft. The gear meshes with the tooth grooves.

[0016] By adopting the above technical solution, the synchronous disk is driven to rotate by the gear, which is convenient for driving the synchronous disk during the actual production process.

[0017] Optionally, the rotating column and the stirring blade are connected through a universal shaft, and the stirring blade can rotate around an axis perpendicular to the axis of the rotating column and parallel to the ground.

[0018] By adopting the above technical solution, the stirring blade can move in the vertical plane through the universal shaft, thereby adjusting the position of the stirring blade for stirring the waste mineral oil. Moreover, during the actual production process, some stirring blades can be rotated upward and some can be rotated downward according to the actual situation, so as to stir the waste mineral oil in the blending tank more comprehensively, improving the mixing efficiency and mixing effect of the waste mineral oil and the chemical agent.

[0019] Optionally, a diameter-changing component is arranged on the rotating shaft. The diameter-changing component includes a sliding block, a pull rod, and a collar. The collar is rotatably sleeved on the stirring blade. The sliding block is slidably connected to the rotating shaft in a direction parallel to the rotating shaft. The pull rod is arranged between the collar and the sliding block, and two ends of the pull rod are respectively rotatably connected to the sliding block and the collar. The rotation of the sliding block can drive the stirring blade to rotate.

[0020] By adopting the above technical solution, the rotational connection between the collar and the stirring blade is for two purposes. On the one hand, it is to realize the connection between the pull rod and the stirring blade; on the other hand, it is to adapt to the rotation of the stirring blade generated when the rotating column rotates. At the same time, the sliding block and the collar are connected by a pull rod. By sliding the sliding block, the stirring blade can be driven to rotate, realizing the adjustment of the rotation of the stirring blade in the vertical plane.

[0021] Optionally, the diameter-changing component further includes a driving ring. The driving ring is connected to the sliding block, and the rotation of the driving ring can drive the sliding block to slide in the vertical direction.

[0022] By adopting the above technical solution, the driving ring drives the movement of multiple sliding blocks, realizing the synchronous adjustment of multiple sliding blocks, which is convenient for adjusting the rotation of multiple stirring blades in the vertical plane.

[0023] Optionally, an upper driving groove is formed in the driving ring. The upper driving groove includes an adjusting part and a normal part. The normal part and the adjusting part are both spaced in the circumferential direction and the axial direction of the driving ring, and the adjusting part is located above the normal part. A guiding part communicating with the normal part and the adjusting part is arranged between the normal part and the adjusting part. A sliding rod is arranged 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.

[0024] 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 towards the direction close to the adjusting part, the position of the driving rod in the vertical direction changes, so as to drive the sliding block to move upward, and then drive the stirring blade to rotate upward.

[0025] In summary, the present application has the following beneficial technical effects: Rotate the rotating column to adjust the angle of the stirring blade, so as to realize the adjustment of the shearing force of the stirring blade on the waste mineral oil. According to the different viscosities of the waste mineral oil, adjust the angle of the stirring blade, so as to reduce the load of the motor used to drive the rotation of the stirrer, improve the service life of the motor, and at the same time improve the applicable range of the blending equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0027] Figure 2It is a schematic structural diagram of the agitator at the first angle in the embodiment of the present application.

[0028] Figure 3 It is a schematic cross-sectional structural diagram of the agitator in the embodiment of the present application.

[0029] Figure 4 It is a schematic structural diagram of the agitator at the second angle in the embodiment of the present application.

[0030] Figure 5 It is in the embodiment of the present application Figure 4 An enlarged view of part A.

[0031] Figure 6 It is a schematic structural diagram of the agitator at the third angle in the embodiment of the present application.

[0032] Figure 7 It is in the embodiment of the present application Figure 6 An enlarged view of part B.

[0033] Figure 8 It is a schematic structural diagram of the adjusting assembly in the embodiment of the present application.

[0034] Figure 9 It is a schematic structural diagram of the diameter-changing assembly in the embodiment of the present application.

[0035] Figure 10 It is in the embodiment of the present application Figure 9 An enlarged view of part C.

[0036] Figure 11 It is a schematic structural diagram of the driving ring in the embodiment of the present application.

[0037] Figure 12 It is a state diagram of the same group of stirring blades at different heights in the embodiment of the present application.

[0038] Reference 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 disc; 37, planar thread; 38, protective shell; 39, gear; 4, diameter-changing assembly; 41, universal shaft; 42, sliding block; 43, pull rod; 44, collar; 45, connecting column; 46, flexible pipe; 47, baffle; 48, driving ring; 481, accommodating groove; 482, upper driving groove; 4821, guiding part; 4822, normal state part; 4823, adjusting part; 483, lower driving groove; 49, sliding rod; 5, fixed cylinder; 51, conical surface; 52, mating surface; 53, spiral blade; 54, circulation hole. Detailed implementation manners

[0039] The following is combined with the attachedFigures 1 - 12 Further details of this application will be described below.

[0040] An embodiment of this application discloses a waste mineral oil blending and preheating device.

[0041] Referring to Figure 1 and Figure 2 As shown in FIGS. 1 and 2, a waste mineral oil blending and preheating device includes a blending tank 1 and a stirrer 2. The stirrer 2 includes stirring blades 21 and a rotating shaft 22. The rotating shaft 22 is vertically arranged and is rotatably connected inside the blending tank 1 around its own axis. A plurality of groups of stirring blades 21 are evenly spaced along the axial direction of the rotating shaft 22. In this embodiment, two groups are provided. Each group of stirring blades 21 includes a plurality of stirring blades 21 arranged around the axis of the rotating shaft 22. In this embodiment, each group of stirring blades 21 includes 6 stirring blades. The stirring blades 21 are in a plate-like structure, and the length direction thereof is perpendicular to the rotating shaft 22. The stirring blades 21 are rotatably connected to the rotating shaft 22, and the rotation axis of the stirring blades 21 is perpendicular to the axis of the rotating shaft 22. Rotating the stirring blades 21 can change the angle between the stirring blades 21 and the ground. In the process that the angle between the stirring blades 21 and the ground gradually increases until it is perpendicular to the ground, in the environment of waste mineral oil with the same viscosity, the resistance received by the stirring blades 21 gradually increases. On the contrary, in the process that the angle between the stirring blades 21 and the ground gradually decreases until it is parallel to the ground, the resistance received by the stirring blades 21 gradually decreases. During the mixing process of the waste mineral oil, the angle between the stirring blades 21 and the ground can be adjusted according to the viscosity of the waste mineral oil, so as to reduce the overload of the motor used to drive the rotation of the rotating shaft 22. Due to the rotation of the stirring blades 21, the stirring of waste mineral oil with different viscosities can be realized, and the applicable range of the blending device is improved.

[0042] Referring to Figure 1 and Figure 2 As shown in FIGS. 3 and 4, an electromagnetic coil (not shown in the figure) is wound outside the blending tank 1. When an alternating current is passed through the electromagnetic coil, the waste mineral oil in the blending tank 1 can be heated by the eddy current effect. After the waste mineral oil is heated, its viscosity can be reduced to a certain extent.

[0043] Referring to Figure 2 and Figure 3 As shown in FIGS. 5 and 6, a fixed cylinder 5 is arranged inside the blending tank 1. The fixed cylinder 5 is in a cylindrical structure, and one end of it is welded to the bottom wall of the blending tank 1. The inside of the rotating shaft 22 is hollow and is rotatably sleeved outside the fixed cylinder 5 to realize the rotational connection between the rotating shaft 22 and the blending tank 1.

[0044] Referring to Figure 2 and Figure 3, a conical surface 51 is provided on the outer side wall of the fixed cylinder 5. The conical surface 51 is inclined in the direction close to the axis of the fixed cylinder 5 along the vertically upward direction. A mating surface 52 that cooperates with the conical surface 51 is provided on the inner side wall of the rotating shaft 22. Under the action of gravity, the rotating shaft 22 has a downward movement force, so that the mating surface 52 can closely adhere to the conical surface 51. At the same time, the conical surface 51 can support the rotating shaft 22.

[0045] Refer to Figure 2 and Figure 3 , a spiral blade 53 is provided inside the fixed cylinder 5. A motor is provided at the top of the mixing tank 1. A transmission shaft 24 is coaxially welded to the output shaft of the motor. The transmission shaft 24 is welded to the spiral blade 53. At the same time, a connecting rod 23 is provided between the transmission shaft 24 and the rotating shaft. Both ends of the connecting rod 23 are welded to the rotating shaft 22 and the transmission shaft 24 respectively. The rotation of the output shaft of the motor drives the transmission shaft 24 to rotate, and the rotation of the transmission shaft 24 drives the spiral blade 53 and the rotating shaft 22 to rotate synchronously. The rotation of the spiral blade 53 can drive the liquid in the fixed cylinder 5 to flow in the vertical direction. A circulation hole 54 is provided at a position on the side wall of the fixed cylinder 5 close to the ground. The waste mineral oil outside the fixed cylinder 5 can enter the fixed cylinder 5 from the circulation hole 54, and then flow out from the upper end of the fixed cylinder 5 under the action of the spiral blade 53, so as to improve the stirring effect on the waste mineral oil by circulating in this way. At the same time, the heat generated during the rotational friction between the rotating shaft 22 and the fixed cylinder 5 can be fed back to the waste mineral oil to realize the auxiliary heating of the waste mineral oil.

[0046] Refer to Figure 4 and Figure 5 , an adjusting assembly 3 is provided on the rotating shaft 22. The adjusting assembly 3 includes an adjusting block 31 and a rotating column 32. The rotating column 32 is of a cylindrical structure and is arranged radially along the rotating shaft 22. The rotating column 32 is rotatably connected to the rotating shaft 22 around its own axis. The stirring blade 21 is installed on the rotating column 32 to realize the rotational connection between the stirring blade 21 and the rotating shaft 22. The adjusting block 31 is slidably connected to the rotating shaft 22 along the length direction of the rotating column 32. A sliding hole 33 is provided at the position corresponding to the rotating column 32 on the adjusting block 31, and the rotating column 32 passes through the sliding hole 33.

[0047] Refer to Figure 4 and Figure 5 , the adjusting assembly 3 further includes a driving column 35. A spiral groove 34 with an axis coaxial with the rotating column 32 is provided on the side wall of the rotating column 32. The driving column 35 is arranged radially along the rotating column 32, and one end of the driving column 35 is welded to the side wall of the sliding hole 33, and the other end is inserted into the spiral groove 34. Sliding the adjusting block 31 can drive the driving column 35 to slide in the spiral groove 34, thereby driving the rotating column 32 to rotate and realizing the adjustment of the rotation of the stirring blade 21.

[0048] Refer to Figure 4 andFigure 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.

[0049] Reference Figure 4 and Figure 5 The adjustment component 3 also includes a synchronization disk 36, which is a circular ring 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 spiral line, and the corresponding plane thread 37 on the adjustment block 31 is provided with a thread groove engaged therewith. 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.

[0050] Reference Figure 6 and Figure 7 The outer cover of the adjustment component 3 is provided with a protective shell 38, which is annular in structure as a whole and hollow inside. The cover is provided outside the adjustment component 3, so as to prevent external impurities from entering the gaps such as tooth grooves or thread grooves.

[0051] Reference Figure 6 and Figure 7 The outer wall of the synchronous disk 36 is evenly provided with tooth grooves along its own circumference, and a gear 39 meshing with the tooth groove is rotatably provided on the rotating shaft 22. The gear 39 meshes with the tooth groove, and the rotation of the gear 39 can drive the synchronous disk 36 to move, thereby driving the synchronous disk 36. In this embodiment, the gear 39 is driven by a DC motor fixed on the protective shell 38, and the DC motor can be driven by a battery. In the actual processing process, the battery and the DC motor are sealed.

[0052] Reference Figure 6 and Figure 8 A reducer assembly 4 is provided between the rotating column 32 and the stirring blade 21, and the reducer assembly 4 includes a universal shaft 41, one of the rotating shafts of the universal shaft 41 is coaxially welded with 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 end of the stirring blade 21 away from the rotating column 32 is close to or away from the ground.

[0053] Reference Figure 6 and Figure 8, the diameter-changing component 4 further 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. The pull rod 43 is located between the sliding block 42 and the stirring blade 21. One end of the stirring blade 21 close to the rotating column 32 is defined as the connecting end, and a cylindrical connecting column 45 is arranged at the connecting end. The connecting column 45 is fixedly connected to one of the rotating shafts of the universal shaft 41 to realize the connection between the stirring blade 21 and the universal shaft 41. The collar 44 is of an annular 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 side wall of the collar 44. The rotational connection between the collar 44 and the connecting column 45 enables the rotating column 32 to drive the stirring blade 21 to rotate when rotating. The rotational connection between the pull rod 43 and the collar 44 enables the sliding block 42 to drive the stirring blade 21 to rotate around the second axis when sliding. A flexible tube 46 is arranged between the rotating column 32 and the stirring blade 21. Both ends of the flexible tube 46 are adhesively 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.

[0054] Referring to Figure 8 and Figure 9 , two baffles 47 are arranged on both sides of the collar 44 in the horizontal direction. The two baffles 47 are arranged vertically and are spaced parallel to each other. The baffle 47 is parallel to the axis of the rotating column 32 and is welded to the protective shell 38. The outer side wall of the collar 44 abuts against the baffle 47, so that the baffle 47 can limit the collar 44. During the stirring of waste mineral oil, the baffle 47 can apply a supporting force to the collar 44, and then apply a supporting force to the stirring blade 21, reducing the situation that the reaction force received by the stirring blade 21 is completely transmitted to the pull rod 43 and improving the service life of the pull rod 43.

[0055] During the mixing of waste mineral oil, by sliding the sliding block 42 to drive different stirring blades 21 to rotate around the second axis in different directions, 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, improving the mixing effect of the waste mineral oil and the chemical agent.

[0056] On the other hand, in the actual production process, one end of the stirring blade 21 far 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, then the moving speeds of the waste mineral oil at different positions in the mixing tank 1 will be different, which is convenient for generating secondary eddies and further improving the mixing of the waste mineral oil and the chemical agent.

[0057] Referring to Figure 9, in this embodiment, the stirring blades 21 are set in two states. The first state: a plurality of stirring blades 21 are located on the same horizontal plane. In this state, on the one hand, it is applicable to the situation where the waste mineral oil in the blending tank 1 is not full. In this state, since a plurality of stirring blades 21 are at the same height, the force exerted on the stirrer 2 can be relatively reduced, facilitating the stirring of the waste mineral oil with a relatively high viscosity.

[0058] Refer to Figure 12 , the second state: a plurality of stirring blades 21 in the same horizontal plane are divided into two groups, namely the first stirring group and the second stirring group. A plurality of stirring blades 21 in the two groups of stirring blades 21 are arranged in an interleaved manner. It can also be understood that a plurality of stirring blades 21 in one group are arranged at intervals along the circumferential direction of the rotating shaft 22, and the stirring blades 21 in the other group are arranged corresponding to the gaps between two adjacent stirring blades 21 in this group.

[0059] Refer to Figure 6 and Figure 12 , the stirring ends of the stirring blades 21 in the first stirring group are located above the rotating column 32, while the stirring ends of the stirring blades 21 in the second stirring group are located below the rotating column 32. Thus, the stirring ends of the first stirring group and the second stirring group are arranged at intervals in the vertical direction, facilitating the adaptation to the situation where there is more waste mineral oil in the blending tank 1, even in a full liquid state.

[0060] Refer to Figure 9 and Figure 10 , in this embodiment, the variable diameter assembly 4 further includes a driving ring 48, and the driving ring 48 is sleeved on the rotating shaft 22. An annular receiving groove 481 is formed 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. Upper driving grooves 482 corresponding to the stirring blades 21 in the first stirring group are provided on the side wall of the receiving groove 481. The upper driving grooves 482 include a guiding portion 4821, a normal state portion 4822, and an adjusting portion 4823. Both the normal state portion 4822 and the adjusting portion 4823 extend along the circumferential direction of the driving ring 48. The normal state portion 4822 is located below the adjusting portion 4823, and the two normal state portions 4822 and the adjusting portion are arranged at intervals in the circumferential direction of the driving ring 48. The guiding portion 4821 is provided between the two normal state portions 4822 and the adjusting portion 4823, and both ends of the guiding portion 4821 are communicated with the normal state portion 4822 and the adjusting portion 4823 respectively.

[0061] Refer to Figure 9 and Figure 10 , a sliding rod 49 is provided on the sliding block 42. 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. Combine Figure 11, when the sliding rod 49 slides from the normal state part 4822 into the adjusting part 4823, it can drive the sliding block 42 to slide upward, and then can drive the stirring blade 21 to rotate upward.

[0062] Refer to Figure 9 and Figure 10 , a lower driving groove 483 corresponding to the stirring blade 21 in the second stirring group is provided on the side wall of the accommodating groove 481, and the lower driving groove 483 has the same structure as the upper driving groove 482. Combining Figure 11 , the adjusting part 4823 of the lower driving groove 483 is located below the normal state part 4822. When the sliding rod 49 moves from the normal state part 4822 to the adjusting part 4823, it can drive the stirring blade 21 in the second stirring group to rotate downward. 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, which is convenient for adjusting the two groups of stirring blades 21.

[0063] 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 to adjust the angle between the stirring blade 21 and the rotating shaft 22 in the circumferential direction, so as to change the shearing force of the stirring blade 21 on the liquid in the blending tank 1. When the shearing force is large, the resistance received by the stirring blade 21 is small, so that it can adapt to the stirring of waste mineral oil with a large viscosity and improve the applicable range of the blending and preheating equipment.

[0064] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A waste mineral oil blending and preheating device, comprising a blending tank (1) and a stirrer (2) arranged inside the blending tank (1), characterized in that, The stirrer (2) includes a rotating shaft (22) and stirring blades (21). A fixed cylinder (5) is arranged inside the blending tank (1). The inside of the rotating shaft (22) is hollow. The rotating shaft (22) is rotatably sleeved outside the fixed cylinder (5). A spiral blade (53) is arranged inside the fixed cylinder (5). The spiral blade (53) is fixedly connected to the rotating shaft (22). A circulation hole (54) is arranged on the fixed cylinder (5). The circulation hole (54) is located below the rotating shaft (22). The stirring blades (21) are rotatably connected to the rotating shaft (22). The rotation axis of the stirring blades (21) is perpendicular to the rotation axis of the rotating shaft (22).

2. The waste mineral oil blending and preheating equipment according to claim 1, characterized in that, A conical surface (51) is arranged on the outer side wall of the fixed cylinder (5). The conical surface (51) inclines towards the direction close to its own axis in the vertically upward direction. A mating surface (52) that fits the conical surface (51) is arranged on the inner side wall of the rotating shaft (22).

3. The waste mineral oil blending and preheating equipment according to claim 1, characterized in that, An adjusting assembly (3) is arranged on the rotating shaft (22). The adjusting assembly (3) includes an adjusting block (31) and a rotating column (32). The rotating column (32) is of a cylindrical structure. The rotating column (32) is rotatably connected to the rotating shaft (22) around its own axis. The stirring blades (21) are installed on the rotating column (32). The adjusting block (31) is slidably connected to the rotating shaft (22) along the radial direction of the rotating shaft (22). A sliding hole (33) is opened on the adjusting block (31). The adjusting block (31) is sleeved outside the rotating column (32). The sliding of the adjusting block (31) can drive the rotating column (32) to rotate.

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

5. The waste mineral oil blending and preheating equipment according to claim 4, characterized in that The adjusting assembly (3) further includes a synchronous disk (36). The synchronous disk (36) is rotatably sleeved outside the rotating shaft (22). A planar thread (37) is arranged on the side of the synchronous disk (36) close to the adjusting block (31). A thread groove that meshes with the planar thread (37) is opened on the adjusting block (31) corresponding to the planar thread (37).

6. The waste mineral oil blending and preheating equipment according to claim 5, characterized in that, A plurality of tooth grooves are evenly opened on the synchronous disk (36) around its rotation axis. A gear is rotatably connected to the rotating shaft (22). The gear meshes with the tooth grooves.

7. A waste mineral oil blending and preheating device according to claim 3, characterized in that, The rotating column (32) and the stirring blades (21) are connected by a universal shaft (41). The stirring blades (21) can rotate around an axis perpendicular to the axis of the rotating column (32) and parallel to the ground.

8. A waste mineral oil blending and preheating device according to claim 7, characterized in that, A diameter-changing component (4) is arranged on the rotating shaft (22). The diameter-changing component (4) includes a sliding block (42), a pull rod (43) and a collar (44). The collar (44) is rotatably sleeved on the stirring blade (21). The sliding block (42) is slidably connected to the rotating shaft (22) along a direction parallel to the rotating shaft (22). The pull rod (43) is arranged between the collar (44) and the sliding block (42), and two ends of the pull rod (43) are respectively rotatably connected to the sliding block (42) and the collar (44). The sliding of the sliding block (42) can drive the stirring blade (21) to rotate.

9. The waste mineral oil blending and preheating equipment according to claim 8, characterized in that, The diameter-changing component (4) further includes a driving ring (48). The driving ring (48) is connected to the sliding block (42). The rotation of the driving ring (48) can drive the sliding block (42) to slide in the vertical direction.

10. A waste mineral oil blending and preheating device according to claim 9, characterized in that, An upper driving groove (482) is formed in the driving ring (48). The upper driving groove (482) includes an adjusting portion (4823) and a normal state portion (4822). The normal state portion (4822) and the adjusting portion (4823) are spaced apart both in the circumferential direction and the axial direction of the driving ring (48), and the adjusting portion (4823) is located above the normal state portion (4822). A guiding portion (4821) communicating with the normal state portion (4822) and the adjusting portion (4823) is arranged between the normal state portion (4822) and the adjusting portion (4823). A sliding rod (49) is arranged on the sliding block (42). One end of the sliding rod (49) is fixed to the sliding block (42), and the other end is inserted into the upper driving groove (482).

Images