A lithium battery electrolyte drying and black powder separation device and separation method

Abstract

The present invention belongs to the technical field of lithium battery production, and in particular, is a lithium battery electrolyte drying and black powder separation device and separation method, comprising a low-temperature kiln for volatilizing electrolyte from lithium battery fragments, a high-temperature cracking kiln is arranged on one side of the low-temperature kiln, a conveyor belt pipeline is arranged on one side of the high-temperature cracking kiln, a screening shell is fixedly connected to the conveying end of the conveyor belt pipeline, a screening filter mechanism is arranged inside the screening shell, and a vibration mechanism is arranged on the outer surface of the lower end of the screening shell. The lithium battery electrolyte drying and black powder separation device and separation method can fully stir the material and accelerate the separation of black powder and dried electrolyte by rotating the agitator while the agitator is revolving, and the agitator is provided with three groups, so that the electrolyte and black powder can be separated step by step through three filter plates with different aperture sizes, and efficient and energy-saving electrolyte drying and black powder separation can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery production, and in particular to a lithium battery electrolyte drying and black powder separation device and a separation method. Background Art

[0002] In the lithium battery recycling process, black powder refers to the powder composed of electrode materials and conductive agents separated from waste batteries. Black powder usually contains a large amount of valuable metals such as lithium, cobalt, nickel, as well as some waste materials and impurities, so the waste batteries can be mechanically crushed into small particles to release black powder.

[0003] In the production process of lithium batteries, drying of the electrolyte and separation of black powder are key steps. The black powder separation process uses physical methods such as screening, gravity separation, and magnetic separation to remove larger particles and non-metallic impurities. Traditional methods usually rely on complex equipment and multiple treatments, and have problems such as low efficiency and high energy consumption. Therefore, the present invention solves the shortcomings of the above technical problems. Summary of the invention

[0004] Based on the above-mentioned existing technical problems, the present invention proposes a lithium battery electrolyte drying and black powder separation device and separation method.

[0005] The present invention proposes a lithium battery electrolyte drying and black powder separation device, comprising a low-temperature kiln for volatilizing the electrolyte of lithium battery fragments, a high-temperature cracking kiln for carbonizing the diaphragm material and glue on the surface of the lithium battery fragments is arranged on one side of the low-temperature kiln, a conveyor belt pipeline for automatically conveying the lithium battery fragments is arranged on one side of the high-temperature cracking kiln, the conveying end of the conveyor belt pipeline is fixedly connected to a screening shell, a screening and filtering mechanism is arranged inside the screening shell, and a vibration mechanism is arranged on the outer surface of the lower end of the screening shell.

[0006] The screening and filtering mechanism stirs and filters the lithium battery fragments transported to the inside of the screening shell step by step, and purifies the black powder in the lithium battery fragments.

[0007] The vibration mechanism is connected to the screening shell, and drives the screening shell to vibrate at a high frequency, so that the black powder is screened.

[0008] Preferably, the screening shell is composed of a top cylinder, an intermediate cylinder and a bottom cylinder, the lower surface of the top cylinder and the upper surface of the bottom cylinder are slidably plugged with the upper and lower surfaces of the intermediate cylinder respectively, and the outer surfaces of the top cylinder, the intermediate cylinder and the bottom cylinder are locked with connecting hoops.

[0009] Through the above technical solution, the carbonized diaphragm material and glue of lithium battery fragments are transported to the inside of the screening shell for vibration screening. In order to clean the inside of the screening shell later and facilitate reuse, the screening shell is disassembled into three parts and fastened together by connecting clamps to facilitate its installation and disassembly.

[0010] Preferably, the screening and filtering mechanism comprises filter plates respectively fixedly connected to the inner wall of the upper end and the inner wall of the lower end of the intermediate cylinder and fixedly connected to the inner wall of the lower end of the bottom cylinder, and the filter holes of the three filter plates are distributed in sequence from large to small.

[0011] Through the above technical solution, in order to screen the dried lithium battery fragments and extract the black powder inside, the lithium battery fragments enter the screening shell and are filtered through three filter plates in sequence, and finally high-purity black powder is extracted.

[0012] Preferably, the screening and filtering mechanism also includes a rotating rod that passes through the top cylinder, the three filter plates and is rotatably connected to the upper surface of the third filter plate. The rotating rod is respectively fixedly sleeved with three-link rods on the outer surfaces of the top cylinder, the middle cylinder and the bottom cylinder. The surface of the three-link rod is distributed in a circular array and has feeding holes extending therethrough.

[0013] Through the above technical solution, in order to improve the efficiency of lithium battery fragment filtration, the three-link rod inside the top cylinder, the middle cylinder and the bottom cylinder rotate with the rotating rod, thereby stirring the material, so that the material is stirred and filtered step by step through the three filter plates.

[0014] Preferably, the screening and filtering mechanism also includes three driving gears rotatably connected to the outer surface of the rotating rod through bearings, the lower surfaces of the three driving gears are respectively in sliding contact with the upper surfaces of the corresponding three-link rods, the through holes penetrated through the surfaces of the driving gears correspond to the feeding holes, the three support rod surfaces of the three-link rods are respectively rotatably connected to the driving rods, the upper and lower end outer surfaces of the driving rods are respectively fixedly sleeved with linkage gears, and the upper linkage gear is meshed with the driving gear.

[0015] Through the above technical scheme, in order to improve the stirring effect and stirring efficiency of the material, when the three-link rod rotates for stirring, the linkage gear at the upper end of the driving rod engages and transmits on the outer surface of the driving gear, thereby realizing the self-rotation of the driving rod, and the material can be further stirred and filtered.

[0016] Preferably, the screening and filtering mechanism also includes an L-shaped rotating rod which is rotatably connected to the end faces of the three support rods of the three-link rod respectively, the outer surface of the L-shaped rotating rod is fixedly sleeved with a transmission gear which meshes with the linkage gear at the lower end, and the lower surface of one end of the L-shaped rotating rod is fixedly connected with an agitator with an arc-shaped stirring blade.

[0017] Through the above technical scheme, in order to increase the stirring area of ​​the material, the driving rod rotates to drive the lower end linkage gear to rotate, so that the transmission gear meshing with it drives the L-shaped rotating rod to rotate, so that the agitator can rotate while revolving, thereby improving the stirring effect of the material and improving the efficiency of material filtration.

[0018] Preferably, the screening and filtering mechanism also includes a driven gear fixedly sleeved on the outer surface of the upper end of the rotating rod, a driving motor is fixedly installed on the upper surface of the screening shell through a support beam, and the outer surface of the output shaft of the driving motor is fixedly connected to a driving gear through a coupling, and the driving gear is meshed with the driven gear.

[0019] Through the above technical solution, in order to drive the three-link rod and the agitator to rotate stably and achieve the stirring effect, the rotating rod is driven to rotate at a uniform speed through the engagement of the driving gear and the driven gear, and is controlled by the driving motor.

[0020] Preferably, the vibration mechanism includes a double-layer conical discharge pipe fixedly connected to the lower surface of the bottom cylinder, one side surface of the top cylinder, the middle cylinder and the bottom cylinder are fixedly connected to a collecting pipe extending outward, the feed port of the collecting pipe faces the upper surface of the filter plate, the outer surface of the discharge pipe is fixedly sleeved with a vibration plate, and one side surface of the vibration plate is fixedly connected to a vibration motor.

[0021] Through the above technical scheme, in order to collect and reprocess the impurities screened out from each layer of the filter plate, the vibrating shell can discharge the impurities from the screening shell along the collection pipe for collection when it vibrates, and in order to make the screening shell vibrate, the vibration motor is used to make the vibration plate generate a vibration source, so that it drives the discharge pipe and the screening shell to vibrate to realize the screening action.

[0022] Preferably, the upper and lower surfaces of the vibration plate are symmetrically distributed and fixedly connected with buffer telescopic rods, the outer surfaces of the buffer telescopic rods are fixedly sleeved with vibration springs, the outer surfaces of the upper and lower buffer telescopic rods are fixedly connected with U-shaped connecting plates, the outer surface of the vibration plate is provided with a sliding frame, the outer surface of the slide rail of the sliding frame is slidably clamped with a supporting slider, and one side surface of the supporting slider is fixedly connected to one side surface of the connecting plate.

[0023] Through the above technical scheme, in order to support the screening shell and increase the vibration frequency of the screening shell, the screening shell is supported on the inner surface of the connecting plate by a buffer telescopic rod, and as the vibration motor vibrates, high-frequency vibration of the screening shell can be achieved with the assistance of the vibration spring, and when it vibrates, the supporting slider reciprocates on the outer surface of the slide rail of the sliding frame to increase the vibration path of the screening shell, thereby improving the screening and filtering effect of the filter plate.

[0024] Preferably, the vibration mechanism also includes an air duct fixedly connected to one side surface of the discharge pipe, the interior of the air duct is rotatably connected to a fan blade that provides wind force to the inside of the discharge pipe, the other side surface of the discharge pipe is fixedly connected to a discharge pipe for collecting black powder, one side surface of the vibration plate is fixedly connected to a rotating motor, one side surface of the output shaft of the rotating motor is installed with a pulley assembly, and the other end of the pulley assembly is transmission-connected to the outer surface of the rotating shaft of the fan blade.

[0025] Through the above technical scheme, in order to efficiently separate the black powder in the dried lithium battery electrolyte, the fan blades of the air duct are rotated to generate wind inside the discharge pipe, and the impact force of the wind is used to separate the light black powder from the heavier electrolyte. The black powder is discharged and collected through the discharge pipe, and the black powder collected at the lower end of the discharge pipe can be purified by further airflow separation. In order to provide power for the fan blades, the rotating motor drives the fan blades to rotate in the air duct through the pulley assembly. At the same time, the rotating motor will also generate vibration when working, thereby providing a vibration source for the screening shell, thereby improving the screening efficiency of the filter plate.

[0026] The present invention provides a method for drying lithium battery electrolyte and separating black powder from a device, comprising the following steps:

[0027] S1. The lithium battery material containing electrolyte and black powder is fed into the low-temperature kiln through the feed port for drying, so that the water in the electrolyte evaporates. The dried lithium battery fragments automatically enter the high-temperature pyrolysis kiln to carbonize the diaphragm material and glue. The processed fragments become dry powder and are automatically transported to the screening shell through the conveyor belt pipeline;

[0028] S2. After entering the screening shell, the driving motor controls the driving gear to rotate, so that the driven gear meshing with it drives the rotating rod inside the screening shell to rotate, and the three-link rod inside the top cylinder, the middle cylinder and the bottom cylinder rotates with the rotating rod. When the three-link rod rotates and stirs, the linkage gear at the upper end of the driving rod meshes with the outer surface of the driving gear for transmission. After the driving rod rotates by itself and drives the linkage gear at the lower end to rotate, the transmission gear meshing with it drives the L-shaped rotating rod to rotate, so that the agitator can rotate while revolving, so that the material can be fully stirred and the separation of black powder and dried electrolyte can be accelerated;

[0029] S3. When the agitator is working, the buffer telescopic rod supports the screening shell on the inner surface of the connecting plate. With the vibration of the vibration motor, the high-frequency vibration of the screening shell can be achieved with the assistance of the vibration spring. When it vibrates, the supporting slider reciprocates on the outer surface of the slide rail of the sliding frame to improve the vibration path of the screening shell, so that the impurities on each layer of the filter plate can be discharged from the screening shell along the collection pipe for collection and reprocessing;

[0030] S4. When the screened material enters the discharge pipe, the rotating motor drives the fan blades to rotate in the air duct through the pulley assembly, so that the fan blades of the air duct rotate, so that wind is generated inside the discharge pipe, and the impact force of the wind is used to separate the light black powder from the heavier electrolyte. The black powder is discharged and collected through the discharge pipe, and the black powder collected at the lower end of the discharge pipe can be purified by further air flow separation. At the same time, the rotating motor will also generate vibration when working, thereby providing a vibration source for the screening shell, so that the screening efficiency of the filter plate is improved.

[0031] The beneficial effects of the present invention are:

[0032] 1. By setting up a screening and filtering mechanism, the dried electrolyte and black powder can be screened and filtered step by step, so as to improve the purity of the black powder. During the adjustment process, the agitator can rotate while revolving, so that the material can be fully stirred to accelerate the separation of the black powder and the dried electrolyte. The agitator is provided with three groups, and the electrolyte and the black powder can be separated step by step through three filter plates with different aperture sizes, which can realize efficient and energy-saving electrolyte drying and black powder separation, significantly improve production efficiency, and reduce energy consumption and operating costs.

[0033] 2. By setting a vibration mechanism, the vibration path of the screening shell can be improved, thereby improving the screening efficiency of the black powder. During the adjustment process, the high-frequency vibration of the screening shell can be achieved with the assistance of the vibration spring through the vibration of the vibration motor, and when it vibrates, the supporting slider reciprocates on the outer surface of the slide rail of the sliding frame to improve the vibration path of the screening shell, so that the impurities on each layer of the filter plate can be discharged from the screening shell along the collection pipe for collection and reprocessing. At the same time, the fan blades of the air duct rotate to generate wind force inside the discharge pipe, and the impact force of the wind force is used to separate the light black powder from the heavier electrolyte, thereby improving the efficiency of black powder separation and improving the purity of the black powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of a lithium battery electrolyte drying and black powder separation device and separation method proposed by the present invention;

[0035] Figure 2 A three-dimensional diagram of the sliding frame structure of a lithium battery electrolyte drying and black powder separation device and separation method proposed by the present invention;

[0036] Figure 3 A three-dimensional diagram of the collecting tube structure of a lithium battery electrolyte drying and black powder separation device and separation method proposed by the present invention;

[0037] Figure 4 A three-dimensional diagram of the top barrel structure of a lithium battery electrolyte drying and black powder separation device and separation method proposed by the present invention;

[0038] Figure 5 A three-dimensional diagram of the filter plate structure of a lithium battery electrolyte drying and black powder separation device and separation method proposed by the present invention;

[0039] Figure 6 A three-dimensional diagram of the rotating rod structure of a lithium battery electrolyte drying and black powder separation device and separation method proposed by the present invention;

[0040] Figure 7 A three-dimensional diagram of the driving gear structure of a lithium battery electrolyte drying and black powder separation device and separation method proposed by the present invention;

[0041] Figure 8 A three-dimensional diagram of a three-link structure of a lithium battery electrolyte drying and black powder separation device and separation method proposed by the present invention;

[0042] Fig. 9 A three-dimensional diagram of the vibration mechanism structure of a lithium battery electrolyte drying and black powder separation device and separation method proposed by the present invention;

[0043] Fig.10 A stereoscopic diagram of the discharge pipe structure of a lithium battery electrolyte drying and black powder separation device and separation method proposed by the present invention;

[0044] Fig.11 A three-dimensional diagram of the fan blade structure of a lithium battery electrolyte drying and black powder separation device and separation method proposed by the present invention;

[0045] Fig.12 This is a three-dimensional diagram of the connecting plate structure of a lithium battery electrolyte drying and black powder separation device and separation method proposed by the present invention.

[0046] In the figure: 1. low temperature kiln; 2. high temperature cracking kiln; 3. conveyor belt pipeline; 4. screening shell; 41. top cylinder; 42. middle cylinder; 43. bottom cylinder; 44. connecting hoop; 5. screening and filtering mechanism; 51. filter plate; 52. rotating rod; 53. three-link rod; 54. feeding hole; 55. driving gear; 56. driving rod; 57. linkage gear; 58. L-shaped rotating rod; 59. transmission gear; 60. agitator; 61. driven gear; 62. driving motor; 63. driving gear; 7. vibration mechanism; 71. discharge pipe; 72. collecting pipe; 73. vibration plate; 74. vibration motor; 75. buffer telescopic rod; 76. vibration spring; 77. connecting plate; 78. sliding frame; 79. supporting slider; 80. air duct; 81. fan blade; 82. discharge pipe; 83. rotating motor; 84. pulley assembly. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0048] Reference Figure 1-Figure 12 A lithium battery electrolyte drying and black powder separation device comprises a low-temperature kiln 1 for volatilizing the electrolyte of lithium battery fragments, a high-temperature cracking kiln 2 for carbonizing the diaphragm material and glue on the surface of the lithium battery fragments is arranged on one side of the low-temperature kiln 1, a conveyor belt pipeline 3 for automatically conveying the lithium battery fragments is arranged on one side of the high-temperature cracking kiln 2, a conveying end of the conveyor belt pipeline 3 is fixedly connected to a screening shell 4, a screening and filtering mechanism 5 is arranged inside the screening shell 4, and a vibration mechanism 7 is arranged on the outer surface of the lower end of the screening shell 4.

[0049] The carbonized diaphragm material and glue of the lithium battery fragments are then transported to the interior of the screening shell 4 for vibration screening. In order to clean the interior of the screening shell 4 later and facilitate reuse, the screening shell 4 is composed of a top cylinder 41, an intermediate cylinder 42, and a bottom cylinder 43. The lower surface of the top cylinder 41 and the upper surface of the bottom cylinder 43 are slidably plugged with the upper and lower surfaces of the intermediate cylinder 42 respectively. The outer surfaces of the top cylinder 41, the intermediate cylinder 42, and the bottom cylinder 43 are locked with a connecting clamp 44. The screening shell 4 is disassembled into three parts and fastened together by the connecting clamp 44 to facilitate its installation and disassembly.

[0050] The screening and filtering mechanism 5 stirs and filters the lithium battery fragments transported to the inside of the screening shell 4 step by step, and purifies the black powder in the lithium battery fragments.

[0051] In order to screen the dried lithium battery fragments and extract the black powder inside, the screening and filtering mechanism 5 includes filter plates 51 fixedly connected to the inner wall of the upper end and the inner wall of the lower end of the intermediate cylinder 42 and fixedly connected to the inner wall of the lower end of the bottom cylinder 43. The filter holes of the three filter plates 51 are distributed in sequence from large to small. After the lithium battery fragments enter the screening shell 4, they are filtered through the three filter plates 51 in sequence, and finally high-purity black powder is extracted.

[0052] In order to improve the efficiency of filtering lithium battery fragments, the screening and filtering mechanism 5 also includes a rotating rod 52 that penetrates the top cylinder 41, the three filter plates 51 and is rotatably connected to the upper surface of the third filter plate 51. The rotating rod 52 is fixedly sleeved with a triple rod 53 on the outer surfaces of the top cylinder 41, the middle cylinder 42, and the bottom cylinder 43 respectively. The surface of the triple rod 53 is distributed in a circular array and has a feeding hole 54 penetrated therethrough. The triple rod 53 inside the top cylinder 41, the middle cylinder 42, and the bottom cylinder 43 rotates with the rotating rod 52, thereby stirring the material, so that the material is stirred and filtered step by step through the three filter plates 51.

[0053] In order to improve the stirring effect and stirring efficiency of the material, the screening and filtering mechanism 5 also includes three driving gears 55 rotatably connected to the outer surface of the rotating rod 52 through bearings, the lower surfaces of the three driving gears 55 are respectively in sliding contact with the upper surfaces of the corresponding three-link rods 53, the through holes opened on the surfaces of the driving gears 55 correspond to the feeding holes 54, the three support rod surfaces of the three-link rod 53 are respectively rotatably connected with driving rods 56, the upper and lower end outer surfaces of the driving rod 56 are respectively fixedly sleeved with linkage gears 57, and the upper end linkage gear 57 is meshed with the driving gear 55. When the three-link rod 53 is rotated and stirred, the linkage gear 57 at the upper end of the driving rod 56 is meshed and transmitted with the outer surface of the driving gear 55, thereby realizing the self-rotation of the driving rod 56, and the material can be further stirred and filtered.

[0054] In order to increase the stirring area of ​​the material stirring, the screening and filtering mechanism 5 also includes an L-shaped rotating rod 58 which is rotatably connected to the end faces of the three support rods of the three-link rod 53 respectively. The outer surface of the L-shaped rotating rod 58 is fixedly sleeved with a transmission gear 59 which meshes with the lower end linkage gear 57. The lower surface of one end of the L-shaped rotating rod 58 is fixedly connected with an agitator 60 with an arc-shaped stirring blade. After the driving rod 56 rotates to drive the lower end linkage gear 57 to rotate, the transmission gear 59 which meshes with it drives the L-shaped rotating rod 58 to rotate, so that the agitator 60 can rotate while revolving, thereby improving the stirring effect of the material and improving the efficiency of material filtration.

[0055] In order to drive the three-link rod 53 and the agitator 60 to rotate stably and achieve the stirring effect, the screening and filtering mechanism 5 also includes a driven gear 61 fixedly sleeved on the outer surface of the upper end of the rotating rod 52. The upper surface of the screening shell 4 is fixedly installed with a driving motor 62 through a support beam. The outer surface of the output shaft of the driving motor 62 is fixedly connected with a driving gear 63 through a coupling. The driving gear 63 is meshed with the driven gear 61. The meshing of the driving gear 63 and the driven gear 61 drives the rotating rod 52 to rotate at a uniform speed and is controlled by the driving motor 62.

[0056] By setting up the screening and filtering mechanism 5, the dried electrolyte and black powder can be screened and filtered step by step, so as to improve the purity of the black powder. During the adjustment process, the agitator 60 rotates while revolving, so that the material can be fully stirred to accelerate the separation of the black powder and the dried electrolyte. The agitator 60 is provided with three groups, and the electrolyte and the black powder can be separated step by step through three filter plates 51 with different pore sizes, which can realize efficient and energy-saving electrolyte drying and black powder separation, significantly improve production efficiency, and reduce energy consumption and operating costs.

[0057] The vibration mechanism 7 is connected to the screening housing 4 and drives the screening housing 4 to vibrate at a high frequency, so that the black powder is screened.

[0058] In order to collect and reprocess the impurities screened out on each layer of the filter plate 51, the vibration mechanism 7 includes a double-layer conical discharge pipe 71 fixedly connected to the lower surface of the bottom cylinder 43, and one side surface of the top cylinder 41, the middle cylinder 42, and the bottom cylinder 43 are fixedly connected with a collecting pipe 72 extending outward, and the feed port of the collecting pipe 72 faces the upper surface of the filter plate 51. The outer surface of the discharge pipe 71 is fixedly sleeved with a vibration plate 73, and one side surface of the vibration plate 73 is fixedly connected with a vibration motor 74. When the vibration shell vibrates, the impurities can be discharged from the screening shell 4 along the collection pipe 72 for collection. In order to make the screening shell 4 vibrate, the vibration motor 74 is used to make the vibration plate 73 generate a vibration source, so that it drives the discharge pipe 71 and the screening shell 4 to vibrate to achieve the screening action.

[0059] In order to support the screening shell 4 and increase the vibration frequency of the screening shell 4, the upper and lower surfaces of the vibration plate 73 are symmetrically distributed and fixedly connected with buffer telescopic rods 75, the outer surfaces of the buffer telescopic rods 75 are fixedly sleeved with vibration springs 76, the outer surfaces of the upper and lower buffer telescopic rods 75 are fixedly connected with U-shaped connecting plates 77, and the outer surface of the vibration plate 73 is provided with a sliding frame 78, and the outer surface of the slide rail of the sliding frame 78 is slidably clamped with a supporting slider 79, and one side surface of the supporting slider 79 is fixedly connected to one side surface of the connecting plate 77. The screening shell 4 is supported on the inner surface of the connecting plate 77 by the buffer telescopic rod 75. With the vibration of the vibration motor 74, high-frequency vibration of the screening shell 4 can be achieved with the assistance of the vibration springs 76, and when it vibrates, the supporting slider 79 reciprocates on the outer surface of the slide rail of the sliding frame 78 to increase the vibration path of the screening shell 4, thereby improving the screening and filtering effect of the filter plate 51.

[0060] In order to efficiently separate the black powder in the dried lithium battery electrolyte, the vibration mechanism 7 also includes an air duct 80 fixedly connected to the surface of one side of the discharge pipe 71, and the inside of the air duct 80 is rotatably connected to a fan blade 81 that provides wind force to the inside of the discharge pipe 71, and the other side of the discharge pipe 71 is fixedly connected to a discharge pipe 82 for collecting black powder. A rotating motor 83 is fixedly connected to the surface of one side of the vibration plate 73, and a pulley assembly 84 is installed on the surface of one side of the output shaft of the rotating motor 83, and the other end of the pulley assembly 84 is drivingly connected to the outer surface of the rotating shaft of the fan blade 81. The fan blades 81 of the air duct 80 rotate, so that wind is generated inside the discharge pipe 71, and the impact force of the wind is used to separate the light black powder from the heavier electrolyte. The black powder is discharged and collected through the discharge pipe 82, and the black powder collected at the lower end of the discharge pipe 71 can be purified by further air flow separation. In order to provide power for the fan blades 81, the rotating motor 83 drives the fan blades 81 to rotate in the air duct 80 through the pulley assembly 84. At the same time, the rotating motor 83 also generates vibration when working, thereby providing a vibration source for the screening shell 4, so that the screening efficiency of the filter plate 51 is improved.

[0061] By setting the vibration mechanism 7, the vibration path of the screening shell 4 can be improved, thereby improving the screening efficiency of the black powder. During the adjustment process, through the vibration of the vibration motor 74, the high-frequency vibration of the screening shell 4 can be achieved with the assistance of the vibration spring 76, and when it vibrates, the support slider 79 reciprocates on the outer surface of the slide rail of the sliding frame 78 to improve the vibration path of the screening shell 4, so that the impurities on each layer of the filter plate 51 can be discharged from the screening shell 4 along the collecting pipe 72 for collection and reprocessing. At the same time, the fan blades 81 of the air duct 80 rotate to generate wind force inside the discharge pipe 71, and the impact force of the wind force is used to separate the light black powder from the heavier electrolyte, thereby improving the efficiency of black powder separation and improving the purity of the black powder.

[0062] Reference Figure 1-Figure 12 , a method for drying lithium battery electrolyte and separating black powder from a device, comprising the following steps:

[0063] S1, feeding the lithium battery material containing electrolyte and black powder into the low-temperature kiln 1 through the feed port thereof for drying, so that the water content of the electrolyte evaporates, and the dried lithium battery fragments automatically enter the high-temperature pyrolysis kiln 2 to carbonize the diaphragm material and glue, and the processed fragments become dry powder and are automatically transported to the screening shell 4 through the conveyor belt pipeline 3;

[0064] S2. After entering the screening housing 4, the driving motor 62 controls the driving gear 63 to rotate, so that the driven gear 61 meshing with it drives the rotating rod 52 inside the screening housing 4 to rotate, and the three-link rod 53 inside the top cylinder 41, the middle cylinder 42, and the bottom cylinder 43 rotates with the rotating rod 52. When the three-link rod 53 rotates and stirs, the linkage gear 57 at the upper end of the driving rod 56 meshes with the outer surface of the driving gear 55 for transmission. After the driving rod 56 rotates and drives the lower end linkage gear 57 to rotate, the transmission gear 59 meshing with it drives the L-shaped rotating rod 58 to rotate, so that the agitator 60 can rotate while revolving, so that the material can be fully stirred and the separation of black powder and dried electrolyte can be accelerated;

[0065] S3. When the agitator 60 is working, the buffer telescopic rod 75 supports the screening housing 4 on the inner surface of the connecting plate 77. With the vibration of the vibration motor 74, the high-frequency vibration of the screening housing 4 can be achieved with the assistance of the vibration spring 76. When it vibrates, the support slider 79 reciprocates on the outer surface of the slide rail of the slide frame 78 to improve the vibration path of the screening housing 4, so that the impurities on each layer of the filter plate 51 can be discharged from the screening housing 4 along the collection pipe 72 for collection and reprocessing;

[0066] S4. When the screened material enters the discharge pipe 71, the rotating motor 83 drives the fan blade 81 to rotate in the air duct 80 through the pulley assembly 84, so that the fan blade 81 of the air duct 80 rotates, so that wind is generated inside the discharge pipe 71, and the impact force of the wind is used to separate the light black powder from the heavier electrolyte. The black powder is discharged and collected through the discharge pipe 82, and the black powder collected at the lower end of the discharge pipe 71 can be purified by further air flow separation. At the same time, the rotating motor 83 will also generate vibration when working, thereby providing a vibration source for the screening shell 4, so that the screening efficiency of the filter plate 51 is improved.

[0067] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lithium battery electrolyte drying and black powder separation device, comprising a low-temperature kiln (1) for volatilizing the electrolyte of lithium battery fragments, characterized in that: A high-temperature cracking kiln (2) for carbonizing the diaphragm material and glue on the surface of the lithium battery fragments is arranged on one side of the low-temperature kiln (1); a conveyor belt pipeline (3) for automatically conveying the lithium battery fragments is arranged on one side of the high-temperature cracking kiln (2); a conveying end of the conveyor belt pipeline (3) is fixedly connected to a screening shell (4); the screening shell (4) is composed of a top cylinder (41), an intermediate cylinder (42), and a bottom cylinder (43); a screening and filtering mechanism (5) is arranged inside the screening shell (4); and a vibration mechanism (7) is arranged on the outer surface of the lower end of the screening shell (4); The lower surface of the top tube (41) and the upper surface of the bottom tube (43) are respectively slidably plugged into the upper and lower surfaces of the middle tube (42), and the outer surfaces of the top tube (41), the middle tube (42) and the bottom tube (43) are locked with connecting clamps (44); The screening and filtering mechanism (5) stirs and filters the lithium battery fragments transported to the inside of the screening shell (4) step by step, and purifies the black powder in the lithium battery fragments; the screening and filtering mechanism (5) comprises filter plates (51) respectively fixedly connected to the inner side wall of the upper end and the inner side wall of the lower end of the intermediate cylinder (42) and fixedly connected to the inner side wall of the lower end of the bottom cylinder (43); the screening and filtering mechanism (5) further comprises a rotating rod (52) penetrating the top cylinder (41) and the three filter plates (51) and rotatably connected to the upper surface of the third filter plate (51); the rotating rod (52) is respectively fixedly sleeved with a triple rod (53) on the outer surfaces inside the top cylinder (41), the intermediate cylinder (42) and the bottom cylinder (43); the screening and filtering mechanism (5) further comprises an L-shaped rotating rod (58) rotatably connected to the end surfaces of the three supporting rods of the triple rod (53); the lower surface of one end of the L-shaped rotating rod (58) is fixedly connected to a stirrer (60) with an arc-shaped stirring blade; The screening and filtering mechanism (5) further comprises a driven gear (61) fixedly sleeved on the outer surface of the upper end of the rotating rod (52); a driving motor (62) is fixedly mounted on the upper surface of the screening housing (4) via a support beam; a driving gear (63) is fixedly connected to the outer surface of the output shaft of the driving motor (62) via a coupling; the driving gear (63) meshes with the driven gear (61); The vibration mechanism (7) is connected to the screening housing (4) and drives the screening housing (4) to vibrate at a high frequency so as to complete the screening of the black powder. The vibration mechanism (7) comprises a double-layer conical discharge pipe (71) fixedly connected to the lower surface of the bottom cylinder (43). A vibration plate (73) is fixedly sleeved on the outer surface of the discharge pipe (71). A vibration motor (74) is fixedly connected to one side surface of the vibration plate (73). The vibration mechanism (7) further comprises an air duct (80) fixedly connected to one side surface of the discharge pipe (71). A rotating motor (83) is fixedly connected to one side surface of the vibration plate (73). One side surface of the top cylinder (41), the middle cylinder (42), and the bottom cylinder (43) are all fixedly connected to a collecting pipe (72) extending outward, and a feed port of the collecting pipe (72) faces the upper surface of the filter plate (51); The upper and lower surfaces of the vibration plate (73) are symmetrically distributed and fixedly connected with buffer telescopic rods (75), the outer surfaces of the buffer telescopic rods (75) are fixedly sleeved with vibration springs (76), the outer surfaces of the upper and lower buffer telescopic rods (75) are fixedly connected with U-shaped connecting plates (77), the outer surface of the vibration plate (73) is provided with a sliding frame (78), the outer surface of the slide rail of the sliding frame (78) is slidably clamped with a supporting slider (79), and one side surface of the supporting slider (79) is fixedly connected to one side surface of the connecting plate (77); The air duct (80) is rotatably connected to a fan blade (81) for providing wind force to the inside of the discharge pipe (71); the other side surface of the discharge pipe (71) is fixedly connected to a discharge pipe (82) for collecting black powder; a pulley assembly (84) is mounted on one side surface of the output shaft of the rotary motor (83); the other end of the pulley assembly (84) is drivingly connected to the outer surface of the rotating shaft of the fan blade (81).

2. The lithium battery electrolyte drying and black powder separation equipment according to claim 1, characterized in that: The filter holes of the three filter plates (51) are distributed in order from large to small.

3. The lithium battery electrolyte drying and black powder separation equipment according to claim 2, characterized in that: The surface of the three-link rod (53) is provided with material passing holes (54) distributed in a circular array and extending therethrough.

4. The lithium battery electrolyte drying and black powder separation equipment according to claim 3, characterized in that: The screening and filtering mechanism (5) further comprises three driving gears (55) rotatably connected to the outer surface of the rotating rod (52) via bearings, the lower surfaces of the three driving gears (55) respectively being in sliding contact with the upper surfaces of the corresponding three-link rods (53), the through holes formed through the surfaces of the driving gears (55) corresponding to the material passing holes (54), the surfaces of the three supporting rods of the three-link rod (53) respectively being rotatably connected to driving rods (56), the outer surfaces of the upper and lower ends of the driving rods (56) respectively being fixedly sleeved with linkage gears (57), the linkage gear (57) at the upper end being meshed with the driving gear (55).

5. The lithium battery electrolyte drying and black powder separation equipment according to claim 4, characterized in that: The outer surface of the L-shaped rotating rod (58) is fixedly sleeved with a transmission gear (59) which meshes with the linkage gear (57) at the lower end.

6. A separation method applied to the lithium battery electrolyte drying and black powder separation device according to claim 5, comprising the following steps: S1, feeding lithium battery materials containing electrolyte and black powder into the low-temperature kiln (1) through the feed port thereof for drying, so that the water content of the electrolyte evaporates, and the dried lithium battery fragments automatically enter the high-temperature pyrolysis kiln (2) to carbonize the diaphragm material and glue, and the processed fragments become dry powder and are automatically transported to the screening shell (4) through the conveyor belt pipeline (3); S2. After entering the screening housing (4), the driving motor (62) controls the driving gear (63) to rotate, so that the driven gear (61) meshing with it drives the rotating rod (52) inside the screening housing (4) to rotate, and then the three-linked rod (53) inside the top cylinder (41), the middle cylinder (42), and the bottom cylinder (43) rotates along with the rotating rod (52). When the three-linked rod (53) rotates and stirs, the linkage gear (57) at the upper end of the driving rod (56) meshes with the outer surface of the driving gear (55) for transmission. Then, the driving rod (56) rotates by itself to drive the linkage gear (57) at the lower end to rotate, so that the transmission gear (59) meshing with it drives the L-shaped rotating rod (58) to rotate, so that the agitator (60) can rotate by itself while revolving, so that the material can be fully stirred and the separation of black powder and dried electrolyte can be accelerated; S3, while the agitator (60) is working, the buffer telescopic rod (75) supports the screening housing (4) on the inner surface of the connecting plate (77), and with the vibration of the vibration motor (74), the screening housing (4) can be vibrated at a high frequency with the assistance of the vibration spring (76), and when it vibrates, the support slider (79) reciprocates on the outer surface of the slide rail of the slide frame (78) to increase the vibration path of the screening housing (4), so that impurities on each layer of the filter plate (51) can be discharged from the screening housing (4) along the collection pipe (72) for collection and reprocessing; S4. When the screened material enters the discharge pipe (71), the rotating motor (83) drives the fan blade (81) to rotate in the air duct (80) through the pulley assembly (84), so that the fan blade (81) of the air duct (80) rotates, so that wind force is generated inside the discharge pipe (71). The impact force of the wind force is used to separate the light black powder from the heavier electrolyte. The black powder is discharged and collected through the discharge pipe (82), and the black powder collected at the lower end of the discharge pipe (71) can be purified by further air flow separation. At the same time, the rotating motor (83) also generates vibration when working, thereby providing a vibration source for the screening shell (4), so that the screening efficiency of the filter plate (51) is improved.

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