Electrolyte lithium salt packaging barrel residual material recycling device and method

Abstract

The present application relates to a kind of electrolyte lithium salt packing barrel residual material recovery device and method, and there is provided with turnover clamping mechanism between low-position conveying transmission roller and high-position conveying transmission roller, which can transfer one or more lithium salt barrels to be blown from low-position conveying transmission roller to high-position conveying transmission roller, and the ball valve of lithium salt barrel changes from facing downwards to facing upwards;The top of lithium salt barrel to be blown located in high-position conveying transmission roller is acted by lifting pressure barrel mechanism and the bottom is acted by lifting rotation mechanism;Nitrogen gas output by nitrogen gas conveying mechanism enters into lithium salt barrel and blows out granular lithium salt to clean lithium salt barrel.The present application replaces traditional manual recovery of lithium salt, which can automatically dock lithium salt barrel to recover lithium salt to specified recovery tank, realizes automatic conveying of stainless steel barrel, automatic overturning, automatic docking pipeline, automatic purging, barrel body is completely cleaned and will not cause harm to human body.Process flow is wasteless, which saves cost for customers and improves profit.

Description

Technical Field

[0001] This invention relates to the field of lithium battery lithium salt container residue recycling, and in particular to a device and method for recycling electrolyte lithium salt packaging container residue. Background Technology

[0002] As an important component of lithium-ion batteries, lithium electrolytes are typically stored in specially structured 112L stainless steel drums. Due to the extremely high cost of raw materials in electrolyte production, the drums must be purged and recycled in order to achieve the goal of recycling lithium salts while ensuring quality.

[0003] The traditional method involves manually connecting the lithium salt container's piping. When manually connecting the stainless steel container's piping, residual lithium salt can easily splash out of the pipe, causing pollution and potentially harming the human body, posing a certain safety hazard. Furthermore, the residual lithium salt in the container may crystallize upon contact with air, which can adversely affect subsequent battery processing and reduce the battery yield. Summary of the Invention

[0004] This invention designs a device and method for recycling residual materials from electrolyte lithium salt packaging barrels. The technical problem it solves is that in the existing technology, when manually connecting the pipeline of the lithium salt barrel, the residual lithium salt in the pipeline can easily splash out from the pipeline, causing pollution and potentially harming the human body, posing certain safety hazards. Furthermore, the residual lithium salt in the barrel may crystallize upon contact with air, which can adversely affect the subsequent battery processing and reduce the battery yield.

[0005] To solve the aforementioned technical problems, the present invention adopts the following solution: A device for recycling residual materials from electrolyte lithium salt packaging drums is characterized by: comprising a low-level conveying drive roller and a high-level conveying drive roller; a flipping clamping mechanism is provided between the low-level and high-level conveying drive rollers to transfer one or more lithium salt drums to be cleaned from the low-level conveying drive roller to the high-level conveying drive roller, and the ball valve of the lithium salt drum changes from facing downwards to facing upwards; the top of the lithium salt drum to be cleaned located on the high-level conveying drive roller is acted upon by a lifting and pressing mechanism, and the bottom is acted upon by a lifting and rotating mechanism; the lifting and pressing mechanism pre-presses the lithium salt drum to prevent it from tipping over during rotation, and also fixes the lithium salt drum so that it is fixed and does not move under the action of cleaning gas; the lifting and rotating mechanism not only enables the forward purging of the nitrogen conveying mechanism to connect with the ball valve to realize the entry and exit of nitrogen into the lithium salt drum, but also enables the gas connecting pipe of the lithium salt drum to rotate to a position to dock with the forward purging inlet pipe of the nitrogen conveying mechanism; the nitrogen output from the nitrogen conveying mechanism enters the lithium salt drum and blows out the particulate lithium salt and cleans the lithium salt drum.

[0006] Preferably, it also includes a pulse dust collector. The first input end of the pulse dust collector is connected to the ball valve of the lithium salt tank through a forward purging exit pipe, and the second input end of the pulse dust collector is connected to the nitrogen source of the nitrogen delivery mechanism through a cleaning pipe. The pulse nitrogen generated in the cleaning pipe separates the particulate lithium salt from the adsorbent in the pulse dust collector. After separation, the particulate lithium salt falls into the dust collection tank below the pulse dust collector through the first output end. The second output end of the pulse dust collector is a nitrogen recovery pipeline.

[0007] Preferably, the flipping clamping mechanism includes a servo transmission mechanism, an upper and lower clamping mechanism, and a left and right limiting mechanism. The lithium salt barrel enters between the left and right clamping arms of the left and right limiting mechanism. Either of the upper and lower clamping arms of the upper and lower clamping mechanism moves relative to each other through a clamping drive cylinder to clamp the top and bottom of the lithium salt barrel. The rotating shaft of the servo transmission mechanism is fixedly connected to the upper and lower clamping mechanism and / or the left and right limiting mechanism, so that the lithium salt barrel can rotate 180°.

[0008] Preferably, the lifting and pressing mechanism includes a fixed bracket located above the lithium salt tank; a pressing cylinder is fixed on the fixed bracket, and the cylinder rod of the pressing cylinder is connected to the pressing plate. During pre-pressing, the pressing plate presses the lithium salt tank but does not affect the rotation of the lithium salt tank; during fixed pressing, the pressing plate presses down on the lithium salt tank to prevent it from moving.

[0009] Preferably, a positioning mechanism is provided between two adjacent lithium salt barrels on the high-level conveying drive roller. The positioning mechanism is automatically raised by a blocking cylinder, so that the V-shaped positioning block blocks the body of the lithium salt barrel to achieve the effect of centering the barrel opening.

[0010] Preferably, the lifting and rotating mechanism includes a barrel opening positioning seat, in which a sealing ring is provided around the air outlet. The air outlet is connected to the forward purging exit pipe. The ball valve of the lithium salt barrel is aligned with the air outlet and sealed by the sealing ring. The bottom of the barrel opening positioning seat is a lifting base plate. A lifting cylinder is installed on the support base. The cylinder rod of the lifting cylinder is connected to the lifting base plate, so that the barrel opening positioning seat can move vertically to press the ball valve.

[0011] Preferably, the lithium salt tank has a ring at the bottom with an opening, and a conical bottom inside the ring. A ball valve is located at the end of the conical bottom, and a gas connection pipe extends from the conical bottom, connecting to the forward purge inlet pipe. The gas connection pipe's location within the opening facilitates automatic or manual connection between the forward purge inlet pipe and the gas connection pipe. A tank opening positioning seat is coaxially connected to a driven gear, which meshes with a drive gear. The drive gear is connected to the shaft of a rotary motor, which is mounted on a lifting base plate. Rotation of the tank opening positioning seat causes the lithium salt tank to rotate. A rotary sensor detects the opening position of the lithium salt tank. The control unit, based on the opening position determined by the rotary sensor, activates the rotary motor, causing the gas connection pipe within the opening to rotate to a preset position for automatic or manual connection to the forward purge inlet pipe.

[0012] Preferably, one end of the forward purging inlet pipe is connected to a nitrogen gas source, and the other end of the forward purging inlet pipe is connected to the gas connection pipes of multiple lithium salt tanks through multiple parallel pipes A respectively. The ball valves of the multiple lithium salt tanks are connected to the forward purging outlet pipe through multiple parallel pipes B respectively. One end of the cleaning pipe is connected to the forward purging inlet pipe. The forward purging inlet pipe is equipped with a shut-off valve and a pressure reducing valve. A dew point meter is connected in parallel to the forward purging outlet pipe.

[0013] A method for recycling residues from electrolyte lithium salt packaging drums includes the following steps: Step 1, Loading the barrel: After placing the lithium salt barrel on the low-position conveyor roller conveyor line, the low-position conveyor roller conveyor line will automatically transport the lithium salt barrel to the barrel unloading station. Step 2, dismantle the drum: At the drum dismantling station, remove the blind flange of the ball valve; Step 3, barrel flipping: At the barrel flipping station, the lithium salt barrel is flipped and transferred to the high-level conveyor roller by the flipping clamping mechanism, and the ball valve is turned downwards; Step 4, Nitrogen purging: Step 41: When the lithium salt barrel is delivered to the nitrogen purging station, after the detection switch detects that there is a barrel, the positioning mechanism automatically rises through the blocking cylinder, so that the V-shaped positioning block blocks the body of the lithium salt barrel to achieve the effect of centering the barrel opening. Step 42: The lifting cylinder of the lifting and rotating mechanism lifts the lithium salt barrel through the barrel opening positioning seat, and the ball valve automatically connects with the pipeline; the lifting and pressing mechanism first pre-presses the lithium salt barrel. Step 43: The lifting and rotating mechanism's rotating motor drives the lithium salt tank to rotate. The opening position of the tank ring is determined by the rotating drum sensor. The gas connection pipe is oriented towards the operating position. The gas connection pipe is automatically or manually connected directly or indirectly to the forward purging inlet pipe. Step 44: Afterwards, the lifting and pressing mechanism presses the lithium salt tank firmly and keeps it stationary. After opening the gas connection pipe and ball valve, the nitrogen purging operation begins. The residual lithium salt leaves the pipeline through the forward purging and is transported to the pulse dust collector. The dust collection tank below the pulse dust collector collects the lithium salt particles. The exhaust gas passes through the filter and is discharged into the nitrogen recovery pipeline. Step 5, Loading the barrel: After purging, close the ball valve on the lithium salt barrel and press the release button; Step 6, Tilting the barrel: The lithium salt barrel is flipped 180° by the tilting clamping mechanism and transported to the barrel loading station of the low-position conveying drive roller to assemble the blind plate of the ball valve. Step 7, Lowering the bucket: The low-position conveyor roller conveyor line transports the lithium salt bucket to the lower bucket position, completing the lowering of the bucket.

[0014] The device and method for recycling residual materials from electrolyte lithium salt packaging barrels have the following beneficial effects: (1) This invention replaces the traditional manual lithium salt recycling method. It can automatically connect lithium salt barrels to designated recycling tanks, realize automatic conveying, automatic tilting, automatic pipeline connection, and automatic purging of stainless steel barrels. The barrels are thoroughly cleaned and will not cause harm to the human body. It also achieves zero waste in the process, saving costs and increasing profits for customers.

[0015] (2) For lithium salt barrels used in transportation and recycling, the present invention has a barrel opening facing upwards during the transfer. When the barrel is automatically purged, its position must be changed to a barrel opening facing downwards. Then, the pipeline is automatically connected by the lifting mechanism, the stainless steel barrel is pressed by the pressing mechanism, and the inner wall of the barrel is purged 360° without dead angles by nitrogen.

[0016] (3) The tailings generated by this invention meet environmental protection requirements. The residual lithium salt is recovered into the designated material bucket through the pulse dust collector via the pipeline, and the exhaust gas is filtered and discharged into the designated pipeline. Attached Figure Description

[0017] Figure 1 : Schematic diagram of the electrolyte lithium salt packaging barrel structure in this invention; Figure 2 Schematic diagram of the flipping clamping mechanism in this invention Figure 1 ; Figure 3 Schematic diagram of the flipping clamping mechanism in this invention Figure 2 ; Figure 4 : Schematic diagram of the arrangement of peripheral components of the high-level conveyor roller in this invention; Figure 5 : A schematic diagram of the electrolyte lithium salt packaging barrel in the purging state in this invention; Figure 6 : A three-dimensional structural diagram of the lifting and rotating mechanism in this invention; Figure 7 The diagram shows the internal drive structure. Figure 8 : A schematic diagram of component connections in Embodiment 1 of the purging system of this invention; Figure 9 : Schematic diagram of component connections in embodiment 2 of the purging system of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1—Lithium salt container; 11—Ball valve; 12—Container ring; 13—Opening; 14—Gas connection pipe; 21—Servo transmission mechanism; 22—Upper and lower clamping mechanism; 221—Clamping drive cylinder; 23—Left and right limit mechanism; 24—High-position conveying transmission roller; 25—Low-position conveying transmission roller; 3—Lifting and pressing barrel mechanism; 31—Pressure barrel cylinder; 32—Pressure plate; 33—Fixed bracket; 4—Positioning mechanism; 5—Nitrogen delivery mechanism; 51—Shut-off valve; 52—Pressure reducing valve; 53—Remote pressure gauge; 54—Dew point meter; 55—Pipe cleaning; 56—Reverse purging into the pipe; 57—Reverse purging out of the pipe; 58—Forward purging into the pipe; 59—Forward purging out of the pipe; 6—Lifting and rotating mechanism; 61—Lifting cylinder; 62—Lifting base plate; 63—Barrel opening positioning seat; 64—Air outlet; 65—Rotating motor; 66—Support seat; 67—Drive gear; 68—Driven gear; 69—Sealing ring; 7—Pulse dust collector; 8—Dust collection tank; 9—Nitrogen recovery pipeline. Detailed Implementation

[0019] The following is combined with Figures 1 to 9 The present invention will be further described as follows: This invention relates to a lithium salt packaging barrel residue recycling device, comprising a low-level conveying roller 25 and a high-level conveying roller 24. A flipping clamping mechanism is provided between the low-level conveying roller 25 and the high-level conveying roller 24 to transfer one or more lithium salt barrels 1 to be washed from the low-level conveying roller 25 to the high-level conveying roller 24, and the ball valve 11 of the lithium salt barrel 1 changes from facing downward to facing upward. The top of the lithium salt barrel 1 to be washed located on the high-level conveying roller 24 is acted upon by a lifting and pressing mechanism 3, and the bottom is acted upon by a lifting and rotating mechanism 6. Similarly, the flipping clamping mechanism can also transfer one or more washed lithium salt barrels 1 from the high-level conveying roller 24 to the low-level conveying roller 25.

[0020] The lifting and pressing mechanism 3 pre-presses the lithium salt tank 1 to prevent it from tipping over during rotation. It also fixes the lithium salt tank 1 in place, ensuring it remains stationary under the action of the cleaning gas. The lifting and rotating mechanism 6 not only connects the forward purging of the nitrogen delivery mechanism 5 through the pipe 59 to the ball valve 11, allowing nitrogen to enter and exit the lithium salt tank 1, but also rotates the gas connection pipe 14 of the lithium salt tank 1 to a position where it connects with the forward purging inlet pipe 58 of the nitrogen delivery mechanism 5. This rotation of the gas connection pipe 14 of the lithium salt tank 1 to the position where it connects with the forward purging inlet pipe 58 of the nitrogen delivery mechanism 5 ensures subsequent automatic connection.

[0021] The nitrogen gas output from the nitrogen delivery mechanism 5 enters the lithium salt tank 1 and blows out the particulate lithium salt and cleans the lithium salt tank 1.

[0022] like Figure 1As shown, the lithium salt tank 1 has a ring 12 at the bottom, an opening 13 on the ring 12, a conical bottom inside the ring 12, a ball valve 11 at the end of the conical bottom, and a gas connection pipe 14 extending from the conical bottom. The gas connection pipe 14 is connected to the forward purge inlet pipe 58. The gas connection pipe 14 is located in the opening 13 to facilitate automatic or manual connection between the forward purge inlet pipe 58 and the gas connection pipe 14.

[0023] It also includes a pulse dust collector 7. The first input end of the pulse dust collector 7 is connected to the ball valve 11 of the lithium salt tank 1 through the forward purging exit pipe 59. The second input end of the pulse dust collector 7 is connected to the nitrogen source of the nitrogen delivery mechanism 5 through the cleaning pipe 55. The pulse nitrogen generated in the cleaning pipe 55 separates the particulate lithium salt from the adsorbent in the pulse dust collector 7. After separation, the particulate lithium salt falls into the dust collection tank 8 below the pulse dust collector 7 through the first output end. The second output end of the pulse dust collector 7 is the nitrogen recovery pipe 9.

[0024] like Figure 2-4 As shown, the flipping clamping mechanism includes a servo transmission mechanism 21, an upper and lower clamping mechanism 22, and a left and right limiting mechanism 23. The lithium salt tank 1 enters between the left and right clamping arms of the left and right limiting mechanism 23. Any one of the upper and lower clamping arms of the upper and lower clamping mechanism 22 moves relative to each other through the clamping drive cylinder 221 to clamp the top and bottom of the lithium salt tank 1. The rotating shaft of the servo transmission mechanism 21 is fixedly connected to the upper and lower clamping mechanism 22 and / or the left and right limiting mechanism 23, so that the lithium salt tank 1 can rotate 180°.

[0025] The left and right limiting mechanisms 23 can be fixed or relatively movable, thus adapting to lithium salt tanks 1 of different diameters.

[0026] like Figure 5 As shown, the lifting and pressing mechanism 3 includes a fixed bracket 33, which is located above the lithium salt tank 1; the pressing cylinder 31 is fixed on the fixed bracket 33, and the cylinder rod of the pressing cylinder 31 is connected to the pressing plate 32. When pre-pressing, the pressing plate 32 presses the lithium salt tank 1 but does not affect the rotation of the lithium salt tank 1; when fixed pressing, the pressing plate 32 presses down on the lithium salt tank 1 to prevent it from moving.

[0027] A positioning mechanism 4 is provided between two adjacent lithium salt barrels 1 on the high-level conveying drive roller 24. The positioning mechanism 4 is automatically raised by the blocking cylinder, so that the V-shaped positioning block blocks the body of the lithium salt barrel 1 to achieve the effect of centering the barrel opening.

[0028] For a 112L lithium salt tank, the diameter of its opening is 50mm. The flange opening must be precisely positioned to ensure no leakage during the purging operation and to prevent lithium salt from splashing out of the pipe and causing pollution.

[0029] like Figure 6As shown, the lifting and rotating mechanism 6 includes a barrel opening positioning seat 63. A sealing ring 69 is provided around the air outlet 64 in the barrel opening positioning seat 63. The air outlet 64 is connected to the forward purging exit pipe 59. The ball valve 11 of the lithium salt barrel 1 is aligned with the air outlet and sealed by the sealing ring 69 to ensure that no air leakage occurs during the purging process. The bottom of the barrel opening positioning seat 63 is a lifting base plate 62. The lifting cylinder 61 is mounted on the support base 66. The cylinder rod of the lifting cylinder 61 is connected to the lifting base plate 62, which allows the barrel opening positioning seat 63 to move vertically, thereby pressing the ball valve 11.

[0030] like Figure 7 As shown, the barrel opening positioning seat 63 is coaxially connected to the driven gear 68, the driven gear 68 is meshed with the drive gear 67, and the drive gear 67 is connected to the shaft of the rotary motor 65. The rotary motor 65 is mounted on the lifting base plate 62. The rotation of the barrel opening positioning seat 63 drives the lithium salt barrel 1 to rotate. The rotary drum sensor can detect the position of the opening 13 of the lithium salt barrel 1. The control unit can start the rotary motor 65 according to the position of the opening 13 determined by the rotary drum sensor, so that the gas connecting pipe 14 in the opening 13 rotates to a preset position and automatically or manually connects with the forward purging inlet pipe 58.

[0031] like Figure 8 As shown in Example 1: One end of the forward purge inlet pipe 58 is connected to a nitrogen gas source, and the other end of the forward purge inlet pipe 58 is connected to the gas connection pipes 14 of multiple lithium salt tanks 1 through multiple parallel pipes A. The ball valves 11 of the multiple lithium salt tanks 1 are connected to the forward purge outlet pipe 59 through multiple parallel pipes B. One end of the cleaning pipe 55 is connected to the forward purge inlet pipe 58. The forward purge inlet pipe 58 is equipped with a shut-off valve 51 and a pressure reducing valve 52. A dew point meter 54 is connected in parallel to the forward purge outlet pipe 59. A remote pressure gauge 53 is installed on the forward purge inlet pipe 58.

[0032] like Figure 9 As shown in Example 2: One end of the forward purge inlet pipe 58 is connected to a nitrogen gas source, and the other end of the forward purge inlet pipe 58 is connected to the gas connection pipes 14 of multiple lithium salt tanks 1 through multiple parallel pipes A respectively. The ball valves 11 of multiple lithium salt tanks 1 are connected to the forward purge outlet pipe 59 through multiple parallel pipes B respectively. One end of the cleaning pipe 55 is connected to the forward purge inlet pipe 58. The forward purge inlet pipe 58 is equipped with a shut-off valve 51 and a pressure reducing valve 52. A dew point meter 54 is connected in parallel to the forward purge outlet pipe 59.

[0033] The forward purge inlet pipe 58 and the forward purge outlet pipe 59 are connected by the reverse purge inlet pipe 56 and the reverse purge outlet pipe 57. The nitrogen flow direction for forward purge is: forward purge inlet pipe 58 — gas connection pipe 14 of lithium salt tank 1 — lithium salt tank 1 — ball valve 11 of lithium salt tank 1 — forward purge outlet pipe 59 — pulse dust collector 7. The nitrogen flow direction for reverse purge is: forward purge inlet pipe 58 — reverse purge inlet pipe 56 — forward purge outlet pipe 57. The process involves several stages: purge exit pipe 59 – ball valve 11 of lithium salt tank 1 – lithium salt tank 1 – gas connection pipe 14 of lithium salt tank 1 – forward purge entry pipe 58 – reverse purge exit pipe 57 – forward purge exit pipe 59 – pulse dust collector 7. During forward purge, nitrogen gas is introduced through gas connection pipe 14 to purge the vertical inner wall of lithium salt tank 1. Gas connection pipe 14 is connected to an annular guide plate, which forms a gas channel with the conical bottom inner wall, with the outlet facing the vertical inner wall of lithium salt tank 1. During reverse purge, nitrogen gas is introduced through ball valve 11 to purge the horizontal bottom of lithium salt tank 1. Switching between forward and reverse purges further cleans the lithium salt particles in lithium salt tank 1 and prevents lithium salt particles from accumulating in a "dead corner" during unidirectional purge.

[0034] The present invention provides a method for recycling residual materials from electrolyte lithium salt packaging barrels, comprising the following steps: Step 1, Loading the barrel: After placing the lithium salt barrel 1 on the low-position conveyor roller 25 conveyor line, the low-position conveyor roller 25 conveyor line will automatically transport the lithium salt barrel 1 to the barrel unloading station. Step 2, dismantle the drum: At the drum dismantling station, remove the blind flange of the ball valve; Step 3, barrel flipping: At the barrel flipping station, the lithium salt barrel 1 is flipped 180° and transferred to the high-level conveying drive roller 24 by the flipping clamping mechanism, and the ball valve 11 is oriented downwards. Step 4, Nitrogen purging: Step 41: When the lithium salt barrel 1 is delivered to the nitrogen purging station, after the detection switch detects that there is a barrel, the positioning mechanism 4 automatically rises through the blocking cylinder, so that the V-shaped positioning block blocks the body of the lithium salt barrel 1 to achieve the effect of centering the barrel opening. Step 42: The lifting cylinder 61 of the lifting and rotating mechanism 6 lifts the lithium salt tank 1 through the barrel opening positioning seat 63, and the ball valve automatically connects with the pipeline; the lifting and pressing mechanism 3 first pre-presses the lithium salt tank 1. Step 43: The lifting and rotating mechanism 6 rotates the lithium salt tank with the rotating motor 65. The position of the opening 13 of the tank ring is determined by the rotating drum sensor. The gas connection pipe 14 is oriented toward the operating position. The gas connection pipe 14 is automatically or manually connected directly or indirectly to the forward purging inlet pipe 58. Step 44: Afterwards, the lifting and pressing mechanism 3 presses the lithium salt tank 1 firmly and keeps it stationary. After opening the gas connection pipe 14 and the ball valve 11, the nitrogen purging operation begins. The residual lithium salt leaves the pipeline 59 through the forward purging and is transported to the pulse dust collector 7. The dust collection tank 8 below the pulse dust collector 7 collects the lithium salt particles. The exhaust gas is discharged to the nitrogen recovery pipeline 9 after passing through the filter. The control unit can switch between forward-purge nitrogen and reverse-purge nitrogen to avoid cleaning dead zones in the lithium salt tank 1. Step 5, Loading into the barrel: After purging, close the ball valve on the lithium salt barrel; Step 6, Tilting the barrel: The lithium salt barrel 1 is flipped 180° by the tilting and clamping mechanism and transported to the barrel filling station of the low-position conveying drive roller 25 to assemble the blind plate of the ball valve. Step 7, Lowering the bucket: The low-position conveyor drive roller 25 conveyor line transports the lithium salt bucket to the lower bucket position, completing the lowering of the bucket.

[0035] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A device for recycling residual materials from electrolyte lithium salt packaging barrels, characterized in that: The system includes a low-level conveying drive roller (25) and a high-level conveying drive roller (24). A flipping clamping mechanism is provided between the low-level conveying drive roller (25) and the high-level conveying drive roller (24) to transfer one or more lithium salt barrels (1) to be purged from the low-level conveying drive roller (25) to the high-level conveying drive roller (24), and the ball valve (11) of the lithium salt barrel (1) changes from facing upward to facing downward. The top of the lithium salt barrel (1) to be purged located on the high-level conveying drive roller (24) is acted by the lifting and pressing mechanism (3), and the bottom is acted by the lifting and rotating mechanism (6). The lifting and pressing mechanism (3) pre-presses the lithium salt barrel (1) to prevent the rotating lithium salt barrel (1) from tipping over. The lifting and pressing mechanism (3) also fixes the lithium salt barrel (1) so that it is fixed under the action of the cleaning gas and will not move. The lifting and rotating mechanism (6) not only enables the forward purging of the nitrogen conveying mechanism (5) to leave the pipe (59) and the ball valve (11) 1) The connection enables the entry and exit of nitrogen into the lithium salt tank (1), and also allows the gas connection pipe (14) of the lithium salt tank (1) to rotate to the position where it docks with the forward purging inlet pipe (58) of the nitrogen conveying mechanism (5); the nitrogen output from the nitrogen conveying mechanism (5) enters the lithium salt tank (1) and blows out the particulate lithium salt and cleans the lithium salt tank (1); it also includes a pulse dust collector (7), the first input end of the pulse dust collector (7) is connected to the ball valve (11) of the lithium salt tank (1) through the forward purging outlet pipe (59), and the second input end of the pulse dust collector (7) is connected to the nitrogen source of the nitrogen conveying mechanism (5) through the cleaning pipe (55); the pulse nitrogen generated in the cleaning pipe (55) separates the particulate lithium salt from the adsorbent in the pulse dust collector (7), and after separation, the particulate lithium salt falls into the dust collection tank (8) below the pulse dust collector (7) through the first output end, and the second output end of the pulse dust collector (7) is a nitrogen recovery pipe (9); The forward purge inlet pipe (58) and the forward purge outlet pipe (59) are connected by the reverse purge inlet pipe (56) and the reverse purge outlet pipe (57); the nitrogen flow direction for forward purge is: forward purge inlet pipe (58) – gas connection pipe (14) of lithium salt tank (1) – lithium salt tank (1) – ball valve (11) of lithium salt tank (1) – forward purge outlet pipe (59) – pulse dust collector (7); the nitrogen flow direction for reverse purge is: forward purge inlet pipe (58) – reverse purge inlet pipe (56) – reverse purge outlet pipe (57) Inlet pipe (56) – Forward purge exit pipe (59) – Ball valve (11) of lithium salt tank (1) – Lithium salt tank (1) – Gas connection pipe (14) of lithium salt tank (1) – Forward purge inlet pipe (58) – Reverse purge exit pipe (57) – Forward purge exit pipe (59) – Pulse dust collector (7); During forward purge, nitrogen gas is input into the gas connection pipe (14) to purge the vertical inner wall of lithium salt tank (1), and during reverse purge, nitrogen gas is input into the ball valve (11) to purge the horizontal bottom of lithium salt tank (1).

2. The electrolyte lithium salt packaging barrel residue recycling device according to claim 1, characterized in that: The flipping clamping mechanism includes a servo transmission mechanism (21), an upper and lower clamping mechanism (22), and a left and right limiting mechanism (23). The lithium salt barrel (1) enters between the left and right clamping arms of the left and right limiting mechanism (23). Any one of the upper and lower clamping arms of the upper and lower clamping mechanism (22) moves relative to each other through the clamping drive cylinder (221) to clamp the top and bottom of the lithium salt barrel (1). The rotating shaft of the servo transmission mechanism (21) is fixedly connected to the upper and lower clamping mechanism (22) and / or the left and right limiting mechanism (23), so that the lithium salt barrel (1) can rotate 180°.

3. The electrolyte lithium salt packaging barrel residue recycling device according to claim 2, characterized in that: The lifting and pressing mechanism (3) includes a fixed bracket (33) located above the lithium salt tank (1); the pressing cylinder (31) is fixed on the fixed bracket (33), and the cylinder rod of the pressing cylinder (31) is connected to the pressing plate (32). When pre-pressing, the pressing plate (32) presses the lithium salt tank (1) but does not affect the rotation of the lithium salt tank (1); when fixed pressing, the pressing plate (32) presses the lithium salt tank (1) to prevent it from moving.

4. The electrolyte lithium salt packaging barrel residue recycling device according to claim 3, characterized in that: A positioning mechanism (4) is provided between two adjacent lithium salt barrels (1) on the high-level conveying transmission roller (24). The positioning mechanism (4) is automatically raised by the blocking cylinder, so that the V-shaped positioning block blocks the body of the lithium salt barrel (1) to achieve the effect of centering the barrel opening.

5. The electrolyte lithium salt packaging barrel residue recycling device according to claim 4, characterized in that: The lifting and rotating mechanism (6) includes a barrel mouth positioning seat (63), and a sealing ring (69) is provided around the air outlet (64) in the barrel mouth positioning seat (63). The air outlet (64) is connected to the forward purging exit pipe (59). The ball valve (11) of the lithium salt barrel (1) is aligned with the air outlet (64) and sealed by the sealing ring (69). The bottom of the barrel mouth positioning seat (63) is a lifting base plate (62). The lifting cylinder (61) is installed on the support base (66). The cylinder rod of the lifting cylinder (61) is connected to the lifting base plate (62) so that the barrel mouth positioning seat (63) can move vertically and thus press the ball valve (11).

6. The electrolyte lithium salt packaging barrel residue recycling device according to claim 5, characterized in that: The lithium salt tank (1) has a ring (12) at the bottom, an opening (13) on the ring (12), a conical bottom inside the ring (12), a ball valve (11) at the end of the conical bottom, and a gas connection pipe (14) extending from the conical bottom. The gas connection pipe (14) is connected to the forward purge inlet pipe (58). The gas connection pipe (14) is located in the opening (13) to facilitate automatic or manual connection between the forward purge inlet pipe (58) and the gas connection pipe (14). The tank opening positioning seat (63) is coaxially connected to the driven gear (68), and the driven gear (68) is connected to the drive gear. Gears (67) mesh and connect, drive gears (67) are connected to the shaft of rotary motor (65), rotary motor (65) is mounted on lifting base plate (62); barrel opening positioning seat (63) rotates to drive lithium salt barrel (1) to rotate; rotary drum sensor can sense the position of opening (13) of lithium salt barrel (1); control unit can start rotary motor (65) according to the position of opening (13) determined by rotary drum sensor, so that gas connecting pipe (14) in opening (13) rotates to a preset position and automatically or manually connects with forward purging inlet pipe (58).

7. The electrolyte lithium salt packaging barrel residue recycling device according to claim 6, characterized in that: One end of the forward purge inlet pipe (58) is connected to a nitrogen gas source, and the other end of the forward purge inlet pipe (58) is connected to the gas connection pipes (14) of multiple lithium salt tanks (1) through multiple parallel pipes A respectively. The ball valves (11) of multiple lithium salt tanks (1) are connected to the forward purge outlet pipe (59) through multiple parallel pipes B respectively. One end of the cleaning pipe (55) is connected to the forward purge inlet pipe (58). The forward purge inlet pipe (58) is equipped with a shut-off valve (51) and a pressure reducing valve (52). A dew point meter (54) is connected in parallel to the forward purge outlet pipe (59).

8. A recycling method for the electrolyte lithium salt packaging drum residue recycling device according to any one of claims 6 or 7, comprising the following steps: Step 1, Loading the barrel: After placing the lithium salt barrel (1) on the low-position conveyor roller (25) conveyor line, the low-position conveyor roller (25) conveyor line will automatically transport the lithium salt barrel (1) to the barrel unloading station. Step 2, dismantle the drum: At the drum dismantling station, remove the blind flange of the ball valve; Step 3, barrel flipping: At the barrel flipping station, the lithium salt barrel (1) is flipped 180° and transferred to the high-level conveying drive roller (24) by the flipping clamping mechanism, and the ball valve (11) is turned downwards; Step 4, Nitrogen purging: Step 41: When the lithium salt barrel (1) is delivered to the nitrogen purging station, after the detection switch detects that there is a barrel, the positioning mechanism (4) automatically rises through the blocking cylinder, so that the V-shaped positioning block blocks the body of the lithium salt barrel (1) to achieve the effect of aligning the barrel opening. Step 42: The lifting cylinder (61) of the lifting and rotating mechanism (6) lifts the lithium salt tank (1) through the barrel opening positioning seat (63), and the ball valve automatically connects with the pipeline; the lifting and pressing mechanism (3) first pre-presses the lithium salt tank (1); Step 43: The lifting and rotating mechanism (6) rotates the lithium salt tank by the rotating motor (65). The position of the opening (13) of the tank ring is determined by the rotating drum sensor. The gas connection pipe (14) is oriented toward the operating position. The gas connection pipe (14) is automatically or manually connected directly or indirectly to the forward purging inlet pipe (58). Step 44: Afterwards, the lifting and pressing mechanism (3) presses the lithium salt tank (1) tightly and keeps it still. After opening the gas connection pipe (14) and the ball valve (11), the nitrogen purging operation begins. The residual lithium salt leaves the pipeline (59) through the forward purging and is transported to the pulse dust collector (7). The dust collection tank (8) below the pulse dust collector (7) collects the lithium salt particles. The exhaust gas is discharged to the nitrogen recovery pipeline (9) after passing through the filter. Step 5, Loading into the barrel: After purging, close the ball valve on the lithium salt barrel; Step 6, Tilting the barrel: The lithium salt barrel (1) is flipped 180° by the flipping clamping mechanism and transported to the barrel loading station of the low-position conveying drive roller (25) to assemble the blind plate of the ball valve. Step 7, Lowering the bucket: The low-position conveyor drive roller (25) conveyor line transports the lithium salt bucket to the lower bucket position to complete the lowering of the bucket.

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