Electrolyte lithium salt packaging barrel residual material recovery device and method

Abstract

The invention relates to an electrolyte lithium salt packaging barrel residue recovery device and method. An overturning clamping mechanism is arranged between a low-position conveying transmission roller and a high-position conveying transmission roller and can transfer one or more lithium salt barrels to be purged to the high-position conveying transmission roller from the low-position conveying transmission roller; a ball valve of the lithium salt barrel is changed from facing downward to facing upward; the top of the to-be-purged lithium salt barrel positioned on the high-position conveying driving roller is acted by the lifting barrel pressing mechanism, and the bottom is acted by the lifting rotating mechanism; and nitrogen output by the nitrogen conveying mechanism enters the lithium salt barrel and blows out the lithium salt particles to clean the lithium salt barrel. Traditional manual lithium salt recovery is replaced, the lithium salt barrel can be automatically connected in a butt joint mode to recover lithium salt to a designated recovery tank, automatic conveying, automatic overturning, automatic pipeline butt joint and automatic purging of the stainless steel barrel are achieved, the barrel body is thoroughly cleaned, and no harm is caused to the human body. The process flow is free of waste, cost is saved for customers, and profit is increased.

Description

Technical Field

[0001] The invention relates to the field of lithium battery lithium salt barrel residual material recovery, and in particular to a device and method for recovering electrolyte lithium salt packaging barrel residual material. Background Art

[0002] Electrolyte lithium salt is an important component of lithium-ion batteries, and its storage container is usually a specially structured 112L stainless steel barrel. Since the cost of raw materials for electrolyte production is extremely high, in order to recycle the lithium salt in the barrel and ensure quality, the barrel must be purged and recycled.

[0003] The traditional method is to manually connect the lithium salt barrel pipeline. When manually connecting the stainless steel barrel pipeline, the residual lithium salt in the tube can easily splash out of the tube and cause pollution, and may also cause harm to the human body, posing certain safety hazards; and the lithium salt remaining in the barrel may form crystals when it encounters air, which can easily have an adverse effect on the subsequent battery processing and affect the battery yield. Summary of the invention

[0004] The present invention designs a residual material recovery device and method for electrolyte lithium salt packaging barrels, which solves the technical problem that the existing technology manually connects the lithium salt barrel pipeline. When the pipeline of the stainless steel barrel is manually connected, the lithium salt remaining in the pipe is easily splashed out of the pipe to cause pollution and may also cause harm to the human body, posing certain safety hazards; and the lithium salt remaining in the barrel may form crystals when encountering air, which is likely to have an adverse effect on the subsequent processing of the battery and affect the battery yield.

[0005] In order to solve the above-mentioned technical problems, the present invention adopts the following solutions: A residual material recovery device for electrolyte lithium salt packaging barrels, characterized in that: it comprises a low-position conveying drive roller and a high-position conveying drive roller, a flip clamping mechanism is arranged between the low-position conveying drive roller and the high-position conveying drive roller, and one or more lithium salt barrels to be purged are transferred from the low-position conveying drive roller to the high-position conveying drive roller, and the ball valve of the lithium salt barrel changes from facing downward to facing upward; the top of the lithium salt barrel to be purged located on the high-position conveying drive roller is acted on by a lifting and pressing barrel mechanism, and the bottom is acted on by a lifting and rotating mechanism; the lifting and pressing barrel mechanism pre-presses the lithium salt barrel to prevent the rotating lithium salt barrel from turning over, and the lifting and pressing barrel mechanism also fixes and presses the lithium salt barrel so that the lithium salt barrel is fixed and does not move under the action of the cleaning gas; the lifting and rotating mechanism can not only make the forward purge leaving pipeline of the nitrogen conveying mechanism connected with the ball valve to realize the entry and exit of nitrogen into the lithium salt barrel, but also make the gas connecting pipe of the lithium salt barrel rotate to a position for docking with the forward purge entering pipeline of the nitrogen conveying mechanism; the nitrogen output by the nitrogen conveying mechanism enters the lithium salt barrel and blows out the granular lithium salt and cleans the lithium salt barrel.

[0006] Preferably, a pulse dust collector is also included, wherein the first input end of the pulse dust collector is connected to the ball valve of the lithium salt barrel through a forward purge 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 granular lithium salt and the adsorbent in the pulse dust collector, and after separation, the granular lithium salt falls into the dust collection tank below the pulse dust collector through the first output end, and the second output end of the pulse dust collector is a nitrogen recovery pipeline.

[0007] Preferably, the flip clamping mechanism includes a servo transmission mechanism, an upper and lower clamping mechanism and a left and right limit mechanism. The lithium salt barrel enters between the left and right clamping arms of the left and right limit mechanism. Any one of the upper and lower clamping arms of the upper and lower clamping mechanism moves relative to each other through the 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 limit mechanism, so that the lithium salt barrel can rotate 180°.

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

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

[0010] Preferably, the lifting and rotating mechanism includes a barrel mouth positioning seat, a sealing ring is provided around the air outlet in the barrel mouth positioning seat, the air outlet is connected to the forward purge exit pipeline, the ball valve of the lithium salt barrel is aligned with the air outlet and is sealed by the sealing ring; the bottom of the barrel mouth positioning seat is a lifting base plate, the lifting cylinder is installed on the support seat, and the cylinder rod of the lifting cylinder is connected to the lifting base plate so that the barrel mouth positioning seat can move in the vertical direction to compress the ball valve.

[0011] Preferably, a barrel ring is provided at the bottom of the lithium salt barrel, and an opening is provided on the barrel ring. The barrel ring is inside a conical barrel bottom, and the end of the conical barrel bottom is a ball valve. A gas connecting pipe extends from the conical barrel bottom, and the gas connecting pipe is connected to the forward purge inlet pipe; the gas connecting pipe is located in the opening to facilitate the automatic or manual connection between the forward purge inlet pipe and the gas connecting pipe; the barrel mouth positioning seat is coaxially connected to the driven gear, the driven gear is meshingly connected to the driving gear, the driving gear is connected to the rotating shaft of the rotating motor, and the rotating motor is installed on the lifting bottom plate; the barrel mouth positioning seat rotates to drive the lithium salt barrel to rotate; the drum sensor can sense the opening position of the lithium salt barrel; the control unit can start the rotating motor according to the opening position determined by the drum sensor, so that the gas connecting pipe in the opening rotates to a preset position and is automatically or manually connected to the forward purge inlet pipe.

[0012] Preferably, one end of the forward purge inlet pipeline is connected to a nitrogen gas source, the other end of the forward purge inlet pipeline is respectively connected to the gas connecting pipes of multiple lithium salt barrels through multiple parallel pipelines A, and the ball valves of the multiple lithium salt barrels are respectively connected to the forward purge outlet pipeline through multiple parallel pipelines B; one end of the cleaning pipeline is connected to the forward purge inlet pipeline; a shut-off valve and a pressure reducing valve are provided on the forward purge inlet pipeline; a dew point meter is connected in parallel to the forward purge outlet pipeline.

[0013] A method for recycling residual material of electrolyte lithium salt packaging barrels, comprising the following steps: Step 1: Loading the barrel: After placing the lithium salt barrel on the low-level conveying transmission roller conveyor line, the low-level conveying transmission roller conveyor line automatically transports the lithium salt barrel to the barrel removal station; Step 2, dismantling the barrel: at the barrel dismantling station, remove the blind plate of the ball valve; Step 3, barrel flipping: At the barrel flipping station, the lithium salt barrel is flipped and transferred to the high-position conveying drive roller through the flipping clamping mechanism, and the ball valve is facing downward; Step 4: Nitrogen purge: Step 41, when the lithium salt barrel is transported to the nitrogen purge station, after the detection switch detects the presence of the barrel, the positioning mechanism automatically rises through the blocking cylinder, so that the V-shaped positioning block blocks the barrel body of the lithium salt barrel to achieve the effect of centering the barrel mouth; Step 42, the lifting cylinder of the lifting and rotating mechanism lifts the lithium salt barrel through the barrel mouth positioning seat, and the ball valve and the pipeline are automatically connected; the lifting and pressing barrel mechanism first pre-presses the lithium salt barrel; Step 43, the rotary motor of the lifting and rotating mechanism drives the lithium salt barrel to rotate, the opening position of the barrel ring is determined by the drum sensor, the gas connecting pipe is directed toward the operating position, and the gas connecting pipe is automatically or manually connected to the forward purge inlet pipeline directly or indirectly; Step 44, then the lifting and pressing barrel mechanism presses the lithium salt barrel tightly and immobilizes it, and after opening the gas connecting pipe and the ball valve, the nitrogen purge operation begins, and the residual lithium salt leaves the pipeline through forward purge and is transported to the pulse dust collector, and the dust collection tank below the pulse dust collector collects the lithium salt particles, and the exhaust gas is discharged to the nitrogen recovery pipeline after passing through the filter; Step 5, barrel filling: After purging is completed, close the ball valve on the lithium salt barrel and press the release button; Step 6, bottom flip of the barrel: The lithium salt barrel is flipped 180° by the flipping clamping mechanism, and transported to the barrel loading station of the low-position conveying transmission roller to assemble the blind plate of the ball valve; Step 7, barrel unloading: The low-position conveying drive roller conveyor line transports the lithium salt barrel to the barrel unloading position to complete the barrel unloading.

[0014] The electrolyte lithium salt packaging barrel residual material recovery device and method have the following beneficial effects: (1) The present invention replaces the traditional manual recycling of lithium salt, and can automatically connect lithium salt barrels to recycle lithium salt to designated recycling tanks, realize automatic transportation, automatic flipping, automatic connection to pipes, and automatic purging of stainless steel barrels, and thoroughly clean the barrel body without causing harm to the human body. And the process is waste-free, saving costs for customers and increasing profits.

[0015] (2) In the present invention, the transportation posture of the lithium salt barrel for recycling is with the barrel mouth facing upward. When automatic purging is performed, the posture must be changed to the barrel mouth facing downward, and then the pipeline is automatically connected through the lifting mechanism, and 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 produced by the present invention meet environmental protection requirements. The residual lithium salt is recovered to the designated material barrel through a pipeline and a pulse dust collector, and the waste gas is discharged to the designated pipeline after filtering. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 : Schematic diagram of the structure of the electrolyte lithium salt packaging barrel in the present invention; Figure 2 : Schematic diagram of the structure of the flip clamping mechanism in the present invention Figure 1 ; Figure 3 : Schematic diagram of the structure of the flip clamping mechanism in the present invention Figure 2 ; Figure 4 : Schematic diagram of the arrangement of the peripheral components of the high-position conveying drive roller in the present invention; Figure 5 : Schematic diagram of the electrolyte lithium salt packaging barrel in the present invention when it is in a purging state; Figure 6 : A schematic diagram of the three-dimensional structure of the lifting and rotating mechanism of the present invention; Figure 7 : Schematic diagram of the internal drive structure in the figure; Figure 8 : Schematic diagram of the connection of components in the purge system embodiment 1 of the present invention; Fig. 9 : Schematic diagram of component connections in Example 2 of the purge system of the present invention.

[0018] Description of reference numerals: 1—lithium salt barrel; 11—ball valve; 12—barrel ring; 13—opening; 14—gas connecting 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 lowering barrel pressing mechanism; 31—barrel pressing cylinder; 32—pressing plate; 33—fixing 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 purge into the pipeline; 57—Reverse purge out of the pipeline; 58—Forward purge into the pipeline; 59—Forward purge out of the pipeline; 6—lifting and rotating mechanism; 61—lifting cylinder; 62—lifting bottom plate; 63—barrel mouth positioning seat; 64—air outlet; 65—rotating motor; 66—support seat; 67—driving gear; 68—driven gear; 69—sealing ring; 7—Pulse dust collector; 8—Dust collection tank; 9—Nitrogen recovery pipeline. DETAILED DESCRIPTION

[0019] Combine the following Figures 1 to 9 , the present invention is further described: The electrolyte lithium salt packaging barrel residual material recovery device of the present invention comprises a low-position conveying drive roller 25 and a high-position conveying drive roller 24. A flip clamping mechanism is provided between the low-position conveying drive roller 25 and the high-position conveying drive roller 24, which can transfer one or more lithium salt barrels 1 to be purged from the low-position conveying drive roller 25 to the high-position conveying drive 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 purged located at the high-position conveying drive roller 24 is acted on by the lifting and lowering barrel pressing mechanism 3 and the bottom is acted on by the lifting and rotating mechanism 6. Similarly, the flip clamping mechanism can also transfer one or more lithium salt barrels 1 that have been purged from the high-position conveying drive roller 24 to the low-position conveying drive roller 25.

[0020] The lifting and pressing barrel mechanism 3 pre-presses the lithium salt barrel 1 to prevent the rotating lithium salt barrel 1 from tipping over. The lifting and pressing barrel mechanism 3 also fixes and presses the lithium salt barrel 1 so that the lithium salt barrel 1 is fixed and does not move under the action of the cleaning gas; the lifting and rotating mechanism 6 can not only enable the forward purge exit pipeline 59 of the nitrogen conveying mechanism 5 to be connected with the ball valve 11 to realize the entry and exit of nitrogen into the lithium salt barrel 1, but also enable the gas connecting pipe 14 of the lithium salt barrel 1 to rotate to a position for docking with the forward purge entry pipeline 58 of the nitrogen conveying mechanism 5; the lifting and rotating mechanism 6 enables the gas connecting pipe 14 of the lithium salt barrel 1 to rotate to a position for docking with the forward purge entry pipeline 58 of the nitrogen conveying mechanism 5, thereby providing a guarantee for subsequent automatic docking.

[0021] The nitrogen gas output by the nitrogen delivery mechanism 5 enters the lithium salt barrel 1 and blows out the granular lithium salt and cleans the lithium salt barrel 1 .

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

[0023] It also includes a pulse dust collector 7, a first input end of the pulse dust collector 7 is connected to the ball valve 11 of the lithium salt barrel 1 through a forward purge exit pipe 59, and a second input end of the pulse dust collector 7 is connected to the nitrogen source of the nitrogen delivery mechanism 5 through a cleaning pipe 55; the pulse nitrogen generated in the cleaning pipe 55 separates the granular lithium salt and the adsorbent in the pulse dust collector 7, and after separation, the granular 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 pipeline 9.

[0024] like Figure 2-4 As shown, the flip clamping mechanism includes a servo transmission mechanism 21, an upper and lower clamping mechanism 22 and a left and right limit mechanism 23. The lithium salt barrel 1 enters between the left and right clamping arms of the left and right limit mechanism 23. Any one of the upper and lower clamping arms of the upper and lower clamping mechanism 22 moves relatively 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 limit mechanism 23, so that the lithium salt barrel 1 can rotate 180°.

[0025] The left and right limiting mechanisms 23 can be fixed or relatively movable, so as to adapt to lithium salt barrels 1 of different diameters.

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

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

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

[0029] like Figure 6As shown, the lifting and rotating mechanism 6 includes a barrel mouth positioning seat 63, a sealing ring 69 is arranged around the air outlet 64 in the barrel mouth positioning seat 63, the air outlet 64 is connected to the forward purge exit pipe 59, and 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 there is no leakage during the purge process. The bottom of the barrel mouth positioning seat 63 is a lifting bottom plate 62, and the lifting cylinder 61 is installed on the support seat 66. The cylinder rod of the lifting cylinder 61 is connected to the lifting bottom plate 62 so that the barrel mouth positioning seat 63 can move in the vertical direction so as to press the ball valve 11.

[0030] like Figure 7 As shown, the barrel mouth positioning seat 63 is coaxially connected with the driven gear 68, the driven gear 68 is meshingly connected with the driving gear 67, the driving gear 67 is connected with the rotating shaft of the rotating motor 65, and the rotating motor 65 is installed on the lifting base plate 62; the barrel mouth positioning seat 63 rotates to drive the lithium salt barrel 1 to rotate; the drum sensor can sense the position of the opening 13 of the lithium salt barrel 1; the control unit can start the rotating motor 65 according to the position of the opening 13 determined by the drum sensor, so that the gas connecting pipe 14 in the opening 13 rotates to a preset position and is automatically or manually connected to the forward purge inlet pipeline 58.

[0031] like Figure 8 As shown, in Example 1, one end of the forward purge inlet pipeline 58 is connected to a nitrogen gas source, and the other end of the forward purge inlet pipeline 58 is respectively connected to the gas connecting pipes 14 of multiple lithium salt barrels 1 through multiple parallel pipelines A, and the ball valves 11 of multiple lithium salt barrels 1 are respectively connected to the forward purge exit pipeline 59 through multiple parallel pipelines B; one end of the cleaning pipeline 55 is connected to the forward purge inlet pipeline 58; a cut-off valve 51 and a pressure reducing valve 52 are provided on the forward purge inlet pipeline 58; a dew point meter 54 is connected in parallel to the forward purge exit pipeline 59. A remote pressure gauge 53 is provided on the forward purge inlet pipeline 58.

[0032] like Fig. 9 As shown, Example 2: one end of the forward purge inlet pipeline 58 is connected to the nitrogen gas source, and the other end of the forward purge inlet pipeline 58 is respectively connected to the gas connecting pipes 14 of multiple lithium salt barrels 1 through multiple parallel pipelines A, and the ball valves 11 of the multiple lithium salt barrels 1 are respectively connected to the forward purge outlet pipeline 59 through multiple parallel pipelines B; one end of the cleaning pipeline 55 is connected to the forward purge inlet pipeline 58; a shut-off valve 51 and a pressure reducing valve 52 are provided on the forward purge inlet pipeline 58; a dew point meter 54 is connected in parallel to the forward purge outlet pipeline 59.

[0033] The forward purge inlet pipe 58 and the forward purge outlet pipe 59 are connected to the reverse purge inlet pipe 56 and the reverse purge outlet pipe 57; the forward purge nitrogen gas flows as follows: forward purge inlet pipe 58 - gas connecting pipe 14 of lithium salt barrel 1 - lithium salt barrel 1 - ball valve 11 of lithium salt barrel 1 - forward purge outlet pipe 59 - pulse dust collector 7; the reverse purge nitrogen gas flows as follows: forward purge inlet pipe 58 - reverse purge inlet pipe 56 - forward purge outlet pipe 59 Purge out of pipeline 59 - ball valve 11 of lithium salt barrel 1 - lithium salt barrel 1 - gas connecting pipe 14 of lithium salt barrel 1 - forward purge into pipeline 58 - reverse purge out of pipeline 57 - forward purge out of pipeline 59 - pulse dust collector 7; in forward purge, nitrogen is input into gas connecting pipe 14 to purge the vertical inner wall of lithium salt barrel 1, and gas connecting pipe 14 is connected to annular guide plate, and annular guide plate and inner wall of conical barrel bottom form gas channel outlet facing the vertical inner wall of lithium salt barrel 1. In reverse purge, nitrogen is input into ball valve 11 to purge the horizontal bottom of lithium salt barrel 1. Switching between forward and reverse purge can further clean up lithium salt particles in lithium salt barrel 1, and also avoid lithium salt particles from accumulating in a certain "dead corner" during one-way purge.

[0034] The method for recycling residual material in electrolyte lithium salt packaging barrels of the present invention comprises the following steps: Step 1, loading the barrel: After the lithium salt barrel 1 is placed on the low-position conveying transmission roller 25 conveying line, the low-position conveying transmission roller 25 conveying line automatically conveys the lithium salt barrel 1 to the barrel unloading station; Step 2, dismantling the barrel: at the barrel dismantling station, remove the blind plate of the ball valve; Step 3, barrel body flipping: At the barrel body flipping station, the lithium salt barrel 1 is flipped 180 degrees and transferred to the high-position conveying drive roller 24 through the flipping clamping mechanism, and the ball valve 11 is facing downward; Step 4: Nitrogen purge: Step 41, when the lithium salt barrel 1 is transported to the nitrogen purge 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 barrel body of the lithium salt barrel 1 to achieve the effect of centering the barrel mouth; Step 42, the lifting cylinder 61 of the lifting and rotating mechanism 6 lifts the lithium salt barrel 1 through the barrel mouth positioning seat 63, and the ball valve and the pipeline are automatically connected; the lifting and pressing barrel mechanism 3 first pre-presses the lithium salt barrel 1; Step 43, the lifting and rotating mechanism 6 rotates the rotating motor 65 to drive the lithium salt barrel to rotate, and the position of the opening 13 of the barrel ring is determined by the drum sensor, and the gas connecting pipe 14 is directed to the operating position, and the gas connecting pipe 14 is automatically or manually connected to the forward purge inlet pipe 58 directly or indirectly; Step 44, then the lifting and pressing barrel mechanism 3 presses the lithium salt barrel 1 tightly, opens the gas connecting pipe 14 and the ball valve 11, and starts the nitrogen purging operation. The residual lithium salt leaves the pipeline 59 through the forward purge 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, and the exhaust gas is discharged to the nitrogen recovery pipeline 9 after passing through the filter; The control unit can switch between forward purging nitrogen and reverse purging nitrogen to avoid blind spots in the lithium salt tank 1; Step 5, barreling: After purging, close the ball valve on the lithium salt barrel; Step 6, bottom flipping of 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, and the blind plate of the ball valve is assembled; Step 7, barrel lowering: The low-position conveying drive roller 25 conveyor line conveys the lithium salt barrel to the barrel lowering position to complete the barrel lowering.

[0035] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A residual material recovery device for electrolyte lithium salt packaging barrels, characterized in that: The invention comprises a low-position conveying drive roller (25) and a high-position conveying drive roller (24); a flip clamping mechanism is provided between the low-position conveying drive roller (25) and the high-position conveying drive roller (24) so ​​as to transfer one or more lithium salt barrels (1) to be purged from the low-position conveying drive roller (25) to the high-position conveying drive roller (24); and a 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 purged located on the high-position conveying drive roller (24) is acted upon by a lifting and pressing barrel mechanism (3) and the bottom is acted upon by a lifting and rotating mechanism (6); the lifting and pressing barrel mechanism (3) pre-presses the lithium salt barrel (1) to prevent the barrel from rotating. The lithium salt barrel (1) is turned over, and the lifting and pressing barrel mechanism (3) further fixes and presses the lithium salt barrel (1) so that the lithium salt barrel (1) is fixed and does not move under the action of the cleaning gas; the lifting and rotating mechanism (6) can not only connect the forward purge exit pipe (59) of the nitrogen delivery mechanism (5) with the ball valve (11) to realize the inflow and outflow of nitrogen into the lithium salt barrel (1), but also can rotate the gas connecting pipe (14) of the lithium salt barrel (1) to a position for docking with the forward purge entry pipe (58) of the nitrogen delivery mechanism (5); the nitrogen output by the nitrogen delivery mechanism (5) enters the lithium salt barrel (1) and blows out the granular lithium salt and cleans the lithium salt barrel (1).

2. The residual material recovery device for electrolyte lithium salt packaging barrel according to claim 1, characterized in that: It also includes a pulse dust collector (7), wherein a first input end of the pulse dust collector (7) is connected to a ball valve (11) of a lithium salt barrel (1) through a forward purge exit pipe (59), and a second input end of the pulse dust collector (7) is connected to a nitrogen source of a nitrogen delivery mechanism (5) through a cleaning pipe (55); the pulse nitrogen generated in the cleaning pipe (55) separates the granular lithium salt from the adsorbent in the pulse dust collector (7), and after separation, the granular lithium salt falls into a dust collection tank (8) below the pulse dust collector (7) through a first output end, and the second output end of the pulse dust collector (7) is a nitrogen recovery pipe (9).

3. The residual material recovery device for electrolyte lithium salt packaging barrels according to claim 2, characterized in that: The flip clamping mechanism comprises a servo transmission mechanism (21), an upper and lower clamping mechanism (22) and a left and right limit mechanism (23); the lithium salt barrel (1) enters between left and right clamping arms of the left and right limit mechanism (23); any one of the upper and lower clamping arms of the upper and lower clamping mechanism (22) moves relatively via a 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 limit mechanism (23), thereby enabling the lithium salt barrel (1) to rotate 180 degrees.

4. The residual material recovery device for electrolyte lithium salt packaging barrel according to claim 3, characterized in that: The lifting barrel pressing mechanism (3) comprises a fixed bracket (33), the fixed bracket (33) is located above the lithium salt barrel (1); the barrel pressing cylinder (31) is fixed on the fixed bracket (33), the cylinder rod of the barrel pressing cylinder (31) is connected to the pressing plate (32), during pre-pressing, the pressing plate (32) presses the lithium salt barrel (1) but does not affect the rotation of the lithium salt barrel (1); during fixed pressing, the pressing plate (32) presses the lithium salt barrel (1) to prevent it from moving.

5. The residual material recovery device for electrolyte lithium salt packaging barrels according to claim 4, characterized in that: A positioning mechanism (4) is provided between two adjacent lithium salt barrels (1) on the high-position conveying drive roller (24). The positioning mechanism (4) is automatically raised by a blocking cylinder, so that a V-shaped positioning block blocks the barrel body of the lithium salt barrel (1) to achieve the effect of centering the barrel mouth.

6. The residual material recovery device for electrolyte lithium salt packaging barrels according to any one of claims 1 to 5, characterized in that: The lifting and rotating mechanism (6) comprises a barrel mouth positioning seat (63), a sealing ring (69) is arranged around an air outlet (64) in the barrel mouth positioning seat (63), the air outlet (64) is connected to a forward purge 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 bottom plate (62), the lifting cylinder (61) is installed on a support seat (66), and the cylinder rod of the lifting cylinder (61) is connected to the lifting bottom plate (62) so that the barrel mouth positioning seat (63) can move in a vertical direction, thereby pressing the ball valve (11).

7. The residual material recovery device for electrolyte lithium salt packaging barrel according to claim 6, characterized in that: A barrel ring (12) is provided at the bottom of the lithium salt barrel (1), and an opening (13) is provided on the barrel ring (12). A conical barrel bottom is formed inside the barrel ring (12), and a ball valve (11) is provided at the end of the conical barrel bottom. A gas connecting pipe (14) extends from the conical barrel bottom, and the gas connecting pipe (14) is connected to a forward purge inlet pipe (58). The gas connecting pipe (14) is located in the opening (13) to facilitate automatic or manual connection between the forward purge inlet pipe (58) and the gas connecting pipe (14). The barrel mouth positioning seat (63) is coaxially connected to a driven gear (68), and the driven gear (68) is connected to a driving gear (58). The gear (67) is meshed and connected, and the driving gear (67) is connected to the rotating shaft of the rotating motor (65), and the rotating motor (65) is installed on the lifting bottom plate (62); the barrel mouth positioning seat (63) rotates to drive the lithium salt barrel (1) to rotate; the drum sensor can sense the position of the opening (13) of the lithium salt barrel (1); the control unit can start the rotating motor (65) according to the position of the opening (13) determined by the drum sensor, so that the gas connecting pipe (14) in the opening (13) rotates to a preset position and is automatically or manually connected to the forward purge inlet pipeline (58).

8. The residual material recovery device for electrolyte lithium salt packaging barrels according to claim 7, characterized in that: One end of the forward purge inlet pipeline (58) is connected to a nitrogen gas source, and the other end of the forward purge inlet pipeline (58) is respectively connected to the gas connecting pipes (14) of the plurality of lithium salt barrels (1) through a plurality of parallel pipelines A; the ball valves (11) of the plurality of lithium salt barrels (1) are respectively connected to the forward purge outlet pipeline (59) through a plurality of parallel pipelines B; one end of the cleaning pipeline (55) is connected to the forward purge inlet pipeline (58); a shut-off valve (51) and a pressure reducing valve (52) are provided on the forward purge inlet pipeline (58); and a dew point meter (54) is connected in parallel to the forward purge outlet pipeline (59).

9. The residual material recovery device for electrolyte lithium salt packaging barrels according to claim 8, characterized in that: The forward purge inlet pipe (58) and the forward purge outlet pipe (59) are connected to the reverse purge inlet pipe (56) and the reverse purge outlet pipe (57); the nitrogen gas of the forward purge flows as follows: the forward purge inlet pipe (58) - the gas connection pipe (14) of the lithium salt barrel (1) - the lithium salt barrel (1) - the ball valve (11) of the lithium salt barrel (1) - the forward purge outlet pipe (59) - the pulse dust collector (7); the nitrogen gas of the reverse purge flows as follows: the forward purge inlet pipe (58) - the reverse purge inlet pipe (59) Inlet pipe (56) - forward purge outlet pipe (59) - ball valve (11) of lithium salt barrel (1) - lithium salt barrel (1) - gas connecting pipe (14) of lithium salt barrel (1) - forward purge inlet pipe (58) - reverse purge outlet pipe (57) - forward purge outlet pipe (59) - pulse dust collector (7); when forward purge is performed, nitrogen is input into the gas connecting pipe (14) to purge the vertical inner wall of the lithium salt barrel (1), and when reverse purge is performed, nitrogen is input into the ball valve (11) to purge the horizontal bottom of the lithium salt barrel (1).

10. A method for recycling residual material of electrolyte lithium salt packaging barrels according to any one of claims 1 to 8, comprising the following steps: Step 1, loading the barrel: after the lithium salt barrel (1) is placed on the conveying line of the low-position conveying transmission roller (25), the conveying line of the low-position conveying transmission roller (25) automatically conveys the lithium salt barrel (1) to the barrel unloading station; Step 2, dismantling the barrel: at the barrel dismantling station, remove the blind plate of the ball valve; Step 3, barrel body flipping: at the barrel body flipping station, the lithium salt barrel (1) is flipped 180 degrees and transferred to the high-position conveying drive roller (24) by means of a flipping clamping mechanism, and the ball valve (11) is directed downward; Step 4: Nitrogen purge: Step 41, when the lithium salt barrel (1) is transported to the nitrogen purge station, after the detection switch detects the presence of the barrel, the positioning mechanism (4) automatically rises through the blocking cylinder, so that the V-shaped positioning block blocks the barrel body of the lithium salt barrel (1) to achieve the effect of centering the barrel mouth; Step 42, the lifting cylinder (61) of the lifting and rotating mechanism (6) lifts the lithium salt barrel (1) through the barrel mouth positioning seat (63), and the ball valve and the pipeline are automatically connected; the lifting and pressing barrel mechanism (3) first pre-presses the lithium salt barrel (1); Step 43, the rotary motor (65) of the lifting and rotating mechanism (6) drives the lithium salt barrel to rotate, and the position of the opening (13) of the barrel ring is determined by the drum sensor, and the gas connecting pipe (14) is directed toward the operating position, and the gas connecting pipe (14) is automatically or manually connected to the forward purge inlet pipe (58) directly or indirectly; Step 44, the lifting and lowering barrel mechanism (3) then presses the lithium salt barrel (1) firmly, opens the gas connection pipe (14) and the ball valve (11), and starts the nitrogen purge operation. The residual lithium salt leaves the pipeline (59) through the forward purge 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, and the exhaust gas is discharged to the nitrogen recovery pipeline (9) after passing through the filter. Step 5, barreling: After purging, close the ball valve on the lithium salt barrel; Step 6, bottom flipping of 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), and the blind plate of the ball valve is assembled; Step 7, barrel unloading: The low-position conveying drive roller (25) conveying line transports the lithium salt barrel to the barrel unloading position, completing the barrel unloading.

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