Cascade cleaning and recycling device and process

Abstract

The invention belongs to the technical field of energy conservation, and discloses an echelon cleaning and recycling device and process, the device comprises a heat recycling bin assembly, the heat recycling bin assembly comprises a bottom cylinder used for conducting high-temperature acid dissolution on metal, and a C-shaped bin used for preheating a metal material is fixedly arranged at the top of the bottom cylinder; in the rotating process of the annular stock bin, follow-up crushing and swallowing, liquid separation and follow-up crushing and discharging of a lithium battery are achieved through the follow-up driving module and the staggered arc toothed rail module, and therefore the recycling efficiency of the lithium battery is improved, and the recycling efficiency of the lithium battery is improved. And in the process, the waste heat of the high-temperature acid dissolution is used for carrying out gradient preheating on the crushed metal and carrying out power generation recycling on the residual heat, and cold air in the low-temperature solidification is used for pre-cooling the crushing bin, so that the coupling recycling of the waste heat and the waste cold is realized.

Description

Technical Field

[0001] This invention belongs to the field of energy-saving technology, specifically relating to a tiered cleaning and recycling device and process. Background Technology

[0002] In the current field of environmental recycling technology, the recycling and processing of retired lithium-ion power batteries from electric vehicles is particularly unique and complex. These batteries contain volatile organic electrolytes and positive and negative electrode materials rich in valuable metals. During the recycling process, to prevent environmental pollution caused by electrolyte volatilization during dismantling, processing is typically carried out at low temperatures, and the electrolyte is safely separated and recovered through condensation or solidification. Simultaneously, the valuable metals in the positive and negative electrodes require high-temperature acid dissolution processes to effectively dissolve them for subsequent separation and purification. The entire process involves both refrigeration and heating, placing high demands on the coordination of energy management. However, existing recycling equipment for this type of battery generally suffers from low coupling of the thermal management system and low overall energy utilization efficiency, especially in the cascade recovery and synergistic utilization of waste heat and cold, which significantly hinders the economic efficiency and environmental friendliness of the recycling process. Therefore, it is necessary to solve these problems. Summary of the Invention

[0003] To address the problems mentioned in the background section, this invention provides a tiered cleaning and recycling device and process, characterized by high coupling.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] In a first aspect, the present invention provides a tiered cleaning and recycling device, including a heat recovery chamber assembly. The heat recovery chamber assembly includes a bottom cylinder for high-temperature acid dissolution of metal. A C-shaped chamber for preheating metal materials is fixedly installed at the top of the bottom cylinder. A discharge chamber assembly for discharging recycled material is rotatably installed inside the C-shaped chamber. The discharge chamber assembly includes an annular hopper with multiple storage troughs. Two crushing rollers for crushing recycled material are rotatably installed in each storage trough. A follow-up drive module for controlling the crushing rollers to crush and discharge material is installed on one side of the annular hopper. A staggered arc toothed rail module that cooperates with the follow-up drive module is installed on one side of the C-shaped hopper. A cold recovery chamber assembly for vacuum cooling and solidification of the recycled liquid is rotatably installed inside the annular hopper.

[0006] In a preferred embodiment of a tiered cleaning and recycling device, the misaligned arc toothed rail module includes an inner arc toothed rail and an outer arc toothed rail, which are fixedly connected by an L-shaped plate, and the inner arc toothed rail and the outer arc toothed rail are not on the same longitudinal plane.

[0007] The follow-up drive module includes a main gear and a second traveling gear. A first traveling gear is coaxially fixed on the second traveling gear. A first driving gear is coaxially fixed on the main gear. A second driving gear is meshed on one side of the first driving gear. The second traveling gear meshes with the main gear.

[0008] In a preferred embodiment of a tiered cleaning and recycling device, a base is fixedly installed at the bottom of the bottom cylinder, and the bottom cylinder is inclinedly installed on the base. A first side arm and a second side arm are fixedly installed on both sides of the base, respectively. A second motor is fixedly installed at the top of the first side arm, and a side arm ring frame is fixedly installed at the top of the second side arm. A first material pipe and a second material pipe are installed on the outer wall of the bottom cylinder, and a first motor is installed at one end of the bottom cylinder. A first discharge spiral screen is installed inside the bottom cylinder. Two closed blocks are installed inside the C-shaped hopper, and the C-shaped hopper is divided into a precooling chamber and a preheating chamber by the two closed blocks. An exhaust pipe is installed on the outside of the preheating chamber. Fixed arms are fixedly installed on both sides of the top of the first side arm. A first slot is opened on the inner wall of the precooling chamber. A third slot and a second slot are opened on the inner and outer walls of the preheating chamber, respectively. Multiple driven material feeding plates are rotatably installed inside the preheating chamber, and a driven gear is installed on the shaft at one end of each driven material feeding plate.

[0009] In a preferred embodiment of a tiered cleaning and recycling device, a first ring arm and a second ring arm are fixedly provided on both sides of the annular hopper, and a ring-moving tooth is fixedly provided on the periphery of the second ring arm through an auxiliary arm;

[0010] The cold recovery chamber assembly includes a cold recovery chamber, a liquid leakage screen is provided on the top wall of the cold recovery chamber, and a second discharge spiral screen is rotatably installed inside the cold recovery chamber. A third material pipe is fixedly installed on the bottom wall of the cold recovery chamber, and a third motor and a vacuum pump are fixedly installed at one end and the top of the cold recovery chamber, respectively. A vent pipe is fixedly installed on the top wall of one side of the cold recovery chamber.

[0011] In a preferred embodiment of a tiered cleaning and recycling device, the first and second ring arms on both sides of the annular silo are rotatably mounted on the first side arm and the side arm ring frame via bearings, respectively, so that the silo body of the annular silo rotates in the middle of the C-shaped silo.

[0012] In a preferred embodiment of a tiered cleaning and recycling device, the fixed arm is fixedly connected to the inner arc toothed rail, the follow-up drive module is set on the side of the annular hopper near the second motor, and a set of follow-up drive modules is set on the outside of each storage trough. The first drive gear and the second drive gear are coaxial with the two crushing rollers in the storage trough, the second traveling gear meshes with the inner arc toothed rail, and the first traveling gear meshes with the outer arc toothed rail.

[0013] In a preferred embodiment of a tiered cleaning and recycling device, the circumferential gear is disposed on one side near the side arm ring frame, and the circumferential gear meshes with the driven gear.

[0014] In a preferred embodiment of a tiered cleaning and recycling device, the cold return bin is fixed to the inner wall of the side arm ring frame, and the cold return bin passes through the interior of the annular silo, while the annular silo rotates outside the cold return bin.

[0015] In a preferred embodiment of a cascaded cleaning and recycling device, the base is equipped with a heating module that heats the bottom cylinder, the end of the cold return chamber is equipped with a cooling module that cools the inside of the cold return chamber, the third material pipe, the second material pipe and the first material pipe are all equipped with solenoid valves, the cold return chamber is connected to the precooling chamber through a vent pipe, and the preheating chamber is connected to an existing organic Rankine cycle power generation module through an exhaust pipe.

[0016] Secondly, the present invention provides a tiered cleaning and recycling process, implemented using the aforementioned tiered cleaning and recycling device, comprising the following steps:

[0017] S1: The lithium battery material to be recycled is placed into the storage tank through the gap of the C-type bin. During the rotation of the annular bin, the two crushing rollers rotate inward synchronously to crush the lithium battery material, i.e. crushing and swallowing. The annular bin continues to rotate, and the two crushing rollers rotate outward synchronously to crush and discharge the lithium battery material, thereby sending the crushed material into the preheating chamber. The residual heat emitted by the bottom cylinder preheats the material in the preheating chamber.

[0018] S2: During the crushing and feeding process, the liquid in the lithium battery material flows into the cold return chamber through the leakage screen. Through the vacuum pump and the refrigeration module inside the cold return chamber, the liquid in the cold return chamber forms ice crystals under vacuum and low temperature. At this time, the cold air in the cold return chamber cools the inside of the pre-cooling chamber through the vent pipe. When the storage tank on the annular hopper rotates to the position of the pre-cooling chamber, the storage tank is pre-cooled through the pre-cooling chamber.

[0019] S3: The metal material in the preheating chamber falls into the bottom cylinder by being pushed by the driven material feeding plate. The metal material undergoes high-temperature acid dissolution in the bottom cylinder. The dissolved impurities are discharged through the first discharge spiral screen and the first material pipe. The solidified liquid in the cold return chamber is discharged through the second discharge spiral screen and the third material pipe.

[0020] S4: The residual heat in the bottom cylinder preheats the metal material in the preheating chamber in a gradient manner from high to low. The remaining residual heat is connected to the existing organic Rankine cycle power generation module outside through the exhaust pipe, and the generated electricity is sent back into the present invention for auxiliary power supply of the first motor, etc. The cold air in the cold return chamber cools the precooling chamber. The precooling chamber precools each storage tank on the annular hopper, so that a non-evaporating cold environment is formed in the storage tank, avoiding the evaporation of liquid when the lithium battery material breaks in the storage tank.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. In this invention, a second motor drives an annular hopper to rotate within a C-shaped hopper. During rotation, on one hand, two crushing rollers in the storage tank crush the lithium battery and swallow it downwards. On the other hand, when the storage tank rotates to the bottom, the two crushing rollers in the storage tank rotate outwards, causing the crushed metal in the storage tank to be discharged into the preheating chamber through the two crushing rollers. The bottom cylinder is heated by the acid solution in the bottom cylinder and the heating module in the base, causing the crushed metal material to undergo high-temperature acid dissolution. The residual heat of the bottom cylinder preheats the metal material in the preheating chamber. The residual heat after preheating is combined with the existing organic Rankine cycle power generation module outside through the exhaust pipe, and the generated electricity is reused to power the motor in this invention.

[0023] 2. In this invention, during the crushing and feeding of lithium batteries, the annular hopper rotates around the cold return hopper. The liquid generated during the crushing and feeding of lithium batteries enters the cold return hopper through a leakage screen. Through a vacuum pump and a refrigeration module inside the cold return hopper, a vacuum low-temperature solidification environment is formed inside the cold return hopper. The solidified liquid is discharged through a second discharge spiral screen and a third material pipe. At the same time, the cold air inside the cold return hopper pre-cools the storage tank on the annular hopper, preventing the lithium batteries from being crushed in a high-temperature environment and ensuring a safe environment for the crushing and recycling of lithium batteries.

[0024] 3. The crushing and feeding of the two crushing rollers in the storage tank of this invention occurs during the rotation of the annular hopper and does not require additional power support. It is achieved by the cooperation of the follow-up drive module and the staggered arc toothed track module of this invention. During the rotation of the annular hopper, the follow-up drive module and the staggered arc toothed track module realize the follow-up crushing and feeding, liquid separation and follow-up crushing and feeding of lithium batteries, thereby facilitating the subsequent vacuum low-temperature solidification of liquid and the subsequent high-temperature acid dissolution of crushed metal. In this process, the residual heat of high-temperature acid dissolution is used for gradient preheating of crushed metal and the reuse of residual heat for power generation. In this process, the cold air in the low-temperature solidification precools the crushing chamber, realizing the coupling reuse of residual heat and residual cold. This invention ensures a high degree of synergy between various processing steps. Attached Figure Description

[0025] Figure 1 This is a perspective view of the present invention;

[0026] Figure 2 This is a perspective view of the invention from another angle;

[0027] Figure 3 This is a perspective view of the heat recovery chamber assembly of the present invention;

[0028] Figure 4 This is a cross-sectional view of the heat recovery chamber assembly of the present invention;

[0029] Figure 5 This is a perspective view of the material dispensing hopper assembly of the present invention;

[0030] Figure 6 This is a cross-sectional view of the cold recovery bin assembly of the present invention;

[0031] Figure 7 This is a perspective view of part of the structure of the present invention;

[0032] Figure 8 This is a perspective view of part of the structure of the present invention.

[0033] Reference numerals: 100, Heat recovery chamber assembly; 101, Bottom cylinder; 102, Base; 103, First side arm; 104, First feed pipe; 105, First motor; 106, Second motor; 107, C-shaped chamber; 108, Inner arc geared track; 109, Fixed arm; 110, Exhaust pipe; 111, Outer arc geared track; 112, Second feed pipe; 113, First discharge spiral screen; 114, First slot; 115, Enclosing block; 116, Second slot; 117, Third slot; 118, Driven gear; 119, Driven feed plate; 120, Preheating chamber; 121, Precooling chamber; 122, Second side arm Arm; 123, Side arm ring frame; 200, Discharge bin assembly; 201, Annular bin; 202, First ring arm; 203, First drive gear; 204, Second drive gear; 205, First traveling gear; 206, Second traveling gear; 207, Storage trough; 208, Crushing roller; 209, Auxiliary arm; 210, Main gear; 211, Second ring arm; 212, Circular gear; 300, Cold recovery bin assembly; 301, Cold recovery bin; 302, Second discharge spiral screen; 303, Third feed pipe; 304, Third motor; 305, Vacuum pump; 306, Vent pipe; 307, Leakage screen. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1

[0036] Please see Figures 1-8As shown, the present invention provides a tiered cleaning and recycling device, including a heat recovery chamber assembly 100. The heat recovery chamber assembly 100 includes a bottom cylinder 101 for high-temperature acid dissolution of metal. A C-shaped chamber 107 for preheating metal materials is fixedly installed on the top of the bottom cylinder 101. A discharge chamber assembly 200 for discharging recycled material is rotatably installed inside the C-shaped chamber 107. The discharge chamber assembly 200 includes an annular hopper 201. Multiple storage troughs 207 are opened on the annular hopper 201. Two crushing rollers 208 for crushing recycled material are rotatably installed in each storage trough 207. A follow-up drive module for controlling the crushing rollers 208 to crush and discharge material is provided on one side of the annular hopper 201. A staggered arc toothed rail module that cooperates with the follow-up drive module is provided on one side of the C-shaped hopper 107. A cold recovery chamber assembly 300 for vacuum cooling and solidification of the recycled liquid is rotatably installed inside the annular hopper 201.

[0037] In a preferred embodiment, please refer to Figure 3 and Figure 4 A base 102 is fixedly installed at the bottom of the bottom cylinder 101, and the bottom cylinder 101 is inclinedly installed on the base 102. A first side arm 103 and a second side arm 122 are fixedly installed on both sides of the base 102, respectively. A second motor 106 is fixedly installed at the top of the first side arm 103, and a side arm ring frame 123 is fixedly installed at the top of the second side arm 122. A first material pipe 104 and a second material pipe 112 are provided on the outer wall of the bottom cylinder 101, and a first motor 105 is provided at one end of the bottom cylinder 101. A first discharge spiral screen 113 is provided inside the bottom cylinder 101. The C-shaped bin 107 is provided with... There are two enclosed blocks 115, and the C-shaped compartment 107 is divided into a precooling chamber 121 and a preheating chamber 120 by the two enclosed blocks 115. An exhaust pipe 110 is provided on the outside of the preheating chamber 120. Fixed arms 109 are fixedly provided on both sides of the top of the first side arm 103. A first slot 114 is opened on the inner wall of the precooling chamber 121. A third slot 117 and a second slot 116 are opened on the inner and outer walls of the preheating chamber 120, respectively. Multiple driven material feeding plates 119 are rotatably arranged inside the preheating chamber 120. A driven gear 118 is provided on the shaft of one end of the driven material feeding plate 119.

[0038] In this embodiment, a heating module is provided inside the base 102 to heat the inside of the bottom cylinder 101, thereby creating a high-temperature acid dissolution environment inside the bottom cylinder 101.

[0039] In a preferred embodiment, please refer to Figure 5 The annular hopper 201 has a first ring arm 202 and a second ring arm 211 fixedly installed on both sides, and the second ring arm 211 has a ring moving tooth 212 fixedly installed on its periphery through an auxiliary arm 209.

[0040] The first ring arm 202 and the second ring arm 211 on both sides of the annular silo 201 are respectively rotatably mounted on the first side arm 103 and the side arm ring frame 123 via bearings. At this time, the silo body of the annular silo 201 rotates in the middle of the C-shaped silo 107.

[0041] In this embodiment, the annular hopper 201 rotates inside the C-shaped hopper 107, and at the same time, the annular hopper 201 rotates around the cold return hopper 301. In this way, it is convenient for the liquid in the annular hopper 201 to enter the cold return hopper 301, and it is also convenient for the metal material in the annular hopper 201 to enter the bottom cylinder 101.

[0042] Please see Figure 7 The ring gear 212 is located on one side near the side arm ring frame 123, and the ring gear 212 meshes with the driven gear 118.

[0043] In this embodiment, when the annular hopper 201 rotates, it drives the annular gear 212 to rotate. At this time, the annular gear 212 drives the driven gear 118 to rotate, thereby realizing the rotation of the driven material feeding plate 119, which facilitates the feeding of the metal crushed material in the preheating chamber 120 into the bottom cylinder 101.

[0044] In a preferred embodiment, please refer to Figure 6 The cold recovery bin assembly 300 includes a cold recovery bin 301. A liquid leakage screen 307 is provided on the top wall of the cold recovery bin 301, and a second discharge spiral screen 302 is rotatably arranged inside the cold recovery bin 301. A third material pipe 303 is fixedly arranged on the bottom wall of the cold recovery bin 301. A third motor 304 and a vacuum pump 305 are fixedly arranged at one end and the top of the cold recovery bin 301, respectively. A vent pipe 306 is fixedly arranged on the top wall of one side of the cold recovery bin 301.

[0045] In this embodiment, a refrigeration module for cooling the interior of the cold return chamber 301 is provided at the end of the cold return chamber 301. In this way, a condensation environment is formed inside the cold return chamber 301. Solenoid valves are provided on the third feed pipe 303, the second feed pipe 112 and the first feed pipe 104. The preheating chamber 120 is connected to the existing organic Rankine cycle power generation module through the exhaust pipe 110.

[0046] Please see Figure 7 and Figure 8 The cold return chamber 301 is fixed on the inner wall of the side arm ring frame 123, and the cold return chamber 301 passes through the inside of the annular hopper 201, while the annular hopper 201 rotates outside the cold return chamber 301.

[0047] In this embodiment, this method facilitates the fixing of the cold recovery bin assembly 300 and also allows the annular bin 201 to rotate outside the cold recovery bin 301.

[0048] Please see Figure 7 and Figure 8The cold return chamber 301 is connected to the pre-cooling chamber 121 through the vent pipe 306.

[0049] In this embodiment, a precooling environment is formed inside the precooling chamber 121. When the annular hopper 201 rotates to the position of the precooling chamber 121, the precooling chamber 121 precools the storage tank 207 on the annular hopper 201 to prevent the lithium battery from breaking in a high-temperature environment and to ensure that the lithium battery crushing and recycling environment is safe.

[0050] In a preferred embodiment, please refer to Figure 7 and Figure 8 The misaligned arc toothed rail module includes an inner arc toothed rail 108 and an outer arc toothed rail 111. The inner arc toothed rail 108 and the outer arc toothed rail 111 are fixedly connected by an L-shaped plate. The inner arc toothed rail 108 and the outer arc toothed rail 111 are not on the same longitudinal plane.

[0051] Secondly, please refer to Figure 7 and Figure 8 The fixed arm 109 is fixedly connected to the inner arc toothed rail 108, thereby fixing the misaligned arc toothed rail module onto the heat recovery chamber assembly 100.

[0052] In a preferred embodiment, please refer to Figure 5 The follow-up drive module includes a main gear 210 and a second travel gear 206. A first travel gear 205 is coaxially fixed on the second travel gear 206. A first drive gear 203 is coaxially fixed on the main gear 210. A second drive gear 204 is meshed on one side of the first drive gear 203. The second travel gear 206 meshes with the main gear 210.

[0053] Secondly, please refer to Figure 5 The follow-up drive module is set on the side of the annular hopper 201 near the second motor 106. Each storage trough 207 has a set of follow-up drive modules on its outer side. The first drive gear 203 and the second drive gear 204 are coaxial with the two crushing rollers 208 in the storage trough 207, respectively.

[0054] In this embodiment, the two crushing rollers 208 rotate coaxially through the meshing of the first drive gear 203 and the second drive gear 204. When they rotate inward in the same direction, they crush and swallow material; when they rotate outward in the same direction, they crush and discharge material.

[0055] Please see Figure 7 and Figure 8 The second traveling gear 206 meshes with the inner arc toothed rail 108, and the first traveling gear 205 meshes with the outer arc toothed rail 111.

[0056] In this embodiment, when the second traveling gear 206 meshes with the inner arc toothed rail 108, it achieves coaxial rotation inward, which means crushing and feeding material. When the first traveling gear 205 meshes with the outer arc toothed rail 111, it achieves coaxial rotation outward, which means crushing and discharging material.

[0057] Example 2

[0058] This invention provides a tiered cleaning and recycling process, implemented using a tiered cleaning and recycling device, comprising the following steps:

[0059] S1: The lithium battery material to be recycled is placed into the storage tank 207 through the notch of the C-shaped bin 107. During the rotation of the annular bin 201, the two crushing rollers 208 rotate inward synchronously to crush the lithium battery material, i.e., crushing and swallowing. When the annular bin 201 continues to rotate, the two crushing rollers 208 rotate outward synchronously to crush and discharge the lithium battery material, thereby sending the crushed material into the preheating chamber 120. The residual heat emitted by the bottom cylinder 101 preheats the material in the preheating chamber 120.

[0060] S2: During the crushing and feeding process, the liquid in the lithium battery material flows into the cold return chamber 301 through the leakage screen 307. Through the vacuum pump 305 and the cooling module inside the cold return chamber 301, the liquid in the cold return chamber 301 forms ice crystals under vacuum and low temperature. At this time, the cold air in the cold return chamber 301 cools the inside of the pre-cooling chamber 121 through the ventilation pipe 306. When the storage tank 207 on the annular hopper 201 rotates to the position of the pre-cooling chamber 121, the storage tank 207 is pre-cooled through the pre-cooling chamber 121.

[0061] S3: The metal material in the preheating chamber 120 falls into the bottom cylinder 101 by the push of the driven push plate 119. The metal material is dissolved by high temperature acid in the bottom cylinder 101. The dissolved impurities are discharged through the first discharge spiral screen 113 and the first material pipe 104. The solidified liquid in the cold return chamber 301 is discharged through the second discharge spiral screen 302 and the third material pipe 303.

[0062] S4: The residual heat in the bottom cylinder 101 preheats the metal material in the preheating chamber 120 in a gradient manner from high to low. The remaining residual heat is connected to the existing organic Rankine cycle power generation module through the exhaust pipe 110, and the generated electricity is sent back into the present invention for auxiliary power supply of the first motor 105, etc. The cold air in the cold return chamber 301 cools the precooling chamber 121. The precooling chamber 121 precools each storage tank 207 on the annular hopper 201, so that a non-evaporating cold environment is formed in the storage tank 207, avoiding the evaporation of liquid when the lithium battery material breaks in the storage tank 207.

[0063] The working principle of this invention is as follows: When recycling lithium batteries, the lithium batteries are placed into the storage trough 207 of the annular hopper 201 through the notch of the C-type hopper 107. At this time, the second motor 106 drives the annular hopper 201 to rotate within the C-type hopper 107. During the rotation, on the one hand, the two crushing rollers 208 in the storage trough 207 crush the lithium batteries and swallow them downwards; on the other hand, when the storage trough 207 rotates to the bottom, the two crushing rollers 208 in the storage trough 207 rotate outwards, causing the crushed metal in the storage trough 207 to pass through the two rollers. The crushing roller 208 discharges into the preheating chamber 120. When the annular hopper 201 rotates, the ring gear 212 drives the driven material feeding plate 119 to rotate through the driven gear 118. The driven material feeding plate 119 pushes the metal material in the preheating chamber 120 to the second slot 116 and falls into the bottom cylinder 101. The bottom cylinder 101 is heated by the acid solution in the bottom cylinder 101 and the heating module in the base 102, so that the crushed metal material is dissolved by high temperature acid. The residue in the bottom cylinder 101 is discharged through the first discharge spiral screen 113 and the first material pipe 104.

[0064] In the above process, the residual heat of the bottom cylinder 101 preheats the metal material in the preheating chamber 120, and the high temperature first contacts the material at the bottom of the preheating chamber 120, while the lower residual heat contacts the material at the top of the preheating chamber 120, thus achieving gradient preheating. The residual heat after preheating is combined with the existing organic Rankine cycle power generation module outside through the exhaust pipe 110, and the generated electricity is reused to power the motor in this invention.

[0065] Meanwhile, during the lithium battery crushing and feeding process, the annular hopper 201 rotates around the cold return hopper 301. The liquid generated during the lithium battery crushing and feeding process enters the cold return hopper 301 through the leakage screen 307. Through the vacuum pump 305 and the refrigeration module inside the cold return hopper 301, a vacuum low-temperature solidification environment is formed inside the cold return hopper 301. The solidified liquid is discharged through the second discharge spiral screen 302 and the third material pipe 303. At the same time, the cold air in the cold return hopper 301 is connected to the pre-cooling chamber 121 through the vent pipe 306, so that a pre-cooling environment is formed inside the pre-cooling chamber 121. When the annular hopper 201 rotates to the position of the pre-cooling chamber 121, the pre-cooling chamber 121 pre-cools the storage tank 207 on the annular hopper 201, avoiding the subsequent crushing of the lithium battery in a high-temperature environment and ensuring that the crushing and recycling environment of the lithium battery is safe.

[0066] During the above process, the cold air in the cold return chamber 301 cools down the temperature in the storage tank 207, realizing the coupling and reuse of cold air and ensuring the safety of the lithium battery crushing and recycling environment.

[0067] Meanwhile, the crushing and feeding of materials by the two crushing rollers 208 in the storage tank 207 of this invention occurs during the rotation of the annular hopper 201, and does not require additional power support. It is achieved by the cooperation of the follow-up drive module and the misaligned arc gear module of this invention. In this way, when the annular hopper 201 rotates, crushing and feeding occurs first. The liquid generated during this process flows into the cold return chamber 301 through the leakage screen 307, which facilitates subsequent vacuum cooling and solidification. When the annular hopper 201 continues to rotate, the two crushing rollers 208 in the storage tank 207 automatically switch from the crushing and feeding state to the crushing and feeding state. The feeding state is to facilitate the feeding of metal material into the bottom cylinder 101. Its specific working principle is that when the annular hopper 201 rotates, the second traveling gear 206 moves within the arc... The inner ring gear 108 rotates and meshes with the inner ring gear 108. At this time, the second traveling gear 206 drives the first driving gear 203 to rotate through the main gear 210. The first driving gear 203 meshes with the second driving gear 204. In this way, the two crushing rollers 208 in the storage tank 207 rotate inward, that is, crushing and swallowing material. When the annular hopper 201 continues to rotate, the first traveling gear 205 rotates outside the outer ring gear 111 and meshes with the outer ring gear 111. At this time, the first traveling gear 205 drives the first driving gear 203 to rotate through the main gear 210. The first driving gear 203 meshes with the second driving gear 204. In this way, the two crushing rollers 208 in the storage tank 207 rotate outward, that is, crushing and expelling material.

[0068] This invention utilizes the rotation of the annular hopper 201 within the C-shaped hopper 107, in conjunction with its rotation outside the cold return hopper 301. Simultaneously, during the rotation of the annular hopper 201, a follow-up drive module and a staggered arc toothed rail module enable the follow-up crushing and feeding of lithium batteries, liquid separation, and follow-up crushing and discharging. This facilitates subsequent vacuum low-temperature solidification of the liquid and high-temperature acid dissolution of the crushed metal. During this process, the residual heat from the high-temperature acid dissolution provides gradient preheating to the crushed metal and allows for the reuse of residual heat for power generation. Simultaneously, the cold air from the low-temperature solidification precools the crushing hopper, achieving the coupled reuse of residual heat and cold. This invention ensures a high degree of synergy between various processing steps.

[0069] It should be noted that the base 102 is equipped with a heating module that heats the inside of the bottom cylinder 101, and the end of the cold return chamber 301 is equipped with a cooling module that cools the inside of the cold return chamber 301. The preheating chamber 120 is connected to the existing organic Rankine cycle power generation module through the exhaust pipe 110. The heating module, cooling module and organic Rankine cycle power generation module mentioned above are existing technologies, so they will not be described in detail.

[0070] Meanwhile, the annular hopper 201 of the present invention rotates between the C-shaped hopper 107 and the cold return hopper 301. To ensure airtightness during rotation, sealing gaskets are provided between the C-shaped hopper 107 and the cold return hopper 301 and the edge of the annular hopper 201. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0071] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tiered cleaning and recycling device, comprising a heat recovery chamber assembly (100), characterized in that: The heat recovery chamber assembly (100) includes a bottom cylinder (101) for high-temperature acid dissolution of metal. A C-shaped chamber (107) for preheating metal material is fixedly installed on the top of the bottom cylinder (101). A discharge chamber assembly (200) for discharging recycled material is rotatably installed inside the C-shaped chamber (107). The discharge chamber assembly (200) includes an annular hopper (201). Multiple storage troughs (207) are opened on the annular hopper (201). Two crushing rollers (208) for crushing recycled material are rotatably installed in each storage trough (207). A follow-up drive module for controlling the crushing rollers (208) to crush and discharge material is provided on one side of the annular hopper (201). A staggered arc toothed rail module that cooperates with the follow-up drive module is provided on one side of the C-shaped hopper (107). A cold recovery chamber assembly (300) for vacuum solidification treatment of recycled liquid is rotatably installed inside the annular hopper (201).

2. The tiered cleaning and recycling device according to claim 1, characterized in that: The misaligned arc toothed rail module includes an inner arc toothed rail (108) and an outer arc toothed rail (111). The inner arc toothed rail (108) and the outer arc toothed rail (111) are fixedly connected by an L-shaped plate. The inner arc toothed rail (108) and the outer arc toothed rail (111) are not on the same longitudinal plane. The follow-up drive module includes a main gear (210) and a second travel gear (206). A first travel gear (205) is coaxially fixed on the second travel gear (206). A first drive gear (203) is coaxially fixed on the main gear (210). A second drive gear (204) is meshed on one side of the first drive gear (203). The second travel gear (206) meshes with the main gear (210).

3. The tiered cleaning and recycling device according to claim 2, characterized in that: The bottom cylinder (101) is fixedly provided with a base (102) at its bottom, and the bottom cylinder (101) is inclinedly provided on the base (102). A first side arm (103) and a second side arm (122) are fixedly provided on both sides of the base (102). A second motor (106) is fixedly provided on the top of the first side arm (103), and a side arm ring frame (123) is fixedly provided on the top of the second side arm (122). A first material pipe (104) and a second material pipe (112) are provided on the outer wall of the bottom cylinder (101), and a first motor (105) is provided at one end of the bottom cylinder (101). A first discharge spiral screen (113) is provided inside the bottom cylinder (101). The C-shaped bin (107) is provided with Two closed blocks (115) are provided, and the C-shaped compartment (107) is divided into a precooling chamber (121) and a preheating chamber (120) by the two closed blocks (115). An exhaust pipe (110) is provided on the outside of the preheating chamber (120). Fixed arms (109) are fixedly provided on both sides of the top of the first side arm (103). A first slot (114) is opened on the inner wall of the precooling chamber (121). A third slot (117) and a second slot (116) are opened on the inner and outer walls of the preheating chamber (120), respectively. Multiple driven material feeding plates (119) are rotatably arranged inside the preheating chamber (120). A driven gear (118) is provided on the shaft of one end of the driven material feeding plate (119).

4. The tiered cleaning and recycling device according to claim 3, characterized in that: The annular hopper (201) is fixedly provided with a first ring arm (202) and a second ring arm (211) on both sides respectively. The second ring arm (211) is fixedly provided with a ring moving tooth (212) through an auxiliary arm (209) on its periphery. The cold recovery chamber assembly (300) includes a cold recovery chamber (301), a liquid leakage screen (307) is provided on the top wall of the cold recovery chamber (301), and a second discharge spiral screen (302) is rotatably arranged inside the cold recovery chamber (301). A third material pipe (303) is fixedly arranged on the bottom wall of the cold recovery chamber (301), and a third motor (304) and a vacuum pump (305) are fixedly arranged at one end and the top of the cold recovery chamber (301), respectively. A vent pipe (306) is fixedly arranged on the top wall of one side of the cold recovery chamber (301).

5. A tiered cleaning and recycling device according to claim 4, characterized in that: The first ring arm (202) and the second ring arm (211) on both sides of the annular silo (201) are respectively rotatably mounted on the first side arm (103) and the side arm ring frame (123) via bearings, and the silo body of the annular silo (201) rotates in the middle of the C-shaped silo (107).

6. The tiered cleaning and recycling device according to claim 4, characterized in that: The fixed arm (109) is fixedly connected to the inner arc toothed rail (108). The follow-up drive module is set on the side of the annular hopper (201) near the second motor (106). Each storage trough (207) is provided with a set of follow-up drive modules on its outer side. The first drive gear (203) and the second drive gear (204) are coaxial with the two crushing rollers (208) in the storage trough (207). The second traveling gear (206) meshes with the inner arc toothed rail (108). The first traveling gear (205) meshes with the outer arc toothed rail (111).

7. The tiered cleaning and recycling device according to claim 4, characterized in that: The circumferential tooth (212) is located on the side near the side arm ring frame (123), and the circumferential tooth (212) meshes with the driven gear (118).

8. A tiered cleaning and recycling device according to claim 4, characterized in that: The cold return bin (301) is fixed on the inner wall of the side arm ring frame (123), and the cold return bin (301) passes through the inside of the annular hopper (201), while the annular hopper (201) rotates outside the cold return bin (301).

9. A tiered cleaning and recycling device according to claim 4, characterized in that: The base (102) is equipped with a heating module that heats the bottom cylinder (101), and the end of the cold return chamber (301) is equipped with a cooling module that cools the inside of the cold return chamber (301). The third material pipe (303), the second material pipe (112) and the first material pipe (104) are all equipped with solenoid valves. The cold return chamber (301) is connected to the precooling chamber (121) through the vent pipe (306), and the preheating chamber (120) is connected to the existing organic Rankine cycle power generation module through the exhaust pipe (110).

10. A tiered cleaning and recycling process, implemented using a tiered cleaning and recycling device as described in any one of claims 4-9, characterized in that: Includes the following steps: S1: The lithium battery material to be recycled is placed into the storage tank (207) through the gap of the C-type bin (107). During the rotation of the annular bin (201), the two crushing rollers (208) rotate inward synchronously to realize the crushing and swallowing of lithium battery material. The annular bin (201) continues to rotate, and the two crushing rollers (208) rotate outward synchronously to realize the crushing and expulsion of lithium battery material. The crushed material is sent into the preheating chamber (120). The residual heat emitted by the bottom cylinder (101) preheats the material in the preheating chamber (120). S2: During the crushing and feeding process, the liquid in the lithium battery material flows into the cold return chamber (301) through the liquid leakage screen (307). Through the vacuum pump (305) and the refrigeration module inside the cold return chamber (301), the liquid in the cold return chamber (301) forms ice crystals under vacuum and low temperature. At this time, the cold air in the cold return chamber (301) refrigerates the inside of the precooling chamber (121) through the vent pipe (306). When the storage tank (207) on the annular hopper (201) rotates to the position of the precooling chamber (121), the storage tank (207) is precooled through the precooling chamber (121). S3: The metal material in the preheating chamber (120) falls into the bottom cylinder (101) by the push of the driven push plate (119). The metal material is dissolved in the bottom cylinder (101) by high temperature acid. The dissolved impurities are discharged through the first discharge spiral screen (113) and the first material pipe (104). The solidified liquid in the cold return chamber (301) is discharged through the second discharge spiral screen (302) and the third material pipe (303). S4: The residual heat in the bottom cylinder (101) preheats the metal material in the preheating chamber (120) in a gradient manner from high to low. The remaining residual heat is combined with the existing organic Rankine cycle power generation module outside through the exhaust pipe (110) to generate electricity that is sent back into the present invention for auxiliary power supply of the first motor (105), etc. The cold air in the cold return chamber (301) cools the precooling chamber (121). The precooling chamber (121) precools each storage tank (207) on the annular silo (201).

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