Energy-saving high-temperature heat treatment device for waste lithium batteries

Abstract

This invention relates to the field of waste battery recycling and heat treatment technology, and discloses an energy-saving high-temperature heat treatment device for waste lithium batteries. The heating cylinder has rotating sealing assemblies connected to both ends. Each rotating sealing assembly includes an outer fixed seal connecting the two ends of the heating cylinder and an inner dynamic seal connecting the inner side of the outer fixed seal. A gas circulation treatment assembly is connected between the two sets of outer fixed seals, and a stirring and discharging assembly is fixed in the middle between the two sets of inner dynamic seals. This invention's rotating sealing assembly uses a structure where the outer fixed seal and the inner dynamic seal cooperate, achieving dynamic sealing during the rotation of the heating cylinder. This ensures normal rotation of the heating cylinder while preventing leakage of high-temperature gas and materials, reducing heat waste and improving energy efficiency. As the heating cylinder rotates, the stirring and discharging spiral blades and the material-dispersing plate of the stirring and discharging assembly stir and disperse the materials, preventing accumulation, ensuring uniform heating, and improving the treatment effect.

Description

Technical Field

[0001] This invention relates to the field of waste battery recycling and heat treatment technology, specifically to an energy-saving high-temperature heat treatment device for waste lithium batteries. Background Technology

[0002] The core reason for using high-temperature thermal treatment of waste lithium batteries is to efficiently remove organic matter and significantly improve the subsequent metal recovery rate. With the development of the new energy industry, the output of waste lithium batteries has surged. High-temperature thermal treatment is the core process for their resource recycling, but existing equipment has many shortcomings. Traditional equipment has poor sealing performance of the heating cylinder, making it easy for high-temperature gases to leak, resulting in heat waste, increased energy consumption, and safety hazards. At the same time, material accumulation after feeding leads to uneven heating, affecting the treatment effect. Furthermore, if the exhaust gas generated during thermal treatment is directly emitted, it not only pollutes the environment but also wastes residual heat, failing to meet the requirements of energy-saving, efficient, and environmentally friendly treatment. Therefore, we have introduced an energy-saving high-temperature thermal treatment device for waste lithium batteries. Summary of the Invention

[0003] The purpose of this invention is to provide an energy-saving high-temperature heat treatment device for waste lithium batteries to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an energy-saving high-temperature heat treatment device for waste lithium batteries, comprising a feeding component, a heating cylinder and a receiving trough arranged in sequence, wherein the heating cylinder is driven to rotate by a driving component and is supported to rotate by a support component arranged symmetrically at the front and rear. The heating cylinder is connected to two ends with a rotary sealing assembly, which includes an outer fixed seal and an inner dynamic seal. The discharge pipe of the feeding assembly extends into the heating cylinder after passing through the corresponding outer fixed seal. A burner is fixed on the outer fixed seal at the other end of the heating cylinder. A gas circulation processing component is connected between the two sets of outer fixed seals, and a stirring and discharging component driven by the first motor is fixed in the middle between the two sets of inner dynamic seals.

[0005] Preferably, the heating cylinder includes an outer cylinder, an insulation layer laid on the inner wall of the outer cylinder, an inner cylinder disposed inside the insulation layer, a sealing and positioning component fixed between the two ends of the outer cylinder and the inner cylinder, and connecting ends fixed on the outer sides of both ends of the outer cylinder. The sealing and positioning component includes a plug ring inserted between the two ends of the outer cylinder and the inner cylinder, and a sealing ring fixed to the outer end of the plug ring. The sealing ring is sealed and fixed to both ends of the outer cylinder and the inner cylinder. The connecting end includes a connecting ring and an internally threaded cylinder fixed to the inner end of the connecting ring. The internally threaded cylinder is screwed and fixed to the outer ends of the outer cylinder.

[0006] The outer cylinder and the inner cylinder are respectively provided with an external discharge channel and an internal discharge channel on the same side surface. The external discharge channel and the internal discharge channel are matched to form the discharge port of the heating cylinder. An arc-shaped sealing plate is hinged to the outer surface of the discharge channel, which is used to seal the discharge port of the heating cylinder.

[0007] Preferably, a set of driven toothed rings is fixed on the outer side of the outer cylinder; The drive assembly includes a first base, an annular protective shell fixed on the first base, a second motor fixed on the bottom side of the annular protective shell, and a drive gear whose output end extends into the annular protective shell and is fixed thereafter. The drive gear meshes with the driven gear ring, and the annular protective shell covers the outside of the driven gear ring.

[0008] Preferably, two sets of annular bearing seats symmetrically arranged front and rear are fixed on the outer side of the outer cylinder; The support assembly includes a second base, two sets of support frames symmetrically fixed at the upper end of the second base, and I-shaped support wheels provided on the support frames; The I-shaped support wheel is supported at the bottom of the corresponding annular bearing seat.

[0009] The outer sealing element includes an annular inner sealing seat and an annular outer sealing assembly; The annular outer sealing assembly is fixed to the outer end of the annular inner sealing seat with screws. The annular outer sealing assembly includes an annular outer sealing seat and an annular protrusion disposed on the inner side of the annular outer sealing seat, wherein the annular protrusion is centrally inserted into the connecting ring.

[0010] Preferably, the inner dynamic seal includes a central rotating cylinder with both ends inserted into the corresponding annular inner sealing seat and annular outer sealing seat, and a sealing protrusion ring disposed on the outer side of the central rotating cylinder, wherein the sealing protrusion ring is inserted into the corresponding annular protrusion.

[0011] The annular inner sealing seat has a first upper slot at the top and two sets of symmetrical first side slots on the side of the annular inner sealing seat. The upper part of the annular outer sealing assembly is provided with a second upper slot that passes through the annular outer sealing seat and the annular protrusion, and the side of the annular outer sealing assembly is symmetrically provided with two sets of second side slots that pass through the annular outer sealing seat and the annular protrusion. The first and second upper slots are matched for insertion into the end of the discharge pipe; The first side slot and the second side slot match, and are used for through insertion at the end of the air outlet pipe.

[0012] Preferably, the mixing and discharging assembly includes a first rotating shaft that is fixedly extended through two sets of central rotating cylinders, and mixing and discharging spiral blades and several sets of material-pushing plates fixed on the first rotating shaft, wherein the material-pushing plates are located at the bottom of the end of the discharge pipe.

[0013] Preferably, the gas circulation processing assembly includes a processing box, an inlet pipe and an outlet pipe fixed on the upper sides of both sides of the processing box, and a filter assembly installed inside the processing box; The intake pipe is equipped with a first solenoid valve, and the outlet pipe is equipped with a second solenoid valve; The filter assembly includes an I-shaped frame disposed inside the processing box, slide rails fixed at equal intervals inside the I-shaped frame, a filter plate slidably connected between two sets of horizontal slide rails, and a sealing plate fixed at the end of the filter plate. Activated carbon is filled between adjacent filter plates. The bottom center of the I-shaped frame is provided with an air guide channel; The processing box has a sealing cover at the outer opening.

[0014] Preferably, the feeding assembly includes a feeding hopper fixed to the upper end of the third base by support legs and a crushing and discharging assembly disposed inside the feeding hopper; The discharge pipe is fixed to the bottom side of the feeding hopper, and a third motor is fixed to the bottom of the feeding hopper; The crushing and discharging assembly includes a second rotating shaft whose output end of the third motor extends into the feeding hopper, crushing spiral blades fixed on the upper part of the second rotating shaft, and several sets of discharging plates fixed on the bottom of the second rotating shaft.

[0015] Preferably, the end of the discharge pipe is fitted with a positioning frame after passing through the corresponding outer sealing element. The top of the positioning frame is provided with two sets of L-shaped brackets, and the valve plate is movably connected between the two sets of L-shaped brackets by a pin.

[0016] Compared with the prior art, the beneficial effects of the present invention are: The double-layer structure of the heating cylinder of this invention can solve the problems of poor sealing and heat waste, ensure sealing performance, prevent high-temperature gas leakage, and reduce heat waste and safety hazards.

[0017] The rotating sealing assembly of this invention employs a structure where an outer fixed seal and an inner dynamic seal cooperate, achieving dynamic sealing while the heating cylinder is rotating. This ensures the normal rotation of the heating cylinder while preventing leakage of high-temperature gas and materials, reducing heat waste and improving energy efficiency. As the heating cylinder rotates, the stirring and discharging spiral blades and the material-distributing plate of the stirring and discharging assembly stir and disperse the materials, preventing accumulation, ensuring uniform heating, and improving processing efficiency.

[0018] This invention can solve the problems of exhaust gas pollution and waste heat. The gas circulation treatment component filters the exhaust gas to avoid pollution, while recovering waste heat for recycling, further saving energy. Attached Figure Description

[0019] Figure 1 This is a first three-dimensional structural diagram of the entire invention; Figure 2 This is an exploded structural diagram of the heating cylinder of the present invention; Figure 3 This is a three-dimensional structural diagram of the assembly of the outer cylinder, inner cylinder, and sealing positioning component of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the cross-sectional structure; Figure 5 This is a three-dimensional structural diagram of the heating cylinder of the present invention; Figure 6 This is a schematic diagram of the structure of the driving component of the present invention; Figure 7 This is a three-dimensional structural diagram of the assembly of the driving component, support component, and heating cylinder of the present invention; Figure 8 This is an exploded structural diagram of the assembly of the rotary sealing component and the heating cylinder of the present invention; Figure 9 This is an exploded structural diagram of the rotating sealing assembly and connecting end assembly of the present invention; Figure 10 For the present invention Figure 9 A structural diagram from another perspective; Figure 11 This is a three-dimensional structural diagram of the assembly of the rotary sealing component, driving component, support component and heating cylinder of the present invention; Figure 12 For the present invention Figure 11 A schematic diagram of the cross-sectional structure; Figure 13 This is a cross-sectional view of the feeding component of the present invention; Figure 14 This is a schematic diagram of the assembly of the discharge pipe, positioning frame, and valve plate of the present invention; Figure 15 This is a schematic diagram showing the connection between the feeding assembly, gas circulation processing assembly, rotary sealing assembly, and stirring and discharging assembly of the present invention. Figure 16 For the present invention Figure 15 A schematic diagram of the three-dimensional structure from another perspective; Figure 17 This is an exploded structural diagram of the gas circulation processing component of the present invention; Figure 18 This is a cross-sectional structural diagram of the assembly of the processing box and filter assembly of the present invention; Figure 19 For the present invention Figure 1 A schematic diagram of the three-dimensional structure from another perspective; Figure 20 For the present invention Figure 1 A cross-sectional structural diagram.

[0020] In the picture: 1. Heating cylinder; 101. Outer cylinder; 102. Insulation layer; 103. Outer discharge channel; 104. Arc-shaped sealing plate; 105. Driven gear ring; 106. Annular bearing seat; 107. Inner cylinder; 108. Inner discharge channel; 109. Sealing ring; 110. Insertion ring; 111. Connecting ring; 112. Internally threaded cylinder; 2. Feeding assembly; 201. Feeding hopper; 202. Discharge pipe; 203. Support leg; 204. Third base; 205. Third motor; 206. Discharge plate; 207. Crushing spiral blades; 208. Second rotating shaft; 209. Positioning frame; 210. L-shaped frame; 211. Pin shaft; 212. Valve plate; 3. Gas circulation and processing components; 301. Processing box; 302. Inlet pipe; 303. Outlet pipe; 304. First solenoid valve; 305. Second solenoid valve; 306. I-beam frame; 307. Slide rail; 308. Air guide channel; 309. Filter plate; 310. Sealing plate; 311. Sealing cover; 4. Drive assembly; 401. First base; 402. Second motor; 403. Drive gear; 404. Annular protective shell; 5. Rotary sealing assembly; 501. Annular inner sealing seat; 5011. First upper slot; 5012. First side slot; 502. Inner dynamic seal; 5021. Sealing protrusion ring; 5022. Central rotating cylinder; 503. Annular outer sealing assembly; 5031. Annular outer sealing seat; 5032. Annular protrusion; 5033. Second upper slot; 5034. Second side slot; 5035. Screw; 6. Burner; 7. First motor; 8. Support components; 801. Second base; 802. Support frame; 803. I-shaped support wheels; 9. First rotating shaft; 10. Mixing and discharging spiral blades; 11. Material feeding plate; 12. Material receiving trough. Detailed Implementation

[0021] 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.

[0022] Example: Please see Figures 1-20The present invention provides a technical solution: A waste lithium battery energy-saving high-temperature heat treatment device includes a feeding component 2, a heating cylinder 1 and a receiving tank 12 arranged in sequence. The heating cylinder 1 includes an outer cylinder 101, an insulation layer 102 laid on the inner wall of the outer cylinder 101, an inner cylinder 107 disposed inside the insulation layer 102, a sealing and positioning component fixed between the two ends of the outer cylinder 101 and the inner cylinder 107, and connecting ends fixed on the outer sides of both ends of the outer cylinder 101. The sealing positioning component includes a plug ring 110 inserted between the two ends of the outer cylinder 101 and the inner cylinder 107, and a sealing ring 109 fixed to the outer end of the plug ring 110. The sealing ring 109 is sealed and fixed to the two ends of the outer cylinder 101 and the inner cylinder 107. The connecting end includes a connecting ring 111 and an internally threaded cylinder 112 fixed to the inner end of the connecting ring 111. The internally threaded cylinder 112 is screwed and fixed to the outer sides of both ends of the outer cylinder 101.

[0023] The insulation layer 102 can effectively block the high temperature inside the inner cylinder 107, reduce heat loss to the outside, reduce the heating load of the burner 6, and achieve energy saving. The sealing ring 109 and the plug ring 110 can ensure the sealing of the heating cylinder 1, prevent high-temperature gas leakage, avoid heat waste and safety hazards, and fix the relative position of the outer cylinder 101 and the inner cylinder 107 to resist thermal expansion and contraction during the heating process and extend the service life of the heating cylinder 1.

[0024] The connecting ends (connecting ring 111, internal threaded cylinder 112) are screwed to the outer sides of both ends of the outer cylinder 101 using the internal threaded cylinder 112. The threaded connection method makes disassembly and installation convenient, facilitating the cleaning and maintenance of the heating cylinder 1, as well as the replacement of the inner cylinder 107 and the insulation layer 102, thus reducing equipment maintenance costs. At the same time, the threaded connection has good sealing performance, which can further ensure the sealing effect at both ends of the heating cylinder 1 and prevent high-temperature gas leakage.

[0025] The outer cylinder 101 and the inner cylinder 107 are respectively provided with an outward discharge channel 103 and an inner discharge channel 108 on the same side surface. The outward discharge channel 103 and the inner discharge channel 108 are matched to form the discharge port of the heating cylinder 1. An arc-shaped sealing plate 104 is hinged to the outer surface of the discharge channel 103. The arc-shaped sealing plate 104 is used to seal the discharge port of the heating cylinder 1. The hinged design of the arc-shaped sealing plate 104 makes it easy to open and close. During heat treatment, it can tightly seal the discharge port to prevent heat and gas leakage. It can be quickly opened during discharge to improve discharge efficiency. At the same time, the arc-shaped structure fits the outer surface of the heating cylinder 1, reducing structural protrusion and avoiding interference during rotation.

[0026] The heating cylinder 1 is driven to rotate via the drive assembly 4; A set of driven toothed rings 105 are fixed on the outer side of the outer cylinder 101; The drive assembly 4 includes a first base 401, an annular protective shell 404 fixed on the first base 401, a second motor 402 fixed on the bottom side of the annular protective shell 404, and a drive gear 403 fixed after the output end of the second motor 402 extends into the annular protective shell 404. The drive gear 403 meshes with the driven gear ring 105, and the annular protective shell 404 covers the outside of the driven gear ring 105.

[0027] The heating cylinder 1 is rotated and supported by support components 8 arranged symmetrically at the front and rear. Two sets of annular bearing seats 106, symmetrically arranged front and rear, are fixed on the outer side of the outer cylinder 101; The support assembly 8 includes a second base 801, two sets of support frames 802 symmetrically fixed at the upper end of the second base 801, and I-shaped support wheels 803 provided on the support frames 802; The I-shaped support wheel 803 is supported at the bottom of the corresponding annular bearing seat 106.

[0028] The heating cylinder 1 is connected to two ends of a rotating sealing assembly 5. The rotating sealing assembly 5 includes an outer fixed seal that is rotatingly sealed to both ends of the heating cylinder 1 and an inner dynamic seal 502 that is rotatingly sealed to the inner side of the outer fixed seal. The outer sealing element includes an annular inner sealing seat 501 and an annular outer sealing assembly 503; The annular outer sealing assembly 503 is fixed to the outer end of the annular inner sealing seat 501 by screws 5035; The annular outer sealing assembly 503 includes an annular outer sealing seat 5031 and an annular protrusion 5032 disposed on the inner side of the annular outer sealing seat 5031. The annular protrusion 5032 is inserted centrally into the connecting ring 111.

[0029] The inner dynamic seal 502 includes a central rotating cylinder 5022 whose two ends are respectively inserted into the corresponding annular inner sealing seat 501 and annular outer sealing seat 5031, and a sealing protrusion ring 5021 provided on the outer side of the central rotating cylinder 5022, wherein the sealing protrusion ring 5021 is inserted into the corresponding annular protrusion 5032.

[0030] The annular inner sealing seat 501 has a first upper slot 5011 on its upper part, and two sets of symmetrical first side slots 5012 on its side. The annular outer sealing assembly 503 has a second upper slot 5033 that passes through the annular outer sealing seat 5031 and the annular protrusion 5032 on its upper part, and two sets of second side slots 5034 that pass through the annular outer sealing seat 5031 and the annular protrusion 5032 are symmetrically provided on the side of the annular outer sealing assembly 503. The first upper slot 5011 and the second upper slot 5033 are matched and used to insert into the end of the discharge pipe 202; The first side slot 5012 and the second side slot 5034 are matched for through insertion into the ends of the air outlet pipe 303 and the air inlet pipe 302.

[0031] The rotating sealing assembly 5 adopts a structure in which the outer fixed sealing element (annular inner sealing seat 501 and annular outer sealing assembly 503) and the inner dynamic sealing element 502 cooperate, realizing dynamic sealing in the rotating state of the heating cylinder 1. This ensures the normal rotation of the heating cylinder 1, prevents leakage of internal high-temperature gas and materials, and avoids the entry of external cold air into the heating cylinder 1, thereby reducing heat waste and improving energy saving.

[0032] The discharge pipe 202 of the feeding component 2 passes through the corresponding outer sealing element and extends into the heating cylinder 1. A burner 6 is fixed on the outer sealing element at the other end of the heating cylinder 1. The feeding assembly 2 includes a feeding hopper 201 fixed at the upper end of the third base 204 by a support leg 203, and a crushing and discharging assembly installed inside the feeding hopper 201; The discharge pipe 202 is fixed to the bottom side of the feeding hopper 201, and the third motor 205 is fixed to the bottom of the feeding hopper 201; The crushing and discharging assembly includes a second rotating shaft 208 whose output end of the third motor 205 extends into the feeding hopper 201, a crushing spiral blade 207 fixed on the upper part of the second rotating shaft 208, and several sets of discharge plates 206 fixed on the bottom of the second rotating shaft 208.

[0033] After the discharge pipe 202 passes through the corresponding outer sealing element, a positioning frame 209 is sleeved and fixed. The top of the positioning frame 209 is provided with two sets of L-shaped brackets 210, and the valve plate 212 is movably connected between the two sets of L-shaped brackets 210 by a pin 211.

[0034] A gas circulation treatment component 3 is connected between the front and rear sets of outer sealing elements; The gas circulation processing assembly 3 includes a processing box 301, an inlet pipe 302 and an outlet pipe 303 fixed on the upper sides of both sides of the processing box 301, and a filter assembly installed inside the processing box 301. The intake pipe 302 is equipped with a first solenoid valve 304, and the exhaust pipe 303 is equipped with a second solenoid valve 305. The solenoid valve allows for flexible control of gas flow, facilitating equipment maintenance and adjustment of the waste gas treatment process. It also prevents backflow of high-temperature gas inside the heating cylinder 1, ensuring equipment safety.

[0035] The filter assembly includes an I-shaped frame 306 disposed inside the processing box 301, slide rails 307 fixed at equal intervals inside the I-shaped frame 306, a filter plate 309 sliding between two sets of horizontal slide rails 307, and a sealing plate 310 fixed at the end of the filter plate 309. The filter plate 309 is slidably connected to the I-beam frame 306 via the slide rail 307, which can be quickly pulled out and inserted, making it convenient to replace the filter plate 309 and replenish the activated carbon, thus reducing maintenance costs. The sealing plate 310 ensures the sealing between the filter plate 309 and the I-beam frame 306, preventing unfiltered exhaust gas from being discharged directly and improving the exhaust gas treatment effect. The air guide channel 308 in the middle of the I-shaped frame 306 can make the exhaust gas evenly distributed between each layer of filter plates 309, fully contact the activated carbon, and improve the filtration efficiency. Activated carbon is filled between adjacent filter plates 309. An air guide channel 308 is provided at the bottom center of the I-beam frame 306; A sealing cover 311 is provided at the outer opening of the processing box 301.

[0036] Between the two sets of inner dynamic seals 502, there is also a mixing and discharging assembly driven by the first motor 7.

[0037] The mixing and discharging assembly includes a first rotating shaft 9 fixedly extending through two sets of central rotating cylinders 5022, a mixing and discharging spiral blade 10 fixed on the first rotating shaft 9, and several sets of material-pushing plates 11, with the material-pushing plates 11 located at the bottom of the end of the discharge pipe 202.

[0038] The mixing and discharging spiral blade 10 can realize the dual functions of mixing and discharging materials. During heat treatment, it rotates in the forward direction to mix the materials and ensure uniform heating. During discharge, it rotates in the reverse direction to push the materials and improve discharge efficiency. It has two uses in one, simplifies the structure of the device, and reduces the manufacturing cost of the equipment. The material-discharging plate 11 can promptly disperse the material discharged from the discharge pipe 202, preventing the material from accumulating near the discharge port of the discharge pipe 202 and preventing local overheating. At the same time, it assists the material in moving within the heating cylinder 1, improving the uniformity of heat treatment.

[0039] Specifically, when using it: 1. Feeding and Crushing Pretreatment: After the waste lithium battery is put into the feeding hopper 201 of the feeding component 2, the third motor 205 is started. The third motor 205 drives the second rotating shaft 208 to rotate. The crushing spiral blades 207 on the upper part of the second rotating shaft 208 crush the waste lithium battery, further crushing the large battery fragments into fine particles, so that the subsequent high-temperature heat treatment is uniform and the reaction is sufficient. The crushed material falls to the bottom of the feeding hopper 201. Several sets of discharge plates 206 at the bottom of the second rotating shaft 208 rotate with the shaft, pushing the crushed material to the discharge pipe 202 to achieve quantitative and stable feeding.

[0040] The valve plate 212 at the end of the discharge pipe 202 can be rotated by the pin 211. The crushed material pushes the valve plate 212 to rotate and open, and the crushed material falls into the heating cylinder 1 through the end of the discharge pipe 202. After feeding is completed, the valve plate 212 seals the end of the discharge pipe 202 under its own gravity to prevent the heat inside the heating cylinder 1 from escaping through the discharge pipe 202 and reduce the heat loss inside the heating cylinder 1. The positioning frame 209 ensures the stability of the connection between the discharge pipe 202 and the rotating sealing assembly 5.

[0041] 2. Driving and support of the heating cylinder: Before feeding, start the second motor 402 of the drive assembly 4. The output end of the second motor 402 drives the drive gear 403 to rotate. The drive gear 403 meshes with the driven gear ring 105 on the outside of the outer cylinder 101, thereby driving the heating cylinder 1 to rotate as a whole. The heating cylinder 1 is rotated and supported by symmetrically arranged support components 8. The I-shaped support wheel 803 of the support component 8 is supported on the bottom of the annular support seat 106 on the outer side of the outer cylinder 101. Two sets of support frames 802 are symmetrically fixed on the second base 801 to ensure the stability of the heating cylinder 1 during rotation and to avoid deviation or shaking. At the same time, the structural design of the I-shaped support wheel 803 can reduce the friction between it and the annular support seat 106, reduce energy consumption, and achieve energy saving effect.

[0042] The annular protective shell 404 covers the outside of the driven gear ring 105, which can prevent dust and material debris from entering the gear meshing point and extend the service life of the drive assembly 4.

[0043] 3. High-temperature heat treatment: After being crushed, the material passes through the discharge pipe 202 and enters the heating cylinder 1 after passing through the corresponding outer fixed seal. The burner 6 fixed on the outer fixed seal at the other end of the heating cylinder 1 is activated, and the burner 6 introduces a high-temperature flame into the heating cylinder 1 to perform high-temperature heat treatment on the internal material. The heating cylinder 1 adopts a three-layer structure of outer cylinder 101, insulation layer 102, and inner cylinder 107. The insulation layer 102 is laid between the inner wall of outer cylinder 101 and inner cylinder 107, which can effectively reduce heat loss, reduce the energy consumption of burner 6, and achieve the purpose of energy saving. The sealing and positioning components (plug ring 110 and sealing ring 109) between the two ends of the outer cylinder 101 and the inner cylinder 107 can ensure the sealing of the heating cylinder 1 and prevent high-temperature gas leakage. At the same time, they fix the relative positions of the outer cylinder 101 and the inner cylinder 107 to avoid structural deformation due to thermal expansion and contraction during the heating process. The connecting ends (connecting ring 111 and internal threaded cylinder 112) are screwed to the outer sides of both ends of the outer cylinder 101 through the internal threaded cylinder 112, which facilitates the disassembly, maintenance and repair of the heating cylinder 1.

[0044] 4. Ensure uniform mixing and heating of materials: While the heating cylinder 1 is rotating, the first motor 7 is started. The first motor 7 drives the stirring and discharging assembly to work. The first rotating shaft 9 of the stirring and discharging assembly is fixedly extended through the two sets of central rotating cylinders 5022. As the first motor 7 rotates, the stirring and discharging spiral blades 10 on the first rotating shaft 9 rotate synchronously to stir the material in the heating cylinder 1, break the material accumulation state, and make the material fully contact with the high temperature gas, ensuring that all materials are heated evenly and improving the heat treatment effect. The material-discharging plate 11 is located at the bottom of the end of the discharge pipe 202. It can disperse the material discharged from the discharge pipe 202 in a timely manner to prevent the material from accumulating near the discharge port. At the same time, it assists the material in moving within the heating cylinder 1 to prepare for subsequent discharge.

[0045] 5. Waste gas treatment and recycling: During the high-temperature heat treatment process, waste gas is generated. The gas circulation treatment component 3 is started, and the first solenoid valve 304 on the inlet pipe 302 and the second solenoid valve 305 on the outlet pipe 303 are opened. The waste gas in the heating cylinder 1 enters the inlet pipe 302 through the rotating sealing components 5 on both sides (the channel formed by matching the first side slot 5012 and the second side slot 5034) and then enters the treatment box 301. After the exhaust gas enters the treatment box 301, it is treated by the filter plate 309 and activated carbon, and then the entire treatment box 301 is filled by the air guide channel 308 at the bottom of the middle of the I-shaped frame 306. The filtered clean gas still has a certain amount of heat, and then it is circulated into the heating cylinder 1. When the burner 6 is not working intermittently, the temperature inside the heating cylinder 1 can be maintained, realizing gas recycling. This reduces the emission of harmful gases and recovers the waste heat in the exhaust gas, further improving the energy-saving effect of the device. The sealing cover 311 can be opened to facilitate the replacement of the filter plate 309 and the replenishment of activated carbon. The sealing plate 310 ensures the sealing between the filter plate 309 and the I-beam frame 306, preventing the exhaust gas from being discharged directly without filtration.

[0046] 6. Material discharge and collection: After the material has completed high-temperature heat treatment, stop the burner 6 and the second motor 402. Open the arc-shaped sealing plate 104 (the arc-shaped sealing plate 104 is hinged to the outer surface of the outgoing material channel 103, making it easy to open and close), start the first motor 7, and the stirring and discharging spiral blades 10 rotate in the opposite direction to push the processed material in the heating cylinder 1 to the discharge port. The material falls into the receiving trough 12, completing the entire high-temperature heat treatment process of the waste lithium battery. After processing is complete, close the arc-shaped sealing plate 104, clean the material in the receiving trough 12, and then proceed with the next batch of processing.

[0047] 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 high-temperature energy-saving heat treatment device for waste lithium batteries, comprising a feeding assembly (2), a heating cylinder (1), and a receiving trough (12) arranged sequentially, characterized in that: The heating cylinder (1) is driven to rotate by the driving assembly (4), and the heating cylinder (1) is rotated and supported by the support assemblies (8) arranged symmetrically at the front and rear. The heating cylinder (1) is connected to two ends of a rotating sealing assembly (5). The rotating sealing assembly (5) includes an outer fixed seal that is rotatably connected to both ends of the heating cylinder (1) and an inner dynamic seal (502) that is rotatably connected to the inner side of the outer fixed seal. The discharge pipe (202) of the feeding assembly (2) extends into the heating cylinder (1) after passing through the corresponding outer sealing element. A burner (6) is fixed on the outer sealing element at the other end of the heating cylinder (1). A gas circulation processing component (3) is connected between the two sets of outer fixed seals, and a stirring and discharging component driven by the first motor (7) is fixed in the middle between the two sets of inner dynamic seals (502).

2. The energy-saving high-temperature heat treatment device for waste lithium batteries according to claim 1, characterized in that: The heating cylinder (1) includes an outer cylinder (101), an insulation layer (102) laid on the inner wall of the outer cylinder (101), an inner cylinder (107) disposed inside the insulation layer (102), a sealing and positioning component fixed between the two ends of the outer cylinder (101) and the inner cylinder (107), and connecting ends fixed on the outer sides of both ends of the outer cylinder (101). The sealing positioning component includes a plug ring (110) inserted between the two ends of the outer cylinder (101) and the inner cylinder (107) and a sealing ring (109) fixed to the outer end of the plug ring (110). The sealing ring (109) is sealed and fixed to the two ends of the outer cylinder (101) and the inner cylinder (107). The connecting end includes a connecting ring (111) and an internally threaded cylinder (112) fixed to the inner end of the connecting ring (111). The internally threaded cylinder (112) is screwed to the outer sides of both ends of the outer cylinder (101).

3. The energy-saving high-temperature heat treatment device for waste lithium batteries according to claim 2, characterized in that: A set of driven toothed rings (105) are fixed on the outside of the outer cylinder (101); The drive assembly (4) includes a first base (401), an annular protective shell (404) fixed on the first base (401), a second motor (402) fixed on the bottom side of the annular protective shell (404), and a drive gear (403) fixed after the output end of the second motor (402) extends into the annular protective shell (404). The drive gear (403) meshes with the driven gear ring (105), and the annular protective shell (404) covers the outside of the driven gear ring (105).

4. The energy-saving high-temperature heat treatment device for waste lithium batteries according to claim 2, characterized in that: Two sets of annular bearing seats (106) are fixed on the outer side of the outer cylinder (101) in a symmetrical manner. The support assembly (8) includes a second base (801), two sets of support frames (802) symmetrically fixed at the upper end of the second base (801), and I-shaped support wheels (803) provided on the support frames (802). The I-shaped support wheel (803) is supported on the bottom of the corresponding annular bearing seat (106).

5. The energy-saving high-temperature heat treatment device for waste lithium batteries according to claim 2, characterized in that: The outer sealing element includes an annular inner sealing seat (501) and an annular outer sealing assembly (503). The annular outer sealing assembly (503) is fixed to the outer end of the annular inner sealing seat (501) by screws (5035); The annular outer sealing assembly (503) includes an annular outer sealing seat (5031) and an annular protrusion (5032) disposed on the inner side of the annular outer sealing seat (5031), wherein the annular protrusion (5032) is inserted centrally into the connecting ring (111).

6. The energy-saving high-temperature heat treatment device for waste lithium batteries according to claim 5, characterized in that: The inner dynamic seal (502) includes a central rotating cylinder (5022) whose two ends are respectively inserted into the corresponding annular inner sealing seat (501) and annular outer sealing seat (5031), and a sealing protrusion ring (5021) provided on the outer side of the central rotating cylinder (5022). The sealing protrusion ring (5021) is inserted into the corresponding annular protrusion (5032).

7. The energy-saving high-temperature heat treatment device for waste lithium batteries according to claim 6, characterized in that: The mixing and discharging assembly includes a first rotating shaft (9) that is fixed through and extends from two sets of central rotating cylinders (5022), a mixing and discharging spiral blade (10) fixed on the first rotating shaft (9), and several sets of material-pushing plates 11, the material-pushing plates 11 being located at the bottom of the end of the discharge pipe (202).

8. The energy-saving high-temperature heat treatment device for waste lithium batteries according to claim 1, characterized in that: The gas circulation processing assembly (3) includes a processing box (301), an inlet pipe (302) and an outlet pipe (303) fixed on the upper part of both sides of the processing box (301), and a filter assembly installed inside the processing box (301). The intake pipe (302) is provided with a first solenoid valve (304), and the exhaust pipe (303) is provided with a second solenoid valve (305). The filter assembly includes an I-shaped frame (306) disposed inside the processing box (301), slide rails (307) fixed at equal intervals inside the I-shaped frame (306), a filter plate (309) sliding between two sets of horizontal slide rails (307), and a sealing plate (310) fixed at the end of the filter plate (309). Activated carbon is filled between adjacent filter plates (309); The bottom of the I-shaped frame (306) is provided with an air guide channel (308). The processing box (301) is provided with a sealing cover (311) at the outer opening.

9. The energy-saving high-temperature heat treatment device for waste lithium batteries according to claim 1, characterized in that: The feeding assembly (2) includes a feeding hopper (201) fixed at the upper end of the third base (204) by a support leg (203) and a crushing and discharging assembly installed inside the feeding hopper (201); The discharge pipe (202) is fixed to the bottom side of the feeding hopper (201), and the third motor (205) is fixed to the bottom of the feeding hopper (201). The crushing and discharging assembly includes a second rotating shaft (208) whose output end of a third motor (205) extends into the feeding hopper (201), a crushing spiral blade (207) fixed on the upper part of the second rotating shaft (208), and several sets of discharge plates (206) fixed on the bottom of the second rotating shaft (208).

10. The energy-saving high-temperature heat treatment device for waste lithium batteries according to claim 1, characterized in that: The discharge pipe (202) is connected to a positioning frame (209) after passing through the corresponding outer sealing element. The top of the positioning frame (209) is provided with two sets of L-shaped brackets (210). The valve plate (212) is movably connected between the two sets of L-shaped brackets (210) by a pin (211).

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