High-temperature anaerobic pyrolysis equipment for waste battery recycling

Abstract

The application provides a high-temperature anaerobic pyrolysis equipment for waste battery recycling, and relates to the field of environmental protection equipment, which comprises a waste crushing unit, a melting conveying unit, a pyrolysis unit, a waste residue collecting unit and a waste gas treatment unit, and a waste heat recovery unit is installed on the melting conveying unit and the pyrolysis unit. The high-temperature anaerobic pyrolysis equipment for waste battery recycling can transfer the heat emitted by the melting conveying cylinder and the pyrolysis cylinder to water for storage by using the heat conduction principle, and then retransmit the heat to the melting conveying cylinder and the pyrolysis cylinder, so that the melting conveying cylinder and the pyrolysis cylinder can always maintain the melting temperature and the pyrolysis temperature. The equipment realizes the purpose of waste heat recovery, saves the power consumption, achieves energy saving and environmental protection, reduces the pyrolysis cost of battery waste, and avoids the damage of the melting conveying cylinder and the pyrolysis cylinder caused by high-temperature corrosion.

Description

Technical Field

[0001] This invention relates to the field of environmental protection equipment technology, specifically a high-temperature anaerobic pyrolysis device for recycling and processing waste batteries. Background Technology

[0002] Used batteries contain heavy metals such as mercury, cadmium, manganese, and lead. When the surface of used batteries is corroded by sun and rain, the heavy metal components inside can seep into the soil and groundwater. If people eat crops grown in contaminated land or drink contaminated water, these toxic heavy metals will enter their bodies and slowly accumulate, posing a great threat to human health. The recycling and processing of used batteries involves heat treatment to extract the metals and other valuable substances, such as zinc, cadmium, and manganese, from the used batteries and then reuse them in production.

[0003] Most waste battery pyrolysis equipment directly puts the crushed waste batteries into the pyrolysis box and then uses an electric heater to heat it for a long time. During the heating process, a large amount of heat will be transferred to the outer wall of the pyrolysis box due to the principle of heat conduction. Therefore, it is necessary to heat the inside of the pyrolysis box for a longer time. The heating time is long and the energy consumption is high. The cost of waste battery pyrolysis is high and the environmental protection is poor. Moreover, the high temperature on the outer wall of the pyrolysis box is often dissipated to the outside, resulting in waste. The pyrolysis box is also often corroded due to the high temperature, which affects its service life.

[0004] Therefore, this application provides a high-temperature anaerobic pyrolysis device for the recycling and processing of waste batteries to meet the requirements. Summary of the Invention

[0005] The purpose of this invention is to provide a high-temperature anaerobic pyrolysis device for recycling and processing waste batteries in order to solve the above-mentioned problems. This device addresses the technical issues in the prior art, such as long heating time and high energy consumption in the pyrolysis box, high cost of waste battery pyrolysis, and the fact that the outer wall of the pyrolysis box is often corroded by high temperature, affecting its service life.

[0006] This invention is achieved through the following technical solution: a high-temperature anaerobic pyrolysis device for recycling and processing waste batteries, comprising:

[0007] Waste crushing unit, which is used to crush waste batteries into battery waste;

[0008] A melting and conveying unit is used to receive battery waste and melt the battery waste into a paste-like waste. The melting and conveying unit includes a melting and conveying cylinder located below the waste crushing unit.

[0009] A pyrolysis unit is located below the discharge end of the melting and conveying unit and is used to receive and pyrolyze the paste-like waste. The pyrolysis unit includes a pyrolysis cylinder, the top left side of which is connected to the melting and conveying cylinder through a feeding cylinder.

[0010] Waste collection unit, which is used to collect the solid residue of the paste-like waste after pyrolysis, is installed at the discharge end of the pyrolysis unit;

[0011] An exhaust gas treatment unit is used to collect and treat the exhaust gas generated from the paste-like waste after pyrolysis. The exhaust gas treatment unit is installed on top of the pyrolysis unit.

[0012] The melting and conveying unit and the pyrolysis unit are equipped with a waste heat recovery unit. The waste heat recovery unit includes a heat collection box with an opening at the top and a heat-conducting bracket installed inside the heat collection box. The melting and conveying cylinder passes through the left side of the heat collection box from left to right and extends into the heat collection box. The pyrolysis cylinder passes through the right side of the heat collection box from right to left and extends into the heat collection box. A temperature sensor is installed on the top inner side of the heat collection box.

[0013] Preferably, both the melting conveying cylinder and the pyrolysis cylinder are equipped with a spiral pushing mechanism. A second motor is installed on the left side of the melting conveying cylinder, which drives the spiral pushing mechanism inside the melting conveying cylinder to push the paste-like waste into the pyrolysis cylinder. A second electric heater is installed on the outer wall of the melting conveying cylinder to heat its inner cavity. A feed port for battery waste is opened on the left side of the top of the melting conveying cylinder. A third electric heater is installed on the outer wall of the pyrolysis cylinder to heat its inner cavity. A third motor is installed on the right side of the pyrolysis cylinder, which drives the spiral pushing mechanism inside the pyrolysis cylinder to push the solid residue to the waste collection unit. The spiral pushing mechanism consists of a main shaft and spiral blades that are spaced apart and continuously connected to the main shaft.

[0014] Preferably, the heat-conducting support includes a first heat-conducting plate and a second heat-conducting plate that are vertically aligned, a connecting rod that is horizontally connected between the bottom surfaces of the first heat-conducting plate and the bottom surfaces of the second heat-conducting plate, and a reinforcing plate that is horizontally connected between the top surfaces of the first heat-conducting plate and the top surfaces of the second heat-conducting plate. The first heat-conducting plate has a No. 1 through hole on its left side for the right side of the melting conveying cylinder to extend into, and the outer wall of the melting conveying cylinder is tightly attached to the wall of the No. 1 through hole. The second heat-conducting plate has a No. 2 through hole on its right side for the left side of the pyrolysis cylinder to extend into, and the outer wall of the pyrolysis cylinder is tightly attached to the wall of the No. 2 through hole. Both the first heat-conducting plate and the second heat-conducting plate are made of aluminum, copper, steel or iron.

[0015] Preferably, a discharge pipe is installed on the left bottom surface of the heat collection box, and the inner bottom surface of the heat collection box is an inclined surface sloping from right to left with an inclination angle of 20-70 degrees; an upper filter screen is horizontally connected inside the heat collection box above the melting conveying cylinder, and a lower filter screen is horizontally connected inside the heat collection box below the pyrolysis cylinder; a box cover is detachably connected to the top of the heat collection box, and the top of the box cover is provided with an air outlet and an installation hole, and an injection pipe is installed in the installation hole and extends vertically into the interior of the heat collection box. The injection pipe can inject water into the heat collection box, and the water surface collected inside the heat collection box is close to but not in contact with the lower filter screen.

[0016] Preferably, the upper or lower filter screen has an opening on its mesh body for the heat-conducting plate to pass through vertically, and the right side of the upper or lower filter screen has an insertion hole for the injection pipe to pass through.

[0017] Preferably, the waste heat recovery unit further includes a fan installed on the lower left side of the heat collection box. The fan blades are installed on the left side wall inside the heat collection box and are located above the lower filter screen. The fan is used to agitate the heat inside the heat collection box so that the waste heat collected by the heat collection box flows and blows towards the outer wall of the melting conveying cylinder or the pyrolysis cylinder.

[0018] Preferably, the waste collection unit includes a discharge pipe connected to the right side of the bottom end of the pyrolysis cylinder and a collection bin connected to the discharge pipe.

[0019] Preferably, the waste gas treatment unit includes a condensation mechanism, which consists of a condensation tank, a buffer tank, a water collection tank, and a collection hopper. The bottom end of the condensation tank is connected to a waste gas outlet pipe, and the waste gas outlet pipe is connected to the right side of the top of the pyrolysis cylinder.

[0020] Preferably, the waste crushing unit includes a crushing box installed above the melting conveyor cylinder with open structures at both the top and bottom, a hopper installed on the top of the crushing box, and a crushing assembly installed inside the crushing box. The crushing assembly consists of two sets of crushing rollers placed horizontally inside the crushing box and a No. 1 motor installed above the box cover that drives the two sets of crushing rollers to crush the waste batteries.

[0021] Preferably, a movable baffle is installed at the bottom of the crushing bin below the two sets of crushing rollers. The movable baffle is used to movably seal the lower opening of the crushing bin. The movable baffle includes an upper baffle plate and a lower baffle plate that pass laterally through and extend into the crushing bin, a connecting plate between the left side of the bottom of the upper baffle plate and the left side of the top of the lower baffle plate, and a cylinder installed on the left side of the crushing bin to drive the upper baffle plate or the lower baffle plate to move left and right.

[0022] This invention provides a high-temperature anaerobic pyrolysis device for recycling and processing waste batteries, which has the following beneficial effects:

[0023] 1. This high-temperature anaerobic pyrolysis equipment for waste battery recycling utilizes a combination of a heat collection box and a heat-conducting support. It transfers the heat radiated from the outer walls of the melting conveyor and pyrolysis cylinders to water for storage via heat conduction. The heated water then reheats the melting conveyor and pyrolysis cylinders, maintaining their melting and pyrolysis temperatures throughout the process. This prevents internal temperature fluctuations from affecting the pyrolysis efficiency of the waste batteries, maximizing the full pyrolysis of the waste batteries. It achieves waste heat recovery, energy conservation, and environmental protection, significantly reducing the cost of pyrolysis. Furthermore, the waste heat recovery unit transfers the surface temperature of the melting conveyor and pyrolysis cylinders, preventing damage from high-temperature corrosion and extending their service life. This contributes to the long-term use of this high-temperature anaerobic pyrolysis equipment for waste battery recycling.

[0024] 2. This high-temperature oxygen-free pyrolysis equipment for recycling and processing waste batteries uses a set drive gear and driven gear meshing to enable the No. 1 crushing roller and the No. 2 crushing roller to achieve extrusion crushing of waste batteries, which greatly improves the crushing effect of waste batteries and makes the crushed particles of waste batteries finer and more delicate, which is conducive to the subsequent rapid heating of waste batteries into paste-like waste. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural view of the high-temperature oxygen-free pyrolysis equipment of the present invention;

[0026] Figure 2 This is a structural diagram of the combined structure of the heat collection box, melting conveying cylinder, and pyrolysis cylinder of the present invention;

[0027] Figure 3 This is a three-dimensional structural view of the combination of the melting conveyor cylinder and the pyrolysis cylinder of the present invention;

[0028] Figure 4 This is a cross-sectional view of the structure of the melting conveyor and pyrolysis cylinder of the present invention in their installed state;

[0029] Figure 5 This is a front view of the structure of the combination of the crushing bin and the crushing component of the present invention;

[0030] Figure 6 This is a three-dimensional structural view of the material crusher of the present invention;

[0031] Figure 7 This is a top view of the combined structure of the crushing bin and the crushing assembly of the present invention;

[0032] Figure 8This is a three-dimensional structural view of the melting conveyor cylinder of the present invention;

[0033] Figure 9 This is a three-dimensional structural view of the solar collector box of the present invention in its operational state;

[0034] Figure 10 This is a three-dimensional structural view of the solar collector box of the present invention in another usage state;

[0035] Figure 11 This is a three-dimensional structural view of the heat-conducting bracket of the present invention;

[0036] Figure 12 This is a three-dimensional view of the structure of the filter screen of the present invention.

[0037] Figure label:

[0038] 1. Machine base; 2. Crushing bin; 201. Hopper; 202. Upper slot; 203. Lower slot; 204. First through hole; 205. Second through hole; 3. Crushing assembly; 301. First crushing roller; 3011. Drive gear; 302. Second crushing roller; 3021. Driven gear; 303. Protective cover; 304. Convex tooth; 4. First motor; 5. Melting conveyor cylinder; 501. Main shaft; 502. Spiral blade; 503. Feeding cylinder; 504. Feed inlet; 505. Discharge outlet; 6. Second motor; 7. Second electric heater; 8. Heat collection box; 801. Box cover; 8011. Mounting hole; 802. Air outlet; 803. Discharge pipe; 804. Injection pipe; 805. Viewing window; 806. Left through hole; 807. Right through hole; 9. Through hole; 901. Heat-conducting bracket; 901. First heat-conducting plate; 9011. First through hole; 902. Second heat-conducting plate; 9021. Second through hole; 903. Connecting rod; 904. Reinforcing plate; 10. Pyrolysis cylinder; 11. Motor No. 3; 12. Collection bin; 1201. Discharge pipe; 13. Fan; 14. Condensation mechanism; 1401. Waste gas outlet pipe; 1402. Condensation tank; 1403. Buffer tank; 1404. Water collection tank; 1405. Collection hopper; 15. Lower filter screen; 1501. Inlet; 1502. Inlet hole; 16. Upper filter screen; 17. Temperature sensor; 18. Electric heater No. 3; 19. Movable baffle; 1901. Upper baffle plate; 1902. Lower baffle plate; 1903. Connecting plate; 1904. Cylinder. Detailed Implementation

[0039] Please see Figures 1-12As shown, this embodiment of the invention provides a high-temperature anaerobic pyrolysis device for recycling and processing waste batteries, including a waste crushing unit, a melting and conveying unit, a pyrolysis unit, a waste residue collection unit, and a waste gas treatment unit. The high-temperature anaerobic pyrolysis device also includes a machine base 1 for supporting the waste crushing unit, the melting and conveying unit, the pyrolysis unit, the waste residue collection unit, and the waste gas treatment unit. The waste crushing unit is used to crush waste batteries into battery waste. The melting and conveying unit is used to receive the battery waste and melt it into a paste-like waste. The melting and conveying unit includes a melting and conveying cylinder 5 located below the waste crushing unit. The pyrolysis unit is located below the discharge end of the melting and conveying unit and is used to receive and pyrolyze the paste-like waste. The pyrolysis unit includes a pyrolysis cylinder 10, with the top of the pyrolysis cylinder 10... The left side is connected to the melting conveying cylinder 5 via the feeding cylinder 503; the waste residue collection unit is used to collect the solid residue of the paste-like waste after pyrolysis, and the waste residue collection unit is installed on the discharge end of the pyrolysis unit; the waste gas treatment unit is used to collect and treat the waste gas generated by the paste-like waste after pyrolysis, and the waste gas treatment unit is installed on the top of the pyrolysis unit; wherein, the melting conveying unit and the pyrolysis unit are equipped with waste heat recovery units, the waste heat recovery unit includes a heat collection box 8 with an open top end, and a heat-conducting bracket 9 installed inside the heat collection box 8, the melting conveying cylinder 5 passes through the left side of the heat collection box 8 from left to right and extends into the heat collection box 8, the pyrolysis cylinder 10 passes through the right side of the heat collection box 8 from right to left and extends into the heat collection box 8, and a temperature sensor 17 is installed on the top inner side of the heat collection box 8.

[0040] In this embodiment, please refer to Figure 3 , Figure 4 and Figure 5 As shown, the waste crushing unit includes a crushing box 2 with open top and bottom ends, installed above the melting conveyor cylinder 5; a hopper 201 installed on top of the crushing box 2; and a crushing assembly 3 installed inside the crushing box 2. The crushing assembly 3 consists of two sets of crushing rollers horizontally placed inside the crushing box 2, and a primary motor 4 installed above the box cover 801 that drives the two sets of crushing rollers to crush the waste batteries. The two sets of crushing rollers are a primary crushing roller 301 and a secondary crushing roller 302. The roller shaft of the primary crushing roller 301 extends out from the left side of the crushing box 2 and is fitted with a drive gear 3011. The secondary crushing roller 301... The roller shaft of the first crushing roller 301 extends out of the left side of the crushing box 2 and is fitted with a driven gear 3021. The driving gear 3011 meshes with the driven gear 3021. The roller shaft of the first crushing roller 301 extends out of the right side of the crushing box 2 and is connected to the output shaft of the first motor 4 via a coupling. A protective cover 303 is installed on the left side of the crushing box 2 to protect the driving gear 3011 or the driven gear 3021. The inner wall of the crushing box 2 is provided with convex teeth 304 that cooperate with the two sets of crushing rollers. With the cooperation of the convex teeth 304 and the two sets of crushing rollers, the waste batteries can be crushed into finer and more refined waste particles.

[0041] The bottom of the crushing bin 2 is equipped with a movable baffle 19 located below the two sets of crushing rollers. This movable baffle 19 is used to movably seal the lower opening of the crushing bin 2. The movable baffle 19 includes an upper baffle plate 1901 and a lower baffle plate 1902 that pass laterally through and extend into the crushing bin 2; a connecting plate 1903 connecting the left side of the bottom of the upper baffle plate 1901 and the left side of the top of the lower baffle plate 1902; and a cylinder 1904 installed on the left side of the crushing bin 2 to drive the upper baffle plate 1901 or the lower baffle plate 1902 to move left and right. The top view of the material plate 1902 is rectangular; the inner wall of the crushing bin 2 has an upper slot 202 and a lower slot 203 on the right side. The upper slot 202 allows the right side of the upper baffle plate 1901 to be inserted, and the lower slot 203 allows the right side of the lower baffle plate 1902 to be inserted. The left side of the crushing bin 2 has a first through hole 204 that is opposite to the upper slot 202. The upper baffle plate 1901 passes through the first through hole 204 laterally. The left side of the crushing bin 2 has a second through hole 205 that is opposite to the lower slot 203. The lower baffle plate 1902 passes through the second through hole 205 laterally.

[0042] The working principle of this waste crushing unit is as follows: The cylinder 1904 is pre-activated to block the lower opening of the crushing box 2 with the upper baffle 1901 and lower baffle 1902, after which the cylinder 1904 stops operating. When the first motor 4 runs, it drives the first crushing roller 301 to rotate clockwise. Under the meshing transmission principle of the driving gear 3011 and driven gear 3021, the second crushing roller 302 is driven to rotate counterclockwise. Thus, the first crushing roller 301 and the second crushing roller 302 achieve compression crushing of the waste batteries. The crushed battery waste is collected in… A conventional weighing sensor can be installed on the upper baffle plate 1901 during use. When the weighing sensor detects that the waste battery material has reached a certain weight, the cylinder 1904 is activated to pull the upper baffle plate 1901 and the lower baffle plate 1902 away from the lower opening of the waste bin 2, thereby opening the lower opening and allowing the waste battery material to fall freely into the melting conveyor cylinder 5. When there is no waste battery material on the upper baffle plate 1901, the cylinder 1904 drives the upper baffle plate 1901 and the lower baffle plate 1902 to block the lower opening and then stops the operation of the cylinder 1904.

[0043] In this embodiment, please refer to Figure 1 , Figure 2 and Figure 3As shown, both the melting conveyor cylinder 5 and the pyrolysis cylinder 10 are equipped with a spiral pushing mechanism. A second motor 6 is installed on the left side of the melting conveyor cylinder 5, which drives the spiral pushing mechanism inside the melting conveyor cylinder 5 to push the paste-like waste material into the pyrolysis cylinder 10. A second electric heater 7 is installed on the outer wall of the melting conveyor cylinder 5 to heat its inner cavity. An inlet 504 for battery waste is opened on the top left side of the melting conveyor cylinder 5, and an outlet 505 is opened on the bottom left side of the melting conveyor cylinder 5. The inner cavity of the feeding cylinder 503 communicates with the outlet 505. The outer wall of the pyrolysis cylinder 10 is equipped with a third electric heater 18 for heating its inner cavity. A third motor 11 is installed on the right side of the pyrolysis cylinder 10. The third motor 11 is used to drive the spiral pushing mechanism inside the pyrolysis cylinder 10 to push the solid residue to the waste collection unit. The spiral pushing mechanism consists of a main shaft 501 and spiral blades 502 that are spaced apart and continuously connected to the shaft of the main shaft 501. Under the drive of the second motor 6 or the third motor 11, the main shaft 501 drives the spiral blades 502 to rotate spirally, thereby generating a continuous pushing force to move the paste-like waste or the waste after pyrolysis.

[0044] When the melting and conveying unit is in use, the inside of the melting and conveying cylinder 5 is electrically heated by the second electric heater 7, so that the battery waste in the melting and conveying cylinder 5 is heated to a paste-like waste. The heated paste-like waste is then moved into the pyrolysis cylinder 10 by starting the second motor 6 to drive the spiral blade 502 to rotate. Then, the paste-like waste falling into the pyrolysis cylinder 10 is heated to the temperature required for the pyrolysis of battery waste by the third electric heater 18, so that the paste-like waste can be pyrolyzed.

[0045] In this embodiment, please refer to Figure 1 , Figure 2 , Figure 8 , Figure 9 and Figure 10As shown, the heat-conducting bracket 9 includes a vertically aligned first heat-conducting plate 901 and a second heat-conducting plate 902, a connecting rod 903 horizontally connecting the bottom surfaces of the first heat-conducting plate 901 and the second heat-conducting plate 902, and a reinforcing plate 904 horizontally connecting the top surfaces of the first heat-conducting plate 901 and the second heat-conducting plate 902. The first heat-conducting plate 901 and the second heat-conducting plate 902 have a rectangular side view. Both the first heat-conducting plate 901 and the second heat-conducting plate 902 are fixedly installed on the bottom of the heat collection box 8 by fasteners such as screws and bolts. The first heat-conducting plate 901 has a first through hole 9011 on its left side for the right side of the melting conveying cylinder 5 to extend into. The outer wall of the melting conveying cylinder 5 is tightly attached to the wall of the first through hole 9011, and the second heat-conducting plate 902... A second through hole 9021 is provided on the right side of the hot plate 902, extending into the left side of the pyrolysis cylinder 10. The outer wall of the pyrolysis cylinder 10 is tightly attached to the wall of the second through hole 9021. Both the first heat-conducting plate 901 and the second heat-conducting plate 902 are made of, but not limited to, aluminum, copper, steel, or iron. It should be noted that a drain pipe 803 is installed on the bottom left side of the aforementioned heat collection box 8. The drain pipe 803 facilitates the drainage of water injected into the heat collection box 8. The inner bottom surface of the heat collection box 8 is an inclined surface sloping from right to left, with an inclination angle of 20-70 degrees. Preferably, the inclination angle of the inner bottom surface of the heat collection box 8 is 30 degrees, 45 degrees, or 60 degrees. An inclination angle of 30 degrees, 45 degrees, or 60 degrees allows the heat collection box 8 to... Water at the bottom of the inner chamber collects towards the discharge pipe 803, facilitating rapid drainage through the discharge pipe 803. An upper filter screen 16 is horizontally connected inside the heat collection box 8, positioned above the melting conveying cylinder 5. A lower filter screen 15 is horizontally connected inside the heat collection box 8, positioned below the pyrolysis cylinder 10. A cover 801 is detachably connected to the top of the heat collection box 8. The top of the cover 801 has an air vent 802 and a mounting hole 8011. An injection pipe 804 is installed in the mounting hole 8011 and extends vertically into the heat collection box 8. The injection pipe 804 can inject water into the heat collection box 8, and the water collected inside the heat collection box 8 is close to but not in contact with the lower filter screen 15. Heat conduction is achieved by openings on the mesh of the upper filter screen 16 or the lower filter screen 15. The plate passes through a vertical insertion port 1501. The upper filter screen 16 or the lower filter screen 15 has an insertion hole 1502 on the right side of the screen body for the injection pipe 804 to pass through. The waste heat recovery unit also includes a fan 13 installed in the lower left position of the heat collection box 8. The fan blades of the fan 13 are installed on the left side wall inside the heat collection box 8 and are located above the lower filter screen 15. The fan 13 is used to stir the heat inside the heat collection box 8 so that the waste heat collected by the heat collection box 8 flows and blows towards the outer wall of the melting conveying cylinder 5 or the pyrolysis cylinder 10. The filter screen of the upper filter screen 16 or the lower filter screen 15 is embedded with an activated carbon layer and a filter cotton layer to filter the heated water vapor, so that the heat is only transferred to the melting conveying cylinder 5 or the pyrolysis cylinder 10, preventing the melting conveying cylinder 5 or the pyrolysis cylinder 10 from being corroded by moisture.It should be noted that the left side of the solar collector 8 has a left through hole 806 for the melting conveying cylinder 5 to pass through laterally, and the right side of the solar collector 8 has a right through hole 807 for the thermal cracking cylinder 10 to pass through laterally. The front of the solar collector 8 has a viewing window 805, which allows the user to directly observe the water volume inside the solar collector 8 and the status of the heat-conducting support 9.

[0046] The waste heat recovery unit operates as follows: First, a certain amount of water is injected into the heat collection box 8 through the injection pipe 804, with the water surface below the lower filter screen 15. Then, based on the heat conduction principle of the first heat-conducting plate 901 and the second heat-conducting plate 902, the heat dissipated from the outer wall of the melting conveying cylinder 5 and the outer wall of the pyrolysis cylinder 10 is transferred into the water at the bottom of the heat collection box 8, heating the water. The water collects the waste heat dissipated from the outer wall of the melting conveying cylinder 5 and the pyrolysis cylinder 10 and stores it. The heat stored in the water is always dissipated inside the heat collection box 8, and the fan 13 causes the heat to accumulate in the heat collection box. The heat flow within the hot box 8 heats the melting conveyor cylinder 5 and the pyrolysis cylinder 10, thereby ensuring that the melting conveyor cylinder 5 maintains the melting temperature of the paste-like waste material during use, and that the pyrolysis cylinder 10 maintains the pyrolysis temperature during use. This prevents temperature changes inside the melting conveyor cylinder 5 and the pyrolysis cylinder 10 from affecting the pyrolysis effect of the battery waste during the pyrolysis process. This allows for sufficient pyrolysis of the battery waste, while also enabling waste heat recovery and utilization, energy conservation and environmental protection, and reduced energy consumption, thereby lowering the pyrolysis cost of the battery waste.

[0047] In this embodiment, please refer to Figure 1 and Figure 2 As shown, the waste collection unit includes a discharge pipe 1201 connected to the right side of the bottom end of the pyrolysis cylinder 10, and a collection bin 12 connected to the discharge pipe 1201; the waste gas treatment unit includes a condensation mechanism 14, which consists of a condensation tank 1402, a buffer tank 1403, a water collection tank 1404, and a collection hopper 1405. The bottom end of the condensation tank 1402 is connected to a waste gas outlet pipe 1401, which is connected to the right side of the top end of the pyrolysis cylinder 10; pyrolysis The waste gas generated after the paste-like waste in the pyrolysis cylinder 10 is pyrolyzed enters the condenser 1402, buffer tank 1403, water collection tank 1404 and collection hopper 1405 through the waste gas outlet pipe 1401. The waste gas is condensed by the condensation mechanism 14 and then collected by the water collection tank 1404. The waste residue after pyrolysis is introduced into the collection bin 12 through the discharge pipe 1201. During use, a valve can be added to the discharge pipe 1201 to control the waste residue after pyrolysis to fall into the collection bin 12 for collection.

[0048] It should be noted that the condensation principle of the condensation mechanism 14 mentioned in this embodiment is a publicly known technology in the market. The condensation tank 1402, buffer tank 1403, water collection tank 1404 and collection hopper 1405 are conventional structures of the condensation mechanism 14 / condensation device in the market, so they will not be described in detail here. The structure and principle of the No. 1 motor 4, No. 2 motor 6, No. 3 motor 11, temperature sensor 17, No. 2 electric heater 7, No. 3 electric heater 18, cylinder 1904, fan 13, heat conduction plate and the weighing sensor mentioned in this embodiment are publicly known technologies in the market. Conventional models in the market can be used in this embodiment, so they will not be described in detail here.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-temperature anaerobic pyrolysis device for recycling and processing waste batteries, characterized in that, include: Waste crushing unit, which is used to crush waste batteries into battery waste; A melting and conveying unit is used to receive battery waste and melt the battery waste into a paste-like waste. The melting and conveying unit includes a melting and conveying cylinder (5) located below the waste crushing unit. The thermal pyrolysis unit is located below the discharge end of the melting and conveying unit and is used to receive and thermally pyrolyze the paste-like waste. The thermal pyrolysis unit includes a thermal pyrolysis cylinder (10), and the top left side of the thermal pyrolysis cylinder (10) is connected to the melting and conveying cylinder (5) through a feeding cylinder (503). Waste collection unit, which is used to collect the solid residue of the paste-like waste after pyrolysis, is installed at the discharge end of the pyrolysis unit; An exhaust gas treatment unit is used to collect and treat the exhaust gas generated from the paste-like waste material after pyrolysis. The exhaust gas treatment unit is installed on top of the pyrolysis unit. The melting and conveying unit and the thermal decomposition unit are equipped with a waste heat recovery unit. The waste heat recovery unit includes a heat collection box (8) with an open top and a heat-conducting bracket (9) installed inside the heat collection box (8). The melting conveying cylinder (5) passes through the left side of the heat collection box (8) from left to right and extends into the heat collection box (8). The thermal decomposition cylinder (10) passes through the right side of the heat collection box (8) from right to left and extends into the heat collection box (8). A temperature sensor (17) is installed on the top inner side of the heat collection box (8). The heat-conducting bracket (9) includes a first heat-conducting plate (901) and a second heat-conducting plate (902) that are vertically aligned, a connecting rod (903) that is horizontally connected between the bottom surfaces of the first heat-conducting plate (901) and the second heat-conducting plate (902), and a reinforcing plate (904) that is horizontally connected between the top surfaces of the first heat-conducting plate (901) and the top surfaces of the second heat-conducting plate (902). The first heat-conducting plate (901) has a first through hole (9011) on its left side for the right side of the melting conveying cylinder (5) to extend into. The outer wall of the melting conveying cylinder (5) is in close contact with the first through hole (9011). The wall is provided with a second through hole (9021) on the right side of the second heat-conducting plate (902) and the second through hole (9021) extends into the left side of the heat-decomposing cylinder (10). The outer wall of the heat-decomposing cylinder (10) is tightly attached to the wall of the second through hole (9021). The first heat-conducting plate (901) and the second heat-conducting plate (902) are both made of aluminum, copper, steel or iron. The heat collection box (8) is filled with water. Through the cooperation of the heat collection box (8) and the heat-conducting bracket (9), the heat emitted by the melting conveying cylinder (5) and the heat-decomposing cylinder (10) on their outer wall can be transferred to the water for storage using the principle of heat conduction.

2. The high-temperature anaerobic pyrolysis equipment for waste battery recycling and processing according to claim 1, characterized in that: Both the melting conveying cylinder (5) and the pyrolysis cylinder (10) are equipped with a spiral pushing mechanism. A second motor (6) is installed on the left side of the melting conveying cylinder (5). The second motor (6) is used to drive the spiral pushing mechanism inside the melting conveying cylinder (5) to push the paste-like waste into the pyrolysis cylinder (10). A second electric heater (7) is installed on the outer wall of the melting conveying cylinder (5) for heating its inner cavity. An inlet for battery waste is opened on the top left side of the melting conveying cylinder (5). The outer wall of the pyrolysis cylinder (10) is equipped with a No. 3 electric heater (18) for heating its inner cavity. A No. 3 motor (11) is installed on the right side of the pyrolysis cylinder (10). The No. 3 motor (11) is used to drive the spiral pushing mechanism inside the pyrolysis cylinder (10) to push the solid residue to the waste residue collection unit. The spiral pushing mechanism consists of a main shaft (501) and spiral blades (502) that are spaced apart and continuously connected to the shaft of the main shaft (501).

3. The high-temperature anaerobic pyrolysis equipment for waste battery recycling and processing according to claim 2, characterized in that: The bottom left side of the heat collection box (8) is equipped with a discharge pipe (803). The bottom inner surface of the heat collection box (8) is an inclined surface that slopes from right to left, with an inclination angle of 20-70 degrees. The interior of the heat collection box (8) is horizontally connected to an upper filter screen (16) above the melting conveying cylinder (5), and the interior of the heat collection box (8) is horizontally connected to a lower filter screen (15) below the pyrolysis cylinder (10). The top of the heat collection box (8) is detachably connected to a box cover (801). The top of the box cover (801) is provided with an air outlet (802) and an installation hole (8011). An injection pipe (804) is installed in the installation hole (8011) and extends vertically into the interior of the heat collection box (8). The injection pipe (804) can inject water into the heat collection box (8), and the water surface of the water collected inside the heat collection box (8) is close to but not attached to the lower filter screen (15).

4. The high-temperature anaerobic pyrolysis equipment for waste battery recycling and processing according to claim 3, characterized in that: The upper filter (16) or lower filter (15) has an inlet (1501) for the heat-conducting plate to pass through vertically, and the upper filter (16) or lower filter (15) has an inlet (1502) for the injection pipe (804) to pass through on the right side of the mesh body.

5. The high-temperature anaerobic pyrolysis equipment for waste battery recycling and processing according to claim 4, characterized in that: The waste heat recovery unit also includes a fan (13) installed on the lower left side of the heat collection box (8). The fan blades of the fan (13) are installed on the left side wall inside the heat collection box (8) and are located above the lower filter screen (15). The fan (13) is used to stir the heat inside the heat collection box (8) so that the waste heat collected by the heat collection box (8) flows and blows towards the outer wall of the melting conveying cylinder (5) or the thermal cracking cylinder (10).

6. The high-temperature anaerobic pyrolysis equipment for waste battery recycling and processing according to claim 5, characterized in that: The waste collection unit includes a discharge pipe (1201) connected to the right side of the bottom end of the pyrolysis cylinder (10) and a collection bin (12) connected to the discharge pipe (1201).

7. The high-temperature anaerobic pyrolysis equipment for waste battery recycling and processing according to claim 1, characterized in that: The waste gas treatment unit includes a condensation mechanism (14), which consists of a condensation tank (1402), a buffer tank (1403), a water collection tank (1404), and a collection hopper (1405). The bottom end of the condensation tank (1402) is connected to a waste gas outlet pipe (1401), and the waste gas outlet pipe (1401) is connected to the right side of the top of the thermal cracking cylinder (10).

8. The high-temperature anaerobic pyrolysis equipment for waste battery recycling and processing according to claim 7, characterized in that: The waste crushing unit includes a crushing box (2) installed above the melting conveying cylinder (5) with open structures at both ends, a hopper (201) installed on the top of the crushing box (2), and a crushing assembly (3) installed inside the crushing box (2). The crushing assembly (3) consists of two sets of crushing rollers placed horizontally inside the crushing box (2) and a No. 1 motor (4) installed above the box cover (801) and driving the two sets of crushing rollers to crush the waste batteries.

9. The high-temperature anaerobic pyrolysis equipment for waste battery recycling and processing according to claim 8, characterized in that: The inner bottom of the crushing box (2) is equipped with a movable baffle (19) located below the two sets of crushing rollers. The movable baffle (19) is used to seal the lower opening of the crushing box (2). The movable baffle (19) includes an upper baffle plate (1901) and a lower baffle plate (1902) that pass through and extend into the crushing box (2) laterally, a connecting plate (1903) connecting the left side of the bottom end of the upper baffle plate (1901) and the left side of the top end of the lower baffle plate (1902), and a cylinder (1904) installed on the left side of the crushing box (2) to drive the upper baffle plate (1901) or the lower baffle plate (1902) to move left and right.

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