Ammonium sulfate wastewater treatment equipment for recycling lithium batteries

Abstract

The invention discloses ammonium sulfate wastewater treatment equipment for lithium battery recycling, and relates to the technical field of ammonium sulfate wastewater treatment.The ammonium sulfate wastewater treatment equipment comprises a wastewater storage tank, a tank cover is tightly clamped in the inner wall of the top end of the wastewater storage tank, and a base is fixedly connected to the outer wall of the bottom of the wastewater storage tank; organic pollutants are adsorbed by the activated carbon filter plate through a pore structure, the chromaticity and COD of wastewater are remarkably reduced, the rotary negative pressure structure drives the hollow brush plate to automatically rotate, filter pore blockage is cleaned, manual maintenance is avoided, the service life of the filter plate is prolonged, waste heat at the top of the wastewater tank is sucked by the corrugated pipe, and after baffling heating of the heating pipe of the U-shaped air pipe, the waste heat is recycled. Heat is guided into the wastewater through the gas conveying pipe, so that the treatment efficiency is improved; an inclined arc plate is designed to prevent waste water from impacting a gas conveying pipe and ensure uniform mixing of heat, an electric cylinder is linked with a conical block, a sleeve rod and other parts, automatic control over rotation of a brush plate and filtering and cleaning is achieved, energy consumption is reduced, and structural stability and action accuracy are ensured through sliding connection of a magnetic sliding block and a bent sleeve ring.

Description

Technical Field

[0001] This invention belongs to the field of ammonium sulfate wastewater treatment technology, specifically an ammonium sulfate wastewater treatment device for lithium battery recycling. Background Technology

[0002] Ammonium sulfate has a wide range of uses: it is mainly used as fertilizer, suitable for various soils and crops; it can also be used in textiles, leather, medicine and other fields. Edible ammonium sulfate is produced by dissolving industrial ammonium sulfate in distilled water, adding arsenic removal agents and heavy metal removal agents, purifying the solution, filtering, evaporating and concentrating, cooling and crystallizing, centrifuging and drying. It is used as a food additive, dough conditioner and yeast nutrient. Currently, the main method for treating ammonium sulfate wastewater is heating and evaporating the water. Commonly used methods include multi-effect evaporation and concentration and mechanical compression evaporation and concentration systems. However, these methods are energy-intensive in practice, and the wastewater becomes more acidic after evaporation and concentration, which can easily damage the equipment due to the corrosive exhaust gas. In addition, the ammonium sulfate mother liquor may form a paste-like slurry due to its fine particles or viscosity, which makes it difficult for the subsequent centrifuge to separate the liquid effectively. This requires regular cleaning of the evaporator and pipelines, resulting in a lack of efficiency improvement. Summary of the Invention

[0003] To address the problems mentioned in the background section, this invention provides an ammonium sulfate wastewater treatment device for lithium battery recycling.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an ammonium sulfate wastewater treatment device for lithium battery recycling, comprising a wastewater storage tank, a tank cover tightly fastened to the inner wall of the top of the wastewater storage tank, a base fixedly connected to the outer wall of the bottom of the wastewater storage tank, and a wastewater recycling and treatment section provided between the base and the wastewater storage tank; The wastewater recycling and treatment unit includes a water pump fixedly connected to the outer wall of the top of the base. Both ends of the water pump are threadedly connected to a water pumping pipe and a water delivery pipe, respectively. A purification filter plate containing activated carbon is fixedly connected inside the water pumping pipe for purifying some harmful substances in the wastewater. A perforated brush plate is provided below the purification filter plate to clean its filter holes. A rotating negative pressure structure is provided between the water pumping pipe and the wastewater storage tank, which can be used to drive the perforated brush plate and the purification filter plate into direct contact.

[0005] Preferably, the wastewater recycling and treatment unit further includes sliders fixedly connected to the outer walls of both ends of the hollow brush plate. The outer wall of the hollow brush plate is fitted and connected to the inner wall of the pumping pipe, and the top of the pumping pipe is fixedly connected to the bottom of the wastewater storage tank. Vertical arc grooves are provided on the inner walls of both ends of the pumping pipe, which can be fitted and slidably connected to the two sliders respectively.

[0006] Preferably, the rotating negative pressure structure includes an electric cylinder fixedly connected to the outer wall of the bottom end of the wastewater storage tank. An extension rod is fixedly connected to the rotating shaft of the electric cylinder, and a rotating cylinder is fixedly connected to the bottom end of the extension rod. A conical block is fixedly connected obliquely to the bottom side wall of the rotating cylinder, and a disc is fixedly connected to the bottom end of the conical block.

[0007] Preferably, a ball-and-spindle conical plate is movably connected to the bottom plate of the disc, and an L-shaped bracket is fixedly connected to the bottom plate of the ball-and-spindle conical plate. The top plate of the L-shaped bracket is fixedly connected to the bottom outer wall of the wastewater storage tank, and conical blocks are attached to both sides of the top plate of the disc.

[0008] Preferably, each of the two conical blocks is fixedly connected with a sleeve rod, and each of the two sleeve rods is fixedly connected with an L-shaped elastic telescopic rod. The top of each of the two L-shaped elastic telescopic rods is fixedly connected to the bottom outer wall of the wastewater storage tank. A bending collar is fixedly connected to the body of one of the L-shaped elastic telescopic rods, and the collar portion of the bending collar is slidably connected to the outer wall of the pumping pipe.

[0009] Preferably, the collar portion of the bent collar is a magnetic plate, and both sliders are magnetic blocks that can be magnetically connected to it. A corrugated pipe is fixedly connected to the outer wall of the top of one of the conical blocks. The top of the corrugated pipe is fixedly connected to the bottom outer wall of the wastewater storage tank. An air extraction pipe and an air delivery pipe are fixedly connected through the two sides of the corrugated pipe near the top.

[0010] Preferably, both the extraction pipe and the gas delivery pipe are fixedly connected with one-way valves for controlling the unidirectional flow of gas. A U-shaped gas pipe is fixedly connected through the other end of the extraction pipe. The other end of the U-shaped gas pipe is fixedly connected through the top of the wastewater storage tank. The U-shaped gas pipe is specifically composed of pipes of different diameters, and a heating structure is provided in the middle large-diameter pipe.

[0011] Preferably, the heating structure includes multiple sets of staggered heating tubes, one end of each set of heating tubes is fixedly fitted with a ball shaft, each ball shaft is movably connected to the inner wall of the large-diameter tube of the U-shaped air pipe, and multiple sets of staggered arched frame plates are also fixedly connected to the inner wall of the large-diameter tube of the U-shaped air pipe.

[0012] Preferably, a spring is fixedly connected between each of the arched frame plates and the top tube of each of the heating tubes.

[0013] Preferably, the other end of the gas supply pipe and the other end of the water pump pipe are connected in a continuous manner, and an inclined arc plate is fixedly connected to the inner wall of the water pump pipe located above the gas supply pipe.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention uses activated carbon filter plates to adsorb organic pollutants (such as lignin, pigments, and resin acids) through their porous structure, significantly reducing wastewater color and COD. A rotating negative pressure structure drives a perforated brush plate to rotate automatically, cleaning clogged filter holes, avoiding manual maintenance, and extending the filter plate's lifespan. A corrugated pipe draws in residual heat from the top of the wastewater tank, which is then heated by the heating element in a U-shaped air pipe and transferred to the wastewater through an air delivery pipe, improving treatment efficiency. The inclined arc plate design prevents wastewater from impacting the air supply pipe and ensures uniform heat mixing. The electric cylinder links the conical block, sleeve rod, and other components to achieve automatic control of brush plate rotation and filter cleaning, reducing energy consumption. The sliding connection between the magnetic slider and the bending collar ensures structural stability and precise operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall planar structure of the present invention; Figure 3 This is a schematic diagram of the overall structure of the purification filter plate of the present invention; Figure 4 For the present invention Figure 3 A magnified view of the structure at point A in the middle; Figure 5 This is a schematic diagram of the cross-sectional structure of the water pumping pipe of the present invention; Figure 6 This is a schematic diagram of the overall cross-sectional structure of the rotating drum of the present invention; Figure 7 This is a schematic diagram of a partial cross-sectional structure of the U-shaped trachea of ​​the present invention; Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure at point B in the middle.

[0016] In the picture: 1. Wastewater storage tank; 101. Tank cover; 102. Base; 2. Wastewater Recycling and Treatment Department; 201. Water Pump; 202. Pumping Pipe; 203. Water Delivery Pipe; 204. Purification Filter Plate; 205. Hollowed-out Brush Plate; 206. Slider; 207. Vertical Arc Inclined Groove; 208. Electric Cylinder; 209. Rotary Drum; 210. Conical Inclined Block; 211. Disc; 212. Ball Shaft Conical Plate; 213. L-shaped Support; 214. Conical Block; 215. Sleeve Rod; 216. L-shaped Elastic Telescopic Rod; 217. Bending Collar; 218. Corrugated Pipe; 219. Air Extraction Pipe; 220. Air Delivery Pipe; 221. One-way Valve; 222. U-shaped Air Pipe; 223. Heating Element; 224. Arched Frame Plate; 225. Spring; 226. Inclined Arc Plate. Detailed Implementation

[0017] 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.

[0018] like Figures 1 to 3 As shown, the present invention provides an ammonium sulfate wastewater treatment device for lithium battery recycling, including a wastewater storage tank 1, a tank cover 101 tightly snapped into the inner wall of the top of the wastewater storage tank 1, a base 102 fixedly connected to the outer wall of the bottom of the wastewater storage tank 1, and a wastewater recycling treatment unit 2 provided between the base 102 and the wastewater storage tank 1. The wastewater recycling and treatment unit 2 includes a water pump 201 fixedly connected to the outer wall of the top of the base 102. Both ends of the water pump 201 are respectively connected to a pumping pipe 202 and a water delivery pipe 203. A purification filter plate 204 containing activated carbon is fixedly connected inside the pumping pipe 202 for purifying some harmful substances in the wastewater. A perforated brush plate 205 is provided below the purification filter plate 204 to clean its filter holes. A rotating negative pressure structure is provided between the pumping pipe 202 and the wastewater storage tank 1, which can be used to drive the perforated brush plate 205 and the purification filter plate 204 to make direct contact. The wastewater recycling and treatment unit 2 also includes sliders 206 fixedly connected to the outer walls of both ends of the hollow brush plate 205. The outer wall of the hollow brush plate 205 is fitted and connected to the inner wall of the pumping pipe 202. The top of the pumping pipe 202 is fixedly connected to the bottom of the wastewater storage tank 1. Vertical arc grooves 207 are provided on the inner walls of both ends of the pumping pipe 202, which can be fitted and slidably connected to the two sliders 206 respectively.

[0019] The above scheme is adopted as follows: the ammonium sulfate wastewater in the wastewater storage tank 1 is pumped by the operation of the water pump 201 and enters the water pumping pipe 202. Then, the wastewater is introduced back into the wastewater storage tank 1 through the water conveying pipe 203 for circulating pretreatment. The wastewater entering the water pumping pipe 202 will flow directly down through the purification filter plate 204. The activated carbon particles installed in the purification filter plate 204 can effectively adsorb organic pollutants in the wastewater, such as lignin, pigments, resin acids and other chemical substances, through their well-developed pore structure and huge specific surface area. This has a significant effect on removing organic matter that causes high color and high chemical oxygen demand (COD) in wastewater.

[0020] The rotating negative pressure structure includes an electric cylinder 208 fixedly connected to the outer wall of the bottom end of the wastewater storage tank 1. An extension rod is fixedly connected to the rotating shaft of the electric cylinder 208, and a rotating cylinder 209 is fixedly connected to the bottom end of the extension rod. A conical inclined block 210 is obliquely fixedly connected to the bottom side wall of the rotating cylinder 209. A disc 211 is fixedly connected to the bottom end of the conical inclined block 210. A ball-shaft conical plate 212 is movably connected to the bottom end of the disc 211. An L-shaped bracket 213 is fixedly connected to the bottom end of the ball-shaft conical plate 212. The top end of the L-shaped bracket 213 is fixedly connected to the outer wall of the bottom end of the wastewater storage tank 1. The top end of the disc 211... Both sides of the disc are fitted with conical blocks 214, and each conical block 214 is fixedly connected with a sleeve rod 215. Each sleeve rod 215 is fixedly connected with an L-shaped elastic telescopic rod 216. The top of each L-shaped elastic telescopic rod 216 is fixedly connected to the bottom outer wall of the wastewater storage tank 1. A bent collar 217 is fixedly connected to the body of one L-shaped elastic telescopic rod 216. The collar part of the bent collar 217 is fitted and slidably connected to the outer wall of the pumping pipe 202. The collar part of the bent collar 217 is a magnetic plate, and both sliders 206 are magnetic blocks that can be magnetically connected to it.

[0021] The above solution is adopted: such as Figure 6 As shown, the extension rod is rotated by starting the electric cylinder 208. The rotating extension rod will inevitably drive the rotating drum 209 to rotate, thereby causing the inclined conical block 210 and the disc 211 to rotate synchronously. This allows the disc 211 to tilt and swing on the ball-shaft conical plate 212 at a specific angle. The rotating disc 211 will repeatedly drive the two conical blocks 214 to move up and down sequentially. When one of the sleeve rods 215 moves due to the movement of the conical block 214, it will directly drive the L-shaped elastic telescopic rod 216, which is equipped with a bent collar 217, to extend and retract. Figure 3 and Figure 4 As shown, the bending collar 217, which passively slides up and down on the outer wall of the water pipe 202, directly drives the two sliders 206 installed on the hollow brush plate 205 to move. After the two sliders 206 move upward in the corresponding two vertical arc grooves 207, their movement path will change during the passive upward movement of the two sliders 206 according to the oblique groove diameter at the top. This will drive the hollow brush plate 205 to rotate. At that time, the passive upward movement will pass through a part of the purification filter plate 204, and after the filter holes are processed, the passive angle rotation can perform a large-area horizontal sweeping rotation of the purification filter plate 204, increasing the through hole area and ensuring the normal filtration of the purification filter plate 204.

[0022] A corrugated pipe 218 is fixedly connected to the outer wall of the top of a conical block 214. The top of the corrugated pipe 218 is fixedly connected to the bottom outer wall of the wastewater storage tank 1. A suction pipe 219 and a gas supply pipe 220 are fixedly connected through the two sides of the corrugated pipe 218 near the top. A one-way valve 221 for controlling the one-way flow of gas is fixedly connected to the pipes of the suction pipe 219 and the gas supply pipe 220. A U-shaped gas pipe 222 is fixedly connected through the other end of the suction pipe 219. The other end of the U-shaped gas pipe 222 is fixedly connected through the top of the wastewater storage tank 1. The U-shaped gas pipe 222 is specifically composed of pipes of different diameters, and a heating structure is provided in the middle large-diameter pipe. The heating structure includes multiple sets of staggered heating tubes 223. Each set of heating tubes 223 has a ball bearing fixedly installed at one end. Each ball bearing is movably connected to the inner wall of the large-diameter tube of the U-shaped air pipe 222. Multiple sets of staggered arched frame plates 224 are also fixedly connected to the inner wall of the large-diameter tube of the U-shaped air pipe 222. A spring 225 is fixedly connected between each arched frame plate 224 and the top tube of each heating tube 223. The other end of the air supply pipe 220 is fixedly connected to one end of the water pumping pipe 202. An inclined arc plate 226 is fixedly connected to the inner wall of the water pumping pipe 202 located above the air supply pipe 220.

[0023] The above solution is adopted: such as Figure 6 As shown, during the passive up-and-down movement of the other conical block 214, it directly drives the bellows 218 and L-shaped elastic telescopic rod 216 installed at the top to extend and retract, generating suction and squeezing negative pressure in its inner cavity. Thus, under the fluctuation of the disc 211, the L-shaped elastic telescopic rod 216 will autonomously drive the bellows 218, which is not under force, to return to its original position. When the bellows 218 moves downwards and the tube body extends, the suction force generated is as follows... Figure 5 As shown, the heat collected at the top of the wastewater storage tank 1 during operation is drawn through the extraction pipe 219 equipped with a one-way valve 221. This heated gas will exert a pressure effect on each of the multiple heating pipes 223 as it passes through them, causing the pipe to tilt. Figure 7 and Figure 8As shown, the pressure-adjusted heating tube 223 pulls the spring 225 installed on the arched frame plate 224, causing it to deform. The installation of the spring 225 is mainly to allow the heating tube 223 to be subjected to different pressures, resulting in different tilt angles. It also facilitates the automatic reset of the heating tube 223 when no force is applied. The staggered tilting heating tubes 223 divert the gas path, causing the gas to form a "baffle" between the tubes, avoiding the "local airflow short circuit" (some gas flows directly without being fully heated) that may occur in the horizontal state. This reduces the temperature difference of the entire waste gas flow, and the collected residual heat is used for secondary heating, preventing the gas from losing temperature during the gas guiding process. When the corrugated pipe 218 is compressed under force, the heated gas can be introduced into the water pumping pipe 202 through the gas delivery pipe 220 to mix with the filtered wastewater, recovering useful resources for reuse and accelerating the wastewater treatment efficiency. The installation of the inclined arc plate 226 can block the downstream wastewater, preventing the water from directly impacting the gas delivery pipe 220.

[0024] One point that needs to be added is that the purification filter plate 204 can be replaced by disassembling the water pump 202 and the water pump 201. When the wastewater storage tank 1 is in use, the high temperature generated inside the tank is used to heat the wastewater. All of these are existing technologies.

[0025] The working principle and usage process of this invention are as follows: The ammonium sulfate wastewater in the wastewater storage tank 1 is drawn into the pumping pipe 202 and then transported back into the fixed wastewater storage tank 1 via the water delivery pipe 203 for circulating pretreatment. The wastewater entering the pumping pipe 202 flows directly down through the purification filter plate 204. The electric cylinder 208 drives the extension rod to rotate, which in turn drives the rotating drum 209 to rotate. This causes the inclined conical block 210 and the disc 211 to rotate synchronously, resulting in the disc 211 tilting and rotating on the ball-shaft conical plate 212 at a specific angle. The rotating disc 211 repeatedly drives the two conical blocks 214 to move up and down sequentially. When one of the sleeve rods 215 is moved by the conical block 214, it will directly drive the L-shaped elastic telescopic rod 216 with the bent collar 217 to extend and retract. The bent collar 217, which passively slides up and down on the outer wall of the water pipe 202, will directly drive the two sliders 206 installed on the hollow brush plate 205 to move. After the two sliders 206 move upward in the corresponding two vertical arc grooves 207, their movement path will change during the passive upward movement of the two sliders 206 according to the oblique groove diameter at the top. This will drive the hollow brush plate 205 to rotate. At that time, it will passively move upward through a part of the purification filter plate 204, and after the filter holes are processed by the through hole treatment, the passive angle rotation can sweep and rotate the purification filter plate 204 over a large area, increasing the through hole area. During the passive up-and-down movement of the other conical block 214, it directly drives the bellows 218 and L-shaped elastic telescopic rod 216 installed at the top to extend and retract, generating negative pressure of suction and compression in its inner cavity. As a result, under the fluctuation of the disc 211, the L-shaped elastic telescopic rod 216 will autonomously drive the bellows 218 to return to its original position when it is not under force. When the bellows 218 moves down and the pipe body extends, the suction force generated will be released through the air extraction pipe 219 equipped with a one-way valve 221, which will remove some of the heat collected at the top of the wastewater storage tank 1 during operation. During the suction process, the heated gas will exert pressure on each of the multiple heating tubes 223 as it passes through them, causing the tube to tilt. The tilted heating tubes 223 will pull the springs 225 installed on the arched frame plate 224, causing them to deform. When the corrugated pipe 218 contracts under force, the heated gas can be introduced into the water pumping pipe 202 through the gas delivery pipe 220 to mix with the filtered wastewater. The installation of the inclined arc plate 226 can block the downstream wastewater and prevent the water from directly impacting the gas delivery pipe 220.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] 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 wastewater treatment device for ammonium sulfate used in lithium battery recycling, comprising a wastewater storage tank (1), characterized in that: The top inner wall of the wastewater storage tank (1) is tightly fitted with a tank cover (101), and a base (102) is fixedly connected to the bottom outer wall of the wastewater storage tank (1). A wastewater recycling and treatment unit (2) is provided between the base (102) and the wastewater storage tank (1). The wastewater recycling and treatment unit (2) includes a water pump (201) fixedly connected to the outer wall of the top of the base (102). Both ends of the water pump (201) are respectively connected to a pumping pipe (202) and a water delivery pipe (203). A purification filter plate (204) containing activated carbon is fixedly connected inside the pumping pipe (202) for purifying some harmful substances in the wastewater. A perforated brush plate (205) is provided below the purification filter plate (204) to clean its filter holes. A rotating negative pressure structure is provided between the pumping pipe (202) and the wastewater storage tank (1) to drive the perforated brush plate (205) and the purification filter plate (204) to make direct contact.

2. The ammonium sulfate wastewater treatment equipment for lithium battery recycling according to claim 1, characterized in that: The wastewater recycling and treatment unit (2) also includes sliders (206) fixedly connected to the outer walls of both ends of the hollow brush plate (205). The outer wall of the hollow brush plate (205) and the inner wall of the pumping pipe (202) are fitted together. The top pipe of the pumping pipe (202) and the bottom end of the wastewater storage tank (1) are connected through and fixed. Vertical arc grooves (207) are opened on the inner walls of both ends of the pumping pipe (202) so that they can be fitted and slidably connected to the two sliders (206) respectively.

3. The ammonium sulfate wastewater treatment equipment for lithium battery recycling according to claim 1, characterized in that: The rotating negative pressure structure includes an electric cylinder (208) fixedly connected to the bottom outer wall of the wastewater storage tank (1). An extension rod is fixedly connected to the rotating shaft of the electric cylinder (208), and a rotating cylinder (209) is fixedly connected to the bottom end of the extension rod. A conical inclined block (210) is fixedly connected to the bottom side wall of the rotating cylinder (209), and a disc (211) is fixedly connected to the bottom end of the conical inclined block (210).

4. The ammonium sulfate wastewater treatment equipment for lithium battery recycling according to claim 3, characterized in that: A ball-shaped conical plate (212) is movably connected to the bottom plate of the disc (211). An L-shaped bracket (213) is fixedly connected to the bottom plate of the ball-shaped conical plate (212). The top plate of the L-shaped bracket (213) is fixedly connected to the bottom outer wall of the wastewater storage tank (1). Conical blocks (214) are attached to both sides of the top plate of the disc (211).

5. The ammonium sulfate wastewater treatment equipment for lithium battery recycling according to claim 4, characterized in that: Each of the two conical blocks (214) is fixedly connected with a sleeve rod (215), and each of the two sleeve rods (215) is fixedly connected with an L-shaped elastic telescopic rod (216). The top of each of the two L-shaped elastic telescopic rods (216) is fixedly connected to the bottom outer wall of the wastewater storage tank (1). A bent collar (217) is fixedly connected to the body of one of the L-shaped elastic telescopic rods (216). The collar part of the bent collar (217) is in close sliding connection with the outer wall of the pumping pipe (202).

6. The ammonium sulfate wastewater treatment equipment for lithium battery recycling according to claim 5, characterized in that: The collar part of the bent collar (217) is a magnetic plate, and the two sliders (206) are magnetic blocks that can be magnetically connected to it. A corrugated pipe (218) is fixedly connected to the outer wall of the top of one of the conical blocks (214). The top pipe of the corrugated pipe (218) is fixedly connected to the bottom outer wall of the wastewater storage tank (1). A suction pipe (219) and a gas transmission pipe (220) are fixedly connected to both sides of the corrugated pipe (218) near the top.

7. The ammonium sulfate wastewater treatment equipment for lithium battery recycling according to claim 6, characterized in that: Both the extraction pipe (219) and the gas transmission pipe (220) are fixedly connected to a one-way valve (221) for controlling the one-way flow of gas. A U-shaped gas pipe (222) is fixedly connected through the other end of the extraction pipe (219). The other end of the U-shaped gas pipe (222) is fixedly connected through the top of the wastewater storage tank (1). The U-shaped gas pipe (222) is specifically composed of pipes of different diameters, and a heating structure is provided in the middle large-diameter pipe.

8. The ammonium sulfate wastewater treatment equipment for lithium battery recycling according to claim 7, characterized in that: The heating structure includes multiple sets of staggered heating tubes (223), one end of each set of heating tubes (223) is fixedly fitted with a ball shaft, and each ball shaft is movably connected to the inner wall of the large diameter tube of the U-shaped air tube (222). Multiple sets of staggered arched frame plates (224) are also fixedly connected to the inner wall of the large diameter tube of the U-shaped air tube (222).

9. The ammonium sulfate wastewater treatment equipment for lithium battery recycling according to claim 8, characterized in that: A spring (225) is jointly and fixedly connected between the top tube of each of the arched brackets (224) and the top tube of each of the heating tubes (223).

10. The ammonium sulfate wastewater treatment equipment for lithium battery recycling according to claim 7, characterized in that: The other end of the gas supply pipe (220) and the other end of the water pumping pipe (202) are connected in a continuous and fixed manner. An inclined arc plate (226) is fixedly connected in the inner wall of the water pumping pipe (202) located above the gas supply pipe (220).

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