A lithium battery wastewater treatment device

Abstract

This utility model discloses a lithium battery wastewater treatment device, including a treatment tank. A tank cover is installed on the top of the treatment tank, and a motor is installed on the top of the tank cover. The output end of the motor is fixedly connected to a rotating shaft, and the other end of the rotating shaft extends into the interior of the treatment tank and is fixedly connected to multiple sets of stirring blades. In this utility model, the motor, rotating shaft, and stirring blades form a stirring structure. The rotation of the inclined blades enhances the water flow disturbance, enabling the reagent and wastewater to mix and react quickly. A semi-gear disc, a bidirectional toothed plate, a push rod, a sealing plate, and a pressure box form a pressure-collecting mechanism. This mechanism, together with an air inlet pipe, an air outlet pipe, and a filter assembly, achieves air purification and directional delivery. Aeration is then completed through an aeration pipe, replenishing dissolved oxygen to the water body and enhancing disturbance. Furthermore, the stirring blades and the aeration system share the same power source, which can greatly reduce energy consumption. Thus, this device can achieve efficient purification treatment of lithium battery wastewater through the synergistic effect of various structures.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery wastewater treatment technology, specifically to a lithium battery wastewater treatment device. Background Technology

[0002] The production process of lithium batteries generates wastewater containing various pollutants, including large amounts of heavy metal ions (such as lithium, cobalt, nickel, and manganese) and other impurities. Treatment of this wastewater typically involves adding chemicals to remove these pollutants; sodium carbonate is a commonly used chemical that reacts with heavy metal ions in the wastewater to form precipitates.

[0003] However, existing lithium battery wastewater treatment equipment has shortcomings in the mixing process of reagents and wastewater. Most traditional treatment equipment only uses a stirring device to mix wastewater and reagents. Due to the complex composition and relatively high viscosity of lithium battery wastewater, stirring alone is often insufficient to ensure that the reagents and wastewater are fully mixed, resulting in incomplete reaction, affecting the treatment effect, and also wasting reagents. Therefore, we propose a lithium battery wastewater treatment equipment that can effectively improve the mixing efficiency of reagents and wastewater and can filter the aeration air. Utility Model Content

[0004] The purpose of this invention is to provide a lithium battery wastewater treatment device to solve the problems existing in the operation of the existing device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lithium battery wastewater treatment device, comprising a treatment tank, a tank cover installed on the top of the treatment tank, a motor installed on the top of the tank cover, a rotating shaft fixedly connected to the output end of the motor, the other end of the rotating shaft extending into the interior of the treatment tank and fixedly connected to multiple sets of stirring blades, a reagent addition port fixedly connected to one side of the top of the tank cover, a wastewater inlet and a sewage outlet fixedly connected to the upper and lower ends of one side of the treatment tank respectively, an aeration pipe fixedly connected to the other side of the treatment tank, and a pressure-drawing mechanism provided on the top of the tank cover;

[0006] The pressure-drawing mechanism includes a pressure-drawing box mounted on the top of the box cover and a half-gear disc mounted on the outer surface of the rotating shaft. A bidirectional toothed plate is meshed with the outer surface of the half-gear disc. A push rod is fixedly connected to one side of the bidirectional toothed plate. The other end of the push rod extends into the interior of the pressure-drawing box and is fixedly connected to a sealing plate. An air inlet pipe and an air outlet pipe are fixedly connected to the side of the pressure-drawing box away from the push rod. A filter assembly is fixedly connected to the other end of the air inlet pipe, and an aeration pipe is fixedly connected to the other end of the air outlet pipe.

[0007] Furthermore, the filter assembly includes a sealing cap fixedly connected to the air intake pipe, a filter cylinder is threadedly connected to the bottom of the sealing cap, a guide plate is fixedly connected to the bottom of the inner cavity of the filter cylinder, and a filter plate is fixedly connected to the top of the guide plate.

[0008] Furthermore, one-way valves are fixedly connected to the outer surfaces of both the air inlet pipe and the air outlet pipe.

[0009] Furthermore, the stirring blades are inclined, and the surface of the stirring blades is coated with polytetrafluoroethylene coating.

[0010] Furthermore, an inclined plate is fixedly connected to the bottom of the inner cavity of the processing box.

[0011] Furthermore, support legs are fixedly connected to the four bottom corners of the processing box.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, the motor, rotating shaft, and stirring blades form a stirring structure. The rotation of the inclined blades enhances the water flow disturbance, enabling the reagent and wastewater to mix and react rapidly. The semi-gear disc, bidirectional toothed plate, push rod, sealing plate, and pressure box form a pressure-collecting mechanism, which, together with the air inlet pipe, air outlet pipe, and filter assembly, achieves air purification and directional delivery. The air is then aerated through the aeration pipe, replenishing dissolved oxygen to the water body and enhancing the disturbance. Furthermore, the stirring blades and the aeration system share the same power source, which can greatly reduce energy consumption. Thus, this device can achieve highly efficient purification treatment of lithium battery wastewater through the synergistic effect of its various structures. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0015] Figure 2 This is a cross-sectional view of the overall interior of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the connection between the half-gear disk and the bidirectional gear plate in this utility model;

[0017] Figure 4 This is a cross-sectional view of the interior of the pressure box in this utility model;

[0018] Figure 5 This is a schematic diagram of the internal structure of the filter cylinder in this utility model.

[0019] In the diagram: 1. Treatment box; 2. Box cover; 3. Motor; 4. Rotating shaft; 5. Stirring blades; 6. Chemical addition port; 7. Inclined plate; 8. Wastewater inlet; 9. Sewage outlet; 10. Air outlet pipe; 11. Air inlet pipe; 12. Aeration pipe; 13. Filter cylinder; 14. Guide plate; 15. Filter plate; 16. Sealing cover; 17. Pressure box; 18. Half-gear disc; 19. Double-sided gear plate; 20. Push rod; 21. Sealing plate; 22. Support leg. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figure 1-5 This utility model provides a technical solution: a lithium battery wastewater treatment device, including a treatment tank 1, a tank cover 2 installed on the top of the treatment tank 1, a motor 3 installed on the top of the tank cover 2, a rotating shaft 4 fixedly connected to the output end of the motor 3, the other end of the rotating shaft 4 extending into the interior of the treatment tank 1 and fixedly connected to multiple sets of stirring blades 5, a reagent addition port 6 fixedly connected to one side of the top of the tank cover 2, a wastewater inlet 8 and a sewage outlet 9 fixedly connected to the upper and lower ends of one side of the treatment tank 1 respectively, an aeration pipe 12 fixedly connected to the other side of the treatment tank 1, and a pressure-drawing mechanism provided on the top of the tank cover 2;

[0022] The treatment tank 1 and the cover 2 are made of 304 or 316 stainless steel, which has excellent corrosion resistance and can resist the long-term corrosion of heavy metal ions such as cobalt, nickel, and lithium in wastewater, as well as acidic / alkaline agents. The cover 2 is connected to the treatment tank 1 by a sealing ring to ensure airtightness during operation. The inclined plate 7 fixed at the bottom of the inner cavity of the treatment tank 1 is tilted at 15°-30°, which can guide the settling flocculent precipitate to the discharge port 9 by gravity, thus accelerating the solid-liquid separation efficiency. In the stirring system, the motor 3 is an explosion-proof asynchronous motor, which is suitable for the corrosive gas environment that may exist in the wastewater treatment area. The output power is determined according to the capacity of the treatment tank 1. The rated capacity is typically 0.75-2.2kW. The rotating shaft 4 is made of 45# steel with chrome plating or stainless steel, which combines high strength and corrosion resistance, ensuring stability during long-term high-speed rotation at 100-300r / min. The stirring blades 5 are made of stainless steel with a PTFE coating. This coating is resistant to acid and alkali corrosion (pH 1-14) and has a non-stick surface that reduces sediment adhesion and cleaning frequency. The blades are tilted at 30°-45°, which generates axial thrust and radial circulation during rotation, enhancing water flow turbulence and increasing the mixing efficiency of chemicals and wastewater by more than 30%, thus shortening the reaction time.

[0023] Furthermore, the pressure-drawing mechanism includes a pressure-drawing box 17 mounted on the top of the box cover 2 and a half-gear disc 18 mounted on the outer surface of the rotating shaft 4. A bidirectional toothed plate 19 is meshed on the outer surface of the half-gear disc 18. A push rod 20 is fixedly connected to one side of the bidirectional toothed plate 19. The other end of the push rod 20 extends into the interior of the pressure-drawing box 17 and is fixedly connected to a sealing plate 21. An air inlet pipe 11 and an air outlet pipe 10 are fixedly connected to the side of the pressure-drawing box 17 away from the push rod 20. A filter assembly is fixedly connected to the other end of the air inlet pipe 11, and the other end of the air outlet pipe 10 is fixedly connected to an aeration pipe 12.

[0024] The gear parts of the half-gear disk 18 and the double-sided gear plate 19 are made of wear-resistant cast iron such as HT300, and the tooth surface is hardened to a hardness of HRC50-55. The double-sided gear plate 19 is made of 40Cr alloy structural steel to ensure the wear resistance and precision of the meshing transmission. The half-gear disk 18 has teeth on only half of its area. When it rotates with the rotating shaft 4, it can drive the double-sided gear plate 19 to perform a reciprocating linear motion with a stroke of 50-100mm. It cleverly converts rotational power into pumping power, eliminating the need for an additional motor, saving energy and featuring a compact structure. The sealing plate 21 is made of nitrile rubber wrapped around a steel plate to ensure airtightness with the smooth stainless steel inner wall of the pressure chamber 17. The volume of the pressure chamber 17 is designed according to the processing capacity. The reciprocating motion of the sealing plate 21 realizes the "inhalation-compression" cycle. Both the inlet pipe 11 and the outlet pipe 10 are equipped with one-way valves with polytetrafluoroethylene valve cores. The one-way valve of the inlet pipe 11 only allows air to flow from the filter assembly into the pressure chamber 17, and the one-way valve of the outlet pipe 10 only allows air to flow from the pressure chamber 17 to the aeration pipe 12, avoiding reverse airflow interference.

[0025] Furthermore, the filter assembly includes a sealing cap 16 fixedly connected to the air intake pipe 11, a filter cylinder 13 being threadedly connected to the bottom of the sealing cap 16, a guide plate 14 being fixedly connected to the bottom of the inner cavity of the filter cylinder 13, and a filter plate 15 being fixedly connected to the top of the guide plate 14.

[0026] The filter cartridge 13 is made of transparent PVC or stainless steel and is connected to the sealing cover 16 by threads for easy and quick disassembly and replacement of the filter element. The sealing cover 16 has a built-in rubber sealing ring to ensure air intake sealing. The guide plate 14 has a conical structure, which can evenly disperse the intake air to the surface of the filter plate 15. The filter plate 15 uses an activated carbon composite filter screen with an outer non-woven fabric layer to intercept dust and an inner activated carbon layer to adsorb odors and harmful gases, ensuring the cleanliness of the air entering the wastewater. The aeration pipe 12 of the auxiliary component is made of UPVC material, with φ2-3mm micropores evenly distributed on the pipe wall, which can disperse the air into tiny bubbles with a diameter of 0.5-2mm, increasing the contact area with the wastewater and improving dissolved oxygen efficiency.

[0027] Furthermore, support legs 22 are fixedly connected to the four corners of the bottom of the processing box 1.

[0028] Among them, the support leg 22 is made of carbon steel with anti-rust paint on the surface, and is 100-150mm high, which facilitates sewage discharge and maintenance operations at the bottom of the equipment 1.

[0029] Working Principle: In the wastewater treatment area of ​​the lithium battery production workshop, a large amount of production wastewater containing heavy metal ions, electrolyte residues, and organic pollutants is transported to the treatment system through pipelines. This lithium battery wastewater treatment equipment undertakes the core purification task. When the wastewater flows into the treatment tank 1 from the wastewater inlet 8, the equipment immediately starts the full-process treatment operation. First, the motor 3 drives the rotating shaft 4 to rotate, and the inclined stirring blades 5 rotate accordingly, fully stirring the wastewater entering the treatment tank 1. The operator adds targeted treatment agents through the agent addition port 6, such as heavy metal ions, electrolyte residues, and organic pollutants. Metal chelating agents or flocculants are used. The polytetrafluoroethylene coating on the surface of the stirring blades 5 prevents corrosion of the agents. At the same time, the inclined design enhances water flow disturbance, allowing the agents and wastewater to mix and react quickly, forming flocculent precipitates. During the stirring process, the rotating shaft 4 drives the half-gear disk 18 to rotate synchronously. Its meshing with the double-toothed plate 19 causes the double-toothed plate 19 to reciprocate linearly. This, in turn, pushes the sealing plate 21 back and forth within the pressure box 17 via the push rod 20. When the sealing plate 21 moves to the outside of the pressure box 17, outside air is purified by the filter assembly and then passes through the air inlet pipe. 11. Air enters the pressure chamber 17—air first enters the filter cartridge 13, is dispersed by the guide plate 14, passes through the filter plate 15 to remove dust and impurities, and then enters the air inlet pipe 11 through the sealing cover 16; when the sealing plate 21 moves inward, the air in the pressure chamber 17 is forced into the aeration pipe 12 through the air outlet pipe 10. The one-way valves on the air inlet pipe 11 and the air outlet pipe 10 ensure unidirectional airflow to avoid backflow. The aeration pipe 12 continuously supplies purified air to the wastewater, forming a large number of tiny bubbles. As the bubbles rise, they come into full contact with the wastewater, replenishing the dissolved oxygen in the water. The process involves deoxygenation, which promotes microbial activity to degrade organic pollutants. On the other hand, the bubble disturbance further enhances the mixing reaction between the reagent and the wastewater. As the reaction progresses, the precipitate gradually settles under gravity. The inclined plate 7 at the bottom of the treatment tank 1 guides the precipitate to gather at the discharge port 9. After treatment, the settled precipitate is periodically discharged through the discharge port 9. Throughout the process, the support leg 22 stabilizes the equipment, the inclined plate 7 accelerates solid-liquid separation, the filter component continuously purifies the air required for aeration, and the pumping mechanism and stirring system work together to achieve efficient purification treatment of lithium battery wastewater.

[0030] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A lithium battery wastewater treatment apparatus comprising a treatment tank (1), characterized in that: The top of the treatment tank (1) is equipped with a cover (2), and the top of the cover (2) is equipped with a motor (3). The output end of the motor (3) is fixedly connected to a rotating shaft (4). The other end of the rotating shaft (4) extends into the interior of the treatment tank (1) and is fixedly connected to multiple sets of stirring blades (5). A reagent addition port (6) is fixedly connected to one side of the top of the cover (2). A wastewater inlet (8) and a sewage outlet (9) are fixedly connected to the upper and lower ends of one side of the treatment tank (1), respectively. An aeration pipe (12) is fixedly connected to the other side of the treatment tank (1). A pressure-drawing mechanism is provided on the top of the cover (2). The pressure-drawing mechanism includes a pressure-drawing box (17) installed on the top of the box cover (2) and a half-gear disc (18) installed on the outer surface of the rotating shaft (4). The outer surface of the half-gear disc (18) is meshed with a bidirectional toothed plate (19). A push rod (20) is fixedly connected to one side of the bidirectional toothed plate (19). The other end of the push rod (20) extends into the interior of the pressure-drawing box (17) and is fixedly connected to a sealing plate (21). An air inlet pipe (11) and an air outlet pipe (10) are fixedly connected to the side of the pressure-drawing box (17) away from the push rod (20). A filter assembly is fixedly connected to the other end of the air inlet pipe (11), and the other end of the air outlet pipe (10) is fixedly connected to an aeration pipe (12).

2. The lithium battery wastewater treatment equipment according to claim 1, characterized in that: The filter assembly includes a sealing cap (16) fixedly connected to the air intake pipe (11), a filter cylinder (13) is threadedly connected to the bottom of the sealing cap (16), a guide plate (14) is fixedly connected to the bottom of the inner cavity of the filter cylinder (13), and a filter plate (15) is fixedly connected to the top of the guide plate (14).

3. The lithium battery wastewater treatment equipment according to claim 1, characterized in that: One-way valves are fixedly connected to the outer surfaces of the air inlet pipe (11) and the air outlet pipe (10).

4. The lithium battery wastewater treatment equipment according to claim 1, characterized in that: The stirring blade (5) is inclined, and the surface of the stirring blade (5) is coated with polytetrafluoroethylene coating.

5. The lithium battery wastewater treatment equipment according to claim 1, characterized in that: An inclined plate (7) is fixedly connected to the bottom of the inner cavity of the processing box (1).

6. The lithium battery wastewater treatment equipment according to claim 1, characterized in that: The bottom four corners of the processing box (1) are all fixedly connected with support legs (22).

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