A wastewater filtration device for lithium carbonate production

Abstract

This invention discloses a wastewater filtration device for lithium carbonate production, relating to the field of wastewater filtration technology. The device includes a main tank comprising a first tank, a second tank, and a third tank, connected by a pump and a delivery pipe. The pump between the first and second tanks has its input end connected to the bottom of the first tank and its output end connected to the top of the second tank. Similarly, the pump between the second and third tanks has its input end connected to the bottom of the second tank and its output end connected to the top of the third tank. This wastewater filtration device for lithium carbonate production, through a three-stage filtration system, removes impurities from the wastewater step by step, ultimately yielding highly clean wastewater that directly meets the high water quality requirements for lithium carbonate production. This continuous and progressively enhanced filtration method is more effective than a single filtration step in removing suspended solids, particulate matter, and other pollutants from the wastewater.

Description

Technical Field

[0001] This invention relates to the field of wastewater filtration technology, specifically to a wastewater filtration device for lithium carbonate production. Background Technology

[0002] Wastewater treatment is a crucial step in the production of lithium carbonate. As an important inorganic compound, lithium carbonate is widely used in battery manufacturing, ceramics industry and drug synthesis. The wastewater generated during its production often contains a large amount of suspended solids, particulate matter, heavy metal ions and other organic pollutants. Direct discharge will cause serious environmental pollution and will not meet the high water quality requirements for lithium carbonate production.

[0003] Currently, there are various wastewater filtration devices for lithium carbonate production on the market. Most of these devices use a single filtration step or a relatively simple filtration process to achieve preliminary treatment of wastewater. However, this treatment method has significant drawbacks: First, a single filtration step is often insufficient to effectively remove multiple pollutants in wastewater, especially for some small particles and dissolved pollutants, where the removal effect is even more limited. Second, due to the wide variety and varying amounts of impurities in wastewater, a single filtration step can easily lead to rapid clogging of the filter media, affecting filtration efficiency and effectiveness. Finally, because the wastewater treatment is incomplete, subsequent treatment equipment often has to bear a greater burden, which can easily cause equipment wear and blockage, shorten equipment lifespan, and increase maintenance costs. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a wastewater filtration device for lithium carbonate production, which solves the technical problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a wastewater filtration device for lithium carbonate production, comprising a main tank, a collection box provided on one side of the main tank, and a discharge channel for discharging waste provided at the front end of the main tank. The main tank includes a first tank, a second tank, and a third tank, which are connected by a pump and a conveying pipe. The input end of the pump between the first and second tanks is connected to the bottom of the first tank, and the output end is connected to the top of the second tank. The input end of the pump between the second and third tanks is connected to the bottom of the second tank, and the output end is connected to the top of the third tank.

[0006] The first, second, and third pools are each equipped with a conveyor belt and a cleaning assembly for cleaning the conveyor belt. The conveyor belt is located above the pump inlet.

[0007] As a further preferred embodiment of this technical solution, non-through vertical grooves and inclined grooves are respectively opened on both sides of the inner cavity of the first pool, and through sliding grooves, moving grooves and guide grooves are respectively opened on the upper end of the inner wall of the first pool, with the moving grooves and guide grooves connected.

[0008] As a further preferred embodiment of this technical solution, drive shafts are provided on both sides of the conveyor belt, and a first spline groove is provided at the end of the drive shaft. A conveyor roller that is connected to the conveyor belt is fixedly connected to the outer wall of the drive shaft. Collars that are slidably installed in the vertical groove and the inclined groove are provided at both ends of the drive shaft. A pull rope is provided at the top of the collar. A dual-shaft motor is provided at the top of the first pool body. A first winding roller and a second winding roller are respectively provided at both ends of the dual-shaft motor, and the diameter of the second winding roller is larger than the diameter of the first winding roller. One end of the pull rope on both sides passes through the first pool body and is connected to the first winding roller and the second winding roller respectively.

[0009] As a further preferred embodiment of this technical solution, the cleaning component includes a fixed rod located inside the first pool body, with positioning blocks fixedly connected to both sides of the fixed rod. A scraper is rotatably connected to the bottom end of the positioning block via a connecting rod. A limiting block is fixedly installed on the positioning block on one side of the connecting rod. A movable rod is rotatably connected to one side of the scraper surface. A pulley is slidably installed in the moving groove and guide groove at the other end of the movable rod.

[0010] As a further preferred embodiment of this technical solution, a servo motor is fixedly installed on one side of the outer wall of the first pool body. A drive rod is fixedly connected to the output end of the servo motor. The drive rod is rotatably installed inside the first pool body, and several striking parts for striking the conveyor belt are provided on the drive rod. A positioning shaft is rotatably connected to the side of the drive rod near the reciprocating screw. The positioning shaft and the drive rod are connected by transmission through the first synchronous belt pulley assembly.

[0011] As a further preferred embodiment of this technical solution, the two ends of the fixed rod are fixedly connected to movable blocks that are slidably installed in the slide groove, and the movable blocks are slidably connected to reciprocating screws that are fixedly installed in the slide groove, and the positioning shaft is connected to the reciprocating screws through a bevel gear set.

[0012] As a further preferred embodiment of this technical solution, a support base is fixedly installed on one side of the outer wall of the first pool body, and a cylinder is fixedly installed on the support base. A connecting rod is provided at the output end of the cylinder, and a spline rod is provided at the other end of the connecting rod. The specifications of the first spline groove are compatible with the specifications of the spline rod. A transmission rod is rotatably connected to one side of the support base, and the transmission rod is connected to the positioning shaft through a second synchronous belt pulley assembly. A through second spline groove is opened on the surface of the transmission rod, and the specifications of the second spline groove are compatible with the specifications of the spline rod.

[0013] As a further preferred embodiment of this technical solution, the striking component includes a fixed frame rotatably mounted on the drive rod, and the fixed frame is fixedly mounted on the inner wall of the first pool. A mounting shaft is rotatably connected to the fixed frame, and one end of the mounting shaft is connected to the drive rod via a third synchronous belt pulley assembly, while the other end is fixedly connected to a toggle rod. A ratchet and a sleeve are sleeved on the outer wall of the mounting shaft, and the ratchet is fixedly mounted on the fixed frame. A protrusion corresponding to the position of the toggle rod is fixedly connected to the outer side of the sleeve.

[0014] As a further preferred embodiment of this technical solution, a pawl adapted to a ratchet is provided on one side of the sleeve end via a torsion spring, and a push rod is provided on the other side. A striking rod is rotatably connected to the other end of the push rod. A U-shaped frame is fixedly connected to the bottom of the fixed frame, and the striking rod is slidably mounted on the U-shaped frame. A limiting plate is provided on the inner end of the U-shaped frame, and the limiting plate is fixedly mounted on the striking rod. A damping spring sleeved on the striking rod is provided between the limiting plate and the U-shaped frame.

[0015] Compared with existing technologies, it has the following advantages:

[0016] Through a three-stage filtration system, impurities in the wastewater are removed step by step, ultimately resulting in highly clean wastewater that directly meets the high-standard water quality requirements for lithium carbonate production. This continuous and progressively enhanced filtration method is more effective than a single filtration step in removing suspended solids, particulate matter, and other pollutants from wastewater. Multi-stage filtration reduces the burden on subsequent treatment equipment, minimizes wear and clogging caused by impurities in the wastewater, thereby extending the service life of the equipment and reducing maintenance costs.

[0017] Through the coordinated operation of a multi-stage transmission mechanism (including servo motors, synchronous pulley assemblies, spline rods, etc.), efficient conveyor belt movement and directional discharge of impurities are achieved. Simultaneously, the scraper design effectively removes impurities adhering to the conveyor belt, ensuring its continuous cleanliness and preventing impurity accumulation from affecting the production process. During movement, the scraper automatically rotates via a guide groove, shaking off scraped impurities remaining on its surface back onto the conveyor belt. The conveyor belt's movement then transports these impurities to the discharge channel. This self-cleaning mechanism not only reduces the frequency of manual cleaning but also improves cleaning efficiency, ensuring long-term cleanliness of the conveyor belt. The striking rod design provides a striking effect on the conveyor belt surface, effectively preventing small particles of impurities after filtration from adhering to the belt, further enhancing the cleaning effect. The striking action also helps loosen and remove stubborn impurities that are difficult to scrape off the conveyor belt.

[0018] The coordinated use of bevel gear sets, reciprocating screws, ratchet pawls, and other transmission and limiting components ensures the stable operation of the entire cleaning mechanism. The limiting function of the ratchet pawls prevents the reverse rotation of components such as the sleeve rod, thereby ensuring the accuracy and reliability of the mechanism. The clean conveyor belt reduces production failures and downtime caused by the accumulation of impurities, improves production efficiency, and at the same time reduces safety hazards caused by impurities, ensuring the safety and stability of the production process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the first pool body in this invention;

[0021] Figure 3 This is a schematic cross-sectional view of the structure of the first pool body in this invention;

[0022] Figure 4 This is a schematic diagram of the conveyor belt and cleaning assembly in this invention;

[0023] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0024] Figure 6 for Figure 4 Enlarged view of point B in the middle;

[0025] Figure 7 This is a structurally disassembled schematic diagram of the spline rod, transmission rod, and drive shaft in this invention;

[0026] Figure 8 This is a schematic diagram of the scraper structure in this invention;

[0027] Figure 9 This is a schematic diagram of the striking component in this invention.

[0028] In the diagram: 1. First pool; 2. Second pool; 3. Third pool; 4. Collection box; 5. Discharge channel; 6. Pump body; 7. Conveying pipe; 8. Conveyor belt; 9. Cleaning assembly; 11. Vertical trough; 12. Inclined trough; 13. Slide chute; 14. Moving trough; 15. Guide trough; 81. Drive shaft; 82. Conveying roller; 83. First spline groove; 84. Collar; 85. Pull rope; 86. Dual-shaft motor; 87. First take-up roller; 88. Second take-up roller; 91. Fixed rod; 92. Moving block; 93. Reciprocating screw; 94. Positioning block; 95. Connecting rod; 96. Scraper; 97. Limiting block; 98. Movable rod; 99. Pulley ; 910, Servo motor; 911, Drive rod; 912, First synchronous pulley assembly; 913, Positioning shaft; 914, Bevel gear set; 915, Support base; 916, Transmission rod; 917, Second synchronous pulley assembly; 918, Second spline groove; 919, Cylinder; 920, Connecting rod; 921, Spline rod; 922, Fixing frame; 923, Mounting shaft; 924, Third synchronous pulley assembly; 925, Actuating rod; 926, Ratchet; 927, Sleeve rod; 928, Protruding rod; 929, Push rod; 930, Striking rod; 931, U-shaped frame; 932, Limiting plate; 933, Damping spring; 934, Pawl. Detailed Implementation

[0029] The technical solutions in the embodiments of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] Example 1: Combining Figures 1-9 As shown, the present invention provides a technical solution: a wastewater filtration device for lithium carbonate production. This design includes a main pool and a collection box 4 is provided on one side of the main pool to facilitate the collection and storage of waste generated during the process. At the front end of the main pool, a discharge channel 5 for discharging waste is designed, which greatly improves the waste treatment efficiency and ensures the cleanliness of the working area.

[0031] The main tank consists of three parts: the first tank 1, the second tank 2, and the third tank 3. These three tanks are interconnected by a pump 6 and a conveying pipe 7, forming a highly efficient waste liquid conveying system. Specifically, the pump 6 between the first tank 1 and the second tank 2 has its input end connected to the bottom of the first tank 1 and its output end connected to the top of the second tank 2. Similarly, the pump 6 between the second tank 2 and the third tank 3 has its input end connected to the bottom of the second tank 2 and its output end connected to the top of the third tank 3. This design allows the waste liquid to flow smoothly between the three tanks and undergo multiple filtrations.

[0032] Conveyor belts 8 are installed inside the first pool 1, the second pool 2 and the third pool 3. Each pool is equipped with a cleaning component 9 for cleaning the conveyor belt 8. These cleaning components 9 can effectively remove the residue on the conveyor belt 8, thereby ensuring the cleanliness of the conveyor belt and avoiding affecting the subsequent filtration effect of waste liquid.

[0033] In addition, the conveyor belt 8 is located above the input end of the pump body 6. This layout is conducive to the smooth flow of waste liquid when entering the pump body 6, and also facilitates the pump body 6 to extract impurities. Overall, this design is both reasonable and efficient, greatly improving the operating efficiency of the entire system.

[0034] In an embodiment of the present invention, a series of filter holes are carefully designed on the surface of the conveyor belt 8. These filter holes play a crucial role in effectively filtering the wastewater used in the lithium carbonate production process. These filter holes not only ensure the cleanliness of the wastewater but also provide necessary protection for the production process. It is worth noting that the size of these filter holes is not constant but varies with their location. Specifically, these filter holes are located on the surface of the conveyor belt 8 in the first pool 1, the second pool 2, and the third pool 3, and their size decreases sequentially. This design cleverly achieves the purpose of multi-stage filtration of wastewater in the main pool, greatly enhancing the filtration effect and ensuring the quality of wastewater treatment.

[0035] In the specific operation process, firstly, the wastewater used for lithium carbonate production is put into the first pool 1. Here, the wastewater undergoes a first filtration treatment using the conveyor belt 8 in the first pool 1, and the filtered wastewater becomes clearer. Next, it is transported to the second pool 2 in conjunction with the pump 6 and conveyor pipe 7 on the first pool 1. In the second pool 2, the wastewater undergoes a second filtration through the conveyor belt 8, further removing impurities. After this series of treatments, the wastewater becomes even cleaner. Subsequently, it is transported to the third pool 3 again in conjunction with the pump 6 and conveyor pipe 7 on the second pool 2. In the third pool 3, the wastewater undergoes a third filtration through the conveyor belt 8. After this round of filtration, the wastewater has reached an extremely high level of cleanliness, fully meeting the requirements for lithium carbonate production.

[0036] Example 2: Combination Figure 3 , Figure 4 , Figure 5 As shown, based on Embodiment 1, non-through vertical grooves 11 and inclined grooves 12 are carefully designed on both sides of the inner cavity of the first pool body 1, which provides convenience for subsequent operations. Meanwhile, through sliding grooves 13, moving grooves 14 and guide grooves 15 are cleverly opened at the upper end of the inner wall of the first pool body 1.

[0037] On both sides of the conveyor belt 8, there are drive shafts 81. The ends of these drive shafts 81 are provided with first spline grooves 83. Through these spline grooves 83, the drive shafts 81 can effectively transmit power and drive the conveyor belt 8 to move. The outer wall of the drive shaft 81 is fixedly connected to a conveyor roller 82 that is connected to the conveyor belt 8 for transmission.

[0038] At both ends of the drive shaft 81, there are collars 84 that are slidably installed in the vertical groove 11 and the inclined groove 12. The design of these collars 84 enables the material to maintain a stable position during the conveying process, avoiding material damage caused by shaking. The top of the collars 84 is provided with pull ropes 85, which play a role in fixing and adjusting, ensuring the stability of the conveyor belt 8 during operation.

[0039] A dual-axis motor 86 is provided at the top of the first pool body 1. A first take-up roller 87 and a second take-up roller 88 are respectively provided at both ends of the dual-axis motor 86. The diameter of the second take-up roller 88 is larger than the diameter of the first take-up roller 87. One end of the pull rope 85 on both sides passes through the first pool body 1 and is connected to the first take-up roller 87 and the second take-up roller 88 respectively.

[0040] In an embodiment of the present invention, when it is necessary to filter and remove impurities from the surface of the conveyor belt 8, the operator can start the dual-axis motor 86 to drive the first take-up roller 87 and the second take-up roller 88 to rotate. This operation will cause the first take-up roller 87 and the second take-up roller 88 to wind the pull rope 85. In this way, the pull rope 85 can work together with the collar 84, the drive shaft 81 and the conveyor roller 82 to move the conveyor belt 8 upward to the position of the discharge channel 5. During this process, the end of the drive shaft 81 will slide together with the collar 84 in the vertical groove 11 and the inclined groove 12. At the same time, during the upward movement of the conveyor belt 8, since the diameter of the second take-up roller 88 is larger than the diameter of the first take-up roller 87, the conveyor belt 8 will gradually tilt towards the discharge channel 5 during the movement. Afterward, the surface of the conveyor belt 8 can be cleaned using the cleaning component 9 to remove impurities generated during the filtration process.

[0041] Example 3: Combination Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, based on Embodiment 2, the cleaning component 9 mainly includes a fixed rod 91 located inside the first pool body 1. Positioning blocks 94 are fixedly connected to both sides of the fixed rod, serving as important components for support and positioning. The bottom end of the positioning block 94 is rotatably connected to a scraper 96 via a connecting rod 95. The scraper 96 is designed to effectively scrape away residual substances during the cleaning process. A limiting block 97 is fixedly installed on the positioning block 94 on one side of the connecting rod 95. Its function is to limit the movement range of the scraper 96, ensuring the safety and effectiveness of the operation. A movable rod 98 is rotatably connected to one side of the surface of the scraper 96. The other end of the movable rod 98 is provided with a pulley 99 that is slidably installed in the moving groove 14 and the guide groove 15. The presence of these pulleys 99 allows the movable rod 98 to move smoothly in the groove.

[0042] A servo motor 910 is fixedly installed on one side of the outer wall of the first pool body 1 as the power source of the entire assembly. The output end of the servo motor 910 is fixedly connected to a drive rod 911. The drive rod 911 is rotatably installed inside the first pool body 1 and is provided with several striking parts that strike the conveyor belt 8. These striking parts are designed to effectively clean and maintain the conveyor belt 8. A positioning shaft 913 is rotatably connected to the drive rod 911 near the reciprocating screw 93. The positioning shaft 913 and the drive rod 911 are connected by transmission through the first synchronous belt pulley assembly 912 to ensure the accuracy and stability of the transmission.

[0043] The fixed rod 91 has two fixed connections to movable blocks 92 that are slidably installed in the slide groove 13. The movable blocks 92 are slidably connected to reciprocating screws 93 that are fixedly installed in the slide groove 13. This is to enable the scraper 96 to move up and down to achieve a better cleaning effect. The positioning shaft 913 is connected to the reciprocating screw 93 through a bevel gear set 914, which further ensures the accuracy of movement.

[0044] A support base 915 is fixedly installed on one side of the outer wall of the first pool body 1. A cylinder 919 is fixedly installed on the support base 915. A connecting rod 920 is provided at the output end of the cylinder 919. A spline rod 921 is provided at the other end of the connecting rod 920. The specifications of the first spline groove 83 are compatible with the specifications of the spline rod 921. This is to achieve precise control and operation of the component. A transmission rod 916 is rotatably connected to one side of the support base 915. The transmission rod 916 is connected to the positioning shaft 913 through the second synchronous belt pulley assembly 917. A through second spline groove 918 is opened on the surface of the transmission rod 916. The specifications of the second spline groove 918 are compatible with the specifications of the spline rod 921, ensuring the coordinated operation of the entire component.

[0045] The striking component includes a fixed frame 922 rotatably mounted on a drive rod 911. The fixed frame 922 is fixedly mounted on the inner wall of the first pool body 1, and a mounting shaft 923 is rotatably connected to it. One end of the mounting shaft 923 is connected to the drive rod 911 via a third synchronous belt pulley assembly 924, and the other end is fixedly connected to a toggle rod 925. A ratchet 926 and a sleeve 927 are sleeved on the outer wall of the mounting shaft 923. The ratchet 926 is fixedly mounted on the fixed frame 922, and a protrusion 928 corresponding to the position of the toggle rod 925 is fixedly connected to the outer side of the sleeve 927.

[0046] One end of the lever 927 is equipped with a pawl 934 that matches the ratchet 926 via a torsion spring, and the other end is equipped with a push rod 929. Under the elastic force of the torsion spring, the pawl 934 is pushed to engage with the ratchet 926. The other end of the push rod 929 is rotatably connected to a striking rod 930. The bottom of the fixed frame 922 is fixedly connected to a U-shaped frame 931, and the striking rod 930 is slidably mounted on the U-shaped frame 931. A limiting plate 932 is provided on the inner end of the U-shaped frame 931, and the limiting plate 932 is fixedly mounted on the striking rod 930. A damping spring 933 is sleeved on the striking rod 930 between the limiting plate 932 and the U-shaped frame 931. The design of these components is to make the striking action more stable and powerful.

[0047] In an embodiment of the present invention, when the conveyor belt 8 moves to the top, the cylinder 919 is activated to drive the connecting rod 920 and the splined rod 921 to move into the second splined groove 918 of the transmission rod 916 and the first splined groove 83 of the drive shaft 81. The servo motor 910 is activated to replace the drive rod 911 and rotate synchronously. The drive rod 911, in conjunction with the first synchronous belt pulley assembly 912, drives the positioning shaft 913 to rotate synchronously. The positioning shaft 913, through the second synchronous belt pulley assembly 917, drives the transmission rod 916 to rotate synchronously. The transmission rod 916, in conjunction with the second splined groove 918, drives the splined rod 921 to rotate synchronously. This causes the splined rod 921, in conjunction with the first splined groove 83, to drive the drive shaft 81 and the conveyor roller 82 to rotate synchronously. This causes the conveyor roller 82 to drive the conveyor belt 8 to convey the material to the discharge channel 5 side, thereby allowing the conveyor belt 8 to convey and discharge the impurities generated after filtration to the discharge channel 5 side.

[0048] Simultaneously, when the positioning shaft 913 rotates, it works in conjunction with the bevel gear set 914 to drive the reciprocating screw 93 to rotate synchronously. The reciprocating screw 93, together with the moving block 92, the fixed rod 91, the positioning block 94, and the connecting rod 95, drives the scraper 96 to move upward from the bottom of the conveyor belt 8, so that the scraper 96 scrapes off the sticky impurities on the conveyor belt 8, thereby cleaning the surface of the conveyor belt 8. When the pulley 99 moves from the moving groove 14 to the guide groove 15, the tilt angle of the guide groove 15 changes, causing the pulley 99 to work with the movable rod 98 to drive the scraper 96 to rotate. This causes the scraper 96 to scrape off the surface of the conveyor belt 8 and the impurities remaining on the scraper 96 to fall onto the conveyor belt 8, thereby achieving self-cleaning of the surface of the scraper 96. Then, the impurities are conveyed to the discharge channel 5 through the conveyor belt 8. As the reciprocating screw 93 continues to rotate, the scraper 96 is reset. This process is repeated to achieve continuous cleaning of the conveyor belt 8.

[0049] When the drive rod 911 rotates, it drives the mounting shaft 923 to rotate synchronously through the third synchronous belt pulley assembly 924. The mounting shaft 923 drives the actuating rod 925 to rotate synchronously. During the rotation of the actuating rod 925, it works with the convex rod 928 to drive the sleeve rod 927 to rotate downward. When the sleeve rod 927 rotates, it drives the push rod 929 and the pawl 934 to move. This causes the push rod 929 to drive the striking rod 930 to move downward on the U-shaped frame 931 and strike the surface of the conveyor belt 8. This prevents the filtered impurities from adhering to the conveyor belt 8. After the conveyor belt 8 is struck, the cleaning effect of the scraper 96 on the conveyor belt 8 is enhanced.

[0050] Simultaneously, when the striking rod 930 moves downward, it can drive the limiting plate 932 to move downward and compress the damping spring 933. Then, as the sleeve rod 927 rotates from bottom to top, the striking rod 930, under the elastic action of the damping spring 933, works with the limiting plate 932 to drive the striking rod 930 to reset. This causes the striking rod 930 to drive the push rod 929, sleeve rod 927, and pawl 934 to reset. Meanwhile, the ratchet 926, in conjunction with the pawl 934, limits the position of the sleeve rod 927 to prevent it from rotating in the opposite direction.

[0051] Working principle of wastewater filtration device for lithium carbonate production:

[0052] Step 1: The wastewater from lithium carbonate production is fed into the first tank 1 and filtered for the first time using the conveyor belt 8 in the first tank 1. The filtered wastewater is then transported to the second tank 2 via the pump 6 and conveyor pipe 7 in the first tank 1. The wastewater is then filtered for the second time using the conveyor belt 8 in the second tank 2. Finally, the wastewater is transported to the third tank 3 via the pump 6 and conveyor pipe 7 in the second tank 2. The wastewater is then filtered for the third time using the conveyor belt 8 in the third tank 3.

[0053] Step 2: When it is necessary to process the impurities filtered from the surface of the conveyor belt 8, the dual-shaft motor 86 is turned on to drive the first take-up roller 87 and the second take-up roller 88 to rotate, so that the first take-up roller 87 and the second take-up roller 88 can take up the pull rope 85. This causes the pull rope 85, together with the collar 84, the drive shaft 81, and the conveyor roller 82, to move the conveyor belt 8 upward to the position of the discharge channel 5. During this movement, the end of the drive shaft 81, together with the collar 84, slides in the vertical groove 11 and the inclined groove 12. At the same time, as the conveyor belt 8 moves upward, since the diameter of the second take-up roller 88 is larger than the diameter of the first take-up roller 87, the conveyor belt 8 gradually tilts towards the discharge channel 5. Then, the cleaning component 9 is used to clean the surface of the conveyor belt 8.

[0054] Step 3: When the conveyor belt 8 moves to the top, the cylinder 919 is activated, driving the connecting rod 920 and splined rod 921 to move into the second spline groove 918 of the transmission rod 916 and the first spline groove 83 of the drive shaft 81. The servo motor 910 is activated to rotate synchronously in place of the drive rod 911. The drive rod 911, in conjunction with the first synchronous pulley assembly 912, drives the positioning shaft 913 to rotate synchronously. The positioning shaft 913, through the second synchronous pulley assembly 917, drives the transmission rod 916 to rotate synchronously. The transmission rod 916, in conjunction with the second spline groove 918, drives the splined rod 921 to rotate synchronously, thereby causing the splined rod 81 to rotate. The key rod 921, in conjunction with the first spline groove 83, drives the drive shaft 81 and the conveyor roller 82 to rotate synchronously. This causes the conveyor roller 82 to drive the conveyor belt 8 to the discharge channel 5 side, thereby allowing the conveyor belt 8 to discharge the impurities generated after filtration to the discharge channel 5 side. At the same time, when the positioning shaft 913 rotates, it works with the bevel gear set 914 to drive the reciprocating screw 93 to rotate synchronously. The reciprocating screw 93, in conjunction with the moving block 92, the fixed rod 91, the positioning block 94, and the connecting rod 95, drives the scraper 96 to move upward from the bottom of the conveyor belt 8, so that the scraper 96 can scrape off the impurities adhering to the conveyor belt 8.

[0055] Step 4: When the drive rod 911 rotates, it drives the mounting shaft 923 to rotate synchronously through the third synchronous belt pulley assembly 924. The mounting shaft 923 drives the actuating rod 925 to rotate synchronously. During the rotation of the actuating rod 925, it works with the protruding rod 928 to drive the sleeve rod 927 to rotate downward. When the sleeve rod 927 rotates, it drives the push rod 929 and the pawl 934 to move. This causes the push rod 929 to drive the striking rod 930 to move downward on the U-shaped frame 931 and strike the surface of the conveyor belt 8. This prevents the filtered impurities from adhering to the conveyor belt 8. After the conveyor belt 8 is struck, the cleaning effect of the scraper 96 on the conveyor belt 8 is enhanced.

[0056] 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 filtration device for lithium carbonate production, comprising a main tank, a collection box (4) provided on one side of the main tank, and a discharge channel (5) for discharging waste provided at the front end of the main tank, characterized in that: The main pool body includes a first pool body (1), a second pool body (2) and a third pool body (3), which are connected by a pump body (6) and a delivery pipe (7); The first pool (1), the second pool (2) and the third pool (3) are each equipped with a conveyor belt (8) and a cleaning assembly (9) for cleaning the conveyor belt (8). The conveyor belt (8) is located above the input end of the pump body (6). The cleaning component (9) includes a fixed rod (91) located inside the first pool body (1). Positioning blocks (94) are fixedly connected to both sides of the fixed rod (91). A scraper (96) is rotatably connected to the bottom end of the positioning block (94) via a connecting rod (95). A limiting block (97) is fixedly installed on the positioning block (94) on one side of the connecting rod (95). A movable rod (98) is rotatably connected to one side of the surface of the scraper (96). A pulley (99) is slidably installed in the moving groove (14) and the guide groove (15) at the other end of the movable rod (98). A servo motor (910) is fixedly installed on one side of the outer wall of the first pool body (1). A drive rod (911) is fixedly connected to the output end of the servo motor (910). The drive rod (911) is rotatably installed inside the first pool body (1). Several striking parts for striking the conveyor belt (8) are provided on the drive rod (911). A positioning shaft (913) is rotatably connected to the side of the drive rod (911) near the reciprocating screw (93). The positioning shaft (913) and the drive rod (911) are connected by transmission through the first synchronous belt pulley assembly (912). The fixed rod (91) has a movable block (92) that is slidably installed in the slide groove (13) at both ends. A reciprocating screw (93) that is fixedly installed in the slide groove (13) is slidably connected to the movable block (92). The positioning shaft (913) is connected to the reciprocating screw (93) through a bevel gear set (914). A support base (915) is fixedly installed on one side of the outer wall of the first pool body (1). A cylinder (919) is fixedly installed on the support base (915). A connecting rod (920) is provided at the output end of the cylinder (919). A spline rod (921) is provided at the other end of the connecting rod (920). The specifications of the first spline groove (83) are compatible with the specifications of the spline rod (921). A transmission rod (916) is rotatably connected to one side of the support base (915). The transmission rod (916) is connected to the positioning shaft (913) through the second synchronous belt pulley assembly (917). A through second spline groove (918) is opened on the surface of the transmission rod (916). The specifications of the second spline groove (918) are compatible with the specifications of the spline rod (921). The striking component includes a fixed frame (922) rotatably mounted on a drive rod (911). A mounting shaft (923) is rotatably connected to the fixed frame (922). One end of the mounting shaft (923) is connected to the drive rod (911) via a third synchronous pulley assembly (924), and the other end is fixedly connected to a lever (925). A ratchet (926) and a sleeve (927) are sleeved on the outer wall of the mounting shaft (923). The ratchet (926) is fixedly mounted on the fixed frame (922), and a protrusion (928) corresponding to the position of the lever (925) is fixedly connected to the outside of the sleeve (927).

2. The wastewater filtration device for lithium carbonate production according to claim 1, characterized in that: The inner cavity of the first pool body (1) has non-through vertical grooves (11) and inclined grooves (12) on both sides. The upper end of the inner wall of the first pool body (1) has through sliding grooves (13), moving grooves (14) and guide grooves (15). The moving grooves (14) and guide grooves (15) are connected.

3. The wastewater filtration device for lithium carbonate production according to claim 2, characterized in that: A drive shaft (81) is provided on both sides of the conveyor belt (8). The end of the drive shaft (81) is provided with a first spline groove (83). The outer wall of the drive shaft (81) is fixedly connected with a conveyor roller (82) that is connected to the conveyor belt (8). Both ends of the drive shaft (81) are provided with collars (84) that are slidably installed in the vertical groove (11) and the inclined groove (12). The top of the collar (84) is provided with a pull rope (85). The top of the first pool body (1) is provided with a dual-shaft motor (86). The two ends of the dual-shaft motor (86) are respectively provided with a first take-up roller (87) and a second take-up roller (88). The diameter of the second take-up roller (88) is larger than the diameter of the first take-up roller (87). One end of the pull rope (85) on both sides passes through the first pool body (1) and is connected to the first take-up roller (87) and the second take-up roller (88) respectively.

4. The wastewater filtration device for lithium carbonate production according to claim 3, characterized in that: One side of the end of the sleeve rod (927) is provided with a pawl (934) that is compatible with the ratchet (926) via a torsion spring, and the other side is provided with a push rod (929). The other end of the push rod (929) is rotatably connected to a striking rod (930). The bottom of the fixed frame (922) is fixedly connected to a U-shaped frame (931), and the striking rod (930) is slidably mounted on the U-shaped frame (931). The inner end of the U-shaped frame (931) is provided with a limiting plate (932), and the limiting plate (932) is fixedly mounted on the striking rod (930). A damping spring (933) sleeved on the striking rod (930) is provided between the limiting plate (932) and the U-shaped frame (931).

5. A wastewater filtration device for lithium carbonate production according to claim 1, characterized in that: The input end of the pump body (6) between the first pool (1) and the second pool (2) is connected to the bottom of the first pool (1) and the output end is connected to the top of the second pool (2). The input end of the pump body (6) between the second pool (2) and the third pool (3) is connected to the bottom of the second pool (2) and the output end is connected to the top of the third pool (3).

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