A structure for removing impurities from wet composite waste liquid of regenerated silicon raw material

Abstract

This invention relates to the field of wastewater purification technology, specifically to a structure for purifying wastewater from the wet process of regenerated silicon raw materials. The structure includes a shallow pool, a reaction pool, and a neutralization tank. The shallow pool is fixedly connected to the outside of the reaction pool. An embedded frame is fixedly connected to the top of the reaction pool, and the inner side of the embedded frame is fixedly connected to the neutralization tank. A smoothing disc is fixedly connected to the bottom of the neutralization tank. This invention provides a structure for purifying wastewater from the wet process of regenerated silicon raw materials. The neutralization tank is installed above the inner side of the shallow pool via the embedded frame, having a certain height difference. This allows water to flow naturally to the inner side of the reaction pool after the electrically controlled valve is opened. A servo motor facilitates the rotation of the floating frame. After the wastewater and suspension or chelating agent are added, the wastewater and agent can be briefly mixed to ensure thorough mixing. After mixing stops, initial sedimentation occurs, and impurities accumulate at the arc-shaped bottom of the reaction pool.

Description

Technical Field

[0001] This invention relates to the field of waste liquid removal technology, specifically to a structure for removing impurities from wet composite waste liquid of recycled silicon raw materials. Background Technology

[0002] As is well known, the wet composite waste liquid of recycled silicon raw materials needs to be uniformly collected into the anti-corrosion conditioning tank for homogenization and mixing during treatment. After pH adjustment and pretreatment by screening large particulate impurities, chemical purification is carried out to remove suspended solids and colloidal silicon impurities in the waste liquid. Subsequently, the waste liquid is separated by adding reagents under alkaline conditions. Then, the environment is adjusted to a neutral to slightly alkaline state and calcium chloride and polyferric sulfate are added to precipitate and remove fluoride ions and residual silicon components. After the reaction, multi-stage precipitation achieves preliminary solid-liquid separation. The supernatant is then subjected to sand filtration and activated carbon adsorption for deep purification.

[0003] In existing technologies, the removal of impurities from wet-process composite waste liquid of recycled silicon raw materials is mostly done in a split arrangement, with independent neutralization reaction tanks, separate sedimentation tanks and multi-stage transfer tanks. The equipment layout is relatively scattered and the pipelines are long, resulting in a large overall footprint. The neutralization tank to the sedimentation tank must be equipped with a transfer pump, transfer pipeline and valve group. Long-term continuous operation results in high power consumption and a high risk of pump wear, pipeline corrosion and leakage. Furthermore, the operating conditions of wet-process waste liquid of recycled silicon are significantly different. The acid-base neutralization reaction is faster under continuous stirring, while the calcium salt defluorination, heavy metal chelation precipitation and floc settling require a long time. Conventional equal-volume series equipment is prone to problems such as rapid accumulation of waste liquid after the reaction, insufficient sedimentation and turbidity. Based on the above-mentioned situation, we found that existing waste liquid removal processes are difficult to avoid the above problems at the same time. Therefore, we propose a structure that adopts an inner and outer nested integrated structure, eliminates redundant independent single equipment, reduces the overall footprint, has a higher degree of equipment integration, reduces the dependence on intermediate conveying power equipment, and at the same time, combines small-volume rapid neutralization with large-volume low-height pool for long-term sedimentation to balance the difference between continuous feeding and slow sedimentation rate for wet composite waste liquid removal of regenerated silicon raw materials. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a structure for removing impurities from wet composite waste liquid of recycled silicon raw materials. It features an integrated structure with nested inner and outer layers, eliminating redundant independent single-unit equipment, reducing the overall footprint, achieving higher equipment integration, and reducing reliance on intermediate conveying power equipment. It also offers the advantages of rapid neutralization with a small volume combined with long-term sedimentation in a large volume, low-height tank to balance continuous feeding and the difference in slow sedimentation rates.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a structure for removing impurities from wet composite waste liquid of recycled silicon raw materials, comprising a shallow pool, a reaction pool and a neutralization tank, wherein the shallow pool is fixedly connected to the outside of the reaction pool, an embedded frame is fixedly connected to the top of the reaction pool, the inner side of the embedded frame is fixedly connected to the neutralization tank, a smoothing disc is fixedly connected to the bottom of the neutralization tank, and six sets of electrically controlled valves are fixedly connected to the bottom of the neutralization tank. An electric cylinder is fixedly connected to the bottom of the neutralization tank, a servo motor is fixedly connected to the telescopic end of the electric cylinder, a floating frame is fixedly connected to the output end of the servo motor, and a sludge scraper is provided at the bottom of the inner side of the reaction tank. A force-bearing rod is fixedly connected to the inner side of the shallow pool, and an isolation plate is fixedly connected to the outer side of the force-bearing rod. A bucket-shaped ring is fixedly connected to the outer side of the force-bearing rod. A pump device is fixedly connected to the outer side of the reaction pool. The liquid outlet of the pump device is located between the reaction pool and the isolation plate, and the liquid inlet of the pump device is fixedly connected to a delivery pipe through a flexible hose.

[0006] The above technical solution involves sequentially arranging a neutralization tank, a reaction tank, and a shallow tank from the inside out. The innermost neutralization tank continuously adjusts the pH after the waste liquid and neutralizing agent are introduced. Subsequently, the waste liquid is continuously and slowly introduced into the inner side of the reaction tank through an open electrically controlled valve. During this process, the waste liquid gradually flows along a smooth disc to the inner side of the reaction tank, minimizing the impact of water flow on the liquid inside the reaction tank. The neutralization tank is installed above the inner side of the shallow tank via an embedded frame, creating a certain height difference. This allows water to flow naturally into the inner side of the reaction tank after the electrically controlled valve is opened. A servo motor facilitates the rotation of the floating frame, allowing the waste liquid to flow smoothly into the reaction tank. After the waste liquid and the reagent are added, they can be briefly mixed to ensure thorough mixing. After mixing stops, the waste liquid is allowed to settle initially. The sludge accumulated at the bottom of the arc-shaped reaction tank during the sedimentation process can be scraped off by driving the sludge scraper to facilitate discharge. The pump device draws the clear sediment from the top of the reaction tank through hoses and delivery pipes and outputs it between the partition plate of the shallow tank and the reaction tank. The water enters the shallow tank through the bottom of the partition plate and flows upward continuously. Suspended particles and silt slide down the inclined funnel-shaped ring because they are neutral, so the water can be collected from the top of the shallow tank for subsequent treatment.

[0007] The invention is further configured such that: a sleeve shell is fixedly connected to the bottom of the neutralization tank; a housing shell is slidably connected to the inner side of the sleeve shell through a sealing element; an electric cylinder is fixedly connected to the inner side of the sleeve shell; the telescopic end of the electric cylinder passes through the bottom of the sleeve shell and is slidably connected to the sleeve shell through a sealing element; and the servo motor is fixedly connected to the inner side of the housing shell, with its output end rotatably connected to the bottom of the housing shell through a sealing element.

[0008] By adopting the above technical solution, a sleeve shell is set up to cooperate with the chassis shell for installing the electric cylinder and servo motor, and a relatively sealed environment is formed. When the electric cylinder pushes and pulls the servo motor, the entire chassis shell will slide along the sleeve shell, so as to achieve the effect of vertically moving the transmission position of the servo motor.

[0009] The present invention is further configured such that: the floating frame includes a bottom shaft fixedly connected to the bottom of the output end of the servo motor, a bottom ring fixedly connected to the outer side of the bottom shaft, a first side leaf fixedly connected to the top of the bottom ring, a middle ring fixedly connected to the top of the first side leaf, an upper frame fixedly connected to the top of the middle ring, a second side leaf fixedly connected to the bottom of the upper frame, and a secondary ring fixedly connected to the side of the second side leaf away from the upper frame.

[0010] By adopting the above technical solution, when the bottom shaft is driven to rotate by the servo motor, the entire floating frame will also rotate. At this time, the first side blade between the bottom ring and the middle ring and the second side blade between the upper frame and the secondary ring will fully agitate the water, so that the agent and the water are fully mixed. Since the bottom position of the floating frame is the sedimentation and sludge accumulation position, it does not actively agitate.

[0011] The present invention is further configured such that: a sliding frame is fixedly connected to the outer side of the upper frame, and a wide ring is fixedly connected to the inner side of the reaction tank, and the inner side of the wide ring is movably connected to the sliding frame.

[0012] By adopting the above technical solution, by setting a sliding frame in conjunction with a wide ring, the sliding frame contacts and rotates along the wide ring when the floating frame rotates, providing a certain auxiliary support effect. When the entire floating frame moves vertically, the sliding frame can also slide vertically along the wide ring.

[0013] The present invention is further configured such that: a mating insert is fixedly connected to the outer side of the bottom shaft, and a insert frame is fixedly connected to the top of the mud scraper.

[0014] By adopting the above technical solution, by setting a matching plug and a frame, when it is necessary to scrape the sludge at the bottom of the reaction tank, the electric cylinder can push the servo motor to descend, and the outer plane of the matching plug connected to the bottom shaft contacts the frame and slides in to complete the docking. At this time, when the bottom shaft is driven to rotate by the servo motor, it can drive the frame and the scraper to rotate.

[0015] The present invention is further configured such that: a feeding rack is fixedly connected to the inner side of the reaction tank, a plurality of inclined plates are fixedly connected to the inner side of the feeding rack, three feeding pipes are fixedly connected to the inner side of the feeding rack, a shut-off valve is fixedly connected to the inner side of the feeding pipes, a sedimentation addition pipe is fixedly connected to the outer side of the reaction tank, and the inner side of the sedimentation addition pipe is connected to the three feeding pipes.

[0016] Using the above technical solution, by setting up a feeding rack in conjunction with inclined plates, suspension or chelating agent is added as needed through the sedimentation dosing pipe. The agent will enter the interior of the reaction tank along the inclined plates. Since the inclined plates are located on the outside of the upward rack, the diffusion of the agent will coincide with the position of the water flow stirred by the first and second side blades, so as to improve the mixing effect. At the same time, during static sedimentation, impurities in the water can also slide down along the inclined plates.

[0017] The present invention is further configured such that: an inclined plate is fixedly connected to the bottom of the shallow pool, and a drain valve is fixedly connected to both the inclined plate and the bottom of the reaction pool.

[0018] By adopting the above technical solution, the impurities that settle in the shallow pool have reduced adhesion compared to those in the reaction tank by setting up an inclined plate. Therefore, they can slide naturally down the inclined bottom surface of the inclined plate and accumulate at the drain valve position at the lowest point. The drain valves located at the bottom of the inclined plate and the reaction tank can respectively discharge the impurities accumulated inside.

[0019] The present invention is further configured such that: a limiting frame is fixedly connected to the outer side of the embedding frame, the inner side of the limiting frame is slidably connected to the conveying pipe, a floating frame is fixedly connected to the bottom of the outer side of the conveying pipe, and a float is installed on the inner side of the floating frame.

[0020] By adopting the above technical solution, a limiting frame is set to assist in supporting the delivery pipe and restrict it to moving only vertically. The floating frame and the float installed on the inner side can keep the bottom of the delivery pipe at the water surface and prevent it from going too deep into the bottom of the reaction tank and coming into contact with impurities.

[0021] The invention is further configured such that: the top of the neutralization tank is provided with a dispensing port; a hollow shaft is rotatably connected to the inner side of the neutralization tank through a sealing element; a support tube is fixedly connected to the bottom and the middle of the outer side of the hollow shaft; a hollow ring is fixedly connected to the outer side of the support tube; a check valve is fixedly connected to the inner side of the hollow ring; and a mixing blade is fixedly connected between the top hollow ring and the bottom hollow ring.

[0022] Using the above technical solution, by setting up a discharge port, waste liquid can be discharged into the neutralization tank. The hollow shaft, while serving as a rotating component, allows neutralizing agent to be introduced into its inner side, and it is discharged from the check valve along the support pipe and hollow ring. The mixing blade is used to mix the neutralizing agent and waste liquid when the central shaft rotates.

[0023] The invention is further configured such that: a geared motor is fixedly connected to the top of the neutralization tank via a frame; a hollow frame is fixedly connected to the top of the hollow shaft; the top of the hollow frame is fixedly connected to the output end of the geared motor; a connecting sleeve is rotatably connected to the outside of the hollow frame via a sealing element; and an extension tube is fixedly connected to the right side of the connecting sleeve.

[0024] By adopting the above technical solution, a geared motor is set up to drive the hollow shaft to rotate. The connecting sleeve is used to connect the extension tube and the hollow frame. The neutralizing agent can be put in through the extension tube and enter the hollow shaft after passing through the hollow frame. The hollow shaft, the hollow frame and the output shaft of the geared motor can rotate together along the connecting sleeve to realize the transmission and the supply of neutralizing agent.

[0025] Compared with the prior art, the present invention provides a structure for removing impurities from wet composite wastewater of recycled silicon raw materials, which has the following beneficial effects: This structure for removing impurities from wet-process composite wastewater of recycled silicon raw materials consists of a neutralization tank, a reaction tank, and a shallow tank arranged sequentially from the inside out. The innermost neutralization tank continuously adjusts the pH after the wastewater and neutralizing agent are introduced. Subsequently, the wastewater is slowly and continuously introduced into the inner side of the reaction tank through an open electrically controlled valve. During this process, the wastewater gradually flows along a smoothing disc to the inner side of the reaction tank, minimizing the impact of water flow on the liquid inside the reaction tank. The neutralization tank is mounted above the inner side of the shallow tank via an embedded frame, providing a certain height difference to facilitate natural water flow to the inner side of the reaction tank after the electrically controlled valve is opened. A servo motor facilitates the rotation of the floating frame. After adding waste liquid and suspension or chelating agent, the waste liquid and agent can be mixed briefly to ensure thorough mixing. After stopping mixing, the mixture is allowed to settle initially. The sludge accumulated at the bottom of the arc-shaped reaction tank during the sedimentation process can be scraped off by driving the sludge scraper to facilitate discharge. The pump device draws the clear sediment from the top of the reaction tank through hoses and delivery pipes and outputs it between the partition plate of the shallow tank and the reaction tank. The water enters the shallow tank through the bottom of the partition plate and flows continuously upward. Suspended particles and silt slide down the inclined funnel-shaped ring because they are neutral, so the water can be collected from the top of the shallow tank for subsequent treatment. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the main structure in this invention; Figure 3 This is a schematic diagram of the internal structure of the reaction tank in this invention; Figure 4 This is a schematic diagram showing the positions of the upper frame and the inclined plate in this invention; Figure 5 This is a schematic diagram of the connection of the hollow shaft in this invention; Figure 6 This is a schematic diagram of the floating frame structure in this invention; Figure 7 This is a schematic diagram of the sludge scraper frame in this invention; Figure 8 This is a front sectional view of the main structure in this invention.

[0027] In the diagram: 1. Shallow pool; 2. Reaction tank; 3. Neutralization tank; 4. Embedded frame; 5. Smooth disc; 6. Electrically controlled valve; 7. Electric cylinder; 8. Servo motor; 9. Floating frame; 91. Bottom shaft; 92. Bottom ring; 93. First side vane; 94. Middle ring; 95. Upper frame; 96. Second side vane; 97. Secondary ring; 10. Sludge scraper; 11. Force rod; 12. Isolation plate; 13. Bucket-shaped ring; 14. Pump device; 15. Delivery pipe; 16. Hollow shaft; 17. Frame 18. Pipe; 19. Hollow ring; 20. Check valve; 21. Mixing blade; 22. Gear motor; 23. Hollow frame; 24. Connecting sleeve; 25. Extension pipe; 26. Sheath; 27. Chassis shell; 28. Sliding frame; 29. ​​Wide ring; 30. Matching insert; 31. Insert frame; 32. Dispensing rack; 33. Inclined blade; 34. Dispensing pipe; 35. Stop valve; 36. Sedimentation dosing pipe; 37. Inclined plate; 38. Drain valve; 39. Limiting frame; 30. Floating frame. Detailed Implementation

[0028] 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.

[0029] Example 1

[0030] Please see Figure 1-8 A structure for removing impurities from wet composite waste liquid of recycled silicon raw materials includes a shallow pool 1, a reaction pool 2 and a neutralization tank 3. The shallow pool 1 is fixedly connected to the outside of the reaction pool 2. An embedded frame 4 is fixedly connected to the top of the reaction pool 2. The inside of the embedded frame 4 is fixedly connected to the neutralization tank 3. A smooth plate 5 is fixedly connected to the bottom of the neutralization tank 3. Six sets of electrically controlled valves 6 are fixedly connected to the bottom of the neutralization tank 3. An electric cylinder 7 is fixedly connected to the bottom of the neutralization tank 3. A servo motor 8 is fixedly connected to the telescopic end of the electric cylinder 7. A floating frame 9 is fixedly connected to the output end of the servo motor 8. A sludge scraper 10 is provided at the bottom inside the reaction tank 2. A force-bearing rod 11 is fixedly connected to the inner side of the shallow pool 1, an isolation plate 12 is fixedly connected to the outer side of the force-bearing rod 11, a funnel-shaped ring 13 is fixedly connected to the outer side of the force-bearing rod 11, a pump device 14 is fixedly connected to the outer side of the reaction pool 2, the liquid outlet of the pump device 14 is located between the reaction pool 2 and the isolation plate 12, and the liquid inlet of the pump device 14 is fixedly connected to a delivery pipe 15 through a flexible hose. The neutralization tank 3, reaction tank 2, and shallow tank 1 are arranged sequentially from the inside out. The neutralization tank 3, located at the innermost part, is used to continuously adjust the pH after the waste liquid and neutralizing agent are introduced. Subsequently, the waste liquid is continuously and slowly introduced into the inner side of the reaction tank 2 through the opened electronically controlled valve 6. During this process, the waste liquid will gradually flow along the smooth plate 5 to the inner side of the reaction tank 2 to reduce the impact of water flow on the liquid inside the reaction tank 2. The neutralization tank 3 is installed above the inner side of the shallow tank 1 by the embedded frame 4, with a certain height difference, which can facilitate the natural flow of water to the inner side of the reaction tank 2 after the electronically controlled valve 6 is opened. The servo motor 8 can easily drive the floating frame 9 to rotate, so as to dissolve the waste liquid and suspension or chelate. After the reagents and other chemicals are added, the waste liquid and the chemicals can be mixed briefly to ensure thorough mixing. After mixing stops, the mixture is allowed to settle initially. The sludge accumulated during the sedimentation process accumulates at the bottom of the arc-shaped reaction tank 2. The sludge can be scraped off by rotating the sludge scraper 10 for easy discharge. The pump device 14 draws the clear sediment from the top of the reaction tank 2 through the hose and the delivery pipe 15 and outputs it between the isolation plate 12 of the shallow pool 1 and the reaction tank 2. The water enters the shallow pool 1 through the bottom of the isolation plate 12 and the water flows upward continuously. Suspended particles and silt slide down along the inclined funnel-shaped ring 13 because they are neutral. Therefore, the water can be collected from the top of the shallow pool 1 for subsequent treatment.

[0031] The neutralization tank 3 has a fixedly connected sleeve shell 25 at its bottom. The inner side of the sleeve shell 25 is slidably connected to a housing shell 26 via a seal. The inner side of the sleeve shell 25 is fixedly connected to an electric cylinder 7. The telescopic end of the electric cylinder 7 passes through the bottom of the sleeve shell 25 and is slidably connected to the sleeve shell 25 via a seal. The servo motor 8 is fixedly connected to the inner side of the housing shell 26, and its output end is rotatably connected to the bottom of the housing shell 26 via a seal. The sleeve shell 25, in conjunction with the housing shell 26, is used to install the electric cylinder 7 and the servo motor 8, creating a relatively sealed environment. When the electric cylinder 7 pushes or pulls the servo motor 8, the entire housing shell 26 slides along the sleeve shell 25, thus vertically moving the transmission position of the servo motor 8. The floating frame 9 includes components fixedly connected to the servo motor... The bottom shaft 91 at the bottom of the output terminal 8 has a bottom ring 92 fixedly connected to its outer side. A first side leaf 93 is fixedly connected to the top of the bottom ring 92. A middle ring 94 is fixedly connected to the top of the first side leaf 93. An upper frame 95 is fixedly connected to the top of the middle ring 94. A second side leaf 96 is fixedly connected to the bottom of the upper frame 95. A secondary ring 97 is fixedly connected to the side of the second side leaf 96 away from the upper frame 95. By setting the bottom shaft 91, when the servo motor 8 drives the bottom shaft 91 to rotate, the entire floating frame 9 will also rotate accordingly. At this time, the first side leaf 93 located between the bottom ring 92 and the middle ring 94, and the second side leaf 96 located between the upper frame 95 and the secondary ring 97, will fully agitate the water, ensuring thorough mixing of the reagent and the water. Since the bottom position of the floating frame 9 is... The sedimentation and sludge accumulation area is not actively agitated. A sliding frame 27 is fixedly connected to the outer side of the upper frame 95, and a wide ring 28 is fixedly connected to the inner side of the reaction tank 2. The inner side of the wide ring 28 is movably connected to the sliding frame 27. By setting the sliding frame 27 to cooperate with the wide ring 28, when the floating frame 9 rotates, the sliding frame 27 contacts and rotates along the wide ring 28, providing a certain auxiliary support effect. When the entire floating frame 9 moves vertically, the sliding frame 27 can also slide vertically along the wide ring 28. A mating block 29 is fixedly connected to the outer side of the bottom shaft 91, and a frame 30 is fixedly connected to the top of the sludge scraper 10. By setting the mating block 29 and the frame 30 to cooperate, when it is necessary to scrape the sludge at the bottom of the reaction tank 2, the servo motor 8 can be driven by the electric cylinder 7 to descend. The outer plane of the mating block 29 connected to the bottom shaft 91 contacts the insertion frame 30 and slides in to complete the docking. At this time, when the bottom shaft 91 is driven to rotate by the servo motor 8, it can drive the insertion frame 30 and the sludge scraper 10 to rotate. A feeding rack 31 is fixedly connected to the inner side of the reaction tank 2. Several inclined plates 32 are fixedly connected to the inner side of the feeding rack 31. Three feeding pipes 33 are fixedly connected to the inner side of the feeding rack 31. A shut-off valve 34 is fixedly connected to the inner side of the feeding pipes 33. A sedimentation addition pipe 35 is fixedly connected to the outer side of the reaction tank 2. The inner side of the sedimentation addition pipe 35 is connected to the three feeding pipes 33. By setting the feeding rack 31 and the inclined plates 32, suspension or chelating agent is added as needed through the sedimentation addition pipe 35. The agent will enter the interior of the reaction tank 2 along the inclined plates 32.Since the inclined plate 32 is located on the outside of the ascending frame 95, the diffusion of the reagent coincides with the position of the water flow stirred by the first side blade 93 and the second side blade 96, thus improving the mixing effect. At the same time, during static sedimentation, impurities in the water can also slide down along the inclined plate 32. The bottom of the shallow pool 1 is fixedly connected to the inclined plate 36, and the bottom of both the inclined plate 36 and the reaction pool 2 are fixedly connected to the drain valve 37. By setting the inclined plate 36, the impurities settled in the shallow pool 1 have less adhesion than those in the reaction pool 2, so they can naturally slide down along the inclined bottom surface of the inclined plate 36, and the drain valve 37 is located at the lowest point. The accumulated impurities are discharged through the drain valves 37 located at the bottom of the inclined plate 36 and the reaction tank 2, respectively. A limiting frame 38 is fixedly connected to the outer side of the embedded frame 4. The inner side of the limiting frame 38 is slidably connected to the conveying pipe 15. A floating frame 39 is fixedly connected to the bottom of the outer side of the conveying pipe 15, and a float is installed on the inner side of the floating frame 39. By setting the limiting frame 38, the conveying pipe 15 is supported and its movement is restricted to vertical. The floating frame 39 and the float installed on its inner side ensure that the bottom of the conveying pipe 15 remains at the water surface, preventing it from protruding too deeply into the bottom of the reaction tank 2 and coming into contact with impurities.

[0032] The working principle of this embodiment is as follows: The waste liquid first flows into the top-integrated neutralization tank 3, and then flows slowly and steadily through the bottom electrically controlled valve 6 and the smoothing disc 5, before being discharged smoothly by gravity into the outer nested reaction tank 2. Flocculation, chelation, and defluorination agents are added directionally through the external sedimentation dosing pipe 35. The servo motor 8 drives the floating frame 9 to rotate, using multiple side blades to agitate the water in the reaction tank 2 throughout, achieving rapid and uniform mixing of the agents and waste liquid. After the reaction is complete, stirring is stopped, and impurities, silica flocs, and fluoride precipitates settle and accumulate at the bottom of the reaction tank 2. When sludge removal is required, the electric cylinder 7 drives the servo motor 9 to rotate. The entire servo motor 8 moves downward, so that the outer side of the bottom shaft 91 and the plug block 29 automatically connect with the sludge scraper frame 10 insert frame 30. The power linkage drives the sludge scraper frame 10 to rotate, scraping off the sludge adhering to the bottom of the pool and discharging it through the bottom drain valve 37. The clarified liquid in the upper layer of the reaction pool 2 is transported to the space between the shallow pool 1 and the isolation plate 12 through the float-adaptive conveying pipe 15 and the pump device 14. The water overflows upward and flows through the bucket-shaped ring 13, relying on gravity to achieve secondary interception and sedimentation of fine suspended solids. The inclined plate 36 at the bottom of the shallow pool 1 facilitates the collection and discharge of impurities, and finally completes the waste liquid neutralization reaction.

[0033] Example 2

[0034] refer to Figure 1-6A structure for removing impurities from wet composite waste liquid of recycled silicon raw materials also includes a neutralization tank 3. The top of the neutralization tank 3 is provided with a discharge port. A hollow shaft 16 is rotatably connected to the inner side of the neutralization tank 3 through a sealing element. A support pipe 17 is fixedly connected to the bottom and middle of the outer side of the hollow shaft 16. A hollow ring 18 is fixedly connected to the outer side of the support pipe 17. A check valve 19 is fixedly connected to the inner side of the hollow ring 18. A mixing blade 20 is fixedly connected between the top hollow ring 18 and the bottom hollow ring 18. By providing the discharge port, waste liquid can be discharged into the neutralization tank 3. While the hollow shaft 16 acts as a rotating component, a neutralizing agent can be introduced into its inner side and discharged from the check valve 19 along the support pipe 17 and the hollow ring 18. The mixing blade 20 is used to mix the neutralizing agent and waste liquid when the central shaft rotates.

[0035] The neutralization tank 3 is fixedly connected to a geared motor 21 via a frame at its top. The hollow shaft 16 is fixedly connected to a perforated frame 22 at its top. The top of the perforated frame 22 is fixedly connected to the output end of the geared motor 21. A connecting sleeve 23 is rotatably connected to the outside of the perforated frame 22 via a seal. An extension tube 24 is fixedly connected to the right side of the connecting sleeve 23. The geared motor 21 is used to drive the hollow shaft 16 to rotate. The connecting sleeve 23 is used to connect the extension tube 24 and the perforated frame 22. The neutralizing agent can be added through the extension tube 24 and enters the hollow shaft 16 after passing through the perforated frame 22. The hollow shaft 16, the perforated frame 22, and the output shaft of the geared motor 21 can rotate together along the connecting sleeve 23 to achieve transmission and supply of the neutralizing agent.

[0036] The working principle of this embodiment is as follows: the recycled silicon wet composite waste liquid enters the tank body from the top inlet of the neutralization tank 3. The neutralizing agent is continuously introduced into the rotating hollow shaft 16 through the extension pipe 24 and the connecting sleeve 23. The reduction motor 21 drives the hollow shaft 16 to rotate at a low speed through the hollow frame 22. The neutralizing agent is released into the waste liquid in one direction through the frame pipe 17, the hollow ring 18 and the check valve 19 to avoid backflow of the waste liquid. The multi-layer mixing blades 20, which rotate synchronously with the hollow shaft 16, carry out all-round and continuous stirring and fusion of the waste liquid and the neutralizing agent in the tank, so as to achieve acid-base homogenization and full neutralization reaction.

[0037] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. Those skilled in the art can make modifications to this embodiment without contributing any inventive step after reading this specification. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A structure for removing impurities from wet composite wastewater of recycled silicon raw materials, comprising a shallow pool (1), a reaction pool (2), and a neutralization tank (3), characterized in that: The shallow pool (1) is fixedly connected to the outside of the reaction pool (2). An embedded frame (4) is fixedly connected to the top of the reaction pool (2). The inside of the embedded frame (4) is fixedly connected to the neutralization tank (3). A smooth plate (5) is fixedly connected to the bottom of the neutralization tank (3). Six sets of electrically controlled valves (6) are fixedly connected to the bottom of the neutralization tank (3). The bottom of the neutralization tank (3) is fixedly connected to an electric cylinder (7), the telescopic end of the electric cylinder (7) is fixedly connected to a servo motor (8), the output end of the servo motor (8) is fixedly connected to a floating frame (9), and a sludge scraper (10) is provided at the bottom of the inner side of the reaction tank (2). A force-bearing rod (11) is fixedly connected to the inner side of the shallow pool (1), and an isolation plate (12) is fixedly connected to the outer side of the force-bearing rod (11). A funnel-shaped ring (13) is fixedly connected to the outer side of the force-bearing rod (11). A pump device (14) is fixedly connected to the outer side of the reaction pool (2). The outlet end of the pump device (14) is located between the reaction pool (2) and the isolation plate (12). The inlet end of the pump device (14) is fixedly connected to a delivery pipe (15) through a flexible hose.

2. The structure for removing impurities from wet composite wastewater of recycled silicon raw materials according to claim 1, characterized in that: The bottom of the neutralization tank (3) is fixedly connected to a shell (25). The inner side of the shell (25) is slidably connected to the housing shell (26) through a seal. The inner side of the shell (25) is fixedly connected to the electric cylinder (7). The telescopic end of the electric cylinder (7) passes through the bottom of the shell (25) and is slidably connected to the shell (25) through a seal. The servo motor (8) is fixedly connected to the inner side of the housing shell (26) and its output end is rotatably connected to the bottom of the housing shell (26) through a seal.

3. The structure for removing impurities from wet composite wastewater of recycled silicon raw materials according to claim 1, characterized in that: The floating frame (9) includes a bottom shaft (91) fixedly connected to the bottom of the output end of the servo motor (8). A bottom ring (92) is fixedly connected to the outside of the bottom shaft (91). A first side leaf (93) is fixedly connected to the top of the bottom ring (92). A middle ring (94) is fixedly connected to the top of the first side leaf (93). An upper frame (95) is fixedly connected to the top of the middle ring (94). A second side leaf (96) is fixedly connected to the bottom of the upper frame (95). A secondary ring (97) is fixedly connected to the side of the second side leaf (96) away from the upper frame (95).

4. The structure for removing impurities from wet composite wastewater of recycled silicon raw materials according to claim 3, characterized in that: A sliding frame (27) is fixedly connected to the outer side of the upper frame (95), and a wide ring (28) is fixedly connected to the inner side of the reaction tank (2). The inner side of the wide ring (28) is movably connected to the sliding frame (27).

5. The structure for removing impurities from wet composite wastewater of recycled silicon raw materials according to claim 3, characterized in that: The bottom shaft (91) is fixedly connected to the outer side of the mating block (29), and the top of the mud scraper (10) is fixedly connected to the insert frame (30).

6. The structure for removing impurities from wet composite wastewater of recycled silicon raw materials according to claim 1, characterized in that: The reaction tank (2) is fixedly connected to a feeding rack (31), and a number of inclined plates (32) are fixedly connected to the inner side of the feeding rack (31). Three feeding pipes (33) are fixedly connected to the inner side of the feeding rack (31), and a shut-off valve (34) is fixedly connected to the inner side of the feeding pipes (33). The reaction tank (2) is fixedly connected to a sedimentation addition pipe (35), and the inner side of the sedimentation addition pipe (35) is connected to the three feeding pipes (33).

7. The structure for removing impurities from wet composite wastewater of recycled silicon raw materials according to claim 1, characterized in that: The bottom of the shallow pool (1) is fixedly connected to an inclined plate (36), and the bottom of both the inclined plate (36) and the reaction pool (2) are fixedly connected to a drain valve (37).

8. The structure for removing impurities from wet composite wastewater of recycled silicon raw materials according to claim 6, characterized in that: The outer side of the embedded frame (4) is fixedly connected to the limiting frame (38), the inner side of the limiting frame (38) is slidably connected to the conveying pipe (15), the bottom of the outer side of the conveying pipe (15) is fixedly connected to the floating frame (39), and the inner side of the floating frame (39) is equipped with a float.

9. The structure for removing impurities from wet composite wastewater of recycled silicon raw materials according to claim 1, characterized in that: The neutralization tank (3) has an inlet at the top. A hollow shaft (16) is rotatably connected to the inner side of the neutralization tank (3) through a sealing element. A support tube (17) is fixedly connected to the bottom and middle of the outer side of the hollow shaft (16). A hollow ring (18) is fixedly connected to the outer side of the support tube (17). A check valve (19) is fixedly connected to the inner side of the hollow ring (18). A mixing blade (20) is fixedly connected between the top hollow ring (18) and the bottom hollow ring (18).

10. A structure for removing impurities from wet composite wastewater of recycled silicon raw materials according to claim 9, characterized in that: The top of the neutralization tank (3) is fixedly connected to a geared motor (21) via a frame. The top of the hollow shaft (16) is fixedly connected to a hollow frame (22). The top of the hollow frame (22) is fixedly connected to the output end of the geared motor (21). The outer side of the hollow frame (22) is rotatably connected to a connecting sleeve (23) via a sealing element. The right side of the connecting sleeve (23) is fixedly connected to an extension tube (24).

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