A tailings wastewater treatment device based on precious metal recovery

Abstract

This invention belongs to the field of precious metal recycling technology, specifically a tailings wastewater treatment device based on precious metal recycling. It includes a base, with a treatment tank body positioned above the base. Inside the treatment tank body is a shaft with multiple stirring components evenly spaced on it. A base plate is fixedly connected to the inner wall of the treatment tank body, located below the stirring components. The base plate has two symmetrical grooves. This invention utilizes the stirring components to mix and agitate the liquid within the treatment tank body. It employs a bottom-jet spray mechanism that vibrates the mesh fabric, preventing sedimentation and accumulation at the bottom of the tank body. Simultaneously, the jet-generated bubbles move upwards in the liquid, further enhancing the acid-base mixing effect and shortening the acid-base reaction time.

Description

Technical Field

[0001] This invention relates to the field of tailings wastewater treatment technology, and in particular to a tailings wastewater treatment device based on precious metal recovery. Background Technology

[0002] Wastewater generated during precious metal refining often contains certain amounts of precious metal elements such as Au, Pd, Pt, Rh, and Ir. Common methods for recovering precious metals from this wastewater include metal displacement, chemical precipitation, or resin adsorption. While metal displacement methods can enrich and recover precious metals, the recovered residue can be contaminated by various reagents, resulting in a precious metal refining process that is 2-3 times longer and requires 3-4 more refining stages.

[0003] In the treatment of tailings waste liquid from precious metal recovery, a settling operation is required. The settling process is usually carried out in a treatment tank. Currently, the treatment tank only directly stirs and mixes the internal mixed liquid during the settling process. Because sediment accumulates at the bottom after settling, the reaction is incomplete and the treatment efficiency is low. Summary of the Invention

[0004] The tailings waste liquid treatment device based on precious metal recovery proposed in this invention includes a base, a treatment tank body is arranged on the top of the base, and a shaft is arranged inside the treatment tank body. Multiple stirring components are arranged equidistantly on the shaft. A base plate is fixedly connected to the inner wall of the treatment tank body and is located below the multiple stirring components. Two symmetrical grooves are opened on the base plate, and the inner wall of each groove is fixedly connected to a mesh cloth. Two symmetrical rectangular grooves are opened at the bottom of the treatment tank body. One-way airflow valves are fixedly connected to the inner wall of each rectangular groove, and multiple equidistant exhaust holes are opened on each of the two one-way airflow valves. An outer cylinder is fixedly connected to the outer wall of the treatment tank body, and two symmetrical arc-shaped grooves are opened on the inner wall of the outer cylinder. Insulation plates are fixedly connected to the inner wall of the arc-shaped grooves.

[0005] Preferably, the stirring assembly includes a rotating base, a stirring rod, and contact balls. The rotating base is fixedly connected to the outer wall of the shaft. Multiple contact balls are located on the same stirring rod and are equidistantly distributed. The surface of the contact balls is set as a dispersed plate shape. The outer wall of the rotating base has multiple rectangular grooves equidistantly opened around its circumference. The inner wall of each rectangular groove is movably connected to a flipping block. The upper and lower outer walls of the flipping block are each provided with a circular groove. The inner wall of each circular groove is fixedly connected to a return spring. The other end of the return spring is fixedly connected to one side of the outer wall of the rotating base.

[0006] Preferably, a top cover is fixedly connected to the top of the treatment tank body, a partition is provided below the top cover, the partition is fixedly connected to the inner wall of the treatment tank body, and an air vent is provided on the partition in a circumferentially equidistant manner. An exhaust chamber is provided between the partition and the top cover.

[0007] Preferably, multiple condensation plates are fixedly connected to the lower outer wall of the partition, and the multiple condensation plates are distributed equidistantly in a circle. Two circular holes are opened on both the top cover and the partition. The two circular holes have different diameters. A feeding pipe is fixedly connected to the inner wall of the larger diameter circular hole, and a dispensing pipe is fixedly connected to the inner wall of the smaller diameter circular hole. A rectangular hole is opened on the main body of the treatment tank, and a pH electronic tester is fixedly connected to the inner wall of the rectangular hole. The pH electronic tester is located below the partition.

[0008] Preferably, a sleeve is fixedly connected to the upper outer wall of the treatment tank body, and an exhaust box is provided between two adjacent treatment tank bodies. Multiple short pipes are fixedly connected to both sides of the exhaust box, and the other end of the short pipes is fixedly connected to the inner wall of the exhaust chamber of the two treatment tank bodies respectively. An exhaust port is provided below the exhaust box, and an exhaust pipe is fixedly connected to the exhaust port. The exhaust pipe is fixedly connected to an external gas purification box.

[0009] Preferably, a rectangular hole is provided at the bottom of each processing tank body, a discharge valve is fixedly connected to the inner wall of the rectangular hole, a plurality of equidistant conveying pipes are fixedly connected to the discharge valve, and a feeding pipe is provided between two adjacent processing tank bodies, with the other end of the conveying pipe fixedly connected to the feeding pipe.

[0010] Preferably, a central seat is fixedly connected to the upper outer wall of the base. The central seat is located between the four processing tank bodies. A top frame is provided above the central seat, and two support rods are fixedly connected between the lower outer wall of the top frame and the upper outer wall of the central seat. The two support rods are symmetrically distributed.

[0011] Preferably, the top frame has a circular hole, a hydraulic rod is fixedly connected to the inner wall of the circular hole, a cross pressure plate is fixedly connected to the lower end of the hydraulic rod, the cross pressure plate is located between the top frame and the sleeve, and a sliding rod is fixedly connected to the lower outer wall of the cross pressure plate, and the sliding rod is movably connected to the inner wall of the central seat.

[0012] Preferably, a deflection platform is movably connected to the central base, and connecting rods are fixedly connected to the four outer walls of the deflection platform. A changing seat is fixedly connected to the other end of each connecting rod. The changing seat includes a large sleeve hole and a threaded sleeve hole, and four circumferentially equidistant threaded rods are movably connected to the lower outer wall of the cross pressure plate. The threaded rods are located inside the changing seat, and the bottom end of the threaded rod is fixedly connected to the shaft.

[0013] Preferably, a driving gear is fixedly connected to the lower outer wall of the deflection table, the driving gear is movably connected to the central seat, and a support plate is fixedly connected to the outer wall of the central seat. A reverse motor is fixedly connected to the upper outer wall of the support plate. The output end of the reverse motor is connected to a short shaft through a coupling, and the other end of the short shaft is fixedly connected to a driving gear. The driving gear meshes with the driving gear.

[0014] The beneficial effects of this invention are as follows:

[0015] 1. This invention, through the configuration of a base, treatment tank body, shaft, chassis, mesh cloth, one-way airflow valve, exhaust port, outer cylinder, and insulation plate, utilizes a stirring assembly to mix and stir the liquid inside the treatment tank body. It employs bottom-jet airflow to vibrate the mesh cloth, preventing sedimentation at the bottom of the treatment tank body and subsequent accumulation. Simultaneously, the airflow generates bubbles that move upwards in the liquid, further enhancing the acid-base mixing effect and shortening the acid-base reaction time. The heat released during the acid-base neutralization reaction is then insulated by the insulation plate, raising the solution temperature inside the treatment tank body, accelerating the reaction rate, and further improving the sedimentation effect.

[0016] 2. This invention utilizes a stirring assembly. During operation, the stirring rod and contact ball rotate around the rotating base to stir the liquid inside the treatment tank, promoting acid-base neutralization. As the stirring assembly moves upward, the tilting block deflects due to the combined effects of centrifugal force and liquid pressure, causing the return spring to elastically deform. The reverse force of the elastically deformed return spring causes the stirring rod and contact ball to vibrate, further enhancing the mixing effect. The outer wall of the contact ball is a dispersed plate shape, improving contact with the liquid and thus enhancing the overall stirring effect of the internal liquid. The reverse force of the elastically deformed return spring assists in the reset of the tilting block and stirring rod, ensuring they vibrate under the combined effects of centrifugal force and liquid pressure, thereby improving the stirring effect.

[0017] 3. This invention, through the design of a top cover, partition, vent, condensation plate, feeding pipe, dispensing pipe, pH electronic meter, exhaust box, and exhaust pipe, allows for the centralized temporary storage of gases generated during the reaction process in the exhaust chamber. The condensation plate on the partition rapidly condenses the evaporated water vapor back into the liquid inside the treatment tank. The pH electronic meter can monitor the pH value of the liquid inside the treatment tank in real time to ensure overall settling effect. The reaction gas in the exhaust chamber is finally transported to a gas purification box for purification before being discharged, avoiding direct gas discharge into the atmosphere and causing gas pollution.

[0018] 4. This invention, through the installation of a discharge valve, conveying pipe, feeding pipe, central seat, top frame, support rod, hydraulic rod, cross plate, sliding rod, deflecting platform, connecting rod, changing seat, large sleeve hole, threaded sleeve hole, threaded rod, traction gear, reverse motor, and drive gear, enables the following operation: After the device is started, the hydraulic rod extends, causing the cross plate to move downwards. The threaded rod, along with the shaft, pushes the stirring assembly to the lower end, immersing it in the liquid inside the treatment tank. Subsequently, the reverse motor drives the deflecting platform to rotate, causing the changing seat to deflect, moving the large sleeve hole (initially located at the large sleeve hole position) away from the threaded rod. The threaded sleeve hole contacts the outer wall of the threaded rod, and the two engage through the threaded groove. The hydraulic rod drives the cross plate to move upwards, and the threaded rod, after being limited by the threaded sleeve hole, is in a rotating state. Thus, the stirring assembly stirs the solution inside the treatment tank. When the hydraulic rod drives the cross plate to the top, the reversing motor drives the changing seat to reset. The large sleeve hole is located outside the threaded rod, and this cycle is repeated to achieve descent. The contraction movement of the hydraulic rod causes the stirring component to move upward during rotation and stirring. This allows the stirring component to drive the liquid to rotate and tumble, improving the mixing effect. The deflection table allows the threaded rod to have two motion states: one is that the threaded rod is located in the large sleeve hole of the deflection table, and the threaded rod only receives pressure to drive the stirring component to descend; the other is that the threaded rod is located in the threaded sleeve hole of the deflection table, and the threaded groove on the threaded rod matches the threaded protrusion on the inner wall of the threaded sleeve hole. The threaded rod receives an upward pulling force and a deflection force applied by the threaded sleeve hole, causing the threaded rod to rotate and drive the stirring component to move. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the tailings waste liquid treatment device based on precious metal recovery proposed in this invention.

[0020] Figure 2 This is a cross-sectional view of the treatment tank body of the tailings waste liquid treatment device based on precious metal recovery proposed in this invention.

[0021] Figure 3 This is a schematic diagram of the bottom structure of the treatment tank body of the tailings waste liquid treatment device based on precious metal recovery proposed in this invention.

[0022] Figure 4 This is a schematic diagram of the stirring component structure of the tailings waste liquid treatment device based on precious metal recovery proposed in this invention.

[0023] Figure 5 This is a schematic diagram of the partition structure of the tailings waste liquid treatment device based on precious metal recovery proposed in this invention.

[0024] Figure 6 This is a side view of the tailings wastewater treatment device based on precious metal recovery proposed in this invention.

[0025] Figure 7 This is a partial structural schematic diagram of the tailings waste liquid treatment device based on precious metal recovery proposed in this invention;

[0026] Figure 8 This is a schematic diagram of the deflection table structure of the tailings waste liquid treatment device based on precious metal recovery proposed in this invention.

[0027] In the diagram: 1. Base; 2. Processing tank body; 3. Shaft; 4. Chassis; 5. Mesh cloth; 6. One-way airflow valve; 7. Exhaust port; 8. Outer cylinder; 9. Insulation board; 10. Rotary seat; 11. Stirring rod; 12. Contact ball; 13. Tilting block; 14. Return spring; 15. Top cover; 16. Baffle plate; 17. Vent; 18. Condensation plate; 19. Feeding pipe; 20. Batching pipe; 21. pH electronic meter; 22. 23. Sleeve; 24. Exhaust box; 25. Exhaust pipe; 26. Discharge valve; 27. Conveying pipe; 28. Feeding pipe; 29. ​​Central seat; 30. Top frame; 31. Support rod; 32. Hydraulic rod; 33. Cross pressure plate; 34. Slide rod; 35. Deflection table; 36. Connecting rod; 37. Changing seat; 38. Large sleeve hole; 39. Threaded sleeve hole; 40. Threaded rod; 41. Driving gear; 42. Reverse motor; 43. Drive gear. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] Tailings wastewater treatment devices based on precious metal recovery, such as Figure 1 , Figure 2 and Figure 3 As shown, the system includes a base 1, a processing tank body 2 located above the base 1, and a shaft 3 inside the processing tank body 2. Multiple stirring components are equidistantly arranged on the shaft 3. A base plate 4 is bolted to the inner wall of the processing tank body 2, and the base plate 4 is located below the multiple stirring components. Two symmetrical grooves are formed on the base plate 4, and mesh cloth 5 is bolted to the inner wall of each groove. Two symmetrical rectangular grooves are formed at the bottom of the processing tank body 2, and one-way airflow valves 6 are bolted to the inner wall of each rectangular groove. Multiple equidistant vent holes 7 are formed on each of the two one-way airflow valves 6. An outer cylinder 8 is bolted to the outer wall of the processing tank body 2, and two symmetrical arc-shaped grooves are formed on the inner wall of the outer cylinder 8. Insulation plates 9 are bolted to the inner wall of the arc-shaped grooves. The heat released during the acid-base neutralization reaction in the settling process is then insulated by the insulation plates 9, increasing the solution temperature inside the processing tank body 2, accelerating the reaction rate, and further improving the settling effect.

[0030] Furthermore, such as Figure 4 As shown, the stirring assembly includes a rotating base 10, a stirring rod 11, and contact balls 12. The rotating base 10 is bolted to the outer wall of the shaft 3. Multiple contact balls 12 are equidistantly distributed on the same stirring rod 11. The surface of the contact balls 12 is set as a dispersed plate shape. The outer wall of the rotating base 10 has multiple rectangular grooves equidistantly spaced around its circumference. The inner wall of each rectangular groove is rotatably connected to a flipping block 13 via a bearing. The upper and lower outer walls of the flipping block 13 are both provided with circular grooves. The inner walls of each circular groove are bolted to a return spring 14. The other end of the return spring 14 is bolted to one side of the outer wall of the rotating base 10. The outer wall of the contact balls 12 is a dispersed plate shape, which improves the contact effect with the liquid, thereby improving the overall stirring effect of the internal liquid. The reverse force after the elastic deformation of the return spring 14 is used to assist the return of the flipping block 13 and the stirring rod 11, so that they can be in a shaking state under the combined action of rotational centrifugal force and liquid pressure, thereby improving the stirring effect.

[0031] Furthermore, such as Figure 2 and Figure 5 As shown, a top cover 15 is bolted to the top of the treatment tank body 2. A baffle 16 is located below the top cover 15 and is bolted to the inner wall of the treatment tank body 2. The baffle 16 has vents 17 evenly distributed in a circle. An exhaust chamber is located between the baffle 16 and the top cover 15. Multiple condensation plates 18 are bolted to the lower outer wall of the baffle 16 and are evenly distributed in a circle. Both the top cover 15 and the baffle 16 have two circular holes of different diameters. A feeding pipe 19 is bolted to the inner wall of the larger diameter hole, and a dispensing pipe 20 is bolted to the inner wall of the smaller diameter hole. A rectangular hole is also provided on the treatment tank body 2, and a pH electronic meter 21 is bolted to the inner wall of the rectangular hole. The pH electronic meter 21 is located below the baffle 16. The exhaust chamber can monitor the reaction process. The generated gas is temporarily stored in a centralized manner. The condensation plate 18 on the partition 16 quickly condenses the evaporated water vapor back into the liquid inside the treatment tank body 2. The pH electronic tester 21 can detect the pH value of the liquid inside the treatment tank body 2 in real time, improving the settling effect. The upper outer wall of the treatment tank body 2 is connected to a sleeve 22 by bolts, and an exhaust box 23 is set between two adjacent treatment tank bodies 2. Multiple short pipes are bolted to both sides of the exhaust box 23. The other end of the short pipes is bolted to the inner wall of the exhaust chamber of the two treatment tank bodies 2. An exhaust port is set at the bottom of the exhaust box 23. An exhaust pipe 24 is bolted to the exhaust port. The exhaust pipe 24 is bolted to the external gas purification box. The reaction gas in the exhaust chamber is finally transported to the gas purification box for purification treatment before being discharged, avoiding the gas from being directly discharged into the atmosphere and causing gas pollution.

[0032] Furthermore, such as Figure 7 As shown, rectangular holes are provided at the bottom of the treatment tank body 2. A discharge valve 25 is bolted to the inner wall of the rectangular hole. Multiple equidistant conveying pipes 26 are bolted to the discharge valve 25. A feeding pipe 27 is provided between two adjacent treatment tank bodies 2. The other end of the conveying pipe 26 is bolted to the feeding pipe 27.

[0033] Furthermore, such as Figure 6 , Figure 7 and Figure 8 As shown, a central support 28 is bolted to the upper outer wall of the base 1. The central support 28 is located between the four processing tank bodies 2. A top frame 29 is installed above the central support 28, and two support rods 30 are bolted between the lower outer wall of the top frame 29 and the upper outer wall of the central support 28. The two support rods 30 are symmetrically distributed. A circular hole is opened on the top frame 29, and a hydraulic rod 31 is bolted to the inner wall of the circular hole. A cross pressure plate 32 is bolted to the lower end of the hydraulic rod 31. The cross pressure plate 32 is located between the top frame 29 and the sleeve 22, and the lower outer wall of the cross pressure plate 32 is bolted to the sleeve 22. A sliding rod 33 is bolted to the inner wall of the central seat 28. The contraction of the hydraulic rod 31 causes the stirring assembly to move upward during rotation and stirring, thereby driving the liquid to rotate and tumble, improving the mixing effect. A deflector 34 is rotatably connected to the central seat 28 via bearings. Connecting rods 35 are bolted to the four outer walls of the deflector 34. The other end of each connecting rod 35 is bolted to a changing seat 36, which includes a large sleeve hole 37 and a threaded sleeve. The lower outer wall of the cross pressure plate 32 is rotatably connected to four circumferentially spaced threaded rods 39 via bearings. The threaded rods 39 are located inside the changing seat 36. The bottom end of the threaded rods 39 is connected to the shaft 3 by bolts. The deflection table 34 allows the threaded rods 39 to have two motion states: one is that the threaded rods 39 are located in the large sleeve hole 37 of the deflection table 34, and the threaded rods 39 only receive pressure and drive the stirring assembly to descend; the other is that the threaded rods 39 are located in the threaded sleeve hole 38 of the deflection table 34, and the threaded grooves on the threaded rods 39 fit with the threaded protrusions on the inner wall of the threaded sleeve hole 38. When the threaded rod 39 receives an upward pulling force and a deflection force applied by the threaded sleeve 38, the threaded rod 39 rotates, driving the stirring assembly to move. The lower outer wall of the deflection table 34 is bolted to a driving gear 40, which is sleeved with the central seat 28. The outer wall of the central seat 28 is bolted to a support plate, and the upper outer wall of the support plate is bolted to a reversing motor 41. The output end of the reversing motor 41 is connected to a short shaft through a coupling, and the other end of the short shaft is bolted to a driving gear 42. The driving gear 42 meshes with the driving gear 40.

[0034] Working principle: The feeding pipe 19 is connected to the external waste liquid conveying pipe, and the dispensing pipe 20 is connected to the external alkaline treatment liquid conveying pipe. During the treatment process, the settling agent enters the treatment tank body 2 through the feeding pipe 19, and the alkaline treatment liquid enters the treatment tank body 2 through the dispensing pipe 20. When the device is started, the hydraulic rod 31 extends, driving the cross plate 32 to move downward. The threaded rod 39, together with the shaft rod 3, pushes the stirring assembly to the lower end, immersing the stirring assembly in the liquid inside the treatment tank body 2. Subsequently, the reverse motor 41 drives the deflection table 34 to rotate, and the changing seat 36 deflects. The large sleeve hole 37 (initially the threaded rod 39 is located at the position of the large sleeve hole 37) is moved away from the threaded rod 39, and the threaded sleeve hole 38 contacts the outer wall of the threaded rod 39. The two are engaged through the threaded groove. The hydraulic rod 31 drives the cross plate 32 to move upward. After the threaded rod 39 is limited by the threaded sleeve hole 38, it is in a rotating state. Then the stirring assembly stirs the solution in the treatment tank body 2. When the hydraulic rod 31 drives the cross plate 32 to the top, the reverse motor 41 drives the changing seat 36 to reset. The large sleeve hole 37 is located outside the threaded rod 39. The cycle continues.

[0035] During the operation of the stirring assembly, the stirring rod 11 and the contact ball 12 rotate around the rotating seat 10 to stir the liquid in the treatment tank body 2, promoting acid-base neutralization inside. As the stirring assembly moves upward, due to the combined action of centrifugal force and liquid pressure, the tilting block 13 will deflect, and the return spring 14 will undergo elastic deformation. Under the reverse action of the elastic deformation of the return spring 14, the stirring rod 11 and the contact ball 12 will be in a shaking state, further improving the stirring and mixing effect. During the entire stirring process, the one-way airflow valve 6 will exhaust the treatment tank body 2 through the exhaust port 7. After the gas is discharged upward, the mesh cloth 5 is under force, while the liquid in the treatment tank body 2 is in a rotating flow state. The mesh cloth 5 is under uneven force, so the mesh cloth 5 is always in a vibrating state, which will bounce up the sediment at the bottom, further improving the stirring and mixing effect.

[0036] During the settling process, the gas generated after the reaction enters the exhaust chamber through the partition 16 and enters the external gas purification box through the exhaust box 23 and the exhaust pipe 24 for purification. During the settling process, the pH value inside the treatment tank 2 is detected by the pH electronic tester 21. When the pH value reaches the standard, the stirring component stops working, the discharge valve 25 opens and discharges the internally treated liquid from the conveying pipe 26 into the feeding pipe 27 for dehydration treatment.

[0037] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A tailings wastewater treatment device based on precious metal recovery, comprising a base (1), characterized in that, The processing tank body (2) is provided above the base (1), and the processing tank body (2) is provided with a shaft (3) inside. Multiple stirring components are provided on the shaft (3) at equal intervals. The inner wall of the processing tank body (2) is fixedly connected to a chassis (4), and the chassis (4) is located below the multiple stirring components. Two symmetrical grooves are opened on the chassis (4), and the inner wall of each groove is fixedly connected to a mesh cloth (5). Two symmetrical rectangular grooves are opened at the bottom of the processing tank body (2), and one-way airflow valves (6) are fixedly connected to the inner wall of each rectangular groove. Multiple equidistant exhaust holes (7) are opened on each of the two one-way airflow valves (6). An outer cylinder (8) is fixedly connected to the outer wall of the processing tank body (2), and two symmetrical arc-shaped grooves are opened on the inner wall of the outer cylinder (8). A heat insulation plate (9) is fixedly connected to the inner wall of the arc-shaped grooves. The stirring assembly includes a rotating seat (10), a stirring rod (11), and contact balls (12). The rotating seat (10) is fixedly connected to the outer wall of the shaft (3). Multiple contact balls (12) are located on the same stirring rod (11) and are distributed at equal intervals. The surface of the contact balls (12) is set as a dispersed plate shape. The outer wall of the rotating seat (10) is provided with multiple rectangular grooves at equal intervals around the circumference. The inner wall of each rectangular groove is movably connected with a flipping block (13). The upper and lower outer walls of the flipping block (13) are provided with circular grooves. The inner wall of each circular groove is fixedly connected with a return spring (14). The other end of the return spring (14) is fixedly connected to one side of the outer wall of the rotating seat (10). The bottom of each processing tank body (2) is provided with a rectangular hole. A discharge valve (25) is fixedly connected to the inner wall of the rectangular hole. Multiple equidistant conveying pipes (26) are fixedly connected to the discharge valve (25). A feeding pipe (27) is provided between two adjacent processing tank bodies (2). The other end of the conveying pipe (26) is fixedly connected to the feeding pipe (27). The upper outer wall of the base (1) is fixedly connected to a central seat (28), which is located between the four processing tank bodies (2). A top frame (29) is provided above the central seat (28), and two support rods (30) are fixedly connected between the lower outer wall of the top frame (29) and the upper outer wall of the central seat (28). The two support rods (30) are symmetrically distributed. The top frame (29) has a circular hole, and a hydraulic rod (31) is fixedly connected to the inner wall of the circular hole. A cross pressure plate (32) is fixedly connected to the lower end of the hydraulic rod (31). The cross pressure plate (32) is located between the top frame (29) and the sleeve (22). A sliding rod (33) is fixedly connected to the lower outer wall of the cross pressure plate (32). The sliding rod (33) is movably connected to the inner wall of the central seat (28). A deflection platform (34) is movably connected to the central seat (28). A connecting rod (35) is fixedly connected to the four outer walls of the deflection platform (34). A change seat (36) is fixedly connected to the other end of the connecting rod (35). The change seat (36) includes a large sleeve hole (37) and a threaded sleeve hole (38). Four circumferentially spaced threaded rods (39) are movably connected to the lower outer wall of the cross pressure plate (32). The threaded rods (39) are located inside the change seat (36). The bottom end of the threaded rods (39) is fixedly connected to the shaft (3). The lower outer wall of the deflection table (34) is fixedly connected to a driving gear (40), which is movably connected to the central seat (28). The outer wall of the central seat (28) is fixedly connected to a support plate, and the upper outer wall of the support plate is fixedly connected to a reverse motor (41). The output end of the reverse motor (41) is connected to a short shaft through a coupling, and the other end of the short shaft is fixedly connected to a driving gear (42). The driving gear (42) meshes with the driving gear (40).

2. The tailings wastewater treatment device based on precious metal recovery according to claim 1, characterized in that, The top of the treatment tank body (2) is fixedly connected to a top cover (15), and a partition (16) is provided below the top cover (15). The partition (16) is fixedly connected to the inner wall of the treatment tank body (2), and a vent (17) is provided on the partition (16). The vent (17) is equidistantly distributed in a circle, and an exhaust chamber is provided between the partition (16) and the top cover (15).

3. The tailings wastewater treatment device based on precious metal recovery according to claim 2, characterized in that, Multiple condensation plates (18) are fixedly connected to the lower outer wall of the partition (16). The multiple condensation plates (18) are distributed equidistantly in a circle. Two round holes are opened on the top cover (15) and the partition (16). The two round holes have different diameters. A feeding pipe (19) is fixedly connected to the inner wall of the large-diameter round hole, and a dispensing pipe (20) is fixedly connected to the inner wall of the small-diameter round hole. A rectangular hole is opened on the body of the treatment tank (2). A pH electronic tester (21) is fixedly connected to the inner wall of the rectangular hole. The pH electronic tester (21) is located below the partition (16).

4. The tailings wastewater treatment device based on precious metal recovery according to claim 2, characterized in that, A sleeve (22) is fixedly connected to the upper outer wall of the treatment tank body (2), and an exhaust box (23) is provided between two adjacent treatment tank bodies (2). Multiple short pipes are fixedly connected to both sides of the exhaust box (23), and the other end of the short pipes is fixedly connected to the inner wall of the exhaust chamber of the two treatment tank bodies (2). An exhaust port is provided below the exhaust box (23), and an exhaust pipe (24) is fixedly connected to the exhaust port. The exhaust pipe (24) is fixedly connected to the external gas purification box.

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