A fluorine-containing wastewater treatment device with a multi-stage filtration function

Abstract

This application relates to the technical field of wastewater treatment, and discloses a fluorine-containing wastewater treatment device with a multi-stage filtration function, including a flocculation tank. The top of the flocculation tank is fixedly connected with a bearing frame. The middle part of the top of the bearing frame is fixedly connected with a reduction motor. The driving end of the reduction motor is fixedly connected with a rotating shaft. The bottom end of the rotating shaft is connected with a sliding rod through an elbow. The outside of the rotating shaft is sleeved with a hollow screw. The bottom end of the hollow screw is fixedly connected with a connecting frame. The outer wall of the hollow screw is threadedly connected with a threaded disk. The side wall of the threaded disk is fixedly connected with a placement rack. This application realizes the treatment of fluorine-containing wastewater with high quality and high efficiency through three-stage filtration. The overall device process is compact, can quickly separate the flocculants from the water, and the separation effect is complete. The transmission cooperation is reasonable and efficient, reducing the use of energy-consuming equipment, saving manpower and being low-carbon and environmentally friendly.

Description

Technical Field

[0001] The present application relates to the technical field of wastewater treatment, and in particular to a fluorine-containing wastewater treatment device with a multi-stage filtration function. Background Art

[0002] In the industrial sector, fluoride from ores released at high temperatures during non-ferrous metal smelting can escape and dissolve into wastewater. The chemical industry, which uses fluorine-containing raw materials in the manufacture of phosphate fertilizers and fluorine-containing chemical products, also discharges wastewater containing high concentrations of fluoride ions. The electronics industry, which uses hydrofluoric acid and other reagents in chip manufacturing and liquid crystal panel production, generates fluoride-containing wastewater during cleaning processes. In daily life, fluoride released from coal combustion and waste incineration can enter water bodies through rainwater washout. Treating fluoride-containing wastewater is essential. From an environmental perspective, direct discharge without treatment can lead to high concentrations of fluoride ions that harm aquatic life, disrupt the ecological balance, and contaminate soil, affecting soil fertility and crop growth.

[0003] In the past, fluoride-containing wastewater treatment technologies were plagued by numerous challenges. Traditional flocculation and sedimentation methods were slow and susceptible to interference, making it difficult to meet fluoride standards in the effluent. Flotation equipment was energy-intensive, flocs were fragile, and reagent addition was often based on experience, leading to waste and uneven treatment. Subsequent filtration lacked automation, and activated carbon replacement was cumbersome, often leading to direct discharge of adsorption-ineffective wastewater. This application addresses these challenges with innovative designs, including precise flocculation, automatic control, high-efficiency filtration, and self-replacement activated carbon, to achieve both efficient and environmentally friendly treatment of fluoride-containing wastewater. Summary of the invention

[0004] In response to the shortcomings of the existing technology, the present application provides a fluorine-containing wastewater treatment device with a multi-stage filtration function, which solves the problems of low efficiency and high energy consumption in the existing technology for treating fluorine-containing wastewater.

[0005] To achieve the above objectives, the present application is implemented through the following technical solutions: a fluorine-containing wastewater treatment device with multi-stage filtration function, comprising a flocculation tank, a clean water tank for storing clean water installed below the flocculation tank, the top of the flocculation tank is fixedly connected to a supporting frame, the middle of the top of the supporting frame is fixedly connected to a reduction motor, the driving end of the reduction motor is fixedly connected to a rotating shaft, the bottom end of the rotating shaft is connected to a sliding rod through an elbow, the outer shell of the rotating shaft is sleeved with a hollow screw, the top of the hollow screw is fixedly connected to a connecting frame, the top end of the connecting frame is fixedly connected to the bottom end of the supporting frame, the outer wall of the hollow screw is threadedly connected to a threaded disk, the sliding rod is inserted into the inner wall of the threaded disk, the side wall of the threaded disk is fixedly connected to a placing frame, the top of the placing frame is installed with a stirring assembly, and the interior of the placing frame is installed with a filtering assembly;

[0006] It also includes a feeding assembly for feeding flocculants, wherein the feeding assembly is installed on one side of the supporting frame;

[0007] Valve assembly, the valve assembly is installed on the other side of the carrier frame;

[0008] Adsorption assembly for adsorption and filtration, the adsorption assembly is installed below the valve assembly.

[0009] Preferably, the stirring assembly includes a plurality of stirring rods fixedly connected around the placement rack, the ends of the stirring rods are fixedly connected with stirring paddles, and the stirring paddles are inclined.

[0010] Preferably, the filtering assembly includes two semi-circular filter frames, the two filter frames are spliced and placed inside the placement rack, and filter meshes are installed on the inner walls of the filter frames.

[0011] Preferably, the feeding assembly includes a feeding bucket fixedly connected to one side of the carrier frame, a water inlet pipe is fixedly connected to one side of the top of the feeding bucket, a storage bucket is fixedly connected to the other side of the top of the feeding bucket, a partition is fixedly connected to the inner wall of the feeding bucket, a transmission rod is rotatably connected to the inner wall of the partition, a plurality of transmission paddles are fixedly connected to the outer wall of the transmission rod on one side corresponding to the lower part of the water inlet pipe, a retaining ring is fixedly connected to the other side of the rod body of the transmission rod corresponding to the lower part of the storage bucket, at least one feeding cup is installed on the inner wall of the retaining ring, and the outer surface of the retaining ring is close to the inner wall of the feeding bucket.

[0012] Preferably, a discharge pipe is fixedly connected to one side of the bottom end of the feeding bucket corresponding to the lower part of the retaining ring, a water outlet pipe is fixedly connected to the other side of the bottom end of the feeding bucket corresponding to the lower part of the transmission paddles, and a detachable sieve is installed on the inner wall of the water outlet pipe.

[0013] Preferably, the valve assembly includes a valve seat fixedly connected to one side of the bottom of the flocculation tank, a valve head is fixedly connected to the top of the valve seat, a valve rod is slidably connected to the inner wall of the valve head, a valve piece is fixedly connected to the bottom end of the valve rod, a blocking block is fixedly connected to the outer wall of the valve rod, a spring is sleeved on the outer wall of the valve rod corresponding to the cavity of the valve head, an elbow is arranged at the top end of the valve rod, and the bottom of the elbow is close to the inner wall of the flocculation tank.

[0014] Preferably, a roller is installed at the bottom end of the elbow of the valve rod, the edge of the placement rack can contact the bottom of the roller when the placement rack rises, and sealing rings are fixedly connected to both sides of the valve piece corresponding to the inner wall of the valve seat.

[0015] Preferably, the adsorption assembly includes a rotating rod rotatably connected to one side of the bottom end of the flocculation tank. Both sides of the outer wall of the rotating rod are fixedly connected with limiting rods. The end of the rotating rod is fixedly connected with a bearing frame. A placement groove is formed in the inner wall of the bearing frame. A number of guide wheels are installed on both sides of the placement groove. One side of the bottom end of the bearing frame is fixedly connected with a connecting rod. The bottom end of the connecting rod is fixedly connected with a floating ball. An activated carbon assembly is placed inside the bearing frame. A storage assembly for storing the activated carbon assembly is installed on the outer wall of the water purification tank.

[0016] Preferably, the activated carbon assembly includes an adsorption frame. The size of the adsorption frame is adapted to the placement groove inside the bearing frame. Both sides of the inner wall of the adsorption frame are fixedly connected with filter cloths. An activated carbon layer is filled between the filter cloths.

[0017] Preferably, the storage assembly includes a mounting frame fixedly connected to the side wall of the water purification tank. The top end of the mounting frame is fixedly connected with a storage box. The storage box is inclined. A storage groove is formed inside the storage box. Two arc-shaped blocking pieces for blocking the storage groove are installed on one side of the top end of the bearing frame close to the storage box.

[0018] Working principle: The fluorine-containing wastewater is pumped into the inlet pipe through an external device. After removing obvious particulate matters and other impurities through the outlet pipe with a screen, it enters the flocculation tank to complete the primary filtration. During the process of the fluorine-containing wastewater flowing from the inlet pipe to the outlet pipe, the impact of the water flow drives the drive paddle to flip, so that the drive rod drives the retaining ring to rotate. During the rotation of the retaining ring, the flocculant inside the storage barrel can enter the feeding cup. When the retaining ring continues to rotate, the flocculant in the feeding cup enters the flocculation tank through the discharge pipe, and the addition amount of the flocculant can be adjusted corresponding to the water inflow. After the flocculant and the fluorine-containing wastewater enter the flocculation tank, a flocculation reaction occurs. After the flocs precipitate, the reduction motor drives the rotating shaft and the slide rod to rotate, thereby driving the threaded disk and the placement rack to rotate. Since the threaded disk is threadedly connected to the hollow screw rod, the placement rack is lifted. The flocs are filtered through the filter screen. At the same time, the low-speed rotation of the stirring paddle can further mix the fluorine-containing wastewater and the flocculant without destroying the flocs. When the placement rack rises to the top of the hollow screw rod, the treated water and the flocs are separated by the filter screen. The filter screen can be cleaned by removing the filter frame. At the same time, the placement rack pushes up the valve rod, and the valve rod drives the valve plate to rise, so that the valve seat is connected to the flocculation tank, and the treated water is discharged therefrom. After the water is discharged, the reduction motor rotates in the reverse direction, and the placement rack descends and resets to the bottom of the flocculation tank. At the same time, the valve plate is driven by the spring to close. The discharged water is adsorbed and filtered through the activated carbon layer in the adsorption frame and then enters the water purification tank. As the water level in the water purification tank rises, the floating ball moves upward and drives the bearing frame to deflect and tilt in the opposite direction. At this time, the arc-shaped baffle blocks both sides of the storage box to prevent the newly stored adsorption frame inside from sliding out. The adsorption frame placed inside the bearing plate automatically slips off. When the water in the water purification tank is discharged, under the gravity of the connecting rod and the floating ball, the bearing frame deflects and resets. At this time, the opening of the storage box faces the placement groove of the bearing frame, and the newly placed adsorption frame inside automatically slides into the inside of the bearing frame, completing the automatic replacement of the activated carbon component, which is convenient for the next adsorption treatment of sewage. During the deflection of the bearing frame, when rotating through the limiting rod, the end contacts the bottom of the flocculation tank for limiting and controlling the deflection angle. Through the above operations, the fluorine-containing wastewater can be efficiently purified by passing through the triple filtration of the screen, the filter screen and the activated carbon layer in sequence.

[0019] This application provides a fluorine-containing wastewater treatment device with a multi-stage filtration function. It has the following beneficial effects:

[0020] 1. The treatment process of this device in this application is compact and efficient. With the cooperation of the low-speed stirring paddle to strengthen the mixing, the generation of flocs is accelerated. The threaded drive is used to lift the placement rack, and the filter screen accurately separates water and flocs. Compared with the traditional flocculation precipitation and air flotation methods, the time consumption is greatly shortened, and the addition amount of the flocculant can be matched with the water inflow. The way of adding the flocculant at intervals is more conducive to the full mixing of the flocculant and the fluorine-containing wastewater. Each link is seamlessly connected, and the wastewater purification efficiency is significantly improved.

[0021] 2. The automation of this application runs through the whole process. From the wastewater inlet, the addition of flocculant, to the water discharge and the replacement of activated carbon, all operations are automatic. The lifting of the placement rack is linked to the valve for drainage, and the floating ball senses the water replacement to automatically replace the activated carbon. There is no need for frequent manual operation, and the equipment runs continuously. This not only saves manpower, but also only uses a reduction motor for the above operations, which is low-carbon and environmentally friendly while enabling the rapid and continuous treatment of fluoride-containing wastewater, greatly improving the overall working efficiency.

[0022] 3. This application adopts a three-stage filtration method. The first stage uses a sieve to filter the fluoride-containing wastewater to remove large particle impurities, laying a foundation for subsequent purification. The second stage uses the flocculation method to form flocs of fluoride ions and other impurities in the wastewater and filter and separate them. The third stage further adsorbs fluoride ions and other pollutants through activated carbon, with remarkable water purification effect. Brief Description of the Drawings

[0023] Figure 1 is a perspective view of this application;

[0024] Figure 2 is a schematic diagram of the internal structure of the flocculation tank of this application;

[0025] Figure 3 is a schematic diagram of the placement rack structure of this application;

[0026] Figure 4 is a schematic diagram of the blanking component structure of this application;

[0027] Figure 5 is a schematic diagram of the valve component structure of this application;

[0028] Figure 6 is a schematic diagram of the adsorption component structure of this application;

[0029] Figure 7 is a schematic diagram of the activated carbon component structure of this application.

[0030] Among them, 1. Flocculation tank; 2. Bearing rack; 3. Feed bucket; 4. Reduction motor; 5. Valve stem; 6. Valve head; 7. Bearing frame; 8. Installation frame; 9. Storage box; 10. Water purification tank; 11. Connecting frame; 12. Hollow screw; 13. Placement rack; 14. Slide bar; 15. Roller; 16. Rotating shaft; 17. Filter frame; 18. Filter net; 19. Threaded disc; 20. Stirring rod; 21. Stirring paddle; 22. Transmission paddle; 23. Water inlet pipe; 24. Partition board; 25. Storage barrel; 26. Blanking cup; 27. Transmission rod; 28. Retaining ring; 29. Discharge pipe; 30. Outlet pipe; 31. Spring; 32. Stopper; 33. Valve seat; 34. Valve plate; 35. Sealing ring; 36. Guide wheel; 37. Adsorption frame; 38. Connecting rod; 39. Floating ball; 40. Rotating rod; 41. Limiting rod; 42. Arc-shaped baffle; 43. Filter cloth; 44. Activated carbon layer. Detailed implementation manners

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings of the present application specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0032] Embodiment:

[0033] Please refer to the attached Figures 1-3 , the embodiment of the present application provides a fluorine-containing wastewater treatment device with a multi-stage filtering function, including a flocculation tank 1. A water purification tank 10 for storing purified water is installed below the flocculation tank 1. A water outlet with a sealing cover is provided at the bottom of the water purification tank 10. A carrier frame 2 is fixedly connected to the top end of the flocculation tank 1. A reduction motor 4 is fixedly connected to the middle of the top end of the carrier frame 2. The driving end of the reduction motor 4 is fixedly connected to a rotating shaft 16. The bottom end of the rotating shaft 16 is connected to a sliding rod 14 through an elbow. A hollow screw 12 is sleeved outside the rotating shaft 16. The top end of the hollow screw 12 is fixedly connected to a connecting frame 11. The top end of the connecting frame 11 is fixedly connected to the bottom end of the carrier frame 2. A threaded disc 19 is threadedly connected to the outer wall of the hollow screw 12. The sliding rod 14 passes through the inner wall of the threaded disc 19. A placing frame 13 is fixedly connected to the side wall of the threaded disc 19. A stirring assembly is installed at the top end of the placing frame 13. A filtering assembly is installed inside the placing frame 13. The stirring assembly includes a plurality of stirring rods 20 fixedly connected around the placing frame 13. Stirring paddles 21 are fixedly connected to the ends of the stirring rods 20. The stirring paddles 21 are inclined. The filtering assembly includes two semi-circular filter frames 17. The two filter frames 17 are spliced and placed inside the placing frame 13. Filter meshes 18 are installed on the inner walls of the filter frames 17.

[0034] Specifically, after the flocculant and the fluorine-containing wastewater enter the flocculation tank 1, a flocculation reaction occurs. The reaction time is 5 - 8 minutes. After the flocs precipitate, the reduction motor 4 drives the rotating shaft 16 and the sliding rod 14 to rotate. The reduction motor 4 provides stable and controllable power to ensure the precise execution of subsequent actions, thereby driving the threaded disk 19 and the placement rack 13 to rotate. Since the threaded disk 19 is threadedly connected to the hollow screw 12, the placement rack 13 is lifted. The flocs are filtered through the filter screen 18. At the same time, the low-speed rotation of the stirring paddle 21 can further mix the fluorine-containing wastewater and the flocculant without damaging the flocs. The low-speed rotation can not only strengthen the mixing effect and make the flocculation reaction more complete, but also, due to the appropriate speed, will not break the formed flocs, ensuring the smooth progress of filtration. When the placement rack 13 rises to the top of the hollow screw 12, the treated water and the flocs are separated by the filter screen 18. By removing the filter frame 17, the filter screen 18 can be cleaned. The operation is convenient and it is easy to maintain the equipment. The above separation method is more efficient and thorough compared to the traditional flocculation precipitation or air flotation separation method.

[0035] Please refer to the attached Figure 1 , Figure 2 and Figure 4 , a blanking component for dispensing the flocculant. The blanking component is installed on one side of the carrier 2. The blanking component includes a feed bucket 3 fixedly connected to one side of the carrier 2. One side of the top of the feed bucket 3 is fixedly connected with a water inlet pipe 23, and the other side of the top of the feed bucket 3 is fixedly connected with a storage bucket 25. The inner wall of the feed bucket 3 is fixedly connected with a partition 24. The inner wall of the partition 24 is rotatably connected with a transmission rod 27. On one side of the outer wall of the transmission rod 27 corresponding to the lower part of the water inlet pipe 23, a plurality of transmission paddles 22 are fixedly connected. On the other side of the rod body of the transmission rod 27 corresponding to the lower part of the storage bucket 25, a retaining ring 28 is fixedly connected. At least one blanking cup 26 is installed on the inner wall of the retaining ring 28. The outer surface of the retaining ring 28 is close to the inner wall of the feed bucket 3. One side of the bottom end of the feed bucket 3 corresponding to the lower part of the retaining ring 28 is fixedly connected with a discharge pipe 29. The other side of the bottom end of the feed bucket 3 corresponding to the lower part of the transmission paddles 22 is fixedly connected with a water outlet pipe 30. A detachable screen is installed on the inner wall of the water outlet pipe 30.

[0036] Specifically, the fluorine-containing wastewater is pumped into the water inlet pipe 23 through an external device. During this process, the external device can be a water pump, which can provide stable power to ensure the continuous and stable entry of the fluorine-containing wastewater into the treatment process. Then, the wastewater passes through the water outlet pipe 30 with a screen to remove obvious particulate matters and other impurities and enters the flocculation tank 1 to complete the primary filtration. The screen can effectively intercept impurities such as sediment and large plastic fragments in the wastewater, preventing these impurities from entering the subsequent treatment links and affecting the operation of the equipment and the treatment effect, initially purifying the wastewater and laying a foundation for subsequent fine treatment. During the process of the fluorine-containing wastewater flowing from the water inlet pipe 23 to the water outlet pipe 30, due to the impact of the water flow, the drive paddle 22 is driven to flip, cleverly using the energy of the water flow itself to achieve automatic operation without the need for additional power to drive the drive paddle 22. Thus, the drive rod 27 drives the retaining ring 28 to rotate. During the rotation of the retaining ring 28, the flocculant inside the storage bucket 25 can enter the feeding cup 26. As the retaining ring 28 continues to rotate, the flocculant in the feeding cup 26 enters the inside of the flocculation tank 1 through the discharge pipe 29, and the addition amount of the flocculant can be adjusted corresponding to the water inflow. This automatic and precise flocculant addition method has obvious advantages. On the one hand, it can be adjusted according to the water inflow to ensure that the ratio of the flocculant to the wastewater is always appropriate, avoiding waste caused by excessive flocculant and subsequent treatment problems, or poor flocculation effect caused by too little flocculant. On the other hand, the automatic operation reduces the labor input and improves the treatment efficiency.

[0037] Please refer to the appendix Figure 1 、 Figure 2 and Figure 5 . The valve assembly is installed on the other side of the carrier 2. The valve assembly includes a valve seat 33 fixedly connected to one side of the bottom of the flocculation tank 1. The top of the valve seat 33 is fixedly connected with a valve head 6. The inner wall of the valve head 6 is slidably connected with a valve rod 5. The bottom end of the valve rod 5 is fixedly connected with a valve plate 34. A retaining block 32 is fixedly connected to the outer wall of the valve rod 5. A spring 31 is sleeved in the cavity of the valve head 6 corresponding to the outer wall of the valve rod 5. The top end of the valve rod 5 is provided with an elbow, and the bottom of the elbow is close to the inner wall of the flocculation tank 1. A roller 15 is installed at the bottom end of the elbow of the valve rod 5. When the placement rack 13 rises, the edge of it can contact the bottom of the roller 15. Sealing rings 35 are fixedly connected to both sides of the valve seat 33 corresponding to the valve plate 34.

[0038] Specifically, when the placement rack 13 rises to separate the flocculants, the valve rod 5 is lifted at the same time. The valve rod 5 drives the valve plate 34 to rise, making the valve seat 33 communicate with the flocculation tank 1, and the treated water is discharged therefrom. After the water is discharged, the reduction motor 4 rotates in the reverse direction, and the placement rack 13 descends and resets to the bottom of the flocculation tank 1. At the same time, the valve plate 34 is driven to close by the spring 31. The whole process has a high degree of automation and reduces manual intervention. By setting the roller 15, the friction between the elbow of the valve rod 15 and the edge of the placement rack 13 can be reduced, enabling the valve rod 15 to be smoothly lifted.

[0039] Please refer to the appendix Figure 1 、Figure 6 and Figure 7 An adsorption component for adsorption and filtration is installed below the valve component. The adsorption component includes a rotating rod 40 rotatably connected to one side of the bottom end of the flocculation tank 1. Both sides of the outer wall of the rotating rod 40 are fixedly connected with limiting rods 41. The end of the rotating rod 40 is fixedly connected with a bearing frame 7. A placement groove is formed in the inner wall of the bearing frame 7. A plurality of guide wheels 36 are installed on both sides of the placement groove. One side of the bottom end of the bearing frame 7 is fixedly connected with a connecting rod 38. The bottom end of the connecting rod 38 is fixedly connected with a floating ball 39. An activated carbon component is placed inside the bearing frame 7. A storage component for storing the activated carbon component is installed on the outer wall of the purification tank 10. The activated carbon component includes an adsorption frame 37. The size of the adsorption frame 37 is adapted to the placement groove inside the bearing frame 7. Both sides of the inner wall of the adsorption frame 37 are fixedly connected with filter cloth 43. An activated carbon layer 44 is filled between the filter cloth 43. The storage component includes a mounting frame 8 fixedly connected to the side wall of the purification tank 10. The top end of the mounting frame 8 is fixedly connected with a storage box 9. The storage box 9 is inclined. A storage groove is formed inside the storage box 9. Two arc-shaped blocking pieces 42 for blocking the storage groove are installed on one side of the top end of the bearing frame 7 close to the storage box 9.

[0040] Specifically, the discharged water is adsorbed and filtered by the activated carbon layer 44 in the adsorption frame 37 and then enters the purification tank 10. With its porous structure, the activated carbon layer 44 can effectively adsorb residual fluoride ions and other tiny impurities in the wastewater, further improving the water quality. As the water level inside the purification tank 10 rises, the floating ball 39 moves upward and drives the bearing frame 7 to deflect and tilt in the opposite direction. At this time, the arc-shaped blocking pieces 42 block both sides of the storage box 9 to prevent the newly stored adsorption frame 37 inside from sliding out. The adsorption frame 37 placed inside the bearing plate 7 automatically slips off. When the water in the purification tank 10 is discharged, under the gravity of the connecting rod 38 and the floating ball 39, the bearing frame 7 deflects and resets. At this time, the opening of the storage box 9 faces the placement groove of the bearing frame 7, and the newly stored adsorption frame 37 inside automatically slides out and is guided into the inside of the bearing frame 7 through the guide wheels 36, completing the automatic replacement of the activated carbon component, facilitating the next adsorption treatment of sewage. The automatic replacement function greatly reduces the maintenance workload and ensures the long-term efficient operation of the equipment. When the bearing frame 7 rotates during deflection, the end contacts the bottom of the flocculation tank 1 through the limiting rod 41 for position limitation, controlling the deflection angle and ensuring the stable and accurate movement of the bearing frame 7. Through the above operations, the fluorine-containing wastewater can be efficiently purified by passing through the triple filtration of the screen, the filter screen 18, and the activated carbon layer 44 in sequence.

[0041] Although the embodiments of the present application have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A fluorine-containing wastewater treatment device with a multi-stage filtration function, characterized in that, It includes a flocculation tank (1). Below the flocculation tank (1), a water purification tank (10) for storing purified water is installed. At the top of the flocculation tank (1), a carrier frame (2) is fixedly connected. In the middle of the top of the carrier frame (2), a reduction motor (4) is fixedly connected. The driving end of the reduction motor (4) is fixedly connected to a rotating shaft (16). The bottom end of the rotating shaft (16) is connected to a sliding rod (14) through an elbow. An empty screw (12) is sleeved on the outer part of the rotating shaft (16). The top end of the empty screw (12) is fixedly connected to a connecting frame (11). The top end of the connecting frame (11) is fixedly connected to the bottom end of the carrier frame (2). The outer wall of the empty screw (12) is threadedly connected to a threaded disc (19). The sliding rod (14) passes through the inner wall of the threaded disc (19). On the side wall of the threaded disc (19), a placement frame (13) is fixedly connected. On the top of the placement frame (13), a stirring assembly is installed. Inside the placement frame (13), a filtering assembly is installed; It also includes a feeding assembly for feeding flocculant, and the feeding assembly is installed on one side of the carrier frame (2); a valve assembly, and the valve assembly is installed on the other side of the carrier frame (2); an adsorption assembly for adsorption and filtration. The adsorption assembly is installed below the valve assembly. The adsorption assembly includes a rotating rod (40) rotatably connected to one side of the bottom end of the flocculation tank (1). On both sides of the outer wall of the rotating rod (40), a limiting rod (41) is fixedly connected. At the end of the rotating rod (40), a carrying frame (7) is fixedly connected. A placement groove is opened on the inner wall of the carrying frame (7). On both sides of the placement groove, a number of guide wheels (36) are installed. On one side of the bottom end of the carrying frame (7), a connecting rod (38) is fixedly connected. At the bottom end of the connecting rod (38), a floating ball (39) is fixedly connected. Inside the carrying frame (7), an activated carbon assembly is placed. On the outer wall of the water purification tank (10), a storage assembly for storing the activated carbon assembly is installed.

2. The fluorine-containing wastewater treatment device with a multi-stage filtration function according to claim 1, characterized in that, The stirring assembly includes a number of stirring rods (20) fixedly connected around the placement frame (13). At the ends of the stirring rods (20), stirring paddles (21) are fixedly connected. The stirring paddles (21) are inclined.

3. The fluorine-containing wastewater treatment device with a multi-stage filtration function according to claim 1, characterized in that, The filtering assembly includes two semi-circular filter frames (17). The two filter frames (17) are spliced and placed inside the placement frame (13). On the inner walls of the filter frames (17), filter meshes (18) are installed.

4. A fluorine-containing wastewater treatment device with a multi-stage filtration function according to claim 1, characterized in that, The blanking component includes a feed bucket (3) fixedly connected to one side of the carrier frame (2). One side of the top of the feed bucket (3) is fixedly connected with a water inlet pipe (23), and the other side of the top of the feed bucket (3) is fixedly connected with a storage bucket (25). A partition plate (24) is fixedly connected to the inner wall of the feed bucket (3). A transmission rod (27) is rotatably connected to the inner wall of the partition plate (24). On one side of the outer wall of the transmission rod (27) and below the water inlet pipe (23), a number of transmission paddles (22) are fixedly connected. On the other side of the rod body of the transmission rod (27) and below the storage bucket (25), a retaining ring (28) is fixedly connected. At least one blanking cup (26) is installed on the inner wall of the retaining ring (28), and the outer surface of the retaining ring (28) is close to the inner wall of the feed bucket (3).

5. A fluorine-containing wastewater treatment device with a multi-stage filtration function according to claim 4, characterized in that, On one side of the bottom end of the feed bucket (3) and below the retaining ring (28), a discharge pipe (29) is fixedly connected. On the other side of the bottom end of the feed bucket (3) and below the transmission paddles (22), a water outlet pipe (30) is fixedly connected. A detachable screen is installed on the inner wall of the water outlet pipe (30).

6. The fluorine-containing wastewater treatment device with a multi-stage filtration function according to claim 1, characterized in that, The valve component includes a valve seat (33) fixedly connected to one side of the bottom of the flocculation tank (1). The top of the valve seat (33) is fixedly connected with a valve head (6). A valve rod (5) is slidably connected to the inner wall of the valve head (6). The bottom end of the valve rod (5) is fixedly connected with a valve plate (34). A stop block (32) is fixedly connected to the outer wall of the valve rod (5). A spring (31) is sleeved on the outer wall of the valve rod (5) in the cavity of the valve head (6). The top end of the valve rod (5) is provided with an elbow, and the bottom of the elbow is close to the inner wall of the flocculation tank (1).

7. The fluorine-containing wastewater treatment device with a multi-stage filtration function according to claim 6, characterized in that, A roller (15) is installed at the bottom end of the elbow of the valve rod (5). When the placement rack (13) rises, the edge thereof can contact the bottom of the roller (15). Sealing rings (35) are fixedly connected to both sides of the valve plate (34) on the inner wall of the valve seat (33).

8. A fluorine-containing wastewater treatment device with a multi-stage filtration function according to claim 1, characterized in that, The activated carbon component includes an adsorption frame (37). The size of the adsorption frame (37) is adapted to the inner placement groove of the carrier frame (7). Filter cloths (43) are fixedly connected to both sides of the inner wall of the adsorption frame (37), and an activated carbon layer (44) is filled between the filter cloths (43).

9. A fluorine-containing wastewater treatment device with a multi-stage filtration function according to claim 1, characterized in that, The storage component includes a mounting frame (8) fixedly connected to the side wall of the water purification tank (10). The top end of the mounting frame (8) is fixedly connected with a storage box (9). The storage box (9) is inclined. A storage groove is opened inside the storage box (9). Two arc-shaped blocking pieces (42) for blocking the storage groove are installed on one side of the top end of the carrier frame (7) close to the storage box (9).

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