A high-efficiency filtration treatment device for fluoride-containing wastewater

Abstract

This invention relates to the field of wastewater treatment technology, specifically to a high-efficiency filtration treatment device for fluoride-containing wastewater. The device includes a reaction tank and a filtration chamber disposed inside the reaction tank. The filtration chamber includes an upper rotating plate, a lower rotating plate, and a filter screen. The upper rotating plate is rotatably disposed at the top of the reaction tank and can move towards the lower rotating plate along the axial direction of the reaction tank. The lower rotating plate is rotatably disposed at the bottom of the reaction tank. The filter screen is disposed between the outer peripheries of the upper and lower rotating plates and is made of a flexible material. Multiple stirring blades are disposed on opposite sides of the upper and lower rotating plates. This invention allows the volume of the filtration chamber to change by moving the upper rotating plate along the axial direction of the reaction tank. The integrated filtration chamber structure integrates mixing and filtration processes into a single chamber. Through the coordinated control of mechanical motion, it achieves the functions of flocculant mixing, wastewater impurity filtration, and filter screen self-cleaning, simplifying the equipment process, improving space utilization, and reducing the complexity of operation and maintenance.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a high-efficiency filtration treatment device for fluoride-containing wastewater. Background Technology

[0002] Fluoride-containing wastewater widely originates from industries such as chemical, metallurgical, and electronics, and its treatment technology is directly related to environmental protection and resource recovery. Chemical precipitation, due to its simplicity and controllable cost, has become one of the mainstream processes for treating fluoride-containing wastewater. Its core principle is to add chemical reagents such as calcium and aluminum salts to react with fluoride ions to form insoluble precipitates (such as CaF2 and AlF3), which are then removed through solid-liquid separation. However, when treating highly viscous fluoride-containing wastewater, chemical reagents are difficult to diffuse rapidly, easily forming local concentration gradients and resulting in incomplete fluoride ion reaction. Traditional stirring equipment (such as paddle and turbine mixers) lacks sufficient shear force for viscous fluids, and the mixing path is singular. Especially when treating wastewater containing flocculent suspended solids, dead zones in the stirring can easily appear, prolonging the reaction time and reducing precipitation efficiency.

[0003] Chinese Patent Publication No. CN118894582B discloses a method and apparatus for treating fluoride-containing wastewater, including a reaction chamber with a dispersion mechanism in the center. The dispersion mechanism includes an upper turntable and a lower turntable, with the lower turntable movably connected to the bottom of the upper turntable. Several first mesh plates and blades are arranged circumferentially on the lower turntable. An air inlet mechanism is provided on both the upper and lower turntables, and an air outlet is rotatably mounted on the lower turntable. This patent promotes mixing through the rotation of the first mesh plates and the extrusion of air by airbags. However, the lower turntable relies on the contact between rollers and inclined blocks for reciprocating lifting and lowering. In highly viscous or suspended solids-containing wastewater, impurities can easily clog the flow, and component wear can cause lifting and lowering to become stuck, affecting the stability of the mixing flow field. The blades are fixedly connected to the first mesh plates, and the stirring angle cannot be dynamically adjusted according to the water quality. This results in insufficient adaptability to the shear force of wastewater with different viscosities, easily forming a stirring dead zone. This may lead to the residue of flocculent precipitates, affecting the treatment effect. Furthermore, it lacks a real-time monitoring and feedback adjustment mechanism for water quality parameters, making it difficult to automatically optimize mixing efficiency and energy consumption balance under different operating conditions.

[0004] Invention application content

[0005] To address the aforementioned issues, a high-efficiency filtration treatment device for fluoride-containing wastewater is provided. By moving the upper turntable along the axis of the reaction tank, the volume of the filtration chamber can be changed. The integrated filtration chamber structure integrates the mixing and filtration processes into a single chamber. Through the coordinated control of mechanical motion, the functions of flocculant mixing, wastewater impurity filtration, and filter screen self-cleaning are achieved, simplifying the equipment process, improving space utilization, and reducing the complexity of operation and maintenance.

[0006] To address the problems of existing technologies, this invention provides a high-efficiency filtration treatment device for fluoride-containing wastewater, comprising a reaction tank, with a filtration chamber of variable volume located in the center of the reaction tank. The filtration chamber includes an upper rotating plate, a lower rotating plate, and a filter screen. The upper rotating plate is rotatably mounted on the top of the reaction tank and can move towards the lower rotating plate along the axis of the reaction tank. The lower rotating plate is rotatably mounted on the bottom of the reaction tank. The filter screen is located between the outer peripheries of the upper and lower rotating plates and is made of a flexible material. Multiple stirring blades are provided on opposite sides of the upper and lower rotating plates, and the rotation directions of the upper and lower rotating plates are opposite.

[0007] Preferably, the angles of multiple stirring blades on both the upper and lower turntables can be adjusted, and the adjustment angle of the stirring blades is synchronously adjusted with the change in the distance between the upper and lower turntables.

[0008] Preferably, all the stirring blades of the upper turntable are rotatably connected to it. The upper turntable is provided with a first slide rail that is the same number as the stirring blades and corresponds one-to-one. The first slide rail is inclined. A first slider is provided on the first slide rail and slides with it. A connecting rod is provided between the first slider and the stirring blade. The two ends of the connecting rod are respectively hinged to the first slider and the stirring blade.

[0009] Preferably, the top of the upper turntable is also provided with a drive disk rotatably connected thereto and a first rotary drive motor for driving the drive disk to rotate. The drive disk is provided with a second slide rail corresponding to the first slide rail. The second slide rail extends radially along the drive disk, and the first slider simultaneously slides in cooperation with the second slide rail.

[0010] Preferably, the stirring blades of the lower turntable are all rotatably connected to it, and the stirring blades are provided with a third slide rail and a second slider that can be slidably disposed on the third slide rail. A first electric push rod that can extend and retract in the vertical direction is provided on the lower turntable below the stirring blades, and the first electric push rod is hinged to the second slider.

[0011] Preferably, the top of the reaction vessel is provided with a drive shaft for driving the upper turntable to rotate, and the lower turntable is provided with a telescopic transmission shaft connected to the drive shaft. The ends of the drive shaft and the transmission shaft that are close to each other are provided with a first bevel gear, and a second bevel gear that meshes with the two first bevel gears is provided between the two first bevel gears.

[0012] Preferably, the lower turntable has a conical structure, with a discharge port in the center of the lower turntable, and a discharge channel corresponding to the discharge port is provided on the reaction tank.

[0013] Preferably, the top of the upper turntable is provided with a lifting plate that is rotatably connected thereto, and the lifting plate is provided with a plurality of second electric push rods that are fixedly connected to the top of the reaction vessel.

[0014] Preferably, a feeding chamber is provided in the center of the lifting plate, the feeding chamber is rotatably connected to the upper turntable, a feeding channel communicating with the inside of the filter chamber is provided in the feeding chamber, and a water inlet pipe connected to the feeding channel is provided at the top of the feeding chamber.

[0015] Preferably, a sensor for detecting the distance between the upper and lower turntables is provided inside the filter chamber.

[0016] The advantages of this invention application compared to the prior art are:

[0017] 1. This invention utilizes an upper turntable to rotate around the axis of the reaction tank, while a lower turntable moves towards it along the same axis. Simultaneously, the lower turntable rotates around the same axis. Since both the upper and lower turntables have stirring blades on opposite sides, these blades rotate with the turntables, creating a counter-current shear flow in the filtration chamber. This results in high-intensity turbulent mixing of the additive and fluoride-containing wastewater within the filtration chamber, significantly improving the dispersion efficiency of the additive, shortening the mixing time between the additive and wastewater, and enhancing the adequacy of the reaction. The integrated filtration chamber structure combines mixing and filtration processes into a single chamber. Through coordinated mechanical motion control, it achieves the functions of flocculant mixing, wastewater impurity filtration, and filter screen self-cleaning, simplifying the equipment process, improving space utilization, and reducing maintenance complexity.

[0018] 2. In this invention, as the upper turntable moves closer to or further away from the lower turntable along the axial direction, the distance between the upper and lower turntables changes. At this time, multiple stirring blades on the upper and lower turntables are adjusted simultaneously, avoiding the limitations of stirring blades with fixed angles. This significantly improves the equipment's adaptability to wastewater of different concentrations. At the same time, the periodic angle change of the stirring blades assists the flexible filter screen in achieving self-cleaning, reducing the deposition and clogging of impurities on the filter screen surface, and ensuring the continuity and efficiency of the treatment process. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a high-efficiency filtration treatment device for fluoride-containing wastewater.

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the filter chamber in a high-efficiency filtration treatment device for fluoride-containing wastewater when it is not compressed.

[0021] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0022] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of the filter chamber in a high-efficiency filtration treatment device for fluoride-containing wastewater when it is not compressed.

[0023] Figure 5 This is a three-dimensional structural diagram of the upper and lower rotating discs in a high-efficiency filtration and treatment device for fluoride-containing wastewater.

[0024] Figure 6 This is a three-dimensional structural diagram of the drive disc and upper rotary table in a high-efficiency filtration treatment device for fluoride-containing wastewater.

[0025] Figure 7 A schematic diagram of the three-dimensional structure of the lower rotary table in a high-efficiency filtration treatment device for fluoride-containing wastewater. Figure 1 .

[0026] Figure 8 A schematic diagram of the three-dimensional structure of the lower rotary table in a high-efficiency filtration treatment device for fluoride-containing wastewater. Figure 2 .

[0027] Figure 9 This is a schematic diagram of the cross-sectional structure of the filter chamber during compression in a high-efficiency filtration treatment device for fluoride-containing wastewater.

[0028] Figure 10 This is a schematic diagram of the three-dimensional cross-sectional structure of the filter chamber during compression in a high-efficiency filtration treatment device for fluoride-containing wastewater.

[0029] The numbers on the map are:

[0030] 1. Reaction tank; 11. Drive shaft; 111. Second rotary drive motor; 12. Transmission shaft; 121. First bevel gear; 122. Second bevel gear; 13. Discharge channel; 14. Lifting plate; 141. Second electric push rod; 15. Feed chamber; 151. Feed channel; 152. Water inlet pipe; 2. Filter chamber; 21. Upper turntable; 211. Stirring blade; 212. First slide rail; 2121. First slider; 2122. Connecting rod; 213. Drive plate; 2131. First rotary drive motor; 2132. Second slide rail; 22. Lower turntable; 221. Third slide rail; 2211. Second slider; 222. First electric push rod; 223. Discharge port; 23. Filter screen. Detailed Implementation

[0031] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0032] like Figure 1 , Figure 2 and Figures 4 to 10As shown: A high-efficiency filtration treatment device for fluoride-containing wastewater includes a reaction tank 1. A filter chamber 2 with variable volume is located in the center of the reaction tank 1. The filter chamber 2 includes an upper rotating disk 21, a lower rotating disk 22, and a filter screen 23. The upper rotating disk 21 is rotatably located at the top of the reaction tank 1 and can move towards the lower rotating disk 22 along the axial direction of the reaction tank 1. The lower rotating disk 22 is rotatably located at the bottom of the reaction tank 1. The filter screen 23 is located between the outer peripheries of the upper rotating disk 21 and the lower rotating disk 22, and the filter screen 23 is made of flexible material. Multiple stirring blades 211 are provided on opposite sides of the upper rotating disk 21 and the lower rotating disk 22, and the rotation directions of the upper rotating disk 21 and the lower rotating disk 22 are opposite.

[0033] When the equipment is running, wastewater and additives are first introduced into the filter chamber 2 simultaneously. Initially, the upper turntable 21 is located at the top of the reaction tank 1. At this time, the upper turntable 21 is started to rotate around the axis of the reaction tank 1, while the lower turntable 22 moves closer to the axis of the reaction tank 1. The lower turntable 22 will also rotate around the axis of the reaction tank 1 simultaneously. Since there are stirring blades 211 on opposite sides of the upper and lower turntables 21 and 22, the stirring blades 211 will rotate with the upper and lower turntables 21 and 22, causing the wastewater in the filter chamber 2 to form a counter-shear flow. This causes the additives and fluoride-containing wastewater to form a high-intensity turbulent mixture in the filter chamber 2, which significantly improves the dispersion efficiency of the additives, shortens the mixing time between the additives and wastewater, and enhances the completeness of the reaction.

[0034] The flexible filter screen 23 is sealed between the outer periphery of the upper rotating plate 21 and the lower rotating plate 22. The filter screen 23 will periodically expand and contract with the change of the volume of the filter chamber 2. When the volume of the filter chamber 2 contracts, the wastewater filtration is accelerated by the squeezing action, and the impurities are quickly intercepted. When the volume expands, the external wastewater is continuously mixed with the additives through the circulation of the flow field. At the same time, the deformation of the filter screen 23 will destroy the static deposition state of impurities on its surface, avoid clumping and blockage, and ensure that the channel is unobstructed during filtration.

[0035] The integrated filter chamber 2 structure integrates the mixing and filtration processes into a single chamber. Through the coordinated control of mechanical motion, it achieves the functions of flocculant mixing, wastewater impurity filtration, and filter screen 23 self-cleaning, simplifying the equipment process, improving space utilization, and reducing the complexity of operation and maintenance.

[0036] like Figures 4 to 10 As shown: the angles of multiple stirring blades 211 on the upper turntable 21 and the lower turntable 22 can be adjusted, and the adjustment angle of the stirring blades 211 is synchronously adjusted with the change of the distance between the upper turntable 21 and the lower turntable 22.

[0037] The stirring blades 211 of the upper turntable 21 and the lower turntable 22 are adjusted by angle. When the upper turntable 21 moves closer to or further away from the lower turntable 22 along the axial direction, the distance between the upper turntable 21 and the lower turntable 22 will change. At this time, the multiple stirring blades 211 on the upper turntable 21 and the lower turntable 22 are adjusted simultaneously. For example, when the distance between the upper turntable 21 and the lower turntable 22 is reduced, the stirring blades 211 move away from one side of the upper turntable 21 and the lower turntable 22, so that the stirring blades 211 unfold, increase the radial shear force on the wastewater, accelerate the filtration of wastewater and enhance the interception effect of impurities in the wastewater.

[0038] When the distance between the upper turntable 21 and the lower turntable 22 increases, the stirring blade 211 moves closer to one side of the upper turntable 21 and the lower turntable 22, causing the stirring blade 211 to retract and enhance the axial flow effect. The axial circulating flow generated improves the mixing uniformity of flocculant and wastewater, thereby enabling the equipment to dynamically adjust the flow field morphology under different volume conditions.

[0039] It avoids the limitations of fixed-angle stirring blades 211, significantly improving the equipment's adaptability to wastewater of different concentrations. At the same time, the periodic angle change of stirring blades 211 assists the flexible filter screen 23 in achieving self-cleaning, reducing the deposition and clogging of impurities on the surface of the filter screen 23, and ensuring the continuity and efficiency of the treatment process.

[0040] like Figure 2 , Figures 4 to 6 , Figure 9 and Figure 10 As shown: The stirring blades 211 of the upper turntable 21 are all rotatably connected to it. The upper turntable 21 is provided with a first slide rail 212 that is the same number as the stirring blades 211 and corresponds to them one by one. The first slide rail 212 is inclined. The first slide rail 212 is provided with a first slider 2121 that slides with it. A connecting rod 2122 is provided between the first slider 2121 and the stirring blades 211. The two ends of the connecting rod 2122 are respectively hinged to the first slider 2121 and the stirring blades 211.

[0041] When the distance between the upper turntable 21 and the lower turntable 22 decreases or increases, the first slider 2121 slides along the first slide rail 212, so that the connecting rod 2122 can pull the stirring blade 211 that is hinged to it, so that the stirring blade 211 can rotate around its connection point with the upper turntable 21. Thus, the angle of the stirring blade 211 can be adjusted by the reciprocating sliding of the first slider 2121 on the first slide rail 212.

[0042] When the distance between the upper turntable 21 and the lower turntable 22 is small, the stirring blades 211 move away from one side of the upper turntable 21 and the lower turntable 22, causing the stirring blades 211 to expand, increasing the radial shear force on the wastewater. Combined with the volume contraction of the filter chamber 2, this accelerates the filtration speed of the wastewater through the filter screen 23. When the distance between the upper turntable 21 and the lower turntable 22 is large, the stirring blades 211 move closer to one side of the upper turntable 21 and the lower turntable 22, causing the stirring blades 211 to retract, enhancing the axial flow effect. The axial circulation flow generated improves the thorough mixing of flocculant and wastewater over a larger area.

[0043] like Figure 2 , Figures 4 to 6 , Figure 9 and Figure 10 As shown: The top of the upper turntable 21 is also provided with a drive disk 213 rotatably connected thereto and a first rotary drive motor 2131 for driving the drive disk 213 to rotate. The drive disk 213 is provided with a second slide rail 2132 corresponding to the first slide rail 212. The second slide rail 2132 extends radially along the drive disk 213. The first slider 2121 simultaneously slides in cooperation with the second slide rail 2132.

[0044] The first rotary drive motor 2131 drives the drive disk 213 to rotate around the axis of the upper turntable 21. Since the second slide rail 2132 on the drive disk 213 extends radially, and the first slider 2121 slides in cooperation with both the first slide rail 212 and the second slide rail 2132, and the first slide rail 212 is inclined, the first slider 2121 can slide under the cross constraint of the first slide rail 212 and the second slide rail 2132, thereby driving the connecting rod 2122 connected to the first slider 2121. Through the connecting rod 2122, the stirring blade 211 is pulled or pushed to rotate around the rotational connection point between it and the upper turntable 21, thereby realizing the dynamic adjustment of the angle of the stirring blade 211.

[0045] The rotation of the drive disc 213 can be flexibly adjusted according to the processing requirements by the first rotary drive motor 2131, thereby achieving precise control over the angle change range and response speed of the stirring blade 211, enabling the equipment to adapt to wastewater treatment scenarios with different concentrations and impurity contents.

[0046] like Figure 2 , Figure 4 , Figure 5 , Figures 7 to 10 As shown: The stirring blades 211 of the lower turntable 22 are all rotatably connected to it. The stirring blades 211 are provided with a third slide rail 221 and a second slider 2211 that can be slidably disposed on the third slide rail 221. The lower turntable 22 is provided with a first electric push rod 222 that can extend and retract in the vertical direction below the stirring blades 211. The first electric push rod 222 is hinged to the second slider 2211.

[0047] The lower turntable 22 rotates around the axis of the reaction tank 1, and the first electric actuator 222 extends and retracts vertically, causing the second slider 2211 to slide on the third slide rail 221 of the stirring blade 211. Since the stirring blade 211 is rotatably connected to the lower turntable 22, the sliding of the second slider 2211 causes the stirring blade 211 to oscillate around its connection point with the lower turntable 22, thereby adjusting the angle of the stirring blade 211. When the distance between the upper turntable 21 and the lower turntable 22 changes, the extension and retraction stroke of the first electric actuator 222 is synchronously adapted, so that the angle of the stirring blade 211 on the lower turntable 22 changes in tandem with the stirring blade 211 on the upper turntable 21. Combined with the counter-rotation of the upper turntable 21 and the lower turntable 22, a dynamic flow field is constructed in the filter chamber 2. This allows for precise adjustment of the angle of the stirring blades 211, adapting to the treatment needs of different water qualities. The stirring blades 211 on the lower rotating plate 22 and the upper rotating plate 21 work together to change their angles, making the flow field within the filter chamber 2 more symmetrical and enhancing the mixing effect of flocculant and wastewater. The angle change of the stirring blades 211 also agitates the surface of the filter screen 23, reducing impurity clogging and extending the life of the filter screen 23.

[0048] It should be noted that the first electric actuator 222 will rotate synchronously with the lower turntable 22. Multiple first electric actuators 222 are electrically connected to an external power source through slip rings, thereby allowing the lower turntable 22 to rotate continuously without interrupting the power supply.

[0049] like Figures 1 to 4 , Figure 8 and Figure 9 As shown: The top of the reaction tank 1 is provided with a drive shaft 11 for driving the upper turntable 21 to rotate, and the lower turntable 22 is provided with a telescopic transmission shaft 12 connected to the drive shaft 11. The ends of the drive shaft 11 and the transmission shaft 12 that are close to each other are provided with a first bevel gear 121, and a second bevel gear 122 that meshes with the two first bevel gears 121 is provided between the two first bevel gears 121.

[0050] A second rotary drive motor 111 is installed at the top of the drive shaft 11 to drive its rotation. After the second rotary drive motor 111 is started, the drive shaft 11 will rotate around the axis of the reaction tank 1. Through the meshing of the first bevel gear 121 at the end of the drive shaft 11 and the second bevel gear 122 in the middle, the power is transmitted to the transmission shaft 12 of the lower turntable 22. The other first bevel gear 121 at the end of the transmission shaft 12 remains meshed with the second bevel gear 122. Even if the transmission shaft 12 extends or retracts with the change in the distance between the upper turntable 21 and the lower turntable 22, the tooth surface contact of the first bevel gear 121 can still ensure continuous power transmission, driving the lower turntable 22 to rotate in opposite directions to the upper turntable 21. This avoids the slippage and wear problems of traditional belt or chain drives during high-speed rotation, and improves the reliability of the equipment during long-term operation. The telescopic function of the drive shaft 12 ensures that the upper turntable 21 and the lower turntable 22 maintain synchronous counter-rotation even when they are relatively close or far apart, ensuring that the stirring blades 211 in the filter chamber 2 continuously generate a counter-shear flow, thereby enhancing the mixing effect of wastewater and flocculant. Furthermore, the aforementioned drive structure saves internal space in the reaction tank 1, and features high transmission efficiency, low noise, and adaptability to corrosive and vibration conditions in fluoride-containing wastewater treatment environments, thus reducing equipment maintenance costs.

[0051] It should be noted that the drive shaft 11 is also a telescopic structure, which is matched with the turntable 21 to slide along the axis of the reaction tank 1.

[0052] like Figure 2 , Figure 4 , Figure 5 , Figures 7 to 10 As shown: the lower turntable 22 has a conical structure, and a discharge port 223 is provided in the center of the lower turntable 22. The reaction tank 1 is provided with a discharge channel 13 corresponding to the discharge port 223.

[0053] The conical structure of the lower turntable 22 causes impurities trapped inside the filter screen 23 after filtration to naturally converge towards the discharge port 223 in the center of the turntable under the combined action of gravity and the centrifugal force of the rotating stirring blades 211. When the upper turntable 21 approaches the lower turntable 22 and compresses the volume of the filter chamber 2, the squeezing action further pushes the impurities towards the discharge port 223, and they are discharged through the corresponding discharge channel 13 on the reaction tank 1. This prevents impurities from accumulating on the surface of the turntable.

[0054] The conical structure of the lower turntable 22 utilizes geometric characteristics to optimize the trajectory of impurities, reducing manual intervention and the risk of filter screen 23 clogging, and improving solid-liquid separation efficiency. The corresponding setting of the discharge port 223 and the discharge channel 13 enables continuous discharge of filtered impurities, adapting to automated processing and avoiding downtime for cleaning. A solenoid valve can be installed on the discharge channel 13 to better manage discharge time and ensure the filtration and mixing effect of wastewater when the volume of the filter chamber 2 changes.

[0055] like Figures 2 to 6 , Figure 9 and Figure 10 As shown: The top of the upper turntable 21 is provided with a lifting plate 14 that is rotatably connected to it, and the lifting plate 14 is provided with a plurality of second electric push rods 141 that are fixedly connected to the top of the reaction tank 1.

[0056] The second electric actuator 141 drives the lifting plate 14 to move up and down along the axis of the reaction tank 1 through its telescopic movement. Since the lifting plate 14 is rotatably connected to the upper turntable 21, the upper turntable 21 can still rotate freely around its own axis while moving axially with the lifting plate 14. This achieves controllable lifting and lowering of the upper turntable 21 during rotation. By adjusting the telescopic stroke of the second electric actuator 141, the distance between the upper turntable 21 and the lower turntable 22 can be precisely controlled, thereby changing the volume of the filter chamber 2. Through the linkage between the second electric actuator 141 and the lifting plate 14, the rotation and lifting movements of the upper turntable 21 are decoupled, achieving precise control over the volume change of the filter chamber 2 and improving the equipment's adaptability to different treatment stages. In the mixing stage, the larger distance, combined with the retraction angle of the stirring blades 211, strengthens the axial circulation flow and promotes thorough mixing of the flocculant and wastewater. In the filtration stage, the smaller distance, combined with the unfolding angle of the stirring blades 211, increases the radial shear force, accelerating the interception and discharge of impurities. The above structure facilitates subsequent installation and maintenance of the equipment. The independent control of the second electric actuator 141 provides an interface for subsequent intelligent upgrades. It can automatically adjust the volume of the filter chamber 2 and the stirring parameters according to water quality monitoring data to optimize the treatment effect.

[0057] like Figures 2 to 6 , Figure 9 and Figure 10 As shown: The center of the lifting plate 14 is provided with a feeding chamber 15, which is rotatably connected to the upper turntable 21. The feeding chamber 15 is provided with a feeding channel 151 that communicates with the inside of the filter chamber 2. The top of the feeding chamber 15 is provided with a water inlet pipe 152 that is connected to the feeding channel 151.

[0058] The inlet pipe 152 transports wastewater and flocculant to the top of the feed chamber 15. Since the feed chamber 15 is rotatably connected to the upper turntable 21 and is fixed in the center of the lifting plate 14, the feed chamber 15 does not rotate with the upper turntable 21. Only the upper turntable 21 rotates around the feed chamber 15, avoiding the risk of twisting and wear caused by the rotation of the inlet pipe 152 with the upper turntable 21, and ensuring the continuity and stability of the feed. The wastewater and flocculant fall vertically into the central area of ​​the filter chamber 2 through the feed channel 151 in the feed chamber 15, avoiding the centrifugal splashing problem caused by the rotation of the upper turntable 21. At the same time, the rotation of the upper turntable 21 drives the stirring blades 211 to form a vortex below the outlet of the feed channel 151, so that the material that has just entered the filter chamber 2 is quickly drawn into the counter-shear flow field, accelerating dispersion and mixing.

[0059] The central arrangement of the feed channel 151 allows materials to directly enter the core area of ​​the flow field, shortening the mixing path. Combined with the dynamic angle adjustment of the stirring blades 211, efficient mixing of reagents and wastewater can be achieved. In addition, this structure separates the feeding system from the rotating parts, reducing the complexity of mechanical coupling, facilitating independent maintenance of the feed channel 151, and improving the overall reliability of the equipment. It is especially suitable for the treatment of fluoride-containing wastewater with high impurity content.

[0060] The filter chamber 2 is equipped with a sensor for detecting the distance between the upper turntable 21 and the lower turntable 22.

[0061] When the distance between the upper turntable 21 and the lower turntable 22 changes due to their lifting motion, a sensor (not shown in the figure) captures the distance data in real time through a sensing element. The back-end control system automatically adjusts the rotation angle of the stirring blade 211 and the volume of the filter chamber 2 according to preset parameters. For example, when the distance decreases to the filtration threshold, the sensor triggers the stirring blade 211 to expand its angle, enhancing the radial shear force; when the distance increases to the mixing threshold, the sensor instructs the stirring blade 211 to retract its angle, strengthening the axial circulation flow.

[0062] The sensor enables precise monitoring and intelligent control of equipment operating parameters, avoiding the lag and errors of manual intervention and making the coordination and matching between various components more efficient. Through real-time feedback, the equipment can adapt to the treatment needs of different water qualities, improving the stability of the treatment effect; at the same time, the sensor's early warning function can prevent mechanical collisions caused by excessive proximity between the upper and lower turntables 21 and 22, protecting the flexible filter screen 23 and the stirring mechanism, and extending the service life of the equipment.

[0063] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A high-efficiency filtration and treatment device for fluoride-containing wastewater, comprising a reaction tank (1), characterized in that, The reaction vessel (1) has a filter chamber (2) with a variable volume in the center. The filter chamber (2) includes an upper rotating disk (21), a lower rotating disk (22), and a filter screen (23). The upper turntable (21) is rotatably mounted on the top of the reaction tank (1), and the upper turntable (21) can rotate downwards along the axis of the reaction tank (1) towards the lower turntable (22); The lower turntable (22) is rotatably mounted at the bottom of the reaction vessel (1); The filter (23) is located between the outer periphery of the upper turntable (21) and the lower turntable (22), and the filter (23) is made of flexible material; Multiple stirring blades (211) are provided on opposite sides of the upper turntable (21) and the lower turntable (22), and the rotation directions of the upper turntable (21) and the lower turntable (22) are opposite. The angles of multiple stirring blades (211) on the upper turntable (21) and the lower turntable (22) can be adjusted, and the adjustment angle of the stirring blades (211) can be adjusted synchronously with the change in the distance between the upper turntable (21) and the lower turntable (22). The stirring blades (211) of the upper turntable (21) are all rotatably connected to it. The upper turntable (21) is provided with a first slide rail (212) that is the same number as the stirring blades (211) and corresponds to them one by one. The first slide rail (212) is inclined. The first slide rail (212) is provided with a first slider (2121) that slides with it. A connecting rod (2122) is provided between the first slider (2121) and the stirring blades (211). The two ends of the connecting rod (2122) are respectively hinged to the first slider (2121) and the stirring blades (211). The top of the upper turntable (21) is also provided with a drive disk (213) rotatably connected thereto and a first rotary drive motor (2131) for driving the drive disk (213) to rotate. The drive disk (213) is provided with a second slide rail (2132) corresponding to the first slide rail (212). The second slide rail (2132) extends radially along the drive disk (213), and the first slider (2121) simultaneously slides in cooperation with the second slide rail (2132). The stirring blades (211) of the lower turntable (22) are all rotatably connected to it. The stirring blades (211) are provided with a third slide rail (221) and a second slider (2211) that can slide on the third slide rail (221). The lower turntable (22) is provided with a first electric push rod (222) that can extend and retract in the vertical direction below the stirring blades (211). The first electric push rod (222) is hinged to the second slider (2211). A sensor for detecting the distance between the upper turntable (21) and the lower turntable (22) is installed inside the filter chamber (2); When the distance between the upper turntable (21) and the lower turntable (22) changes due to the lifting action, the sensor captures the distance data in real time through the sensing element. The back-end control system automatically adjusts the rotation angle of the stirring blade (211) and the volume of the filter chamber (2) according to the preset parameters. When the distance is reduced to the filtration threshold, the sensor triggers the stirring blade (211) to expand its angle and enhance the radial shear force. When the distance is increased to the mixing threshold, the sensor instructs the stirring blade (211) to close its angle and strengthen the axial circulation flow.

2. The high-efficiency filtration treatment equipment for fluoride-containing wastewater according to claim 1, characterized in that, The top of the reaction tank (1) is provided with a drive shaft (11) for driving the upper turntable (21) to rotate. The lower turntable (22) is provided with a telescopic transmission shaft (12) connected to the drive shaft (11). The drive shaft (11) and the transmission shaft (12) are each provided with a first bevel gear (121) at one end close to each other. A second bevel gear (122) is provided between the two first bevel gears (121) and meshes with the two first bevel gears (121).

3. The high-efficiency filtration treatment equipment for fluoride-containing wastewater according to claim 1, characterized in that, The lower turntable (22) has a conical structure and a discharge port (223) is provided in the center of the lower turntable (22). The reaction tank (1) is provided with a discharge channel (13) corresponding to the discharge port (223).

4. The high-efficiency filtration treatment equipment for fluoride-containing wastewater according to claim 2, characterized in that, The top of the upper turntable (21) is provided with a lifting plate (14) that is rotatably connected to it. The lifting plate (14) is provided with multiple second electric push rods (141) that are fixedly connected to the top of the reaction vessel (1).

5. The high-efficiency filtration treatment equipment for fluoride-containing wastewater according to claim 4, characterized in that, The center of the lifting plate (14) is provided with a feeding chamber (15), which is rotatably connected to the upper turntable (21). The feeding chamber (15) is provided with a feeding channel (151) that communicates with the inside of the filter chamber (2). The top of the feeding chamber (15) is provided with a water inlet pipe (152) that is connected to the feeding channel (151).

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