Efficient filtration treatment equipment for fluorine-containing wastewater

Abstract

The invention relates to the technical field of wastewater treatment, in particular to fluoride-containing wastewater efficient filtering treatment equipment which comprises a reaction barrel and a filtering cavity formed in the reaction barrel, and the filtering cavity comprises an upper rotating disc, a lower rotating disc and a filtering net; the upper turntable is rotatably arranged at the top of the reaction barrel, and the upper turntable can be close to the lower turntable along the axis direction of the reaction barrel; the lower turntable is rotatably arranged at the bottom of the reaction barrel; the filter screen is arranged between the outer peripheries of the upper turntable and the lower turntable and is made of a flexible material; according to the present invention, the upper rotating disc moves along the axis direction of the reaction barrel, such that the volume of the filtration cavity can be changed, and the integrated filtration cavity structure integrates the mixing process and the filtration process into the single cavity; the functions of flocculant mixing, wastewater impurity filtering and filter screen self-cleaning are achieved through cooperative control of mechanical movement, the equipment process is simplified, the space utilization rate is increased, and the operation and maintenance complexity is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and in particular to a high-efficiency filtration and treatment device for fluorine-containing wastewater. Background Art

[0002] Fluoride-containing wastewater is widely derived from the chemical, metallurgical, and electronic industries, and its treatment technology is directly related to environmental protection and resource recovery. Chemical precipitation has become one of the mainstream fluoride-containing wastewater treatment processes due to its simple operation and controllable cost. Its core principle is to add chemical reagents such as calcium salts and aluminum salts to react with fluoride ions to form insoluble precipitates (such as CaF2 and AlF3), and then remove fluoride ions through solid-liquid separation. However, when treating high-viscosity fluoride-containing wastewater, chemical reagents are difficult to diffuse quickly, and local concentration gradients are easily formed, resulting in insufficient fluoride ion reaction; traditional stirring equipment (such as paddle and turbine stirrers) have insufficient shear force on viscous fluids and a single mixing path. Especially when treating wastewater containing flocculent suspended matter, stirring dead zones are prone to occur, which prolongs the reaction time and reduces precipitation efficiency.

[0003] Chinese Patent Authorization Publication No. CN118894582B discloses a method and apparatus for treating fluorine-containing wastewater, comprising a reaction chamber with a dispersion mechanism disposed in the middle of the reaction chamber. The dispersion mechanism comprises an upper turntable and a lower turntable, the lower turntable being movably connected to the bottom of the upper turntable. A plurality of first mesh plates and blades are disposed circumferentially on the upper circumference of the lower turntable. Air inlet mechanisms are disposed on the upper and lower turntables, and an air outlet nozzle is rotatably mounted on the lower turntable. This patent utilizes the rotation of the first mesh plate and the extrusion of air from an airbag to promote mixing. However, the lower turntable relies on the contact between a roller and an inclined block for reciprocating movement. In highly viscous or suspended wastewater, this can be prone to blockage due to impurities and component wear, causing movement and stalling, thus affecting the stability of the mixing flow field. Furthermore, the blades are fixedly connected to the first mesh plate, preventing the stirring angle from being dynamically adjusted based on water quality. This lacks shear force adaptability for wastewaters of varying viscosities, and can easily lead to the formation of a stirring dead zone. This can result in residual flocculent sediment, which can affect the treatment effect. Furthermore, the patent lacks a real-time monitoring and feedback adjustment mechanism for water quality parameters, making it difficult to automatically optimize the balance between mixing efficiency and energy consumption under different operating conditions.

[0004] Invention application content

[0005] In response to the above problems, a high-efficiency filtration and treatment equipment for fluorine-containing wastewater is provided. By moving the upper turntable along the axial direction of the reaction barrel, the volume of the filter chamber can be changed. The integrated filter chamber structure integrates the mixing and filtration processes into a single cavity. Through the coordinated control of mechanical movement, the functions of flocculant and mixing, wastewater impurity filtration and filter self-cleaning are realized, which simplifies the equipment process, improves space utilization and reduces the complexity of operation and maintenance.

[0006] In order to solve the problems of the existing technology, the present invention provides a high-efficiency filtration and treatment equipment for fluorine-containing wastewater, comprising a reaction barrel, wherein a filter chamber with a variable volume is arranged in the center of the interior of the reaction barrel, and the filter chamber comprises an upper turntable, a lower turntable and a filter screen; the upper turntable is rotatably arranged at the top of the reaction barrel, and the upper turntable can approach the lower turntable along the axial direction of the reaction barrel; the lower turntable is rotatably arranged at the bottom of the reaction barrel; the filter screen is arranged between the outer periphery of the upper turntable and the lower turntable, and the filter screen is made of a flexible material; a plurality of stirring blades are arranged on opposite sides of the upper turntable and the lower turntable, and the rotation directions of the upper turntable and the lower turntable are opposite.

[0007] Preferably, the angles of the multiple stirring blades of the upper turntable and the lower turntable can be adjusted, and the adjustment angles of the stirring blades are adjusted synchronously with the change in the distance between the upper turntable and the lower turntable.

[0008] Preferably, the stirring blades of the upper turntable are all rotatably connected to it, and the upper turntable is provided with first slide rails that are the same in number and one-to-one corresponding to the stirring blades. The first slide rails are inclined, and the first slide rails are provided with first sliders that slide with them. A connecting rod is provided between the first slider and the stirring blades, and the two ends of the connecting rod are respectively hinged to the first slider and the stirring blades.

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

[0010] Preferably, the stirring blades of the lower turntable are rotatably connected to it, and a third slide rail and a second slider that can be slidably arranged on the third slide rail are provided on the stirring blades. A first electric push rod that can be extended and retracted 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, a driving shaft for driving the upper turntable to rotate is provided on the top of the reaction barrel, and a retractable transmission shaft connected to the driving shaft is provided on the lower turntable. The driving shaft and the end of the transmission shaft close to each other are both provided with a first bevel gear, and a second bevel gear meshing with the two first bevel gears is provided between the two first bevel gears.

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

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

[0014] Preferably, a feed cavity is provided in the center of the lifting plate, the feed cavity is rotatably connected to the upper turntable, a feed channel connected to the interior of the filter cavity is provided in the feed cavity, and a water inlet pipe connected to the feed channel is provided at the top of the feed cavity.

[0015] Preferably, a sensor for detecting the distance between the upper turntable and the lower turntable is provided in the filter cavity.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The present invention rotates the upper turntable around the axis of the reaction barrel, and at the same time approaches the lower turntable along the axis of the reaction barrel. The lower turntable will then rotate synchronously around the axis of the reaction barrel. Since stirring blades are provided on opposite sides of the upper and lower turntables, the stirring blades will rotate with the upper and lower turntables, driving the wastewater in the filter chamber to form a counter-shear flow, so that the additive and the fluorine-containing wastewater form a high-intensity turbulent mixing in the filter chamber, significantly improving the dispersion efficiency of the additive, shortening the mixing time of the additive and the wastewater, and enhancing the adequacy of the reaction. The integrated filter chamber structure integrates the mixing and filtration processes into a single chamber, and realizes the functions of flocculant mixing, wastewater impurity filtration, and filter self-cleaning through the coordinated control of mechanical motion, thereby simplifying the equipment process, improving space utilization, and reducing the complexity of operation and maintenance.

[0018] 2. In the present invention, when the upper turntable approaches or moves away from the lower turntable along the axial direction, the distance between the upper turntable and the lower turntable will change. At this time, the multiple stirring blades on the upper turntable and the lower turntable are adjusted synchronously, avoiding the limitations of the stirring blades with fixed angles, and significantly improving the adaptability of the equipment to wastewater of different concentrations. At the same time, through the periodic angle change of the stirring blades, the flexible filter screen is assisted to achieve self-cleaning, reducing the deposition and clogging of impurities on the surface of the filter screen, and ensuring the continuity and efficiency of the treatment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural diagram of a high-efficiency filtration and treatment equipment for fluorine-containing wastewater.

[0020] Figure 2 The present invention is a schematic diagram of the cross-sectional structure of a filter cavity in a high-efficiency filtration and treatment device for fluorine-containing wastewater when the filter cavity is not squeezed.

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

[0022] Figure 4 The present invention is a schematic diagram of the three-dimensional cross-sectional structure of a filtration cavity in a high-efficiency filtration treatment device for fluorine-containing wastewater when the filtration cavity is not squeezed.

[0023] Figure 5 It is a three-dimensional structural diagram of the upper turntable and the lower turntable in a high-efficiency filtration and treatment equipment for fluorine-containing wastewater.

[0024] Figure 6 It is a three-dimensional structural diagram of a drive disc and an upper turntable in a high-efficiency filtration and treatment device for fluorine-containing wastewater.

[0025] Figure 7 This is a schematic diagram of the three-dimensional structure of the lower turntable in a high-efficiency filtration and treatment equipment for fluorine-containing wastewater. Figure 1 .

[0026] Figure 8 This is a schematic diagram of the three-dimensional structure of the lower turntable in a high-efficiency filtration and treatment equipment for fluorine-containing wastewater. Figure 2 .

[0027] Figure 9 The present invention is a schematic diagram of the cross-sectional structure of a filter cavity during extrusion in a high-efficiency filtration and treatment device for fluorine-containing wastewater.

[0028] Figure 10 The present invention is a schematic diagram of the three-dimensional cross-sectional structure of a filter cavity when it is squeezed in a high-efficiency filtration and treatment device for fluorine-containing wastewater.

[0029] The numbers in the figure are:

[0030] 1. Reaction barrel; 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 DESCRIPTION

[0031] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in 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 and treatment equipment for fluorine-containing wastewater, including a reaction barrel 1, a filter chamber 2 with a variable volume is provided in the center of the reaction barrel 1, and the filter chamber 2 includes an upper turntable 21, a lower turntable 22 and a filter screen 23; the upper turntable 21 is rotatably provided at the top of the reaction barrel 1, and the upper turntable 21 can approach the lower turntable 22 along the axial direction of the reaction barrel 1; the lower turntable 22 is rotatably provided at the bottom of the reaction barrel 1; the filter screen 23 is provided between the outer periphery of the upper turntable 21 and the lower turntable 22, and the filter screen 23 is made of a flexible material; a plurality of stirring blades 211 are provided on opposite sides of the upper turntable 21 and the lower turntable 22, and the upper turntable 21 and the lower turntable 22 rotate in opposite directions.

[0033] When the equipment is in operation, wastewater and additives are first introduced synchronously into the interior of the filter chamber 2. In the initial state, the upper turntable 21 is located at the top of the reaction barrel 1. At this time, the upper turntable 21 is started to rotate around the axis of the reaction barrel 1, and at the same time, it approaches the lower turntable 22 along the axis of the reaction barrel 1. The lower turntable 22 will then rotate synchronously around the axis of the reaction barrel 1. Because the upper turntable 21 and the lower turntable 22 are both provided with stirring blades 211 on opposite sides, the stirring blades 211 will rotate with the upper turntable 21 and the lower turntable 22, driving the wastewater in the filter chamber 2 to form counter-shear flow, so that the additive and the fluorine-containing wastewater form high-intensity turbulent mixing in the filter chamber 2, significantly improving the dispersion efficiency of the additive, shortening the mixing time of the additive and wastewater, and enhancing the adequacy of the reaction.

[0034] The filter screen 23 made of flexible material is sealed and connected between the outer periphery of the upper turntable 21 and the lower turntable 22. The filter screen 23 will produce periodic expansion and contraction deformation as the volume of the filter chamber 2 changes. When the volume of the filter chamber 2 shrinks, the wastewater filtration is accelerated through the extrusion effect, and the impurities are quickly intercepted. When the volume expands, the circulation of the flow field drives the external wastewater to continue to participate in the mixing of additives. At the same time, the deformation of the filter screen 23 will destroy the static deposition state of impurities on its surface, avoid agglomeration 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, and realizes the functions of flocculant mixing, wastewater impurity filtration and filter screen 23 self-cleaning through the coordinated control of mechanical movement, 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 the plurality of stirring blades 211 of the upper turntable 21 and the lower turntable 22 can be adjusted, and the adjustment angles of the stirring blades 211 are 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 approaches or moves 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 synchronously. 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 are expanded, thereby increasing the radial shear force on the wastewater, accelerating the filtration of the wastewater and enhancing 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 blades 211 move closer to one side of the upper turntable 21 and the lower turntable 22, so that the stirring blades 211 are retracted, thereby enhancing the axial flow-pushing effect. The generated axial circulation flow improves the mixing uniformity of the flocculant and the wastewater, thereby enabling the equipment to dynamically adjust the flow field morphology under different volume states.

[0039] The limitations of the fixed-angle stirring blade 211 are avoided, and the adaptability of the equipment to wastewater of different concentrations is significantly improved. At the same time, through the periodic angle change of the stirring blade 211, the flexible filter 23 is assisted to achieve self-cleaning, reducing the deposition and clogging of impurities on the surface of the filter 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, and the upper turntable 21 is provided with first slide rails 212 with the same number and one-to-one corresponding to the stirring blades 211. The first slide rails 212 are inclined, and the first slide rails 212 are provided with first sliders 2121 that slide with them. A connecting rod 2122 is provided between the first slider 2121 and the stirring blades 211, and 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 is reduced or increased, the first slider 2121 slides along the first slide rail 212, so that the connecting rod 2122 can pull the stirring blade 211 hinged to it, so that the stirring blade 211 can rotate around the connection point between it and the upper turntable 21, thereby realizing the reciprocating sliding of the first slider 2121 on the first slide rail 212 to adjust the angle of the stirring blade 211.

[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, so that the stirring blades 211 are expanded, increasing the radial shear force on the wastewater, cooperating with the volume contraction of the filter chamber 2, and accelerating 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, so that the stirring blades 211 are retracted, enhancing the axial flow-pushing effect, and promoting the flocculant and wastewater to be fully mixed in a larger range through the generated axial circulation flow.

[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 driving disk 213 connected to the rotation thereof and a first rotary drive motor 2131 for driving the driving disk 213 to rotate. The driving 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 driving disk 213, and the first slider 2121 slides with the second slide rail 2132 at the same time.

[0044] The first rotary drive motor 2131 drives the drive disc 213 to rotate about the axis of the upper turntable 21. Because the second slide rail 2132 on the drive disc 213 extends radially, and the first slider 2121 slides in cooperation with both the first and second slide rails 212 and 2132, the first slide rail 212 is tilted, allowing the first slider 2121 to slide under the cross-constraint of the first and second slide rails 212 and 2132, thereby driving the connecting rod 2122 connected to the first slider 2121. The connecting rod 2122 pulls or pushes the stirring blade 211 to rotate about its rotational connection with the upper turntable 21, thereby achieving dynamic adjustment of the angle of the stirring blade 211.

[0045] The rotation of the drive disk 213 can be flexibly adjusted by the first rotary drive motor 2131 according to the processing requirements, thereby achieving precise control of the angle change amplitude and response speed of the stirring blade 211, so that the equipment can adapt to wastewater treatment scenarios with different concentrations and different 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 rotatably connected to it, and the stirring blades 211 are provided with a third slide rail 221 and a second slider 2211 that can be slidably set on the third slide rail 221. The lower turntable 22 is provided with a first electric push rod 222 that can be extended and retracted in the vertical direction below the stirring blade 211, and 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 barrel 1, and the first electric push rod 222 extends and retracts in the vertical direction, driving the second slider 2211 to slide on the third slide rail 221 of the stirring blade 211; since the stirring blade 211 is rotationally connected to the lower turntable 22, the sliding of the second slider 2211 causes the stirring blade 211 to swing 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 push rod 222 is synchronously adapted, so that the angle of the stirring blade 211 of the lower turntable 22 changes in coordination with the stirring blade 211 of the upper turntable 21, and the reverse rotation of the upper turntable 21 and the lower turntable 22 is coordinated to build a dynamic flow field in the filter chamber 2. This allows for precise adjustment of the angle of the stirring blades 211 to suit the treatment requirements of varying water qualities. The stirring blades 211 on the lower turntable 22 and upper turntable 21 coordinate their angles, creating a more symmetrical flow field within the filter chamber 2 and enhancing the mixing effect between the flocculant and the wastewater. Changing the angle of the stirring blades 211 also disturbs the surface of the filter screen 23, reducing impurity clogging and extending its life.

[0048] It should be noted that the first electric push rods 222 will rotate synchronously with the lower turntable 22. The multiple first electric push rods 222 are electrically connected to the external power supply through the slip ring, thereby allowing the lower turntable 22 to continue rotating without interrupting the power supply.

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

[0050] A second rotary drive motor 111 is provided 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 rotates around the axis of the reaction barrel 1. The first bevel gear 121 at the end of the drive shaft 11 engages with the second bevel gear 122 in the middle, transmitting power to the transmission shaft 12 of the lower turntable 22. Another first bevel gear 121 at the end of the transmission shaft 12 remains in meshing with the second bevel gear 122. Even if the transmission shaft 12 expands and contracts with the change in the spacing 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 and the upper turntable 21 to achieve opposite rotation. This avoids the slippage and wear problems of traditional belt or chain transmission during high-speed rotation, and improves the reliability of the equipment in long-term operation. The telescopic function of the drive shaft 12 enables the upper and lower turntables 21 and 22 to maintain synchronous counter-rotation even when they are moving closer or farther apart. This ensures that the stirring blades 211 within the filter chamber 2 continuously form counter-shear flows, enhancing the mixing effect between the wastewater and the flocculant. Furthermore, this transmission structure saves internal space in the reaction tank 1, offers high transmission efficiency and low noise, and is adaptable to the corrosive and vibration conditions found in fluorine-containing wastewater treatment environments, reducing equipment maintenance costs.

[0051] It should be noted that the driving shaft 11 is also a telescopic structure, and the turntable 21 slides along the axial direction of the reaction barrel 1 through the telescopic structure.

[0052] like Figure 2 、 Figure 4 、 Figure 5 、 Figures 7 to 10 As shown, the lower turntable 22 is a conical structure, a discharge port 223 is provided at the center of the lower turntable 22 , and a discharge channel 13 corresponding to the discharge port 223 is provided on the reaction barrel 1 .

[0053] The conical structure of the lower turntable 22 allows impurities trapped inside the filter screen 23 after filtration to naturally converge toward the discharge port 223 in the center of the turntable under the combined effects of gravity and the centrifugal force of the 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 toward the discharge port 223 and is discharged through the corresponding discharge channel 13 on the reaction barrel 1, preventing impurities from accumulating on the turntable surface.

[0054] The tapered structure of lower turntable 22 utilizes geometric properties to optimize the trajectory of impurities, reducing the risk of manual intervention and clogging of filter screen 23, thereby improving solid-liquid separation efficiency. The corresponding arrangement of discharge port 223 and 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 discharge channel 13 to better manage discharge timing and ensure effective filtration and mixing of wastewater as the volume of filter chamber 2 changes.

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

[0056] The second electric push rod 141 drives the lifting plate 14 up and down along the axis of the reaction barrel 1 through a telescopic motion. Because the lifting plate 14 is rotatably connected to the upper turntable 21, the upper turntable 21 can move axially with the lifting plate 14 while still rotating freely about its own axis. This allows for controlled lifting and lowering of the upper turntable 21 during its rotation. By adjusting the telescopic stroke of the second electric push rod 141, the spacing between the upper turntable 21 and the lower turntable 22 can be precisely controlled, thereby varying the volume of the filter chamber 2. The linkage between the second electric push rod 141 and the lifting plate 14 decouples the rotation and lifting motion of the upper turntable 21, enabling precise control of changes in the volume of the filter chamber 2 and improving the device's adaptability to different treatment stages. During the mixing stage, the larger spacing, combined with the retraction angle of the stirring blades 211, enhances axial circulation and promotes thorough mixing of the flocculant and wastewater. During the filtration stage, the smaller spacing, combined with the expansion angle of the stirring blades 211, increases radial shear force, accelerating impurity retention and removal. The above structure facilitates the subsequent installation and maintenance of the equipment. The independent control of the second electric push rod 141 provides an interface for subsequent intelligent upgrades, and can automatically adjust the volume and stirring parameters of the filter chamber 2 according to water quality monitoring data to optimize the treatment effect.

[0057] like Figures 2 to 6 、 Figure 9 and Figure 10 As shown: a feed chamber 15 is provided in the center of the lifting plate 14, the feed chamber 15 is rotatably connected to the upper turntable 21, a feed channel 151 connected to the interior of the filter chamber 2 is provided in the feed chamber 15, and a water inlet pipe 152 connected to the feed channel 151 is provided at the top of the feed chamber 15.

[0058] The water inlet pipe 152 transports the 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 to 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 distortion and wear of the water inlet pipe 152 caused by the rotation of the upper turntable 21, and ensuring the continuity and stability of the feed. The wastewater and flocculant fall vertically into the center 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 placement of feed channel 151 allows materials to enter the core flow field directly, shortening the mixing path. Combined with the dynamic angle adjustment of the stirring blades 211, this allows for efficient mixing of the reagent and wastewater. Furthermore, this structure separates the feed system from the rotating components, reducing the complexity of mechanical coupling and facilitating independent maintenance of feed channel 151, improving overall equipment reliability. This makes it particularly suitable for treating fluoride-containing wastewater with high impurity content.

[0060] A sensor for detecting the distance between the upper turntable 21 and the lower turntable 22 is provided in the filter chamber 2 .

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

[0062] This sensor enables precise monitoring and intelligent control of the equipment's operating parameters, avoiding the lag and errors associated with manual intervention and ensuring more efficient coordination between components. Through real-time feedback, the equipment can adapt to the treatment requirements of varying water qualities, improving the stability of treatment results. Furthermore, the sensor's early warning function prevents mechanical collisions caused by the upper and lower turntables 21 and 22 coming too close, protecting the flexible filter 23 and agitator mechanism and extending the equipment's service life.

[0063] The above embodiments merely represent one or more embodiments 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 a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, and such modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the appended claims.

Claims

1. A high-efficiency filtration and treatment device for fluorine-containing wastewater, comprising a reaction barrel (1), characterized in that: A filter chamber (2) with a variable volume is provided in the center of the reaction barrel (1), and the filter chamber (2) includes an upper turntable (21), a lower turntable (22) and a filter screen (23); The upper turntable (21) is rotatably arranged on the top of the reaction barrel (1), and the upper turntable (21) can move closer to the lower turntable (22) along the axis of the reaction barrel (1); The lower turntable (22) is rotatably arranged at the bottom of the reaction barrel (1); The filter screen (23) is arranged between the outer peripheries of the upper turntable (21) and the lower turntable (22), and the filter screen (23) is made of a flexible material; A plurality of stirring blades (211) are provided on opposite sides of the upper turntable (21) and the lower turntable (22), and the upper turntable (21) and the lower turntable (22) rotate in opposite directions.

2. The high-efficiency filtration and treatment equipment for fluorine-containing wastewater according to claim 1, characterized in that: The angles of the plurality of stirring blades (211) of the upper turntable (21) and the lower turntable (22) can be adjusted, and the adjustment angles of the stirring blades (211) are synchronously and linkedly adjusted with the change in the spacing between the upper turntable (21) and the lower turntable (22).

3. The high-efficiency filtration and treatment equipment for fluorine-containing wastewater according to claim 2, characterized in that: The stirring blades (211) of the upper turntable (21) are all rotatably connected thereto. The upper turntable (21) is provided with first slide rails (212) having the same number as the stirring blades (211) and corresponding one to one. The first slide rails (212) are inclined. The first slide rails (212) are provided with first sliders (2121) that slide with the first slide rails (212). 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).

4. The high-efficiency filtration and treatment equipment for fluorine-containing wastewater according to claim 3, characterized in that: The top of the upper turntable (21) is also provided with a driving disk (213) rotatably connected thereto and a first rotary drive motor (2131) for driving the driving disk (213) to rotate. The driving 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 driving disk (213). The first slider (2121) is simultaneously slidably engaged with the second slide rail (2132).

5. The high-efficiency filtration and treatment equipment for fluorine-containing wastewater according to claim 2, characterized in that: The stirring blades (211) of the lower turntable (22) are all rotatably connected thereto, a third slide rail (221) and a second slider (2211) slidably arranged on the third slide rail (221) are provided on the stirring blade (211), and a first electric push rod (222) that can be extended and retracted in a vertical direction is provided on the lower turntable (22) below the stirring blade (211), and the first electric push rod (222) is hinged to the second slider (2211).

6. The high-efficiency filtration and treatment equipment for fluorine-containing wastewater according to claim 1, characterized in that: A driving shaft (11) for driving the upper turntable (21) to rotate is provided on the top of the reaction barrel (1), a retractable transmission shaft (12) connected to the driving shaft (11) is provided on the lower turntable (22), a first bevel gear (121) is provided at one end of the driving shaft (11) and the transmission shaft (12) close to each other, and a second bevel gear (122) meshingly connected to the two first bevel gears (121) is provided between the two first bevel gears (121).

7. The high-efficiency filtration and treatment equipment for fluorine-containing wastewater according to claim 5, characterized in that: The lower turntable (22) is a conical structure. A discharge port (223) is provided at the center of the lower turntable (22). A discharge channel (13) corresponding to the discharge port (223) is provided on the reaction barrel (1).

8. The high-efficiency filtration and treatment equipment for fluorine-containing wastewater according to claim 6, characterized in that: A lifting plate (14) rotatably connected to the upper turntable (21) is provided on the top of the upper turntable (21), and a plurality of second electric push rods (141) fixedly connected to the top of the reaction barrel (1) are provided on the lifting plate (14).

9. The high-efficiency filtration and treatment equipment for fluorine-containing wastewater according to claim 8, characterized in that: A feed chamber (15) is provided at the center of the lifting plate (14), the feed chamber (15) being rotatably connected to the upper turntable (21), a feed channel (151) communicating with the interior of the filter chamber (2) being provided in the feed chamber (15), and a water inlet pipe (152) connected to the feed channel (151) being provided at the top of the feed chamber (15).

10. The high-efficiency filtration and treatment equipment for fluorine-containing wastewater according to any one of claims 2 to 9, characterized in that: A sensor for detecting the distance between the upper turntable (21) and the lower turntable (22) is provided in the filter cavity (2).

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