A fluorine-containing water treatment device and method for preventing calcium fluoride scale

Abstract

This invention discloses a fluoride-containing water treatment device for preventing calcium fluoride scale, comprising a water pipe assembly, a feeding assembly, a first rotating disc assembly, a second rotating disc assembly, a filter element, a switching assembly, and a dissolving assembly. The water pipe assembly includes an inlet pipe, an outlet pipe, and a connecting reaction water pipe. The feeding assembly includes a feeding bin, a rotating shaft, a mesh cylinder, and a feeding tube; the feeding bin stores calcium oxide powder. The first rotating disc assembly includes a first rotating disc shell and a first rotating disc, the first rotating disc being located within the first rotating disc shell, and its surface is provided with filter holes. The dissolving assembly includes a dissolving chamber storing a solution for dissolving calcium fluoride. This invention actively forms calcium fluoride crystals by adding calcium oxide into the reaction water pipe, and then removes these crystals using a filter element, significantly reducing the amount of fluoride ions in the water. This prevents the formation of calcium fluoride scale in subsequent pipelines and other equipment, ensuring the normal operation of various water treatment equipment.

Description

Technical Field

[0001] This invention relates to the field of water treatment equipment, and more particularly to a fluoride-containing water treatment device and method for preventing calcium fluoride scale. Background Technology

[0002] The manufacturing processes in industries such as semiconductors and electronics generate large amounts of fluorinated industrial waste gas. When using scrubbing towers to treat this waste gas, fluoride ions are introduced into the circulating water. These fluoride ions readily combine with calcium ions in the water to form calcium fluoride scale, ultimately leading to increasingly severe scaling problems on various components of the scrubbing tower, such as nozzles, packing, pipes, and pumps. This causes a gradual decrease in the flow rate of the circulating water, seriously affecting the efficiency of the entire waste gas treatment system. Current technologies sometimes incorporate reverse osmosis membranes into the circulating water pipeline to help isolate ions in the water; however, the surface of the reverse osmosis membrane itself still scales, requiring frequent replacement and incurring high labor and material costs. Summary of the Invention

[0003] The technical problem to be solved by this invention is that fluoride-containing water in the prior art easily forms calcium fluoride scale in various parts of the equipment, which leads to a decrease in the working efficiency of the equipment and affects industrial production.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: a fluoride-containing water treatment device for preventing calcium fluoride scale, comprising a water pipe assembly, a feeding assembly, a first rotating disk assembly, a second rotating disk assembly, a filter element, a switching assembly, and a dissolving assembly; The water pipe assembly includes an inlet pipe, an outlet pipe, and a reaction water pipe connecting the inlet pipe and the outlet pipe; The feeding assembly includes a feeding bin, a rotating shaft, a mesh cylinder, and a feeding tube. One end of the feeding bin is funnel-shaped, and the other end is tubular and inserted into the reaction water pipe. The tubular end of the feeding bin is provided with a first leakage hole. A hollow guide post is provided in the feeding bin. One end of the rotating shaft is inserted into the guide post and connected to the feeding tube. The feeding tube is located in the inner cavity of the reaction water pipe, and a feeding groove is provided on the surface of the feeding tube. The mesh cylinder is fixedly installed inside the feeding tube, and a second leakage hole is provided on the surface of the mesh cylinder. The mesh cylinder is sleeved outside the tubular end of the feeding bin. Calcium oxide powder is stored in the feeding bin, and the calcium oxide powder reacts with fluoride-containing water to form calcium fluoride. The first turntable assembly includes a first turntable housing and a first rotating disk. The first rotating disk is located inside the first turntable housing. The surface of the first rotating disk is provided with filter holes, and a magnetic ring is provided around the filter element. The filter element is attracted to the filter holes of the first rotating disk by the magnetic ring. The first turntable housing is provided with a filtration station and two first switching stations. When the first rotating disk rotates, it drives the filter element to move between the filtration station and the first switching stations. The reaction water pipe is interrupted in the middle, and the filtration station is located at the interruption point, below the feeding cylinder. The second turntable assembly includes a second turntable housing and a second rotating disk. The second rotating disk is located inside the second turntable housing, and its surface is also provided with filter holes. The filter element is attracted to the filter holes of the second rotating disk by a magnetic ring. The second turntable housing is provided with a dissolution station and two second switching stations. When the second rotating disk rotates, it drives the filter element to move between the dissolution station and the second switching station. The two second switching stations are respectively aligned vertically with the two first switching stations. The switching assembly drives the filter element to transfer between the first switching stations and the second switching stations. The dissolving component includes a dissolving chamber containing a dissolving solution for dissolving calcium fluoride. Generally, an acidic solution such as sulfuric acid is used as the dissolving solution for calcium fluoride. The dissolving station is located inside the dissolving chamber.

[0005] In operation, the fluoride-containing water treatment device of this invention rotates the feeding cylinder and the screen cylinder via a rotating shaft. Since the tubular end of the feeding hopper has a first leakage hole and the surface of the screen cylinder has a second leakage hole, the second leakage hole periodically aligns and staggers with the first leakage hole as the screen cylinder rotates. When the second leakage hole aligns with the first leakage hole, a small amount of calcium oxide powder in the feeding hopper passes through the first and second leakage holes into the feeding cylinder, and then enters the reaction water pipe from the feeding trough of the feeding cylinder, reacting with the fluoride-containing water to generate… Calcium fluoride is produced; the calcium fluoride produced is filtered by the filter element below and retained on the filter element; then, the first rotating disk rotates and brings the filter element to the first switching station, and the switching component pushes the filter element onto the second rotating disk in the second switching station; the second rotating disk rotates and brings the filter element to the dissolution station, where the calcium fluoride dissolves in the dissolving solution; after the calcium fluoride on the filter element has dissolved, the second rotating disk rotates and brings the filter element to the second switching station, and the switching component pushes the filter element onto the first rotating disk in the first switching station to continue the next filtration of calcium fluoride.

[0006] Furthermore, a nozzle is provided at the feeding trough of the feeding cylinder, and a valve plate is provided inside the nozzle. The valve plate is hinged to the nozzle through hinge shafts at both ends, and a torsion spring is provided at the hinge. The torsion spring controls the valve plate to be normally closed. The valve plate will only open due to inertia when the feeding cylinder rotates.

[0007] Furthermore, the feeding assembly also includes a motor, a belt, and a pulley assembly, with the motor driving the rotating shaft to rotate via the belt and pulley assembly.

[0008] To accelerate the dissolution of calcium fluoride in the solution, the dissolution assembly also includes an upper electrode, a lower electrode, and an electromagnetic wave generator installed inside the dissolution chamber. The upper electrode is located inside the dissolution chamber and aligned with the dissolution station, while the lower electrode is installed at the bottom of the dissolution chamber. A coil is installed inside the electromagnetic wave generator. An external power source supplies a varying current to the coil, causing it to generate electromagnetic waves within the enclosed dissolution chamber. Inside the enclosed dissolution chamber, the discharge from the upper and lower electrodes, along with the electromagnetic waves generated by the electromagnetic wave generator, work together to promote the calcium fluoride to break down into smaller powders, rapidly enter the dissolution chamber, and gradually dissolve.

[0009] Furthermore, the fluoride-containing water treatment device also includes a cleaning assembly, which includes a cleaning water tank, a water pump, and a cleaning pipe. The first turntable housing is also provided with a cleaning station. When the first turntable rotates, it drives the filter element to move between the filtration station, the first switching station, and the cleaning station. The cleaning pipe is connected to the cleaning station, and the water pump drives the water in the cleaning water tank to flush the filter element in the cleaning station. The cleaning assembly is mainly used to clean any residual solution on the filter element.

[0010] Specifically, the switching assembly includes a bracket, an electric push rod, and a push head. The electric push rod is mounted on the bracket, and the push head is connected to the telescopic rod of the electric push rod. In this invention, two sets of first and second switching stations aligned with each other are provided. A switching assembly is provided at each of the aligned first and second switching stations. The push head in the switching assembly is aligned with the filter element in the first and second switching stations. There are two switching assemblies, one of which is used to push the filter element from the first switching station to the second switching station, and the other is used to push the filter element from the second switching station to the first switching station.

[0011] Furthermore, a discharge electrode is installed inside the water outlet pipe. The discharge electrode discharges to the water in the water outlet pipe. The current causes the residual salt ions in the water to tend to disperse, preventing them from accumulating on the device wall and reducing scale buildup in the water outlet pipe.

[0012] The present invention also provides a fluoride water treatment method using the above-mentioned fluoride water treatment device for preventing calcium fluoride scale, comprising the following steps: Step 1: Introduce the fluoride-containing water to be treated into the inlet pipe; Step 2: Start the rotating shaft to drive the feeding cylinder and screen cylinder to rotate. The calcium oxide powder in the feeding hopper enters the reaction water pipe through the first leakage hole, the second leakage hole and the nozzle, and reacts with the fluoride-containing water to generate calcium fluoride; the calcium fluoride is filtered by the filter element and retained on the filter element. Step 3: The first rotary table rotates to bring the filter element to the first switching station, and the electric push rod drives the push head to push the filter element onto the second rotary table in the second switching station; Step 4: The second rotating disk rotates to bring the filter element to the dissolution station. In the closed dissolution chamber, the discharge of the upper and lower electrodes and the electromagnetic waves generated by the electromagnetic wave generator work together to promote the calcium fluoride to break into smaller powders and quickly enter the dissolution solution, where it gradually dissolves. Step 5: The second rotary table rotates to bring the filter element to the second switching station, and the electric push rod drives the push head to push the filter element onto the first rotary table in the first switching station; Step 6: The first rotating disc rotates to bring the filter element to the cleaning station. The water pump drives the water in the cleaning tank to flush the filter element in the cleaning station. The clean filter element is used to filter calcium fluoride in the reaction water pipe for the next time.

[0013] Beneficial effects: (1) The fluoride-containing water treatment device of the present invention for preventing calcium fluoride scale actively forms calcium fluoride crystals by adding calcium oxide in the reaction water pipe and removing the calcium fluoride crystals by using the filter element, thereby greatly reducing the number of fluoride ions in the water and preventing the formation of calcium fluoride scale in subsequent pipelines and other equipment, thus ensuring the normal operation of various water treatment equipment. (2) The fluoride-containing water treatment device of the present invention for preventing calcium fluoride scale uses a rotating screen cylinder and a feeding cylinder in conjunction with a feeding bin with a leakage hole to achieve the gradual feeding of calcium oxide. At the same time, the rotating feeding cylinder also has a stirring effect, which promotes the crystallization of calcium ions and fluoride ions in the reaction water pipe. (3) The fluoride-containing water treatment device of the present invention for preventing calcium fluoride scale uses two rotating disk assemblies to realize the automatic switching and cleaning of the filter element, ensuring the automated and efficient operation of the entire fluoride-containing water treatment device. (4) The fluoride water treatment device for preventing calcium fluoride scale of the present invention is equipped with an upper electrode, a lower electrode and an electromagnetic wave generator in the dissolution chamber. The current and electromagnetic waves work together to promote the calcium fluoride to break into smaller powders and enter the dissolution liquid quickly and gradually dissolve in the dissolution liquid. Attached Figure Description

[0014] Figure 1 This is a perspective view of the fluoride-containing water treatment device in Example 1.

[0015] Figure 2 This is a cross-sectional view of the water pipe assembly, feeding assembly, and first turntable assembly in Example 1.

[0016] Figure 3 yes Figure 2 Enlarged view of A.

[0017] Figure 4 This is an exploded view of the feeding assembly in Example 1.

[0018] Figure 5 This is a cross-sectional view of the nozzle in Example 1.

[0019] Figure 6This is a structural diagram of the first turntable assembly, the second turntable assembly, the filter element, and the switching assembly in Embodiment 1.

[0020] Figure 7 This is a part drawing of the first rotating disk in Embodiment 1.

[0021] Figure 8 This is a cross-sectional view of the second turntable assembly and the melting assembly in Example 1.

[0022] The components are as follows: 100, water pipe assembly; 110, inlet pipe; 120, outlet pipe; 130, reaction water pipe; 140, discharge electrode; 200, feeding assembly; 210, feeding hopper; 211, first discharge hole; 212, guide post; 220, rotating shaft; 230, screen cylinder; 231, second discharge hole; 240, feeding cylinder; 250, nozzle; 251, valve plate; 260, motor; 270, belt; 280, pulley assembly; 300, first turntable assembly; 310, first turntable shell; 311, filtration station; 312, cleaning station. 313. First switching station; 320. First rotary table; 400. Second rotary table assembly; 410. Second rotary table housing; 411. Dissolving station; 412. Second switching station; 420. Second rotary table; 500. Filter element; 600. Switching assembly; 610. Support; 620. Electric push rod; 630. Push head; 700. Dissolving assembly; 710. Dissolving chamber; 720. Upper electrode; 730. Lower electrode; 740. Electromagnetic wave generator; 800. Cleaning assembly; 810. Cleaning water tank; 820. Water pump; 830. Cleaning pipe. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to specific embodiments. Example

[0024] like Figure 1 As shown, the fluoride-containing water treatment device for preventing calcium fluoride scale in this embodiment includes a water pipe assembly 100, a feeding assembly 200, a first turntable assembly 300, a second turntable assembly 400, a filter element 500, a switching assembly 600, a dissolving assembly 700, and a cleaning assembly 800.

[0025] like Figure 2 As shown, the water pipe assembly 100 includes an inlet pipe 110, an outlet pipe 120, and a reaction water pipe 130 connecting the inlet pipe 110 and the outlet pipe 120. A discharge electrode 140 is provided inside the outlet pipe 120.

[0026] like Figures 2 to 5As shown, the feeding assembly 200 includes a feeding bin 210, a rotating shaft 220, a mesh cylinder 230, a feeding cylinder 240, a nozzle 250, a motor 260, a belt 270, and a pulley set 280. One end of the feeding bin 210 is funnel-shaped, and the other end is tubular and inserted into the reaction water pipe 130. The tubular end of the feeding bin 210 is provided with a first leakage hole 211. A hollow guide post 212 is provided in the feeding bin 210, and one end of the rotating shaft 220 is inserted into the guide post 212. 12 is connected to the feeding cylinder 240. The motor 260 drives the rotating shaft 220 to rotate via the belt 270 and the pulley group 280. The surface of the feeding cylinder 240 is provided with a feeding groove. The mesh cylinder 230 is installed inside the feeding cylinder 240. The surface of the mesh cylinder 230 is provided with a second leakage hole 231. The mesh cylinder 230 is sleeved outside the tubular end of the feeding bin 210. The feeding bin 210 stores calcium oxide powder. The feeding groove of the feeding cylinder 240 is provided with a nozzle 250, such as... Figure 5 As shown, a valve plate 251 is provided inside the nozzle 250. The valve plate 251 is hinged to the nozzle 250 through hinge shafts at both ends, and a torsion spring is provided at the hinge. The torsion spring controls the valve plate 251 to be normally closed. The valve plate 251 will only open due to inertia when the feeding cylinder 240 rotates.

[0027] like Figure 6 and Figure 7 As shown, the first turntable assembly 300 includes a first turntable housing 310 and a first rotating disk 320. The first rotating disk 320 is located inside the first turntable housing 310. The surface of the first rotating disk 320 is provided with filter holes. A magnetic ring is provided around the filter element 500. The filter element 500 is attracted into the filter holes of the first rotating disk 320 by the magnetic ring. The first turntable housing 310 is provided with a filtration station 311, a cleaning station 312 and two first switching stations 313. When the first rotating disk 320 rotates, it drives the filter element 500 to move between the filtration station 311, the first switching station 313 and the cleaning station 312. The reaction water pipe 130 is interrupted in the middle. The filtration station 311 is located at the interruption and is located below the feeding cylinder 240.

[0028] like Figure 6 and Figure 8 As shown, the second turntable assembly 400 includes a second turntable housing 410 and a second rotating disk 420. The second rotating disk 420 is located in the second turntable housing 410. The surface of the second rotating disk 420 is also provided with filter holes. The filter element 500 is attracted into the filter holes of the second rotating disk 420 by a magnetic ring. The second turntable housing 410 is provided with a dissolution station 411 and two second switching stations 412. When the second rotating disk 420 rotates, it drives the filter element 500 to move between the dissolution station 411 and the second switching station 412. The two second switching stations 412 are respectively aligned vertically with the two first switching stations 313.

[0029] like Figure 6As shown, the switching assembly 600 includes a bracket 610, an electric push rod 620, and a push head 630. The electric push rod 620 is mounted on the bracket 610, and the push head 630 is connected to the telescopic rod of the electric push rod 620. In this embodiment, two sets of first switching stations 313 and second switching stations 412 are provided, and a switching assembly 600 is provided at each set of first switching stations 313 and second switching stations 412. The push head 630 in the switching assembly 600 is aligned with the filter element 500 in the first switching station 313 and the second switching station 412. There are two switching assemblies 600, one of which is used to push the filter element 500 from the first switching station 313 to the second switching station 412, and the other is used to push the filter element 500 from the second switching station 412 to the first switching station 313.

[0030] like Figure 8 As shown, the dissolving assembly 700 includes a dissolving chamber 710, an upper electrode 720, a lower electrode 730, and an electromagnetic wave generator 740 installed within the dissolving chamber 710. The dissolving chamber 710 contains a dissolving solution for dissolving calcium fluoride, and a dissolving station 411 is located within the dissolving chamber 710. The upper electrode 720 is located within the dissolving chamber 710 and aligned with the dissolving station 411. The lower electrode 730 is installed at the bottom of the dissolving chamber 710. A coil is installed within the electromagnetic wave generator 740. An external power source supplies a changing current to the coil, causing the coil to generate electromagnetic waves within the enclosed dissolving chamber 710. Within the enclosed dissolving chamber 710, the discharge from the upper electrode 720 and the lower electrode 730, along with the electromagnetic waves generated by the electromagnetic wave generator 740, work together to act on the calcium fluoride on the filter element 500 within the dissolving station 411, promoting the calcium fluoride to break down into smaller powders, quickly enter the dissolving solution, and gradually dissolve within it.

[0031] like Figure 1 As shown, the cleaning assembly 800 includes a cleaning water tank 810, a water pump 820, and a cleaning pipe 830. The cleaning pipe 830 is connected to the cleaning station 312. The water pump 820 drives the water in the cleaning water tank 810 to flush the filter element 500 in the cleaning station 312. The cleaning assembly 800 is mainly used to clean the solvent that may remain on the filter element 500.

[0032] This embodiment of the fluoride water treatment device for preventing calcium fluoride scale primarily removes fluoride ions from the water, thus preventing the formation of calcium fluoride scale inside other equipment. The specific working steps are as follows: Step 1: Pour the fluoride-containing water to be treated into the... Figure 1 The water inlet pipe 110 is shown. Step 2: Start motor 260 to drive shaft 220 to rotate, as follows Figure 2 and Figure 3As shown, the rotating shaft 220 drives the feeding cylinder 240 and the mesh cylinder 230 to rotate. The calcium oxide powder in the feeding bin 210 enters the reaction water pipe 130 through the first leakage hole 211, the second leakage hole 231 and the nozzle 250, and reacts with the fluorinated water to generate calcium fluoride. The calcium fluoride is filtered by the filter element 500 and remains on the filter element 500. Step 3: The first rotating disk 320 rotates to bring the filter element 500 to the first switching station 313, and the electric push rod 620 drives the push head 630 to push the filter element 500 onto the second rotating disk 420 in the second switching station 412. Step 4: The second rotating disk 420 rotates to bring the filter element 500 to the dissolution station 411. In the closed dissolution chamber 710, the upper electrode 720 and the lower electrode 730 discharge and the electromagnetic waves generated by the electromagnetic wave generator 740 work together to promote the calcium fluoride to break into smaller powders and quickly enter the dissolution liquid and gradually dissolve in the dissolution liquid. Step 5: The second rotating disk 420 rotates to bring the filter element 500 to the second switching station 412, and the electric push rod 620 drives the push head 630 to push the filter element 500 onto the first rotating disk 320 in the first switching station 313. Step 6: The first rotating disk 320 rotates to bring the filter element 500 to the cleaning station 312. The water pump 820 drives the water in the cleaning water tank 810 to flush the filter element 500 in the cleaning station 312. The clean filter element 500 is used to filter calcium fluoride in the reaction water pipe 130 for the next time.

[0033] Although embodiments of the present invention have been described in the specification, these embodiments are merely illustrative and should not be construed as limiting the scope of protection of the present invention. Various omissions, substitutions, and modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A fluoride-containing water treatment device for preventing calcium fluoride scale, characterized in that: It includes a water pipe assembly (100), a feeding assembly (200), a first turntable assembly (300), a second turntable assembly (400), a filter element (500), a switching assembly (600), and a dissolving assembly (700). The water pipe assembly (100) includes an inlet pipe (110), an outlet pipe (120), and a reaction water pipe (130) connecting the inlet pipe (110) and the outlet pipe (120). The feeding assembly (200) includes a feeding bin (210), a rotating shaft (220), a mesh cylinder (230), and a feeding tube (240). One end of the feeding bin (210) is funnel-shaped, and the other end is tubular and inserted into the reaction water pipe (130). The tubular end of the feeding bin (210) is provided with a first leakage hole (211). A hollow guide post (212) is provided in the feeding bin (210). One end of the rotating shaft (220) is inserted into the guide post (212) and connected to the feeding tube (240). The surface of the feeding tube (240) is provided with a feeding groove. The mesh cylinder (230) is fixedly installed inside the feeding tube (240). The surface of the mesh cylinder (230) is provided with a second leakage hole (231). The mesh cylinder (230) is sleeved outside the tubular end of the feeding bin (210). Calcium oxide powder is stored in the feeding bin (210). The calcium oxide powder reacts with fluoride-containing water to generate calcium fluoride. The first turntable assembly (300) includes a first turntable housing (310) and a first rotating disk (320). The first rotating disk (320) is located in the first turntable housing (310). The surface of the first rotating disk (320) is provided with filter holes. A magnetic ring is provided around the filter element (500). The filter element (500) is attracted to the filter holes of the first rotating disk (320) through the magnetic ring. The first turntable housing (310) is provided with a filtration station (311) and two first switching stations (313). When the first rotating disk (320) rotates, it drives the filter element (500) to move between the filtration station (311) and the first switching stations (313). The reaction water pipe (130) is interrupted in the middle. The filtration station (311) is located at the interruption and is located below the feeding cylinder (240). The second turntable assembly (400) includes a second turntable housing (410) and a second rotating disk (420). The second rotating disk (420) is located in the second turntable housing (410). The surface of the second rotating disk (420) is also provided with filter holes. The filter element (500) is attracted to the filter holes of the second rotating disk (420) by a magnetic ring. The second turntable housing (410) is provided with a dissolution station (411) and two second switching stations (412). When the second rotating disk (420) rotates, it drives the filter element (500) to move between the dissolution station (411) and the second switching station (412). The two second switching stations (412) are respectively aligned vertically with the two first switching stations (313). The switching assembly (600) drives the filter element (500) to transfer between the first switching station (313) and the second switching station (412). The dissolving component (700) includes a dissolving chamber (710) containing a dissolving solution for dissolving calcium fluoride, and the dissolving station (411) is located within the dissolving chamber (710). The dissolution assembly (700) also includes an upper electrode (720) and a lower electrode (730). The upper electrode (720) is located inside the dissolution chamber (710) and aligned with the dissolution station (411). The lower electrode (730) is installed at the bottom of the dissolution chamber (710).

2. The fluoride-containing water treatment device for preventing calcium fluoride scale according to claim 1, characterized in that: The feeding trough of the feeding cylinder (240) is equipped with a nozzle (250).

3. The fluoride-containing water treatment device for preventing calcium fluoride scale according to claim 2, characterized in that: A valve plate (251) is provided inside the nozzle (250). The valve plate (251) is hinged to the nozzle (250) through hinge shafts at both ends, and a torsion spring is provided at the hinge.

4. The fluoride-containing water treatment device for preventing calcium fluoride scale according to claim 3, characterized in that: The feeding assembly (200) also includes a motor (260), a belt (270) and a pulley set (280), wherein the motor (260) drives the rotating shaft (220) to rotate via the belt (270) and the pulley set (280).

5. The fluoride-containing water treatment device for preventing calcium fluoride scale according to claim 4, characterized in that: The dissolving assembly (700) also includes an electromagnetic wave generator (740) installed in the dissolving chamber (710), and a coil is provided in the electromagnetic wave generator (740).

6. The fluoride-containing water treatment device for preventing calcium fluoride scale according to claim 5, characterized in that: It also includes a cleaning assembly (800), which includes a cleaning water tank (810), a water pump (820), and a cleaning pipe (830). A cleaning station (312) is also provided on the first turntable housing (310). When the first turntable (320) rotates, it drives the filter element (500) to move between the filtration station (311), the first switching station (313), and the cleaning station (312). The cleaning pipe (830) is connected to the cleaning station (312). The water pump (820) drives the water in the cleaning water tank (810) to flush the filter element (500) in the cleaning station (312).

7. The fluoride-containing water treatment device for preventing calcium fluoride scale according to claim 6, characterized in that: The switching assembly (600) includes a bracket (610), an electric push rod (620), and a push head (630). The electric push rod (620) is mounted on the bracket (610), and the push head (630) is connected to the telescopic rod of the electric push rod (620).

8. The fluoride-containing water treatment device for preventing calcium fluoride scale according to claim 7, characterized in that: A discharge electrode (140) is installed inside the water outlet pipe (120).

9. A method for treating fluoride-containing water using the fluoride-containing water treatment device for preventing calcium fluoride scale as described in claim 8, characterized in that... Includes the following steps: Step 1: Introduce the fluoride-containing water to be treated into the inlet pipe (110); Step 2: Start the rotating shaft (220) to drive the feeding cylinder (240) and the screen cylinder (230) to rotate. The calcium oxide powder in the feeding bin (210) enters the reaction water pipe (130) through the first leakage hole (211), the second leakage hole (231) and the nozzle (250), and reacts with the fluorinated water to generate calcium fluoride. The calcium fluoride is filtered by the filter element (500) and retained on the filter element (500). Step 3: The first rotating disk (320) rotates to bring the filter element (500) to the first switching station (313), and the electric push rod (620) drives the push head (630) to push the filter element (500) onto the second rotating disk (420) in the second switching station (412); Step 4: The second rotating disk (420) rotates to bring the filter element (500) to the dissolution station (411). In the closed dissolution chamber (710), the upper electrode (720) and the lower electrode (730) discharge and the electromagnetic waves generated by the electromagnetic wave generator (740) work together to promote the calcium fluoride to break into smaller powders and quickly enter the dissolution solution and gradually dissolve in the dissolution solution. Step 5: The second rotating disk (420) rotates to bring the filter element (500) to the second switching station (412), and the electric push rod (620) drives the push head (630) to push the filter element (500) onto the first rotating disk (320) in the first switching station (313); Step 6: The first rotating disk (320) rotates to bring the filter element (500) to the cleaning station (312). The water pump (820) drives the water in the cleaning tank (810) to flush the filter element (500) in the cleaning station (312). The clean filter element (500) is used to filter calcium fluoride in the reaction water pipe (130) next time.

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