A water-soluble ammonium phosphate fluoride ion exchange device

Abstract

This invention relates to the field of fluoride ion removal technology, specifically disclosing a water-soluble ammonium phosphate fluoride ion replacement device, including a support base, a defluorination tank mounted on the base, and a conveying component installed on the defluorination tank. The defluorination tank includes a tank body, the bottom of which is erected on the base by a support frame. Through the combination of the defluorination tube and the conveying component, the liquid requiring defluorination can be introduced into the defluorination tank during use. In the defluorination tank, fluoride ions can be adsorbed using an ion exchange component located on the inner side and filled with ion exchange resin. During use, a through-hole on the outer side of the inner ring, combined with a filter plate, forms a sealed space inside the inner ring. The liquid is then introduced through a combination of a sealing cap and an extension tube. Simultaneously, the conveying component can pressurize the conveyed liquid, improving the defluorination efficiency.

Description

Technical Field

[0001] This invention relates to the field of fluoride ion removal technology, specifically to a water-soluble ammonium phosphate fluoride ion replacement device. Background Technology

[0002] Water-soluble ammonium phosphate (APP) is a type of fertilizer that can promote plant growth to some extent, but its fluorine content can also have adverse effects on plant growth. Therefore, the purpose of defluorinating water-soluble APP is to reduce its fluorine content and improve its plant-friendly properties. Defluorination treatment makes water-soluble APP more suitable for use as a fertilizer, helping to reduce its adverse effects on plant growth and improve fertilization efficiency.

[0003] Traditional defluorination methods include precipitation, ion exchange, and membrane separation, but each has its own drawbacks. For example, the fluoride precipitate after precipitation needs to be separated and recovered through filtration, centrifugation, and other operations, which is relatively cumbersome. Ion exchange methods use ion exchange resins whose exchange capacity decreases after long-term use. Furthermore, the wastewater and waste generated during the regeneration of ion exchange resins may have an impact on the environment. In contrast, membrane separation methods require careful selection and maintenance of the membrane, which is also costly. Therefore, it is necessary to improve these methods. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a water-soluble ammonium phosphate fluoride ion exchange device, which solves the problem that the use of a single defluorination method in existing technologies makes the maintenance of the recycled materials in the later stages inconvenient.

[0005] The water-soluble ammonium phosphate fluoride ion exchange device of the present invention includes a base for support, a defluorination tank disposed on the base, and a conveying component installed on the defluorination tank; The defluorination tank includes a tank body, the bottom of which is supported on a base by a support frame. A support ring is provided on the inner side of the tank body near the bottom, and an ion exchange assembly is arranged on the top of the support ring. The ion exchange assembly includes a shell, and an integrally formed inner ring is provided on the inner side of the shell. A fixed distance is maintained between the outer side of the inner ring and the inner side of the shell, and the fixed distance is set as an inner cavity. A pressurized cavity is provided on the inner side of the inner ring. The pressurized cavity is filled with ion exchange resin particles, the height of which is at least half of the vertical height of the inner side of the inner ring. The ion exchange resin particles are used to defluorinate fluorine-containing liquids. The outer side of the inner ring is provided with one or more first through holes in a ring shape. A filter plate is provided at the first through hole. The filter plate includes a plate body. A fixing groove is provided on both long sides of the plate body. A sealing element is installed at the fixing groove and is adapted to the first through hole of the inner ring. A sealing groove is provided at the top of the inner ring, and a sealing cover is installed at the sealing groove. The top of the sealing cover is connected to the conveying component through a seal.

[0006] As a further improvement of the present invention, the conveying component includes a support plate, the bottom of which is adapted to the base, and one or more connecting pipes are mounted on the outer side of the support plate, one end of which extends to the inner side of the tank and is located at the top of the sealing cap.

[0007] As a further improvement of the present invention, a discharge pipe is provided on one side of the support plate near the bottom, and one end of the discharge pipe extends to the bottom of the tank.

[0008] As a further improvement of the present invention, a discharge port is provided at the bottom of the tank body, the discharge port is adapted to the discharge pipe, a fixing member is provided on the inner side of the tank body, an extension pipe is installed at the fixing member, and the extension pipe is located at the top of the sealing cover.

[0009] As a further improvement of the present invention, the top of the extension tube is provided with one or more second through holes and a guide tube is installed thereon, the guide tube being sealed and adapted to the sealing cap.

[0010] As a further improvement of the present invention, a safety valve is provided at the top of the tank to maintain the pressure inside the tank, and a filter element is provided on the inner side of the tank at the bottom of the support ring. The filter element is located above the discharge port and is used to treat the liquid carried out.

[0011] As a further improvement of the present invention, the bottom of the inner cavity between the outer shell and the inner ring is provided with one or more drainage ports for exporting the filtered liquid. A locking block is provided in the middle of the bottom of the outer shell, and a locking seat is provided below the locking block. The locking seat is adapted to the support ring.

[0012] As a further improvement of the present invention, the top center of the card holder is provided with a card slot adapted to the card block, the outer side of the card holder is provided with an inclined surface, and one or more flow guide ports arranged in a ring are provided on the inclined surface. The outer side of the plurality of flow guide ports is provided with flow guide ports, and the flow guide ports are adapted to the drainage port.

[0013] As a further improvement of the present invention, one or more outlets arranged in an array are provided on the outer side of the plate near the bottom for exporting filtered liquid. One or more insertion holes are provided on the outer side of the plate, and reinforcing rods are installed at the insertion holes for reinforcing and supporting the plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, through the combination of a defluorination tube and a conveying component, allows the liquid requiring defluorination to be introduced into a defluorination tank during use. Inside the tank, an ion exchange component with filling ion exchange resin adsorbs fluoride ions. During use, a first through-hole on the outer side of the inner ring, combined with a filter plate, forms a sealed space within the inner ring. The combination of a sealing cap and an extension tube facilitates the introduction of the liquid. Simultaneously, the conveying component pressurizes the conveyed liquid, improving defluorination efficiency. When in use, the filter plate has an outlet and can be made of activated carbon and reinforced with internal reinforcing rods, which can then be used to treat the defluorinated liquid again. Meanwhile, the filter element installed at the bottom of the tank can adsorb the liquid again when it is discharged. It can also purify the wastewater after cleaning the ion exchange resin, avoiding direct discharge and environmental pollution. The filter uses ceramic particles to treat the liquid. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a three-dimensional structural diagram of the defluorination tank and conveying components of the present invention; Figure 2 This is a front view schematic diagram of the combination of the defluorination tank and the conveying component of the present invention; Figure 3 This is a side view of the combined structure of the defluorination tank and conveying components of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the cross-sectional structure of the middle AA section; Figure 5 This is a side view of the assembly of the defluorination tank and the conveying component of the present invention from another angle; Figure 6 For the present invention Figure 5 Schematic diagram of the cross-sectional structure of the middle AA section; Figure 7This is a three-dimensional structural diagram of the ion exchange component of the present invention; Figure 8 This is a top view of the ion exchange assembly of the present invention; Figure 9 For the present invention Figure 8 Schematic diagram of the cross-sectional structure of the middle AA section; Figure 10 This is a schematic diagram of the three-dimensional structure of the filter plate of the present invention; Figure 11 This is a front view schematic diagram of the filter plate structure of the present invention; Figure 12 For the present invention Figure 11 Schematic diagram of the cross-sectional structure of AA.

[0016] In the diagram: 1. Base; 2. Defluorination tank; 3. Conveying components; 4. Ion exchange assembly; 5. Filter plate; 21. Tank body; 22. Safety valve; 23. Support frame; 24. Discharge port; 25. Support ring; 31. Connecting pipe; 32. Support plate; 33. Discharge pipe; 34. Fixing component; 35. Extension pipe; 36. Filter element; 41. Outer shell; 42. Inner ring; 43. Sealing groove; 44. First through hole; 45. Slot; 46. Slot seat; 47. First guide port; 48. Inclined surface; 49. Second guide port; 410. Inner cavity; 411. Locking block; 412. Drainage port; 413. Pressurized cavity; 51. Plate body; 52. Fixing groove; 53. Insertion hole; 54. Water outlet. Detailed Implementation

[0017] The following illustrations disclose several embodiments of the present invention. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details are not intended to limit the invention. That is, in some embodiments of the invention, these physical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and components will be shown in the illustrations in a simple schematic manner.

[0018] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0019] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 6Traditional defluorination methods include precipitation, ion exchange, and membrane separation, but each has its own drawbacks. For example, the fluoride precipitate after precipitation needs to be separated and recovered through filtration, centrifugation, and other operations, which is relatively cumbersome. Ion exchange methods use ion exchange resins whose exchange capacity decreases after long-term use, and the wastewater and waste generated during the regeneration of ion exchange resins may have an impact on the environment. When using membrane separation methods, the selection and maintenance of the membrane are more important, and the maintenance cost is high. Based on this, this application provides a water-soluble ammonium phosphate fluoride ion replacement device, including a base 1 for support, a defluorination tank 2 set on the base 1, and a conveying component 3 installed on the defluorination tank 2. The defluorination tank 2 includes a tank body 21. The bottom of the tank body 21 is supported on the base 1 by a support frame 23. A support ring 25 is provided on the inner side of the tank body 21 near the bottom. An ion exchange assembly 4 is arranged on the top of the support ring 25. The ion exchange assembly 4 includes a housing 41, an integrally formed inner ring 42 is provided on the inner side of the housing 41, and a fixed distance is maintained between the outer side of the inner ring 42 and the inner side of the housing 41. The fixed distance is set as an inner cavity 410. A pressurized chamber 413 is provided on the inner side of the inner ring 42. The pressurized chamber 413 is filled with ion exchange resin particles, the height of which is at least half of the vertical height of the inner side of the inner ring 42. The ion exchange resin particles are used to defluorinate fluorine-containing liquids. The outer side of the inner ring 42 is provided with one or more first through holes 44 in a ring shape, and a filter plate 5 is provided at the first through hole 44; A sealing groove 43 is provided at the top of the inner ring 42, and a sealing cover is installed at the sealing groove 43. The top of the sealing cover is connected to the conveying component 3 through a seal.

[0020] In use: The ion exchange assembly 4 is built into the support ring 25 within the defluorination tank 2. The ion exchange assembly 4 includes an inner ring 42 and a outer shell 41. The inner ring 42 is filled with ion exchange resin particles and has a pressurized chamber 413 and a first through hole 44 for defluorination of fluorinated liquids. In addition, the top of the defluorination tank 2 is provided with a sealing groove 43 and a sealing cover for sealing connection with the conveying component 3.

[0021] A controllable pressurization device is installed within the ion exchange assembly 4 to achieve precise pressurization of the pressurization chamber 413, thereby improving ion exchange efficiency. Simultaneously, the filter plate 5 at the first through-hole 44 can be made of an easy-to-clean material for easy cleaning and maintenance when processing large quantities of fluoride-containing liquids.

[0022] The rational design of the filling height of the ion exchange resin particles in the ion exchange component 4 and the setting of the first through hole 44 are conducive to increasing the contact area between fluoride ions and the resin surface, thereby improving the defluorination efficiency.

[0023] By providing a pressurized chamber 413, the conveyed liquid can be precisely pressurized, which can reduce energy consumption and wastewater discharge during the defluorination process, thereby reducing the impact on the environment.

[0024] The sealing groove 43 and sealing cover ensure the safety and stability of the defluorination process, while also facilitating connection with the conveying component 3 and making operation more convenient.

[0025] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 6 The conveying component 3 includes a support plate 32, the bottom of which is adapted to the base 1. One or more connecting pipes 31 are mounted on the outside of the support plate 32, and one end of the connecting pipe 31 extends to the inside of the tank 21 and is located at the top of the sealing cap.

[0026] The support plate 32 is adapted to the base 1 via its bottom, and one end of the connecting pipe 31 extends into the inside of the tank 21, while the other side is provided with a discharge pipe 33 near the bottom. This structure enables the pressurization and transportation of the defluorination liquid, and the treated liquid is discharged from the tank 21 through the discharge pipe 33.

[0027] A discharge pipe 33 is provided on one side of the support plate 32 near the bottom, and one end of the discharge pipe 33 extends to the bottom of the tank body 21.

[0028] The tank 21 is fixed above to facilitate easier access to the defluorination tank 2 for maintenance and replacement during operation of the conveying component 3. Furthermore, to increase the pressurization effect, the bottom of the connecting pipe 31 can be further configured with threads or other adjustable sealing connections to ensure a tight connection and increase the conveying pressure.

[0029] Regarding the design of the discharge pipe 33, its length can be adjusted to be adjustable, and a nozzle can be added to the end to achieve appropriate liquid distribution and control. In addition, to facilitate the discharge of the treated liquid from the tank 21, a detachable quick-release buckle can be added between the discharge pipe 33 and the bottom, making the outlet more flexible and convenient to use.

[0030] Please see Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 as well as Figure 10 The bottom of the tank body 21 is provided with a discharge port 24, which is adapted to the discharge pipe 33. A fixing member 34 is provided on the inner side of the tank body 21, and an extension pipe 35 is installed at the fixing member 34. The extension pipe 35 is located on the top of the sealing cover.

[0031] The top of the extension tube 35 has one or more second through holes and is fitted with a guide tube, which is sealed and adapted to the sealing cap.

[0032] A safety valve 22 is provided on the top of the tank 21 to maintain the pressure inside the tank 21. A filter element 36 is provided on the inner side of the tank 21 at the bottom of the support ring 25. The filter element 36 is located above the discharge port 24 and is used to treat the liquid carried out.

[0033] At the bottom of the tank body 21, in addition to the discharge pipe 33, a discharge port 24 is also provided to fit with the discharge pipe 33. A fixing member 34 is provided on the inner side of the tank body 21, and an extension pipe 35 is installed at the fixing member 34, located on top of the sealing cap. One or more second through holes are opened at the top of the extension pipe 35, and a guide pipe is installed thereon. This design allows for the guidance and distribution of the liquid, ensuring that the liquid fully contacts the ion exchange assembly 4.

[0034] A safety valve 22 is installed at the top of the tank 21 to maintain the pressure inside the tank 21 and ensure the safety of system operation. In addition, a filter element 36 is installed on the inner side of the bottom of the support ring 25. The filter element 36 is located above the discharge port 24 and is used to further filter and treat the liquid carried out.

[0035] Furthermore, an automated control system can be added to the liquid handling process to automatically adjust the pressure and flow rate within tank 21 according to the properties of the liquid and the processing requirements, thereby improving processing efficiency and stability. In addition, the filter element 36 can be designed to be detachable and easy to clean, facilitating the replacement and maintenance of the filter media and extending its service life.

[0036] The filter element 36 is located above the bottom of the support ring 25 inside the tank 21, and is used for further filtration and treatment of the carried-out liquid. Depending on the application requirements, the filter element 36 can be selected as follows: High-efficiency filter media suitable for defluorination liquid treatment, such as microporous filter cartridges, fiber filter cartridges, or activated carbon filter cartridges, are available. These filter media effectively remove suspended solids, particulate matter, organic matter, and other contaminants, ensuring the quality of the treated liquid. Choose the appropriate filtration precision according to the needs of different application scenarios. Filter element 36 can be designed with multi-layer filter screens or multi-stage filtration systems according to specific requirements to achieve precise filtration effects and meet the requirements of different particle sizes; Considering the ease of cleaning of filter element 36, cleaning holes or cleaning switches can be provided on filter element 36 to facilitate regular or on-demand cleaning, ensuring the normal operation and long-term stability of the filter; Simultaneously, by integrating automated control, monitoring devices or sensors can be designed for filter element 36 to monitor the filter's performance and usage status in real time. When the filter media becomes clogged or the filtration efficiency decreases, an alarm or automatic prompt will remind operators to perform maintenance and replace filter element 36, ensuring the continuous operation and stability of the system.

[0037] The specific type and model of filter monitoring device or sensor can be selected according to needs and actual conditions, for example: Differential pressure sensor: It monitors the degree of filter clogging by measuring the pressure difference between the inlet and outlet of the filter. A common model is the Differential Pressure Transmitter.

[0038] Flow meter: Used to monitor the flow rate of fluid passing through a filter. It can determine the performance status of the filter based on changes in flow rate. A common model is the Magnetic Flow Meter.

[0039] Turbidity sensor: It evaluates the filtration effect of the filter by measuring the concentration of suspended or particulate matter in the filtered liquid. A common model is the Turbidity Sensor.

[0040] Cleaning status monitoring device: By monitoring the cleaning status of the filter, such as parameters like the pressure, flow rate, and temperature of the cleaning water, the cleaning effect of the filter can be determined. A common model is the Cleaning Status Monitor. Please see Figure 8 , Figure 9 , Figure 10 , Figure 11 as well as Figure 12 The bottom of the inner cavity 410 between the outer shell 41 and the inner ring 42 is provided with one or more drainage ports 412 for exporting the filtered liquid. A locking block 411 is provided in the middle of the bottom of the outer shell 41, and a locking seat 46 is provided below the locking block 411. The locking seat 46 is adapted to the support ring 25.

[0041] In the inner cavity 410, the defluorination liquid can be smoothly discharged through the set drainage port 412. The combination of the locking block 411 and the locking seat 46 set at the outer shell 41, together with the setting of the support ring 25, supports the outer shell 41 and improves the effect of pressure defluorination. The top center of the card holder 46 is provided with a card slot 45 that is adapted to the card block 411. The outer side of the card holder 46 is provided with an inclined surface 48. One or more flow guide ports 47 arranged in a ring are provided on the inclined surface 48. Flow guide ports 49 are provided on the outer side of the multiple flow guide ports. Flow guide ports 49 are adapted to the drain port 412.

[0042] After defluorination, the liquid is introduced to the outside of the housing 41 through the inlet 412, and then guided through the first inlet 47 and the second inlet 49 on the card holder 46 to guide the liquid and guide it to the filter element 36. This not only increases the defluorination time, but also improves the defluorination effect during collection. The filter plate 5 includes a plate body 51. The two long sides of the plate body 51 are provided with fixing grooves 52. A sealing element is installed at the fixing groove 52 and is adapted to the first through hole 44 of the inner ring 42.

[0043] When in use, under pressure, the liquid is allowed to pass smoothly through the resin particles by combining the plate 51 and the inner ring 42, thereby achieving defluorination. Furthermore, the filter plate 5 can be composed of a different material than the resin particles, such as activated carbon or pressed ceramic plates. Its microporous structure allows for the filtration and separation of solid particles and impurities. This microporous structure can be configured with different pore sizes and porosities to meet specific filtration requirements.

[0044] One or more outlets 54 arranged in an array are provided on the outer side of the plate 51 near the bottom for discharging filtered liquid. One or more insertion holes 53 are provided on the outer side of the plate 51, and reinforcing rods are installed at the insertion holes 53 for reinforcing and supporting the plate 51.

[0045] The insertion hole 53 provided therein provides support at the plate 51, thereby improving the pressure filtration effect; Furthermore, two fixing grooves 52 are provided on the long side of the plate 51. A sealing element is installed in the fixing groove 52. The inner side of the inner ring 42 is sealed by the use of the sealing element, which provides convenient operation for later replacement of filter plate 5 and resin particles, and provides convenience for later maintenance. The specific usage method is as follows: First, the resin exchange particles are loaded into the inner ring 42. Before this, the first through hole 44 on the outside of the inner ring 42 is closed by the filter plate 5. The sealing cap is then used in conjunction with the extension tube 35 and the delivery assembly to deliver the liquid to the inside of the defluorination tank 2 via the pump body. During the pressurization process, the liquid is brought into contact with the defluorinated resin particles through pressurization. The defluorinated liquid, after passing through the resin particles, flows into the tank 21 through the inlet 412. The material can be filtered again in the tank 21 using the internal filter element 36, and finally collected through the outlet 24. After defluorination is completed, since the resin particles can be reused, they can be cleaned by acid washing, alkali washing or water washing, just like the defluorination operation. Furthermore, the ion exchange component 4 and the defluorination tank 2 are not fixed together, making subsequent replacement and maintenance operations convenient enough.

[0046] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A water-soluble ammonium phosphate fluoride ion exchange device, comprising a base (1) for support, a defluorination tank (2) disposed on the base (1), and a conveying component (3) installed on the defluorination tank (2); Its features are: The defluorination tank (2) includes a tank body (21), the bottom of which is erected on the base (1) by a support frame (23), and a support ring (25) is provided on the inner side of the tank body (21) near the bottom, and an ion exchange assembly (4) is arranged on the top of the support ring (25). The ion exchange assembly (4) includes a shell (41), and an integrally formed inner ring (42) is provided on the inner side of the shell (41). A fixed distance is maintained between the outer side of the inner ring (42) and the inner side of the shell (41), and the fixed distance is set as an inner cavity (410). The inner ring (42) is provided with a pressurized cavity (413) on the inner side. The pressurized cavity (413) is filled with ion exchange resin particles, the height of which is at least half of the vertical height of the inner side of the inner ring (42). The ion exchange resin particles are used to defluorinate fluorine-containing liquids. The outer side of the inner ring (42) is provided with one or more first through holes (44) in a ring shape. A filter plate (5) is provided at the first through hole (44). The filter plate (5) includes a plate body (51). The two long sides of the plate body (51) are provided with fixing grooves (52). A sealing element is installed at the fixing groove (52) and is adapted to the first through hole (44) of the inner ring (42). The top of the inner ring (42) is provided with a sealing groove (43), and a sealing cover is installed at the sealing groove (43). The top of the sealing cover is connected to the conveying component (3) through a seal.

2. The water-soluble ammonium phosphate fluoride ion exchange device according to claim 1, characterized in that: The conveying component (3) includes a support plate (32), the bottom of which is adapted to the base (1), and one or more connecting pipes (31) are mounted on the outside of the support plate (32), one end of which extends to the inside of the tank (21) and is located at the top of the sealing cap.

3. The water-soluble ammonium phosphate fluoride ion exchange device according to claim 2, characterized in that: A discharge pipe (33) is provided on one side of the support plate (32) near the bottom, and one end of the discharge pipe (33) extends to the bottom of the tank (21).

4. The water-soluble ammonium phosphate fluoride ion exchange device according to claim 1, characterized in that: The bottom of the tank (21) is provided with a discharge port (24), which is adapted to the discharge pipe (33). A fixing part (34) is provided on the inner side of the tank (21), and an extension pipe (35) is installed at the fixing part (34). The extension pipe (35) is located at the top of the sealing cover.

5. The water-soluble ammonium phosphate fluoride ion exchange device according to claim 4, characterized in that: The top of the extension tube (35) is provided with one or more second through holes and a guide tube is installed thereon, the guide tube being sealed and adapted to the sealing cap.

6. The water-soluble ammonium phosphate fluoride ion exchange device according to claim 1, characterized in that: A safety valve (22) is provided on the top of the tank (21) to maintain the pressure inside the tank (21). A filter element (36) is provided on the inner side of the tank (21) at the bottom of the support ring (25). The filter element (36) is located above the discharge port (24) and is used to treat the liquid carried out.

7. The water-soluble ammonium phosphate fluoride ion exchange device according to claim 1, characterized in that: The bottom of the inner cavity (410) between the outer shell (41) and the inner ring (42) is provided with one or more drainage ports (412) for exporting the filtered liquid. A locking block (411) is provided in the middle of the bottom of the outer shell (41), and a locking seat (46) is provided below the locking block (411). The locking seat (46) is adapted to the support ring (25).

8. The water-soluble ammonium phosphate fluoride ion exchange device according to claim 7, characterized in that: The card holder (46) has a card slot (45) adapted to the card block (411) at the top center. The card holder (46) has an inclined surface (48) on the outside. One or more flow guide ports (47) arranged in a ring are provided on the inclined surface (48). Flow guide ports (49) are provided on the outside of the multiple flow guide ports. Flow guide ports (49) are adapted to the drainage port (412).

9. The water-soluble ammonium phosphate fluoride ion exchange device according to claim 1, characterized in that: One or more outlets (54) are arranged in an array near the bottom of the outer side of the plate (51) for exporting filtered liquid. One or more insertion holes (53) are opened on the outer side of the plate (51), and a reinforcing rod is installed at the insertion hole (53) for reinforcing and supporting the plate (51).

Images