Environment-friendly device for producing sodium fluorosilicate from fluorine-containing wastewater

Abstract

This utility model relates to the field of environmental protection and resource recycling technology, and discloses an environmental protection device for producing sodium fluorosilicate from fluoride-containing wastewater. The device includes a vessel, a cylindrical box, a feeding pipe, a filter cartridge, a hollow shaft, an inlet pipe, a discharge pipe, a slag discharge pipe, a first stirring assembly, a second stirring assembly, a drive assembly, a reflux assembly, a pH detection module, and a feeding assembly. The feeding pipe is fixedly installed at the top center of the cylindrical box, and the vessel is fixedly installed at the top of the feeding pipe. A heating plate is fixedly installed on the inner wall of the vessel. The hollow shaft is rotatably installed on the top inner wall of the vessel and extends into the cylindrical box. This utility model has the following advantages and effects: it can effectively improve the treatment efficiency of fluoride-containing wastewater, while achieving efficient resource recovery. It also has the advantages of good mixing uniformity, compact and reasonable structure, and convenient operation. It is suitable for large-scale industrial production and has significant environmental and economic benefits.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection and resource recycling technology, and in particular to an environmental protection device for producing sodium fluorosilicate from fluoride-containing wastewater. Background Technology

[0002] In the field of fluoride-containing wastewater treatment, traditional processes often employ calcium salt precipitation, adsorption, or membrane separation. However, these methods generally suffer from low resource utilization, high treatment costs, and secondary pollution. For example, while calcium salt precipitation can remove fluoride ions, it generates a large amount of fluoride-containing sludge, increasing the difficulty of subsequent disposal. In adsorption, the regeneration efficiency of the adsorbent is low, and it is prone to failure due to excessively high fluoride ion concentrations. Membrane separation requires high equipment precision and consumes a lot of energy, making large-scale application difficult. Meanwhile, in the production of sodium fluorosilicate, existing equipment often suffers from low reaction efficiency, uneven stirring, and crude pH control. For instance, traditional reactors typically use a single stirring component, leading to significant local concentration differences in the solution, affecting the formation rate and purity of sodium fluorosilicate crystals. pH monitoring relies heavily on manual sampling, which cannot provide real-time feedback and adjustment of reaction conditions, resulting in excessive or insufficient reagent dosage, increasing costs and reducing product quality, making it difficult to achieve the integrated goal of "pollution control and resource recovery."

[0003] Therefore, this utility model proposes an environmental protection device for producing sodium fluorosilicate from fluoride-containing wastewater to solve the above problems.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide an environmental protection device for producing sodium fluorosilicate from fluoride-containing wastewater. This device can effectively improve the treatment efficiency of fluoride-containing wastewater, achieve efficient resource recovery, and has the advantages of good mixing uniformity, compact and reasonable structure, and convenient operation.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an environmental protection device for producing sodium fluorosilicate from fluoride-containing wastewater, comprising a kettle body, a cylindrical box, a feeding pipe, a filter cylinder, a hollow shaft, a feed pipe, a discharge pipe, a slag discharge pipe, a stirring assembly one, a stirring assembly two, a drive assembly, a reflux assembly, a pH detection module, and a feeding assembly.

[0007] The feeding pipe is fixedly installed at the top center of the cylindrical box. The vessel body is fixedly installed at the top of the feeding pipe, and a heating plate is fixedly installed on the inner wall of the vessel body. The hollow shaft is rotatably installed on the top inner wall of the vessel body and extends into the cylindrical box. The first stirring assembly is located inside the cylindrical box and connected to the hollow shaft. The second stirring assembly is located inside the vessel body. The drive assembly is located on the vessel body and connected to the second stirring assembly and the hollow shaft. Spiral blades extending into the feeding pipe are fixedly installed on the hollow shaft, and multiple through holes are opened on the hollow shaft. A partition is installed inside the hollow shaft. The baffle plate is flush with the lowest point of the multiple through holes at the bottom to prevent wastewater from accumulating inside the hollow shaft. The filter cartridge is fixedly installed on the top and bottom inner walls of the cylindrical box, and the filter cartridge is set with the hollow shaft as the center. The feed pipe is sealed and rotatably installed at the top of the hollow shaft. The discharge pipe is fixedly installed on the bottom of the outer side of the cylindrical box, and the slag discharge pipe is fixedly installed at the center of the bottom of the cylindrical box and is equipped with a control valve. The feeding assembly is set at the top of the vessel and connected to the feed pipe. The reflux assembly and pH detection module are both set on the cylindrical box, and the reflux assembly is connected to the vessel.

[0008] A further feature of this invention is that the feeding assembly includes a storage tank, a conveying pipe, and a regulating valve. A mounting frame is fixedly installed on the top of the vessel body, and a storage tank is fixedly installed on the mounting frame. A conveying pipe is fixedly connected to the bottom side of the storage tank. The end of the conveying pipe away from the storage tank is connected to the feed pipe, and a regulating valve is fixedly installed on the conveying pipe.

[0009] By adopting the above technical solution, liquid additives can be added to the reactor as needed, and the amount of liquid additives added can be easily adjusted.

[0010] A further feature of this invention is that the stirring assembly includes multiple stirring rods, with multiple stirring rods radially fixedly mounted on a hollow shaft, and all of the stirring rods located inside a cylindrical box.

[0011] By adopting the above technical solution, the wastewater in the filter cartridge section of the cylindrical box can be stirred when the hollow shaft rotates.

[0012] A further feature of this invention is that the stirring assembly two includes an outer geared disc and multiple stirring racks. The outer geared disc is rotatably mounted on the top inner wall of the vessel body, and multiple stirring racks are fixedly mounted on the bottom side of the outer geared disc.

[0013] By adopting the above technical solution, the wastewater inside the vessel can be stirred when the external gear disc rotates.

[0014] A further feature of this invention is that the stirring assembly 2 also includes multiple guide plates, and guide plates are fixedly installed on multiple stirring racks.

[0015] By adopting the above technical solution, the wastewater in the reactor can be stirred when the stirring frame rotates with the external gear plate.

[0016] A further feature of this invention is that the guide plate is arranged at an angle.

[0017] By adopting the above technical solution, the wastewater in the reactor can be controlled to form a circulating flow state with the cooperation of the spiral blades.

[0018] A further feature of this invention is that the driving assembly includes a motor, a driving gear, and an internal gear disc. The internal gear disc is fixedly mounted on a hollow shaft, and the motor is fixedly mounted on the top of the vessel body. The output shaft of the motor extends into the vessel body and is fixedly fitted with a driving gear. The driving gear meshes with the internal gear disc and the external gear disc.

[0019] By adopting the above technical solution, driving force can be provided for the hollow shaft, and the external gear disk can be controlled to rotate in the opposite direction.

[0020] A further feature of this invention is that the pH detection module includes multiple pH sensors extending into the cylindrical box, and the detection end of the pH sensor (7) extends to the wastewater mainstream area outside the filter cartridge (13).

[0021] By adopting the above technical solution, the pH value of wastewater in the cylindrical tank can be monitored in real time.

[0022] A further feature of this invention is that the reflux assembly includes a delivery pump and a reflux pipe. The delivery pump is fixedly installed on the top of the cylindrical box, the inlet of the delivery pump is connected to the cylindrical box, and the outlet of the delivery pump is connected to the reflux pipe connected to the vessel body.

[0023] By adopting the above technical solution, the filtered wastewater in the cylindrical box can be re-extracted into the reactor body.

[0024] A further feature of this invention is that the inlet of the delivery pump is connected to a vertical pipe extending to a position near the inner wall of the bottom of the cylindrical box, and a spherical mesh cover is fixedly installed at the bottom end of the vertical pipe.

[0025] By adopting the above technical solution, it is possible to ensure stable extraction of wastewater from the cylindrical tank while preventing debris from being sucked into the transfer pump.

[0026] The beneficial effects of this utility model are:

[0027] This device effectively treats fluoride-containing wastewater. The heating plate inside the reactor maintains a constant temperature, improving chemical reaction efficiency. The filter cartridge and hollow shaft inside the cylindrical tank ensure thorough retention of impurities. Two separate stirring components treat wastewater from different areas. The spiral blades and inclined guide plates enhance wastewater flow, preventing clogging and optimizing the liquid circulation path for more uniform reactions. The motor in the drive assembly drives the inner and outer gear discs in opposite directions via gear meshing, improving stirring and reducing energy consumption. A pH detection module monitors the wastewater's acidity and alkalinity in real time, providing accurate data for subsequent treatment. The reflux component reintroduces the filtered wastewater into the reactor, forming a closed-loop treatment process that significantly improves resource utilization. The overall design is compact and efficient, easy to operate, and possesses high environmental value and economic benefits. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a three-dimensional structural diagram of an environmental protection device for producing sodium fluorosilicate from fluoride-containing wastewater, as proposed in this utility model.

[0030] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure;

[0031] Figure 3 for Figure 2 Front view structural diagram;

[0032] Figure 4 This is a partial three-dimensional structural schematic diagram of the present invention;

[0033] Figure 5 for Figure 4 A schematic diagram of a partial cross-sectional structure from the perspective of the main view.

[0034] In the diagram, 1. Kettle body; 101. Heating plate; 11. Cylindrical box; 12. Feed pipe; 13. Filter cartridge; 14. Slag discharge pipe; 15. Discharge pipe; 2. Hollow shaft; 201. Feed pipe; 21. Spiral blade; 22. Stirring rod; 3. External gear disc; 31. Stirring frame; 32. Guide plate; 4. Motor; 41. Drive gear; 42. Internal gear disc; 5. Storage tank; 51. Delivery pipe; 52. Regulating valve; 6. Delivery pump; 61. Return pipe; 62. Spherical mesh cover; 7. pH sensor. Detailed Implementation

[0035] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0036] Reference Figure 1-5 An environmental protection device for producing sodium fluorosilicate from fluoride-containing wastewater includes a reactor body 1, a cylindrical box 11, a feeding pipe 12, a filter cartridge 13, a hollow shaft 2, a feed pipe 201, a discharge pipe 15, a slag discharge pipe 14, and a pH value detection module.

[0037] The feed pipe 12 is fixedly installed at the top center of the cylindrical box 11. The vessel body 1 is fixedly installed at the top of the feed pipe 12, and a heating plate 101 is fixedly installed on the inner wall of the vessel body 1. The heating plate 101 is electrically connected to the temperature control module for constant temperature control of the wastewater in the vessel body 1. The hollow shaft 2 is rotatably installed on the top inner wall of the vessel body 1 and extends into the cylindrical box 11. Spiral blades 21 extending into the feed pipe 12 are fixedly installed on the hollow shaft 2, and multiple through holes are opened on the hollow shaft 2. A partition is provided inside the hollow shaft 2. The partition is flush with the lowest point of the multiple through holes at the bottom to prevent wastewater from accumulating inside the hollow shaft. Multiple stirring rods 22 are radially fixedly installed on the hollow shaft 2. The multiple stirring rods 22 are all located inside the cylindrical box 11 and can stir the wastewater in the filter cartridge 13 part of the cylindrical box 11 when the hollow shaft 2 rotates.

[0038] An outer geared disc 3 is rotatably mounted on the inner top wall of the vessel body 1. Multiple stirring racks 31 are fixedly mounted on the bottom side of the outer geared disc 3, which can stir the wastewater in the vessel body 1 when the outer geared disc 3 rotates. Each of the multiple stirring racks 31 is fixedly mounted with a guide plate 32, which can stir the wastewater in the vessel body 1 when the stirring rack 31 rotates with the outer geared disc 3. In order to control the wastewater in the vessel body 1 to form a circulating flow state with the cooperation of the spiral blades 21, the guide plate 32 is set in an inclined shape.

[0039] An internal gear disk 42 is fixedly installed on the hollow shaft 2, and a motor 4 is fixedly installed on the top of the vessel body 1. The output shaft of the motor 4 extends into the vessel body 1 and is fixedly fitted with a drive gear 41. The drive gear 41 meshes with the internal gear disk 42 and the external gear disk 3, which can provide driving force for the hollow shaft 2 and control the external gear disk 3 to rotate in the opposite direction.

[0040] The filter cartridge 13 is fixedly installed on the top inner wall and bottom inner wall of the cylindrical box 11, and the filter cartridge 13 is set based on the hollow shaft 2 as the center. The feed pipe 201 is sealed and rotatably installed on the top of the hollow shaft 2. The discharge pipe 15 is fixedly installed on the bottom of the outer side of the cylindrical box 11, and the slag discharge pipe 14 is fixedly installed at the center of the bottom of the cylindrical box 11 and is equipped with a control valve.

[0041] A mounting bracket is fixedly installed on the top of the vessel body 1, and a liquid storage tank 5 is fixedly installed on the mounting bracket. A conveying pipe 51 is fixedly connected to the bottom side of the liquid storage tank 5. The end of the conveying pipe 51 away from the liquid storage tank 5 is connected to the feed pipe 201, and a regulating valve 52 is fixedly installed on the conveying pipe 51, which can add liquid additives to the vessel body 1 as needed, and at the same time facilitate the adjustment of the amount of liquid additives added.

[0042] A transfer pump 6 is fixedly installed on the top of the cylindrical box 11. The inlet of the transfer pump 6 is connected to the cylindrical box 11, and the outlet of the transfer pump 6 is connected to a return pipe 61 connected to the vessel body 1. This allows the filtered wastewater in the cylindrical box 11 to be re-extracted into the vessel body 1. In order to ensure stable extraction of wastewater from the cylindrical box 11 while preventing impurities from being sucked into the transfer pump 6.

[0043] The pH detection module is located on the top of the cylindrical box 11, and multiple pH sensors 7 extending into the cylindrical box 11 are installed on the pH detection module. The detection end of the pH sensor 7 extends into the main wastewater flow area inside the filter cartridge 13, which is used to monitor the pH value of the filtered wastewater in real time, thereby enabling real-time monitoring of the pH value of the wastewater in the cylindrical box 11.

[0044] Specifically, in order to ensure stable extraction of wastewater from the cylindrical box 11 while preventing debris from being sucked into the transfer pump 6, the inlet of the transfer pump 6 is connected to a vertical pipe extending to the inner wall near the bottom of the cylindrical box 11, and a spherical mesh cover 62 is fixedly installed at the bottom end of the vertical pipe.

[0045] A baffle is installed inside the hollow shaft 2 at a position flush with the lowest point of the multiple through holes at the bottom, in order to prevent wastewater from accumulating inside the hollow shaft 2.

[0046] The circuits, electronic components, and module mechanisms involved all employ existing technologies, which can be fully implemented by those skilled in the art, and need no further explanation. The content protected by this application does not involve any improvement to the software, circuits, or methods.

[0047] Working principle:

[0048] First, the power is turned on, and the fluoride-containing wastewater is transported into the vessel 1 through the feed pipe 201, hollow shaft 2, and through hole. The motor 4 is started, and the motor 4 controls the inner gear disk 42 and the outer gear disk 3 to rotate in opposite directions through the drive gear 41. The rotation of the outer gear disk 3 can control multiple stirring racks 31 to stir the wastewater in the vessel 1. At the same time, under the action of multiple guide plates 32, the wastewater in the vessel 1 can be turned over. The spiral blades 21 on the hollow shaft 2 push the wastewater to flow in another direction, thereby controlling the turning of the wastewater in the vessel 1. In addition, the stirring rod 22 driven by the hollow shaft 2 fully stirs the wastewater in the cylindrical box 11, thereby ensuring that the wastewater and the subsequently added chemical reagents are mixed evenly, so that the wastewater in the vessel 1 forms a circulating flow state, optimizing the flow path of the liquid, avoiding reaction dead zones, and further improving the reaction efficiency. At the same time, the filter cartridge 13 set in the cylindrical box 11 performs preliminary filtration of the wastewater.

[0049] Meanwhile, the liquid additive in the storage tank 5 is injected into the feed pipe 201 through the delivery pipe 51 at a preset flow rate and enters the vessel body 1. The function of the regulating valve 52 is to precisely control the input amount of the additive to meet the chemical ratio required for the reaction.

[0050] After preliminary treatment, the wastewater is filtered by filter cartridge 13 and then pumped by transfer pump 6 and transported back to the vessel body 1 through return pipe 61. The design of spherical mesh cover 62 effectively prevents impurities from entering transfer pump 6, thereby ensuring the stable operation of the system. The wastewater that is sent back to the vessel body 1 through return pipe 61 undergoes secondary reaction or adjustment. During this period, pH sensor 7 monitors the changes in acidity and alkalinity of the wastewater in column tank 11 in real time and feeds the data back to the control system so as to adjust the type and amount of additives in a timely manner to ensure that the wastewater achieves the ideal treatment effect.

[0051] Finally, the treated wastewater is discharged from the discharge pipe 15, while the solid residue deposited at the bottom of the cylindrical box 11 is collected through the slag discharge pipe 14. The whole process is automated, which not only improves the efficiency of producing sodium fluorosilicate from fluoride-containing wastewater, but also significantly reduces the need for manual intervention, demonstrating the dual advantages of environmental protection and high efficiency.

[0052] The above provides a detailed description of an environmental protection device for producing sodium fluorosilicate from fluoride-containing wastewater, as provided by this utility model. Specific embodiments have been used to illustrate the principles and implementation methods of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. An environmentally friendly device for producing sodium fluorosilicate from fluoride-containing wastewater, characterized in that, It includes a vessel body (1), a cylindrical box (11), a feeding pipe (12), a filter cartridge (13), a hollow shaft (2), a feed pipe (201), a discharge pipe (15), a slag discharge pipe (14), a stirring assembly 1, a stirring assembly 2, a drive assembly, a reflux assembly, a pH detection module, and a feeding assembly; The feeding pipe (12) is fixedly installed at the top center of the cylindrical box (11). The vessel body (1) is fixedly installed at the top of the feeding pipe (12), and a heating plate (101) is fixedly installed on the inner wall of the vessel body (1). The hollow shaft (2) is rotatably installed on the top inner wall of the vessel body (1) and extends into the cylindrical box (11). The stirring assembly one is set in the cylindrical box (11) and connected to the hollow shaft (2). The stirring assembly two is set in the vessel body (1). The driving assembly is set on the vessel body (1) and connected to the stirring assembly two and the hollow shaft (2). A spiral blade (21) extending into the feeding pipe (12) is fixedly installed on the hollow shaft (2), and multiple through holes are opened on the hollow shaft (2). A partition is provided, which is flush with the lowest point of the multiple through holes at the bottom, to prevent wastewater from accumulating in the hollow shaft. The filter cylinder (13) is fixedly installed on the top inner wall and bottom inner wall of the cylindrical box (11), and the filter cylinder (13) is set with the hollow shaft (2) as the center. The feed pipe (201) is sealed and rotatably installed at the top of the hollow shaft (2). The discharge pipe (15) is fixedly installed on the bottom of the cylindrical box (11), and the slag discharge pipe (14) is fixedly installed at the bottom center of the cylindrical box (11) and is equipped with a control valve. The feeding assembly is set on the top of the vessel body (1) and connected to the feed pipe (201). The reflux assembly and pH detection module are both set on the cylindrical box (11), and the reflux assembly is connected to the vessel body (1).

2. The environmental protection device for producing sodium fluorosilicate from fluoride-containing wastewater according to claim 1, characterized in that: The feeding assembly includes a storage tank (5), a conveying pipe (51), and a regulating valve (52). A mounting bracket is fixedly installed on the top of the vessel body (1), and the storage tank (5) is fixedly installed on the mounting bracket. The conveying pipe (51) is fixed and connected to the bottom side of the storage tank (5). The end of the conveying pipe (51) away from the storage tank (5) is connected to the feed pipe (201), and a regulating valve (52) is fixedly installed on the conveying pipe (51).

3. The environmental protection device for producing sodium fluorosilicate from fluoride-containing wastewater according to claim 1, characterized in that: The stirring assembly includes multiple stirring rods (22), which are radially fixed on the hollow shaft (2). All stirring rods (22) are located inside the cylindrical box (11).

4. An environmental protection device for producing sodium fluorosilicate from fluoride-containing wastewater according to claim 1, characterized in that: The stirring assembly 2 includes an outer geared disc (3) and multiple stirring racks (31). The outer geared disc (3) is rotatably mounted on the top inner wall of the vessel body (1), and multiple stirring racks (31) are fixedly mounted on the bottom side of the outer geared disc (3).

5. An environmental protection device for producing sodium fluorosilicate from fluoride-containing wastewater according to claim 4, characterized in that: The second stirring assembly also includes multiple guide plates (32), and multiple stirring racks (31) are fixedly installed with guide plates (32).

6. The environmental protection device for producing sodium fluorosilicate from fluoride-containing wastewater according to claim 1, characterized in that: The guide plate (32) is set at an angle.

7. An environmental protection device for producing sodium fluorosilicate from fluoride-containing wastewater according to claim 4, characterized in that: The drive assembly includes a motor (4), a drive gear (41), and an internal gear disk (42). The internal gear disk (42) is fixedly mounted on the hollow shaft (2). The motor (4) is fixedly mounted on the top of the vessel body (1). The output shaft of the motor (4) extends into the vessel body (1) and is fixedly fitted with the drive gear (41). The drive gear (41) meshes with the internal gear disk (42) and the external gear disk (3).

8. An environmental protection device for producing sodium fluorosilicate from fluoride-containing wastewater according to claim 1, characterized in that: The pH detection module includes multiple pH sensors (7) extending into the cylindrical box (11), and the detection end of the pH sensor (7) extends to the wastewater mainstream area outside the filter cartridge (13).

9. An environmental protection device for producing sodium fluorosilicate from fluoride-containing wastewater according to claim 1, characterized in that: The reflux assembly includes a delivery pump (6) and a reflux pipe (61). The delivery pump (6) is fixedly installed on the top of the cylindrical box (11). The inlet of the delivery pump (6) is connected to the cylindrical box (11), and the outlet of the delivery pump (6) is connected to the reflux pipe (61) which is connected to the vessel body (1).

10. An environmental protection device for producing sodium fluorosilicate from fluoride-containing wastewater according to claim 9, characterized in that: The inlet of the delivery pump (6) is connected to a vertical pipe extending to the inner wall of the bottom of the cylindrical box (11), and a spherical mesh cover (62) is fixedly installed at the bottom end of the vertical pipe.

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