Microfilter device for potassium fluoride solution

Abstract

The utility model provides a potassium fluoride solution microfilter device, and belongs to the technical field of potassium fluoride preparation. Comprising a bottom plate; the filter shell is arranged on the bottom plate; the plurality of filter cartridges are arranged in the filter shell; the micro-filtration membrane is arranged in the filter cartridge and is used for filtering a potassium fluoride solution; the separation layer is arranged in the filter cartridge and is used for flowing of separated liquid; the flowing layer is arranged in the micro-filtration membrane and is used for solution flowing; and the spiral column is arranged in the flowing layer and is used for increasing the turbulent flow of the solution. The spiral columns and the flow deflectors are arranged, so that the turbulence degree of a solution can be increased, the laminar flow state close to the surface of the micro-filtration membrane is effectively broken, the concentration polarization phenomenon is reduced, meanwhile, diffusion of solute is enhanced through turbulence, and macromolecules or particulate matters are prevented from being accumulated on the surface of the micro-filtration membrane to form a gel layer.

Description

Technical Field

[0001] This utility model relates to the field of potassium fluoride preparation technology, and in particular to a potassium fluoride solution microfiltration device. Background Technology

[0002] Potassium fluoride is an inorganic salt, also known as the fluoride of potassium. It is a white monoclinic crystal or crystalline powder with a salty taste and is hygroscopic. It is soluble in water but insoluble in ethanol. Its aqueous solution is alkaline and can corrode glass and porcelain. In the potassium fluoride production process, it is necessary to treat liquids containing potassium fluoride to remove impurities, particulate matter, or other unwanted components to obtain a pure solution. Therefore, a potassium fluoride solution microfiltration device is used.

[0003] Currently, in existing potassium fluoride solution microfiltration devices, when the flow rate of the solution through the microfiltration membrane is too low, solutes and particulate matter accumulate near the membrane surface, forming a concentration gradient. This leads to reduced solvent permeation on the concentrated solution side, causing concentration polarization. When concentration polarization reaches a certain level, especially under low flow rate and high solute concentration conditions, the solute near the membrane surface reaches or exceeds the saturation concentration, resulting in enhanced solute interaction and the formation of a semi-solid gel-like layer, i.e., a gel layer. The formation of the gel layer further exacerbates the membrane resistance, reduces the membrane permeation flux, and affects filtration efficiency. Therefore, this application provides a potassium fluoride solution microfiltration device to meet this requirement. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a potassium fluoride solution microfiltration device to solve the problem that in the use of existing microfiltration devices, the flow rate of the solution through the microfiltration membrane is too low, forming a gel layer on the microfiltration membrane and hindering the solution from passing through.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A potassium fluoride solution microfiltration device, with an anti-corrosion coating applied to the contact area with the potassium fluoride solution, includes: a base plate; a filter housing disposed on the base plate; a plurality of filter cartridges disposed within the filter housing; a microfiltration membrane disposed within the filter cartridges for filtering the potassium fluoride solution; a separation layer disposed within the filter cartridges for the flow of the separated liquid; a flow layer disposed within the microfiltration membrane for the flow of the solution; a spiral column disposed within the flow layer for increasing the turbulence of the solution; a plurality of guide vanes disposed within the flow layer, the guide vanes being located in the spiral channel of the spiral column, the guide vanes being arc-shaped for the smooth passage of the solution; a conveying section disposed above the filter cartridges for conveying the solution; a discharge section disposed below the filter cartridges for discharging the separated liquid; and a conveying pipe disposed within the filter housing.

[0007] It also includes: a pretreatment frame, disposed on the base plate and located next to the filter housing; a booster pump, disposed inside the pretreatment frame; and one side of the delivery pipe extends into the pretreatment frame and is connected to the outlet end of the booster pump.

[0008] It also includes: a feed pipe, connected to the top of the pretreatment frame; a filter screen frame, located at the top of the inner cavity of the pretreatment frame; and a collection hopper, located inside the pretreatment frame and below the filter screen frame, for collecting the pretreated solution and allowing it to fall down uniformly.

[0009] The conveying section includes: a first connecting pipe, which is connected to the top of the filter cylinder; a second connecting pipe, which is connected to the first connecting pipe; a diverter valve, which is connected to the second connecting pipe; and the other side of the conveying pipe is connected to the diverter valve.

[0010] The discharge section includes: a third connecting pipe, which is connected to the bottom of the filter cylinder and communicates with the bottom of the flow layer; a first discharge pipe, which is connected to the filter cylinder and communicates with the flow layer; a first control valve, which is located on the first discharge pipe; an output pipe, which is connected to the third connecting pipe; and a second control valve, which is located on the output pipe.

[0011] It also includes: several fixed columns, which are disposed inside the filter housing and connected to the filter cylinder.

[0012] It also includes a control panel, which is located on the base plate.

[0013] Compared with the prior art, this utility model has at least the following beneficial effects:

[0014] In the above scheme, by setting the spiral column and the flow guide plate, the degree of turbulence of the solution can be increased, effectively breaking the laminar flow state near the surface of the microfiltration membrane and reducing the occurrence of concentration polarization. At the same time, the turbulence enhances the diffusion of the solute, which helps to prevent macromolecules or particles from accumulating on the surface of the microfiltration membrane to form a gel layer. Attached Figure Description

[0015] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0016] Figure 1 A three-dimensional structural diagram of a potassium fluoride solution microfiltration device;

[0017] Figure 2 This is a cross-sectional view of the filter housing structure;

[0018] Figure 3This is a schematic diagram of the conveyor section structure;

[0019] Figure 4 This is a schematic diagram of the discharge section structure;

[0020] Figure 5 This is a cross-sectional view of the filter cartridge structure.

[0021] [Figure Labels]

[0022] 1. Base plate; 2. Pretreatment frame; 3. Feed pipe; 4. Filter housing; 5. Control panel; 6. Collection hopper; 7. Filter screen frame; 8. Filter cylinder; 9. Booster pump; 10. Conveying section; 11. Fixed column; 12. Discharge section; 13. Microfiltration membrane; 14. Separation layer; 15. Guide vane; 16. Flow layer; 17. Spiral column; 18. Conveying pipe; 101. Diverter valve; 102. Second connecting pipe; 103. First connecting pipe; 121. Output pipe; 122. Second control valve; 123. First control valve; 124. First discharge pipe; 125. Third connecting pipe.

[0023] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to the specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0024] The potassium fluoride solution microfiltration device provided by this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0025] like Figure 1 , Figure 2 and Figure 5As shown, an embodiment of this utility model provides a potassium fluoride solution microfiltration device, comprising: a base plate 1; a filter housing 4 disposed on the base plate 1; a plurality of filter cylinders 8 disposed within the filter housing 4; a microfiltration membrane 13 disposed within the filter cylinders 8 for filtering potassium fluoride solution; a separation layer 14 disposed within the filter cylinders 8 for the flow of separated liquid; a flow layer 16 disposed within the microfiltration membrane 13 for solution flow; a spiral column 17 disposed within the flow layer 16 for increasing solution turbulence; a plurality of guide vanes 15 disposed within the flow layer 16, and the guide vanes 15 are located in the spiral channel of the spiral column 17, and the guide vanes 15 are arc-shaped for smooth solution passage; a conveying section 10 disposed above the filter cylinders 8 for conveying solution; a discharge section 12 disposed below the filter cylinders 8 for discharging separated liquid; and a conveying pipe 18 disposed within the filter housing 4.

[0026] By setting the spiral column 17, which is typically made of a chemically resistant metal such as stainless steel or a special alloy, the spiral column 17 guides the fluid to form a spiral flow through its specific shape. This flow pattern can accelerate the fluid velocity. Since the spiral flow increases the contact area between the fluid and the filter medium, it helps to improve the filtration efficiency, allowing more solutes or impurities to be effectively separated. By setting the guide vane 15, the direction of the fluid is changed to ensure that the fluid passes through the microfiltration membrane 13 evenly. This helps to prevent local overload and clogging, thereby extending the service life of the microfiltration membrane 13.

[0027] like Figure 2 As shown, it also includes: a pretreatment frame 2, which is set on the base plate 1 and located next to the filter housing 4; a booster pump 9, which is set inside the pretreatment frame 2; and one side of the delivery pipe 18 extends into the pretreatment frame 2 and is connected to the outlet end of the booster pump 9.

[0028] By setting up a booster pump 9 to draw in low-pressure fluid and increase its pressure, the solution can be pushed through the filter membrane, ensuring that the solution passes through the microfiltration membrane 13 at sufficient pressure, which helps to improve the filtration rate and efficiency.

[0029] like Figure 2 As shown, it also includes: a feed pipe 3, which is connected to the top of the pretreatment frame 2; a filter screen frame 7, which is located at the top of the inner cavity of the pretreatment frame 2; and a collection hopper 6, which is located inside the pretreatment frame 2 and below the filter screen frame 7, for collecting the pretreated solution and allowing it to fall down uniformly.

[0030] By setting the filter screen 7, the solution can be coarsely filtered, which can effectively remove large particles in the solution and reduce the load on the microfiltration membrane 13; by setting the collection hopper 6, the coarsely filtered solution can be collected and flow into the bottom of the pretreatment frame 2 for sedimentation.

[0031] like Figure 3 , Figure 4 and Figure 5 As shown, the conveying unit 10 includes: a first connecting pipe 103, which is connected to the top of the filter cylinder 8; a second connecting pipe 102, which is connected to the first connecting pipe 103; a diversion valve 101, which is connected to the second connecting pipe 102; and the other side of the conveying pipe 18 is connected to the diversion valve 101.

[0032] By setting up the conveying unit 10, the coarsely filtered solution can be conveyed and delivered to the filter cartridge 8 through the diversion valve 101. The diversion valve 101 has a unidirectional flow function to prevent backflow.

[0033] like Figure 3 , Figure 4 and Figure 5 As shown, the discharge section 12 includes: a third connecting pipe 125, which is connected to the lower part of the filter cylinder 8 and communicates with the bottom of the flow layer 16; a first discharge pipe 124, which is connected to the filter cylinder 8 and communicates with the flow layer 16; a first control valve 123, which is disposed on the first discharge pipe 124; an output pipe 121, which is connected to the third connecting pipe 125; and a second control valve 122, which is disposed on the output pipe 121.

[0034] By setting the first control valve 123 to connect to the external pipeline, the separated solution is transported in a unified manner for subsequent operations; by setting the second control valve 122, the remaining solution is transported in a unified manner for easy subsequent management.

[0035] like Figure 2 and Figure 4 As shown, it also includes: several fixing columns 11, which are disposed inside the filter housing 4 and connected to the filter cylinder 8. By setting the fixing columns 11, the fixing columns 11 and the filter cylinder 8 are fixedly connected, and the fixing columns 11 are fixedly connected to the bottom of the inner cavity of the filter housing 4, thereby providing support and fixing for the filter cylinder 8.

[0036] like Figure 1 and Figure 2 As shown, it also includes a control panel 5, which is mounted on the base plate 1. By setting up the control panel 5, the required data can be input into the control panel 5 in advance, and the operation of the device can be controlled through the control panel 5. If a deviation or accident occurs, the control panel 5 will stop operating and notify personnel to conduct inspection.

[0037] The technical solution provided by this utility model involves the solution entering the pretreatment frame 2 through the feed pipe 3, undergoing coarse filtration through the filter screen frame 7, and then flowing through the collection hopper 6 to the bottom of the pretreatment frame 2. The booster pump 9 is activated using the control panel 5, and with the cooperation of the conveying pipe 18, the solution is conveyed to the diversion valve 101. Then, with the cooperation of the second connecting pipe 102 and the first connecting pipe 103, the solution is conveyed to the filter cylinder 8, located in the flow layer 16. With the cooperation of the spiral column 17 and the guide plate 15, the solution flow is accelerated. The solution is then separated by the microfiltration membrane 13, and the separated solution is located in the separation layer 14. It then flows into the storage device through the first discharge pipe 124 and the first control valve 123. The remaining solution is output through the cooperation of the third connecting pipe 125, the output pipe 121, and the second control valve 122, facilitating subsequent operations.

[0038] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details have been described in detail in the above preferred embodiments; however, those skilled in the art can fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0039] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A potassium fluoride solution microfilter apparatus characterized by comprising: It includes: a bottom plate (1); a filter shell (4) arranged on the bottom plate (1); a plurality of filter cartridges (8) arranged in the filter shell (4); a microfiltration membrane (13) arranged in the filter cartridge (8) for filtering a potassium fluoride solution; a separation layer (14) arranged in the filter cartridge (8) for separating a liquid flow; a flow layer (16) arranged in the microfiltration membrane (13) for solution flow; a spiral column (17) arranged in the flow layer (16) for increasing the turbulent flow of the solution; a plurality of guide vanes (15) arranged in the flow layer (16), and the guide vanes (15) are located in the spiral channel of the spiral column (17), the guide vanes (15) are arc-shaped, for smooth solution flow; a conveying part (10) arranged above the filter cartridge (8) for conveying the solution; a discharge part (12) arranged below the filter cartridge (8) for discharging the separated liquid; a conveying pipe (18) arranged in the filter shell (4).

2. The potassium fluoride solution microfilter apparatus according to claim 1, wherein It also includes: a pretreatment frame (2) arranged on the bottom plate (1) beside the filter shell (4); a booster pump (9) arranged in the pretreatment frame (2); and one side of the conveying pipe (18) extends into the pretreatment frame (2) and is in communication with the outlet end of the booster pump (9).

3. The potassium fluoride solution microfilter apparatus of claim 2, wherein, It also includes: a feed pipe (3) in communication arranged at the top of the pretreatment frame (2); a filter screen frame (7) arranged at the top of the inner cavity of the pretreatment frame (2); a collecting hopper (6) arranged in the pretreatment frame (2) below the filter screen frame (7) for collecting the pretreated solution and uniformly falling.

4. The potassium fluoride solution microfilter apparatus of claim 1, wherein, The conveying part (10) includes: a first connecting pipe (103) in communication arranged above the filter cartridge (8); a second connecting pipe (102) in communication arranged on the first connecting pipe (103); a flow dividing valve (101) arranged on the second connecting pipe (102); and the other side of the conveying pipe (18) is in communication with the flow dividing valve (101).

5. The potassium fluoride solution microfilter apparatus of claim 1, wherein, The discharge part (12) includes: a third connecting pipe (125) in communication arranged below the filter cartridge (8) and in communication with the bottom of the flow layer (16); a first discharge pipe (124) in communication arranged on the filter cartridge (8) and in communication with the flow layer (16); a first control valve (123) arranged on the first discharge pipe (124); an output pipe (121) in communication arranged on the third connecting pipe (125); a second control valve (122) arranged on the output pipe (121).

6. The potassium fluoride solution microfilter apparatus of claim 1, wherein, It also includes: a plurality of fixing columns (11) arranged in the filter shell (4) and connected with the filter cartridge (8).

7. The potassium fluoride solution microfilter apparatus of claim 1, wherein, It also includes: a control panel (5) arranged on the bottom plate (1).

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