A slurry separation device

Abstract

This application relates to the field of sodium fluoride production technology, specifically disclosing a slurry separation device, including a first cylinder, a second cylinder, and a flow-limiting barrier. The second cylinder is installed above the first cylinder using the flow-limiting barrier. A stirring section is installed on the first cylinder, a slurry feed section is provided above the stirring section, a circulating liquid feed section is provided below the stirring section, and a heavy phase discharge section is provided at the bottom of the first cylinder. A light phase discharge section is installed on the second cylinder. This application can quickly separate silica and sodium fluoride according to their settling rates during the circulation process. Furthermore, the slurry separation device provided by this application is easy to disassemble and clean, and has good practical performance.

Description

Technical Field

[0001] This application relates to the field of sodium fluoride production technology, and specifically discloses a slurry separation device. Background Technology

[0002] Sodium fluoride production typically uses fluorine- and silicon-containing substances as raw materials. These are mixed with circulating mother liquor or water to form a slurry of a certain concentration. Then, a sodium carbonate solution is added to react with the slurry. The final pH value of the reaction slurry is controlled, resulting in a mixed slurry containing sodium fluoride crystals, silica, and mother liquor. The sodium fluoride crystals then need to be separated from the mixed slurry. However, due to the inherent properties of sodium fluoride crystals and silica, existing conventional separation equipment still produces sodium fluoride with some silica inclusions, thus affecting the quality of the sodium fluoride product.

[0003] To address the aforementioned problems, this application discloses a slurry diversion device. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this application discloses a slurry separation device.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a slurry separation device, comprising a first cylinder, a second cylinder, and a flow-limiting barrier, wherein the second cylinder is installed above the first cylinder using the flow-limiting barrier; a stirring section is installed on the first cylinder, a slurry feed section is provided above the stirring section on the first cylinder, a circulating liquid feed section is provided below the stirring section on the first cylinder, and a heavy phase discharge section is provided at the bottom of the first cylinder; a light phase discharge section is installed on the second cylinder.

[0006] More preferably, the flow-limiting and blocking part includes an H-shaped mounting base and an annular flow-limiting mesh plate. The upper and lower sides of the H-shaped mounting base are respectively provided with a first flange and a second flange. The top of the second cylinder is provided with a third flange, and the top of the first cylinder is provided with a fourth flange. The first flange and the third flange are fixed by bolts, and the second flange and the fourth flange are fixed by bolts.

[0007] An annular stepped groove is provided above the horizontal part of the H-shaped mounting base, and the annular flow-limiting mesh plate is fixed in the annular stepped groove by bolts.

[0008] More preferably, the stirring part includes an annular seat and a drive motor. The annular seat has several grooves arranged in a circular array along its edge. A transmission box is located at the center of the annular seat. A first sealed bearing is provided inside the annular seat corresponding to the transmission box. A stirring paddle passes through the first sealed bearing, and a first conical tooth is provided at the top of the stirring paddle. A second sealed bearing is provided on the side of the transmission box. The drive motor is located outside the first cylinder and its output shaft passes through the second sealed bearing to the inside of the transmission box. The output shaft of the drive motor is equipped with a second conical tooth that meshes with the first conical tooth inside the transmission box.

[0009] More preferably, the circulating liquid feed section is inclinedly disposed on the first cylinder.

[0010] More preferably, an electromagnetic valve is installed at the connection between the heavy phase discharge section and the first cylinder.

[0011] A further preferred embodiment is that a flow detector is installed at the connection between the light phase discharge section and the second cylinder.

[0012] This application achieves the following beneficial effects:

[0013] This application can quickly separate silica and sodium fluoride according to their settling rates during the circulation process. Furthermore, the slurry separation device provided by this application is easy to disassemble and clean, making it highly practical.

[0014] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures shown in the description and the accompanying drawings. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the disclosure of this application and, together with the specification, serve to explain the principles of this disclosure.

[0016] Figure 1 This is a schematic diagram of the overall structure disclosed in this application;

[0017] In the diagram: 10. First cylinder; 11. Stirring section; 111. Annular seat; 1111. Tank; 112. Drive motor; 1121. Second bevel gear; 113. Transmission box; 1131. First sealed bearing; 1132. Second sealed bearing; 114. Stirring paddle; 1141. First bevel gear; 12. Slurry feed section; 13. Circulating liquid feed section; 14. Heavy phase discharge section; 15. Solenoid valve; 16. Fourth flange;

[0018] 20. Second cylinder; 21. Light phase discharge section; 22. Third flange; 23. Flow detector;

[0019] 30. Flow limiting and blocking part; 31. H-shaped mounting base; 311. First flange; 312. Second flange; 313. Annular stepped groove; 32. Annular flow limiting mesh plate; 33. Bolt. Detailed Implementation

[0020] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0021] In the description of this application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the component or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Example

[0022] To address the issue that sodium fluoride separated by conventional separation equipment in existing technologies still contains some silica, resulting in low-quality sodium fluoride products, this paper refers to... Figure 1 As shown, in some embodiments, this application discloses a slurry separation device, including a first cylinder 10, a second cylinder 20, and a flow-limiting barrier 30. The second cylinder 20 is installed above the first cylinder 10 using the flow-limiting barrier 30. A stirring section 11 is installed on the first cylinder 10. A slurry feed section 12 is provided above the stirring section 11 on the first cylinder 10. A circulating liquid feed section 13 is provided below the stirring section 11 on the first cylinder 10. A heavy phase discharge section 14 is provided at the bottom of the first cylinder 10. A light phase discharge section 21 is installed on the second cylinder 20.

[0023] In specific implementation, circulating liquid is first introduced into the first cylinder 10 through the circulating liquid feed section 13 until circulating liquid is discharged from the light phase discharge section 21. After that, the injection speed of the circulating liquid is controlled, and then sodium fluoride slurry is introduced into the first cylinder 10 through the slurry feed section 12. The sodium fluoride crystals and silicon dioxide in the first cylinder 10 are stirred and dispersed by the stirring section 11. Under the rising swirling action of the circulating liquid, silicon dioxide will rise with the circulating liquid and be discharged from the light phase discharge section 21 through the diversion of the flow limiting and blocking section 30, while sodium fluoride crystals will descend in the circulating liquid and be discharged from the heavy phase discharge section 14.

[0024] Furthermore, during the separation process described above, the rate at which silica descends in the static circulating liquid must be less than the rate at which the circulating liquid rises, which in turn must be less than the rate at which sodium fluoride crystals descend in the static circulating liquid.

[0025] In one specific embodiment, the flow-limiting and blocking part 30 of this application includes an H-shaped mounting base 31 and an annular flow-limiting mesh plate 32. The upper and lower sides of the H-shaped mounting base 31 are respectively provided with a first flange 311 and a second flange 312. The top of the second cylinder 20 is provided with a third flange 22, and the top of the first cylinder 10 is provided with a fourth flange 16. The first flange 311 and the third flange 22 are fixed by bolts 33, and the second flange 312 and the fourth flange 16 are fixed by bolts 33. Based on this method, the first cylinder 10 and the second cylinder 20 can be easily disassembled, which facilitates the separate cleaning of the first cylinder 10 and the second cylinder 20 in the later stage.

[0026] An annular stepped groove 313 is provided above the horizontal part of the H-shaped mounting base 31. The annular flow limiting mesh plate 32 is fixed in the annular stepped groove 313 by bolts 33. Based on this method, the annular flow limiting mesh plate 32 can be quickly disassembled, which facilitates the cleaning of the annular flow limiting mesh plate 32 in the future.

[0027] In one specific embodiment, the stirring unit 11 of this application includes an annular seat 111 and a drive motor 112. The annular seat 111 has several grooves 1111 arranged in a circular array along its edge. A transmission box 113 is located at the center of the annular seat 111. A first sealed bearing 1131 is provided inside the annular seat 111 corresponding to the transmission box 113. A stirring paddle 114 passes through the first sealed bearing 1131, and the top of the stirring paddle 114 has a first conical tooth 1141. A second sealed bearing 112 is provided on the side of the transmission box 113. 32. The drive motor 112 is located outside the first cylinder 10 and its output shaft passes through the second sealed bearing 1132 to the inside of the transmission box 113. The output shaft of the drive motor 112 is equipped with a second bevel tooth 1121 that meshes with the first bevel tooth 1141 inside the transmission box 113. When stirring the sodium fluoride slurry, the drive motor 112 drives the second bevel tooth 1121 to rotate the first bevel tooth 1141. At this time, the stirring paddle 114 will rotate together. During this process, the sodium fluoride crystals and silicon dioxide will be separated.

[0028] In one specific embodiment, the circulating liquid feed section 13 is inclinedly disposed on the first cylinder 10, so that the circulating liquid has an upward velocity, thereby forming a slowly rising vortex, which is beneficial to the subsequent separation of silica and sodium fluoride crystals.

[0029] A solenoid valve 15 is installed at the connection between the heavy phase discharge section 14 and the first cylinder 10. When the separation of silica in the sodium fluoride slurry is completed, the solenoid valve 15 is opened to discharge the sodium fluoride crystals from the first cylinder 10.

[0030] In order to accurately monitor the separation of silicon dioxide and sodium fluoride crystals, a flow detector 23 is installed at the connection between the light phase discharge section 21 and the second cylinder 20 of this application.

[0031] In the description of this specification, the references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The above embodiments are only for illustrating the technical concept and features of this application, and are intended to enable those skilled in the art to understand the content of this application and implement it accordingly. They should not be used to limit the scope of protection of this application. All equivalent changes or modifications made in accordance with the spirit and essence of this application should be included within the scope of protection of this application.

Claims

1. A slurry separation device, characterized by, It includes a first cylinder (10), a second cylinder (20) and a flow-limiting barrier (30). The second cylinder (20) is installed above the first cylinder (10) by means of the flow-limiting barrier (30). A stirring part (11) is installed on the first cylinder (10). A slurry feed part (12) is provided above the stirring part (11) on the first cylinder (10). A circulating liquid feed part (13) is provided below the stirring part (11) on the first cylinder (10). A heavy phase discharge part (14) is provided at the bottom of the first cylinder (10). A light phase discharge part (21) is installed on the second cylinder (20).

2. A slurry separation device according to claim 1, wherein, The flow-limiting and blocking part (30) includes an H-shaped mounting base (31) and an annular flow-limiting mesh plate (32). The upper and lower sides of the H-shaped mounting base (31) are respectively provided with a first flange (311) and a second flange (312). The top of the second cylinder (20) is provided with a third flange (22). The top of the first cylinder (10) is provided with a fourth flange (16). The first flange (311) and the third flange (22) are fixed by bolts (33). The second flange (312) and the fourth flange (16) are fixed by bolts (33). The H-shaped mounting base (31) has an annular stepped groove (313) above its horizontal portion, and the annular flow-limiting mesh plate (32) is fixed in the annular stepped groove (313) by bolts (33).

3. A slurry separation device according to claim 1, wherein, The stirring unit (11) includes an annular seat (111) and a drive motor (112). The annular seat (111) has several grooves (1111) arranged in a circular array along its edge. A transmission box (113) is located at the center of the annular seat (111). A first sealed bearing (1131) is located inside the annular seat (111) corresponding to the transmission box (113). A stirring paddle (114) passes through the first sealed bearing (1131) vertically. The top of the transmission box (114) is provided with a first bevel tooth (1141), the side of the transmission box (113) is provided with a second sealed bearing (1132), the drive motor (112) is located outside the first cylinder (10) and its output shaft passes through the second sealed bearing (1132) to the inside of the transmission box (113), and the output shaft of the drive motor (112) is equipped with a second bevel tooth (1121) that meshes with the first bevel tooth (1141) inside the transmission box (113).

4. A slurry separation device according to claim 1, wherein The circulating liquid feed section (13) is inclinedly arranged on the first cylinder (10).

5. The slurry separation device according to claim 1, characterized in that, An electromagnetic valve (15) is installed at the connection between the heavy phase discharge section (14) and the first cylinder (10).

6. A slurry separation device according to claim 1, wherein A flow detector (23) is installed at the connection between the light phase discharge section (21) and the second cylinder (20).

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