Sodium / potassium metal purification device

Abstract

The invention belongs to the technical field of metal purification, and provides a sodium / potassium metal purification device which comprises a supporting frame, a limiting assembly and a purification pipe are arranged outside the supporting frame, the purification pipe is installed on the outer surface of the supporting frame through the limiting assembly, the outer surface of the purification pipe communicates with a collecting piece, and a connecting plug is arranged at the rear end of the purification pipe. A first branch pipe and a second branch pipe oppositely communicate with the interior of the connecting plug, rubber pipelines are inserted into the outer surfaces of the first branch pipe and the second branch pipe, and the lower ends of the two rubber pipelines communicate with short straight branch pipes; through integrated design and in-situ operation (melting, gravity transfer, low-temperature solidification and fusing separation), operation is simple, convenient and safe, and pollution and exposure risks are reduced. The operation safety and the purity and quality of a final product (high-purity sodium / potassium) are remarkably improved, the equipment threshold and the operation cost are greatly reduced, and the purification of the high-purity sodium / potassium metal is easier to carry out in a conventional laboratory.

Description

Technical Field

[0001] The invention belongs to the technical field of metal purification, in particular to a sodium / potassium metal purification device. Background Art

[0002] Sodium (Na) and potassium (K), typical alkali metals, have important applications in new batteries (such as sodium-ion batteries and potassium-ion batteries), organic synthesis catalysts, high-temperature nuclear reactor coolants, and specialty alloys due to their excellent conductivity, low density, and strong reducing properties. However, metallic sodium and potassium are extremely reactive chemically. They rapidly oxidize and even burn when exposed to air, and react violently with water to produce hydrogen and explode. Therefore, their purification and storage must be carried out in an inert environment strictly isolated from oxygen and moisture, which places high demands on the design of the purification equipment.

[0003] The purification method commonly used in laboratories at present is to combine vacuum distillation with an inert atmosphere glove box. The crude metal is placed in a glove box, cut and melted under argon protection, and then the impurities are separated by vacuum distillation. However, this method has many disadvantages. On the one hand, the equipment cost is high, and high-purity inert gas (such as argon) needs to be continuously introduced to maintain the positive pressure in the glove box. The glove box itself is expensive, generally in the hundreds of thousands to millions level, and maintenance is complicated. On the other hand, it relies on the continuous introduction of high-purity inert gas or a complex vacuum system to ensure the purification environment, which makes it difficult for small laboratories to bear the corresponding costs and maintenance work, limiting the widespread application of sodium / potassium metal purification technology and the in-depth development of research.

[0004] Therefore, those skilled in the art have proposed a sodium / potassium metal purification device to solve the problems raised in the background art. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a sodium / potassium metal purification device to solve the problems in the background technology.

[0006] A sodium / potassium metal purification device, comprising:

[0007] The support frame has a limited position component on its outside

[0008] A purification tube is mounted on the outer surface of the support frame through a limiting assembly. The outer surface of the purification tube is connected to a collecting member. A connecting plug is provided at the rear end of the purification tube. Branch pipe 1 and branch pipe 2 are relatively connected inside the connecting plug. Rubber pipes are inserted into the outer surfaces of branch pipe 1 and branch pipe 2. The lower ends of the two rubber pipes are connected to short straight branches.

[0009] There are two beakers, each of which is filled with liquid paraffin, and the lower ends of the two short straight branches are placed inside the liquid paraffin in the two beakers respectively;

[0010] A sealing plug installed at the front end of the purification tube;

[0011] The heating platform is arranged below the purification tube and is used to heat the purification tube.

[0012] Preferably, the outer surfaces of the two rubber pipes are provided with water stop clamps, and the inner surface of the purification tube is provided with a plurality of protrusions, which are used to limit the sodium / potassium metal and slow down the flow rate of the sodium / potassium metal liquid.

[0013] Preferably, the collecting member includes a connecting tube connected to the outer surface of the purification tube, a limiting ring is provided on the outer surface of the connecting tube, a sealing rubber ring is provided inside the limiting ring, and the upper end of the sealing rubber ring is connected to the lower end of the connecting tube.

[0014] Preferably, the outer surface of the limiting ring is provided with several fixed plates, a connecting shaft is provided inside the fixing plate, a connecting ring is rotatably installed on the outer surface of the connecting shaft, the connecting ring extends into the interior of the limiting ring, an elliptical ring is installed on the outer surface of the connecting ring, the elliptical ring is located inside the limiting ring, and a driving plate is installed on the outer surface of the connecting ring.

[0015] Preferably, the lower end of the limiting ring is abutted against a mounting ring, and a plurality of elastic clips are provided on the outer surface of the mounting ring. The elastic clips are clamped on the upper end of the driving plate. A collecting tube passes through the inside of the mounting ring, and two clips are relatively provided on the outer surface of the collecting tube. A channel is provided between the two clips, and the long axis end of the elliptical ring abuts against the lower end of the clip.

[0016] Preferably, a filter plate is movably engaged with the upper end of the collecting tube, and the upper end of the filter plate is connected to the lower end of the sealing rubber ring.

[0017] Preferably, the limiting assembly includes a limiting frame, and a supporting ring and a threaded ring are respectively installed at both ends of the limiting frame, the front end of the supporting ring abuts against the outer surface of the support frame, the internal thread of the threaded ring is threadedly connected with a threaded rod, the threaded rod is threadedly connected to the threaded ring, the front end of the threaded rod abuts against the outer surface of the support frame, the rear end of the threaded rod is installed with a power assist ring, the rear end of the supporting ring is installed with a clamp, and the purification tube is clamped inside the clamp.

[0018] Preferably, it also includes a fixing part, which is used to limit the sealing plug. The fixing part also includes a fixing ring arranged on the outer surface of the purification tube. A plurality of elastic parts are arranged at the rear end of the sealing plug. A connecting ring is arranged at the rear end of the plurality of elastic parts. The connecting ring is connected to the fixing ring through a connecting screw.

[0019] Preferably, the outer surface of the purification tube is connected to a plug-in tube, a glass rod is inserted into the plug-in tube, and the glass rod extends into the interior of the purification tube.

[0020] Preferably, a latex tube is provided on the outer surface of the glass rod, the latex tube is sleeved on the outer surface of the plug-in tube, and the plug-in tube and the outer surface of the latex tube are threadedly connected with a cock.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention utilizes extremely low-temperature liquid ammonia to rapidly liquefy or even solidify the existing air within the device. This significantly reduces the gas partial pressure within the system, effectively achieving a preliminary, efficient "low-temperature vacuum pumping" without relying on a complex and expensive mechanical vacuum pump system. Furthermore, the vaporization of liquid nitrogen produces a large amount of low-temperature nitrogen. This high-density nitrogen displaces most of the air, establishing an inert environment dominated by low-pressure, relatively pure nitrogen. This process cleverly combines the principles of low-temperature condensation degassing and inert gas purging and displacement, and is combined with the use of water-stop clamps to clamp the rubber pipe. Without the use of a vacuum pump or requiring only an extremely low-specification vacuum pump (such as an initial pump), the low-oxygen / low-water environment required for high-purity inert atmosphere operation can be quickly and cost-effectively achieved. This is particularly suitable for operations involving alkali metals that are extremely sensitive to oxygen and moisture. This eliminates the high cost and maintenance of high-vacuum equipment, providing a simple, low-cost, and reliable method for sealing and isolating air, replacing glove boxes or complex high-vacuum sealing systems.

[0023] 2. Through its integrated design and in-situ operation (melting, gravity transfer, low-temperature solidification, and fusion separation), this invention allows for simple and safe operation, reducing contamination and exposure risks. This significantly improves operational safety and the purity and quality of the final product (high-purity sodium / potassium), significantly lowers equipment requirements and operating costs, and makes the purification of high-purity sodium / potassium metals more accessible in conventional laboratories.

[0024] 3. The present invention can disassemble the collection tube through simple rotation and pulling operations. This design makes the maintenance and component replacement of the entire device easier. The collection tube's quick disassembly and installation function allows the operation to be completed in a very short time when the collection tube needs to be replaced, such as when it is full, fails, or the filter plate needs to be cleaned, thereby improving the overall efficiency of metal purification. In addition, during the installation process, the sealing rubber ring is squeezed by the elliptical ring to enhance the sealing performance, effectively preventing the leakage of liquid sodium / potassium metal during the purification process and improving the sealing performance. Secondly, when the metal purification plan is adjusted and it is necessary to replace the collection tube of different specifications or materials to meet different product requirements, the quick disassembly and installation function can quickly meet this demand. The operator can quickly replace the collection tube, so that the purification device can quickly adapt to the new purification task and improve the flexibility and response speed of metal purification.

[0025] 4. The present invention utilizes a connecting tube and filter plate to allow liquid sodium / potassium metal to enter the collection tube smoothly, filtering out impurities during the process. This not only improves the purity of the collected liquid but also simplifies the collection process, making it more convenient. The detachable filter plate facilitates cleaning after collection, allowing for reuse, reducing costs while also ensuring the same filtration effect for the next use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the present invention from a first viewing angle;

[0027] Figure 2 This is a schematic diagram of the structure from a second viewing angle of the present invention;

[0028] Figure 3 This is a schematic structural diagram of the present invention from a third viewing angle;

[0029] Figure 4 is a cross-sectional view of the present invention;

[0030] Figure 5 A partial cross-sectional view of a collecting member of the present invention;

[0031] Figure 6 This is a schematic diagram of the collecting element separation structure of the present invention;

[0032] Figure 7 For the present invention Figure 6 A partial enlarged view of the middle part;

[0033] Figure 8 This is a schematic diagram of the overall structure of the fixing member of the present invention;

[0034] Figure 9 It is a schematic diagram of the overall structure of the present invention;

[0035] Figure 10 It is a schematic diagram of the overall structure of the present invention.

[0036] In the picture:

[0037] 1. Support frame; 2. Limiting assembly; 21. Limiting frame; 22. Retaining ring; 23. Threaded ring; 24. Threaded rod; 25. Power ring; 26. Clamping jaw; 3. Purification tube; 4. Collecting piece; 41. Connecting tube; 42. Limiting ring; 43. Sealing rubber ring; 44. Fixing plate; 45. Connecting shaft; 46. Driving plate; 47. Link; 48. Oval ring; 49. Mounting ring; 410. Elastic buckle; 411. Collecting tube; 412 , filter plate; 413, retaining ring; 414, channel; 5, connecting plug; 6, branch pipe 1; 7, branch pipe 2; 8, rubber pipe; 9, water stop clamp; 10, short straight branch pipe; 11, beaker; 12, heating table; 13, sealing plug; 14, protrusion; 15, fixing part; 151, fixing ring; 152, connecting ring; 153, elastic part; 154, connecting screw; 16, plug-in tube; 17, glass rod; 18, latex tube; 19, stopcock. DETAILED DESCRIPTION

[0038] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0039] Example 1

[0040] refer to Figures 1 to 4 The present invention provides a sodium / potassium metal purification device, comprising:

[0041] The support frame 1 has a limiting component 2 arranged on its exterior.

[0042] The purification tube 3 is mounted on the outer surface of the support frame 1 through a limiting assembly 2. The outer surface of the purification tube 3 is connected to the collecting member 4. A connecting plug 5 is provided at the rear end of the purification tube 3. The connecting plug 5 is relatively connected to a branch pipe 1 6 and a branch pipe 2 7. The outer surfaces of the branch pipes 1 6 and 2 7 are plugged with rubber pipes 8. The lower ends of the two rubber pipes 8 are connected to short straight branches 10. The purification tube 3, the connecting plug 5, the branch pipe 1 6, the branch pipe 2 7 and the short straight branch pipe 10 are all made of quartz.

[0043] There are two beakers 11, each of which is filled with liquid paraffin. The lower ends of the two short straight branches 10 are placed inside the liquid paraffin in the two beakers 11 respectively.

[0044] A sealing plug 13 is installed at the front end of the purification tube 3 and is made of ground quartz glass;

[0045] The heating platform 12 is disposed below the purification tube 3 and is used to heat the purification tube 3 .

[0046] The outer surfaces of the two rubber pipes 8 are both provided with water stop clamps 9, and the inner surface of the purification tube 3 is provided with a plurality of protrusions 14, which are used to limit the sodium / potassium metal and slow down the flow rate of the sodium / potassium metal liquid.

[0047] The limiting assembly 2 includes a limiting frame 21, and a butt ring 22 and a threaded ring 23 are respectively installed at both ends of the limiting frame 21. The front end of the butt ring 22 abuts against the outer surface of the support frame 1, and the internal thread of the threaded ring 23 is threadedly connected to a threaded rod 24. The threaded rod 24 is threadedly connected to the threaded ring 23. The front end of the threaded rod 24 abuts against the outer surface of the support frame 1, and the rear end of the threaded rod 24 is installed with a power assist ring 25. The rear end of the butt ring 22 is installed with a clamp 26, and the purification tube 3 is clamped inside the clamp 26.

[0048] Specific implementation method: First, the butt ring 22 is abutted against the outer surface of the support frame 1, and then the auxiliary ring 25 is used to rotate the threaded rod 24 so that the front end of the threaded rod 24 abuts against the outer surface of the support frame 1, thereby installing the clamp 26 on the outer surface of the support frame 1.

[0049] When purifying sodium / potassium metal, the device is first cleaned with aqua regia or anhydrous ethanol to remove impurities remaining inside the device, and then the purification tube 3 is installed in the clamp 26 for fixation. After that, sodium / potassium metal rinsed with ether is added to the inside of the purification tube 3, and the purification tube 3 is sealed with a sealing plug 13.

[0050] Then, liquid nitrogen is added to the purification tube 3 and the collecting part 4 through the branch pipe 16 until the collecting part 4 is filled with one-third of liquid nitrogen. The low temperature of the liquid nitrogen will rapidly cool the purification tube 3 and the collecting part 4, thereby being able to remove the air inside the device. The original air in the test tube will be liquefied or even solidified when it comes into contact with the ultra-low temperature. This greatly reduces the gas pressure in the system and initially evacuates the air. Secondly, the liquid nitrogen vaporizes to produce a large amount of cold nitrogen gas, but these gases have a high density and are extremely low in temperature. They will temporarily stay in the bottom area of ​​the device, forming a relatively low-pressure space. Then, the two short straight branches 10 are inserted into the liquid paraffin inside the two beakers 11. The liquid nitrogen continues to vaporize to produce nitrogen gas. As the pressure inside the system decreases due to air condensation and the nitrogen gas continues to generate, the gas in the system begins to be discharged outward through the short straight branch pipe 10 and bubble into the liquid paraffin. The liquid paraffin in the beaker 11 provides a liquid seal, allowing the gas to be discharged but preventing the external air from flowing back into the system. Paraffin wax has an extremely low vapor pressure and is an inert medium. After the liquid nitrogen is completely expelled, the device is preheated and the gas inside the device is exhausted. Once it is confirmed that the gas in the system has been largely replaced by nitrogen (i.e., the bubbling becomes very slow or the air is completely expelled), the rubber pipe 8 is clamped with a water stop clamp 9 to completely cut off the connection between the system and the outside world. At this point, the interior of the purification device is filled with a low-pressure, relatively pure nitrogen environment.

[0051] The crude metallic sodium / potassium in the purification tube 3 is heated using a heating table 12. The temperature is raised to approximately 105°C, which is higher than the melting point of Na or K, and the metal melts into a liquid. The entire apparatus is then slowly tilted. Due to its fluidity, the molten sodium / potassium flows from the bottom of the purification tube 3 into the interior of the collecting element 4 below under the action of gravity. The protrusions 14 provided inside the purification tube 3 can immobilize the sodium / potassium when it is initially added, and secondly, can slow down the flow rate of the sodium / potassium liquid when it is poured, thereby allowing more impurities to remain on the protrusions 14 and inside the purification tube 3, thereby improving the purity of the sodium / potassium liquid entering the collecting element 4.

[0052] The sodium / potassium enters the cooler collector 4, where the temperature difference between collector 4 and purification tube 3 causes the metal to solidify at a low temperature. The metal forms a dense, shiny solid. The device is then re-fixed vertically on the iron stand. Collector 4 is then removed, yielding highly pure, mirror-like metallic sodium / potassium.

[0053] This device uses its extremely low-temperature liquid ammonia to quickly liquefy or even solidify the original air in the device. This greatly reduces the gas partial pressure in the system, which is equivalent to achieving a preliminary and efficient "low-temperature vacuum pumping" without relying on a complex and expensive mechanical vacuum pump system. Secondly, the liquid nitrogen vaporizes to produce a large amount of low-temperature nitrogen. This nitrogen gas has a high density and replaces most of the air, establishing an inert environment dominated by low-pressure, relatively pure nitrogen. This process cleverly combines the two principles of low-temperature condensation degassing and inert gas purging and replacement, and is combined with the use of a water stop clamp 9 to clamp the rubber pipe 8. Without using a vacuum pump or only requiring an extremely low-specification vacuum pump such as an initial pump, the low-oxygen / low-water environment required for high-purity inert atmosphere operation can be achieved quickly and at a low cost. It is particularly suitable for alkali metal operations that are extremely sensitive to oxygen / moisture. This eliminates the high cost and maintenance of high-vacuum equipment, providing a simple, low-cost, and reliable method for sealing and isolating air, replacing glove boxes or complex high-vacuum sealing systems. Furthermore, through its integrated design and in-situ melting, gravity transfer, low-temperature solidification, and fusing separation, it offers simple and safe operation, reducing contamination and exposure risks. This significantly improves operational safety and the purity and quality of the final high-purity sodium / potassium product, significantly lowering equipment requirements and operating costs, making the purification of high-purity sodium / potassium metals more accessible in conventional laboratories.

[0054] refer to Figure 10 In this embodiment, the middle section of branch pipe 2 7 is connected to a buffer ball, which can buffer the potential pressure shock problem caused by the rapid phase change of buffer nitrogen when adding liquid ammonia, ensure that the gas replacement process proceeds smoothly, the liquid seal is effective, and thus ensure the safe completion of the final purification step.

[0055] Example 2

[0056] refer to Figures 5 to 7, which is the second embodiment of the present invention, further includes a collecting part 4 on the basis of the first embodiment. The collecting part 4 includes a connecting tube 41 connected to the outer surface of the purification tube 3. A limiting ring 42 is provided on the outer surface of the connecting tube 41. A sealing rubber ring 43 is provided inside the limiting ring 42. The upper end of the sealing rubber ring 43 is connected to the lower end of the connecting tube 41.

[0057] Several fixing plates 44 are provided on the outer surface of the limiting ring 42, and a connecting shaft 45 is provided inside the fixing plate 44. A connecting ring 47 is rotatably installed on the outer surface of the connecting shaft 45, and the connecting ring 47 extends into the interior of the limiting ring 42. An elliptical ring 48 is installed on the outer surface of the connecting ring 47. The elliptical ring 48 is located inside the limiting ring 42, and a driving plate 46 is installed on the outer surface of the connecting ring 47.

[0058] The lower end of the limiting ring 42 is in contact with the mounting ring 49, and a number of elastic clips 410 are provided on the outer surface of the mounting ring 49. The elastic clips 410 are clamped to the upper end of the driving plate 46. A collecting tube 411 runs through the inside of the mounting ring 49, and two clips 413 are relatively provided on the outer surface of the collecting tube 411. A channel 414 is provided between the head and tail of the two clips 413, and the long axis end of the elliptical ring 48 is in contact with the lower end of the clip 413.

[0059] The upper end of the collecting tube 411 is movably engaged with a filter plate 412 , the upper end of the filter plate 412 is connected to the lower end of the sealing rubber ring 43 , and the upper portion of the collecting tube 411 is constructed with a concave tube diameter.

[0060] Specific implementation: When installing the collection tube 411, first snap the filter plate 412 onto the upper end of the collection tube 411. Next, dock the mounting ring 49 onto the lower end of the limiting ring 42. During this process, the upper portion of the collection tube 411, the filter plate 412, the snap ring 413, and the channel 414 will all enter the interior of the limiting ring 42. When these components enter, the elliptical ring 48, which was originally perpendicular to the collection tube 411, will pass through the channel 414 and enter the recessed diameter of the collection tube 411. At the same time, the filter plate 412 will dock with the sealing rubber ring 43, and the collection tube 411 will also be connected to the connecting tube 41. Subsequently, the collection tube 411 is rotated 90°, so that the channel 414 is offset from the elliptical ring 48, and the snap ring 413 snaps onto the elliptical ring 48, forming a mechanical interlock. Next, the drive plate 46 is rotated, causing the connecting ring 47 to rotate on the outer surface of the connecting shaft 45, thereby driving the long axis end of the elliptical ring 48 to tilt upward, causing it to press against the retaining ring 413, thereby squeezing the sealing rubber ring 43, forming an axial preload force on the sealing rubber ring 43, thereby improving the sealing performance. Finally, the drive plate 46 is placed in the elastic buckle 410 to secure the drive plate 46.

[0061] When collecting liquid sodium / potassium metal, the liquid sodium / potassium metal passes through the connecting pipe 41 and the filter plate 412 to filter impurities and then enters the collection pipe 411. After the collection is completed, the elastic buckle 410 is pulled outward to release the limit on the drive plate 46, and the elliptical ring 48 returns to the vertical state. Then the collection pipe 411 is rotated 90 degrees, and the channel 414 is connected with the elliptical ring 48 again, so that the collection pipe 411 is disassembled, and the filter plate 412 can be disassembled for cleaning for next use.

[0062] The collection tube 411 can be disassembled with a simple rotation and pull operation, making maintenance and component replacement of the entire device much easier. The quick removal and installation function of the collection tube 411 allows for quick replacement of the collection tube 411, such as when it is full, malfunctioning, or when the filter plate 412 needs to be cleaned, thereby improving the overall efficiency of metal purification. Furthermore, during installation, the elliptical ring 48 squeezes the sealing rubber ring 43, enhancing the seal and effectively preventing leakage of liquid sodium / potassium metal during the purification process. Furthermore, when the metal purification plan needs to be adjusted and the collection tube 411 of different specifications or materials needs to be replaced to meet different product requirements, the quick removal and installation function can quickly meet this need. Operators can quickly replace the collection tube 411, allowing the purification device to quickly adapt to new purification tasks and improving the flexibility and responsiveness of metal purification.

[0063] The arrangement of connecting tube 41 and filter plate 412 allows the liquid sodium / potassium metal to flow smoothly into collection tube 411, filtering out impurities along the way. This not only improves the purity of the collected liquid but also simplifies the collection process, making it more convenient. The detachable design of filter plate 412 facilitates cleaning after collection, allowing for reuse, reducing costs while also ensuring the same filtration effect for the next use.

[0064] Another embodiment: the glass tube can be directly connected to the purification tube 3. After the liquefied sodium / potassium enters the glass tube, the glass is melted and the switch port is melted to be sealed, thereby obtaining pure sodium / potassium.

[0065] Example 3

[0066] refer to Figure 8 The third embodiment of the present invention, based on the first embodiment, further includes a fixing member 15, which is used to limit the sealing plug 13. The fixing member 15 also includes a fixing ring 151 arranged on the outer surface of the purification tube 3. The rear end of the sealing plug 13 is provided with a plurality of elastic members 153, and the rear end of the plurality of elastic members 153 is provided with a connecting ring 152. The connecting ring 152 is connected to the fixing ring 151 through a connecting screw 154.

[0067] Specific implementation: During the equipment assembly process, the sealing plug 13 is inserted into the opening of the purification tube 3. The connecting screw 154 is then initially screwed in to preliminarily connect the connecting ring 152 with the fixing ring 151, providing a preliminary fixing force and pushing the sealing plug 13 backward so that the sealing plug 13 enters the interior of the purification tube 3. At this time, the elastic member 153 is deformed under pressure, storing elastic potential energy and forming a reverse thrust, thereby enhancing the close fit between the sealing plug 13 and the inner wall of the purification tube 3 and improving the sealing effect. At the same time, the tightening of the connecting screw 154 further shortens the distance between the connecting ring 152 and the fixing ring 151, strengthening the sealing force. When the pressure in the purification tube 3 increases, the forward thrust on the sealing plug 13 also increases, which further compresses the elastic member 153, causing it to generate a greater reverse thrust, thereby offsetting the influence of the fluid pressure, ensuring the close fit between the sealing plug 13 and the inner wall of the purification tube 3, and preventing leakage inside the purification device, thereby improving the sealing performance inside the purification device.

[0068] Example 4

[0069] refer to Figure 9 , a fourth embodiment of the present invention comprises:

[0070] The support frame 1 has a limiting component 2 arranged on its exterior.

[0071] The purification tube 3 is mounted on the outer surface of the support frame 1 through a limiting assembly 2. The outer surface of the purification tube 3 is connected to the collecting member 4. A connecting plug 5 is provided at the rear end of the purification tube 3. The connecting plug 5 is relatively connected to a branch pipe 1 6 and a branch pipe 2 7. The outer surfaces of the branch pipe 1 6 and the branch pipe 2 7 are plugged with rubber pipes 8. The lower ends of the two rubber pipes 8 are connected to a short straight branch pipe 10.

[0072] There are two beakers 11, each of which is filled with liquid paraffin. The lower ends of the two short straight branches 10 are placed inside the liquid paraffin in the two beakers 11 respectively.

[0073] A sealing plug 13 is installed at the front end of the purification tube 3;

[0074] The heating platform 12 is disposed below the purification tube 3 and is used to heat the purification tube 3 .

[0075] The outer surfaces of the two rubber pipes 8 are both provided with water stop clamps 9, and the inner surface of the purification tube 3 is provided with a plurality of protrusions 14, which are used to limit the sodium / potassium metal and slow down the flow rate of the sodium / potassium metal liquid.

[0076] The outer surface of the purification tube 3 is connected to a plug-in tube 16 , a glass rod 17 is inserted into the plug-in tube 16 , and the glass rod 17 extends into the interior of the purification tube 3 .

[0077] A latex tube 18 is provided on the outer surface of the glass rod 17 , and the latex tube 18 is sleeved on the outer surface of the plug tube 16 . A cock 19 is threadedly connected to the outer surfaces of the plug tube 16 and the latex tube 18 .

[0078] Specific implementation: Some of the specific implementations are the same as in Example 1. Before implementation, a latex tube 18 is tightly fitted over the outer surface of the plug tube 16. A stopcock 19 is tightened, compressing and deforming the latex tube 18, thereby tightly enveloping and sealing the gap between the outer wall of the plug tube 16 and the glass rod 17. This ensures that the interior of the purification tube 3 is isolated from the outside air while maintaining the adjustable glass rod 17, forming a sealed space filled with inert gas.

[0079] During the purification process, the glass rod 17 can be pulled up or rotated within the range permitted by the stopcock 19 to gently stir the molten metal in the tube. This helps break up any surface oxide film that may have formed, promotes even heat distribution, and allows suspended micro-impurities to better contact, coalesce, and settle, while preventing the high-purity metal from being encapsulated by impurities, thereby improving the effectiveness of sodium / potassium purification.

[0080] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A sodium / potassium metal purification device, characterized in that: include: A support frame (1) is provided with a limiting component (2) on the outside thereof; A purification tube (3) is mounted on the outer surface of the support frame (1) through a limiting assembly (2); the outer surface of the purification tube (3) is connected to a collecting member (4); a connecting plug (5) is provided at the rear end of the purification tube (3); a branch pipe 1 (6) and a branch pipe 2 (7) are relatively connected inside the connecting plug (5); the outer surfaces of the branch pipe 1 (6) and the branch pipe 2 (7) are both plugged with rubber pipes (8); the lower ends of the two rubber pipes (8) are both connected to short straight branch pipes (10); There are two beakers (11), each of which contains liquid paraffin. The lower ends of the two short straight branch pipes (10) are placed inside the liquid paraffin in the two beakers (11). A sealing plug (13) is installed at the front end of the purification tube (3); The heating platform (12) is arranged below the purification tube (3) and is used to heat the purification tube (3).

2. A sodium / potassium metal purification device as claimed in claim 1, characterized in that: The outer surfaces of the two rubber pipes (8) are both provided with water stop clamps (9), and the inner surface of the purification pipe (3) is provided with a plurality of protrusions (14), which are used to limit the sodium / potassium metal and slow down the flow rate of the sodium / potassium metal liquid.

3. The sodium / potassium metal purification device according to claim 1, characterized in that: The collecting member (4) comprises a connecting tube (41) connected to the outer surface of the purification tube (3); a limiting ring (42) is provided on the outer surface of the connecting tube (41); a sealing rubber ring (43) is provided inside the limiting ring (42); the upper end of the sealing rubber ring (43) is connected to the lower end of the connecting tube (41).

4. A sodium / potassium metal purification device as claimed in claim 3, characterized in that: The outer surface of the limiting ring (42) is provided with a plurality of fixing plates (44), the interior of the fixing plate (44) is provided with a connecting shaft (45), the outer surface of the connecting shaft (45) is rotatably mounted with a connecting ring (47), the connecting ring (47) extends into the interior of the limiting ring (42), the outer surface of the connecting ring (47) is mounted with an elliptical ring (48), the elliptical ring (48) is located inside the limiting ring (42), and the outer surface of the connecting ring (47) is mounted with a driving plate (46).

5. A sodium / potassium metal purification device as claimed in claim 4, characterized in that: The lower end of the limiting ring (42) is in contact with a mounting ring (49); the outer surface of the mounting ring (49) is provided with a plurality of elastic snap fasteners (410); the elastic snap fasteners (410) are snap-connected to the upper end of the driving plate (46); a collecting tube (411) is passed through the interior of the mounting ring (49); two snap fasteners (413) are arranged on the outer surface of the collecting tube (411); a channel (414) is provided between the head and tail of the two snap fasteners (413); and the long axis end of the elliptical ring (48) is in contact with the lower end of the snap fastener (413).

6. A sodium / potassium metal purification device as claimed in claim 5, characterized in that: The upper end of the collecting tube (411) is movably engaged with a filter plate (412), and the upper end of the filter plate (412) is connected to the lower end of the sealing rubber ring (43).

7. The sodium / potassium metal purification device according to claim 1, characterized in that: The limiting assembly (2) includes a limiting frame (21), and a butt ring (22) and a threaded ring (23) are respectively installed at both ends of the limiting frame (21). The front end of the butt ring (22) is in contact with the outer surface of the support frame (1), and the threaded ring (23) is internally threadedly connected with a threaded rod (24). The threaded rod (24) is threadedly connected to the threaded ring (23), and the front end of the threaded rod (24) is in contact with the outer surface of the support frame (1). The rear end of the threaded rod (24) is installed with a power-assisting ring (25), and the rear end of the butt ring (22) is installed with a clamp (26), and the purification tube (3) is clamped inside the clamp (26).

8. The sodium / potassium metal purification device according to claim 1, characterized in that: The invention also includes a fixing member (15), which is used to limit the sealing plug (13). The fixing member (15) also includes a fixing ring (151) arranged on the outer surface of the purification tube (3). The rear end of the sealing plug (13) is provided with a plurality of elastic members (153). The rear ends of the plurality of elastic members (153) are provided with connecting rings (152). The connecting ring (152) is connected to the fixing ring (151) through a connecting screw (154).

9. The sodium / potassium metal purification device according to claim 1, characterized in that: The outer surface of the purification tube (3) is connected to a plug-in tube (16), a glass rod (17) is inserted into the plug-in tube (16), and the glass rod (17) extends into the interior of the purification tube (3).

10. A sodium / potassium metal purification device according to claim 9, characterized in that: The outer surface of the glass rod (17) is provided with a latex tube (18), and the latex tube (18) is sleeved on the outer surface of the plug tube (16). The outer surfaces of the plug tube (16) and the latex tube (18) are threadedly connected with a cock (19).

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