A multi-stage continuous dissolution apparatus

Abstract

The application discloses a kind of multistage continuous dissolving device, belong to chemical dissolving technical field, comprising: dissolving box, its inside is provided with multiple partitions, multiple baffles and multiple overflow plates, partition, baffle and overflow plate are separated into multistage reaction chamber with the inner cavity of dissolving box together;Cover plate, detachably set in the top of dissolving box;Multiple stirring mechanisms are respectively installed in each reaction chamber of dissolving box;Dissolving solution in the dissolving box of the application is according to the path of "baffle bottom passage, overflow plate upper overflow" and gradually baffling travel, fundamentally realizes uranium concentrate and nitric acid continuous feeding, continuous reaction, continuous discharge, completely discards the operation mode of traditional batch dissolving and needs to start and stop batch by batch, batch by batch material transfer, eliminates batch waiting and auxiliary time consumption, and the dissolving efficiency is greatly improved, in addition, without frequent batch material transfer, start and stop equipment and other repetitive operations, greatly reduce the number of on-site personnel, reduce labor intensity and operation cost.

Description

Technical Field

[0001] This invention relates to the field of chemical dissolution technology, and more specifically, to a multi-stage continuous dissolution apparatus. Background Technology

[0002] Uranium purification mainly includes the dissolution, extraction purification, concentration and denitrification, and hydration reduction of uranium concentrates. Currently, the dissolution process in uranium purification commonly employs acid dissolution, where uranium concentrates (such as uranium octoxide) are dissolved in nitric acid to form a dissolution solution before proceeding to the next step.

[0003] Currently, the dissolving process generally adopts a batch intermittent dissolving process, using conventional tank containers. Although the equipment has a simple structure and high maturity, it also has many shortcomings: the dissolving process takes a long time, and the next batch can only be dissolved after one batch is completely dissolved, resulting in low dissolving production efficiency and requiring a lot of manual operation, which is labor-intensive; on the other hand, to increase production capacity, the dissolving equipment used is large in size, occupies a large area, is inconvenient to operate, and has high investment costs.

[0004] Therefore, it is necessary to provide a multi-stage continuous dissolution apparatus to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-stage continuous dissolution apparatus to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A multi-stage continuous dissolution apparatus, comprising: The dissolving tank is equipped with multiple partitions, multiple baffles and multiple overflow plates inside. The partitions, baffles and overflow plates together divide the inner cavity of the dissolving tank into multiple reaction chambers. The bottoms of two adjacent reaction chambers separated by the baffles are connected, and the upper parts of two adjacent reaction chambers separated by the overflow plate are connected. The dissolved liquid flows through the bottom of the baffles and overflows through the upper part of the overflow plate, and flows continuously through the baffles in a step-by-step manner. A cover plate is detachably mounted on the top of the dissolving tank, and the cover plate is provided with a feed port communicating with the reaction chamber of the dissolving tank; Multiple stirring mechanisms are installed in each reaction chamber of the dissolving tank, and the stirring mechanisms are detachably connected to the cover plate.

[0007] Furthermore, a settling tank is provided at the end of the dissolving tank. The inner wall of the dissolving tank has an opening that communicates with the inside of the settling tank. The bottom of the settling tank is provided with a discharge pipe. The dissolved liquid in the dissolving tank enters the settling tank after passing through multiple reaction chambers.

[0008] Furthermore, an arc-shaped jacket is fitted to the outer wall of the dissolving tank, and an inlet pipe and an outlet pipe are respectively installed on the side of the arc-shaped jacket. A condensate drain pipe is provided at the bottom of the arc-shaped jacket.

[0009] Furthermore, the stirring mechanism includes: A stirring rod is provided with multiple detachable mounting sleeves, and the outer wall of the mounting sleeves is provided with multiple stirring blades.

[0010] Furthermore, the upper end of the cover plate is equipped with multiple driving components, and the lower end of the cover plate is rotatably connected to a rotating shaft connected to the output end of the driving components. The rotating shaft is detachably connected to the stirring rod.

[0011] Furthermore, the lower end of the rotating shaft is provided with a first square groove, and the upper end of the stirring rod is slidably inserted with a first square rod that matches the first square groove. The first square rod is provided with a limiting hole, and the rotating shaft is provided with a limiting component for fixing the first square rod.

[0012] Furthermore, the limiting component includes an elastic element disposed on the outer wall of the rotating shaft, and a pull plate is disposed at the other end of the elastic element. A limiting rod is disposed on the pull plate, and one end of the limiting rod slides into the first square groove, and the end of the limiting rod is provided as an inclined surface.

[0013] Furthermore, each of the reaction chambers in the dissolving tank is provided with a support base, and a connecting shaft is rotatably connected to the support base via a bearing. The top of the connecting shaft is provided with a second square groove, and the bottom of the stirring rod is provided with a second square rod that matches the second square groove.

[0014] Furthermore, the outer wall of the stirring rod is provided with a plurality of fixing holes along the vertical direction, and the mounting sleeve is provided with a through connecting hole that is adapted to the fixing holes.

[0015] Furthermore, the outer wall of the stirring rod is provided with a limiting strip, and the inner wall of the mounting sleeve is provided with a sliding groove that is adapted to slide with the limiting strip.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention divides the internal cavity into multiple continuous reaction chambers through a combination of partitions, baffles, and overflow plates in the dissolution tank. The dissolving liquid flows through the baffles at the bottom and overflows at the top, which is a continuous dissolution process. This fundamentally realizes the continuous feeding, continuous reaction, and continuous discharge of uranium enrichment and nitric acid, completely eliminating the traditional intermittent dissolution operation mode that requires batch start-up and batch transfer, and eliminating waiting time and auxiliary time between batches. The bottom-flow and top-flow deflection path ensures uniform and dead-angle flow of the liquid, significantly improving dissolution efficiency. The multi-stage reaction chambers greatly extend the residence time of the liquid in the dissolution tank, keeping the concentration, composition, and reaction degree of the dissolved liquid constant and uniform. This ensures a continuous and stable production process, significantly improving the production efficiency and product stability of the uranium purification and dissolution process.

[0017] 2. In addition, there is no need to frequently perform repetitive operations such as batch material transfer and equipment start-up and shutdown, which greatly reduces the number of on-site personnel, reduces labor intensity and operating costs, and can also eliminate errors and fluctuations caused by human operation to a certain extent, making the production process more controllable and stable, and improving the overall level of the production line.

[0018] 3. In addition, the stirring mechanisms in each reaction chamber operate synchronously to stir and dissolve the liquid in each reaction chamber, making the dissolution reaction more thorough and the material mixing more uniform. The detachable design of the cover plate and stirring mechanism allows for quick observation, cleaning, replacement and maintenance of vulnerable parts inside the equipment. The maintenance operation is simple and efficient, extending the service life of the equipment, reducing maintenance costs, and making it highly practical.

[0019] 4. This dissolving device adopts a multi-stage baffle integrated structure, replacing the combination configuration of single or multiple intermittent dissolving tanks in the traditional process with a single integrated device. Under the same capacity requirements, the total volume of this equipment is significantly reduced and the floor space is greatly reduced, directly reducing the initial investment in equipment procurement and processing, and is more suitable for the intensive construction needs of industrial production lines. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the external structure of the continuous dissolution apparatus of the present invention; Figure 2 This is a schematic diagram of the internal structure of the melting tank after the cover plate has been removed according to the present invention; Figure 3 This is a top view of the internal structure of the dissolving tank of the present invention; Figure 4 This is a three-dimensional structural schematic diagram of the dissolving tank of the present invention, viewed in cross-section from one side. Figure 5 This is a three-dimensional structural schematic diagram of the melting tank of the present invention, viewed in cross-section from the other side. Figure 6 This is a schematic diagram of the stirring mechanism of the present invention in the separated state; Figure 7 for Figure 6 Enlarged structural diagram at point A in the middle; Figure 8 for Figure 6 Enlarged structural diagram at point B; Figure 9 This is a schematic diagram of the structure of the mounting sleeve and stirring blade of the present invention; Figure 10 This is a schematic diagram of the bottom view structure of the cover plate of the present invention; Figure 11 for Figure 10 Enlarged structural diagram at point C; Figure 12 This is a partial cross-sectional view of the rotating shaft and the first square rod of the present invention; Figure 13 This is a schematic diagram of the internal structure of the linkage box of the present invention.

[0021] Explanation of the labels in the diagram: 1. Dissolving tank; 2. Baffle; 3. Baffle plate; 4. Overflow plate; 5. Cover plate; 6. Feed inlet; 7. Stirring mechanism; 71. Stirring rod; 72. Mounting sleeve; 73. Stirring blade; 8. Stagnation tank; 9. Through port; 10. Arc-shaped jacket; 11. Water inlet pipe; 12. Water outlet pipe; 13. Condensate drain pipe; 14. Drive component; 15. Rotating shaft; 16. First square groove; 17. First square rod; 18. Limiting hole; 19. Limiting assembly; 191. Spring Components; 192. Pull plate; 193. Limiting rod; 20. Support base; 21. Connecting shaft; 22. Second square groove; 23. Second square rod; 24. Fixing hole; 25. Connecting hole; 26. Limiting strip; 27. Sliding groove; 28. Pulling rod; 29. ​​Clearance groove; 30. Linkage box; 31. Rotating rod; 32. Adapter rod; 33. Bottom blade; 34. First bevel gear; 35. Second bevel gear; 36. Sampling port; 37. Quick-opening hand hole; 38. Auxiliary sleeve. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1-13 A multi-stage continuous dissolution apparatus, comprising: The dissolving tank 1 is equipped with multiple partitions 2, multiple baffles 3 and multiple overflow plates 4 inside. The partitions 2, baffles 3 and overflow plates 4 together divide the inner cavity of the dissolving tank 1 into multiple reaction chambers. The bottoms of two adjacent reaction chambers separated by baffle 3 are connected, and the upper parts of two adjacent reaction chambers separated by overflow plate 4 are connected. The dissolved liquid flows through the bottom of baffle 3 and overflows through the upper part of overflow plate 4, and flows continuously through the baffles in succession. The cover plate 5 is detachably installed on the top of the dissolving tank 1, and the cover plate 5 is provided with a feed port 6 that communicates with the reaction chamber of the dissolving tank 1. Multiple stirring mechanisms 7 are installed in each reaction chamber of the dissolving tank 1, and the stirring mechanism 7 is detachably connected to the cover plate 5.

[0024] In use, each stirring mechanism 7 can be installed into each reaction chamber, then the cover plate 5 is placed on top and connected to the stirring mechanism 7. After the cover plate 5 is fixed, the liquid to be dissolved is fed into the first-stage reaction chamber of the dissolving tank 1 through the feed inlet 6. That is, uranium concentrate (such as uranium trioxide) and nitric acid are fed into the first-stage reaction chamber through the feed inlet 6. The liquid reacts and dissolves in the reaction chamber. Afterward, the liquid enters the second-stage reaction chamber through the bottom channel of the baffle plate 3 to continue reacting and dissolving. When the liquid rises above the height of the overflow plate 4, the liquid will overflow through the top of the overflow plate 4 to the third-stage reaction chamber. The liquid in the third-stage reaction chamber then enters the fourth-stage reaction chamber through the bottom channel of the baffle plate 3, and so on. The baffle plate 2, the baffle plate 3, and the overflow plate 4 separate the multiple-stage reaction chambers and limit the flow path. Figure 3-4 (The arrows in the diagram indicate the flow path of the liquid material). The liquid material in dissolving tank 1 flows continuously through the corresponding paths to the subsequent chambers. The dissolving liquid material travels step by step along the path of "passing through the bottom of the baffle plate 3 and overflowing from the top of the overflow plate 4". Finally, the completely dissolved liquid material is discharged from the end. By continuously feeding the liquid material to be dissolved into the first-stage reaction chamber and continuously discharging the dissolved liquid material from the end, this is a continuous dissolution process. This fundamentally realizes the continuous feeding, continuous reaction, and continuous discharge of uranium octoxide and nitric acid, completely eliminating the traditional intermittent dissolution operation mode that requires batch start-up and batch transfer, and eliminating waiting time and auxiliary time between batches. In addition, the stirring mechanism 7 in each reaction chamber operates synchronously to stir and dissolve the liquid material in each reaction chamber, making the dissolution reaction more thorough and the material mixing more uniform.

[0025] The bottom-flow and top-overflow deflection path ensures uniform and seamless flow of the molten material, significantly improving dissolution efficiency. The multi-stage reaction chambers effectively prevent short-circuit flow of the molten material, greatly increasing the residence time of the molten material in the dissolution tank 1. This keeps the concentration, composition, and degree of reaction of the dissolved molten material constant and uniform, ensuring a continuous and stable production process. This significantly improves the production efficiency and product stability of the uranium purification and dissolution process. In addition, it eliminates the need for frequent batch transfers and equipment start-ups and shutdowns, greatly reducing the number of on-site personnel, lowering labor intensity and operating costs, making the production process more controllable and stable, and improving the overall level of the production line.

[0026] This dissolving unit adopts a multi-stage baffle integrated structure, replacing the combination of single or multiple intermittent dissolving tanks in traditional processes with a single integrated unit. Under the same production capacity requirements, the total volume of this equipment is significantly reduced, and the footprint is greatly reduced, directly lowering the initial investment in equipment procurement and processing. It simplifies the layout and number of supporting auxiliary systems such as pipelines, valves, and instruments, reducing engineering workload, while also reducing energy consumption, material consumption, and maintenance costs during subsequent operation, making it more suitable for the intensive construction needs of industrial production lines.

[0027] In addition, the detachable design of the cover plate 5 and the stirring mechanism 7 allows for quick observation, cleaning, replacement of vulnerable parts and maintenance of the equipment, making maintenance and operation simple and efficient, and highly practical.

[0028] For preferred options, please refer to [link / reference]. Figure 1-5 A settling tank 8 is provided at the end of the dissolving tank 1. The inner wall of the dissolving tank 1 has an opening 9 that communicates with the inside of the settling tank 8. The bottom of the settling tank 8 is provided with a discharge pipe. The dissolved liquid in the dissolving tank 1 enters the settling tank 8 after passing through multiple reaction chambers.

[0029] Specifically, after the liquid material completes the dissolution reaction in the multi-stage reaction chambers of the dissolution tank 1, it flows into the settling tank 8 at the end through the port 9 on the inner wall of the end of the dissolution tank 1 to settle and eliminate discharge fluctuations. Finally, the settled and stable liquid material is continuously and stably discharged from the discharge pipe at the bottom of the settling tank 8. The port 9 enables seamless connection between the dissolution tank 1 and the settling tank 8, allowing for uninterrupted continuous dissolution. This enables continuous feeding from the front end, dissolution in each reaction chamber of the dissolution tank 1, and finally, discharge into the settling tank 8 after dissolution.

[0030] Preferably, a slag discharge pipe is installed at the bottom of the dissolving tank 1, a level gauge is installed on the stationary tank 8, and a thermometer is installed in each reaction chamber of the dissolving tank 1.

[0031] Specifically, the level gauge in the static tank 8 monitors the liquid level in real time, and the thermometers in each chamber monitor the dissolution temperature simultaneously, which facilitates precise control of the dissolution process parameters; the insoluble impurities generated during dissolution can be periodically discharged from the slag discharge pipe at the bottom of the dissolution tank 1.

[0032] For preferred options, please refer to [link / reference]. Figure 1-5 An arc-shaped jacket 10 is fitted to the outer wall of the dissolving tank 1. An inlet pipe 11 and an outlet pipe 12 are respectively installed on the side of the arc-shaped jacket 10. A condensate drain pipe 13 is provided at the bottom of the arc-shaped jacket 10. The inlet pipe 11 and the outlet pipe 12 of the arc-shaped jacket 10 are connected to circulating cooling water.

[0033] Specifically, steam (for preheating) or cooling water (for temperature control) is introduced through the water inlet pipe 11 of the arc-shaped jacket 10. At the beginning of the reaction, steam is introduced into the water inlet pipe 11 for preheating to ensure the dissolution temperature. After the dissolution reaction proceeds normally, the valve of the steam inlet pipe is closed, allowing cooling water to enter through the water inlet pipe 11. The dissolution reaction temperature is controlled by adjusting the flow rate of the cooling water, and ultimately the dissolution reaction rate is controlled.

[0034] The condensate formed by the subsequent steam entering the arc-shaped jacket 10 will be discharged from the condensate drain pipe 13. The cooling water in the cooling water circulation process enters through the inlet pipe 11 and exits through the outlet pipe 12. The medium circulates in the jacket to regulate the temperature of the dissolution tank 1. Finally, after the temperature control is completed, the inlet pipe 11 and the outlet pipe 12 are closed to complete the temperature control operation.

[0035] Preferably, the outer wall of the dissolving tank 1 is provided with multiple sampling ports 36 that communicate with each reaction chamber; the cover plate 5 is provided with a quick-opening hand hole 37; and an auxiliary jacket 38 is also provided on one side of the outer wall of the dissolving tank 1, with inlet and outlet water pipes also provided on the auxiliary jacket 38.

[0036] This design allows for sampling and testing of liquid materials from each chamber through the sampling port 36, without requiring machine shutdown and ensuring uninterrupted continuous production. The internal dissolution and stirring status of each reaction chamber in the dissolution tank 1 can be observed through the quick-opening hand hole 37 without removing the cover plate 5, making operation convenient and saving maintenance time.

[0037] For preferred options, please refer to [link / reference]. Figure 2-9 The stirring mechanism 7 includes: The stirring rod 71 has multiple detachable mounting sleeves 72, and the outer wall of the mounting sleeves 72 is provided with multiple stirring blades 73.

[0038] Specifically, the mounting sleeve 72 is fitted onto the outer wall of the stirring rod 71. When the stirring rod 71 is rotated by the drive mechanism, the mounting sleeve 72 and the stirring blade 73 on the outer wall rotate synchronously, so as to stir and mix the liquid in each reaction chamber. When replacement or maintenance is required, the installation sleeve 72 can be disassembled to remove the mixing blade 73 separately for replacement, cleaning, and maintenance. There is no need to replace the entire mixing mechanism 7; only a single damaged part needs to be replaced, saving equipment operation and maintenance costs.

[0039] For preferred options, please refer to [link / reference]. Figure 3-4 Multiple drive components 14 are installed on the upper end of the cover plate 5. The drive components 14 in this application can be servo motors. The lower end of the cover plate 5 is rotatably connected to a rotating shaft 15 connected to the output end of the drive components 14. The rotating shaft 15 is detachably connected to the stirring rod 71.

[0040] Specifically, the drive unit 14 on the start cover 5 is activated, which drives the rotating shaft 15 to rotate at high speed; then the rotating shaft 15 transmits power to the detachably connected stirring rod 71, which drives the entire stirring mechanism 7 to operate and stir. When the machine is stopped and the rear cover plate 5 is removed, the connection between the rotating shaft 15 and the stirring rod 71 can be disconnected, and the cover plate 5 can be removed and the stirring rod 71 can be disassembled separately for maintenance. The operation is simple and convenient.

[0041] In this embodiment, preferably, please refer to [reference needed]. Figure 2-7 and Figure 10-12 The lower end of the rotating shaft 15 is provided with a first square groove 16, and the upper end of the stirring rod 71 is slidably inserted with a first square rod 17 that is adapted to the first square groove 16. A limiting hole 18 is provided on the first square rod 17, and a limiting component 19 for fixing the first square rod 17 is provided on the rotating shaft 15.

[0042] With this design, when installing the cover plate 5, after placing the cover plate 5 above the dissolving tank 1, the first square rod 17 is moved upward along the stirring rod 71, so that the first square rod 17 extends upward and is inserted into the first square groove 16 of the rotating shaft 15. Then, the limiting component 19 on the rotating shaft 15 is engaged with the limiting hole 18 of the first square rod 17, thus completing the firm fixation between the rotating shaft 15 and the stirring rod 71. Subsequently, when the rotating shaft 15 rotates, it will drive the stirring rod 71 to rotate. Finally, during disassembly, release the locking component 19 and pull out the first square rod 17 to separate the two, achieving quick fixation and a firm connection. No special tools are required, making the operation efficient and suitable for rapid equipment maintenance and replacement needs.

[0043] For preferred options, please refer to [link / reference]. Figure 10-12 The limiting component 19 includes an elastic element 191 disposed on the outer wall of the rotating shaft 15. In this application, the elastic element 191 can be a spring. The other end of the elastic element 191 is provided with a pull plate 192. The pull plate 192 is provided with a limiting rod 193. One end of the limiting rod 193 slides into the first square groove 16, and the end of the limiting rod 193 is set as an inclined surface.

[0044] Specifically, when the first square rod 17 is inserted into the first square groove 16 of the rotating shaft 15, the first square rod 17 pushes up the inclined surface of the limiting rod 193 to make it move, and causes the elastic element 191 to stretch and deform; then when the first square rod 17 is inserted into place, the elastic element 191 is no longer compressed and rebounds, which drives the limiting rod 193 to automatically snap into the limiting hole 18 to complete the fixation, realizing automatic snap-fit, without the need for manual alignment, making the installation more convenient; When finally disassembling, pull the pull plate 192 to move the limit rod 193 away from the limit hole 18, thereby releasing the fixation restriction on the first square rod 17.

[0045] Preferably, the outer wall of the first square rod 17 is provided with a pull rod 28, and the outer wall of the rotating shaft 15 is provided with a relief groove 29 that is adapted to the pull rod 28.

[0046] When it is necessary to pull out the first square rod 17, it can be pulled out with the assistance of the pulling rod 28, which makes the operation more convenient, saves effort, and improves maintenance efficiency. After the first square rod 17 is inserted into the limiting hole 18, the pulling rod 28 is placed in the clearance groove 29 to avoid interference.

[0047] For preferred options, please refer to [link / reference]. Figure 4-9 Each reaction chamber of the dissolving tank 1 is provided with a support base 20. A connecting shaft 21 is rotatably connected to the support base 20 via a bearing. A second square groove 22 is provided on the top of the connecting shaft 21. A second square rod 23 that is adapted to the second square groove 22 is provided at the bottom of the stirring rod 71.

[0048] With this design, when installing the stirring mechanism 7, the second square rod 23 at the bottom of the stirring rod 71 is first inserted into the second square groove 22 of the connecting shaft 21, which can support and limit the bottom of the stirring rod 71. Then, when the stirring rod 71 rotates, the connecting shaft 21 rotates synchronously on the support seat 20 through the bearing, providing support for the bottom of the stirring rod 71, preventing the stirring rod 71 from shaking or wobbling, and making the stirring more stable. Finally, when disassembling, pull the stirring rod 71 upwards to disengage the second square rod 23 from the second square groove 22.

[0049] In this embodiment, preferably, please refer to [reference needed]. Figure 6-9 The outer wall of the stirring rod 71 has multiple fixing holes 24 along the vertical direction, and the mounting sleeve 72 has a through connecting hole 25 that matches the fixing holes 24.

[0050] This is the design. When installing the installation sleeve 72, it can be placed on the stirring rod 71 and adjusted to the target height. Then, fasteners (such as bolts) are passed through the connecting hole 25 and the corresponding fixing hole 24 to fix the installation sleeve 72. This facilitates installation and disassembly, saves time and effort, and allows for individual replacement in case of malfunction.

[0051] Furthermore, the height of the stirring blade 73 is freely adjustable to suit the stirring needs of different liquid levels and materials, making it highly versatile. The stirring height can be adjusted according to the dissolution process to specifically enhance the stirring effect and improve the dissolution efficiency.

[0052] In this embodiment, preferably, please refer to [reference needed]. Figure 6-9 The outer wall of the stirring rod 71 is also provided with a limiting strip 26, and the inner wall of the mounting sleeve 72 is provided with a sliding groove 27 that is adapted to slide with the limiting strip 26.

[0053] With this design, during installation, the slide groove 27 is aligned with the limiting strip 26, and the installation sleeve 72 is fitted into the stirring rod 71, which can play a positioning role. There is no need to adjust the circumferential position afterward. This better aligns the connecting hole 25 with the corresponding fixing hole 24. Then, the height of the installation sleeve 72 is adjusted and fixed. During stirring, the limiting strip 26 cooperates with the slide groove 27 to further prevent the installation sleeve 72 from rotating circumferentially and slipping.

[0054] In this embodiment, preferably, please refer to [reference needed]. Figure 1 and Figure 5-8 Each reaction chamber of the dissolving tank 1 is equipped with a linkage box 30. A rotating rod 31 and a connecting rod 32 are rotatably connected to the linkage box 30. A bottom paddle 33 is provided on the rotating rod 31. One end of the connecting rod 32 is connected to the connecting shaft 21. A first bevel gear 34 is provided on the other end of the connecting rod 32. A second bevel gear 35 that meshes with the first bevel gear 34 is provided on the outer wall of the rotating rod 31 inside the linkage box 30.

[0055] With this design, when the stirring rod 71 rotates, it drives the connecting shaft 21 and the adapter rod 32 to rotate synchronously, and the first bevel gear 34 on the adapter rod 32 rotates accordingly; then the first bevel gear 34 meshes and drives the second bevel gear 35 to rotate, which in turn drives the rotating rod 31 and the bottom blade 33 to rotate; finally, the bottom blade 33 strongly stirs the liquid at the bottom of the chamber to prevent solid powder from settling. Through cooperation with the upper and middle layer stirring mechanism 7, the dissolution is more thorough, the stirring dead zone is reduced, and the liquid is mixed more evenly.

[0056] Furthermore, the bottom blade 33 rotates through linkage with the stirring mechanism 7, eliminating the need for additional drive components, thus saving energy, reducing consumption, and simplifying the equipment structure.

[0057] It should be understood that the examples and embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Those skilled in the art can make various modifications or changes based on them. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the protection scope of the invention.

[0058] It should be noted that if the embodiments of the present invention involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0059] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

Claims

1. A multi-stage continuous dissolving device, characterized in that, include: The dissolving tank (1) is provided with multiple partitions (2), multiple baffles (3) and multiple overflow plates (4) inside. The partitions (2), the baffles (3) and the overflow plates (4) together divide the inner cavity of the dissolving tank (1) into multiple reaction chambers. The bottoms of two adjacent reaction chambers separated by the baffle (3) are connected, and the upper parts of two adjacent reaction chambers separated by the overflow plate (4) are connected. The dissolved liquid flows through the bottom of the baffle (3) and overflows through the upper part of the overflow plate (4), and flows continuously through the baffle in sequence. The cover plate (5) is detachably installed on the top of the dissolving tank (1), and the cover plate (5) is provided with a feed port (6) that communicates with the reaction chamber of the dissolving tank (1). Multiple stirring mechanisms (7) are installed in each reaction chamber of the dissolving tank (1), and the stirring mechanism (7) is detachably connected to the cover plate (5).

2. The multi-stage continuous dissolving device according to claim 1, characterized in that, The dissolving tank (1) is provided with a stationary tank (8) at the end. The inner wall of the dissolving tank (1) is provided with an opening (9) that communicates with the interior of the stationary tank (8). The bottom of the stationary tank (8) is provided with a discharge pipe. The dissolving liquid in the dissolving tank (1) enters the stationary tank (8) after passing through multiple reaction chambers.

3. The multi-stage continuous dissolving apparatus according to claim 1, characterized in that, The outer wall of the dissolving tank (1) is fitted with an arc-shaped jacket (10), and the sides of the arc-shaped jacket (10) are respectively fitted with an inlet pipe (11) and an outlet pipe (12). The bottom of the arc-shaped jacket (10) is provided with a condensate drain pipe (13).

4. The multi-stage continuous dissolving apparatus according to claim 1, characterized in that, The stirring mechanism (7) includes: A stirring rod (71) is detachably provided with multiple mounting sleeves (72), and multiple stirring blades (73) are provided on the outer wall of the mounting sleeves (72).

5. The multi-stage continuous dissolution apparatus according to claim 4, characterized in that, The cover plate (5) is equipped with multiple drive components (14) at its upper end, and the cover plate (5) is rotatably connected to a rotating shaft (15) connected to the output end of the drive component (14) at its lower end. The rotating shaft (15) is detachably connected to the stirring rod (71).

6. The multi-stage continuous dissolution apparatus according to claim 5, characterized in that, The lower end of the rotating shaft (15) is provided with a first square groove (16), and the upper end of the stirring rod (71) is slidably inserted with a first square rod (17) that is adapted to the first square groove (16). A limiting hole (18) is provided on the first square rod (17), and a limiting component (19) for fixing the first square rod (17) is provided on the rotating shaft (15).

7. A multi-stage continuous dissolving apparatus according to claim 6, characterized in that, The limiting component (19) includes an elastic element (191) disposed on the outer wall of the rotating shaft (15). The other end of the elastic element (191) is provided with a pull plate (192). The pull plate (192) is provided with a limiting rod (193). One end of the limiting rod (193) slides into the first square groove (16), and the end of the limiting rod (193) is set as an inclined surface.

8. The multi-stage continuous dissolution apparatus according to claim 4, characterized in that, Each of the reaction chambers of the dissolving tank (1) is provided with a support base (20), and a connecting shaft (21) is rotatably connected to the support base (20) via a bearing. A second square groove (22) is provided at the top of the connecting shaft (21), and a second square rod (23) adapted to the second square groove (22) is provided at the bottom of the stirring rod (71).

9. A multi-stage continuous dissolving apparatus according to claim 4, characterized in that, The outer wall of the stirring rod (71) is provided with a plurality of fixing holes (24) along the vertical direction, and the mounting sleeve (72) is provided with a through connecting hole (25) that is adapted to the fixing holes (24).

10. A multi-stage continuous dissolving apparatus according to claim 9, characterized in that, The outer wall of the stirring rod (71) is also provided with a limiting strip (26), and the inner wall of the mounting sleeve (72) is provided with a sliding groove (27) that is adapted to slide with the limiting strip (26).

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