Rare earth electrolysis oxide concentration control system

Abstract

The invention discloses a rare earth electrolysis oxide concentration control system which comprises the following steps: S1, preparation work: injecting rare earth oxide into electrolyte by a feeding pipe, and starting electrolysis work by an electrode plate; s2, stirring operation, wherein along with electrolysis operation, a driving assembly drives a coaxial assembly and a balance assembly to synchronously rotate to complete multiple stirring operation on electrolyte in the electrolytic bath; s3, dynamic balancing: the ion concentration in the electrolyte is gradually reduced to drive the driving assembly and the balancing assembly to synchronously descend, the balancing assembly synchronously adjusts the distance between the electrode plates to balance the electrolysis efficiency, and meanwhile, the oxide concentration in the electrolyte is increased; and S4, cleaning work: scraping and cleaning metal attached to the surface of the cathode by a balancing assembly while stirring work is carried out, so that the effective contact area of the electrode plate in the electrolyte is maintained to balance the electrolysis efficiency.

Description

Technical Field

[0001] This invention relates to the field of rare earth molten salt electrolysis technology, specifically to a rare earth electrolytic oxide concentration control system. Background Technology

[0002] Rare earth oxide concentration control refers to the precise control of the concentration of rare earth oxides in the electrolyte during the electrolysis of rare earth metals to ensure the stability of the electrolysis process, product quality, and energy efficiency.

[0003] A search revealed a patent with publication number CN117822056B, which includes a hydrolysis mechanism. A feeding mechanism is fixedly installed on the right side of the hydrolysis mechanism, and a waste gas filtration mechanism is fixedly connected to the upper surface of the hydrolysis mechanism. A mounting plate is fixedly connected to the right side of the hydrolysis mechanism, and an electric telescopic rod is fixedly connected to the upper surface of the mounting plate. A metal collection mechanism is fixedly connected to the top of the output end of the electric telescopic rod. A siphon tube is fixedly connected inside the metal collection mechanism, and a vacuum pump is fixedly connected to the outer wall of the siphon tube.

[0004] In the aforementioned patent, the hydrolysis mechanism is used to complete the electrolysis of rare earth oxides, the feeding mechanism is used to add electrolytes, the exhaust gas filtration mechanism is used to filter the exhaust gas generated during electrolysis, and the suction pump and siphon pipe work together to draw the molten electrolyte into the metal collection mechanism, and the suction position can be freely adjusted. The metal collection mechanism further completes the screening of rare earth metals and molten electrolytes.

[0005] However, the aforementioned patent does not consider the problem that most rare earth metals deposit and adhere to the surface of the electrode assembly after electrolysis. It simply uses a siphon to draw water from the inside of the hydrolysis tank. The material drawn in is mostly unreacted electrolyte, making it difficult to achieve the expected metal collection effect. At the same time, as metals continue to adhere, the effective contact area of ​​the electrode assembly decreases, resulting in a decrease in electrolysis efficiency. Meanwhile, the working efficiency of the suction machine remains constant, meaning that the mass of electrolyte injected into the hydrolysis tank per unit time is constant. This causes the concentration of rare earth oxides in the electrolyte to gradually increase. Excessive oxide concentration will lead to excessive current density, causing local overheating and excessive energy consumption. In addition, excessively high conductivity may lead to side reactions, resulting in a decrease in metal yield. Summary of the Invention

[0006] The purpose of this invention is to provide a rare earth electrolytic oxide concentration control system, which has the advantages of constant efficiency and synchronous control, and solves the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a rare earth electrolytic oxide concentration control system, comprising the following steps: S1. Preparation: By adjusting the voltage of the system circuit to control the drive component and the balancing component, the electrode plate located at the bottom of the balancing component is completely immersed in the electrolyte inside the electrolytic cell. At this time, the conductivity sensor begins to monitor the conductivity of the electrolyte in the electrolytic cell and record the data. Rare earth oxides are then injected into the electrolyte through the feed pipe, and the electrode plate begins the electrolysis operation. S2. Stirring operation: As the electrolysis operation proceeds, the drive component works synchronously and the output rotation direction is cyclical and intermittently reversed. The drive component further drives the coaxial component and the balancing component to rotate synchronously and the rotation directions of the coaxial component and the balancing component are opposite, thereby completing the multiple stirring operations of the electrolyte in the electrolytic cell. S3. Dynamic Balance: As the electrolysis operation proceeds, the ion concentration in the electrolyte in the electrolytic cell gradually decreases. At this time, the current in the system circuit decreases and drives the drive component and the balance component to decrease synchronously. The balance component synchronously adjusts the spacing between the electrode plates to increase the electric field strength between the electrode plates and thus balance the electrolysis efficiency. At the same time, the balance component synchronously increases the rate at which rare earth oxides are injected into the electrolytic cell through the feed pipe to increase the oxide concentration in the electrolyte, thereby achieving a dynamic balance of oxide concentration. S4. Cleaning operation: While the stirring operation is in progress, the balancing component performs a reciprocating lifting operation at the cathode of the electrode plate. By reciprocating scraping the surface of the cathode of the electrode plate by the balancing component, the metal attached to the cathode surface is scraped and cleaned, thereby maintaining the effective contact area of ​​the electrode plate in the electrolyte to balance the electrolysis efficiency.

[0008] Preferably, the electrolytic cell includes a drive assembly, a coaxial assembly, a balancing assembly, and a system circuit. Fixing frames are fixedly connected to both sides of the upper surface of the electrolytic cell. The opposite faces at the top of the fixing frames are jointly fixedly connected to the same electromagnetic plate. A positioning frame is fixedly connected to the side of the middle section of one of the fixing frames pointing towards the electromagnetic plate. An electromagnetic coil, whose magnetic strength is controlled by the system circuit, is installed inside the electromagnetic plate. A conductivity sensor for monitoring the conductivity of the electrolyte inside the electrolytic cell is fixedly connected to the inner wall of the electrolytic cell.

[0009] Preferably, the driving assembly includes a half gear driven by a motor that is rotatably connected and limited inside the positioning frame. The end of the half gear away from the positioning frame is intermittently engaged and connected to an external gear ring column. A lifting roller is fixedly connected to the inner contour of the external gear ring column. An internal gear ring column is fixedly connected to the inner contour of the lifting roller. A positioning ring is rotatably connected and limited through the top end of the lifting roller. A tension spring is fixedly connected to the top end of the positioning ring, and the other end of the tension spring is fixedly connected to the lower surface of the electromagnetic plate.

[0010] Preferably, the coaxial assembly includes a feed pipe that is rotatably connected to the center of the electromagnetic plate to complete the feeding of rare earth oxides. Multiple rotating wheels are rotatably connected to the outer contour of the feed pipe near the middle section. Rotating wheels are rotatably connected to the outer contour of the bottom end of the feed pipe. Transmission wheels are meshed and connected to the outer contours of both sides of the rotating wheels, and the transmission wheels are also meshed and connected to the internal gear ring column. A positioning pin is rotatably connected to the shaft of the transmission wheel. A fixed sleeve roller is sleeved on the outer contour of the feed pipe and is fixedly connected to the lower surface of the electromagnetic plate. The fixed sleeve roller is rotatably connected to the transmission wheel through the positioning pin.

[0011] Preferably, the balancing assembly includes a positioning plate fixedly connected to the lower surface of the lifting roller for rotating stirring, and the positioning plate is rotatably connected by a feed pipe. A fixing rod extending to both sides is fixedly connected to the outer contour of the bottom end of the positioning plate. A telescopic rod is sleeved on the outer contour of the fixing rod away from the positioning plate. A positioning spring is fixedly connected to the opposite surface of the telescopic rod and the fixing rod, and the positioning spring is located inside the telescopic rod.

[0012] Preferably, the end of the telescopic rod away from the fixed rod is connected to a drive shaft through and rotatably limited. The bottom end of the drive shaft is fixedly connected to a stirring rod, which is off-axis. An electrode plate is connected through and fixedly connected to the outer contour of the drive shaft near the stirring rod.

[0013] Preferably, a telescopic rod, a positioning spring, and a fixing rod are also connected through and rotatably limited on the outer contour of the middle section of the drive shaft. A bevel gear is connected through and fixedly connected to the outer contour of the drive shaft between the upper and lower fixing rods. The bevel gears are meshed and connected to both sides of the rotating wheel. A blocking plate is fixedly connected to the opposite surface of the fixing rod located in the middle section of the drive shaft and abuts against the lower surface of the feed pipe. One end of the fixing rod located in the middle section of the drive shaft away from the blocking plate is connected through and meshed with a helical gear column. The helical gear column and the bevel gear at the corresponding position are connected by a spline drive. A positioning sleeve is fixedly connected to the bottom end of the helical gear column and the positioning sleeve is sleeved on the outer contour of the electrode plate at the corresponding position.

[0014] Preferably, it also includes a system circuit, which is a series circuit and passes through and is electrically connected to the half gear, the positioning frame, the electrode plate and the conductivity sensor in sequence. The lifting roller is a permanent magnet and the lifting roller is attracted by the magnetic force of the electromagnetic plate. The system circuit uses a constant voltage, and the distance between the electrode plates and the ion concentration of the electrolyte in the electrolytic cell jointly control the resistance value in the system circuit.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention sets up a monitoring system to monitor the conductivity of the electrolyte in real time during the electrolysis process, and then calculates the concentration of rare earth oxides, thereby dynamically controlling the addition rate of rare earth raw materials while completing the addition.

[0016] This invention achieves the stirring of the electrolyte by setting a coaxial component to drive the balancing component. The stirring method is a cyclical intermittent reverse operation, which further breaks the turbulence mode in the electrolyte and avoids the flow dead zone or uneven flow mode that may be formed by unidirectional flow of the electrolyte, thereby ensuring uniform ion distribution in the electrolyte and improving electrolysis efficiency.

[0017] This invention uses a balancing component to dynamically control the spacing between the anode and cathode plates based on changes in the conductivity of the electrolyte. This ensures that the electrolysis efficiency remains constant, improving its stability. Simultaneously, it drives the anode and cathode plates to rotate, ensuring that the plates are consumed evenly. This avoids the decrease in electrolysis efficiency caused by changes in the shape of the plates due to excessive consumption on one side. Furthermore, it cleans the surface of the cathode plate to remove deposited rare earth metals, thereby improving the electrolysis efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a cross-sectional view of the main structure of the present invention; Figure 3 This is a schematic diagram showing the positional relationship of the driving components of the present invention; Figure 4 This is an exploded view of the drive component structure of the present invention; Figure 5 This is an exploded view of the coaxial assembly structure of the present invention; Figure 6 This is a schematic diagram showing the positional relationship of the balancing components of the present invention; Figure 7 This is a partial cross-sectional schematic diagram of the balancing component of the present invention; Figure 8 This is an exploded view of the balancing component structure of the present invention; Figure 9 This is a flowchart illustrating the overall workflow of the present invention.

[0019] In the diagram: 1. Electrolytic cell; 11. Fixing frame; 12. Electromagnetic plate; 13. Positioning frame; 14. Conductivity sensor; 2. Half gear; 21. External gear ring column; 22. Lifting sleeve roller; 23. Internal gear ring column; 24. Positioning ring; 25. Tension spring; 3. Feed pipe; 31. Rotating wheel one; 32. Rotating wheel two; 33. Transmission wheel; 34. Positioning pin; 35. Fixing sleeve roller; 4. Positioning plate; 41. Fixing rod; 42. Telescopic rod; 43. Positioning spring; 44. Transmission shaft; 45. Stirring rod; 46. Bevel gear; 47. Electrode plate; 48. Blocking plate; 5. Helical gear column; 51. Positioning sleeve. Detailed Implementation

[0020] 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention. Example 1:

[0021] Please see Figures 1 to 9 This invention provides a technical solution: a rare earth electrolytic oxide concentration control system, comprising the following steps: S1. Preparation: By adjusting the voltage of the system circuit to control the drive component and the balancing component, the electrode plate 47 located at the bottom of the balancing component is completely immersed in the electrolyte inside the electrolytic cell 1. At this time, the conductivity sensor 14 begins to monitor the conductivity of the electrolyte in the electrolytic cell 1 and record the data. Rare earth oxides are then injected into the electrolyte through the feed pipe 3, and the electrode plate 47 begins to perform electrolysis. S2. Stirring operation: As the electrolysis operation proceeds, the drive component works synchronously and the output rotation direction is cyclical and intermittently reversed. The drive component further drives the coaxial component and the balancing component to rotate synchronously and the rotation directions of the coaxial component and the balancing component are opposite, thereby completing the multiple stirring operations of the electrolyte in the electrolytic cell 1. S3. Dynamic Balance: As the electrolysis operation proceeds, the ion concentration in the electrolyte in the electrolytic cell 1 gradually decreases. At this time, the current in the system circuit decreases and drives the drive component and the balance component to decrease synchronously. The balance component synchronously adjusts the spacing of the electrode plates 47 to increase the electric field strength between the electrode plates 47 and thus balance the electrolysis efficiency. At the same time, the balance component synchronously increases the rate at which the feed pipe 3 injects rare earth oxides into the electrolytic cell 1 to increase the oxide concentration in the electrolyte, thereby achieving a dynamic balance of oxide concentration. S4. Cleaning operation: While the stirring operation is in progress, the balancing component performs a reciprocating lifting operation at the cathode of the electrode plate 47. By reciprocating scraping the surface of the cathode of the electrode plate 47 by the balancing component, the metal attached to the cathode surface is scraped and cleaned, thereby maintaining the effective contact area of ​​the electrode plate 47 in the electrolyte to balance the electrolysis efficiency.

[0022] In this system, the electrode plate 47 completes the ionization of the electrolyte inside the electrolytic cell 1, the conductivity sensor 14 completes the real-time monitoring and recording of the conductivity of the electrolyte inside the electrolytic cell 1, the electromagnetic plate 12 is electrically connected to the system circuit and controls the drive component and the balance component to achieve dynamic adjustment, and the fixed frame 11 and the positioning frame 13 serve as support structures to limit the overall position of the device. The drive assembly completes the motion transmission of the coaxial assembly and the balancing assembly, and controls the height of the balancing assembly to adapt to the changes in the ion concentration of the electrolyte in the electrolytic cell 1. The coaxial assembly rotates in the opposite direction along with the drive assembly, further driving the electrode plate 47 to rotate, thereby eliminating the effect of uneven consumption of the electrode plate 47 during electrolysis, which leads to a decrease in electrolysis efficiency. At the same time, it works with the balancing assembly to complete the scraping and cleaning of the metal adhering to the cathode surface of the electrode plate 47, thus effectively ensuring the electrolysis efficiency. While completing the stirring operation of the electrolyte in the electrolytic cell 1, the balancing assembly dynamically adjusts the spacing of the electrode plates 47 according to the ion concentration of the electrolyte in the electrolytic cell 1, and adjusts the electric field strength between the electrode plates 47 by controlling the electrode spacing to dynamically balance the electrolysis efficiency. Example 2:

[0023] Please see Figures 1-4 This embodiment further illustrates the concept based on Embodiment 1: The system includes a drive assembly, a coaxial assembly, a balancing assembly, and a system circuit. Fixing frames 11 are fixedly connected to both sides of the upper surface of the electrolytic cell 1. The top surfaces of the fixing frames 11 are fixedly connected to the same electromagnetic plate 12. A positioning frame 13 is fixedly connected to the side of the outer contour of the middle section of one of the fixing frames 11 that points towards the electromagnetic plate 12. An electromagnetic coil with magnetic force controlled by the system circuit is installed inside the electromagnetic plate 12. A conductivity sensor 14 for monitoring the conductivity of the electrolyte inside the electrolytic cell 1 is fixedly connected to the inner wall of the electrolytic cell 1.

[0024] The drive assembly includes a half gear 2 driven by a motor, which is rotatably connected and limited inside the positioning frame 13. The end of the half gear 2 away from the positioning frame 13 is intermittently engaged and connected to an external gear ring column 21. A lifting sleeve roller 22 is fixedly connected to the inner contour of the external gear ring column 21. An internal gear ring column 23 is fixedly connected to the inner contour of the lifting sleeve roller 22. A positioning ring 24 is rotatably connected and limited through the top end of the lifting sleeve roller 22. A tension spring 25 is fixedly connected to the top end of the positioning ring 24, and the other end of the tension spring 25 is fixedly connected to the lower surface of the electromagnetic plate 12.

[0025] It also includes a system circuit, which is a series circuit and passes through and is electrically connected to the half gear 2, the positioning frame 13, the electrode plate 47 and the conductivity sensor 14 in sequence. The lifting roller 22 is a permanent magnet and the lifting roller 22 is attracted by the magnetic force of the electromagnetic plate 12. The system circuit uses a constant voltage, and the distance between the electrode plates 47 and the ion concentration of the electrolyte in the electrolytic cell 1 jointly control the resistance value in the system circuit.

[0026] When the electrode plate 47 is immersed in the electrolyte in the electrolytic cell 1, the system circuit is turned on. At this time, the half gear 2, the positioning frame 13, the electrode plate 47, the conductivity sensor 14, and the electrolyte in the electrolytic cell 1 together form a closed loop. The half gear 2 starts to rotate under the drive of the motor. Since the half gear 2 and the external gear ring column 21 mesh intermittently, when the half gear 2 rotates to the upper part, the half gear 2 drives the external gear ring column 21 to rotate clockwise. Then, when the half gear 2 rotates to the lower part, the half gear 2 drives the external gear ring column 21 to rotate counterclockwise. That is, the external gear ring column 21 realizes the cyclic intermittent reverse rotation operation.

[0027] Since the outer gear ring column 21, the lifting sleeve roller 22 and the inner gear ring column 23 are all fixedly connected, that is, the lifting sleeve roller 22 and the inner gear ring column 23 rotate synchronously with the outer gear ring column 21, the positioning ring 24 rotates relative to the lifting sleeve roller 22 under the fixing action of the tension spring 25 and the electromagnetic plate 12, that is, the positioning ring 24 does not rotate.

[0028] It should be noted that since the half gear 2, positioning frame 13 and conductivity sensor 14 in the system circuit all have fixed resistance values, the change in resistance in the system circuit is the change in ion concentration in the electrolyte in the electrolytic cell 1. The ion concentration in the electrolyte is further affected by the concentration of rare earth oxides. That is, the higher the concentration of rare earth oxides, the higher the ion concentration in the electrolyte, and the lower the resistance in the system circuit.

[0029] Furthermore, as electrolysis proceeds, the ion concentration of the electrolyte in electrolytic cell 1 gradually decreases. At this time, the resistance in the system circuit increases synchronously. Since the voltage of the system circuit is constant, the increase in resistance will cause the current flowing through the electromagnetic plate 12 to decrease, which in turn will weaken the magnetic force of the electromagnetic plate 12. At this time, the force balance of the lifting roller 22 is broken. The lifting roller 22 moves downward under the action of gravity and stretches the tension spring 25 synchronously. As the lifting roller 22 moves downward, the tension spring 25 is stretched and the elastic force gradually increases until the elastic force of the tension spring 25, the magnetic attraction of the electromagnetic plate 12 on the lifting roller 22, and the gravity of the lifting roller 22 reach a new balance. Then the lifting roller 22 stops moving, thereby realizing the function of dynamic control based on the change of ion concentration of the electrolyte in electrolytic cell 1. Example 3:

[0030] Please see Figures 5-6 This embodiment further illustrates the concept based on Embodiment 2: The coaxial assembly includes a feed pipe 3 that is rotatably connected to the center of the electromagnetic plate 12 to complete the feeding of rare earth oxides. Multiple rotating wheels 31 are rotatably connected to the outer contour of the feed pipe 3 near the middle section. Rotating wheels 32 are rotatably connected to the outer contour of the bottom end of the feed pipe 3. Transmission wheels 33 are meshed and connected to the outer contours of both sides of the rotating wheels 31. The transmission wheels 33 are also meshed and connected to the internal gear ring column 23. A positioning pin 34 is rotatably connected to the axis of the transmission wheel 33. A fixed sleeve roller 35 is sleeved on the outer contour of the feed pipe 3 and is fixedly connected to the lower surface of the electromagnetic plate 12. The fixed sleeve roller 35 is rotatably connected to the transmission wheel 33 through the positioning pin 34.

[0031] When the lifting roller 22 and the internal gear ring column 23 rotate synchronously and intermittently in opposite directions along with the external gear ring column 21, the transmission wheel 33 meshes with the internal gear ring column 23, and the positioning pin 34 is fixed under the restriction of the fixed roller 35. The transmission wheel 33 also meshes with the first rotating wheel 31. At this time, the feed pipe 3, the first rotating wheel 31 and the second rotating wheel 32 rotate coaxially with the lifting roller 22 and the motion is transmitted through the transmission wheel 33. The rotation direction between the feed pipe 3, the first rotating wheel 31 and the second rotating wheel 32 and the lifting roller 22 is always in the opposite direction. Thus, in the movement of the balancing component, the electrode plate 47 is rotated coaxially to complete the stirring of the electrolyte in the electrolytic cell 1, thereby reducing the concentration difference in the electrolyte caused by the electrolytic reaction. The more uniform the ion concentration in the electrolyte, the more uniform the conductivity will be, thereby improving the overall electrolysis efficiency. Example 4:

[0032] Please see Figures 6-8This embodiment further illustrates the concept based on Embodiment 3: The balancing assembly includes a positioning plate 4 fixedly connected to the lower surface of the lifting roller 22 for rotating stirring. The positioning plate 4 is penetrated and rotatably connected by the feed pipe 3. A fixing rod 41 extending to both sides is fixedly connected to the outer contour of the bottom end of the positioning plate 4. A telescopic rod 42 is sleeved on the outer contour of the fixing rod 41 away from the positioning plate 4. A positioning spring 43 is fixedly connected to the opposite surface of the telescopic rod 42 and the fixing rod 41, and the positioning spring 43 is located inside the telescopic rod 42.

[0033] The end of the telescopic rod 42 away from the fixed rod 41 is connected to a drive shaft 44 for rotational limitation. The bottom end of the drive shaft 44 is fixedly connected to a stirring rod 45, which is off-axis. An electrode plate 47 is connected to the outer contour of the drive shaft 44 near the stirring rod 45.

[0034] The outer contour of the middle section of the drive shaft 44 is also connected by a telescopic rod 42, a positioning spring 43, and a fixing rod 41. The outer contour of the drive shaft 44 between the upper and lower fixing rods 41 is connected by a bevel gear 46, which meshes and drives the two sides of the rotating wheel 32. The fixing rod 41 in the middle section of the drive shaft 44 is fixedly connected to a blocking plate 48 on the opposite surface, and the blocking plate 48 abuts against the lower surface of the feed pipe 3. One end of the fixing rod 41 in the middle section of the drive shaft 44 away from the blocking plate 48 is connected by a helical gear column 5, which meshes and drives the bevel gear 46 in the corresponding position through a spline drive. The bottom end of the helical gear column 5 is fixedly connected to a positioning sleeve 51, which is sleeved on the outer contour of the electrode plate 47 in the corresponding position.

[0035] As can be seen from Example 3, during the electrolysis operation, the lifting roller 22, the feed pipe 3, the first rotating wheel 31, and the second rotating wheel 32 rotate in opposite directions on the same axis. At this time, the half gear 2 further drives the positioning plate 4, the fixed rod 41, the telescopic rod 42, and the transmission shaft 44 to rotate synchronously. The transmission shaft 44 further drives the stirring rod 45 and the bevel gear 46 to rotate synchronously around the axis of the positioning plate 4. At this time, the stirring rod 45 and the electrode plate 47 jointly complete the stirring operation of the electrolyte in the electrolytic cell 1.

[0036] Simultaneously, the rotating wheel 32, along with the feed pipe 3, drives the bevel gear 46 to rotate synchronously. The bevel gear 46 further drives the transmission shaft 44, the stirring rod 45, and the electrode plate 47 to start rotating. That is, the stirring rod 45 and the electrode plate 47 rotate synchronously while rotating coaxially around the positioning plate 4. Due to the off-axis setting of the stirring rod 45, the stirring rod 45 can fully agitate the electrolyte inside the electrolytic cell 1 during rotation, causing it to start flowing, thereby effectively increasing the stirring effect and homogenizing the ion concentration of the electrolyte in the electrolytic cell 1.

[0037] It should be noted that since the electrolysis operation mainly occurs on the opposite surface of the two electrode plates 47 and causes wear on the electrode plates 47, after a long period of electrolysis, the relatively stationary electrode plates 47 will experience uneven wear on their opposite surface, which will lead to changes in the electrode spacing of the electrode plates 47 and a decrease in electrolysis efficiency. However, since the electrode plates 47 rotate synchronously with the drive shaft 44, the opposite surface of the two electrode plates 47 is always in a changing state. At this time, the wear caused by the electrolysis operation on the electrode plates 47 is uniform, thereby reducing the impact of the wear on the electrode plates 47 on the electrolysis efficiency.

[0038] Furthermore, the bevel gear 46 synchronously drives the helical gear column 5 to rotate. At this time, the helical gear column 5 and the corresponding fixed rod 41 rotate relative to each other, causing the helical gear column 5 to begin to descend along the spline inside the bevel gear 46. This causes the positioning sleeve 51, which is sleeved on the outer surface of the cathode of the electrode plate 47, to descend synchronously. The descent of the positioning sleeve 51 on the cathode surface of the electrode plate 47 achieves the scraping and cleaning operation of the metal attached to the outer surface of the cathode of the electrode plate 47. Moreover, due to the rotation of the bevel gear 46, the feed pipe 3 rotates intermittently in reverse, that is, the helical gear column 5 and the positioning sleeve 51 reciprocate up and down, thereby completing the cyclic cleaning of the outer surface of the cathode of the electrode plate 47. This effectively ensures the contact area of ​​the electrode plate 47 in the electrolyte in the electrolytic cell 1 to ensure its electrolysis efficiency.

[0039] On the other hand, when the ion concentration of the electrolyte in the electrolytic cell 1 decreases, the magnetic force of the electromagnetic plate 12 weakens, causing the height of the half gear 2 to decrease. At this time, the half gear 2 drives the positioning plate 4, the fixing rod 41, the telescopic rod 42, the transmission shaft 44, and the bevel gear 46 to descend synchronously. The meshing position of the bevel gear 46 and the rotating wheel 32 changes, that is, the stretching degree of the positioning spring 43 changes synchronously. Under the reset action of the positioning spring 43, the positioning spring 43 pulls the corresponding telescopic rod 42, the transmission shaft 44, and the electrode plate 47 closer to each other. That is, the coaxial rotation radius of the electrode plate 47 around the positioning plate 4 decreases, and the electrode spacing between the electrode plates 47 decreases. At this time, the electric field strength between the electrode plates 47 increases synchronously, which reduces the weakening effect of the decrease in ion concentration on the electrolysis efficiency, thereby making the electrolysis efficiency a state of dynamic equilibrium.

[0040] It should be noted that when the drive shaft 44, fixed rod 41, and telescopic rod 42 rise and fall along with the half gear 2, the degree of blockage of the material blocking plate 48 against the lower surface of the feed pipe 3 changes synchronously. When the material blocking plate 48 descends, the gap between the feed pipe 3 and the material blocking plate 48 increases. At this time, the rate at which rare earth oxides are injected into the electrolytic cell 1 through the feed pipe 3 increases, thereby increasing the ion concentration of the electrolyte in the electrolytic cell 1. The current of the system circuit increases and drives the half gear 2 and the balancing component to rise as a whole. At this time, the material blocking plate 48 rises synchronously to re-block the feed pipe 3, thereby completing the function of automatically adjusting the injection rate of rare earth oxides during the electrolysis process to achieve dynamic balance of rare earth oxide concentration.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rare earth electrolytic oxide concentration control system, characterized by: Including drive assembly, coaxial assembly, balance assembly and system circuit, the following steps are adopted to realize the method: S1, preparation: by adjusting the voltage of the system circuit to control the drive assembly and the balance assembly, the electrode plate (47) at the bottom of the balance assembly is completely immersed in the electrolyte inside the electrolytic tank (1), at this time the conductivity sensor (14) starts to monitor the conductivity of the electrolyte in the electrolytic tank (1) and records the data, further by feeding pipe (3) to the electrolyte, the rare earth oxide is injected into the electrolyte, and the electrode plate (47) starts to carry out electrolysis work; S2, stirring operation: with the progress of electrolysis operation, the drive assembly works synchronously and the output rotation direction is cyclic intermittent reverse, the drive assembly further drives the coaxial assembly and the balance assembly to rotate synchronously, and the rotation direction of the coaxial assembly and the balance assembly is opposite, thereby completing the multiple stirring operation of the electrolyte in the electrolytic tank (1); S3, dynamic balance: with the progress of electrolysis operation, the ion concentration in the electrolyte in the electrolytic tank (1) gradually decreases, at this time the current of the system circuit decreases and drives the drive assembly and the balance assembly to decrease synchronously, the balance assembly synchronously adjusts the distance between the electrode plates (47) to increase the electric field strength between the electrode plates (47) and balance the electrolysis efficiency, at the same time, the balance assembly synchronously increases the rate of rare earth oxide injection into the electrolytic tank (1) through the feeding pipe (3) to increase the oxide concentration in the electrolyte, thereby realizing the dynamic balance of the oxide concentration; S4, cleaning work: while the stirring operation is carried out, the balance assembly synchronously carries out reciprocating lifting operation at the cathode of the electrode plate (47), by the reciprocating scraping of the balance assembly on the surface of the cathode of the electrode plate (47), the scraping and cleaning work of the metal attached to the surface of the cathode is realized, thereby maintaining the effective contact area of the electrode plate (47) in the electrolyte to balance the electrolysis efficiency.

2. A rare earth electrolytic oxide concentration control system according to claim 1, characterized by: The upper surface of the electrolytic tank (1) is fixedly connected with a fixed frame (11), the opposite surfaces of the top of the fixed frame (11) are fixedly connected with the same electromagnetic plate (12), one of the fixed frames (11) is fixedly connected with a positioning frame (13) on the outer contour of the middle section, the electromagnetic plate (12) is provided with an electromagnetic coil inside the electromagnetic plate (12), the electromagnetic coil is controlled by the system circuit to control the magnetic force, the inner wall of the electrolytic tank (1) is fixedly connected with a conductivity sensor (14) for monitoring the conductivity of the electrolyte in the electrolytic tank (1).

3. A rare earth electrolytic oxide concentration control system according to claim 2, characterised in that: The driving assembly includes a half gear (2) driven by a motor and penetratingly and limitingly rotationally connected inside the positioning frame (13), the end of the half gear (2) away from the positioning frame (13) is intermittently engaged and drivingly connected with an outer gear ring column (21), the inner contour of the outer gear ring column (21) is fixedly connected with a lifting sleeve roller (22), the inner contour of the lifting sleeve roller (22) is fixedly connected with an inner gear ring column (23), the top end of the lifting sleeve roller (22) is penetratingly and limitingly rotationally connected with a positioning ring (24), the top end of the positioning ring (24) is fixedly connected with a tension spring (25) and the other end of the tension spring (25) is fixedly connected to the lower surface of the electromagnetic plate (12); the coaxial assembly includes a feeding pipe (3) for completing the rare earth oxide feeding work and penetratingly and limitingly rotationally connected at the center of the electromagnetic plate (12), the outer contour of the feeding pipe (3) near the middle section is penetratingly and fixedly connected with a plurality of self-rotating wheels (31), the outer contour of the bottom end of the feeding pipe (3) is penetratingly and fixedly connected with a self-rotating wheel (32), the outer contour of the two sides of the self-rotating wheel (31) is engaged and drivingly connected with a transmission wheel (33) and the transmission wheel (33) is also engaged and drivingly connected with the inner gear ring column (23), the shaft center of the transmission wheel (33) is penetratingly and rotationally connected with a positioning pin (34), the outer contour of the feeding pipe (3) is sleeved with a fixed sleeve roller (35) and the fixed sleeve roller (35) is fixedly connected to the lower surface of the electromagnetic plate (12), the fixed sleeve roller (35) is penetratingly and rotationally connected with the transmission wheel (33) through the positioning pin (34); the balance assembly includes a positioning plate (4) fixedly connected to the lower surface of the lifting sleeve roller (22) for realizing rotational stirring and penetratingly and rotationally connected with the feeding pipe (3), the outer contour of the bottom end of the positioning plate (4) is fixedly connected with a fixed rod (41) extending to both sides, the outer contour of the end of the fixed rod (41) away from the positioning plate (4) is sleeved with a telescopic rod (42), the opposite surface of the telescopic rod (42) and the fixed rod (41) is fixedly connected with a positioning spring (43) and the positioning spring (43) is located inside the telescopic rod (42).

4. A rare earth electrolytic oxide concentration control system according to claim 3, characterized by: The end of the telescopic rod (42) away from the fixed rod (41) is penetratingly and limitingly rotationally connected with a transmission shaft (44), the bottom end of the transmission shaft (44) is fixedly connected with a stirring rod (45) and the stirring rod (45) is arranged eccentrically, the outer contour of the position of the transmission shaft (44) near the stirring rod (45) is penetratingly and fixedly connected with an electrode plate (47).

5. A rare earth electrolytic oxide concentration control system according to claim 4, wherein: The outer contour of the middle section of the transmission shaft (44) is also penetrated and rotationally connected with an extension rod (42), a positioning spring (43) and a fixed rod (41), the transmission shaft (44) is penetrated and fixedly connected with bevel gears (46) on the outer contour between the upper and lower fixed rods (41), and the bevel gears (46) are engaged and drivingly connected to the two sides of the second self-rotating wheel (32), the fixed rod (41) located at the middle section of the transmission shaft (44) is fixedly connected with a blocking plate (48) on the opposite surface and the blocking plate (48) abuts against the lower surface of the feeding pipe (3), one of the fixed rods (41) located at the middle section of the transmission shaft (44) is penetrated and drivingly connected with a bevel gear column (5) away from the blocking plate (48), and the bevel gear column (5) is drivingly connected with the bevel gear (46) at the corresponding position through the spline.

6. A rare earth electrolytic oxide concentration control system according to claim 5, wherein: The bottom end of the bevel gear column (5) is fixedly connected with a positioning sleeve (51) which is sleeved on the outer contour of the electrode plate (47) at the corresponding position.

7. A rare earth electrolytic oxide concentration control system according to claim 3, wherein: The system circuit is a series circuit and sequentially passes through and is electrically connected with the half gear (2), the positioning frame (13), the electrode plate (47) and the conductivity sensor (14), the lifting sleeve roller (22) is a permanent magnet and is attracted by the magnetic force of the electromagnetic plate (12).

8. A rare earth electrolytic oxide concentration control system according to claim 7, characterized by: The system circuit adopts constant voltage, and the distance between the electrode plates (47) and the ion concentration of the electrolyte in the electrolytic tank (1) jointly control the resistance value in the system circuit.

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