Method for controlling the lowering distance of a consumable cathode and lifting device

Abstract

The present application relates to the technical field of rare earth alloy production, and discloses a method for controlling the lowering distance of a consumable cathode and a lifting device, which comprises the following steps: collecting the production current in an electrolytic furnace within a production time period t, and establishing a mathematical model between the ampere-hour quantity and the cathode consumption: H=A*K; H is the length consumed by the cathode within the time period t, A is the production cumulative ampere-hour quantity within the time period t, and K is a lowering coefficient; within a time period m after the production time period t, the lifting device controls the cathode to move downward by a distance H, so that the lowering distance of the cathode matches the real-time production condition; based on historical test production data, the values of the lowering coefficient K, the production time period t, and the time period m of the cathode lowering distance are determined; and the method for controlling the lowering distance of the consumable cathode provided by the present application realizes the accurate control of the lowering distance and speed of the ferrous cathode in the rare earth iron alloy production process by establishing the mathematical model between the ampere-hour quantity and the cathode consumption, and collecting the production data in real time.

Description

Technical Field

[0001] This invention relates to the field of rare earth alloy production technology, specifically to a method and lifting device for controlling the descent distance of a consumable cathode. Background Technology

[0002] Rare earth ferroalloys are special alloys that combine rare earth elements and iron. When producing rare earth ferroalloys, a process using consumable iron cathodes is employed in a fluoride molten salt system. A consumable iron cathode refers to the iron material used as the cathode that is gradually consumed during the electrolysis process and participates in the electrolytic reaction.

[0003] However, the above-mentioned production process has the drawbacks of low automation and cumbersome and laborious manual operation. During the production process, workers need to manually lower the iron cathode continuously, and after the cathode is consumed to a certain position, it needs to be replaced manually, which is labor-intensive.

[0004] To address the aforementioned deficiencies, Chinese patent application CN221254729U discloses a device for replacing consumable iron cathodes in rare earth alloy electrolysis. This device suspends the consumable iron cathode with a cantilever and positions it using a limit switch. It also uses a detachable cathode clip to secure the consumable iron cathode, thereby reducing the labor intensity of workers.

[0005] However, the device disclosed in the aforementioned patent application cannot accurately control the speed and length of the iron cathode's descent according to the production conditions inside the furnace. There are cases where the iron cathode descends too quickly or the descent distance is insufficient, which reduces the production quality and leads to problems such as uneven iron content and high carbon content in the product, thus affecting the product's pass rate. Summary of the Invention

[0006] In view of this, the present invention provides a method and lifting device for controlling the descent distance of a consumable cathode, so as to solve the problem of difficulty in accurately controlling the descent speed and distance of the iron cathode according to the production conditions in the furnace.

[0007] In a first aspect, the present invention provides a method for controlling the descent distance of a self-consuming cathode, comprising: S1: during a production time period t, collecting the production current in the reactor and establishing a mathematical model between the ampere-hours and the cathode consumption: H = A × K; where H is the length consumed by the cathode during time period t, A is the cumulative ampere-hours produced during time period t, and K is the descent coefficient; S2: during a time period m after the production time period t, a lifting device controls the cathode to move downward by a distance H, so that the descent distance of the cathode matches the real-time production status; S3: based on historical experimental production data, determining the values ​​of the descent coefficient K, the production time period t, and the time period m during which the cathode descends; S4: using the mathematical model, obtaining the compensation length required by the cathode during the corresponding production time period t in the real-time production process, and the lifting device controlling the cathode to descend the corresponding distance based on the compensation length.

[0008] In an optional implementation, step S4 further includes: S41: within the nth production time period t, the starting point of the data collection time period is t. n The cumulative ampere-hours of production within the reactor are collected as A. n S42: Set the cumulative production ampere-hours as A n Substituting into the mathematical model, we obtain the length H consumed by the cathode within the corresponding production time period t. n S43: During the time period m following the corresponding production time period t, the lifting device controls the cathode to move downwards by a distance H. n Where n is the ordinal number of the production time period t, and the value of n ranges from 1, 2, ..., j, and changes sequentially with the consumption process of the cathode; where t n Let t be the starting time point of the nth production time period. n = (n-1)×t+(n-1)×m.

[0009] In one optional implementation, the production time period t and the start time point t n The units for both , and time period m are seconds.

[0010] In an optional implementation, step S3 further includes: S31: Based on the production status, determining the production time period t to be within the range of 30s to 900s, and selecting at least three test parameters within this range; Based on the production status, determining the decrease coefficient K to be within the range of 0.002 to 0.02, and selecting at least three test parameters within this range; Based on the production status, determining the time period m to be within the range of 2s to 10s, and selecting at least three test parameters within this range; S32: Conducting production tests using the selected test parameters respectively, and collecting the product qualification rate respectively; S33: Using the highest qualification rate as the production indicator, obtaining the values ​​of the production time period t, the time period m, and the decrease coefficient K.

[0011] In an optional implementation, step S32 further includes conducting combined experiments on the selected experimental parameters based on the control variable method.

[0012] In one optional implementation, the method further includes collecting production data within the reactor using a control module during the production time period t.

[0013] The control module is electrically connected to the lifting device and is adapted to control the operation of the lifting device.

[0014] Secondly, the present invention also provides a lifting device for controlling the descent distance of a consumable cathode, applied to the method for controlling the descent distance of a consumable cathode as described in any of the above claims. The lifting device for controlling the descent distance of a consumable cathode includes: a drive assembly; a transmission assembly, the input side of which is connected to the drive assembly; a lifting assembly having a movably disposed lifting column, the lifting column being drively connected to the output side of the transmission assembly; the drive assembly driving the lifting column to rise or fall axially via the transmission assembly; a telescopic assembly connected to the lifting column; the telescopic assembly having a horizontal row extending horizontally, and having a clamp portion at its end, the clamp portion being fixed to a cathode clamp.

[0015] In one optional embodiment, the transmission assembly includes a conveyor belt module and a worm gear reduction module; the conveyor belt module has at least two pulleys and a synchronous belt sleeved on the at least two pulleys; the at least two pulleys are respectively connected to the drive assembly and the worm gear reduction module.

[0016] In one optional embodiment, the lifting assembly further includes a column and a rack, the column being fixed to the ground and the lifting column being movably nested within the column; the rack being fixed to the periphery of the lifting column and extending axially along the lifting column; wherein the rack engages with the worm gear of the worm gear reduction module, and the worm gear reduction module is adapted to drive the rack and the lifting column to move.

[0017] In one optional embodiment, the column is provided with a guide wheel, and the lifting column is provided with a guide groove along the axial direction; wherein, the guide wheel cooperates with the guide groove to limit the lifting action of the lifting shaft.

[0018] In one optional embodiment, the telescopic assembly further includes an outer frame and a lead screw. The outer frame is connected to the lifting column, and the horizontal row passes through the outer frame. A first bracket is fixed to the outer frame, and a second bracket is fixed to the horizontal row. The lead screw is rotatably connected to the first bracket and is driveably connected to the second bracket. A nut is provided at the connection point between the lead screw and the second bracket. The nut is fixed to the second bracket and sleeved around the periphery of the lead screw, which is suitable for driving the second bracket to move horizontally when the lead screw is rotated in a controlled manner.

[0019] In one alternative embodiment, the outer frame is rotatably connected to the end of the lifting column by means of a snap-fit ​​post; one end of the snap-fit ​​post is fixed to the outer frame, and the column body is nested inside the lifting column.

[0020] In one alternative embodiment, the drive assembly is fixed to the ground by means of a mounting base; the drive assembly includes a drive motor and a reducer, the output shaft of the reducer being coaxially connected to the guide wheel; wherein the drive motor is electrically connected to a control module and is adapted to control the operation of the drive motor.

[0021] Beneficial effects: By establishing a mathematical model between ampere-hours and cathode consumption, and by collecting production data in real time to calculate cathode consumption, this method can accurately control the descent distance and speed of the cathode during rare earth alloy production, thereby ensuring the stability and controllability of the production process and improving product quality. Furthermore, since the descent distance of the cathode is matched with the real-time production status, unnecessary waste and waiting time are avoided, thus improving production efficiency.

[0022] Beneficial effects: By determining the optimal descent coefficient K, production time period t, and time period m based on multiple historical experimental production data, and combining this control method, the product process can be optimized to the greatest extent. Compared with the manual operation of the cathode descent method for rare earth iron alloy production, in this embodiment, the electrolysis current is increased by 5%, the monthly output is increased by 7%, the iron content qualification rate in the product is increased by 15%, the carbon content qualification rate is increased by 20%, the production cost is reduced by 12%, and the production process is leapfrog.

[0023] Beneficial effects: By adjusting the parameters in the mathematical model, namely the descent coefficient K, the production time period t, and the time period m, it can adapt to different production conditions and product requirements, and has strong flexibility and adaptability.

[0024] Beneficial effects: By controlling the number of rotations of the drive motor through the electrical connection between the control module and the drive component, the descent height of the lifting column can be controlled, thus achieving precise control of the cathode descent distance. At the same time, the meshing of the worm gear reduction module and the rack further enhances the stability and accuracy of the lifting column descent, ensuring the precision of the cathode descent height. The telescopic component allows the horizontal row to move horizontally, and the position of the cathode can be quickly adjusted by rotating the handwheel to meet production needs. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a flowchart of the method for controlling the descent distance of the self-consuming cathode according to the present invention;

[0027] Figure 2 This is a flowchart of step S4 in the method for controlling the descent distance of the self-consuming cathode according to the present invention;

[0028] Figure 3 This is a flowchart of step S3 in the method for controlling the descent distance of the self-consuming cathode of the present invention;

[0029] Figure 4 This is a schematic diagram of the lifting device for controlling the descent distance of the self-consuming cathode according to the present invention;

[0030] Figure 5 This is a cross-sectional schematic diagram of the lifting device for controlling the descent distance of the self-consuming cathode according to the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Drive assembly; 11. Drive motor; 12. Reducer; 2. Transmission assembly; 21. Conveyor belt module; 211. Pulley; 212. Synchronous belt; 22. Worm gear reduction module; 3. Lifting assembly; 31. Lifting column; 311. Guide groove; 32. Column; 321. Guide wheel; 33. Rack; 4. Telescopic assembly; 41. Horizontal row; 411. Second bracket; 42. Outer frame; 421. First bracket; 43. Lead screw; 44. Snap-fit ​​column; 45. Handwheel; 46. Hoop; 5. Cathode; 6. Mounting base; 8. Reactor. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] The following is combined with Figures 1 to 5 The following describes embodiments of the present invention.

[0038] Example 1

[0039] Figure 1 A flowchart illustrating a preferred embodiment of the present invention is shown.

[0040] like Figure 1As shown, the method for controlling the descent distance of the self-consuming cathode according to a preferred embodiment of the present invention includes: during the production process, within the production time period t, the cumulative ampere-hours consumed by production are linearly related to the length consumed by the cathode 5. The production current in the reactor 8 is collected by the control module, and a mathematical model is established between the ampere-hours consumed and the cathode 5 consumed: H = A × K; where H is the length consumed by the cathode 5 within the time period t, in mm; A is the cumulative ampere-hours consumed within the time period t, in AH; and K is the descent coefficient. The control module is an automated device based on PLC network control. Within the time period m after the production time period t, the lifting device can control the cathode 5 to move downwards by a distance H, so that the descent distance of the cathode 5 matches the real-time production status. The control module is electrically connected to the lifting device and is used to transmit the lifting displacement signal to the lifting device.

[0041] Based on multiple historical trial production data, and guided by the product qualification rate, the optimal values ​​of the descent coefficient K, the production time period t, and the descent time period m of cathode 5 were determined. K is 0.007, the production time period t is 150s, and the time period m is 5s, enabling the mathematical model to provide production guidance. Using this mathematical model, during real-time production, the control module obtains the cumulative ampere-hours of production within the corresponding production time period t and substitutes it into the mathematical model to obtain the length consumed by cathode 5 within that time period t, i.e., the compensation length required for cathode 5. Based on this length, the control module sends a corresponding displacement signal to the lifting device, which then controls the cathode 5 to descend the corresponding distance within the subsequent time period m. This achieves the goal of precisely controlling the descent distance and speed of cathode 5 based on the real-time production status within the furnace.

[0042] Figure 3 The flowchart illustrating step S3 in the method for controlling the descent distance of the self-consuming cathode according to a preferred embodiment of the present invention is shown in the figure.

[0043] like Figure 3 As shown, step S3 includes: based on the production status, determining the range of the production time period t to be 30s to 900s, and selecting at least three experimental parameters within the range, specifically 30s, 150s, and 900s.

[0044] Based on the production situation, the range of the decrease coefficient K is determined to be 0.002 to 0.02, and at least three experimental parameters are selected within this range, specifically 0.002, 0.007, 0.01, and 0.02.

[0045] Based on the production situation, the value range of time period m is determined to be 2s to 10s, and at least three experimental parameters are selected within the range, specifically 2s, 5s, and 10s.

[0046] Production tests were conducted using the selected test parameters, and the product qualification rates were collected separately. The selected test parameters could be combined using the controlled variable method to obtain multiple sets of test data.

[0047] Using the highest pass rate as the production indicator, that is, guided by the pass rate, the value of the production time period t under the highest pass rate is 150 seconds, the value of the time period m is 5 seconds, and the value of the decrease coefficient K is 0.007.

[0048] The determined production time period t, the descent coefficient K, and multiple experimental parameters for time period m were combined using the controlled variable method to obtain the following experimental cases. The production experimental data corresponding to the multiple experimental cases and manual operations are shown in the table below:

[0049]

[0050] As shown in the table, in Experiment 1, the cathode 5 was placed manually, resulting in a lower pass rate for both iron and carbon content in the product.

[0051] Based on the comprehensive test examples 2 to 10, it can be seen that the average pass rate of iron and carbon content of the product is the highest when the production time period t is 150s. Therefore, the value of the production time period t is 150s.

[0052] Based on the comprehensive test examples 2 to 10, it can be seen that when the reduction coefficient K is 0.007, the average pass rate of iron content and carbon content of the product is the highest. Therefore, the value of the reduction coefficient K is 0.007.

[0053] Based on the comprehensive test examples 2 to 10, it can be seen that the average pass rate of iron and carbon content of the product is the highest when the time period m is 5s. Therefore, the value of time period m is 5s.

[0054] Figure 2 The flowchart illustrating step S4 in the method for controlling the descent distance of the self-consuming cathode according to a preferred embodiment of the present invention is shown in the figure.

[0055] like Figure 2 As shown, step S4 includes: within the nth production time period t, the starting point of the data acquisition time period is tn, and the cumulative production ampere-hours in the reactor 8 are collected as An; substituting the cumulative production ampere-hours as An into the mathematical model, the length H consumed by the cathode 5 within the corresponding production time period t is obtained. n During the time period m following the corresponding production time period t, the lifting device controls the cathode 5 to move downwards by a distance H. n Where, n is the ordinal number of the production time period t, and the value of n ranges from 1, 2, ..., j, and changes sequentially with the consumption process of cathode 5; tn is the starting time point of the nth production time period t, and the starting time point t n= (n-1)×t+(n-1)×m.

[0056] Specifically, during the first production time period t, the ordinal number n is 1, the data acquisition time starts at t1 (0 seconds), the production current is in the range of 4500A to 6500A, and the production time period t used for data acquisition is 150 seconds. During the period from 0 seconds to 150 seconds, the cumulative ampere-hours collected are 212AH. Based on H = A × K, where K is 0.007, the length H1 consumed by the iron cathode 5 during the period from 0 seconds to 150 seconds is 1.484mm. Subsequently, the control module feeds back a displacement signal of 1.484mm to the servo motor of the lifting device. The servo motor drives the lifting assembly 3 to achieve the first descent of the iron cathode 5. During the time period m (5 seconds), i.e., within 150 seconds to 155 seconds, the 1.484mm displacement is completed. The descent distance is mm; during the second production time period t, the ordinal number n is 2, and the data acquisition time starting point t2 is 155s. During the time period from 155s to 305s, the cumulative ampere-hours collected are 251AH. Based on H=A×K, the length H2 consumed by the iron cathode 5 during the time period from 155s to 305s is 1.757mm. Then, the control module feeds back a displacement signal of 1.757mm descent distance to the lifting device to realize the second descent of the iron cathode 5. During the time period m, that is, during the time period from 305s to 310s, the descent distance of 1.757mm is completed. The process of collecting, calculating, feeding back, and descent is repeated in sequence. After the cathode 5 is dissolved and consumed to a certain extent, the cathode 5 at the lifting device is replaced, and the above steps are repeated.

[0057] The method for controlling the descent distance of the consumable cathode provided in this embodiment establishes a mathematical model between the ampere-hour quantity and the consumption of cathode 5, and calculates the consumption of cathode 5 by collecting production data in real time. This method can accurately control the descent distance and speed of the iron cathode 5 during the rare earth ferroalloy production process, thereby ensuring the stability and controllability of the production process and improving product quality. Furthermore, since the descent distance of cathode 5 is matched with the real-time production status, unnecessary waste and waiting time are avoided, thus improving production efficiency.

[0058] The method for controlling the descent distance of the self-consuming cathode provided in this embodiment determines the optimal descent coefficient K, production time period t, and time period m based on multiple historical experimental production data. Combined with this control method, the product process can be optimized to the greatest extent. Compared with the rare earth iron alloy production method of manually lowering the cathode 5, the production in this embodiment has increased the electrolysis current by 5%, increased the monthly output by 7%, increased the iron content qualification rate of the product by 15%, increased the carbon content qualification rate by 20%, and reduced the production cost by 12%, representing a leap in production process.

[0059] The method for controlling the descent distance of the self-consuming cathode provided in this embodiment can adapt to different production conditions and product requirements by adjusting the parameters in the mathematical model, namely the descent coefficient K, the production time period t, and the time period m, and has strong flexibility and adaptability.

[0060] Example 2

[0061] Figure 4 A schematic diagram of a lifting device for controlling the descent distance of a self-consuming cathode according to a preferred embodiment of the present invention is shown.

[0062] It should be clarified that the lifting device used in the method for controlling the descent distance of the self-consuming cathode is not limited to the specific device mentioned in this embodiment. It is only used as an example to illustrate the application scenarios and feasibility of this method. In other words, this method is not limited to any specific lifting device, but can be widely applied to various devices that can achieve lifting functions.

[0063] like Figure 4 As shown, the lifting device for controlling the descent distance of the self-consuming cathode includes: a drive assembly 1, wherein the control module is electrically connected to the drive motor 11 of the drive assembly 1; a transmission assembly 2, wherein the input side of the transmission assembly 2 is connected to the drive assembly 1; a lifting assembly 3, having a movably configured lifting column 31, wherein the lifting column 31 is drive-connected to the output side of the transmission assembly 2; the control module sends a displacement signal to the drive assembly 1, and the drive assembly 1 then drives the lifting column 31 to rise or fall axially via the transmission assembly 2; and a telescopic assembly 4, connected to the lifting column 31, wherein the lifting column 31 can drive... The telescopic assembly 4 rises and falls synchronously; the telescopic assembly 4 has a horizontal row 41, which can be formed by connecting multiple copper busbars. The horizontal row 41 extends horizontally as a whole. The end of the horizontal row 41 is provided with a hoop 46, which is fixed to the cathode 5. The hoop is formed by bending the edge plate of the horizontal row to form at least two oppositely arranged buckles. The buckles are set around the cathode and fixed by bolts. The horizontal row 41 has a certain length in the horizontal direction to prevent the telescopic assembly 4 from interfering with the reactor 8 when the cathode 5 descends; the cathode 5 rises and falls synchronously with the telescopic assembly 4 and the lifting column 31.

[0064] Specific structural examples of the present invention are described below.

[0065] The transmission assembly 2 includes a conveyor belt module 21 and a worm gear reduction module 22. The conveyor belt module 21 has at least two pulleys 211 and a synchronous belt 212 sleeved on the at least two pulleys 211. The at least two pulleys 211 are respectively connected to the drive assembly 1 and the worm gear reduction module 22. The output shaft of the drive assembly 1 is coaxially connected to the drive pulley 211. During production, after receiving a downward displacement signal, the drive assembly 1 drives the drive pulley 211 to rotate, and with the transmission action of the synchronous belt 212, the driven pulley 211 rotates. The driven pulley 211 is coaxially connected to the worm of the worm gear reduction module 22. The rotation of the driven pulley 211 can drive the worm and worm gear to rotate.

[0066] The lifting assembly 3 also includes a column 32 and a rack 33. The column 32 is fixed to the ground, and the lifting column 31 is movably nested in the column 32. The rack 33 is fixed to the periphery of the lifting column 31 and extends axially along the lifting column 31. The column 32 has a corresponding clearance groove at the extension position of the rack 33 to prevent structural interference. The rack 33 meshes with the worm gear of the worm gear reduction module 22. During production, after the drive assembly 1 receives a downward displacement signal and drives the worm gear to rotate, the rotation of the worm gear can cause the rack 33 and the lifting column 31 to descend. The number of rotations of the drive motor 11 is controlled to control the descent height of the lifting column 31, so that the descent height of the cathode 5 is Hn.

[0067] The telescopic assembly 4 also includes an outer frame 42 and a lead screw 43. The outer frame 42 is connected to the lifting column 31, and the horizontal row 41 is disposed through the outer frame 42. A first bracket 421 is fixed at the outer frame 42, and a second bracket 411 is fixed at the horizontal row 41. The lead screw 43 is rotatably connected to the first bracket 421. The lead screw 43 is drive-connected to the second bracket 411. A nut is provided at the connection position between the lead screw 43 and the second bracket 411. The nut is fixed to the second bracket 411 and sleeved around the circumference of the lead screw 43, which is suitable for driving the second bracket 411 to move horizontally when the lead screw 43 is rotated in a controlled manner. A handwheel 45 is installed at the end of the lead screw 43. By rotating the handwheel 45, the lead screw 43 is rotated, thereby causing the horizontal row 41 to move back and forth, thus ensuring that the position of the cathode 5 meets the production requirements.

[0068] In one optional embodiment, the drive assembly 1 is fixed to the ground by means of a mounting base 6; the drive assembly 1 includes a drive motor 11 and a reducer 12, the output shaft of the reducer 12 is coaxially connected to the guide wheel 321; wherein, the drive motor 11 is electrically connected to the control module and is adapted to control the action of the drive motor 11, and the drive motor 11 is a servo motor.

[0069] The device for controlling the descent distance of the self-consuming cathode provided in this embodiment controls the number of rotations of the drive motor 11 through the electrical connection between the control module and the drive assembly 1, thereby controlling the descent height of the lifting column 31 and achieving precise control of the descent distance of the cathode 5. At the same time, the meshing of the worm gear reduction module 22 and the rack 33 further enhances the stability and accuracy of the descent of the lifting column 31, ensuring the accuracy of the descent height of the cathode 5. The telescopic assembly 4 allows the horizontal row 41 to move in the horizontal direction, and the position of the cathode 5 can be quickly adjusted by rotating the handwheel 45 to meet production needs.

[0070] As a preferred technical solution, the column 32 is provided with a guide wheel 321, and there can be multiple guide wheels 321. The lifting column 31 is provided with a guide groove 311 along the axial direction, and the guide groove 311 corresponds to the guide wheel 321 respectively. The guide wheel 321 cooperates with the guide groove 311 to limit the lifting action of the lifting shaft and prevent the lifting column 31 from rotating and deviating around the axial direction during the movement.

[0071] As a preferred technical solution, the outer frame 42 is rotatably connected to the end of the lifting column 31 by means of the snap-fit ​​post 44; one end of the snap-fit ​​post 44 is fixed to the outer frame 42, and the column body is nested inside the lifting column 31. The snap-fit ​​post 44 allows the telescopic component 4 and the cathode 5 to be rotated and adjusted around the axis of the lifting column 31 to meet production requirements.

[0072] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and all such modifications and variations fall within the scope defined by the present invention.

Claims

1. A method for controlling the descent distance of a consumable cathode, characterized in that, include: S1: During the production time period t, the production current in the electrolytic furnace is collected, and a mathematical model is established between the ampere-hour quantity and the cathode consumption. H = A × K Where H is the length consumed by the cathode within time period t, A is the cumulative ampere-hours produced within time period t, and the cumulative ampere-hours produced is the cumulative ampere-hours; K is the descent coefficient; S2: During the time period m after the production time period t, the lifting device controls the cathode to move downward by a distance H, so that the distance the cathode descends matches the real-time production status. S3: Based on historical experimental production data, determine the values ​​of the descent coefficient K, the production time period t, and the time period m for the cathode descent distance; S4: Using the mathematical model, the required compensation length of the cathode within the corresponding production time period t is obtained during real-time production. The lifting device then controls the cathode to descend the corresponding distance based on the compensation length.

2. The method for controlling the descent distance of the consumable cathode according to claim 1, characterized in that, Step S4 also includes: S41: In the nth production time period t, the starting point of the data collection time period is t. n The cumulative ampere-hours of production within the reactor are collected as A. n ; S42: Set the cumulative production ampere-hours as A n Substituting into the mathematical model, we obtain the length H consumed by the cathode within the corresponding production time period t. n ; S43: During the time period m following the corresponding production time period t, the lifting device controls the cathode to move downwards by a distance H. n ; Where n is the ordinal number of the production time period t, and the value of n is in the range of 1, 2, ..., j, and is taken sequentially as the cathode is consumed; Among them, t n Let t be the starting time point of the nth production time period. n = (n-1)×t+(n-1)×m.

3. The method for controlling the descent distance of the consumable cathode according to claim 2, characterized in that, The production time period t and the start time point t n Both and the time period m are in seconds.

4. The method for controlling the descent distance of the self-consuming cathode according to claim 2 or 3, characterized in that, Step S3 also includes, S31: Based on the production situation, determine the range of the production time period t to be 30s to 900s, and select at least three experimental parameters within the range; Based on the production situation, the range of the decrease coefficient K was determined to be 0.002 to 0.02, and at least three experimental parameters were selected within this range. Based on the production situation, the value range of time period m is determined to be 2s to 10s, and at least three experimental parameters are selected within the range. S32: Conduct production tests using the selected test parameters and collect the product qualification rate data for each test. S33: Using the highest pass rate as the production indicator, obtain the values ​​of the production time period t, the time period m, and the decrease coefficient K.

5. The method for controlling the descent distance of the consumable cathode according to claim 4, characterized in that, Step S32 also includes conducting combined experiments on the selected experimental parameters based on the control variable method.

6. The method for controlling the descent distance of the self-consuming cathode according to claim 2 or 3, characterized in that, It also includes collecting production data inside the reactor using the control module during the production time period t; The control module is electrically connected to the lifting device and is adapted to control the operation of the lifting device.

7. A lifting device for controlling the descent distance of a consumable cathode, employing, but not limited to, the method for controlling the descent distance of a consumable cathode as described in any one of claims 1-6, characterized in that, The lifting device for controlling the descent distance of the self-consuming cathode includes: Driver component (1); Transmission assembly (2), the input side of which is connected to the drive assembly (1); The lifting assembly (3) has a movable lifting column (31), which is connected to the output side of the transmission assembly (2) in a transmission manner; the drive assembly (1) drives the lifting column (31) to rise or fall axially by means of the transmission assembly (2); Telescopic component (4) is connected to the lifting column (31); the telescopic component (4) has a horizontal row (41) which extends horizontally and has a hoop (46) at the end, which is fixed to the cathode (5).

8. The lifting device for controlling the descent distance of the consumable cathode according to claim 7, characterized in that, The transmission assembly (2) includes a conveyor belt module (21) and a worm gear reduction module (22); The conveyor belt module (21) has at least two pulleys (211) and a synchronous belt (212) sleeved on the at least two pulleys (211); At least two of the pulleys (211) are respectively connected to the drive assembly (1) and the worm gear reduction module (22).

9. The lifting device for controlling the descent distance of the self-consuming cathode according to claim 8, characterized in that, The lifting assembly (3) also includes a column (32) and a rack (33). The column (32) is fixed to the ground, and the lifting column (31) is movably nested in the column (32). The rack (33) is fixed around the lifting column (31) and extends along the axial direction of the lifting column (31); The rack (33) engages with the worm gear of the worm gear reduction module (22), and the worm gear reduction module (22) is adapted to drive the rack (33) and the lifting column (31) to move.

10. The lifting device for controlling the descent distance of the consumable cathode according to claim 9, characterized in that, The column (32) is provided with a guide wheel (321), and the lifting column (31) is provided with a guide groove (311) along the axial direction; The guide wheel (321) cooperates with the guide groove (311) to limit the lifting action of the lifting column (31).

11. The lifting device for controlling the descent distance of the consumable cathode according to claim 7, characterized in that, The telescopic component (4) also includes an outer frame (42) and a lead screw (43). The outer frame (42) is connected to the lifting column (31), and the horizontal row (41) is arranged through the outer frame (42). A first bracket (421) is fixed at the outer frame (42), and a second bracket (411) is fixed at the horizontal row (41); The lead screw (43) is rotatably connected to the first bracket (421); The lead screw (43) is connected to the second bracket (411) in a transmission manner. A nut is provided at the connection position between the lead screw (43) and the second bracket (411). The nut is fixed to the second bracket (411) and sleeved on the lead screw (43), which is suitable for driving the second bracket (411) to move in the horizontal direction when the lead screw (43) is rotated in a controlled manner.

12. The lifting device for controlling the descent distance of the consumable cathode according to claim 11, characterized in that, The outer frame (42) is rotatably connected to the end of the lifting column (31) by means of a snap-fit ​​post (44); One end of the snap-fit ​​post (44) is fixed to the outer frame (42), and the post is nested inside the lifting post (31).

13. The lifting device for controlling the descent distance of the consumable cathode according to claim 8, characterized in that, The drive assembly (1) is fixed to the ground by means of the mounting base (6); The drive assembly (1) includes a drive motor (11) and a reducer (12), and the output shaft of the reducer (12) is coaxially connected to the pulley (211); The drive motor (11) is electrically connected to the control module and is adapted to control the operation of the drive motor (11).

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