Slurry conveying pipeline cleaning method

Abstract

The present invention provides a method for cleaning a slurry conveying pipeline, and relates to the technical field of batteries. The method is used for cleaning a slurry conveying pipeline, and the cleaning device comprises a ball-pushing unit for cleaning slurry, and a driving unit for pushing the ball-pushing unit to move in the slurry conveying pipeline. The cleaning method is a method for cleaning each branch pipeline, and the cleaning method comprises obtaining an initial air intake pressure of the ball-pushing unit, controlling the driving unit to apply pressure, and pushing the ball-pushing unit to move in the pipeline. When it is judged to be in a first preset position, a first ball-pushing pressure is applied to push the ball-pushing unit to continue to move. When it is judged to be in a second preset position, a second ball-pushing pressure is applied to push the ball-pushing unit to continue to move. When it is judged to be in a third preset position, the cleaning of the first branch pipeline in the slurry conveying pipeline is completed. The above steps are executed cyclically to complete the cleaning of the slurry conveying pipeline, and the problem that the speed of the pipe cleaning ball in the prior art is difficult to control, resulting in difficulty in cleaning the slurry in the pipeline.

Description

Technical Field

[0001] The present invention relates to the field of battery technology, and in particular to a method for cleaning a slurry conveying pipeline. Background Art

[0002] In the pre-production of lithium-ion batteries, there are processes such as homogenization, coating, and rolling. After the homogenization produces qualified slurry, the finished slurry is transported to the coating machine through the slurry conveying pipeline for subsequent production. The length of the pipeline used to convey the slurry is usually about 100 meters. During the transportation process, in order to ensure the continuity and pollution-free of the slurry, the slurry conveying pipeline needs to be cleaned regularly to empty the slurry in the pipeline and remove possible impurities.

[0003] Pushing a pipe cleaning ball is a cleaning method commonly used in the industry. By pushing a pipe cleaning ball in the pipe, the pressure of compressed air is used to squeeze out the slurry in the pipe along the inner wall of the pipe, while removing the dried slurry and adhesions on the inner wall of the pipe. However, when cleaning the pipe with the pipe cleaning ball in the prior art, the speed of the pipe cleaning ball is difficult to control, and the state of the slurry in the pipe (such as viscosity, degree of drying) is different. Under the same pressure, the running speed of the pipe cleaning ball will vary greatly, which may cause the pipe cleaning ball to hit the pipe valve too fast, or stagnate due to large pipe resistance, affecting safety and production efficiency. Summary of the invention

[0004] The main purpose of the present invention is to provide a method for cleaning a slurry conveying pipeline, so as to solve the problem in the prior art that the speed of the cleaning ball is difficult to control, resulting in difficulty in cleaning the slurry in the pipeline.

[0005] In order to achieve the above-mentioned object, according to one aspect of the present invention, a slurry conveying pipeline cleaning method is provided, the method is used for a slurry conveying pipeline cleaning device, the slurry conveying pipeline cleaning device comprises a ball pushing unit and a driving unit, the driving unit is used to drive the ball pushing unit to enter the slurry conveying pipeline to clean the residual secondary battery slurry in the slurry conveying pipeline, the slurry conveying pipeline comprises a plurality of branch pipelines connected in sequence, the cleaning method comprises a branch pipeline cleaning method for cleaning each branch pipeline, the branch pipeline cleaning method comprises:

[0006] Obtain the initial air inlet pressure of the ball pusher unit;

[0007] Controlling the driving unit to apply initial air intake pressure to the slurry conveying pipeline to push the ball pushing unit to move from an initial position in the slurry conveying pipeline;

[0008] When it is determined that the ball-pushing unit is at the first preset position, the driving unit is controlled to apply a first ball-pushing pressure into the slurry conveying pipeline to push the ball-pushing unit to continue moving;

[0009] When it is determined that the ball-pushing unit is at the second preset position, the driving unit is controlled to apply a second ball-pushing pressure into the slurry conveying pipeline to push the ball-pushing unit to continue moving;

[0010] When it is determined that the ball pushing unit is at the third preset position, the residual secondary battery slurry in the first section of the branch pipe is cleaned;

[0011] The branch pipeline cleaning method is cyclically executed to sequentially clean a plurality of branch pipelines, and the first ball pushing pressure and the second ball pushing pressure are both pressures at which the driving unit delivers compressed gas into the slurry delivery pipeline.

[0012] Furthermore, before the step of controlling the driving unit to apply a first ball-pushing pressure to the slurry conveying pipeline, the method further comprises:

[0013] Obtaining a first running time when the ball pushing unit moves from an initial position to a first preset position;

[0014] The first ball pushing pressure is obtained according to the initial intake pressure and the first running time.

[0015] Furthermore, before the step of controlling the driving unit to apply a second ball-pushing pressure to the slurry conveying pipeline, the method further comprises:

[0016] Obtaining a second running time of the ball pushing unit running from the initial position to the second preset position;

[0017] The second ball pushing pressure is obtained according to the first ball pushing pressure and the second operation time.

[0018] Further, the step of obtaining a first ball pushing pressure according to the initial intake pressure and the first running time includes:

[0019] Substitute the initial intake pressure and the first running time into the first formula to obtain the first ball pushing pressure;

[0020] Among them, the first formula is as follows:

[0021] ;

[0022] Where: P 1 is the first push ball pressure, in units of ,

[0023] P 0 is the initial intake pressure, in units of ;

[0024] T 1 The time for the ball-pushing unit to move to the first preset position, in minutes;

[0025] T 0is the starting time of the ball-pushing unit at the initial position, in min;

[0026] T P1 is the first time coefficient, Among them, the first running time is T 1 With T 0 The time difference between .

[0027] Further, the step of obtaining the second ball pushing pressure according to the first ball pushing pressure and the second running time includes:

[0028] Substitute the first ball pushing pressure and the second running time into the second formula to obtain the second ball pushing pressure;

[0029] Among them, the second formula is as follows:

[0030] ;

[0031] Where: P 2 is the second push ball pressure, in units of ,

[0032] P 1 is the first push ball pressure, in units of ;

[0033] T 2 The time it takes for the ball-pushing unit to move from the initial position to the second preset position, in minutes;

[0034] T 1 The time it takes for the ball-pushing unit to move from the initial position to the first preset position, in minutes;

[0035] T P2 is the second time coefficient, ;

[0036] Among them, the second running time is T 2 With T 1 The time difference between .

[0037] Furthermore, a first on-off valve is provided at the inlet end of each branch pipeline, and a second on-off valve is provided at the outlet end of each branch pipeline. The cleaning method further comprises:

[0038] When it is determined that the ball-pushing unit is in the initial position, the first on-off valve of the upper branch pipeline is controlled to be closed, and the second on-off valve is controlled to be opened;

[0039] When it is determined that the ball pushing unit is in the third preset position, the second on-off valve in the previous branch pipeline is controlled to be closed, and the first on-off valve in the next branch pipeline adjacent thereto is controlled to be opened, so that the ball pushing unit enters from the previous branch pipeline into the next branch pipeline adjacent thereto.

[0040] Furthermore, the cleaning method also includes:

[0041] The display device is used to display the real-time position of the ball pushing unit in the slurry conveying pipeline.

[0042] Further, the cleaning method is based on the following slurry conveying pipeline cleaning device, the cleaning device includes: at least two ball pushing units, the two ball pushing units are connected by a connecting piece; wherein each ball pushing unit includes: a ball pushing body, and scraping parts are respectively provided at both ends of the ball pushing body, and the outer edge of the scraping part contacts the inner wall surface of the slurry conveying pipeline, so as to scrape off the slurry in the slurry conveying pipeline to avoid adhesion under the drive of the driving unit; wherein, before obtaining the ball-pushing time and initial air intake pressure of the ball pushing unit, the cleaning method also includes:

[0043] Connecting at least two ball-pushing units using a connecting piece;

[0044] Install a scraping component on each ball-pushing unit, and place at least two ball-pushing units equipped with the scraping components in the slurry conveying pipeline;

[0045] The driving unit is used to push the ball pushing unit to move in the slurry conveying pipeline.

[0046] Further, the push ball body comprises: a push ball shell, the push ball shell has an adsorption space, and an adsorption gap is formed between at least a part of the outer wall surface of the push ball shell and the inner wall surface of the slurry conveying pipeline; an adsorption component, the adsorption component is arranged in the adsorption space to adsorb metal particles on the inner wall surface of the slurry conveying pipeline to the outer wall surface of the push ball shell through the adsorption gap; wherein, after the step of pushing the push ball unit to move in the slurry conveying pipeline, the cleaning method further comprises:

[0047] An adsorption space is provided in the shell of the pushed ball, and an adsorption component is arranged in the adsorption space;

[0048] An annular groove is provided on the outer wall surface of the ball pushing housing to form an adsorption gap.

[0049] Furthermore, the cleaning method also includes:

[0050] Adjust the adsorption gap so that the adsorption gap is less than or equal to 8 mm; and / or,

[0051] The adsorption strength of the adsorption component is greater than or equal to 12000GS; and / or,

[0052] A flexible material is installed on at least a portion of the outer wall of the ball push housing.

[0053] By applying the technical solution of the present invention, the initial air intake pressure of the ball-pushing unit is set, and when the ball-pushing unit moves to the first preset position, the pressure is automatically adjusted to the first ball-pushing pressure, thereby realizing accurate control of the movement speed of the ball-pushing unit in the slurry conveying pipeline. This method avoids the speed fluctuation of the ball-pushing unit caused by different slurry states in the pipeline, reduces the risk of the ball-pushing unit hitting the pipeline valve due to excessive speed or stagnating due to excessive speed, thereby ensuring the safety and efficiency of the cleaning process.

[0054] The slurry delivery pipeline in the present application is a multi-section branch pipeline connected in sequence. After each section of the pipeline is cleaned, it is ensured to be in a closed state, and then the next section is cleaned in sequence. This method can ensure that the slurry in each branch pipeline is removed as much as possible, thereby improving the cleanliness of the entire pipeline system. In particular, when the ball pusher unit slowly passes through the second on-off valve of a section of the pipeline and completes the cleaning, the second on-off valve is immediately closed, which can effectively prevent the cleaned slurry from re-attaching to the inner wall of the pipeline and causing secondary pollution.

[0055] By adjusting the first pushing ball pressure when the pushing ball unit is in the first preset position, the movement speed of the pushing ball unit can be accurately controlled to avoid extended cleaning time due to insufficient pressure or equipment damage due to excessive pressure, so that the entire cleaning process can be accelerated, production downtime is reduced, and the continuity and efficiency of secondary battery slurry production are improved.

[0056] During the cleaning process, the position and movement status of the ball pusher unit are monitored in real time, and the pressure is automatically adjusted according to the monitoring results to form a closed-loop control system. This adjustment method makes the cleaning process more controllable, reduces the uncertainty in the cleaning process, and improves the stability and reliability of the slurry conveying pipeline cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0058] Figure 1 A flow chart showing a slurry conveying pipeline cleaning method according to an embodiment of the present application is shown;

[0059] Figure 2 A schematic diagram showing the structure of a cleaning device according to an embodiment of the present application is shown;

[0060] Figure 3 A cross-sectional view of a cleaning device according to an embodiment of the present application is shown;

[0061] Figure 4 A schematic diagram showing a connection hole of an embodiment of the present application is shown;

[0062] Figure 5 The embodiment of the present application is shown Figure 2 The enlarged schematic diagram of point A in the middle;

[0063] Figure 6 A schematic diagram of a ball pushing unit according to an embodiment of the present application is shown;

[0064] Figure 7 A schematic diagram showing a ball pushing unit in an embodiment of the present application being located in a slurry conveying pipeline.

[0065] The above drawings include the following reference numerals:

[0066] 1. Push ball unit; 2. Connector; 3. Push ball body; 301. Push ball shell; 3011. Push ball frame; 3012. Mounting shell; 302. Adsorption component; 4. Scraper component; 401. Scraper body; 402. Scraper ring; 4021. First scraper part; 4022. Second scraper part; 5. Connector; 501. Connecting hole; 6. Slurry tank; 7. Slurry delivery pipeline;

[0067] X1, initial position; X2, first preset position; X3, second preset position; X4, third preset position. DETAILED DESCRIPTION

[0068] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0069] In the pre-production of lithium-ion batteries, there are processes such as homogenization, coating, and rolling. After the homogenization produces qualified slurry, the finished slurry is transported to the coating machine through the slurry conveying pipeline for subsequent production. The length of the pipeline used to convey the slurry is usually about 100 meters. During the transportation process, in order to ensure the continuity and pollution-free of the slurry, the slurry conveying pipeline needs to be cleaned regularly to empty the slurry in the pipeline and remove possible impurities.

[0070] Pushing a pipe cleaning ball is a cleaning method commonly used in the industry. By pushing a pipe cleaning ball in the pipe, the pressure of compressed air is used to squeeze out the slurry in the pipe along the inner wall of the pipe, while removing the dried slurry and adhesions on the inner wall of the pipe. However, when cleaning the pipe with the pipe cleaning ball in the prior art, the speed of the pipe cleaning ball is difficult to control, and the state of the slurry in the pipe (such as viscosity, degree of drying) is different. Under the same pressure, the running speed of the pipe cleaning ball will vary greatly, which may cause the pipe cleaning ball to hit the pipe valve too fast, or stagnate due to large pipe resistance, affecting safety and production efficiency.

[0071] The main purpose of the present application is to provide a slurry conveying pipeline cleaning method for the above problems. The cleaning method is used for a slurry conveying pipeline cleaning device. The slurry conveying pipeline cleaning device includes a ball pushing unit 1 and a driving unit. The driving unit is used to drive the ball pushing unit 1 to enter the slurry conveying pipeline 7 to clean the residual secondary battery slurry in the slurry conveying pipeline 7. The slurry conveying pipeline 7 includes a plurality of branch pipelines connected in sequence. The cleaning method includes a branch pipeline cleaning method for cleaning each branch pipeline. The branch pipeline cleaning method includes:

[0072] Obtaining the initial air intake pressure of the ball pushing unit 1;

[0073] Control the driving unit to apply initial air intake pressure to the slurry conveying pipeline 7 to push the ball pushing unit 1 to move from the initial position X1 in the slurry conveying pipeline 7;

[0074] When it is determined that the ball-pushing unit 1 is at the first preset position X2, the driving unit is controlled to apply a first ball-pushing pressure into the slurry conveying pipeline 7 to push the ball-pushing unit 1 to continue moving;

[0075] When it is determined that the ball-pushing unit 1 is at the second preset position X3, the driving unit is controlled to apply a second ball-pushing pressure into the slurry conveying pipeline 7 to push the ball-pushing unit 1 to continue moving;

[0076] When it is determined that the ball-pushing unit 1 is at the third preset position X4, the residual secondary battery slurry in the first section of the branch pipe is cleaned;

[0077] The branch pipeline cleaning method is cyclically executed to sequentially clean a plurality of branch pipelines, and the first ball pushing pressure and the second ball pushing pressure are both pressures at which the driving unit delivers compressed gas into the slurry delivery pipeline 7 .

[0078] Specifically, Figure 1In the present embodiment, the slurry conveying pipeline cleaning device is used to convey the slurry for preparing the secondary battery. After the slurry of the secondary battery is conveyed, some slurry of the secondary battery still remains in the slurry conveying pipeline 7. The slurry conveying pipeline cleaning method provided in the present application is used to clean the residual slurry of the secondary battery in the slurry conveying pipeline 7. The slurry conveying pipeline cleaning device includes a ball pushing unit 1 and a driving unit. The driving unit is a compression component in the present embodiment, which is used to convey compressed gas into the slurry conveying pipeline 7 to push the ball pushing unit 1 in the slurry conveying pipeline 7 to move in the slurry conveying pipeline 7 to clean the residual slurry of the secondary battery in the slurry conveying pipeline 7. The slurry conveying pipeline 7 includes A plurality of branch pipelines are connected in sequence, each branch pipeline is respectively provided with a first on-off valve and a second on-off valve, and each branch pipeline cleaning method includes obtaining a preset initial air intake pressure of the ball pushing unit 1, controlling the driving unit to apply the initial air intake pressure to the ball pushing unit 1, so that the ball pushing unit 1 moves from the initial position X1 in the slurry conveying pipeline 7 under the push of the initial air intake pressure, and during the movement of the ball pushing unit 1, when it is judged that the ball pushing unit 1 is in the first preset position X2, controlling the driving unit to apply the first ball pushing pressure to the ball pushing unit 1 to push the ball pushing unit 1 to continue to move in the slurry conveying pipeline 7, and when the ball pushing unit 1 is in the second preset position X3, controlling the driving unit to apply the second ball pushing pressure to the ball pushing unit 1 The force is used to push the ball-pushing unit 1 to continue moving in the slurry conveying pipeline 7. When the ball-pushing unit 1 moves to the third preset position X4, the cleaning of one section of the branch pipeline is completed. The inlet of each branch pipeline is provided with a first on-off valve, and the outlet is provided with a second on-off valve (when the ball-pushing unit 1 cleans each branch pipeline, the first on-off valve of the branch pipeline being cleaned is in a closed state, the second on-off valve is in an open state, and the first on-off valve and the second on-off valve of the next branch pipeline adjacent to the branch pipeline being cleaned and not being cleaned are both in a closed state, so that the pipeline being cleaned can be ensured to be in a closed state). When the ball-pushing unit 1 slowly passes through the second on-off valve of the first branch pipeline from the third preset position X4, the first on-off valve of the branch pipeline being cleaned is closed. When the on-off valve is opened, the second on-off valve of the first branch pipe is controlled to be closed to complete the cleaning of the first branch pipe, and the slurry of the cleaned secondary battery is transported to the corresponding slurry tank 6 through the corresponding pipe, and then the first on-off valve of the second branch pipe adjacent to the first branch pipe is controlled to be opened. When the ball-pushing unit 1 moves to the set position in the second branch pipe, the set position is used as the initial position X1, and the driving unit is controlled to apply initial intake pressure to the slurry conveying pipe 7 to push the ball-pushing unit 1 to move in the slurry conveying pipe 7, and repeat the steps of cleaning the first branch pipe, and repeat this reciprocating cycle until all branch pipes are cleaned and the cleaning of the slurry conveying pipe 7 is completed.

[0079] By setting the initial air intake pressure of the ball-pushing unit 1 and automatically adjusting to the first ball-pushing pressure when the ball-pushing unit 1 moves to the first preset position X2, accurate control of the moving speed of the ball-pushing unit 1 in the slurry conveying pipeline 7 is achieved. This method avoids the speed fluctuation of the ball-pushing unit 1 caused by different slurry states in the pipeline, reduces the risk of the ball-pushing unit 1 hitting the pipeline valve due to excessive speed or stagnating due to excessive speed, thereby ensuring the safety and efficiency of the cleaning process.

[0080] The slurry delivery pipeline 7 in the present application is a plurality of branch pipelines connected in sequence. After each section of the pipeline is cleaned, it is ensured to be in a closed state, and then the next section is cleaned in sequence. This method can ensure that the slurry in each branch pipeline is removed as much as possible, thereby improving the cleanliness of the entire pipeline system. In particular, when the ball pusher unit 1 slowly passes through the second on-off valve of a section of the pipeline and completes the cleaning, the second on-off valve is immediately closed, which can effectively prevent the cleaned slurry from re-attaching to the inner wall of the pipeline and causing secondary pollution.

[0081] By adjusting the first pushing ball pressure when the pushing ball unit 1 is in the first preset position X2, the movement speed of the pushing ball unit 1 can be accurately controlled to avoid extended cleaning time due to insufficient pressure or equipment damage due to excessive pressure, so that the entire cleaning process can be accelerated, production downtime is reduced, and the continuity and efficiency of secondary battery slurry production are improved.

[0082] During the cleaning process, the position and movement state of the ball pushing unit 1 are monitored in real time, and the pressure is automatically adjusted according to the monitoring results to form a closed-loop control system. This adjustment method makes the cleaning process more controllable, reduces the uncertainty in the cleaning process, and improves the stability and reliability of the cleaning of the slurry conveying pipeline 7.

[0083] Furthermore, before the step of controlling the driving unit to apply the first ball-pushing pressure to the slurry conveying pipeline 7, the method further comprises:

[0084] Obtaining a first running time when the ball pushing unit 1 moves from an initial position to a first preset position X2;

[0085] The first ball pushing pressure is obtained according to the initial intake pressure and the first running time.

[0086] Specifically, in this embodiment, before controlling the driving unit to apply the first pushing ball pressure to the slurry conveying pipeline 7, it is also necessary to record the first running time of the pushing ball unit 1 when it moves from the initial position X1 to the first preset position X2, so as to calculate the first pushing ball pressure based on the initial intake pressure and the first running time.

[0087] By real-time monitoring of the first running time, the first push ball pressure that adapts to the current pipeline conditions (such as slurry viscosity, degree of dryness, pipeline length, etc.) can be calculated. This dynamic pressure adjustment mechanism makes the cleaning process more precise and can effectively avoid low cleaning efficiency or equipment damage caused by improper pressure setting.

[0088] Based on the calculation of the first running time and the initial air inlet pressure, it can be ensured that the ball pushing unit 1 moves in the pipeline at the most suitable speed, which can not only improve the cleaning efficiency, but also reduce the slurry waste and equipment failure caused by too fast or too slow.

[0089] The dynamically adjusted first push ball pressure can ensure the consistency of cleaning effects in different batches and different slurry states, avoiding the problem of cleaning effect fluctuations caused by fixed pressure in traditional cleaning methods, and ensuring that the slurry conveying pipeline 7 can meet the predetermined cleaning standards each time it is cleaned.

[0090] Precise pressure regulation not only improves cleaning efficiency, but also reduces compressed air consumption while ensuring cleaning results, thereby reducing energy consumption and reducing production costs.

[0091] To sum up, the method of dynamically adjusting the first push ball pressure by recording and calculating the first operating time in this embodiment not only effectively solves many problems in traditional cleaning technology, but also further improves the cleaning level and cleaning effect of the slurry conveying pipeline 7, and has a significant promoting effect on improving the pipeline cleanliness, production efficiency and cost control in the secondary battery production process.

[0092] Furthermore, before the step of controlling the driving unit to apply the second ball-pushing pressure to the slurry conveying pipeline 7, the method further comprises:

[0093] Obtaining a second running time of the ball pushing unit 1 running from the initial position X1 to the second preset position X3;

[0094] The second ball pushing pressure is obtained according to the first ball pushing pressure and the second operation time.

[0095] Specifically, before controlling the driving unit to apply the second pushing ball pressure to the slurry conveying pipeline 7, it is also necessary to obtain the second running time of the pushing ball unit 1 moving from the initial position X1 to the second preset position X3, so as to calculate the second pushing ball pressure based on the first pushing ball pressure and the second running time.

[0096] By acquiring the second operating time in real time, the movement state of the ball-pushing unit 1 in different sections of the pipeline can be accurately evaluated, and the most suitable second ball-pushing pressure can be calculated based on this information. The local characteristics of the pipeline (such as changes in slurry viscosity, bending of the pipeline, etc.) can be optimized to ensure the best cleaning effect of the ball-pushing unit 1 in each section of the pipeline.

[0097] The accurate calculation of the second ball-pushing pressure helps the ball-pushing unit 1 to move in the most economical way, avoiding excessive squeezing and waste of slurry due to excessive pressure, and also reducing the problem of incomplete cleaning due to insufficient pressure.

[0098] Under different batches and slurry state conditions, the dynamically calculated second push ball pressure can ensure that the cleaning effect on the slurry conveying pipeline 7 remains consistent.

[0099] To sum up, in this embodiment, by monitoring the second operating time and calculating the second push ball pressure, the cleaning method of the slurry conveying pipeline 7 has achieved significant improvements in pressure control, cleaning efficiency, slurry utilization, consistency of cleaning effect, production safety and environmentally friendly production.

[0100] Further, the step of obtaining a first ball pushing pressure according to the initial intake pressure and the first running time includes:

[0101] Substitute the initial intake pressure and the first running time into the first formula to obtain the first ball pushing pressure;

[0102] Among them, the first formula is as follows:

[0103] ;

[0104] Where: P 1 is the first push ball pressure, in units of ;

[0105] P 0 is the initial intake pressure, in units of ;

[0106] T 1 The time taken for the ball pushing unit 1 to move to the first preset position X2, in minutes;

[0107] T 0 is the departure time of the ball-pushing unit 1 at the initial position X1, in min;

[0108] T P1 is the first time coefficient, ;

[0109] Among them, the first running time is T 1 With T 0 The time difference between .

[0110] Specifically, by obtaining the values ​​of each parameter in the first formula, the first ball pushing pressure can be calculated. Since the first time coefficient is between 1 min and 3 min, the calculated first ball pushing pressure is also within a certain range.

[0111] By limiting the first time coefficient to between 1 minute and 3 minutes, it can be ensured that the calculated first ball-pushing pressure is within an appropriate range, thereby avoiding equipment damage or incomplete cleaning problems that may be caused by excessively high or low pressure.

[0112] Under different slurry viscosities and pipeline conditions (such as length and bending degree), the calculation result of the first push ball pressure will fall within a reasonable range, which enhances the adaptability of the cleaning method. Even if the slurry state and pipeline environment change, the pressure value can be adjusted to cope with it, reducing the risk of cleaning failure or inefficiency. Compared with fixed pressure cleaning, this method can significantly reduce the use of compressed air, reduce production costs, and reduce the impact on the environment.

[0113] Further, the step of obtaining the second ball pushing pressure according to the first ball pushing pressure and the second running time includes:

[0114] Substitute the first ball pushing pressure and the second running time into the second formula to obtain the second ball pushing pressure;

[0115] Among them, the second formula is as follows:

[0116] ;

[0117] Where: P 2 is the second push ball pressure, in units of ,

[0118] P 1 is the first push ball pressure, in units of ;

[0119] T 2 is the time for the ball pushing unit 1 to move from the initial position X1 to the second preset position X3, in min;

[0120] T 1 is the time for the ball pushing unit 1 to move from the initial position X1 to the first preset position X2, in min;

[0121] T P2 is the second time coefficient, ;

[0122] Among them, the second running time is T 2 With T 1 The time difference between .

[0123] Specifically, by obtaining the values ​​of each parameter in the second formula, the second ball pushing pressure can be calculated. Since the second time coefficient is between 1 min and 3 min, the calculated second ball pushing pressure is also within a certain range.

[0124] The calculation of the second ball-pushing pressure is based on the actual operation time of the ball-pushing unit 1 in the pipeline and the preset second time coefficient, which ensures the accuracy of pressure adjustment. Since the second time coefficient is controlled within 1min to 3min, the calculated second ball-pushing pressure can be maintained within an appropriate range, effectively avoiding the problem of equipment damage caused by excessively high pressure or poor cleaning effect caused by too low pressure, thereby significantly improving the cleaning efficiency.

[0125] Now, an example is given for the magnitude of the first ball pushing pressure and the second ball pushing pressure. In the following content, there is no specific corresponding relationship between the time and the first time coefficient of the ball pushing unit 1 moving from the initial position X1 to the first preset position X2, and the time and the second time coefficient of the ball pushing unit 1 moving from the first preset position X2 to the second preset position X3. It is only for the convenience of understanding and is not limited in any way.

[0126] Embodiment 1

[0127] Under normal circumstances (the residual secondary battery slurry in the slurry conveying pipe 7 is in a moderate state), the time range for the ball-pushing unit 1 to move from the initial position X1 to the first preset position X2 is [3min-5min], the value range of the first time coefficient is [1min-1.5min], the time range for the ball-pushing unit 1 to move from the first preset position X2 to the second preset position X3 is [6min-8min], and the value range of the second time coefficient is [1min-1.5min];

[0128] The time for the ball-pushing unit 1 to move from the initial position X1 to the first preset position X2 is set to 3 minutes. At this time, the value of the first time coefficient is 1 minute. The initial intake pressure is set to 200 Kpa. Then, the first ball-pushing pressure is , when the ball-pushing unit 1 moves to the first preset position X2, a pressure of 600Kpa is delivered to the ball-pushing unit 1 to push the ball-pushing unit 1 from the first preset position X2 to the second preset position X3; the time for the ball-pushing unit 1 to move from the first preset position X2 to the second preset position X3 is set to 6 minutes, and the second time coefficient is 1 minute, then the second ball-pushing pressure is , when the ball pushing unit 1 moves from the first preset position X2 to the second preset position X3, a pressure of 3600 Kpa is delivered to the ball pushing unit 1 to push the ball pushing unit 1 from the second preset position X3 to the third preset position X4;

[0129] Alternatively, the time for the ball pushing unit 1 to move from the initial position X1 to the first preset position X2 is 5 minutes. At this time, the value of the first time coefficient is set to 1.5 minutes, and the initial intake pressure is set to 200 Kpa. Then, the first ball pushing pressure is , when the ball-pushing unit 1 moves to the first preset position X2, a pressure of 666.67 Kpa is delivered to the ball-pushing unit 1 to push the ball-pushing unit 1 from the first preset position X2 to the second preset position X3. The time for the ball-pushing unit 1 to move from the first preset position X2 to the second preset position X3 is 8 minutes, and the second time coefficient is 1.5 minutes. Then the second ball-pushing pressure is , when the ball pushing unit 1 moves from the first preset position X2 to the second preset position X3, a pressure of 3555.57 Kpa is delivered to the ball pushing unit 1 to push the ball pushing unit 1 from the second preset position X3 to the third preset position X4;

[0130] Alternatively, the time for the ball pushing unit 1 to move from the initial position X1 to the first preset position X2 is 3.5 minutes. At this time, the value of the first time coefficient is set to 1.2 minutes, and the initial intake pressure is set to 200 Kpa. Then, the first ball pushing pressure is , when the ball-pushing unit 1 moves to the first preset position X2, a pressure of 583.33 Kpa is delivered to the ball-pushing unit 1 to push the ball-pushing unit 1 from the first preset position X2 to the second preset position X3. The time for the ball-pushing unit 1 to move from the first preset position X2 to the second preset position X3 is 5.5 min, and the second time coefficient is 1.1 min. Then the second ball-pushing pressure is , when the ball pushing unit 1 moves from the first preset position X2 to the second preset position X3, a pressure of 2916.65 Kpa is delivered to the ball pushing unit 1 to push the ball pushing unit 1 from the second preset position X3 to the third preset position X4;

[0131] Alternatively, the time for the ball pushing unit 1 to move from the initial position X1 to the first preset position X2 is 4.5 minutes. At this time, the value of the first time coefficient is set to 1.4 minutes, and the initial intake pressure is set to 200 Kpa. Then, the first ball pushing pressure is , when the ball pushing unit 1 moves to the first preset position X2, 642.86 Kpa The pressure is used to push the ball-pushing unit 1 from the first preset position X2 to the second preset position X3. The time for the ball-pushing unit 1 to move from the first preset position X2 to the second preset position X3 is 7.5 minutes, and the second time coefficient is 1.3 minutes. Then the second ball-pushing pressure is , when the ball pushing unit 1 moves from the first preset position X2 to the second preset position X3, a pressure of 3708.81 Kpa is delivered to the ball pushing unit 1 to push the ball pushing unit 1 from the second preset position X3 to the third preset position X4.

[0132] Embodiment 2

[0133] When the residual secondary battery slurry in the slurry delivery pipe 7 is set to be in a small amount, the time range for the ball-pushing unit 1 to move from the initial position X1 to the first preset position X2 is [1min-2.8min], the value range of the first time coefficient is [1.5min-2min], the time range for the ball-pushing unit 1 to move from the first preset position X2 to the second preset position X3 is [1min-5min], and the value range of the second time coefficient is [1.6min-2min];

[0134] The time for the ball-pushing unit 1 to move from the initial position X1 to the first preset position X2 is set to 1 min. At this time, the value of the first time coefficient is 1.5 min. The initial intake pressure is set to 200 Kpa. Then, the first ball-pushing pressure is , when the ball-pushing unit 1 moves to the first preset position X2, a pressure of 133.33 Kpa is delivered to the ball-pushing unit 1 to push the ball-pushing unit 1 from the first preset position X2 to the second preset position X3; the time for the ball-pushing unit 1 to move from the first preset position X2 to the second preset position X3 is 1 min, and the second time coefficient is 1.6 min, then the second ball-pushing pressure is , when the ball pushing unit 1 moves from the first preset position X2 to the second preset position X3, a pressure of 83.33 Kpa is delivered to the ball pushing unit 1 to push the ball pushing unit 1 from the second preset position X3 to the third preset position X4;

[0135] Alternatively, when the residual secondary battery slurry in the slurry delivery pipe 7 is in a small amount, the time for the ball-pushing unit 1 to move from the initial position X1 to the first preset position X2 is 2.8 minutes. At this time, the value of the first time coefficient is 2 minutes, and the initial intake pressure is set to 200 KPa. Then, the first ball-pushing pressure is , when the ball-pushing unit 1 moves to the first preset position X2, a pressure of 280 Kpa is delivered to the ball-pushing unit 1 to push the ball-pushing unit 1 from the first preset position X2 to the second preset position X3; the time for the ball-pushing unit 1 to move from the first preset position X2 to the second preset position X3 is set to 5 min, and the second time coefficient is 2 min, then the second ball-pushing pressure is , when the ball pushing unit 1 moves from the first preset position X2 to the second preset position X3, a pressure of 700 Kpa is delivered to the ball pushing unit 1 to push the ball pushing unit 1 from the second preset position X3 to the third preset position X4;

[0136] Alternatively, when the residual secondary battery slurry in the slurry delivery pipe 7 is in a small amount, the time for the ball-pushing unit 1 to move from the initial position X1 to the first preset position X2 is 1.5 minutes. At this time, the value of the first time coefficient is 1.8 minutes. The initial intake pressure is set to 200 KPa, and the first ball-pushing pressure is , when the ball-pushing unit 1 moves to the first preset position X2, a pressure of 166.67 Kpa is delivered to the ball-pushing unit 1 to push the ball-pushing unit 1 from the first preset position X2 to the second preset position X3; the time for the ball-pushing unit 1 to move from the first preset position X2 to the second preset position X3 is set to 3 minutes, and the second time coefficient is 1.7 minutes, then the second ball-pushing pressure is , when the ball pushing unit 1 moves from the first preset position X2 to the second preset position X3, a pressure of 294.12 Kpa is delivered to the ball pushing unit 1 to push the ball pushing unit 1 from the second preset position X3 to the third preset position X4;

[0137] Alternatively, when the residual secondary battery slurry in the slurry delivery pipe 7 is in a small amount, the time for the ball-pushing unit 1 to move from the initial position X1 to the first preset position X2 is 2 minutes. At this time, the value of the first time coefficient is 1.9 minutes, and the initial intake pressure is set to 200 KPa. Then, the first ball-pushing pressure is , when the ball-pushing unit 1 moves to the first preset position X2, a pressure of 210.53 Kpa is delivered to the ball-pushing unit 1 to push the ball-pushing unit 1 from the first preset position X2 to the second preset position X3; the time for the ball-pushing unit 1 to move from the first preset position X2 to the second preset position X3 is set to 4 minutes, and the second time coefficient is 1.8 minutes, then the second ball-pushing pressure is , when the ball pushing unit 1 moves from the first preset position X2 to the second preset position X3, a pressure of 467.85 Kpa is delivered to the ball pushing unit 1 to push the ball pushing unit 1 from the second preset position X3 to the third preset position X4.

[0138] Embodiment 3

[0139] When the residual secondary battery slurry in the slurry conveying pipe 7 is in a large amount, the time range for the ball-pushing unit 1 to move from the initial position X1 to the first preset position X2 is [6min-8min], the value range of the first time coefficient is [6min-8min], the time range for the ball-pushing unit 1 to move from the first preset position X2 to the second preset position X3 is [8.5min-10min], and the value range of the second time coefficient is [2.2min-2.9min];

[0140] The time for the ball-pushing unit 1 to move from the initial position X1 to the first preset position X2 is set to 6 minutes. At this time, the value of the first time coefficient is 2.1 minutes. The initial intake pressure is set to 200 KPa. Then, the first ball-pushing pressure is , when the ball-pushing unit 1 moves to the first preset position X2, a pressure of 571.43 Kpa is delivered to the ball-pushing unit 1 to push the ball-pushing unit 1 from the first preset position X2 to the second preset position X3; the time for the ball-pushing unit 1 to move from the first preset position X2 to the second preset position X3 is set to 8.5 min, and the second time coefficient is 2.2 min, then the second ball-pushing pressure is , when the ball pushing unit 1 moves from the first preset position X2 to the second preset position X3, a pressure of 2207.8 Kpa is delivered to the ball pushing unit 1 to push the ball pushing unit 1 from the second preset position X3 to the third preset position X4;

[0141] Alternatively, when the residual secondary battery slurry in the slurry delivery pipe 7 is in a large amount, the time for the ball-pushing unit 1 to move from the initial position X1 to the first preset position X2 is set to 8 minutes. At this time, the value of the first time coefficient is 3 minutes, and the initial intake pressure is set to 200 KPa. Then, the first ball-pushing pressure is , when the ball-pushing unit 1 moves to the first preset position X2, a pressure of 533.33 Kpa is delivered to the ball-pushing unit 1 to push the ball-pushing unit 1 from the first preset position X2 to the second preset position X3; the time for the ball-pushing unit 1 to move from the first preset position X2 to the second preset position X3 is set to 10 min, and the second time coefficient is 2.9 min, then the second ball-pushing pressure is , when the ball pushing unit 1 moves from the first preset position X2 to the second preset position X3, a pressure of 1839.07 Kpa is delivered to the ball pushing unit 1 to push the ball pushing unit 1 from the second preset position X3 to the third preset position X4;

[0142] Alternatively, when the residual secondary battery slurry in the slurry delivery pipe 7 is in a large amount, the time for the ball-pushing unit 1 to move from the initial position X1 to the first preset position X2 is set to 7 minutes. At this time, the value of the first time coefficient is 2.5 minutes, and the initial intake pressure is set to 200 KPa. Then, the first ball-pushing pressure is , when the ball-pushing unit 1 moves to the first preset position X2, a pressure of 560 Kpa is delivered to the ball-pushing unit 1 to push the ball-pushing unit 1 from the first preset position X2 to the second preset position X3; the time for the ball-pushing unit 1 to move from the first preset position X2 to the second preset position X3 is set to 8.9 min, and the second time coefficient is 2.6 min, then the second ball-pushing pressure is , when the ball pushing unit 1 moves from the first preset position X2 to the second preset position X3, a pressure of 1916.92 Kpa is delivered to the ball pushing unit 1 to push the ball pushing unit 1 from the second preset position X3 to the third preset position X4;

[0143] Alternatively, when the residual secondary battery slurry in the slurry delivery pipe 7 is in a large amount, the time for the ball-pushing unit 1 to move from the initial position X1 to the first preset position X2 is set to 7.5 minutes. At this time, the value of the first time coefficient is 2.7 minutes. The initial intake pressure is set to 200 KPa, and the first ball-pushing pressure is , when the ball-pushing unit 1 moves to the first preset position X2, a pressure of 555.56 Kpa is delivered to the ball-pushing unit 1 to push the ball-pushing unit 1 from the first preset position X2 to the second preset position X3; the time for the ball-pushing unit 1 to move from the first preset position X2 to the second preset position X3 is set to 9.5 min, and the second time coefficient is 2.8 min, then the second ball-pushing pressure is , when the ball pushing unit 1 moves from the first preset position X2 to the second preset position X3, a pressure of 1884.94 Kpa is delivered to the ball pushing unit 1 to push the ball pushing unit 1 from the second preset position X3 to the third preset position X4.

[0144] Furthermore, a first on-off valve is provided at the inlet end of each branch pipeline, and a second on-off valve is provided at the outlet end of each branch pipeline. The cleaning method further comprises:

[0145] When it is determined that the ball-pushing unit 1 is at the initial position X1, the first on-off valve of the upper branch pipeline is controlled to be closed, and the second on-off valve is controlled to be opened;

[0146] When it is determined that the ball pushing unit 1 is in the third preset position X4, the second on-off valve in the previous branch pipe is controlled to be closed, and the first on-off valve in the next branch pipe adjacent thereto is controlled to be opened, so that the ball pushing unit 1 enters from the previous branch pipe into the next branch pipe adjacent thereto.

[0147] Specifically, in this embodiment, before the slurry conveying pipeline 7 is cleaned, the first on-off valves at the inlet ends of all branch pipelines are in a closed state, and the second on-off valves at the outlet ends are also in a closed state.

[0148] First, open the second on-off valve of the frontmost branch pipe, while keeping its first on-off valve closed, to ensure that the ball-pushing unit 1 can enter the pipe from the beginning but will not flow back;

[0149] When it is determined that the ball-pushing unit 1 is at the initial position X1, i.e., the entrance of the frontmost branch pipe, the driving unit is controlled to push the ball-pushing unit 1 into the slurry conveying pipe 7 with the preset first air intake pressure. During the movement of the ball-pushing unit 1, the position of the ball-pushing unit 1 is monitored to ensure that it moves in an orderly manner along the preset path. When the ball-pushing unit 1 reaches the first preset position X2, the first ball-pushing pressure is calculated and adjusted according to the initial air intake pressure and the first running time to optimize the cleaning effect. When it is determined that the ball-pushing unit 1 reaches the third preset position X4, i.e., the end of the current branch pipe, the driving unit is controlled to continue to push the ball-pushing unit 1, and at the same time close the second on-off valve of the current branch pipe to prevent the slurry from flowing back. Subsequently, the first on-off valve of the next branch pipe adjacent to the current branch pipe is opened to provide a passage for the ball-pushing unit 1 to enter the next branch pipe, and at the same time keep the second on-off valve of the next branch pipe closed to form a closed cleaning section. After the current branch pipe is cleaned, the ball-pushing unit 1 automatically enters the next branch pipe and repeats the above cleaning process. This cycle continues until all branch pipes are cleaned.

[0150] Each branch pipeline is cleaned independently, and the pressure can be adjusted in real time according to the position of the ball pusher unit 1, ensuring the best cleaning effect under different pipeline and slurry conditions, avoiding incomplete cleaning or equipment damage; through precise valve control and segmented cleaning, the downtime during the cleaning process is reduced, and the production continuity and efficiency of the entire slurry conveying system are improved.

[0151] The slurry conveying pipeline cleaning method in this embodiment realizes efficient and accurate cleaning of the slurry conveying pipeline 7 by controlling the valve state and dynamically adjusting the push ball pressure. This method not only significantly improves the cleaning efficiency and slurry quality, but also reduces production downtime, improves equipment reliability and safety, and promotes resource conservation and environmental protection of the production process.

[0152] Furthermore, the cleaning method further comprises: a display device, the display device being used to display the real-time position of the ball pushing unit 1 in the slurry conveying pipeline 7 .

[0153] The display device updates the position of the ball-pushing unit 1 in the slurry conveying pipeline 7 in real time, so that the operator can promptly understand the cleaning progress and monitor whether the ball-pushing unit 1 encounters obstacles or deviates from the predetermined path, which significantly improves the safety of the cleaning process and avoids pipeline blockage or pressure abnormality caused by stagnation of the ball-pushing unit 1. It also improves the cleaning efficiency and reduces unnecessary waiting time.

[0154] By displaying the real-time location information of the equipment, once the ball pusher unit 1 operates abnormally, the operator can quickly locate the pipeline section where the problem occurs and take timely countermeasures, such as adjusting the pressure or manual intervention, to avoid long equipment downtime and reduce production delays and cost losses.

[0155] Further, the cleaning method is based on the following slurry conveying pipeline cleaning device, the cleaning device comprising: at least two ball pushing units 1, the two ball pushing units 1 are connected by a connecting piece 2; wherein each ball pushing unit 1 comprises: a ball pushing body 3, and scraping parts 4 are respectively provided at both ends of the ball pushing body 3, and the outer edge of the scraping part 4 contacts the inner wall surface of the slurry conveying pipeline 7, so as to scrape off the slurry in the slurry conveying pipeline 7 to avoid adhesion under the drive of the driving unit; wherein, before obtaining the ball-pushing time and the initial air intake pressure of the ball pushing unit 1, the cleaning method further comprises:

[0156] At least two ball pushing units 1 are connected by a connecting member 2;

[0157] A scraper component 4 is installed on each ball pushing unit 1, and at least two ball pushing units 1 installed with the scraper components 4 are placed in the slurry conveying pipeline 7;

[0158] The driving unit is used to push the ball pushing unit 1 to move in the slurry conveying pipeline 7 .

[0159] The cleaning device comprises at least two ball pushing units 1, and the two ball pushing units 1 are connected by a connecting member 2. Figures 1 to 7 As shown, the connecting member 2 in this embodiment can be a connecting rod, and each ball pushing unit 1 includes a ball pushing body 3. The ball pushing body 3 in this embodiment is cylindrical, and scraping components 4 are respectively provided at both ends of the ball pushing body 3. The outer edge of the scraping component 4 is in contact with the inner wall surface of the slurry conveying pipe 7. When the driving unit delivers compressed gas into the slurry conveying pipe 7, the compressed gas will push the ball pushing unit 1 to move. In the process of the ball pushing unit 1 moving in the slurry conveying pipe 7, the outer edge of the scraping component 4 is always in contact with the inner wall of the slurry conveying pipe 7 to scrape off the slurry of the secondary battery on the inner wall of the slurry conveying pipe 7, and move simultaneously with the movement of the ball pushing unit 1.

[0160] The provision of the scraper component 4 ensures that the ball-pushing unit 1 can effectively contact and scrape off the slurry residues attached to the inner wall of the slurry conveying pipeline 7 during its movement in the pipeline, thereby avoiding pipeline blockage and degradation of slurry quality caused by slurry residues in traditional cleaning methods. The scraper component 4 in this embodiment is a rubber diaphragm. The presence of the scraper component 4 enables the ball-pushing unit 1 to maintain a good sealing effect even in a complex environment, reducing the leakage of compressed gas caused by damage to the internal diaphragm, thereby reducing the failure rate of the ball-pushing unit 1 and significantly improving the cleaning efficiency.

[0161] The two ball-pushing units 1 are connected by a connector 2 and can work together in the slurry conveying pipeline 7. The first ball-pushing unit 1 scrapes off the slurry, and the second ball-pushing unit 1 further cleans it, ensuring that the slurry inside the pipeline is completely emptied as much as possible, reducing slurry waste and drying time after pipeline cleaning, and improving production continuity and capacity.

[0162] The cylindrical design of the ball pusher body 3 and the configuration of the scraper components 4 at both ends enable the ball pusher unit 1 to contact the inner wall of the pipe evenly and comprehensively, avoiding the problem of incomplete local cleaning that may exist in traditional cleaning methods, ensuring the consistent cleanliness of the inner wall of the entire pipe, and improving the reliability of the subsequent battery slurry quality.

[0163] The design of continuous contact between the scraper component 4 and the inner wall of the pipeline can effectively prevent the impact force generated by the high-speed movement of the ball pushing unit 1 in the pipeline from damaging the ball pushing unit 1 itself or the inner wall of the pipeline.

[0164] By setting the connecting piece 2, the two ball-pushing units 1 can move in coordination, and a relatively stable thrust can be maintained even in the bends or diameter-changing sections of the pipeline, thereby avoiding the problems of discontinuous movement of the ball-pushing unit 1 or incomplete slurry cleaning due to pressure fluctuations, and improving the stability and reliability of the cleaning process.

[0165] In summary, the slurry conveying pipeline 7 cleaning device in this embodiment, through the coordinated movement of the double push ball units 1 and the efficient scraping mechanism of the scraper component 4, significantly improves the efficiency, effect and durability of pipeline cleaning, reduces slurry waste and pipeline maintenance costs, and has a positive impact on the production process optimization and cost control of secondary batteries.

[0166] Further, the push ball body 3 includes: a push ball housing 301, the push ball housing 301 has an adsorption space, and there is an adsorption gap between at least part of the outer wall surface of the push ball housing 301 and the inner wall surface of the slurry conveying pipeline 7; an adsorption component 302, the adsorption component 302 is arranged in the adsorption space to adsorb metal particles on the inner wall surface of the slurry conveying pipeline 7 to the outer wall surface of the push ball housing 301 through the adsorption gap; wherein, after the step of pushing the push ball unit 1 to move in the slurry conveying pipeline 7, the cleaning method further includes:

[0167] An adsorption space is provided in the push ball housing 301, so that the adsorption component 302 is arranged in the adsorption space;

[0168] An annular groove is provided on the outer wall surface of the ball pushing housing 301 to form an adsorption gap.

[0169] Specifically, the ball pusher body 3 includes a ball pusher housing 301. Figure 3As shown, there is an adsorption space in the push ball housing 301, and an annular groove is opened on at least part of the outer wall surface of the push ball housing 301, and an adsorption gap is formed between the outer wall surface of the annular groove and the inner wall surface of the slurry conveying pipe 7. An adsorption component 302 is provided in the adsorption space. The adsorption component 302 is a magnetic rod in this embodiment. The magnetic rod can be used to adsorb metal particles on the inner wall surface of the slurry conveying pipe 7 onto the outer wall surface of the push ball housing 301 in the adsorption space through the adsorption component 302.

[0170] The magnetic rod inside the push ball housing 301 can effectively absorb metal particles on the inner wall of the slurry conveying pipeline 7, including tiny iron powder and other magnetic foreign matter, which can significantly improve the cleanliness of the pipeline and achieve the purpose of iron removal.

[0171] By opening an annular groove on the outer wall of the push ball housing 301, a tiny adsorption gap is formed with the inner wall of the pipe, rather than direct contact cleaning. This non-contact cleaning method reduces the wear of the inner wall of the pipe by the push ball unit 1 during movement, extends the service life of the slurry conveying pipe 7, and reduces the frequency and cost of pipe maintenance and replacement.

[0172] The design of the two ball-pushing units 1 of the present application eliminates the need for secondary pipe cleaning and can complete the removal of slurry residues and the adsorption of metal particles in one go, thereby simplifying the cleaning process, avoiding additional cleaning steps and time consumption, effectively reducing production capacity losses caused by pipeline cleaning, and improving production continuity and economic benefits.

[0173] Furthermore, the cleaning method also includes:

[0174] Adjust the adsorption gap so that the adsorption gap is less than or equal to 8 mm; and / or,

[0175] The adsorption strength of the adsorption component 302 is greater than or equal to 12000 GS; and / or,

[0176] A flexible material is installed on at least a portion of the outer wall of the ball push housing 301 .

[0177] Specifically, the distance between the outer wall surface of the annular groove and the inner wall surface of the slurry delivery pipe 7 is less than 8 mm;

[0178] The adsorption strength of the adsorption component 302 is greater than or equal to 12000GS;

[0179] A flexible material is installed on at least a portion of the outer wall of the ball push housing 301 .

[0180] The magnetic rod used in this embodiment has a moderate magnetic strength (such as 12000GS), which can ensure the adsorption effect while avoiding unnecessary impact on non-magnetic materials or pipeline structures. The gap between the magnetic rod and the inner wall of the pipeline is limited to ≤8mm, ensuring sufficient adsorption efficiency and contact area, and achieving efficient and accurate adsorption.

[0181] The outside of the ball-pushing housing 301 is provided with a flexible material, so as to prevent the ball-pushing unit 1 from being damaged by adsorbed metal particles during the cleaning process.

[0182] The ball pusher housing 301 also includes a ball pusher frame 3011, the inner wall surface of the ball pusher frame 3011 is made of metal, mounting housings 3012 are provided at both ends of the ball pusher frame 3011, an annular mounting groove is provided on the mounting housing 3012, and the scraper component 4 is provided in the annular mounting groove, and the scraper component 4 includes a scraper body 401 and a scraper ring 402 provided on the outer peripheral surface of the scraper body 401, the diameter of the scraper ring 402 is a first diameter, the diameter of the scraper body 401 is a second diameter, and the difference between the first diameter and the second diameter is The scraper body 401 has a thickness of 1 mm to 3 mm along the extension direction of the connecting member 2, and the scraper ring 402 includes a first scraper portion 4021 and a second scraper portion 4022. The distance between the first scraper portion 4021 and the second scraper portion 4022 along the extension direction of the axis of the scraper ring 402 gradually decreases from the direction away from the scraper body 401. The first scraper portion 4021 and the second scraper portion 4022 are both inclined, and one end away from the scraper body 401 intersects and abuts against the inner wall surface of the slurry conveying pipe 7. Figure 5 As shown, the distance between the first scraper portion 4021 and the second scraper portion 4022 gradually decreases in the vertical upward direction and converges to a point, abutting against the inner wall surface of the slurry conveying pipe 7.

[0183] The ball pushing unit 1 also includes connecting components 5 arranged at both ends of the ball pushing unit 1. Figure 4 As shown, the connecting component 5 includes at least two connecting holes 501, the connecting member 2 includes a connecting rod, and hooks arranged at both ends of the connecting rod, the free end of the hook is inserted into one of the two connecting holes 501, and comes out from the other connecting hole 501, and is connected to the connecting rod, similar to the shape of a hook. In this way, two ball pushing units 1 can be connected together, wherein the diameter of the connecting rod is 1 cm to 3 cm, and the material of the hook can be a steel wire rope.

[0184] The ball pushing skeleton 3011 is made of metal, which significantly enhances the overall structural strength of the ball pushing unit 1 and improves its durability in the slurry conveying pipeline 7. Even if it operates in a high-pressure environment for a long time, it can maintain good stability and reliability. The combination of the metal inner wall surface and the magnetic rod optimizes the magnetic adsorption path, improves the adsorption efficiency of metal particles, and ensures the cleanliness of the inner wall of the pipeline.

[0185] The small difference design (1mm-3mm) between the diameter of the scraper ring 402 and the diameter of the scraper body 401 ensures that the scraper ring 402 is in close contact with the inner wall of the pipe, improves the scraping efficiency, can remove the slurry attached to the inner wall of the pipe as much as possible, and reduces residues.

[0186] The scraper ring 402 is tilted, and the first scraper portion 4021 and the second scraper portion 4022 intersect and abut the inner wall of the pipe at the end away from the scraper body 401. This design reduces damage to the inner wall of the pipe during scraping, while improving the sealing between the ball pushing unit 1 and the inner wall of the pipe, reducing the leakage of compressed gas.

[0187] The two ball-pushing units 1 are connected by at least two connection holes 501 and a hook portion made of a steel wire rope. This connection method not only ensures the strength of the connection, but also maintains the flexibility between the ball-pushing units, so that they can smoothly pass through the curved and variable diameter parts of the pipeline.

[0188] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0189] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0190] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0191] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0192] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0193] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A slurry conveying pipeline cleaning method, used for a slurry conveying pipeline cleaning device, the slurry conveying pipeline cleaning device comprising a ball pushing unit (1) and a driving unit, the driving unit being used to drive the ball pushing unit (1) to enter the slurry conveying pipeline (7) to clean the residual secondary battery slurry in the slurry conveying pipeline (7), the slurry conveying pipeline (7) comprising a plurality of branch pipelines connected in sequence, characterized in that: The cleaning method includes a branch pipeline cleaning method for cleaning each branch pipeline, and the branch pipeline cleaning method includes: Obtaining the initial air intake pressure of the ball pushing unit (1); Controlling the driving unit to apply the initial air intake pressure to the slurry conveying pipeline (7) so as to push the ball pushing unit (1) to move from an initial position (X1) in the slurry conveying pipeline (7); Obtaining a first running time when the ball pushing unit (1) moves from the initial position (X1) to the first preset position (X2); Obtaining a first ball-pushing pressure according to the initial intake pressure and the first running time; When it is determined that the ball-pushing unit (1) is at the first preset position (X2), controlling the driving unit to apply the first ball-pushing pressure into the slurry conveying pipeline (7) to push the ball-pushing unit (1) to continue moving; Obtaining a second running time of the ball pushing unit (1) running from the initial position (X1) to the second preset position (X3); obtaining a second ball pushing pressure according to the first ball pushing pressure and the second running time; When it is determined that the ball-pushing unit (1) is in the second preset position (X3), controlling the driving unit to apply the second ball-pushing pressure into the slurry conveying pipeline (7) to push the ball-pushing unit (1) to continue moving; When it is determined that the ball pushing unit (1) is at the third preset position (X4), the residual secondary battery slurry in the branch pipe of the first section is cleaned; The branch pipeline cleaning method is executed cyclically to clean a plurality of branch pipelines in sequence, and the first ball pushing pressure and the second ball pushing pressure are both the pressures of compressed gas delivered by the driving unit to the slurry delivery pipeline (7).

2. The slurry conveying pipeline cleaning method according to claim 1, characterized in that: The step of obtaining the first ball pushing pressure according to the initial intake pressure and the first running time includes: Substituting the initial intake pressure and the first running time into a first formula to obtain the first ball pushing pressure; Wherein, the first formula is as follows: ； Where: P1 is the first push ball pressure, unit is , P0 is the initial intake pressure, in units of ; T1 is the time taken for the ball pushing unit (1) to move to the first preset position (X2), in minutes; T0 is the departure time of the ball pushing unit (1) at the initial position (X1), in minutes; T P1 is the first time coefficient, ; The first running time is the time difference between T1 and T0.

3. The slurry conveying pipeline cleaning method according to claim 1, characterized in that: The step of obtaining the second ball pushing pressure according to the first ball pushing pressure and the second running time includes: Substituting the first ball pushing pressure and the second running time into a second formula, the second ball pushing pressure is obtained; The second formula is as follows: ; Where: P2 is the second ball pushing pressure; the unit is , P1 is the first push ball pressure, unit is ; T2 is the time taken for the ball pushing unit (1) to move from the initial position (X1) to the second preset position (X3), in minutes; T1 is the time taken for the ball pushing unit (1) to move from the initial position (X1) to the first preset position (X2), in minutes; T P2 is the second time coefficient, ; The second running time is the time difference between T2 and T1.

4. The slurry conveying pipeline cleaning method according to claim 1, characterized in that: A first on-off valve is provided at the inlet end of each branch pipeline, and a second on-off valve is provided at the outlet end of each branch pipeline. The cleaning method further comprises: When it is determined that the ball pushing unit (1) is in the initial position (X1), the first on-off valve of the previous branch pipe is controlled to be closed and the second on-off valve is controlled to be opened; When it is determined that the ball pushing unit (1) is in the third preset position (X4), the second on-off valve in the previous branch pipe is controlled to be closed, and the first on-off valve in the next branch pipe adjacent thereto is controlled to be opened, so that the ball pushing unit (1) enters from the previous branch pipe into the next branch pipe adjacent thereto.

5. The slurry conveying pipeline cleaning method according to claim 1, characterized in that: The cleaning method further comprises: A display device, the display device is used to display the real-time position of the ball pushing unit (1) in the slurry conveying pipeline (7).

6. The slurry conveying pipeline cleaning method according to claim 1, characterized in that: The cleaning method is based on the following slurry conveying pipeline cleaning device, the cleaning device comprising: at least two ball pushing units (1), the two ball pushing units (1) being connected via a connecting piece (2); wherein each of the ball pushing units (1) comprises: a ball pushing body (3), the two ends of the ball pushing body (3) being provided with scraping components (4), the outer edges of the scraping components (4) being in contact with the inner wall surface of the slurry conveying pipeline (7), so as to scrape off the slurry in the slurry conveying pipeline (7) to avoid adhesion under the drive of the driving unit; wherein before the step of obtaining the ball launch time and the initial air intake pressure of the ball pushing unit (1), the cleaning method further comprises: Using the connecting piece (2) to connect the at least two ball pushing units (1); The scraper component (4) is installed on each of the ball pushing units (1), and the at least two ball pushing units (1) installed with the scraper components (4) are placed in the slurry conveying pipeline (7); The driving unit is used to push the ball pushing unit (1) to move in the slurry conveying pipeline (7).

7. The slurry conveying pipeline cleaning method according to claim 6, characterized in that: The push ball body (3) comprises: a push ball shell (301), wherein the push ball shell (301) has an adsorption space, and an adsorption gap is formed between at least a portion of the outer wall surface of the push ball shell (301) and the inner wall surface of the slurry conveying pipeline (7); an adsorption component (302), wherein the adsorption component (302) is arranged in the adsorption space to adsorb metal particles on the inner wall surface of the slurry conveying pipeline (7) to the outer wall surface of the push ball shell (301) through the adsorption gap; wherein, after the step of pushing the push ball unit (1) to move in the slurry conveying pipeline (7), the cleaning method further comprises: An adsorption space is provided in the push ball housing (301), so that the adsorption component (302) is arranged in the adsorption space; An annular groove is provided on the outer wall surface of the ball pushing housing (301) to form the adsorption gap.

8. The slurry conveying pipeline cleaning method according to claim 7, characterized in that: The cleaning method further comprises: Adjusting the adsorption gap so that the adsorption gap is less than or equal to 8 mm; and / or, The adsorption strength of the adsorption component (302) is greater than or equal to 12000 GS; and / or, A flexible material is installed on at least a portion of the outer wall of the ball pushing housing (301).

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