A cylinder liner and a method for controlling production thereof

Abstract

The present application relates to the field of lining production control, in particular to a kind of cylinder lining and its production control method.The method first according to the difference between historical formula and current formula performance data, similar historical formula of current formula is screened out, raw material appearing in all similar historical formula is used as reference raw material, according to the difference of the use amount of target reference raw material in current formula and similar historical formula, the number of similar historical formula containing target reference raw material and the sequence number of target reference raw material in similar historical formula, the priority of target reference raw material is obtained, based on the priority, the raw material of current formula is put into mixing and stirring equipment, and in the process of putting, the effect of raw material mixing is analyzed in real time, and the putting time of current formula raw material and the stirring speed of equipment are controlled, to obtain the final mixed raw material, based on the final mixed raw material, cylinder lining is produced.The present application can improve the production quality of cylinder lining.

Description

Technical Field

[0001] This invention relates to the field of liner production control, specifically to a cylindrical liner and its production control method. Background Technology

[0002] Cylindrical liners are wear-resistant components installed on the inner wall of industrial rotating equipment (such as ball mills, mixers, and rotary kilns) to protect the cylinder and reduce the degree of impact, wear, and corrosion from materials, thereby extending the service life of the equipment. Existing cylindrical liners have different production processes depending on the material. For example, metal liners are mainly obtained through casting, rubber liners are mainly obtained through molding, and special multifunctional liners are mainly obtained through in-situ copolymerization. Among them, special multifunctional liners, due to their special production process, add friction reducers, hydrophobic active materials, and other raw materials during the production process, giving them advantages such as strong wear resistance, low adhesion, and low coefficient of friction.

[0003] For special multifunctional liners, the relevant technologies typically involve adding various raw materials (such as friction reducers, hydrophobic active materials, etc.) into a mixing and stirring device for thorough mixing, followed by in-situ copolymerization of the mixed raw materials to produce high-performance cylindrical liners. However, in the production of special multifunctional liners, multiple raw materials usually need to be mixed to ensure their performance. The order and timing of adding these raw materials have a significant impact on the mixing and reaction processes, thus affecting the quality of the finished product. As a result, existing methods cannot effectively control the order and timing of adding various raw materials during the production of cylindrical liners, thereby reducing the production quality of the cylindrical liners. Summary of the Invention

[0004] To address the technical problem that existing methods cannot effectively control the order and timing of raw material input during the production of cylindrical liners, thus reducing the production quality of cylindrical liners, the present invention aims to provide a cylindrical liner and its production control method. The specific technical solution adopted is as follows:

[0005] This invention proposes a method for controlling the production of cylindrical liners, the method comprising:

[0006] Obtain the order number of each raw material added in each historical formula for producing cylindrical liners, as well as various performance data of each historical formula. At the same time, obtain the raw materials and various performance data in the current formula for producing cylindrical liners.

[0007] Based on the differences in the same performance data between each historical formula and the current formula, similar historical formulas to the current formula are selected from all historical formulas. The raw materials appearing in all similar historical formulas are used as reference raw materials, and any one of the reference raw materials is used as the target reference raw material. The deployment priority of the target reference raw material is obtained based on the difference in the usage of the target reference raw material in the current formula and similar historical formulas, the number of similar historical formulas containing the target reference raw material, and the deployment sequence number of the target reference raw material in the similar historical formulas.

[0008] Based on the aforementioned feeding priority, the raw materials included in the current formula are fed into the mixing equipment. During the feeding process, particle size distribution data and torque data in the mixing equipment are acquired in real time. Based on the particle size distribution data at the current moment and the temporal changes of the torque data in the preset time period before the current moment, the raw material mixing effect value at the current moment is obtained. Based on the raw material mixing effect value, the timing of feeding the raw materials included in the current formula and the mixing speed of the mixing equipment are controlled to obtain the final mixed raw materials of the current formula.

[0009] A cylindrical liner is produced based on the final mixed raw materials.

[0010] Furthermore, the step of selecting similar historical recipes from all historical recipes for the current recipe includes:

[0011] Take any historical recipe as the target historical recipe, and perform negative correlation normalization on the sum of the absolute values ​​of the differences between all the same performance data between the target historical recipe and the current recipe to obtain the performance similarity between the target historical recipe and the current recipe.

[0012] Historical recipes with performance similarity greater than a preset similarity threshold are used as similar historical recipes for the current recipe.

[0013] Furthermore, the priority for obtaining the target reference raw material includes:

[0014] The average usage of the target reference ingredient in all similar historical formulations is used as the reference usage of the target reference ingredient.

[0015] The number of similar historical formulations containing the target reference ingredient is used as the numerator, the number of similar historical formulations is used as the denominator, and the ratio is used as the usage frequency value of the target reference ingredient.

[0016] The finished product impact coefficient of the target reference ingredient is obtained based on the difference between the usage amount of the target reference ingredient in the current formulation and the reference usage amount of the target reference ingredient, as well as the usage frequency value of the target reference ingredient.

[0017] The initial priority of the target reference ingredient is obtained based on the order number of its placement in each similar historical formulation and the quantity of ingredients contained in each similar historical formulation.

[0018] The product of the finished product influence coefficient and the initial priority is normalized to obtain the priority of the target reference raw material.

[0019] Furthermore, the finished product influence coefficient of the target reference raw material includes:

[0020] The difference between the amount of the target reference ingredient used in the current formulation and the reference amount of the target reference ingredient is taken as the relative value of the amount of the target reference ingredient used.

[0021] The relative value of the usage amount and the usage frequency value of the target reference raw material are combined and normalized to obtain the finished product influence coefficient of the target reference raw material.

[0022] Furthermore, the initial priority for obtaining the target reference material includes:

[0023] The numerator is the quantity of ingredients contained in each similar historical recipe, the denominator is the quantity of reference ingredients, and the ratio is used as the reference weight for each similar historical recipe.

[0024] The product of the release sequence number of the target reference ingredient in each similar historical formulation and the reference weight of each similar historical formulation is used as the priority evaluation value of the target reference ingredient in each similar historical formulation.

[0025] The average priority assessment value of the target reference ingredient across all similar historical formulations is used as the initial priority of the target reference ingredient.

[0026] Furthermore, obtaining the raw material mixing effect value at the current moment includes:

[0027] Any two adjacent moments within a preset time period are taken as a group of adjacent moments, and the absolute value of the difference between the torque data of the two moments in each group of adjacent moments is taken as the torque change of each group of adjacent moments.

[0028] By performing a negative correlation mapping on the average value of the torque changes in all adjacent time groups, the torque change stability at the current time can be obtained.

[0029] The particle size distribution data and torque change stability at the current moment are combined and normalized to obtain the raw material mixing effect value at the current moment.

[0030] Furthermore, the final mixed ingredients for obtaining the current formulation include:

[0031] If the mixing effect value of the raw materials at the current moment is greater than the preset effect threshold, then the next raw material contained in the current formula will be added to the mixing equipment at the current moment.

[0032] If the mixing effect value of the raw materials at the current moment is not greater than the preset effect threshold, then no new raw material is added at the current moment, and the mixing speed of the mixing equipment is adjusted in real time according to the mixing effect value of the raw materials at the current moment to obtain the adjusted mixing speed at the current moment, until all the raw materials contained in the current formula are added to the mixing equipment to obtain the final mixed raw materials of the current formula.

[0033] Furthermore, obtaining the current stirring speed adjustment includes:

[0034] Based on the calculation formula for adjusting the stirring speed, the current adjusting stirring speed is obtained. The calculation formula for adjusting the stirring speed is as follows:

[0035] V ′ =V×(2-U)

[0036] Among them, V ′ V represents the adjusted stirring speed at the current moment; V represents the standard stirring speed of the mixing equipment; U represents the raw material mixing effect value at the current moment.

[0037] Further, the production of the cylindrical liner based on the final mixed raw materials includes:

[0038] The final mixed raw materials are poured into a mold and subjected to in-situ copolymerization to obtain a cylindrical liner.

[0039] The present invention also proposes a cylindrical liner, which is composed of a variety of mixed raw materials and is manufactured by in-situ copolymerization process. The cylindrical liner has the advantages of strong wear resistance and low adhesion.

[0040] The present invention has the following beneficial effects:

[0041] This invention addresses the issue that existing methods cannot effectively control the order and timing of raw material addition during the production of cylindrical liners, thus reducing the quality of the liners. Therefore, it first selects historical formulas with similar performance to the current formula based on the differences in performance data between each historical formula and the current formula. Then, the obtained addition priority is used to reflect the priority of each reference raw material added to the mixing equipment during the production of the cylindrical liner. This avoids poor final mixing results due to improper order of raw material addition in the current formula. Simultaneously, during the addition process, the mixing effect of the raw materials in the mixing equipment is analyzed in real time. Based on the raw material mixing effect value, the timing of adding the reference raw materials included in the current formula and the mixing speed of the mixing equipment are controlled, thereby improving the final mixing effect and ensuring thorough mixing of the raw materials, thus improving the production quality of the cylindrical liners. Attached Figure Description

[0042] To more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a flowchart of a cylindrical liner production control method provided in one embodiment of the present invention. Detailed Implementation

[0044] To further illustrate the technical means and effects adopted by the present invention to achieve its intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of a cylindrical liner and its production control method according to the present invention. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0046] The following description, in conjunction with the accompanying drawings, details a specific scheme for a cylindrical liner and its production control method provided by the present invention.

[0047] Please see Figure 1 The diagram illustrates a flowchart of a cylindrical liner production control method according to an embodiment of the present invention, the method comprising:

[0048] Step S1: Obtain the order number of each raw material added in each historical formula for producing cylindrical liners, as well as various performance data of each historical formula. At the same time, obtain the raw materials and various performance data in the current formula for producing cylindrical liners.

[0049] In the existing production process of cylindrical liners (special multi-functional liners), the production formula of the cylindrical liners needs to be adjusted according to specific performance requirements so that the final product has the corresponding properties. For example, by adding different amounts of hydrophobic active materials and friction reducers to the liner material formula, the surface adhesion and friction coefficient of the liner can be reduced to varying degrees, and the wear resistance of the product can be improved, thereby meeting the performance requirements of the cylindrical liners.

[0050] This invention first collects multiple historical formulas from the historical production of cylindrical liners. Each historical formula produces cylindrical liners with different performance requirements. These performance requirements include, for example, Mohs hardness ≥ 9, adhesion amount ≤ 0.02, and coefficient of friction ≤ 0.15. Therefore, each historical formula corresponds to multiple performance data. For example, for a historical formula with performance requirements of Mohs hardness ≥ 9, adhesion amount ≤ 0.02, and coefficient of friction ≤ 0.15, the performance data for this historical formula can be considered as 9, 0.02, and 0.15, respectively. Furthermore, for a given historical formula, it also includes various... The order of addition of raw materials during the mixing process and the amount of each raw material used are specified. The order of addition is used to characterize the order in which the raw materials are added. In one embodiment of the present invention, a non-zero natural number can be used to represent the order of addition. The larger the order of addition of a certain raw material in the historical formula, the more likely that the raw material needs to be added to the mixing equipment for processing in the historical formula. For example, if the order of addition of raw materials A, B and C in a certain historical formula are 1, 2 and 3 respectively, then the order of addition of the raw materials in the mixing process in the historical formula is raw material C, raw material B and raw material A.

[0051] The embodiments of the present invention also require the construction of a production formula in a laboratory environment based on the current performance requirements of cylindrical liner production, so as to obtain a current formula that meets the corresponding performance requirements. The current formula contains multiple raw materials and the amount of each raw material used, and the current formula also has corresponding performance data.

[0052] Meanwhile, embodiments of the present invention also require the installation of a laser particle size analyzer inside the mixing and stirring equipment, for real-time acquisition of particle size information of the mixed raw materials inside the equipment during the subsequent mixing process of various raw materials of the current formula. Embodiments of the present invention also require the installation of a torque sensor on the stirring shaft of the mixing and stirring equipment, for real-time acquisition of torque information of the stirring shaft of the equipment.

[0053] Step S2: Based on the differences in the same performance data between each historical formula and the current formula, filter out similar historical formulas for the current formula from all historical formulas; take the raw materials appearing in all similar historical formulas as reference raw materials, take any one of the reference raw materials as the target reference raw material, and obtain the deployment priority of the target reference raw material based on the difference in the usage of the target reference raw material in the current formula and similar historical formulas, the number of similar historical formulas containing the target reference raw material, and the deployment sequence number of the target reference raw material in similar historical formulas.

[0054] Because different production formulas of special multifunctional liners require different performance characteristics, the types and amounts of raw materials used in different production formulas also vary. First, the liner protrusion design is used to improve the material lifting angle, thereby improving the mixing effect and particle size during the mixing process. Second, the order in which raw materials are added during the mixing process also affects the mixing effect to a certain extent. For example, if high-density raw materials (such as metal powder) are added to the mixing container first, they may sink to the bottom due to gravity, while low-density raw materials (such as polymer particles) float on the surface, resulting in uneven mixing. Therefore, this embodiment of the invention first selects historical formulas with similar performance to the current formula from all historical formulas based on the differences in the same performance data between each historical formula and the current formula. These are called similar historical formulas. Subsequently, the order in which raw materials are added in the current formula can be analyzed by using data such as the order number and amount of raw materials used in the similar historical formulas.

[0055] Preferably, in one embodiment of the present invention, the method for obtaining similar historical formulas of the current formula specifically includes:

[0056] Using any historical recipe as the target historical recipe, the sum of the absolute values ​​of the differences between all the same performance data between the target historical recipe and the current recipe is negatively correlated and normalized, and the calculation result is limited to the range of [0,1], thereby obtaining the performance similarity between the target historical recipe and the current recipe.

[0057] In one embodiment of the present invention, a negative exponential function with the natural constant e as the base can be used to achieve negative correlation normalization.

[0058] As an example, in one embodiment of the present invention, the expression for the performance similarity between the target historical formula and the current formula can be specifically as follows:

[0059]

[0060] Where S represents the performance similarity between the target historical formulation and the current formulation; a i This represents the i-th performance data of the current formula; a i ′Represents the i-th performance data of the target historical formula; I represents the number of identical performance data between the current formula and the target historical formula; exp() represents an exponential function with the natural constant e as the base, used for normalization of negative correlations.

[0061] The same method described above can be used to obtain the performance similarity between each historical formula and the current formula.

[0062] The greater the performance similarity between a historical formula and the current formula, the more similar the performance of the cylindrical liner product corresponding to the historical formula is to the performance required by the current formula. Therefore, a historical formula with a performance similarity greater than a preset similarity threshold can be used as a similar historical formula to the current formula. The preset similarity threshold ranges from (0.5, 1). In one embodiment of the present invention, the preset similarity threshold is set to 0.8. The specific value of the preset similarity threshold can also be set by the implementer according to the specific implementation scenario, and is not limited here.

[0063] Then, this embodiment of the invention needs to count the types of raw materials appearing in all similar historical formulations. Raw materials appearing in all similar historical formulations are used as reference raw materials, and any one of these reference raw materials is used as the target reference raw material. The more the target reference raw material is used in the current formulation compared to its usage in similar historical formulations, and the higher the frequency of its appearance in similar historical formulations, the greater the performance improvement of the cylindrical liner product produced by the current formulation. Simultaneously, the order of addition of the target reference raw material in similar historical formulations reflects the priority of its addition in historical formulations with similar performance. Therefore, the differences in the usage of the target reference raw material in the current formulation and similar historical formulations, the number of similar historical formulations containing the target reference raw material, and the order of addition of the target reference raw material in similar historical formulations can be analyzed. The obtained addition priority reflects the priority of the target reference raw material added to the mixing equipment. Subsequently, based on the addition priority, the raw materials contained in the current formulation can be added to the mixing equipment sequentially, avoiding poor final mixing results due to improper addition order of raw materials in the current formulation.

[0064] Preferably, in one embodiment of the present invention, the method for obtaining the priority of the target reference raw material includes:

[0065] First, the average usage of the target reference ingredient in all similar historical formulations is used as the reference usage of the target reference ingredient. The larger the reference usage, the greater the overall level of the target reference ingredient in similar historical formulations. It should be noted that if a similar historical formulation does not contain the target reference ingredient, the usage of the target reference ingredient in that similar historical formulation is set to 0 for subsequent calculation and analysis.

[0066] The ratio of the number of similar historical formulations containing the target reference ingredient to the number of similar historical formulations is used as the numerator and the number of similar historical formulations as the denominator. The ratio is used as the frequency of use of the target reference ingredient. The higher the frequency of use, the higher the frequency of use of the target reference ingredient in similar historical formulations.

[0067] Based on the difference between the usage amount of the target reference raw material in the current formula and the reference usage amount of the target reference raw material, as well as the usage frequency value of the target reference raw material, the finished product influence coefficient of the target reference raw material is obtained. The larger the finished product influence coefficient, the greater the performance improvement of the cylindrical liner product produced by the current formula by the target reference raw material. Therefore, the target reference raw material should be given priority in the mixing and stirring equipment during subsequent mixing processes.

[0068] Preferably, in one embodiment of the present invention, the method for obtaining the finished product influence coefficient of the target reference raw material specifically includes:

[0069] The difference between the amount of the target reference raw material used in the current formulation and the reference amount of the target reference raw material is taken as the relative value of the amount of the target reference raw material used. The larger the relative value of the amount of the target reference raw material used in the current formulation is, the greater the amount of the target reference raw material used in the current formulation is compared with the overall amount used in similar historical formulations. This indicates that the target reference raw material improves the performance of the cylindrical liner product produced by the current formulation. Similarly, it should be noted that if the current formulation does not contain the target reference raw material, the amount of the target reference raw material used in the current formulation is set to 0.

[0070] After combining and normalizing the relative values ​​of the usage amount and the usage frequency of the target reference raw material, the calculation results are limited to the range of [0,1], thereby obtaining the finished product influence coefficient of the target reference raw material.

[0071] In embodiments of the present invention, the sum or product of the relative value of the usage amount and the usage frequency value of the target reference raw material can be calculated to achieve the integration of the two, which is not limited here. Furthermore, the same method can be used to integrate two or more data in subsequent steps.

[0072] In one embodiment of the present invention, the normalization process can be specifically, for example, maximum and minimum value normalization. Furthermore, the normalization in subsequent steps can all adopt maximum and minimum value normalization. In other embodiments of the present invention, other normalization methods can be selected according to the specific range of values, or activation functions and hyperbolic tangent functions can be used to implement the normalization process. These will not be elaborated or limited further.

[0073] As an example, in one embodiment of the present invention, the expression for the finished product influence coefficient of the target reference raw material can be specifically as follows:

[0074]

[0075] Where D represents the finished product impact coefficient of the target reference raw material; d represents the amount of the target reference raw material used in the current formulation; d n This indicates the amount of the target reference ingredient used in the nth similar historical formulation; This indicates the reference usage of the target reference raw material; N represents the number of similar historical formulations. This represents the relative amount of the target reference ingredient used; K represents the number of similar historical formulations that include the target reference ingredient. This represents the usage frequency value of the target reference material; norm() represents the normalization function used for normalization processing.

[0076] Then, since the higher the order number of the target reference raw material in a similar historical formulation, the higher the priority of the target reference raw material in that similar historical formulation should be added to the mixing equipment, and the more raw materials contained in that similar historical formulation, the higher the priority of the target reference raw material compared to many other raw materials, the initial priority of the target reference raw material can be obtained according to the order number of the target reference raw material in each similar historical formulation and the number of raw materials contained in each similar historical formulation. The higher the initial priority, the higher the priority of the target reference raw material in similar historical formulations.

[0077] Preferably, in one embodiment of the present invention, the method for obtaining the initial priority of the target reference material specifically includes:

[0078] The quantity of raw materials contained in each similar historical formula is used as the numerator, and the quantity of reference raw materials is used as the denominator. The ratio is used as the reference weight of each similar historical formula. The larger the reference weight of a similar historical formula, the greater the reference value of the placement sequence number of the target reference raw material in that similar historical formula. Then, the product of the placement sequence number of the target reference raw material in each similar historical formula and the reference weight of each similar historical formula can be used as the priority evaluation value of the target reference raw material in each similar historical formula. The larger the priority evaluation value, the greater the priority of the target reference raw material in each similar historical formula.

[0079] It should be noted that if the target reference ingredient is not present in a similar historical recipe, the placement sequence number of the target reference ingredient in that similar historical recipe will be set to 0.

[0080] Therefore, the average priority evaluation value of the target reference ingredient in all similar historical formulations can be used as the initial priority of the target reference ingredient.

[0081] As an example, in one embodiment of the present invention, the expression for the initial priority of the target reference material can be specifically as follows:

[0082]

[0083] Where P represents the initial priority of the target reference material; b n E represents the sequential number of the target reference ingredient in the nth similar historical formulation; n This represents the number of ingredients contained in the nth similar historical recipe; F represents the number of reference ingredients; This represents the reference weight of the nth similar historical recipe; This represents the priority evaluation value of the target reference ingredient in the nth similar historical formulation; N represents the number of similar historical formulations.

[0084] Furthermore, the initial priority can be adjusted using the finished product influence coefficient of the target reference raw material, and the product of the finished product influence coefficient and the initial priority can be normalized to limit the calculation result to the range of [0,1], thereby obtaining the release priority of the target reference raw material.

[0085] As an example, in one embodiment of the present invention, the expression for the priority of the target reference material can be specifically as follows:

[0086] P ′ =norm(D×P)

[0087] Among them, P ′ This indicates the priority of the target reference raw material; D represents the finished product impact coefficient of the target reference raw material; P represents the initial priority of the target reference raw material; norm() represents the normalization function used for normalization processing.

[0088] The same method described above can be used to determine the priority of each reference raw material.

[0089] Step S3: Based on the feeding priority, the raw materials included in the current formula are fed into the mixing equipment. During the feeding process, the particle size distribution data and torque data in the mixing equipment are acquired in real time. Based on the particle size distribution data at the current moment and the temporal changes of the torque data in the preset time period before the current moment, the raw material mixing effect value at the current moment is obtained. Based on the raw material mixing effect value, the feeding timing of the raw materials included in the current formula and the mixing speed of the mixing equipment are controlled to obtain the final mixed raw materials of the current formula.

[0090] The higher the priority of a reference ingredient, the more it needs to be added to the mixing equipment during the mixing process. Therefore, based on the addition priority, the ingredients contained in the current formula can be added to the mixing equipment to ensure the final mixing effect.

[0091] It should be noted that since the cylindrical liner products produced by similar historical formulas have similar performance to those produced by the current formula, the raw materials contained in the current formula are also similar to those contained in each similar historical formula. Therefore, the raw materials contained in the current formula are a subset of the raw materials contained in all similar historical formulas. In other words, each raw material contained in the current formula also corresponds to a priority. Therefore, the raw materials contained in the current formula can be added to the mixing equipment in descending order of priority.

[0092] Meanwhile, during the raw material addition process in the current formula, it is also necessary to ensure that the various raw materials can be fully mixed. Therefore, in this embodiment of the invention, during the raw material addition process, the particle size distribution data of the mixed raw materials in the mixing equipment is collected in real time using an installed laser particle size analyzer, and the torque data of the stirring shaft is collected in real time using an installed torque sensor. Subsequently, the mixing effect of the mixing equipment can be analyzed based on the particle size distribution data and torque data, thereby achieving precise control of the timing of adding raw materials in the current formula. It should be noted that the first raw material to be added in the current formula can be directly added to the mixing equipment.

[0093] The larger the particle size distribution data at the current moment, the more uniform the particle size distribution of the mixture in the mixing equipment at the current moment, which indicates a better mixing effect of the raw materials. Furthermore, the smaller the temporal variation of the torque data in the preset time period before the current moment, the more stable the operation of the stirring shaft, which also indicates a better mixing effect of the raw materials. Therefore, the particle size distribution data at the current moment and the temporal variation of the torque data in the preset time period before the current moment can be analyzed. The obtained raw material mixing effect value reflects the mixing effect of the raw materials in the mixing equipment at the current moment. The larger the raw material mixing effect, the better the mixing effect at the current moment. The length of the preset time period is usually in the range of 2 to 5 seconds. In one embodiment of the present invention, the length of the preset time period is set to 3 seconds. The length of the preset time period can also be set by the implementer according to the specific implementation scenario, and is not limited here. It should also be noted that when performing real-time analysis of the mixing effect, a time period greater than or equal to the preset time period length needs to be reserved before the first analysis to ensure that there is a sufficiently long time period before the current moment.

[0094] Preferably, in one embodiment of the present invention, the method for obtaining the raw material mixing effect value at the current moment specifically includes:

[0095] Any two adjacent moments within a preset time period are taken as a group of adjacent moments. The absolute value of the difference between the torque data of the two moments in each group of adjacent moments is taken as the torque change of each group of adjacent moments. The average value of the torque change of all groups of adjacent moments is negatively correlated to obtain the torque change stability at the current moment.

[0096] The particle size distribution data and torque change stability at the current moment are combined and normalized, and the calculation results are limited to the range of [0,1] to obtain the raw material mixing effect value at the current moment.

[0097] As an example, in one embodiment of the present invention, the expression for the raw material mixing effect value at the current moment can be specifically as follows:

[0098]

[0099] Where U represents the raw material mixing effect value at the current moment; L represents the particle size distribution data at the current moment; H m and H ′ m These represent the torque data of two times within the m-th adjacent time group; |H m -H ′ m | represents the torque change in the m-th adjacent time group; M represents the stability of torque change at the current moment; M represents the number of adjacent time groups in the preset time period; tanh() represents the hyperbolic tangent function, used for normalization processing; ε represents the preset adjustment parameter, used to prevent the denominator from being 0. The value range of ε is [0.001, 0.01]. In one embodiment of the present invention, ε is set to 0.01. The specific value of ε can also be set by the implementer according to the specific implementation scenario, and is not limited here.

[0100] It should be noted that negative correlation mapping can also be achieved through other basic mathematical operations in other embodiments of the present invention, which will not be elaborated here.

[0101] The raw material mixing effect value can reflect the mixing effect of raw materials in the mixing equipment in real time. When the raw material mixing effect is good at the current moment, the next raw material can be added to the mixing equipment in the above order at the current moment. Conversely, when the raw material mixing effect is poor at the current moment, the mixing speed of the mixing equipment needs to be increased appropriately at the current moment to improve the raw material mixing effect. Therefore, based on the raw material mixing effect value, the timing of adding raw materials included in the current formula and the mixing speed of the mixing equipment can be controlled to obtain the final mixed raw materials of the current formula, improve the mixing effect of raw materials in the current formula, and thus improve the production quality of subsequent cylindrical liners.

[0102] Preferably, in one embodiment of the present invention, the method for obtaining the final mixed raw materials of the current formulation specifically includes:

[0103] If the raw material mixing effect value at the current moment is greater than the preset effect threshold, it indicates that the raw material mixing effect is good at this time. Then, the next raw material contained in the current formula can be added to the mixing equipment at the current moment. The preset effect threshold is usually in the range of (0.5, 1). In one embodiment of the present invention, the preset effect threshold is set to 0.8. The preset effect threshold can also be set by the implementer according to the specific implementation scenario, and is not limited here.

[0104] If the current raw material mixing effect value is not greater than the preset effect threshold, then no new raw material will be added at the current moment. The mixing speed of the mixing equipment will be adjusted in real time according to the current raw material mixing effect value to obtain the adjusted mixing speed at the current moment, until all the raw materials contained in the current formula are added to the mixing equipment to obtain the final mixed raw materials of the current formula.

[0105] Preferably, in one embodiment of the present invention, the method for obtaining the current stirring speed specifically includes:

[0106] Based on the calculation formula for adjusting the stirring speed, the current adjusted stirring speed is obtained. The calculation formula for adjusting the stirring speed is as follows:

[0107] V ′ =V×(2-U)

[0108] Among them, V ′ V represents the current adjusted stirring speed; V represents the standard stirring speed of the mixing equipment, which is a known value of the mixing equipment and can be set before the equipment is run; U represents the current raw material mixing effect value.

[0109] The smaller the value of the raw material mixing effect at the current moment, the worse the raw material mixing effect at the current moment. In this case, it is necessary to increase the stirring speed to a greater extent to improve the mixing effect of the raw materials.

[0110] Step S4: Produce cylindrical liners based on the final mixed raw materials.

[0111] The final mixture of raw materials in the current formula is more thoroughly stirred, resulting in better mixing. Therefore, higher quality cylindrical liners can be produced based on the final mixture.

[0112] Preferably, in one embodiment of the present invention, the final mixed raw materials can be cast into a mold and subjected to in-situ copolymerization treatment to obtain a cylindrical liner. The in-situ copolymerization treatment is a well-known technique to those skilled in the art and will not be described in detail here.

[0113] Based on the above analysis of the specific requirements for cylindrical liner production, the order of raw material addition in the formulation of the cylindrical liner production process was determined. Simultaneously, effective control over the timing of raw material addition and the mixing speed of the mixing equipment was achieved, effectively meeting the production requirements of cylindrical liners. Furthermore, the cylindrical liner produced in this embodiment effectively solves the liner stickiness problem and improves the liner's wear resistance by adding hydrophobic active materials and friction reducers. Further, by adding liner bosses and adjusting the raw material addition order, the material mixing effect and particle size are effectively improved, supporting the material mixing effect during the cylindrical liner's operation. Compared with existing ceramic liners, rubber-ceramic liners, etc., the cylindrical liner produced in this embodiment has extremely significant performance advantages. The liner performance comparison table is shown below.

[0114]

[0115]

[0116] Liner performance comparison chart

[0117] One embodiment of the present invention provides a cylindrical liner, which is composed of a variety of mixed raw materials and is manufactured by in-situ copolymerization. The cylindrical liner has the advantages of strong wear resistance and low adhesion. The various mixed raw materials include, for example, wear-resistant micro powder, hydrophobic surfactants, friction-reducing materials and other additives.

[0118] It should be noted that the order of the above embodiments of the present invention is merely for descriptive purposes and does not represent the superiority or inferiority of the embodiments. The processes depicted in the accompanying drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0119] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

Claims

1. A method for controlling the production of cylindrical liners, characterized in that, The method includes: Obtain the order number of each raw material added in each historical formula for producing cylindrical liners, as well as various performance data of each historical formula. At the same time, obtain the raw materials and various performance data in the current formula for producing cylindrical liners. Based on the differences in the same performance data between each historical formula and the current formula, similar historical formulas to the current formula are selected from all historical formulas. The raw materials appearing in all similar historical formulas are used as reference raw materials, and any one of the reference raw materials is used as the target reference raw material. The deployment priority of the target reference raw material is obtained based on the difference in the usage of the target reference raw material in the current formula and similar historical formulas, the number of similar historical formulas containing the target reference raw material, and the deployment sequence number of the target reference raw material in the similar historical formulas. Based on the aforementioned feeding priority, the raw materials included in the current formula are fed into the mixing equipment. During the feeding process, particle size distribution data and torque data in the mixing equipment are acquired in real time. The larger the particle size distribution data at the current moment, the more uniform the particle size distribution of the mixture in the mixing equipment at that moment. Based on the particle size distribution data at the current moment and the temporal changes of the torque data in the preset time period before the current moment, the raw material mixing effect value at the current moment is obtained. Based on the raw material mixing effect value, the timing of feeding the raw materials included in the current formula and the mixing speed of the mixing equipment are controlled to obtain the final mixed raw materials of the current formula. A cylindrical liner is produced based on the final mixed raw materials; The priority for obtaining the target reference raw material includes: The average usage of the target reference ingredient in all similar historical formulations is used as the reference usage of the target reference ingredient. The number of similar historical formulations containing the target reference ingredient is used as the numerator, the number of similar historical formulations is used as the denominator, and the ratio is used as the usage frequency value of the target reference ingredient. The finished product impact coefficient of the target reference ingredient is obtained based on the difference between the usage amount of the target reference ingredient in the current formulation and the reference usage amount of the target reference ingredient, as well as the usage frequency value of the target reference ingredient. The initial priority of the target reference ingredient is obtained based on the order number of its placement in each similar historical formulation and the quantity of ingredients contained in each similar historical formulation. The product of the finished product influence coefficient and the initial priority is normalized to obtain the priority of the target reference raw material.

2. The method for controlling the production of cylindrical liners according to claim 1, characterized in that, The process of selecting similar historical recipes from all historical recipes includes: Take any historical recipe as the target historical recipe, and perform negative correlation normalization on the sum of the absolute values ​​of the differences between all the same performance data between the target historical recipe and the current recipe to obtain the performance similarity between the target historical recipe and the current recipe. Historical recipes with performance similarity greater than a preset similarity threshold are used as similar historical recipes for the current recipe.

3. The method for controlling the production of cylindrical liners according to claim 1, characterized in that, The finished product influence coefficient obtained from the target reference raw material includes: The difference between the amount of the target reference ingredient used in the current formulation and the reference amount of the target reference ingredient is taken as the relative value of the amount of the target reference ingredient used. The relative value of the usage amount and the usage frequency value of the target reference raw material are combined and normalized to obtain the finished product influence coefficient of the target reference raw material.

4. The method for controlling the production of cylindrical liners according to claim 1, characterized in that, The initial priority for obtaining the target reference material includes: The numerator is the quantity of ingredients contained in each similar historical recipe, the denominator is the quantity of reference ingredients, and the ratio is used as the reference weight for each similar historical recipe. The product of the release sequence number of the target reference ingredient in each similar historical formulation and the reference weight of each similar historical formulation is used as the priority evaluation value of the target reference ingredient in each similar historical formulation. The average priority assessment value of the target reference ingredient across all similar historical formulations is used as the initial priority of the target reference ingredient.

5. The method for controlling the production of cylindrical liners according to claim 1, characterized in that, The method for obtaining the raw material mixing effect value at the current moment includes: Any two adjacent moments within a preset time period are taken as a group of adjacent moments, and the absolute value of the difference between the torque data of the two moments in each group of adjacent moments is taken as the torque change of each group of adjacent moments. By performing a negative correlation mapping on the average value of the torque changes in all adjacent time groups, the torque change stability at the current time can be obtained. The particle size distribution data and torque change stability at the current moment are combined and normalized to obtain the raw material mixing effect value at the current moment.

6. The method for controlling the production of cylindrical liners according to claim 1, characterized in that, The final mixed ingredients used to obtain the current formula include: If the mixing effect value of the raw materials at the current moment is greater than the preset effect threshold, then the next raw material contained in the current formula will be added to the mixing equipment at the current moment. If the mixing effect value of the raw materials at the current moment is not greater than the preset effect threshold, then no new raw material is added at the current moment, and the mixing speed of the mixing equipment is adjusted in real time according to the mixing effect value of the raw materials at the current moment to obtain the adjusted mixing speed at the current moment, until all the raw materials contained in the current formula are added to the mixing equipment to obtain the final mixed raw materials of the current formula.

7. The method for controlling the production of cylindrical liners according to claim 6, characterized in that, The process of obtaining the current stirring speed adjustment includes: Based on the calculation formula for adjusting the stirring speed, the current adjusting stirring speed is obtained. The calculation formula for adjusting the stirring speed is as follows: in, This indicates the current stirring speed adjustment; This indicates the standard mixing speed of the mixing equipment; This indicates the current value of the raw material mixing effect.

8. The method for controlling the production of cylindrical liners according to claim 1, characterized in that, The process of producing the cylindrical liner based on the final mixed raw materials includes: The final mixed raw materials are poured into a mold and subjected to in-situ copolymerization to obtain a cylindrical liner.

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