Coal gangue multi-stage crushing and screening control method and system

Abstract

The application discloses a coal gangue multi-stage crushing and screening control method and system, which comprises the following steps: obtaining and analyzing historical raw material data and historical crushing data of coal gangue to determine raw material parameters affecting the crushing of coal gangue; obtaining raw material parameter data corresponding to current coal gangue, and analyzing and calculating the raw material parameter data according to the raw material parameters affecting the crushing of coal gangue to obtain a crushing characteristic value; determining initial working parameter conditions of a multi-stage crusher according to the crushing characteristic value, and performing operation; obtaining particle size data of a material after crushing and screening and a preset target particle size, and analyzing and determining a correction coefficient; correcting the initial working parameter conditions according to the correction coefficient to obtain final working parameter conditions to control the multi-stage crushing and screening of coal gangue. The application can adjust the working parameter conditions of the multi-stage crusher according to the analysis of the raw material parameter data corresponding to the current coal gangue to realize the optimized control of the crushing and screening process of coal gangue, so that the crushed material meeting the requirements is obtained.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal gangue crushing and screening, in particular to a coal gangue multi-stage crushing and screening control method and system. BACKGROUND

[0002] Coal gangue refers to impurities and waste contained in coal mined from coal mines, usually including rocks, soil, coal cinder, etc. Coal gangue is a byproduct generated in the process of coal mining, which contains a small amount of coal, and usually needs to be treated to obtain usable coal resources. Its reuse is of great significance to environmental protection and resource recycling. In the production process of coal gangue, multi-stage crushing and screening control method plays a crucial role. After crushing and screening treatment, coal gangue can obtain products meeting the specification requirements for reuse or backfilling.

[0003] However, the traditional coal gangue crushing and screening method usually relies on experience and simple process flow, lacks scientificity and systematicness, resulting in low crushing and screening efficiency and low production efficiency. The traditional method has limited control accuracy on the characteristics of raw materials and the crushing process of coal gangue, and it is difficult to achieve accurate control of product particle size, resulting in that the product quality cannot reach a higher level. In the traditional method, a large amount of human intervention and adjustment are required, which depends on the experience and subjective judgment of workers, and is prone to errors and instability, affecting production efficiency and product quality. SUMMARY

[0004] To solve the above technical problems, the present application provides a coal gangue multi-stage crushing and screening control method and system, comprising:

[0005] Obtain historical raw material data and historical crushing data of coal gangue, and analyze the historical raw material data and historical crushing data to determine the raw material parameters affecting the crushing of coal gangue;

[0006] Obtain raw material parameter data corresponding to the current coal gangue, and analyze and calculate the raw material parameter data according to the raw material parameters affecting the crushing of coal gangue to obtain the crushing characteristic value of coal gangue;

[0007] Determine the initial working parameter condition of the multi-stage crusher according to the crushing characteristic value of coal gangue, and control the multi-stage crusher to run according to the initial working parameter condition;

[0008] Screen the material obtained after crushing, and determine the particle size data of the screened material and the preset target particle size;

[0009] Analyze the particle size data of the material and the target particle size, and determine the correction coefficient of the working parameter condition of the multi-stage crusher according to the analysis result;

[0010] According to the correction coefficient, the initial working parameter condition of the multi-stage crusher is corrected to obtain the final working parameter condition, and the multi-stage crushing and screening of the coal gangue is controlled according to the final working parameter condition.

[0011] Further, the historical raw material data and the historical crushing data of the coal gangue are acquired, and the historical raw material data and the historical crushing data are analyzed to determine the raw material parameters affecting the crushing of the coal gangue, including:

[0012] The historical raw material data is divided into a plurality of raw material parameter data groups according to the parameter types, and the correlation degrees of each raw material parameter data group and the historical crushing data are analyzed;

[0013] The raw material parameter data group with a correlation degree greater than a preset value is selected to determine the raw material parameter affecting the crushing of the coal gangue.

[0014] Further, the raw material parameter data corresponding to the current coal gangue is acquired, and the raw material parameter data is analyzed and calculated according to the raw material parameters affecting the crushing of the coal gangue to obtain the crushing characteristic value of the coal gangue, including:

[0015] The raw material parameter data corresponding to the current coal gangue is acquired, and the data corresponding to each raw material parameter in the raw material parameter data is determined;

[0016] The average value of the data corresponding to each raw material parameter is calculated, and the difference between the average value of the data corresponding to each raw material parameter and the preset standard average value of each raw material parameter is calculated to obtain an average value difference;

[0017] The average value difference is evaluated to obtain a data characteristic evaluation value corresponding to each raw material parameter;

[0018] The correlation degree corresponding to each raw material parameter is determined, and the sum of the correlation degrees corresponding to all raw material parameters is calculated to obtain a total correlation degree;

[0019] The ratio of the correlation degree corresponding to each raw material parameter to the total correlation degree is calculated to obtain the weight corresponding to each raw material parameter;

[0020] The data characteristic evaluation value corresponding to each raw material parameter and the weight are weighted and added to obtain the crushing characteristic value of the coal gangue.

[0021] Further, the initial working parameter condition of the multi-stage crusher is determined according to the crushing characteristic value of the coal gangue, and the multi-stage crusher is controlled to run according to the initial working parameter condition, including:

[0022] The crushing characteristic value ΔP of the coal gangue is acquired, and a preset crushing characteristic preset value P0 is set, and a preset difference value P1, a preset difference value P2, a third preset difference value P3 and a fourth preset difference value P4 are determined, and P1

[0023] According to the difference between the crushing characteristic value ΔP and the preset crushing characteristic preset value P0, the preset working condition Ai is selected as the initial working parameter condition of the multi-stage crusher;

[0024] When ΔP-P0≤P1, the preset working condition A1 is selected as the initial working parameter condition of the multi-stage crusher;

[0025] When P1<ΔP-P0≤P2, the preset working condition A2 is selected as the initial working parameter condition of the multi-stage crusher;

[0026] When P2<ΔP-P0≤P3, the third preset working condition A3 is selected as the initial working parameter condition of the multi-stage crusher;

[0027] When P3<ΔP-P0≤P4, the fourth preset working condition A4 is selected as the initial working parameter condition of the multi-stage crusher;

[0028] According to the selected preset working condition Ai(ai, bi) as the initial working parameter condition of the multi-stage crusher, the multi-stage crusher is controlled to run.

[0029] Further, the material obtained after crushing is screened, and the particle size data of the screened material and the preset target particle size are determined, including:

[0030] The multi-stage crusher crushes the coal gangue according to the initial working parameter condition, and screens the material obtained after crushing;

[0031] The particle size data of the screened material is acquired, and the target particle size required after crushing and screening of the coal gangue is determined.

[0032] Further, the particle size data and the target particle size of the material are analyzed, and the correction coefficient of the working parameter condition of the multi-stage crusher is determined according to the analysis result, including:

[0033] Determine the data greater than the target particle size in the particle size data of the material, and calculate the average value of the data greater than the target particle size in the particle size data of the material;

[0034] The correction coefficient-average value interval correspondence is preset, wherein the correction coefficient-average value interval correspondence is associated with a corresponding correction coefficient for each average value interval;

[0035] Determine the average value of the particle size data greater than the target particle size in the particle size data of the material, and select the correction coefficient corresponding to the average value interval as the correction coefficient corresponding to the working parameter condition of the multi-stage crusher based on the mapping relationship of the average value interval in the correction coefficient-average value interval correspondence.

[0036] Further, the initial working parameter condition of the multi-stage crusher is corrected according to the correction coefficient to obtain a final working parameter condition, and the multi-stage crushing and screening of the coal gangue are controlled according to the final working parameter condition.

[0037] The correction coefficient mi of the working parameter condition of the multi-stage crusher is obtained, and the initial working parameter condition Ai (ai, bi) of the multi-stage crusher is corrected according to the correction coefficient mi to obtain the final working parameter condition Ai (ai*mi, bi*mi).

[0038] The multi-stage crushing and screening of the coal gangue are controlled according to the final working parameter condition Ai (ai*mi, bi*mi).

[0039] The application also provides a coal gangue multi-stage crushing and screening control system, which comprises:

[0040] The acquisition module is used for acquiring the historical raw material data and the historical crushing data of the coal gangue, and analyzing the historical raw material data and the historical crushing data to determine the raw material parameters affecting the crushing of the coal gangue.

[0041] The calculation module is used for acquiring the raw material parameter data corresponding to the current coal gangue, and analyzing and calculating the raw material parameter data according to the raw material parameters affecting the crushing of the coal gangue to obtain the crushing characteristic value of the coal gangue.

[0042] The control module is used for determining the initial working parameter condition of the multi-stage crusher according to the crushing characteristic value of the coal gangue, and controlling the multi-stage crusher to run according to the initial working parameter condition.

[0043] The determination module is used for screening the material obtained after crushing, and determining the particle size data of the screened material and the preset target particle size.

[0044] The analysis module is used for analyzing the particle size data of the material and the target particle size, and determining the correction coefficient of the working parameter condition of the multi-stage crusher according to the analysis result.

[0045] The correction module is used for correcting the initial working parameter condition of the multi-stage crusher according to the correction coefficient, obtaining the final working parameter condition, and controlling the coal gangue multi-stage crushing and screening according to the final working parameter condition.

[0046] Compared with the prior art, the coal gangue multi-stage crushing and screening control method and system have the beneficial effects that:

[0047] The working parameters of the multi-stage crusher are effectively controlled, the production efficiency is improved, the energy consumption is reduced, the equipment utilization rate is improved, and the production cost is reduced.

[0048] The working parameter condition is corrected, the correction coefficient is determined according to the particle size data and the target particle size, the crushing effect is optimized, and the crushed product is more in line with the expected particle size requirement.

[0049] The working parameter condition is corrected and controlled, the automatic operation of the multi-stage crusher is realized, the human intervention is reduced, and the automation level of the production process is improved.

[0050] The historical data and real-time data are analyzed, the data-driven decision is realized, the enterprise is helped to optimize and adjust according to the objective data, the production efficiency and product quality are improved. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 is a flow structure schematic diagram of the coal gangue multi-stage crushing and screening control method in the embodiment of the present application.

[0052] Figure 2 is a composition schematic diagram of the coal gangue multi-stage crushing and screening control system in the embodiment of the present application. DETAILED DESCRIPTION

[0053] The specific embodiments of the present application will be further described in detail below in combination with the drawings and embodiments. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0054] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the platform or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0055] The terms “second” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with “second” or “second” may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, “multiple” means two or more.

[0056] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0057] like Figure 1 As shown in the embodiments of this application, a method for controlling multi-stage crushing and screening of coal gangue is provided, including: S100: acquiring historical raw material data and historical crushing data of coal gangue, and analyzing the historical raw material data and historical crushing data to determine the raw material parameters affecting coal gangue crushing; S200: acquiring the raw material parameter data corresponding to the current coal gangue, and analyzing and calculating the raw material parameter data according to the raw material parameters affecting coal gangue crushing to obtain the crushing characteristic value of coal gangue; S300: determining the initial crushing of the multi-stage crusher based on the crushing characteristic value of coal gangue. S400: Initialize the operating parameters and control the multi-stage crusher to operate based on the initial operating parameters; S500: Screen the crushed material and determine the particle size data and preset target particle size of the screened material; S600: Analyze the particle size data and target particle size of the material and determine the correction coefficient of the operating parameters of the multi-stage crusher based on the analysis results; S600: Correct the initial operating parameters of the multi-stage crusher based on the correction coefficient to obtain the final operating parameters and control the multi-stage crushing and screening of coal gangue based on the final operating parameters.

[0058] Furthermore, by effectively controlling the operating parameters of the multi-stage crusher, this invention can improve production efficiency, reduce energy consumption, and increase equipment utilization, thereby lowering production costs. By modifying the operating parameter conditions and determining the correction coefficient based on the material's particle size data and target particle size, this invention can optimize the crushing effect, making the crushed product more consistent with the expected particle size requirements. Through the modification and control of operating parameter conditions, this invention can achieve automated operation of the multi-stage crusher, reducing human intervention and improving the automation level of the production process. Through the analysis of historical and real-time data, this invention can achieve data-driven decision-making, helping enterprises to optimize and adjust based on objective data, thereby improving production efficiency and product quality.

[0059] In an embodiment of the present application, a coal gangue multi-stage crushing and screening control method is provided, which comprises obtaining historical raw material data and historical crushing data of coal gangue, and analyzing the historical raw material data and the historical crushing data to determine raw material parameters affecting the crushing of coal gangue, including: dividing the historical raw material data into a plurality of raw material parameter data groups according to parameter types, and analyzing the correlation degree of each raw material parameter data group with the historical crushing data; selecting raw material parameter data groups with a correlation degree greater than a preset value to determine the raw material parameters affecting the crushing of coal gangue.

[0060] Specifically, the historical raw material data is divided into different raw material parameter data groups according to parameter types, such as raw material particle size, moisture content, hardness, etc.; for each raw material parameter data group, the correlation degree between the parameter and the historical crushing data is evaluated by statistical analysis and correlation analysis method to determine which raw material parameters may affect the crushing process of coal gangue; a preset correlation degree threshold is set to screen out raw material parameter data groups with significant correlation with the crushing process, and raw material parameter data groups with a correlation degree greater than a preset value are selected, which are determined as key raw material parameters affecting the crushing of coal gangue and may need to be focused on and controlled in subsequent processes. This step accurately determines the key raw material parameters affecting the crushing of coal gangue by analyzing historical data, avoiding blind trial and error and wasting resources; based on the data analysis results, data-driven decision-making can be realized to help enterprises more scientifically adjust the process flow and control parameters, improve production efficiency and product quality; after determining the key raw material parameters, the production process can be more accurately controlled to improve production stability, reduce product quality fluctuations, and improve customer satisfaction.

[0061] In an embodiment of the present application, a coal gangue multi-stage crushing and screening control method is provided, which comprises obtaining raw material parameter data corresponding to current coal gangue, and analyzing and calculating the raw material parameter data according to raw material parameters affecting the crushing of coal gangue to obtain a crushing characteristic value of the coal gangue, including: obtaining raw material parameter data corresponding to current coal gangue, and determining the data corresponding to each raw material parameter in the raw material parameter data; calculating the average value of the data corresponding to each raw material parameter, and calculating the difference between the average value of the data corresponding to each raw material parameter and the preset standard average value of each raw material parameter to obtain an average value difference; evaluating the average value difference to obtain a data characteristic evaluation value corresponding to each raw material parameter; determining the correlation degree corresponding to each raw material parameter, and calculating the sum of the correlation degrees corresponding to all raw material parameters to obtain a total correlation degree; calculating the ratio of the correlation degree corresponding to each raw material parameter to the total correlation degree respectively to obtain the weight corresponding to each raw material parameter; and performing weighted addition calculation on the data characteristic evaluation value corresponding to each raw material parameter and the weight to obtain the crushing characteristic value of the coal gangue.

[0062] Specifically, various raw material parameter data corresponding to the current coal gangue are acquired, such as particle size, moisture content, hardness, etc.; for each raw material parameter data, an average value thereof is calculated and compared with a preset standard average value to obtain an average value difference, which is used to evaluate the deviation degree of the data from the standard; according to the average value difference, each raw material parameter data is evaluated to determine the data characteristics thereof; the correlation degree corresponding to each raw material parameter is determined, and a total correlation degree is calculated, and then the weight corresponding to each raw material parameter is calculated, that is, the ratio of the correlation degree of each parameter to the total correlation degree, which is used to measure the influence degree of each parameter on the crushing of the coal gangue; the data characteristic evaluation value and the weight corresponding to each raw material parameter are weighted and added to obtain the crushing characteristic value of the coal gangue, which comprehensively considers the data characteristics of each raw material parameter and the influence weight of each raw material parameter on the crushing of the coal gangue. Through the calculation of the average value difference and the evaluation of the data characteristics, the data characteristics of each raw material parameter can be comprehensively understood, which helps to identify the key factors in the crushing process of the coal gangue; through the calculation of the correlation degree and the weight, the influence degree of each raw material parameter on the crushing of the coal gangue can be determined, which provides a basis for subsequent process adjustment; through the calculation of the crushing characteristic value, the crushing characteristics of the coal gangue can be comprehensively evaluated, which helps to optimize the production process and improve the product quality; based on the analysis and evaluation of the data, data-driven decision-making can be realized, and the scientificity and efficiency of the production process can be improved.

[0063] In the embodiments of the present application, a coal gangue multi-stage crushing and screening control method is provided, which determines initial working parameter conditions of a multi-stage crusher according to a crushing characteristic value of the coal gangue, and controls the multi-stage crusher to run according to the initial working parameter conditions, including: obtaining the crushing characteristic value ΔP of the coal gangue and a pre-set crushing characteristic preset value P0, and determining pre-set preset difference values P1, P2, a third preset difference value P3 and a fourth preset difference value P4, and P1

[0064] Specifically, the crushing characteristic preset value P0 and the preset difference values P1, P2, P3 and P4 are set in advance, wherein P1 < P2 < P3 < P4. At the same time, the preset working conditions A1 (a1, b1), A2 (a2, b2), A3 (a3, b3) and A4 (a4, b4) are set, wherein a1-a4 are the crushing rotational speeds, b1-b4 are the crushing powers, and satisfy certain increasing relationship; according to the difference between the crushing characteristic value ΔP and the preset value P0, it is determined which preset working condition is selected as the initial working parameter condition of the multi-stage crusher; according to the selected preset working condition Ai (ai, bi), the multi-stage crusher is controlled to operate, so as to ensure that the crushing process of coal gangue is carried out under appropriate working parameter conditions. This step intelligently selects the most suitable working condition according to the difference between the crushing characteristic value and the preset value, realizes intelligent control of the multi-stage crusher, improves production efficiency and product quality; by selecting appropriate working parameter conditions, the energy consumption of the crusher can be effectively controlled, energy costs can be saved, and production costs can be reduced; according to the actual crushing characteristic value of the coal gangue, the working parameter conditions can be adjusted to improve the crushing efficiency and production capacity; automatically selecting the working condition according to the crushing characteristic value can reduce the need for human intervention, reduce the burden on the operator, and improve the production automation level.

[0065] In the embodiments of the present application, a coal gangue multi-stage crushing and screening control method is provided, which screens the material obtained after crushing and determines the particle size data of the screened material and the preset target particle size, comprising: a multi-stage crusher crushing coal gangue according to initial working parameter conditions, and screening the material obtained after crushing; obtaining the particle size data of the screened material and determining the target particle size of the coal gangue required after crushing and screening.

[0066] Specifically, in the multi-stage crusher, coal gangue after crushing will obtain materials of different particle sizes, which are then sent to a screening device for screening according to the size of the particle size, and the materials are divided into different particle size grades; the particle size of the screened material is analyzed to obtain the data of each particle size grade; according to the production demand and product standard, the target particle size of the coal gangue required after crushing and screening is set in advance. This step can realize the control and monitoring of product quality by screening and obtaining the particle size data of the crushed material, to ensure that the required products are produced; according to the setting of the target particle size, the working parameters of the crusher can be adjusted to optimize the production process, improve the production efficiency and product quality; by accurately controlling the crushing and screening process of coal gangue, waste can be reduced, production cost can be reduced, and resource utilization rate can be improved; using automatic equipment for crushing and screening process can improve the automation degree of the production line, reduce manual intervention, and reduce operating cost.

[0067] In the embodiments of the present application, a coal gangue multi-stage crushing and screening control method is provided, which analyzes the particle size data of the material and the target particle size, and determines the correction coefficient of the working parameter condition of the multi-stage crusher according to the analysis result, including: determining the data greater than the target particle size in the particle size data of the material, and calculating the average value of the data greater than the target particle size in the particle size data of the material; the correction coefficient-average value interval correspondence is preset, wherein the correction coefficient-average value interval correspondence is associated with the corresponding correction coefficient for each average value interval; the average value of the particle size data greater than the target particle size in the material particle size data is determined, and based on the mapping relationship of the average value interval of the average value in the correction coefficient-average value interval correspondence, the correction coefficient corresponding to the average value interval is selected as the correction coefficient corresponding to the working parameter condition of the multi-stage crusher.

[0068] Specifically, the data greater than the target particle size is selected from the particle size data of the material, which represents the particles that need to be further processed; the average value of the data greater than the target particle size is calculated to obtain the average value of the data; the correction coefficient-average value interval correspondence is preset, that is, the corresponding correction coefficient is set for different average value intervals, which is used to adjust the working parameter condition of the multi-stage crusher; according to the average value interval of the average value of the data greater than the target particle size, the corresponding correction coefficient is found in the correction coefficient-average value interval correspondence, which is associated with the working parameter condition of the multi-stage crusher. This step realizes the accurate adjustment of the working parameter condition of the multi-stage crusher by calculating the average value of the data greater than the target particle size and mapping to the correction coefficient, so that it is more suitable for the actual crushing condition; according to the correction coefficient-average value interval correspondence, the automatic selection and application of the correction coefficient are realized, which improves the automation degree of the production line and reduces manual intervention; by dynamically adjusting the working parameter condition, the multi-stage crusher can more efficiently crush the data greater than the target particle size when processing, which improves the production efficiency; adjusting the working parameter condition can make the crushed material more meet the target particle size requirement, thereby optimizing the product quality and improving customer satisfaction.

[0069] In the embodiments of the present application, a coal gangue multi-stage crushing and screening control method is provided, which is used to correct the initial working parameter condition of the multi-stage crusher according to the correction coefficient, obtain the final working parameter condition, and control the coal gangue multi-stage crushing and screening according to the final working parameter condition, including: obtaining the correction coefficient mi of the working parameter condition of the multi-stage crusher, and correcting the initial working parameter condition Ai(ai, bi) of the multi-stage crusher according to the correction coefficient mi to obtain the final working parameter condition Ai(ai*mi, bi*mi); controlling the coal gangue multi-stage crushing and screening according to the final working parameter condition Ai(ai*mi, bi*mi).

[0070] Specifically, the correction coefficient mi is calculated according to the aforementioned correction coefficient-average value interval correspondence relationship, used to adjust the working parameter conditions of the multi-stage crusher; by multiplying the initial working parameter conditions Ai(ai, bi) by the correction coefficient mi, the final working parameter conditions Ai(ai*mi, bi*mi) are obtained, so that the working parameters are corrected according to the actual situation; the final working parameter conditions Ai(ai*mi, bi*mi) are applied to the multi-stage crusher to control the crushing and screening process of the coal gangue, and these parameters will affect the operation mode, crushing efficiency and particle size of the final product of the crusher. This step realizes the precise control of the multi-stage crusher by correcting the working parameter conditions, so that it can better adapt to the actual crushing demand and improve the crushing efficiency and product quality; the application of the correction coefficient enables the working parameters to be flexibly adjusted according to the actual situation, adapting to different particle size requirements and changes in the characteristics of the coal gangue; by controlling the multi-stage crushing and screening of the coal gangue according to the final working parameter conditions, the production process can be optimized, the production efficiency can be improved, and the cost can be reduced; precise control of the crushing and screening process of the coal gangue can improve the particle size consistency and quality stability of the product, meeting the customer's demand

[0071] As shown in Figure 2 In the embodiments of the present application, a coal gangue multi-stage crushing and screening control system is provided, comprising: an acquisition module for acquiring historical raw material data and historical crushing data of the coal gangue, and analyzing the historical raw material data and the historical crushing data to determine the raw material parameters affecting the crushing of the coal gangue; a calculation module for acquiring raw material parameter data corresponding to the current coal gangue, and analyzing and calculating the raw material parameter data according to the raw material parameters affecting the crushing of the coal gangue to obtain the crushing characteristic value of the coal gangue; a control module for determining the initial working parameter conditions of the multi-stage crusher according to the crushing characteristic value of the coal gangue, and controlling the multi-stage crusher to operate according to the initial working parameter conditions; a determination module for screening the material obtained after crushing, and determining the particle size data of the screened material and the preset target particle size; an analysis module for analyzing the particle size data of the material and the target particle size, and determining the correction coefficient of the working parameter conditions of the multi-stage crusher according to the analysis result; a correction module for correcting the initial working parameter conditions of the multi-stage crusher according to the correction coefficient to obtain the final working parameter conditions, and controlling the multi-stage crushing and screening of the coal gangue according to the final working parameter conditions.

[0072] In summary, the coal gangue multi-stage crushing and screening control method and system provided by the embodiment of the present application includes: obtaining and analyzing historical raw material data and historical crushing data of coal gangue, and determining raw material parameters affecting the crushing of coal gangue; obtaining raw material parameter data corresponding to current coal gangue, and analyzing and calculating the raw material parameter data according to the raw material parameters affecting the crushing of coal gangue to obtain a crushing characteristic value; determining initial working parameter conditions of a multi-stage crusher according to the crushing characteristic value, and performing operation; obtaining particle size data of a material after crushing and screening and a preset target particle size, and analyzing and determining a correction coefficient; correcting the initial working parameter conditions according to the correction coefficient to obtain final working parameter conditions, so as to control the multi-stage crushing and screening of coal gangue. The present application can adjust the working parameter conditions of the multi-stage crusher according to the analysis of the raw material parameter data corresponding to the current coal gangue, so as to realize the optimized control of the crushing and screening process of coal gangue, and thus obtain crushed materials meeting the requirements.

[0073] Finally, it should be noted that: obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

[0074] The above is only one embodiment of the present application, but cannot limit the scope of the present application, and any structural changes made according to the present application should be considered to fall within the protection scope of the present application as long as the essence of the present application is not lost.

[0075] The term "comprising" or any other similar word is intended to cover non-exclusive inclusion, so that the process, platform, article or device / platform including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to the process, platform, article or device / platform.

[0076] So far, the technical solutions of the present application have been described in combination with the further embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to closely related technical features without deviating from the principles of the present application, and the technical solutions after the changes or replacements will fall within the protection scope of the present application.

[0077] The above is only a preferred embodiment of the present application, and is not used to limit the protection scope of the present application.

Claims

1. A coal gangue multi-stage crushing and screening control method, characterized in that, The method comprises the following steps: obtaining historical raw material data and historical crushing data of coal gangue, analyzing the historical raw material data and the historical crushing data, determining raw material parameters affecting the crushing of the coal gangue, dividing the historical raw material data into a plurality of raw material parameter data groups according to parameter types, and analyzing the correlation of each raw material parameter data group with the historical crushing data; selecting raw material parameter data groups with a correlation greater than a preset value to determine raw material parameters affecting the crushing of the coal gangue; obtaining raw material parameter data corresponding to the current coal gangue, analyzing and calculating the raw material parameter data according to the raw material parameters affecting the crushing of the coal gangue, and obtaining a crushing characteristic value of the coal gangue; obtaining raw material parameter data corresponding to the current coal gangue, and determining data corresponding to each raw material parameter in the raw material parameter data; calculating the average value of the data corresponding to each raw material parameter, and calculating the difference between the average value of the data corresponding to each raw material parameter and a preset standard average value of each raw material parameter to obtain an average value difference; evaluating the average value difference to obtain a data characteristic evaluation value corresponding to each raw material parameter; determining the correlation of each raw material parameter, and calculating the sum of the correlations of all raw material parameters to obtain a total correlation; calculating the ratio of the correlation of each raw material parameter to the total correlation to obtain a weight corresponding to each raw material parameter; and performing weighted addition calculation on the data characteristic evaluation value corresponding to each raw material parameter and the weight to obtain a crushing characteristic value of the coal gangue; determining initial working parameter conditions of the multi-stage crusher according to the crushing characteristic value of the coal gangue, and controlling the multi-stage crusher to operate according to the initial working parameter conditions; screening the material obtained after crushing, and determining particle size data and a preset target particle size of the screened material; analyzing the particle size data and the target particle size of the material, and determining a correction coefficient of the working parameter conditions of the multi-stage crusher according to the analysis result; correcting the initial working parameter conditions of the multi-stage crusher according to the correction coefficient to obtain final working parameter conditions, and controlling the multi-stage crushing and screening of the coal gangue according to the final working parameter conditions.

2. The coal gangue multi-stage crushing and screening control method according to claim 1, characterized in that, The method of determining the initial working parameter conditions of the multi-stage crusher according to the crushing characteristic value of the coal gangue, and controlling the multi-stage crusher to operate according to the initial working parameter conditions, comprises the following steps: obtaining a crushing characteristic value ΔP of the coal gangue and a preset crushing characteristic preset value P0, and determining a preset difference value P1, a preset difference value P2, a third preset difference value P3, and a fourth preset difference value P4, and P1 selecting a preset working condition Ai as the initial working parameter condition of the multi-stage crusher according to the difference between the crushing characteristic value ΔP and the preset crushing characteristic preset value P0. When △P-P0≤P1, the first preset working condition A1 is selected as the initial working parameter condition of the multi-stage crusher; When P1<△P-P0≤P2, the second preset working condition A2 is selected as the initial working parameter condition of the multi-stage crusher; When P2<△P-P0≤P3, the third preset working condition A3 is selected as the initial working parameter condition of the multi-stage crusher; When P3<△P-P0≤P4, the fourth preset working condition A4 is selected as the initial working parameter condition of the multi-stage crusher; According to the selected Ai (ai, bi) preset working condition as the initial working parameter condition of the multi-stage crusher, the multi-stage crusher is controlled to run.

3. The coal gangue multi-stage crushing and screening control method according to claim 2, characterized in that, The screened material is screened, and the particle size data of the screened material and the preset target particle size are determined, including: The multi-stage crusher crushes the coal gangue according to the initial working parameter condition, and screens the material obtained after crushing; The particle size data of the screened material is obtained, and the target particle size of the coal gangue after crushing and screening is determined in advance.

4. The coal gangue multi-stage crushing and screening control method according to claim 3, characterized in that, The particle size data and the target particle size of the material are analyzed, and the correction coefficient of the working parameter condition of the multi-stage crusher is determined according to the analysis result, including: The data greater than the target particle size in the particle size data of the material is determined, and the average value of the data greater than the target particle size in the particle size data of the material is calculated; The correction coefficient-average value interval correspondence is preset, wherein the correction coefficient-average value interval correspondence is associated with the corresponding correction coefficient for each average value interval; The average value of the particle size data greater than the target particle size in the particle size data of the material is determined, and based on the mapping relationship of the average value interval to which the average value belongs in the correction coefficient-average value interval correspondence, the correction coefficient corresponding to the average value interval is selected as the correction coefficient corresponding to the working parameter condition of the multi-stage crusher.

5. The coal gangue multi-stage crushing and screening control method according to claim 4, characterized in that, The initial working parameter condition of the multi-stage crusher is corrected according to the correction coefficient to obtain the final working parameter condition, and the multi-stage crushing and screening of the coal gangue is controlled according to the final working parameter condition, including: The correction coefficient mi of the working parameter condition of the multi-stage crusher is obtained, and the initial working parameter condition Ai (ai, bi) of the multi-stage crusher is corrected according to the correction coefficient mi to obtain the final working parameter condition Ai (ai*mi, bi*mi); The multi-stage crushing and screening of the coal gangue is controlled according to the final working parameter condition Ai (ai*mi, bi*mi).

6. A coal gangue multi-stage crushing and screening control system, characterized in that, Including: The acquisition module is used to acquire the historical raw material data and historical crushing data of the coal gangue, analyze the historical raw material data and historical crushing data, determine the raw material parameters affecting the crushing of the coal gangue, divide the historical raw material data into a plurality of raw material parameter data groups according to the parameter types, analyze the correlation degree of each raw material parameter data group and the historical crushing data, and select the raw material parameter data group with a correlation degree greater than a preset value to determine the raw material parameters affecting the crushing of the coal gangue; The computing module is configured to obtain raw material parameter data corresponding to the current coal gangue, analyze and calculate the raw material parameter data according to raw material parameters affecting crushing of the coal gangue, and obtain a crushing characteristic value of the coal gangue; obtain raw material parameter data corresponding to the current coal gangue, and determine data corresponding to each raw material parameter in the raw material parameter data; calculate an average value of the data corresponding to each raw material parameter, and calculate a difference between the average value of the data corresponding to each raw material parameter and a preset standard average value of each raw material parameter to obtain an average difference value; The average difference value is evaluated to obtain a data characteristic evaluation value corresponding to each raw material parameter; a correlation degree corresponding to each raw material parameter is determined, and a sum of the correlation degrees corresponding to all raw material parameters is calculated to obtain a total correlation degree; a ratio of the correlation degree corresponding to each raw material parameter to the total correlation degree is calculated to obtain a weight corresponding to each raw material parameter; the data characteristic evaluation value corresponding to each raw material parameter is weighted and added to obtain the crushing characteristic value of the coal gangue; and the control module is configured to determine initial working parameter conditions of the multi-stage crusher according to the crushing characteristic value of the coal gangue, and control the multi-stage crusher to operate according to the initial working parameter conditions; The determining module is configured to screen the material obtained after crushing, and determine particle size data of the screened material and a preset target particle size; The analysis module is configured to analyze the particle size data of the material and the target particle size, and determine a correction coefficient of the working parameter conditions of the multi-stage crusher according to an analysis result; The correction module is configured to correct the initial working parameter conditions of the multi-stage crusher according to the correction coefficient to obtain final working parameter conditions, and control the multi-stage crushing and screening of the coal gangue according to the final working parameter conditions.

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