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

Abstract

The invention discloses a coal gangue multistage crushing and screening control method and system, and the method comprises the steps: obtaining and analyzing historical raw material data and historical crushing data of coal gangue, and determining raw material parameters affecting the crushing of the coal gangue; 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 parameter influencing the crushing of the coal gangue to obtain a crushing characteristic value; determining initial working parameter conditions of the multi-stage crusher according to the crushing characteristic value, and operating the multi-stage crusher; obtaining particle size data of the crushed and screened material and a preset target particle size, and analyzing the particle size data and the preset target particle size to determine a correction coefficient; and correcting the initial working parameter condition according to the correction coefficient to obtain a final working parameter condition so as to control multi-stage crushing and screening of the coal gangue. The working parameter conditions of the multi-stage crusher can be adjusted according to the analysis of the raw material parameter data corresponding to the current coal gangue, so that the optimal control of the coal gangue crushing and screening process is realized, and the crushed materials meeting the requirements are obtained.

Description

Technical Field

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

[0002] Gangue refers to the impurities and waste contained in the coal mined from the coal mine, usually including rocks, soil, coal slag, etc. Gangue is a by-product produced in the coal mining process. It contains a low amount of coal and usually needs to be processed to obtain usable coal resources. Its reuse is of great significance to environmental protection and resource recycling. In the production process of gangue, multi-stage crushing and screening control methods play a vital role. After crushing and screening, gangue can be obtained into products that meet the specification requirements for reuse or backfill.

[0003] However, traditional methods of crushing and screening coal gangue usually rely on experience and simple process flow, lack of scientificity and systematicness, resulting in low crushing and screening efficiency and low production efficiency. Traditional methods have limited control accuracy over the raw material characteristics and crushing process of coal gangue, and it is difficult to achieve precise control of product particle size, resulting in product quality unable to reach a higher level. In addition, traditional methods require a lot of human intervention and adjustment, rely on workers' experience and subjective judgment, are prone to errors and instability, and affect production efficiency and product quality. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a method and system for controlling multi-stage crushing and screening of coal gangue, comprising:

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

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

[0007] Determine the 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;

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

[0009] Analyze the particle size data and target particle size of the material, and determine the correction coefficient of the working parameter conditions of the multi-stage crusher based on the analysis results;

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

[0011] Furthermore, the acquisition of historical raw material data and historical crushing data of coal gangue, and analysis of the historical raw material data and historical crushing data to determine the raw material parameters affecting the crushing of coal gangue include:

[0012] Divide the historical raw material data into several raw material parameter data groups according to parameter types, and analyze the correlation between each raw material parameter data group and the historical crushing data;

[0013] The raw material parameter data group with a correlation greater than a preset value is selected and determined as the raw material parameters affecting the crushing of coal gangue.

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

[0015] 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;

[0016] Calculate the average value of the data corresponding to each raw material parameter, and calculate 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 the average value difference;

[0017] The average value difference is evaluated and the data characteristic evaluation value corresponding to each raw material parameter is obtained;

[0018] Determine the correlation corresponding to each raw material parameter, and calculate the sum of the correlations corresponding to all raw material parameters to obtain a total correlation;

[0019] Calculate the ratio of the correlation degree corresponding to each raw material parameter to the total correlation degree respectively, and obtain the weight corresponding to each raw material parameter respectively;

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

[0021] Further, the initial working parameter conditions of the multi-stage crusher are determined according to the crushing characteristic values ​​of the coal gangue, and the multi-stage crusher is controlled to operate according to the initial working parameter conditions, including:

[0022] Obtaining the crushing characteristic value △P of the coal gangue and the preset crushing characteristic preset value P0, and determining the preset preset difference P1, the preset difference P2, the third preset difference P3 and the fourth preset difference P4, and P1<P2<P3<P4; presetting the preset working condition A1 (a1, b1), the preset working condition A2 (a2, b2), the third preset working condition A3 (a3, b3) and the fourth preset working condition A4 (a4, b4), wherein a1-a4 are respectively to the fourth preset crushing rotation speed, and a1<a2<a3<a4, b1-b4 are respectively to the fourth preset crushing power, and b1<b2<b3<b4;

[0023] According to the difference between the crushing characteristic value △P 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 △P-P0≤P1, the preset working condition A1 is selected as the initial working parameter condition of the multi-stage crusher;

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

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

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

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

[0029] Furthermore, 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 gangue according to the initial working parameter conditions and screens the crushed materials;

[0031] Obtain the particle size data of the screened material and determine the preset target particle size required for the gangue after crushing and screening.

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

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

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

[0035] The average value of the particle size data larger than the target particle size in the material particle size data is determined, and based on the mapping relationship between the average value interval to which the average value belongs in the correction coefficient-average value interval correspondence relationship, 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.

[0036] Furthermore, the initial working parameter conditions of the multi-stage crusher are corrected according to the correction coefficient to obtain the final working parameter conditions, and the multi-stage crushing and screening of coal gangue are controlled according to the final working parameter conditions, including:

[0037] Obtain the correction coefficient mi of the working parameter condition of the multi-stage crusher, and correct the initial working parameter condition Ai (ai, bi) of the multi-stage crusher according to the correction coefficient mi, so as to obtain the final working parameter condition Ai (ai * mi, bi * mi);

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

[0039] The present invention also provides a coal gangue multi-stage crushing and screening control system, comprising:

[0040] An acquisition module is used to acquire 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 that affect the crushing of coal gangue;

[0041] The calculation module is used to obtain the raw material parameter data corresponding to the current gangue, and analyze and calculate the raw material parameter data according to the raw material parameters that affect the crushing of the gangue to obtain the crushing characteristic value of the gangue;

[0042] A control module, used to determine the initial working parameter conditions of the multi-stage crusher according to the crushing characteristic value of the gangue, and control the multi-stage crusher to operate according to the initial working parameter conditions;

[0043] A determination module is used to screen the material obtained after crushing and determine the particle size data of the screened material and a preset target particle size;

[0044] An analysis module is used to analyze the particle size data and target particle size of the material, and determine the correction coefficient of the working parameter conditions of the multi-stage crusher according to the analysis results;

[0045] The correction module is used to correct the initial working parameter conditions of the multi-stage crusher according to the correction coefficient to obtain the final working parameter conditions, and control the multi-stage crushing and screening of coal gangue according to the final working parameter conditions.

[0046] Compared with the prior art, the multi-stage crushing and screening control method and system of coal gangue in the embodiment of the present invention has the following beneficial effects:

[0047] The present invention can improve production efficiency, reduce energy consumption and improve equipment utilization by effectively controlling the working parameters of the multi-stage crusher, thereby reducing production costs;

[0048] The present invention can optimize the crushing effect by correcting the working parameter conditions and determining the correction coefficient according to the particle size data and the target particle size of the material, so that the crushed product can better meet the expected particle size requirements;

[0049] The present invention can realize the automatic operation of the multi-stage crusher by correcting and controlling the working parameter conditions, reduce human intervention, and improve the automation level of the production process;

[0050] By analyzing historical data and real-time data, the present invention can realize data-driven decision-making, help enterprises to make optimization adjustments based on objective data, and improve production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 Schematic diagram of the process structure of the multi-stage crushing and screening control method of coal gangue in an embodiment of the present invention;

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

[0053] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0054] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the platform or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

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

[0056] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technical personnel in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0057] like Figure 1 As shown, in an embodiment of the present application, a method for controlling multi-stage crushing and screening of coal gangue is provided, comprising: 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 raw material parameters affecting the crushing of coal gangue; S200: 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 coal gangue to obtain the crushing characteristic value of coal gangue; S300: determining the initial setting of the multi-stage crusher according to the crushing characteristic value of coal gangue; S400: screening the material obtained after crushing, and determining the particle size data and preset target particle size of the screened material; S500: analyzing the particle size data and target particle size of the material, and determining the correction coefficient of the working parameter conditions of the multi-stage crusher according to the analysis results; S600: 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 coal gangue according to the final working parameter conditions.

[0058] Furthermore, the present invention can improve production efficiency, reduce energy consumption and improve equipment utilization rate, thereby reducing production costs by effectively controlling the working parameters of the multi-stage crusher; the present invention can optimize the crushing effect by correcting the working parameter conditions and determining the correction coefficient according to the particle size data and the target particle size of the material, so that the crushed product better meets the expected particle size requirements; the present invention can realize the automatic operation of the multi-stage crusher by correcting and controlling the working parameter conditions, reduce human intervention, and improve the automation level of the production process; the present invention can realize data-driven decision-making by analyzing historical data and real-time data, and help enterprises to optimize and adjust according to objective data, thereby improving production efficiency and product quality.

[0059] In an embodiment of the present application, a method for controlling multi-stage crushing and screening of coal gangue is provided, wherein historical raw material data and historical crushing data of coal gangue are obtained, and the historical raw material data and historical crushing data are analyzed to determine the raw material parameters that affect the crushing of coal gangue, including: dividing the historical raw material data into several raw material parameter data groups according to parameter type, and analyzing the correlation between each raw material parameter data group and the historical crushing data; selecting the raw material parameter data group whose correlation is greater than a preset value, and determining it as the raw material parameter that affects 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, water content, hardness and other parameter types; for each raw material parameter data group, the correlation between the parameter and the historical crushing data is evaluated through statistical analysis and correlation analysis methods to determine which raw material parameters may affect the crushing process of coal gangue; a preset correlation threshold is set to screen out the raw material parameter data groups with significant correlation with the crushing process, and the raw material parameter data groups with correlation greater than the preset value are selected. These parameters are determined as key raw material parameters that affect coal gangue crushing and may need to be focused on and controlled in subsequent processes. This step accurately determines the key raw material parameters that affect coal gangue crushing by analyzing historical data, avoiding blind trial and error and waste of resources; based on the data analysis results, data-driven decision-making can be achieved to help enterprises adjust process flow and control parameters more scientifically, improve production efficiency and product quality; after determining the key raw material parameters, the production process can be controlled more accurately, production stability can be improved, product quality fluctuations can be reduced, and customer satisfaction can be improved.

[0061] In an embodiment of the present application, a multi-stage crushing and screening control method for coal gangue is provided, wherein raw material parameter data corresponding to the current coal gangue is obtained, 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: obtaining the raw material parameter data corresponding to the 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 the average value difference; evaluating and valuing the average value difference to obtain the data characteristic evaluation value corresponding to each raw material parameter; determining the correlation corresponding to each raw material parameter, and calculating the sum of the correlations corresponding to all raw material parameters to obtain the total correlation; respectively calculating the ratio of the correlation corresponding to each raw material parameter to the total correlation to respectively obtain the weight corresponding to each raw material parameter; 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 gangue are obtained, such as particle size, water content, hardness, etc.; for each raw material parameter data, its average value is calculated, and compared with the preset standard average value to obtain the average value difference, which is used to evaluate the degree of deviation of the data from the standard; according to the average value difference, each raw material parameter data is evaluated to determine its data characteristics; the correlation corresponding to each raw material parameter is determined, and the total correlation is calculated, and then the weight corresponding to each raw material parameter is calculated, that is, the ratio of the correlation of each parameter to the total correlation, which is used to measure the influence of each parameter on the crushing of gangue; the data characteristic evaluation value corresponding to each raw material parameter and the weight are weightedly added to obtain the crushing characteristic value of gangue, which comprehensively considers the data characteristics of each raw material parameter and the weight of its influence on the crushing of gangue. This step can fully understand the data characteristics of each raw material parameter by calculating the difference in mean values ​​and evaluating the data characteristics, which helps to identify the key factors in the crushing process of coal gangue; by calculating the correlation and weight, the influence of each raw material parameter on the crushing of coal gangue can be determined, providing a basis for subsequent process adjustments; by calculating the crushing characteristic value, the crushing characteristics of coal gangue can be comprehensively evaluated to help optimize the production process and improve product quality; based on the analysis and evaluation of the data, data-driven decision-making can be achieved to improve the scientificity and efficiency of the production process.

[0063] In an embodiment of the present application, a method for controlling multi-stage crushing and screening of coal gangue is provided, wherein the initial working parameter conditions of the multi-stage crusher are determined according to the crushing characteristic value of the coal gangue, and the multi-stage crusher is controlled to operate according to the initial working parameter conditions, including: obtaining the crushing characteristic value △P of the coal gangue and a preset crushing characteristic preset value P0, and determining a preset preset difference P1, a preset difference P2, a third preset difference P3 and a fourth preset difference P4, and P1<P2<P3<P4; presetting a preset working condition A1 (a1, b1), a preset working condition A2 (a2, b2), a third preset working condition A3 (a3, b3) and a fourth preset working condition A4 (a4, b4), wherein a1-a4 are respectively to the fourth preset crushing speed, and a1<a2<a3<a4, b1-b4 are respectively to the fourth preset crushing speed. Crushing power, b1<b2<b3<b4; according to the difference between the crushing characteristic value △P and the preset crushing characteristic preset value P0, select the preset working condition Ai as the initial working parameter condition of the multi-stage crusher; when △P-P0≤P1, select the preset working condition A1 as the initial working parameter condition of the multi-stage crusher; when P1<△P-P0≤P2, select the preset working condition A2 as the initial working parameter condition of the multi-stage crusher; when P2<△P-P0≤P3, select the third preset working condition A3 as the initial working parameter condition of the multi-stage crusher; when P3<△P-P0≤P4, select the fourth preset working condition A4 as the initial working parameter condition of the multi-stage crusher; according to which preset working condition Ai (ai, bi) is selected as the initial working parameter condition of the multi-stage crusher, the multi-stage crusher is controlled to operate.

[0064] Specifically, the preset value P0 of the crushing characteristic and the preset difference values ​​P1, P2, P3 and P4 are preset, where 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, where a1-a4 is the crushing rotation speed, b1-b4 is the crushing power, and a certain increasing relationship is satisfied; according to the difference between the crushing characteristic value △P 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 to ensure that it performs the crushing process of coal gangue under the appropriate working parameter conditions. This step intelligently selects the most suitable working conditions according to the difference between the crushing characteristic value and the preset value, realizes intelligent regulation of the multi-stage crusher, and 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 enhance the production capacity; the working conditions are automatically selected according to the crushing characteristic value, which reduces the need for human intervention, reduces the burden on operators, and improves the level of production automation.

[0065] In an embodiment of the present application, a multi-stage crushing and screening control method for coal gangue is provided, wherein the material obtained after crushing is screened, and the particle size data and preset target particle size of the screened material are determined, including: a multi-stage crusher crushes the coal gangue according to initial working parameter conditions, and screens the material obtained after crushing; obtains the particle size data of the screened material, and determines the preset target particle size required for the coal gangue after crushing and screening.

[0066] Specifically, in a multi-stage crusher, after the gangue is crushed, materials of different particle sizes are obtained. These materials are then sent to the screening equipment, screened according to the size of the particle size, and the materials are divided into different particle size levels; the particle size analysis of the screened materials is carried out to obtain the data of each particle size level; according to production needs and product standards, the target particle size required for the gangue after crushing and screening is pre-set. This step can achieve the control and monitoring of product quality by screening the crushed materials and obtaining the particle size data to ensure the production of products that meet the requirements; according to the setting of the target particle size, the working parameters of the crusher can be adjusted, the production process can be optimized, and the production efficiency and product quality can be improved; by accurately controlling the crushing and screening process of the gangue, the generation of waste can be reduced, the production cost can be reduced, and the resource utilization rate can be improved; using automated equipment for the crushing and screening process can improve the automation of the production line, reduce manual intervention, and reduce operating costs.

[0067] In an embodiment of the present application, a method for controlling multi-stage crushing and screening of coal gangue is provided, wherein the particle size data and target particle size of the material are analyzed, and the correction coefficient of the working parameter conditions of the multi-stage crusher is determined according to the analysis results, including: determining the data in the particle size data of the material that is larger than the target particle size, and calculating the average value of the data in the particle size data of the material that is larger than the target particle size; pre-setting a correction coefficient-average value interval correspondence relationship, wherein the correction coefficient-average value interval correspondence relationship is associated with a corresponding correction coefficient for each average value interval; determining the average value of the particle size data larger than the target particle size in the material particle size data, and based on the mapping relationship between the average value interval to which the average value belongs within the correction coefficient-average value interval correspondence relationship, selecting the correction coefficient corresponding to the average value interval as the correction coefficient corresponding to the working parameter conditions of the multi-stage crusher.

[0068] Specifically, data larger than the target particle size are screened out from the particle size data of the material, and these data represent particles that need to be further processed; the data larger than the target particle size are averaged to obtain the average value of these data; the correction coefficient-average value interval correspondence is pre-set, that is, corresponding correction coefficients are set for different average value intervals, and these correction coefficients are used to adjust the working parameter conditions of the multi-stage crusher; according to the average value interval to which the average value of the data larger than the target particle size belongs, the corresponding correction coefficient is found in the correction coefficient-average value interval correspondence, and it is associated with the working parameter conditions of the multi-stage crusher. This step realizes the precise adjustment of the working parameter conditions of the multi-stage crusher by calculating the average value of the data larger than the target particle size and mapping it to the correction coefficient, so as to make it more suitable for the actual crushing situation; according to the correction coefficient-average value interval correspondence, the correction coefficient is automatically selected and applied, the automation degree of the production line is improved, and manual intervention is reduced; by dynamically adjusting the working parameter conditions, the multi-stage crusher can be more efficiently crushed when processing data larger than the target particle size, thereby improving production efficiency; adjusting the working parameter conditions can make the crushed material more in line with the target particle size requirements, thereby optimizing product quality and improving customer satisfaction.

[0069] In an embodiment of the present application, a method for controlling multi-stage crushing and screening of coal gangue is provided, in which the initial working parameter conditions of the multi-stage crusher are corrected according to the correction coefficient to obtain the final working parameter conditions, and the multi-stage crushing and screening of coal gangue are controlled according to the final working parameter conditions, including: obtaining the correction coefficient mi of the working parameter conditions of the multi-stage crusher, and correcting the initial working parameter conditions Ai (ai, bi) of the multi-stage crusher according to the correction coefficient mi to obtain the final working parameter conditions Ai (ai*mi, bi*mi); controlling the multi-stage crushing and screening of coal gangue according to the final working parameter conditions Ai (ai*mi, bi*mi).

[0070] Specifically, the correction coefficient mi is calculated based on the correction coefficient-average value interval correspondence mentioned above, and is used to adjust the working parameter conditions of the multi-stage crusher; the final working parameter conditions Ai (ai*mi, bi*mi) are obtained by multiplying the initial working parameter conditions Ai (ai, bi) by the correction coefficient mi, 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 coal gangue. These parameters will affect the operation mode of the crusher, the crushing efficiency and the particle size of the final product. This step achieves precise control of the multi-stage crusher by correcting the working parameter conditions, so that it can better adapt to the actual crushing needs and improve the crushing efficiency and product quality; the application of the correction coefficient allows the working parameters to be flexibly adjusted according to the actual situation to adapt to different particle size requirements and changes in coal gangue characteristics; by controlling the multi-stage crushing and screening of coal gangue according to the final working parameter conditions, the production process can be optimized, production efficiency can be improved, and costs can be reduced; precise control of the crushing and screening process of coal gangue can improve the particle size consistency and quality stability of the product to meet customer needs

[0071] like Figure 2 As shown, in an embodiment of the present application, a coal gangue multi-stage crushing and screening control system is provided, including: an acquisition module, used to acquire 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 that affect the crushing of coal gangue; a calculation module, used to acquire the 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 that affect the crushing of coal gangue to obtain the crushing characteristic value of coal gangue; a control module, used to determine the initial setting of the multi-stage crusher according to the crushing characteristic value of coal gangue The invention discloses a method for controlling the operation of the multi-stage crusher by using a plurality of modules, a determining module, and a method for controlling the operation of the multi-stage crusher according to the initial working parameter conditions; a determining module, for screening the material obtained after crushing, and determining the particle size data and the preset target particle size of the screened material; an analyzing module, for analyzing the particle size data and the target particle size of the material, and determining the correction coefficient of the working parameter conditions of the multi-stage crusher according to the analysis result; a correcting module, for correcting the initial working parameter conditions of the multi-stage crusher according to the correction coefficient, obtaining the final working parameter conditions, and controlling the multi-stage crushing and screening of coal gangue according to the final working parameter conditions.

[0072] In summary, the embodiment of the present invention provides a method and system for controlling multi-stage crushing and screening of coal gangue, which includes: obtaining and analyzing historical raw material data and historical crushing data of coal gangue, determining raw material parameters that affect coal gangue crushing; obtaining raw material parameter data corresponding to the current coal gangue, and analyzing and calculating it according to the raw material parameters that affect coal gangue crushing to obtain crushing characteristic values; determining the initial working parameter conditions of the multi-stage crusher according to the crushing characteristic values, and operating it; obtaining the particle size data and the preset target particle size of the material after crushing and screening, and analyzing and determining the correction coefficient; correcting the initial working parameter conditions according to the correction coefficient to obtain the final working parameter conditions to control the multi-stage crushing and screening of coal gangue. The present invention 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 achieve the optimal control of the crushing and screening process of coal gangue, thereby obtaining crushed materials that meet the requirements.

[0073] Finally, it should be noted that: Obviously, a person skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the present invention and its equivalent technology, the present invention is also intended to include these modifications and variations.

[0074] The above is only an example of implementation of the present invention, but it cannot be used to limit the scope of the present invention. Any structural changes made according to the present invention, as long as they do not lose the essence of the present invention, should be regarded as falling within the scope of protection of the present invention and being restricted. Technical personnel in the relevant technical field can clearly understand that for the convenience and simplicity of description, the specific working process and related instructions of the platform described above can refer to the corresponding process in the aforementioned platform embodiment, and will not be repeated here.

[0075] The term "comprises" or any other similar term is intended to cover a non-exclusive inclusion such that a process, platform, article, or apparatus / platform that includes a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, platform, article, or apparatus / platform.

[0076] So far, the technical solutions of the present invention have been described in conjunction with the further embodiments shown in the accompanying drawings. However, it is easy for a person skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to closely related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A method for controlling multi-stage crushing and screening of coal gangue, characterized in that: include: Obtain historical raw material data and historical crushing data of coal gangue, analyze the historical raw material data and historical crushing data, and determine the raw material parameters that affect the crushing of coal gangue; Obtain the raw material parameter data corresponding to the current gangue, and analyze and calculate the raw material parameter data according to the raw material parameters that affect the crushing of the gangue to obtain the crushing characteristic value of the gangue; Determine the initial working parameter conditions of the multi-stage crusher according to the crushing characteristic value of the gangue, and control the multi-stage crusher to operate according to the initial working parameter conditions; Screening the material obtained after crushing, and determining the particle size data of the screened material and the preset target particle size; Analyze the particle size data and target particle size of the material, and determine the correction coefficient of the working parameter conditions of the multi-stage crusher based on the analysis results; The initial working parameter conditions of the multi-stage crusher are corrected according to the correction coefficient to obtain the final working parameter conditions, and the multi-stage crushing and screening of coal gangue are controlled according to the final working parameter conditions.

2. A method for controlling multi-stage crushing and screening of coal gangue according to claim 1, characterized in that: The obtaining of 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 the crushing of coal gangue include: Divide the historical raw material data into several raw material parameter data groups according to parameter types, and analyze the correlation between each raw material parameter data group and the historical crushing data; The raw material parameter data group with a correlation greater than a preset value is selected and determined as the raw material parameter affecting the crushing of coal gangue.

3. A method for controlling multi-stage crushing and screening of coal gangue according to claim 2, characterized in that: The raw material parameter data corresponding to the current gangue is obtained, and the raw material parameter data is analyzed and calculated according to the raw material parameters affecting the crushing of the gangue to obtain the crushing characteristic value of the gangue, including: 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; Calculate the average value of the data corresponding to each raw material parameter, and calculate 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 the average value difference; The average value difference is evaluated and the data characteristic evaluation value corresponding to each raw material parameter is obtained; Determine the correlation corresponding to each raw material parameter, and calculate the sum of the correlations corresponding to all raw material parameters to obtain a total correlation; Calculate the ratio of the correlation degree corresponding to each raw material parameter to the total correlation degree respectively, and obtain the weight corresponding to each raw material parameter respectively; The data characteristic evaluation value corresponding to each raw material parameter is weightedly added to the weight to obtain the crushing characteristic value of the coal gangue.

4. A method for controlling multi-stage crushing and screening of coal gangue according to claim 3, 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, includes: Obtaining the crushing characteristic value △P of the coal gangue and the preset crushing characteristic preset value P0, and determining the preset preset difference P1, the preset difference P2, the third preset difference P3 and the fourth preset difference P4, and P1<P2<P3<P4; presetting the preset working condition A1 (a1, b1), the preset working condition A2 (a2, b2), the third preset working condition A3 (a3, b3) and the fourth preset working condition A4 (a4, b4), wherein a1-a4 are respectively to the fourth preset crushing rotation speed, and a1<a2<a3<a4, b1-b4 are respectively to the fourth preset crushing power, and b1<b2<b3<b4; According to the difference between the crushing characteristic value △P 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; When △P-P0≤P1, the preset working condition A1 is selected as the initial working parameter condition of the multi-stage crusher; When P1<△P-P0≤P2, the 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; The multi-stage crusher is controlled to operate according to the selected preset working condition Ai (ai, bi) as the initial working parameter condition of the multi-stage crusher.

5. A method for controlling multi-stage crushing and screening of coal gangue according to claim 4, characterized in that: The method of screening the material obtained after crushing and determining the particle size data of the screened material and the preset target particle size includes: The multi-stage crusher crushes the gangue according to the initial working parameter conditions and screens the crushed materials; Obtain the particle size data of the screened material and determine the preset target particle size required for the gangue after crushing and screening.

6. A method for controlling multi-stage crushing and screening of coal gangue according to claim 5, characterized in that: The particle size data and target particle size of the material are analyzed, and the correction coefficient of the working parameter conditions of the multi-stage crusher is determined according to the analysis results, including: Determine the data that are larger than the target particle size in the particle size data of the material, and calculate the average value of the data that are larger than the target particle size in the particle size data of the material; A correction coefficient-average value interval correspondence relationship is preset, wherein the correction coefficient-average value interval correspondence relationship is associated with a corresponding correction coefficient for each average value interval; The average value of the particle size data larger than the target particle size in the material particle size data is determined, and based on the mapping relationship between the average value interval to which the average value belongs in the correction coefficient-average value interval correspondence relationship, 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.

7. A method for controlling multi-stage crushing and screening of coal gangue according to claim 6, characterized in that: The method of 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 coal gangue according to the final working parameter conditions, includes: Obtain the correction coefficient mi of the working parameter condition of the multi-stage crusher, and correct the initial working parameter condition Ai (ai, bi) of the multi-stage crusher according to the correction coefficient mi, so as to obtain the final working parameter condition Ai (ai * mi, bi * mi); The multi-stage crushing and screening of coal gangue are controlled according to the final working parameter conditions Ai (ai*mi, bi*mi).

8. A multi-stage crushing and screening control system for coal gangue, characterized in that: include: An acquisition module is used to acquire 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 that affect the crushing of coal gangue; The calculation module is used to obtain the raw material parameter data corresponding to the current gangue, and analyze and calculate the raw material parameter data according to the raw material parameters that affect the crushing of the gangue to obtain the crushing characteristic value of the gangue; A control module, used to determine the 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; A determination module is used to screen the material obtained after crushing and determine the particle size data of the screened material and a preset target particle size; An analysis module is used to analyze the particle size data and target particle size of the material, and determine the correction coefficient of the working parameter conditions of the multi-stage crusher according to the analysis results; The correction module is used to correct the initial working parameter conditions of the multi-stage crusher according to the correction coefficient to obtain the final working parameter conditions, and control the multi-stage crushing and screening of coal gangue according to the final working parameter conditions.

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