Production control method, processor and production equipment for manufactured sand

Abstract

The present invention relates to the technical field of construction machinery, and discloses a production control method, a processor and a production device for manufactured sand. The method includes: obtaining a model relationship of the water addition flow rate, the moisture content of the finished wet sand, and the real-time effective power when the crusher is working under load; determining the real-time effective power when the crusher is working under load; receiving the set moisture content; determining the real-time flow rate of water addition according to the real-time effective power, the set moisture content and the model relationship; adding water to the finished dry sand based on the real-time flow rate to make the finished wet sand of manufactured sand. By detecting the real-time effective power of the crusher, the flow value of the finished dry sand is sensed in real time, and combined with the set moisture content, the actual required water addition flow rate is accurately calculated. The real-time flow rate of water addition is adjusted in real time according to the real-time effective power of the crusher and the required moisture content, so that the actual moisture content of the finally produced finished wet sand more conforms to the demand setting, and for the control of the moisture content, the accuracy is higher and more stable.

Description

Technical Field

[0001] The present invention relates to the technical field of construction machinery, and particularly to a production control method, a processor and a production device for manufactured sand. Background Art

[0002] Manufactured sand refers to sand processed by a sand making machine and other auxiliary equipment. The finished product is more regular and can be processed into sand of different rules and sizes according to different process requirements, which can better meet daily needs. Professional equipment is required to produce qualified and applicable sand and gravel. In the dry production process of manufactured sand, a wet mixer is generally used to humidify and stir the manufactured sand material, and a certain moisture content is contained in the manufactured sand by adding water and mixing. The moisture content is an important index for the quality of manufactured sand. If the moisture content is too low, it is easy to cause dust and segregation of the manufactured sand; if the moisture content is too high, it will cause the sand to cake. The unstable fluctuation of the moisture content of the manufactured sand will also affect the quality and service life of concrete.

[0003] At present, the sand production line is mainly divided into several stages, and a constant water supply is set in each stage, resulting in difficulty in controlling the moisture content of the finished sand and poor quality of the manufactured sand. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, embodiments of the present invention provide a production control method, a processor and a production device for manufactured sand.

[0005] To achieve the above object, a first aspect of the present invention provides a production control method for manufactured sand, including:

[0006] Obtaining the model relationship between the water addition flow rate, the moisture content of the finished wet sand, and the real-time effective power during the operation of the crusher under load;

[0007] Determining the real-time effective power during the operation of the crusher under load;

[0008] Receiving the set moisture content;

[0009] Determining the real-time water addition flow rate according to the real-time effective power, the set moisture content, and the model relationship;

[0010] Adding water to the finished dry sand based on the real-time flow rate to produce the finished wet sand of the manufactured sand.

[0011] In the embodiments of the present invention, the model relationship is pre-established in the following manner:

[0012] Determining the first relationship between the mixture flow rate and the real-time effective power during the operation of the crusher under load;

[0013] Determining the second relationship between the mixture flow rate and the finished product flow rate;

[0014] Determine the third relationship between the finished product material flow rate and the finished dry sand flow rate;

[0015] Determine the fourth relationship between the water content of the finished wet sand, the water addition flow rate, and the finished dry sand flow rate;

[0016] Establish a model relationship based on the first relationship, the second relationship, the third relationship, and the fourth relationship.

[0017] In an embodiment of the present invention, the first relationship includes the following formula:

[0018]

[0019] Wherein, Q is the mixed material flow rate, P1 is the real-time effective power when the crusher is working with load, P0 is the effective power when the crusher is working without load, and V is the material speed.

[0020] In an embodiment of the present invention, the second relationship includes the following formula:

[0021] Q1 = k1ηQ

[0022] Wherein, Q1 is the finished product material flow rate, k1 is the sand production rate of the crusher, and η is the screening efficiency of the screening machine. In an embodiment of the present invention, the third relationship includes the following formula:

[0023] Q3 = (1 - n)Q1

[0024] Wherein, Q3 is the finished dry sand flow rate, and n is the proportion of the powder extracted by the powder separator in the finished product material.

[0025] In an embodiment of the present invention, the fourth relationship includes the following formula:

[0026]

[0027] Wherein, q is the water addition flow rate, and A is the water content of the finished wet sand.

[0028] In an embodiment of the present invention, the production control method further includes:

[0029] Pre-determine the time difference between the material entering the crusher and entering the wet mixer;

[0030] Delay the water addition time to the time corresponding to the real-time effective power when the crusher is working with load plus the time difference.

[0031] A second aspect of the present invention provides a processor configured to execute the above-mentioned production control method for manufactured sand.

[0032] A third aspect of the present invention provides a production device for manufactured sand, including:

[0033] A crusher for crushing materials;

[0034] A wattmeter for detecting the real-time effective power when the crusher is working under load and the effective power when the crusher is working without load;

[0035] A screening machine for screening materials that meet the screening particle size to form finished materials;

[0036] A powder separator for removing part of the stone powder from the finished materials to form finished dry sand;

[0037] A wet mixing machine for humidifying and stirring the finished dry sand to form finished wet sand;

[0038] A variable-frequency water pump for adjusting the real-time flow rate of water added to the wet mixing machine according to the real-time effective power when the crusher is working under load and the moisture content of the finished wet sand; and

[0039] The above-mentioned processor.

[0040] The fourth aspect of the present invention provides a machine-readable storage medium, on which instructions are stored, and the instructions are used to cause the machine to execute the above-mentioned production control method for manufactured sand.

[0041] In an embodiment of the present invention, a production control method for manufactured sand is provided. A model relationship among the water flow rate, the moisture content of the finished wet sand, and the real-time effective power when the crusher is working under load is established in advance, and then the model relationship is obtained; the real-time effective power when the crusher is working under load is determined; the set moisture content is received; according to the real-time effective power, the set moisture content, and the model relationship, the real-time flow rate of water added is determined; water is added to the finished dry sand based on the real-time flow rate to form the finished wet sand of the manufactured sand. In this technical solution, the actual flow rate value of the finished dry sand can be sensed in real time by detecting the real-time effective power when the crusher is working under load. Combining with the set moisture content, the actual required water flow rate can be accurately calculated; that is, the real-time flow rate of water added to the wet mixing machine can be adjusted in real time according to the real-time effective power when the crusher is working under load and the required moisture content, so that the actual moisture content of the finally formed finished wet sand more conforms to the demand setting, and for the control of the moisture content, the accuracy is higher and more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The drawings are used to provide a further understanding of the embodiments of the present invention, and constitute a part of the specification. They are used together with the following specific embodiments to explain the embodiments of the present invention, but do not constitute a limitation to the embodiments of the present invention. In the drawings:

[0043] Figure 1 Schematically shows a flowchart of a production control method for manufactured sand according to an embodiment of the present invention;

[0044] Figure 2The schematic diagram of the dry sand making process flow according to an embodiment of the present invention is schematically shown. Detailed Embodiment

[0045] The following will describe in detail the detailed embodiments of the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the detailed embodiments described herein are only for the purpose of illustration and explanation of the embodiments of the present invention, and are not used to limit the embodiments of the present invention.

[0046] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present application, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the accompanying drawings). If this specific posture changes, then such directional indications will also change accordingly.

[0047] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0048] Machine-made sand refers to the sand processed by sand making machines and other auxiliary equipment. The finished product is more regular and can be processed into sand of different rules and sizes according to different process requirements, which can better meet daily needs; professional equipment is required to produce qualified and applicable sand and gravel. In the dry production and processing process of machine-made sand, generally a wet mixing machine is needed to humidify and stir the machine-made sand material, and by adding water and mixing, the machine-made sand contains a certain moisture content. The moisture content is an important index for the quality of machine-made sand. If the moisture content is too low, it is easy to cause dust and segregation of the machine-made sand; if the moisture content is too high, it will cause the sand to cake. If the moisture content of the machine-made sand fluctuates unstably, it will also affect the quality and lifespan of the concrete. Therefore, before using the machine-made sand, it is necessary to accurately control the incoming moisture content.

[0049] The control of the water content is generally achieved by controlling the amount of water added to the wet mixer, and the amount of water added is adjusted according to the sand production. Since the production volume of the finished sand varies greatly during the startup and shutdown processes of the sand production line, the production volume of the sand changes relatively little during normal production. Currently, mainly for the above three stages, three water addition amounts are adopted to match, so as to achieve the purpose of controlling the water content of the finished sand. When the production line is in the startup stage, the water pump runs to supply water at the first frequency; when the main machine reaches the preset current, it is considered that the production is in the stable stage, and the water pump starts to supply water at the second frequency; when the production line stops feeding, the production line is in the shutdown stage, the water pump supplies water at the third frequency, and after reaching the set working time, the water pump stops supplying water. Among them, both the first frequency and the third frequency are less than the second frequency.

[0050] During the startup and shutdown stages of the sand production line, the production volume of the finished sand is a process of gradually increasing or decreasing, and the production volume of the finished sand in the stable stage also fluctuates in real time. Therefore, the existing technology adopts the method of setting a constant water supply amount in stages, which cannot match the situation where the production volume of the finished sand fluctuates in real time. As a result, the fluctuation of the water content of the finished sand is unstable, making it difficult to control the water content of the finished sand and affecting the quality of the manufactured sand.

[0051] To solve the above existing problems, Figure 1 The flowchart of the production control method for manufactured sand according to an embodiment of the present invention is schematically shown, as Figure 1 shown. In an embodiment of the present invention, a production control method for manufactured sand is provided, including the following steps:

[0052] Step 101, obtain the model relationship among the pre-established water addition flow rate, the water content of the finished wet sand, and the real-time effective power when the crusher is working under load;

[0053] Step 102, determine the real-time effective power when the crusher is working under load;

[0054] Step 103, receive the set water content;

[0055] Step 104, determine the real-time flow rate of water addition according to the real-time effective power, the set water content, and the model relationship;

[0056] Step 105, add water to the finished dry sand based on the real-time flow rate to make the finished wet sand of the manufactured sand.

[0057] In the embodiments of the present invention, the actual flow value of the finished dry sand can be sensed in real time by detecting the real-time effective power when the crusher is working under load. Combining the set moisture content, the actual water addition flow rate required can be accurately calculated. That is to say, the real-time flow rate of water addition in the wetting mixer can be adjusted in real time according to the real-time effective power when the crusher is working under load and the required moisture content, so that the actual moisture content of the finally produced finished wet sand is more in line with the required setting, and the control of the moisture content is more accurate and stable.

[0058] The control of the moisture content of the finished wet sand mainly controls the water addition amount, and the water addition amount is mainly determined by the discharge amount of the finished dry sand and the required moisture content. Therefore, obtaining the real-time value of the discharge amount of the finished dry sand, that is, obtaining the real-time water addition amount of the wetting mixer, so as to achieve the purpose of accurate control of the moisture content. In the embodiments of the present invention, the real-time discharge amount of the finished dry sand is calculated by the useful power of the crusher, and then the water addition amount of the wetting mixer is calculated in real time according to the target moisture content, so as to realize the real-time adjustment of the water addition amount according to the change of the discharge amount and ensure the stability of the moisture content of the manufactured sand.

[0059] Figure 2 Schematically shows a schematic diagram of the dry sand making process according to an embodiment of the present invention, which can be seen Figure 2 , and the dry sand making process is generally as Figure 2 shown. After the raw material crushed stones pass through the crusher (impact type), they then pass through the screening machine. The oversize materials (return materials) are returned and mixed with the raw material crushed stones and then crushed again. The materials that meet the screening particle size are transported out as finished products. After the finished products pass through the powder separator to remove part of the stone powder, the remaining finished dry sand is then wetted with water to make the final product (i.e., the finished wet sand).

[0060] In the embodiments of the present invention, the model relationship among the water addition flow rate, the moisture content of the finished wet sand, and the real-time effective power when the crusher is working under load is pre-established in the following manner:

[0061] Determine the first relationship between the mixed material flow rate and the real-time effective power when the crusher is working under load;

[0062] Determine the second relationship between the mixed material flow rate and the finished product flow rate;

[0063] Determine the third relationship between the finished product flow rate and the finished dry sand flow rate;

[0064] Determine the fourth relationship among the moisture content of the finished wet sand, the water addition flow rate, and the finished dry sand flow rate;

[0065] Establish a model relationship according to the first relationship, the second relationship, the third relationship, and the fourth relationship.

[0066] In the embodiments of the present invention, the returned material can be understood as the oversize material, that is, the material that does not meet the screening particle size. The mixed material can be understood as the mixture of the returned material and the raw crushed stone. For the relationship between the flow rate of the above-mentioned mixed material and the useful work of the impact crusher, according to the working principle of the impact crusher, the work done by the impact crusher motor is converted into the kinetic energy of the material, and the relationship (i.e., the first relationship) between the useful power of the impact crusher (that is, understood as the real-time effective power when the crusher is working under load) and the flow rate of the mixed material can be obtained as follows:

[0067]

[0068] Wherein: P1 is the real-time effective power when the crusher is working under load, with the unit of KW; P0 is the effective power when the crusher is working without load, with the unit of KW; Q is the flow rate of the mixed material, with the unit of kg / s; V is the material velocity, with the unit of m / s, which is equal to the motor speed * transmission ratio. According to formula (1), it can be obtained that:

[0069]

[0070] In the embodiments of the present invention, the relationship (i.e., the second relationship) between the flow rate of the mixed material and the flow rate of the finished product material is as follows:

[0071] Q1 = k1ηQ Formula (3)

[0072] Wherein, Q1 is the flow rate of the finished product material, with the unit of kg / s; k1 is the sand formation rate of the crusher; η is the screening efficiency of the vibrating screen (i.e., Figure 2 the screening machine in

[0073] Regarding the relationship between the flow rate of the finished product material and the flow rate of the finished dry sand (i.e., the third relationship). The function of the powder separator is to extract part of the stone powder from the finished product material, and the amount of stone powder extracted is related to the air volume and air pressure of the powder separator. The greater the air volume and air pressure, the more powder is extracted. The coefficient n represents the proportion of the powder extracted by the powder separator in the finished product material, that is, there is:

[0074] Q2 = nQ1

[0075] Q3 = (1 - n)Q1 Formula (4)

[0076] Wherein, Q1 is the flow rate of the finished product material, with the unit of kg / s; Q2 is the flow rate of the stone powder, with the unit of kg / s; Q3 is the flow rate of the finished dry sand, with the unit of kg / s.

[0077] The calculation of the water addition flow rate is introduced below. If the target moisture content of the finished wet sand is A and the water addition flow rate is q, then there is formula (5):

[0078]

[0079] According to formula (5), formula (6) can be obtained:

[0080]

[0081] Substitute equations (2), (3) and (4) into equation (6), then equation (7) is obtained:

[0082]

[0083] Where A is the target moisture content of the finished wet sand;

[0084] k1 is the sand production rate of the crusher, which depends on the hardness of the raw material and is generally 0.25 - 0.35;

[0085] η is the screening efficiency of the vibrating screen (i.e., the screening machine in Figure 2 ), and the screening efficiency of different types of vibrating screens is generally 0.8 - 0.9;

[0086] n represents the proportion of the powder extracted by the powder separator in the finished material, which is generally 0 - 0.3 according to different air volumes and air pressures;

[0087] P1 is the real-time effective power when the crusher is working under load, which can be detected in real time by a power meter;

[0088] P0 is the effective power when the crusher is working without load, which can be detected by a power meter;

[0089] V is the material velocity, which varies with different manufacturers and models and is generally 60 - 85 m / s.

[0090] Generally, after the construction of the general mechanism sand production line is completed and the equipment such as crushers, dust collectors (i.e., powder separators), and vibrating screens (i.e., screening machines) are installed and finalized, the values of k1, η, n, P 0、 V, etc. in equation (7) are basically determined. Then, the water addition flow value can be calculated based on the target moisture content A and the real-time effective power P1 when the crusher is working under load.

[0091] In one embodiment, the production control method further includes:

[0092] Pre-determine the time difference between the material entering the crusher and entering the wet mixing machine;

[0093] Delay the water addition time to the time corresponding to the real-time effective power when the crusher is working under load plus the time difference.

[0094] Due to the production process flow, there is a time difference between the time when the material passes through the crusher and the time when it enters the wet mixing machine. Therefore, in the actual production process flow, the current calculated value of the finished dry sand flow rate based on the power when the material enters the crusher is not equal to the actual flow rate of the finished dry sand entering the wet mixing machine at present. The time difference between the material entering the crusher and entering the wet mixing machine can be determined in advance, and the water addition time can be delayed to the time corresponding to the real-time effective power when the crusher is working under load plus the time difference. Exemplarily, if the time difference between the material entering the crusher and entering the wet mixing machine is t1, and the real-time effective power when the crusher is working under load at time t2 is P12, and the corresponding water addition flow rate calculated based on P12 is q1, then the water addition flow rate of the wet mixing machine is q1 at time t2 + t1. That is, the delay time should be calculated according to the actual situation of the process, and the calculated value of the water addition flow rate should be delayed.

[0095] After determining the water addition flow rate value, in one embodiment, a variable frequency water pump or an electric proportional valve can be used to adjust the water pump speed or the water valve opening in real time to ensure that the real-time flow rate meets the required water addition flow rate. In addition, in the embodiments of the present invention, the actual flow rate value of the finished dry sand is sensed in real time through the power of the crusher, which is also applicable to the start-up and shutdown stages of the production line, without the need to specifically distinguish the production stages of the production line, and the parameter setting is more convenient and the adaptability is stronger.

[0096] In the embodiments of the present invention, the calculation relationship between the useful power of the main machine and the mixture flow rate is derived; the calculation relationship between the water addition amount of the wet mixing machine and the useful power of the main machine is derived; and the real-time adjustment control of the water addition amount is realized through the relationship.

[0097] In the embodiments of the present invention, the actual flow rate value Q3 of the finished dry sand can be sensed in real time by detecting the real-time effective power P1 when the crusher is working under load. Combining with the set moisture content A, the actually required water addition flow rate q can be accurately calculated. That is to say, the real-time flow rate q of the water added to the wet mixing machine can be adjusted in real time according to the real-time effective power P1 when the crusher is working under load and the required moisture content A, so that the actual moisture content of the finally produced finished wet sand is more in line with the required setting, and the control of the moisture content is more accurate and stable.

[0098] The control of the moisture content of the finished wet sand mainly controls the water addition amount, and the water addition amount is mainly determined by the discharge amount of the finished dry sand and the required moisture content. Therefore, obtaining the real-time value of the discharge amount of the finished dry sand, that is, obtaining the real-time water addition amount of the wet mixing machine, so as to achieve the purpose of accurate control of the moisture content. In the embodiments of the present invention, the real-time discharge amount of the finished dry sand is calculated through the useful power of the crusher, and then the water addition amount of the wet mixing machine is calculated in real time according to the target moisture content, so as to realize the real-time adjustment of the water addition amount according to the change of the discharge amount and ensure the stability of the moisture content of the manufactured sand.

[0099] An embodiment of the present invention provides a processor configured to execute any one of the above-described embodiments of the production control method for manufactured sand.

[0100] Specifically, the processor may be configured to:

[0101] Obtain the pre-established model relationship among the water addition flow rate, the moisture content of the finished wet sand, and the real-time effective power during the crusher's loaded operation;

[0102] Determine the real-time effective power during the crusher's loaded operation;

[0103] Receive the set moisture content;

[0104] Determine the real-time water addition flow rate according to the real-time effective power, the set moisture content, and the model relationship;

[0105] Add water to the finished dry sand based on the real-time flow rate to produce the finished wet sand of manufactured sand.

[0106] In the embodiment of the present invention, the processor is configured to:

[0107] The model relationship is pre-established in the following manner:

[0108] Determine the first relationship between the mixture flow rate and the real-time effective power during the crusher's loaded operation;

[0109] Determine the second relationship between the mixture flow rate and the finished product flow rate;

[0110] Determine the third relationship between the finished product flow rate and the finished dry sand flow rate;

[0111] Determine the fourth relationship among the moisture content of the finished wet sand, the water addition flow rate, and the finished dry sand flow rate;

[0112] Establish the model relationship according to the first relationship, the second relationship, the third relationship, and the fourth relationship.

[0113] In the embodiment of the present invention, the processor is configured to:

[0114] The first relationship includes the following formula:

[0115]

[0116] Wherein, Q is the mixture flow rate, P1 is the real-time effective power during the crusher's loaded operation, P0 is the effective power during the crusher's no-load operation, and V is the material velocity.

[0117] In the embodiment of the present invention, the processor is configured to:

[0118] The second relationship includes the following formula:

[0119] Q1 = k1ηQ

[0120] Among them, Q1 is the flow rate of the finished product material, k1 is the sand production rate of the crusher, and η is the screening efficiency of the screening machine.

[0121] In an embodiment of the present invention, the processor is configured to:

[0122] The third relationship includes the following formula:

[0123] Q3 = (1 - n)Q1

[0124] Among them, Q3 is the flow rate of the finished dry sand, and n is the proportion of the powder extracted by the powder separator in the finished product material.

[0125] In an embodiment of the present invention, the processor is configured to:

[0126] The fourth relationship includes the following formula:

[0127]

[0128] Among them, q is the water addition flow rate, and A is the moisture content of the finished wet sand.

[0129] In an embodiment of the present invention, the processor is further configured to:

[0130] Pre-determine the time difference between the material entering the crusher and entering the wet mixing machine;

[0131] Delay the water addition time to the time corresponding to the real-time effective power when the crusher is working under load plus the time difference.

[0132] An embodiment of the present invention provides a production device for manufactured sand, including:

[0133] A crusher for crushing materials;

[0134] A power meter for detecting the real-time effective power when the crusher is working under load and the effective power when the crusher is working without load;

[0135] A screening machine for screening out materials meeting the screening particle size to form finished product materials;

[0136] A powder separator for removing part of the stone powder in the finished product material to form finished dry sand;

[0137] A wet mixing machine for humidifying and stirring the finished dry sand to form finished wet sand;

[0138] A variable-frequency water pump for adjusting the real-time water addition flow rate in the wet mixing machine according to the real-time effective power when the crusher is working under load and the moisture content of the finished wet sand; and

[0139] The above-mentioned processor.

[0140] An embodiment of the present invention provides a machine-readable storage medium, on which instructions are stored for causing a machine to execute the above-mentioned production control method for manufactured sand.

[0141] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0142] The present application is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, as well as the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate for implementing in the process Figure 1 a process or multiple processes and / or blocks Figure 1 a device for the functions specified in one block or multiple blocks.

[0143] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device, and the instruction device implements the functions specified in the process Figure 1 a process or multiple processes and / or blocks Figure 1 a device for the functions specified in one block or multiple blocks.

[0144] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process. Thus, the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in the process Figure 1 a process or multiple processes and / or blocks Figure 1 a device for the functions specified in one block or multiple blocks.

[0145] In a typical configuration, a computing device includes one or more processors (CPUs), an input / output interface, a network interface, and a memory.

[0146] The memory may include non-permanent memory in the form of computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0147] Computer-readable media includes both permanent and non-permanent, removable and non-removable media and can store information by any method or technology. The information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory media such as modulated data signals and carrier waves.

[0148] It should also be noted that the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0149] The above are only examples of the present application and are not used to limit the present application. For those skilled in the art, the present application may have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A production control method for manufactured sand, characterized in that, Including: Obtain the pre-established model relationship among the water addition flow rate, the water content of the finished wet sand, and the real-time effective power during the crusher's load operation. Determine the real-time effective power during the crusher's load operation. Receive the set water content of the finished wet sand. Determine the real-time water addition flow rate according to the real-time effective power during the crusher's load operation, the set water content of the finished wet sand, and the model relationship. Add water to the finished dry sand based on the real-time flow rate to produce the finished wet sand of the manufactured sand. The model relationship is pre-established in the following way: Determine the first relationship between the mixture flow rate and the real-time effective power during the crusher's load operation. Determine the second relationship between the mixture flow rate and the finished product flow rate. Determine the third relationship between the finished product flow rate and the finished dry sand flow rate. Determine the fourth relationship among the water content of the finished wet sand, the water addition flow rate, and the finished dry sand flow rate. Establish the model relationship according to the first relationship, the second relationship, the third relationship, and the fourth relationship.

2. The method according to claim 1, wherein The first relationship includes the following formula: = Where Q is the mixture flow rate, P1 is the real-time effective power during the crusher's load operation, P0 is the effective power during the crusher's no-load operation, and V is the material velocity.

3. The method according to claim 1, wherein The second relationship includes the following formula: Q1 = k1ηQ Where Q1 is the finished product flow rate, k1 is the sand production rate of the crusher, η is the screening efficiency of the screening machine, and Q is the mixture flow rate.

4. The method according to claim 1, characterized in that, The third relationship includes the following formula: Q3=(1 - n)Q1 Where Q3 is the finished dry sand flow rate, n is the proportion of the powder extracted by the powder separator in the finished product, and Q1 is the finished product flow rate.

5. The method according to claim 1, characterized in that, The fourth relationship includes the following formula: Where q is the water addition flow rate, A is the water content of the finished wet sand, and Q3 is the finished dry sand flow rate.

6. The method according to claim 1, wherein Also including: Pre-determine the time difference between the material entering the crusher and entering the wet mixing machine. Delay the water addition time to the time corresponding to the real-time effective power during the crusher's load operation plus the time difference.

7. A processor, characterized in that, Configured to execute the production control method for manufactured sand according to any one of claims 1 to 6.

8. A production device for manufactured sand, characterized in that, Including: A crusher for crushing materials. A power meter for detecting the real-time effective power during the crusher's load operation and the effective power during the crusher's no-load operation. A screening machine for screening out materials meeting the screening particle size to form a finished product. A powder separator for removing part of the stone powder from the finished product to form finished dry sand. A wet mixing machine for humidifying and stirring the finished dry sand to obtain finished wet sand. A variable-frequency water pump for adjusting the real-time water addition flow rate in the wet mixing machine according to the real-time effective power during the crusher's load operation and the water content of the finished wet sand; and The processor according to claim 7.

9. A machine-readable storage medium having instructions stored thereon, characterized in that, This instruction is used to cause the machine to execute the production control method for manufactured sand according to any one of claims 1 to 6.

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