A material receiving trough discharge system

Abstract

This application relates to the field of steel smelting technology and provides a material receiving trough discharge system, including a controller configured to perform the following steps: acquiring the flow rate threshold of the conveyor belt and the material quantity in any receiving trough; obtaining the discharge time based on the total material quantity in n receiving troughs and the flow rate threshold of the conveyor belt; obtaining the discharge rate of the corresponding feeding device based on the discharge time and the material quantity in any receiving trough; and controlling the discharge rate of the corresponding feeding device based on the discharge rate to perform the discharge operation. This application achieves simultaneous discharge of all receiving troughs and minimizes the time required to complete the discharge by rationally controlling the discharge flow rate of multiple receiving troughs and monitoring the remaining material quantity in the receiving troughs in real time. Furthermore, since new conveying equipment will unload during the discharge process, this application improves the utilization rate of the silo, optimizes the discharge performance, and reduces the energy consumption required for discharge by unloading from the receiving trough with the least material quantity.

Description

Technical Field

[0001] This application relates to the field of iron and steel smelting technology, and in particular to a material receiving trough discharge system. Background Technology

[0002] The steel industry is a fundamental industry of the national economy. In recent years, with the rapid development of the national economy, my country's steel industry has also shown a leapfrog development trend. Currently, steel production includes processes such as material discharge, sintering, pelletizing, and ironmaking. Among these, material discharge at the receiving equipment is the initial and crucial step in the steel production process. The materials required for steel production are transported to the receiving equipment via conveying equipment. During the material discharge process, the appropriate receiving device must be selected based on the amount of material stored in each receiving trough of the receiving equipment.

[0003] refer to Figure 1 This is a schematic diagram of the structure of a single receiving device in the prior art. Figure 1 It is known that the receiving device includes a receiving trough 1, a feeding device 2, and a conveyor belt 3. Specifically, when there is material in the receiving trough 1, the material is discharged through the feeding device 2 at the discharge port. The feeding device 2 is equipped with a belt scale and a discharge valve to control the discharge amount of the feeding device. The processing of the required material in the receiving equipment can be summarized as follows: (1) The material is discharged into the selected receiving trough 1; (2) The material is moved onto the conveyor belt 3 through the opened feeding device 2; (3) The material is then transported to the stockpile by the conveyor belt 3. Figure 2 As shown, the receiving equipment in actual production is composed of multiple receiving devices, and the materials in different receiving troughs 1 are all gathered on the conveyor belt 3 through their respective feeding devices 2.

[0004] At present, the material discharge method of the receiving equipment is as follows: as long as there is material in any receiving trough 1, the discharge operation is started, and each receiving device discharges material at a fixed flow rate while ensuring that the maximum load of the feeding device 2 and the conveyor belt 3 is not exceeded, until all the material in all receiving troughs 1 of the entire receiving equipment is emptied.

[0005] During the material discharge process, since the amount of material stored in the receiving trough of each receiving device may be different, it is easy for some receiving troughs to be emptied while a small number of receiving troughs continue to discharge material at a fixed flow rate. This causes all feeding devices and conveyor belts to still operate under low load, and there is also the phenomenon of some feeding devices running idle. This leads to the ineffective consumption of electrical energy of the belt equipment, accelerates the wear of the belt equipment itself, and does not meet the purpose of economic practicality. Summary of the Invention

[0006] In order to overcome the shortcomings of the existing technology, this application aims to provide a material receiving trough discharge system to solve the problems of ineffective power consumption and wear and tear of the belt conveyor caused by low load or empty operation of the belt conveyor during the traditional discharge process, thereby reducing the waste of human, material, financial and time resources and improving the efficiency of industrial production.

[0007] To achieve the above objectives, this application provides a material receiving trough discharge system applied to a material receiving device. The material receiving device includes n material receiving devices, each corresponding to a material receiving trough. The material receiving trough discharge system includes a controller, and the n material receiving devices are communicatively connected by the controller. The controller is configured to execute the following steps:

[0008] Obtain the flow threshold W of the conveyor belt pe and the amount of material M in any receiving trough i .

[0009] Based on the material storage capacity M of n receiving troughs i , and obtain the total inventory M.

[0010] Based on the total inventory M and the flow rate threshold W of the conveyor belt pe , and obtain the discharge time t.

[0011] Based on the discharge time t and the material storage M of any receiving trough i The discharge rate of the feeding device corresponding to any of the receiving troughs is obtained in the current cycle.

[0012] Based on the current discharge volume, control the discharge volume of the feeding device corresponding to any receiving trough to perform the discharge operation.

[0013] Furthermore, the following calculation model is applied to obtain the material discharge time:

[0014]

[0015] In the formula, t is the discharge time, and M is the discharge time. i W represents the amount of material stored in any receiving tank. pe This is the flow rate threshold for the transport belt.

[0016] Furthermore, the discharge volume in this cycle must be less than or equal to the discharge threshold of the feeding device, specifically expressed as follows:

[0017] 0 < W < W fe

[0018] In the formula, W is the discharge rate of the feeding device in this cycle, which is returned by the belt scale in the feeding device; W fe This is the discharge threshold of the feeding device.

[0019] Furthermore, the discharge threshold of the feeding device is set according to the power consumption of the equipment, and is generally taken as the critical point before the power consumption of the equipment increases sharply.

[0020] Furthermore, if the total amount of stored material is less than the flow threshold of the conveyor belt, the controller can be configured to perform the following steps:

[0021] Obtain the discharge threshold W of the feeding device fe .

[0022] Based on the material storage capacity of the n receiving troughs, determine the receiving trough X with the largest material storage capacity, and obtain the material storage capacity M of receiving trough X. X .

[0023] Based on the material storage capacity M of receiving tank X X and the discharge threshold W of the feeding device fe The second discharge time t2 is obtained.

[0024] Based on the second discharge time t2 and the material quantity M in any receiving trough i The discharge volume of the feeding device corresponding to any of the receiving troughs in this round is obtained.

[0025] Based on the discharge rate of this round, the discharge rate of the feeding device corresponding to any receiving trough is controlled to carry out the discharge operation.

[0026] Furthermore, when the amount of material in any of the receiving troughs reaches the preset value of the receiving trough, the controller issues a full trough prompt.

[0027] Furthermore, when all n receiving troughs are full, the controller can also be configured to execute the following steps:

[0028] Obtain the number S of the feeding device in operation sum and displacement threshold W fe And obtain the flow threshold W of the conveyor belt. pe At this time, the discharge rate of the feeding device remains unchanged, and the discharge rate is the discharge threshold.

[0029] According to the number of operations S sum and the flow threshold W of the transport belt pe A first ratio and a second ratio are obtained, wherein the first ratio is greater than the second ratio;

[0030] If the discharge threshold W of the feeding device fe If the ratio is greater than the second ratio and less than or equal to the first ratio, then according to the discharge threshold W of the feeding device... fe Control the discharge rate of the feeding device to carry out the discharge operation.

[0031] Furthermore, the first ratio and the second ratio are specifically expressed as follows:

[0032]

[0033] In the formula, A1 is the first ratio, A2 is the second ratio, and W pe S is the flow rate threshold for the conveyor belt. sum This refers to the number of times the feeding device is in operation.

[0034] Furthermore, if the discharge threshold W of the feeding device fe If the ratio is less than or equal to the second ratio, the controller can also be configured to perform the following steps:

[0035] Add a new receiving chute for material discharge operation and obtain the real-time total number of operations S of the feeding device. s ′ um .

[0036] According to the total number of real-time operations S s ′ um and the flow threshold W of the transport belt pe A third ratio and a fourth ratio are obtained, wherein the third ratio is greater than the fourth ratio.

[0037] If the discharge threshold W of the feeding device fe If the ratio is less than or equal to the fourth ratio, the above steps are repeated until the discharge threshold W of the feeding device is reached. fe It is greater than the fourth ratio and less than or equal to the third ratio.

[0038] Furthermore, the third ratio, the fourth ratio, and the total number of real-time operations are specifically expressed as follows:

[0039]

[0040] S s ′ um =S sum +1

[0041] In the formula, A3 is the third ratio, A4 is the fourth ratio, and S... s ′ um This represents the total number of real-time operations of the feeding device.

[0042] Furthermore, when new material conveying equipment needs to unload during the material discharge process, the controller is also configured to execute the following steps:

[0043] Obtain the real-time material quantity of the n receiving troughs.

[0044] From the n receiving troughs, select the receiving trough Y with the smallest real-time material storage volume, and use the receiving trough Y as the unloading area.

[0045] This application provides a material receiving trough discharge system. By rationally controlling the discharge flow rate of multiple receiving troughs and monitoring the remaining material in the troughs in real time, the system aims to ensure that all receiving troughs complete discharge simultaneously and in the shortest possible time. Furthermore, since new material handling equipment will unload during the discharge process, this application improves the utilization rate of the silo, optimizes discharge performance, and reduces energy consumption by unloading from the receiving trough with the least remaining material. Attached Figure Description

[0046] To more clearly illustrate the technical solutions of this application, the accompanying drawings used in the embodiments will be briefly described below. Obviously, those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0047] Figure 1 This is a schematic diagram of the structure of a single receiving device in the prior art;

[0048] Figure 2 This is a schematic diagram of the overall receiving equipment in the prior art;

[0049] Figure 3 This is a schematic diagram of the material discharge power consumption provided in the embodiments of this application;

[0050] Figure 4 This is a schematic diagram of the working process of the material receiving trough discharge system provided in the embodiments of this application.

[0051] In the diagram: 1-receiving trough, 2-feeding device, 3-conveyor belt. Detailed Implementation

[0052] The technical solutions of the embodiments of this application will be described completely and clearly below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0053] To facilitate understanding of the technical solutions of the embodiments of this application, some concepts involved in this application will be explained first below.

[0054] Combination Figure 1 and Figure 2 It can be seen that each receiving trough is equipped with a weighing sensor at the bottom, which can obtain the amount of material stored in each receiving trough in real time, that is, the storage volume M. iIn the steel production process, when material handling equipment unloads raw materials, the amount of material stored in each receiving trough is usually different, but all materials eventually converge onto the same conveyor belt and are transported to the stockpile. Therefore, the key to reducing energy consumption and maximizing resource utilization lies in controlling the discharge rate to achieve simultaneous unloading.

[0055] Furthermore, the discharge rate is controlled by adjusting the discharge rate of the feeding device. A higher discharge rate results in a larger discharge volume per unit time (i.e., discharge flow rate); conversely, a lower discharge rate results in a smaller discharge flow rate. The feeding device is typically designed with a preset discharge rate, measured in tons per hour (t / h), specifically as follows: Figure 3 As shown, the preset value W fe The setting is based on the device's power consumption i, and is generally set at the critical point before the device's power consumption increases sharply, i.e., W. fe =W0.

[0056] Assuming the real-time discharge flow rate controlled by the feeding device is W, then W must be less than or equal to the preset value W of the feeding device. fe That is, 0 ≤ W ≤ W0. At the same time, determining the real-time discharge flow rate W also requires considering the preset value W of the conveyor belt. pe The total real-time discharge flow rate of all receiving troughs must not exceed the preset value W of the conveyor belt. pe Otherwise, it would exceed the load-bearing capacity of the conveyor belt. Under certain circumstances, to minimize the working time of the conveyor belt, the unloading amount should be as close as possible to the maximum load-bearing capacity of the conveyor belt, i.e., the preset value of the conveyor belt. At this time, the power consumption is also the lowest and the working efficiency is the highest.

[0057] Based on the above theoretical foundation, this application focuses on simultaneously emptying the material from all receiving troughs, thereby controlling the different receiving troughs to perform material discharge operations at their respective discharge flow rates. Assuming the entire discharge equipment has a total of n receiving troughs, the following conditions must be met to ensure simultaneous completion of the discharge operation:

[0058]

[0059] In equation (1), W i This represents the real-time discharge rate of any feeding device.

[0060] Furthermore, due to the existence of a preset value W for the conveyor belt pe Let t be the time required for material discharge. From this, we can obtain:

[0061]

[0062] Given the stock level and the preset value of the conveyor belt, the time t required to complete the material unloading process can also be calculated using the above formula, i.e.:

[0063]

[0064] This application provides a material receiving trough discharge system applied to a material receiving device. The material receiving device includes n material receiving devices, and each material receiving device corresponds to a material receiving trough and a set of feeding devices. The material receiving trough discharge system specifically includes a controller, and the aforementioned n material receiving devices are communicatively connected to the controller. (Reference) Figure 4 This is a schematic diagram illustrating the workflow of the material receiving trough discharge system provided in an embodiment of this application. In the first real-time example of this application, the controller is configured to execute the following steps:

[0065] Step S11: Obtain the flow rate threshold W of the conveyor belt. pe and the amount of material M in any receiving trough i .

[0066] Step S12: Based on the material storage capacity M of the n receiving troughs i , and obtain the total inventory M.

[0067] Step S13: Based on the total inventory M and the conveyor belt flow threshold W pe , and obtain the discharge time t.

[0068] In this embodiment of the application, the material discharge time is obtained according to the following calculation model:

[0069]

[0070] In equation (4), t is the discharge time, and M is the discharge time. i W represents the amount of material stored in any receiving tank. pe This is the flow rate threshold for the transport belt.

[0071] Step S14: Based on the discharge time t and the material quantity M in any receiving trough... i The flow rate (i.e., discharge volume) generated by the feeding device corresponding to any receiving trough during the current discharge is obtained.

[0072] In this embodiment of the application, the discharge volume in step S14 must be less than or equal to the discharge volume threshold of the feeding device, specifically expressed as follows:

[0073] 0 < W < W fe (5)

[0074] In the formula, W is the discharge rate of the feeding device in this cycle, W fe This is the discharge threshold of the feeding device.

[0075] refer to Figure 3In this embodiment of the application, the discharge threshold W of the feeding device fe The value is set based on the power consumption i, and is generally taken as the critical point before the power consumption increases sharply, i.e., W. fe =W0.

[0076] Step S15: Based on the current discharge volume, control the discharge volume of the feeding device corresponding to any receiving trough and perform the discharge operation.

[0077] Therefore, the first embodiment of this application represents the most ideal state, where the total material storage in all receiving troughs is greater than or equal to the preset value of the conveyor belt. In this case, the time required to complete the discharge simultaneously is t. The discharge flow rate of each receiving trough can be obtained based on this time t, and the discharge rate of the feeding device can be controlled based on the discharge flow rate to achieve simultaneous discharge.

[0078] In the second embodiment of this application, if the total amount of material stored is less than the flow threshold of the conveyor belt, i.e., the amount of material stored in the receiving trough is insufficient, the discharge can be controlled based on the receiving trough with the largest amount of material. In this case, the controller can be configured to execute the following steps:

[0079] Step S21: Obtain the discharge threshold W of the feeding device fe .

[0080] Step S22: Based on the material storage capacity of the n receiving troughs, determine the receiving trough X with the largest material storage capacity, and obtain the material storage capacity M of receiving trough X. max .

[0081] Step S23: Based on the material quantity M of the receiving trough X max and the discharge threshold W of the feeding device fe The second discharge time t2 is obtained according to the following calculation model:

[0082]

[0083] Step S24: Based on the second discharge time t2 and the material quantity M in any receiving trough... i Obtain the current discharge W of the feeding device corresponding to any receiving trough. i The following calculation model is specifically adopted:

[0084]

[0085] Step S25: Based on the discharge rate of this round calculated in step S24, control the discharge rate of the feeding device corresponding to the receiving trough and carry out the discharge operation.

[0086] Therefore, the second embodiment of this application uses the time required for the receiving trough with the largest material volume to discharge material at the maximum flow rate as the overall working time of n receiving troughs, thereby adjusting the discharge rate of the feeding device of each receiving trough, so as to achieve the simultaneous completion of the discharge work of all receiving troughs in the shortest time.

[0087] In the third embodiment of this application, when the material level in any receiving trough reaches a preset value, the controller will issue a full-trough warning. When all n receiving troughs in the receiving equipment are full, it is not necessary to consider the material level in each receiving trough to adjust the discharge rate of the feeding device. Discharge can be controlled by increasing or decreasing the number of feeding devices activated under each receiving trough. Since the feeding device has a preset value, the discharge rate of the feeding device is set to the preset value. Therefore, controlling the number of feeding devices activated is sufficient to control the discharge rate of the entire discharging equipment. Specifically, when all n receiving troughs are full, the controller can also be configured to execute the following steps:

[0088] Step S31: Obtain the number S of operations of the feeding device sum and displacement threshold W fe And obtain the flow threshold W of the conveyor belt. pe At this time, the discharge rate of the feeding device remains unchanged, and the discharge rate is the discharge threshold.

[0089] Step S32: Based on the number S of the feeding device in operation sum and the flow threshold W of the conveyor belt pe The first ratio and the second ratio are obtained, wherein the first ratio is greater than the second ratio.

[0090] In this embodiment of the application, the first ratio and the second ratio are specifically represented as follows:

[0091]

[0092] In equation (8), A1 is the first ratio, A2 is the second ratio, and W pe S is the flow rate threshold for the conveyor belt. sum This refers to the number of times the feeding device is in operation.

[0093] Step S33: If the discharge threshold W of the feeding device fe If the ratio is greater than the second ratio obtained in step S32 and less than or equal to the first ratio obtained in step S32, then according to the discharge threshold W of the feeding device... fe To control the feeding amount of the feeding device and to carry out the discharge operation.

[0094] Specifically, when there is: When the flow rate is within the threshold value, it indicates that the number of feeders activated can meet the normal operation of the conveyor belt under the flow rate threshold. At this time, the receiving trough operates at the flow rate threshold W of the feeder.fe The material is discharged as the discharge volume of the feeding device.

[0095] Step S34: If the discharge threshold W of the feeding device fe Less than or equal to the second ratio obtained in step S32, that is, when: If the flow rate threshold W of the feeding device is still used... fe If material is discharged, the total discharge volume will be less than the conveyor belt's flow threshold. In this case, the conveyor belt is not being utilized to its fullest extent, wasting both equipment resources and electrical energy. Therefore, the formula can be satisfied by increasing the number of feeding devices activated:

[0096] Specifically, if the discharge threshold W of the feeding device fe If the value is less than or equal to the second ratio, the controller can also be configured to perform the following steps:

[0097] Step S341: Add a new receiving chute for material discharge operation, and obtain the real-time total number of operations S of the feeding device. s ′ um .

[0098] Step S342: Based on the total number of real-time runs S s ′ um and the flow threshold W of the transport belt pe The third ratio and the fourth ratio are obtained, where the third ratio is greater than the fourth ratio.

[0099] In this embodiment of the application, the third ratio, the fourth ratio, and the total number of real-time operations are specifically represented as follows:

[0100]

[0101] S′ sum =S sum +1 (10)

[0102] In equations (9) and (10), A3 is the third ratio, A4 is the fourth ratio, and S′ sum This represents the total number of real-time operations of the feeding device.

[0103] Step S343: If the discharge threshold W of the feeding device fe If the value is less than or equal to the fourth ratio obtained in step S342, then continue to repeat steps S341 to S342 until the discharge threshold W of the feeding device is reached. fe It is greater than the fourth ratio and less than or equal to the third ratio, i.e., it satisfies:

[0104] Therefore, the third embodiment of this application does not require consideration of the discharge sequence of the receiving troughs. It only needs to obtain the material quantity in each receiving trough through a weighing sensor, and then discharge the full receiving troughs sequentially at a fixed flow rate. The third embodiment of this application discharges material using a preset value of the feeding device, which enables the receiving troughs to complete discharge in the shortest time. Furthermore, by increasing or decreasing the number of feeding devices in operation, the discharge rate can be controlled to better utilize the discharge capacity of each receiving trough.

[0105] Based on the first to third embodiments of this application, when a new material conveying device needs to unload during the material discharge process, the controller is further configured to execute the following steps:

[0106] Step S41: Obtain the real-time material quantity of n receiving troughs.

[0107] Step S44: Select the receiving trough Y with the smallest real-time material storage from the n receiving troughs, and use the receiving trough Y as the unloading area.

[0108] In summary, this embodiment of the application, by controlling the discharge rate through a feeding device based on real-time monitoring of the material quantity in each receiving trough, maximizes the utilization of the conveyor belt's load capacity, more effectively shortens the discharge time, and further improves discharge efficiency, significantly reducing the energy consumption of the receiving troughs. Simultaneously, it solves problems such as the feeding device operating without material and low utilization of the receiving troughs in traditional discharge processes. Because the receiving troughs can discharge simultaneously, the efficiency of the material handling equipment in the unloading process is also improved, facilitating the rational arrangement of the receiving troughs when the material handling equipment is queuing for unloading.

[0109] The material receiving trough discharge system provided in this application will be described in detail below through specific embodiments.

[0110] Take a steel plant's receiving troughs as an example. Assume there are a total of 10 receiving troughs, each capable of holding a maximum of 1000t of material. The maximum discharge capacity of each receiving trough is 1100t / h, while the maximum load on the conveyor belt is 1500t / h. The known material contents in the 10 receiving troughs are 960t, 540t, 670t, 720t, 760t, 430t, 810t, 380t, 680t, and 550t, respectively.

[0111] If the material is discharged at a fixed rate, the discharge rate of each receiving trough is 150t / h under the maximum load limit of the conveyor belt. At this time, the maximum material volume is 960t. If it takes 6.4 hours to discharge all the material in the receiving trough, then multiple receiving troughs will be empty during the discharge process.

[0112] Another approach involves discharging material from the receiving troughs according to their material levels, from highest to lowest, using the maximum discharge capacity to expel material from each trough as quickly as possible. For example, with a 960t trough, it would take 0.87 hours to complete the discharge process. Extrapolating this, the total discharge time for all troughs would be 5.9 hours. While this method reduces the time to some extent, it introduces problems such as heavy belt loads in certain areas. Furthermore, when one trough is discharging, other troughs are in a waiting state with material, preventing them from adding new material and significantly reducing work efficiency.

[0113] The material discharge system provided in this application embodiment can effectively solve the above problems. According to formula (3), the materials in these 10 receiving troughs can be discharged simultaneously after 4.3 hours. Furthermore, the discharge flow rate of each receiving trough can be calculated based on the discharge time required. Taking the first receiving trough as an example, the discharge flow rate of this receiving trough is 223.26 t / h, and the discharge rate of the feeding device is set accordingly.

[0114] If the material conveying equipment needs to unload during the material discharge process, the material discharge work can be paused from small to large according to the amount of material remaining in the receiving trough, and the discharge flow rate of each receiving trough can be recalculated according to formula (3). Finally, by repeatedly calculating and controlling the feeding device, real-time control of material discharge can be achieved, so as to complete the material discharge work simultaneously in the shortest possible time.

[0115] As can be seen from the above technical solutions, this application provides a material receiving trough discharge system. By rationally controlling the discharge flow rate of multiple material receiving troughs and monitoring the remaining material in the troughs in real time, it aims to ensure that all material receiving troughs complete discharge simultaneously and in the shortest possible time. Furthermore, since new material handling equipment will unload during the discharge process, this application improves the utilization rate of the silo, optimizes discharge performance, and reduces energy consumption required for discharge by unloading from the material receiving trough with the least remaining material.

[0116] The present application has been described in detail above with reference to specific embodiments and exemplary examples; however, these descriptions should not be construed as limiting the present application. Those skilled in the art will understand that various equivalent substitutions, modifications, or improvements can be made to the technical solutions and implementation methods of the present application without departing from the spirit and scope of the present application, and all such modifications and improvements fall within the scope of the present application. The scope of protection of the present application is determined by the appended claims.

Claims

1. A material receiving trough discharge system, applied to a material receiving device, the material receiving device comprising n material receiving devices, each material receiving device corresponding to one material receiving trough, characterized in that, The material receiving trough discharge system includes a controller, and the n material receiving devices are communicatively connected by the controller. The controller is configured to perform the following steps: Obtain the flow rate threshold of the conveyor belt and the material quantity in any receiving trough; The total amount of material stored is obtained based on the amount of material stored in the n receiving troughs; The discharge time is obtained based on the total amount of material in storage and the flow rate threshold of the conveyor belt; Based on the discharge time and the amount of material stored in any receiving trough, the discharge rate of the feeding device corresponding to any receiving trough in that current cycle is obtained; Based on the current discharge volume, control the discharge volume of the feeding device corresponding to any receiving trough to perform the discharge operation; If the total amount of stored material is less than the flow threshold of the conveyor belt, the controller can be configured to execute the following steps: Obtain the discharge threshold W of the feeding device fe ; Based on the material storage capacity of the n receiving troughs, determine the receiving trough X with the largest material storage capacity, and obtain the material storage capacity M of receiving trough X. X ; Based on the material storage capacity M of receiving tank X X and the discharge threshold W of the feeding device fe The second discharge time t2 is obtained; Based on the second discharge time t2 and the material quantity M in any receiving trough i The discharge rate of the feeding device corresponding to any of the receiving troughs is obtained in this round. Based on the discharge rate of this round, the discharge rate of the feeding device corresponding to any receiving trough is controlled to carry out the discharge operation.

2. The material receiving trough discharge system according to claim 1, characterized in that, The following calculation model is used to obtain the material unloading time: In the formula, t is the discharge time, and M is the discharge time. i W represents the amount of material stored in any receiving tank. pe This is the flow rate threshold for the transport belt.

3. The material receiving trough discharge system according to claim 1, characterized in that, The requirement that the discharge volume in a given cycle must be less than or equal to the discharge volume threshold of the feeding device is specifically expressed as follows: 0<W<W fe In the formula, W is the discharge rate of the feeding device in this cycle, which is returned by the belt scale in the feeding device; W fe This is the discharge threshold of the feeding device.

4. The material receiving trough discharge system according to claim 3, characterized in that, The discharge threshold of the feeding device is set according to the power consumption of the equipment, and is generally taken as the critical point before the power consumption of the equipment increases sharply.

5. A material receiving trough discharge system according to claim 1, characterized in that, When the amount of material in any of the receiving troughs reaches the preset value of the receiving trough, the controller issues a full trough prompt.

6. A material receiving trough discharge system according to claim 5, characterized in that, When all n receiving troughs are full, the controller can also be configured to execute the following steps: Obtain the number S of the feeding device in operation sum and displacement threshold W fe And obtain the flow threshold W of the conveyor belt. pe At this time, the discharge rate of the feeding device remains unchanged, and the discharge rate is the discharge threshold. According to the number of operations S sum and the flow threshold W of the transport belt pe A first ratio and a second ratio are obtained, wherein the first ratio is greater than the second ratio; If the discharge threshold W of the feeding device fe If the ratio is greater than the second ratio and less than or equal to the first ratio, then according to the discharge threshold W of the feeding device... fe Control the discharge rate of the feeding device to carry out the discharge operation.

7. A material receiving trough discharge system according to claim 6, characterized in that, The first ratio and the second ratio are specifically expressed as follows: In the formula, A1 is the first ratio, A2 is the second ratio, and W pe S is the flow rate threshold for the conveyor belt. sum This refers to the number of times the feeding device is in operation.

8. A material receiving trough discharge system according to claim 6 or 7, characterized in that, If the discharge threshold W of the feeding device fe If the ratio is less than or equal to the second ratio, the controller can also be configured to perform the following steps: Add a new receiving chute for material discharge operation and obtain the real-time total number of operations S′ of the feeding device. sum ; Based on the total number of real-time operations S′ sum and the flow threshold W of the transport belt pe A third ratio and a fourth ratio are obtained, wherein the third ratio is greater than the fourth ratio; If the discharge threshold W of the feeding device fe If the ratio is less than or equal to the fourth ratio, the above steps are repeated until the discharge threshold W of the feeding device is reached. fe It is greater than the fourth ratio and less than or equal to the third ratio.

9. A material receiving trough discharge system according to claim 8, characterized in that, The third ratio, the fourth ratio, and the total number of real-time operations are specifically represented as follows: S′ sum =S sum +1 In the formula, A3 is the third ratio, A4 is the fourth ratio, and S′ sum This represents the total number of feeders operating in real time.

10. A material receiving trough discharge system according to claim 1, characterized in that, When a new material conveying device needs to unload during the material discharge process, the controller is also configured to execute the following steps: Obtain the real-time material quantity of the n receiving troughs; From the n receiving troughs, select the receiving trough Y with the smallest real-time material storage volume, and use the receiving trough Y as the unloading area.

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