Control method, device and equipment for feeding system of rod mill and medium

Abstract

The invention discloses a control method, device and equipment of a rod mill feeding system and a medium, and belongs to the technical field of metallurgy. The feeding system of the rod mill comprises a fan-shaped valve, the fan-shaped valve is used for adjusting the feeding amount of the rod mill, and the method comprises the steps that the actual feeding amount and the target feeding amount of the rod mill are obtained; if the difference value obtained by subtracting the target feeding amount from the actual feeding amount is larger than a preset first difference value threshold value, the fan-shaped valve is controlled to execute the closing action of a preset first duration; if the difference value is smaller than a preset second difference value threshold value, the fan-shaped valve is controlled to execute the opening action of a preset second duration; wherein the first difference threshold value is larger than 0, and the second difference threshold value is smaller than 0. According to the method, the opening degree of the fan-shaped valve can be finely adjusted every time, the precision of adjustment every time is guaranteed, then the final deviation is small or even zero, and the rod mill can be kept in an efficient working state.

Description

Technical Field

[0001] The invention relates to the field of metallurgical technology, and in particular to a control method, device, equipment and medium for a rod mill feeding system. Background Art

[0002] Rod mill is an important sand making equipment in the iron ore building materials production line of the mining company's water plant. Continuously and stably feeding raw materials to the rod mill can make the rod mill run efficiently. The rod mill adopts the working mode of feeding at both ends and discharging in the middle. The raw materials in the silo are fed into the rod mill after passing through the fan valve, flat belt and inclined belt.

[0003] At present, the feeding amount of the rod mill is adjusted by adjusting the opening of the fan valve to make the rod mill run efficiently. When adjusting the opening of the fan valve, the technician will adjust the actual opening of the fan valve according to the required opening of the fan valve. However, the manual adjustment method results in low adjustment accuracy and poor timeliness, which will reduce the efficiency of the rod mill. Summary of the invention

[0004] In view of the above problems, the present invention is proposed to provide a control method for a rod mill feeding system that solves the above problems. When there is a certain deviation between the actual feeding amount of the rod mill and the target feeding amount, the fan valve is controlled to perform an opening action or a closing action to reduce the deviation to meet the requirements, and the time of each opening action or closing action is controlled to be a fixed time, so that each adjustment can be fine-tuned to ensure the accuracy of each adjustment, thereby making the final deviation smaller or even zero, so that the rod mill can be maintained in an efficient working state.

[0005] In a first aspect, the present invention provides a control method for a rod mill feeding system, wherein the rod mill feeding system comprises a fan-shaped valve, wherein the fan-shaped valve is used to adjust the feeding amount of the rod mill, and the method comprises:

[0006] Obtaining an actual feed rate and a target feed rate of the rod mill;

[0007] If the difference between the actual feeding amount and the target feeding amount is greater than a preset first difference threshold, controlling the fan valve to perform a closing action for a preset first time length;

[0008] If the difference is less than a preset second difference threshold, controlling the fan valve to perform an opening action for a preset second time length;

[0009] The first difference threshold is greater than 0, and the second difference threshold is less than 0.

[0010] Optionally, obtaining the actual feed amount and target feed amount of the rod mill includes:

[0011] The actual feed amount and the target feed amount of the rod mill are obtained once at every preset third time period.

[0012] Optionally, the rod mill feeding system further comprises a belt and a belt scale arranged on the belt, and the third time length is the ratio of the distance between the fan valve and the belt scale to the belt speed.

[0013] Optionally, the fan-shaped valve includes a first fan-shaped valve and a second fan-shaped valve, and each fan-shaped valve corresponds to a silo, and the method further includes:

[0014] Obtaining the material level of the silo;

[0015] If the material level of the silo corresponding to the first fan-shaped valve is lower than the preset material level threshold, the first fan-shaped valve is controlled to enter a closed state, and the second fan-shaped valve corresponding to the silo whose material level is higher than the material level threshold is controlled to enter an open state;

[0016] Wherein, the first fan-shaped valve is a fan-shaped valve whose current state is an open state, and the second fan-shaped valve is a fan-shaped valve whose current state is a closed state.

[0017] Optionally, after obtaining the actual feed rate and target feed rate of the rod mill, the method further includes:

[0018] If the difference is less than a preset third difference threshold, the first fan valve is controlled to enter the closed state, and the second fan valve corresponding to the silo whose material level is higher than the material level threshold is controlled to enter the open state;

[0019] The third difference threshold is smaller than the second difference threshold.

[0020] Optionally, the method further includes:

[0021] Obtaining the operating time of the first fan valve;

[0022] If the running time is greater than a preset time threshold, the first fan valve is controlled to enter a closed state, and the second fan valve corresponding to the silo whose material level is higher than the material level threshold is controlled to enter the open state.

[0023] Optionally, the method further includes:

[0024] Obtaining the opening degree of the fan valve before and after performing the opening action or the closing action for a preset number of times;

[0025] If the change between the front and rear openings is less than a preset change threshold, an alarm is issued.

[0026] In a second aspect, the present invention provides a control device for a rod mill feeding system, wherein the rod mill feeding system comprises a fan-shaped valve, wherein the fan-shaped valve is used to adjust the feeding amount of the rod mill, and the device comprises:

[0027] An acquisition module, used for acquiring an actual feeding amount and a target feeding amount of the rod mill;

[0028] A first control module, configured to control the fan valve to perform a closing action for a preset first duration if the difference between the actual feed amount and the target feed amount is greater than a preset first difference threshold;

[0029] A second control module, configured to control the fan valve to perform an opening action for a preset second time period if the difference is less than a preset second difference threshold;

[0030] The first difference threshold is greater than 0, and the second difference threshold is less than 0.

[0031] In a third aspect, the present invention provides an electronic device comprising: a memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method described in the first aspect by executing the computer instructions.

[0032] In a fourth aspect, the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the method described in the first aspect.

[0033] The technical solution provided in the embodiments of the present invention has at least the following technical effects or advantages:

[0034] The embodiments of the present invention provide a control method, device, equipment and medium for a rod mill feeding system. The rod mill feeding system includes a fan valve, which is used to adjust the feeding amount of the rod mill. The actual feeding amount and the target feeding amount of the rod mill can be obtained to understand the current working efficiency of the rod mill. If the difference between the actual feeding amount and the target feeding amount is greater than a preset first difference threshold, it means that the actual feeding amount is a bit larger than the target feeding amount. Then the fan valve is controlled to perform a closing action of a preset first duration, quantitatively reduce the opening of the fan valve, and quantitatively reduce the actual feeding amount, thereby reducing the difference. If the difference is less than a preset second difference threshold, it means that the actual feeding amount is a bit smaller than the target feeding amount. Then the fan valve is controlled to perform an opening action of a preset second duration, quantitatively increase the opening of the fan valve, and quantitatively increase the actual feeding amount, thereby reducing the difference, so that the raw material input of the rod mill is relatively stable and can be maintained in an efficient working state. Wherein, the first difference threshold is greater than 0, and the second difference threshold is less than 0. This method can make each adjustment a fine adjustment, ensuring the accuracy of each adjustment, thereby making the final deviation smaller or even zero, allowing the rod mill to maintain an efficient working state.

[0035] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0037] Figure 1 is a flow chart of a control method of a rod mill feeding system provided by an embodiment of the present invention;

[0038] Figure 2 It is a structural schematic diagram of a valve port of a fan-shaped valve provided in an embodiment of the present invention;

[0039] Figure 3 is a structural schematic diagram of a valve port of a modified fan-shaped valve provided in an embodiment of the present invention;

[0040] Figure 4 It is a structural block diagram of a control device of a rod mill feeding system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0041] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0042] Before introducing in detail a control method for a rod mill feeding system provided by an embodiment of the present invention, a brief introduction to the implementation environment involved is first given.

[0043] In this embodiment, the feeding system of the rod mill is used to feed raw materials to the rod mill, and the feeding system includes a silo, a fan valve, a flat belt and an inclined belt. The silo is filled with raw materials, and the fan valve is arranged at the discharge port of the silo. The raw materials first come out of the fan valve and then are transported to the rod mill through the flat belt and the inclined belt. The raw material discharge amount is controlled by controlling the opening of the fan valve. The larger the opening of the fan valve, the larger the discharge amount, and the smaller the opening of the fan valve, the smaller the discharge amount, thereby realizing the control of the feeding amount of the rod mill. A belt scale is arranged on the inclined belt to weigh the weight of the raw materials on it. The rod mill adopts a working mode of feeding at both ends and discharging in the middle.

[0044] Next, the control method of the rod mill feeding system provided by the embodiment of the invention is introduced in detail with reference to the accompanying drawings.

[0045] Figure 1 : is a flow chart of a control method of a rod mill feeding system provided by an embodiment of the present invention, such as Figure 1 As shown, the method includes steps S110-S130.

[0046] Step S110, obtaining the actual feeding amount and the target feeding amount of the rod mill.

[0047] In this embodiment, the instantaneous value measured by the belt scale is the actual feeding amount of the rod mill. The target feeding amount is set by the technicians according to the actual production situation. The units of the actual feeding amount and the target feeding amount are mass units.

[0048] After step S110, the method further includes:

[0049] Determine the initial opening of the fan valve according to the target feed rate, and open the fan valve to the initial opening.

[0050] It can be understood that after the fan valve is opened to the initial opening, the raw material will flow from the valve port of the fan valve to the belt. At this time, the discharge amount of the valve port is the actual feeding amount, and the actual feeding amount needs to be equal to or close to the target feeding amount to meet the needs of the rod mill. In order to ensure the timeliness of raw material transportation, the fan valve can be controlled to enter the open state after the belt is turned on for a certain period of time. The certain period of time can be 10 seconds.

[0051] Figure 2 is a schematic diagram of the structure of a valve port of a fan-shaped valve provided in an embodiment of the present invention, such as Figure 2As shown, the valve port 1 of the fan valve is a large rectangle. When the fan valve is opened at a unit degree, the discharge amount of the valve port will be relatively large. When adjusting the actual feed amount, and the adjustment amount is relatively small, it is necessary to change the fan valve to a smaller opening. At this time, a very high adjustment accuracy is required, making the adjustment difficult. If the fan valve is opened at a unit degree, the discharge amount of the valve port becomes smaller, that is, by changing the opening to a larger degree, the same increase or decrease can be achieved, so there is no need for a particularly high adjustment accuracy, which can reduce the difficulty of adjustment. In order to solve this problem, the valve port of the fan valve is now modified.

[0052] Figure 3 is a schematic structural diagram of a valve port of a modified fan-shaped valve provided in an embodiment of the present invention, such as Figure 3 As shown, the two ends of the valve opening of the original fan-shaped valve are sealed to obtain a "crenel" type valve opening 2 structure, which reduces the cross-sectional area of ​​the valve opening and reduces the discharge amount of raw materials under unit opening. Therefore, when changing the same actual feed amount, a larger opening needs to be changed, reducing the requirement for adjustment accuracy.

[0053] Step S120: If the difference between the actual feeding amount and the target feeding amount is greater than a preset first difference threshold, the fan valve is controlled to perform a closing action for a preset first time period.

[0054] Wherein, the first difference threshold is greater than 0,

[0055] In this embodiment, if the difference between the actual feeding amount and the target feeding amount is greater than the preset first difference threshold, it means that there is a certain deviation between the actual feeding amount and the target feeding amount, and the actual feeding amount is greater than the target feeding amount, which means that the actual feeding amount is too much and the actual feeding amount needs to be reduced to reduce the difference. At this time, the fan valve is controlled to perform a closing action, and the execution time is the first duration, so that the opening of the fan valve is reduced, and the reduction amount is a fixed value.

[0056] In this embodiment, the fan valve performs the closing action of the preset first time length, which is to control the connection time of the electric closing circuit of the fan valve to be the first time length, and the electric closing circuit is used to control the fan valve to perform the closing action. The first time length is the pulse time for closing the fan valve, and the first time length is usually set to be relatively small, such as 0.1 seconds, and the small first time length makes the closing action of the fan valve stop quickly, so the opening reduction amount of the fan valve each time is also very small, so that the accuracy of each adjustment is very high.

[0057] If after the first cycle ends (after executing steps S110-S120 once), that is, after executing a closing action, in the second cycle, the difference between the actual feeding amount and the target feeding amount is still greater than the preset first difference threshold, then the closing action of the first duration is executed again, and the cycle is repeated until the difference is less than or equal to the first difference threshold, and the closing action is no longer executed.

[0058] Step S130: If the difference is less than a preset second difference threshold, the fan valve is controlled to perform an opening action for a preset second time period.

[0059] The second difference threshold is less than 0.

[0060] In this embodiment, if the difference is less than the preset second difference threshold, it means that there is a certain deviation between the actual feeding amount and the target feeding amount, and the actual feeding amount is less than the target feeding amount, then the actual feeding amount needs to be increased, that is, the opening of the fan valve needs to be increased, so the fan valve is controlled to perform the opening action, the opening of the fan valve is increased, and the execution time is the second time length, so that the opening of the fan valve increases, and the increase amount is a fixed value.

[0061] The fan valve performs the opening action of the preset second time length, which is to control the connection time of the electric opening circuit of the fan valve to be the second time length, and the electric opening circuit is used to control the fan valve to perform the opening action. The second time length is the pulse time for opening the fan valve, and the second time length is usually set to be relatively small, such as 0.1 seconds, and the small second time length makes the opening action of the fan valve stop quickly, so the increase in the opening degree of the fan valve each time is also very small, so that the accuracy of each adjustment is very high.

[0062] If after the first cycle ends (after executing steps S110 and S130 once), that is, after performing an opening action once, in the second cycle, the difference between the actual feeding amount and the target feeding amount is still less than the second difference threshold, then the opening action of the second duration is performed again, and the cycle is repeated until the difference is greater than or equal to the second difference threshold, and the opening action is no longer performed.

[0063] That is, in order to adjust the difference to between the first difference threshold and the second difference threshold, it may be necessary to perform the opening action multiple times or the closing action multiple times.

[0064] In this embodiment, if the difference is greater than or equal to the second difference threshold and less than or equal to the first difference threshold, the opening of the fan valve is not adjusted. For example, the first difference threshold may be 5, and the second difference threshold may be -5.

[0065] It can be understood that the range of values ​​between the first difference threshold and the second difference threshold is an allowable deviation range. When the difference is within the allowable deviation range, it means that the deviation between the actual feed amount and the target feed amount is acceptable, and there is no need to adjust the opening of the fan valve. At this time, the working efficiency of the rod mill is still relatively high. If the difference is not within the allowable deviation range, it is necessary to adjust the opening of the fan valve to put the rod mill in an efficient working state.

[0066] In this embodiment, if the first time length is the same as the second time length, the opening of the fan valve will return to the original opening after performing one opening action and one closing action. Therefore, the first time length and the second time length can be set to be different. Then, after performing one opening action and one closing action, the opening of the fan valve will have a slighter change, which can further achieve the depth fine adjustment of the opening. This adjustment method is recorded as the time difference adjustment method. The current opening of the fan valve can be calculated according to the following formula:

[0067] K = K0 + n1*K1 - n2*K2;

[0068] Among them, K represents the current opening, K0 represents the original opening, n1 represents the number of times the opening action is performed, K1 represents the change in the opening after performing an opening action, n2 represents the number of times the closing action is performed, K2 represents the change in the opening after performing a closing action. By controlling the size of n1 and n2, the depth of the opening can be fine-tuned.

[0069] Optionally, step S110 includes:

[0070] The actual feeding amount and the target feeding amount of the rod mill are obtained once at every preset third time period.

[0071] In this embodiment, the third time length is set as the interval time of each cycle, that is, steps S110-S130 are executed once every third time length.

[0072] Optionally, the third time duration is the ratio of the distance between the fan valve and the belt scale to the belt speed.

[0073] In this embodiment, the actual feeding amount will change each time the fan valve opening is adjusted. However, the change from the beginning of adjustment to the actual feeding amount is reflected by the instantaneous amount detected by the belt scale when the raw material moves from the fan valve to the belt scale. Therefore, the distance between the fan valve and the belt scale is calculated first, and then the ratio of the distance to the belt speed is calculated to obtain the time required for the raw material to move from the fan valve to the belt scale, which is the third time.

[0074] In this embodiment, if there are multiple fan-shaped valves, for example, some feeding systems have three fan-shaped valves. In this case, the time required for the raw materials from each fan-shaped valve to move to the belt scale is calculated, and the longest time is taken as the third time, so that the raw materials corresponding to other shorter time can reach the belt scale earlier, and the third time obtained in this way is safer.

[0075] In this embodiment, the opening of the fan valve can also be adjusted by analog quantity, and the opening of the fan valve is controlled by a continuously changing electrical signal, and the signal size is proportional to the opening. For example, the target opening corresponding to the target feeding amount is determined, and the opening of the fan valve is controlled to be the target opening. Among them, the valve port of the fan valve can be opened or closed by the hydraulic push rod, and the stroke of the hydraulic push rod directly affects the opening of the fan valve, so different strokes correspond to different openings. After the target opening is obtained, the target stroke corresponding to the target opening is determined, and then the stroke of the hydraulic push rod is controlled to be the target stroke, so that the opening of the fan valve is the target opening. However, the target opening and target stroke in this method are both analog quantities, and some feeding systems do not have the analog quantity input function, so this method cannot be used. However, the feeding system generally has a switch quantity input function, and the method of steps S110-S130 is a switch quantity method to adjust the opening of the fan valve, so the method of steps S110-S130 can be used to adjust the opening of the fan valve, and the scope of application is relatively wide.

[0076] Among them, the stroke of the hydraulic push rod can be detected by a displacement sensor, and the opening of the fan valve can be reflected by the stroke data.

[0077] Optionally, the method further includes:

[0078] The opening degree of the fan valve before and after the preset number of opening or closing actions is obtained; if the change between the opening degrees before and after is less than the preset change threshold, an alarm is issued.

[0079] In this embodiment, an early warning of the failure of the fan valve to switch can be performed. If the fan valve is controlled to perform an opening action and the preset number of times is performed, but it is found that the opening of the fan valve has not changed or has changed very little, it means that the fan valve has failed to perform the opening action, and an alarm is issued to remind the technician that the fan valve has failed to open. Similarly, if the fan valve is controlled to perform a closing action and the preset number of times is performed, but it is found that the opening of the fan valve has not changed or has changed very little, it means that the fan valve has failed to perform the closing action, and an alarm is issued to remind the technician that the fan valve has failed to close.

[0080] Among them, the preset number of times can be 3 times.

[0081] Optionally, the fan-shaped valve includes a first fan-shaped valve and a second fan-shaped valve, and the method further includes:

[0082] Get the material level of the silo; if the material level of the silo corresponding to the first fan valve is lower than the preset material level threshold, control the first fan valve to enter a closed state, and control the second fan valve corresponding to the silo whose material level is higher than the material level threshold to enter an open state.

[0083] Among them, the first fan-shaped valve is a fan-shaped valve whose current state is an open state, and the second fan-shaped valve is a fan-shaped valve whose current state is a closed state.

[0084] In this embodiment, the fan-shaped valve may include multiple ones, and the states of the fan-shaped valve include an open state, a closed state, an overhaul state, and a fault state. The open state may include a fully open state and a half-open state. The fan-shaped valve in the overhaul state or the fault state does not participate in the above control, that is, the first fan-shaped valve and the second fan-shaped valve are not in the overhaul state or the fault state.

[0085] Each fan-shaped valve corresponds to a silo, and the material level of each silo can be detected in real time. If the material level of the silo currently in use is too low, the actual feeding amount may be insufficient. When the feeding system is controlled on site, only one of the multiple fan-shaped valves may be opened. If the material level of the silo corresponding to the open fan-shaped valve is too low, it is necessary to switch the discharge silo, that is, select a silo corresponding to a fan-shaped valve from the closed fan-shaped valves as the feeding silo, and the material level of the silo must be higher than the material level threshold. After selecting the new fan-shaped valve, close the originally opened fan-shaped valve, open the selected new fan-shaped valve, and use the new silo for feeding so that the actual feeding amount is sufficient.

[0086] Optionally, after step S110, the method further includes:

[0087] If the difference between the actual feeding amount and the target feeding amount is less than the preset third difference threshold, the first fan valve is controlled to enter a closed state, and the second fan valve corresponding to the silo with a material level higher than the material level threshold is controlled to enter an open state.

[0088] The third difference threshold is smaller than the second difference threshold.

[0089] In this embodiment, if the difference between the actual feeding amount and the target feeding amount is less than the preset third difference threshold, it means that the actual feeding amount is much smaller than the target feeding amount. This situation is likely caused by the blockage of the valve port of the fan valve. At this time, the fan valve in the current open state should be closed, and a fan valve in the closed state should be selected to open. The material level of the silo corresponding to the selected closed fan valve should be higher than the material level threshold to ensure that the actual feeding amount is sufficient.

[0090] Optionally, the method further includes:

[0091] The operation time of the first fan valve is obtained; if the operation time is greater than the preset time threshold, the first fan valve is controlled to enter a closed state, and the second fan valve corresponding to the silo whose material level is higher than the material level threshold is controlled to enter an open state.

[0092] In this embodiment, if the fan-shaped valve is in a closed state for a long time, the valve port is easy to harden, affecting the discharge of raw materials in the silo. Therefore, the operation time of each fan-shaped valve cannot exceed the time threshold. When the time threshold is exceeded, the fan-shaped valve is switched, and the material level of the silo corresponding to the switched fan-shaped valve must be higher than the material level threshold, so as to ensure that the actual feeding amount is sufficient.

[0093] In this embodiment, a maximum opening is set, and the opening of the fan valve cannot exceed the maximum opening, so as to prevent the fan valve from being controlled to open without restriction when the valve port is blocked, resulting in the problem of the belt being stopped by the discharge pressure. Specifically, the maximum opening and the stroke of the hydraulic push rod are obtained; the maximum stroke corresponding to the maximum opening is determined; if the stroke of the hydraulic push rod is the maximum stroke, the fan valve is controlled not to open.

[0094] After the control method of the rod mill feeding system was put into use in the building materials production line of the water plant iron ore of the mining company, the fan valve opening was fine-tuned, and the problems of low precision and poor timeliness of manual adjustment were solved. So far, the feeding of the rod mill is very stable. The application of this method realizes the stable control of the automatic feeding of the rod mill, improves the feeding efficiency of the rod mill, and improves the intelligent operation level of the rod mill. It has great promotion value in the control of similar equipment and has great demonstration significance and promotion and application prospects in the domestic industry.

[0095] Based on the same inventive concept, an embodiment of the present invention further provides a control device for a rod mill feeding system. Figure 4 : is a structural block diagram of a control device for a rod mill feeding system provided by an embodiment of the present invention, such as Figure 4 As shown, the rod mill feeding system includes a fan-shaped valve, which is used to adjust the feeding amount of the rod mill. The device 400 includes an acquisition module 401, a first control module 402 and a second control module 403.

[0096] An acquisition module 401 is used to acquire an actual feed rate and a target feed rate of a rod mill;

[0097] The first control module 402 is used to control the fan valve to perform a closing action for a preset first time period if the difference between the actual feed amount and the target feed amount is greater than a preset first difference threshold;

[0098] The second control module 403 is used to control the fan valve to perform an opening action for a preset second time period if the difference is less than a preset second difference threshold;

[0099] The first difference threshold is greater than 0, and the second difference threshold is less than 0.

[0100] Optionally, the acquisition module 401 is further used for:

[0101] The actual feeding amount and the target feeding amount of the rod mill are obtained once at every preset third time period.

[0102] Optionally, the rod mill feeding system further includes a belt and a belt scale arranged on the belt, and the third time length is the ratio of the distance between the fan valve and the belt scale to the belt speed.

[0103] Optionally, the fan-shaped valve includes a first fan-shaped valve and a second fan-shaped valve, and each fan-shaped valve corresponds to a silo. The device 400 further includes a third control module, which is used to:

[0104] Get the material level of the silo;

[0105] If the material level of the silo corresponding to the first fan-shaped valve is lower than the preset material level threshold, the first fan-shaped valve is controlled to enter a closed state, and the second fan-shaped valve corresponding to the silo whose material level is higher than the material level threshold is controlled to enter an open state;

[0106] Among them, the first fan-shaped valve is a fan-shaped valve whose current state is an open state, and the second fan-shaped valve is a fan-shaped valve whose current state is a closed state.

[0107] Optionally, the device 400 further includes a fourth control module, configured to:

[0108] If the difference is less than the preset third difference threshold, the first fan valve is controlled to enter a closed state, and the second fan valve corresponding to the silo whose material level is higher than the material level threshold is controlled to enter an open state;

[0109] The third difference threshold is smaller than the second difference threshold.

[0110] Optionally, the device 400 further includes a fifth control module, configured to:

[0111] Obtaining the operating time of the first fan valve;

[0112] If the running time is greater than the preset time threshold, the first fan-shaped valve is controlled to enter a closed state, and the second fan-shaped valve corresponding to the silo with a material level higher than the material level threshold is controlled to enter an open state.

[0113] Optionally, the device 400 further includes an alarm module, which is used to:

[0114] Obtaining the opening degree of the fan valve before and after performing a preset number of opening actions or closing actions;

[0115] If the change between the front and rear openings is less than the preset change threshold, an alarm is issued.

[0116] An embodiment of the present invention further provides an electronic device, which may include a processor and a memory, wherein the processor and the memory may be communicatively connected to each other via a bus or other means.

[0117] The processor may be a central processing unit (CPU) or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0118] The memory may include a large capacity memory for data or instructions. By way of example and not limitation, the memory may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. Where appropriate, the memory may include a removable or non-removable (or fixed) medium. Where appropriate, the memory may be inside or outside the electronic device. In a particular embodiment, the memory may be a non-volatile solid-state memory.

[0119] In one example, the memory may be a read-only memory (ROM). In one example, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or a flash memory, or a combination of two or more of these.

[0120] The processor implements any one of the control methods for the rod mill feeding system in the above embodiments by reading and executing the computer program instructions stored in the memory.

[0121] In one example, the electronic device may further include a communication interface and a bus. Among them, the processor, memory, and communication interface are connected through a bus and communicate with each other. The communication interface is mainly used to realize the communication between the modules, devices, units and / or devices in the embodiment of the present application. Where appropriate, the bus may include one or more buses.

[0122] In addition, in combination with the control method of the rod mill feeding system in the above embodiment, the embodiment of the present invention can provide a computer-readable storage medium for implementation. The computer-readable storage medium stores computer program instructions; when the computer program instructions are executed by the processor, any one of the control methods of the rod mill feeding system in the above embodiment is implemented.

[0123] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0124] The embodiments of the present invention provide a control method, device, equipment and medium for a rod mill feeding system. The rod mill feeding system includes a fan valve, which is used to adjust the feeding amount of the rod mill. The actual feeding amount and the target feeding amount of the rod mill can be obtained to understand the current working efficiency of the rod mill. If the difference between the actual feeding amount and the target feeding amount is greater than a preset first difference threshold, it means that the actual feeding amount is a bit larger than the target feeding amount. Then the fan valve is controlled to perform a closing action of a preset first duration, quantitatively reduce the opening of the fan valve, and quantitatively reduce the actual feeding amount, thereby reducing the difference. If the difference is less than a preset second difference threshold, it means that the actual feeding amount is a bit smaller than the target feeding amount. Then the fan valve is controlled to perform an opening action of a preset second duration, quantitatively increase the opening of the fan valve, and quantitatively increase the actual feeding amount, thereby reducing the difference, so that the raw material input of the rod mill is relatively stable and can be maintained in an efficient working state. Wherein, the first difference threshold is greater than 0, and the second difference threshold is less than 0. This method can make each adjustment a fine adjustment, ensuring the accuracy of each adjustment, thereby making the final deviation smaller or even zero, allowing the rod mill to maintain an efficient working state.

[0125] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0126] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting the intention that the claimed invention requires more features than those explicitly recited in each claim. More specifically, as reflected in the claims below, inventive aspects lie in less than all the features of the individual embodiments disclosed above. Therefore, the claims that follow the specific embodiment are hereby expressly incorporated into the specific embodiment, with each claim itself serving as a separate embodiment of the present invention.

[0127] It should be noted that the above embodiments illustrate the present invention rather than limit it, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets shall not be construed as a limitation on the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "one" or "an" preceding a component does not exclude the presence of a plurality of such components. The present invention may be implemented by means of hardware comprising a number of different components and by means of a suitably programmed computer. In a unit claim enumerating a number of devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc., does not indicate any order. These words may be interpreted as names.

Claims

1. A control method for a rod mill feeding system, characterized in that: The rod mill feeding system includes a fan-shaped valve, and the fan-shaped valve is used to adjust the feeding amount of the rod mill. The method includes: Obtaining an actual feed rate and a target feed rate of the rod mill; If the difference between the actual feeding amount and the target feeding amount is greater than a preset first difference threshold, controlling the fan valve to perform a closing action for a preset first time length; If the difference is less than a preset second difference threshold, controlling the fan valve to perform an opening action for a preset second time length; The first difference threshold is greater than 0, and the second difference threshold is less than 0.

2. The control method of the rod mill feeding system according to claim 1, characterized in that: The method of obtaining the actual feeding amount and the target feeding amount of the rod mill comprises: The actual feed amount and the target feed amount of the rod mill are obtained once at every preset third time period.

3. The control method of the rod mill feeding system according to claim 2, characterized in that: The rod mill feeding system further comprises a belt and a belt scale arranged on the belt, and the third time length is the ratio of the distance between the fan valve and the belt scale to the belt speed.

4. The control method of the rod mill feeding system according to claim 1, characterized in that: The fan-shaped valve comprises a first fan-shaped valve and a second fan-shaped valve, and each fan-shaped valve corresponds to a silo. The method further comprises: Obtaining the material level of the silo; If the material level of the silo corresponding to the first fan-shaped valve is lower than the preset material level threshold, the first fan-shaped valve is controlled to enter a closed state, and the second fan-shaped valve corresponding to the silo whose material level is higher than the material level threshold is controlled to enter an open state; Wherein, the first fan-shaped valve is a fan-shaped valve whose current state is an open state, and the second fan-shaped valve is a fan-shaped valve whose current state is a closed state.

5. The control method of the rod mill feeding system according to claim 4, characterized in that: After obtaining the actual feeding amount and the target feeding amount of the rod mill, the method further comprises: If the difference is less than a preset third difference threshold, the first fan valve is controlled to enter the closed state, and the second fan valve corresponding to the silo whose material level is higher than the material level threshold is controlled to enter the open state; The third difference threshold is smaller than the second difference threshold.

6. The control method of the rod mill feeding system according to claim 5, characterized in that: The method further comprises: Obtaining the operating time of the first fan valve; If the running time is greater than a preset time threshold, the first fan valve is controlled to enter a closed state, and the second fan valve corresponding to the silo whose material level is higher than the material level threshold is controlled to enter the open state.

7. The control method of the rod mill feeding system according to claim 1, characterized in that: The method further comprises: Obtaining the opening degree of the fan valve before and after performing the opening action or the closing action for a preset number of times; If the change between the front and rear openings is less than a preset change threshold, an alarm is issued.

8. A control device for a rod mill feeding system, characterized in that: The rod mill feeding system includes a fan-shaped valve, which is used to adjust the feeding amount of the rod mill. The device includes: An acquisition module, used for acquiring an actual feeding amount and a target feeding amount of the rod mill; A first control module, configured to control the fan valve to perform a closing action for a preset first duration if the difference between the actual feed amount and the target feed amount is greater than a preset first difference threshold; A second control module, configured to control the fan valve to perform an opening action for a preset second time period if the difference is less than a preset second difference threshold; The first difference threshold is greater than 0, and the second difference threshold is less than 0.

9. An electronic device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method according to any one of claims 1 to 7 by executing the computer instructions.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to cause the computer to execute the method according to any one of claims 1 to 7.

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