Control method, device and system of high-frequency vibrating screen online cleaning system and medium

Abstract

The application relates to the technical field of device control, in particular to a control method, device and system of an online cleaning system of a high-frequency vibrating screen and a medium. Through the rotating spray head and the high-pressure water flow arranged in the system, solid particles and dirt on the surface of the screen can be effectively cleaned, the cleaning state of the screen is maintained, the screening efficiency and accuracy are ensured, through the PLC control unit, the system can realize automatic cleaning control according to the quality of the screen, the water pressure on the cleaning water pipe can be adjusted according to needs, the stability and adaptability of the cleaning effect are ensured, meanwhile, the impact on the screen is reduced, and the service life of the screen is prolonged, and the problem of how to realize online cleaning of the high-frequency vibrating screen is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of device control, and particularly relates to a control method, device and system of an online cleaning system of a high-frequency vibrating screen and a medium. BACKGROUND

[0002] The grinding and grading process of the Yiliang Chihong Concentrator currently adopts a series grading system of a spiral classifier + a high-frequency vibrating screen. The application of the high-frequency vibrating screen has solved the industry problem of over-grinding of fine particles and under-grinding of coarse particles in the grinding and grading process, and has stabilized the concentration and fineness of the grinding. Due to the influence of the change of the ore properties in the deep part of the mine, the high-frequency vibrating screen is prone to scaling and clogging of the screen mesh during use, which reduces the screening efficiency from the designed 70% to below 40%. In addition, the scaling and clogging of the screen mesh will cause a series of adverse effects such as non-compliance of the concentrate grade and increase of the power consumption of the mill medium.

[0003] In the related technical solutions, the screen mesh is usually manually removed from the series grading system for cleaning, chemical immersion and other cleaning actions at regular intervals, and then returned to the original position after cleaning.

[0004] The inventors found in the process of conceiving and implementing the present application that, in order to ensure the screening efficiency of the screen mesh, the screen mesh needs to be cleaned more than 3 times a week in actual application, and 4 people are arranged to clean for more than 8 hours each time. The annual cost of labor and chemicals for online cleaning and disassembly of the clogged screen mesh is about 100,000 yuan, which increases the production cost and restricts the grinding and grading efficiency. Therefore, a system capable of online cleaning of the high-frequency vibrating screen is needed.

[0005] The above content is only used to assist in understanding the technical solutions of the present application and does not mean that the above content is prior art. SUMMARY

[0006] The main purpose of the present application is to provide a control method of an online cleaning system of a high-frequency vibrating screen, which aims to solve the problem of how to realize online cleaning of the high-frequency vibrating screen.

[0007] To achieve the above-mentioned purpose, the present application provides a control method of an online cleaning system of a high-frequency vibrating screen, which comprises:

[0008] The online cleaning system of the high-frequency vibrating screen comprises a pulp pipeline, multiple layers of screen meshes and a PLC control unit. At least two air cylinders for controlling the extension and retraction of a cleaning water pipe are installed at one end of each layer of screen meshes. A rotating spray head with adjustable rotating speed is additionally provided at one end of the cleaning water pipe, and the other end is connected to an air pressure valve of a variable frequency booster pump. A pneumatic pipe clamping valve is arranged at the pipe opening of the pulp pipeline. The method comprises the following steps:

[0009] selecting a target cleaning layer from the layers to be cleaned upon detecting a cleaning process trigger;

[0010] controlling a pneumatic pinch valve located in the target cleaning layer to close to prevent the ore pulp in the ore pulp pipeline from flowing out, controlling the air pressure valve located in the target cleaning layer to open, and controlling the variable frequency booster pump to operate at a target power to make the pressurized water flow in the rotating nozzle of the cleaning water pipeline meet a target flow rate;

[0011] controlling the air cylinder to move within a preset distance range to drive the cleaning water pipeline to move within a preset area, and controlling the rotating nozzle to rotate at a target rotational speed, so that the rotating nozzle back and forth and rotates to wash the screen corresponding to the target cleaning layer;

[0012] when it is detected that the screen corresponding to the target cleaning layer meets a preset cleaning condition, controlling the air pressure valve to close and the air cylinder to stop moving, and setting the cleaning state of the target cleaning layer to a completed state;

[0013] returning to the step of selecting a target cleaning layer from the layers to be cleaned until each cleaning layer is cleaned, wherein the target cleaning layer selected again is different from the target cleaning layer selected last time.

[0014] Optionally, the high-frequency vibrating screen online cleaning system comprises a pressure sensor for collecting screen quality, and the step of controlling the variable frequency booster pump to operate at a target power comprises:

[0015] obtaining the screen quality collected by the pressure sensor;

[0016] determining a target flow rate of the water flow sprayed from the rotating nozzle according to the screen quality;

[0017] determining a target power of the variable frequency booster pump that meets the target flow rate;

[0018] controlling the variable frequency booster pump to operate at the target power to make the water flow sprayed from the rotating nozzle meet the target flow rate.

[0019] Optionally, the step of controlling the rotating nozzle to rotate at a target rotational speed comprises:

[0020] determining a target rotational speed of the rotating nozzle according to the target power of the variable frequency booster pump;

[0021] controlling the rotating nozzle to rotate at the target rotational speed.

[0022] Optionally, the high-frequency vibrating screen online cleaning system comprises a camera for collecting screen images, and before the step of detecting that the screen corresponding to the target layer to be cleaned meets the preset cleaning condition, controlling the air pressure valve to be closed and the air cylinder to stop moving, and setting the cleaning state of the target layer to be cleaned to a completed state, the high-frequency vibrating screen online cleaning system further comprises:

[0023] acquiring the screen image collected by the camera;

[0024] extracting screen features in the screen image;

[0025] determining a feature similarity between the screen features and reference screen features;

[0026] when the feature similarity is greater than a preset similarity threshold, determining that the screen corresponding to the target layer to be cleaned meets the preset cleaning condition.

[0027] Optionally, before the step of selecting the target layer to be cleaned when detecting that the cleaning process is triggered, the high-frequency vibrating screen online cleaning system further comprises:

[0028] when detecting a cleaning instruction input by a user, triggering the cleaning process; or

[0029] triggering the cleaning process at intervals of a preset period.

[0030] Optionally, the step of selecting the target layer to be cleaned comprises:

[0031] determining cleaning identifiers corresponding to each layer to be cleaned, wherein the cleaning identifiers sequentially mark the layers to be cleaned in a top-down order;

[0032] selecting the layers to be cleaned in a top-down order as the target layer to be cleaned according to the marking order of the cleaning identifiers.

[0033] In addition, to achieve the above-mentioned purposes, the application further provides a control device of a high-frequency vibrating screen online cleaning system, which comprises:

[0034] a screen selection module for selecting a target layer to be cleaned when detecting that a cleaning process is triggered;

[0035] a first control module for controlling a pneumatic pipe clamping valve in the target layer to be cleaned to be closed to prevent the mineral slurry in a mineral slurry pipeline from flowing out, controlling an air pressure valve in the target layer to be cleaned to be opened, and controlling a variable frequency booster pump to operate at a target power to make a rotating nozzle in the cleaning water pipeline spray pressurized water flow meeting a target flow rate;

[0036] The second control module controls the air cylinder to move within a preset distance range to drive the cleaning water pipe to move within a preset area, and controls the rotating spray head to rotate at a target rotating speed, so that the rotating spray head back and forth and rotates to wash the screen corresponding to the target layer to be cleaned.

[0037] The third control module is configured to, when detecting that the screen corresponding to the target layer to be cleaned meets a preset cleaning condition, control the air pressure valve to be closed and the air cylinder to stop moving, and set a cleaning state of the target layer to be cleaned to a completed state; and return to execute the step of selecting a target layer to be cleaned from the layers to be cleaned until each cleaning layer is cleaned, wherein the target layer to be cleaned selected again is different from the target layer to be cleaned selected last time.

[0038] In addition, to achieve the above object, the application further provides a high-frequency vibrating screen online cleaning system, which comprises a memory, a processor, and a control program of the high-frequency vibrating screen online cleaning system stored in the memory and executable on the processor, and the control program of the high-frequency vibrating screen online cleaning system implements the steps of the control method of the high-frequency vibrating screen online cleaning system when executed by the processor.

[0039] In addition, to achieve the above object, the application further provides a computer readable storage medium, which stores a control program of a high-frequency vibrating screen online cleaning system, and the control program of the high-frequency vibrating screen online cleaning system implements the steps of the control method of the high-frequency vibrating screen online cleaning system when executed by a processor.

[0040] The application has at least the following technical effects:

[0041] I. The solid particles and dirt on the surface of the screen can be effectively cleaned by the rotating spray head and high-pressure water flow provided in the system, the cleanliness of the screen is maintained, and the screening efficiency and accuracy are ensured.

[0042] II. The system can realize online cleaning of the screen during the screening process without stopping or manual intervention, saving cleaning time and labor cost, and improving production efficiency.

[0043] III. The system can realize automatic cleaning control according to the quality of the screen through the PLC control unit, the water pressure on the cleaning water pipe can be adjusted as needed to ensure the stability and adaptability of the cleaning effect, and the impact on the screen is reduced to prolong the service life of the screen.

[0044] IV. The rotating spray head with adjustable rotating speed can adapt to different types of solid particles and dirt.

[0045] Fifth, by optimizing the use and control of cleaning water flow, energy and water consumption during the cleaning process can be reduced, production costs can be lowered, and environmental impact can be minimized. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the hardware operating environment of the online cleaning system for high-frequency vibrating screens involved in the embodiments of this application;

[0047] Figure 2 This is a flowchart illustrating the first embodiment of the control method for the online cleaning system of the high-frequency vibrating screen according to this application.

[0048] Figure 3 This is a schematic diagram of the control device architecture of the online cleaning system for high-frequency vibrating screens in this application;

[0049] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0050] This application involves installing multiple pairs of cylinders to drive stainless steel water pipes in each layer of a high-frequency vibrating screen for cleaning. Each layer of water pipes is connected in parallel to a variable frequency booster pump. To achieve pneumatic automatic control, pneumatic valves and pneumatic clamp valves are installed on the water pipes and slurry pipes. The variable frequency booster pump, pneumatic valves, and pneumatic clamp valves are connected to a time relay and controlled and regulated by a PLC to form an automatic air pressure control device.

[0051] To better understand the above technical solutions, exemplary embodiments of this disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.

[0052] As one implementation scheme, Figure 1 This is a schematic diagram of the hardware operating environment of the online cleaning system for high-frequency vibrating screens involved in the embodiments of this application.

[0053] like Figure 1As shown, the high-frequency vibrating screen online cleaning system may include: a processor 1001, such as a CPU; a memory 1005; a user interface 1003; a network interface 1004; and a communication bus 1002. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen or an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface). The memory 1005 may be a high-speed RAM or a stable, non-volatile memory, such as a disk drive. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0054] Those skilled in the art will understand that Figure 1 The high-frequency vibrating screen online cleaning system architecture shown in the figure does not constitute a limitation on the high-frequency vibrating screen online cleaning system. It may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0055] like Figure 1 As shown, the memory 1005, which serves as a storage medium, may include an operating system, a network communication module, a user interface module, and a control program for the online cleaning system of the high-frequency vibrating screen. The operating system is a program that manages and controls the hardware and software resources of the online cleaning system of the high-frequency vibrating screen, as well as the operation of the control program and other software or programs.

[0056] exist Figure 1 In the high-frequency vibrating screen online cleaning system shown, the user interface 1003 is mainly used to connect to the terminal and communicate data with the terminal; the network interface 1004 is mainly used to communicate data with the back-end server; and the processor 1001 can be used to call the control program of the high-frequency vibrating screen online cleaning system stored in the memory 1005.

[0057] In this embodiment, the online cleaning system for a high-frequency vibrating screen includes: a memory 1005, a processor 1001, and a control program for the online cleaning system for a high-frequency vibrating screen stored in the memory and executable on the processor, wherein:

[0058] When processor 1001 calls the control program of the online cleaning system for the high-frequency vibrating screen stored in memory 1005, it performs the following operations:

[0059] When the cleaning process is detected to be triggered, the target layer to be cleaned is selected from the layers to be cleaned;

[0060] The pneumatic clamp valve located in the target layer to be cleaned is closed to prevent the slurry from flowing out of the slurry pipeline. The pneumatic valve located in the target layer to be cleaned is opened and the variable frequency booster pump is operated at the target power so that pressurized water flow that meets the target flow rate is sprayed from the rotary nozzle in the cleaning water pipe.

[0061] The cylinder is controlled to move within a preset distance range to drive the cleaning water pipe to move within a preset area, and the rotating nozzle is controlled to rotate at a target speed so that the rotating nozzle moves back and forth and rotates to rinse the screen corresponding to the target layer to be cleaned.

[0062] When the screen corresponding to the target layer to be cleaned is detected to meet the preset cleaning conditions, the air pressure valve is controlled to close and the cylinder is stopped moving, and the cleaning status of the target layer to be cleaned is set to the completed state.

[0063] Return to the step of selecting the target layer to be cleaned from the layers to be cleaned, until each cleaning layer is cleaned, wherein the target layer to be cleaned again is different from the target layer to be cleaned in the previous step.

[0064] When processor 1001 calls the control program of the online cleaning system for the high-frequency vibrating screen stored in memory 1005, it performs the following operations:

[0065] Obtain the screen mass collected by the pressure sensor;

[0066] The target flow rate of the water jet from the rotating nozzle is determined based on the quality of the screen.

[0067] Determine the target power of the variable frequency booster pump that satisfies the target flow rate;

[0068] The variable frequency booster pump is controlled to operate at the target power so that water flow that meets the target flow rate is ejected from the rotating nozzle.

[0069] When processor 1001 calls the control program of the online cleaning system for the high-frequency vibrating screen stored in memory 1005, it performs the following operations:

[0070] The target rotational speed of the rotary nozzle is determined based on the target power of the variable frequency booster pump.

[0071] The rotating nozzle is controlled to rotate at the target rotation speed.

[0072] When processor 1001 calls the control program of the online cleaning system for the high-frequency vibrating screen stored in memory 1005, it performs the following operations:

[0073] Acquire the screen image captured by the camera;

[0074] Extract the screen features from the screen image;

[0075] Determine the feature similarity between the screen features and the reference screen features;

[0076] When the feature similarity is greater than a preset similarity threshold, it is determined that the screen corresponding to the target layer to be cleaned meets the preset cleaning conditions.

[0077] When processor 1001 calls the control program of the online cleaning system for the high-frequency vibrating screen stored in memory 1005, it performs the following operations:

[0078] Get the preset cleaning duration;

[0079] When the control duration of the rotating nozzle and / or the cylinder meets the preset cleaning duration, it is determined that the screen corresponding to the target layer to be cleaned meets the preset cleaning conditions.

[0080] When processor 1001 calls the control program of the online cleaning system for the high-frequency vibrating screen stored in memory 1005, it performs the following operations:

[0081] The cleaning process is triggered when a user-inputted cleaning command is detected; or,

[0082] The cleaning process is triggered at preset intervals.

[0083] When processor 1001 calls the control program of the online cleaning system for the high-frequency vibrating screen stored in memory 1005, it performs the following operations:

[0084] Determine the cleaning identifier corresponding to each layer to be cleaned, wherein the cleaning identifiers are marked sequentially from bottom to top for each layer to be cleaned;

[0085] Based on the marking order of the cleaning markers, the layers to be cleaned are selected as the target layers to be cleaned in a bottom-up order.

[0086] Based on the hardware architecture of the high-frequency vibrating screen online cleaning system based on the above-mentioned equipment control technology, an embodiment of the control method of the high-frequency vibrating screen online cleaning system of this application is proposed.

[0087] First Embodiment

[0088] In this embodiment, the high-frequency vibrating screen online cleaning system includes slurry pipelines, multi-layer screens, and a PLC control unit.

[0089] Each layer of screen has at least two cylinders installed on both sides at one end to control the extension and retraction of the cleaning water pipe. One end of the cleaning water pipe is equipped with a rotary nozzle with adjustable speed, and the other end is connected to the air pressure valve of the variable frequency booster pump.

[0090] A pneumatic clamp valve is installed at the inlet of the slurry pipeline. The pneumatic clamp valve is used to close when the cleaning system is working to prevent the slurry from flowing out of the slurry pipeline.

[0091] The PLC control unit is used to send corresponding control commands to each controlled structure in the system.

[0092] In this embodiment, the working process of the online cleaning system for the high-frequency vibrating screen is as follows:

[0093] Initially, the system is in a state awaiting cleaning. The slurry is transported through pipelines to multiple layers of screens for screening, which can easily cause solid particles or contaminants to accumulate on the surface of the screens. When cleaning of the screens is required, the PLC control unit (hereinafter referred to as the control unit) receives a cleaning signal. The system begins operation; the control unit controls the pneumatic clamp valve to close the inlet of the slurry pipeline, preventing slurry from entering the screens to be cleaned.

[0094] The control unit uses a cylinder control system to extend and retract the cylinders installed on each layer of the screen. The extending and retracting cylinders push the cleaning water pipes to the screen surface, preparing for cleaning. Simultaneously, the control unit adjusts the pressure valve of the variable frequency booster pump to control the water pressure in the cleaning water pipes. The booster pump delivers water into the cleaning water pipes, increasing the water pressure within them.

[0095] One end of the cleaning water pipe is equipped with an adjustable rotating nozzle. As the water pressure increases, the nozzle begins to rotate, spraying high-pressure water onto the screen surface. The nozzle's rotation speed can be adjusted as needed to achieve the best cleaning effect.

[0096] High-pressure water is sprayed onto the screen surface, washing away dirt and solid particles. Simultaneously, the screen's vibration system activates to further clean away impurities. Once cleaning is complete, the control unit shuts off the variable frequency booster pump's pressure valve, stopping water delivery. At the same time, the cylinder retracts, removing the cleaning water pipe from the screen surface. Returning to the initial state, the pneumatic clamp valve opens, allowing the slurry to continue flowing through the pipeline, and the multi-layer screen continues its screening process.

[0097] Reference Figure 2 In the first embodiment, the control method, device, system, and media method of the high-frequency vibrating screen online cleaning system includes the following steps:

[0098] Step S10: When the cleaning process is detected to be triggered, select the target layer to be cleaned from the layers to be cleaned;

[0099] In this embodiment, the screen in the system is arranged in layers. The system selects a certain layer as the target layer to be cleaned according to certain rules. After the cleaning of the layer is completed, another layer is selected as the target layer to be cleaned.

[0100] Optionally, regarding how to select the target layer to be cleaned, a cleaning identifier corresponding to each layer to be cleaned is determined, wherein the cleaning identifiers are marked sequentially from bottom to top; and the layers to be cleaned are selected as the target layers to be cleaned in order from bottom to top according to the marking order of the cleaning identifiers.

[0101] Step S20: Control the pneumatic clamp valve located in the target layer to be cleaned to close, so as to prevent the slurry in the slurry pipeline from flowing out; control the pneumatic valve located in the target layer to be cleaned to open and control the variable frequency booster pump to run at the target power, so that pressurized water flow that meets the target flow rate is sprayed out from the rotating nozzle in the cleaning water pipe;

[0102] In this embodiment, after selecting the target layer to be cleaned, the pneumatic clamp valve located in the target layer to be cleaned is first controlled to close to prevent the slurry in the slurry pipeline from flowing out onto the screen. At the same time, the air pressure valve located in the target layer to be cleaned is controlled to open and the variable frequency booster pump is controlled to run at the target power so that pressurized water flow that meets the target flow rate is sprayed from the rotating nozzle in the cleaning water pipe.

[0103] Optionally, in this embodiment, to improve the cleaning effect and avoid waste, the flow rate of pressurized water sprayed from the rotating nozzle can be adjusted according to the screen mass. Specifically, a pressure sensor for collecting screen mass can be installed on the online cleaning system of the high-frequency vibrating screen. The pressure sensor can be located at a position where the screen mass can be collected, such as at the bottom of the screen placement frame. Specifically and optionally, the target flow rate of the water sprayed from the rotating nozzle is determined based on the acquired screen mass.

[0104] For example, the calculation expressions corresponding to the screen mass M and the target flow velocity V can be as follows:

[0105]

[0106] Wherein, K1, K2, and K3 are characteristic coefficients that characterize the dynamic properties of water flow, A is the surface area of ​​the screen, C is the quantitative value of the degree of screen clogging, and C ranges from 0 to 1, where 0 indicates no clogging and 1 indicates complete clogging, and b is the base flow velocity.

[0107] After calculating the target flow rate corresponding to the current screen mass, the target power of the variable frequency booster pump that meets the target flow rate is determined.

[0108] For example, a table is pre-set between the target flow rate and the target power. The power of the variable frequency booster pump corresponding to the target flow rate can be determined by looking up the table. The target flow rate and the variable frequency booster pump are positively correlated. The following is a table showing the relationship between the two:

[0109] Target power of the variable frequency booster pump (kW) Target flow rate of water sprayed in the spray head (m / s) 0.5 1.2 0.8 1.5 1.0 1.8 1.5 2.2 2.0 2.6 2.5 3.0 3.0 3.6

[0110] By looking up the table to find the target power corresponding to the target water flow rate, the variable frequency booster pump is controlled to operate at the target power, so that the water flow that meets the target flow rate is sprayed out from the rotating nozzle.

[0111] Step S30: Control the cylinder to move within a preset distance range to drive the cleaning water pipe to move within a preset area, and control the rotating nozzle to rotate at a target speed so that the rotating nozzle moves back and forth and rotates to rinse the screen corresponding to the target layer to be cleaned.

[0112] In this embodiment, the control cylinder moves within a preset distance range to drive the cleaning water pipe to move within a preset area, and the control of the rotating nozzle to rotate at a target speed so that the rotating nozzle moves back and forth and rotates to rinse the screen corresponding to the target layer to be cleaned.

[0113] Specifically, the preset distance range can be set based on the length of the screen. For example, for a 1.5m screen, the preset distance range is about 1.5m.

[0114] Optionally, to improve the cleaning effect on the screen, the nozzle is a rotary nozzle with adjustable speed. By rotating, the contact area of ​​the outgoing water flow is increased. The rotary nozzle can adjust the speed according to the target power of the variable frequency booster pump, and the two are positively correlated.

[0115] Step S40: When it is detected that the screen corresponding to the target layer to be cleaned meets the preset cleaning conditions, the air pressure valve is closed and the cylinder stops moving, and the cleaning state of the target layer to be cleaned is set to the completed state.

[0116] In this embodiment, when the screen corresponding to the target layer to be cleaned is detected to meet the preset cleaning conditions, the air pressure valve is closed and the cylinder stops moving, and the cleaning status of the target layer to be cleaned is set to the completed state.

[0117] Optionally, the preset cleaning conditions can be in the following two ways:

[0118] 1. A camera is set up on the system to capture images of the screen, and a visual image algorithm is used to intelligently determine whether the image is clear and complete. Specifically, the screen image captured by the camera is acquired; screen features are extracted from the screen image; the feature similarity between the screen features and the reference screen features is determined; when the feature similarity is greater than a preset similarity threshold, it is determined that the screen corresponding to the target layer to be cleaned meets the preset cleaning conditions.

[0119] II. Threshold Cleaning Duration Determination. Specifically, a preset cleaning duration is obtained; when the control duration of the rotating nozzle and / or the cylinder meets the preset cleaning duration, it is determined that the screen corresponding to the target layer to be cleaned meets the preset cleaning conditions.

[0120] It should be noted that once the target layer to be cleaned is cleaned, the cleaning status of the target layer to be cleaned is set to the completed state, and the system knows that the layer has been cleaned and will no longer perform cleaning processing.

[0121] Step S50: Return to the step of selecting the target layer to be cleaned from the layers to be cleaned, until each cleaning layer is cleaned. The target layer to be cleaned again is different from the target layer to be cleaned in the previous step.

[0122] In this embodiment, after cleaning is completed, another cleaning layer is selected as the target cleaning layer. Optionally, the selected next target cleaning layer can be the layer after the currently completed target cleaning layer; alternatively, the corresponding target screen cleaning layer can be selected based on the identification order of the cleaning identifiers.

[0123] In the technical solution provided in this embodiment, the rotating nozzles and high-pressure water flow in the system effectively clean solid particles and contaminants from the screen surface, maintaining the screen's cleanliness and ensuring screening efficiency and accuracy. This system enables online cleaning of the screen during screening operations without downtime or manual intervention, saving cleaning time and labor costs, and improving production efficiency. Through the PLC control unit, the system can automatically control the cleaning process based on the screen quality. The water pressure in the cleaning pipes can be adjusted as needed, ensuring the stability and adaptability of the cleaning effect while reducing impact on the screen and extending its service life. Furthermore, the adjustable rotation speed of the nozzles can accommodate different types of solid particles and contaminants. By optimizing the use and control of the cleaning water flow, energy and water consumption during the cleaning process can be reduced, lowering production costs and minimizing environmental impact.

[0124] In addition, refer to Figure 3 This embodiment also proposes a control device for an online cleaning system of a high-frequency vibrating screen, the control device of which includes:

[0125] The screen selection module 100 is used to select the target layer to be cleaned when the cleaning process is detected to be triggered.

[0126] The first control module 200 is used to control the pneumatic clamp valve located in the target cleaning layer to close, so as to prevent the slurry from flowing out of the slurry pipeline, control the air pressure valve located in the target cleaning layer to open, and control the variable frequency booster pump to run at the target power, so that pressurized water flow that meets the target flow rate is sprayed out from the rotating nozzle in the cleaning water pipe.

[0127] The second control module 300 controls the cylinder to move within a preset distance range to drive the cleaning water pipe to move within a preset area, and controls the rotating nozzle to rotate at a target speed so that the rotating nozzle moves back and forth and rotates to rinse the screen corresponding to the target layer to be cleaned.

[0128] The third control module 400 is used to control the air pressure valve to close and the cylinder to stop moving when it is detected that the screen corresponding to the target layer to be cleaned meets the preset cleaning conditions, and set the cleaning state of the target layer to be cleaned to the completed state; return to the step of selecting the target layer to be cleaned from the layers to be cleaned, until each cleaning layer is cleaned, wherein the target layer to be cleaned again is different from the target layer to be cleaned in the previous time.

[0129] Furthermore, those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program includes program instructions and can be stored in a storage medium, which is a computer-readable storage medium. The program instructions are executed by at least one processor in the online cleaning system for a high-frequency vibrating screen to implement the process steps of the embodiments of the above methods.

[0130] Therefore, this application also provides a computer-readable storage medium storing a control program for an online cleaning system for a high-frequency vibrating screen. When the control program for the online cleaning system for a high-frequency vibrating screen is executed by a processor, it implements the various steps of the control method for the online cleaning system for a high-frequency vibrating screen as described in the above embodiments.

[0131] The computer-readable storage medium can be any computer-readable storage medium capable of storing program code, such as a USB flash drive, portable hard drive, read-only memory (ROM), magnetic disk, or optical disk.

[0132] It should be noted that, since the storage medium provided in the embodiments of this application is the storage medium used to implement the methods of the embodiments of this application, those skilled in the art can understand the specific structure and variations of the storage medium based on the methods described in the embodiments of this application, and therefore will not be repeated here. All storage media used in the methods of the embodiments of this application fall within the scope of protection of this application.

[0133] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied 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.

[0134] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0135] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0136] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0137] It should be noted that any reference signs placed between parentheses in the claims should not be construed as limiting the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. This application can be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

[0138] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0139] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A control method for an online cleaning system for a high-frequency vibrating screen, characterized in that, An online cleaning system for high-frequency vibrating screens is described. The system includes a slurry pipeline, multiple layers of screens, a PLC control unit, and pressure sensors for collecting screen mass data. Each layer of screens has at least two cylinders installed on both sides of one end to control the extension and retraction of the cleaning water pipe. One end of the cleaning water pipe is equipped with an adjustable-speed rotary nozzle, and the other end is connected to the pneumatic valve of a variable-frequency booster pump. A pneumatic clamp valve is installed at the inlet of the slurry pipeline. The method includes the following steps: When the cleaning process is detected to be triggered, the target layer to be cleaned is selected from the layers to be cleaned; The pneumatic clamp valve located in the target layer to be cleaned is closed to prevent the slurry from flowing out of the slurry pipeline. The pneumatic valve located in the target layer to be cleaned is opened and the variable frequency booster pump is operated at the target power so that pressurized water flow that meets the target flow rate is sprayed from the rotary nozzle in the cleaning water pipe. The step of controlling the variable frequency booster pump to operate at the target power includes: Obtain the screen mass collected by the pressure sensor; The target flow rate of the water jet from the rotating nozzle is determined based on the quality of the screen. Determine the target power of the variable frequency booster pump that satisfies the target flow rate; The variable frequency booster pump is controlled to operate at the target power so that water flow that meets the target flow rate is ejected from the rotary nozzle. The cylinder is controlled to move within a preset distance range to drive the cleaning water pipe to move within a preset area, and the rotating nozzle is controlled to rotate at a target speed so that the rotating nozzle moves back and forth and rotates to rinse the screen corresponding to the target layer to be cleaned. When the screen corresponding to the target layer to be cleaned is detected to meet the preset cleaning conditions, the air pressure valve is controlled to close and the cylinder is stopped moving, and the cleaning status of the target layer to be cleaned is set to the completed state. Return to the step of selecting the target layer to be cleaned from the layers to be cleaned, until each cleaning layer is cleaned, wherein the target layer to be cleaned again is different from the target layer to be cleaned in the previous step.

2. The method as described in claim 1, characterized in that, The step of controlling the rotating nozzle to rotate at a target speed includes: The target rotational speed of the rotary nozzle is determined based on the target power of the variable frequency booster pump. Control the rotating nozzle to rotate at the target rotation speed.

3. The method as described in claim 1, characterized in that, The high-frequency vibrating screen online cleaning system includes a camera for acquiring screen images. Before the step of controlling the air pressure valve to close and the cylinder to stop moving when the screen corresponding to the target cleaning layer meets preset cleaning conditions, thus setting the cleaning state of the target cleaning layer to a completed state, the system further includes: Acquire the screen image captured by the camera; Extract the screen features from the screen image; Determine the feature similarity between the screen features and the reference screen features; When the feature similarity is greater than a preset similarity threshold, it is determined that the screen corresponding to the target layer to be cleaned meets the preset cleaning conditions.

4. The method as described in claim 1, characterized in that, Before the step of controlling the air pressure valve to close and the cylinder to stop moving when the screen corresponding to the target layer to be cleaned is detected to meet the preset cleaning conditions, and setting the cleaning state of the target layer to be cleaned to the completed state, the method further includes: Get the preset cleaning duration; When the control duration of the rotating nozzle and / or the cylinder meets the preset cleaning duration, it is determined that the screen corresponding to the target layer to be cleaned meets the preset cleaning conditions.

5. The method as described in claim 1, characterized in that, Before the step of selecting a target layer to be cleaned from the layers to be cleaned when the cleaning process is detected to be triggered, the method further includes: The cleaning process is triggered when a user-inputted cleaning command is detected; or, The cleaning process is triggered at preset intervals.

6. The method as described in claim 1, characterized in that, The step of selecting the target layer to be cleaned includes: Determine the cleaning identifier corresponding to each layer to be cleaned, wherein the cleaning identifiers are marked sequentially from bottom to top for each layer to be cleaned; Based on the marking order of the cleaning markers, the layers to be cleaned are selected as the target layers to be cleaned in a bottom-up order.

7. The method as described in claim 1, characterized in that, The control device for the online cleaning system of the high-frequency vibrating screen includes: The screen selection module is used to select the target layer to be cleaned when the cleaning process is detected to be triggered. The first control module is used to control the pneumatic clamp valve located in the target cleaning layer to close, so as to prevent the slurry from flowing out of the slurry pipeline, control the air pressure valve located in the target cleaning layer to open, and control the variable frequency booster pump to run at the target power, so that pressurized water flow that meets the target flow rate is sprayed out from the rotating nozzle in the cleaning water pipe. The second control module controls the cylinder to move within a preset distance range to drive the cleaning water pipe to move within a preset area, and controls the rotating nozzle to rotate at a target speed so that the rotating nozzle moves back and forth and rotates to rinse the screen corresponding to the target layer to be cleaned. The third control module is used to control the air pressure valve to close and the cylinder to stop moving when it is detected that the screen corresponding to the target layer to be cleaned meets the preset cleaning conditions, and to set the cleaning status of the target layer to be cleaned to the completed state; and to return to the step of selecting the target layer to be cleaned from the layers to be cleaned until each cleaning layer is cleaned, wherein the target layer to be cleaned again is different from the target layer to be cleaned in the previous step.

8. An online cleaning system for a high-frequency vibrating screen, characterized in that, The high-frequency vibrating screen online cleaning system includes: a memory, a processor, and a control program for the high-frequency vibrating screen online cleaning system stored in the memory and executable on the processor. When the control program for the high-frequency vibrating screen online cleaning system is executed by the processor, it implements the steps of the control method for the high-frequency vibrating screen online cleaning system as described in any one of claims 1 to 7.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a control program for an online cleaning system for a high-frequency vibrating screen, which, when executed by a processor, implements the steps of the control method for an online cleaning system for a high-frequency vibrating screen as described in any one of claims 1 to 7.

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