Coal slime water pressure filter system

Abstract

The invention relates to the technical field of water treatment and discloses a coal slime water filter pressing system. The coal slime water filter pressing system comprises a filter press, a jet flow generation assembly, a detection assembly and a control system. The filter press is used for carrying out filter pressing on slime water to form a filter cake and separating filtrate, the jet flow generation assembly is connected with the filter press and can output a pulse jet flow medium and enable the pulse jet flow medium to impact the filter cake, and the detection assembly is connected with the filter press and is used for detecting operation state parameters of the filter press and outputting a detection signal. The control system is electrically connected with the jet generation assembly and the detection assembly, and the control system is used for receiving the detection signal and controlling at least one of the frequency parameter and the action time of the pulse jet medium. According to the coal slime water pressure filtration system, the pressure filtration period is shortened, and the water content of the filter cake and the overall energy consumption are reduced.

Description

Technical Field

[0001] This invention belongs to the field of water treatment technology, specifically relating to a coal slurry water pressure filtration system. Background Technology

[0002] Coal slurry is a suspension containing a large number of fine coal slurry particles produced during coal washing. A chamber filter press is currently the core equipment for treating coal slurry. It applies high pressure to the coal slurry in the filter chamber, forcing the water through the filter cloth to become filtrate, while solid particles are trapped to form a filter cake. During filtration, as the filter cake thickens and compacts, and as fine particles easily clog the filter cloth, the filtration rate drops rapidly.

[0003] In related technologies, water jet-assisted cell disruption methods are employed, such as spraying high-pressure water jets onto the surface or inside the filter cake to break down its structure. However, these methods often use continuous jets or single-frequency pulsed jets, which experience rapid energy decay in submerged environments, have limited effective range, and easily create new erosion grooves on the filter cake surface rather than uniformly improving the overall permeability of the filter cake. A single pulse frequency is insufficient to simultaneously achieve both continuous unblocking of surface micropores and strong disruption of deep structures. Furthermore, directly introducing high-pressure water from the outside dilutes the coal slurry water within the filter chamber, increasing the load on subsequent treatment and resulting in poor economic efficiency. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention propose a coal slurry water pressure filtration system that shortens the filtration cycle, reduces filter cake moisture content, and lowers overall energy consumption.

[0005] The coal slurry water pressure filtration system of this invention includes a filter press, a jet generating component, a detection component, and a control system. The filter press is used to filter coal slurry water to form a filter cake and separate the filtrate. The jet generating component is connected to the filter press and can output a pulse jet medium to impact the filter cake. The detection component is connected to the filter press and is used to detect the operating status parameters of the filter press and output a detection signal. The control system is electrically connected to the jet generating component and the detection component and is used to receive the detection signal and control at least one of the frequency parameter and the action time of the pulse jet medium.

[0006] The coal slurry water pressure filter system of this invention uses intelligently controlled pulse jets to dynamically intervene in the pressure filter process, thereby shortening the pressure filter cycle, reducing the moisture content of the filter cake, and lowering the overall energy consumption.

[0007] In some embodiments, the jet generating assembly includes a power source, a nozzle, and a pulse control device. The power source provides a pressurized working medium. The nozzle has an input end and an output end. The input end is connected to the power source, and the output end is connected to the filter chamber of the filter press. The output end can output the pulse jet medium and impact the filter cake in the filter chamber. The pulse control device is located between the nozzle and the filter chamber and is used to control at least one of the frequency parameter and the action time.

[0008] In some embodiments, the nozzle is a self-priming self-excited oscillating nozzle, the self-priming self-excited oscillating nozzle has a negative pressure port, the negative pressure port can absorb the filtrate and / or air, and the pulse jet medium output by the self-priming self-excited oscillating nozzle is a composite pulse jet medium. In some embodiments, the pulse control device is a pulse solenoid valve; In some embodiments, the power source is at least one of a water pump and an air pump.

[0009] In some embodiments, the working medium includes at least one of water and air; In some embodiments, the composite pulse jet medium includes a first medium and a second medium, wherein the first medium has a frequency of 200Hz-1200Hz and is used to impact the surface of the filter cake, and the second medium has a frequency of 0.5Hz-50Hz and is used to impact the deeper layers of the filter cake.

[0010] In some embodiments, the detection component includes at least one of a pressure sensor, a flow meter, and a vibration sensor.

[0011] In some embodiments, the operating status parameters include at least one of the vibration data of at least a portion of the filter press structure, the pressure value of the filter chamber, and the flow rate of the filtrate.

[0012] In some embodiments, the filter press includes a first feed pipe and a second feed pipe, both of which are connected to the filter chamber. The first feed pipe is used to input coal slurry water into the filter chamber, and the second feed pipe is connected to the output end to input the pulse jet medium into the filter chamber.

[0013] In some embodiments, the vibration sensor is disposed on the first feed pipe and / or the second feed pipe for detecting vibration data of the corresponding pipe.

[0014] In some embodiments, the control system includes a data acquisition module, a decision module, and an execution module. The data acquisition module is used to receive the detection signal containing the operating status parameters. The decision module is connected to the data acquisition module. Based on the operating status parameters, the decision module can predict the changing trend of the parameter values ​​of the filter cake and output a control command to optimize the parameter values. The control command includes at least one of the frequency parameter and the action time. The execution module is connected to the decision module and is used to drive the pulse control device to make the frequency parameter and the action time meet the requirements of the control command.

[0015] In some embodiments, the decision module includes a state recognition model and a deep learning model. The state recognition model can determine the filtration process and the porosity value of the filter cake based on the operating state parameters. The deep learning model can predict the change in the porosity value and output a control command containing at least one of the frequency parameters and the action time in a specific filtration process.

[0016] In some embodiments, the action time includes at least one of the start time, duration, and stop time of the pulse jet medium.

[0017] In some embodiments, the frequency parameter includes at least one of the main frequency value and the frequency distribution.

[0018] The coal slurry water pressure filtration system of this invention significantly improves filtration efficiency and economic benefits by introducing intelligent pulse jet technology. The system can automatically adjust the frequency and duration of the pulse jet based on real-time monitored parameters such as filter chamber pressure and filtrate flow rate, achieving precise and efficient loosening of the filter cake from the surface to the deeper layers. This not only greatly shortens the filtration cycle and increases processing capacity but also effectively reduces the final moisture content of the filter cake. Simultaneously, the self-excited oscillating nozzles used in the system can recycle the filtrate, reducing external clean water consumption and subsequent treatment load, significantly lowering overall energy consumption and operating costs, and achieving a balance between high efficiency, energy saving, and economy. Attached Figure Description

[0019] Figure 1 This is an overall schematic diagram of the coal slurry water pressure filter system according to an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the filter press in the coal slurry water filter press system of this invention.

[0021] Figure 3 This is a schematic diagram of the jet generation component in the coal slurry water pressure filter system according to an embodiment of the present invention.

[0022] Figure 4 This is a comparison of the effects of pressure filtration in the embodiments of the present invention with that of traditional pressure filtration.

[0023] Figure label: 1. Filter press; 2. Jet generating assembly; 21. Power source; 22. Nozzle; 23. Pulse control device; 221. Input end; 222. Output end; 3. Detection components; 4. Control system; 11. First feed pipe; 12. Second feed pipe; 13. Freshwater tank; 14. Coal slurry water tank; 15. Filtration tank; 16. Liquid receiving tank; 17. Feeding assembly; 18. Flushing assembly; 19. Hydraulic components. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] like Figures 1-3 As shown, the coal slurry water pressure filtration system of this embodiment includes a filter press 1, a jet generating component 2, a detection component 3, and a control system 4. The filter press 1 is used to filter coal slurry water to form a filter cake and separate the filtrate. The jet generating component 2 is connected to the filter press 1 and can output a pulsed jet medium that impacts the filter cake. The detection component 3 is connected to the filter press 1 and is used to detect the operating status parameters of the filter press 1 and output a detection signal. The control system 4 is electrically connected to the jet generating component 2 and the detection component 3. The control system 4 is used to receive the detection signal and control at least one of the frequency parameters and the duration of the pulsed jet medium.

[0026] The filter press operation in this embodiment is as follows: First, the filter press 1 includes a fresh water tank 13, a coal slurry water tank 14, a filtrate tank 15, a receiving tank 16, a feeding assembly 17, a flushing assembly 18, and a hydraulic assembly 19. During the operation of the filter press 1, the coal slurry water in the coal slurry water tank 14 is first drawn by the pump and pipes in the feeding assembly 17 and transported to the filter chamber through the main feed pipe (hereinafter referred to as the first feed pipe 11), quickly filling the filter chamber. After filling, the feeding assembly 17 continues to slowly feed the filter to achieve pressure-maintaining filtration. In this embodiment, during the pressure-maintaining process, the feeding assembly 17 can be closed, and the jet generating assembly 2 can perform pressure-maintaining filtration and simultaneously impact the filter cake to improve the filtration effect. During the filtration process, the hydraulic assembly 19 keeps the filter frame stationary. After filtration is completed, the filter frame is moved to allow the filter cake to detach. The filter press 1 also includes components such as a rinsing assembly 18 and a filtrate tank 15. When needed, the rinsing assembly 18 rinses the filter frame, filter cloth, etc., and the filtrate is collected through the filtrate tank 15 and flows into the filtrate tank 15.

[0027] The core working principle of this coal slurry water pressure filtration system lies in the intelligent control of pulse jet flow medium intervention during the pressure filtration process. In operation, the coal slurry water is first subjected to conventional pressure filtration through the filter press 1 to form an initial filter cake. Simultaneously, the detection component 3 monitors the operating status of the filter press 1 in real time, for example, by monitoring the filter chamber pressure through a pressure sensor installed on the filter chamber and monitoring the instantaneous flow rate of the filtrate through a flow meter on the pipeline, among other operating status parameters.

[0028] When the control system 4, such as an industrial PLC, receives these detection signals and determines that the filtrate flow rate has dropped to a preset threshold, it indicates that the filter cake resistance has increased and the filtration rate has begun to decline. At this time, the control system 4 immediately sends a command to the jet generator component 2 to start the pulse jet medium to impact the filter cake. The jet's action time and frequency parameters are closely linked to the filtration process and the state of the filter cake. For example, it is started in the later stages of filtration when the filter cake gradually densifies, rather than at the beginning of filtration. Traditional filter presses 1 generally require a pressure holding process of up to 2-3 hours to complete filtration. This system introduces the pulse jet medium in the later stages of filtration, simultaneously performing filtration and impacting the filter cake. Through predictive intervention and precise energy delivery, this system can disrupt the filter cake structure, clear drainage channels, and prevent filter cloth blockage at the most critical time, thereby effectively maintaining a high filtration rate. The overall filtration cycle can be shortened by 30% to 50%, and the moisture content of the final filter cake can be effectively reduced.

[0029] In some embodiments, the jet generating assembly 2 includes a power source 21, a nozzle 22, and a pulse control device 23. The power source 21 is used to provide a pressurized working medium. The nozzle 22 has an input end 221 and an output end 222. The input end 221 is connected to the power source 21, and the output end 222 is connected to the filter chamber of the filter press 1. The output end 222 can output a pulse jet medium and impact the filter cake in the filter chamber. The pulse control device 23 is disposed between the nozzle 22 and the filter chamber and is used to control at least one of the frequency parameter and the action time.

[0030] This embodiment of the coal slime water pressure filtration system specifies the jet generating component 2. For example, the power source 21 can be a high-pressure water pump with a rated pressure of 2 MPa, providing water flow as the working medium. The nozzle 22 is connected to the outlet pipe of the water pump through its input end 221, while the output end 222 leads directly to the filter chamber of the filter press 1.

[0031] Nozzle 22 itself can convert continuous fluid passing through it into a pulsed jet. For example, a self-priming, self-excited oscillating nozzle 22 can be used. The flow rate through nozzle 22 is controlled by pulse control device 23 to adjust the frequency of the pulsed jet and precisely generate the desired composite frequency waveform of the pulsed jet medium. Alternatively, nozzle 22 can be a common conical nozzle or a straight-tube nozzle, and the pulse control device 23 can be used to convert continuous fluid into a pulsed jet. For example, a pulse solenoid valve can be used. Control system 4 sends a series of signals to the solenoid valve to cut the continuous water flow into pulsed jets. By adjusting the duty cycle and frequency of the control signal, the duration, interval, and impact frequency of the pulsed jet can be precisely controlled.

[0032] In some specific embodiments, the filter press 1 is equipped with a moving system, which includes accessories such as tracks and trolleys. A nozzle 22 is fixed on the trolley, and the moving system drives one nozzle 22 to move and connect to each chamber. The chambers need to have pre-installed connectors, which are quick-release connectors, to enable the pulse medium to be delivered into the chambers. Alternatively, the output end 222 of the nozzle 22 can be simultaneously connected to multiple chambers through pipes.

[0033] In some embodiments, the nozzle 22 is a self-priming self-excited oscillating nozzle 22, which has a negative pressure port that can absorb filtrate and / or air, and the pulse jet medium output by the self-priming self-excited oscillating nozzle 22 is a composite pulse jet medium.

[0034] In this embodiment, the nozzle 22 is preferably a self-priming, self-excited oscillating nozzle 22. This nozzle 22 has a special internal chamber structure that generates self-excited oscillation when high-pressure water flows through, thereby converting the continuous jet into a pulsed jet, and the generated pulsed jet contains jets oscillating at multiple frequencies. More importantly, the nozzle 22 is equipped with a negative pressure port, which is connected to the filtrate collection tank via an auxiliary pipe. When the jet is ejected, a vacuum effect is generated at the negative pressure port, automatically drawing in a portion of the filtrate and mixing it with the main jet. The drawn-in filtrate also enhances the turbulence, thus forming a stronger pulsed jet. Furthermore, the filtrate and the working medium form a solid-liquid two-phase composite pulsed jet medium. This achieves internal recycling of the filtrate, enhancing the jetting effect while avoiding the introduction of external clean water to dilute the coal slurry water, reducing the load on subsequent water treatment, and making it more economical and environmentally friendly.

[0035] The coal slurry water pressure filtration system of this embodiment uses jet media containing multiple frequencies to enable pulse jets of different frequency bands to induce fatigue fractures and microcracks in different areas of the filter cartridge, rather than simply creating a groove on the surface, thereby improving the overall permeability of the filter cake.

[0036] In some embodiments, the pulse control device 23 is a pulse solenoid valve with a fast response speed, and its switching frequency can be adjusted in the range of 1 Hz to 1000 Hz.

[0037] In some embodiments, the power source 21 is at least one of a water pump and an air pump. The working medium includes at least one of water and air. A water pump can be used to provide a water jet, an air pump can be used to provide a pneumatic pulse, or a combination of both can be used.

[0038] In some embodiments, the composite pulse jet medium includes a first medium and a second medium, wherein the frequency of the first medium is 200Hz-1200Hz and is used to impact the surface of the filter cake, and the frequency of the second medium is 0.5Hz-50Hz and is used to impact the deeper layers of the filter cake.

[0039] The composite pulse jet generated by the coal slime hydraulic filtration system of this invention comprises two frequency bands. The first is a relatively high-frequency jet in the range of 200 Hz to 1200 Hz, whose main function is to impact and disturb the surface structure of the filter cake, effectively removing fine coal slime particles that clog the surface of the filter cloth pores, thus providing immediate unblocking and preventing filter cloth clogging. The second is a low-frequency jet in the range of 0.5 Hz to 50 Hz, which has high single-pulse energy and a long duration, allowing it to penetrate deeper into the filter cake like a hammer blow, disrupting the stable skeletal structure formed inside the filter cake and creating more macroscopic drainage fissures. In practical applications, the control system 4 can control the jet generating component 2 to alternately output these two different frequency bands of jets, or superimpose them to form a composite effect that combines high-frequency unblocking and low-frequency breaking, achieving comprehensive treatment of the filter cake from the surface to the interior, greatly improving dewatering efficiency.

[0040] In some embodiments, the detection component 3 includes at least one of a pressure sensor, a flow meter, and a vibration sensor. Operating status parameters include at least one of vibration data of at least a portion of the structure of the filter press 1, pressure values ​​of the filter chamber, and flow rates of the filtrate.

[0041] The detection component 3 in the coal slurry water pressure filter system of this embodiment of the invention has a variety of different sensors, such as a pressure sensor installed at the filter chamber inlet to monitor real-time pressure changes during the pressure filtration process, with a pressure range typically from 0 to 2.5 MPa; an electromagnetic flow meter installed on the filtrate outlet pipeline to monitor the instantaneous and cumulative flow of the filtrate; and a vibration sensor installed on the feed pipe or the frame of the filter press 1 to collect vibration signals during equipment operation. These operating status parameters are key indicators reflecting the pressure filtration process and the state of the filter cake. For example, an increase in filter chamber pressure coupled with a decrease in filtrate flow usually indicates that the filter cake has formed and begun to compact; and changes in the vibration characteristics of the feed pipe are also closely related to the internal structural state of the filter cake and the frequency of the pulse jet medium. These signals are transmitted to the control system 4 in real time, providing the most direct data basis for the decision-making of the control system 4.

[0042] In some embodiments, the filter press 1 includes a first feed pipe 11 and a second feed pipe 12, both of which are connected to the filter chamber. The first feed pipe 11 is used to input coal slurry into the filter chamber, and the second feed pipe 12 is connected to the output end 222 for inputting pulse jet medium into the filter chamber. Vibration sensors can also be installed in the non-filtration area of ​​the filter frame.

[0043] In the coal slurry filtration system of this embodiment, the filter press 1 is equipped with two independent feed pipes. The first feed pipe 11 is directly connected to the coal slurry supply pump, responsible for rapidly filling the filter chamber with coal slurry water in the initial stage of filtration. In the middle and later stages of filtration, the first feed pipe 11 can be closed, and the second feed pipe 12 delivers pulse jet medium for pressure filtration. This physically isolated pipe design ensures that the coal slurry water feeding and the jet auxiliary function do not interfere with each other, and the jet can be started and stopped independently at any stage of filtration according to process requirements. For example, the main frequency value of the pulse jet medium can be adjusted in the middle of filtration to make the first medium in the pulse jet medium dominate the composition, so as to prevent filter cloth clogging. Alternatively, the main frequency value of the pulse jet medium can be adjusted in the later stage of filtration to make the second medium in the pulse jet medium dominate the composition for deep dewatering, making the operation very flexible.

[0044] In some embodiments, vibration sensors are disposed on the first feed pipe 11 and / or the second feed pipe 12 to detect vibration data of the corresponding pipes.

[0045] The coal slurry water filter press system of this invention is equipped with a vibration sensor, such as an ICP accelerometer, which is directly installed on the wall of the first feed pipe 11 and / or the second feed pipe 12. This allows for a more direct and indirect reflection of the vibration data of the filter press 1 by detecting the vibration data of the first feed pipe 11 and the second feed pipe 12. In particular, the pulse jet medium flowing through the second feed pipe 12 can also generate vibration in the second feed pipe 12. Combined with the vibration of the filter press 1 itself at different stages, the two vibrations are superimposed and fed back, meaning the pulse jet medium acts as a "probe."

[0046] In the specific filtration process, as the filter cake thickness and density increase, the fluid resistance within the filter chamber changes. This change is transmitted to the feed pipe, causing alterations in the pipe's vibration frequency and amplitude. By monitoring the characteristic values ​​of these vibration signals, such as the effective vibration value or energy changes in a specific frequency band, the formation state of the filter cake and parameters such as densification and porosity can be indirectly inferred. This facilitates the control system's ability to judge the filtration process and promptly start, stop, maintain, and adjust the frequency of the pulse jet.

[0047] In some embodiments, the control system 4 includes a data acquisition module, a decision module, and an execution module. The data acquisition module is used to receive detection signals containing operating status parameters. The decision module is connected to the data acquisition module. Based on the operating status parameters, the decision module can predict the changing trend of the filter cake parameter values ​​and output control instructions to optimize the parameter values. The control instructions include at least one of frequency parameters and action time. The execution module is connected to the decision module and is used to drive the pulse control device 23 to make the frequency parameters and action time meet the requirements of the control instructions.

[0048] In the coal slurry water pressure filtration system of this invention, the data acquisition module is responsible for receiving analog or digital signals from all sensors and performing filtering, amplification, and analog-to-digital conversion. The decision module, the brain of the system, has a built-in algorithm that can predict the future trend of key filter cake parameters, such as porosity, based on received operating status parameters, such as the decreasing trend of filtrate flow and the increasing rate of filter chamber pressure. Once it is predicted that the porosity will decrease to a critical point affecting filtration efficiency, the decision module immediately generates a control command containing the appropriate jet frequency and optimal action time. The execution module, typically a digital output unit, receives the command and drives the pulse solenoid valve to actuate, ensuring that the jet parameters precisely meet the control requirements. This achieves a complete closed-loop automatic control from sensing, analysis to execution.

[0049] In some embodiments, the decision-making module includes a state recognition model and a deep learning model. The state recognition model, such as an LSTM model, can determine the porosity value of the filtration process and the filter cake based on the operating state parameters. The deep learning model, such as a CNN model, can predict changes in the porosity value and output control commands containing at least one of the following during a specific filtration process: frequency parameters, energy values, and action time. For example, "In the next 100 seconds, increase the energy value of the pulse jet medium to the maximum, with a target main frequency value of 38Hz."

[0050] The coal slurry water pressure filtration system of this invention optimizes the decision-making module by introducing advanced model algorithms. For example, the state recognition model can be an expert system or machine learning model trained on a large amount of historical data. It can comprehensively determine the current stage of the pressure filtration process based on real-time input data from multiple sources such as pressure, flow rate, and vibration, such as "initial filling period," "main pressure filtration period," or "pressing and dewatering period," and can estimate the average porosity of the current filter cake. A deep learning model, such as a recurrent neural network, uses the output of the state recognition model to learn and predict how the porosity will evolve in subsequent processes. When the model predicts that a decrease in porosity will lead to a significant reduction in filtration efficiency, it will automatically output an optimized control command at a specific pressure filtration process node. The command clearly specifies the jet frequency to be used, when to start, and for how long, thereby achieving forward-looking, adaptive optimization control that surpasses traditional fixed-program or threshold control.

[0051] In some embodiments, the action time includes at least one of the pulse jet medium’s start-up time, duration, and stop time, and the frequency parameter includes at least one of the main frequency value and frequency distribution.

[0052] In the coal slurry water pressure filter system of this invention, the action time includes at least three independently settable time parameters: the start time of the pulse jet, for example, starting at 300 seconds after the start of pressure filtration; the duration of each jet, for example, each pulse lasts 0.5 seconds; and the final stop time, for example, stopping 60 seconds before the end of pressure filtration. The frequency parameters include a dominant frequency value, for example, setting a base impact frequency of 500 Hz; and a frequency distribution, for example, the instruction can require 800 Hz as the dominant frequency value within one jet cycle, with other frequency values ​​used as auxiliary, forming a pulse jet medium with multiple frequencies. Alternatively, within one jet cycle, 800 Hz can be used as the dominant frequency value for the first 80% of the time, and 20 Hz as the dominant frequency value for the last 20% of the time, with other frequency values ​​used as auxiliary, forming a more refined control. Through refined programming control of these parameters, the most precise and effective intervention on the filter cake structure can be achieved to achieve the best dewatering effect and energy efficiency ratio.

[0053] The overall performance of the coal slime water pressure filtration system according to this invention embodiment is summarized as follows: 1. Self-aspirating enhanced multi-frequency pulse jet: A self-aspirating, self-excited oscillating nozzle 22 is used to draw in the filtrate from the filter chamber using the Venturi effect, forming a mixed jet with higher kinetic energy and lower solid phase, overcoming environmental energy attenuation. At the same time, a composite pulse containing high-frequency (maintaining the channel) and low-frequency (wall-breaking and opening) components is emitted to synergistically destroy the filter cake from the microscopic to the macroscopic level.

[0054] 2. Dynamic optimization based on deep learning: The operating status parameters (pressure value, flow value, vibration data) of the filter press process are input into the deep learning model. The model aims to shorten the filter press cycle and outputs the control command of the optimal jet main frequency value in real time to achieve adaptive control under the maximization of global benefits.

[0055] 3. State perception based on impact response spectrum: The pulse jet is used as both an "actuator" and a "probe". By analyzing the vibration response spectrum generated by its impact on the filter cake, a deep learning model is used to identify key states of the filter cake such as compaction and porosity in real time and non-destructively, and even estimate its composition (such as calorific value), making the process "white-box".

[0056] 4. Predictive Intervention Strategy: Based on state-aware results, the deep learning model predicts the "inflection point" when filtration resistance is about to rise sharply. Before the inflection point arrives, the system switches to a strong fragmentation mode in advance to actively destroy the dense layer, nipping the upward trend of resistance in the bud, thereby effectively extending the high filtration rate plateau period. This is the key to achieving "rapid" pressure filtration.

[0057] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0058] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0059] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0060] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0061] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0062] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A coal slurry water pressure filtration system, characterized in that, include: Filter press (1) is used to filter coal slurry water to form a filter cake and separate the filtrate; A jet generating component (2) is connected to the filter press (1). The jet generating component (2) can output a pulse jet medium and cause the pulse jet medium to impact the filter cake. The detection component (3) is connected to the filter press (1) and is used to detect the operating status parameters of the filter press (1) and output a detection signal; The control system (4) is electrically connected to the jet generating component (2) and the detection component (3). The control system (4) is used to receive the detection signal and control at least one of the frequency parameters and the duration of action of the pulse jet medium.

2. The coal slime water pressure filtration system according to claim 1, characterized in that, The jet generating component (2) includes: Power source (21) is used to provide pressurized working medium; The nozzle (22) has an input end (221) and an output end (222). The input end (221) is connected to the power source (21), and the output end (222) is connected to the filter chamber of the filter press (1). The output end (222) can output the pulse jet medium and impact the filter cake in the filter chamber. A pulse control device (23) is disposed between the nozzle (22) and the filter chamber for controlling at least one of the frequency parameter and the action time.

3. The coal slime water pressure filtration system according to claim 2, characterized in that, The nozzle (22) is a self-priming self-excited oscillating nozzle. The self-priming self-excited oscillating nozzle has a negative pressure port. The negative pressure port can absorb the filtrate and / or air. The pulse jet medium output by the self-priming self-excited oscillating nozzle is a composite pulse jet medium. And / or, the pulse control device (23) is a pulse solenoid valve; And / or, the power source (21) is at least one of a water pump and an air pump. And / or, the working medium includes at least one of water and air.

4. The coal slime water pressure filtration system according to claim 3, characterized in that, The composite pulse jet medium includes a first medium and a second medium, wherein the frequency of the first medium is 200Hz-1200Hz and is used to impact the surface of the filter cake, and the frequency of the second medium is 0.5Hz-50Hz and is used to impact the deeper layers of the filter cake.

5. The coal slime water pressure filtration system according to claim 1, characterized in that, The detection component (3) includes at least one of a pressure sensor, a flow meter, and a vibration sensor; And / or, the operating status parameters include at least one of the vibration data of at least a portion of the structure of the filter press (1), the pressure value of the filter chamber, and the flow rate of the filtrate.

6. The coal slime water pressure filtration system according to claim 5, characterized in that, The filter press (1) includes a first feed pipe (11) and a second feed pipe (12). Both the first feed pipe (11) and the second feed pipe (12) are connected to the filter chamber. The first feed pipe (11) is used to input coal slurry water into the filter chamber, and the second feed pipe (12) is connected to the output end (222) to input the pulse jet medium into the filter chamber.

7. The coal slime water pressure filtration system according to claim 6, characterized in that, The vibration sensor is installed on the first feed pipe (11) and / or the second feed pipe (12) to detect the vibration data of the corresponding pipe.

8. The coal slime water pressure filtration system according to any one of claims 1-7, characterized in that, The control system (4) includes: A data acquisition module is used to receive the detection signal containing the operating status parameters; The decision module is connected to the data acquisition module. Based on the operating status parameters, the decision module can predict the changing trend of the parameter values ​​of the filter cake and output control instructions to optimize the parameter values. The control instructions include at least one of the frequency parameter and the action time. An execution module, which is connected to the decision module, is used to drive the pulse control device (23) so that the frequency parameter and the action time meet the requirements of the control command.

9. The coal slime water pressure filtration system according to claim 8, characterized in that, The decision-making module includes: A state recognition model is used to determine the filtration process and the porosity of the filter cake based on the operating state parameters. A deep learning model that can predict changes in the porosity value and output control commands including at least one of the frequency parameter and the action time during a specific filtration process.

10. The coal slime water pressure filtration system according to claim 9, characterized in that, The action time includes at least one of the start time, duration, and stop time of the pulse jet medium; And / or, the frequency parameters include at least one of the main frequency value and frequency distribution.

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