Sediment uniform distribution and mud taking device based on fluid dynamics and intelligent regulation and control

Abstract

The invention discloses a silt uniform distribution and taking device based on fluid dynamics and intelligent regulation and control, and belongs to the technical field of water quality monitoring and silt treatment. The problem of water quality monitoring distortion caused by uneven sediment distribution is solved. According to the technical scheme, deposited silt is uniformly distributed through a spiral stirrer and a flow guide structure; a submersible pump and a flow regulating valve are used for controlling water flow speed; a flow stabilizer is adopted to stabilize water flow; pipeline sediments are removed through an ultrasonic vibrator and a backwashing system; based on feedback data of the flow sensor and the turbidity sensor, the opening degree of the flow regulating valve and the rotating speed of the spiral stirrer are dynamically regulated by using a double-PID control loop. The device adapts to dynamic working conditions, the service life of the device is prolonged, and the automation level is improved.

Description

Technical Field

[0001] This invention belongs to the field of water quality monitoring and sediment treatment technology, and particularly relates to a sediment sampling device based on fluid dynamics and intelligent control for uniform sediment distribution. Background Technology

[0002] In the fields of water quality monitoring, wastewater treatment, and water conservancy projects, sediment pollution in water bodies has become a key factor affecting water quality. Traditional technologies use sedimentation tanks, filters, or mechanical stirring devices to treat sediment, but these have significant drawbacks in practical applications.

[0003] First, these devices rely on static gravity settling or simple physical filtration, which cannot achieve a dynamic and uniform distribution of sediment in the water flow. For example, at the inlet of a wastewater treatment plant, when the water flow velocity changes abruptly or the sediment concentration increases, traditional equipment is prone to local sediment accumulation, leading to a decrease in the representativeness of the samples, distortion of subsequent water quality monitoring data, and affecting the precise control of the treatment process.

[0004] Secondly, existing technologies are ill-suited to complex operating conditions. In water conservancy projects, water flow velocity fluctuates frequently and sediment concentration changes dynamically. Traditional equipment, lacking real-time control mechanisms, cannot suppress sediment settling when flow velocity increases or prevent pipe blockage when concentration surges, thus increasing equipment maintenance costs and downtime risks.

[0005] Finally, traditional devices generally lack intelligent control functions. Environmental monitoring requires long-term continuous operation, but sedimentation tanks need to be manually cleaned regularly, and mechanical agitators require manual parameter adjustment. This is not only cumbersome to operate, but also leads to increased energy consumption because it cannot respond to changes in water flow parameters in real time.

[0006] The root cause of these problems lies in the fact that existing technologies fail to combine fluid dynamics optimization with closed-loop control mechanisms, thus failing to simultaneously address the needs for uniform sediment distribution, dynamic operating condition adaptation, and automated operation. Achieving stable and uniform sediment distribution is particularly challenging in scenarios with rapid water flow or high sediment concentrations. Forcibly increasing the stirring intensity leads to a surge in energy consumption, while reducing the flow rate exacerbates sedimentation; this contradiction has long constrained the improvement of water treatment equipment efficiency.

[0007] Therefore, there is an urgent need for an intelligent mud-collecting device that can autonomously coordinate sediment distribution, water flow regulation, and cleaning and maintenance, in order to break through the application bottlenecks of traditional technologies. Summary of the Invention

[0008] To address the aforementioned technical problems, this invention proposes a mud sampling device based on fluid dynamics and intelligent control for uniform mud and sand distribution, thereby resolving the issues present in the prior art.

[0009] Firstly, to achieve the above objectives, the present invention provides a method for uniformly distributing mud and sand based on fluid dynamics and intelligent control, comprising the following steps:

[0010] The sediment in the water flow is cut and mixed by a spiral agitator to form a uniformly distributed sediment sample.

[0011] The flow direction is guided by the flow-guiding structure, which optimizes the mixing process and eliminates dead zones;

[0012] Water is drawn by a submersible pump, and the flow rate is controlled by a flow regulating valve.

[0013] The flow stabilizer stabilizes the water flow and reduces turbulence;

[0014] The pipe's inner wall is removed by an ultrasonic vibrator, and the pipe's deposits are removed by a backflushing system.

[0015] The flow velocity is monitored in real time by a flow sensor, and the sediment concentration is monitored in real time by a turbidity sensor.

[0016] Based on feedback data from flow and turbidity sensors, a dual PID control loop is used to adjust the opening of the flow regulating valve and the rotation speed of the spiral agitator, respectively.

[0017] Optionally, the blade angle of the spiral stirrer is 20-45 degrees, and the pitch is 0.5-1.5 times the blade diameter;

[0018] The flow guiding structure is an arc-shaped flow guide plate, the position and shape of which are optimized through numerical model iteration to maximize stirring efficiency and minimize energy loss.

[0019] Optionally, the process of regulating water flow includes:

[0020] The pumping power is adaptively adjusted by a variable frequency submersible pump.

[0021] The water flow rate can be remotely controlled via an electric flow regulating valve;

[0022] The honeycomb flow stabilizer eliminates eddies and reduces pressure loss.

[0023] Optionally, the process of removing sediment includes:

[0024] An ultrasonic vibrator uses a frequency of 20-40kHz to remove deposits.

[0025] The backwashing system triggers high-pressure backwashing based on time cycles or flow thresholds, and the flushing pressure is adjustable.

[0026] Optionally, the dual PID control loop includes:

[0027] First PID loop: Compares the feedback value from the flow sensor with the target flow value and outputs a control signal to the flow regulating valve;

[0028] The second PID loop compares the turbidity sensor feedback value with the target turbidity value and outputs a control signal to the spiral stirrer.

[0029] Optionally, the control process of the second PID loop includes:

[0030] When the turbidity feedback value is lower than the target value, increase the speed of the spiral stirrer;

[0031] When the turbidity feedback value is higher than the target value, reduce the speed of the spiral agitator.

[0032] Secondly, the present invention also provides a mud sampling device based on fluid dynamics and intelligent control for uniform mud distribution, used to implement a mud sampling method based on fluid dynamics and intelligent control for uniform mud distribution, the device comprising:

[0033] The sediment uniform distribution module is used to cut and mix the sediment through a spiral mixer and guide the water flow through a flow guiding structure.

[0034] The hydrodynamic module is used to extract water using a submersible pump and control the flow rate using a flow regulating valve.

[0035] The flow stabilization module is used to reduce water flow turbulence through a flow stabilizer;

[0036] The self-cleaning module is used to remove pipe deposits by ultrasonic vibrators and remove sediment by a backwashing system.

[0037] The monitoring and control module is used to monitor flow rate through a flow sensor, monitor sediment concentration through a turbidity sensor, and adjust the opening of the flow regulating valve and the speed of the spiral agitator based on a dual PID control loop.

[0038] Thirdly, the present invention also provides a computer terminal device, comprising:

[0039] One or more processors;

[0040] A memory, coupled to the processor, for storing one or more programs;

[0041] When the one or more programs are executed by the one or more processors, the one or more processors implement the steps of the mud extraction method based on fluid dynamics and intelligent control in the first aspect above.

[0042] Fourthly, the present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, it implements the steps of the mud extraction method based on fluid dynamics and intelligent control for uniform mud and sand distribution in the first aspect described above.

[0043] Fifthly, the present invention also provides a computer program product, including a computer program, characterized in that, when the computer program is executed by a processor, it implements the steps of the mud extraction method based on fluid dynamics and intelligent control for uniform mud and sand distribution in the first aspect described above.

[0044] Compared with the prior art, the present invention has the following advantages and technical effects:

[0045] This invention provides a method for uniformly distributing sediment in water flow based on fluid dynamics and intelligent control. This invention achieves uniform distribution of sediment particles in water flow, improving the representativeness of the sample; adapts to dynamic changes in water flow velocity and sediment concentration, ensuring stable operation under different working conditions; reduces sediment accumulation inside pipelines and equipment, extending the service life of the device; and reduces the need for manual intervention through real-time monitoring and closed-loop control, improving the efficiency of automated operation. Attached Figure Description

[0046] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0047] Figure 1 This is a schematic diagram of the mud-collecting device for muddy water flow according to an embodiment of the present invention.

[0048] Explanation of reference numerals in the attached figures:

[0049] 11. Spiral agitator; 12. Flow guiding structure; 21. Submersible pump; 22. Flow regulating valve; 23. Flow stabilizer; 31. Ultrasonic vibrator; 32. Backwashing system; 41. Flow sensor; 42. Turbidity sensor; 43. Data acquisition unit; 44. Data processing unit. Detailed Implementation

[0050] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0051] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0052] Example 1

[0053] This embodiment provides a method for uniform sediment distribution sampling based on fluid dynamics and intelligent control, including:

[0054] The spiral stirrer 11 cuts and mixes the sediment in the water flow to form a uniformly distributed sediment sample.

[0055] The water flow direction is guided by the flow guide structure 12, which optimizes the mixing process and eliminates dead zones;

[0056] Water is drawn by submersible pump 21 and the flow rate is controlled by flow regulating valve 22;

[0057] The flow stabilizer 23 stabilizes the water flow and reduces turbulence;

[0058] The ultrasonic vibrator 31 removes the deposits on the inner wall of the pipe, and the backwashing system 32 removes the sediment in the pipe.

[0059] The flow velocity is monitored in real time by the flow sensor 41, and the sediment concentration is monitored in real time by the turbidity sensor 42.

[0060] Based on the feedback data from the flow sensor 41 and the turbidity sensor 42, a dual PID control loop is used to adjust the opening of the flow regulating valve 22 and the rotation speed of the spiral stirrer 11, respectively.

[0061] Specifically, the core of the sludge extraction device of this invention lies in achieving uniform distribution of deposited sediment and the formation of stable water flow through optimized fluid dynamics design and integration of multiple functional modules. The device mainly includes the following key components:

[0062] The system includes a sediment uniform distribution module, a hydrodynamic system, an automatic cleaning module, and a data acquisition and processing system.

[0063] As one embodiment of this invention, the blade angle of the spiral stirrer 11 is 20-45 degrees, and the pitch is 0.5-1.5 times the blade diameter.

[0064] The flow guiding structure 12 is an arc-shaped flow guide plate, the position and shape of which are optimized through numerical model iteration to maximize stirring efficiency and minimize energy loss.

[0065] This embodiment specifically provides a module for uniformly distributing sediment, whose main function is to break up the aggregated state of gravel and sediment deposited in the water, so that the sediment particles are uniformly suspended in the water flow. This module includes:

[0066] (1) Spiral agitator 11: Spiral agitator 11 is a key component for achieving uniform distribution of sediment. It is installed in the water flow channel, and its blades are designed with a special angle and pitch to effectively cut sediment agglomerates in the water flow and generate axial and radial mixing effects.

[0067] (2) Optimization of blade angle and pitch: The choice of blade angle directly affects the mixing efficiency and energy consumption of the agitator. The preferred blade angle range of this invention is 20-45 degrees. An angle within this range can provide sufficient shear force to effectively disperse sediment agglomerates while avoiding energy loss due to over-mixing. The choice of pitch affects the intensity of axial mixing. The preferred pitch range of this invention is 0.5-1.5 times the blade diameter. A pitch within this range can ensure that sediment particles are fully mixed throughout the water flow channel.

[0068] (3) Rotation speed control: The rotation speed of the spiral agitator 11 is adjustable to adapt to different water flow velocities and sediment concentrations. By monitoring the water flow velocity (from the flow sensor 41) and turbidity (from the turbidity sensor 42) in real time, the data processing unit 44 can dynamically adjust the rotation speed of the agitator to achieve the best uniform distribution of sediment under different operating conditions and ensure the representativeness of the sampled or subsequently treated water flow. The rotation speed adjustment is based on the following principles: when a decrease in water flow velocity or an increase in sediment concentration is detected, it indicates that sediment is more likely to deposit or agglomerate. The data processing unit 44 will instruct the spiral agitator 11 to increase its rotation speed to enhance the resuspension and mixing of the deposited sediment; conversely, when the water flow velocity increases or the sediment concentration decreases, the rotation speed can be appropriately reduced to save energy and avoid excessive turbulence.

[0069] (4) Flow guiding structure 12: The flow guiding structure 12 is set before and after the spiral agitator 11. Its function is to guide the water flow, optimize the mixing effect, prevent dead zones in the water flow, and reduce energy loss.

[0070] Guide vane design: The guide structure 12 can take various forms, such as guide vanes, guide cones, etc. This invention preferably uses an arc-shaped guide vane, which can smoothly guide the water flow, reduce turbulence, and improve mixing efficiency.

[0071] Location optimization: This optimization process involves establishing a numerical model including the helical mixer 11, the flow guide structure 12, and the water flow channel to simulate the effects of different positions and shapes of the flow guide structure 12 on the water velocity field, the uniformity of sediment concentration distribution, and the total energy loss of the system. By analyzing and comparing the simulation results, the parameters of the flow guide structure 12 are iteratively optimized to ultimately determine the optimal position and geometry of the flow guide structure 12 that maximizes mixing efficiency, minimizes energy loss, and ensures uniform water flow.

[0072] As one implementation method in this embodiment, the process of regulating water flow includes:

[0073] The pumping power is adaptively adjusted by the variable frequency submersible pump 21;

[0074] The water flow rate is remotely controlled via the electric flow regulating valve 22;

[0075] The honeycomb flow stabilizer 23 eliminates eddies and reduces pressure loss.

[0076] This embodiment specifically provides a hydrodynamic system: this system provides hydrodynamic force to agitate and redistribute sediments, thereby forming a uniform water flow suitable for subsequent treatment or use. The system includes:

[0077] (1) Submersible pump 21: The submersible pump 21 is used to pump water and provide water flow power. The present invention preferably uses a variable frequency submersible pump 21, which can adjust the pump speed according to the sediment concentration and water flow velocity, thereby achieving precise control of water flow.

[0078] Variable frequency control: A numerical model including a spiral mixer 11, a flow guide structure 12, and a water flow channel was established to simulate the effects of different positions and shapes of the flow guide structure 12 on the water flow velocity field, the uniformity of sediment concentration distribution, and the total energy loss of the system. By analyzing and comparing the simulation results, the parameters of the flow guide structure 12 were iteratively optimized, and the optimal position and geometry of the flow guide structure 12 that maximizes mixing efficiency, minimizes energy loss, and ensures uniform water flow was finally determined.

[0079] Anti-clogging design: The submersible pump 21 needs to have a good anti-clogging design to prevent mud and sand particles from entering the pump body and causing damage to the pump.

[0080] (2) Flow regulating valve 22: The flow regulating valve 22 is used to regulate the water flow velocity and control the suspension state of sediment. The present invention preferably uses an electric regulating valve, which can be remotely controlled through a data acquisition and processing system to achieve precise regulation of the water flow.

[0081] (3) Flow stabilizer 23: The flow stabilizer 23 is used to stabilize the water flow, reduce pulsation, and ensure the uniformity of the water flow. The flow stabilizer 23 can take various forms, such as a rectifier grid or a perforated plate. In order to achieve the best flow stabilization effect while taking into account energy loss, this invention conducted a performance comparison study on flow stabilizers 23 with different structures. This comparison study can be carried out through hydraulic model experimental measurement or computational fluid dynamics (CFD) simulation analysis, focusing on comparing the key performance indicators of different flow stabilizers 23 in reducing water flow turbulence, improving the uniformity of flow velocity distribution, and the pressure loss caused. Based on the experimental data comparison or simulation analysis results, this invention preferably adopts a honeycomb rectifier grid, which can effectively eliminate eddies in the water flow, improve the stability of the water flow, and have low energy loss while ensuring a good flow stabilization effect.

[0082] As one implementation method in this embodiment, the process of removing sediment includes:

[0083] The ultrasonic vibrator 31 vibrates at a frequency of 20-40kHz to remove the deposits.

[0084] The backwashing system 32 triggers high-pressure backwashing based on a time period or flow threshold, and the flushing pressure is adjustable.

[0085] This embodiment specifically provides an automatic cleaning function module, which is used to remove sediment, maintain the cleanliness of water flow and pipes, and ensure the long-term stable operation of the device. This module includes:

[0086] (1) Ultrasonic vibrator 31: The ultrasonic vibrator 31 is installed on the inner wall of the pipe and removes the deposits by ultrasonic vibration. The preferred ultrasonic vibrator 31 of the present invention has a frequency of 20-40kHz. Ultrasonic waves in this frequency range can effectively destroy the structure of the deposits and cause them to fall off.

[0087] Transducer selection: The ultrasonic vibrator 31 requires a high-efficiency transducer to ensure effective energy transfer.

[0088] Installation location: The installation location of the ultrasonic vibrator 31 needs to be optimized according to the shape of the pipe and the distribution of the attachments to ensure that it can cover the entire inner wall of the pipe.

[0089] 2) Backflushing System 32: The backflushing system 32 periodically performs backflushing to remove deposits from the pipes. This invention preferably uses high-pressure water flow for backflushing, and the flushing frequency is adjustable to adapt to different operating conditions. The activation of the backflushing system 32 is controlled by the data acquisition and processing system according to preset triggering conditions. These triggering conditions can be based on time, flow rate, or pressure thresholds, etc. Backflushing can be automatically performed at regular intervals (flushing cycles); or when the flow sensor 41 detects that the water flow velocity is lower than a preset threshold (indicating possible blockage). The specific parameters of these triggering conditions can be set and optimized through on-site operating data and experience.

[0090] Flushing pressure: The flushing pressure of the backflushing system 32 needs to be adjusted according to the material of the pipe and the strength of the deposits to avoid damaging the pipe.

[0091] Flushing cycle: The flushing cycle of the backflushing system 32 needs to be adjusted according to the water quality and the rate of sediment accumulation to ensure the cleanliness of the pipeline.

[0092] As one implementation method in this embodiment, the dual PID control loop includes:

[0093] First PID loop: Compare the feedback value of flow sensor 41 with the target flow value, and output a control signal to flow regulating valve 22;

[0094] The second PID loop compares the feedback value from the turbidity sensor 42 with the target turbidity value and outputs a control signal to the spiral stirrer 11.

[0095] As one implementation method in this embodiment, the control process of the second PID loop includes:

[0096] When the turbidity feedback value is lower than the target value, increase the speed of the spiral stirrer 11;

[0097] When the turbidity feedback value is higher than the target value, reduce the speed of the spiral stirrer 11.

[0098] This embodiment specifically provides a data acquisition and processing system: this system is used to monitor parameters such as flow velocity and turbidity in water flow in real time to ensure uniform sediment distribution and stable water flow. The system includes:

[0099] (1) Flow sensor 41: used to measure water flow velocity. The present invention preferably uses an electromagnetic flow meter, which has the advantages of high measurement accuracy, fast response speed and strong anti-interference ability.

[0100] (2) Turbidity sensor 42: used to measure the concentration of sediment in water flow. The present invention preferably uses an optical turbidity sensor 42, which has the advantages of wide measurement range, high sensitivity and good stability.

[0101] (3) Data acquisition unit 43: used to acquire sensor data. The data acquisition unit 43 needs to have the characteristics of high precision, high speed and high reliability.

[0102] (4) Data processing unit 44: Used to process and display data, and adjust the speed of the spiral stirrer 11 and the opening of the flow regulating valve 22 according to the data. The data processing unit 44 can be a PLC, a microcontroller, or a computer, etc.

[0103] The data processing unit 44 requires advanced control algorithms. In this device, the data processing unit 44 mainly constructs two parallel PID control loops: one for controlling the water flow rate (via flow sensor 41 and flow regulating valve 22), and the other for controlling the uniform distribution of sediment (via turbidity sensor 42 and spiral agitator 11). Its implementation steps typically include:

[0104] (1) Periodically collect sensor data (such as flow rate and turbidity).

[0105] (2) Calculate the error between the current measured value and the set target values ​​(target flow rate and target turbidity).

[0106] (3) Calculate the control contributions of the proportional term, integral term and derivative term respectively based on the set proportional gain (Kp), integral gain (Ki) and derivative gain (Kd) parameters.

[0107] (4) Add the contributions of the three items to obtain the total control output value (for example, the output of flow control corresponds to the valve opening command, and the output of sediment distribution control corresponds to the agitator speed command).

[0108] (5) Send the calculated control output value to the corresponding actuator (the driver of the flow regulating valve 22 and the motor driver of the spiral stirrer 11) to drive them to adjust their working state.

[0109] (6) The system continuously executes the above steps in a loop to form a closed-loop control, dynamically responding to changes in water flow and sediment concentration, ensuring stable flow and uniform sediment distribution.

[0110] (7) Through the PID control algorithm, the proportional term can quickly respond to the current deviation, the integral term can eliminate the long-term steady-state error, and the derivative term can predict the error change trend, which helps to suppress oscillation and improve the system response speed and stability.

[0111] Data storage: The data processing unit 44 needs to have data storage capabilities in order to analyze and evaluate historical data.

[0112] By comprehensively applying the above technical solutions, the present invention can effectively redistribute deposited sediment particles and form a uniformly distributed sediment sample in the water flow, thereby providing reliable data support for subsequent applications such as water quality monitoring, equipment efficiency evaluation, and environmental protection.

[0113] Combination Figure 1 Further explanation of the workflow:

[0114] 1. Place the mud-collecting device in a slow-flowing area of ​​the water body, start the submersible pump 21, and extract the water.

[0115] 2. As the water flows through the sediment distribution module, the spiral agitator 11 rotates, distributing the deposited gravel and sediment evenly into the water flow.

[0116] 3. The flow regulating valve 22 regulates the water flow speed, and the flow stabilizer 23 stabilizes the water flow.

[0117] 4. The automatic cleaning function module is activated periodically. The ultrasonic vibrator 31 vibrates, and the backwashing system 32 performs reverse flushing to remove deposits from the pipes and measuring windows.

[0118] 5. The flow sensor 41 and the turbidity sensor 42 monitor the water flow velocity and sediment concentration in real time. The data acquisition unit 43 collects data, the data processing unit 44 processes and displays the data, and adjusts the rotation speed of the spiral agitator 11 and the opening of the flow regulating valve 22 according to the data.

[0119] The following is a description of this embodiment based on specific circumstances:

[0120] I. Application Scenarios

[0121] The influent of a wastewater treatment plant contains a large amount of silt, and the silt is unevenly distributed. This leads to inaccurate water quality monitoring data, affecting the precise control of the wastewater treatment process and increasing treatment costs. To solve this problem, the silt-containing water flow sampling device of this invention is used for water pretreatment and accurate sampling.

[0122] II. Equipment Installation and Commissioning

[0123] 1. Installation location selection

[0124] The sludge removal device is installed in a slower-flowing area at the wastewater treatment plant inlet, where silt deposition is relatively high, which is beneficial for the device to function effectively. Specialized hoisting equipment is used to place the device stably in the designated location and bolts it to the concrete foundation at the inlet, ensuring that the device will not shift under the impact of water flow.

[0125] 2. Electrical Connections

[0126] Connect the power and signal lines of the submersible pump 21, spiral agitator 11, ultrasonic vibrator 31, flow regulating valve 22, flow sensor 41, turbidity sensor 42, data acquisition unit 43, and data processing unit 44 according to the circuit diagram. After connection, perform an insulation test to ensure the electrical system is safe and reliable.

[0127] 3. Parameter Settings

[0128] Initial parameters are set in the data processing unit 44, including the initial rotation speed of the spiral agitator 11, the initial opening degree of the flow regulating valve 22, the operating frequency of the ultrasonic vibrator 31, and the flushing cycle of the backwashing system 32. Based on the water flow velocity and sediment concentration at the inlet, the initial settings are: the rotation speed of the spiral agitator 11 is 100 rpm, the opening degree of the flow regulating valve 22 is 50%, the frequency of the ultrasonic vibrator 31 is 30 kHz, and the flushing cycle of the backwashing system 32 is once every 24 hours.

[0129] III. Equipment Operation Process

[0130] 1. Water extraction and sediment dispersion

[0131] Submersible pump 21 is started and operates stably at a power of 1.5 kW, beginning to draw in the sediment-laden water flow from the inlet. The water flows into the sediment distribution module, where the spiral agitator 11 begins to rotate under the drive of an electric motor. The spiral agitator 11 is made of corrosion-resistant and wear-resistant stainless steel, and its blade design effectively redistributes sediment particles deposited at the bottom into the water flow. As the agitator rotates, the sediment particles gradually form a uniform distribution in the water flow.

[0132] 2. Water flow regulation and stabilization

[0133] When water flows through the flow regulating valve 22, the valve adjusts its opening according to instructions from the data acquisition and processing system to control the water flow velocity. Simultaneously, the flow stabilizer 23 (honeycomb rectifier grid) functions to eliminate eddies in the water flow, stabilize the flow, reduce pulsations, and ensure the uniformity of the flow. In this way, the uniform distribution of sediment in the water is further promoted.

[0134] 3. Automatic cleaning process

[0135] The automatic cleaning module is activated periodically. An ultrasonic vibrator 31, installed on the inner wall of the pipe, vibrates at a frequency of 30kHz, breaking down the structure of deposits on the inner wall and causing them to detach. The backflushing system 32 activates every 24 hours, using high-pressure water to backflush and remove sediment from the pipe. The flushing pressure is adjusted to 2MPa based on the pipe material and sediment intensity to ensure effective removal of sediment without damaging the pipe.

[0136] 4. Data Acquisition and Processing

[0137] Flow sensor 41 (electromagnetic flowmeter) measures water flow velocity in real time, and turbidity sensor 42 (optical turbidity sensor 42) measures sediment concentration in the water flow. Data acquisition unit 43 collects data from the sensors and transmits it to data processing unit 44. Data processing unit 44 uses a PID control algorithm to process and analyze the data, adjusting the rotation speed of spiral agitator 11 and the opening of flow regulating valve 22 in real time according to changes in water flow velocity and sediment concentration. Loop 1: Water flow control. This loop uses a set target flow rate (e.g., a stable flow rate value set according to subsequent treatment or monitoring requirements) as the setpoint and the water flow velocity or flow rate value measured in real time by flow sensor 41 as the feedback value. The PID controller calculates a control output signal based on the deviation (error) between the setpoint and the feedback value. This signal is sent to the electric actuator of flow regulating valve 22 to adjust the valve opening in real time. For example, if the actual flow rate is lower than the target flow rate, the PID controller will increase the valve opening; if the actual flow rate is higher than the target flow rate, it will decrease the opening. Through continuous calculation and adjustment, this circuit enables the actual water flow rate to quickly and stably approach and maintain the set target value.

[0138] Loop Two: Sediment Uniform Distribution Control. This loop uses a target turbidity representing a uniformly suspended state of sediment as the setpoint, and the real-time turbidity value measured by the turbidity sensor 42 is used as the feedback value. It should be noted that this "target turbidity" is not a fixed absolute value, but rather a desired turbidity range or specific value determined through experimentation or calibration at the current flow rate, reflecting the uniform dispersion of sediment. The PID controller calculates another control output signal based on the deviation between the real-time turbidity and the target turbidity. This signal is sent to the motor driver of the spiral agitator 11 to adjust the agitator's rotation speed. For example, if the real-time turbidity is lower than the target turbidity (at a stable flow rate, this may indicate that sediment is settling and not sufficiently dispersed), the PID controller increases the agitator's rotation speed to enhance the resuspension and mixing of the settled sediment; if the real-time turbidity is much higher than the target turbidity (at a stable flow rate, if not due to a sharp increase in source water concentration, this may indicate over-mixing), the rotation speed is appropriately reduced.

[0139] IV. Operational Effectiveness Evaluation

[0140] 1. Even distribution of sediment

[0141] After the device operated for a period of time, water samples were collected from different locations for analysis. The results showed that the distribution of sediment in the water flow was more uniform, and the representativeness of the samples was significantly improved. Compared to when the device was not used, the standard deviation of sediment concentration in the water samples decreased by 50%, indicating that the device effectively achieved uniform sediment distribution.

[0142] 2. Adaptability assessment

[0143] When the water flow velocity and sediment concentration at the inlet of the wastewater treatment plant change, the device can automatically adjust its operating parameters through the variable frequency submersible pump 21, electric regulating valve, and data acquisition and processing system to adapt to different operating conditions. For example, when the water flow velocity at the inlet suddenly increases, the device will automatically increase the power of the submersible pump 21 and the opening of the flow regulating valve 22 to ensure stable water flow and uniform sediment distribution.

[0144] 3. Equipment lifespan assessment

[0145] After long-term operation and observation, due to the effective function of the ultrasonic vibrator 31 and the backwashing system 32, the deposits inside the device are significantly reduced, and the wear and clogging of the equipment are significantly improved. Compared with traditional equipment, the service life of this device is expected to be extended by more than 30%.

[0146] 4. Automation Level Assessment

[0147] The data acquisition and processing system enables real-time monitoring and control of water flow. Operators can view the device's operating parameters and status on a remote monitoring platform and make necessary adjustments. The system's automation level is greatly improved, reducing manual intervention and increasing operational efficiency.

[0148] Through practical application at the inlet of a wastewater treatment plant, the sludge removal device for silt-laden water flow of the present invention effectively solves the problem of uneven silt distribution, improves the accuracy of water quality monitoring, provides reliable data support for the precise control of wastewater treatment processes, and reduces equipment maintenance costs, resulting in significant economic and environmental benefits.

[0149] Through practical application at the inlet of a wastewater treatment plant, the sludge removal device for silt-laden water flow of the present invention effectively solves the problem of uneven silt distribution, improves the accuracy of water quality monitoring, provides reliable data support for the precise control of wastewater treatment processes, and reduces equipment maintenance costs, resulting in significant economic and environmental benefits.

[0150] Based on this, the present invention provides a method for uniform mud and sand distribution sampling based on fluid dynamics and intelligent control. The present invention has the following significant advantages:

[0151] Greater uniformity of sediment distribution: Through the optimized design of the spiral agitator and the flow guiding structure, this invention can achieve a greater uniformity of sediment distribution, thereby improving the representativeness of the sampling.

[0152] Enhanced adaptability: Through variable frequency submersible pumps, electric regulating valves, and data acquisition and processing systems, this invention can adapt to different water flow velocities, sediment concentrations, and operating conditions.

[0153] Longer service life: Through ultrasonic vibrators and backwashing systems, this invention can effectively remove deposits and extend the service life of the equipment.

[0154] Greater level of automation: Through the data acquisition and processing system, the present invention can realize real-time monitoring and control of water flow status, thereby improving the automation level and operating efficiency of the device.

[0155] Example 2

[0156] In this embodiment, a computer terminal device is provided, including:

[0157] One or more processors;

[0158] A memory, coupled to the processor, for storing one or more programs;

[0159] When the one or more programs are executed by the one or more processors, the one or more processors implement the steps of the above-described method for uniform mud and sand distribution based on fluid dynamics and intelligent control.

[0160] In this embodiment, a computer-readable storage medium is also provided, on which a computer program is stored. When the computer program is executed by a processor, it implements the steps of the above-described method for uniform mud and sand distribution based on fluid dynamics and intelligent control.

[0161] In this embodiment, an electronic device is also provided, including a memory and a processor. The memory stores a computer program, and the processor is configured to run the computer program to perform the steps of the above-described method for uniform mud and sand distribution based on fluid dynamics and intelligent control.

[0162] In this embodiment, a computer program product is also provided, including a computer program that, when executed by a processor, implements the steps of the above-described method for uniform mud and sand distribution based on fluid dynamics and intelligent control.

[0163] The aforementioned program can run on a processor or be stored in memory (or a computer-readable medium). Computer-readable media include both permanent and non-permanent, removable and non-removable media, and information storage can be achieved by any method or technology. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transfer medium that can be used to store information accessible by a computing device.

[0164] These computer programs 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 for the functions specified in one or more boxes can be implemented using different modules, and different steps can be implemented using different modules.

[0165] This embodiment provides such a device or system. The device, referred to as a mud sampling device for uniform mud distribution based on fluid dynamics and intelligent control, includes:

[0166] The sediment uniform distribution module is used to cut and mix the sediment through the spiral mixer 11 and guide the water flow through the guide structure 12.

[0167] The hydrodynamic module is used to extract water via submersible pump 21 and control the flow rate via flow regulating valve 22.

[0168] The flow stabilization module is used to reduce water flow turbulence through the flow stabilizer 23;

[0169] The self-cleaning module is used to remove pipe deposits by ultrasonic vibrator 31 and to remove sediment by backwashing system 32.

[0170] The monitoring and control module is used to monitor the flow rate through the flow sensor 41, monitor the sediment concentration through the turbidity sensor 42, and adjust the opening of the flow regulating valve 22 and the rotation speed of the spiral agitator 11 based on the dual PID control loop.

[0171] As one implementation method in this embodiment, the sediment uniform distribution module includes:

[0172] The spiral stirring unit has a blade angle of 20-45 degrees and a pitch of 0.5-1.5 times the blade diameter;

[0173] The flow optimization unit uses an arc-shaped flow guide plate, the position and shape of which are iteratively optimized by numerical model to achieve maximum mixing efficiency and minimum energy loss.

[0174] As one implementation method in this embodiment, the water flow power module includes:

[0175] The variable frequency pumping unit adaptively adjusts its power via the variable frequency submersible pump 21.

[0176] The flow rate control unit remotely controls the water flow rate via an electric flow regulating valve 22.

[0177] The eddy current suppression unit eliminates eddy currents and reduces pressure loss through the honeycomb flow stabilizer 23.

[0178] As one implementation method in this embodiment, the self-cleaning module includes:

[0179] The ultrasonic cleaning unit vibrates at a frequency of 20-40kHz to remove deposits.

[0180] The backwash trigger unit initiates high-pressure backwashing based on a time cycle or flow threshold, and the backwashing pressure is adjustable.

[0181] As one implementation method in this embodiment, the monitoring and control module includes:

[0182] The flow closed-loop control unit compares the flow feedback value with the target value through the first PID loop and outputs a signal to the flow regulating valve 22;

[0183] The sediment distribution control unit compares the turbidity feedback value with the target value through the second PID loop and outputs a signal to the spiral mixer 11.

[0184] As one implementation method in this embodiment, the sediment distribution control unit performs the following:

[0185] When the turbidity feedback value is lower than the target value, increase the speed of the spiral stirrer 11;

[0186] When the turbidity feedback value is higher than the target value, reduce the speed of the spiral stirrer 11.

[0187] The system or apparatus is used to implement the functions of the methods in the above embodiments. Each module in the system or apparatus corresponds to each step in the method, as has been described in the method and will not be repeated here.

[0188] The above-described implementation method solves the problem of uniform mud and sand distribution during mud extraction based on fluid dynamics and intelligent control in related technologies, thereby ensuring that the problems existing in the prior art are resolved.

[0189] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for uniformly distributing mud and sand based on fluid dynamics and intelligent control, characterized in that, Includes the following steps: The sediment in the water flow is cut and mixed by a spiral agitator to form a uniformly distributed sediment sample. The flow direction is guided by the flow-guiding structure, which optimizes the mixing process and eliminates dead zones; Water is drawn by a submersible pump, and the flow rate is controlled by a flow regulating valve. The flow stabilizer stabilizes the water flow and reduces turbulence; The pipe's inner wall is removed by an ultrasonic vibrator, and the pipe's deposits are removed by a backflushing system. The flow velocity is monitored in real time by a flow sensor, and the sediment concentration is monitored in real time by a turbidity sensor. Based on feedback data from flow and turbidity sensors, a dual PID control loop is used to adjust the opening of the flow regulating valve and the rotation speed of the spiral agitator, respectively.

2. The method according to claim 1, characterized in that, The blade angle of the spiral stirrer is 20-45 degrees, and the pitch is 0.5-1.5 times the blade diameter; The flow guiding structure is an arc-shaped flow guide plate, the position and shape of which are optimized through numerical model iteration to maximize stirring efficiency and minimize energy loss.

3. The method according to claim 1, characterized in that, The process of regulating water flow includes: The pumping power is adaptively adjusted by a variable frequency submersible pump. The water flow rate can be remotely controlled via an electric flow regulating valve; The honeycomb flow stabilizer eliminates eddies and reduces pressure loss.

4. The method according to claim 1, characterized in that, The process of removing sediment includes: An ultrasonic vibrator uses a frequency of 20-40kHz to remove deposits. The backwashing system triggers high-pressure backwashing based on time cycles or flow thresholds, and the flushing pressure is adjustable.

5. The method according to claim 1, characterized in that, The dual PID control loop includes: First PID loop: Compares the feedback value from the flow sensor with the target flow value and outputs a control signal to the flow regulating valve; The second PID loop compares the turbidity sensor feedback value with the target turbidity value and outputs a control signal to the spiral stirrer.

6. The method according to claim 5, characterized in that, The control process of the second PID loop includes: When the turbidity feedback value is lower than the target value, increase the speed of the spiral stirrer; When the turbidity feedback value is higher than the target value, reduce the speed of the spiral agitator.

7. A mud sampling device for uniform mud distribution based on fluid dynamics and intelligent control, characterized in that, The device includes: The sediment uniform distribution module is used to cut and mix the sediment through a spiral mixer and guide the water flow through a flow guiding structure. The hydrodynamic module is used to extract water using a submersible pump and control the flow rate using a flow regulating valve. The flow stabilization module is used to reduce water flow turbulence through a flow stabilizer; The self-cleaning module is used to remove pipe deposits by ultrasonic vibrators and remove sediment by a backwashing system. The monitoring and control module is used to monitor flow rate through a flow sensor, monitor sediment concentration through a turbidity sensor, and adjust the opening of the flow regulating valve and the speed of the spiral agitator based on a dual PID control loop.

8. A computer terminal device, characterized in that, include: One or more processors; A memory, coupled to the processor, for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors perform the steps of the method as described in any one of claims 1-6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method as described in any one of claims 1-6.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1-6.

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