Operation control method of fine screen screw conveyor for sewage treatment

Abstract

This invention discloses an operation control method for a fine screen screw conveyor for wastewater treatment, relating to the field of wastewater treatment technology. The invention includes the following steps: adjustment of the control system; configuration of the timer module; establishment of a dynamic adjustment mechanism; monitoring of operating status; effect evaluation; maintenance and optimization. This invention precisely controls the running and stopping times of the screw conveyor through the timer module, avoiding ineffective operation when there is little or no screenings, significantly reducing energy consumption, achieving efficient energy utilization, reducing unnecessary equipment operating time, reducing wear on mechanical parts, extending equipment lifespan, and lowering maintenance and replacement costs. A flow sensor monitors the screenings discharge in real time, feeding the data back to the control system to dynamically adjust the ratio of running and stopping times, ensuring the equipment is always in optimal operating condition. Based on changes in screenings discharge, the operating mode is adjusted promptly to improve screenings treatment efficiency.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, and in particular relates to an operation control method for a fine screen screw conveyor for wastewater treatment. Background Technology

[0002] Fine screen screw conveyors are widely used in urban wastewater treatment plants and industrial wastewater treatment systems, primarily for separating solid materials such as garbage and cellulose from wastewater; these solid materials are commonly referred to as screenings. Traditional fine screen screw conveyors often operate continuously, meaning they run until manually shut down after startup. While this method is simple and easy to implement, it presents some significant problems in practical applications:

[0003] Because the amount of screenings produced in wastewater is not constant but has peak and trough periods throughout the day, continuous operation can lead to significant energy consumption even when there is little or no screenings being discharged, resulting in unnecessary energy waste. Prolonged continuous operation accelerates equipment wear, especially for critical components such as the spiral blades. Excessive wear not only increases maintenance and replacement costs but may also affect the efficiency and quality of wastewater treatment. In traditional continuous operation, equipment status monitoring and fault diagnosis are difficult; once a fault occurs, it is often difficult to detect and handle it promptly, leading to prolonged downtime and affecting the continuity of wastewater treatment. With the development of information technology, the wastewater treatment industry has increasingly higher requirements for equipment intelligence. Traditional fine screen screw conveyors lack effective data acquisition and analysis methods, making it impossible to achieve real-time monitoring and remote management of their operating status.

[0004] To address these issues, we provide an operation control method for a fine bar screw conveyor for wastewater treatment. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to an operation control method for a fine bar screw conveyor used in wastewater treatment, comprising the following steps:

[0007] S100. Adjustment of the control system: Adjust the existing control system of the fine bar screw conveyor to enable it to achieve the control mode of interval operation, integrate or update the timer module to ensure that the running time and stop time can be set, so that the screw conveyor can run at the preset time interval;

[0008] S200, Timer Module Configuration: Configure the timer module to automatically reset and start a new cycle automatically after each running cycle ends. Test the function of the timer module to ensure that it can stably and reliably control the operation of the screw conveyor.

[0009] S300, Establishment of dynamic adjustment mechanism: An algorithm module is set in the control system to dynamically adjust the ratio of running time to stopping time according to the change in screenings discharge;

[0010] S400, Operation Status Monitoring: The monitoring system continuously monitors the operation status of the screw conveyor, records operation data, including running time, stop time, current consumption, and other information, and periodically analyzes the operation data to evaluate the effectiveness of the operation mode and energy-saving effect;

[0011] S500, Effect Evaluation: Compare the operating data of the screw conveyor before and after the modification, the equipment wear and tear and electricity costs, analyze whether the production efficiency is affected, ensure the normal operation of the sewage treatment process, and calculate the daily energy savings.

[0012] S600 Maintenance and Optimization: Regularly check the working status of the control system and sensors, and continuously optimize the operating parameters based on actual operating conditions.

[0013] The present invention is further configured such that the control system in step S100 includes at least one flow sensor for real-time monitoring of the screenings discharge amount, the flow sensor being installed at the outlet of the screw conveyor.

[0014] The present invention is further configured such that the flow sensor is connected to a PID controller in the algorithm module, and the parameters of the PID controller are determined experimentally.

[0015] The present invention is further configured such that the algorithm logic of the algorithm module in step S300 is as follows:

[0016] Input: Screenings discharge rate;

[0017] Output: Running time and stopping time;

[0018] Initialization runtime T run and stopping time T stop ;

[0019] Read the screenings discharge rate Q every minute;

[0020] If Q is greater than the threshold Q threshold This increases the running time T. run and reduce the stopping time T stop :

[0021] T run =Trun +ΔT

[0022] T stop =T stop -ΔT

[0023] If Q is less than the threshold Q threshold This reduces the running time T. run And increase the stopping time T stop :

[0024] T run =T run -ΔT

[0025] T stop =T stop +ΔT

[0026] Wherein, ΔT is the time increment, which can be set according to actual needs;

[0027] Ensure T run and T stop It is always greater than the minimum running time and the minimum stopping time.

[0028] The present invention is further configured such that the monitoring system includes a data recording unit and a data analysis unit, wherein the data recording unit is used to record the operating data of the screw conveyor, and the data analysis unit is used to analyze the operating data and generate a report.

[0029] The present invention is further configured such that the data analysis unit can transmit the operating data to a remote server via a wireless communication module, and the remote server can monitor the operating status of the screw conveyor in real time and provide an early warning function.

[0030] The present invention is further configured such that the control system includes a fault diagnosis module for detecting and diagnosing operational faults of the screw conveyor, the fault diagnosis module being connected to an audible and visual alarm.

[0031] The present invention is further configured such that the timer module is programmed and controlled by a PLC, and the timer module is automatically reset by a counter of the PLC.

[0032] The present invention has the following beneficial effects:

[0033] 1. This invention precisely controls the running and stopping times of the screw conveyor through a timer module, avoiding ineffective operation when there is little or no screenings, significantly reducing power consumption, achieving efficient energy utilization, reducing unnecessary equipment running time, reducing wear on mechanical parts, extending the service life of the equipment, and reducing maintenance and replacement costs.

[0034] 2. This invention monitors the screenings discharge in real time by setting a flow sensor and feeding the data back to the control system. The PID controller dynamically adjusts the ratio of running time to stopping time to ensure that the equipment is always in the optimal operating state. The operating mode is adjusted in a timely manner according to the changes in screenings discharge, which improves the efficiency of screenings treatment and ensures the continuity and stability of wastewater treatment. The dynamic adjustment mechanism enables the system to adapt to different working conditions, improving the system's adaptability and flexibility.

[0035] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the process of the present invention. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0039] Example

[0040] Please see Figure 1 This invention relates to an operation control method for a fine bar screw conveyor for wastewater treatment, comprising the following steps:

[0041] S100. Adjustment of the control system: Adjust the existing control system of the fine screen screw conveyor to enable it to achieve an interval operation control mode. Integrate or update the timer module to ensure that the running time and stop time can be set. Set the running time (e.g., 5 minutes) and stop time (e.g., 5 minutes) so that the screw conveyor runs at a preset time interval. The control system also includes at least one flow sensor for real-time monitoring of the screenings discharge. The flow sensor is installed at the outlet of the screw conveyor. The control system also includes a fault diagnosis module for detecting and diagnosing the operating faults of the screw conveyor. The fault diagnosis module is connected to an audible and visual alarm.

[0042] S200, Timer Module Configuration: Configure the timer module to automatically reset and start a new cycle automatically after each running cycle ends. Test the function of the timer module to ensure that it can stably and reliably control the operation of the screw conveyor. The timer module is programmed and controlled by the PLC, and the timer module achieves automatic reset through the PLC's counter.

[0043] S300, Establishment of dynamic adjustment mechanism: An algorithm module is set in the control system to dynamically adjust the ratio of running time to stopping time according to the change in screenings discharge. The flow sensor is connected to the PID controller in the algorithm module, and the parameters of the PID controller are determined through experiments.

[0044] S400, Operation Status Monitoring: The monitoring system continuously monitors the operation status of the screw conveyor, records operation data, including running time, stop time, current consumption, and other information, and periodically analyzes the operation data to evaluate the effectiveness and energy-saving effect of the operation mode. The monitoring system includes a data recording unit and a data analysis unit. The data recording unit is used to record the operation data of the screw conveyor, and the data analysis unit is used to analyze the operation data and generate reports. The data analysis unit can transmit the operation data to a remote server through a wireless communication module. The remote server can monitor the operation status of the screw conveyor in real time and provide early warning functions.

[0045] S500, Effect Evaluation: Compare the operating data of the screw conveyor before and after the modification, especially the equipment wear and tear and electricity costs, analyze whether the production efficiency is affected, ensure the normal operation of the sewage treatment process, and calculate the daily energy savings.

[0046] S600 Maintenance and Optimization: Regularly check the working status of the control system and sensors, collect user feedback, understand the problems in operation and solve them in a timely manner, and continuously optimize the operating parameters based on the actual operating conditions.

[0047] Specifically, the algorithm logic of the algorithm module in step S300 is as follows:

[0048] Input: Screenings discharge rate (unit: kg / min);

[0049] Output: Running time (in minutes) and stopping time (in minutes);

[0050] Initialization runtime T run and stopping time T stop All are 5 minutes;

[0051] Read the screenings discharge rate Q every minute;

[0052] If Q is greater than the threshold Q thresholdThis increases the running time T. run and reduce the stopping time T stop :

[0053] T run =T run +ΔT

[0054] T stop =T stop -ΔT

[0055] If Q is less than the threshold Q threshold This reduces the running time T. run And increase the stopping time T stop :

[0056] T run =T run -ΔT

[0057] T stop =T stop +ΔT

[0058] Where ΔT is the time increment, which can be set according to actual needs (e.g., 1 minute);

[0059] Ensure T run and T stop It is always greater than the minimum running time and the minimum stopping time.

[0060] The proposed operation control method for the fine screen screw conveyor uses a flow sensor to monitor changes in the screenings discharge rate in real time and feeds this information back to the PID controller. The PID controller calculates appropriate running and stopping times based on a pre-set algorithm, and then controls the actual operation of the screw conveyor through a timer module. This process achieves intelligent management of the fine screen screw conveyor's operating mode, improving work efficiency and promoting the development of a resource-saving society. By dynamically adjusting running and stopping times, screenings can be processed more effectively, reducing ineffective running time. Reasonable scheduling of running and stopping times avoids unnecessary energy waste, contributing to energy conservation and emission reduction, reducing wear caused by excessive equipment use, and protecting the equipment and extending its service life by optimizing operating parameters. Further explanation of the above operation control method is as follows:

[0061] First, the existing fine screen screw conveyor control system needs to be adjusted to support interval operation mode, and a timer module needs to be integrated to set and adjust the running time and stop time. In addition, a flow sensor needs to be installed to monitor the amount of screenings discharged, and a fault diagnosis module needs to be added to ensure the safe and stable operation of the equipment.

[0062] The timer module needs to be programmed and controlled by a programmable logic controller (PLC) to achieve an automatic reset function, ensuring that the next cycle can be started automatically after each running cycle ends, thus forming a continuous cyclic operation.

[0063] Based on data acquired by flow sensors, the running and stopping times of the screw conveyor are dynamically adjusted using a PID controller. The parameters of the PID controller need to be determined experimentally to find the optimal values ​​to accommodate variations in screenings discharge under different operating conditions.

[0064] The monitoring system continuously monitors and records the operating data of the screw conveyor, such as running time, stopping time, and current consumption. The data analysis unit periodically analyzes this data to evaluate the effectiveness of the operating mode. The data is then transmitted to a remote server via wireless communication technology to achieve remote monitoring and early warning.

[0065] By comparing operational data before and after the upgrade, paying particular attention to changes in equipment wear and tear and electricity costs, we can determine whether the new operating mode has improved production efficiency while ensuring that it does not affect the normal wastewater treatment process.

[0066] Regularly check the working status of each component and sensor of the control system, collect user feedback, identify and resolve problems that occur during operation, and continuously optimize operating parameters based on actual conditions to achieve optimal performance.

[0067] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, 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.

[0068] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A method for controlling the operation of a fine screen screw conveyor for wastewater treatment, characterized in that, Includes the following steps: S100. Adjustment of the control system: Adjust the control system of the fine bar screw conveyor to enable it to achieve the control mode of interval operation, integrate or update the timer module, set the running time and stop time, so that the screw conveyor runs according to the preset time interval; S200, Timer Module Configuration: Configure the timer module to automatically reset and start a new cycle automatically after each running cycle ends. Test the function of the timer module to ensure that it can stably and reliably control the operation of the screw conveyor. S300, Establishment of dynamic adjustment mechanism: An algorithm module is set in the control system to dynamically adjust the ratio of running time to stopping time according to the change in screenings discharge; S400, Operation Status Monitoring: The monitoring system continuously monitors the operation status of the screw conveyor, records operation data, including running time, stop time, and current consumption information, and periodically analyzes the operation data to evaluate the effectiveness of the operation mode and energy-saving effect; S500, Effect Evaluation: Compare the operating data of the screw conveyor before and after the modification, the equipment wear and tear and electricity costs, analyze whether the production efficiency is affected, ensure the normal operation of the sewage treatment process, and calculate the daily energy savings. S600 Maintenance and Optimization: Regularly check the working status of the control system and sensors, and continuously optimize the operating parameters based on actual operating conditions.

2. The operation control method for the fine grid screw conveyor according to claim 1, characterized in that, The control system in step S100 also includes at least one flow sensor for real-time monitoring of the screenings discharge rate, the flow sensor being installed at the outlet of the screw conveyor.

3. The operation control method for the fine grid screw conveyor according to claim 2, characterized in that, The flow sensor is connected to a PID controller in the algorithm module, and the parameters of the PID controller are determined experimentally.

4. The operation control method for the fine grid screw conveyor according to claim 1, characterized in that, The algorithm logic of the algorithm module in step S300 is as follows: Input: Screenings discharge rate; Output: Running time and stopping time; Initialization runtime T run and stopping time T stop ; Read the screenings discharge rate Q every minute; If Q is greater than the threshold Q threshold This increases the running time T. run and reduce the stopping time T stop : T run =T run +ΔT T stop =T stop -ΔT If Q is less than the threshold Q threshold This reduces the running time T. run And increase the stopping time T stop : T run =T run -ΔT T stop =T stop +ΔT Where ΔT is the time increment, which is set according to actual needs; Ensure T run and T stop It is always greater than the minimum running time and the minimum stopping time.

5. The operation control method for the fine grid screw conveyor according to claim 1, characterized in that, The monitoring system includes a data recording unit and a data analysis unit. The data recording unit is used to record the operating data of the screw conveyor, and the data analysis unit is used to analyze the operating data and generate reports.

6. The operation control method for the fine grid screw conveyor according to claim 5, characterized in that, The data analysis unit can transmit operational data to a remote server via a wireless communication module. The remote server can monitor the operating status of the screw conveyor in real time and provide early warning functions.

7. The operation control method for the fine grid screw conveyor according to claim 1, characterized in that, The control system also includes a fault diagnosis module for detecting and diagnosing operational faults of the screw conveyor, the fault diagnosis module being connected to an audible and visual alarm.

8. The operation control method for the fine grid screw conveyor according to claim 1, characterized in that, The timer module is programmed and controlled by a PLC, and the timer module is automatically reset through the PLC's counter.

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