Operation control method of fine grid screw conveyor for sewage treatment

Abstract

The invention discloses an operation control method of a fine grid screw conveyor for sewage treatment, and relates to the technical field of sewage treatment. The method comprises the following steps: adjusting a control system; configuring a timer module; establishing a dynamic adjustment mechanism; monitoring a running state; evaluating the effect; and maintaining and optimizing. The operation time and the stop time of the spiral conveyor are accurately controlled through the timer module, invalid operation when few or no grid slag exists is avoided, electric energy consumption is remarkably reduced, effective utilization of energy is achieved, unnecessary operation time of equipment is shortened, abrasion of mechanical parts is reduced, the service life of the equipment is prolonged, and the service life of the equipment is prolonged. The maintenance and replacement cost is reduced; the flow sensor monitors the gate slag discharge amount in real time, feeds data back to the control system, dynamically adjusts the proportion of the operation time and the stop time, ensures that the equipment is always in the optimal operation state, adjusts the operation mode in time according to the change of the gate slag discharge amount, and improves the gate slag treatment efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an operation control method of a fine grid screw conveyor for sewage treatment. Background Art

[0002] Fine grid screw conveyor is a kind of equipment widely used in urban sewage treatment plants and industrial wastewater treatment systems. It is mainly used to separate solid materials such as garbage, cellulose, etc. from sewage. These solid materials are usually called screen residue. Traditional fine grid screw conveyors mostly adopt continuous operation mode, that is, once started, they will continue to operate until they are manually shut down. Although this method is simple and easy to use, there are some obvious problems in practical application:

[0003] Since the amount of screens in sewage is not constant, but has peak and trough periods throughout the day, continuous operation will result in a large amount of electricity consumption when there is less or even no screens discharged, causing unnecessary energy waste; long-term continuous operation will accelerate the wear of equipment, especially for key components such as spiral blades. Excessive wear rate not only increases the cost of maintenance and replacement, but may also affect the efficiency and quality of sewage treatment; under the traditional continuous operation mode, equipment status monitoring and fault diagnosis are more difficult. Once a fault occurs, it is often difficult to detect and deal with it in time, which can easily lead to extended equipment downtime and affect the continuity of sewage treatment; with the development of information technology, the sewage treatment industry has higher and higher requirements for the intelligence of equipment. Traditional fine grid screw conveyors lack effective data collection and analysis methods, and cannot achieve real-time monitoring and remote management of operating status.

[0004] To this end, we provide an operation control method for a fine grid screw conveyor for sewage treatment to solve the above-mentioned problems. Summary of the invention

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

[0006] The present invention is an operation control method of a fine grid screw conveyor for sewage treatment, comprising the following steps:

[0007] S100, adjustment of the control system: adjusting the existing control system of the fine grid screw conveyor to enable it to realize the control mode of interval operation, integrating or updating the timer module to ensure that the running time and the stop time can be set, setting the running time (for example, 5 minutes) and the stop time (for example, 5 minutes), so that the screw conveyor can run at the preset time interval;

[0008] S200, configuration of the timer module: configure the timer module so that it can automatically reset and automatically start a new cycle after each operation cycle ends, and 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 the running time and the stopping time according to the change of the discharge amount of the screen residue;

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

[0011] S500, Effect evaluation: Compare the operating data of the screw conveyor before and after the transformation, especially the equipment wear and electricity costs, analyze whether the production efficiency is affected, ensure the normal progress of the sewage treatment process, and calculate the daily electricity saved;

[0012] S600, Maintenance and Optimization: Regularly check the working status of the control system and sensors, collect user feedback, understand problems in operation and solve them in a timely manner, and continuously optimize operating parameters based on actual operating conditions.

[0013] The present invention is further configured such that the control system in step S100 further includes at least one flow sensor for real-time monitoring of the discharge amount of screenings, and the flow sensor is 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 an algorithm module, and the parameters of the PID controller are determined through experiments.

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

[0016] Input: Screening discharge (unit: kg / min);

[0017] Output: running time (unit: minute) and stop time (unit: minute);

[0018] Initialization running time T run and stop time T stop 5 minutes;

[0019] Read the screen residue discharge volume Q every one minute;

[0020] If Q is greater than the threshold Q threshold , then increase the running time T run , and reduce the stop time T stop :

[0021] T run =T run +ΔT

[0022] T stop =T stop -ΔT

[0023] If Q is less than the threshold Q threshold , then reduce the running time T run , and increase the stop time

[0024] T stop :

[0025] T run =T run -ΔT

[0026] T stop =T stop +ΔT

[0027] Where ΔT is the time increment, which can be set according to actual needs (e.g. 1 minute);

[0028] Ensure T run and T stop Always greater than the minimum run time and minimum stop time.

[0029] The present invention is further configured such that the monitoring system comprises 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.

[0030] 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.

[0031] The present invention is further configured such that the control system further comprises a fault diagnosis module for detecting and diagnosing operational faults of the screw conveyor, and the fault diagnosis module is an external sound and light alarm.

[0032] 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.

[0033] The present invention has the following beneficial effects:

[0034] 1. The present invention accurately controls the running time and stopping time of the screw conveyor through the timer module, thereby avoiding ineffective operation when there is less or no screen residue, significantly reducing power consumption, achieving effective utilization of energy, reducing unnecessary running time of equipment, reducing wear of mechanical parts, extending the service life of equipment, and reducing maintenance and replacement costs.

[0035] 2. The present invention sets a flow sensor to monitor the discharge volume of screens in real time, and feeds back the data to the control system. The PID controller dynamically adjusts the ratio of the running time and the stopping time to ensure that the equipment is always in the optimal operating state. According to the changes in the discharge volume of screens, the operating mode is adjusted in time, the efficiency of screens treatment is improved, and the continuity and stability of sewage treatment are ensured. The dynamic adjustment mechanism enables the system to adapt to different working conditions, thereby improving the adaptability and flexibility of the system.

[0036] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Example

[0041] See also Figure 1 The present invention is an operation control method of a fine grid screw conveyor for sewage treatment, comprising the following steps:

[0042] S100, adjustment of the control system: adjusting the existing control system of the fine grid screw conveyor to enable it to realize the control mode of interval operation, integrating or updating the timer module to ensure that the running time and the stop time can be set, setting the running time (for example, 5 minutes) and the stop time (for example, 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 discharge amount of the grid residue, 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 operation fault of the screw conveyor, the fault diagnosis module has an external sound and light alarm;

[0043] S200, configuration of the timer module: configure the timer module so that it can automatically reset and automatically start a new cycle after each operation 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 is automatically reset by the counter of the PLC;

[0044] S300, establishment of dynamic adjustment mechanism: an algorithm module is set in the control system to dynamically adjust the ratio of the running time and the stopping time according to the change of the discharge amount of the screen residue, the flow sensor is connected to the PID controller in the algorithm module, and the parameters of the PID controller are determined by experiments;

[0045] S400, operation status monitoring: the monitoring system continuously monitors the operation status of the screw conveyor, records the operation data, including the operation time, stop time, current consumption and other information, regularly analyzes the operation data, and evaluates 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. The data analysis unit is used to analyze the operation data and generate a report. 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 an early warning function.

[0046] S500, Effect evaluation: Compare the operating data of the screw conveyor before and after the transformation, especially the equipment wear and electricity costs, analyze whether the production efficiency is affected, ensure the normal progress of the sewage treatment process, and calculate the daily electricity saved;

[0047] S600, Maintenance and Optimization: Regularly check the working status of the control system and sensors, collect user feedback, understand problems in operation and solve them in a timely manner, and continuously optimize operating parameters based on actual operating conditions.

[0048] Specifically, the algorithm logic of the algorithm module in step S300 is:

[0049] Input: Screening discharge (unit: kg / min);

[0050] Output: running time (unit: minute) and stop time (unit: minute);

[0051] Initialization running time T run and stop time T stop 5 minutes;

[0052] Read the screen residue discharge volume Q every one minute;

[0053] If Q is greater than the threshold Q threshold , then increase the running time T run , and reduce the stop time T stop :

[0054] T run =T run +ΔT

[0055] T stop =T stop -ΔT

[0056] If Q is less than the threshold Q threshold , then reduce the running time T run , and increase the stop time

[0057] T stop :

[0058] T run =T run -ΔT

[0059] T stop =T stop +ΔT

[0060] Where ΔT is the time increment, which can be set according to actual needs (e.g. 1 minute);

[0061] Ensure T run and T stop Always greater than the minimum run time and minimum stop time.

[0062] The operation control method of the fine grid screw conveyor proposed in the technical solution monitors the change of the discharge amount of the screen residue in real time through the flow sensor, and feeds this information back to the PID controller. The PID controller calculates the appropriate running time and stop time according to the preset algorithm logic, and then controls the actual operation of the screw conveyor through the timer module. This process realizes the intelligent management of the operation mode of the fine grid screw conveyor, which not only improves the work efficiency, but also promotes the development of a resource-saving society. By dynamically adjusting the running time and stop time, the screen residue can be handled more effectively, the invalid running time can be reduced, the running and stop time can be reasonably arranged, and unnecessary energy waste can be avoided, which is conducive to energy conservation and emission reduction, and the wear caused by excessive use of equipment can be reduced. The equipment is protected by optimizing the operating parameters and the service life is extended; further explanations on the above-mentioned operation control method are as follows:

[0063] First, the existing fine screen screw conveyor control system needs to be adjusted to support interval operation mode and integrate a timer module so that the running time and stop time can be set and adjusted. In addition, a flow sensor needs to be installed to monitor the discharge volume of screen residue, and a fault diagnosis module needs to be added to ensure the safe and stable operation of the equipment.

[0064] The timer module needs to be programmed and controlled by a programmable logic controller (PLC) to achieve an automatic reset function to ensure that the next cycle can be automatically started after each operation cycle, thus forming a continuous cycle operation.

[0065] Based on the data obtained by the flow sensor, the PID controller dynamically adjusts the running time and stop time ratio of the screw conveyor. The parameters of the PID controller need to be determined through experiments to determine the optimal value to adapt to the changes in the discharge volume of screen residue under different working conditions.

[0066] The monitoring system continuously monitors and records the operating data of the screw conveyor, such as operating time, stop time, current consumption, etc. The data analysis unit is used to regularly analyze these data to evaluate the effectiveness of the operating mode, and the data is sent to the remote server through wireless communication technology to achieve remote monitoring and early warning.

[0067] By comparing the operating data before and after the transformation, with particular attention paid to changes in equipment wear and electricity costs, it is possible to determine whether the new operating mode has improved production efficiency while ensuring that it will not affect the normal process of sewage treatment.

[0068] Regularly check the working conditions of various components and sensors of the control system, collect user feedback, identify and solve problems that arise during operation, and continuously optimize operating parameters according to actual conditions to achieve optimal performance.

[0069] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0070] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An operation control method for a fine grid screw conveyor for sewage treatment, characterized in that: The following steps are involved: S100, adjustment of the control system: adjusting the existing control system of the fine grid screw conveyor to enable it to realize the control mode of interval operation, integrating or updating the timer module to ensure that the running time and the stop time can be set, setting the running time (for example, 5 minutes) and the stop time (for example, 5 minutes), so that the screw conveyor can run at the preset time interval; S200, configuration of the timer module: configure the timer module so that it can automatically reset and automatically start a new cycle after each operation cycle ends, and 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 the running time and the stopping time according to the change of the discharge amount of the screen residue; S400, Operation status monitoring: The monitoring system continuously monitors the operation status of the screw conveyor, records the operation data, including operation time, stop time, current consumption and other information, regularly analyzes the operation data, and evaluates the effectiveness of the operation mode and the energy-saving effect; S500, Effect evaluation: Compare the operating data of the screw conveyor before and after the transformation, especially the equipment wear and electricity costs, analyze whether the production efficiency is affected, ensure the normal progress of the sewage treatment process, and calculate the daily electricity saved; S600, Maintenance and Optimization: Regularly check the working status of the control system and sensors, collect user feedback, understand problems in operation and solve them in a timely manner, and continuously optimize operating parameters based on actual operating conditions.

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

3. The operation control method of the fine grid screw conveyor according to claim 2 is 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 through experiments.

4. The operation control method of the fine grid screw conveyor according to claim 1, characterized in that: The algorithm logic of the algorithm module in step S300 is: Input: Screening discharge (unit: kg / min); Output: running time (unit: minute) and stop time (unit: minute); Initialization running time T run and stop time T stop 5 minutes; Read the screen residue discharge volume Q every one minute; If Q is greater than the threshold Q threshold , then increase the running time T run , and reduce the stop time T stop : T run =T run +ΔT T stop =T stop -ΔT If Q is less than the threshold Q threshold , then reduce the running time T run , and increase the stop time T stop ： T run =T run -ΔT T stop =T stop +ΔT Where ΔT is the time increment, which can be set according to actual needs (e.g. 1 minute); Ensure T run and T stop Always greater than the minimum run time and minimum stop time.

5. The operation control method of the fine grid screw conveyor according to claim 1, characterized in that: The monitoring system comprises 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 a report.

6. The operation control method of the fine grid screw conveyor according to claim 5, characterized in that: The data analysis unit can transmit the operating data to the remote server through the 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.

7. The operation control method of 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 operating faults of the screw conveyor, and the fault diagnosis module has an external sound and light alarm.

8. The operation control method of 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 by a counter of the PLC.

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