Sewage pump liquid level automatic control system
By installing multiple ion concentration sensors and a visual ion concentration sensing module in the wastewater raw material tank, and combining this with a liquid level control module to adjust the ratio of pure water and salt solution, the problem of inconsistent ion concentration during wastewater treatment was solved, thus achieving stability and accuracy in the ion exchange process.
Patent Information
- Application Number
- CN202511053086.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-30
- Publication Date
- 2025-10-28
AI Technical Summary
In existing technologies, when using a single ion concentration sensor to detect the wastewater to be treated in the wastewater raw material tank, the consistency of ion concentration cannot be guaranteed, which leads to interference with the ion exchange process and poor practicality.
Multiple ion concentration sensors are installed at different locations in the wastewater raw material tank, and combined with a visual ion concentration sensing module, the distribution of wastewater ion concentration is detected by spraying a colorimetric agent and visual sensors. Combined with a liquid level control module, the ratio of pure water and salt solution is adjusted to ensure the accuracy of the wastewater ion concentration value at the ion exchanger inlet.
It enables accurate detection and adjustment of ion concentration in wastewater, ensuring the stability and precision of the ion exchange process and improving the system's practicality.
Smart Images
Figure CN120848604A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of liquid level control technology, specifically relating to an automatic control system for the liquid level of a sewage pump. Background Technology
[0002] In the organic pollutant removal process of wastewater treatment, a wastewater pump is used to pass the wastewater to be treated from the wastewater raw material tank into an ion exchanger. At this time, salt solution and pure water are used to adjust the ion concentration so that the ion concentration of the wastewater pumped out reaches a suitable range. This is used to maintain a certain concentration of ions in the aerobic and anaerobic reaction tanks to maintain osmotic pressure and metabolic functions of microorganisms.
[0003] Current technologies for detecting ion concentration utilize a single ion concentration sensor to monitor the wastewater in the raw material tank. However, this wastewater originates from multiple sources, and although mixed, the ion concentration cannot be guaranteed to remain consistent, leading to inconsistencies. Directly detecting the ion concentration in the ion exchanger is impractical because the pumping delays of pure water and salt solutions can disrupt the ion exchange process. This issue has become a pressing problem for researchers in this field. Summary of the Invention
[0004] The purpose of this invention is to provide an automatic control system for the liquid level of a sewage pump in existing material collection devices, so as to solve the problems mentioned in the background art.
[0005] To address the aforementioned technical problems, the present invention provides the following technical solution: an automatic sewage pump level control system, comprising an ion concentration measurement module, a visual ion concentration sensing module, and a level control module. The ion concentration measurement module measures the ion concentration of sewage in the sewage raw material tank using a direct measurement method with an ion concentration sensor. The visual ion concentration sensing module detects the distribution of ion concentration in the sewage raw material tank using visual absorption of sewage. The level control module combines the two measurement methods to determine the specific ion concentration of sewage currently flowing into the ion exchanger, and adjusts the ratio of pure water to salt solution in the ion exchanger through level control.
[0006] The present invention further describes that the ion concentration measurement module includes a first ion concentration sensor, a sewage pump, a level-to-flow converter, and an ion concentration calculation module; the first ion concentration sensor is used to measure the ion concentration of sewage at different locations in the sewage raw material tank, the sewage pump is used to pump sewage to the ion exchanger, the level-to-flow converter is used to calculate the flow rate pumped by the sewage pump based on the level of the sewage pump, and the ion concentration calculation module is used to calculate the ion concentration of sewage based on the measurement results of the first ion concentration sensor.
[0007] The present invention further describes that the visual ion concentration sensing module includes a colorimetric agent spray head, a visual sensor, an ion concentration value area division module, a flow direction tracking module, and a wastewater ion concentration value calculation module. The colorimetric agent spray head is used to spray a colorimetric agent into the wastewater in the wastewater raw material tank to display the ion concentration of the wastewater. The visual sensor is used to detect the color depth of the colorimetric agent. The ion concentration value area division module is used to distinguish areas according to different wastewater ion concentration values. The flow direction tracking module is used to analyze the flow pattern of wastewater from the wastewater raw material tank to the wastewater pump based on the color depth change of the colorimetric agent. The wastewater ion concentration value calculation module is used to calculate the wastewater ion concentration value flowing into the ion exchanger based on the wastewater ion concentration value flowing to the connection point between the wastewater raw material tank and the wastewater pump.
[0008] The present invention further describes that the liquid level control module includes a time statistics unit, an ion concentration adjustment module, a replenishment pump, a second ion concentration sensor, and a liquid level adjustment module; the time statistics unit is used to count the time of sewage flow at different stages, the ion concentration adjustment module is used to adjust and control the ratio of pure water and salt solution, the replenishment pump is used to pump pure water and salt solution to the ion exchanger to adjust the ion concentration value, the second ion concentration sensor is used to verify the ion concentration, and the liquid level adjustment module is used to control the liquid level of the replenishment pump, thereby controlling the flow rate of pure water and salt solution.
[0009] The present invention further explains that the control method of the system is as follows: S0. Install first ion concentration sensors at multiple parallel positions at the bottom of the wastewater raw material tank so that the first ion concentration sensors can be wetted by wastewater during use, and install second ion concentration sensors at the inlet of the ion exchanger, and install colorimetric agent spray heads in the space above the wastewater in the wastewater raw material tank. S1. Measure the ion concentration of sewage at different locations in the sewage raw material tank using a first ion concentration value sensor, spray a color developer on the surface of the sewage, use a visual sensor to detect the color of the sewage passing through the plane, convert the color into an ion concentration value for display, and label the different detection screens with ion concentration values according to the sewage ion concentration values at different locations. S2. Real-time update of the detection screen, tracking and displaying changes in the direction of sewage flow. When the sewage in the area marked with a certain ion concentration value flows to the position of the sewage raw material tank and the sewage pump, it means that the sewage corresponding to the current ion concentration value is pumped into the ion exchanger. The sewage ion concentration value at the outlet of the current sewage raw material tank is detected. S3. Adjust the ratio of pure water and salt solution pumped by the liquid level pump, thereby adjusting the wastewater ion concentration at the inlet of the ion exchanger.
[0010] The present invention further explains that, in step S2, the specific method for detecting the ion concentration value of the sewage at the outlet of the current sewage raw material tank is as follows: when the sewage in the sewage raw material tank begins to be pumped, the time point at this moment is recorded. When sewage is pumped to the outlet of the sewage raw material tank, the time is... Based on historical surveillance footage, the sewage at the outlet of the wastewater raw material pool was traced... The flow trajectory of the wastewater within the wastewater raw material tank during this time period was used to locate the wastewater at this location. At the given time and location, locate the measurement data of the first ion concentration sensor at that location, which is the ion concentration value of the wastewater at the outlet of the wastewater raw material tank. Because the wastewater at the outlet of the wastewater raw material tank is directly pumped to the ion exchanger, It can be equivalent to the ion concentration of the wastewater pumped to the ion exchanger at a certain moment.
[0011] The present invention further illustrates that, in step S3, the ion concentration value measured by the second ion concentration sensor is an accurate wastewater ion concentration value at the inlet of the ion exchanger. However, this ion concentration value can only be used for verification because it was measured too late. The wastewater flow rate measured by the level-flow converter is... The volume, i.e., the flow rate, from the outlet of the wastewater raw material tank to the inlet of the ion exchanger. Given a quantity, the time it takes for the wastewater to flow between the two. Furthermore, based on the time statistics unit, the time point at which wastewater enters the wastewater raw material tank outlet was measured. The second ion concentration sensor measured the time point as follows: The reading of the second ion concentration sensor at this time point is the accurate wastewater ion concentration value at the ion exchanger inlet. ,Will and By comparison, the deviation coefficient of ion concentration values was obtained. The predicted values for other colored areas should be multiplied by the ion concentration deviation coefficient. .
[0012] The present invention further explains that, in step S3, the specific method for adjusting the ratio of pure water and salt solution pumped by the liquid level pump is as follows: when the sewage from the wastewater raw material tank to the ion exchanger has been pumped out, the time it takes for the ion exchanger to go from being unloaded to fully loaded with sewage is recorded and corrected. The average value, i.e. The volume of the fully loaded sewage is The set volume for replenishing wastewater is The ion concentration value of the ion exchanger needs to be adjusted to... The volume ratio of pure water to salt solution is: ,when When this happens, it is necessary to replenish with pure water. ,when When this happens, it is necessary to replenish the saline solution. ,in This is an empirical coefficient for converting ion concentration values to volume. Calculations will be made based on the actual situation.
[0013] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention uses multiple ion concentration sensors installed in the wastewater raw material tank to detect the ion concentration at different locations, and uniformly sprays a colorimetric reagent onto its surface to roughly detect the ion concentration distribution of the wastewater to be treated, and monitors the wastewater flow direction. This allows for a more accurate calculation of the wastewater ion concentration flowing into a certain ion exchanger. Combined with the wastewater pump level, the wastewater flow rate is calculated, which facilitates the advance adjustment of the flow rates of pure water and salt solution entering the ion exchanger. Attached Figure Description
[0014] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall modular structure of the present invention. Detailed Implementation
[0015] The following detailed, non-limiting description of the technical solution of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0016] Please see Figure 1 The present invention provides a technical solution: an automatic control system for sewage pump level, comprising an ion concentration measurement module, a visual ion concentration sensing module, and a level control module. The ion concentration measurement module is used to measure the ion concentration of sewage in the sewage raw material tank by directly measuring the ion concentration using an ion concentration sensor. The visual ion concentration sensing module is used to detect the distribution of ion concentration in the sewage raw material tank by visually absorbing the sewage. The level control module is used to combine the two measurement methods to specifically determine the ion concentration of sewage flowing into the ion exchanger, and to adjust the ratio of pure water and salt solution in the ion exchanger by level control. The ion concentration measurement module includes a first ion concentration sensor, a wastewater pump, a level-to-flow converter, and an ion concentration calculation module. The first ion concentration sensor is used to measure the ion concentration of wastewater at different locations in the wastewater raw material tank. The wastewater pump is used to pump wastewater into the ion exchanger. The level-to-flow converter is used to calculate the flow rate pumped by the wastewater pump based on the level of the wastewater pump. The ion concentration calculation module is used to calculate the ion concentration of wastewater based on the measurement results of the first ion concentration sensor. The visual ion concentration sensing module includes a colorimetric agent spray head, a visual sensor, an ion concentration value area division module, a flow direction tracking module, and a wastewater ion concentration value calculation module. The colorimetric agent spray head is used to spray colorimetric agents into the wastewater in the wastewater raw material tank to display the ion concentration of the wastewater. The visual sensor is used to detect the color depth of the colorimetric agent. The ion concentration value area division module is used to distinguish areas according to different wastewater ion concentration values. The flow direction tracking module is used to analyze the flow pattern of wastewater from the wastewater raw material tank to the wastewater pump based on the color depth changes of the colorimetric agent. The wastewater ion concentration value calculation module is used to calculate the wastewater ion concentration value flowing into the ion exchanger based on the wastewater ion concentration value flowing to the connection point between the wastewater raw material tank and the wastewater pump. The liquid level control module includes a time statistics unit, an ion concentration adjustment module, a make-up pump, a second ion concentration sensor, and a liquid level adjustment module. The time statistics unit is used to count the time of wastewater flow at different stages. The ion concentration adjustment module is used to adjust and control the ratio of pure water and salt solution. The make-up pump is used to pump pure water and salt solution to the ion exchanger to adjust the ion concentration value. The second ion concentration sensor is used to verify the ion concentration. The liquid level adjustment module is used to control the liquid level of the make-up pump, thereby controlling the flow rate of pure water and salt solution. The control method of this system is as follows: S0. Install first ion concentration sensors at multiple parallel positions at the bottom of the wastewater raw material tank so that the first ion concentration sensors can be wetted by wastewater during use, and install second ion concentration sensors at the inlet of the ion exchanger, and install colorimetric agent spray heads in the space above the wastewater in the wastewater raw material tank. S1. Measure the ion concentration of sewage at different locations in the sewage raw material tank using a first ion concentration value sensor, spray a color developer on the surface of the sewage, use a visual sensor to detect the color of the sewage passing through the plane, convert the color into an ion concentration value for display, and label the different detection screens with ion concentration values according to the sewage ion concentration values at different locations. S2. Real-time update of the detection screen, tracking and displaying changes in the direction of sewage flow. When the sewage in the area marked with a certain ion concentration value flows to the position of the sewage raw material tank and the sewage pump, it means that the sewage corresponding to the current ion concentration value is pumped into the ion exchanger. The sewage ion concentration value at the outlet of the current sewage raw material tank is detected. S3. Adjust the ratio of pure water and salt solution pumped by the liquid level pump, thereby adjusting the wastewater ion concentration at the inlet of the ion exchanger; In S2, the specific method for detecting the ion concentration value of the sewage at the outlet of the sewage raw material tank is as follows: when the sewage in the sewage raw material tank begins to be pumped, record the time point at that moment. When sewage is pumped to the outlet of the sewage raw material tank, the time is... Based on historical surveillance footage, the sewage at the outlet of the wastewater raw material pool was traced... The flow trajectory of the wastewater within the wastewater raw material tank during this time period was used to locate the wastewater at this location. At the given time and location, locate the measurement data of the first ion concentration sensor at that location, which is the ion concentration value of the wastewater at the outlet of the wastewater raw material tank. Because the wastewater at the outlet of the wastewater raw material tank is directly pumped to the ion exchanger, It can be equivalent to the ion concentration value of the wastewater pumped to the ion exchanger at a certain moment; In S3, the ion concentration value measured by the second ion concentration sensor is the accurate wastewater ion concentration value at the ion exchanger inlet. However, this ion concentration value can only be used for verification because it was measured too late. The wastewater flow rate measured by the level-flow converter is... The volume, i.e., the flow rate, from the outlet of the wastewater raw material tank to the inlet of the ion exchanger. Given a quantity, the time it takes for the wastewater to flow between the two. Furthermore, based on the time statistics unit, the time point at which wastewater enters the wastewater raw material tank outlet was measured. The second ion concentration sensor measured the time point as follows: The reading of the second ion concentration sensor at this time point is the accurate wastewater ion concentration value at the ion exchanger inlet. ,Will and By comparison, the deviation coefficient of ion concentration values was obtained. The predicted values for other colored areas should be multiplied by the ion concentration deviation coefficient. ; In S3, the specific method for adjusting the ratio of pure water and salt solution pumped by the liquid level pump is as follows: When the sewage from the wastewater raw material tank to the ion exchanger has been pumped out, record the time it takes for the ion exchanger to go from being unloaded to fully loaded with sewage. The average value, i.e. The volume of the fully loaded sewage is The set volume for replenishing wastewater is The ion concentration value of the ion exchanger needs to be adjusted to... The volume ratio of pure water to salt solution is: ,when When this happens, it is necessary to replenish with pure water. ,when When this happens, it is necessary to replenish the saline solution. ,in This is an empirical coefficient for converting ion concentration values to volume. Calculations will be made based on the actual situation.
[0017] This invention employs multiple ion concentration sensors installed in the wastewater raw material tank to detect ion concentrations at different locations, and uniformly sprays a colorimetric reagent onto the surface to roughly detect the ion concentration distribution of the wastewater to be treated, and monitors the wastewater flow direction. This allows for a more accurate calculation of the ion concentration of wastewater flowing into a particular ion exchanger. Combined with the wastewater pump level, the wastewater flow rate is calculated, facilitating the advance adjustment of the flow rates of pure water and salt solution entering the ion exchanger.
[0018] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.
[0019] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features, and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. An automatic control system for sewage pump level, characterized in that: The system includes an ion concentration measurement module, a visual ion concentration sensing module, and a liquid level control module. The ion concentration measurement module measures the ion concentration of wastewater in the wastewater raw material tank using a direct measurement method with an ion concentration sensor. The visual ion concentration sensing module detects the distribution of ion concentration in the wastewater raw material tank by visually absorbing wastewater. The liquid level control module combines the two measurement methods to determine the specific ion concentration of wastewater flowing into the ion exchanger and adjusts the ratio of pure water to salt solution in the ion exchanger through liquid level control.
2. The automatic control system for sewage pump level according to claim 1, characterized in that: The ion concentration measurement module includes a first ion concentration sensor, a wastewater pump, a level-to-flow converter, and an ion concentration calculation module. The first ion concentration sensor is used to measure the ion concentration of wastewater at different locations in the wastewater raw material tank. The wastewater pump is used to pump wastewater into the ion exchanger. The level-to-flow converter is used to calculate the flow rate pumped by the wastewater pump based on the level of the wastewater pump. The ion concentration calculation module is used to calculate the ion concentration of wastewater based on the measurement results of the first ion concentration sensor.
3. The automatic control system for sewage pump level according to claim 2, characterized in that: The visual ion concentration sensing module includes a colorimetric agent spray head, a visual sensor, an ion concentration value area division module, a flow direction tracking module, and a wastewater ion concentration value calculation module. The colorimetric agent spray head is used to spray a colorimetric agent into the wastewater in the wastewater raw material tank to display the ion concentration of the wastewater. The visual sensor is used to detect the color depth of the colorimetric agent. The ion concentration value area division module is used to distinguish areas according to different wastewater ion concentration values. The flow direction tracking module is used to analyze the flow pattern of wastewater from the wastewater raw material tank to the wastewater pump based on the color depth changes of the colorimetric agent. The wastewater ion concentration value calculation module is used to calculate the wastewater ion concentration value flowing into the ion exchanger based on the wastewater ion concentration value flowing to the connection point between the wastewater raw material tank and the wastewater pump.
4. The automatic control system for sewage pump level according to claim 3, characterized in that: The liquid level control module includes a time statistics unit, an ion concentration adjustment module, a replenishment pump, a second ion concentration sensor, and a liquid level adjustment module. The time statistics unit is used to count the time of wastewater flow at different stages. The ion concentration adjustment module is used to adjust and control the ratio of pure water and salt solution. The replenishment pump is used to pump pure water and salt solution to the ion exchanger to adjust the ion concentration value. The second ion concentration sensor is used to verify the ion concentration. The liquid level adjustment module is used to control the liquid level of the replenishment pump, thereby controlling the flow rate of pure water and salt solution.
5. The automatic control system for sewage pump level according to claim 4, characterized in that: The control method of this system is as follows: S0. Install first ion concentration sensors at multiple parallel positions at the bottom of the wastewater raw material tank so that the first ion concentration sensors can be wetted by wastewater during use, and install second ion concentration sensors at the inlet of the ion exchanger, and install colorimetric agent spray heads in the space above the wastewater in the wastewater raw material tank. S1. Measure the ion concentration of sewage at different locations in the sewage raw material tank using a first ion concentration value sensor, spray a color developer on the surface of the sewage, use a visual sensor to detect the color of the sewage passing through the plane, convert the color into an ion concentration value for display, and label the different detection screens with ion concentration values according to the sewage ion concentration values at different locations. S2. Real-time update of the detection screen, tracking and displaying changes in the direction of sewage flow. When the sewage in the area marked with a certain ion concentration value flows to the position of the sewage raw material tank and the sewage pump, it means that the sewage corresponding to the current ion concentration value is pumped into the ion exchanger. The sewage ion concentration value at the outlet of the current sewage raw material tank is detected. S3. Adjust the ratio of pure water and salt solution pumped by the liquid level pump, thereby adjusting the wastewater ion concentration at the inlet of the ion exchanger.
6. The automatic control system for sewage pump level according to claim 5, characterized in that: In step S2, the specific method for detecting the ion concentration value of the sewage at the outlet of the current sewage raw material tank is as follows: when the sewage in the sewage raw material tank begins to be pumped, record the time point at that moment. When sewage is pumped to the outlet of the sewage raw material tank, the time is... Based on historical surveillance footage, the sewage at the outlet of the wastewater raw material pool was traced... The flow trajectory of the wastewater within the wastewater raw material tank during this time period was used to locate the wastewater at this location. At the given time and location, locate the measurement data of the first ion concentration sensor at that location, which is the ion concentration value of the wastewater at the outlet of the wastewater raw material tank. Because the wastewater at the outlet of the wastewater raw material tank is directly pumped to the ion exchanger, It can be equivalent to the ion concentration of the wastewater pumped to the ion exchanger at a certain moment.
7. The automatic control system for sewage pump level according to claim 6, characterized in that: In step S3, the ion concentration value measured by the second ion concentration sensor is the accurate ion concentration value of the wastewater at the inlet of the ion exchanger. However, this ion concentration value can only be used for verification because it was measured too late. The wastewater flow rate measured by the level-flow converter is... The volume, i.e., the flow rate, from the outlet of the wastewater raw material tank to the inlet of the ion exchanger. Given a quantity, the time it takes for the wastewater to flow between the two. Furthermore, based on the time statistics unit, the time point at which wastewater enters the wastewater raw material tank outlet was measured. The second ion concentration sensor measured the time point as follows: The reading of the second ion concentration sensor at this time point is the accurate wastewater ion concentration value at the ion exchanger inlet. ,Will and By comparison, the deviation coefficient of ion concentration values was obtained. The predicted values for other colored areas should be multiplied by the ion concentration deviation coefficient. .
8. The automatic control system for sewage pump level according to claim 7, characterized in that: In step S3, the specific method for adjusting the ratio of pure water and salt solution pumped by the liquid level pump is as follows: when the sewage from the wastewater raw material tank to the ion exchanger has been pumped out, record the time it takes for the ion exchanger to go from being unloaded to fully loaded with sewage. The average value, i.e. The volume of the full load of sewage is The set volume for replenishing wastewater is The ion concentration value of the ion exchanger needs to be adjusted to... The volume ratio of pure water to salt solution is: ,when When this happens, it is necessary to replenish with pure water. ,when When this happens, it is necessary to replenish the saline solution. ,in This is an empirical coefficient for converting ion concentration values to volume. Calculations will be made based on the actual situation.