Control system for realizing drainage by utilizing tidal liquid level difference

Abstract

The invention discloses a control system for realizing drainage by utilizing tidal liquid level difference, which belongs to the technical field of drainage control and comprises a storage and drainage control room, a filter component is arranged on one side in the storage and drainage control room, one end of the filter component is connected with a first control component, and one end of the first control component is connected with a second control component. Through the filtering assembly arranged in the storage and drainage control room, passive automatic decontamination can be achieved through the kinetic energy of water flow, impurity accumulation can be continuously prevented without additional energy consumption, the first control assembly and the second control assembly arranged in the filtering assembly can fully utilize a liquid level control well and a liquid level meter to monitor tidal changes, and the control efficiency is improved. Dependence on a fixed pump station is reduced, operation energy consumption is reduced, efficient drainage is guaranteed, energy waste is avoided, monitoring assemblies arranged in the second control assembly and the storage and drainage control room can accurately capture the effective drainage window period in the tide fluctuation period, and water pump operation time and power consumption are reduced.

Description

Technical Field

[0001] This invention relates to the field of drainage control technology, and more specifically, to a control system that utilizes tidal level differences to achieve drainage. Background Technology

[0002] The tidal level difference drainage control system is an engineering system specifically designed to utilize the level difference generated by the natural rise and fall of ocean tides (i.e., the sea level is higher than the land water body during high tide and lower than the land water body during low tide) to achieve automatic or semi-automatic drainage. It is not only suitable for newly built coastal sewage treatment plants, but can also be widely used in the energy-saving renovation of existing systems, and has good economic and social benefits.

[0003] However, during the drainage process, suspended solids, floating garbage, and sediment carried in the water can easily clog the filter screen, affecting the smooth flow of water. Frequent shutdowns for maintenance are required, which increases operation and maintenance costs and reduces system reliability. At the same time, drainage systems usually rely on fixed pump stations or power equipment, resulting in high operating costs and energy consumption. They also cannot effectively utilize the liquid level difference of natural tides, leading to low drainage efficiency.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a control system that utilizes tidal level differences to achieve drainage, which has the advantages of addressing the aforementioned technical problems and thus solves the issues in existing technologies.

[0007] (II) Technical Solution

[0008] To achieve the advantages of solving the aforementioned technical problems, the specific technical solution adopted by the present invention is as follows:

[0009] A control system for drainage using tidal level difference includes a storage and drainage control room. A filter assembly is installed on one side of the interior of the storage and drainage control room. One end of the filter assembly is connected to a control assembly one, and one end of the control assembly one is connected to a control assembly two. A monitoring assembly is installed on one side of the control assembly two and inside the storage and drainage control room.

[0010] The filtration assembly includes a partition plate inside the storage and discharge control room, which divides the storage and discharge control room into a water storage chamber and a discharge control chamber. Multiple filter cylinders are installed on one side of the partition plate. Multiple sliding grooves are opened inside the filter cylinders. Filter frames are installed inside the sliding grooves. Filter frames are equipped with filter screens and activated carbon screens. An auxiliary water wheel is connected to one side of the filter frame through a bearing. One end of the auxiliary water wheel is connected through the activated carbon screen and the filter screen.

[0011] Furthermore, in order to better utilize the tidal level difference for drainage control, control component one includes a filter cylinder connected to a conveying pipe one at one end, and the conveying pipe one at one end is connected to the storage and discharge control room. Multiple water pumps, multiple check valves and an electromagnetic flow meter one are sequentially installed on the conveying pipe one. The water pumps and check valves are located inside the discharge control room. A conveying pipe two is connected to one side of the storage and discharge control room, and multiple electric butterfly valves one are installed on the conveying pipe two.

[0012] Furthermore, in order to better utilize the tidal level difference for drainage control, the control component two includes a conveying pipe two connected to a disinfection oxidation tank at one end, a conveying pipe three connected to one side of the disinfection oxidation tank, a plurality of electric butterfly valves two and electromagnetic flow meters two respectively installed on the conveying pipe three, a level control well connected to one end of the conveying pipe three and the conveying pipe one, and a level pipe connected to the level control well.

[0013] Furthermore, in order to better monitor the tidal level and the treated water level, and to facilitate better control, the monitoring components include a sea level gauge installed on the level pipe, a high level gauge and a low level gauge installed inside the level control well, and two level gauges installed on each side of the inside of the water storage chamber.

[0014] Furthermore, in order to better provide auxiliary heat dissipation for the electrical equipment in the PLC control cabinet and the emission control room, a PLC control cabinet is installed inside the emission control room. Auxiliary cylinders are installed on both sides of the PLC control cabinet and both sides of the storage and emission control room. Auxiliary fans and filter covers are installed inside the auxiliary cylinders, and air inlets are evenly distributed on the auxiliary cylinders.

[0015] Furthermore, in order to better measure the amount of treatment agent added, a metering pump is installed on the delivery pipe, and a dosing cylinder is installed above the metering pump.

[0016] Furthermore, to better assist in cleaning the filter screen and filter cylinder, the auxiliary water wheel is equipped with multiple scraper blades, two of which have one side in contact with the filter screen, and the other four scraper blades have contact with the inside of the filter cylinder.

[0017] Furthermore, in order to better discharge the cleaned and intercepted impurities, a chip discharge valve is installed on the filter cartridge. One end of the chip discharge valve is connected to a chip discharge pipe, and the other end of the chip discharge pipe is connected to the storage and discharge control room.

[0018] Furthermore, for better maintenance, a maintenance port is provided on the filter cartridge, and a sealing cover is hinged inside the maintenance port. The sealing cover is equipped with multiple latches on the filter cartridge.

[0019] This application also provides a control method for the above-mentioned control system that utilizes tidal level differences to achieve drainage, comprising the following steps:

[0020] S1. After the system starts, the level gauge in the water storage chamber monitors the internal water level in real time. When the water level reaches the set threshold, the signal is transmitted to the PLC control cabinet to trigger the drainage preparation program.

[0021] S2. The sea level gauge continuously monitors the external tidal level. The PLC control cabinet determines whether the natural drainage conditions are met based on the real-time tidal data, that is, an effective level difference is formed between the level control well and the open sea.

[0022] S3. When the arrival of low tide is detected and the sea level is lower than the water level in the control well, the PLC control cabinet automatically opens electric butterfly valve one and electric butterfly valve two to achieve gravity-driven discharge without power, reducing the energy consumption of the water pump.

[0023] S4. If the tidal level difference is insufficient or the drainage speed needs to be accelerated, the PLC control cabinet starts the water pump and, in conjunction with the flow data fed back by electromagnetic flowmeter 1 and electromagnetic flowmeter 2, dynamically adjusts the water pump operating frequency and the opening degree of electric butterfly valve 1 and electric butterfly valve 2 to achieve precise flow control.

[0024] S5. During the drainage process, the water flows through the filter cylinder and drives the auxiliary water wheel to rotate, which drives the scraper to continuously scrape off the impurities attached to the surface of the filter screen and activated carbon screen, as well as the inner wall of the filter cylinder, to prevent clogging and maintain the flow capacity.

[0025] S6. When the system executes the slag discharge procedure and maintenance, the PLC control cabinet controls the chip discharge valve to open, and discharges the impurities accumulated at the bottom of the filter cartridge through the chip discharge pipe. The maintenance port on the filter cartridge is equipped with a sealing cover and two latches, which can be easily opened when maintenance is required and tightly closed after maintenance to ensure stable operation in the future.

[0026] S7. When the water is delivered to the disinfection and oxidation tank, the metering pump extracts the treatment agent from the dosing cylinder according to the preset program or water quality parameters and accurately adds it to the delivery pipe three to ensure that the discharged water meets the environmental protection standards. The entire process is controlled by the PLC control cabinet in coordination with the electric butterfly valve two, the electromagnetic flow meter two and the metering pump to complete the dosing control.

[0027] The S8 and PLC control cabinet receive signals from the high-level and low-level liquid level gauges in real time to monitor the operation status of the liquid level control well and avoid the risk of overflow or dry pumping. When the temperature of the equipment compartment rises, the temperature sensor triggers the auxiliary fan to start, introducing external airflow through the air inlet of the auxiliary cylinder. After being filtered by the filter cover, the airflow is used to force heat dissipation of the PLC control cabinet and electrical components.

[0028] S9. The entire system's operating status is centrally managed by the PLC control cabinet, and intelligent and energy-saving drainage control is achieved through data interaction between various sensors and actuators.

[0029] (III) Beneficial Effects

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] (1) By using the filter components installed in the storage and drainage control room, passive automatic cleaning can be achieved by utilizing the kinetic energy of the water flow itself. This can continuously prevent the accumulation of impurities without additional energy consumption, greatly improving the filtration efficiency and flow capacity, realizing automatic discharge of impurities, reducing operation and maintenance costs and the frequency of manual intervention. The control components one and two installed in the filter components can make full use of the level control well and level gauge to monitor tidal changes, reduce dependence on fixed pump stations, reduce operating energy consumption, optimize the flow rate and flow rate in the drainage process, ensure efficient drainage and avoid energy waste, and make the system highly adaptable and able to dynamically adjust the drainage strategy according to tidal changes.

[0032] (2) By setting up monitoring components in the control component 2 and the storage and discharge control room, the system can accurately capture the effective drainage window period in the tidal cycle, reduce the pump running time and power consumption, effectively avoid waterlogging or seawater intrusion accidents caused by delayed human response, and greatly improve the safety and reliability of the system. The scraper plate set in the auxiliary water turbine can continuously scrape and clean the attached suspended solids, biofilm, silt and other impurities.

[0033] (3) By setting auxiliary cylinders, auxiliary fans, filter covers and air inlets in the PLC control cabinet and storage and drainage control room, corrosive particles such as salt spray and dust can be intercepted. The clean airflow is then forced into the control cabinet by the auxiliary fan to form a wind duct circulation, which improves heat dissipation efficiency, avoids the corrosion of electronic components by the high humidity and high salt marine environment, extends the life of the PLC control system, and ensures the stable operation of the entire drainage system under complex working conditions. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in 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.

[0035] Figure 1 This is a schematic diagram of a control component according to an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the structure of the filter component, the control component, the control component, and the monitoring component according to an embodiment of the present invention;

[0037] Figure 3 This is a partial structural diagram of the filter component according to an embodiment of the present invention;

[0038] Figure 4 This is a schematic cross-sectional view of the filter frame according to an embodiment of the present invention;

[0039] Figure 5 This is a schematic diagram of the auxiliary water turbine structure according to an embodiment of the present invention;

[0040] Figure 6 This is a schematic cross-sectional view of the auxiliary cylinder structure according to an embodiment of the present invention;

[0041] Figure 7 This is a schematic diagram of the metering pump and dosing cylinder according to an embodiment of the present invention.

[0042] In the picture:

[0043] 1. Storage and Discharge Control Room; 2. Filtration Components; 201. Partition Plate; 202. Filter Cartridge; 203. Filter Frame; 204. Filter Screen; 205. Activated Carbon Screen; 206. Auxiliary Water Wheel; 3. Control Component One; 301. Delivery Pipe One; 302. Water Pump; 303. Check Valve; 304. Electromagnetic Flowmeter One; 305. Delivery Pipe Two; 306. Electric Butterfly Valve One; 4. Control Component Two; 401. Disinfection and Oxidation Tank; 402. Delivery Pipe Three; 403. Electric... 404. Electromagnetic flowmeter II; 405. Liquid level control well; 406. Liquid level pipe; 5. Monitoring components; 501. Sea level gauge; 502. High level gauge; 503. Low level gauge; 504. Liquid level gauge; 6. PLC control cabinet; 7. Auxiliary cylinder; 8. Auxiliary fan; 9. Filter cover; 10. Air inlet; 11. Metering pump; 12. Dosing cylinder; 13. Scraper; 14. Chip discharge valve; 15. Chip discharge pipe; 16. Sealing cover; 17. Locking buckle. Detailed Implementation

[0044] To further illustrate the technical solutions of this application, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible embodiments and the advantages of the invention. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0045] like Figure 1 - Figure 5 As shown, the present invention provides the following technical solution: a control system for drainage using tidal level difference, including a storage and drainage control room 1, a filter component 2 is provided on one side of the interior of the storage and drainage control room 1, one end of the filter component 2 is connected to a control component 3, one end of the control component 3 is connected to a control component 4, and a monitoring component 5 is provided on one side of the control component 4 and inside the storage and drainage control room 1.

[0046] The filter assembly 2 includes a storage and discharge control room 1 with a partition plate 201 inside, which divides the storage and discharge control room 1 into a water storage chamber and a discharge control chamber. Four filter cylinders 202 are provided on one side of the partition plate 201. The filter cylinders 202 are equipped with high-pressure backwash nozzles (not shown in the figure) inside during actual use to prevent the impurities being cleaned from accumulating together. The filter cylinders 202 have two sliding grooves inside, which are symmetrically arranged. The sliding grooves are equipped with filter frames 203 inside, which are used to install filter screens 204 and activated carbon screens 205. The filter frames 203 are equipped with filter screens 204 and activated carbon screens 205 inside, which are used to treat impurities in the liquid. The filter screens 204 and activated carbon screens 205 are detachable in actual use.

[0047] An auxiliary water wheel 206 is connected to one side of the filter frame 203 via a bearing. It is used to assist in cleaning by rotating the scraper 13 by conveying liquid. The auxiliary water wheel 206 is equipped with six scraper 13s, which are used to scrape out the impurities attached to the filter screen 204 and the inside of the filter cylinder 202. The scraper 13s are polyurethane elastic scrapers. Two of the scraper 13s are in contact with the filter screen 204 on one side, and the other four scraper 13s are in contact with the inside of the filter cylinder 202. One end of the auxiliary water wheel 206 is connected through the activated carbon mesh 205 and the filter screen 204.

[0048] Each of the four filter cartridges 202 is equipped with a chip discharge valve 14 for discharging cleaned impurities. One end of the chip discharge valve 14 is connected to a chip discharge pipe 15 for conveying cleaned impurities. The chip discharge pipe 15 is used in a collection container (not shown in the figure) for centralized processing of impurities. One end of the chip discharge pipe 15 is connected to the storage and discharge control room 1. The filter cartridges 202 are provided with maintenance ports for maintaining or replacing the activated carbon mesh plate 205 and the filter mesh plate 204. A sealing cover 16 is hinged inside the maintenance port to cover the maintenance port. Two latches 17 are provided on the sealing cover 16 and the filter cartridge 202 to improve the tightness between the maintenance port and the sealing cover 16.

[0049] like Figure 1 - Figure 2 , Figure 7 As shown, control component 3 includes a filter cartridge 202 with one end connected to a conveying pipe 301 for conveying treated water in the storage chamber. One end of the conveying pipe 301 is connected to the storage and discharge control room 1. Four water pumps 302, four check valves 303 and an electromagnetic flow meter 304 are sequentially installed on the conveying pipe 301. The water pumps 302 and check valves 303 are located inside the discharge control room. One side of the storage and discharge control room 1 is connected to a conveying pipe 305 for inputting treated water from the disinfection oxidation tank 401. Two electric butterfly valves 306 are installed on the conveying pipe 305 for controlling the input flow rate and flow rate.

[0050] Control component 2 4 includes a second conveying pipe 305 connected at one end to a disinfection oxidation tank 401, a third conveying pipe 402 connected to one side of the disinfection oxidation tank 401 for auxiliary conveying, a metering pump 11 installed on the third conveying pipe 402 for metering control of the treatment agent, the metering pump 11 can be replaced with other structures according to actual use, a dosing cylinder 12 is installed above the metering pump 11 for storing the treatment agent used for sewage, two electric butterfly valves 403 and an electromagnetic flow meter 404 are respectively installed on the third conveying pipe 402 for auxiliary control of flow rate, flow rate and auxiliary metering, a level control well 405 connected to one end of the third conveying pipe 402 and the first conveying pipe 301 for better level pressure drainage treatment according to tides, a level pipe 406 connected to the level control well 405 for auxiliary level monitoring.

[0051] like Figure 2 As shown, the monitoring component 5 includes a sea level gauge 501 installed on the level pipe 406 for monitoring the level of the liquid. A high level gauge 502 and a low level gauge 503 are installed inside the level control well 405 for monitoring the level of the liquid. Two level gauges 504 are installed on both sides of the inside of the water storage chamber for monitoring the level of the water storage chamber.

[0052] like Figure 6 As shown, the emission control room is equipped with a PLC control cabinet 6 for better emission control. The PLC control cabinet 6 is equipped with a liquid level deviation alarm module, a backflow risk monitoring module, an overflow risk monitoring module, and a circulation fault monitoring module (not shown in the figure) during actual use. Auxiliary cylinders 7 are installed on both sides of the PLC control cabinet 6 and both sides of the storage and emission control room 1 for conveying gas. The auxiliary cylinder 7 is equipped with an auxiliary fan 8 and a filter cover 9 for assisting in conveying heat dissipation gas and filtering impurities. The auxiliary fan 8 is electrically connected to a temperature sensor (not shown in the figure) during actual use. The auxiliary cylinder 7 has equidistantly distributed air inlets 10 for the intake of heat dissipation gas.

[0053] Auxiliary fan 8, temperature sensor, level gauge 504, low level gauge 503, high level gauge 502, sea level gauge 501, electromagnetic flow meter II 404, electric butterfly valve II 403, metering pump 11, electric butterfly valve I 306, electromagnetic flow meter I 304, check valve 303, water pump 302, and chip discharge valve 14 are electrically connected to PLC control cabinet 6. PLC control cabinet 6 is a programmable logic controller, and the specific working control program of PLC control cabinet 6 is written and set according to the actual situation, which is conducive to the precise control of electrically connected electrical components.

[0054] Auxiliary fan 8, temperature sensor, level gauge 504, low level gauge 503, high level gauge 502, sea level gauge 501, electromagnetic flow meter II 404, electric butterfly valve II 403, metering pump 11, electric butterfly valve I 306, electromagnetic flow meter I 304, check valve 303, water pump 302, and chip discharge valve 14 are electrically connected to an external power supply during actual use.

[0055] Auxiliary fan 8, temperature sensor, PLC control cabinet 6, level gauge 504, low level gauge 503, high level gauge 502, sea level gauge 501, electromagnetic flow meter II 404, electric butterfly valve II 403, quantitative pump 11, electric butterfly valve I 306, electromagnetic flow meter I 304, check valve 303, water pump 302, and chip discharge valve 14 are existing technologies and will not be described in detail. The specific model and specifications need to be selected and determined according to the actual specifications of the device.

[0056] like Figure 1 - Figure 7 As shown in the embodiments of this application, a control method for a control system that utilizes tidal level differences to achieve drainage is disclosed, comprising the following steps:

[0057] S1. After the system starts, the level gauge 504 in the water storage chamber monitors the internal water level in real time. When the water level reaches the set threshold, the signal is transmitted to the PLC control cabinet 6 to trigger the drainage preparation program.

[0058] S2, Sea level gauge 501 continuously monitors the external tidal water level, and PLC control cabinet 6 determines whether the natural drainage conditions are met based on real-time tidal data, that is, an effective level difference is formed between the level control well 405 and the open sea.

[0059] S3. When the arrival of low tide is detected and the sea level is lower than the water level in the level control well 405, the PLC control cabinet 6 automatically opens the electric butterfly valve 306 and the electric butterfly valve 403 to achieve gravity-driven discharge without power, thereby reducing the energy consumption of the water pump 302.

[0060] S4. If the tidal level difference is insufficient or the drainage speed needs to be accelerated, the PLC control cabinet 6 starts the water pump 302. Combined with the flow data fed back by electromagnetic flow meter 1 304 and electromagnetic flow meter 2 404, the operating frequency of the water pump 302 and the opening of the electric butterfly valve are dynamically adjusted to achieve precise flow control.

[0061] S5. During the drainage process, the water flows through the filter cylinder 202 and drives the auxiliary water wheel 206 to rotate, which drives the scraper 13 to continuously scrape off the impurities attached to the surface of the filter screen 204 and the activated carbon screen 205 and the inner wall of the filter cylinder 202 to prevent blockage and maintain the flow capacity.

[0062] S6. When the system executes the backwashing or slag discharge procedure, the PLC control cabinet 6 controls the chip discharge valve 14 to open, and discharges the impurities accumulated at the bottom of the filter cartridge 202 through the chip discharge pipe 15. At the same time, the high-pressure backwash nozzle (not shown in the figure) can assist in cleaning with the spray water flow. The maintenance port opened on the filter cartridge 202 is equipped with a sealing cover 16 and two latches 17, which can be easily opened when maintenance is required and tightly closed after maintenance to ensure subsequent stable operation.

[0063] S7. When the water is delivered to the disinfection oxidation tank 401, the metering pump 11 extracts the treatment agent from the dosing cylinder 12 according to the preset program or water quality parameters and accurately adds it to the delivery pipe 402 to ensure that the discharged water meets the environmental protection standards. The entire process is controlled by the PLC control cabinet 6 in conjunction with the electric butterfly valve 403, the electromagnetic flow meter 404 and the metering pump 11 to complete the dosing control.

[0064] S8 and PLC control cabinet 6 receive signals from high level gauge 502 and low level gauge 503 in real time to monitor the operation status of liquid level control well 405 and avoid the risk of overflow or dry pumping. When the temperature of the equipment compartment rises, the temperature sensor triggers the auxiliary fan 8 to start, and introduces external airflow through the air inlet 10 of the auxiliary cylinder 7. After being filtered by the filter cover 9, the airflow is used to force heat dissipation of PLC control cabinet 6 and electrical components.

[0065] S9. The entire system's operating status is centrally managed by PLC control cabinet 6, including functional modules such as fault alarm, cycle monitoring, and backflow early warning (not shown in the figure), and intelligent and energy-saving drainage control is achieved through data interaction between various sensors and actuators.

[0066] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A control system for drainage utilizing tidal level differences, comprising a storage and drainage control room (1), characterized in that, A filter assembly (2) is installed on one side of the storage and discharge control room (1). One end of the filter assembly (2) is connected to a control assembly one (3). One end of the control assembly one (3) is connected to a control assembly two (4). One side of the control assembly two (4) is connected to the inside of the storage and discharge control room (1). A monitoring assembly (5) is installed inside the storage and discharge control room (1). The filter assembly (2) includes a storage and discharge control room (1) with a partition plate (201) inside. The partition plate (201) divides the storage and discharge control room (1) into a water storage room and a discharge control room. Multiple filter cylinders (202) are provided on one side of the partition plate (201). Multiple sliding grooves are opened inside the filter cylinders (202). Filter frames (203) are provided inside the sliding grooves. Filter screens (204) and activated carbon screens (205) are provided inside the filter frames (203). An auxiliary water wheel (206) is connected to one side of the filter frame (203) through a bearing. One end of the auxiliary water wheel (206) is connected through the activated carbon screen (205) and the filter screen (204) to agitate and clean the trapped impurities.

2. The control system for drainage using tidal level difference according to claim 1, characterized in that, The control component 1 (3) includes a filter cartridge (202) with one end connected to a conveying pipe 1 (301). One end of the conveying pipe 1 (301) is connected to the storage and discharge control room (1). Multiple water pumps (302), multiple check valves (303) and an electromagnetic flow meter 1 (304) are sequentially installed on the conveying pipe 1 (301). The water pumps (302) and check valves (303) are located inside the discharge control room. A conveying pipe 2 (305) is connected to one side of the storage and discharge control room (1). Multiple electric butterfly valves 1 (306) are installed on the conveying pipe 2 (305).

3. The control system for drainage using tidal level difference according to claim 2, characterized in that, The control component 2 (4) includes a conveying pipe 2 (305) with one end connected to a disinfection oxidation tank (401), a conveying pipe 3 (402) connected to one side of the disinfection oxidation tank (401), a plurality of electric butterfly valves 2 (403) and electromagnetic flow meters 2 (404) respectively installed on the conveying pipe 3 (402), a liquid level control well (405) connected to one end of the conveying pipe 3 (402) and the conveying pipe 1 (301), and a liquid level pipe (406) connected to the liquid level control well (405).

4. A control system for drainage utilizing tidal level differences according to claim 3, characterized in that, The monitoring component (5) includes a sea level gauge (501) installed on the level pipe (406), a high level gauge (502) and a low level gauge (503) installed inside the level control well (405), and two level gauges (504) installed on both sides of the inside of the water storage chamber.

5. A control system for drainage utilizing tidal level differences according to claim 4, characterized in that, The emission control room is equipped with a PLC control cabinet (6). Auxiliary cylinders (7) are installed on both sides of the PLC control cabinet (6) and on both sides of the storage and emission control room (1). An auxiliary fan (8) and a filter cover (9) are installed inside the auxiliary cylinder (7). Air inlets (10) are evenly distributed on the auxiliary cylinder (7).

6. A control system for drainage utilizing tidal level differences according to claim 5, characterized in that, A metering pump (11) is installed on the delivery pipe (402), and a dosing cylinder (12) is installed above the metering pump (11).

7. A control system for drainage utilizing tidal level differences according to claim 6, characterized in that, The auxiliary water wheel (206) is equipped with multiple scraper blades (13), two of which have one side in contact with the filter screen (204), and the other four scraper blades (13) are in contact with the inside of the filter cylinder (202).

8. A control system for drainage utilizing tidal level differences according to claim 7, characterized in that, Multiple filter cartridges (202) are equipped with chip discharge valves (14), one end of which is connected to a chip discharge pipe (15), and the other end of the chip discharge pipe (15) is connected to the storage and discharge control room (1).

9. A control system for drainage utilizing tidal level differences according to claim 8, characterized in that, The filter cartridge (202) has a maintenance port, and a sealing cover (16) is hinged inside the maintenance port. The sealing cover (16) and the filter cartridge (202) are provided with multiple latches (17).

10. A control method for a drainage control system utilizing tidal level differences, used in the drainage control system utilizing tidal level differences as described in claim 9, characterized in that... Includes the following steps: S1. After the system starts, the level gauge (504) in the water storage room monitors the internal water level in real time. When the water level reaches the set threshold, the signal is transmitted to the PLC control cabinet (6) to trigger the drainage preparation program. S2, the sea level gauge (501) continuously monitors the external tidal water level, and the PLC control cabinet (6) determines whether the natural drainage conditions are met based on the real-time tidal data, that is, an effective level difference is formed between the level control well (405) and the open sea; S3. When the arrival of low tide is detected and the sea level is lower than the water level in the level control well (405), the PLC control cabinet (6) automatically opens the electric butterfly valve one (306) and the electric butterfly valve two (403) to achieve unpowered self-flow discharge by using gravitational potential energy, thereby reducing the energy consumption of the water pump (302). S4. If the tidal level difference is insufficient or the drainage speed needs to be accelerated, the PLC control cabinet (6) starts the water pump (302), and combines the flow data fed back by electromagnetic flow meter one (304) and electromagnetic flow meter two (404) to dynamically adjust the operating frequency of the water pump (302) and the opening of electric butterfly valve one (306) and electric butterfly valve two (403) to achieve precise flow control. S5. During the drainage process, the water flows through the filter cylinder (202) and drives the auxiliary water wheel (206) to rotate, which drives the scraper (13) to continuously scrape off the impurities attached to the surface of the filter screen (204) and activated carbon screen (205) and the inner wall of the filter cylinder (202) to prevent blockage and maintain the flow capacity. S6. When the system executes the slag discharge procedure and maintenance, the PLC control cabinet (6) controls the chip discharge valve (14) to open, and discharge the impurities accumulated at the bottom of the filter cylinder (202) through the chip discharge pipe (15). The maintenance port opened on the filter cylinder (202) is equipped with a sealing cover (16) and two latches (17), which can be easily opened when maintenance is required, and tightly closed after maintenance to ensure subsequent stable operation. S7. When the water is transported to the disinfection oxidation tank (401), the metering pump (11) extracts the treatment agent from the dosing cylinder (12) according to the preset program or water quality parameters and accurately adds it to the delivery pipe three (402) to ensure that the discharged water meets the environmental protection standards. The entire process is coordinated by the PLC control cabinet (6) to complete the dosing control by linking the electric butterfly valve two (403), the electromagnetic flow meter two (404) and the metering pump (11). S8, PLC control cabinet (6) receives signals from high level gauge (502) and low level gauge (503) in real time, monitors the operating status of level control well (405) to avoid the risk of overflow or dry pumping; when the temperature of the equipment compartment rises, the temperature sensor triggers the auxiliary fan (8) to start, introduces external airflow through the air inlet (10) of the auxiliary cylinder (7), and after dust removal by the filter cover (9), it provides forced heat dissipation to the PLC control cabinet (6) and electrical components; S9. The entire system's operating status is centrally managed by the PLC control cabinet (6), and intelligent and energy-saving drainage control is achieved through data interaction between various sensors and actuators.

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