Water conservancy construction sewage treatment equipment

Abstract

The invention belongs to the technical field of water pollution control and treatment, particularly relates to water conservancy construction sewage treatment equipment, and provides the following scheme aiming at the problems that the links of dosing mixing, precipitation, filtration, sterilization and the like of existing equipment are mostly independent equipment, and the traditional filtration equipment mostly adopts a single filter screen: the water conservancy construction sewage treatment equipment comprises a cylindrical carbon steel shell, supporting legs are fixedly installed at the bottom of the cylindrical carbon steel shell, a water inlet buffering mechanism is fixedly installed in the cylindrical carbon steel shell, the water inlet buffering mechanism is communicated with a water inlet and a dosing unit, and the multifunctional rotary drum mechanism is arranged in the cylindrical carbon steel shell. Whole-flow integrated treatment of sewage is realized, and the treatment efficiency and the medicament mixing uniformity are improved; the blocking rate and the maintenance cost of the filter screen are reduced by a dual self-cleaning mechanism; the treatment time can be regulated and controlled to improve the standard-reaching rate of water quality, the construction severe environment is adapted, and the whole-process automatic operation is convenient.

Description

Technical Field

[0001] This invention relates to the field of water pollution control and treatment technology, and in particular to a wastewater treatment device for water conservancy construction. Background Technology

[0002] Water conservancy construction, such as foundation pit excavation, cofferdam drainage, and concrete curing, generates wastewater characterized by high suspended solids concentration, large instantaneous fluctuations, and limited power supply at the construction site. The process also produces large quantities of wastewater containing silt, suspended particulate matter, and chemical residues. Direct discharge would cause water pollution; therefore, strict treatment to meet standards is necessary before discharge. Existing wastewater treatment equipment for water conservancy construction suffers from the following core technological deficiencies: The processes of chemical mixing, sedimentation, filtration, and sterilization are mostly independent equipment that need to be connected by pipelines, resulting in a large footprint, easy leakage during sewage transfer, poor coordination between processes, and low treatment efficiency. Traditional filtration equipment often uses a single filter screen. In water conservancy construction wastewater, the impurity content is high, and the filter screen is easily clogged by large particles of impurities. Frequent manual disassembly and cleaning are required, resulting in high maintenance costs and affecting the construction progress. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing equipment where dosing, mixing, sedimentation, filtration, and sterilization are mostly handled by separate devices, and traditional filtration equipment often uses a single filter screen. This invention proposes a water conservancy construction wastewater treatment device that integrates dosing, mixing, sedimentation, filtration, self-cleaning, sterilization, and water quality testing throughout the entire process. It ensures precise dosing ratios of chemicals and wastewater through an adaptive influent dosing mechanism, enhances impurity removal through multi-stage self-cleaning filtration, and flexibly extends treatment time through a lockable drum mechanism, ultimately improving wastewater treatment efficiency and compliance rates while reducing maintenance costs.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A wastewater treatment device for water conservancy construction includes a cylindrical carbon steel shell, with support legs fixedly installed at the bottom of the cylindrical carbon steel shell. An inlet buffer mechanism is fixedly installed inside the cylindrical carbon steel shell, and the inlet buffer mechanism is connected to an inlet and a dosing unit. The device also includes: The multi-functional rotary drum mechanism is located inside the cylindrical carbon steel shell and is used to divide the cylindrical carbon steel shell into a primary sedimentation and chemical mixing chamber, a fine filtration and self-cleaning chamber, a clear water buffer sterilization chamber, and a water quality testing and discharge chamber. A sealing plate is installed at the tail end of a cylindrical carbon steel shell, and the sealing plate is connected to the water quality detection and discharge chamber. The ultraviolet sterilization unit is located inside the cylindrical carbon steel shell, in the position of the clean water buffer sterilization chamber; The fine filtration mechanism is located inside the cylindrical carbon steel shell, connected to the multi-functional rotating drum mechanism, and situated in the position of the fine filtration and self-cleaning chamber.

[0005] Compared with existing technologies, this invention precisely divides the cylindrical shell into four independent functional compartments through a multi-functional drum mechanism: a primary sedimentation and chemical mixing compartment, a fine filtration and self-cleaning compartment, etc. Each compartment is linked in an orderly manner through the drum's connecting holes, realizing integrated treatment of the entire process of wastewater "chemical dosing-sedimentation-filtration-sterilization-detection". It eliminates the need for external pipeline transportation, significantly reduces the risk of leakage, reduces the footprint, and overcomes the shortcomings of existing equipment where each link is independent and lacks coordination.

[0006] Preferably, the water inlet buffer mechanism includes an arc-shaped shell cavity, which is fixedly installed on the top inner wall of a cylindrical carbon steel shell and located inside the primary sedimentation and dosing mixing chamber. The water inlet is connected to the arc-shaped shell cavity, and a discharge hole is provided at the bottom of the arc-shaped shell cavity. Two support blocks are fixedly installed at the bottom of the arc-shaped shell cavity, and the same flip cover is rotatably installed between the two support blocks via a pivot pin. A sealing plug is fixedly installed on the top of the flip cover, and the sealing plug is sealed to the discharge hole. A torsion spring is provided between the flip cover and the support blocks. A second permanent magnet is fixedly installed on the inner side of the flip cover, and a first permanent magnet is fixedly installed at the bottom of the arc-shaped shell cavity. The second permanent magnet attracts the first permanent magnet.

[0007] Compared with existing technologies, this invention designs a dual-control flip-top cover structure of "gravity and magnetism". The flip-top drainage is triggered by the weight threshold of sewage, and the dosage is precisely controlled by the solenoid valve to achieve dynamic adaptation between water inflow and dosing. The sewage falling impact process simultaneously completes the initial mixing, improves the mixing uniformity of the agent and sewage, and solves the problem of substandard treatment caused by the imbalance of agent ratio and uneven mixing in traditional equipment.

[0008] Preferably, the dosing unit includes a dosing tube, the inner end of which is connected to an arc-shaped cavity, the outer end of which is connected to a drug storage box, and a second solenoid valve is provided on the dosing tube.

[0009] Preferably, the multifunctional drum mechanism includes three first drum plates and a rotating shaft. The rotating shaft is laterally rotatably installed inside a cylindrical carbon steel shell. All three first drum plates are fixedly installed inside the cylindrical carbon steel shell. The rotating shaft is rotatably connected to the three first drum plates. Each of the three first drum plates has a first connecting hole. A third permanent magnet is embedded in the outer side of each of the three first connecting holes. A first drum disc, a second drum disc, and a third drum disc are fixedly installed on the outer side of the rotating shaft. The first drum disc, the second drum disc, and the third drum disc are connected to the three first drum plates. The plates are fitted together. The first, second, and third drum plates are respectively provided with a first connecting hole, a second connecting hole, and a third connecting hole. A fourth permanent magnet is provided on the outside of each of the first, second, and third connecting holes. The three third permanent magnets cooperate with the three first connecting holes. The included angles between the first, second, and third connecting holes are 90 degrees in sequence. Four water flow impact plates are fixedly installed on the outside of the rotating shaft. The included angles between the four water flow impact plates are 90 degrees in sequence. All four water flow impact plates are located below the discharge hole.

[0010] Preferably, the ultraviolet sterilization unit includes an ultraviolet waterproof lamp, which is fixedly installed on the inner wall of the cylindrical carbon steel shell and located inside the clean water buffer sterilization chamber. A controller is connected to the ultraviolet waterproof lamp, and the controller is located on the outer side of the cylindrical carbon steel shell.

[0011] Preferably, the fine filtration mechanism includes a metal ring, which is fixedly installed on the inner wall of a cylindrical carbon steel shell and located inside the fine filtration and self-cleaning chamber. A rigid support mesh and a shape memory alloy wire mesh are fixedly installed on the inner side of the metal ring. Two protective tubes are fixedly installed on the metal ring, and pressure-sensing diaphragms are fixedly installed at the bottom ends of the two protective tubes. The two pressure-sensing diaphragms are located on the front and rear sides of the shape memory alloy wire mesh, respectively. The same pressure controller is connected to the two pressure-sensing diaphragms. The pressure controller is located on the outer side of the cylindrical carbon steel shell. A heating wire is provided on the inner side of the shape memory alloy wire mesh, and the heating wire is connected to the pressure controller.

[0012] Compared with existing technologies, this invention uses a composite filter layer composed of shape memory alloy wire mesh and a flexible scraper array. When the pressure difference increases to a threshold due to blockage of the filter layer, a micro heating channel is automatically triggered, causing the shape memory alloy mesh to undergo instantaneous phase deformation, simultaneously realizing two self-cleaning actions: "mesh expansion for sewage discharge" and "deformation-driven scraping". The entire process requires no machine shutdown or external mechanical intervention.

[0013] Preferably, four flexible scraper arrays are fixedly installed on the outer side of the rotating shaft, and all four flexible scraper arrays are in contact with the outer side of the rigid support mesh.

[0014] Preferably, a detector is provided on the outer side of the sealing plate, and a detection head is provided on the detector. The detection head is located inside the water quality detection and discharge chamber. A clean water outlet is connected to the bottom side of the sealing plate. A first solenoid valve is provided on the clean water outlet. An electromagnetic clutch power mechanism is provided on the outer side of the sealing plate. The electromagnetic clutch power mechanism includes an electromagnetic clutch and a motor. The rotating shaft is connected to the motor through the electromagnetic clutch.

[0015] Preferably, the bottom side of the cylindrical carbon steel shell is provided with four discharge pipes, which are respectively connected to the primary sedimentation and chemical mixing chamber, the fine filtration and self-cleaning chamber, the clear water buffer sterilization chamber, and the water quality detection and discharge chamber.

[0016] The beneficial effects of the water conservancy construction wastewater treatment equipment described in this invention are as follows: 1. The cylindrical shell is divided into four independent compartments by a multi-functional rotary drum mechanism: primary sedimentation and chemical mixing compartment, fine filtration and self-cleaning compartment, clear water buffer sterilization compartment, and water quality testing and discharge compartment. The compartments are connected in an orderly manner through the connecting holes of the rotary drum mechanism. Wastewater is treated in the shell, eliminating the need for external transfer, reducing the risk of leakage, and reducing the footprint. 2. The design incorporates a flip-top cover structure controlled by both gravity and magnetism. When the weight of the sewage in the arc-shaped shell reaches a threshold, the flip-top cover overcomes the attraction of the torsion spring and permanent magnet to flip open, enabling quantitative water intake. The dosing unit is linked to the inlet and precisely controls the amount of chemicals added through a solenoid valve. Preliminary mixing is completed during the sewage descent process, improving the uniformity of mixing. 3. Multi-stage filtration and dual self-cleaning synergistic design: It adopts a dual filtration structure of "rigid support mesh and shape memory alloy wire mesh". The rigid support mesh intercepts large particles of impurities, while the shape memory alloy wire mesh filters fine suspended particles, improving filtration accuracy. 4. Self-cleaning dual protection: The rotating shaft drives the flexible scraper array to rotate, which scrapes and cleans the rigid support mesh in real time; when the shape memory alloy wire mesh is blocked, the pressure sensing diaphragm detects the water pressure difference and triggers the heating wire to heat the alloy mesh to cause an austenitic phase transformation, and the mesh size is enlarged to achieve automatic unblocking. 5. An electromagnetic clutch power mechanism is added. When the water quality test fails to meet the standard, the motor locks the rotating shaft through the electromagnetic clutch, keeping the connecting hole of the drum disc in a misaligned state, extending the treatment time of each chamber for sedimentation, filtration and sterilization, without the need for backflow and reprocessing, thus improving the compliance rate. 6. Ultraviolet waterproof lamps are installed in the clean water buffer sterilization chamber to achieve efficient sterilization. A detector is installed in the water quality testing and discharge chamber to monitor the water quality in real time. Once the water quality meets the standards, the clean water outlet is controlled by a solenoid valve to discharge the clean water. If the water quality does not meet the standards, the treatment time is extended to ensure stable discharge water quality.

[0017] This invention achieves integrated wastewater treatment throughout the entire process, improving treatment efficiency and reagent mixing uniformity; a dual self-cleaning mechanism reduces filter clogging rate and maintenance costs; adjustable treatment time improves water quality compliance rate; it is adaptable to harsh construction environments; and the entire process is automated and convenient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a wastewater treatment device for water conservancy construction proposed in this invention; Figure 2 This is a bottom view structural diagram of a sewage treatment device for water conservancy construction proposed in this invention; Figure 3 This is a side view of a wastewater treatment device for water conservancy construction proposed in this invention. Figure 4 This is an internal structural schematic diagram of a sewage treatment device for water conservancy construction proposed in this invention; Figure 5 The present invention provides a structural schematic diagram of the multifunctional drum mechanism, the water inlet buffer mechanism, the ultraviolet sterilization unit, and the fine filtration mechanism. Figure 6 A bottom view schematic diagram of the multifunctional drum mechanism, water inlet buffer mechanism, ultraviolet sterilization unit, and fine filtration mechanism proposed in this invention; Figure 7 This invention provides a structural schematic diagram of the multifunctional rotary drum mechanism, the ultraviolet sterilization unit, and the fine filtration mechanism. Figure 8 A schematic diagram of the structure of the multifunctional drum mechanism proposed in this invention is provided; Figure 9 This is a side view of the multifunctional drum mechanism proposed in this invention. Figure 10 This invention provides a schematic diagram of the water inlet buffer mechanism. Figure 11 A bottom view of the structure of the water inlet buffer mechanism proposed in this invention; Figure 12 A schematic diagram of the sealing plate is provided for this invention; Figure 13 This is a side view of the sealing plate proposed in this invention. Figure 14 This invention presents a schematic diagram of the structure of the ultraviolet sterilization unit; Figure 15 This invention provides a structural schematic diagram of a fine filtration mechanism; Figure 16 This is a side view of the fine filtration mechanism proposed in this invention. Figure 17 The present invention provides a structural schematic diagram of a metal ring, a shape memory alloy wire mesh, and a heating wire.

[0019] In the diagram: 1. Cylindrical carbon steel shell; 11. Primary sedimentation and chemical mixing chamber; 101. Support leg; 102. Discharge pipe; 12. Fine filtration and self-cleaning chamber; 13. Clear water buffer and sterilization chamber; 14. Water quality testing and discharge chamber; 2. Blocking plate; 21. Detector; 211. Detection head; 22. Clear water outlet; 221. First solenoid valve; 23. Electromagnetic clutch power mechanism; 3. Multifunctional drum mechanism; 31. Water flow impact plate; 32. First drum plate; 33. First drum plate; 331. First connecting hole; 34. Second drum plate; 341. Second connecting hole; 35. Third drum plate; 351. Third connecting hole 36. Flexible scraper array; 37. Rotating shaft; 4. Water inlet buffer mechanism; 41. Arc-shaped shell cavity; 411. Discharge hole; 412. First permanent magnet; 42. Water inlet; 43. Dosing pipe; 431. Second solenoid valve; 432. Medicine storage box; 44. Flip-top cover; 441. Second permanent magnet; 442. Support block; 443. Sealing plug; 5. Ultraviolet sterilization unit; 51. Ultraviolet waterproof lamp; 52. Controller; 6. Fine filtration mechanism; 61. Metal ring; 62. Shape memory alloy wire mesh; 621. Heating wire; 63. Rigid support mesh; 64. Pressure controller; 65. Protective tube; 65. Pressure sensing diaphragm. Detailed Implementation

[0020] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this embodiment, and not all embodiments.

[0021] Example 1: Refer to Figures 1-17 A wastewater treatment device for water conservancy construction includes a cylindrical carbon steel shell 1, an inlet buffer mechanism 4, a multi-functional rotating drum mechanism 3, a sealing plate 2, an ultraviolet sterilization unit 5, and a fine filtration mechanism 6. The bottom of the cylindrical carbon steel shell 1 is fixedly equipped with support legs 101, and four discharge pipes 102 are connected to the bottom side; the multi-functional drum mechanism 3 is horizontally arranged inside the cylindrical carbon steel shell 1, dividing it into a primary sedimentation and chemical mixing chamber 11, a fine filtration and self-cleaning chamber 12, a clear water buffer sterilization chamber 13, and a water quality testing and discharge chamber 14, which are independent in sequence. The four discharge pipes 102 are connected to the four chambers one by one. Reference Figure 10 , Figure 11In this embodiment, the water inlet buffer mechanism 4 is fixed to the inner wall of the top of the cylindrical carbon steel shell 1 and is located in the primary sedimentation and dosing mixing chamber 11. It includes an arc-shaped shell cavity 41, a flip cover 44, and a dosing unit. The top of the arc-shaped shell cavity 41 is connected to a water inlet 42, and the bottom is provided with a discharge hole 411. Two support blocks 442 are fixed at the bottom. The flip cover 44 is rotatably installed between the two support blocks 442 through a shaft pin. A sealing plug 443 that seals with the discharge hole 411 is fixed at the top. A torsion spring is provided between the flip cover 44 and the support block 442. A second permanent magnet 441 is fixed inside. A first permanent magnet 412 that attracts the second permanent magnet 441 is correspondingly fixed at the bottom of the arc-shaped shell cavity 41. The dosing unit includes a dosing pipe 43, a medicine storage box 432, and a second solenoid valve 431. The inner end of the dosing pipe 43 is connected to the arc-shaped shell cavity 41, and the outer end is connected to the medicine storage box 432. The second solenoid valve 431 is provided on the dosing pipe 43. Specifically, the attraction between the first permanent magnet 412 and the second permanent magnet 441 is 8-12N, and the preload torque of the torsion spring is 5-8N. When the weight of the sewage in the arc-shaped cavity 41 is ≥15N, the flip cover 44 overcomes the attraction and torque and flips open.

[0022] Reference Figures 15-17 In this embodiment, the fine filtration mechanism 6 is fixed inside the cylindrical carbon steel shell 1 and located within the fine filtration and self-cleaning chamber 12. It includes a metal ring 61, a rigid support mesh 63, a shape memory alloy mesh 62, and a pressure control component. The metal ring 61 is fixed to the inner wall of the shell, and the rigid support mesh 63 and the shape memory alloy mesh 62 are sequentially fixed to the inner side of the metal ring 61. A heating wire 621 is provided on the inner side of the shape memory alloy mesh 62. The pressure control component includes two protective tubes 65, two pressure sensing diaphragms 66, and a pressure controller 64. The two protective tubes 65 are fixed to the metal ring 61, and the pressure sensing diaphragms 66 are fixed to the bottom of the protective tubes 65 and located on both sides of the shape memory alloy mesh 62. The pressure controller 64 is located on the outer side of the shell and is electrically connected to the pressure sensing diaphragms 66 and the heating wire 621, respectively. Specifically, the pressure detection range of the pressure sensing diaphragm 66 is 0-0.5MPa, and the preset water pressure difference threshold is 0.1MPa. When the water pressure difference between the two sides is ≤0.1MPa, the pressure controller 64 triggers the heating wire 621 to be energized.

[0023] The shape memory alloy wire mesh 62 is made of Ni-Ti alloy material, with an austenitic phase transformation temperature of 60-80℃. After the heating wire 621 is energized, it can be heated to the phase transformation temperature within 1-2 seconds, and the mesh magnification after deformation is 3-5 times.

[0024] The flexible scraper array 36 is made of polyurethane, with a scraper thickness of 3-5mm, a Shore A hardness of 70-80, and a contact pressure of 0.05-0.1MPa with the rigid support mesh 63.

[0025] Reference Figures 4-9 In this embodiment, the multifunctional drum mechanism 3 includes a rotating shaft 37, three first drum plates 32, a first drum disk 33, a second drum disk 34, and a third drum disk 35. The rotating shaft 37 is laterally rotatably mounted on the inner wall of the housing. The three first drum plates 32 are fixed to the inner wall of the housing and rotatably connected to the rotating shaft 37. Each first drum plate 32 has a first connecting hole 321, and a third permanent magnet is embedded in the outer side of the hole. The first drum disk 33, the second drum disk 34, and the third drum disk 35 are fixed on the rotating shaft 37 and respectively connected to the three first drum plates 33, 34, and 35. 2. The joint is fitted with a first connecting hole 331, a second connecting hole 341, and a third connecting hole 351. A fourth permanent magnet is provided on the outside of the hole to attract the third permanent magnet. The angle between the first connecting hole 331, the second connecting hole 341, and the third connecting hole 351 is 90°. Four water flow impact plates 31 with an angle of 90° are fixed on the outside of the rotating shaft 37. The water flow impact plates 31 are located below the discharge hole 411. Four flexible scraper arrays 36 are also fixed on the outside of the rotating shaft 37. The flexible scraper arrays 36 are in contact with the outside of the rigid support mesh 63. Specifically, the attraction between the third and fourth permanent magnets ensures that the drum disc fits tightly with the first drum plate 32, and there is no leakage when the connecting holes are aligned.

[0026] Reference Figure 12 , Figure 13 In this embodiment, the sealing plate 2 seals the tail end of the cylindrical carbon steel shell 1 and is connected to the water quality detection and discharge chamber 14. The outer side is provided with a detector 21 and an electromagnetic clutch power mechanism 23, and the bottom side is connected to a clean water outlet 22. The detection head 211 of the detector 21 extends into the water quality detection and discharge chamber 14, and the clean water outlet 22 is provided with a first solenoid valve 221. The electromagnetic clutch power mechanism 23 includes an electromagnetic clutch and a motor, and the rotating shaft 37 is connected to the motor through the electromagnetic clutch. Reference Figure 14 In this embodiment, the ultraviolet sterilization unit 5 is fixed inside the cylindrical carbon steel shell 1 and located in the clean water buffer sterilization chamber 13. It includes an ultraviolet waterproof lamp 51 and a controller 52. The ultraviolet waterproof lamp 51 is fixed to the inner wall of the shell, and the controller 52 is located on the outer side of the shell and is electrically connected to the ultraviolet waterproof lamp 51.

[0027] Reference Figure 1 In this embodiment, both the first solenoid valve 221 and the second solenoid valve 431 are electromagnetic pilot-operated solenoid valves with a rated voltage of 24V, a response time of ≤0.2s, and a waterproof rating of ≥IP65.

[0028] The installation steps of the device in this embodiment are as follows: 1. Place the cylindrical carbon steel shell 1 horizontally on the installation foundation, level it using the support legs 101, and fix it at the bottom with expansion bolts; Four discharge pipes 102 are welded to the corresponding compartment positions at the bottom of the hull, and manual ball valves are installed thereon; 2. Weld the three first drum plates 32 evenly to the inner wall of the housing, ensuring consistent spacing; The rotating shaft 37 passes through the shaft holes of the three first drum plates 32 and is rotatably connected to the inner wall of the housing through bearings; Three rotating drums 33 / 34 / 35, four water flow impact plates 31, and four flexible scraper arrays 36 are fixed sequentially at corresponding positions on the rotating shaft 37 to ensure that the rotating drums are in contact with the first rotating drum plate 32 and that the flexible scraper arrays 36 are in contact with the rigid support net 63. 3. The metal ring 61 is welded to the inner wall of the shell of the fine filter and self-cleaning chamber 12, and the rigid support mesh 63 and the shape memory alloy wire mesh 62 are installed in sequence and fixed with bolts; Heating wire 621 is embedded inside shape memory alloy wire mesh 62, two protective tubes 65 are welded to metal ring 61, and pressure sensing diaphragm 66 is fixed to the bottom of protective tube 65; The pressure controller 64 is mounted on the outside of the housing and is connected to the pressure sensing diaphragm 66 and the heating wire 621 via wires. 4. Installation of the water inlet buffer mechanism and ultraviolet sterilization unit: The arc-shaped shell cavity 41 is welded to the inner wall of the top of the shell of the primary sedimentation and dosing mixing chamber 11, and the water inlet 42 extends out of the outer side of the shell; The flip cover 44 is mounted between the support blocks 442 via a shaft pin, and a torsion spring is installed to ensure that the sealing plug 443 and the discharge hole 411 are sealed together. One end of the dosing tube 43 is connected to the arc-shaped cavity 41, and the other end is connected to the drug storage box 432, where a second solenoid valve 431 is installed; The UV waterproof lamp 51 is fixed to the inner wall of the shell of the clean water buffer sterilization chamber 13, and the controller 52 is installed on the outside of the shell and connected to the power supply and the UV waterproof lamp 51. 5. Installation of sealing plate and power components: The sealing plate 2 is welded to the tail end of the shell, the detector 21 is fixed to the outside of the sealing plate 2, and the detection head 211 extends into the water quality detection and discharge chamber 14; The clean water outlet 22 is welded to the bottom side of the sealing plate 2, and the first solenoid valve 221 is installed there. The electromagnetic clutch power mechanism 23 is fixed to the outside of the sealing plate 2. The electromagnetic clutch is connected to the rotating shaft 37, and the motor is connected to the electromagnetic clutch. 6. Check the tightness of each component connection, test the rotation flexibility of the rotating shaft 37, and ensure that there is no leakage when the connecting hole of the drum is aligned; Test the flip-top sensitivity of the 44-fold flip cover to verify whether it opens normally when the sewage weight reaches 15N. Adjust the pressure controller 64, set the water pressure difference threshold to 0.1MPa, and test whether the shape memory alloy wire mesh 62 deforms normally after the heating wire 621 is energized; Debug the electromagnetic clutch power mechanism 23 and verify whether the rotating shaft 37 can be effectively locked. The wastewater treatment process was simulated to test the connection sequence of each compartment, filtration effect, sterilization effect, and accuracy of water quality testing.

[0029] Working principle: First, adaptive mixing of influent and chemical dosing. Initial state: The flip cover 44 is in the closed state under the preload of the torsion spring and the attraction of the first permanent magnet 412 and the second permanent magnet 441, and the sealing plug 443 is tightly fitted with the discharge hole 411; the second solenoid valve 431 is in the closed state. Water intake start-up: Water conservancy construction sewage is injected into the arc-shaped shell cavity 41 through the water inlet 42. At the same time, the controller 52 opens the second solenoid valve 431. The flocculant in the storage box 432 is injected into the arc-shaped shell cavity 41 through the dosing pipe 43. The amount of flocculant added and the amount of water inlet are precisely controlled according to the preset ratio of 1:1000. Quantitative drainage mixing: As sewage is continuously injected, the weight of sewage in the arc-shaped shell cavity 41 gradually increases. When the weight reaches the threshold, the gravity of sewage overcomes the torsion of the torsion spring and the attraction of the permanent magnet, pushing the flip cover 44 to flip open around the shaft pin. The sealing plug 443 is disengaged from the discharge hole 411, and the mixture of sewage and agent falls rapidly through the discharge hole 411, impacting the water flow impact plate 31 below. Flip-top reset: After the mixed liquid is discharged, the flip-top 44 is reset under the attraction of the torsion spring and the permanent magnet, and the sealing plug 443 re-seals the discharge hole 411, and the next round of water inlet and chemical dosing cycle begins.

[0030] Second, switching between drum drive and compartment connection. The first rotation switches from primary sedimentation to fine filtration: the mixed liquor impacts the water flow impact plate 31, generating a clockwise rotational torque, which drives the rotating shaft 37 to rotate 90°; the rotating shaft 37 simultaneously drives the first rotating drum 33, the second rotating drum 34, and the third rotating drum 35 to rotate 90°. Under the attraction of the third and fourth permanent magnets, the first connecting hole 331 of the first drum disk 33 and the first connecting hole 321 of the corresponding first drum plate 32 are precisely aligned and connected, and the primary sedimentation and chemical mixing chamber 11 and the fine filtration and self-cleaning chamber 12 are connected. The mixture in the primary sedimentation and chemical mixing chamber 11 undergoes primary sedimentation under the action of the chemical agent. The sedimentation time is about 10 minutes. The supernatant flows into the fine filtration and self-cleaning chamber 12 through the connecting hole. Second rotation switching fine filtration → clear water buffer sterilization: After the second round of water intake and chemical addition is completed, the mixed liquid impacts the water flow impact plate 31 again, driving the rotating shaft 37 to rotate 90° for the second time; at this time, the first connecting hole 331 of the first drum plate 33 and the first connecting hole 321 of the first drum plate 32 are misaligned and closed, and the second connecting hole 341 of the second drum plate 34 is aligned and connected with the corresponding first connecting hole 321 of the first drum plate 32. When the rotating shaft 37 rotates, it simultaneously drives the four flexible scraper arrays 36 to rotate. The scrapers sweep along the surface of the rigid support net 63, scraping off the intercepted large particle impurities to the bottom of the fine filter and self-cleaning chamber 12. The fine filtration and self-cleaning chamber 12 contains double-filtered clean water that flows into the clean water buffer sterilization chamber 13 through the connecting hole; The third rotation switches to clean water buffer sterilization → water quality testing and discharge: After the third round of water intake and chemical addition is completed, the mixed liquid impacts the water flow impact plate 31, causing the rotating shaft 37 to rotate 90° for the third time; at this time, the second connecting hole 341 of the second drum plate 34 is misaligned with the first connecting hole 321 of the first drum plate 32 and closed, and the third connecting hole 351 of the third drum plate 35 is aligned and connected with the corresponding first connecting hole 321 of the first drum plate 32. Sterilized clean water in the clean water buffer sterilization chamber 13 flows into the water quality testing and discharge chamber 14 through the connecting hole.

[0031] Third, multi-stage filtration and self-cleaning work together. Dual filtration: Primary filtration: The water flow in the self-cleaning chamber 12 first passes through the rigid support mesh 63 to intercept large particles of impurities such as mud, sand and gravel with a particle size ≥1mm; Fine filtration: The water flow after primary filtration then passes through the shape memory alloy wire mesh 62 to filter fine suspended particles with a particle size ≥0.1mm, thereby achieving fine purification of water quality. Shape memory alloy wire mesh self-cleaning: Clogging detection: Two pressure sensing diaphragms 66 detect the water pressure difference on both sides of the shape memory alloy wire mesh 62 in real time. When the filter is clogged, the water flow resistance increases and the water pressure difference decreases to a preset threshold. Heating phase transformation unblocking: After the pressure controller 64 detects the water pressure difference threshold signal, it immediately controls the heating wire 621 to be energized and heated to raise the temperature of the shape memory alloy wire mesh 62 to 70℃, the austenitic phase transformation temperature. Reset: The shape memory alloy mesh 62 completes the austenitic phase transformation within 1-2 seconds, producing a preset wavy and violent deformation, and the mesh size increases from 0.1mm to 0.3mm, which quickly releases the trapped fine particles; after the blockage is cleared, the heating wire 621 is de-energized, and the alloy mesh cools naturally to room temperature, restoring the initial mesh size and continuing to perform the filtering function.

[0032] Fourth, ultraviolet sterilization and water quality testing before discharge. Ultraviolet sterilization: After clean water flows into the clean water buffer sterilization chamber 13, the controller 52 automatically turns on the ultraviolet waterproof lamp 51, which uses 254nm deep ultraviolet light to irradiate the clean water, destroying the DNA / RNA structure of bacteria and viruses in the water, thus achieving sterilization. Water quality testing: Sterilized clean water flows into the water quality testing and discharge chamber 14, and the detection head 211 of the detector 21 detects water quality parameters in real time: COD, SS, and turbidity; If the detected parameters meet the emission standards, the controller 52 opens the first solenoid valve 221, and the clean water is discharged through the clean water outlet 22. Handling of non-compliance: If the test parameters are not up to standard, the controller 52 closes the first solenoid valve 221 and simultaneously activates the electromagnetic clutch power mechanism 23: the electromagnetic clutch is energized and engaged, locking the motor and the rotating shaft 37, preventing the rotating shaft 37 from continuing to rotate, and keeping the connecting holes of each drum disc in a misaligned and closed state; the sterilization time of the clean water buffer sterilization chamber 13 and the residence time of the water quality detection and discharge chamber 14 are extended until the water quality meets the standard before the first solenoid valve 221 is opened for discharge.

[0033] The primary sedimentation of sludge at the bottom of each compartment, the sedimentation of silt in the dosing and mixing compartment, the scraped impurities in the fine filtration and self-cleaning compartment, the sterilization residue in the clear water buffer sterilization compartment, and the small amount of sediment in the water quality testing and discharge compartment can be periodically discharged through the manual ball valve of the corresponding discharge pipe 102. The discharge frequency is adjusted according to the impurity content of the sewage.

[0034] Example 2: Example 2 is the same as Example 1 in the rest, except that a liquid level gauge is added inside the arc-shaped cavity 41. If the flip cover 44 cannot be opened normally due to impurities, the controller 52 detects the liquid level in the arc-shaped cavity 41 through the liquid level gauge. When the liquid level exceeds the warning value, an audible and visual alarm is issued to remind the staff to clean the impurities. All structural shapes, sizes and materials of Example 1 are included in this application. In order to meet specific usage conditions, they can be selected and adjusted. The attached drawings are schematic structural diagrams. The actual dimensions can be adjusted appropriately.

[0035] The above description is only a preferred embodiment of this practice, but the scope of protection of this embodiment is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in this embodiment, based on the technical solution and inventive concept of this embodiment, should be covered within the scope of protection of this embodiment.

Claims

1. A wastewater treatment device for water conservancy construction, comprising a cylindrical carbon steel shell (1), wherein a support leg (101) is fixedly installed at the bottom of the cylindrical carbon steel shell (1), characterized in that, The cylindrical carbon steel shell (1) is internally fixedly equipped with a water inlet buffer mechanism (4), which is connected to a water inlet (42) and a dosing unit, and also includes: The multi-functional rotary drum mechanism (3) is set inside the cylindrical carbon steel shell (1) and is used to divide the cylindrical carbon steel shell (1) into a primary sedimentation and chemical mixing chamber (11), a fine filtration and self-cleaning chamber (12), a clear water buffer sterilization chamber (13), and a water quality testing and discharge chamber (14). A sealing plate (2) is placed at the tail end of a cylindrical carbon steel shell (1), and the sealing plate (2) is connected to the water quality detection and discharge chamber (14); The ultraviolet sterilization unit (5) is located inside the cylindrical carbon steel shell (1) at the position of the clean water buffer sterilization chamber (13); The fine filtration mechanism (6) is located inside the cylindrical carbon steel shell (1), connected to the multi-functional drum mechanism (3), and located at the position of fine filtration and self-cleaning chamber (12).

2. The wastewater treatment equipment for water conservancy construction according to claim 1, characterized in that, The water inlet buffer mechanism (4) includes an arc-shaped shell cavity (41), which is fixedly installed on the top inner wall of the cylindrical carbon steel shell (1) and located inside the primary sedimentation and dosing mixing chamber (11). The water inlet (42) is connected to the arc-shaped shell cavity (41). A discharge hole (411) is provided at the bottom of the arc-shaped shell cavity (41). Two support blocks (442) are fixedly installed at the bottom of the arc-shaped shell cavity (41). The same flip cover (44) is rotatably installed between the two support blocks (442) through a shaft pin. A sealing plug (443) is fixedly installed on the top of the flip cover (44). The sealing plug (443) is sealed and fitted with the discharge hole (411).

3. The wastewater treatment equipment for water conservancy construction according to claim 2, characterized in that, A torsion spring is provided between the flip cover (44) and the support block (442). A second permanent magnet (441) is fixedly installed on the inner side of the flip cover (44). A first permanent magnet (412) is fixedly installed at the bottom of the arc-shaped cavity (41). The second permanent magnet (441) attracts the first permanent magnet (412).

4. The wastewater treatment equipment for water conservancy construction according to claim 1, characterized in that, The dosing unit includes a dosing tube (43), the inner end of which is connected to the arc-shaped cavity (41), the outer end of which is connected to a drug storage box (432), and a second solenoid valve (431) is provided on the dosing tube (43).

5. The wastewater treatment equipment for water conservancy construction according to claim 1, characterized in that, The multifunctional drum mechanism (3) includes three first drum plates (32) and a rotating shaft (37). The rotating shaft (37) is rotatably installed inside a cylindrical carbon steel shell (1). The three first drum plates (32) are all fixedly installed inside the cylindrical carbon steel shell (1). The rotating shaft (37) is rotatably connected to the three first drum plates (32). Each of the three first drum plates (32) has a first connecting hole (321). A third permanent magnet is embedded in the outer side of each of the three first connecting holes (321). A first drum disc (33), a second drum disc (34), and a third drum disc (35) are fixedly installed on the outer side of the rotating shaft (37). The first drum disc (33), the second drum disc (34), and the third drum disc (35) are in contact with the three first drum plates (32). The first drum (33), the second drum (34) and the third drum (35) are respectively provided with a first connecting hole (331), a second connecting hole (341) and a third connecting hole (351). A fourth permanent magnet is provided on the outside of the first connecting hole (331), the second connecting hole (341) and the third connecting hole (351). The three third permanent magnets cooperate with the three first connecting holes (321). The included angle between the first connecting hole (331), the second connecting hole (341) and the third connecting hole (351) is 90 degrees in sequence. Four water flow impact plates (31) are fixedly installed on the outside of the rotating shaft (37). The included angle between the four water flow impact plates (31) is 90 degrees in sequence. The four water flow impact plates (31) are all located below the discharge hole (411).

6. The wastewater treatment equipment for water conservancy construction according to claim 1, characterized in that, The ultraviolet sterilization unit (5) includes an ultraviolet waterproof lamp (51), which is fixedly installed on the inner wall of the cylindrical carbon steel shell (1) and located inside the clean water buffer sterilization chamber (13). A controller (52) is connected to the ultraviolet waterproof lamp (51), and the controller (52) is located on the outside of the cylindrical carbon steel shell (1).

7. The wastewater treatment equipment for water conservancy construction according to claim 1, characterized in that, The fine filtration mechanism (6) includes a metal ring (61), which is fixedly installed on the inner wall of the cylindrical carbon steel shell (1) and located inside the fine filtration and self-cleaning chamber (12). A rigid support mesh (63) and a shape memory alloy wire mesh (62) are fixedly installed on the inner side of the metal ring (61). Two protective tubes (65) are fixedly installed on the metal ring (61). Pressure sensing diaphragms (66) are fixedly installed at the bottom ends of the two protective tubes (65). The two pressure sensing diaphragms (66) are located on the front and rear sides of the shape memory alloy wire mesh (62), respectively. The same pressure controller (64) is connected to the two pressure sensing diaphragms (66). The pressure controller (64) is located on the outer side of the cylindrical carbon steel shell (1). A heating wire (621) is provided on the inner side of the shape memory alloy wire mesh (62). The heating wire (621) is connected to the pressure controller (64).

8. A wastewater treatment device for water conservancy construction according to claim 5, characterized in that, Four flexible scraper arrays (36) are fixedly installed on the outer side of the rotating shaft (37), and all four flexible scraper arrays (36) are in contact with the outer side of the rigid support net (63).

9. A wastewater treatment device for water conservancy construction according to claim 5, characterized in that, A detector (21) is provided on the outside of the sealing plate (2), and a detection head (211) is provided on the detector (21). The detection head (211) is located inside the water quality detection and discharge chamber (14). A clean water outlet (22) is connected to the bottom side of the sealing plate (2). A first solenoid valve (221) is provided on the clean water outlet (22). An electromagnetic clutch power mechanism (23) is provided on the outside of the sealing plate (2). The electromagnetic clutch power mechanism (23) includes an electromagnetic clutch and a motor. The rotating shaft (37) is connected to the motor through the electromagnetic clutch.

10. A wastewater treatment device for water conservancy construction according to claim 1, characterized in that, The cylindrical carbon steel shell (1) has four discharge pipes (102) on its bottom side. The four discharge pipes (102) are respectively connected to the primary sedimentation and chemical mixing chamber (11), the fine filtration and self-cleaning chamber (12), the clear water buffer sterilization chamber (13), and the water quality detection and discharge chamber (14).

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