Intelligent dosing and mixing device for reuse of reclaimed water

Abstract

The invention relates to the technical field of sewage treatment, and discloses an intelligent dosing and mixing device for reclaimed water reuse, which comprises a machine body, an intelligent dosing unit and a vortex shear mixing unit, a high-frequency micro metering pump and a communicating pipe are fixedly mounted on the machine body, the high-frequency micro metering pump is communicated with the communicating pipe, and the intelligent dosing unit is communicated with the vortex shear mixing unit. The machine body is fixedly provided with a reclaimed water storage barrel and a water suction pump, the intelligent dosing unit is arranged on the reclaimed water storage barrel, the intelligent dosing unit comprises a liquid discharge pipe used for realizing real-time mixing of water and a medicament, and the vortex shear mixing unit is arranged in the machine body. The rotating direction of the blades of the electric inner impeller is opposite to the rotating direction of the blades of the fixed outer impeller, mechanical shearing and tearing effects are generated on water flow and medicament micelles which are converted into rotational flow through the blades of the fixed outer impeller, forced mixing is achieved, the chemical reaction efficiency of medicaments and impurities in sewage is improved, a three-stage mixing mechanism is adopted, and the sewage treatment efficiency is improved. Instantaneous and uniform diffusion of the medicament is ensured, and sedimentation is prevented.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to an intelligent dosing and mixing device for reclaimed water reuse. Background Technology

[0002] Reclaimed water reuse refers to the technology of treating domestic sewage, industrial wastewater, or urban sewage to meet certain water quality standards and then reusing it within a certain range. Because its water quality is between that of tap water and sewage, it is called "reclaimed water". In the reclaimed water reuse process (such as supplementing landscape water, industrial cooling water, greening irrigation, etc.), it is often necessary to add chemical agents for multi-stage treatment (such as flocculants, disinfectants, scale inhibitors, pH adjusters, etc.) to further remove pollutants, sterilize, or stabilize water quality.

[0003] However, most existing technologies add chemical agents based on simple flow ratios and use traditional mechanical stirring or pipeline mixing methods. Since the dosing unit and the mixing unit are usually independent devices, the coordination is poor, the control is lagging, and the agent comes into contact with the water instantly. It is difficult to accurately control the mixing intensity and time, resulting in incomplete reaction and the formation of flocs of varying sizes and uneven distribution. Furthermore, it is difficult to separate the reacted flocs from the treated water in real time. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an intelligent dosing and mixing device for recycled water, which solves the problems mentioned in the background section of the prior art, such as the instantaneous contact between the reagent and water, the difficulty in accurately controlling the mixing intensity and time, resulting in incomplete reaction, and the difficulty in separating the reacted flocs from the treated water in real time.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A smart dosing and mixing device for recycled water includes: a body, on which a high-frequency micro metering pump and a connecting pipe are fixedly installed, the high-frequency micro metering pump being connected to the connecting pipe, and a recycled water storage tank and a water pump being fixedly installed on the body. An intelligent dosing unit is installed on a greywater storage tank, and the intelligent dosing unit includes a discharge pipe for real-time mixing of water and chemicals; A vortex shear mixing unit is disposed within a machine body, the vortex shear mixing unit including an electrically powered internal impeller for further mixing water and pharmaceuticals.

[0006] Furthermore, the intelligent dosing unit also includes: A discharge pipe is connected to the greywater storage tank. A conical sleeve is coaxially provided on the outside of the discharge pipe. The conical sleeve is fixedly connected to the greywater storage tank. The end of the high-frequency micro metering pump away from the connecting pipe is connected to a drug inlet pipe. The end of the drug inlet pipe away from the high-frequency micro metering pump is connected to the conical sleeve. Inside the conical sleeve, the opening of the drug inlet pipe is higher than the opening of the discharge pipe. The conical sleeve is coaxially fixedly connected to an annular disperser at the end away from the greywater storage tank. The annular disperser has a connecting hole at the end near the greywater storage tank. The annular disperser is connected to the conical sleeve through the connecting hole. The annular disperser is provided with a sealing baffle and multiple micro-hole jet nozzles.

[0007] Furthermore, the micro-orifice jet nozzles are arranged at a specific angle on the annular diffuser, and multiple micro-orifice jet nozzles are distributed in a circumferential array on the annular diffuser.

[0008] Furthermore, the vortex shear mixing unit also includes: A mixing cylinder is fixedly installed inside the machine body. A servo motor is fixedly installed at the bottom of the machine body. A first bevel gear is coaxially fixedly connected to the output end of the servo motor. A second bevel gear and a third bevel gear are respectively meshed at both ends of the first bevel gear. A rotating shaft is coaxially fixedly connected to the second bevel gear. The end of the rotating shaft away from the second bevel gear is fixedly connected to the electric inner impeller on the same axis. A fixed outer impeller is coaxially provided above the electric inner impeller, and the fixed outer impeller is rotatably connected to the rotating shaft. The third bevel gear is coaxially fixedly connected to a rotating cylinder, which is coaxially sleeved on the rotating shaft. The rotating cylinder is equipped with multiple agitators, which are located below the electric inner impeller.

[0009] Furthermore, a mixing tube section is coaxially fixedly installed at one end of the mixing cylinder near the annular disperser. An ultrasonic generator is fixedly installed on the mixing tube section. The ultrasonic generator is connected to multiple tunable ultrasonic transducers, which are distributed in a circumferential array on the inner wall of the mixing tube section.

[0010] Furthermore, the water pump is connected to an outlet pipe, and the end of the outlet pipe away from the water pump is connected to the bottom of the mixing drum.

[0011] Furthermore, the fixed outer impeller is coaxially provided with a conical tip and a fixing member in the middle. The end of the fixing member away from the fixed outer impeller is fixedly connected to the mixing cylinder. The blades of the fixed outer impeller are twisted guide vanes. The blades of the electric inner impeller rotate in the opposite direction to the blades of the fixed outer impeller. The rotating cylinder has multiple connecting holes. A spiral auger is coaxially fixedly connected to the rotating shaft. The outer side of the spiral auger contacts the inner wall of the rotating cylinder. A rotating ring is coaxially rotatably connected to one end of the rotating cylinder near the electric inner impeller. A discharge pipe is connected to the rotating ring. The discharge pipe is connected to the rotating cylinder through the connecting holes. A filter hole is provided on the part of the discharge pipe near the inner wall of the mixing cylinder.

[0012] Furthermore, the machine body is equipped with a control board, and the medium-water storage tank is equipped with an online ORP instrument. The control board is connected to the ORP instrument, the high-frequency micro metering pump, the solenoid valve, the ultrasonic generator, and the servo motor via electrical signals.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this invention, the blades of the electric inner impeller rotate in opposite directions to the blades of the fixed outer impeller. This creates a mechanical shearing and tearing effect on the water flow and drug microparticles that have been transformed into a swirling flow by the blades of the fixed outer impeller. This achieves forced mixing, improves the chemical reaction efficiency between the drug and impurities in the wastewater, and employs a three-stage mixing mechanism to ensure instantaneous and uniform diffusion of the drug and full reaction between impurities in the wastewater and the drug, thereby increasing the reaction rate.

[0014] 2. In this invention, the mixture of water and reagent after reaction is introduced into the rotating cylinder through the connecting hole on the rotating cylinder. Due to the counter-rotation of the rotating shaft and the rotating cylinder, the auger transports the mixture of water and reagent to the discharge pipe. Under the action of subsequent thrust and gravity, the mixture flows in the discharge pipe and achieves real-time separation of flocculant and water through the filter hole, which facilitates the continuous operation of the device and improves working efficiency.

[0015] 3. This invention uses a conical sleeve, a drug inlet pipe, and a liquid outlet pipe to mix water and drugs in real time. Inside the conical sleeve, the opening of the drug inlet pipe is higher than the opening of the liquid outlet pipe, and the opening of the liquid outlet pipe narrows. The conical sleeve gradually narrows towards the opening. Due to the Venturi effect, negative pressure is drawn in this area, thus forming a high-speed turbulent flow zone with intense water flow, providing an ideal environment for the primary dispersion of the drug. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an intelligent dosing and mixing device for reclaimed water reuse proposed in this invention; Figure 2 This is a schematic diagram of the internal structure of an intelligent dosing and mixing device for wastewater reuse proposed in this invention; Figure 3 This is a schematic diagram of the intelligent dosing unit structure of an intelligent dosing and mixing device for reclaimed water reuse proposed in this invention; Figure 4This is a schematic diagram of the internal structure of the intelligent dosing unit of the intelligent dosing and mixing device for reclaimed water reuse proposed in this invention; Figure 5 for Figure 4 Enlarged diagram of section A in the middle; Figure 6 This is a schematic diagram of the installation structure of the intelligent dosing unit and the vortex shear mixing unit of the intelligent dosing and mixing device for reclaimed water reuse proposed in this invention; Figure 7 This is a schematic diagram of the working structure of the vortex shear mixing unit of the intelligent dosing and mixing device for reclaimed water reuse proposed in this invention; Figure 8 This is a schematic diagram of the internal structure of the vortex shear mixing unit of an intelligent dosing and mixing device for wastewater reuse proposed in this invention.

[0017] Explanation of the labels in the diagram: 1. Main body; 11. High-frequency micro metering pump; 12. Connecting pipe; 13. Greywater storage tank; 14. Water pump; 141. Water outlet pipe; 2. Intelligent dosing unit; 21. Discharge pipe; 22. Conical sleeve; 23. Inlet pipe; 24. Annular disperser; 241. Connecting hole; 242. Sealing baffle; 243. Micro-jet nozzle; 3. Ultrasonic generator; 31. Tunable frequency ultrasonic transducer; 4. Vortex shear mixing unit; 41. Mixing cylinder; 42. Servo motor; 421. First bevel gear; 43. Second bevel gear; 431. Rotating shaft; 432. Electric inner impeller; 433. Spiral auger; 44. Third bevel gear; 441. Rotating cylinder; 4411. Connecting hole; 442. Agitator; 45. Fixed outer impeller; 46. Rotating ring; 47. Discharge pipe; 471. Filter hole. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1 to 8 This embodiment provides an intelligent dosing and mixing device for recycled water, which includes a body 1, an intelligent dosing unit 2 and a vortex shear mixing unit 4. A high-frequency micro metering pump 11 and a connecting pipe 12 are fixedly installed on the body 1. The high-frequency micro metering pump 11 is connected to the connecting pipe 12. A recycled water storage tank 13 and a water pump 14 are fixedly installed on the body 1.

[0020] The main body 1 is equipped with a control board, and the medium water storage tank 13 is equipped with an online ORP instrument. The control board is electrically connected to the ORP instrument, the high-frequency micro metering pump 11, the solenoid valve, the ultrasonic generator 3 and the servo motor 42 respectively.

[0021] Usage process: By installing an online ORP meter in the greywater storage tank 13, the water quality ORP parameter is detected in real time according to the online ORP meter. If the ORP parameter is higher than the set value, the high-frequency micro metering pump 11 is automatically started to add the agent. When the ORP parameter drops to the set value, it is automatically stopped. The control system calculates the required agent type and dosage based on the real-time detected water quality ORP parameter, and instructs the high-frequency micro metering pump 11 to accurately deliver the agent into the conical sleeve 22.

[0022] Please see Figures 3 to 5 The intelligent dosing unit 2 is installed on the greywater storage tank 13. The intelligent dosing unit 2 includes a discharge pipe 21 for realizing real-time mixing of water and chemicals. The intelligent dosing unit 2 also includes a discharge pipe 21 connected to the greywater storage tank 13. A conical sleeve 22 is coaxially provided on the outside of the discharge pipe 21. The conical sleeve 22 is fixedly connected to the greywater storage tank 13. The end of the high-frequency micro metering pump 11 away from the connecting pipe 12 is connected to the inlet pipe 23. The end of the inlet pipe 23 away from the high-frequency micro metering pump 11 is connected to the conical sleeve 22. Inside the conical sleeve 22, the opening of the inlet pipe 23 is higher than the opening of the discharge pipe 21.

[0023] A conical sleeve 22 is coaxially fixedly connected to an annular disperser 24 at the end away from the greywater storage tank 13. The annular disperser 24 has a connecting hole 241 at the end near the greywater storage tank 13. The annular disperser 24 is connected to the conical sleeve 22 through the connecting hole 241. The annular disperser 24 is provided with a sealing baffle 242 and multiple micro-hole jet nozzles 243.

[0024] The micro-orifice jet nozzles 243 are set at a specific angle on the annular diffuser 24, and multiple micro-orifice jet nozzles 243 are distributed in a circumferential array on the annular diffuser 24.

[0025] Beneficial effects: Since the inlet of the inlet pipe 23 inside the conical sleeve 22 is higher than the outlet pipe 21, the outlet of the outlet pipe 21 becomes narrower, and the conical sleeve 22 gradually narrows towards the outlet. Due to the Venturi effect, negative pressure is drawn in this area, thus forming a high-speed turbulent flow zone. The water flow is violently turbulent, providing an ideal environment for the primary dispersion of the agent. Then, the initially mixed agent enters the annular disperser 24 through the connecting hole 241, and is then obliquely ejected into the mixing pipe section in the form of multiple high-speed fine jets through multiple micro-hole jet nozzles 243.

[0026] The mixture of water and chemicals is instantly dispersed by high-speed impact through the micro-jet nozzle 243, ensuring that the chemicals enter the blades of the fixed outer impeller 45 inside the mixing cylinder 41. After the water flow impacts, it spreads along the blade surface, preventing the chemicals or impurities in the wastewater from depositing on the agitator 442. At the same time, the high-speed jet captured by the blade surface is transformed into a stable vortex, which facilitates the mechanical shearing and tearing action of the subsequent vortex shear mixing unit 4, further refining and tearing these chemical clusters.

[0027] Please see Figure 6 A mixing tube section is coaxially fixedly installed at one end of the mixing cylinder 41 near the annular disperser 24. An ultrasonic generator 3 is fixedly installed on the mixing tube section. The ultrasonic generator 3 is connected to multiple tunable ultrasonic transducers 31, which are distributed in a circumferential array on the inner wall of the mixing tube section.

[0028] The effect of this setup is as follows: through the cooperation of the conical sleeve 22, the inlet pipe 23, and the outlet pipe 21, water and chemicals are mixed in real time, providing an ideal environment for the primary dispersion of chemicals. At the same time, the mechanical shearing and tearing action is generated on the water flow and chemical micro-clusters that are transformed into a swirling flow by the fixed outer impeller 45 blades, achieving forced mixing. By controlling the operation of the adjustable frequency ultrasonic transducer 31, the cavitation effect and micro-jet generated by it micro-dispersion and activation of chemical molecular clusters are achieved, promoting chemical reactions and realizing a three-stage mixing mechanism. This ensures that the chemicals diffuse instantaneously and uniformly, and that impurities in the wastewater react fully with the chemicals, preventing sedimentation.

[0029] Please see Figures 6 to 8 The vortex shear mixing unit 4 is disposed inside the body 1. The vortex shear mixing unit 4 includes an electric internal impeller 432 for further mixing water and medicine. The vortex shear mixing unit 4 also includes a mixing cylinder 41 fixedly installed inside the machine body 1. A water outlet pipe 141 is connected to the water pump 14. The end of the water outlet pipe 141 away from the water pump 14 is connected to the bottom of the mixing cylinder 41. A servo motor 42 is fixedly installed at the bottom of the machine body 1. A first bevel gear 421 is coaxially fixedly connected to the output end of the servo motor 42. A second bevel gear 43 and a third bevel gear 44 are respectively meshed at both ends of the first bevel gear 421. A rotating shaft 431 is coaxially fixedly connected to the second bevel gear 43.

[0030] One end of the rotating shaft 431 away from the second bevel gear 43 is coaxially and fixedly connected to the electric inner impeller 432. A fixed outer impeller 45 is coaxially provided above the electric inner impeller 432, and the fixed outer impeller 45 is rotatably connected to the rotating shaft 431.

[0031] The third bevel gear 44 is coaxially fixedly connected to the rotating cylinder 441, which is coaxially sleeved on the rotating shaft 431. Multiple agitators 442 are provided on the rotating cylinder 441, and the multiple agitators 442 are located below the electric inner impeller 432.

[0032] The fixed outer impeller 45 is coaxially provided with a conical tip and a fixing member in the middle. The end of the fixing member away from the fixed outer impeller 45 is fixedly connected to the mixing cylinder 41. The blades of the fixed outer impeller 45 are twisted guide vanes. The blades of the electric inner impeller 432 rotate in the opposite direction to the blades of the fixed outer impeller 45. The rotating cylinder 441 has multiple connecting holes 4411. A spiral auger 433 is coaxially fixedly connected to the rotating shaft 431. The outer side of the spiral auger 433 is in contact with the inner wall of the rotating cylinder 441. A rotating ring 46 is coaxially rotatably connected to one end of the rotating cylinder 441 near the electric inner impeller 432. A discharge pipe 47 is connected to the rotating ring 46. The discharge pipe 47 is connected to the rotating cylinder 441 through the connecting holes 4411. A filter hole 471 is provided on the part of the discharge pipe 47 near the inner wall of the mixing cylinder 41.

[0033] Usage process: The mixture of the agent and water after primary dispersion enters the vortex shear mixing unit 4. First, the fixed outer impeller 45 generates a stable vortex. Multiple micro-hole jet nozzles 243 are set at a specific angle on the annular disperser 24, obliquely downstream of the water flow, forming multiple high-speed, dispersed jets that impact the blades of the fixed outer impeller 45. After the water flow impacts, it spreads along the blade surface, is captured by the blade surface, and is efficiently converted into rotational kinetic energy, forming a stable initial vortex.

[0034] Subsequently, the electric inner impeller 432 rotates in the opposite direction at a controllable speed, forming a strong velocity shear layer and axial vortex between the fixed outer impeller 45 and the electric inner impeller 432, as well as downstream of the electric inner impeller 432. This generates mechanical shearing and tearing action on the water flow and drug micro-clusters that have been transformed into swirling flow by the blades of the fixed outer impeller 45, further refining and tearing these drug clusters, achieving forced mixing, and improving the mixing efficiency of the drug and water.

[0035] At the same time, when the output end of the servo motor 42 drives the first bevel gear 421 to rotate, the second bevel gear 43 and the third bevel gear 44 rotate in opposite directions, thereby causing the electric inner impeller 432 and the stirrer 442 to rotate in opposite directions. In this way, when the flow rate of the water and chemical mixture to be processed is large, the stirrer 442 is ensured to increase the stirring efficiency, while improving the working efficiency of the servo motor 42.

[0036] Meanwhile, the mixture of water and reagent after reaction is introduced into the rotating cylinder 441 through the connecting hole 4411. Due to the counter-rotation of the rotating shaft 431 and the rotating cylinder 441, the auger 433 transports the mixture of water and reagent to the discharge pipe 47. Under the action of subsequent thrust and gravity, the mixture flows in the discharge pipe 47 and achieves real-time separation of flocculant and water through the filter hole 471, which facilitates the continuous operation of the device and improves working efficiency.

[0037] As can be seen from the above, the working principle of this application is as follows: By installing an online ORP meter in the greywater storage tank 13, the water quality ORP parameter is detected in real time according to the online ORP meter. If the ORP parameter is higher than the set value, the high-frequency micro metering pump 11 is automatically started to add the agent. The ORP parameter is automatically stopped after it drops to the set value. The control system calculates the required type and dosage of the agent based on the real-time detection of the water quality ORP parameters, and instructs the high-frequency micro metering pump 11 to accurately deliver the agent into the conical sleeve 22. Inside the conical sleeve 22, the opening of the inlet pipe 23 is higher than the opening of the outlet pipe 21, and the opening of the outlet pipe 21 narrows. At this point, the conical sleeve 22 gradually narrows towards the opening. Due to the Venturi effect, negative pressure is drawn in this area, thus forming a high-speed turbulent flow zone with intense water flow, providing an ideal environment for the primary dispersion of the agent. Then, the initially mixed agent enters the annular disperser 24 through the connecting hole 241, and is subsequently ejected obliquely into the mixing pipe section in the form of multiple high-speed fine jets through multiple micro-hole jet nozzles 243.

[0038] The mixture of reagent and water after primary dispersion enters the vortex shear mixing unit 4. First, the fixed outer impeller 45 generates a stable vortex. Multiple micro-orifice jet nozzles 243 are set at a specific angle on the annular disperser 24, obliquely downstream of the water flow, forming multiple high-speed, dispersed jets that impact the blades of the fixed outer impeller 45. After the water flow impacts, it spreads along the blade surface, is captured by the blade surface, and is efficiently converted into rotational kinetic energy, forming a stable initial vortex.

[0039] The electric inner impeller 432 rotates in the opposite direction at a controllable speed, forming a strong velocity shear layer and axial vortex between the fixed outer impeller 45 and the electric inner impeller 432 and downstream of the electric inner impeller 432. This generates mechanical shearing and tearing action on the water flow and drug micro-clusters that have been transformed into swirling flow by the blades of the fixed outer impeller 45, further refining and tearing these drug clusters.

[0040] Meanwhile, the ultrasonic generator 3 drives multiple tunable ultrasonic transducers 31 to work. The cavitation effect and micro-jet generated by the transducer disperse and activate the drug molecules in three stages, promoting the chemical reaction. The control board calculates the dosage of the drug based on the influent water quality and quantity signals, and simultaneously generates speed control commands for the electric inner impeller 432 and frequency control commands for the tunable ultrasonic transducers 31. Finally, the treated water in the mixing drum 41 is transported to the subsequent process unit through the water pump 14 and the outlet pipe 141.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A smart dosing and mixing device for recycled water, characterized in that, include: The machine body (1) is fixedly installed with a high-frequency micro metering pump (11) and a connecting pipe (12). The high-frequency micro metering pump (11) is connected to the connecting pipe (12). The machine body (1) is fixedly installed with a medium water storage tank (13) and a water pump (14). Intelligent dosing unit (2), which is installed on the water storage tank (13), includes a discharge pipe (21) for real-time mixing of water and chemicals. A vortex shear mixing unit (4) is disposed inside the body (1) and includes an electric internal impeller (432) for further mixing water and pharmaceuticals.

2. The intelligent dosing and mixing device for recycled water according to claim 1, characterized in that, The intelligent dosing unit (2) also includes: A discharge pipe (21) is connected to the water storage tank (13). A conical sleeve (22) is coaxially provided on the outside of the discharge pipe (21). The conical sleeve (22) is fixedly connected to the water storage tank (13). The end of the high-frequency micro metering pump (11) away from the connecting pipe (12) is connected to a drug inlet pipe (23). The end of the drug inlet pipe (23) away from the high-frequency micro metering pump (11) is connected to the conical sleeve (22). The opening of the drug inlet pipe (23) inside the conical sleeve (22) is higher than the opening of the discharge pipe (21). The conical sleeve (22) is coaxially fixedly connected to an annular disperser (24) at the end away from the water storage tank (13). The annular disperser (24) has a connecting hole (241) at the end near the water storage tank (13). The annular disperser (24) is connected to the conical sleeve (22) through the connecting hole (241). The annular disperser (24) is provided with a sealing baffle (242) and multiple micro-hole jet nozzles (243).

3. The intelligent dosing and mixing device for recycled water according to claim 2, characterized in that, Multiple micro-orifice jet nozzles (243) are arranged in a circumferential array on an annular diffuser (24).

4. The intelligent dosing and mixing device for reclaimed water reuse according to claim 2, characterized in that, The vortex shear mixing unit (4) further includes: A mixing cylinder (41) is fixedly installed inside the machine body (1). A servo motor (42) is fixedly installed at the bottom of the machine body (1). A first bevel gear (421) is coaxially fixedly connected to the output end of the servo motor (42). A second bevel gear (43) and a third bevel gear (44) are respectively meshed at both ends of the first bevel gear (421). A rotating shaft (431) is coaxially fixedly connected to the second bevel gear (43). The end of the rotating shaft (431) away from the second bevel gear (43) is coaxially fixedly connected to the electric inner impeller (432). A fixed outer impeller (45) is coaxially provided above the electric inner impeller (432). The fixed outer impeller (45) is rotatably connected to the rotating shaft (431). The third bevel gear (44) is coaxially fixedly connected to a rotating cylinder (441), which is coaxially sleeved on the rotating shaft (431). The rotating cylinder (441) is provided with multiple stirrers (442), which are located below the electric inner impeller (432).

5. The intelligent dosing and mixing device for recycled water according to claim 4, characterized in that, A mixing tube section is coaxially fixedly installed at one end of the mixing cylinder (41) near the annular disperser (24). An ultrasonic generator (3) is fixedly installed on the mixing tube section. The ultrasonic generator (3) is connected to multiple tunable ultrasonic transducers (31). The multiple tunable ultrasonic transducers (31) are distributed in a circumferential array on the inner wall of the mixing tube section.

6. The intelligent dosing and mixing device for reclaimed water reuse according to claim 4, characterized in that, The water pump (14) is connected to a water outlet pipe (141). The end of the water outlet pipe (141) away from the water pump (14) is connected to the bottom of the mixing cylinder (41). The end of the connecting pipe (12) away from the high-frequency micro metering pump (11) is provided with multiple suction pipes, and each of the multiple suction pipes is provided with a solenoid valve.

7. The intelligent dosing and mixing device for reclaimed water reuse according to claim 4, characterized in that, The fixed outer impeller (45) is coaxially provided with a conical tip and a fixing member in the middle. The end of the fixing member away from the fixed outer impeller (45) is fixedly connected to the mixing cylinder (41). The blades of the fixed outer impeller (45) are twisted guide vanes. The blades of the electric inner impeller (432) rotate in the opposite direction to the blades of the fixed outer impeller (45). The rotating cylinder (441) has multiple connecting holes (4411). A spiral auger (433) is coaxially fixedly connected to the rotating shaft (431). The outer side of the spiral auger (433) is in contact with the inner wall of the rotating cylinder (441). A rotating ring (46) is coaxially rotatably connected to one end of the rotating cylinder (441) near the electric inner impeller (432). A discharge pipe (47) is connected to the rotating ring (46). The discharge pipe (47) is connected to the rotating cylinder (441) through the connecting holes (4411). A filter hole (471) is provided on the part of the discharge pipe (47) near the inner wall of the mixing cylinder (41).

8. The intelligent dosing and mixing device for reclaimed water reuse according to claim 6, characterized in that, The machine body (1) is equipped with a control board, and the medium water storage tank (13) is equipped with an online ORP instrument. The control board is electrically connected to the ORP instrument, the high-frequency micro metering pump (11), the solenoid valve, the ultrasonic generator (3) and the servo motor (42).

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