Non-point source pollution control device based on clear water network

Abstract

The invention discloses a non-point source pollution control device based on a clean flow water net, and relates to the technical field of pollution control devices, the non-point source pollution control device comprises a tank body, a partition body is arranged in an inner cavity of the tank body, and the partition body divides the inner cavity of the tank body into an air inlet cavity and a stirring cavity from top to bottom; an air inlet is formed in the outer wall of the tank; the stirring mechanism comprises a stirring shaft and a stirring driving part, and the stirring shaft sequentially penetrates through the top wall of the tank body, the air inlet cavity and the partition body and extends into the stirring cavity; the stirring driving part is connected with the stirring shaft; a gas transmission channel is arranged in the stirring shaft; the stirring shaft drives the rotary power input end of the rotary air supply mechanism to rotate, so that the rotary air supply mechanism exhausts air from the air inlet cavity, pressurizes the air and discharges the air into the air conveying channel; the air injection stirring pipe is located in the stirring cavity and fixed to the lower end of the stirring shaft, and an air injection opening communicating with the air conveying channel is formed in the outer wall of the air injection stirring pipe. According to the invention, the mixing efficiency of ozone and pollution liquid can be improved, and linkage control of stirring driving and ozone supply is realized.

Description

Technical Field

[0001] This invention relates to the field of pollution control device technology, and in particular to a non-point source pollution control device based on a clear water network. Background Technology

[0002] Clear water network technology is currently one of the important means of comprehensive watershed pollution control. Existing technologies mainly integrate rural domestic sewage treatment technology, rural solid waste treatment technology, and surface low-pollution water deep treatment technology. They utilize a combination of biological and ecological treatment technologies, incorporating high-performance physical environmental filtration materials and environmental biotechnology, and employing various natural ecological treatment pathways such as wetland ecosystems to comprehensively control watershed pollution. Large-scale engineering demonstrations have already been conducted. Specifically, existing technologies employ a series of techniques, including composite biological ecological filters, artificial wetlands for deep treatment of urban sewage treatment plant effluent to meet discharge standards, enhanced riverbank slope buffering and interception, and high-strength, large-pore ecological slope protection materials. By developing a network connecting rivers, ditches, ponds, canals, and fields, a relatively complete clear water network technology system has been formed.

[0003] However, in practical applications, existing clean water network technologies typically require a combination of physical, chemical, and biological methods to control non-point source pollution. In the combined physical and chemical treatment stage, the conventional process involves first using activated carbon to adsorb pollutants, followed by ozone oxidation. However, existing ozone oxidation devices have significant technical drawbacks: most devices directly introduce ozone into the reaction chamber, resulting in limited gas-liquid contact area and low mass transfer efficiency, thus reducing the oxidation efficiency. To address this, some existing technologies have added stirring devices to improve ozone-pollution mixing, but these devices and the ozone supply system usually operate independently, lacking a linkage mechanism. This independent control mode not only increases the complexity and energy consumption of the equipment but also makes it difficult to precisely match the stirring intensity with the ozone dosage, leading to unstable oxidation effects and failing to fully utilize the synergistic purification efficiency of physical adsorption and chemical oxidation.

[0004] Therefore, how to provide a non-point source pollution control device based on a clean water network that can improve the mixing efficiency of ozone and polluted liquid, and realize the linkage control of stirring drive and ozone supply, so as to improve the integration and treatment efficiency of non-point source pollution control, is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention proposes a non-point source pollution control device based on a clear water network, which aims to solve at least one of the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This invention provides a non-point source pollution control device based on a clear water network, comprising: The tank body has a partition in its inner cavity, which divides the inner cavity of the tank body from top to bottom into an air intake chamber and a stirring chamber; the outer wall of the tank body has an air inlet that can input ozone into the air intake chamber; A stirring mechanism includes a stirring shaft and a stirring drive unit. The lower end of the stirring shaft passes through the top wall of the tank, the air inlet chamber, and the partition body from top to bottom and extends into the stirring chamber. The stirring drive unit is connected to the stirring shaft to drive its rotation. An air supply channel is provided inside the stirring shaft along its axial direction. A rotary air supply mechanism is disposed in the air inlet chamber and has an air intake port communicating with the air inlet chamber and an exhaust port communicating with the air delivery channel; the stirring shaft is driven to the rotary power input end of the rotary air supply mechanism to drive it to rotate, thereby enabling it to draw air from the air inlet chamber and pressurize it to discharge it into the air delivery channel; A jet stirring pipe is located in the stirring chamber and fixed at the lower end of the stirring shaft. The outer wall of the jet stirring pipe is provided with a jet port that communicates with the gas delivery channel.

[0008] In this invention, a non-point source pollution control device based on a clear water network is used. Ozone is introduced into the air intake chamber through the air inlet, and the stirring chamber is used to contain the polluted liquid. A stirring drive unit drives the stirring shaft to rotate, which in turn drives the jet stirring pipe to rotate, thus stirring the polluted liquid in the stirring chamber. Simultaneously, driven by the rotating stirring shaft, a rotating air supply mechanism operates. This mechanism pressurizes the ozone gas in the air intake chamber and discharges it into the gas delivery channel, then sprays it into the polluted liquid through the jet nozzle, achieving gas-liquid stirring and mixing. Ozone is uniformly released in the form of microbubbles through the rotating jet stirring pipe. Combined with the stirring action, this significantly prolongs the residence time and mass transfer path of the bubbles in the water, improving the ozone's solubility and reaction efficiency with pollutants, thereby enhancing the oxidative degradation effect on organic matter and pathogens in non-point source pollution. The rotating air supply mechanism uses the rotation of the stirring shaft as the power input, achieving air extraction and pressurization during rotation, eliminating the need for a separate air supply pump or compressor. Non-point source pollution is typically characterized by dispersion, intermittent nature, and large fluctuations in water quality. The device is highly integrated, responds quickly, and has flexible gas volume adjustment (the gas supply and stirring intensity can be changed synchronously by adjusting the stirring speed), which can adapt well to changes in actual working conditions and achieve effective control of non-point source pollution such as receiving water bodies or initial rainwater.

[0009] As a further improvement to the above technical solution, the rotary air supply mechanism includes a cylinder assembly and a drive block; the cylinder assembly includes a cylinder body, a piston plate, a piston rod, a one-way valve one, and a one-way valve two; The cylinder body is located in the air intake chamber and fixed to the outer peripheral wall of the stirring shaft; a sliding cavity is provided in the cylinder body along the radial direction of the stirring shaft; the piston plate is slidably and sealingly connected to the sliding cavity; the piston rod is located on the side of the piston plate away from the stirring shaft and one end of the piston rod is fixed to the piston plate; the other end of the piston rod movably passes through the outer peripheral wall of the cylinder body and extends into the air intake chamber; The cylinder top surface near the stirring shaft has an air intake port communicating with the air intake chamber; the sliding chamber near the stirring shaft has an exhaust port communicating with the air supply channel; one-way valve one is installed at the air intake port and its allowed flow direction is from the air intake chamber to the sliding chamber; one-way valve two is installed at the exhaust port and its allowed flow direction is from the sliding chamber to the air supply channel. The drive block is fixed to the inner peripheral wall of the air intake chamber and can press against the other end of the piston rod to drive it to move, thereby driving the piston plate to move to compress air.

[0010] The beneficial effects of the above technical solution are as follows: This structure is essentially a piston compressor driven by the rotational power of a stirring shaft, capable of performing a self-priming ozone boosting function. Specifically, the stirring shaft drives the cylinder to rotate, and a drive block fixed to the inner wall of the intake chamber acts as a cam, periodically pushing the piston rod, causing the piston plate to reciprocate within the sliding chamber. Combined with one-way valves one and two, a complete working cycle of "ozone intake—ozone compression—ozone discharge" is achieved. One-way valve one ensures that ozone can only flow from the intake chamber to the sliding chamber, and one-way valve two ensures that compressed ozone can only flow from the sliding chamber to the gas delivery channel, achieving one-way isolation of the gas path. This design prevents high-pressure gas backflow and, when the machine stops, prevents liquid in the stirring chamber or gas in the gas delivery channel from flowing back into the intake chamber. The rotary gas supply mechanism requires no additional motor or pneumatic motor drive, relying entirely on the rotational power of the stirring shaft itself. The drive block and rotating piston rod form a "cam-follower" mechanism, converting rotational motion into compression motion of the piston rod and piston, and utilizing centrifugal force to achieve the resetting of the piston rod and piston. The rotary air supply mechanism is completely built into the air inlet chamber, arranged around the stirring shaft, without increasing the external dimensions of the tank, eliminating the need for complex piping systems such as external air compressors, making the entire device a monolithic module, facilitating installation and transportation in clean water networks and other field environments, achieving a high degree of integration and compactness. The air supply pressure and stirring speed are positively correlated; the higher the stirring shaft speed, the faster the piston reciprocates, the greater the exhaust volume per unit time, and the higher the exhaust pressure. This characteristic naturally matches process requirements: when enhanced stirring is needed to cope with high concentrations of pollution, the system automatically provides more ozone and stronger aeration disturbance, achieving coordinated adjustment of process parameters without the need for a complex external control system. While driving the stirring shaft for mechanical stirring, the rotational kinetic energy of the stirring drive unit is simultaneously used to drive the air supply mechanism, achieving "multi-purpose use of one energy source." This avoids the dual energy consumption of "stirring motor + independent air compressor" in traditional solutions, significantly improving the overall energy efficiency ratio. The rotary air supply mechanism can employ multiple cylinder assemblies evenly distributed along the circumference of the stirring shaft. By increasing the number of cylinders, the air supply volume can be increased without altering the basic structure. The shape of the drive block, such as the cam profile, can be designed with different curved surfaces to adjust the piston's stroke and pressurization characteristics, adapting to different operating conditions.

[0011] As a further improvement to the above technical solution, the cylinder assembly also includes a roller; the roller is mounted on the other end of the piston rod and its axial direction is parallel to the axial direction of the stirring shaft.

[0012] The beneficial effects of the above technical solution are: the rolling contact process between the roller and the drive block is smoother, avoiding the "crawling" or instantaneous jamming that may occur in sliding contact; at the same time, the rolling contact can effectively buffer the rigid impact at the moment of contact between the piston rod and the drive block, reduce mechanical vibration and operating noise, make the device operate more smoothly and quietly, and significantly improve the durability and reliability of the mechanism; it also enables the rotational kinetic energy of the stirring shaft to be converted into the compression work of the piston more efficiently, indirectly improving the overall energy efficiency of the ozone supply system.

[0013] As a further improvement to the above technical solution, the cylinder assembly is in multiple groups; the multiple groups of cylinder assemblies are evenly distributed circumferentially along the stirring shaft.

[0014] The beneficial effects of the above technical solution are as follows: by increasing the number of cylinder components and adopting a circumferentially even distribution, triple optimization is achieved; in terms of performance, the air supply volume is significantly increased, and the continuity and stability of the air supply are improved; in terms of mechanics, inertial forces are self-balancing, and vibration and load are significantly reduced; in terms of engineering, redundancy is enhanced, expansion is flexible, and energy efficiency is improved. This design enables the device to meet the needs of both small-flow fine treatment and large-flow high-efficiency treatment, reflecting the design concept of achieving a performance leap through configuration optimization while maintaining the original structural compactness and transmission simplicity, further enhancing the engineering practicality and market adaptability of this area source pollution control device.

[0015] As a further improvement to the above technical solution, the cylinder bodies of multiple sets of cylinder assemblies are integrally connected to form an annular cylinder body; the annular cylinder body is coaxially sleeved and fixed on the stirring shaft.

[0016] The beneficial effects of the above technical solution are as follows: Multiple independent cylinders are connected into a single ring-shaped component through integral molding. All sliding cavities are integrated within this ring-shaped cylinder, forming a complete structural unit. The ring-shaped cylinder is coaxially fitted and fixed to the stirring shaft, serving as the core carrier of the rotary air supply mechanism and rotating synchronously with the stirring shaft. The positioning and fixing of multiple sets of cylinders is simplified from "installing multiple independent components separately" to "installing a single ring-shaped component at once," reducing alignment and adjustment processes in the assembly process and simplifying the assembly relationship. The integrally molded ring-shaped cylinder has high structural rigidity, and its inner hole mates with the stirring shaft, ensuring the radial positional accuracy and circumferential angular accuracy of each set of cylinders relative to the stirring shaft axis, significantly enhancing structural rigidity and ensuring coaxiality and operational accuracy.

[0017] As a further improvement to the above technical solution, there are multiple drive blocks, and their number is the same as the number of cylinder assemblies. The multiple drive blocks are evenly distributed along the inner peripheral wall of the air intake chamber.

[0018] The beneficial effects of the above technical solution are as follows: the number of drive blocks is the same as the number of cylinder groups and they are evenly distributed circumferentially, which is equivalent to setting multiple cam working surfaces on the fixed inner wall of the intake chamber. These, together with the multiple sets of piston rod rollers on the rotating annular cylinder, form multiple parallel cam mechanisms, creating a "multi-cam-multi-follower" drive system. The evenly distributed circumferential drive blocks ensure that the radial reaction forces generated when the pistons of each cylinder are compressed during the rotation of the annular cylinder are evenly distributed circumferentially, canceling each other out. Simultaneously, the instantaneous impact forces generated by the contact between each piston rod and the drive block are also symmetrically distributed, significantly reducing the alternating radial load on the stirring bearing and improving the dynamic balance performance of the rotating system.

[0019] As a further improvement to the above technical solution, the jet stirring tube is fixed to the lower end of the stirring shaft and communicates with the gas supply channel, and the jet stirring tube extends radially along the stirring shaft; the outer peripheral wall of the jet stirring tube is provided with a plurality of jet ports communicating with its cavity, and the plurality of jet ports are arranged at intervals along the length direction of the jet stirring tube.

[0020] The beneficial effects of the above technical solution are as follows: When the stirring shaft rotates, the jet stirring pipe rotates synchronously with it, causing multiple jet nozzles arranged at intervals along the length of its outer circumference to perform circular motion in the stirring chamber, achieving rotary multi-point aeration. The cavity of the jet stirring pipe is directly connected to the gas delivery channel inside the stirring shaft, allowing pressurized ozone to be delivered to each jet nozzle for release through the cavity; simultaneously, the jet stirring pipe itself acts as a stirring component, generating shearing and propulsion effects on the water during rotation, achieving multi-functional integration of "stirring shaft-gas delivery channel-jet pipe-stirring blades". The multiple jet nozzles are arranged at intervals along the length of the jet stirring pipe, allowing ozone gas to be released simultaneously from multiple points, avoiding the problems of bubble concentration and local oversaturation that occur with single-point release. Combined with the rotational motion, the bubbles are uniformly dispersed radially and circumferentially within the tank, significantly expanding the coverage area of ​​gas-liquid contact.

[0021] As a further improvement to the above technical solution, the stirring mechanism further includes a stirring paddle; the stirring paddle is located in the stirring chamber and fixed to the outer peripheral wall of the stirring shaft, and is located above the jet stirring pipe.

[0022] The beneficial effects of the above technical solution are as follows: A double-layered mixing structure is constructed, with the mixing paddle located in the upper part of the mixing chamber and the jet mixing pipe in the lower part. Both rotate synchronously with the mixing shaft, forming a "paddle above pipe" double-layered mixing system, achieving mechanical disturbance of the entire water layer in the mixing chamber. The ozone bubbles released by the jet mixing pipe move upwards under buoyancy. When passing through the area where the mixing paddle is located, they are further broken down and refined by the shearing, cutting, and turbulent diffusion effects of the paddle blades, resulting in secondary mixing of the gas and liquid phases and enhancing the gas-liquid mixing and dispersion. The rotation of the mixing paddle generates axial flow (downward or upward, depending on the paddle type) and radial flow, which couple with the bottom disturbance flow field generated by the jet mixing pipe to form a three-dimensional circulating flow field, promoting water exchange throughout the tank.

[0023] As a further improvement to the above technical solution, a filtration assembly is also included, which includes a filter box and a filter plate, and an inlet is provided on the outer peripheral wall of the tank corresponding to the top of the stirring chamber; The outlet of the filter box is connected to the inlet; the filter plate is detachably connected in the inner cavity of the filter box and corresponds to the inlet and outlet of the filter box.

[0024] The beneficial effects of the above technical solution are as follows: Non-point source polluted water bodies (such as initial rainwater, agricultural runoff, and surface runoff) often contain coarse impurities such as leaves, weeds, plastic fragments, sand, and large suspended particles. The filter assembly is installed before the inlet, allowing the non-point source polluted water to be intercepted by the filter plate before entering the mixing chamber, removing coarse impurities. The filter plate is detachably installed inside the filter box, located between the inlet and outlet, facilitating periodic removal for cleaning or replacement to restore filtration function. Pre-filtration reduces the amount of large particles entering the tank, preventing blockage, wear, or interference with core components such as the mixing mechanism, jet mixing pipe, and rotary air supply mechanism.

[0025] As a further improvement to the above technical solution, the filter box is fixedly connected to the outer peripheral wall of the tank and its outlet is correspondingly connected to the inlet. The inlet is located on the side wall of the filter box away from the tank. The top surface of the filter box is provided with an insertion through hole. The lower part of the filter plate can pass through the insertion through hole and be detachably installed in the filter box. The upper part of the filter plate can block the insertion through hole.

[0026] The beneficial effects of the above technical solution are as follows: the filter box is fixed to the outer peripheral wall of the tank, and the outlet directly corresponds to the inlet, making the filter assembly and the tank an integrated structure without the need for external piping. An insertion through-hole is provided in the middle of the top surface of the filter box. The lower part of the filter plate passes through this through-hole and is inserted into the inner cavity of the filter box, while the upper part seals the insertion through-hole, enabling vertical insertion and removal of the filter plate. After the filter plate is inserted into place, the upper part can seal the insertion through-hole, forming a sealed structure to prevent top overflow or leakage, while eliminating the need for additional sealing covers or fasteners. This design fully embodies the "maintenance-oriented design" concept, ensuring the effectiveness of the filtration function while prioritizing the convenience of operation and maintenance, thus improving the structural compactness and ease of maintenance of the device. As can be seen from the above technical solution, compared with the prior art, this invention discloses a non-point source pollution control device based on a clean water network, which has the following advantages and beneficial effects.

[0027] 1. The device of this invention integrates power and gas supply; by using the stirring shaft as both the gas delivery channel and the power source for the rotating gas supply mechanism, it achieves a deep integration of ozone generation, pressurization, dispersion, and stirring functions. Its core innovation lies in using mechanical rotation to simultaneously complete gas pressurization and gas-liquid mixing, which simplifies the system structure, reduces energy consumption and maintenance difficulty, while improving treatment efficiency. It is a highly efficient and integrated control device for non-point source pollution control.

[0028] 2. The device of the present invention achieves mechanical self-balancing through the even distribution of multiple cylinders; it adopts multiple sets of cylinders evenly distributed around the circumference and integrated into an annular cylinder body, and with matching and evenly distributed drive blocks, so that the radial loads of each cylinder cancel each other out during rotation, which significantly reduces vibration and wear, while realizing high-pressure air supply, improving system reliability and lifespan.

[0029] 3. The device of this invention achieves dual-layer synergistic gas-liquid mixing; a multi-point jet stirring pipe is set at the lower end of the stirring shaft, and a stirring paddle is added above, forming a dual-layer structure of "bottom aeration + upper layer shearing". The rising bubbles are broken and refined a second time by the stirring paddle, combined with the three-dimensional circulating flow field of the entire water layer, which greatly improves the ozone mass transfer efficiency and mixing uniformity.

[0030] 4. The device of this invention has front-end protection and is easy to maintain. The filter box is set close to the tank body and the filter assembly is vertically inserted at the top, which effectively intercepts large debris and prevents the air jet and stirring mechanism from being blocked; the filter plate can be pulled out directly upwards for cleaning without disassembling the pipeline, which significantly reduces the difficulty of operation and maintenance and downtime. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0032] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a non-point source pollution control device based on a clear water network according to the present invention.

[0033] Figure 2 This is an axial cross-sectional view of the overall structure of a non-point source pollution control device based on a clear water network according to the present invention.

[0034] Figure 3 This is a radial cross-sectional view of the air intake chamber of a non-point source pollution control device based on a clear water network according to the present invention.

[0035] Figure 4 This is a schematic diagram of the agitator and jet agitator pipe of a non-point source pollution control device based on a clear water network according to the present invention.

[0036] In the diagram: 1. Tank body; 11. Divider; 12. Air inlet chamber; 13. Stirring chamber; 14. Air inlet; 15. Liquid inlet; 17. Drain outlet; 18. Support column; 2. Stirring mechanism; 21. Stirring shaft; 211. Air supply channel; 22. Stirring drive unit; 23. Stirring paddle; 3. Rotary air supply mechanism; 31. Cylinder; 311. Sliding chamber; 3111. Exhaust port; 312. Suction port; 32. Piston plate; 33. Piston rod; 34. Drive block; 35. One-way valve one; 36. One-way valve two; 37. Roller; 4. Jet stirring pipe; 41. Jet nozzle; 5. Filter assembly; 51. Filter box; 511. Insert through hole; 512. Threaded hole; 513. Water outlet; 514. Water inlet; 52. Filter plate; 521. Limiting groove; 53. Positioning bolt. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0038] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," 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 communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] According to embodiments of the present invention, such as Figures 1 to 4 As shown, a non-point source pollution control device based on a clean water network includes: a tank 1, a stirring mechanism 2, a rotary air supply mechanism 3, and a jet stirring pipe 4.

[0042] The inner cavity of the tank body 1 is provided with a partition 11, which divides the inner cavity of the tank body 1 from top to bottom to form an air inlet chamber 12 and a stirring chamber 13; the outer wall of the tank body 1 is provided with an air inlet 14 that can input ozone into the air inlet chamber 12. The stirring mechanism 2 includes a stirring shaft 21 and a stirring drive unit 22. The lower end of the stirring shaft 21 passes through the top wall of the tank 1, the air inlet chamber 12 and the partition 11 from top to bottom and extends into the stirring chamber 13. The stirring drive unit 22 is connected to the stirring shaft 21 to drive it to rotate. An air supply channel 211 is provided in the stirring shaft 21 along its axial direction. The rotary air supply mechanism 3 is disposed in the air inlet chamber 12 and has an air intake port 312 communicating with the air inlet chamber 12 and an exhaust port 3111 communicating with the air delivery channel 211; the stirring shaft 21 is driven to the rotary power input end of the rotary air supply mechanism 3 to drive it to rotate, thereby enabling it to draw air from the air inlet chamber 12 and pressurize it to discharge it into the air delivery channel 211. The jet stirring pipe 4 is located in the stirring chamber 13 and fixed to the lower end of the stirring shaft 21. The outer wall of the jet stirring pipe 4 is provided with a jet port 41 that connects to the gas delivery channel 211.

[0043] In this embodiment, a non-point source pollution control device based on a clean water network is used. Ozone is introduced into the air intake chamber 12 through the air inlet 14, and the stirring chamber 13 is used to contain the polluted liquid. The stirring drive unit 22 drives the stirring shaft 21 to rotate, which in turn drives the jet stirring pipe 4 to rotate to stir the polluted liquid in the stirring chamber 13. At the same time, driven by the rotating stirring shaft 21, the rotating gas supply mechanism 3 rotates. The function of the rotating gas supply mechanism 3 is to pressurize the ozone gas in the air intake chamber 12 and discharge it into the gas delivery channel 211, and then spray ozone gas into the polluted liquid through the jet nozzle 41 to achieve gas-liquid stirring and mixing. Ozone is uniformly released in the form of microbubbles through the rotating jet stirring pipe. Combined with the stirring action, the residence time and mass transfer path of the bubbles in the water are significantly extended, improving the ozone solubility and reaction efficiency with pollutants, thereby enhancing the oxidation and degradation effect of organic matter, pathogens, etc. in non-point source pollution. The rotating gas supply mechanism uses the rotation of the stirring shaft as the power input, and realizes air extraction and pressurization during the rotation process, without the need for an additional independent gas supply pump or compressor. Non-point source pollution is typically characterized by its dispersed, intermittent nature and large fluctuations in water quality. This device features a high degree of integration, rapid response, and flexible gas volume adjustment. By adjusting the stirring speed, the gas supply and stirring intensity can be changed synchronously, enabling it to adapt well to changes in actual operating conditions and achieve effective control of non-point source pollution such as receiving water bodies or initial rainwater runoff.

[0044] Specifically, the bottom of the tank 1 has a drain outlet 17 that connects to the bottom of the stirring chamber 13.

[0045] In some embodiments, the rotary air supply mechanism 3 includes a cylinder assembly and a drive block 34; the cylinder assembly includes a cylinder body 31, a piston plate 32, a piston rod 33, a one-way valve 35, and a two-way valve 36. The cylinder body 31 is located in the air intake chamber 12 and is fixed to the outer peripheral wall of the stirring shaft 21; a sliding chamber 311 is provided in the cylinder body 31 along the radial direction of the stirring shaft 21; the piston plate 32 is slidably and sealingly connected in the sliding chamber 311; the piston rod 33 is located on the side of the piston plate 32 away from the stirring shaft 21 and one end of the piston rod is fixed to the piston plate 32; the other end of the piston rod 33 moves through the outer peripheral wall of the cylinder body 31 and extends into the air intake chamber 12. A suction port 312 communicating with the intake chamber 12 is provided on the top surface of the cylinder 31 near the stirring shaft 21; an exhaust port 3111 communicating with the air supply channel 211 is provided on the side wall of the sliding chamber 311 near the stirring shaft 21; a one-way valve 35 is installed at the suction port 312 and its allowed flow direction is from the intake chamber 12 to the sliding chamber 311; a one-way valve 36 is installed at the exhaust port 3111 and its allowed flow direction is from the sliding chamber 311 to the air supply channel 211. The drive block 34 is fixed to the inner peripheral wall of the intake chamber 12 and can press against the other end of the piston rod 33 to drive it to move, thereby driving the piston plate 32 to move to compress air.

[0046] This structure is essentially a piston compressor driven by the rotational power of a stirring shaft, capable of self-priming ozone pressurization. The stirring shaft 21 drives the cylinder 31 to rotate, using a drive block 34 fixed to the inner wall of the intake chamber 12 as a cam to periodically push the piston rod 33, causing the piston plate 32 to reciprocate within the sliding chamber 311. Combined with one-way valves 35 and 36, a complete working cycle of "ozone intake – ozone compression – ozone discharge" is achieved. One-way valve 1 ensures that ozone flows only from the intake chamber 12 to the sliding chamber 311, while one-way valve 2 ensures that compressed ozone flows only from the sliding chamber 311 to the gas delivery channel 211, achieving one-way isolation of the gas path. This design prevents high-pressure gas backflow and, when the machine stops, prevents liquid in the stirring chamber 13 or gas in the gas delivery channel from flowing back into the intake chamber. The rotary gas supply mechanism 3 requires no additional motor or pneumatic motor drive, relying entirely on the rotational power of the stirring shaft 21 itself. The drive block 34 and the rotating piston rod 33 form a "cam-follower" mechanism, converting the rotational motion into the compression motion of the piston rod and piston, and using the centrifugal force of rotation to achieve the reset of the piston rod and piston. The rotary air supply mechanism is completely built into the air inlet chamber 12 and arranged around the stirring shaft 21, without increasing the external dimensions of the tank 1, eliminating the need for complex piping systems such as external air compressors, making the entire device an integrated module, which is convenient for installation and transportation in clean water networks and other field environments, achieving a high degree of integration and compactness. The air supply pressure and stirring speed are positively correlated. The higher the speed of the stirring shaft 21, the faster the frequency of piston reciprocating motion, the greater the exhaust volume per unit time, and the higher the exhaust pressure. This characteristic naturally matches the process requirements: when it is necessary to strengthen stirring to deal with high concentrations of pollution, the system automatically provides more ozone and stronger aeration disturbance, realizing the coordinated adjustment of process parameters without the need for a complex external control system. While driving the stirring shaft 21 for mechanical stirring, the rotational kinetic energy of the stirring drive unit 22 is simultaneously used to drive the air supply mechanism, achieving "multi-purpose use of one energy source." This avoids the dual energy consumption of "stirring motor + independent air compressor" in traditional solutions, significantly improving the overall energy efficiency ratio. The rotary air supply mechanism can employ multiple cylinder assemblies evenly distributed along the circumference of the stirring shaft, for example, 2-4 sets. Increasing the number of cylinders increases the air supply without altering the basic structure. The shape of the drive block 34, such as the cam profile, can be designed with different curved surfaces to adjust the piston's stroke and pressurization characteristics, adapting to different operating conditions.

[0047] Specifically, the stirring drive unit 22 can be a motor, which is installed at the top of the tank 1 and its shaft is coaxially connected to the upper end of the stirring shaft 21.

[0048] In some embodiments, the cylinder assembly further includes a roller 37; the roller 37 is mounted at the other end of the piston rod 33 and its axial direction is parallel to that of the stirring shaft 21.

[0049] The rolling contact process between the roller 37 and the drive block 34 is smoother, avoiding the "crawling" or instantaneous jamming that may occur in sliding contact. At the same time, the rolling contact can effectively buffer the rigid impact at the moment of contact between the piston rod and the drive block, reduce mechanical vibration and operating noise, make the device run more smoothly and quietly, and significantly improve the durability and reliability of the mechanism. It also allows the rotational kinetic energy of the stirring shaft 21 to be converted into the compression work of the piston more efficiently, indirectly improving the overall energy efficiency of the ozone supply system.

[0050] Specifically, when the piston rod 33 moves to its limit position away from the stirring shaft 21, the roller 37 is just in contact with the inner circumferential wall of the air intake chamber 12. When the piston rod 33 moves to its limit position towards the stirring shaft 21, the piston plate 32 is located on the side of the air extraction port 312 away from the stirring shaft 21.

[0051] It should be noted that when ozone gas is pressurized and input into the air inlet chamber 12 using an external ozone gas delivery device, the ozone gas with a certain pressure can open the one-way valve 35 and the one-way valve 36 and then be discharged sequentially through the sliding chamber 311, the exhaust port 3111, the gas delivery channel 211, and the jet port 41; that is, the static aeration function can also be realized when the stirring shaft 21 is stationary.

[0052] In some embodiments, there are multiple sets of cylinder assemblies; the multiple sets of cylinder assemblies are evenly distributed around the stirring shaft 21.

[0053] By increasing the number of cylinder components and adopting a circumferentially even distribution, triple optimization is achieved. In terms of performance: the air supply volume is significantly increased, and the continuity and stability of the air supply are improved. In terms of mechanics: inertial forces are self-balancing, and vibration and load are significantly reduced. In terms of engineering: redundancy is enhanced, expansion is flexible, and energy efficiency is improved. This design enables the device to meet the needs of both small-flow fine treatment and large-flow high-efficiency treatment, reflecting the design philosophy of achieving a performance leap through configuration optimization while maintaining the original structural compactness and transmission simplicity. This further enhances the engineering practicality and market adaptability of this area source pollution control device.

[0054] In some embodiments, the cylinder bodies 31 of multiple sets of cylinder assemblies are integrally connected to form an annular cylinder body; the annular cylinder body is coaxially sleeved and fixed on the stirring shaft 21.

[0055] Multiple independent cylinders are connected into a single ring-shaped component through integral molding. All sliding cavities 311 are integrated inside this ring-shaped cylinder, forming a complete structural unit. The ring-shaped cylinder is coaxially sleeved and fixed on the stirring shaft 21, serving as the core carrier of the rotary air supply mechanism and rotating synchronously with the stirring shaft. The positioning and fixing of multiple sets of cylinders is simplified from "installing multiple independent components separately" to "installing a single ring-shaped component at once," reducing alignment and adjustment processes in the assembly process and simplifying the assembly relationship. The integrally molded ring-shaped cylinder has high structural rigidity, and its inner hole mates with the stirring shaft 21, ensuring the radial positional accuracy and circumferential angular accuracy of each set of cylinders relative to the stirring shaft axis, significantly enhancing structural rigidity and ensuring coaxiality and operational accuracy.

[0056] Specifically, the stirring shaft 21 has through holes corresponding to multiple exhaust ports 3111, which are connected to the gas delivery channel 211; the multiple through holes are sealed and connected to the corresponding exhaust ports 3111.

[0057] Specifically, the inner circumferential wall of the annular cylinder body is sealed and welded to the outer circumferential wall of the corresponding stirring shaft 21 to achieve sealing while ensuring torque transmission.

[0058] In some embodiments, there are multiple drive blocks 34, and their number is the same as the number of cylinder assemblies. The multiple drive blocks 34 are evenly distributed along the inner peripheral wall of the intake chamber 12.

[0059] The number of drive blocks is the same as the number of cylinder groups and they are evenly distributed circumferentially. This is equivalent to setting multiple cam working surfaces on the inner wall of the fixed air intake chamber 12. Together with the multiple sets of piston rod rollers on the rotating annular cylinder, they form multiple parallel cam mechanisms, creating a "multi-cam-multi-follower" drive system. The even distribution of multiple drive blocks circumferentially ensures that the radial reaction forces generated when the pistons of each cylinder are compressed during the rotation of the annular cylinder are evenly distributed circumferentially and cancel each other out. At the same time, the instantaneous impact forces generated when each piston rod contacts the drive block are also symmetrically distributed, significantly reducing the alternating radial load on the stirring shaft 21 and improving the dynamic balance performance of the rotating system.

[0060] Specifically, the surface of the drive block 34 near the stirring shaft 21 is a streamlined curved surface that smoothly transitions to the inner peripheral wall of the air intake chamber 12, in order to reduce the radial impact of the drive block 34 on the other end of the piston rod 33.

[0061] In some embodiments, the middle part of the jet stirring pipe 4 is fixed to the lower end of the stirring shaft 21 and communicates with the gas supply channel 211. The jet stirring pipe 4 extends radially along the stirring shaft 21. The outer peripheral wall of the jet stirring pipe 4 is provided with a plurality of jet ports 41 communicating with its cavity. The plurality of jet ports 41 are arranged at intervals along the length direction of the jet stirring pipe 4.

[0062] When the stirring shaft rotates, the jet stirring pipe rotates synchronously, causing multiple jet nozzles 41, spaced along the length of its outer circumference, to perform circular motion within the stirring chamber 13, achieving rotary multi-point aeration. The cavity of the jet stirring pipe 4 is directly connected to the gas delivery channel 211 within the stirring shaft 21, allowing pressurized ozone to be delivered through the cavity to each jet nozzle 41 for release. Simultaneously, the jet stirring pipe itself acts as a stirring component, generating shearing and propulsion effects on the water during rotation, achieving multi-functional integration of "stirring shaft - gas delivery channel - jet pipe - stirring blades". The multiple jet nozzles 41 are spaced along the length of the jet stirring pipe, allowing ozone gas to be released simultaneously from multiple points, avoiding the problems of bubble concentration and localized oversaturation that occur with single-point release. Combined with the rotational motion, the bubbles are uniformly dispersed radially and circumferentially within the tank, significantly expanding the coverage area of ​​gas-liquid contact.

[0063] In some embodiments, the stirring mechanism 2 further includes a stirring paddle 23; the stirring paddle 23 is located in the stirring chamber 13 and fixed to the outer peripheral wall of the stirring shaft 21, and is located above the jet stirring pipe 4.

[0064] A double-layer mixing structure was constructed, with the impeller 23 located at the upper part of the mixing chamber 13 and the jet mixing pipe 4 at the lower part. Both rotate synchronously with the mixing shaft 21, forming a double-layer mixing system of "upper impeller, lower pipe" to achieve mechanical disturbance of the entire water layer in the mixing chamber. The ozone bubbles released by the jet mixing pipe 4 move upward under the action of buoyancy. When passing through the area where the impeller 23 is located, they are subjected to shearing, cutting and turbulent diffusion by the impeller blades, and the bubbles are further broken and refined, resulting in secondary mixing of the gas and liquid phases, which enhances the gas-liquid mixing and dispersion. The rotation of the impeller 23 generates axial flow (downward or upward, depending on the impeller type) and radial flow, which couple with the bottom disturbance flow field generated by the jet mixing pipe 4 to form a three-dimensional circulating flow field, promoting the exchange of water throughout the tank.

[0065] Specifically, the length of the jet stirring pipe 4 is greater than the length of the stirring paddle 23. The stirring drive unit 22 can drive the stirring shaft 21 to rotate, which in turn drives the stirring paddle 23 to rotate. The rotation of the stirring paddle 23 generates a downward axial flow, which in turn prolongs the residence time of ozone bubbles in the polluted liquid in the stirring chamber 13, thereby improving the purification effect.

[0066] Specifically, the jet direction of the jet nozzle 41 can be set to either upward or downward.

[0067] In some embodiments, the air inlet 14 can be used as a liquid inlet for adding wastewater treatment agents or solutions to improve wastewater treatment efficiency and applicability of the device.

[0068] In some embodiments, a filter assembly 5 is also included, which includes a filter box 51 and a filter plate 52. An inlet 15 is provided on the outer peripheral wall of the tank body 1 corresponding to the top of the stirring chamber 13. The outlet 513 of the filter box 51 is connected to the inlet 15; the filter plate 52 is detachably connected in the inner cavity of the filter box 51 and corresponds to the inlet 514 and outlet 513 of the filter box 51.

[0069] Non-point source pollution (such as initial rainwater, agricultural runoff, and surface runoff) often contains coarse impurities such as leaves, weeds, plastic fragments, sand, and large suspended particles. The filter assembly is positioned before the inlet, allowing the polluted water to be intercepted by the filter plate 52 before entering the mixing chamber 13, removing coarse impurities. The filter plate 52 is detachably installed inside the filter box 51, located between the inlet and outlet, facilitating periodic removal for cleaning or replacement to restore filtration function. Pre-filtration reduces the amount of large particles entering the tank 1, preventing blockage, wear, or interference with core components such as the mixing mechanism 2, the jet mixing pipe 4, and the rotary air supply mechanism 3.

[0070] In some embodiments, the filter box 51 is fixedly connected to the outer peripheral wall of the tank 1 and its outlet 513 is correspondingly connected to the inlet 15. The inlet 514 is located on the side wall of the filter box 51 away from the tank 1. The top surface of the filter box 51 is provided with an insertion through hole 511. The lower part of the filter plate 52 can pass through the insertion through hole 511 and can be detachably adapted and inserted into the inner cavity of the filter box 51. The upper part of the filter plate 52 can block the insertion through hole 511.

[0071] The filter box 51 is fixedly attached to the outer circumferential wall of the tank 1, with the outlet directly corresponding to the inlet 15, forming an integrated structure between the filter assembly and the tank, eliminating the need for external piping. A insertion through-hole 511 is provided in the center of the top surface of the filter box 51. The lower part of the filter plate 52 passes through this through-hole and is inserted into the inner cavity of the filter box, while the upper part seals the insertion through-hole, enabling vertical insertion and removal of the filter plate. After insertion, the upper part of the filter plate 52 seals the insertion through-hole 511, forming a sealed structure to prevent top overflow or leakage, without requiring additional sealing covers or fasteners. This design fully embodies the "maintenance-oriented design" concept, prioritizing ease of operation and maintenance while ensuring the effectiveness of the filtration function, thus improving the structural compactness and ease of maintenance of the device.

[0072] Specifically, the filter box 51 has a threaded hole 512 on the side wall away from the tank 1 corresponding to the water inlet 514; the threaded hole 512 can connect to the insertion through hole 511; a limiting groove 521 is opened on the upper part of the filter plate 52 corresponding to the threaded hole 512; the positioning bolt 53 is threaded in the threaded hole 512 and one end of it can be embedded in the limiting groove 521 to lock and position the filter plate 52.

[0073] Specifically, a one-way valve can be installed on the tank body 1 at the inlet 15, allowing flow from the filter box 51 to the mixing chamber 13. A drain valve is installed at the bottom of the tank body 1 at the drain outlet 17. When the drain valve is closed, the mixing chamber 13 forms a closed mixing chamber. As ozone gas is continuously injected into the mixing chamber 13 through the jet nozzle 41, the pressure in the mixing chamber 13 increases, which facilitates the dissolution of ozone gas into the polluted liquid within the mixing chamber 13, thereby improving the purification effect.

[0074] Specifically, support column 18 is fixedly installed at the bottom of tank 1.

[0075] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0076] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A non-point source pollution control device based on a clear water network, characterized in that, include: The tank (1) has a partition (11) in its inner cavity, which divides the inner cavity of the tank (1) from top to bottom to form an air inlet chamber (12) and a stirring chamber (13); the outer wall of the tank (1) has an air inlet (14) that can input ozone into the air inlet chamber (12). A stirring mechanism (2) is provided, comprising a stirring shaft (21) and a stirring drive unit (22). The lower end of the stirring shaft (21) passes through the top wall of the tank (1), the air inlet chamber (12), and the partition (11) from top to bottom and extends into the stirring chamber (13). The stirring drive unit (22) is connected to the stirring shaft (21) to drive it to rotate. An air supply channel (211) is provided in the stirring shaft (21) along its axial direction. A rotary air supply mechanism (3) is disposed in the air inlet chamber (12) and has an air intake port (312) communicating with the air inlet chamber (12) and an exhaust port (3111) communicating with the air delivery channel (211); the stirring shaft (21) is driven to the rotary power input end of the rotary air supply mechanism (3) to drive it to rotate, thereby enabling it to draw air from the air inlet chamber (12) and pressurize it to discharge it into the air delivery channel (211); The jet stirring pipe (4) is located in the stirring chamber (13) and fixed at the lower end of the stirring shaft (21). The outer wall of the jet stirring pipe (4) is provided with a jet port (41) that connects to the gas supply channel (211).

2. The non-point source pollution control device based on a clear water network according to claim 1, characterized in that, The rotary air supply mechanism (3) includes a cylinder assembly and a drive block (34); the cylinder assembly includes a cylinder body (31), a piston plate (32), a piston rod (33), a one-way valve (35) and a one-way valve (36); The cylinder (31) is located in the air intake chamber (12) and fixed to the outer peripheral wall of the stirring shaft (21); a sliding chamber (311) is provided in the cylinder (31) radially along the stirring shaft (21); the piston plate (32) is slidably and sealingly connected to the sliding chamber (311); the piston rod (33) is located on the side of the piston plate (32) away from the stirring shaft (21) and one end of the piston rod (33) is fixed to the piston plate (32); the other end of the piston rod (33) moves through the outer peripheral wall of the cylinder (31) and extends into the air intake chamber (12); The cylinder body (31) has an air intake port (312) connected to the air intake chamber (12) on the top surface near the stirring shaft (21); the sliding chamber (311) has an exhaust port (3111) connected to the air supply channel (211) on the side wall near the stirring shaft (21); the first one-way valve (35) is installed at the air intake port (312) and its allowed flow direction is from the air intake chamber (12) to the sliding chamber (311); the second one-way valve (36) is installed at the exhaust port (3111) and its allowed flow direction is from the sliding chamber (311) to the air supply channel (211); The drive block (34) is fixed to the inner peripheral wall of the air intake chamber (12) and can press against the other end of the piston rod (33) to drive it to move, thereby driving the piston plate (32) to move to compress air.

3. The non-point source pollution control device based on a clear water network according to claim 2, characterized in that, The cylinder assembly also includes a roller (37); the roller (37) is mounted on the other end of the piston rod (33) and its axial direction is parallel to that of the stirring shaft (21).

4. The non-point source pollution control device based on a clear water network according to claim 2, characterized in that, The cylinder assembly is in multiple groups; the multiple groups of cylinder assemblies are evenly distributed circumferentially along the stirring shaft (21).

5. The non-point source pollution control device based on a clear water network according to claim 4, characterized in that, The cylinder bodies (31) of the multiple sets of cylinder assemblies are integrally connected to form an annular cylinder body; the annular cylinder body is coaxially sleeved and fixed on the stirring shaft (21).

6. The non-point source pollution control device based on a clear water network according to claim 4, characterized in that, There are multiple drive blocks (34) and their number is the same as the number of cylinder assemblies. The multiple drive blocks (34) are evenly distributed along the inner peripheral wall of the air intake chamber (12).

7. The non-point source pollution control device based on a clear water network according to claim 1, characterized in that, The jet stirring pipe (4) is fixed at the lower end of the stirring shaft (21) and communicates with the gas supply channel (211). The jet stirring pipe (4) extends radially along the stirring shaft (21). The outer peripheral wall of the jet stirring pipe (4) is provided with a plurality of jet ports (41) communicating with its cavity. The plurality of jet ports (41) are arranged at intervals along the length direction of the jet stirring pipe (4).

8. The non-point source pollution control device based on a clear water network according to claim 7, characterized in that, The stirring mechanism (2) also includes a stirring paddle (23); the stirring paddle (23) is located in the stirring chamber (13) and fixed to the outer peripheral wall of the stirring shaft (21), and is located above the jet stirring pipe (4).

9. The non-point source pollution control device based on a clear water network according to claim 1, characterized in that, It also includes a filter assembly (5), which includes a filter box (51) and a filter plate (52). The outer peripheral wall of the tank (1) is provided with a liquid inlet (15) corresponding to the top of the stirring chamber (13). The outlet of the filter box (51) is connected to the inlet (15); the filter plate (52) is detachably connected in the inner cavity of the filter box (51) and corresponds to the inlet and outlet of the filter box (51).

10. A non-point source pollution control device based on a clear water network according to claim 9, characterized in that, The filter box (51) is fixedly connected to the outer peripheral wall of the tank (1) and its outlet is connected to the inlet (15). The inlet is located on the side wall of the filter box (51) away from the tank (1). The filter box (51) has an insertion through hole (511) in the middle of its top surface. The lower part of the filter plate (52) can pass through the insertion through hole (511) and be detachably installed on the filter box (51). The upper part of the filter plate (52) can block the insertion through hole (511).

Images