Mechanical accelerated clarifier integrated with reservoir

Abstract

The present application relates to wastewater treatment technical field, specifically, it relates to a kind of mechanical acceleration clarifier and reservoir integrated wastewater treatment mechanism, including industrial clarifier and industrial reservoir, the industrial clarifier is fixed in industrial reservoir by support column, the industrial reservoir is discharged with constant flow, the industrial clarifier is equipped with sludge lifting separation assembly, cofferdam and water supply component, overflow adjustment component for controlling water body into industrial reservoir through cofferdam is arranged between the industrial clarifier and cofferdam, the industrial reservoir is equipped with buoyancy adjustment component, the buoyancy adjustment component rises and falls with the water level in industrial reservoir to synchronously regulate water supply component, sludge lifting separation assembly, overflow adjustment component switching state, the integrated wastewater treatment mechanism, industrial clarifier is erected above industrial reservoir as a whole, by means of the operation mode of constant flow discharge of industrial reservoir, cooperate cofferdam, diversion pipe and three groups of flow regulating valve constitute closed-loop water level feedback mechanism.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and more specifically, to a wastewater treatment mechanism that integrates a mechanically accelerated clarification tank and a water storage tank. Background Technology

[0002] A mechanically accelerated clarifier is a highly efficient clarification structure that integrates mixing, flocculation, and sedimentation processes. Its core feature is a mechanical stirring device within the tank. Raw water, coagulant, flocculant aid, and concentrated activated sludge returned to the tank are rapidly mixed under the intense agitation of the stirring impeller, forming a high-concentration, highly active floc suspension. Subsequently, the water flows upward into the separation chamber under the guidance of the guide tube. Due to the increased cross-sectional area, the flow velocity decreases sharply, and the flocs separate from the water under gravity. The clear water rises to the top collection trough and is collected and discharged, while a portion of the settled sludge is continuously pumped back to the stirring zone through a sludge return device. One part participates in a new round of flocculation reaction, while the other part is discharged periodically as excess sludge. It has the advantages of high treatment efficiency, low and stable effluent turbidity. However, its operation mode is close to that of a continuous stirred reactor. The water flow in the tank has the characteristic of back mixing, which makes it easy to disrupt the balance of the floc suspension layer established in the tank. This causes some fine flocs or impurities that have not settled sufficiently to be carried out by the rising water flow and thus mixed into the subsequent storage tank. The storage tank itself does not have the function of enhanced sedimentation or filtration. Long-term acceptance of these impurities will gradually accumulate at the bottom of the tank, which not only reduces the storage capacity, but may also affect the water quality due to sludge decay, and increase the frequency and difficulty of regular cleaning. Chinese Patent Publication No. CN112354226B discloses a mechanically accelerated clarification tank. The clarification tank body has a bridge frame above it, on which a stirring motor is fixed. Inside the clarification tank body is a first reaction chamber. At the bottom of the stirring tank is a first cover. The stirring shaft of the stirring motor is equipped with a stirring impeller and a sludge scraper. The first cover is fixedly connected to the scraper arm. Outside the first reaction chamber is a second reaction chamber, which is formed by the second cover fixed to the bridge frame, the outer wall of the stirring tank, and the outer wall of the first cover. The second cover consists of a first cone-shaped upper part and a second cone-shaped lower part with an expanded diameter. The second cone has a through hole. An inclined plate is provided between the outer wall of the second cover and the inner wall of the clarification tank body. The area below the inclined plate is a third reaction chamber. The expanded diameter of the lower part of the second reaction chamber allows the fluid to tangentially reach the active substances at the bottom of the tank, forming a third reaction chamber. This extends the contact flocculation time and increases the flocculation volume, solving the problem of alum floc and sludge breaking and floating. Chinese Patent Publication No. CN121627160A discloses an integrated water treatment system with a superimposed arrangement of a clarifier and a storage tank, relating to the field of water treatment technology. The system includes: a support frame with several crossbeams on both sides; a support mechanism evenly arranged at the top of the support frame; a mechanically accelerated clarifier located at the top of the support mechanism; a gravity-flow conveying mechanism located inside the mechanically accelerated clarifier; a buffer and stabilizing mechanism located in the middle of the support mechanism; and an industrial storage tank located below the support frame, connected to the gravity-flow conveying mechanism via a connecting pipe. This invention features a reasonable and reliable structure. By placing the industrial storage tank below and the mechanically accelerated clarifier above, a superimposed arrangement is achieved, effectively reducing the system's footprint and improving space utilization. Simultaneously, the coordinated operation of all components ensures the overall stability and functionality of the system, achieving an efficient and compact layout. The above technologies all rely on continuous stirring and continuous water output to achieve water treatment, which has the following drawbacks: 1. Continuous outflow easily carries away immature flocs, resulting in a significant back-mixing effect and poor stability of effluent water quality; 2. Relying on impeller speed regulation to enhance the clarification effect, it is easy to generate strong shear impact, which directly disperses the flocculent layer; 3. It is impossible to achieve a dynamic balance between stirring flocculation and stable overflow, making it difficult to balance efficiency and water quality optimization. Based on this, the present invention discloses an integrated wastewater treatment mechanism combining a mechanically accelerated clarification tank and a water storage tank. Summary of the Invention

[0003] To address the shortcomings of existing mechanically accelerated clarifiers, such as poor effluent quality stability and the tendency for impeller speed adjustment to easily dissipate the flocculated layer, making it difficult to balance efficiency and water quality optimization, this invention provides an integrated wastewater treatment mechanism combining a mechanically accelerated clarifier and a storage tank. The mechanism includes an industrial clarifier and an industrial storage tank. The industrial clarifier is fixed within the industrial storage tank by support columns. The industrial storage tank discharges water at a constant flow rate. The industrial clarifier is equipped with a sludge separation component, a weir, and a water supply component. An overflow regulating component is located between the industrial clarifier and the weir to control the flow of water into the industrial storage tank via the weir. A buoyancy regulating component is located within the industrial storage tank. This buoyancy regulating component adjusts the switching states of the water supply component, sludge separation component, and overflow regulating component in sync with the rise and fall of the water level in the industrial storage tank. The industrial storage tank experiences periodic rises and falls in water level due to the constant flow rate of discharge and the intermittent water intake through the weir. During the process of the water level in the industrial water storage tank decreasing, the buoyancy adjustment component, in conjunction with the water supply component, the sludge separation component, and the overflow adjustment component, gradually switches to reduce the sludge separation efficiency in the industrial clarification tank, so that the water in the industrial clarification tank flows gently through the cofferdam to the industrial water storage tank below. When the water level decreases, the system switches to a low-intensity overflow drainage mode. During the process of the water level rising in the industrial water storage tank, the buoyancy adjustment component, the water supply component, the sludge separation component, and the overflow adjustment component are gradually switched to improve the sludge separation efficiency in the industrial clarification tank, and gradually block the water in the industrial clarification tank from flowing to the industrial water storage tank below through the cofferdam. When the water level rises, the system switches to a high-intensity closed flocculation mode.

[0004] As a further improvement to this technical solution, the industrial clarification tank includes a separation tank and a connecting plate fixed between the two side walls of the separation tank. A first enclosure and a second enclosure are fixed to the lower side of the connecting plate. The diameter of the first enclosure is smaller than the diameter of the second enclosure and the two are coaxially arranged. Multiple return ports are equidistantly arranged on the periphery of the first enclosure. A first cone is fixed to the bottom edge of the first enclosure and a second cone is fixed to the bottom edge of the second enclosure. The return ports help to eliminate large-scale eddies, prevent floc breakage, and create a stable flow field for subsequent gentle settling.

[0005] As a further improvement to this technical solution, both the first cone and the second cone have a structure that is narrow at the top and wide at the bottom, and the gap between the first cone and the second cone gradually increases from top to bottom. The rising water flows upward from the bottom of the first cone and then turns back downward through the annular channel between the two cones. The decreasing flow velocity promotes the gravity settling of the flocs.

[0006] As a further improvement to this technical solution, the bottom of the separation tank has a structure that is wider at the top and narrower at the bottom. A narrow slit is formed between the inner wall of the separation tank and the first cone. A sludge discharge pipe is fixedly embedded at the lowest point of the separation tank. The bottom end of the sludge discharge pipe passes through the industrial water storage tank and is connected to a sludge discharge valve. The narrow slit prevents the bottom sludge from being rolled up by the upward flow. The cone-shaped bottom guides the sludge to concentrate towards the sludge discharge pipe, which can form a strong internal mixing and a slow external settling mechanism.

[0007] As a further improvement to this technical solution, the buoyancy adjustment component includes a buoyancy device slidably fitted on the inner wall of the industrial water storage tank and a guide ring fixed to the inner wall of the industrial water storage tank. At least two sliding rods are fixed on the upper side of the buoyancy device, and a lifting beam is fixedly connected between the top ends of the two sliding rods. The lifting beam is located above the industrial clarification tank, and the sliding rods and the guide ring are slidably connected. During the rise and fall of the water level in the industrial water storage tank, the water level change is converted into the vertical linear motion of the lifting beam, driving other components to move in tandem.

[0008] As a further improvement to this technical solution, the sludge separation component includes a box fixed to a connecting plate. A drive motor is fixed to one side of the box. A spline sleeve is rotatably embedded in the bottom wall of the box. A driven bevel gear is fixedly sleeved on the outer side of the top of the spline sleeve. The driven bevel gear meshes with a drive bevel gear. The drive bevel gear is fixedly connected to the output end of the drive motor. A spline shaft is slidably sleeved in the middle of the spline sleeve. The top of the spline shaft passes through the box and is rotatably connected to a lifting beam. A stirring rod is fixedly connected to the bottom of the spline shaft. The bottom of the stirring rod extends into the first cone and is fixedly connected to an impeller. The motor drives the impeller to rotate at a constant speed. At the same time, the impeller can change its position in the cone by moving up and down with the lifting beam, avoiding shearing impact caused by changes in rotation speed, and the flocculated layer is not easily dispersed.

[0009] As a further improvement to this technical solution, the water supply assembly includes an inlet pipe fixedly embedded in the bottom wall of the industrial clarifier. The top end of the inlet pipe extends into the interior of the first cone, and the bottom end of the inlet pipe passes through the industrial water storage tank and is connected to a sewage tank via a first flow regulating valve. A valve plate is fixedly connected to the valve stem of the first flow regulating valve. The valve plate is hinged with a diagonal rod, and an adjusting plate is hinged to the top of the diagonal rod. The adjusting plate is fixedly connected to an adjacent sliding rod. When the water level rises or falls, the inlet flow rate needs to be adjusted synchronously. The inlet flow rate is automatically adjusted in the opposite direction to the water level, closing smaller when the water level drops and opening larger when the water level rises, matching the treatment intensity of the clarifier and avoiding excessive water intake or flow interruption.

[0010] As a further improvement to this technical solution, the overflow regulating component includes a notch formed in the wall of the separation tank. A one-way valve is hinged to one side of the notch. A first rotating seat is rotatably connected to the upper side of the one-way valve. A cantilever is hinged to one side of the first rotating seat. A second rotating seat is hinged to the cantilever. The second rotating seat rotates in cooperation with an adjacent sliding rod. When the water level rises or falls, the overflow channel needs to be opened or closed. The overflow regulating component accurately converts linear motion into rotational motion, and the opening and closing are smooth and without jamming, realizing automatic overflow control.

[0011] As a further improvement to this technical solution, the one-way valve can be flush with the wall of the separation tank, and its maximum opening and closing angle toward the axis of the separation tank is 15°. The opening and closing direction of the one-way valve is set opposite to the rotation direction of the impeller, resulting in minimal overflow disturbance, preventing the flocculation layer at the bottom of the tank from being washed away, ensuring clear effluent and not disrupting the flow field inside the tank.

[0012] As a further improvement to this technical solution, a drain pipe is provided on one side of the bottom of the industrial water storage tank. The drain pipe is connected to a clear water tank through a second flow regulating valve. At least one guide pipe connected to the industrial water storage tank is provided at the bottom of the cofferdam, and a third flow regulating valve is installed on the guide pipe. The flow rate of the third flow regulating valve is always greater than the flow rate of the second flow regulating valve. The industrial water storage tank continuously drains water, while the cofferdam intermittently receives water, which can form a stable water level fluctuation cycle and automatically control the intermittent rhythm of efficient flocculation and overflow discharge.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this integrated wastewater treatment mechanism combining a mechanically accelerated clarifier and a storage tank, the industrial clarifier is erected above the industrial storage tank. Utilizing the constant flow discharge operation of the industrial storage tank, a closed-loop water level feedback mechanism is formed by a weir, a guide pipe, and three sets of flow regulating valves. When the water level in the industrial storage tank drops, the buoyancy regulating component moves downwards simultaneously. On one hand, the linkage valve plate gradually closes the first flow regulating valve, reducing the inflow to the industrial clarifier. On the other hand, it pushes the one-way valve disc to open inwards, allowing the clarified water from the upper layer of the industrial clarifier to flow smoothly through the notch and the weir. Overflowing into the industrial water storage tank reduces the amount of fine flocs or impurities that have not settled sufficiently and are carried out with the water flow. When the water level in the industrial water storage tank rises, the buoyancy adjustment component moves upward in the opposite direction. This not only opens the inlet valve to increase the amount of wastewater entering the tank, but also pulls the one-way valve to gradually close the overflow channel, blocking the water from overflowing outward. Wastewater can only be fully mixed, flocculated, and settled inside the industrial clarifier. The two working states of the industrial clarifier can be automatically switched by relying solely on water level changes, allowing sufficient intermittent time for the flocculation reaction, thus balancing wastewater treatment efficiency and effluent water quality stability. 2. In this integrated wastewater treatment mechanism combining a mechanically accelerated clarification tank and a storage tank, when the water level in the industrial storage tank rises, the buoyancy adjustment component drives the impeller to move upward to the narrow opening area at the top of the first cone. The narrowing of the flow channel naturally increases the upward flow velocity, thereby enhancing the turbulent mixing effect of the mud-water mixture. This promotes the full collision and flocculation of tiny suspended particles and sludge flocs, improving the accelerated clarification efficiency. When the water level in the industrial storage tank decreases, the impeller moves downward with the buoyancy adjustment component to the wide opening area at the bottom of the first cone. The gap between the impeller and the inner wall of the first cone increases, and the upward flow velocity decreases accordingly. The turbulence intensity weakens, creating stable conditions for the sludge flocs to settle and return. This avoids the situation where sudden changes in speed disperse the already deposited flocculated layer at the bottom of the tank. The water flow relies on the original inertia for a natural transition, which can effectively avoid sludge floating or turbid effluent caused by turbulent flow field. While achieving dynamic adjustment of flocculation efficiency, it minimizes interference with the original flocculation system. 3. In this integrated wastewater treatment mechanism combining a mechanically accelerated clarifier and a storage tank, the opening and closing direction of the one-way valve is opposite to the rotation direction of the impeller. When the water flows out through the notch, it is discharged tangentially, avoiding any collision with the water flow inside the tank. Furthermore, the one-way valve opens and closes gradually and smoothly with the buoyancy adjustment component, ensuring a stable water flow and effectively preventing problems such as eddies, turbulence, and the agitation and floating of sludge flocs. Simultaneously, the influent flow rate adjustment, impeller vertical speed regulation, and one-way valve opening control are all driven synchronously by the same buoyancy adjustment component. Throughout the entire process of switching operating conditions, the original vertical circulation flow field in the industrial clarifier can be kept dynamically stable, minimizing interference with the flocculation and sedimentation environment and achieving optimal effluent quality. Overflow is achieved without disrupting the flocculation layer flow field, and the high flocculation intensity and high effluent quality are staggered in sequence, avoiding the inherent contradiction between the two, namely the defect of backmixing in the water flow of a stirred reactor. Attached Figure Description

[0014] Figure 1 This is an external view of the present invention; Figure 2 This is a cross-sectional view of the clarifier in the settling state in this invention. Figure 3 Appendix to this invention Figure 1 Enlarged view of the structure at point A in the image; Figure 4 Appendix to this invention Figure 2 Enlarged view of the structure at point B in the image; Figure 5 Appendix to this invention Figure 2 Enlarged view of the structure at point C in the image; Figure 6 Appendix to this invention Figure 2 Enlarged view of the structure at point D in the image; Figure 7 This is a cross-sectional view of the clarifier in the overflow state according to the present invention; Figure 8 Appendix to this invention Figure 7 Enlarged view of the structure at point E in the image; Figure 9 Appendix to this invention Figure 7 Enlarged view of the structure at point F in the image; Figure 10 This is a perspective view of the mud separation component in this invention.

[0015] The labels in the diagram represent the following: 1. Industrial clarifier; 2. Industrial reservoir; 3. Support column; 4. Sludge separation assembly; 5. Overflow regulating assembly; 6. Buoyancy regulating assembly; 11. Cofferdam; 111. Guide pipe; 112. Third flow regulating valve; 12. Water supply assembly; 121. Inlet pipe; 122. First flow regulating valve; 123. Valve plate; 124. Diagonal rod; 125. Regulating plate; 13. Separation tank; 14. Connecting plate; 141. First enclosure; 1411. Return port; 1412. 142. First cone; 142. Second enclosure; 1421. Second cone; 15. Sludge discharge pipe; 21. Drainage pipe; 22. Second flow regulating valve; 41. Box body; 42. Drive motor; 43. Spline sleeve; 44. Driven bevel gear; 45. Driven bevel gear; 46. Spline shaft; 47. Stirring rod; 48. Impeller; 51. Notch; 52. One-way valve disc; 53. First rotating seat; 54. Cantilever; 55. Second rotating seat; 61. Buoyancy device; 62. Sliding rod; 63. Lifting beam; 64. Guide ring. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Therefore, this invention provides an integrated wastewater treatment mechanism combining a mechanically accelerated clarification tank and a water storage tank. (See attached image) Figure 1 , Figure 2 , Figure 7 As shown, the system includes an industrial clarification tank 1 and an industrial water storage tank 2. The industrial clarification tank 1 is fixed inside the industrial water storage tank 2 by a support column 3. The industrial water storage tank 2 discharges water at a constant flow rate. The industrial clarification tank 1 is equipped with a sludge separation component 4, a weir 11, and a water supply component 12. An overflow regulating component 5 is provided between the industrial clarification tank 1 and the weir 11 to control the water body entering the industrial water storage tank 2 through the weir 11. The industrial water storage tank 2 is equipped with a buoyancy regulating component 6. The buoyancy regulating component 6 adjusts the switching state of the water supply component 12, the sludge separation component 4, and the overflow regulating component 5 synchronously with the rise and fall of the water level in the industrial water storage tank 2. During operation, when the buoyancy regulating component 6 decreases with the water level, it triggers all components to switch to a mode that reduces the sludge separation efficiency in the clarifier, allowing the water to flow gently through the cofferdam 11 to the industrial reservoir 2. When the buoyancy regulating component 6 increases with the water level, it triggers all components to switch to a mode that increases the sludge separation efficiency, gradually blocking the water from overflowing downwards through the cofferdam 11. By utilizing the reservoir's own constant drainage characteristics and the automatic rise and fall of the water level, a closed-loop feedback is formed, enabling the automatic alternation of the treatment intensity and overflow state of the industrial clarifier 1. It is worth noting that the volume and flow velocity of the cofferdam 11 together determine the duration of the rising water level in the industrial reservoir 2, thus controlling the interval between the two overflows. This allows the industrial clarifier 1 to obtain sufficient settling time and avoids frequent switching that could interfere with the flocculation reaction.

[0018] Further, see Figure 2 , Figure 7 As shown, during the process of lowering the water level in the industrial water storage tank 2, the buoyancy adjustment component 6, together with the water supply component 12, the sludge separation component 4, and the overflow adjustment component 5, gradually switches to reduce the sludge separation efficiency in the industrial clarifier tank 1, so that the water in the industrial clarifier tank 1 flows gently through the cofferdam 11 to the industrial water storage tank 2 below. During operation, the buoyancy adjustment component 6 reduces the influent flow rate and the efficiency of the sludge separation component 4, making the mud-water mixing and flocculation reaction more gradual, thereby actively reducing the sludge separation efficiency in the industrial clarifier 1; at the same time, the water body is gradually opened to flow through the cofferdam 11 to the industrial reservoir 2 below, so that the upper clarified water body overflows in a gentle thin layer, avoiding the dispersion of the flocculated layer already deposited at the bottom of the pool or the rolling up of immature flocs due to excessive flow velocity or strong turbulence, ensuring that the overflow water is clear.

[0019] Further, see Figure 2 , Figure 7 As shown, during the process of the water level rising in the industrial water storage tank 2, the buoyancy adjustment component 6 is linked to the water supply component 12, the sludge separation component 4, and the overflow adjustment component 5 in reverse to gradually switch to improve the sludge separation efficiency in the industrial clarifier 1, and gradually block the water in the industrial clarifier 1 from flowing to the industrial water storage tank 2 below through the cofferdam 11. During operation, the buoyancy adjustment component 6 increases the influent flow rate and the efficiency of the sludge separation component 4, making the mud-water mixing and flocculation reaction more complete, thereby significantly improving the sludge separation efficiency of the industrial clarifier 1; at the same time, it gradually blocks the water from flowing through the cofferdam 11 to the industrial storage tank 2 below, forcing the sewage to complete the complete flocculation and sedimentation process inside the industrial clarifier 1, avoiding premature overflow of immature flocs or fine impurities.

[0020] Further, see Figure 2 , Figure 5As shown, the industrial clarification tank 1 includes a separation tank 13 and a connecting plate 14 fixed between the two side walls of the separation tank 13. A first enclosure 141 and a second enclosure 142 are fixed on the lower side of the connecting plate 14. The diameter of the first enclosure 141 is smaller than the diameter of the second enclosure 142 and the two are coaxially arranged. A plurality of return ports 1411 are equidistantly arranged on the periphery of the first enclosure 141. A first cone 1412 is fixed to the bottom edge of the first enclosure 141, and a second cone 1421 is fixed to the bottom edge of the second enclosure 142. During operation, when the rising water flow generated by the impeller 48 carries the mud-water mixture into the interior of the first enclosure 141, the return port 1411 discharges the water radially outward, which helps to reduce large-scale vortices.

[0021] Further, see Figure 2 , Figure 5 , Figure 7 As shown, both the first cone 1412 and the second cone 1421 have a structure that is narrow at the top and wide at the bottom, and the gap between the first cone 1412 and the second cone 1421 gradually increases from top to bottom; During operation, as the rising water flows upward from the bottom of the first cone 1412, the cross-sectional area gradually contracts as the water rises due to the narrow upper part and wide lower part of the first cone 1412. The flow velocity increases along the flow path, thus forming a strong turbulent mixing zone in the upper part of the cone, promoting full collision and flocculation of mud and water. When the water carrying flocs overflows from the top of the first cone 1412 and enters the annular channel between the first cone 1412 and the second cone 1421, the gap gradually increases from top to bottom, the cross-sectional area gradually expands along the water flow direction, and the water velocity decreases along the flow path. The gradual decrease in flow velocity allows the flocs to obtain sufficient settling time under the action of gravity, and the heavier sludge flocs gradually settle to the outside and downward.

[0022] Further, see Figure 1 , Figure 2 , Figure 7 As shown, the bottom of the separation tank 13 has a structure that is wider at the top and narrower at the bottom. A narrow slit is formed between the inner wall of the separation tank 13 and the first cone 1412. A sludge discharge pipe 15 is fixedly embedded at the lowest point of the separation tank 13. The bottom end of the sludge discharge pipe 15 passes through the industrial water storage tank 2 and is connected to a sludge discharge valve. During operation, the narrow slits serve to limit and block the flow, allowing the high-concentration sludge that has settled down to slowly pass through the slits into the bottom of the separation tank 13, while preventing the sludge flocs that have already settled at the bottom from being rolled up again and carried back to the clarification zone by the disturbance of the rising water flow. A sludge discharge pipe 15 is fixedly embedded at the lowest point of the separation tank 13. The bottom end of the sludge discharge pipe 15 passes through the industrial water storage tank 2 and is connected to the sludge discharge valve. When the sludge at the bottom of the tank accumulates to a certain thickness, the sludge discharge valve can be opened to discharge the sludge out of the tank using hydrostatic pressure, thereby maintaining a stable sludge circulation concentration in the tank and ensuring the long-term stability of flocculation and separation effects.

[0023] Further, see Figure 1 , Figure 2 , Figure 7 As shown, the buoyancy adjustment assembly 6 includes a buoyancy device 61 slidably sleeved on the inner wall of the industrial water storage tank 2 and a guide ring 64 fixed to the inner wall of the industrial water storage tank 2. At least two sliding rods 62 are fixed on the upper side of the buoyancy device 61, and a lifting beam 63 is fixedly connected between the top ends of the two sliding rods 62. The lifting beam 63 is located above the industrial clarification tank 1, and the sliding rods 62 and the guide ring 64 are slidably connected. During operation, the buoyancy device 61 can also take the form of a hollow float ring, float box, float plate, or combination of multiple floats, and can be made of materials such as stainless steel or engineering plastics to adapt to the wastewater treatment environment. When the water level in the industrial water storage tank 2 rises or falls, the buoyancy of the buoyancy device 61 changes accordingly, so that it always floats on the water surface and moves up and down synchronously with the water level. The sliding rod 62 maintains vertical rise and fall under the constraint of the guide ring 64, converting the buoyancy motion of the buoyancy device 61 into a smooth linear reciprocating motion.

[0024] Further, see Figure 2 , Figure 4 , Figure 7 , Figure 10 As shown, the mud separation assembly 4 includes a housing 41 fixed on a connecting plate 14. A drive motor 42 is fixed on one side of the housing 41. A spline sleeve 43 is rotatably embedded on the bottom wall of the housing 41. A driven bevel gear 44 is fixedly sleeved on the outer side of the top of the spline sleeve 43. The driven bevel gear 44 is meshed with a drive bevel gear 45. The drive bevel gear 45 is fixedly connected to the output end of the drive motor 42. A spline shaft 46 is slidably sleeved in the middle of the spline sleeve 43. The top of the spline shaft 46 passes through the housing 41 and is rotatably connected to the lifting beam 63. A stirring rod 47 is fixedly connected to the bottom end of the spline shaft 46. The bottom end of the stirring rod 47 extends into the first cone 1412 and is fixedly connected to an impeller 48. During operation, the drive motor 42 maintains a constant speed, driving the spline sleeve 43 to rotate via the driving bevel gear 45 and the driven bevel gear 44. The spline sleeve 43 drives the spline shaft 46, stirring rod 47, and impeller 48 to rotate together. The high-speed rotation of the impeller 48 generates an upward lifting water flow, pushing the mud-water mixture at the bottom of the first cone 1412 upward. This causes the tiny suspended particles in the wastewater to collide violently with the existing sludge flocs in the tank. When the buoyancy adjustment component 6 moves the lifting beam 63 up and down, the spline shaft 46 slides axially relative to the spline sleeve 43, thereby changing the vertical position of the impeller 48 within the first cone 1412. Meanwhile, the drive motor 42 continues to rotate. Ultimately, the impeller 48 is kept rotating continuously through a bevel gear pair and spline drive, thereby achieving constant speed driving the impeller 48 to rotate at different water depths. This maintains the circulating flow field required for mud-water mixing and flocculation, and can also adjust the upward flow velocity and turbulence intensity according to water level changes. It is worth noting that the spline shaft 46 and spline sleeve 43 can achieve a transmission effect that is compatible with rotation and axial displacement. Furthermore, the gap between the spline shaft 46 and spline sleeve 43 is filled with lubricating grease. The grease lubrication reduces the frictional resistance when the two slide relative to each other, avoids jamming during long-term operation, and effectively prevents corrosion of the mating surfaces, thereby improving the operational stability and service life of the transmission mechanism.

[0025] Further, see Figure 6 , Figure 8 As shown, the water supply assembly 12 includes an inlet pipe 121 fixedly embedded in the bottom wall of the industrial clarifier 1. The top end of the inlet pipe 121 extends into the interior of the first cone 1412. The bottom end of the inlet pipe 121 passes through the industrial water storage tank 2 and is connected to the sewage tank through the first flow regulating valve 122. A valve plate 123 is fixedly connected to the valve stem of the first flow regulating valve 122. A diagonal rod 124 is hinged to the valve plate 123. An adjusting plate 125 is hinged to the top end of the diagonal rod 124. The adjusting plate 125 is fixedly connected to the adjacent sliding rod 62. During operation, when the sliding rod 62 descends, the adjusting plate 125 moves downward and pushes the valve plate 123 to rotate via the inclined rod 124. The valve plate 123 drives the valve rod to rotate, thereby gradually reducing the opening of the first flow regulating valve 122, reducing the sewage flow into the first cone 1412 through the inlet pipe 121. This matches the low-efficiency overflow state of the industrial clarifier 1 at this time, preventing excessive water intake from causing a large amount of insufficiently flocculated water to overflow. When the sliding rod 62 rises, the adjusting plate 125 moves upward and pulls the valve plate 123 in the opposite direction via the inclined rod 124, causing the valve rod to rotate and gradually opening the first flow regulating valve 122, increasing the sewage intake. This matches the high-efficiency flocculation state of the industrial clarifier 1 at this time, making full use of the tank's treatment capacity. Moreover, the adjustment process is continuous with changes in water level, without sudden switching, avoiding hydraulic impact on the flocculation layer in the tank caused by sudden changes in inlet flow. Preferably, the top opening of the water inlet pipe 121 can be set along the tangential direction of the water in the first cone 1412, so that the water flows in tangentially along the inner wall of the cone, forming a pre-swirling flow field consistent with the rotation direction of the impeller 48, thereby reducing the direct impact of the water jet on the blades of the impeller 48, and using the pre-swirling momentum to help improve the circulation efficiency; or the top opening of the water inlet pipe 121 can be angled directly towards the inner wall of the first cone 1412, so that the water jet directly impacts the inner wall of the cone and spreads along the wall surface, relying on the wall effect to quickly and evenly distribute at the bottom of the first cone 1412, avoiding local jet causing floc breakage or flow field turbulence.

[0026] Further, see Figure 3 , Figure 9 As shown, the overflow regulating assembly 5 includes a notch 51 formed on the wall of the separation tank 13. A one-way valve disc 52 is hinged to one side of the notch 51. A first rotating seat 53 is rotatably connected to the upper side of the one-way valve disc 52. A cantilever 54 is hinged to one side of the first rotating seat 53. A second rotating seat 55 is hinged to the cantilever 54. The second rotating seat 55 is rotatably engaged with an adjacent sliding rod 62. During operation, when the cantilever 54 descends with the sliding rod 62, the cantilever 54 pushes the first rotating seat 53 and causes the one-way valve 52 to flip and open around its hinge point with the notch 51 on one side towards the axis of the separation tank 13; when the sliding rod 62 rises, the cantilever 54 pulls the first rotating seat 53, causing the one-way valve 52 to rotate in the opposite direction until it is flush with the tank wall of the separation tank 13 and closes; the first rotating seat 53 and the second rotating seat 55 can rotate horizontally, and both ends of the cantilever 54 can rotate vertically, thereby realizing the universal adjustment of the cantilever 54 and avoiding jamming. It is worth noting that since the overflow adjustment component 5 and the buoyancy adjustment component 6 are linked together, and the opening and closing angle of the one-way valve 52 is constant, this structure can limit the range of motion of the overflow adjustment component 5.

[0027] Further, see Figure 2 , Figure 7 , Figure 3 , Figure 9 As shown, the one-way valve 52 can be flush with the wall of the separation tank 13, and its maximum opening and closing angle toward the axis of the separation tank 13 is 15°. The opening and closing direction of the one-way valve 52 is set opposite to the rotation direction of the impeller 48. During operation, when the impeller 48 rotates, it drives the water in the first cone 1412 to form a tangential rotating flow field that is consistent with the direction of the impeller 48. When the buoyancy adjustment component 6 moves down to push open the one-way valve 52, the valve plate does not block the main flow, allowing the water to flow out by its own inertia. The small angle of 15° effectively limits the flow width, allowing the water to flow out along the vertical narrow gap, avoiding the water flow being forced to turn and causing obstruction and eddies under the traditional overflow opening method.

[0028] Further, see Figure 1 , Figure 2 , Figure 7 As shown, a drain pipe 21 is provided on one side of the bottom of the industrial water storage tank 2. The drain pipe 21 is connected to a clear water tank through a second flow regulating valve 22. At least one guide pipe 111 is provided at the bottom of the cofferdam 11 and is connected to the industrial water storage tank 2. A third flow regulating valve 112 is installed on the guide pipe 111. The flow rate of the third flow regulating valve 112 is always greater than the flow rate of the second flow regulating valve 22. During operation, when the overflow regulating component 5 is opened and clarified water enters the cofferdam 11, the rate at which water flows into the industrial water storage tank 2 through the diversion pipe 111 is necessarily greater than the rate at which the industrial water storage tank 2 discharges water, causing the water level in the industrial water storage tank 2 to rise continuously. This rising process pushes the buoyancy regulating component 6 upward, which in turn closes the overflow regulating component 5, cutting off the water supply to the cofferdam 11. After this, only the second flow regulating valve 22 is discharging water from the industrial water storage tank 2. Since the water inlet is cut off, the discharge rate is greater than the inlet rate, and the water level begins to gradually decrease. The buoyancy regulating component 6 then moves downward and reopens the overflow regulating component 5. A large amount of clarified water overflows into the cofferdam 11 through the notch 51. The water storage and diversion process of the cofferdam 11 provides the duration for the water level to rise, thereby ensuring... This demonstrates that the industrial clarifier 1 can achieve a sufficiently long closed-loop efficient flocculation and sedimentation time after the overflow is closed, allowing the wastewater to fully mix, flocculate, and settle within the tank, avoiding frequent switching that could interfere with the flocculation layer. It is worth noting that the greater the difference between the flow rate of the third flow regulating valve 112 and the flow rate of the second flow regulating valve 22, the faster the water level in the industrial water storage tank 2 rises, thus triggering the buoyancy regulating component 6 to close the overflow more quickly, allowing the system to enter the efficient flocculation state earlier, while shortening the duration of each overflow. Conversely, if the difference is small, the water level rises slowly, the overflow duration becomes longer, and the system remains in the low-intensity overflow mode for a longer period. Adjusting the opening of the second flow regulating valve 22 alone can control the duration of the efficient flocculation stage.

[0029] In summary, this scheme achieves periodic water level fluctuations through constant drainage from the industrial reservoir 2 and intermittent water intake from the cofferdam 11. This, combined with the buoyancy adjustment component 6, water supply component 12, sludge separation component 4, and overflow adjustment component 5, forms a closed-loop water level feedback mechanism. The buoyancy adjustment component 6 operates in tandem with the water level: when the water level decreases, it moves the impeller 48 down to the wide opening at the bottom of the first cone 1412, increasing the gap and naturally reducing the upward flow velocity to 0.2 m / s. Simultaneously, it drives the valve plate 123 to close the first flow regulating valve 122, reducing the inflow, and pushes the one-way valve 52 to open 15° into the pool, allowing clarified water to overflow tangentially through the notch 51. When the water level rises, it reverses direction, moving the impeller 48 up to the narrow opening at the top, narrowing the gap and increasing the upward flow velocity to 0.8 m / s. At a speed of m / s, the inlet valve is opened and the one-way valve 52 is pulled to close the overflow channel; the flow rate of water stored in the cofferdam 11 entering the industrial water storage tank 2 is constantly greater than the drainage flow rate of the industrial water storage tank 2, causing the water level in the water storage tank to rise and fall automatically and periodically, which can smoothly switch between two modes: "low-intensity mixing, overflow drainage" and "high-intensity mixing, closed flocculation"; by changing the axial position of the impeller 48 in the conical cylinder, the cross-sectional area of ​​the flow section is changed, so that the water body is subjected to uniform compression force rather than local high-intensity shear force, thereby achieving The stepless and smooth adjustment of the upward flow velocity and turbulence intensity, along with the 15° small-angle tangential overflow and gentle opening and closing, ensures that the water flow is free from eddy current disturbances and does not disperse the flocculent layer. The entire process is seamlessly connected and does not interrupt the clarification treatment cycle. This overcomes the limitations of traditional mechanical accelerated clarifiers, where continuous overflow can easily carry away immature flocs and speed-controlled shearing impacts the flocculent layer. It ensures the acquisition of high-density, uninterrupted clear effluent and a stable sludge settling layer. This solution is particularly suitable for small and medium-sized mechanical accelerated clarifiers, where the appropriate scale makes it easier to achieve hydraulic balance and rapid response.

[0030] Working principle: In the industrial clarification tank 1, wastewater enters the first cone 1412 through the inlet pipe 121. The drive motor 42 drives the spline sleeve 43 to rotate through the active bevel gear 45 and the driven bevel gear 44. The spline sleeve 43 drives the spline shaft 46, the stirring rod 47, and the impeller 48 to rotate together. The high-speed rotation of the impeller 48 generates an upward lifting water flow, which pushes the mud-water mixture at the bottom of the first cone 1412 upward, causing the tiny suspended particles in the wastewater to collide violently with the original sludge flocs in the tank. The water then overflows smoothly from the return port 1411. When the water enters the annular channel between the first enclosure 141 and the second enclosure 142, since both the first cone 1412 and the second cone 1421 have a structure that is narrow at the top and wide at the bottom, and the two... The gap between the two gradually increases from top to bottom, and the water flow velocity decreases along the way. Under the combined action of centrifugal force and gravity, the heavier sludge flocs begin to settle to the outside and down until they fall into the bottom of the separation tank 13 through the narrow gap and re-enter the bottom of the first cone 1412. The narrow gap not only prevents the bottom sludge flocs from being rolled up by the upward flow, but also keeps the water in a stable state above the narrow gap. The clear water after separation floats up into the area between the second enclosure 142 and the inner wall of the separation tank 13 and flows out from the slot 51 at the top of the separation tank 13. When the sludge accumulates to a certain height at the bottom of the separation tank 13, it is periodically discharged out of the tank through the sludge discharge pipe 15, thereby maintaining a stable sludge concentration and separation effect in the tank and realizing a continuous mechanically accelerated clarification process. During the above-mentioned sludge separation process in the industrial clarifier 1, the industrial water storage tank 2 discharges water at a constant flow rate, and the buoyancy device 61 floats on the surface of the industrial water storage tank 2. When the water level in the industrial water storage tank 2 drops, the drainage rate of the industrial water storage tank 2 is greater than the inflow rate. The buoyancy device 61 moves downward. On the one hand, the inclined rod 124 pushes the valve plate 123 to gradually close the first flow regulating valve 122, reducing the amount of sewage supplied to the industrial clarifier 1 by the inlet pipe 121. On the other hand, the spline shaft 46 drives the impeller 48 to move downward to the bottom wide opening of the first cone 1412 through the stirring rod 47. Since the first cone 1412 has a structure that is narrow at the top and wide at the bottom, the gap between the blades of the impeller 48 and the inner wall of the first cone 1412 increases after the impeller 48 moves downward, resulting in a significant reduction in the upward flow velocity, a decrease in the circulation flow rate, and a decrease in the turbulence intensity. At the same time, the cantilever 54 moves downward with the sliding rod 62 and pushes the one-way valve 52 to open in the direction of the axis of the separation tank 13, so that the clarified water on the surface of the industrial clarifier 1 overflows quickly through the notch 51 to the cofferdam 11. The water in the cofferdam 11 slowly enters the industrial water storage tank 2 through the guide pipe 111. When the cofferdam 11 is in a water storage state, since the flow rate of the third flow regulating valve 112 is always greater than the flow rate of the second flow regulating valve 22, the inflow of the industrial water storage tank 2 will inevitably be greater than the outflow, and the water level will rise. When the water level in the industrial water storage tank 2 rises, the buoyancy device 61 moves upward. On the one hand, the inclined rod 124 pushes the valve plate 123 to gradually increase the first flow regulating valve 122, increasing the sewage supply from the inlet pipe 121 to the industrial clarifier 1. On the other hand, the spline shaft 46 drives the impeller 48 to move upward to the narrow opening at the top of the first cone 1412 through the stirring rod 47. Since the first cone 1412 has a structure that is narrow at the top and wide at the bottom, the upward flow velocity generated by the rotation of the impeller 48 increases sharply, forming a strong circulating flow. The mud-water mixture is accelerated to separate in the centrifugal force and gravity field, and the turbulence intensity increases. At the same time, the cantilever 54 moves upward and pulls the one-way valve 52 to gradually close it, blocking the overflow. At this time, the industrial clarifier 1 is in a state of high separation efficiency. The inlet water volume is large, but there is almost no overflow to the industrial water storage tank 2. The liquid level in the industrial clarifier 1 rises, and the water body is fully retained and purified in the tank. After the water stored in the cofferdam 11 is exhausted, the industrial water storage tank 2 continues to discharge water at a constant rate, while the overflow is cut off. The water level in the industrial water storage tank 2 will gradually drop from a high level, thereby triggering the buoyancy device 61 to move down again, repeating the above process.

[0031] 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 preferred examples and are not intended to limit 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 present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wastewater treatment mechanism integrating a mechanically accelerated clarification tank and a water storage tank, comprising an industrial clarification tank (1) and an industrial water storage tank (2), wherein the industrial clarification tank (1) is fixed within the industrial water storage tank (2) by a support column (3), characterized in that: The industrial water storage tank (2) discharges water at a constant flow rate. The industrial clarification tank (1) is equipped with a sludge separation component (4), a weir (11), and a water supply component (12). An overflow regulating component (5) for controlling the water body to enter the industrial water storage tank (2) through the weir (11) is provided between the industrial clarification tank (1) and the weir (11). The industrial water storage tank (2) is equipped with a buoyancy regulating component (6). The buoyancy regulating component (6) adjusts the switching state of the water supply component (12), the sludge separation component (4), and the overflow regulating component (5) synchronously with the rise and fall of the water level in the industrial water storage tank (2). During the process of lowering the water level in the industrial water storage tank (2), the buoyancy adjustment component (6) is linked with the water supply component (12), the sludge separation component (4), and the overflow adjustment component (5) to gradually switch to reducing the sludge separation efficiency in the industrial clarifier (1), so that the water in the industrial clarifier (1) flows smoothly through the cofferdam (11) to the industrial water storage tank (2) below. During the process of the water level rising in the industrial water storage tank (2), the buoyancy adjustment component (6) is linked in reverse with the water supply component (12), the mud separation component (4), and the overflow adjustment component (5) to gradually switch to improve the mud separation efficiency in the industrial clarifier (1) and gradually block the water in the industrial clarifier (1) from flowing to the industrial water storage tank (2) below through the cofferdam (11). The industrial clarification tank (1) includes a separation tank (13) and a connecting plate (14) fixed between the two side walls of the separation tank (13). A first enclosure (141) and a second enclosure (142) are fixed on the lower side of the connecting plate (14). The diameter of the first enclosure (141) is smaller than the diameter of the second enclosure (142) and the two are coaxially arranged. A plurality of return ports (1411) are equidistantly arranged on the periphery of the first enclosure (141). A first cone (1412) is fixed on the bottom edge of the first enclosure (141) and a second cone (1421) is fixed on the bottom edge of the second enclosure (142). The first cone (1412) and the second cone (1421) are both narrow at the top and wide at the bottom, and the gap between the first cone (1412) and the second cone (1421) gradually increases from top to bottom; The mud separation assembly (4) includes a box (41) fixed on a connecting plate (14). A drive motor (42) is fixed on one side of the box (41). A spline sleeve (43) is rotatably embedded on the bottom wall of the box (41). A driven bevel gear (44) is fixedly sleeved on the outer side of the top of the spline sleeve (43). The driven bevel gear (44) is meshed with a drive bevel gear (45). The drive bevel gear (45) is fixedly connected to the output end of the drive motor (42). A spline shaft (46) is slidably sleeved in the middle of the spline sleeve (43). The top of the spline shaft (46) passes through the box (41) and is rotatably connected to the lifting beam (63). A stirring rod (47) is fixedly connected to the bottom end of the spline shaft (46). The bottom end of the stirring rod (47) extends into the first cone (1412) and is fixedly connected to an impeller (48).

2. The integrated wastewater treatment mechanism combining a mechanically accelerated clarifier and a water storage tank according to claim 1, characterized in that: The bottom of the separation tank (13) has a structure that is wider at the top and narrower at the bottom. A narrow gap is formed between the inner wall of the separation tank (13) and the first cone (1412). A sludge discharge pipe (15) is fixedly embedded at the lowest point of the separation tank (13). The bottom end of the sludge discharge pipe (15) passes through the industrial water storage tank (2) and is connected to a sludge discharge valve.

3. The integrated wastewater treatment mechanism combining a mechanically accelerated clarifier and a water storage tank according to claim 1, characterized in that: The buoyancy adjustment assembly (6) includes a buoyancy device (61) slidably sleeved on the inner wall of the industrial water storage tank (2) and a guide ring (64) fixed to the inner wall of the industrial water storage tank (2). At least two sliding rods (62) are fixed on the upper side of the buoyancy device (61), and a lifting beam (63) is fixedly connected between the top ends of the two sliding rods (62). The lifting beam (63) is located above the industrial clarification tank (1), and the sliding rods (62) and the guide ring (64) are slidably connected.

4. The integrated wastewater treatment mechanism combining a mechanically accelerated clarifier and a water storage tank according to claim 3, characterized in that: The water supply assembly (12) includes an inlet pipe (121) fixedly embedded in the bottom wall of the industrial clarification tank (1). The top end of the inlet pipe (121) extends into the interior of the first cone (1412). The bottom end of the inlet pipe (121) passes through the industrial water storage tank (2) and is connected to the sewage tank through the first flow regulating valve (122). A valve plate (123) is fixedly connected to the valve stem of the first flow regulating valve (122). A diagonal rod (124) is hinged to the valve plate (123). An adjusting plate (125) is hinged to the top end of the diagonal rod (124). The adjusting plate (125) is fixedly connected to the adjacent sliding rod (62).

5. The integrated wastewater treatment mechanism combining a mechanically accelerated clarifier and a water storage tank according to claim 3, characterized in that: The overflow regulating assembly (5) includes a notch (51) formed on the wall of the separation tank (13). A one-way valve disc (52) is hinged to one side of the notch (51). A first rotating seat (53) is rotatably connected to the upper side of the one-way valve disc (52). A cantilever (54) is hinged to one side of the first rotating seat (53). A second rotating seat (55) is hinged to the cantilever (54). The second rotating seat (55) is rotatably engaged with an adjacent sliding rod (62).

6. The integrated wastewater treatment mechanism combining a mechanically accelerated clarifier and a water storage tank according to claim 5, characterized in that: The one-way valve (52) can be flush with the wall of the separation tank (13), and its maximum opening and closing angle toward the axis of the separation tank (13) is 15°. The opening and closing direction of the one-way valve (52) is set opposite to the rotation direction of the impeller (48).

7. The integrated wastewater treatment mechanism combining a mechanically accelerated clarifier and a water storage tank according to claim 1, characterized in that: The industrial water storage tank (2) is provided with a drain pipe (21) on one side of the bottom. The drain pipe (21) is connected to a clear water tank through a second flow regulating valve (22). The bottom of the cofferdam (11) is provided with at least one guide pipe (111) connected to the industrial water storage tank (2). A third flow regulating valve (112) is installed on the guide pipe (111). The flow rate of the third flow regulating valve (112) is always greater than the flow rate of the second flow regulating valve (22).

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