Integrated high-efficiency coagulation and sedimentation device

Abstract

The application belongs to the field of water treatment equipment, and particularly relates to an integrated high-efficiency coagulation and sedimentation device. In view of the problems of large occupied area, low sedimentation efficiency, high operation and maintenance cost in the prior art, the application provides an integrated high-efficiency coagulation and sedimentation device. The coagulation device comprises a Venturi pipeline assembly, an isolation cylinder coaxially arranged between the Venturi pipeline assembly and a sedimentation cylinder, and an annular inclined plate settler fixedly connected coaxially between the isolation cylinder and the sedimentation cylinder. A rotating inner spiral blade is rotatably connected to the inside of the lower side of the sedimentation cylinder. The coagulation device adopts the principle of Venturi structure, has good coagulation effect, can form flocculating bodies with larger particle size and more stable morphology, and can further reduce flocculating impurities in the upward flow of sewage by cooperating with the inclined plate settler to speed up the sedimentation efficiency to the lower end of the sedimentation cylinder when the inner spiral blade rotates.

Description

Technical Field

[0001] This invention belongs to the field of water treatment equipment, specifically relating to an integrated high-efficiency coagulation and sedimentation device. Background Technology

[0002] Coagulation and sedimentation is a common operation unit in water treatment, often used for advanced wastewater treatment to remove pollutants such as suspended solids and organic matter from the water in order to meet the discharge standards for pollutants such as SS, COD, and TP.

[0003] Existing coagulation sedimentation processes often employ high-efficiency sedimentation tanks, whose main structure includes a mixing zone, sedimentation zone, separation zone, and external circulation of settled sludge. Pollutant removal is achieved through chemical mixing, contact flocculation, and shallow sedimentation. Based on high-efficiency sedimentation tanks, processes such as magnetic coagulation sedimentation tanks, sand-added sedimentation tanks, and loaded sedimentation tanks have been developed. These processes introduce single or composite heavy-density carriers as flocculants, controlling and increasing the density difference between solid and liquid, allowing the carriers, coagulants, and pollutants to flocculate and combine. Through electrochemical neutralization, adsorption bridging, and entrapment, and with the aid of heavy crystal nuclei to accelerate sedimentation, conventional pollutants (such as non-soluble COD, TP, SS, and turbidity) and particulate pollutants in the water are purified and removed, offering advantages such as good effluent quality and simple operation. However, existing high-efficiency sedimentation tanks require a large footprint due to their complex main structure. While magnetic coagulation sedimentation tanks, sand-added sedimentation tanks, and loaded sedimentation tanks have high surface loading, effectively reducing the footprint, the addition of heavy-density carriers increases construction, operating, and maintenance costs and complicates operating conditions.

[0004] Therefore, it is essential to research an integrated, high-efficiency coagulation and sedimentation device that has a small footprint, high processing efficiency, low construction, operation and maintenance costs, and simple operation. Summary of the Invention

[0005] In view of the above situation and to overcome the defects of the prior art, the present invention provides an integrated high-efficiency coagulation sedimentation device, which effectively solves the problems mentioned in the background art.

[0006] The technical solution adopted by the present invention to solve the above problems is as follows:

[0007] An integrated high-efficiency coagulation and sedimentation device includes a sedimentation cylinder, a coagulation device, an inlet device, a dosing device, and a sludge discharge device. The upper part of the sedimentation cylinder is a cylindrical structure with an open top and a hollow interior, and the lower end of the sedimentation cylinder is a conical structure. The output ends of the inlet device and the dosing device are respectively connected to the lower side of the coagulation device, and the sludge discharge device is connected to the bottom of the sedimentation cylinder.

[0008] The coagulation equipment includes a Venturi pipe assembly, and a vortex pipe and a water inlet pipe are coaxially fixedly connected below the Venturi pipe assembly from top to bottom. The water inlet equipment and the dosing equipment are respectively connected to the water inlet pipe.

[0009] An isolation cylinder is coaxially installed between the Venturi pipe assembly and the sedimentation tank. The upper end of the isolation cylinder is fixedly connected to the upper end of the sedimentation tank. An annular inclined plate sedimentation device is coaxially fixedly connected between the isolation cylinder and the sedimentation tank.

[0010] A rotating inner spiral blade is rotatably connected to the lower side of the sedimentation cylinder. The inner spiral blade rotates in the direction of downward conveying, and multiple filter holes are opened on the surface of the inner spiral blade.

[0011] Preferably, an inlet impeller is rotatably connected coaxially inside the inlet pipe, and a rotating plate is fixedly connected coaxially to the upper end of the inlet impeller. The rotating plate is rotatably connected to the inner wall of the inlet pipe. Multiple inlet holes distributed in a ring are opened on the surface of the rotating plate at non-center positions. Arc-shaped pipes with open ends are fixedly connected to the upper openings of the inlet holes. A vortex impeller is coaxially arranged inside the vortex pipe, and the vortex impeller is fixedly connected coaxially to the rotating plate.

[0012] Preferably, a rotating box is coaxially arranged at the lower end of the water inlet pipe, and a dosing box is rotatably connected to the upper end of the rotating box. The dosing equipment is connected to the dosing box, and the dosing box is fixedly connected to the inner wall of the water inlet pipe. Multiple dosing tubes distributed in a ring are evenly fixedly connected to the circumferential surface of the rotating box. A connecting shaft is fixedly connected to the middle of the upper end of the rotating box. The connecting shaft is rotatably connected to the dosing box, and the upper end of the connecting shaft is coaxially fixedly connected to the bottom of the water inlet impeller.

[0013] Preferably, the dosing tube has a dosing hole with openings at both ends inside, and a sliding groove is formed on the inner side of the dosing hole. A sealing plate is slidably connected to one end of the sliding groove near the rotating box. A valve core that meshes with the dosing hole is fixedly connected to one end of the sealing plate coaxially. Multiple connecting holes are formed on the surface of the sealing plate at non-central positions. A connecting rod is fixedly connected to the end of the sealing plate away from the valve core. A cross is slidably connected to the surface of the connecting rod. The cross is fixedly connected to the inner wall of the sliding groove. A counterweight wheel is fixedly connected to the other end of the connecting rod. A return spring is sleeved on the connecting rod portion between the cross and the sealing plate.

[0014] Preferably, the Venturi pipe assembly includes a first corrugated pipe and a second corrugated pipe arranged coaxially. The second corrugated pipe is located at the upper end of the first corrugated pipe. The bottom of the first corrugated pipe is fixedly connected to the upper end of the swirl pipe. A first mounting ring is rotatably connected between the first corrugated pipe and the second corrugated pipe. Limiting rods are slidably connected to the corresponding two sides of the first mounting ring. The upper and lower ends of the limiting rods are fixedly connected to the inner wall of the isolation cylinder. A second mounting ring is fixedly connected to the upper end of the second corrugated pipe. The corresponding two sides of the second mounting ring are fixedly connected to the limiting rods.

[0015] An inner cylinder is fixedly connected to the outer side of the inner spiral blade, and the inner cylinder is rotatably connected to the lower side of the sedimentation tank. A guide structure is connected between the inner cylinder and the first mounting ring. When the inner cylinder rotates under the transmission of the guide structure, it drives the first mounting ring to move up and down.

[0016] Preferably, the guiding structure includes a control cylinder fixedly connected to the lower end of the first mounting ring. The control cylinder is located outside the first bellows and is coaxially arranged with the first bellows. An annular wave groove is formed on the circumferential surface of the control cylinder. Guide plates are fixedly connected to the corresponding two sides of the upper end of the inner cylinder. Pins are fixedly connected to the inner side of the upper end of the guide plates, and the pins mesh with the annular wave grooves respectively.

[0017] Preferably, an end face gear is coaxially fixedly connected to the upper end of the inner cylinder, a drive gear meshes with the upper side of the end face gear, a gear shaft is fixedly connected to the center of the drive gear, the gear shaft is rotatably connected to the surface of the sedimentation cylinder, a drive motor is provided at the outer end of the gear shaft, the drive motor is fixedly connected to the surface of the sedimentation cylinder, and the output end of the drive motor is coaxially fixedly connected to the gear shaft.

[0018] Preferably, a gas collecting cylinder is coaxially disposed above the second corrugated pipe. The lower end of the gas collecting cylinder has an outwardly inclined trumpet-shaped structure and the lower end of the gas collecting cylinder does not contact the second corrugated pipe. The upper end of the gas collecting cylinder is fixedly connected to the upper end of the sedimentation cylinder.

[0019] Preferably, the inclined plate settler includes multiple annular inclined plates whose diameter increases sequentially from the inside to the outside and are nested together. Each annular inclined plate has a gap between it and does not contact each other. The upper end of the multiple annular inclined plates on the outer side is fixedly connected to a cross-shaped fixing frame, and the outer end of the cross-shaped fixing frame is fixedly connected to the inner wall of the settling cylinder. The lower inclined surface of each annular inclined plate is fixedly connected to multiple rectangular plates arranged in a ring. The other end of the rectangular plates does not contact the adjacent annular inclined plates on the inner side.

[0020] Preferably, an annular water collection weir is fixedly connected to the outer side of the upper end of the sedimentation cylinder, and the height of the outer end of the annular water collection weir is lower than that of the upper end of the sedimentation cylinder.

[0021] This invention has a novel structure, ingenious concept, and simple and convenient operation, and has the following advantages compared with the prior art:

[0022] 1. Employing micro-nano bubble technology, the cavitation and oxidation effects of micro-nano bubbles are fully utilized to oxidize and degrade some organic pollutants in wastewater, while also acting as a contact medium to enhance the flocculation process and provide the airlift power for the wastewater to rise.

[0023] 2. When sewage passes through the Venturi pipe assembly, each folded section of the Venturi pipe assembly has a contraction end and an expansion end, forming a multi-stage series Venturi structure. As the sewage passes through the Venturi structure, it continuously forms upflow and swirling flow, and then multiple vortex flow fields between the upflow and swirling flow. During the expansion and contraction of the first and second corrugated pipes, the sewage is continuously pressurized and released, continuously enhancing the mass transfer and mixing between the gas, solid and liquid phases, further improving the coagulation effect, and forming flocs with larger particle size and more stable morphology.

[0024] 3. When the inner spiral blades rotate, they cooperate with the inclined plate settler to improve the sedimentation effect of flocculants by blocking the rectangular plate inside the inclined plate settler. The settled flocculants fall into the range of the inner spiral blades and accelerate the sedimentation efficiency towards the lower end of the sedimentation cylinder under the rotation of the inner spiral blades, further reducing flocculent impurities in the upward flow of sewage. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of an integrated high-efficiency coagulation and sedimentation device according to the present invention.

[0026] Figure 2 This is a cross-sectional view of the sedimentation cylinder of an integrated high-efficiency coagulation sedimentation device according to the present invention.

[0027] Figure 3 This is a cross-sectional schematic diagram of the internal structure of the inlet pipe and vortex pipe of an integrated high-efficiency coagulation sedimentation device according to the present invention.

[0028] Figure 4 This is a schematic diagram of the arc-shaped tube and swirl impeller structure of an integrated high-efficiency coagulation sedimentation device according to the present invention.

[0029] Figure 5 This is a schematic diagram of the rotating plate and water inlet structure of an integrated high-efficiency coagulation sedimentation device according to the present invention.

[0030] Figure 6 This is a schematic diagram of the inlet impeller and dosing pipe structure of an integrated high-efficiency coagulation sedimentation device according to the present invention.

[0031] Figure 7 This is a cross-sectional schematic diagram of the connection structure between the rotating box and the dosing box of an integrated high-efficiency coagulation sedimentation device according to the present invention.

[0032] Figure 8This is a schematic diagram of the internal structure of the dosing pipe of an integrated high-efficiency coagulation and sedimentation device according to the present invention.

[0033] Figure 9 This is a schematic diagram of the guiding structure of an integrated high-efficiency coagulation sedimentation device according to the present invention.

[0034] Figure 10 This is a first schematic diagram of the inclined plate sedimentation tank structure of an integrated high-efficiency coagulation sedimentation device according to the present invention.

[0035] Figure 11 This is a second schematic diagram of the inclined plate sedimentation tank structure of an integrated high-efficiency coagulation sedimentation device according to the present invention.

[0036] In the diagram: 1-Sedimentation cylinder, 2-Water supply pipe, 3-Pressure pump, 4-Micro-nano bubble generator, 5-Inlet pipe, 6-Swirl pipe, 7-First corrugated pipe, 8-Second corrugated pipe, 9-Air collecting cylinder, 10-Control cylinder, 11-Annular corrugated groove, 12-Inner cylinder, 13-Inner spiral blade, 14-End face gear, 15-Drive gear, 16-Motor, 17-Guide plate, 18-Pin shaft, 19-Sludge discharge pipe, 20-Sludge discharge valve, 21-Sludge discharge pump, 22-Dosing pump, 23-Dosing pipe, 24-Swirl impeller, 25- 26-Arc-shaped pipe, 27-Rotating plate, 28-Water inlet hole, 29-Water inlet impeller, 30-Dosing box, 31-Dosing pipe, 32-Sealing plate, 33-Connecting hole, 34-Valve core, 35-Dosing hole, 36-Sliding groove, 37-Counterweight wheel, 38-Connecting rod, 39-Reset spring, 40-Limiting rod, 41-First mounting ring, 42-Second mounting ring, 43-Filter hole, 44-Inclined plate sedimentator, 45-Annular inclined plate, 46-Rectangular plate, 47-Support leg, 48-Annular water collection weir, 50-Isolation cylinder. Detailed Implementation

[0037] The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0038] like Figure 1-11 As shown, this invention provides an integrated high-efficiency coagulation and sedimentation device, including a sedimentation cylinder 1, a coagulation device, a water inlet device, a chemical dosing device, and a sludge discharge device. The upper part of the sedimentation cylinder 1 is a cylindrical structure with an open top and a hollow interior, and the lower end of the sedimentation cylinder 1 is a conical structure. Three evenly distributed support legs 47 are fixedly connected to the bottom of the sedimentation cylinder 1 to support the device. The conical structure is used to allow flocculents to settle and collect. The angle β between the inclined sidewall of the conical structure and the horizontal plane is 50° to ensure that the sludge hopper can achieve gravity sedimentation and facilitate the sludge discharge device to extract it. The output ends of the water inlet device and the chemical dosing device are respectively connected to the lower side of the coagulation device, and the sludge discharge device is connected to the bottom of the sedimentation cylinder 1.

[0039] The sludge removal equipment includes a sludge removal pipe 19 fixedly connected to and in communication with the bottom of the sedimentation tank 1, a sludge removal pump 21 located at the outlet of the sludge removal pipe 19, and a sludge removal valve 20 fixedly connected between the sludge removal pump 21 and the sludge removal pipe 19. The sludge removal pipe 19 serves as a sludge removal channel, and the sludge removal pump 21 generates suction to extract the accumulated flocculent material. The sludge removal valve 20 is used to open and close the sludge removal pipe 19, and can be opened and closed according to the user's needs.

[0040] The inlet equipment includes a pressurized water pump 3, two water supply pipes 2 connected to the outlet of the pressurized water pump 3, and micro / nano bubble generators 4 respectively installed on the water supply pipes 2. The outlets of the water supply pipes 2 are connected to coagulation equipment, and the inlet of the pressurized water pump 3 is connected to a sewage connection pipe. The sewage is pressurized by the pressurized water pump 3 and then enters the micro / nano bubble generator 4. The special structure of the micro / nano bubble generator 4 forms micro / nano bubbles, which dissolve in the water. Under the hydraulic cavitation oxidation effect of the high-velocity micro / nano bubbles, some organic pollutants in the water are oxidized and degraded. At the same time, the micro bubbles can act as a contact medium to enhance the flocculation process, allowing the micro / nano bubbles and flocs to undergo contact flocculation in the reactor, further forming small and firm flocs. Furthermore, the micro / nano bubbles can provide some of the upward power of the wastewater under the action of air lift. The dosing equipment includes a dosing pump 22 and a supply pipe 23 connected to the outlet of the dosing pump 22.

[0041] The coagulation equipment includes a Venturi pipe assembly for improving the coagulation effect of sewage. A vortex pipe 6 and an inlet pipe 5 are coaxially fixedly connected below the Venturi pipe assembly from top to bottom. The outlet of the water supply pipe 2 and the dosing device in the inlet equipment are fixedly connected to and connected to the inlet pipe 5.

[0042] An isolation cylinder 50 is coaxially arranged between the Venturi pipe assembly and the sedimentation tank 1. A spacer layer exists between the isolation cylinder 50 and the Venturi pipe assembly, forming a water passage. The upper end of the isolation cylinder 50 is fixedly connected to the upper end of the sedimentation tank 1. Figure 2As shown, the upper end of the isolation cylinder 50 is higher than the upper end of the Venturi pipe assembly. After overflowing from the upper end of the Venturi pipe assembly, wastewater can enter the lower part of the isolation cylinder 50 through the water passage. The lower part of the isolation cylinder 50 is a mud-water separation zone, used to allow flocculants to settle below the isolation cylinder 50, forming mud-water separation. A ring-shaped inclined plate settler 44 is coaxially fixed between the isolation cylinder 50 and the sedimentation cylinder 1, and the upper end of the isolation cylinder 50 is higher than the upper end of the sedimentation cylinder 1. The inclined plate settler 44 utilizes the principle of shallow sedimentation, through... The inclined plate increases the surface area and reduces the depth of the sewage flow during its ascent, which shortens the settling distance of particles, thereby reducing the settling time and improving the treatment efficiency. This allows the treated water or wastewater and the settled sludge to move and separate in the shallow sedimentation layer, thus achieving the purpose of purifying the water quality. The flocculent material that settles when the sewage passes through the inclined plate settler 44 settles on the surface of the inclined plate and is deposited at the bottom of the sludge-water separation zone under the influence of gravity, which is the conical structure at the lower end of the sedimentation cylinder 1, facilitating the discharge of sludge by the sludge discharge equipment.

[0043] To further improve the sedimentation efficiency of flocs, a rotating inner spiral blade 13 is rotatably connected to the lower side of the sedimentation cylinder 1. The inner spiral blade 13 rotates in the downward conveying direction. Multiple filter holes 43 are opened on the surface of the inner spiral blade 13. The filter holes 43 are used to filter flocs and facilitate the flow of sewage. When the inner spiral blade 13 rotates, the sewage rises through the filter holes 43. The flocs are blocked by the filter holes 43 and are conveyed to the lower end of the sedimentation cylinder 1 under the rotation of the inner spiral blade 13. In cooperation with the inclined plate settler 44, the settled flocs fall into the range of the inner spiral blade 13 under the action of the inclined plate settler 44. The rotation of the inner spiral blade 13 accelerates the sedimentation efficiency to the lower end of the sedimentation cylinder 1, further reducing the floc impurities in the sewage rise. This allows the inner spiral blade 13 and the Venturi pipe assembly to keep synchronized, which facilitates user operation and allows the sewage to maintain stable and orderly coagulation and sedimentation.

[0044] An inlet impeller 28 is rotatably connected coaxially inside the water inlet pipe 5. A rotating plate 26 is fixedly connected coaxially to the upper end of the inlet impeller 28. The rotating plate 26 is rotatably connected to the inner wall of the water inlet pipe 5. Multiple annularly distributed water inlet holes 27 are opened on the surface of the rotating plate 26 at non-central positions. Arc-shaped pipes 25 with openings at both ends are fixedly connected to the upper openings of the water inlet holes 27. A vortex impeller 24 is coaxially arranged inside the vortex pipe 6. The vortex impeller 24 is fixedly connected coaxially to the rotating plate 26. Figure 3As shown, sewage enters the inlet pipe 5 through the water supply pipe 2. Due to the high water pressure from the booster pump 3, the sewage enters the inlet pipe 5 and, under the impact of the water flow, drives the inlet impeller 28 to rotate rapidly, which in turn drives the rotating plate 26 to rotate, causing multiple arc-shaped pipes 25 and vortex impellers 24 to rotate synchronously. Furthermore, the blades on the surface of the inlet impeller 28 are inclined, which pushes the water flow upwards during rotation. Thus, when the inlet impeller 28 rotates rapidly under the impact of the water flow, it pushes the sewage to form a high-pressure upward flow within the inlet pipe 5. As the upward flow enters the inlet hole 27, the inlet diameter of the inlet hole 27 is smaller than the inner diameter of the inlet pipe 5, which reduces the inlet size of the upward flow of sewage. This leads to a further increase in water pressure, causing the sewage to enter the vortex pipe 6 in a jet-outward manner when passing through the arc-shaped pipe 25, forming a vortex. This is beneficial for the coagulation of flocs. Then, under the rotation of the vortex impeller 24, the flow is rapidly accelerated and rises with the increase in water volume, forming an upward vortex. During the sewage flow, this accelerates the contact flocculation of flocs in the sewage, further improving the coagulation effect of the flocs.

[0045] A rotating box 30 is coaxially mounted at the lower end of the inlet pipe 5. A dosing box 29 is rotatably connected to the upper end of the rotating box 30. The dosing box 29 is fixedly connected to the inner wall of the inlet pipe 5. The dosing supply pipe 23 of the dosing equipment is connected to the dosing box 29. The dosing pump 22 is connected to an external dosing equipment, and the dosing agent enters the dosing box 29 through the supply pipe 23 under the delivery of the dosing pump 22. The dosing agent is PAC, PAM, etc., which are selected according to the actual situation. Multiple dosing pipes 31 are evenly fixedly connected to the circumferential surface of the rotating box 30 in a ring. A connecting shaft is fixedly connected to the middle of the upper end of the rotating box 30. The connecting shaft is rotatably connected to the dosing box 29. The upper end of the connecting shaft is coaxially fixedly connected to the bottom of the inlet impeller 28. When the inlet impeller 28 rotates, the rotating box 30 is driven to rotate by the connecting shaft. The rotating box 30 rotates rapidly with the inlet impeller 28. The internal reagent is ejected through the dosing pipe 31 under centrifugal force and mixed with the external sewage. Then, under the attraction of the upward flow formed by the rotation of the inlet impeller 28, it flows with the sewage and is further mixed. When the sewage passes through the arc-shaped pipe 25, it is sprayed out in a rotating oblique state under the push of water pressure, forming a vortex, which provides the power basis for the vortex reaction of sewage. At the same time, the reagent is fully mixed. Then, under the rotation of the vortex impeller 24, the sewage and reagent form an upward vortex motion along the axis. During the vortex coagulation reaction, the sewage and reagent are fully mixed, and the microbubbles in the wastewater fully play the role of contact medium and participate in the flocculation reaction of suspended particles in the sewage. Through the collision and adhesion between the bubbles and the suspended particles in the water, the contact flocculation of microbubbles, sewage and reagent is accelerated. With the participation of microbubbles, a floc structure with strong shear resistance and compact structure is formed.

[0046] Furthermore, to prevent wastewater from entering the dosing pipe 31 and causing pesticide loss, the dosing pipe 31 has a dosing hole 35 with openings at both ends. A sliding groove 36 is formed on the inner side of the dosing hole 35. A sealing plate 32 is slidably connected to one end of the sliding groove 36 near the rotating box 30. A valve core 34, which engages with the dosing hole 35, is coaxially fixed to one end of the sealing plate 32. Multiple connecting holes 33 are formed on the surface of the sealing plate 32 at non-central positions to facilitate pesticide flow. The sealing plate 32 has multiple connecting holes 33 at its distal positions. A connecting rod 38 is fixedly connected to one end of the valve core 34. A cross is slidably connected to the surface of the connecting rod 38. The cross is fixedly connected to the inner wall of the sliding groove 36. A counterweight wheel 37 is fixedly connected to the other end of the connecting rod 38. The counterweight wheel 37 is used to increase inertia and enhance the tendency of the sealing plate 32 to move outward under the action of centrifugal force when the dosing tube 31 rotates, thereby increasing centrifugal force. The surface of the counterweight wheel 37 has multiple openings to facilitate the flow of medicine. The connecting rod 38 between the cross and the sealing plate 32 is fitted with a... The return spring 39 pushes the sealing plate 32 to engage the valve core 34 with the dosing hole 35, blocking the dosing hole 35 and forming a one-way channel. With the valve core 34 engaged with the dosing hole 35, the medication cannot enter the rotating box 30. The centrifugal force generated when the rotating box 30 rotates can carry the medication into the dosing tube 31. Under the action of centrifugal force, the sealing plate 32 overcomes the resistance of the return spring 39 and moves outward, causing the valve core 34 to disengage from the dosing hole 35. The medication then... Under the action of the dosing pipe 31, the chemical enters the sewage. The rotation speed of the rotating box 30 is controlled according to the water flow rate, thereby controlling the dosage. Since the dosing pipe 31 is in a state of rapid rotation, the centrifugal force generated can prevent sewage from entering the sewage. When the rotation power of the rotating box 30 weakens, it cannot overcome the elastic force of the return spring 39. The return spring 39 can then push the sealing plate 32 to reset, so that the valve core 34 engages with the dosing hole 35. This can effectively prevent sewage from entering the rotating box 30 and causing the chemical to be lost.

[0047] like Figure 3As shown, the Venturi pipe assembly includes a first corrugated pipe 7 and a second corrugated pipe 8 arranged coaxially. The second corrugated pipe 8 is located at the upper end of the first corrugated pipe 7. The bottom of the first corrugated pipe 7 is fixedly connected to the upper end of the vortex pipe 6, forming a state where the bottom of the first corrugated pipe 7 cannot move and the upper end of the second corrugated pipe 8 cannot move. The first corrugated pipe 7 and the second corrugated pipe 8 are connected by interconnected foldable corrugated sheets along the folding and expansion direction. Each folded section has a contraction end and an expansion end, forming a multi-stage series Venturi structure. When sewage flows, the water flow decreases and the water pressure increases when passing through the contraction end. When passing through the expansion section, the water flow increases and the water pressure decreases. When sewage passes through the Venturi structure, it continuously forms an upward flow and a swirling flow, and then multiple vortex flow fields between the upward flow and the swirling flow. In the flow state of each stage of the Venturi structure pipe, the mass transfer and mixing between the gas, solid and liquid phases are continuously enhanced, further improving the coagulation effect and forming flocs with larger particle size and more stable morphology.

[0048] Furthermore, to improve the flocculation effect of the Venturi pipe assembly, the interconnected foldable corrugated sheets on the inner sides of the first corrugated pipe 7 and the second corrugated pipe 8 change their inner diameter at the tip of each fold during the stretching and folding process. When the first corrugated pipe 7 contracts downward, the second corrugated pipe 8 is in a stretched state, and when the first corrugated pipe 7 is stretched upward, the second corrugated pipe 8 is in a contracted state. Whenever the first corrugated pipe 7 contracts, it can increase the water pressure during the internal sewage flow and increase the pressure of the swirling flow. When the first corrugated pipe 7 contracts, the second corrugated pipe 8 extends, thereby accelerating the upward flow. When the first corrugated pipe 7 extends, the second corrugated pipe 8 contracts, and the swirling flow pressurized by the first corrugated pipe 7 can rise rapidly and enter the second corrugated pipe 8 to form a swirling flow and be pressurized again. During the expansion and contraction process of the first corrugated pipe 7 and the second corrugated pipe 8, the sewage is continuously pressurized and released, further enhancing the mass transfer and mixing effect between the gas, solid, and liquid phases.

[0049] A first mounting ring 41 is rotatably connected between the first corrugated pipe 7 and the second corrugated pipe 8. Limiting rods 40 are slidably connected to the corresponding two sides of the first mounting ring 41. The upper and lower ends of the limiting rods 40 are fixedly connected to the inner wall of the isolation cylinder 50. The limiting rods 40 are used to limit the first mounting ring 41, so that the first corrugated pipe 7 can be stably extended and retracted, and the second corrugated pipe 8 can be stably pulled to extend and retract. A second mounting ring 42 is fixedly connected to the upper end of the second corrugated pipe 8. The corresponding two sides of the second mounting ring 42 are fixedly connected to the limiting rods 40.

[0050] An inner cylinder 12 is fixedly connected to the outer side of the inner spiral blade 13. The inner cylinder 12 is rotatably connected to the lower inner side of the sedimentation cylinder 1. A guide structure is connected between the inner cylinder 12 and the first mounting ring 41. When the inner cylinder 12 rotates under the transmission of the guide structure, it drives the first mounting ring 41 to move up and down. When the first mounting ring 41 moves up and down, it can drive the first bellows 7 to extend and retract.

[0051] like Figure 9 As shown, the guiding structure includes a control cylinder 10 fixedly connected to the lower end of the first mounting ring 41. The control cylinder 10 is located outside the first bellows 7 and is coaxially arranged with the first bellows 7. An annular wave groove 11 is formed on the circumferential surface of the control cylinder 10. Guide plates 17 are fixedly connected to the corresponding sides of the upper end of the inner cylinder 12. Pins 18 are fixedly connected to the inner side of the upper end of the guide plates 17, and the pins 18 mesh with the annular wave groove 11 respectively. When the inner cylinder 12 rotates, the guide plates 17 drive the pins 18 to rotate synchronously. When the pins 18 rotate, the sliding engagement between the pins 18 and the annular wave groove 11 can drive the control cylinder 10 to move axially, thereby driving the first mounting ring 41 to rise and fall, forming the effect of controlling the extension and retraction of the first bellows 7; and in the inner cylinder 1 2. During the rotation, the first corrugated pipe 7 is extended and retracted, which is beneficial for the orderly coagulation and sedimentation of sewage in the sedimentation cylinder 1. Furthermore, in order to facilitate the control of the rotation of the inner cylinder 12, an end face gear 14 is coaxially fixedly connected to the upper end of the inner cylinder 12. A drive gear 15 is meshed on the upper side of the end face gear 14. A gear shaft is fixedly connected to the center of the drive gear 15. The gear shaft is rotatably connected to the surface of the sedimentation cylinder 1. A drive motor 16 is provided at the outer end of the gear shaft. The drive motor 16 is fixedly connected to the surface of the sedimentation cylinder 1. The output end of the drive motor 16 is coaxially fixedly connected to the gear shaft. When the drive motor 16 is started, the drive gear 15 is driven to rotate through the transmission of the gear shaft. Under the meshing of the drive gear 15 and the end face gear 14, the inner cylinder 12 is rotated, which is convenient for the user to control.

[0052] A gas collecting cylinder 9 is coaxially arranged above the second corrugated pipe 8. The lower end of the gas collecting cylinder 9 has an outwardly inclined trumpet-shaped structure and the lower end of the gas collecting cylinder 9 does not contact the second corrugated pipe 8. This increases the collection range without affecting the sewage overflow. The upper end of the gas collecting cylinder 9 is fixedly connected to the upper end of the sedimentation cylinder 1. When the sewage in the Venturi pipe assembly rises and overflows through the upper end of the second corrugated pipe 8, the gas in the sewage is collected through the gas collecting cylinder 9 and released into the atmosphere.

[0053] Furthermore, to improve the sedimentation effect of flocculants after the wastewater passes through the inclined plate settler 44, the inclined plate settler 44 includes multiple annular inclined plates 45 with diameters increasing sequentially from the inside to the outside and nested together. Each annular inclined plate 45 has a gap between it and does not contact each other, allowing wastewater to flow. The upper end of the outer annular inclined plates 45 is fixedly connected to a cross-shaped fixing frame, and the outer end of the cross-shaped fixing frame is fixedly connected to the inner wall of the sedimentation cylinder 1. The lower inclined surface of each annular inclined plate 45 is fixedly connected to multiple rectangular plates 46 arranged in a ring. The other end of the rectangular plates 46 does not contact the adjacent inner annular inclined plates 45. When the wastewater passes through the gaps between the annular inclined plates 45, the rectangular plates 46 can block the flocculants in the wastewater, thereby further improving the sedimentation efficiency and effect of the flocculants.

[0054] Furthermore, to reduce impurities in the wastewater, an annular water collection weir 48 is fixedly connected to the outer side of the upper end of the sedimentation cylinder 1. The outer end of the annular water collection weir 48 is lower than the upper end of the sedimentation cylinder 1. When the wastewater flows upward through the annular sedimentator, it overflows outward through the upper end of the sedimentation cylinder 1 and enters the annular water collection weir 48 for accumulation. The annular water collection weir 48 can further provide sedimentation space for the wastewater. After the wastewater enters the annular water collection weir 48, the residual flocculent impurities in the wastewater undergo further sedimentation inside the annular water collection weir 48. During the wastewater accumulation process, the supernatant in the wastewater overflows through the upper end of the annular water collection weir 48, and the flocculents undergo further sedimentation inside the annular water collection weir 48, thus fully improving the wastewater sedimentation effect.

[0055] Working principle:

[0056] During operation, the influent water is pressurized by the pressurized water pump 3 and then enters the micro-nano bubble generator 4. The special structure of the micro-nano bubble generator 4 forms micro-nano bubbles, which dissolve in the water. Under the hydraulic cavitation oxidation effect of the high-velocity micro-nano bubbles, some organic pollutants in the water are oxidized and degraded. At the same time, the micro-bubbles can act as a contact medium to enhance the flocculation process, allowing the micro-nano bubbles and flocs to undergo contact flocculation in the reactor, further forming small and firm flocs. Furthermore, the micro-nano bubbles can provide some of the upward momentum for the wastewater under the airlift effect, after which the wastewater enters the influent pipe 5 through the water delivery pipe 2.

[0057] After the wastewater enters the inlet pipe 5, it drives the inlet impeller 28 to rotate. The rotation of the inlet impeller 28 creates an upward flow of wastewater, simultaneously causing the rotating box 30 to rotate. This causes the chemical agent, under centrifugal force, to enter the wastewater through the dosing pipe 31. Attracted by the upward flow, the chemical agent mixes with the wastewater and enters the vortex pipe 6 through the arc-shaped pipe 25 in a rotating, oblique manner. Simultaneously, the rotation of the vortex impeller 24 creates an upward vortex, resulting in a vortex coagulation reaction. The wastewater and chemical agent move upwards along the axis. During the vortex coagulation reaction, the wastewater and chemical agent are thoroughly mixed, and the microbubbles in the wastewater are abundant. The microbubbles play a crucial role in the flocculation reaction of suspended particles in wastewater. Through the collision and adhesion between the microbubbles and the suspended particles in the water, the contact flocculation of microbubbles, wastewater, and chemicals is accelerated. With the participation of microbubbles, a highly shear-resistant and tightly structured floc structure is formed. The floc then rises into the Venturi pipe assembly, where a multi-stage series of contraction and expansion Venturi structures are formed. Under the action of the Venturi structure, the mass transfer and mixing between the gas, solid, and liquid phases are continuously enhanced, further improving the coagulation effect and forming flocs with larger particle size and more stable morphology.

[0058] Then, the wastewater enters the sedimentation tank 1 below the isolation tank 50 through the water passage into the mud-water separation zone below. The gas in the water is discharged through the top gas collection tank 9. The wastewater continuously gathers below the sedimentation tank 1 and then rises. Under the action of the inclined plate sedimentator 44, the flocculents are accelerated to settle, and under the filtration and transportation of the inner spiral plate 13, they are accelerated to settle into the conical structure of the sedimentation tank 1. Then, the sludge is periodically discharged through the sludge discharge equipment. The wastewater overflowing from the top of the sedimentation tank 1 enters the annular water collection weir 48. After settling again through the annular water collection weir 48, the supernatant produced overflows from the top of the annular water collection weir 48 and undergoes subsequent treatment.

[0059] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. An integrated high-efficiency coagulation and sedimentation device, comprising a sedimentation tank (1), coagulation equipment, water inlet equipment, dosing equipment, and sludge discharge equipment, characterized in that: The upper part of the sedimentation cylinder (1) is a cylindrical structure with an open top and a hollow interior, and the lower part of the sedimentation cylinder (1) is a cone-shaped structure. The output ends of the water inlet device and the dosing device are respectively connected to the lower side of the coagulation device, and the sludge discharge device is connected to the bottom of the sedimentation cylinder (1). The coagulation equipment includes a Venturi pipe assembly, and a vortex pipe (6) and an inlet pipe (5) are coaxially fixedly connected below the Venturi pipe assembly from top to bottom. The inlet equipment and the dosing equipment are respectively connected to the inlet pipe (5). An isolation cylinder (50) is coaxially arranged between the Venturi pipe assembly and the sedimentation cylinder (1). The upper end of the isolation cylinder (50) is fixedly connected to the upper end of the sedimentation cylinder (1). An annular inclined plate sedimentation tank (44) is coaxially fixedly connected between the isolation cylinder (50) and the sedimentation cylinder (1). A rotating inner spiral blade (13) is rotatably connected to the lower side of the sedimentation cylinder (1). The inner spiral blade (13) rotates along the downward conveying direction, and multiple filter holes (43) are opened on the surface of the inner spiral blade (13). An inlet impeller (28) is rotatably connected coaxially inside the inlet pipe (5). A rotating plate (26) is fixedly connected coaxially at the upper end of the inlet impeller (28). The rotating plate (26) is rotatably connected to the inner wall of the inlet pipe (5). Multiple inlet holes (27) are provided in a ring-shaped distribution on the non-center position of the surface of the rotating plate (26). Arc-shaped pipes (25) with openings at both ends are fixedly connected to the upper opening of the inlet holes (27). A swirl impeller (24) is coaxially arranged inside the swirl pipe (6). The swirl impeller (24) is fixedly connected coaxially to the rotating plate (26). A rotating box (30) is coaxially arranged at the lower end of the water inlet pipe (5). A dosing box (29) is rotatably connected to the upper end of the rotating box (30). The dosing equipment is connected to the dosing box (29). The dosing box (29) is fixedly connected to the inner wall of the water inlet pipe (5). Multiple dosing tubes (31) are evenly fixedly connected to the circumferential surface of the rotating box (30). A connecting shaft is fixedly connected to the middle of the upper end of the rotating box (30). The connecting shaft is rotatably connected to the dosing box (29). The upper end of the connecting shaft is coaxially fixedly connected to the bottom of the water inlet impeller (28). The Venturi pipe assembly includes a first corrugated pipe (7) and a second corrugated pipe (8) arranged coaxially. The second corrugated pipe (8) is located at the upper end of the first corrugated pipe (7). The bottom of the first corrugated pipe (7) is fixedly connected to the upper end of the swirl pipe (6). A first mounting ring (41) is rotatably connected between the first corrugated pipe (7) and the second corrugated pipe (8). Limiting rods (40) are slidably connected to the corresponding two sides of the first mounting ring (41). The upper and lower ends of the limiting rods (40) are fixedly connected to the inner wall of the isolation cylinder (50). A second mounting ring (42) is fixedly connected to the upper end of the second corrugated pipe (8). The corresponding two sides of the second mounting ring (42) are fixedly connected to the limiting rods (40). An inner cylinder (12) is fixedly connected to the outer side of the inner spiral blade (13). The inner cylinder (12) is rotatably connected to the lower inner side of the sedimentation cylinder (1). A guide structure is connected between the inner cylinder (12) and the first mounting ring (41). When the inner cylinder (12) rotates under the transmission of the guide structure, it drives the first mounting ring (41) to move up and down. The guiding structure includes a control cylinder (10) fixedly connected to the lower end of the first mounting ring (41). The control cylinder (10) is located outside the first bellows (7) and is coaxially arranged with the first bellows (7). An annular wave groove (11) is opened on the circumferential surface of the control cylinder (10). Guide plates (17) are fixedly connected to the corresponding sides of the upper end of the inner cylinder (12). Pins (18) are fixedly connected to the inner side of the upper end of the guide plates (17). The pins (18) mesh with the annular wave groove (11). An end face gear (14) is fixedly connected to the upper end of the inner cylinder (12) on the same axis. A drive gear (15) meshes with the upper side of the end face gear (14). A gear shaft is fixedly connected to the center of the drive gear (15). The gear shaft is rotatably connected to the surface of the sedimentation cylinder (1). A drive motor (16) is provided at the outer end of the gear shaft. The drive motor (16) is fixedly connected to the surface of the sedimentation cylinder (1). The output end of the drive motor (16) is fixedly connected to the gear shaft on the same axis.

2. The integrated high-efficiency coagulation and sedimentation device as described in claim 1, characterized in that: The dosing tube (31) has a dosing hole (35) with openings at both ends. A sliding groove (36) is provided on the inner side of the dosing hole (35). A sealing plate (32) is slidably connected to one end of the sliding groove (36) near the rotating box (30). A valve core (34) that meshes with the dosing hole (35) is coaxially fixedly connected to one end of the sealing plate (32). Multiple connecting holes (33) are provided on the surface of the sealing plate (32) at non-center positions. A connecting rod (38) is fixedly connected to one end of the sealing plate (32) away from the valve core (34). A cross is slidably connected to the surface of the connecting rod (38). The cross is fixedly connected to the inner wall of the sliding groove (36). A counterweight wheel (37) is fixedly connected to the other end of the connecting rod (38). A return spring (39) is sleeved on the part of the connecting rod (38) between the cross and the sealing plate (32).

3. The integrated high-efficiency coagulation and sedimentation device as described in claim 1, characterized in that: A gas collecting cylinder (9) is coaxially arranged above the second corrugated pipe (8). The lower end of the gas collecting cylinder (9) is a trumpet-shaped structure that is inclined outward and the lower end of the gas collecting cylinder (9) does not contact the second corrugated pipe (8). The upper end of the gas collecting cylinder (9) is fixedly connected to the upper end of the sedimentation cylinder (1).

4. The integrated high-efficiency coagulation and sedimentation device as described in claim 1, characterized in that: The inclined plate precipitator (44) includes multiple annular inclined plates (45) with diameters increasing sequentially from the inside to the outside and nested together. Each annular inclined plate (45) has a gap between them and does not contact each other. The upper end of the multiple annular inclined plates (45) on the outer side is fixedly connected to a cross-shaped fixing frame, and the outer end of the cross-shaped fixing frame is fixedly connected to the inner wall of the precipitator (1). The lower inclined surface of each annular inclined plate (45) is fixedly connected to multiple rectangular plates (46) arranged in a ring. The other end of the rectangular plate (46) does not contact the adjacent annular inclined plate (45) on the inner side.

5. The integrated high-efficiency coagulation and sedimentation device as described in claim 1, characterized in that: An annular water collection weir (48) is fixedly connected to the outer side of the upper end of the sedimentation cylinder (1), and the height of the outer end of the annular water collection weir (48) is lower than the upper end of the sedimentation cylinder (1).

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