Integrated efficient coagulating sedimentation device

Abstract

The invention belongs to the field of water treatment equipment, particularly relates to an integrated efficient coagulating sedimentation device, and provides the integrated efficient coagulating sedimentation device aiming at the problems of large occupied area, low sedimentation efficiency and high operation and maintenance cost in the prior art. An isolation cylinder is coaxially arranged between the Venturi pipeline assembly and the precipitation cylinder, and an annular inclined plate precipitator is coaxially and fixedly connected between the isolation cylinder and the precipitation cylinder; the lower side of the interior of the precipitation cylinder is rotationally connected with a rotating inner spiral sheet; the coagulation equipment adopts a Venturi structure principle, has a good coagulation effect, can form floccules with larger particle sizes and more stable forms, accelerates the efficiency of precipitation towards the lower end of the precipitation barrel through cooperation with the inclined plate precipitator when the inner spiral piece rotates, and further reduces flocculate impurities in sewage upwelling.

Description

Technical Field

[0001] The invention belongs to the field of water treatment equipment, and in particular relates to an integrated high-efficiency coagulation and sedimentation device. Background Art

[0002] Coagulation and sedimentation is a common operation unit in the water treatment process. It is often used for deep treatment of wastewater to remove suspended solids, organic matter and other pollutants in the water to meet the emission standards of pollutants such as SS, COD and TP.

[0003] The main structure of the high-efficiency sedimentation tank commonly used in the existing coagulation and sedimentation process includes a mixing zone, a sedimentation zone, a separation zone, and an extracorporeal circulation and reflux of the sedimentation sludge, etc., and the removal of pollutants is achieved by utilizing the working principles of dosing mixing, contact flocculation and shallow pool sedimentation. Based on the high-efficiency sedimentation tank, the magnetic coagulation sedimentation tank, the sand-added sedimentation tank, the loading sedimentation tank and other processes have been upgraded and developed successively. By introducing a single or composite heavy-density carrier as a flocculant, the density difference between the solid and the liquid is increased, so that the carrier and the coagulant (coagulant) and the pollutants are flocculated and combined with each other, and the conventional pollutants (such as insoluble COD, TP, SS, turbidity) and particulate pollutants in the water are purified and removed through the effects of electrical neutralization, adsorption bridging, net capture and the acceleration of precipitation with the help of heavy crystal nuclei, which has the advantages of good water discharge effect and simple operation. However, the existing high-efficiency sedimentation tank needs to occupy a large area due to the large number of main structures. Although the magnetic coagulation sedimentation tank, the sand-added sedimentation tank and the loading sedimentation tank have high surface loads and have effectively reduced the area occupied, the addition of heavy-density carriers also makes the construction, operation and maintenance costs higher and the operation conditions more complicated.

[0004] Therefore, it is very necessary to study an integrated high-efficiency coagulation and sedimentation device with small footprint, high treatment efficiency, low construction, operation and maintenance costs, and simple operation. Summary of the invention

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

[0006] In order to solve the above problems, the technical solution adopted by the present invention is:

[0007] An integrated high-efficiency coagulation and sedimentation device comprises a sedimentation cylinder, a coagulation device, a water inlet device, a dosing device and a mud discharge device. The upper part of the sedimentation cylinder is a cylindrical structure with an upper end opening and a hollow interior, and the lower end of the sedimentation cylinder 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 mud discharge device is connected to the bottom of the sedimentation cylinder.

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

[0009] An isolation cylinder is coaxially arranged between the venturi pipe assembly and the settling cylinder, the upper end of the isolation cylinder is fixedly connected to the upper end of the settling cylinder, and an annular inclined plate settler is coaxially fixedly connected between the isolation cylinder and the settling cylinder;

[0010] The lower side of the sedimentation cylinder is rotatably connected to a rotating inner spiral sheet, which rotates along the downward conveying direction, and a plurality of filtering holes are provided on the surface of the inner spiral sheet.

[0011] Preferably, the water inlet pipe is coaxially rotatably connected to a water inlet impeller inside, the upper end of the water inlet impeller is coaxially fixedly connected to a rotating plate, the rotating plate is rotatably connected to the inner wall of the water inlet pipe, a plurality of water inlet holes distributed in an annular manner are respectively opened at non-center positions on the surface of the rotating plate, and arc-shaped tubes with openings at both ends are respectively fixedly connected to the upper openings of the water inlet holes; a swirl impeller is coaxially arranged inside the swirl pipe, and the swirl impeller is coaxially fixedly connected to the rotating plate.

[0012] Preferably, a rotating box is coaxially provided at the inner lower end of the water inlet pipe, a dosing box is rotatably connected to the upper end of the rotating box, the dosing device is connected to the dosing box, the dosing box is fixedly connected to the inner wall of the water inlet pipe, a plurality of dosing tubes distributed in an annular shape are evenly fixedly connected to the circumferential surface of the rotating box, a connecting shaft is fixedly connected to the middle part 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, a dosing hole with openings at both ends is provided inside the dosing tube, a sliding groove is provided on the inner side of the dosing hole, a closing plate is slidably connected to one end of the sliding groove close to the rotating box, a valve core meshing with the dosing hole is coaxially fixedly connected to one end of the closing plate, and a plurality of connecting holes are provided at non-center positions on the surface of the closing plate; a connecting rod is fixedly connected to one end of the closing 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, and a reset spring is sleeved on the connecting rod portion between the cross and the closing plate.

[0014] Preferably, the Venturi pipe assembly comprises a first bellows and a second bellows arranged coaxially, the second bellows is located at the upper end of the first bellows, the bottom of the first bellows is fixedly connected to the upper end of the swirl pipe, a first mounting ring is rotatably connected between the first bellows and the second bellows, the corresponding two sides of the first mounting ring are respectively slidably connected to the limit rod, the upper and lower ends of the limit rod are respectively fixedly connected to the inner wall of the isolation tube, the upper end of the second bellows is fixedly connected to the second mounting ring, and the corresponding two sides of the second mounting ring are respectively fixedly connected to the limit rod;

[0015] An inner cylinder is fixedly connected to the outer side of the inner spiral sheet, and the inner cylinder is rotatably connected to the inner lower side of the sedimentation cylinder; a guide structure is connected between the inner cylinder and the first mounting ring, and when the inner cylinder rotates under the transmission of the guide structure, the first mounting ring is driven to move up and down.

[0016] Preferably, the guide structure includes a control cylinder fixedly connected to the lower end of the first mounting ring, the control cylinder is located on the outside of the first bellows and is coaxially arranged with the first bellows, an annular wave groove is provided on the circumferential surface of the control cylinder, and guide plates are fixedly connected on both sides corresponding to the upper end of the inner cylinder, and pins are fixedly connected on the inner sides of the upper ends of the guide plates, and the pins are respectively engaged with the annular wave grooves.

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

[0018] Preferably, a gas collecting cylinder is coaxially arranged above the second corrugated pipe, the lower end of the gas collecting cylinder is a trumpet-shaped structure inclined outward and does not contact the second corrugated pipe, and 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 comprises a plurality of annular inclined plates whose diameters increase successively from the inside to the outside and are nested with each other, a spacing space is left between each annular inclined plate so as not to contact each other, the upper ends of the outer annular inclined plates are fixedly connected to a cross fixing frame, and the outer end of the cross fixing frame is fixedly connected to the inner wall of the sedimentation cylinder; the lower end inclined surface of each annular inclined plate is fixedly connected to a plurality of rectangular plates distributed in an annular shape, and the other end of the rectangular plate does not contact the adjacent annular inclined plate on the inner side.

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

[0021] The present invention has novel structure, ingenious design, simple and convenient operation, and has the following advantages compared with the prior art:

[0022] 1. Adopt micro-nano bubble technology to give full play to the cavitation oxidation effect of micro-nano bubbles, oxidize and degrade some organic pollutants in sewage, play the role of contact medium, strengthen the flocculation process, and provide air lift power for sewage to rise;

[0023] 2. When the 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. When the sewage passes through the Venturi structure, an upflow and a rotation flow are continuously formed, and then multiple vortex flow fields are formed between the upflow and the rotation flow. When the first bellows and the second bellows are in the process of expansion and contraction, the sewage is continuously pressurized and released, and the mass transfer and mixing between the gas, solid and liquid phases are continuously enhanced, and the coagulation effect is further improved to form floccules with larger particle size and more stable morphology;

[0024] 3. When the inner spiral blade rotates, it cooperates with the inclined plate sedimentation tank to improve the sedimentation effect of the flocculants under the obstruction of the rectangular plate inside the inclined plate sedimentation tank. The precipitated flocculants fall into the range of the inner spiral blade, and the efficiency of sedimentation to the lower end of the sedimentation cylinder is accelerated under the rotation of the inner spiral blade, further reducing the flocculants and impurities in the rising flow of sewage. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0026] Figure 2 The present invention is a cross-sectional structural diagram of the interior of a sedimentation cylinder of an integrated high-efficiency coagulation and sedimentation device.

[0027] Figure 3 The present invention is a schematic cross-sectional view of the internal structure of a water inlet pipe and a cyclone pipe of an integrated high-efficiency coagulation and sedimentation device.

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

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

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

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

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

[0033] Fig. 9 It is a schematic diagram of the guiding structure of an integrated high-efficiency coagulation and sedimentation device of the present invention.

[0034] Fig.10 This is the first schematic diagram of the inclined plate sedimentation vessel structure of an integrated high-efficiency coagulation and sedimentation device of the present invention.

[0035] Fig.11 This is the second schematic diagram of the inclined plate sedimentation vessel structure of an integrated high-efficiency coagulation and sedimentation device of the present invention.

[0036] In the figure: 1-sedimentation cylinder, 2-water delivery pipe, 3-pressure water pump, 4-micro-nano bubble generator, 5-water inlet pipe, 6-swirl pipe, 7-first corrugated pipe, 8-second corrugated pipe, 9-gas collecting cylinder, 10-control cylinder, 11-annular wave groove, 12-inner cylinder, 13-inner spiral sheet, 14-end gear, 15-driving gear, 16-motor, 17-guide plate, 18-pin shaft, 19-mud discharge pipe, 20-mud discharge valve, 21-mud discharge pump, 22-dosing pump, 23-drug supply pipe, 24-swirl impeller, 25- Arc tube, 26-rotating plate, 27-water inlet hole, 28-water inlet impeller, 29-dosing box, 30-rotating box, 31-dosing tube, 32-closing plate, 33-connecting hole, 34-valve core, 35-dosing hole, 36-sliding groove, 37-counterweight wheel, 38-connecting rod, 39-reset spring, 40-limit rod, 41-first mounting ring, 42-second mounting ring, 43-filter hole, 44-inclined plate precipitator, 45-annular inclined plate, 46-rectangular plate, 47-support leg, 48-annular water collecting weir, 50-isolation cylinder. DETAILED DESCRIPTION

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

[0038] like Figure 1-11 As shown, the present invention provides an integrated high-efficiency coagulation and sedimentation device, including a sedimentation cylinder 1, a coagulation device, a water inlet device, a dosing device and a mud discharge device. The upper part of the sedimentation cylinder 1 is a cylindrical structure with an upper end opening and a hollow interior, and the lower end of the sedimentation cylinder 1 is a cone-shaped structure. Three evenly distributed legs 47 are fixedly connected to the bottom of the sedimentation cylinder 1 for supporting the device. The cone-shaped structure is used to precipitate and collect flocculants. The angle β between the side wall slope of the cone-shaped structure and the horizontal plane is 50° to ensure that the mud bucket can be precipitated by gravity, which is convenient for the mud discharge device to be drawn out; 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 mud discharge device is connected to the bottom of the sedimentation cylinder 1;

[0039] The mud discharge device includes a mud discharge pipe 19 fixedly connected to and communicated with the bottom of the sedimentation cylinder 1, a mud discharge pump 21 located at the outlet of the mud discharge pipe 19, and a mud discharge valve 20 fixedly connected between the mud discharge pump 21 and the mud discharge pipe 19. The mud discharge pipe 19 serves as a mud discharge channel, and the accumulated flocculants are extracted by the suction force generated by the mud discharge pump 21. The mud discharge valve 20 is used to open and close the mud discharge pipe 19, and can be opened and closed according to the needs of the user.

[0040] The water inlet equipment includes a pressurized water pump 3, two water pipes 2 connected to the water outlet of the pressurized water pump 3, and micro-nano bubble generators 4 respectively installed on the water pipes 2. The water outlets of the water pipes 2 are respectively connected to the coagulation equipment, and the water inlet of the pressurized water pump 3 is connected to the sewage connecting pipe. The sewage is pressurized by the pressurized water pump 3, and the inlet water enters the micro-nano bubble generator 4 after being pressurized by the pressurized water pump 3. Micro-nano bubbles are formed by the special structure of the micro-nano bubble generator 4. The formed micro-nano bubbles are dissolved in the water. Under the hydraulic cavitation oxidation of the high-flow micro-nano bubbles, some organic pollutants in the wastewater are oxidized and degraded; at the same time, the micro-bubbles can play the role of contact medium, strengthen the flocculation process, so that the micro-nano bubbles and floccules are contacted and flocculated in the reactor, and further small and firm flocs are formed; further, the micro-nano bubbles can provide part of the wastewater with rising power under the action of air lift; the dosing equipment includes a dosing pump 22 and a drug supply pipe 23 connected to the drug outlet of the dosing pump 22;

[0041] The coagulation equipment includes a Venturi pipe assembly, which is used to improve the coagulation effect of sewage. The lower part of the Venturi pipe assembly is coaxially fixedly connected with a swirl pipe 6 and a water inlet pipe 5 from top to bottom. The water outlet of the water delivery pipe 2 in the water inlet equipment and the dosing equipment are respectively fixedly connected and connected to the water inlet pipe 5.

[0042] An isolation cylinder 50 is coaxially arranged between the Venturi pipe assembly and the sedimentation cylinder 1. A spacer layer is provided between the isolation cylinder 50 and the Venturi pipe assembly to form a water passage. The upper end of the isolation cylinder 50 is fixedly connected to the upper end of the sedimentation cylinder 1. Figure 2As shown, the upper end of the isolation cylinder 50 is higher than the upper end of the Venturi pipe assembly. After the sewage overflows from the upper end of the Venturi pipe assembly, it 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 area, which is used to make the flocculants settle below the isolation cylinder 50 to form mud-water separation. An annular inclined plate settler 44 is coaxially fixedly connected 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 uses the principle of shallow sedimentation to When the inclined plate is tilted, the area of ​​the sewage rising flow is increased and its depth is reduced, which can shorten the sedimentation distance of the particles, thereby reducing the sedimentation time and improving the treatment efficiency, so that the treated water or wastewater and the settled sludge move and separate from each other in the shallow sedimentation, thereby achieving the purpose of purifying the water quality; the flocculants precipitated when the sewage passes through the inclined plate sedimentator 44 are precipitated on the surface of the inclined plate, and are deposited at the bottom of the mud-water separation area under the influence of gravity, that is, in the cone-shaped structure at the lower end of the sedimentation cylinder 1, so as to facilitate the discharge of the mud discharge equipment;

[0043] In order to further improve the sedimentation efficiency of the flocculants, a rotating inner spiral piece 13 is rotatably connected to the lower side of the sedimentation cylinder 1. The inner spiral piece 13 rotates along the downward conveying direction. A plurality of filter holes 43 are provided on the surface of the inner spiral piece 13. The filter holes 43 are used to filter the flocculants and facilitate the circulation of sewage. When the inner spiral piece 13 rotates, the sewage rises through the filter holes 43, and the flocculants 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 piece 13. Moreover, through cooperation with the inclined plate sedimentator 44, the precipitated flocculants fall into the range of the inner spiral piece 13 under the action of the inclined plate sedimentator 44, and the efficiency of sedimentation to the lower end of the sedimentation cylinder 1 is accelerated under the rotation of the inner spiral piece 13, further reducing the flocculant impurities in the sewage rise flow, so that the inner spiral piece 13 and the Venturi pipe assembly can be kept synchronized, which can facilitate the user's operation while keeping the sewage stably and orderly for coagulation and sedimentation.

[0044] The water inlet pipe 5 is coaxially connected to a water inlet impeller 28 for rotation, and the upper end of the water inlet impeller 28 is coaxially fixedly connected to a rotating plate 26, which is rotatably connected to the inner wall of the water inlet pipe 5. A plurality of water inlet holes 27 distributed in an annular pattern are respectively provided at non-center positions on the surface of the rotating plate 26, and arc-shaped tubes 25 with openings at both ends are respectively fixedly connected to the upper end openings of the water inlet holes 27; a swirl impeller 24 is coaxially arranged inside the swirl pipe 6, and the swirl impeller 24 is coaxially fixedly connected to the rotating plate 26; Figure 3As shown, sewage enters the water inlet pipe 5 through the water delivery pipe 2. Since the sewage has a relatively high water pressure under the pressure of the pressure pump 3, the sewage can be driven to rotate rapidly in the water inlet pipe 5 under the impact of the water flow, thereby driving the rotating plate 26 to rotate, so that the multiple arc tubes 25 and the swirl impeller 24 rotate synchronously; and the blades on the surface of the water inlet impeller 28 are in an inclined state, which can push the water flow upward when rotating, and then the water inlet impeller 28 can push the sewage to form a high-pressure upward flow in the water inlet pipe 5 when it rotates rapidly under the impact of the water flow, and the sewage In the process of the upward flow entering the water inlet hole 27, since the aperture of the water inlet hole 27 is smaller than the inner diameter of the water inlet pipe 5, the water inlet of the sewage upward flow is reduced, resulting in further increase in water pressure, so that the sewage enters the vortex pipe 6 in a state of being sprayed outward when passing through the arc pipe 25, and forms a vortex, which is beneficial to the coagulation of flocculants. Then, under the rotation of the vortex impeller 24, it rotates rapidly and rises with the increase of water volume, forming an upward vortex, which accelerates the contact flocculation of flocculants in the sewage during the circulation of the sewage, and further improves the coagulation effect of the flocculants.

[0045] A rotating box 30 is coaxially arranged at the lower end of the water inlet pipe 5, and 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 water inlet pipe 5, and the drug supply pipe 23 in the dosing device is connected to the dosing box 29. The dosing pump 22 is connected to the external drug supply device, and enters the dosing box 29 through the drug supply pipe 23 under the transportation of the dosing pump 22. The dosing agent is PAC, PAM, etc., and the dosing agent is selected according to the actual situation; the circumferential surface of the rotating box 30 is evenly and fixedly connected with a plurality of dosing tubes 31 distributed in an annular shape, and a connecting shaft is fixedly connected to the middle part of the upper end of the rotating box 30, and 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; when the water inlet impeller 28 rotates, the rotating box 30 is driven to rotate under the transmission of the connecting shaft, and the rotating box 30 rotates rapidly with the water inlet impeller 28 At this time, the internal medicine is thrown out through the dosing pipe 31 under the action of centrifugal force and mixed with the external sewage. Then, it circulates with the sewage under the attraction of the upward flow formed when the water inlet impeller 28 rotates, and is further mixed. When the sewage passes through the arc tube 25, it is pushed by the water pressure and ejected in a rotating oblique state to form a vortex, which provides a power basis for the sewage to form a vortex reaction. At the same time, the medicine is fully mixed. Then, under the rotation of the vortex impeller 24, the sewage and the medicine form an upward vortex motion along the axis; in the vortex coagulation reaction process, the sewage and the medicine are fully mixed, and the microbubbles in the wastewater give full play to the role of the contact medium and participate in the flocculation reaction of the suspended particles in the sewage. Through the collision and adhesion between the bubbles and the suspended particles in the water, the contact flocculation of the microbubbles, sewage and the medicine is accelerated, and with the participation of the microbubbles, a flocculent structure with strong shear resistance and tight structure is formed.

[0046] Furthermore, in order to prevent sewage from entering the dosing pipe 31 and causing the loss of medicine, a dosing hole 35 with two ends opened is provided inside the dosing pipe 31, and a sliding groove 36 is provided inside the dosing hole 35. The end of the sliding groove 36 close to the rotating box 30 is slidably connected to a closing plate 32, and one end of the closing plate 32 is coaxially fixedly connected to a valve core 34 engaged with the dosing hole 35. A plurality of connecting holes 33 are respectively provided at non-center positions on the surface of the closing plate 32, and the connecting holes 33 are used to facilitate the circulation of medicine; the distal end of the closing plate 32 is provided with a valve core 34 meshed with the dosing hole 35. One end of the valve core 34 is fixedly connected to a connecting rod 38, and 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. The other end of the connecting rod 38 is fixedly connected to a counterweight wheel 37. The counterweight wheel 37 is used to increase inertia, improve the dynamic tendency of the closing plate 32 to move outward under the action of centrifugal force when the dosing tube 31 rotates, and increase the centrifugal force. A plurality of openings are provided on the surface of the counterweight wheel 37 to facilitate the circulation of the medicine; the connecting rod 38 between the cross and the closing plate 32 is partially sleeved with The return spring 39 is used to push the closing plate 32 to make the valve core 34 mesh with the dosing hole 35, block the dosing hole 35, and form a one-way channel. When the valve core 34 is meshed with the dosing hole 35, the medicine cannot enter the rotating box 30. The centrifugal force generated when the rotating box 30 rotates can drive the medicine into the dosing tube 31, and under the action of the centrifugal force, the closing plate 32 overcomes the resistance of the return spring 39 and moves outward, so that the valve core 34 is out of mesh with the dosing hole 35. The medicine is Under the action of the dosing pipe 31, the dosing pipe 31 enters the sewage. The rotation speed of the rotating box 30 is controlled according to the flow rate of the water flow, thereby controlling the dosage of the dosing pipe 31. Since the dosing pipe 31 is in a state of rapid rotation, the centrifugal force generated can prevent the sewage from entering the sewage. When the rotation power of the rotating box 30 is weakened, the elastic force of the return spring 39 cannot be overcome. The return spring 39 can push the closing plate 32 to return to its original position, so that the valve core 34 is engaged with the dosing hole 35, which can effectively prevent the sewage from entering the rotating box 30 and causing the loss of the medicine.

[0047] like Figure 3As shown, the Venturi pipe assembly includes a first bellows 7 and a second bellows 8 which are coaxially arranged. The second bellows 8 is located at the upper end of the first bellows 7. The bottom of the first bellows 7 is fixedly connected to the upper end of the swirl pipe 6, forming a state in which the bottom of the first bellows 7 cannot move and the upper end of the second bellows 8 cannot move. The first bellows 7 and the second bellows 8 are connected by mutually connected foldable corrugated sheets along the folding and telescopic direction. Each folding section has a contraction end and an expansion end, respectively, forming a multi-stage series Venturi structure. When the sewage flows through the contraction end, the water flow decreases and the water pressure increases. When the sewage passes through the expansion section, the water flow increases and the water pressure decreases. When the sewage passes through the Venturi structure, an upflow and a swirl flow are continuously formed, and then multiple vortex flow fields are formed between the upflow and the swirl flow. In the flow state of each level of the Venturi structure tube, the mass transfer and mixing between the gas, solid and liquid phases are continuously enhanced, and the coagulation effect is further improved to form a flocculent with a larger particle size and a more stable morphology.

[0048] Furthermore, in order to improve the effect of the Venturi pipe assembly on the coagulation of flocs, the interconnected foldable corrugated sheets on the inner side of the first bellows 7 and the second bellows 8 change in the process of stretching and folding, and the inner diameter of each folded tip changes accordingly. When the first bellows 7 contracts downward, the second bellows 8 is in a stretched state, and when the first bellows 7 is stretched upward, the second bellows 8 forms a contracted state; whenever the first bellows 7 contracts, the water pressure of the internal sewage during circulation can be increased, and the pressure of the rotating flow can be increased. When the first bellows 7 contracts, the second bellows 8 stretches, thereby accelerating the upward flow. When the first bellows 7 stretches, the second bellows 8 contracts, and the rotating flow pressurized by the first bellows 7 can rise rapidly, and after entering the second bellows 8, a rotating flow is formed and pressurized again. When the first bellows 7 and the second bellows 8 are in the process of expansion and contraction, 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 bellows 7 and the second bellows 8, and the corresponding two sides of the first mounting ring 41 are respectively slidably connected to the limiting rod 40, and the upper and lower ends of the limiting rod 40 are respectively fixedly connected to the inner wall of the isolation tube 50. The limiting rod 40 is used to limit the first mounting ring 41, so that the first bellows 7 can be stably extended and retracted, and conveniently and stably pull the second bellows 8 to extend and retract, and the upper end of the second bellows 8 is fixedly connected to the second mounting ring 42, and the corresponding two sides of the second mounting ring 42 are respectively fixedly connected to the limiting rod 40;

[0050] An inner cylinder 12 is fixedly connected to the outer side of the inner spiral sheet 13, and the inner cylinder 12 is rotatably connected to the inner lower side of the sedimentation cylinder 1; a guide structure is connected between the inner cylinder 12 and the first mounting ring 41, and 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, and when the first mounting ring 41 moves up and down, it can drive the first bellows 7 to extend and retract.

[0051] like Fig. 9 As shown, the guide structure includes a control cylinder 10 fixedly connected to the lower end of the first mounting ring 41, the control cylinder 10 is located on the outside of the first bellows 7 and is coaxially arranged with the first bellows 7, an annular wave groove 11 is provided on the circumferential surface of the control cylinder 10, and the corresponding two sides of the upper end of the inner cylinder 12 are respectively fixedly connected with guide plates 17, and the inner sides of the upper ends of the guide plates 17 are respectively fixedly connected with pins 18, and the pins 18 are respectively engaged with the annular wave grooves 11; when the inner cylinder 12 rotates, the pins 18 are driven by the guide plates 17 to perform synchronous circumferential rotation, and when the pins 18 rotate circumferentially, the control cylinder 10 can be driven to undergo axial displacement through the sliding cooperation between the pins 18 and the annular wave grooves 11, thereby driving the first mounting ring 41 to rise and fall, thereby forming an effect of controlling the first bellows 7 to extend and retract; and in the inner cylinder 1 2 During the rotation, the first bellows 7 is driven to expand and contract, which is beneficial to orderly coagulation and sedimentation of sewage in the sedimentation cylinder 1; further, in order to facilitate the control of the inner cylinder 12 to rotate, the upper end of the inner cylinder 12 is coaxially fixedly connected with an end gear 14, and the upper side of the end gear 14 is meshed with a driving gear 15, the center position of the driving gear 15 is fixedly connected with a gear shaft, the gear shaft is rotatably connected to the surface of the sedimentation cylinder 1, and the outer end of the gear shaft is provided with a driving motor 16, the driving motor 16 is fixedly connected to the surface of the sedimentation cylinder 1, and the output end of the driving motor 16 is coaxially fixedly connected to the gear shaft. When the driving motor 16 is started, the driving gear 15 is driven to rotate under the transmission of the gear shaft, and the inner cylinder 12 is driven to rotate under the meshing of the driving gear 15 and the end gear 14, which is convenient for users to control.

[0052] A gas collecting cylinder 9 is coaxially arranged above the second bellows 8. The lower end of the gas collecting cylinder 9 is a trumpet-shaped structure inclined outward and the lower end of the gas collecting cylinder 9 does not contact the second bellows 8, which 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 rising flow of sewage in the Venturi pipe assembly overflows through the upper end of the second bellows 8, the gas in the sewage is collected by the gas collecting cylinder 9 and released into the atmosphere.

[0053] Furthermore, in order to improve the sedimentation effect of flocs after the sewage passes through the inclined plate settler 44, the inclined plate settler 44 includes a plurality of annular inclined plates 45 whose diameters increase from the inside to the outside and are mutually nested, and a spacing space is left between each annular inclined plate 45 so as not to contact each other, which is used for sewage circulation. The upper ends of the plurality of annular inclined plates 45 on the outer side are fixedly connected with a cross fixing frame, and the outer ends of the cross fixing frame are fixedly connected with the inner wall of the sedimentation cylinder 1; the lower end inclined surface of each annular inclined plate 45 is respectively fixedly connected with a plurality of rectangular plates 46 distributed in an annular shape, and the other end of the rectangular plate 46 does not contact the adjacent annular inclined plate 45 on the inner side. When the sewage passes through the gap between the annular inclined plates 45, the rectangular plate 46 can block the flocs in the sewage, thereby further improving the sedimentation efficiency and sedimentation effect of the flocs.

[0054] Furthermore, in order to reduce impurities in sewage, an annular weir 48 is fixedly connected to the outer side of the upper end of the sedimentation cylinder 1. The outer end height of the annular weir 48 is lower than the upper end of the sedimentation cylinder 1. When the sewage rises through the annular settler, it overflows outward through the upper end of the sedimentation cylinder 1 and enters the annular weir 48 for aggregation. The annular weir 48 can further provide sedimentation space for the sewage. After the sewage enters the annular weir 48, the flocculant impurities remaining in the sewage are further precipitated in the annular weir 48. In the process of sewage aggregation, the supernatant in the sewage overflows through the upper end of the annular weir 48, and the flocculants are further precipitated inside the annular weir 48, thereby fully improving the sewage sedimentation effect.

[0055] Working principle:

[0056] When the device is in use, the incoming water is pressurized by the pressure water pump 3 and then enters the micro-nano bubble generator 4. The micro-nano bubbles are formed by the special structure of the micro-nano bubble generator 4. The formed micro-nano bubbles are dissolved in the water. Under the hydraulic cavitation oxidation of the micro-nano bubbles with a high flow rate, part of the organic pollutants in the wastewater are oxidized and degraded. At the same time, the micro-bubbles can play the role of contact medium, strengthen the flocculation process, and make the micro-nano bubbles and flocculants contact and flocculate in the reactor to further form small and firm flocs. Furthermore, the micro-nano bubbles can provide part of the wastewater with rising power under the action of air lift, and then the sewage enters the water inlet pipe 5 through the water pipe 2.

[0057] After the sewage enters the water inlet pipe 5, it drives the water inlet impeller 28 to rotate. When the water inlet impeller 28 rotates, it drives the sewage to generate an upward flow, and at the same time drives the rotating box 30 to rotate so that the medicine enters the sewage through the dosing pipe 31 under the action of centrifugal force, mixes with the sewage under the attraction of the upward flow, and enters the cyclone pipe 6 in a rotating oblique state through the arc pipe 25. When the cyclone is formed, an upward cyclone is formed under the rotation of the cyclone impeller 24, and a cyclone coagulation reaction occurs. The sewage and the medicine move upward along the axis. During the cyclone coagulation reaction, the sewage and the medicine are fully mixed, and the microbubbles in the wastewater are filled. The air bubbles play the role of contact medium and participate in the flocculation reaction of suspended particles in sewage. Through the collision and adhesion between bubbles and suspended particles in water, the contact flocculation of microbubbles, sewage and reagents is accelerated. With the participation of microbubbles, a flocculent structure with strong shear resistance and tight structure is formed, and then it rises into the Venturi pipe assembly. A multi-stage series contraction and expansion Venturi structure is formed in the Venturi pipe assembly. Under the action of the Venturi structure, the sewage continuously enhances the mass transfer and mixing between gas, solid and liquid phases, further improves the coagulation effect, and forms floccules with larger particle size and more stable morphology.

[0058] After that, it enters the mud-water separation area below the sedimentation cylinder 1 below the isolation cylinder 50 through the water passage, and the gas in the water body is discharged through the top gas collecting cylinder 9; the sewage is continuously gathered below the sedimentation cylinder 1 and then rises, and the flocculants are precipitated faster under the action of the inclined plate settler 44, and are filtered and transported by the inner spiral blade 13 to be precipitated into the cone-shaped structure of the sedimentation cylinder 1, and then the sludge is discharged regularly through the sludge discharge equipment, and the sewage overflowing from the upper end of the sedimentation cylinder 1 enters the annular water collecting weir 48, and the supernatant produced after another sedimentation through the annular water collecting weir 48 overflows from the upper end of the annular water collecting weir 48 and enters the subsequent treatment stage.

[0059] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An integrated high-efficiency coagulation and sedimentation device, comprising a sedimentation cylinder (1), a coagulation device, a water inlet device, a dosing device and a mud discharge device, characterized in that: The upper part of the sedimentation cylinder (1) is a cylindrical structure with an open upper end and a hollow interior, the lower end 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 mud discharge device is connected to the bottom of the sedimentation cylinder (1); The coagulation equipment comprises a Venturi pipe assembly, and a swirl pipe (6) and a water inlet pipe (5) are coaxially fixedly connected to the bottom of the Venturi pipe assembly in sequence from top to bottom, and the water inlet equipment and the dosing equipment are respectively connected to the water inlet pipe (5); An isolation cylinder (50) is coaxially arranged between the Venturi pipe assembly and the settling cylinder (1); the upper end of the isolation cylinder (50) is fixedly connected to the upper end of the settling cylinder (1); and an annular inclined plate settler (44) is coaxially fixedly connected between the isolation cylinder (50) and the settling cylinder (1); A rotating inner spiral sheet (13) is rotatably connected to the lower inner side of the sedimentation cylinder (1). The inner spiral sheet (13) rotates along a downward conveying direction. A plurality of filtering holes (43) are provided on the surface of the inner spiral sheet (13).

2. An integrated high-efficiency coagulation and sedimentation device as claimed in claim 1, characterized in that: The water inlet pipe (5) is coaxially rotatably connected to a water inlet impeller (28), the upper end of the water inlet impeller (28) is coaxially fixedly connected to a rotating plate (26), the rotating plate (26) is rotatably connected to the inner wall of the water inlet pipe (5), a plurality of water inlet holes (27) distributed in an annular pattern are respectively provided at non-center positions on the surface of the rotating plate (26), and arc-shaped tubes (25) with openings at both ends are respectively fixedly connected to the upper end openings of the water inlet holes (27); a swirl impeller (24) is coaxially arranged inside the swirl pipe (6), and the swirl impeller (24) is coaxially fixedly connected to the rotating plate (26).

3. An integrated high-efficiency coagulation and sedimentation device as claimed in claim 2, characterized in that: A rotating box (30) is coaxially arranged at the lower end of the water inlet pipe (5), and a dosing box (29) is rotatably connected to the upper end of the rotating box (30). The dosing device is connected to the dosing box (29), and the dosing box (29) is fixedly connected to the inner wall of the water inlet pipe (5). A plurality of dosing tubes (31) distributed in an annular shape 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), and 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).

4. An integrated high-efficiency coagulation and sedimentation device as claimed in claim 3, characterized in that: The dosing tube (31) is provided with 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 closing plate (32) is slidably connected to one end of the sliding groove (36) close to the rotating box (30), a valve core (34) meshing with the dosing hole (35) is coaxially fixedly connected to one end of the closing plate (32), and a plurality of connecting holes (33) are respectively provided at non-center positions on the surface of the closing plate (32); a connecting rod (38) is fixedly connected to one end of the closing 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), the other end of the connecting rod (38) is fixedly connected to a counterweight wheel (37), and a return spring (39) is sleeved on the connecting rod (38) between the cross and the closing plate (32).

5. The integrated high-efficiency coagulation and sedimentation device according to claim 1, characterized in that: The venturi pipe assembly comprises a first bellows (7) and a second bellows (8) which are coaxially arranged, the second bellows (8) being located at the upper end of the first bellows (7), the bottom of the first bellows (7) being fixedly connected to the upper end of the swirl pipe (6), a first mounting ring (41) being rotatably connected between the first bellows (7) and the second bellows (8), the corresponding two sides of the first mounting ring (41) being slidably connected to the limit rod (40), the upper and lower ends of the limit rod (40) being fixedly connected to the inner wall of the isolation cylinder (50), the upper end of the second bellows (8) being fixedly connected to the second mounting ring (42), the corresponding two sides of the second mounting ring (42) being fixedly connected to the limit rod (40); An inner cylinder (12) is fixedly connected to the outer side of the inner spiral sheet (13), and the inner cylinder (12) is rotatably connected to the inner lower side of the sedimentation cylinder (1); a guide structure is connected between the inner cylinder (12) and the first mounting ring (41), and when the inner cylinder (12) rotates under the transmission of the guide structure, the first mounting ring (41) is driven to move up and down.

6. An integrated high-efficiency coagulation and sedimentation device as claimed in claim 5, characterized in that: The guide structure comprises 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 provided on the circumferential surface of the control cylinder (10); guide plates (17) are fixedly connected to the corresponding two sides of the upper end of the inner cylinder (12); pin shafts (18) are fixedly connected to the inner sides of the upper ends of the guide plates (17); the pin shafts (18) are respectively engaged with the annular wave grooves (11).

7. An integrated high-efficiency coagulation and sedimentation device as claimed in claim 5, characterized in that: The upper end of the inner cylinder (12) is coaxially fixedly connected with an end face gear (14), the upper side of the end face gear (14) is meshed with a driving gear (15), the center position of the driving gear (15) is fixedly connected with a gear shaft, the gear shaft is rotatably connected to the surface of the sedimentation cylinder (1), the outer end of the gear shaft is provided with a driving motor (16), the driving motor (16) is fixedly connected to the surface of the sedimentation cylinder (1), and the output end of the driving motor (16) is coaxially fixedly connected with the gear shaft.

8. The integrated high-efficiency coagulation and sedimentation device according to claim 5, characterized in that: A gas collecting cylinder (9) is coaxially arranged above the second bellows (8); the lower end of the gas collecting cylinder (9) is a trumpet-shaped structure inclined outward and does not contact the second bellows (8); the upper end of the gas collecting cylinder (9) is fixedly connected to the upper end of the sedimentation cylinder (1).

9. The integrated high-efficiency coagulation and sedimentation device according to claim 1, characterized in that: The inclined plate settler (44) comprises a plurality of annular inclined plates (45) whose diameters increase from the inside to the outside and are mutually sleeved, and a spacing space is left between each of the annular inclined plates (45) so as not to contact each other. The upper ends of the annular inclined plates (45) on the outside are fixedly connected to a cross fixing frame, and the outer ends of the cross fixing frame are fixedly connected to the inner wall of the settling cylinder (1); the lower end inclined surface of each annular inclined plate (45) is fixedly connected to a plurality of rectangular plates (46) distributed in an annular shape, and the other end of the rectangular plate (46) does not contact the adjacent annular inclined plate (45) on the inside.

10. The integrated high-efficiency coagulation and sedimentation device according to claim 1, characterized in that: An annular water collecting 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 collecting weir (48) is lower than the upper end of the sedimentation cylinder (1).

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