Rotational flow reinforced flocculation reactor structure

Abstract

The invention relates to the field of water treatment equipment, in particular to a rotational flow reinforced flocculation reactor structure which comprises an outer cylinder and an inner cylinder arranged on the inner side of the outer cylinder, the bottom of the inner cylinder is open, the outer cylinder forms a lower deposition area on the lower side of the inner cylinder, the inner cylinder is communicated with a feeding pipe, and the outer cylinder is communicated with an upper slag discharging pipe in the lower deposition area. A water outlet is formed in the upper section of the outer cylinder; the upper section of the inner cylinder forms a pre-flocculation section, the lower section of the inner cylinder forms a reinforced flocculation section, and a mature flocculation area is formed between the outer cylinder and the inner cylinder; a pre-cyclone piece is arranged on the inner side of the pre-flocculation section, and a reinforced cyclone piece is arranged on the reinforced flocculation section; the inner circulation area of the pre-flocculation section is smaller than that of the enhanced flocculation section, and the circulation cross-sectional area of the mature flocculation area is larger than that of the enhanced flocculation section. According to the rotary coagulation reactor, the structure of the rotary coagulation reactor is optimally designed, so that the problems in the prior art are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of water treatment equipment, and more particularly to a structure for a cyclone-enhanced flocculation reactor. Background Technology

[0002] Flocculation in wastewater refers to the process of adding flocculants during wastewater treatment, which causes suspended particles in the wastewater to aggregate and form flocs, accelerating their settling. Currently, common structures for flocculation reactors include multi-cell series perforated flocculation tanks and multi-stage vertical shaft vortex grid flocculation. Multi-cell series perforated flocculation tanks tend to accumulate sludge at the bottom and often occupy a large area, thus limiting their applicability. Multi-stage vertical shaft vortex grid flocculation, on the other hand, utilizes the spiral motion of water flow within a vertical shaft. The shearing and collision effects created by the water flow's own kinetic energy promote the contact and aggregation of particles in the water. It requires no external energy and occupies a small area, therefore its application is gradually increasing.

[0003] Currently, existing vortex grid flocculant structures are mostly as described in the utility model patent application No. 201420660705.1 (hereinafter referred to as D1), which discloses a micro-vortex enhanced coagulation decentralized sewage treatment device, and the invention patent application No. 202310746234.X (hereinafter referred to as D2), which discloses a clarifier and a water purifier. Currently, existing vortex flocculation reactors often employ multi-layered cylindrical structures to effectively utilize the reactor's height, promoting flocculation in different cylindrical layers.

[0004] As shown in D1, the multi-stage flocculation reactor has two layers of flocculation reaction grids, inner and outer. In this type of flocculation reactor, when water flows from bottom to top through the inner flocculation grid, the water flow velocity is generally fast (greater than or equal to 0.4 m / s) to promote the upward flow of flocs. Some flocs that are easy to sink (containing impurities such as silt) are easily sheared and broken during the upward impact of the water flow, thereby slowing down the formation of flocs. In addition, in the area where the inner and outer grids are connected, the water flow direction changes from the upward swirling flow of the inner grid to the downward flow into the outer grid. Combined with the backflow effect of the top wall of the inner cylinder, the water flow direction at the inlet of the outer grid changes frequently, forming a rapid turbulent flow. Some light flocs are pushed upward by the water flow to the edge area and then sink to the outer grid. When they sink to the outer grid, they are further broken by the secondary impact of the rapid turbulent flow at the outer grid. Therefore, the flocs need to be flocculated and aggregated again at the outer grid. It is easy to see that this type of flocculant structure causes multiple disruptions to the flocculants throughout the water flow path, resulting in low actual utilization efficiency of the entire water flow path.

[0005] The clarifier and water purifier shown in D2 have the same problem as shown in D1. They also have a baffle at the bottom of the second reaction chamber. As the water flows around the baffle from the large area of ​​the second reaction chamber, the speed increases, causing some small flocs and light flocs to be carried to the upper part of the separation chamber. The fast water flow also impacts the downward-moving flocs, resulting in a higher concentration of small flocs in the upper part of the separation chamber. This makes it easier for some small flocs to move upward and be discharged through the annular conduit.

[0006] Therefore, this application proposes a swirl-enhanced flocculation reactor structure to solve the problems existing in the prior art. Summary of the Invention

[0007] To address the aforementioned technical problems, this invention provides a cyclone-enhanced flocculation reactor structure. By optimizing the structure of the cyclone reactor, the problems existing in the prior art are effectively solved.

[0008] To address the aforementioned technical problems, this invention provides a cyclone-enhanced flocculation reactor structure, comprising an outer cylinder and an inner cylinder disposed inside the outer cylinder. The bottom of the inner cylinder is open. The outer cylinder forms a lower deposition region below the inner cylinder. The inner cylinder is connected to a feed pipe, and the outer cylinder is connected to a lower slag discharge pipe in the lower deposition region. The upper section of the outer cylinder has a drain outlet. The upper section of the inner cylinder forms a pre-flocculation section, and the lower section forms an enhanced flocculation section. A mature flocculation region is formed between the outer cylinder and the inner cylinder. A pre-cyclone element is provided inside the pre-flocculation section, and an enhanced cyclone element is provided in the enhanced flocculation section. The internal flow area of ​​the pre-flocculation section is smaller than that of the enhanced flocculation section, and the cross-sectional area of ​​the mature flocculation region is larger than that of the enhanced flocculation section.

[0009] Furthermore, the outer diameter of the pre-flocculation section is smaller than the outer diameter of the enhanced flocculation section, and the inner cylinder forms a transition section between the pre-flocculation section and the enhanced flocculation section, the radial dimension of the transition section gradually increasing from top to bottom.

[0010] Furthermore, an upper slag-gathering ring is provided on the inner side of the outer cylinder at the position corresponding to the lower edge of the pre-flocculation section, and a slag-gathering ring plate is provided at the bottom of the upper slag-gathering ring. The outer cylinder, the upper slag-gathering ring, and the slag-gathering ring plate together form an upper slag-gathering trough with an open top. An upper slag discharge pipe is provided on the outer cylinder at the bottom of the upper slag-gathering trough.

[0011] Furthermore, the distance between the upper slag-gathering ring and the inner cylinder is less than the distance between the outer cylinder and the enhanced flocculation section, and the pre-flocculation section is provided with spirally extending upper guide ribs at the position corresponding to the upper slag-gathering ring.

[0012] Furthermore, the top of the outer cylinder is provided with drainage outlets distributed along its circumference, and the reactor structure also includes a drainage ring plate that can be raised and lowered at the drainage outlet position, a driving component that drives the drainage ring plate to rise and fall, and a slag-blocking ring plate that extends laterally is provided on the inner side of the drainage ring plate.

[0013] Furthermore, the outer surface of the enhanced flocculation section is provided with an outwardly protruding lower guide rib, which extends circumferentially along the inner cylinder, and the side of the lower guide rib extends obliquely towards the enhanced flocculation section from top to bottom; the distance between the outer cylinder and the enhanced flocculation section is greater than or equal to 60 cm, and the radial dimension of the lower guide rib protruding from the enhanced flocculation section is greater than or equal to 5 cm and less than or equal to 10 cm.

[0014] Furthermore, a guide tube is formed at the lower end of the enhanced flocculation section, and the radial dimension of the guide tube gradually decreases from top to bottom; the reactor structure also includes a slag-blocking ring cone plate disposed in the lower deposition area, the radial dimension of the slag-blocking ring cone plate gradually decreases from bottom to top, the vertical distance between the upper edge of the slag-blocking ring cone plate and the lower edge of the guide tube is less than or equal to 5 cm, the horizontal distance between the upper edge of the slag-blocking ring cone plate and the lower edge of the guide tube is greater than or equal to 50 cm, and the distance between the lower edge of the slag-blocking ring cone plate and the outer cylinder is greater than or equal to 10 cm and less than or equal to 20 cm.

[0015] Furthermore, the outer cylinder forms a deposition cone section in the lower section of the lower deposition area, the radial dimension of the deposition cone section gradually decreases from top to bottom, and the distance between the upper edge of the deposition cone section and the lower edge of the guide cylinder is less than or equal to 50 centimeters.

[0016] Furthermore, the enhanced flocculation section and / or the guide tube are provided with a rectifier, which is configured as a rectifier grid or a perforated wall.

[0017] Furthermore, the pre-swirling element includes a pre-swirling plate with pre-swirling holes. A spirally twisted pre-guided vane is disposed within the pre-swirling holes. The twist angle of the upper edge of the pre-guided vane towards its lower edge is greater than or equal to 3° / cm and less than or equal to 5° / cm. Multiple pre-swirling elements are arranged vertically, and the twist angle of each pre-swirling element gradually decreases from top to bottom. The enhanced swirling element includes an enhanced swirling plate with enhanced swirling holes. A spirally twisted enhanced guide vane is disposed within the enhanced swirling holes. The twist angle of the upper edge of the enhanced guide vane towards its lower edge is greater than or equal to 8° / cm and less than or equal to 12° / cm. Multiple enhanced swirling elements are arranged vertically, and the twist angle of each enhanced swirling element gradually decreases from top to bottom.

[0018] The beneficial effect of this invention is that by optimizing the structure of the cyclone condensation reactor, the problems existing in the prior art are effectively solved. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention.

[0020] Figure 2 for Figure 1 The diagram shows a top view of the pre-swirl element in the embodiment shown.

[0021] Figure 3 for Figure 1 A partial structural diagram of the inner cylinder after unfolding at the position of the upper guide rib in the embodiment shown.

[0022] Figure 4 for Figure 1 A partial structural diagram of the inner cylinder after unfolding at the location of the guide ribs in the embodiment shown.

[0023] Figure 5 for Figure 1 The illustrated embodiment is a partial structural diagram at one of the pre-swirling orifice locations.

[0024] Figure 6 for Figure 1 A schematic diagram of the pre-swirling plate in the embodiment shown.

[0025] The components are as follows: 1. Outer cylinder; 101. Deposition cone section; 2. Inner cylinder; 201. Pre-flocculation section; 202. Enhanced flocculation section; 203. Transition section; 3. Lower deposition zone; 4. Feed pipe; 5. Lower slag discharge pipe; 6. Drain outlet; 7. Mature flocculation zone; 8. Pre-swirl component; 801. Pre-swirl plate; 802. Pre-guide plate; 9. Enhanced swirl component; 10. Upper slag-gathering ring; 11. Slag-gathering ring plate; 12. Upper slag discharge pipe; 13. Upper guide rib; 14. Drainage ring plate; 15. Drive component; 16. Slag-blocking ring plate; 17. Lower guide rib; 18. Guide cylinder; 19. Slag-blocking ring cone plate; 20. Rectifier component; 21. Pre-swirl hole. Detailed Implementation

[0026] To more clearly illustrate the overall concept of the present invention, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0027] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0028] Furthermore, in the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two connected entities do not establish a connection relationship through an intermediate structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0030] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] In this invention, such as Figure 1-6As shown, a cyclone-enhanced flocculation reactor structure is provided, including an outer cylinder 1 and an inner cylinder 2 disposed inside the outer cylinder 1. The bottom of the inner cylinder 2 is open. The outer cylinder 1 forms a lower deposition region 3 below the inner cylinder 2. The inner cylinder 2 is connected to a feed pipe 4. The outer cylinder 1 is connected to a lower slag discharge pipe 5 in the lower deposition region 3. The upper section of the outer cylinder 1 is provided with a drain outlet 6. The upper section of the inner cylinder 2 forms a pre-flocculation section 201, and the lower section forms an enhanced flocculation section 202. A mature flocculation region 7 is formed between the outer cylinder 1 and the inner cylinder 2. The pre-flocculation section 201 is provided with a pre-cyclone element 8 inside, and the enhanced flocculation section 202 is provided with an enhanced cyclone element 9. The internal flow area of ​​the pre-flocculation section 201 is smaller than the internal flow area of ​​the enhanced flocculation section 202, and the flow cross-sectional area of ​​the mature flocculation region 7 is larger than the internal flow area of ​​the enhanced flocculation section 202.

[0032] When in use, the flocculation reactor structure of the present invention, as follows: Figure 1 As shown, water to be treated is injected through the feed pipe 4 at the top of the inner cylinder 2. After entering the pre-flocculation section 201 of the inner cylinder 2, the water flows from top to bottom to the enhanced flocculation section 202 and then to the lower deposition area 3. Since the internal flow area of ​​the pre-flocculation section 201 is smaller than that of the enhanced flocculation section 202, the water flow velocity in the pre-flocculation section 201 is relatively fast (preferably, the vertical velocity is designed to be 0.25–0.3 m / s). At this time, the swirl angle of the pre-swirl element 8 can be optimized (e.g., the torsion angle between the swirl plate and the vertical direction of the pre-swirl element 8 is selected from 3° / cm to 5° / cm). This allows the water flow in the pre-flocculation area to generate weak vortices at high flow velocities, guiding the particles to slowly collide and aggregate, avoiding the destruction of the newly formed micro-flocs by high swirling shear forces.

[0033] In this invention, water flows directly downward from the pre-flocculation section 201 into the enhanced flocculation section 202, causing the rapid flow of water in the pre-flocculation section 201 to slow down to the low-speed flow in the enhanced flocculation section 202. The water mainly flows in a vertical laminar flow combined with micro-vortex flow, which allows the micro-flocs to enter the enhanced flocculation section 202 relatively smoothly and prevents the micro-flocs from being dispersed by the water flow.

[0034] The enhanced flocculation section 202 has a relatively large internal flow area, resulting in a relatively slow water flow velocity (designed vertical flow velocity of 0.15–0.2 m / s). Under this relatively low flow velocity, the micro-flocs further swirl. At this point, the swirl angle of the pre-swirling element 8 can be optimized (e.g., the torsion angle between the swirl plate and the vertical direction of the pre-swirling element 8 is selected from 8° / cm to 12° / cm). This allows the water flow in the pre-flocculation section to generate relatively strong vortices at a slow flow velocity. These vortices guide the micro-flocs to further collide and agglomerate after entering the enhanced swirling element 9 at low flow velocity. This not only reduces the rapid shearing and breakage of the micro-flocs during entry into the enhanced swirling element 9 but also increases the residence time of the water in the enhanced flocculation section 202 by utilizing the low water flow velocity, thereby improving the efficiency of micro-floc collision and agglomeration using strong vortices.

[0035] Water flows out from the lower side of the enhanced flocculation section 202, and the flocs enter the lower sedimentation zone 3 before entering the mature flocculation zone. Some of the flocs flowing out from the lower side of the enhanced flocculation section 202 are carried downwards by the downward-flowing water to the lower side of the sedimentation zone 3. Some of the lighter flocs are carried by the water flow towards the mature flocculation zone 7. Within the mature flocculation zone 7, the flow area further increases, resulting in a lower upward flow velocity (designed vertical flow velocity of 0.1–0.15 m / s). The flocs within the mature flocculation zone 7 are affected by the low-velocity upward flow. The water flows upward or downward. Due to the relatively large vertical distance of the mature flocculation zone, the water flows at a low speed and over a long distance within the mature flocculation zone. The upward turbulence of the water flow on the flocs is weakened, making it easier for medium and large flocs in the mature flocculation section to settle downward to the lower deposition zone 3. Moreover, the medium and large flocs tend to carry micro-flocs in the water flow during the downward deposition process. As a small portion of the flocs are carried upward by the upward water flow, they undergo collision flocculation again, thus using the long distance and low flow velocity to flocculate a small portion of micro-flocs.

[0036] In summary, this invention optimizes the flow area of ​​each flocculation section and the positional coordination of the pre-flocculation section 201 and the enhanced flocculation section 202, thereby reducing the possibility of flocs being broken down again after formation and effectively utilizing the water path to improve flocculation efficiency. Specifically, compared to the technologies in existing patents mentioned in the background art, this invention, while achieving the same treatment efficiency, reduces the number of cyclone elements and path length compared to D1, simplifying the structure and improving efficiency. Compared to D2, it improves floc deposition efficiency, reduces flocs in the floating and drainage stage, and improves purification quality.

[0037] exist Figure 1In the illustrated embodiment, for the structure of the present invention, more specifically, the outer diameter of the pre-flocculation section 201 is smaller than the outer diameter of the enhanced flocculation section 202, and the inner cylinder 2 forms a transition section 203 between the pre-flocculation section 201 and the enhanced flocculation section, the radial dimension of the transition section 203 gradually increasing from top to bottom.

[0038] like Figure 1 As shown, by setting it up in this way, not only can the internal flow area of ​​the pre-flocculation section 201 be smaller than that of the enhanced flocculation section 202, but the flow cross-sectional area of ​​the mature flocculation region 7 at the position of the pre-flocculation section 201 can also be increased.

[0039] By setting the transition section 203, the water flow in the pre-flocculation section 201 can flow more smoothly to the enhanced flocculation section 202, and the flocs in the mature flocculation zone can also move downward from the position of the transition section 203.

[0040] In the illustrated embodiment, for the structure of the present invention, more specifically, an upper slag-gathering ring 10 is provided on the inner side of the outer cylinder at the position corresponding to the lower edge of the pre-flocculation section 201, and a slag-gathering ring plate 11 is provided at the bottom of the upper slag-gathering ring 10. The outer cylinder, the upper slag-gathering ring 10, and the slag-gathering ring plate 11 enclose to form an upper slag-gathering trough with an open top. An upper slag discharge pipe 12 is provided on the outer cylinder at the bottom of the upper slag-gathering trough.

[0041] like Figure 1 As shown, the formed upper flocculation trough allows the micro-flocs to be carried by the water flow to the upper edge of the upper flocculation ring 10. This increases the cross-sectional area of ​​the water flow, reduces the water velocity, and causes lateral fluctuations in the water flow. The micro-flocs carried by the water flow move laterally to the upper side of the upper flocculation trough, where they collide and further flocculate. The mature flocculation zone 7, located on the upper side of the upper flocculation trough, has a larger internal flow area and a lower water velocity, making it easier for the micro-flocs to aggregate into clumps on the upper side of the flocculation trough. These clumps then settle downwards and are collected within the upper flocculation trough. An upper flocculation valve can be installed on the upper flocculation pipe 12 to periodically discharge the flocculated material from the upper flocculation trough.

[0042] exist Figure 1 In the illustrated embodiment, more specifically, regarding the structure of the present invention, the slag-gathering ring plate 11 is inclined upwards from the outside to the inside.

[0043] exist Figure 1 In the illustrated embodiment, for the structure of the present invention, more specifically, the distance between the upper slag-gathering ring 10 and the inner cylinder is less than the distance between the outer cylinder and the enhanced flocculation section 202, and the pre-flocculation section 201 is provided with a spirally extending upper guide rib 13 at the position corresponding to the upper slag-gathering ring 10.

[0044] like Figure 1As shown, the distance between the upper slag-collecting ring 10 and the inner cylinder is reduced, so that the water flow is faster when it passes the position of the upper slag-collecting ring 10. At this time, the water flow is guided by the spirally extended upper guide rib 13 and moves upward in a spiral motion. After the water flow reaches the upper side of the upper slag-collecting ring 10, it drives the flocs to move outward through rotation, thereby promoting the flocs carried by the water flow to move and collide towards the upper side of the upper slag-collecting tank, so as to further promote the flocculation and sedimentation of the flocs on the upper side of the upper slag-collecting tank.

[0045] exist Figure 1 In the illustrated embodiment, for the structure of the present invention, more specifically, the top of the outer cylinder is provided with a drain outlet 6 distributed along its circumference, and the reactor structure also includes a drain ring plate 14 that can be raised and lowered at the drain outlet 6, a driving member 15 that drives the drain ring plate 14 to rise and fall, and a slag-blocking ring plate 16 that extends laterally is provided on the inner side of the drain ring plate 14.

[0046] like Figure 1 As shown, by setting up a baffle ring plate 16, the water flow velocity on the upper side of the upper slag collection tank is less than the water flow velocity in the area near the pre-flocculation section 201, thereby enabling the flocs on the lower side of the baffle ring plate 16 to move and gather slowly in the vertical direction, so as to further prevent the flocs from being drained out by the drain outlet 6.

[0047] In an optional embodiment, an annular inclined tube may also be provided on the inner side of the slag-blocking ring plate 16 to promote further collision and deposition of flocs floating with the water flow.

[0048] By making the drainage ring plate 14 liftable, such as Figure 1 As shown, the drainage level of the drain outlet 6 can be adjusted by controlling the raising and lowering of the drain ring plate 14, thereby adjusting the water flow speed by adjusting the difference between the drainage level and the water level inside the inner cylinder. Figure 1 In the illustrated embodiment, the driving component is configured as an electric or pneumatic telescopic rod to drive the drainage ring plate to rise and fall.

[0049] exist Figure 1 In the illustrated embodiment, to further specify the structure of the present invention, the outer surface of the enhanced flocculation section 202 is provided with an outwardly protruding lower guide rib 17, the lower guide rib 17 extends circumferentially along the inner cylinder, and the side of the lower guide rib 17 extends obliquely from top to bottom toward the enhanced flocculation section 202; the distance between the outer cylinder 1 and the enhanced flocculation section 202 is greater than or equal to 60 cm, and the radial dimension of the lower guide rib 17 protruding from the enhanced flocculation section 202 is greater than or equal to 5 cm and less than or equal to 10 cm.

[0050] like Figure 1 and Figure 4As shown, by setting the lower guide rib 17, the water in the mature flocculation zone 7 can be guided by the lower guide rib 17 to ripple laterally towards the outer cylinder 1 during the upward flow of water, thereby promoting the ripple of flocs towards the outer cylinder. As shown in the figure, due to the effect of the upper slag collection trough on the water flow obstruction, the flow velocity in the mature flocculation zone 7 directly below the upper slag collection trough is less than the flow velocity near the inner cylinder 2. As a result, the upward flow velocity of the flocs in this area slows down after they are rippled to the position near the outer cylinder 2, making it easier for the flocs to accumulate and grow larger at this position before being deposited downward.

[0051] In order to achieve the aggregation and deposition of flocs in the outer area of ​​the mature flocculation zone 7, it is preferable that the distance between the outer cylinder 1 and the enhanced flocculation section 202 is greater than or equal to 60 cm and the lateral distance of the lower guide rib 17 is less than or equal to 10 cm, so that the rising water flow and lateral undulating water flow in the mature flocculation zone are mainly concentrated in the area inside the dotted line, thereby making it easier for the flocs gathered outside the dotted line to clump together and sink.

[0052] In the illustrated embodiment, the lower guide ribs 17 are provided in multiple segments at intervals along the circumference of the inner cylinder 1, and the lower guide ribs 17 extend laterally. In an alternative embodiment, the lower guide ribs 17 may also be configured to extend spirally.

[0053] exist Figure 1 In the illustrated embodiment, more specifically regarding the structure of the present invention, a guide tube 18 is formed at the lower end of the enhanced flocculation section 202, and the radial dimension of the guide tube 18 gradually decreases from top to bottom; the reactor structure also includes a slag-blocking ring cone plate 19 disposed in the lower deposition region 3, the radial dimension of the slag-blocking ring cone plate 19 gradually decreases from bottom to top, the vertical distance between the upper edge of the slag-blocking ring cone plate 19 and the lower edge of the guide tube 18 is less than or equal to 5 cm, the horizontal distance between the upper edge of the slag-blocking ring cone plate 19 and the lower edge of the guide tube 18 is greater than or equal to 50 cm, and the distance between the lower edge of the slag-blocking ring cone plate 19 and the outer cylinder is greater than or equal to 10 cm and less than or equal to 20 cm.

[0054] like Figure 1 As shown, water and flocculants flowing out from the lower side of the enhanced flocculation section 202 flow downwards and then back up to the mature flocculation area. Larger and heavier flocculants are carried downwards by the water flow and deposit, while some lighter and smaller flocculants are carried laterally back up by the water flow. By incorporating a baffle ring cone 19, some flocculants can collide and aggregate in the guide tube 18, becoming larger. The larger flocculants then detach and flow downwards. This invention optimizes the distance between the baffle ring cone 19 and the lower edge and outer cylinder of the guide tube 18, maintaining sufficient flow space between them to prevent excessive water velocity at the baffle ring cone 19 position and allowing flocculants on the upper edge of the baffle ring cone 19 to deposit downwards.

[0055] This invention utilizes a guide tube 18 with a gradually decreasing cross-section, allowing water and flocculants flowing out of the guide tube 18 to flow from top to bottom into the lower deposition area 3 at a relatively high velocity, thereby promoting the flow of flocculants deeper into the deposition area. Simultaneously, as... Figure 1 As shown, the water flow can be made to have a relatively large water interface area in the mature flocculation zone when the water flows upward from the lower edge of the guide tube 18. This results in a lower water flow velocity in this area, which can reduce the impact of fluctuations on the flocculated material sinking near the outer tube and promote the flocculated material to sink from the edge of the slag-blocking ring cone plate 19.

[0056] exist Figure 1 In the illustrated embodiment, for the structure of the present invention, more specifically, the outer cylinder forms a deposition cone segment 101 in the lower section of the lower deposition region 3, the radial dimension of the deposition cone segment 101 gradually decreases from top to bottom, and the distance between the upper edge of the deposition cone segment 101 and the lower edge of the guide cylinder 18 is less than or equal to 50 centimeters.

[0057] like Figure 1 As shown, by setting up a sedimentation cone section 101, the flocculated material in the lower sedimentation area 3 can be easily collected and deposited, and the sediment can be discharged by the slag discharge pipe 5.

[0058] exist Figure 1 In the illustrated embodiment, to further specify the structure of the present invention, the enhanced flocculation section 202 and / or the guide tube 18 are provided with a rectifier 20, which is configured as a rectifier grid or a perforated wall.

[0059] By setting the rectifier 20, the water flow in the enhanced flocculation zone can be rectified and discharged to reduce the swirling in the water flow. As a result, when the guide tube 18 accelerates the overall water flow by constricting, the water flowing out of the guide tube 18 can flow out in a near-laminar state, thereby reducing the damage to large flocs caused by swirling shear under high-speed water flow.

[0060] exist Figure 1In the illustrated embodiment, to further specify the structure of the present invention, the pre-swirling element includes a pre-swirling plate 801, on which a pre-swirling hole 21 is provided. A spirally twisted pre-guide plate 802 is provided within the pre-swirling hole 21. The twist angle of the upper edge of the pre-guide plate 802 towards its lower edge is greater than or equal to 3° / cm and less than or equal to 5° / cm. Multiple pre-swirling elements are provided vertically, and the twist angle of each pre-swirling element gradually decreases from top to bottom. The enhanced swirling element includes an enhanced swirling plate, on which an enhanced swirling hole is provided. A spirally twisted enhanced guide plate is provided within the enhanced swirling hole. The twist angle of the upper edge of the enhanced guide plate towards its lower edge is greater than or equal to 8° / cm and less than or equal to 12° / cm. Multiple enhanced swirling elements are provided vertically, and the twist angle of each enhanced swirling element gradually decreases from top to bottom.

[0061] like Figure 1 As shown, three pre-swirling elements are vertically spaced along the inner edge of the pre-flocculation section 201. By optimizing the torsion angle of the pre-guide plate 802, the pre-swirling elements can guide the water flow to generate micro-vortices, which in turn guide the micro-floc particles to collide and aggregate.

[0062] By gradually reducing the torsion angle of each pre-swirling element from top to bottom, the vortex intensity generated by the water flow in the pre-flocculation section 201 can be gradually reduced from top to bottom. This allows the water flow to rapidly collide and form micro-flocs under high flow velocity and relatively high vortex action in the early stage of flocculation. At the position of the pre-swirling element on the lower side, flocculation is further carried out under the action of micro-vortex at a relatively high flow velocity, so as to avoid the newly formed micro-flocs being destroyed by high swirling shear force.

[0063] The enhanced flocculation section 202 is vertically spaced with multiple (6) enhanced vortex elements. By optimizing the torsion angle of the enhanced guide vanes, the enhanced vortex elements can guide the water flow under low flow velocity and guide the flocs to collide and aggregate under the action of strong rotating vortex.

[0064] By gradually reducing the torsion angle of each enhanced swirl element from top to bottom, the intensity of the vortex generated by the water flow in the enhanced flocculation section 202 can be gradually reduced from top to bottom. This allows the micro-flocs to collide rapidly and form flocs under low flow velocity and relatively high vortex action. At the position of the enhanced swirl element on the lower side, the flocs are further guided to collide and grow larger under the condition of further reducing vortex action, so as to avoid the newly formed micro-flocs being destroyed by high swirling shear force.

[0065] Regarding the explanation of the torsion angle, the specific details are as follows: Figure 5 and Figure 6In the embodiment shown, the projection angle between the upper and lower edges of the pre-guide plate 802 is 46° (the pre-guide plate 802 twists once), and the distance between the upper and lower edges of the pre-guide plate 802 is 10cm. Therefore, the twist angle of the pre-guide plate 802 shown in the figure is 4.6° / cm.

[0066] exist Figure 1 In the embodiment shown, the size of a single pre-swirling hole 21 and a single enhanced swirling hole are the same, the area of ​​the enhanced swirling plate is larger than the area of ​​the pre-swirling plate 801, and the number of enhanced swirling holes in the enhanced swirling plate is greater than the number of pre-swirling holes 21 in the pre-swirling plate 801, thereby achieving that the internal flow area of ​​the pre-swirling section is smaller than the internal flow area of ​​the enhanced flocculation section 202.

[0067] Figure 2 and Figure 5 , Figure 6 As a schematic diagram of a pre-swirling element, the structural form of the enhanced swirling element is referenced. Figure 2 and Figure 5 , Figure 6 The arrangement of pre-swirling and enhanced swirling elements is not limited to... Figure 5 and Figure 6 In the optional embodiment, the swirl plate opening and guide plate shown can also be used in other structural forms of pre-swirl components and enhanced swirl components, such as the swirl pool grid structure disclosed in CN121134945A, in which the angle of the swirl vanes can be adjusted accordingly.

[0068] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0069] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A structure for a cyclone-enhanced flocculation reactor, characterized in that, It includes an outer cylinder and an inner cylinder disposed inside the outer cylinder. The bottom of the inner cylinder is open. The outer cylinder forms a lower deposition area below the inner cylinder. The inner cylinder is connected to a feed pipe. The outer cylinder is connected to a lower slag discharge pipe in the lower deposition area. The upper section of the outer cylinder is provided with a drain outlet. The upper section of the inner cylinder forms a pre-flocculation section, the lower section forms an enhanced flocculation section, and a mature flocculation zone is formed between the outer cylinder and the inner cylinder; The pre-flocculation section is provided with a pre-swirling element on its inner side, and the enhanced flocculation section is provided with an enhanced swirling element; The internal flow area of ​​the pre-flocculation section is smaller than that of the enhanced flocculation section, and the cross-sectional area of ​​the flow of the mature flocculation region is larger than that of the enhanced flocculation section.

2. The structure of the cyclone-enhanced flocculation reactor according to claim 1, characterized in that, The outer diameter of the pre-flocculation section is smaller than that of the enhanced flocculation section. The inner cylinder forms a transition section between the pre-flocculation section and the enhanced flocculation section, and the radial dimension of the transition section gradually increases from top to bottom.

3. The structure of a cyclone-enhanced flocculation reactor according to claim 1 or 2, characterized in that, The inner side of the outer cylinder is provided with an upper slag-gathering ring at the position corresponding to the lower edge of the pre-flocculation section. The bottom of the upper slag-gathering ring is provided with a slag-gathering ring plate. The outer cylinder, the upper slag-gathering ring, and the slag-gathering ring plate enclose each other to form an upper slag-gathering trough with an open top. The outer cylinder is provided with an upper slag discharge pipe at the bottom of the upper slag-gathering trough.

4. The structure of the cyclone-enhanced flocculation reactor according to claim 3, characterized in that, The distance between the upper slag-gathering ring and the inner cylinder is less than the distance between the outer cylinder and the enhanced flocculation section. The pre-flocculation section is provided with spirally extending upper guide ribs at the position corresponding to the upper slag-gathering ring.

5. The structure of the cyclone-enhanced flocculation reactor according to claim 3, characterized in that, The top of the outer cylinder is provided with drainage outlets distributed along its circumference. The reactor structure also includes a drainage ring plate that can be raised and lowered at the drainage outlet position, a driving component that drives the drainage ring plate to rise and fall, and a slag-blocking ring plate that extends laterally on the inner side of the drainage ring plate.

6. The structure of the cyclone-enhanced flocculation reactor according to claim 3, characterized in that, The outer surface of the enhanced flocculation section is provided with an outwardly protruding lower guide rib. The lower guide rib extends circumferentially along the inner cylinder, and the side of the lower guide rib extends obliquely from top to bottom toward the enhanced flocculation section. The distance between the outer cylinder and the enhanced flocculation section is greater than or equal to 60 cm, and the radial dimension of the lower guide rib protruding from the enhanced flocculation section is greater than or equal to 5 cm and less than or equal to 10 cm.

7. The structure of the cyclone-enhanced flocculation reactor according to claim 1, characterized in that, A guide tube is formed at the lower end of the enhanced flocculation section, and the radial dimension of the guide tube gradually decreases from top to bottom; The reactor structure also includes a slag-blocking ring cone plate disposed in the lower deposition area. The radial dimension of the slag-blocking ring cone plate gradually decreases from bottom to top. The vertical distance between the upper edge of the slag-blocking ring cone plate and the lower edge of the guide cylinder is less than or equal to 5 cm. The horizontal distance between the upper edge of the slag-blocking ring cone plate and the lower edge of the guide cylinder is greater than or equal to 50 cm. The distance between the lower edge of the slag-blocking ring cone plate and the outer cylinder is greater than or equal to 10 cm and less than or equal to 20 cm.

8. The structure of the cyclone-enhanced flocculation reactor according to claim 7, characterized in that, The outer cylinder forms a deposition cone section in the lower section of the lower deposition area. The radial dimension of the deposition cone section gradually decreases from top to bottom. The distance between the upper edge of the deposition cone section and the lower edge of the guide cylinder is less than or equal to 50 centimeters.

9. The structure of the cyclone-enhanced flocculation reactor according to claim 7, characterized in that, The enhanced flocculation section and / or the guide tube are provided with a rectifier, which is configured as a rectifier grid or a perforated wall.

10. The structure of the cyclone-enhanced flocculation reactor according to claim 1, characterized in that, The pre-swirling element includes a pre-swirling plate, on which a pre-swirling hole is formed. A spirally twisted pre-guided plate is provided inside the pre-swirling hole. The twist angle of the upper edge of the pre-guided plate toward its lower edge is greater than or equal to 3° / cm and less than or equal to 5° / cm. Multiple pre-swirling elements are provided vertically, and the twist angle of each pre-swirling element gradually decreases from top to bottom. The enhanced swirling element includes an enhanced swirling plate, which has enhanced swirling holes. The enhanced swirling holes are provided with spirally twisted enhanced guide vanes. The twist angle of the upper edge of the enhanced guide vane toward its lower edge is greater than or equal to 8° / cm and less than or equal to 12° / cm. Multiple enhanced swirling elements are provided vertically, and the twist angle of each enhanced swirling element gradually decreases from top to bottom.

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