Grid, flocculation module and assembled flocculation tank for flocculation tank

Abstract

The present application relates to the technical field of water treatment, and particularly relates to a grid for flocculation tank, a flocculation module and a spliced flocculation tank. The grid for flocculation tank comprises a body, a plurality of cyclone wings and a plurality of first arc wings. The body is provided with a plurality of mesh holes, the plurality of mesh holes are arranged in an array, and each mesh hole corresponds to the plurality of cyclone wings and the plurality of first arc wings. Each cyclone wing corresponding to each mesh hole is connected to the upper side of the body and is arranged at intervals around the edge of the mesh hole, and the cyclone wing extends from the edge of the mesh hole to the area outside the mesh hole. Each first arc wing corresponding to each mesh hole is connected to the lower side of the body and is arranged at intervals around the edge of the mesh hole. By using the grid for flocculation tank, the water flow can form a flow around the wings and a vortex area behind the wings, so as to provide suitable hydraulic conditions for flocculation, increase the effective collision times of particles, and thus optimize the flocculation effect.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology, and more specifically, to a grid for a flocculation tank, a flocculation module, and a modular flocculation tank. Background Technology

[0002] Flocculation is one of the core processes in water treatment, and its effectiveness directly affects the operating load of subsequent sedimentation and filtration units, as well as the final effluent quality. Currently, the vast majority of water treatment systems both domestically and internationally utilize fixed hydraulic flocculation tanks with reinforced concrete structures. Although this technology has a long history of application and is mature, its inherent design and structural characteristics result in problems such as poor flocculation performance when faced with complex operating conditions in actual operation. Summary of the Invention

[0003] The present invention aims to provide a grid for a flocculation tank, a flocculation module, and a modular flocculation tank. By using a grid for the flocculation tank, the water flow can form a flow around the vanes and form a vortex zone behind the vanes, thereby providing suitable hydraulic conditions for flocculation, increasing the effective number of particle collisions, and thus optimizing the flocculation effect.

[0004] The number of tiny eddies in the water flow is increased by adjusting the flow regime; as the flocculation stage increases, the flow velocity of the water through the mesh gradually decreases, forming a favorable gradual reaction environment.

[0005] The embodiments of the present invention can be implemented as follows: In a first aspect, the present invention provides a grid for a flocculation tank, the grid for a flocculation tank comprising a body, a plurality of swirling vanes and a plurality of first arc-shaped vanes; The body has multiple mesh openings arranged in an array, and each mesh opening corresponds to multiple swirl vanes and multiple first arc-shaped vanes; Each mesh opening has a corresponding swirl vane connected to the upper side of the main body and spaced around the edge of the mesh opening. The swirl vane bends and extends from the edge of the mesh opening toward the area outside the mesh opening. Each mesh opening has a corresponding first arc-shaped vane connected to the lower side of the main body and spaced around the edge of the mesh opening.

[0006] In an optional embodiment, the mesh is hexagonal, and the mesh corresponds to six swirl vanes and six first arc-shaped vanes; Each edge of the upper part of the mesh is provided with a swirl vane, and each edge of the lower part of the mesh is provided with a first arc-shaped vane.

[0007] In an optional embodiment, the first arc-shaped wing is made of shape memory alloy, and the angle between the first arc-shaped wing and the horizontal plane decreases as the temperature of the water in contact with the first arc-shaped wing decreases.

[0008] In an optional embodiment, the first arc-shaped wing is made of a nickel-titanium-based shape memory alloy and is used to oscillate between 45 degrees and 15 degrees as the temperature of the water it contacts changes within its phase transition temperature range.

[0009] In a second aspect, the present invention provides a flocculation module, which includes a fixed grid for a flocculation tank, a movable component, and the aforementioned grid for a flocculation tank. The grid for the flocculation tank is located above the fixed grid for the flocculation tank and is movably connected to the fixed grid for the flocculation tank via a movable component; The fixed grid of the flocculation tank has a through hole, and the first arc-shaped wing of the grid of the flocculation tank extends through the through hole to the side of the fixed grid of the flocculation tank away from the grid of the flocculation tank. The movable component is used to drive the flocculation tank grid to move relative to the fixed flocculation tank grid under the action of external force, so that the mesh openings on the flocculation tank grid are aligned with the through holes on the fixed flocculation tank grid, or the mesh openings on the flocculation tank grid are staggered with the through holes on the fixed flocculation tank grid.

[0010] In an optional embodiment, a second arc-shaped wing is provided on the side of the fixed grid for the flocculation tank that is away from the grid for the flocculation tank. When the mesh openings on the flocculation tank grid are aligned with the through holes on the fixed flocculation tank grid, the first arc-shaped wing and the second arc-shaped wing are sequentially arranged along the outer edge of the through holes.

[0011] In an optional embodiment, both the mesh and the through holes are hexagonal, and the mesh corresponds to six swirl vanes and two first arc-shaped vanes. Each edge of the upper end of the mesh corresponds to one swirl vane; four second arc-shaped vanes are provided at the lower end of the through holes. When the mesh openings on the flocculation tank grid are aligned with the through holes on the fixed flocculation tank grid, each edge at the lower end of the through hole corresponds to a first arc-shaped wing or a second arc-shaped wing.

[0012] In an optional embodiment, the slide rail is connected to the flocculation tank by a fixed mesh, and the flocculation tank is slidably connected to the slide rail by the mesh; the rotating connecting seat is connected to the flocculation tank by a mesh. The transmission rod is rotatably connected to the rotating connecting seat, and the transmission rod is threadedly engaged with the movable block connected to the grid in the flocculation tank; The drive rod is rotatably connected to the flocculation tank by a fixed mesh and is also connected to the transmission rod for transmission. The drive rod is used to rotate under the action of external force, and drives the transmission rod to rotate, thereby causing the movable block and the grid of the flocculation tank to slide relative to the slide rail. The direction in which the grid of the flocculation tank slides relative to the slide rail is horizontal.

[0013] Thirdly, the present invention provides a modular flocculation tank, which includes multiple vertical shafts arranged in an array or side by side, and the multiple vertical shafts are connected along the flow direction. Each shaft contains multiple flocculation modules as described above, spaced vertically and arranged horizontally.

[0014] In an optional implementation, two adjacent vertical shafts along the flow direction are connected by a flow passage located at the critical point of the two vertical shafts, and the multiple flow passages increase in size sequentially along the flow direction.

[0015] The beneficial effects of the grid for flocculation tanks, flocculation modules, and modular flocculation tanks provided in the embodiments of the present invention include: The flocculation tank mesh comprises a main body, multiple swirling vanes, and multiple first arc-shaped vanes. The main body has multiple mesh openings arranged in an array, with each opening corresponding to multiple swirling vanes and multiple first arc-shaped vanes. Each swirling vane corresponding to a mesh opening is connected to the upper side of the main body and is spaced around the edge of the mesh opening, curving outwards from the edge of the mesh opening. Each first arc-shaped vane corresponding to a mesh opening is connected to the lower side of the main body and is spaced around the edge of the mesh opening. By using the flocculation tank mesh, the water flow can form a surrounding flow after passing the vanes, creating a vortex zone behind the vanes, thus providing suitable hydraulic conditions for flocculation, increasing the effective collision frequency of particles, and optimizing the flocculation effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the grid used in the flocculation tank provided in this embodiment; Figure 2 This is a schematic diagram of the structure of the upper side of the grid used in the flocculation tank provided in this embodiment; Figure 3 This is a schematic diagram of the structure of the lower side of the grid used in the flocculation tank provided in this embodiment; Figure 4 This is a schematic diagram of the flocculation module provided in this embodiment from a first-view perspective; Figure 5 This is a schematic diagram of the flocculation module provided in this embodiment from a second perspective. Figure 6 This is a schematic diagram of the structure of the lower side of the fixed grid for the flocculation tank provided in this embodiment; Figure 7 This is a schematic diagram of the lower structure of the flocculation module provided in this embodiment; Figure 8 This is an exploded view of the flocculation module provided in this embodiment; Figure 9 This is a schematic diagram of the assembled flocculation tank provided in this embodiment.

[0018] Icons: 100- Grid for flocculation tank; 110- Body; 120- Swirl vane; 130- First arc-shaped vane; 111- Mesh opening; 200- Flocculation module; 210- Moving component; 220- Fixed grid for flocculation tank; 221- Through hole; 222- Second arc-shaped vane; 211- Slide rail; 212- Rotating connecting seat; 213- Transmission rod; 214- Moving block; 215- Drive rod; 300- Assembled flocculation tank; 310- Vertical shaft. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, 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, and therefore should not be construed as a limitation of this invention.

[0023] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0024] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0025] The inventors discovered through research that flocculation is one of the core processes in water treatment, and its effectiveness directly affects the operating load of subsequent sedimentation and filtration units, as well as the final effluent quality. Currently, the vast majority of water treatment systems both domestically and internationally utilize fixed hydraulic flocculation tanks with reinforced concrete structures. Although this technology has a long history of application and is technically mature, its inherent design and structural characteristics reveal many insurmountable drawbacks when facing complex operating conditions in actual operation.

[0026] (1) Poor adaptability to changes in water volume, making flexible control difficult. The hydraulic flow patterns (such as flow velocity and GT value) of fixed flocculation tanks rely on fixed corridor dimensions, baffle spacing, or blade angles for design. Once built, their structure cannot be changed. However, the actual treated water volume fluctuates with changes in day and night and seasons. When operating at low load, the flow velocity in the tank is too low, which may cause the flocs to fail to collide and grow effectively due to insufficient kinetic energy, or even settle prematurely. When operating at high load, the flow velocity is too high, which may cause the formed flocs to be sheared and broken by the high-speed water flow, resulting in a deterioration of the flocculation effect and an increase in effluent turbidity. The existing structure lacks effective real-time adjustment means. Operators can usually only make rough adjustments by starting and stopping the water pump group, which cannot achieve refined and optimized control of the flocculation process.

[0027] (2) Insufficient ability to cope with water quality fluctuations. Under low temperature conditions, the viscosity coefficient of water increases, Brownian motion weakens, flocculant hydrolysis is slow, flocs are not easy to form and have low density and strength. The mechanical energy input (water flow velocity) of a fixed flocculation tank is fixed, and it cannot be adapted to the milder and longer flocculation conditions required for low temperature and low turbidity water, resulting in poor floc formation and poor settling performance, which is a long-term technical problem in the field of water treatment.

[0028] (3) High turbidity water treatment has a large impact load. When the raw water quality suddenly deteriorates (such as high turbidity water caused by rainstorms), the concentration of colloidal particles in the water increases sharply, requiring a higher flocculant dosage and a different energy input gradient. The energy input sequence of a fixed flocculation tank is fixed, which cannot quickly enhance the disturbance intensity of the upstream flocculation to promote colloid destabilization, nor can it optimize the downstream flocculation environment to prevent overloaded flocs from being broken up, which can easily lead to increased chemical consumption and unstable effluent quality.

[0029] (4) Relatively high operating energy consumption. In order to ensure the treatment effect under the most unfavorable working conditions, the design of fixed flocculation tanks often leaves a large margin. Under most conventional working conditions, its head loss and energy consumption are not in the optimal range, resulting in energy waste.

[0030] In summary, traditional fixed hydraulic flocculation tanks with reinforced concrete structures, due to their inherent "fixed" nature, are no longer able to meet the urgent needs of modern water plants for intelligent operation, efficient water quality assurance, and rapid construction. Therefore, the water treatment field urgently needs a new type of flocculation technology and device that can quickly, flexibly, and automatically adjust the flocculation energy input and flow field environment according to changes in influent flow rate and water quality.

[0031] To overcome the shortcomings of the existing technology, please refer to Figures 1-6 The present invention provides a grid 100 for a flocculation tank, a flocculation module 200, and an assembled flocculation tank 300.

[0032] The following is a detailed description of the flocculation tank grid 100, flocculation module 200, and assembled flocculation tank 300 provided in this embodiment.

[0033] First, please refer to Figures 1-3 This embodiment provides a grid 100 for a flocculation tank. The grid 100 for the flocculation tank includes a body 110, a plurality of swirl vanes 120 and a plurality of first arc-shaped vanes 130. The body 110 has multiple mesh holes 111 arranged in an array, and each mesh hole 111 corresponds to multiple swirl vanes 120 and multiple first arc-shaped vanes 130. Each swirl vane 120 corresponding to each mesh 111 is connected to the upper side of the body 110 and is spaced around the edge of the mesh 111. The swirl vane 120 bends and extends from the edge of the mesh 111 toward the area outside the mesh 111. Each first arc-shaped vane 130 corresponding to each mesh 111 is connected to the lower side of the body 110 and is spaced around the edge of the mesh 111.

[0034] Please refer to Figures 1-3 The working principle of this flocculation tank with a 100-mesh grid is as follows: The flocculation tank grid 100 includes a body 110, multiple swirling vanes 120, and multiple first arc-shaped vanes 130. The body 110 has multiple mesh openings 111 arranged in an array, with each mesh opening corresponding to multiple swirling vanes 120 and multiple first arc-shaped vanes 130. Each swirling vane 120 corresponding to a mesh opening 111 is connected to the upper side of the body 110 and is spaced around the edge of the mesh opening 111, with the vanes 120 extending outwards from the edge of the mesh opening 111. Each first arc-shaped vane 130 corresponding to a mesh opening 111 is connected to the lower side of the body 110 and is spaced around the edge of the mesh opening 111. By using the flocculation tank grid 100, water flow can form a surrounding flow after passing the vanes, creating a vortex zone behind the vanes, thus providing suitable hydraulic conditions for flocculation, increasing the effective collision frequency of particles, and optimizing the flocculation effect. Furthermore, by adjusting the flow regime, the number of tiny eddies in the water flow is increased; as the flocculation stage increases, the flow velocity of the water through the mesh 111 gradually decreases, forming a favorable gradual reaction environment.

[0035] Further, please refer to Figures 1-3 In this embodiment, the mesh 111 is set as a hexagonal hole, and the mesh 111 corresponds to six swirl vanes 120 and six first arc-shaped vanes 130 (e.g., Figure 2 (As shown in the figure). Each edge of the upper part of the mesh 111 is provided with a corresponding swirl vane 120, and each edge of the lower part of the mesh 111 is provided with a corresponding first arc-shaped vane 130. It should be noted that, please refer to... Figure 2 and Figure 3 When configuring the first arc-shaped winglet 130, six first arc-shaped winglets 130 can be used (e.g., Figure 2 As shown), it is also possible to use two first arc-shaped winglets 130 (as shown). Figure 3 (as shown), or other numbers of the first arc-shaped winglets 130 may be used. That is, the specific number of the first arc-shaped winglets 130 can be adjusted according to actual needs.

[0036] In other embodiments of the present invention, the size of the mesh 111 can be adjusted as needed; that is, the shape of the mesh 111 can be further optimized, and a shape other than hexagonal can be adopted. Furthermore, the forms of the swirling vanes 120 and the first arc-shaped vanes 130 can be further optimized to better form micro-vortices and optimize the flocculation effect. In addition to the vane material, the main body material can be stainless steel, plastic, polymer materials, etc.

[0037] When manufacturing the first arc-shaped wing 130, the first arc-shaped wing 130 is made of shape memory alloy. When the water temperature in contact with the first arc-shaped wing 130 decreases, the angle between the first arc-shaped wing 130 and the horizontal plane becomes smaller, thereby reducing the flow area of ​​the mesh 111 and also reducing the size of the vortex.

[0038] Specifically, the first arc-shaped vane 130 is made of nickel-titanium-based shape memory alloy. By adjusting the ratio of nickel and titanium or adding other elements, the phase transition temperature of the nickel-titanium shape memory alloy can be precisely controlled. This allows the first arc-shaped vane 130 to automatically and reversibly oscillate between 45 degrees and 15 degrees when the water temperature it contacts changes within its phase transition temperature range. For example, when the phase transition temperature is between 4°C and 30°C, the first arc-shaped vane 130 can automatically and reversibly oscillate between 45 degrees and 15 degrees when the water temperature changes from 4°C to 30°C. This enables the function of reducing the flow area of ​​the mesh 111 and the vortex size by automatically changing the angle of the first arc-shaped vane 130 under low-temperature conditions, thereby increasing the G-value and automatically adapting to low-temperature conditions.

[0039] Based on the above-mentioned 100-grid design for the flocculation tank, please refer to... Figures 1-7 This embodiment also provides a flocculation module 200, which includes an active component 210, a flocculation tank grid 100, and the aforementioned flocculation tank grid 100. The flocculation tank grid 100 is located above the fixed flocculation tank grid 220 and is movably connected to the fixed flocculation tank grid 220 via the movable component 210; The fixed grid 220 for the flocculation tank has through holes 221, and the first arc-shaped wing 130 of the grid extends through the through holes 221 to the side of the fixed grid 220 facing away from the grid 100. It should be noted that in this embodiment, the fixed grid 220 for the flocculation tank uses a configuration of two first arc-shaped wing 130s (e.g., Figure 3 (as shown) The movable component 210 is used to drive the flocculation tank grid 100 to move relative to the fixed flocculation tank grid 220 under the action of external force, so that the mesh holes 111 on the flocculation tank grid 100 are directly opposite to the through holes 221 on the fixed flocculation tank grid 220, or the mesh holes 111 on the flocculation tank grid 100 and the through holes 221 on the fixed flocculation tank grid 220 are staggered.

[0040] Through the above structural arrangement, the flocculation module 200 can move the flocculation tank grid 100 relative to the fixed flocculation tank grid 220 by operating the movable component 210. This allows the mesh openings 111 on the flocculation tank grid 100 to be directly aligned with the through holes 221 on the fixed flocculation tank grid 220, or the mesh openings 111 on the flocculation tank grid 100 and the through holes 221 on the fixed flocculation tank grid 220 to be staggered. The mesh openings 111 on the flocculation tank grid 100 and the through holes 221 on the fixed flocculation tank grid 220 correspond one-to-one, and the two corresponding holes form a flow channel. Therefore, by adjusting the area of ​​the mesh openings 111 that connect the flocculation tank grid 100 and the fixed flocculation tank grid 220, the flow velocity and G-value of the flow channel formed by the mesh openings 111 and the through holes 221 can be adjusted to be within the optimal range.

[0041] Furthermore, when the flocculation tank grid 100 and the flocculation tank fixed grid 220 are arranged vertically, both the flocculation tank grid 100 and the flocculation tank fixed grid 220 are set horizontally and fit together. At this time, the multiple mesh holes 111 and through holes 221 can be increased from top to bottom, that is, the mesh holes 111 on the flocculation tank grid 100 are smaller than the mesh holes and through holes 221 on the flocculation tank fixed grid 220.

[0042] Based on the above structure, a second arc-shaped wing 222 is arranged on the side of the fixed grid 220 of the flocculation tank that is away from the grid 100 of the flocculation tank. When the mesh 111 on the grid 100 for flocculation tank is aligned with the through hole 221 on the fixed grid 220 for flocculation tank, the first arc-shaped wing 130 and the second arc-shaped wing 222 are arranged sequentially along the outer edge of the through hole 221.

[0043] Furthermore, in this embodiment, both the mesh 111 and the through hole 221 are hexagonal holes, and the mesh 111 corresponds to six swirl vanes 120 and two first arc-shaped vanes 130 (e.g., Figure 3 As shown), each edge of the upper end of the mesh 111 is provided with a corresponding swirl vane 120; four second arc-shaped vanes 222 are provided at the lower end of the hole 221; When the mesh openings on the grid 100 for the flocculation tank are aligned with the through holes 221 on the fixed grid 220 for the flocculation tank, each edge at the lower end of the through hole 221 corresponds to a first arc-shaped wing 130 or a second arc-shaped wing 222.

[0044] Therefore, with this arrangement, six arc-shaped blades can be correspondingly installed at the lower end of the hole 221.

[0045] Please refer to Figures 1-7When configuring the movable component 210, the movable component 210 includes a slide rail 211, a rotating connecting seat 212, a transmission rod 213, a movable block 214, and a drive rod 215; The slide rail 211 is connected to the flocculation tank by a fixed mesh 220, and the flocculation tank is slidably connected to the slide rail 211 by a mesh 100; the rotating connecting seat 212 is connected to the flocculation tank by a mesh 100. The transmission rod 213 is rotatably connected to the rotating connecting seat 212, and the transmission rod 213 is threadedly engaged with the movable block 214 connected to the grid 100 in the flocculation tank; The drive rod 215 is rotatably connected to the flocculation tank by a fixed mesh 220 and is also connected to the transmission rod 213. The drive rod 215 is used to rotate under the action of external force, and drives the transmission rod 213 to rotate, thereby driving the movable block 214 and the flocculation tank grid 100 to slide relative to the slide rail 211. The direction in which the flocculation tank grid 100 slides relative to the slide rail 211 is horizontal.

[0046] Therefore, based on the above structure, an operating handle connected to the drive rod 215 can be configured to facilitate the rotation of the drive rod 215. When the drive rod 215 rotates, it can drive the transmission rod 213 to rotate. The transmission rod 213 is rotatably connected to the fixed grid 220 for the flocculation tank, and the movable block 214 connected to the grid 100 for the flocculation tank is threadedly connected to the transmission rod 213. Therefore, the rotation of the transmission rod 213 can drive the movable block 214 and the grid 100 for the flocculation tank to slide relative to the slide rail 211, thereby causing relative movement between the grid 100 for the flocculation tank and the fixed grid 220 for the flocculation tank. This allows adjustment of the size of the mesh 111 that connects the grid 100 for the flocculation tank and the fixed grid 220 for the flocculation tank, thereby adjusting the flow velocity and G-value of the partially formed flow channel connected by the mesh 111 and the hole 221 to be within the optimal range.

[0047] In this embodiment, the drive rod 215 is arranged vertically, while the transmission rod 213 is arranged horizontally. Therefore, to enable the drive rod 215 to be connected to the transmission rod 213, the drive rod 215 and the transmission rod 213 are connected by a bevel gear structure. That is, bevel gears that mesh with each other are arranged on the drive rod 215 and the transmission rod 213, so that transmission and reversal can be performed. It should also be noted that the transmission rod 213 can be a threaded rod, and the movable block 214 is provided with a threaded hole that is threaded to the transmission rod 213. Alternatively, a threaded section can be provided on the transmission rod 213 to be threaded to the movable block 214.

[0048] Based on the aforementioned flocculation module 200, please refer to... Figures 1-9This embodiment also provides a modular flocculation tank 300, which includes multiple vertical shafts 310. The multiple vertical shafts 310 are arranged in an array or side by side, and the multiple vertical shafts 310 are connected along the flow direction. Each shaft 310 contains multiple flocculation modules 200 as described above, which are spaced vertically and horizontally arranged.

[0049] Furthermore, two adjacent vertical shafts 310 along the flow direction are connected by flow passages provided at the critical point of the two vertical shafts 310, and the multiple flow passages increase in size sequentially along the flow direction.

[0050] Please refer to Figures 1-9 Based on the aforementioned grid 100 and flocculation module 200 for the flocculation tank, the specific structural configuration of the assembled flocculation tank 300 is as follows: The modular flocculation tank 300 is composed of several vertical shafts 310, and each vertical shaft 310 is equipped with multiple horizontally installed flocculation modules 200, and the flocculation module 200 includes a grid 100 for the flocculation tank. When configuring the grid 100 for each layer of flocculation tank, a number of regular hexagonal mesh openings 111 can be evenly arranged. At the same time, the number and size of the shafts 310, grids, and mesh openings 111 are set according to the module according to different treatment scales. The flocculation tank is divided into several levels according to the principle of gradually decreasing flow velocity in the shafts 310, and each level consists of several shafts 310. There are flow holes between the shafts 310, and the size of the flow holes is also set according to the principle of gradually decreasing flow velocity, with the size of the flow holes gradually increasing.

[0051] A multi-layer flocculation module 200 is installed within the vertical shaft 310. Its function is to provide suitable hydraulic conditions for flocculation, increase the effective number of particle collisions, and increase the number of micro-vortices in the water flow by adjusting the flow regime. As the number of flocculation stages increases, the flow velocity of the water through the mesh 111 gradually decreases, forming a favorable decreasing reaction environment. To ensure a promoting effect on particle flocculation, the formed vortices need to be close to the order of magnitude of the particle size.

[0052] The mesh 111 adopts a regular hexagonal structure, and the size of the mesh 111 gradually increases with the increase of the flocculation stage. Swirl vanes 120 and first arc-shaped vanes 130 are arranged around the mesh 111. After the water flows through the vanes, it forms a flow around them and forms a vortex zone behind the vanes. The two flocculation tanks of the same flocculation module 200 can form a flow channel by the mesh 111 and the through holes 221 arranged above and below the grid 100. The upper mesh 111 is surrounded by 6 swirl vanes 120 above the grid plane and 2 first arc-shaped vanes 130 below the grid plane. The lower through holes 221 are surrounded by 4 second arc-shaped vanes 222 below the grid plane. The first arc-shaped vanes 130 and the second arc-shaped vanes 222 form a complete flow guiding structure. Furthermore, the upper mesh can move horizontally. At this time, the upper mesh 111 and the lower through hole 221 together form a smaller hexagon, thus realizing the adjustment of the flow channel size.

[0053] When adjusting the dimensions of the flow channel, the drive rod 215 can be rotated by operating the handle, so that the upper flocculation tank grid 100 and the lower flocculation tank grid 100 move relative to each other, that is, the upper grid moves horizontally. It should be noted that a scale can be set on the operating handle, so that the horizontal movement distance of each upper flocculation tank grid 100 in the vertical shaft 310 can be set by manually rotating the operating handle.

[0054] Both the first arc-shaped vane 130 and the second arc-shaped vane 222 can be made of nickel-titanium-based shape memory alloy. By adjusting the ratio of nickel and titanium or adding other elements, the phase transition temperature of the nickel-titanium shape memory alloy can be precisely controlled. This allows the first arc-shaped vane 130 and the second arc-shaped vane 222 to automatically and reversibly swing between 45 degrees and 15 degrees when the water temperature changes from 4°C to 30°C. This enables the automatic change of the angle of the first arc-shaped vane 130 and the second arc-shaped vane 222 to reduce the flow area of ​​the mesh 111 and the vortex size under low temperature conditions, thereby increasing the G value and automatically adapting to low temperature conditions.

[0055] Therefore, the flocculation tank can dynamically adjust its structural dimensions according to changes in water volume. Under low water volume conditions, a low-load mode is activated. Based on the inlet flow meter readings and big data analysis, AI calculations determine the optimal flow velocity of mesh 111, the through-holes 221, and the mesh 111 size. By rotating the operating handle, the upper flocculation tank moves horizontally using the mesh 100, reducing the size of the flow channels formed by the opposing meshes 111 and through-holes 221, ensuring that the flow velocity and G-value through the channels are within the optimal range. By adjusting the opening and closing status of the channels between shafts 310, some shafts 310 can be used or crossed. Under low-temperature conditions, the number of shafts 310 in use increases, thereby increasing the flocculation reaction time and GT value, optimizing floc formation conditions. These adjustments can be set in stages to avoid excessively frequent adjustments.

[0056] In summary, please refer to Figures 1-9 Through its unique mechanical structure, the flocculation tank can automatically or manually adjust the size of the flow channel formed by the mesh 111 of the internal water flow channel according to the real-time changes in the influent flow rate, thereby dynamically changing the water flow velocity and turbulence intensity, so that the hydraulic conditions are always maintained in the optimal flocculation range (GT value), avoiding the problems of low-load sedimentation and high-load shear. It also addresses the challenges of dealing with water quality fluctuations (especially low temperature and low turbidity, and high turbidity): During periods of low temperature and low turbidity, the mesh size 111 is adjusted to create a gentler and longer flocculation path; during periods of high turbidity, the mesh size 111 is adjusted to enhance the intensity of upstream disturbance and optimize the energy input sequence, thereby significantly improving the treatment effect on complex raw water quality.

[0057] Achieving intelligentization and energy conservation: Through the above-mentioned adaptive control mechanism, an intelligent flocculation system that can respond to changes in operating conditions and optimize itself is constructed, minimizing chemical and energy consumption while ensuring excellent effluent quality.

[0058] As can be seen from the above, the multi-layer flocculation module 200 installed in the vertical shaft 310 is constructed through a modular assembly structure. It can be combined with an intelligent adaptive control system to achieve rapid deployment, flexible expansion, and precise optimization control of water quantity and quality in the flocculation process.

[0059] Compared with the prior art, the modular flocculation tank 300 provided in this embodiment, by adopting the above-mentioned flocculation tank grid 100 and flocculation module 200, has the following effects: (1) Significantly enhanced operational efficiency and adaptability. By adjusting the size of the mesh 111, precise control of the water flow velocity and G-value is achieved, enabling the flocculation process to maintain optimal dynamic conditions under various treatment water volumes. This effectively solves the core problem of poor adaptability of traditional tanks to water volume changes, resulting in stable and reliable effluent quality. By reducing the opening angle of the vanes, a denser and more meandering micro-vortex flow field is formed, extending the hydraulic residence time and increasing the number of effective floc collisions. At the same time, excessive shearing is avoided, successfully solving the problem of difficult floc formation and poor effect under low temperature and low turbidity conditions. By increasing the opening angle of the vanes, a high-intensity disturbance zone is created in the front section to quickly disperse the agent and promote colloid destabilization; the disturbance is appropriately reduced in the rear section to protect the growth of large floc particles. This intelligent energy gradient distribution significantly enhances the system's ability to resist shock loads. The combination of mesh 111 and vanes creates a more efficient and controllable micro-vortex flocculation environment, resulting in fast floc formation, dense particles, good settling performance, and stable control of effluent turbidity at a low level.

[0060] (2) Significant achievements in intelligentization and energy conservation. Optimized flocculation conditions reduce the ineffective consumption of flocculants, achieving a 10%-25% reduction in chemical consumption. Compared with traditional fixed flocculation tanks, it can effectively reduce head loss and overall energy consumption. It can be easily connected to the water plant's smart platform to achieve unattended, fully automated operation, greatly improving the water plant's modern management level.

[0061] In summary, the modular flocculation tank 300 provided in this embodiment integrates rapid construction, flexible adjustment, and intelligent self-adaptation, completely changing the fixed mode of traditional flocculation tanks and providing the water treatment industry with a new generation of efficient, economical, reliable, and future-oriented flocculation technology solution.

[0062] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A grid for a flocculation tank, characterized in that: The grid used in the flocculation tank includes a main body, multiple swirling vanes, and multiple first arc-shaped vanes; The body has multiple mesh openings, which are arranged in an array, and each mesh opening corresponds to multiple swirl vanes and multiple first arc-shaped vanes; In this embodiment, each of the swirling vanes corresponding to a mesh opening is connected to the upper side of the body and is spaced apart around the edge of the mesh opening. The swirling vanes bend and extend from the edge of the mesh opening toward the area outside the mesh opening. Each of the first arc-shaped vanes corresponding to a mesh opening is connected to the lower side of the body and is spaced apart around the edge of the mesh opening. The first arc-shaped vane is made of shape memory alloy. When the water temperature in contact with the first arc-shaped vane decreases, the angle between the first arc-shaped vane and the horizontal plane decreases, thereby reducing the flow area of ​​the mesh and also reducing the size of the vortex.

2. The grid for flocculation tanks according to claim 1, characterized in that: The mesh is hexagonal, and the mesh corresponds to the six swirl vanes and the six first arc-shaped vanes; Each edge of the upper end of the mesh is provided with a corresponding swirl vane, and each edge of the lower end of the mesh is provided with a corresponding first arc-shaped vane.

3. The grid for flocculation tanks according to claim 1, characterized in that: The first arc-shaped wing is made of a nickel-titanium-based shape memory alloy and is used to oscillate between 45 degrees and 15 degrees when the water temperature it contacts changes within its phase transition temperature range.

4. A flocculation module, characterized in that: The flocculation module includes a fixed grid for a flocculation tank, movable components, and a grid for a flocculation tank as described in any one of claims 1-3; The grid for the flocculation tank is located above the fixed grid for the flocculation tank and is movably connected to the fixed grid for the flocculation tank via the movable component; The fixed grid of the flocculation tank has a through hole, and the first arc-shaped wing of the grid of the flocculation tank extends through the through hole to the side of the fixed grid of the flocculation tank away from the grid of the flocculation tank. The movable component is used to drive the flocculation tank grid to move relative to the fixed flocculation tank grid under the action of an external force, so that the mesh openings on the flocculation tank grid are directly opposite the through holes on the fixed flocculation tank grid, or the mesh openings on the flocculation tank grid are staggered with the through holes on the fixed flocculation tank grid.

5. The flocculation module according to claim 4, characterized in that: The fixed grid of the flocculation tank is provided with a second arc-shaped wing on the side facing away from the grid of the flocculation tank; When the mesh openings on the grid for the flocculation tank are aligned with the through holes on the fixed grid for the flocculation tank, the first arc-shaped wing and the second arc-shaped wing are sequentially arranged along the outer edge of the through holes.

6. The flocculation module according to claim 5, characterized in that: Both the mesh and the through holes are hexagonal holes, and the mesh corresponds to six of the swirl vanes and two of the first arc-shaped vanes. Each edge of the upper end of the mesh corresponds to one of the swirl vanes; the lower end of the through holes is provided with four of the second arc-shaped vanes. When the mesh openings on the grid for the flocculation tank are aligned with the through holes on the fixed grid for the flocculation tank, each edge at the lower end of the through hole corresponds to either a first arc-shaped wing or a second arc-shaped wing.

7. The flocculation module according to claim 4, characterized in that: The movable components include a slide rail, a rotating connecting seat, a transmission rod, a movable block, and a drive rod; The slide rail is connected to the flocculation tank by a fixed mesh, and the flocculation tank is slidably connected to the slide rail by the mesh; the rotating connecting seat is connected to the flocculation tank by a mesh. The transmission rod is rotatably connected to the rotating connecting seat, and the transmission rod is threadedly engaged with the movable block connected to the grid of the flocculation tank; The drive rod is rotatably connected to the flocculation tank by a fixed mesh and is also connected to the transmission rod. The drive rod is used to rotate under the action of external force, and drives the transmission rod to rotate, thereby causing the movable block and the flocculation tank mesh to slide relative to the slide rail. The direction in which the flocculation tank mesh slides relative to the slide rail is horizontal.

8. A modular flocculation tank, characterized in that: The modular flocculation tank includes multiple vertical shafts, which are arranged in an array or side by side, and the multiple vertical shafts are connected along the flow direction; Each of the vertical shafts is equipped with a plurality of flocculation modules as described in any one of claims 4-6, the plurality of flocculation modules being spaced vertically apart and horizontally arranged.

9. The assembled flocculation tank according to claim 8, characterized in that: Two adjacent vertical shafts along the flow direction are connected by flow passages provided at the critical point of the two vertical shafts, and the flow passages increase in size sequentially along the flow direction.

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