Reinforced micro-vortex flocculation device

Abstract

The utility model relates to the technical field of water treatment, in particular to a reinforced micro-vortex flocculation device, which comprises a top micro-vortex plate, a middle micro-vortex plate, a bottom micro-vortex plate and a plurality of support pipes, and the top micro-vortex plate, the middle micro-vortex plate and the bottom micro-vortex plate are arranged in parallel. The plurality of supporting pipes are connected between the top micro-vortex plate and the middle micro-vortex plate, the plurality of supporting pipes are connected between the middle micro-vortex plate and the bottom micro-vortex plate, the top micro-vortex plate, the middle micro-vortex plate and the bottom micro-vortex plate are respectively provided with a plurality of micro-vortex forming holes, and the hole diameters in each plate are the same. According to the utility model, an increased flow velocity gradient can be built in the device to form a gradient of turbulence intensity so as to provide sufficient reaction power, and an increased gradient of micro vortex scale is built in the flocculation reactor along the water flow direction, so that the formed floc is prevented from being damaged, and the flocculation reaction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, specifically to an enhanced micro-vortex flocculation device. Background Technology

[0002] Flocculation is one of the most core and commonly used processes in water treatment. Flocculation is divided into hydraulic flocculation and mechanical flocculation. Among hydraulic flocculation processes, baffle flocculation is the most widely used. Baffle flocculation utilizes multiple sets of baffles installed in the tank to create vortices in the water flow, creating a turbulent flow state to achieve particle collision and floc growth. Baffle flocculation has advantages such as good flocculation effect, short flocculation time, and small footprint.

[0003] In engineering, the average G-value of the flocculation tank, calculated using Camp theory and formulas, is generally used to characterize the turbulence intensity of the water flow in the flocculation tank. However, the average G-value only represents the spatial average energy dissipation rate and cannot reflect the local energy dissipation rate of the flow field. Modern flocculation theory proposes using the vortex G-value instead of the average G-value to more accurately characterize the flocculation effect. Kolmgoroff's micro-vortex theory suggests that the larger the vortex G-value, the smaller the vortex size generated in the fluid; conversely, the smaller the vortex G-value, the larger the vortex size generated. When the vortex size is close to the floc size, the flocculation reaction is most complete and the flocculation effect is optimal. When the vortex size exceeds this value, the turbulence of the water flow is insufficient to provide the energy required for flocculation. Conversely, when the vortex size is below this value, excessive water flow shear force will shear and break up the flocs.

[0004] Studies have shown that the initial and later sizes of flocs are both around 1×10⁻⁶. -5 m and 6×10 -4 The vortex size of the flocculation tank is approximately 1 × 10 m, meaning the vortex size ranges from 1 × 10 m. -5 m gradually increases to 6×10 -4 The flocculation effect is best at m. Hydraulic flow field simulation analysis of the relatively bent plate section and the parallel bent plate section of a traditional baffle flocculation tank shows that the vortex scale of both sections is basically concentrated at 1×10⁻⁶. -4 Up to 2×10 -4 Between m and m, the vortex size is relatively large compared to the initial size of the flocs, which has limited effect on improving the efficiency and effectiveness of the initial flocculation reaction.

[0005] To address the issue of large vortex sizes in plate flocculation tanks, Chinese Patent Publication No. CN213294809U discloses a "micro-vortex flocculation device and flocculation system," comprising a frame and micro-vortex plates installed within the frame. Each micro-vortex plate is inclined and multiple plates are spaced apart within the frame. Several polygonal holes are formed on the micro-vortex plates, allowing water to pass through them. The water flow changes direction multiple times, forming micro-vortices behind the micro-vortex plates, thereby improving the flocculation effect. This micro-vortex flocculation device can generate numerous micro-vortices, creating favorable hydraulic conditions for the flocculation reaction. However, because the micro-vortex holes have uniform apertures, the resulting micro-vortexes in the water flow are essentially the same size. This makes it impossible to form vortices with progressively increasing sizes according to the floc growth pattern, and thus cannot precisely meet the vortex size requirements of each flocculation stage. Utility Model Content

[0006] The purpose of this invention is to provide an enhanced micro-vortex flocculation device to solve the technical problem that existing micro-vortex flocculation equipment cannot form vortices with progressively increasing sizes according to the growth law of flocs, and cannot accurately meet the requirements of vortex size at each flocculation stage. The specific technical solution is as follows:

[0007] This utility model provides an enhanced micro-vortex flocculation device, including a top micro-vortex plate, a middle micro-vortex plate, a bottom micro-vortex plate, and multiple support pipes. The top, middle, and bottom micro-vortex plates are arranged in parallel. Multiple support pipes are connected between the top and middle micro-vortex plates, and between the middle and bottom micro-vortex plates. Each of the top, middle, and bottom micro-vortex plates has multiple micro-vortex forming holes, and the inner diameter of each plate is the same.

[0008] A further improvement of this utility model of enhanced micro vortex flocculation device is that the multiple micro vortex forming holes on the top micro vortex plate are evenly distributed, and the micro vortex forming holes in adjacent rows are staggered. The micro vortex forming holes of the top micro vortex plate, the middle micro vortex plate, the middle micro vortex plate, and the bottom micro vortex plate are staggered in the water flow direction.

[0009] A further improvement of this utility model of enhanced micro vortex flocculation device is that both sides of the top micro vortex plate and the bottom micro vortex plate extend outward to form extension plates, the extension plates bend toward one side of the middle micro vortex plate, and bolt holes for installation are provided on the extension plates.

[0010] A further improvement of this utility model of enhanced micro vortex flocculation device is that the distance between the top micro vortex plate and the middle micro vortex plate is the same as the distance between the middle micro vortex plate and the bottom micro vortex plate, and the distance is between 75 and 150 mm.

[0011] A further improvement of this utility model's enhanced micro-vortex flocculation device is that the micro-vortex forming hole is circular or a regular polygon, and the regular polygon has no fewer than four sides.

[0012] A further improvement of this utility model of enhanced micro-vortex flocculation device is that the diameter of the micro-vortex forming hole is between 50 and 150 mm.

[0013] A further improvement of this utility model of enhanced micro-vortex flocculation device is that the materials of the top micro-vortex plate, the middle micro-vortex plate, the bottom micro-vortex plate and the support pipe are all carbon steel or stainless steel.

[0014] The application of the technical solution of this utility model has the following beneficial effects:

[0015] (1) This invention can form micro vortices of basically uniform size inside the device, thereby increasing the number of micro vortices that effectively promote flocculation reaction. In addition, it creates an increasing velocity gradient inside the device to form a gradient of turbulence intensity, which can provide sufficient reaction power and improve the efficiency of floc collision and flocculation reaction.

[0016] (2) The micro vortex forming holes of two adjacent rows on the same micro vortex plate are staggered. The micro vortex forming holes of two adjacent micro vortex plates are staggered in the direction of water flow. When the water flows through the enhanced micro vortex flocculation device, the velocity vector needs to be changed continuously, which can increase the collision probability of particles in the water flow, improve the utilization rate of the reagent particles, and improve the reaction efficiency.

[0017] (3) The enhanced micro vortex flocculation device has a simple structure, is easy to process, has a good flocculation effect, high efficiency, and is not prone to sludge accumulation and blockage, and basically requires no inspection and maintenance.

[0018] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of the enhanced micro-vortex flocculation device of this utility model;

[0021] Figure 2 This is an unfolded view of the top microvortex plate of the enhanced microvortex flocculation device of type A of this utility model;

[0022] Figure 3This is a plan view of the central microvortex plate of the Type A enhanced microvortex flocculation device of this utility model;

[0023] Figure 4 This is an unfolded view of the top microvortex plate of the enhanced microvortex flocculation device of type A of this utility model;

[0024] Figure 5 This is an unfolded view of the top microvortex plate of the enhanced microvortex flocculation device of type B of this utility model.

[0025] Figure 6 This is a plan view of the central microvortex plate of the enhanced microvortex flocculation device of type B of this utility model.

[0026] Figure 7 This is an unfolded view of the top microvortex plate of the enhanced microvortex flocculation device of type B of this utility model.

[0027] Figure 8 This is an unfolded view of the top microvortex plate of the C-type enhanced microvortex flocculation device of this utility model;

[0028] Figure 9 This is a plan view of the central microvortex plate of the C-type enhanced microvortex flocculation device of this utility model;

[0029] Figure 10 This is an unfolded view of the top microvortex plate of the C-type enhanced microvortex flocculation device of this utility model;

[0030] Figure 11 This is an unfolded view of the top microvortex plate of the D-type enhanced microvortex flocculation device of this utility model.

[0031] Figure 12 This is a plan view of the central microvortex plate of the D-type enhanced microvortex flocculation device of this utility model;

[0032] Figure 13 This is an unfolded view of the top microvortex plate of the D-type enhanced microvortex flocculation device of this utility model.

[0033] Among them, 1. Enhanced micro vortex flocculation device; 2. Top micro vortex plate; 3. Middle micro vortex plate; 4. Bottom micro vortex plate; 5. Micro vortex forming hole; 6. Support pipe; 7. Extension plate; 8. Bolt hole. Detailed Implementation

[0034] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0035] See Figures 1 to 13As shown, an enhanced micro-vortex flocculation device 1 includes a top micro-vortex plate 2, a middle micro-vortex plate 3, a bottom micro-vortex plate 4, and multiple support pipes 6. The top micro-vortex plate 2, the middle micro-vortex plate 3, and the bottom micro-vortex plate 4 are arranged in parallel. Multiple support pipes 6 connect the top micro-vortex plate 2 and the middle micro-vortex plate 3, and also connect the middle micro-vortex plate 3 and the bottom micro-vortex plate 4. Each of the top micro-vortex plate 2, the middle micro-vortex plate 3, and the bottom micro-vortex plate 4 has multiple micro-vortex forming holes 5, and the hole diameter is the same on each plate. After water flows through the enhanced micro-vortex flocculation device 1, micro-vortices of various scales and scale gradients are formed inside. By setting different hole diameters and opening ratios, micro-vortices that meet the flocculation reaction requirements at each stage can be formed, improving the flocculation reaction effect and efficiency.

[0036] The enhanced micro-vortex flocculation device 1 of this invention is installed in the water flow channel within a flocculation reactor, thereby forming micro-vortices of various sizes within the reactor and significantly increasing the number of effective micro-vortices. Within a single device, the opening ratio of each plate gradually decreases along the water flow direction, while the flow velocity gradually increases. This creates a growth gradient of turbulent energy within the device, addressing the problems of existing micro-vortex flocculation devices, such as excessively large vortex sizes, narrow vortex size ranges, insufficient number of effective micro-vortices, failure to meet floc growth requirements, and the need for further improvement in flocculation efficiency and effectiveness.

[0037] Specifically, the installation method of the enhanced micro-vortex flocculation device 1 is as follows: Figure 1 As shown, the central micro vortex plate 3 is installed at a 45° angle to the horizontal plane. One to three such plates can be installed as needed. The spacing between adjacent micro vortex plates is generally 75 to 150 mm. In this embodiment, the spacing is 100 mm. The diameter of the support tube 6 is φ15 to 20 mm. In this embodiment, the diameter is φ20 mm.

[0038] Preferably, the multiple micro-vortex forming holes 5 on the top micro-vortex plate 2 are evenly distributed, with adjacent rows of micro-vortex forming holes 5 staggered. The micro-vortex forming holes 5 on the top micro-vortex plate 2, the middle micro-vortex plate 3, and the middle micro-vortex plate 3 and the bottom micro-vortex plate 4 are staggered in the water flow direction, so that the flow velocity vector of the water continuously changes as it passes through each micro-vortex plate, thereby increasing the probability of particle collision. Furthermore, the micro-vortex forming holes 5 of each micro-vortex plate in the same enhanced micro-vortex flocculation device 1 have the same aperture, so as to form micro-vortices of basically uniform size inside the device, increasing the number of micro-vortices that can promote flocculation. Moreover, the number of openings of the micro-vortex plates of the enhanced micro-vortex flocculation device 1 passing sequentially along the water flow direction decreases sequentially, the opening ratio gradually decreases, and the water flow through-hole velocity gradually increases, creating a growing velocity gradient to form a gradient of turbulence intensity, providing sufficient reaction power for the gradually growing flocs.

[0039] Preferred, such as Figure 1 and Figure 2 As shown, both sides of the top micro-vortex plate 2 and the bottom micro-vortex plate 4 extend outward to form extension plates 7. These extension plates 7 bend towards one side of the middle micro-vortex plate 3, and bolt holes 8 for installation are provided on the extension plates 7. Specifically, the width of the extension plates 7 of the top micro-vortex plate 2 and the bottom micro-vortex plate 4 is 100mm, and they are bent 90° outwards. Figure 2 As shown, the extension plate 7 is bent 90° along line A, and bolt holes 8 are evenly opened on it with a diameter of φ12~20mm. The extension plate 7 and bolt holes 8 are used to install and fix the enhanced micro vortex flocculation device 1 on the pool wall on both sides of the water flow channel of the relative folded plate section and the parallel folded plate section.

[0040] Preferably, the distance between the top micro-vortex plate 2 and the middle micro-vortex plate 3 is the same as the distance between the middle micro-vortex plate 3 and the bottom micro-vortex plate 4, and the distance is between 75 and 150 mm. Adjacent micro-vortex plates are fixed together by support tubes 6 with a length equal to the designed plate spacing. The diameter of the support tubes 6 is φ15-20 mm. The support tubes 6 are arranged around the micro-vortex plates and in the middle, which can fix the micro-vortex plates together while avoiding deformation due to excessive plate area.

[0041] Preferably, the micro-vortex forming hole 5 is circular or a regular polygon, and the regular polygon has no fewer than four sides.

[0042] Preferably, the diameter of the micro-vortex forming hole 5 is between 50 and 150 mm.

[0043] Preferably, the top micro vortex plate 2, the middle micro vortex plate 3, the bottom micro vortex plate 4, and the support tube 6 are all made of carbon steel or stainless steel, and each micro vortex plate and the support tube 6 can be connected by welding.

[0044] Furthermore, such as Figures 2 to 13As shown, when using the enhanced micro-vortex flocculation device 1 of this utility model, different pore sizes and opening ratios of enhanced micro-vortex flocculation devices 1 can be set at different flocculation reaction stages or upstream and downstream of the same flocculation reaction stage. The pore size of the enhanced micro-vortex flocculation device 1 in the relatively folded plate section of the flocculation reactor can preferably be 50-100 mm, and the average opening ratio can preferably be 30%-50%. The pore size of the enhanced micro-vortex flocculation device 1 in the parallel folded plate section of the flocculation reactor can preferably be 100-150 mm, and the average opening ratio can preferably be 50%-70%. The pore size and opening ratio of the enhanced micro-vortex flocculation devices 1 arranged sequentially along the water flow direction within the same flocculation reaction stage can be the same, or they can be arranged in an arithmetic sequence from small to large within the recommended range of the corresponding reaction section. The specific arithmetic value is determined by the number of devices. An enhanced micro-vortex flocculation device 1 with gradually increasing aperture and porosity is set along the process flow, so that micro-vortices with relatively small scale and relatively large turbulent energy are formed in the relatively folded plate section, and micro-vortices with relatively large scale and relatively small turbulent energy are formed in the parallel folded plate section, thus creating ideal hydraulic conditions for flocculation reaction at each stage.

[0045] In use, this invention employs enhanced micro-vortex flocculation devices 1 with different pore sizes and average opening ratios in the relative baffle section and parallel baffle section of the flocculation reactor. In this embodiment, the relative baffle section is divided into two segments. The first segment is equipped with four sets of type A enhanced micro-vortex flocculation devices 1. The pore size of the micro-vortex forming holes 5 on the vortex plates is φ60mm. In the direction of water flow, the top micro-vortex plate 2 has 114 holes evenly distributed, with an opening ratio of approximately 35%; the middle micro-vortex plate 3 has 105 holes evenly distributed, with an opening ratio of approximately 30%; and the bottom micro-vortex plate 4 has... There are 95 holes, with an opening rate of about 25%. The average opening rate of the Type A enhanced micro-vortex flocculation device 1 is 30%. In the second section, which is opposite to the folded plate section, there are four sets of Type B enhanced micro-vortex flocculation devices 1. The diameter of the micro-vortex forming holes 5 opened on the vortex plate is φ80mm. In the direction of water flow, there are 86 holes evenly opened on the top micro-vortex plate 2, with an opening rate of about 45%; there are 76 holes evenly opened on the middle micro-vortex plate 3, with an opening rate of about 40%; and there are 67 holes evenly opened on the bottom micro-vortex plate 4, with an opening rate of about 35%. The average opening rate of the Type B enhanced micro-vortex flocculation device 1 is 40%.

[0046] In this system, the micro-vortex forming holes 5 within the same baffle reaction section of the enhanced micro-vortex flocculation device 1 have the same aperture, which can form micro-vortices of basically the same size. By controlling the aperture size, it is beneficial to increase the number of micro-vortices in the flocculation reaction. The number of micro-vortex forming holes 5 along the water flow direction in each set of enhanced micro-vortex flocculation devices 1 gradually decreases, the opening ratio gradually decreases, and the flow velocity gradually increases when the water flows through the enhanced micro-vortex flocculation device 1, forming a gradually increasing turbulence intensity gradient, which improves the efficiency of floc collision and flocculation reaction.

[0047] In this embodiment, the parallel folding plate section is divided into two sections. The first parallel folding plate section is equipped with four sets of C-shaped enhanced micro-vortex flocculation devices 1. The diameter of the micro-vortex forming holes 5 opened on the vortex plates is φ100mm. In the direction of water flow, the top micro-vortex plate 2 has 67 holes evenly distributed, with an opening rate of about 55%; the middle micro-vortex plate 3 has 57 holes evenly distributed, with an opening rate of about 50%; and the bottom micro-vortex plate 4 has 48 holes evenly distributed, with an opening rate of about 45%. The C-shaped enhanced micro-vortex flocculation device 1 has four sets of C-shaped enhanced micro-vortex flocculation devices 1. The average opening rate is 50%; the second section, relative to the folded plate section, is equipped with four sets of D-type enhanced micro vortex flocculation devices 1. The diameter of the micro vortex forming holes 5 opened on the vortex plate is φ120mm. In the direction of water flow, there are 57 holes evenly opened on the top micro vortex plate 2, with an opening rate of about 65%; there are 48 holes evenly opened on the middle micro vortex plate 3, with an opening rate of about 60%; and there are 38 holes evenly opened on the bottom micro vortex plate 4, with an opening rate of about 55%. The average opening rate of the D-type enhanced micro vortex flocculation device 1 is 60%.

[0048] In this embodiment, a reinforced micro-vortex flocculation device 1 with smaller pore size and opening ratio is set in the relatively folded plate section, which can form micro-vortices with relatively small scale, relatively large turbulent energy, and relatively strong disturbance in the relatively folded plate section; a reinforced micro-vortex flocculation device with smaller pore size and opening ratio is set in the parallel folded plate section, which can form micro-vortices with relatively large scale, relatively small turbulent energy, and relatively weak disturbance in the parallel folded plate section; providing optimal flocculation hydraulic conditions for each flocculation stage, maximizing the fit with the microscopic mechanism of floc growth, improving flocculation reaction efficiency and effect, reducing flocculation time, and reducing flocculant dosage.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for enhancing micro-vortex flocculation, characterized in that, It includes a top micro vortex plate (2), a middle micro vortex plate (3), a bottom micro vortex plate (4), and multiple support tubes (6). The top micro vortex plate (2), the middle micro vortex plate (3), and the bottom micro vortex plate (4) are arranged in parallel. Multiple support tubes (6) are connected between the top micro vortex plate (2) and the middle micro vortex plate (3), and multiple support tubes (6) are connected between the middle micro vortex plate (3) and the bottom micro vortex plate (4). Multiple micro vortex forming holes (5) are opened on the top micro vortex plate (2), the middle micro vortex plate (3), and the bottom micro vortex plate (4), and the inner diameter of each plate is the same.

2. The enhanced micro-vortex flocculation device according to claim 1, characterized in that, The multiple micro-vortex forming holes (5) on the top micro-vortex plate (2) are evenly distributed, and the micro-vortex forming holes (5) in adjacent rows are staggered. The micro-vortex forming holes (5) of the top micro-vortex plate (2), the middle micro-vortex plate (3), the middle micro-vortex plate (3), and the bottom micro-vortex plate (4) are staggered in the direction of water flow.

3. The enhanced micro-vortex flocculation device according to claim 1, characterized in that, Both sides of the top micro vortex plate (2) and the bottom micro vortex plate (4) extend outward to form extension plates (7), and the extension plates (7) bend toward one side of the middle micro vortex plate (3). Bolt holes (8) for installation are provided on the extension plates (7).

4. The enhanced micro-vortex flocculation device according to claim 1, characterized in that, The distance between the top micro vortex plate (2) and the middle micro vortex plate (3) is the same as the distance between the middle micro vortex plate (3) and the bottom micro vortex plate (4), and the distance is between 75 and 150 mm.

5. The enhanced micro-vortex flocculation device according to claim 1, characterized in that, The micro vortex forming hole (5) is circular or a regular polygon, and the regular polygon has no fewer than four sides.

6. The enhanced micro-vortex flocculation device according to claim 1, characterized in that, The diameter of the micro vortex forming hole (5) is between 50 and 150 mm.

7. The enhanced micro-vortex flocculation device according to claim 1, characterized in that, The materials of the top micro vortex plate (2), the middle micro vortex plate (3), the bottom micro vortex plate (4) and the support tube (6) are all carbon steel or stainless steel.

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