A multi-stage cyclone mixing apparatus and method

Abstract

The application relates to a multi-stage cyclone mixing device and a mixing method, and the mixing device comprises a cylinder (1), a treatment agent inlet (2), a tangential liquid inlet (3), a spray head (4) and a cyclone redistribution assembly (5); the treatment agent inlet (2) is arranged at the top of the cylinder (1) and is communicated with the spray head (4) in the cylinder (1), a plurality of cyclone redistribution assemblies (5) are sequentially arranged from top to bottom in the cylinder (1) and are located below the spray head (4), and the tangential liquid inlet (3) is arranged on the wall surface of the cylinder (1) and is used for tangentially feeding liquid to the cyclone redistribution assembly (5); the cyclone redistribution assembly (5) comprises a cyclone plate (51), a redistribution plate (52) and a flow deflection guide plate (53); the middle part of the cyclone plate (51) is provided with a liquid outlet hole (511), the redistribution plate (52) is arranged below the liquid outlet hole (511) and is connected with the flow deflection guide plate (53). Compared with the prior art, the application has the advantages of simple structure, low cost, energy saving and the like.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a multi-stage vortex mixing device and mixing method. Background Technology

[0002] Water is an indispensable substance for human activities and the development of industrialized societies. Water acts as a mass transfer medium in various industries, resulting in water produced after human production activities containing various residual chemical products or recalcitrant pollutants. Centralized water treatment methods have become relatively mature, with water treatment agents being well-developed and capable of large-scale treatment. However, technical challenges remain with the treatment devices themselves. In current agent-wastewater mixing models, the uniformity of mixing between the agent and water directly affects the treatment effect. To achieve sufficient contact between different mixtures, mechanical multi-stage stirring is typically employed. Patent CN210193438U, entitled "A Multi-Stage Mixing and Stirring Device for Wastewater Treatment," discloses a multi-stage mixing and stirring device for wastewater treatment. This device features horizontally distributed treatment modules and utilizes aeration and stirring for dual mixing to improve efficiency. Patent CN215479806U, entitled "A Fully Automatic Dosing Device with Multi-Stage Mixing Chambers," discloses a multi-chamber bidirectional mixing fully automatic dosing device. This device controls the type and proportion of chemicals added via a magnetic control valve, and achieves thorough mixing of the chemicals through a first horizontal stirring chamber and a second vertical stirring chamber. While both of these devices improve wastewater treatment efficiency, the use of multiple motors in series increases the overall energy consumption of the mixing equipment. Furthermore, electric drives pose a risk of mechanical wear and failure, resulting in high maintenance and repair costs. For large-scale chemical mixing processes, the addition of motors makes scale-up of this type of equipment difficult, requiring consideration of numerous parameters and hindering large-scale production. Summary of the Invention

[0003] The purpose of this invention is to provide a multi-stage cyclone mixing device and mixing method that saves energy.

[0004] The objective of this invention can be achieved through the following technical solution: a multi-stage cyclone mixing device, comprising a cylinder, a treatment agent inlet, a tangential liquid inlet, a spray head, and a cyclone redistribution assembly;

[0005] The treatment agent inlet is located at the top of the cylinder and is connected to the spray head inside the cylinder. Multiple swirl redistribution components are arranged sequentially from top to bottom inside the cylinder and are located below the spray head. The tangential liquid inlet is located on the cylinder wall and is used to tangentially feed liquid into the swirl redistribution components.

[0006] The swirl redistribution assembly includes a swirl plate, a redistribution plate, and a deflector plate;

[0007] The swirl plate has a liquid discharge hole in the middle, and the redistribution plate is located below the liquid discharge hole and connected to the deflection guide plate.

[0008] Preferably, the redistribution plate has a hollow conical structure that is smaller at the top and larger at the bottom, and is coaxially arranged with the liquid outlet.

[0009] More preferably, the bottom radius of the redistribution plate is larger than the radius of the liquid outlet.

[0010] More preferably, the bottom radius of the redistribution plate is 80-100cm and the height is 40-45cm.

[0011] Preferably, the deflector plate is disposed outside the redistribution plate.

[0012] Preferably, the deflector plate has downwardly extending guide ends at phases of -30 to 30° and 150 to 210°, respectively. The inclination angle of the guide ends is in the range of 5 to 45°, and the arc direction of the outer and inner edges both points to the center of the bottom surface of the redistribution plate.

[0013] Preferably, the deflector plate has a raised structure on its edge.

[0014] Preferably, the edge of the swirl plate is spliced ​​to the inner wall of the cylinder, and the redistribution plate is connected to the cylinder through a support frame.

[0015] More preferably, a steel bracket, 10-15cm long, extends from each of the four quadrant points on the bottom surface of the redistribution plate, so that it can be firmly installed on the inner wall of the cylinder.

[0016] Preferably, the redistribution plate and the deflector plate are made of corrosion-resistant stainless steel or polytetrafluoroethylene.

[0017] Preferably, in two adjacent sets of swirl redistribution components, the top of the swirl plate of the lower set of swirl redistribution components touches the bottom of the deflector plate of the upper set of swirl redistribution components.

[0018] More preferably, the bottom of the deflector plate can undergo slight deformation, and the tilt angle change cannot exceed ±0.5°.

[0019] Preferably, the liquid inlet direction of the tangential liquid inlet is the tangential direction of the outer edge of the swirl plate of the uppermost swirl redistribution component, and the pipe opening is cut with a certain arc so that the outer edge of the pipe opening just fits with the outer edge of the swirl plate.

[0020] Preferably, the tangential liquid inlet is made of stainless steel or polytetrafluoroethylene.

[0021] Preferably, the spray head is an annular spray head, with multiple nozzles arranged on its upper ring, and the diameter of the liquid outlet is smaller than the diameter of the annular ring formed by the nozzle distribution.

[0022] Preferably, the bottom of the cylinder is provided with a liquid outlet, which is an inverted hollow frustum with an opening at the bottom.

[0023] More preferably, the bottom radius of the frustum is 35-50 cm, and the top radius is the same as the outer diameter of the cylinder.

[0024] More preferably, the distance between the bottom opening and the top of the frustum is 60-65 cm.

[0025] More preferably, the liquid outlet is made of stainless steel or polytetrafluoroethylene.

[0026] Preferably, the outer diameter of the cylinder is 100-150cm, the length of the cylinder is 500-650cm, the thickness is 1.5-2.5cm, the outer diameter of the internal swirl plate is similar to the inner diameter of the cylinder, and the cylinder has equally spaced grooves embedded inside to facilitate the installation of the swirl plate.

[0027] Preferably, the swirl plate is made of ceramic material.

[0028] A multi-stage swirl mixing method, using the above-mentioned mixing equipment, includes the following steps:

[0029] S1: Open the treatment agent inlet and tangential liquid inlet, so that the treatment agent drips from the spray head, and the solvent or wastewater flows from the tangential liquid inlet to the swirl plate of the uppermost swirl redistribution component;

[0030] S2: After the treatment agent and solvent or wastewater are mixed on the uppermost swirl plate, they flow out from the lower liquid hole, are divided by the redistribution plate, and fall back onto the lower swirl plate through the deflector plate. After repeated operation, a multi-stage mixing process of distribution-diversion-redistribution is achieved.

[0031] Preferably, the flow rate of the solvent or wastewater in step S1 is 1.0 to 1.5 m / s.

[0032] Preferably, the treatment agent includes liquid Fenton oxidant, sodium persulfate solution, or calcium oxide suspension.

[0033] An application of the above-mentioned multi-stage cyclone mixer is to use the equipment for the preparation of pharmaceutical solutions or for wastewater treatment.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. The mixing device of the present invention makes full use of the initial kinetic energy and gravitational potential energy of the fluid, thereby increasing energy utilization efficiency, reducing fixed energy consumption, and saving energy;

[0036] 2. The mixing equipment of the present invention does not require mechanical driving agitation, thus avoiding the drawbacks of conventional mechanical mixing equipment, such as difficulty in scaling up, high maintenance costs, and high energy consumption;

[0037] 3. This invention can cleverly utilize the gravitational potential energy of the fluid, combined with the centripetal force generated by the tangential velocity, to cause the fluid to swirl within the equipment. Through the synergistic effect of multi-stage redistribution plates and guide plates, the fluid and the treatment agent are fully mixed.

[0038] 4. This invention has a simple structure, low cost, and saves energy;

[0039] 5. The mixing device of the present invention is easy to install, and it performs vertical graded mixing, which occupies less space and allows multiple devices to be used in parallel;

[0040] 6. The mixing device of the present invention can perform multi-stage diversion plates and redistribution plates in series, and the number of graded plates can be freely set according to actual needs, which is flexible and convenient. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of the multi-stage cyclone mixing device of the present invention;

[0042] Figure 2 This is a schematic diagram of the swirl redistribution component of the present invention;

[0043] Figure 3 This is a contact diagram of the upper and lower swirl redistribution components of the present invention;

[0044] Figure 4 This is a schematic diagram of the tangential liquid inlet of the present invention;

[0045] In the figure: 1-Cylinder, 2-Treatment agent inlet, 3-Tangential liquid inlet, 4-Spray head, 41-Nozzle, 5-Swirl redistribution assembly, 51-Swirl plate, 511-Liquid outlet, 52-Redistribution plate, 53-Deflection guide plate, 54-Support frame, 6-Liquid outlet. Detailed Implementation

[0046] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0047] Example 1

[0048] A multi-stage swirling mixing device includes a cylinder 1 and a treatment agent inlet 2, a tangential liquid inlet 3, a spray head 4, and a swirling redistribution assembly 5 disposed on the cylinder 1.

[0049] The top of the cylinder 1 is provided with a treatment agent inlet 2, which is connected to a spray head 4 located inside the cylinder 1. Multiple swirl redistribution components 5 are arranged from top to bottom inside the cylinder 1 below the spray head 4. The wall of the cylinder 1 is connected to a tangential liquid inlet 3 for tangentially feeding liquid into the uppermost swirl redistribution component 5.

[0050] In this embodiment, the swirl redistribution assembly 5 includes a swirl plate 51, a redistribution plate 52, and a deflection guide plate 53. The swirl plate 51 has a liquid discharge hole 511 in the middle, and the redistribution plate 52 is located below the liquid discharge hole 511 and connected to the deflection guide plate 53.

[0051] Example 2

[0052] A multi-stage swirl mixing device, wherein the redistribution plate 52 in each swirl redistribution component 5 is coaxially arranged with the liquid outlet 511, and has a conical structure with a smaller upper part and a larger lower part. The bottom radius is larger than the radius of the liquid outlet 511. When the liquid on the swirl plate 51 flows down from the central liquid outlet 511, it is dispersed by the redistribution plate 52 and then flows to the lower swirl plate 51 through the deflection guide plate 53.

[0053] Furthermore, in this embodiment, the spray head 4 is an annular spray head, with multiple nozzles 41 arranged on its upper ring. The diameter of the liquid discharge hole 511 is smaller than the diameter of the annular ring formed by the nozzle distribution. When the treatment agent drips from the spray head, it will fall onto the swirl plate 511 under the action of gravity. The rest is the same as in Embodiment 1.

[0054] The equipment in this embodiment can be used for wastewater treatment, and the specific methods include:

[0055] S1: Open the treatment agent inlet 2 and the tangential liquid inlet 3, so that the treatment agent drips from the spray head 4 and the sewage flows from the tangential liquid inlet 3 to the swirl plate 51 of the uppermost swirl redistribution component 5;

[0056] S2: After the treatment agent and sewage are mixed on the uppermost swirl plate 51, they flow out from the lower liquid hole 511, are diverted from the redistribution plate 52, and fall back onto the lower swirl plate 51 through the deflector plate 53. After repeated operation, a multi-stage mixing process of distribution-diversion-redistribution is achieved.

[0057] In this embodiment, the treatment agent is sprayed in a ring shape from the nozzle and mixed with the water flow that enters tangentially on the uppermost swirl plate. The water flow flows down from the central water hole in a vortex shape, is dispersed by the redistribution plate, and then flows to the second-stage swirl plate. Due to inertia, vortices are still generated. Through multi-stage mixing, the purpose of uniform mixing is achieved without mechanical stirring.

[0058] Example 3

[0059] A multi-stage swirling mixing device for preparing pharmaceutical solutions includes a cylindrical body 1, a treatment agent inlet 2, a tangential liquid inlet 3, an annular spray head 4, a swirling plate support frame 54, a redistribution plate 52, a deflector plate 53, a liquid outlet 6, multi-stage swirling plates 51, a liquid discharge hole 511, and a nozzle 41. The cylindrical body 1 has the treatment agent inlet 2 at the top, the tangential liquid inlet 3, and the liquid outlet 6 at the bottom. The multi-stage swirling plates 51 have a liquid discharge hole 511 in the middle, and the edges of the swirling plates 51 are directly spliced ​​to the inner wall of the cylindrical body 1. The redistribution plate 52 is connected to the swirling plate support frame 52, and the swirling plate support frame 54 is also connected and fixed to the cylindrical body 1. The annular spray head 4 is connected to the treatment agent inlet 2 and located above the tangential liquid inlet 3. The multi-stage swirling plates 51 and the redistribution plate 52 are evenly and alternately distributed from top to bottom within the cylindrical body 1.

[0060] Specifically, the mixing device cylinder 1 has an outer diameter of 150cm, a length of 600cm, and a thickness of 2cm. The outer diameter of the internal multi-stage swirl plate 51 is approximately the same as the inner diameter of the cylinder. The cylinder 1 can have equally spaced grooves embedded inside to facilitate the installation of the swirl plate. Furthermore, the multi-stage swirl plate 51 is made of ceramic material, which is corrosion-resistant and has a porous surface, thus increasing the mixing surface area, forming tiny mixing points, and enhancing the mixing effect at the distributor plate.

[0061] Specifically, the redistribution plate 52 has a cone bottom radius of 95cm and a height of 45cm. A deflector plate 53 is installed on the outside of the redistribution plate. The deflector plate has downward-extending guide ends at phases of -30° to 30° and 150° to 210°, with an inclination angle of 15°. The arc direction of both the outer and inner edges points towards the center of the bottom surface of the redistribution plate 52. A 15cm long steel bracket extends from each of the four quadrants of the bottom surface of the redistribution plate 52, ensuring its secure installation on the inner wall of the cylinder 1. The redistribution plate 52 and the deflector plate 53 are made of corrosion-resistant stainless steel with a smooth surface, allowing the mixture to easily slide down to the lower swirl plate 51.

[0062] Specifically, the multi-stage swirl plates 51 and redistribution plates 52 are arranged alternately, wherein the distance between the top of the upper multi-stage swirl plate 51 and the bottom of the redistribution plate 52 is exactly the height of the cone of the redistribution plate 52; for example Figure 3 As shown, the bottom of the flow guide plate 53 connected to the lower multi-stage swirl plate 51 and the upper redistribution plate 52 just touches each other to ensure that the mixture can continue to swirl to the lower layer and further mix with the repair agent (treatment agent).

[0063] Specifically, the liquid inlet direction of the tangential liquid inlet 3 is the tangential direction of the outer edge of the multi-stage swirl plate 51, such as... Figure 4 As shown, the pipe opening is cut with a certain arc so that the outer edge of the pipe opening just fits against the outer edge of the multi-stage vortex plate. Furthermore, the tangential liquid inlet is made of stainless steel.

[0064] Specifically, outlet 6 is an inverted hollow frustum with a bottom radius of 35cm and a top radius consistent with the outer diameter of the cylinder. The bottom of the frustum is open, with a distance of 65cm between the opening and the top. Outlet 6 is made of stainless steel.

[0065] The working principle and usage process of the mixing device in this embodiment are as follows: During use, the operator can simultaneously open the valves of the treatment agent inlet 2 and the tangential liquid inlet 3. After pre-mixing, the treatment agent drips from the annular spray head 4 to the first-stage vortex plate 51, where it mixes with the solvent introduced through the tangential liquid inlet 3. Subsequently, after the agent and solvent are mixed on the first-stage vortex plate, they flow out from the lower liquid hole 511, are diverted from the redistribution plate 52, and fall back into the second-stage vortex plate 51 through the deflector plate 53. After repeated operations, a multi-stage mixing process of distribution-diversion-redistribution is achieved. Throughout the process, the liquid spirals downward, relying on the initial power and the special internal structure. After the multi-stage vortex mixing is completed, the sample flows out along the liquid outlet 6, resulting in a fully mixed repair agent solution.

[0066] To address the problems of high energy consumption and difficulty in planned processing of existing mechanical mixing equipment, this invention develops a multi-stage swirling mixing device that relies on the initial momentum and gravitational potential energy of the fluid to provide hybrid power. This device cleverly utilizes the fluid's gravitational potential energy, combined with the centripetal force generated by tangential velocity, to cause the fluid to swirl within the device. Through the synergistic effect of multi-stage redistribution plates and guide plates, the fluid and the treatment agent are thoroughly mixed.

[0067] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. A multi-stage cyclone mixing device, characterized in that, It includes a cylinder (1), a treatment agent inlet (2), a tangential liquid inlet (3), a spray head (4), and a swirl redistribution assembly (5); The treatment agent inlet (2) is located at the top of the cylinder (1) and communicates with the spray head (4) inside the cylinder (1). Multiple swirling redistribution components (5) are arranged sequentially from top to bottom inside the cylinder (1) and located below the spray head (4). The tangential liquid inlet (3) is located on the wall of the cylinder (1) for tangential liquid inlet to the swirling redistribution components (5). The swirl redistribution assembly (5) includes a swirl plate (51), a redistribution plate (52), and a deflector plate (53); The swirl plate (51) has a liquid discharge hole (511) in the middle, and the redistribution plate (52) is located below the liquid discharge hole (511) and connected to the deflection guide plate (53).

2. The multi-stage cyclone mixer according to claim 1, characterized in that, The redistribution plate (52) has a conical structure with a smaller top and a larger bottom, and is coaxially arranged with the lower liquid hole (511).

3. The multi-stage cyclone mixer according to claim 2, characterized in that, The redistribution plate (52) has a bottom radius of 80-100cm and a height of 40-45cm.

4. The multi-stage cyclone mixer according to claim 1, characterized in that, The deflector plate (53) has downwardly extending guide ends at phases of -30 to 30° and 150 to 210° respectively. The inclination angle of the guide ends is 5 to 45°, and the arc direction of the outer and inner edges both point to the center of the bottom surface of the redistribution plate (52).

5. The multi-stage cyclone mixer according to claim 1, characterized in that, The edge of the swirl plate (51) is spliced ​​to the inner wall of the cylinder (1), and the redistribution plate (52) is connected to the cylinder (1) through the support frame (54).

6. The multi-stage cyclone mixer according to claim 1, characterized in that, In two adjacent sets of swirling redistribution components (5), the top of the swirling plate (51) of the lower set of swirling redistribution components (5) touches the bottom of the deflector plate (53) of the upper set of swirling redistribution components (5).

7. The multi-stage cyclone mixer according to claim 1, characterized in that, The liquid inlet (3) is in the tangential direction of the outer edge of the swirl plate (51) of the uppermost swirl redistribution component (5). The pipe opening is cut with a certain arc so that the outer edge of the pipe opening just fits with the outer edge of the swirl plate (51).

8. The multi-stage cyclone mixer according to claim 1, characterized in that, The spray head (4) is an annular spray head with multiple nozzles (41) on its upper ring, and the diameter of the liquid outlet (511) is smaller than the diameter of the annular ring formed by the nozzle distribution.

9. The multi-stage cyclone mixer according to claim 1, characterized in that, The bottom of the cylinder (1) is provided with a liquid outlet (6), which is an inverted hollow frustum with an opening at the bottom.

10. A multi-stage swirling mixing method, characterized in that, Using the mixing apparatus according to any one of claims 1 to 9, the process includes the following steps: S1: Open the treatment agent inlet (2) and the tangential liquid inlet (3) so that the treatment agent drips from the spray head (4) and the solvent or sewage flows from the tangential liquid inlet (3) to the swirl plate (51) of the uppermost swirl redistribution component (5); S2: After the treatment agent and solvent or wastewater are mixed on the uppermost swirl plate (51), they flow out from the lower liquid hole (511), are diverted from the redistribution plate (52), and fall back onto the lower swirl plate (51) through the deflection guide plate (53). After repeated operation, a multi-stage mixing process of distribution-diversion-redistribution is achieved.

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