Modular multi-stage fluid material mixing device

Abstract

The embodiment belongs to the field of fluid mixing and reaction equipment, and discloses a modular multi-stage fluid material mixing device, which comprises a shell, a group of reactor cavities or multiple groups of series / parallel reactor cavities are arranged in the shell; the reactor cavity is of a square structure, a plurality of adjacent partition cavities are arranged in the reactor cavity, and two adjacent partition cavities are connected in communication through at least one orifice. The partition cavities connected directly by orifices of different positions and different sizes are arranged in the reactor cavity, so that the liquid directly turns back and turns by 90 degrees+90 degrees in the advancing channel, thereby generating multiple motion phenomena such as turbulent flow, vortex, double vortex flow, flow separation, reverse backflow and / or turn-back pressure fluctuation, irregular collision and mixing of the fluid are promoted, the liquid and the medicine liquid are fully mixed, the mixing efficiency and uniformity are effectively improved, and the sewage treatment efficiency and quality are improved.

Description

Technical Field

[0001] This utility model belongs to the field of fluid mixing and reaction equipment, and specifically relates to a modular multi-stage fluid material mixing device. Background Technology

[0002] Existing fluid mixing methods typically employ traditional single-stage pipeline mixers, which mainly use U-shaped bends in a circular pipe, usually with a fixed diameter. During operation, the fluid flowing within the pipe generates laminar mixing. Furthermore, in the bend area (at the U-turn), due to uneven velocity distribution, the pressure difference between the outer and inner sides of the bend intensifies, causing fluid swirling motion and generating pressure-type eddies.

[0003] The mixing in this type of single-stage pipe mixer mainly relies on laminar diffusion; therefore, to enhance mixing efficiency, it is typically necessary to:

[0004] a) Increasing the length of the pipes to enhance the mixing effect results in larger equipment size and increased processing costs.

[0005] b) Increasing the roughness of the pipe walls, such as by using corrugated pipes, can cause debris to accumulate and lead to pipe blockage.

[0006] c) Inlaying flow-restricting materials inside the pipe to enhance the coagulation effect can easily cause pipe blockage and consumes a lot of energy.

[0007] Moreover, regardless of which improvement is adopted, single-stage mixing remains ineffective and struggles to adapt to high-concentration or high-viscosity fluids. Therefore, to achieve satisfactory mixing, these pipeline mixers often need to be configured as multi-stage mixers. This is achieved by altering the flow rate from inlet to outlet, typically by progressively increasing the pipe diameter of each subsequent stage to reduce the flow rate. However, this reduced flow rate further worsens the mixing effect, necessitating the addition of longer pipes in later stages. This increased pipe length and diameter results in a larger footprint and higher costs. Utility Model Content

[0008] To address the aforementioned problems, this invention provides a modular multi-stage fluid material mixing device that can fully mix liquid and chemical solution, effectively improving wastewater treatment efficiency and quality.

[0009] Therefore, the technical solution of this utility model is: a modular multi-stage fluid material mixing device, including a shell, with an inlet, an outlet and several intermediate ports on the side of the shell; the shell is provided with a set of reactor chambers or multiple sets of reactor chambers connected in series / parallel, and the inlet, outlet and intermediate ports are all connected to the reactor chambers; the reactor chambers are square structures, and multiple adjacent compartments are provided inside, with two adjacent compartments connected through at least one orifice.

[0010] Based on the above scheme and as a preferred embodiment of the above scheme: the flow cross-sections of each compartment in the reactor cavity are the same or different, and each orifice has the same or different flow cross-sections.

[0011] Based on the above scheme and as a preferred embodiment of the above scheme: the orifice is provided with a sliding adjustment plate to adjust the size or shape of the flow cross section of the orifice, or the orifice is provided with baffles of different diameters and shapes.

[0012] Based on the above scheme and as a preferred embodiment of the above scheme: the shell is an open structure, and the reactor cavity and the shell are plug-in structures, which can be inserted into the shell from the open.

[0013] Based on the above scheme and as a preferred option: two adjacent cavities are connected at one end through an opening, or both ends are connected through openings, or the middle is connected through multiple openings.

[0014] Based on the above scheme and as a preferred embodiment of the above scheme: a horizontal or vertical baffle plate is provided in the reactor cavity to form adjacent baffles; the baffle plate is provided with an opening that connects the baffles on both sides, or the end of the baffle plate and the inner wall of the square cavity are spaced to form an opening.

[0015] Based on the above scheme and as a preferred embodiment of the above scheme: the top of the reactor cavity is open or sealed by a cover plate.

[0016] Based on the above scheme and as a preferred embodiment of the above scheme: multiple parallel square pipes are arranged in the reactor cavity, and through openings are provided between adjacent square pipes, with the openings connecting two adjacent square pipes.

[0017] This invention, in addition to conforming to the traditional principles of laminar and vortex flow, incorporates more principles of motion. Liquid flows into the cavity from the inlet, and during the flow process:

[0018] Some liquids directly turn back within the forward flow path: When the flowing liquid has momentum and the flow direction needs to change drastically by 180°, the inertia of the liquid will resist this change, and the fluid will try to maintain its original flow direction, thus generating phenomena such as turbulence, vortices, reverse flow and / or backflow pressure fluctuations.

[0019] Some liquid turns 90 degrees to flow into the orifice, then turns another 90 degrees to flow into the next compartment. Due to inertia, the fluid tends to maintain its original direction and velocity. During the first 90-degree turn into the narrow orifice, the fluid is forced to change direction and accelerate (because the orifice's cross-sectional area is usually smaller than the compartment, increasing velocity). The core of the liquid, due to inertia, impacts the wall opposite the notch and is "compressed" and accelerated within the notch. During the second 90-degree turn out of the notch and into the next compartment, the flow direction changes drastically again, and the cross-section expands again. These continuous sharp turns and changes in cross-section greatly disrupt the fluid's momentum, resulting in turbulence, vortices, double-vortex flow, flow separation, and / or low-pressure backflow.

[0020] These multi-mode motion can apply dynamic loads to fluid micro-clusters or droplets through stretching, shearing and other forces, increase the interphase contact area, improve mixing efficiency, break the stable stratification of laminar flow, promote irregular collisions and mixing of fluids in different regions, reduce the impact of drug pulses, and make the mixing more uniform.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] The reactor chamber is equipped with partitions connected by orifices of different positions and sizes, which allow the liquid to directly fold back and turn at 90 degrees + 90 degrees in the forward channel. This generates various dynamic phenomena such as turbulence, vortex, double vortex flow, flow separation, reverse backflow and / or backflow pressure fluctuations. This promotes irregular collision and mixing of fluids, achieves thorough mixing of the drug solution and liquid, effectively improves mixing efficiency and uniformity, and thus improves wastewater treatment efficiency and quality.

[0023] Depending on the usage requirements, one or more reactor chambers can be set up in series / parallel to achieve modular design. The top of the reactor chamber can be either open or sealed with a cover plate. At the same time, cavities and orifices can be formed in various ways, such as setting baffle plates or parallel square pipes, which can facilitate flexible construction and adjustment according to actual needs and have good modular scalability.

[0024] The reactor chamber and shell are designed with a plug-in structure, which can be easily inserted into the shell from the opening. This greatly facilitates the installation and disassembly of the reactor chamber. When the equipment needs to be repaired, cleaned or replaced, it can be done without complicated operations, which reduces the difficulty of maintenance, saves maintenance time and costs, and also facilitates the inspection and maintenance of the reactor interior, further improving the service life and operational stability of the equipment.

[0025] The orifice is equipped with a sliding adjustment plate or a baffle with different orifice diameters and shapes, which can adjust the size or shape of the orifice flow cross section, thereby flexibly controlling the fluid flow state and mixing effect; the flow cross sections of the cavities can be the same or different, and the connection methods between adjacent cavities are diverse, which can meet the mixing needs of fluids with different characteristics. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of Example 1;

[0027] Figure 2 This is a structural cross-sectional view of Example 1;

[0028] Figure 3 This is a schematic diagram of the structure of Example 2;

[0029] Figure 4 This is a structural cross-sectional view of Example 2;

[0030] Figure 5 This is a schematic diagram of the structure of Example 3;

[0031] Figure 6 This is a schematic diagram of the internal structure of Example 3;

[0032] Figure 7 This is a structural cross-sectional view of Example 3;

[0033] Figure 8 This is a schematic diagram of the internal structure of Example 4;

[0034] Figure 9 This is a schematic diagram of the principle of this utility model; wherein: ① laminar flow, ② recirculation, ③ turbulent flow, vortex, double vortex flow, secondary flow, etc., ④ bidirectional circulating flow.

[0035] The following are marked in the figure: square shell 1, inlet 11, outlet 12, intermediate opening 13, first reactor cavity 21, second reactor cavity 22, open structure 23, third reactor cavity 24, top cover 3, partition plate 4, partition 5, orifice 6, regulating plate 7, square pipe 8. Detailed Implementation

[0036] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. They should not be construed as limiting the specific protection scope of this utility model.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0038] Example 1

[0039] The modular fluid material mixing device described in this embodiment includes a square shell 1, within which a set of first reactor chambers 21 are provided. Alternatively, multiple first reactor chambers 21 can be provided according to usage requirements. The first reactor chambers 21 can be connected in series or in parallel. The square shell 1 has an open structure, and the first reactor chambers 21 are pluggable to the square shell 1, allowing them to be inserted into or removed from the square shell 1 for convenient daily installation, removal, and maintenance. The square shell 1 has an inlet 11, an outlet 12, and several intermediate ports 13 on its side. The inlet 11, outlet 12, and intermediate ports 13 are all connected to the first reactor chambers 21. The intermediate ports can be configured as dosing ports, detection ports, etc., according to usage requirements.

[0040] The first reactor cavity 21 is also a square structure, and the top is sealed by the top cover 3, which can establish a certain pressure in the first reactor cavity 21 and increase the liquid flow rate. Multiple horizontal baffle plates 4 are set inside the first reactor cavity 21 to form no less than 3 cavities 5. The spacing of the baffle plates 4 can be set to be different, so as to obtain cavities 5 with different flow cross-sectional sizes, which can change the flow rate (speed up or slow down). The baffle plates 4 are provided with orifices 6 connecting the two cavities, or the baffle plate 4 end and the inner wall of the first reactor cavity 21 are spaced to form orifices 6, and the orifices 6 are used to connect adjacent cavities.

[0041] The flow cross-sections of each orifice 6 can be the same or different. Additionally, a sliding adjustment plate 7 can be provided on the orifice 6. The adjustment plate can be implemented using conventional sliding structures such as grooves, elongated slots, or fasteners to adjust the size or shape of the flow cross-section of the orifice 6. Alternatively, the orifice 6 can be equipped with baffles of different diameters and shapes (not shown in the figure).

[0042] Two adjacent compartments 5 are connected at one end through an orifice 6, or at both ends through an orifice 6, or in the middle through multiple orifices. When both ends of two adjacent compartments 5 are connected through an orifice 6, the liquid in the two compartments 5 is in a bidirectional circulating flow state, forming a flow reduction zone. The flow velocity in this flow reduction zone is reduced, which can create the effect of reaction tanks of different sizes.

[0043] In use, this embodiment has three states:

[0044] 1) Primary mixing: The fluid is initially mixed with the agent in a laminar flow state in the straight pipe section (the agent inlet is on the side wall of the pipe), or initially mixed with the agent in a laminar flow state at the end (the agent inlet is at the end of the pipe).

[0045] 2) Secondary enhancement: When fluid flows through a 90°+90° orifice, changes in cross-section, or changes in flow direction, the sudden decrease or change in cross-sectional area, as well as the sudden change in flow direction, will cause local velocity doubling, liquid backflow, liquid rotation, etc., inducing "multi-state motion" such as vortices and turbulence.

[0046] 3) Tertiary reaction: When the spin fluid enters the next stage cavity, the cross-sectional area is restored or enlarged, or the volume is increased, generating a reverse shear force, which prolongs the reaction contact time.

[0047] This embodiment utilizes orifices of different sizes and shapes to connect cavities of different dimensions, resulting in various dynamic motion modes of different scales, including laminar flow, eddies, double vortex flow, countercurrent flow, backflow pressure fluctuations, vortices, turbulence, flow separation, and recirculation. These dynamic motion modes, through physical disruption, energy transfer, and multi-scale coupling, significantly improve the mixing rate and uniformity of the fluids. Actual verification shows that the coagulant's flow path length is reduced by more than 50%, energy consumption is reduced by more than 50%, it occupies less space (approximately 60% less), and manufacturing costs are significantly reduced (approximately 40% less).

[0048] Example 2

[0049] The structure of this embodiment is the same as that of Embodiment 1, except that: the shell of this embodiment is provided with a second reactor chamber 22, and the top of the second reactor chamber 22 is an open structure 23. When open, the flow rate inside the second reactor chamber 22 is slow, and no pressure needs to be built up in the partition 5. Compared with the cover plate seal of Embodiment 1, it can be used in different application scenarios. In addition, a handle can be provided at the open end for easy pulling of the reactor chamber, which is convenient for users.

[0050] Example 3

[0051] The working principle of this embodiment is the same as that of embodiment 1, except that: the shell of this embodiment is a square shell, and multiple parallel square pipes 8 are provided inside the square shell. Holes are opened at the relative positions of adjacent square pipes 8 to form interconnected openings 6, so that adjacent square pipes 8 can be connected; at the same time, the square pipes 8 are welded and fixed together to form a third reactor cavity 24, and the inside of the pipes becomes a reaction compartment.

[0052] Example 4

[0053] This embodiment has the same structure as Embodiment 3, except that: in this embodiment, two sets of parallel third reactor chambers 24 are provided inside the shell, and adjacent third reactor chambers 24 can be connected by pipelines. Furthermore, the third reactor chambers 24 have a flat structure, and the volume and footprint are relatively small even after multiple sets are connected in series.

[0054] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A modular multi-stage fluid material mixing device, comprising a shell, with an inlet, an outlet, and several intermediate ports on the side of the shell; characterized in that: The shell contains one or more reactor chambers connected in series or parallel, with the inlet, outlet and intermediate port all connected to the reactor chambers; the reactor chambers are square in structure and contain multiple adjacent compartments, with adjacent compartments connected by at least one opening.

2. The modular multi-stage fluid material mixing device as described in claim 1, characterized in that: The flow cross sections of each compartment within the reactor cavity may be the same or different, and each orifice may have the same or different flow cross sections.

3. The modular multi-stage fluid material mixing device as described in claim 1, characterized in that: The orifice is provided with a sliding adjustment plate to adjust the size or shape of the flow cross section of the orifice, or the orifice is provided with baffles of different diameters and shapes.

4. The modular multi-stage fluid material mixing device as described in claim 1, characterized in that: The shell is an open structure, and the reactor cavity and the shell are plug-in type, which can be inserted into the shell from the open.

5. The modular multi-stage fluid material mixing device as described in claim 1, characterized in that: Two adjacent compartments may be connected at one end through an opening, or at both ends through an opening, or in the middle through multiple openings.

6. A modular multi-stage fluid material mixing device as described in any one of claims 1 to 5, characterized in that: The reactor cavity is provided with horizontal or vertical partition plates to form adjacent partitions; the partition plates are provided with orifices connecting the two partitions, or the end of the partition plate and the inner wall of the square cavity are spaced to form orifices.

7. A modular multi-stage fluid material mixing device as described in claim 6, characterized in that: The top of the reactor chamber is either open or sealed by a cover plate.

8. A modular multi-stage fluid material mixing device as described in any one of claims 1 to 5, characterized in that: The reactor chamber is equipped with multiple parallel square pipes, and there are through openings between adjacent square pipes, which connect the two adjacent square pipes.

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