Static mixer and fluid static mixing device
By designing a combination of helical blades and orifice structure in a static mixer, the problems of easy fluid clogging and uneven mixing are solved, achieving efficient fluid mixing under low pressure drop, which is applicable to petroleum, chemical and other fields.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANDA NAXON SENSING TECHNOLOGY (TIANJIN) CO LTD
- Filing Date
- 2025-05-13
- Publication Date
- 2026-04-17
AI Technical Summary
Existing static mixers tend to stick to the mixing unit when handling fluids containing substances that easily clog the flow channels, such as paraffin, silt, and asphalt, leading to pipe blockage. They also suffer from significant mixing uniformity and pressure loss, posing safety hazards, especially under low-temperature conditions.
Design a static mixer with multiple helical blades, each with a hole. Adjacent blades rotate in different directions and are connected by a connecting end to form rotational and local disturbances. The opening structure is introduced to enhance the uniformity of fluid mixing and to induce vortices and reverse flow through the holes, thereby reducing the pressure drop between blades.
It improves fluid mixing uniformity and flow stability, reduces pressure drop, and enhances mixing effect without significantly increasing fluid flow resistance, making it suitable for low-pressure-drop scenarios.
Smart Images
Figure CN224127015U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of fluid mixing technology, and more specifically, to static mixers and fluid static mixing devices. Background Technology
[0002] A static mixer is a highly efficient mixing device without moving parts. It uses mixing units fixed inside a pipe to change the flow state of the fluid, allowing the various media within the pipe to mix or disperse. Due to its advantages such as high efficiency, low energy consumption, small size, and continuous operation, it is widely used in petroleum, chemical, and biological fields.
[0003] In 1996, my country's Ministry of Machinery Industry issued the industry standard JB / T 7660—1995, "Static Mixers." Based on various domestic and international static mixers, this standard summarized five standard static mixer types (SV, SK, SX, SL, and SH) according to different mixing unit structures. Among them, the SV and SH types are suitable for clean fluids without impurities. However, for fluids containing substances that easily clog the flow channels, such as paraffin, silt, and asphalt, especially at lower temperatures, these fluids tend to adhere to the mixing unit, causing pipe blockage, affecting subsequent production processes, and even leading to safety accidents. For the SX and SL types of static mixers, the turbulent pressure drop and laminar pressure drop are greater than those of the SK type, resulting in higher pressure loss when the same quality fluid passes through the mixing unit. While the SK type static mixer is less prone to clogging and has lower pressure loss when the fluid passes through the mixing unit, its mixing performance in terms of uniformity still needs improvement. Utility Model Content
[0004] In view of this, the purpose of this application is to provide a static mixer and a fluid static mixing device to solve the above-mentioned technical problems.
[0005] In a first aspect, embodiments of this application provide a static mixer, the static mixer comprising: a plurality of helical blades;
[0006] The helical blade includes a first connecting end, a second connecting end, and a rotating part;
[0007] The rotating part is disposed between the first connecting end and the second connecting end;
[0008] Wherein, two adjacent spiral blades are connected to each other through the first connecting end or the second connecting end;
[0009] The rotating parts of two adjacent spiral blades have different spiral directions, and each spiral blade has at least one hole.
[0010] In the above implementation process, the static mixer includes: multiple helical blades; each helical blade includes a first connecting end, a second connecting end, and a rotating part; the rotating part is disposed between the first connecting end and the second connecting end; wherein adjacent helical blades are connected to each other through the first connecting end or the second connecting end; wherein the helical directions of the rotating parts in adjacent helical blades are different, and each helical blade has at least one hole. By limiting the helical directions of the rotating parts in adjacent helical blades to be different, rotational disturbances are formed in the fluid, which can improve the mixing uniformity of the fluid. By opening at least one hole in each helical blade, an open structure is introduced, which can enhance the local disturbance effect without significantly increasing the flow resistance of the fluid. Based on the opening, local penetrating flow can be introduced, which enhances the disturbance intensity and promotes droplet breakup. In addition, based on the opening, the pressure drop caused by the inter-blade obstruction between different helical blades can also be reduced. The opening can also induce vortices and counterflow, improve mixing uniformity, and help improve the mixing effect under low pressure drop.
[0011] Optionally, in this embodiment, the opening direction of the hole is perpendicular to the blade surface of the helical blade; the number of holes is even, and the holes are symmetrically distributed on both sides of the helical shaft of the helical blade; wherein, the extension direction of the helical shaft is consistent with the arrangement direction of the plurality of helical blades.
[0012] In the above implementation process, by symmetrically distributing the holes on both sides of the spiral shaft of the spiral blades, the mixing uniformity of the fluid flowing through the static mixer can be further improved, resulting in a better mixing effect.
[0013] Optionally, in this embodiment of the application, the blade surface of the helical blade is curved and has different curvatures along the extension direction of the helical axis.
[0014] In the above implementation process, the blade surfaces of the helical blades have different curvatures along the extension direction of the helical axis, so as to ensure the uniformity of mixing while minimizing the flow resistance caused by the static mixer.
[0015] Optionally, in this embodiment of the application, the deflection angles of the connecting ends of the two connecting ends of two adjacent spiral blades are different; wherein, the connecting end includes: one end of one of the two adjacent spiral blades that is connected to the other spiral blade.
[0016] In the above implementation process, by limiting the deflection angle of the two connecting ends of two adjacent helical blades to be different, that is, by staggering the two adjacent helical blades, strong shearing and rotational disturbances can be formed in the fluid, which can cause different components in the fluid to stretch, intertwine and recombine with each other, so as to effectively break up the interface structure and improve the flow stability and mixing uniformity of the fluid.
[0017] Optionally, in this embodiment of the application, the end deflection angle difference between the two connecting ends of two adjacent spiral blades includes 60° to 120°; wherein, the end deflection angle difference includes: the difference in the connecting end deflection angles of the two connecting ends.
[0018] In the above implementation process, by limiting the end deflection angle difference γ between the two connecting ends of two adjacent helical blades to 60° to 120°, the interface structure between the two adjacent helical blades 100 can be more effectively broken up, further improving the flow stability and mixing uniformity of the fluid, so as to obtain a better fluid mixing effect.
[0019] Optionally, in embodiments of this application, the aspect ratio of the helical blade includes 0.5 to 2.
[0020] In the above implementation process, by limiting the length-to-diameter ratio of the helical blades to 0.5 to 2, the mixing effect of the helical blades can be ensured while minimizing the fluid flow resistance caused by the helical blades, so as to adapt to fluid mixing scenarios with low pressure drop.
[0021] Optionally, in this embodiment of the application, the torsion angle of the rotating portion of the helical blade includes 90° to 270°.
[0022] Secondly, embodiments of this application also provide a fluid static mixing device, the fluid static mixing device comprising: a fluid transport pipeline and a static mixer as described in any of the first aspects disposed within the fluid transport pipeline.
[0023] In the above-described implementation process, the static fluid mixing device includes: a fluid transport pipeline and a static mixer as described in any of the first aspects, disposed within the fluid transport pipeline. Because the rotating portions of adjacent helical blades in the static mixer have different helical directions, rotational disturbances can be generated in the fluid, improving the mixing uniformity of the fluid. Furthermore, each helical blade in the static mixer has at least one hole. By introducing this opening structure, the local disturbance effect can be enhanced without significantly increasing the fluid flow resistance. The opening allows for the introduction of localized penetrating flow, enhancing the disturbance intensity and promoting droplet breakup. In addition, the opening can reduce the pressure drop caused by inter-blade obstruction between different helical blades. The opening can also induce vortices and counter-current flow, improving mixing uniformity and contributing to improved mixing performance under low pressure drop. Therefore, this static fluid mixing device can improve the mixing uniformity of the fluid and also contributes to achieving better fluid mixing performance under low pressure drop.
[0024] Optionally, in this embodiment of the application, the static mixer is vertically installed inside the fluid transport pipeline, and the multiple helical blades in the static mixer have a height difference.
[0025] In the above implementation process, by vertically installing the static mixer inside the fluid transport pipeline, and by having multiple spiral blades in the static mixer with height differences, vortices and reverse flow can be further induced to improve mixing uniformity and enhance the mixing effect in low pressure drop scenarios.
[0026] Optionally, in this embodiment, the static mixer is tangential to the inner wall of the fluid transport pipeline.
[0027] The beneficial effects of this application are as follows: The static mixer includes multiple helical blades; each helical blade includes a first connecting end, a second connecting end, and a rotating part; the rotating part is disposed between the first connecting end and the second connecting end; adjacent helical blades are connected to each other through the first connecting end or the second connecting end; the rotating parts of adjacent helical blades have different helical directions, and each helical blade has at least one hole. By limiting the different helical directions of the rotating parts of adjacent helical blades, rotational disturbances are formed in the fluid, which can improve the mixing uniformity of the fluid. By opening at least one hole on each helical blade, an open structure is introduced, which can enhance the local disturbance effect without significantly increasing the flow resistance of the fluid. Based on the opening, local through-flow can be introduced, which enhances the disturbance intensity and promotes droplet breakup. In addition, based on the opening, the pressure drop caused by the inter-blade obstruction between different helical blades can also be reduced. The opening can also induce vortices and counterflow, improve mixing uniformity, and help improve the mixing effect under low pressure drop. Attached Figure Description
[0028] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application 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.
[0029] Figure 1 This is a schematic diagram of the structure of a static mixer provided in an embodiment of this application;
[0030] Figure 2 This is a schematic diagram of the structure of a blade provided in an embodiment of this application;
[0031] Figure 3 This is a schematic diagram of another static mixer provided in an embodiment of this application;
[0032] Figure 4 This is a schematic diagram of the structure of a spiral blade provided in an embodiment of this application.
[0033] Figure label:
[0034] 10-Static mixer; 100-Helical blade; 101-First connecting end; 102-Second connecting end; 103-Rotating part; 104-Hole. Detailed Implementation
[0035] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.
[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application.
[0037] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.
[0038] Please refer to Figure 1 , Figure 1 This application provides a schematic diagram of the structure of a static mixer 10 according to an embodiment. The static mixer 10 includes: a plurality of helical blades 100;
[0039] The helical blade 100 includes a first connecting end 101, a second connecting end 102, and a rotating part 103;
[0040] The rotating part 103 is disposed between the first connecting end 101 and the second connecting end 102;
[0041] Adjacent spiral blades 100 are connected to each other via a first connecting end 101 or a second connecting end 102;
[0042] The rotating parts 103 in two adjacent helical blades 100 have different helical directions, and each helical blade 100 has at least one hole 104.
[0043] Multiple helical blades 100 can be interconnected by welding to ensure the connection strength between them. Specifically, the first connecting end 101 or the second connecting end 102 of one of two adjacent helical blades 100 can be welded to the first connecting end 101 or the second connecting end 102 of the other helical blade 100 to achieve interconnection between adjacent helical blades 100. The number of helical blades 100 included in the static mixer 10 can be 2, 6, 10, or other reasonable values. The number of helical blades 100 included in the static mixer 10 can be adjusted according to the actual application scenario (e.g., the type of mixture and the length of the mixing pipe). Figure 1 This is merely an example showing six interconnected helical blades 100. The helical directions of the rotating portions 103 in adjacent helical blades 100 are different: as shown... Figure 1 As shown, the helical direction of the rotating portion 103 of each helical blade 100 is different from the helical direction of the rotating portion 103 of the adjacent helical blades 100. By defining the different helical directions of the rotating portions in two adjacent helical blades, rotational disturbances are formed in the fluid, which can improve the mixing uniformity of the fluid.
[0044] The helical blade 100 can be obtained through a torsion operation. Please refer to [reference needed]. Figure 2 , Figure 2 This is a schematic diagram of the structure of a blade provided in an embodiment of this application. Figure 2 The diagram shown is a schematic of the blade structure before the torsion operation. Figure 2 The blade shown is twisted to obtain a helical blade 100. Before the twisting operation, multiple holes can be evenly opened at both ends of the blade's twisting axis. The number of holes 104 can be one, two, four, or other reasonable values. Figure 1An exemplary example is shown where there are two orifices 104, and the orifices 104 are circular in shape. By introducing the orifice structure, the local disturbance effect can be enhanced without significantly increasing the flow resistance of the fluid. Based on the orifices 104, local penetrating flow can be introduced, enhancing the disturbance intensity and promoting droplet breakup; it can also reduce the pressure drop caused by inter-blade obstruction between different helical blades 100. In addition, the orifices 104 can also induce vortices and countercurrent flow, improve mixing uniformity, and help improve the mixing effect under low pressure drop.
[0045] The thickness of the helical blade 100 can be 3 mm, 5 mm, 7 mm, or other suitable values. When the hole 104 is circular, its diameter can be 5 mm, 10 mm, 15 mm, or other suitable values. Correspondingly, the length of the blade used to produce the helical blade 100 by twisting can be 60 mm, 75 mm, 90 mm, or other suitable values; the width of the blade can be 30 mm, 50 mm, 70 mm, or other suitable values. This application does not impose specific limitations on any of these aspects.
[0046] Therefore, the static mixer 10 provided in this application embodiment includes multiple helical blades 100. By defining different helical directions of the rotating portions 103 in adjacent helical blades 100, strong shearing and rotational disturbances are formed in the fluid. This can cause different components in the fluid to stretch, interweave, and recombine with each other, effectively breaking down the interface structure and improving the flow stability and mixing uniformity of the fluid. By opening at least one hole 104 on each helical blade 100, an open structure is introduced, which can enhance the local disturbance effect without significantly increasing the flow resistance of the fluid. Based on the hole 104, local penetrating flow can be introduced, enhancing the disturbance intensity and promoting droplet breakage. In addition, based on the hole 104, the pressure drop caused by inter-blade obstruction between different helical blades can be reduced. The hole 104 can also induce vortices and countercurrent flow, improving mixing uniformity and helping to improve the mixing effect under low pressure drop.
[0047] It should be noted that the static mixer 10 provided in this application can be used for mixing oil produced fluids. After the oil produced fluids are fully mixed by the static mixer 10, parameters such as water content in the oil produced fluids can be measured by corresponding measuring devices, which can improve the accuracy of parameter measurement and provide a basis for the subsequent processing of oil produced fluids.
[0048] In some optional embodiments, the opening direction of the hole 104 is perpendicular to the blade surface of the helical blade 100; the number of holes 104 is even, and the holes 104 are symmetrically distributed on both sides of the helical shaft of the helical blade 100; wherein, the extension direction of the helical shaft is consistent with the arrangement direction of the plurality of helical blades 100.
[0049] Specifically, the helical axis refers to the axis where the midpoint of the first end and the midpoint of the second end of the helical blade 100 are located; the midpoint of the first end refers to the midpoint of the first connecting end 101 of the helical blade 100, and the midpoint of the second end refers to the midpoint of the second connecting end 102 of the helical blade 100. Figure 1 An exemplary illustration shows the case where the opening direction of the holes 104 is perpendicular to the blade surface of the helical blade 100, and the holes 104 are symmetrically distributed on both sides of the helical shaft of the helical blade 100. Taking the number of holes 104 as 2N (N is a positive integer) as an example, N holes 104 can be distributed on one side of the helical shaft, and the other N holes 104 can be distributed on the other side of the helical shaft, symmetrically distributed. By symmetrically distributing the holes 104 on both sides of the helical shaft of the helical blade 100, the mixing uniformity of the fluid flowing through the static mixer 10 can be further improved, resulting in a better mixing effect.
[0050] In some alternative embodiments, the blade surface of the helical blade 100 is curved and has different curvatures along the extension direction of the helical axis.
[0051] The curvature of the helical blade 100 along the extension direction of the helical axis can be continuous and gradual. The blade surface of the helical blade 100 has different curvatures along the extension direction of the helical axis to minimize the flow resistance caused by the static mixer 10 while ensuring mixing uniformity.
[0052] In some optional embodiments, the deflection angles of the connecting ends of two adjacent spiral blades 100 are different; wherein, the connecting end includes: one end of two adjacent spiral blades 100 in which one spiral blade is connected to the other spiral blade.
[0053] Among them, with Figure 1 Taking the two leftmost adjacent helical blades 100 of the static mixer 10 shown as an example, the connection ends include the right end of the first left helical blade 100 and the left end of the second left helical blade 100. Taking the deflection angle of the connection end corresponding to the right end of the first left helical blade 100 as 0° (i.e., 0° in the vertical direction) as an example, the deflection angle of the connection end corresponding to the left end of the second left helical blade 100 is 90°. It should be noted that the deflection angle of the connection end corresponding to the left end of the second left helical blade 100 can also be 30°, 60°, 120°, or other reasonable values; this application does not specifically limit this. Figure 1This is just one example. By limiting the deflection angle of the connecting ends of two adjacent helical blades 100 to be different, that is, by staggering the two adjacent helical blades 100, strong shear and rotational disturbances can be formed in the fluid. This can cause different components in the fluid to stretch, interweave and recombine with each other, so as to effectively break up the interface structure and improve the flow stability and mixing uniformity of the fluid.
[0054] Please refer to Figure 3 , Figure 3 This is a schematic diagram of another static mixer 10 provided in an embodiment of this application. Figure 3 Two adjacent helical blades 100 in a static mixer 10 are shown, and the end deflection angle difference γ between the two connecting ends of the two adjacent helical blades 100 is shown.
[0055] In some optional embodiments, the end deflection angle difference γ between the two connecting ends of two adjacent helical blades 100 includes 60° to 120°; wherein, the end deflection angle difference γ includes: the difference in the connecting end deflection angle of the two connecting ends.
[0056] The end deflection angle difference γ can be 60°, 90° or 120°, etc., and this application does not make a specific limitation on it. Figure 1 An illustrative example is shown where the end deflection angle difference γ between the two connecting ends of two adjacent helical blades 100 is 90°. By limiting the end deflection angle difference γ between the two connecting ends of two adjacent helical blades 100 to 60° to 120°, the interface structure between the two adjacent helical blades 100 can be more effectively broken down, further improving the flow stability and mixing uniformity of the fluid, thereby achieving a better fluid mixing effect.
[0057] Please refer to Figure 4 , Figure 4 This is a schematic diagram of the structure of a helical blade 100 provided in an embodiment of this application. In some optional embodiments, the aspect ratio of the helical blade 100 includes 0.5 to 2.
[0058] Among them, such as Figure 4 As shown, the aspect ratio of the helical blade 100 refers to the ratio between the length L of the helical blade 100 and the blade rotation diameter D. The aspect ratio of the helical blade 100 can be 0.5, or it can be 1, 1.5, 2, or other reasonable values. By limiting the aspect ratio of the helical blade 100 to 0.5 to 2, the mixing effect of the helical blade 100 can be ensured while minimizing the fluid flow resistance introduced by the helical blade 100, thus adapting to fluid mixing scenarios with low pressure drop.
[0059] In some alternative embodiments, the torsion angle α of the rotating portion 103 of the helical blade 100 includes 90° to 270°.
[0060] Among them, such as Figure 4 As shown, the torsion angle α refers to the rotation angle of the rotating part 103 of the helical blade 100, or it can be the angle between the first connecting end 101 and the second connecting end 102 of the helical blade 100. The torsion angle α of the rotating part 103 of the helical blade 100 can be 90°, or it can be 120°, 180°, 270° or other reasonable values, and this application does not make a specific limitation in this regard. Figure 1 and Figure 4 The cases shown are exemplary, with a twist angle α of 180°.
[0061] This application also provides a fluid static mixing device, which includes: a fluid transport pipeline and a static mixer 10 as described in any of the first aspects disposed within the fluid transport pipeline.
[0062] It should be noted that the static mixer 10 can be installed horizontally or vertically inside the fluid transport pipeline. The installation method of the static mixer 10 inside the fluid transport pipeline can be adjusted according to actual application requirements.
[0063] As described above, the static fluid mixing device includes a fluid transport pipe and a static mixer 10, as described in any of the first aspects, disposed within the fluid transport pipe. Because the rotating portions 103 of adjacent spiral blades 100 in the static mixer 10 have different helical directions, rotational disturbances can be generated in the fluid, improving the mixing uniformity. Furthermore, each spiral blade 100 in the static mixer 10 has at least one hole 104. By introducing this opening structure, the local disturbance effect can be enhanced without significantly increasing the fluid flow resistance. The opening allows for the introduction of local through-flow, enhancing the disturbance intensity and promoting droplet breakup. In addition, the opening reduces the pressure drop caused by inter-blade obstruction between different spiral blades 100. The opening 104 can also induce vortices and counter-flow, improving mixing uniformity and contributing to improved mixing performance under low pressure drop. Therefore, this static fluid mixing device can improve the mixing uniformity of the fluid and also helps to achieve better fluid mixing performance under low pressure drop.
[0064] In some alternative embodiments, the static mixer 10 is vertically mounted inside the fluid transport pipe, and the plurality of helical blades 100 in the static mixer 10 have a height difference.
[0065] The fluid can flow from bottom to top through the static mixer 10. By vertically installing the static mixer inside the fluid transport pipeline, and by having multiple spiral blades in the static mixer with height differences, vortices and countercurrent flows can be further generated, improving mixing uniformity and enhancing the mixing effect in low-pressure-drop scenarios.
[0066] In some alternative embodiments, the static mixer 10 is disposed tangentially to the inner wall of the fluid transport conduit.
[0067] In this method, the static mixer 10 can be first installed in the fluid mixing pipe in the fluid transport pipeline, and then the fluid mixing pipe can be connected to the remaining pipes through flange or threaded connections.
[0068] It should be understood that this fluid static mixing device corresponds to the static mixer 10 embodiment described above. The specific functions and implementation of this fluid static mixing device can be found in the description above. To avoid repetition, detailed descriptions are omitted here.
[0069] It should be understood that the disclosed apparatus / systems can also be implemented in other ways, given the several embodiments provided in this application. The apparatus embodiments described above are merely illustrative; for example, the flowcharts and block diagrams in the accompanying drawings illustrate the possible architecture, functions, and operations of apparatuses according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module or part of a module. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified functions or actions, or using a combination of dedicated hardware and computer instructions.
[0070] In addition, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.
[0071] The above description is only an optional implementation of the embodiments of this application, but the protection scope of the embodiments of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the embodiments of this application should be covered within the protection scope of the embodiments of this application.
Claims
1. A static mixer characterized by, The static mixer includes: multiple spiral blades; The helical blade includes a first connecting end, a second connecting end, and a rotating part; The rotating part is disposed between the first connecting end and the second connecting end; Wherein, two adjacent spiral blades are connected to each other through the first connecting end or the second connecting end; The rotating parts of two adjacent spiral blades have different spiral directions, and each spiral blade has at least one hole.
2. The static mixer of claim 1, wherein, The opening direction of the hole is perpendicular to the blade surface of the helical blade; The number of holes is even, and the holes are symmetrically distributed on both sides of the helical shaft of the helical blade; The extension direction of the helical shaft is consistent with the arrangement direction of the plurality of helical blades.
3. The static mixer of claim 2, wherein, The surface of the helical blade is curved and has different curvatures along the extension direction of the helical axis.
4. The static mixer of claim 1, wherein, The deflection angles of the connecting ends of two adjacent spiral blades are different. The connecting end includes: one end of two adjacent spiral blades, in which one spiral blade is connected to the other spiral blade.
5. The static mixer of claim 4, wherein, The end deflection angle difference between the two connecting ends of two adjacent spiral blades includes 60° to 120°; The end deflection angle difference includes the difference in the deflection angles of the connecting ends of the two connecting ends.
6. The static mixer of any one of claims 1-5, wherein, The aspect ratio of the helical blades ranges from 0.5 to 2.
7. The static mixer of any one of claims 1-5, wherein, The torsion angle of the rotating part of the helical blade ranges from 90° to 270°.
8. A fluid static mixing device, characterized by, The fluid static mixing device includes: a fluid transport pipeline and a static mixer as described in any one of claims 1-7 disposed within the fluid transport pipeline.
9. The fluidic static mixing device of claim 8, wherein, The static mixer is installed vertically inside the fluid transport pipeline, and the multiple helical blades in the static mixer have a height difference.
10. The fluidic static mixing device of claim 9, wherein, The static mixer is tangential to the inner wall of the fluid transport pipeline.