Multi-point filling spinning vortex pipeline mixer

Through the design of the multi-point filling spin vortex pipeline mixer, the combination of spray grille and spoiler grille is used to solve the problem of low mixing efficiency of medicines in water treatment, and the efficient flocculation effect of low energy consumption and low drug consumption is achieved, and the water treatment needs are adapted to the fluctuation of flow.

CN223118226UActive Publication Date: 2025-07-18ZHEJIANG XINGHE INTELLIGENT DEV TECH CO LTD +1
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202422263157.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-14
Publication Date
2025-07-18
Estimated Expiration
2034-09-14

AI Technical Summary

Technical Problem

The existing water treatment technology is difficult to achieve rapid mixing of agents under low head loss conditions, and cannot adapt to working conditions with large flow fluctuations, resulting in high energy and drug consumption.

Method used

Using a multi-point filling spin vortex pipeline mixer, through the combination design of spray grille and spoiler grille, the agent enters the pipe from multiple points and forms a vortex with the water flow. The spin guide vane and spoiler vanes are used to enhance the mixing effect, and the rapid mixing of the agent and water is achieved.

Benefits of technology

Under low head loss conditions, rapid mixing of agents can be achieved, energy consumption and drug consumption can be reduced, water quality can be improved, and working conditions with large flow fluctuations.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223118226U_ABST
    Figure CN223118226U_ABST
Patent Text Reader

Abstract

The utility model discloses a multi-point filling spinning vortex pipeline mixer which comprises a pipeline body, a dosing inlet pipeline, a spraying grid and a turbulent flow grid, the pesticide spraying grid and the turbulent flow grid are both installed in the pipeline body, and the turbulent flow grid is located on the downstream of the pesticide spraying grid; the pesticide spraying grid comprises a middle distribution pipeline and a self-rotating guide vane assembly; a first medicine inlet and more than two first medicine outlets are formed in the middle distribution pipeline, the number of the self-spinning guide vane assemblies is equal to that of the first medicine outlets, the self-spinning guide vane assemblies and the first medicine outlets are in one-to-one correspondence, and the self-spinning guide vane assemblies are connected to the corresponding first medicine outlets; one end of the dosing inlet pipeline is located outside the pipeline body as a dosing port, and the other end extends into the pipeline body to be communicated with the first dosing port; the turbulent flow grid comprises a middle supporting pipeline and a turbulent flow guide vane assembly, and the turbulent flow guide vane assembly is connected to the middle supporting pipeline. According to the mixer, vortex mixing of water flow and chemicals is realized, the flocculation effect is improved, the chemical consumption and the energy consumption are reduced, and the water quality is improved; no moving equipment is needed, and adaptability is good.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to a multi-point injection self-vortex flow pipeline mixer, belonging to the technical field of physical and chemical treatment of water. Background Art

[0002] Coagulation is the most important physical and chemical process in the field of water treatment. After the coagulant is added, under certain hydraulic conditions, the mixing, hydrolysis, and polycondensation reactions are completed, promoting the destabilization and aggregation of colloidal pollutants in the raw water to form larger flocs, and removing them through subsequent air flotation or sedimentation to achieve water quality purification.

[0003] The dosing and mixing process of the coagulant requires the rapid diffusion of the reagent to form good hydrolysis reaction conditions, which is the key step for successful coagulation.

[0004] At present, the main mixing methods include pipeline mixing, mechanical stirring mixing, and water pump mixing, etc. Mechanical stirring and water pump mixing require additional mechanical moving equipment and reaction areas, and consume more energy. In a traditional static pipeline mixer, a mixing unit composed of several blades is arranged inside. After adding the medicine, the liquid is divided, exchanged, and vortexed through the division of the mixing unit to achieve the mixing effect. This process has lower requirements for land occupation and site conditions. However, in order to meet the mixing effect, the local head loss of the mixer should generally not be less than 0.3 - 0.4m, and it is not applicable to occasions with large flow fluctuations or insufficient head margin.

[0005] This application is a pipeline mixing technology for the field of water treatment, which does not require additional civil engineering facilities and moving equipment, can meet the requirements of rapid reagent mixing under low head loss conditions, and can adapt to different working conditions with a large flow fluctuation range. Content of the Utility Model

[0006] The utility model provides a multi-point injection self-vortex flow pipeline mixer, which disperses the liquid medicine once through the multi-point injection technology, combines the self-vortex flow technology to accelerate the mixing of the liquid medicine and the raw water, improves the flocculation effect, further reduces the medicine consumption and energy consumption, and improves the water quality.

[0007] In order to solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0008] A multi-point injection self-vortex flow pipeline mixer includes a pipeline body, a medicine adding inlet pipeline, and a medicine spraying grid; the medicine spraying grid is installed inside the pipeline body; the medicine spraying grid includes a middle distribution pipeline and a self-rotating guide vane assembly; a first medicine inlet and more than two first medicine outlets are arranged on the middle distribution pipeline, the number of the self-rotating guide vane assemblies is equal to the number of the first medicine outlets and corresponds to them one by one, and the self-rotating guide vane assemblies are connected to the corresponding first medicine outlets; one end of the medicine adding inlet pipeline is located outside the pipeline body as the medicine adding port, and the other end extends into the pipeline body and is communicated with the first medicine inlet.

[0009] To further enhance the mixing effect, the above-mentioned multi-point dosing self-vortex flow pipeline mixer further includes a spoiler grid, which is installed inside the pipeline body and downstream of the medicine spraying grid; the spoiler grid includes a middle support pipeline and a spoiler guide vane assembly, and the spoiler guide vane assembly is connected to the middle support pipeline.

[0010] The medicine spraying grid and the spoiler grid are preferably connected inside the pipeline body by an assembled and detachable device.

[0011] During use, the medicine is added from the medicine adding port of the medicine adding inlet pipeline, flows through the middle distribution pipeline to each self-rotating guide vane assembly and sprays out, generating a vortex to mix with the original water flow inside the pipeline body, and then forms a vortex again through the spoiler guide vane assembly of the spoiler grid to enhance the mixing effect. Without additional dynamic equipment, it can meet the requirements of rapid medicine mixing under the condition of low head loss, and can adapt to different working conditions with a large flow fluctuation range.

[0012] The direction from the upstream to the downstream of this application is the same as the direction of the original water flow.

[0013] To meet the water treatment requirements in different situations, the number of medicine spraying grids is 1 - 3, all installed inside the pipeline body; one end of the medicine adding inlet pipeline is outside the pipeline body, and the other end branches into 1 - 3 medicine spraying branches. The number of medicine spraying branches is equal to the number of medicine spraying grids and corresponds one by one. The medicine spraying branches extend into the pipeline body and are connected to the first medicine inlet on the corresponding medicine spraying grid; or, the number of medicine adding inlet pipelines is equal to the number of medicine spraying grids and corresponds one by one. One end of the medicine adding inlet pipeline is outside the pipeline body, and the other end extends into the pipeline body and is connected to the first medicine inlet on the corresponding medicine spraying grid.

[0014] To achieve sufficient mixing of the medicine and water, each medicine spraying grid is provided with 2 - 12 groups of self-rotating guide vane assemblies; further preferably, the number of self-rotating guide vane assemblies on each medicine spraying grid is an even number, and the self-rotating guide vane assemblies are evenly distributed around the corresponding middle distribution pipeline and are symmetric in pairs.

[0015] To improve the mixing effect, as one specific implementation solution, the middle distribution pipeline includes a first central pipe and a first distribution pipe. One end of the first central pipe is an open structure as the first medicine inlet, and the other end is a sealed end structure. The number of the first distribution pipes is more than two. One end of the first distribution pipe is connected to the side wall of the first central pipe, and the other end (this end is preferably a sealed end structure) is connected to the inner wall of the pipeline body, preferably a detachable connection here. For example, a connecting flange is provided at the end of the other end of the first distribution pipe, and the connecting flange is connected to the inner wall of the pipeline body by bolts; through holes are provided on the side wall of the first distribution pipe as the first medicine outlet.

[0016] As one specific implementation solution, the self-rotating guide vane assembly includes a self-rotating guide vane and a medicine spraying branch pipe.

[0017] The chemical spraying branch pipe includes a second central pipe and second distribution pipes. One end of the second central pipe is communicated with the corresponding first chemical outlet, and the other end is a sealed end structure. The number of the second distribution pipes is more than two. The number of the self-rotating guide vanes is equal to that of the second distribution pipes and they are in one-to-one correspondence. One end of each second distribution pipe is communicated with the side wall of the second central pipe, and the other end is an open structure as a chemical spraying port. The self-rotating guide vanes are connected to the side wall of the corresponding chemical spraying port of the second distribution pipe. The chemical agent is sprayed out from the chemical spraying port of the second distribution pipe and lands on the self-rotating guide vanes to form a vortex under the reaction force.

[0018] In order to strengthen the vortex and improve the mixing effect, the chemical spraying port of the second distribution pipe is located on the side of the self-rotating guide vane opposite to the original water flow direction.

[0019] In order to ensure the mixing effect, 4 - 8 self-rotating guide vanes are provided on each self-rotating guide vane assembly, and the self-rotating guide vanes on each self-rotating guide vane assembly are evenly distributed around the corresponding second central pipe.

[0020] As one specific implementation solution, the self-rotating guide vane is a planar structure, and the angle between the self-rotating guide vane and the original water flow direction is 25 - 75°.

[0021] As another specific implementation solution, the self-rotating guide vane is a curved surface structure.

[0022] In order to meet the water treatment requirements in different situations, the number of the turbulence grids is 1 - 3, and they are all installed inside the pipe body.

[0023] In order to achieve sufficient mixing of the chemical agent and water, the number of the turbulence guide vane assemblies on each turbulence grid is 2 - 12 groups. Further preferably, the number of the turbulence guide vane assemblies on each turbulence grid is an even number. The turbulence guide vane assemblies are evenly distributed around the corresponding central support pipe and are symmetric in pairs.

[0024] In order to improve the mixing effect, as one specific implementation solution, the middle support pipe includes a central support pipe and distribution support pipes. The number of the distribution support pipes is more than two. One end of each distribution support pipe is connected to the side wall of the central support pipe, and the other end is connected to the inner wall of the pipe body. Here, a detachable connection is preferably used. For example, a connection flange is provided at the end of the other end of the distribution support pipe, and the connection flange is connected to the inner wall of the pipe body through bolts. The number of the turbulence guide vane assemblies is equal to that of the distribution support pipes and they are in one-to-one correspondence. The turbulence guide vane assemblies are connected to the corresponding distribution support pipes. Of course, the central support pipe may not be provided, and one end of the distribution support pipes can be directly welded together. The "central support pipe" mentioned in the claims includes a pipe structure, and also includes other structures that can connect the "distribution support pipes" together, and also includes the central part formed by directly welding one end of the distribution support pipes together. The meanings of the remaining similar expressions (such as the first central pipe, the second central pipe, the turbulence central pipe, etc.) are similar.

[0025] As one of the specific implementation solutions, the spoiler vane assembly includes spoiler vanes and spoiler branch pipes;

[0026] The spoiler branch pipe includes a spoiler central pipe and spoiler distribution pipes. The spoiler central pipe is connected to the corresponding distribution support pipe. The number of spoiler distribution pipes is more than two. The number of spoiler vanes is equal to the number of spoiler distribution pipes and they correspond one by one. One end of the spoiler distribution pipe is connected to the side wall of the spoiler central pipe, and the other end is connected to the corresponding spoiler vane.

[0027] In order to improve the mixing effect, each spoiler vane assembly includes 4 - 8 spoiler vanes, and the spoiler vanes are circumferentially evenly distributed; the spoiler vanes form an angle of 25 - 75° with the original water flow direction.

[0028] The self - rotating vanes on the medicine spraying grid and the spoiler vanes on the spoiler grid are preferably arranged in a spiral pattern, similar to the arrangement of the blades of an electric fan.

[0029] When there are more than two medicine spraying grids, the self - rotating vanes of adjacent two medicine spraying grids are preferably arranged in opposite directions (alternately arranged clockwise and counterclockwise).

[0030] When there are more than two spoiler grids, the spoiler vanes of adjacent two spoiler grids are preferably arranged in opposite directions (alternately arranged clockwise and counterclockwise).

[0031] The self - rotating vanes of the medicine spraying grid and the spoiler vanes of its adjacent spoiler grid are preferably arranged in opposite directions (alternately arranged clockwise and counterclockwise).

[0032] Technologies not mentioned in the present utility model shall refer to the prior art.

[0033] The multi - point dosing self - swirling flow pipeline mixer of the present utility model realizes the swirling mixing of water flow and medicine through the settings of the medicine spraying grid and the spoiler grid, improves the flocculation effect, reduces the medicine consumption and energy consumption, and improves the water quality; without additional civil construction facilities and dynamic equipment, it can meet the requirements of rapid medicine mixing under the condition of low head loss, and can adapt to different working conditions with a large flow fluctuation range. Description of the Drawings

[0034] Figure 1 It is the front view structure diagram of the multi - point dosing self - swirling flow pipeline mixer of the present utility model.

[0035] Figure 2 It is the axonometric view of the medicine spraying grid of the present utility model.

[0036] Figure 3 It is the front view structure diagram of the self - rotating vane assembly of the present utility model.

[0037] Figure 4 It is the front view structure diagram of the spoiler grid of the present utility model.

[0038] In the figure, 1 is the pipe body, 2 is the chemical addition inlet pipe, 3 is the medicine spraying grid, 4 is the flow disturbance grid, 3-1 is the middle distribution pipe, 3-2 is the self-rotating guide vane assembly, 3-3 is the self-rotating guide vane, 3-4 is the medicine spraying branch pipe, 4-1 is the middle support pipe, 4-2 is the flow disturbance guide vane assembly, and 4-3 is the flow disturbance guide vane. Specific implementation manner

[0039] To better understand the present utility model, the content of the present utility model will be further clarified below in conjunction with embodiments. However, the content of the present utility model is not limited to the following embodiments.

[0040] In this application, orientation terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the drawings or during use. They are only for the convenience of describing this application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to this application.

[0041] Embodiment 1

[0042] As Figure 1 shown, a multi-point dosing self-vortex flow pipe mixer includes a pipe body 1, a chemical addition inlet pipe 2, a medicine spraying grid 3, and a flow disturbance grid 4;

[0043] Both the medicine spraying grid 3 and the flow disturbance grid 4 are installed in the pipe body 1, and the flow disturbance grid 4 is located downstream of the medicine spraying grid 3;

[0044] The medicine spraying grid 3 includes a middle distribution pipe 3-1 and a self-rotating guide vane assembly 3-2; the middle distribution pipe 3-1 is provided with a first medicine inlet and two or more first medicine outlets. The number of the self-rotating guide vane assemblies 3-2 is equal to the number of the first medicine outlets and corresponds one by one. The self-rotating guide vane assemblies 3-2 are connected to the corresponding first medicine outlets; one end of the chemical addition inlet pipe 2 is located outside the pipe body 1 as a chemical addition port, and the other end extends into the pipe body 1 and is communicated with the first medicine inlet;

[0045] The flow disturbance grid 4 includes a middle support pipe 4-1 and a flow disturbance guide vane assembly 4-2, and the flow disturbance guide vane assembly 4-2 is connected to the middle support pipe 4-1.

[0046] In use, the medicament is added from the dosing port of the dosing inlet pipe 2, flows through the middle distribution pipe 3-1 to the respective self-rotating guide vane assemblies 3-2 and is ejected, generating vortices to mix with the original water flow in the pipe body 1, and then forms vortices again through the flow-disturbing guide vane assemblies 4-2 of the flow-disturbing grille 4 to enhance the mixing effect. Without additional dynamic equipment, it can meet the requirements of rapid medicament mixing under the condition of low head loss and can adapt to different working conditions with a large flow fluctuation range.

[0047] Embodiment 2

[0048] On the basis of Embodiment 1, the following further improvements are made: As Figure 2 shown, in order to achieve full mixing of the medicament and water, 4 groups of self-rotating guide vane assemblies 3-2 are provided on each spraying grille 3; the self-rotating guide vane assemblies 3-2 are evenly distributed around the corresponding middle distribution pipe 3-1 and are symmetric in pairs. The number of flow-disturbing guide vane assemblies 4-2 on each flow-disturbing grille 4 is 4 groups, and the flow-disturbing guide vane assemblies 4-2 are evenly distributed around the middle support pipe 4-1 and are symmetric in pairs.

[0049] Embodiment 3

[0050] On the basis of Embodiment 2, the following further improvements are made: In order to improve the mixing effect, as Figure 2 shown, the middle distribution pipe 3-1 includes a first central pipe and a first distribution pipe. One end of the first central pipe is an open structure as the first medicine inlet, and the other end is a sealed end structure. The number of the first distribution pipes is four. One end of each first distribution pipe is connected to the side wall of the first central pipe, and the other end (this end is a sealed end structure) is connected to the inner wall of the pipe body 1. Here, it is a detachable connection. A connecting flange is provided at the end of the other end of the first distribution pipe, and the connecting flange is connected to the inner wall of the pipe body 1 through bolts; through holes are provided on the side wall of the first distribution pipe as the first medicine outlets.

[0051] The self-rotating guide vane assembly 3-2 includes a self-rotating guide vane 3-3 and a spraying branch pipe 3-4;

[0052] The spraying branch pipe 3-4 includes a second central pipe and a second distribution pipe. One end of the second central pipe is connected to the corresponding first medicine outlet, and the other end is a sealed end structure. The number of the second distribution pipes is four. The number of the self-rotating guide vanes 3-3 is equal to the number of the second distribution pipes and they are in one-to-one correspondence. One end of each second distribution pipe is connected to the side wall of the second central pipe, and the other end is an open structure as the spraying port. The self-rotating guide vane 3-3 is connected to the side wall of the corresponding spraying port of the second distribution pipe.

[0053] The middle support pipe 4-1 includes a central support pipe and distribution support pipes. The number of distribution support pipes is four. One end of each distribution support pipe is connected to the side wall of the central support pipe, and the other end is connected to the inner wall of the pipe body 1. Here, it is preferably a detachable connection. For example, a connection flange is provided at the end of the other end of the distribution support pipe, and the connection flange is connected to the inner wall of the pipe body 1 through bolts; the number of the spoiler vane assemblies 4-2 is equal to the number of the distribution support pipes and corresponds one by one, and the spoiler vane assemblies 4-2 are connected to the corresponding distribution support pipes.

[0054] The spoiler vane assembly 4-2 includes spoiler vanes 4-3 and spoiler branch pipes;

[0055] The spoiler branch pipes include spoiler central pipes and spoiler distribution pipes. The spoiler central pipes are connected to the corresponding distribution support pipes. The number of spoiler distribution pipes is four. The number of spoiler vanes 4-3 is equal to the number of spoiler distribution pipes and corresponds one by one. One end of the spoiler distribution pipe is connected to the side wall of the spoiler central pipe, and the other end is connected to the corresponding spoiler vane 4-3.

[0056] Embodiment 4

[0057] On the basis of Embodiment 3, the following further improvements are made: In order to strengthen the vortex and improve the mixing effect, the medicine spraying orifice of the second distribution pipe is located on the side of the spin vane 3-3 opposite to the original water flow direction.

[0058] In order to ensure the mixing effect, 6 spin vanes 3-3 are provided on each spin vane assembly 3-2, and the spin vanes 3-3 on each spin vane assembly 3-2 are evenly distributed around the corresponding second central pipe. Each spoiler vane assembly 4-2 includes 6 spoiler vanes 4-3, and the spoiler vanes 4-3 are evenly distributed circumferentially along the spoiler central pipe.

[0059] The spin vane 3-3 is a planar structure, and the spin vane forms an angle of 45° with the original water flow direction (in practice, it can also be designed as 30°, 60°, 75°, etc.). The spoiler vane 4-3 forms an angle of 45° with the original water flow direction (in practice, it can also be designed as 30°, 60°, 75°, etc.).

[0060] In this example, as Figure 1 shown, the number of the medicine spraying grilles 3 is 1, and the number of the spoiler grilles 4 is 2. The spin vanes 3-3 on the medicine spraying grille 3 and the spoiler vanes 4-3 on the spoiler grille 4 are both arranged in a spiral pattern, similar to the arrangement of the blades of an electric fan. The spoiler vanes 4-3 of the two spoiler grilles 4 are arranged in opposite directions (one is arranged clockwise and the other is arranged counterclockwise). The spin vanes 3-3 of the medicine spraying grille 3 and the spoiler vanes 4-3 of the adjacent spoiler grille 4 are arranged in opposite directions.

[0061] The mixers in the above examples do not require additional civil engineering facilities and moving equipment. They can meet the requirements of rapid chemical mixing under the condition of low head loss (less than 0.3 - 0.4 m), and can adapt to different working conditions with a large flow fluctuation range (greater than 1 m 3 / s).

Claims

1. A multi-point injection self-vortex flow pipeline mixer, characterized in that: It includes a pipeline body (1), a chemical addition inlet pipeline (2), and a medicine spraying grille (3); the medicine spraying grille (3) is installed inside the pipeline body (1); the medicine spraying grille (3) includes a middle distribution pipeline (3-1) and a self-rotating guide vane assembly (3-2); the middle distribution pipeline (3-1) is provided with a first medicine inlet and more than two first medicine outlets, the number of the self-rotating guide vane assemblies (3-2) is equal to the number of the first medicine outlets and corresponds to them one by one, and the self-rotating guide vane assemblies (3-2) are connected to the corresponding first medicine outlets; one end of the chemical addition inlet pipeline (2) is located outside the pipeline body (1) as a chemical addition port, and the other end extends into the pipeline body (1) and is communicated with the first medicine inlet.

2. The multi-point injection self-vortex flow pipeline mixer according to claim 1, characterized in that: It further includes a flow disturbing grille (4), the flow disturbing grille (4) is installed inside the pipeline body (1) and is located downstream of the medicine spraying grille (3); the flow disturbing grille (4) includes a middle support pipeline (4-1) and a flow disturbing guide vane assembly (4-2), and the flow disturbing guide vane assembly (4-2) is connected to the middle support pipeline (4-1).

3. The multi-point injection self-vortex flow pipeline mixer according to claim 1 or 2, characterized in that: The number of the medicine spraying grilles (3) is 1 - 3, and they are all installed inside the pipeline body (1); One end of the chemical addition inlet pipeline (2) is located outside the pipeline body (1), and the other end branches into 1 - 3 medicine spraying branch pipelines. The number of the medicine spraying branch pipelines is equal to the number of the medicine spraying grilles (3) and corresponds to them one by one. The medicine spraying branch pipelines extend into the pipeline body (1) and are communicated with the first medicine inlets on the corresponding medicine spraying grilles; or, the number of the chemical addition inlet pipelines (2) is equal to the number of the medicine spraying grilles (3) and corresponds to them one by one. One end of the chemical addition inlet pipeline (2) is located outside the pipeline body (1), and the other end extends into the pipeline body (1) and is communicated with the first medicine inlet on the corresponding medicine spraying grille (3); Each medicine spraying grille (3) is provided with 2 - 12 groups of self-rotating guide vane assemblies (3-2).

4. The multi-point injection self-vortex flow pipeline mixer according to claim 1 or 2, wherein: The middle distribution pipeline (3-1) includes a first central pipe and a first distribution pipe. One end of the first central pipe is an open structure as the first medicine inlet, and the other end is a sealed end structure. The number of the first distribution pipes is more than two. One end of the first distribution pipe is communicated with the side wall of the first central pipe, and the other end is connected to the inner wall of the pipeline body (1); through holes are provided on the side wall of the first distribution pipe as the first medicine outlets.

5. The multi-point injection self-vortex flow pipeline mixer according to claim 1 or 2, characterized in that: The self-rotating guide vane assembly (3-2) includes a self-rotating guide vane (3-3) and a medicine spraying branch pipe (3-4); The medicine spraying branch pipe (3-4) includes a second central pipe and a second distribution pipe. One end of the second central pipe is communicated with the corresponding first medicine outlet, and the other end is a sealed end structure. The number of the second distribution pipes is more than two. The number of the self-rotating guide vanes (3-3) is equal to the number of the second distribution pipes and corresponds to them one by one. One end of the second distribution pipe is communicated with the side wall of the second central pipe, and the other end is an open structure as a medicine spraying port. The self-rotating guide vane (3-3) is connected to the side wall of the corresponding medicine spraying port of the second distribution pipe.

6. The multi-point injection self-vortex flow pipeline mixer according to claim 5, wherein: The medicine spraying ports of the second distribution pipes are located on the side of the self-rotating guide vane (3-3) opposite to the original water flow direction; Each self-rotating guide vane assembly (3-2) is provided with 4 - 8 self-rotating guide vanes (3-3), and the self-rotating guide vanes (3-3) on each self-rotating guide vane assembly (3-2) are evenly distributed around the corresponding second central pipe; The spin guide vane (3-3) is a planar structure, and the spin guide vane forms an angle of 25 to 75° with the original water flow direction; or the spin guide vane (3-3) is a curved surface structure.

7. The multi-point injection self-whirlpool flow pipeline mixer according to claim 2, characterized in that: The number of the flow disturbance grilles (4) is 1 - 3, and all are installed in the pipeline body (1); the number of the flow disturbance vane assemblies (4-2) on each flow disturbance grille (4) is 2 - 12 groups.

8. The multi-point dosing self-whirling flow pipeline mixer according to claim 2, wherein: The middle support pipeline (4-1) includes a central support pipe and distribution support pipes. The number of the distribution support pipes is more than two. One end of each distribution support pipe is connected to the side wall of the central support pipe, and the other end is connected to the inner wall of the pipeline body (1); the number of the flow disturbance vane assemblies (4-2) is equal to the number of the distribution support pipes and corresponds one by one, and the flow disturbance vane assemblies (4-2) are connected to the corresponding distribution support pipes.

9. The multi-point injection self-vortex flow pipeline mixer according to claim 8, characterized in that: The flow disturbance vane assembly (4-2) includes a flow disturbance vane (4-3) and a flow disturbance branch pipe; The flow disturbance branch pipe includes a flow disturbance central pipe and flow disturbance distribution pipes. The flow disturbance central pipe is connected to the corresponding distribution support pipe. The number of the flow disturbance distribution pipes is more than two. The number of the flow disturbance vanes (4-3) is equal to the number of the flow disturbance distribution pipes and corresponds one by one. One end of the flow disturbance distribution pipe is connected to the side wall of the flow disturbance central pipe, and the other end is connected to the corresponding flow disturbance vane (4-3).

10. The multi-point injection self-whirlpool flow pipeline mixer according to claim 9, characterized in that: The flow disturbance vane assembly (4-2) contains 4 - 8 flow disturbance vanes (4-3), and the flow disturbance vanes (4-3) are circumferentially evenly distributed; The flow disturbance vane (4-3) forms an angle of 25 to 75° with the original water flow direction.