Multi-stage split-flow type micro mixer

Abstract

The utility model is applicable to the technical field of micro-mixers, and provides a multi-stage split-flow micro-mixer, which comprises a substrate, two liquid inlet channels are arranged at one end in the substrate, two liquid inlets are arranged on the surface of the substrate, the two liquid inlets are respectively communicated with one ends of the two liquid inlet channels, and the other ends of the two liquid inlet channels are communicated with the liquid inlet channels. A first flow mixing section is arranged in the base plate, and the other ends of the two liquid inlet channels communicate with one end of the interior of the first flow mixing section. According to the multi-stage split-flow type micro mixer, liquid is subjected to turbulent flow through a plurality of first triangular spoilers and then is primarily mixed, the primarily mixed liquid is subjected to split flow through two guide channels and then is injected into inner cavities of two different second mixed flow sections, and then the liquid is subjected to secondary mixing through a plurality of second triangular spoilers and then is subjected to secondary mixing through a plurality of second triangular spoilers, so that the multi-stage split-flow type micro mixer is formed. And after the liquid is converged through the flow mixing cavity, the liquid can be mixed again by utilizing the flow mixing cavity and the fixed sheet, so that the liquid mixing effect is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of micro mixers, and in particular relates to a multi-stage flow-dividing micro mixer. Background Art

[0002] A micromixer is a microfluidic device developed in recent years. It achieves rapid and uniform mixing of samples in a microchannel or microchamber. It is suitable for the thorough mixing of two or more different reactants under microscale conditions. The working principle of the micromixer varies depending on the type.

[0003] In the prior art, passive micromixers mainly rely on the geometric shape and fluid dynamics of the mixer itself to achieve mixing. However, traditional micromixers are usually limited to using a single mixing channel or structure, resulting in poor mixing efficiency of the micromixer. Utility Model Content

[0004] The utility model provides a multi-stage split flow micro mixer, aiming to solve the problem that traditional micro mixers are usually limited to adopting a single mixing channel or structure, resulting in poor mixing efficiency of the micro mixer.

[0005] The utility model is implemented as follows: a multi-stage split flow micro mixer comprises a substrate, one end of the interior of the substrate is provided with two liquid inlet channels, the surface of the substrate is provided with two liquid inlets, the two liquid inlets are respectively connected to one end of the two liquid inlet channels;

[0006] A first flow mixing section is provided inside the substrate, the other ends of the two liquid inlet channels are connected to one end inside the first flow mixing section, and a plurality of first triangular spoilers are provided inside the first flow mixing section;

[0007] Two second mixing sections are provided at the other end of the interior of the substrate, the other end of the inner cavity of the first mixing section is connected to two guide channels, the other ends of the two guide channels are respectively connected to one end of the inner cavity of the second mixing section, a plurality of second triangular spoilers are provided inside the second mixing section, and a drainage structure is provided at the other end of the interior of the substrate.

[0008] Preferably, the drainage structure includes a mixing flow cavity, which is arranged at the other end of the interior of the substrate, the other end of the inner cavity of the second mixing flow section is connected to a drainage channel, the other end of the drainage channel is connected to the interior of the mixing flow cavity, the other side of the mixing flow cavity is connected to a confluence channel, and the other end of the substrate surface is provided with a drainage port connected to the other end of the inner cavity of the confluence channel.

[0009] Preferably, a fixing rod is fixedly connected to the interior of the mixing chamber, and a plurality of fixing plates are fixedly connected to the surface of the fixing rod, and the plurality of fixing plates are evenly distributed and spaced in a ring along the surface of the fixing rod.

[0010] Preferably, the plurality of first triangular spoilers and the plurality of second triangular spoilers are arranged alternately.

[0011] Preferably, a plurality of flow-disrupting protrusions are fixedly connected to the inner wall surface of the second flow-mixing section, and the plurality of flow-disrupting protrusions are evenly spaced and arranged along the inner wall surface of the second flow-mixing section.

[0012] Preferably, the first triangular spoiler and the second triangular spoiler are in opposite directions. Beneficial effects

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] Different liquids are injected into the inner cavity of the liquid inlet channel through the liquid inlet port, and different liquids are injected into the inner cavity of the first mixing section through the two liquid inlet channels. After the liquids are disturbed by multiple first triangular spoilers, the liquids are preliminarily mixed. After the preliminarily mixed liquids are diverted through two guide channels, they are injected into two different second mixing section inner cavities. After the liquids are mixed for a second time through multiple second triangular spoilers and converged through the mixing chamber, the mixing chamber and the fixing plate are used to mix the liquids again, thereby achieving a better mixing effect of the liquids and improving the mixing efficiency of the liquids. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front cross-sectional structural diagram of the present utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the mixed flow chamber and the fixing plate in the present invention;

[0017] Figure 3 It is a structural schematic diagram of the second mixing section and the spoiler protrusion in the present invention.

[0018] In the figure: 1. substrate; 2. liquid inlet channel; 3. liquid inlet port; 4. first mixing section; 5. first triangular spoiler; 6. guide channel; 7. second mixing section; 8. second triangular spoiler; 9. drainage channel; 10. mixing chamber; 11. fixing rod; 12. fixing plate; 13. converging channel; 14. drainage port; 15. spoiler bump. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] See also Figure 1-3 The utility model provides a technical solution: a multi-stage split flow micro mixer, comprising a substrate 1, two liquid inlet channels 2 are provided at one end inside the substrate 1, and two liquid inlets 3 are provided on the surface of the substrate 1, and the two liquid inlets 3 are respectively connected to one end of the two liquid inlet channels 2.

[0021] A first flow mixing section 4 is provided inside the substrate 1 . The other ends of the two liquid inlet channels 2 are connected to one end inside the first flow mixing section 4 . A plurality of first triangular spoilers 5 are provided inside the first flow mixing section 4 .

[0022] Two second flow mixing sections 7 are provided at the other end of the interior of the substrate 1 , and the other end of the inner cavity of the first flow mixing section 4 is connected to two guide channels 6 .

[0023] The other ends of the two guide channels 6 are respectively communicated with one end of the inner cavity of a second mixing section 7. A plurality of second triangular spoilers 8 are provided inside the second mixing section 7. A drainage structure is provided at the other end of the substrate 1.

[0024] The liquid inlet 3 injects different liquids into the inner cavity of the liquid inlet channel 2, and the two liquid inlet channels 2 inject different liquids into the inner cavity of the first mixing section 4. After the liquid is disturbed by multiple first triangular spoilers 5, the liquid is preliminarily mixed. After the preliminary mixing is completed, the liquid is diverted through two guide channels 6 and injected into the inner cavities of two different second mixing sections 7, and then the liquid is secondary mixed by multiple second triangular spoilers 8.

[0025] Furthermore, the drainage structure includes a mixing chamber 10, which is arranged at the other end of the interior of the substrate 1, and the other end of the inner cavity of the second mixing section 7 is connected to a drainage channel 9, and the other end of the drainage channel 9 is connected to the interior of the mixing chamber 10, and the other side of the mixing chamber 10 is connected to a confluence channel 13, and the other end of the surface of the substrate 1 is provided with a drainage port 14 connected to the other end of the inner cavity of the confluence channel 13.

[0026] In this embodiment, the two drainage channels 9 guide the secondary mixed liquid into the inner cavity of the mixing chamber 10 for confluence. After confluence, the liquid can be discharged through the confluence channel 13 and the drainage port 14.

[0027] Furthermore, a fixing rod 11 is fixedly connected to the interior of the mixing chamber 10 , and a plurality of fixing plates 12 are fixedly connected to the surface of the fixing rod 11 . The plurality of fixing plates 12 are evenly spaced and distributed in a circular pattern along the surface of the fixing rod 11 .

[0028] In this embodiment, after the mixing chamber 10 merges, the mixing chamber 10 and the fixing plate 12 can be used to mix the liquid again, so that the mixing effect of the liquid is better and the mixing efficiency of the liquid is improved.

[0029] Furthermore, the plurality of first triangular spoilers 5 and the plurality of second triangular spoilers 8 are arranged alternately, and the directions of the first triangular spoilers 5 and the second triangular spoilers 8 are opposite.

[0030] In this embodiment, the first triangular spoilers 5 and the second triangular spoilers 8 are staggered and arranged in opposite directions, thereby improving the mixing effect on the liquid.

[0031] Furthermore, a plurality of flow-disrupting protrusions 15 are fixedly connected to the inner wall surface of the second flow-mixing section 7 , and the plurality of flow-disrupting protrusions 15 are evenly spaced and arranged along the inner wall surface of the second flow-mixing section 7 .

[0032] In this embodiment, the flow-disturbing protrusion 15 improves the flow-disturbing effect on the liquid in the inner cavity of the second mixing section 7, thereby better improving the mixing effect of the liquid.

[0033] The working principle and usage process of the present invention are as follows: After the present invention is installed, the liquid inlet 3 injects different liquids into the inner cavity of the liquid inlet channel 2, and the two liquid inlet channels 2 inject different liquids into the inner cavity of the first mixing section 4. After the liquid is disturbed by multiple first triangular spoilers 5, the liquid is preliminarily mixed. After the preliminary mixing is completed, the liquid is diverted through two guide channels 6 and injected into two different second mixing sections 7 inner cavities. After the liquid is mixed for the second time through multiple second triangular spoilers 8 and converged through the mixing chamber 10, the mixing chamber 10 and the fixing plate 12 can be used to mix the liquid again, so that the mixing effect of the liquid is better and the mixing efficiency of the liquid is improved.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-stage split flow micro mixer, characterized in that: It comprises a substrate (1), one end of the interior of the substrate (1) is provided with two liquid inlet channels (2), the surface of the substrate (1) is provided with two liquid inlet ports (3), and the two liquid inlet ports (3) are respectively connected to one end of the two liquid inlet channels (2); A first flow mixing section (4) is provided inside the substrate (1); the other ends of the two liquid inlet channels (2) are both connected to one end inside the first flow mixing section (4); and a plurality of first triangular spoilers (5) are provided inside the first flow mixing section (4); The other end of the interior of the substrate (1) is provided with two second mixing sections (7), the other end of the inner cavity of the first mixing section (4) is connected to two guide channels (6), the other ends of the two guide channels (6) are respectively connected to one end of the inner cavity of one second mixing section (7), a plurality of second triangular spoilers (8) are provided inside the second mixing section (7), and the other end of the interior of the substrate (1) is provided with a liquid drainage structure.

2. A multi-stage split flow micro mixer according to claim 1, characterized in that: The drainage structure comprises a mixing chamber (10), wherein the mixing chamber (10) is arranged at the other end of the interior of the substrate (1), the other end of the inner cavity of the second mixing section (7) is connected to a drainage channel (9), the other end of the drainage channel (9) is connected to the interior of the mixing chamber (10), the other side surface of the mixing chamber (10) is connected to a confluence channel (13), and the other end of the surface of the substrate (1) is provided with a drainage port (14) connected to the other end of the inner cavity of the confluence channel (13).

3. A multi-stage split flow micro mixer according to claim 2, characterized in that: A fixing rod (11) is fixedly connected to the interior of the mixed flow chamber (10), and a plurality of fixing plates (12) are fixedly connected to the surface of the fixing rod (11), wherein the plurality of fixing plates (12) are evenly spaced and distributed in a circular pattern along the surface of the fixing rod (11).

4. The multi-stage split flow micro mixer according to claim 1, characterized in that: The plurality of first triangular spoilers (5) and the plurality of second triangular spoilers (8) are arranged in an interlaced manner.

5. The multi-stage split flow micro mixer according to claim 1, characterized in that: A plurality of flow-disrupting convex blocks (15) are fixedly connected to the inner wall surface of the second flow-mixing section (7), and the plurality of flow-disrupting convex blocks (15) are evenly spaced and arranged along the inner wall surface of the second flow-mixing section (7).

6. The multi-stage split flow micro mixer according to claim 1, characterized in that: The first triangular spoiler (5) and the second triangular spoiler (8) are in opposite directions.

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