CN220861257U

CN220861257U - Micro-mixing unit

Info

Publication number: CN220861257U
Application number: CN202322521419.9U
Authority: CN
Inventors: 王纯星; 陆福洲
Original assignee: Nanjing Fuyuan Chemical Pipeline Equipment Co ltd
Current assignee: Nanjing Fuyuan Chemical Pipeline Equipment Co ltd
Priority date: 2023-09-15
Filing date: 2023-09-15
Publication date: 2024-04-30
Anticipated expiration: 2033-09-15

Abstract

The utility model relates to the technical field of fluid mixing, in particular to a micro-mixing unit, which comprises at least one micro-mixing unit body, wherein the micro-mixing unit body sequentially comprises a first step, a second step and a third step from top to bottom, a mixing channel is formed in the first step, at least two diversion channels are formed in the side face of the second step, and the diversion channels are communicated with the mixing channel; the third step bottom is provided with at least two converging channels and the converging channels are communicated with the mixing channel. The utility model integrally adopts a ladder-shaped structure, has higher strength, and avoids influencing the liquid mixing effect due to mutual extrusion deformation of the mixing units; the fluid state of the fluid in the flow channel is in a turbulent state, so that the rapid dispersion and mixing of the fluid are easy to realize; in addition, the stepped structure makes the fluid speed change continuously, strengthens the mutual collision among the fluid micro units, and is easier to strengthen the mixing effect among the fluids.

Description

Micro-mixing unit

Technical Field

The utility model relates to the technical field of fluid mixing, in particular to a micro-mixing unit.

Background

Most of mixing units used in the existing fluorine material static mixer are SX-type blade-type or X-type mixing units, deformation is easy to generate when the pressure difference is large or the temperature is high, and the situation that blades are broken and rushed out of the mixer is caused when the pressure difference is severe, so that the using effect is influenced.

Disclosure of utility model

The utility model solves the problems in the related art, and provides the micro-mixing unit which has higher strength and avoids the influence on the liquid mixing effect caused by mutual extrusion deformation of the mixing units because the whole micro-mixing unit adopts a ladder-shaped structure; the fluid state of the fluid in the flow channel is in a turbulent state, so that the rapid dispersion and mixing of the fluid are easy to realize; in addition, the stepped structure makes the fluid speed change continuously, strengthens the mutual collision among the fluid micro units, and is easier to strengthen the mixing effect among the fluids.

In order to solve the technical problems, the utility model is realized by the following technical scheme: the micro-mixing unit comprises at least one micro-mixing unit body, wherein the micro-mixing unit body sequentially comprises a first step, a second step and a third step from top to bottom, a mixing channel is formed in the first step, at least two diversion channels are formed in the side face of the second step, and the diversion channels are communicated with the mixing channel; the third step bottom is provided with at least two converging channels and the converging channels are communicated with the mixing channel.

Preferably, the outer diameter sizes of the first step, the third step and the second step are sequentially reduced.

Preferably, the outer diameter of the first step is matched to the inner diameter of the mixer or reaction tube.

Preferably, the outer diameter of the second step is 3-5 mm smaller than the inner diameter of the mixer or the reaction tube.

Preferably, the outer diameter of the third step is 1.5-2 mm smaller than the inner diameter of the mixer or the reaction tube.

Compared with the prior art, the utility model has the beneficial effects that:

(1) The whole adopts a ladder-shaped structure, has higher strength, and avoids influencing the liquid mixing effect due to mutual extrusion deformation of the mixing units;

(2) The flow channel forms of stepped and dispersive mixing are adopted, fluid is continuously split and mixed when flowing through the micro-mixing unit, the local flow velocity of the fluid is high, the fluid state in the flow channel is in a turbulent state, and the rapid dispersion and mixing of the fluid are easy to realize; in addition, the ladder-shaped structure enables the fluid speed to be changed continuously, so that the mutual collision among the fluid micro units is enhanced, and the mixing effect among the fluids is easier to enhance;

(3) The outer diameter of the first step is matched with the inner diameter of the mixer or the reaction tube, so that two fluid flows from the last mixing unit are mixed into one fluid flow more completely; the outside diameter dimension at the second step is 3-5mm smaller than the inside diameter dimension of the mixer or reaction tube in order to reduce and rectify at least two streams into which one stream from the first step is split; the outer diameter size of the third step is 1.5-2 mm smaller than the inner diameter size of the mixer or the reaction tube, so that the fluid size is rectified to the micro-size, thereby realizing the micro-scale effect, further facilitating the mixing of the fluid, and at least two flows fully mixed under the micro-scale effect are re-divided into at least two flows at the lower part to enter the next micro-mixing unit, so that the full mixing of the fluid is realized.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a cross-sectional view A-A of FIG. 1 in accordance with the present utility model;

FIG. 3 is a B-directed view of FIG. 1 in accordance with the present utility model;

Fig. 4 is a cross-sectional view of the C-C of fig. 2 in accordance with the present utility model.

In the figure:

1. First step, 101, mixing channel, 2, second step, 201, split channel, 3, third step, 301, converging channel.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

As shown in fig. 1 to 4, a micro-mixing unit comprises at least one micro-mixing unit body, wherein the micro-mixing unit body sequentially comprises a first step 1, a second step 2 and a third step 3 from top to bottom, a mixing channel 101 is formed in the first step 1, at least two diversion channels 201 are formed in the side face of the second step 2, the diversion channels 201 are communicated with the mixing channel 101, fluid converged in the mixing channel 101 is divided into at least two paths and enters into a space at the second step 2 and the pipe wall of a mixer (or a reaction pipe), and the two separated paths of fluid are mixed with the original fluid after impacting the pipe wall and then continuously flow to the third step 3; at least two converging channels 301 are arranged at the bottom of the third step 3, the converging channels 301 are communicated with the mixing channel 101, the third step 3 belongs to a micro-scale space, the fluid which is slowed down at the second step 2 is accelerated again in the space, the shearing action between the fluids is promoted, and the lower part of the step is newly divided into two or more than two streams through the converging channels 301 and is converged into the next micro-mixing unit body.

In the above embodiment, the micro-mixing unit has a three-step structure, and of course, when the micro-mixing unit has two micro-mixing unit bodies, the micro-mixing unit has a six-step structure, and the principle is similar to that of the three-step structure, and the details are not repeated here.

In one embodiment, the outer diameter sizes of the first step 1, the third step 3 and the second step 2 are sequentially reduced, and specifically, the outer diameter size of the first step 1 is matched with the inner diameter size of the mixer or the reaction tube; the outer diameter of the second step 2 is 3-5 mm smaller than the inner diameter of the mixer or the reaction tube; the outer diameter size of the third step 3 is 1.5-2 mm smaller than the inner diameter size of the mixer or the reaction tube, a micro-size space is formed at the third step 3, and the fluid size is rectified to the micro-size, so that the micro-size effect is realized, the mixing of the fluid is more facilitated, at least two streams of fluid which are fully mixed under the micro-size effect are re-divided into at least two streams at the lower part to enter the next micro-mixing unit, and the full mixing of the fluid is realized.

Wherein the theoretical cross-sectional area of the mixing channel 101 is the sum of the theoretical cross-sectional areas of the respective flow dividing channels 201 or is slightly smaller than the sum of the theoretical cross-sectional areas of the respective flow dividing channels 201; where the theoretical interfacial area of the mixing channel 101 is the sum of the theoretical interfacial areas of the converging channels 301 or slightly less than the sum of the theoretical cross-sectional areas of the converging channels 301.

The micro-mixing unit body may be manufactured by a finish machining method such as injection molding or turning.

When the micro-mixing device is used, a plurality of micro-mixing units can be arranged in the mixer or the reaction tube, and fluids are continuously dispersed, mixed, redispersed and mixed after flowing through the micro-mixing units, and meanwhile, the direction and the speed of the fluids are continuously changed due to the local micro-scale effect, so that the fluids are continuously sheared, and the full mixing of the fluids is realized.

The above is a preferred embodiment of the present utility model, and a person skilled in the art can also make alterations and modifications to the above embodiment, therefore, the present utility model is not limited to the above specific embodiment, and any obvious improvements, substitutions or modifications made by the person skilled in the art on the basis of the present utility model are all within the scope of the present utility model.

Claims

1. A micro-mixing unit characterized by: the micro-mixing unit comprises at least one micro-mixing unit body, wherein the micro-mixing unit body sequentially comprises a first step, a second step and a third step from top to bottom, a mixing channel is formed in the first step, at least two diversion channels are formed in the side face of the second step, and the diversion channels are communicated with the mixing channel; the third step bottom is provided with at least two converging channels and the converging channels are communicated with the mixing channel.

2. The micromixing unit of claim 1 wherein: the outer diameter sizes of the first step, the third step and the second step are sequentially reduced.

3. The micromixing unit of claim 2 wherein: the outer diameter of the first step is sized to match the inner diameter of the mixer or reaction tube.

4. The micromixing unit of claim 2 wherein: the outer diameter of the second step is 3-5 mm smaller than the inner diameter of the mixer or the reaction tube.

5. The micromixing unit of claim 2 wherein: the outer diameter of the third step is 1.5-2 mm smaller than the inner diameter of the mixer or the reaction tube.