CN217663409U - Microchannel and microfluidic hybrid device - Google Patents

Abstract

A micro-channel and micro-fluidic hybrid device relates to the technical field of micro-fluidic structures, and comprises a first material inlet, a second material inlet, a branch channel, a barrier channel and a material outlet; the first material inlet is communicated with the inlet ends of the two branch passages through a first linear passage, the outlet ends of the two branch passages are communicated with the second material inlet through a second linear passage, and the common outlet end of the second material inlet and the branch passages is set as a three-way port; the barrier channel is provided with a gathering end and a diverging end, two shunting channels are simultaneously communicated between the gathering end and the diverging end, and a plurality of barrier structures are arranged in the shunting channels; the diverging end is communicated with the three-way port, and the converging end is communicated with the material outlet through a third linear channel. The utility model discloses a stack of the multiple hybrid mode that sets up in succession forms the convergence-disperses the type flow many times, has shortened fluid passage, has reduced the mixing time, has increased mixed effect.

Description

Microchannel and microfluidic hybrid device

Technical Field

The utility model relates to a micro-fluidic structure technical field, concretely relates to microchannel and micro-fluidic mixing device.

Background

The microfluidic technology can be used for synthesizing nano materials, and the properties of the nano materials are regulated and controlled by fast mixing, fast mass transfer, accurate control of reaction conditions, addition of reagents and the like. Meanwhile, the nano material can be continuously produced in the microfluidic mixer, and can be amplified through multi-channel parallel, so that large-scale production is realized.

Various microfluidic mixing devices are currently on the market for the preparation of nanomaterials, most of which are designed based on a certain mixture. Such as T-shaped or Y-shaped microchannels, where mixing occurs at the interface between the two fluids, typically requires long mixing times. Like the three-dimensional serpentine channel structure, the fish bone structure is embedded inside, and the mixing of liquid is realized through additional fluid disturbance, but the structure is very easy to block the nano particles, and the nano particles are easily embedded into the staggered fish bone structure when the liquid rolls. For example, the twisted channels can separate and reunite liquid to increase mixing of two fluids, but tend to bring about higher fluid resistance.

Thus, there is a need for improvements, and the present invention provides a microchannel and microfluidic mixing device.

SUMMERY OF THE UTILITY MODEL

To the not enough that prior art exists, the utility model aims to provide a microchannel and micro-fluidic mixing device, concrete scheme is as follows:

a microchannel and microfluidic mixing device, the device comprising a first material inlet, a second material inlet, a branch channel, a barrier channel, a material outlet;

the first material inlet is simultaneously communicated with the inlet ends of the two branch passages through a first linear passage, the outlet ends of the two branch passages are simultaneously communicated with the second material inlet through a second linear passage, the common outlet end of the second material inlet and the branch passages is set as a three-way opening, and the inner diameter of the three-way opening is gradually reduced;

the barrier channels are provided with gathering ends and diverging ends, two shunting channels are simultaneously communicated between the gathering ends and the diverging ends, a plurality of barrier structures are arranged in the shunting channels, and each barrier structure is composed of a plurality of barrier columns which are arranged in an annular matrix;

the diverging end is communicated with the three-way port, and the converging end is communicated with the material outlet through a third linear channel.

Further, the barrier passage is provided with at least two.

Furthermore, the shunting passage is provided with the position of the barrier structure, and the inner diameter of the shunting passage is larger than the inner diameters of other positions of the shunting passage.

Further, the inner diameter of the tail end of the shunt passage is gradually reduced.

Furthermore, the whole barrier column is crescent.

Further, the recess of the barrier post is disposed toward the emission end.

Furthermore, the edges of the joints of the first linear channel, the second linear channel and the two branch channels are all in a fillet transition structure.

Furthermore, the edge of the junction of the barrier channel and the third linear channel adopts a round-cornered transition structure.

Compared with the prior art, the beneficial effects of the utility model are as follows:

(1) After entering from the first material inlet, the first aqueous phase solution is divided into two branches under the action of the branch passage, then the two branches of the first aqueous phase solution are converged at two sides of the second linear passage to form a focusing fluid, the second oil phase solution enters from the second material inlet to extrude the second oil phase solution in the second linear passage, and the mixing of the two materials is accelerated at the joint of the branch passage and the second linear passage;

the mixed materials form convergence at the tail end of the three-way port, then the divergent ends of the barrier channels form diffusion, then the mixed materials are divided into two paths, namely the mixed materials enter the two shunting channels respectively, and because each shunting channel is provided with a barrier structure and barrier columns are arranged in an annular matrix, the mixed materials are subjected to diffusion flow around the barrier columns, irregular flows such as secondary flow, backflow or chaotic convection can be formed, the molecular diffusion is enhanced, and the mixing effect of liquid is accelerated;

the materials after further mixing are converged at the tail end of each flow distribution channel, then form a focusing fluid at the convergence end together, and finally the materials after multiple mixing are discharged from a material outlet which can be connected with a pipeline for product collection;

to summarize, compare the current technique that sets up complicated, distortion passageway, the utility model discloses a stack of the multiple hybrid mode that sets up in succession forms the convergence-type of dispersing to flow many times, has shortened fluid passage, has reduced the mixing time, has reduced the pipeline resistance, has increased the mixed effect for mixing speed.

(2) By arranging more than two barrier channels, the focusing fluid flowing out of the first barrier channel continues to enter the barrier channels, and the mixing effect of the liquid can be further accelerated in the same way.

(3) The barrier column is integrally crescent-shaped, the surface is smooth, and the concave part of the barrier column is arranged towards the divergent end, so that a guiding effect on liquid can be achieved, and the possibility that nano particles are embedded into or detained in the barrier structure when the liquid rolls over can be comprehensively reduced;

(4) Through setting up the round corner transition structure, reduce the nanometer particle greatly and take place the possibility of retardation and jam in the switching.

Drawings

Fig. 1 is an overall schematic view of an embodiment of the present invention;

fig. 2 is an enlarged schematic view of a portion a of fig. 1.

Reference numerals: 1. a first material inlet; 2. a second material inlet; 3. a branch passage; 4. an obstructed passage; 41. gathering ends; 42. a dispersing end; 43. a flow dividing channel; 5. a material outlet; 6. a three-way opening; 7. a first linear channel; 8. a second linear channel; 9. a third linear channel; 10. a barrier structure; 11. a barrier column.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.

As shown in figure 1, a microchannel and micro-fluidic mixing device, the device includes first material entry 1, second material entry 2, branch road channel 3, obstacle passageway 4, material export 5, and through the cooperation of these several kinds of structures, makes the utility model discloses the realization adopts the focus mode to mix two liquid to form the convergence-type of dispersing and flow many times, introduce crescent obstacle post 11 simultaneously in liquid mixing, belong to multiple hybrid combination design, can make liquid realize flash mixed in the short time.

In order to realize the introduction of the first aqueous phase solution, the first aqueous phase solution is pumped into the first material inlet 1 through a pressure pump or an injection pump, the first material inlet 1 is simultaneously communicated with the inlet ends of the two branch passages 3 through one first linear passage 7, the two branch passages 3 are symmetrically arranged by taking the first linear passage 7 as an axis, and the first aqueous phase solution in the first linear passage 7 is averagely distributed to the two branch passages 3.

In order to introduce the second oil phase solution, the second water phase solution is pumped into the second material inlet 2 by a pressure pump or a syringe pump, the outlet ends of the two branch passages 3 are simultaneously communicated with the second material inlet 2 through a second linear passage 8, and the two branch passages 3 are also symmetrically arranged by taking the second linear passage 8 as an axis, so that, as can be seen from fig. 1, the two branch passages 3 are integrally enclosed into a waist-shaped annular structure, the second linear passage 8 is positioned in the annular structure, and the first linear passage 7 is positioned outside the annular structure. The feeding speed of the second material inlet 2 is lower than that of the first material inlet 1, the first aqueous phase solutions at two sides impact the second oil phase solution in the second linear channel 8 towards the middle, and the mixing of the two materials is accelerated at the joint of the branch channel 3 and the second linear channel 8.

The first solution and the second solution can also be directly injected by a syringe.

For convenience of description, the common outlet end of the second material inlet 2 and the branch passage 3 is set as a three-way opening 6, the inner diameter of the three-way opening 6 is gradually reduced, the three passages are converged to form a focusing fluid at the three-way opening 6, and the mixed material is converged at the tail end of the three-way opening 6, and the converged position can be referred to as a position a in fig. 1 and continuously flows to the barrier passage 4.

Obstacle passageway 4 wholly is the ring structure, obstacle passageway 4 is formed with gathers together end 41, it holds 42 to diverge, gather together end 41, it has two reposition of redundant personnel passageways 43 to diffuse the intercommunication simultaneously between the end 42, two reposition of redundant personnel passageways 43 are the symmetry and set up, be equipped with two obstacle structures 10 in every reposition of redundant personnel passageway 43, be the interval setting between the obstacle structure 10, for the convenience of obstacle structure 10 plays a role, reposition of redundant personnel passageway 43 is equipped with the position department of obstacle structure 10, its internal diameter is greater than the internal diameter of reposition of redundant personnel passageway 43 other positions, and the terminal internal diameter of reposition of redundant personnel passageway 43 reduces gradually. The barrier structure 10 is composed of a plurality of barrier pillars 11 arranged in a circular matrix, and it can be seen that the flow dividing channel 43 is circular at the barrier structure 10 and is long-strip at other positions.

The specific connection relationship of the barrier passage 4 is as follows: the diverging end 42 is connected to the three-way port 6, and the converging end 41 is connected to the material outlet 5 via a third linear passage 9.

The materials flowing into the barrier channels 4 are diffused at the diffusing end 42 and then divided into two paths, namely the materials respectively enter the two flow dividing channels 43, and because the barrier structures 10 are arranged in each flow dividing channel 43 and the barrier columns 11 are arranged in an annular matrix, the mixed materials are diffused and flow around the barrier columns 11, irregular flows such as secondary flow, backflow or chaotic convection can be formed, the molecular diffusion is enhanced, and the mixing effect of the liquid is accelerated.

Due to the gradual reduction of the inner diameter of the end of the diversion channel 43, the materials further mixed through the barrier channel 4 converge at the end of each diversion channel 43, the convergence position can be seen at B in fig. 1, and then together form a focused fluid at the converging end 41.

In this embodiment, two barrier passages 4 are provided, and the connection relationship is that the diverging end 42 of the second barrier passage 4 is communicated with the converging end 41 of the first barrier passage 4. The number of barrier channels 4 is not limited and depends on the desired mixing effect. After the two barrier channels 4 are arranged, the focusing fluid flowing out of the first barrier channel 4 continuously enters the second barrier channel 4, convergence is carried out at the joint of the converging end 41 and the diverging end 42, the mixing effect of the liquid can be further accelerated after the mixing of the second barrier channel 4, the mixed materials are converged at the joint of the second barrier channel 4 and the third linear channel 9, finally the materials mixed for multiple times are discharged from the material outlet 5, and the material outlet 5 can be connected with a pipeline for product collection.

It should be noted that, as shown in fig. 2, the barrier pillars 11 are generally crescent-shaped, have smooth surfaces and low friction, and the recesses of the barrier pillars 11 are disposed toward the dispersing ends 42, so as to play a role in guiding the liquid and comprehensively reduce the possibility that the nanoparticles are embedded into or retained in the barrier structure 10 when the liquid turns over.

The edges of the joints of the first linear channel 7, the second linear channel 8 and the two branch channels 3 are all in a rounded transition structure, the edges of the joints of the barrier channels 4 and the third linear channel 9 are in a rounded transition structure, and similarly, the outer edge and the inner edge of the whole device can be in the rounded transition structure, so that the possibility of blocking and blocking of nano particles in switching is greatly reduced.

To summarize, the utility model discloses a superposition of the multiple mixed mode that sets up in succession forms the convergence-divergent type flow many times, has shortened the fluid passage, has reduced the mixing time, has reduced the pipeline resistance, has increased the mixed effect for mixing speed.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (8)

1. A microchannel and microfluidic mixing device, characterized in that the device comprises a first material inlet (1), a second material inlet (2), a branch channel (3), a barrier channel (4), a material outlet (5);

the first material inlet (1) is simultaneously communicated with the inlet ends of the two branch passages (3) through a first linear passage (7), the outlet ends of the two branch passages (3) are simultaneously communicated with the second material inlet (2) through a second linear passage (8), the common outlet end of the second material inlet (2) and the branch passages (3) is set to be a three-way opening (6), and the inner diameter of the three-way opening (6) is gradually reduced;

the barrier channel (4) is provided with a gathering end (41) and a diverging end (42), two shunting channels (43) are simultaneously communicated between the gathering end (41) and the diverging end (42), a plurality of barrier structures (10) are arranged in the shunting channels (43), and each barrier structure (10) is composed of a plurality of barrier columns (11) which are arranged in an annular matrix;

the dispersing end (42) is communicated with the three-way port (6), and the gathering end (41) is communicated with the material outlet (5) through a third linear channel (9).

2. Microchannel and microfluidic mixing device according to claim 1, characterized in that the barrier channels (4) are provided with at least two.

3. Microchannel and microfluidic mixing device according to claim 2, characterized in that the inner diameter of the diversion channel (43) at the location where the barrier structure (10) is provided is larger than the inner diameter of the diversion channel (43) at other locations.

4. A microchannel and microfluidic mixing device according to claim 3, wherein the inner diameter of the end of the shunting channel (43) is gradually decreasing.

5. The microchannel and microfluidic mixing device according to claim 2, characterized in that the barrier posts (11) are crescent-shaped overall.

6. The microchannel and microfluidic mixing device according to claim 2, wherein the recesses of the barrier posts (11) are arranged towards the diverging ends (42).

7. The microchannel and microfluidic mixing device according to claim 1, wherein the edges of the junctions of the first linear channel (7), the second linear channel (8) and the two branch channels (3) are all in a rounded transition structure.

8. The microchannel and microfluidic mixing device according to claim 7, wherein the edge of the junction of the barrier channel (4) and the third linear channel (9) is a rounded corner transition structure.

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