阅读说明：本技术 一种基于磁力驱动的粉液搅拌混合装置 (Powder-liquid stirring and mixing device based on magnetic drive ) 是由 程洋 俞建峰 吴炀 罗远洋 黄铭 苑轶 李红昌 于 2021-01-05 设计创作，主要内容包括：一种基于磁力驱动的粉液搅拌混合装置,包括流体混合腔体,流体混合腔体上方具有上方进料流道,流体混合腔体下部具有出料流道,流体混合腔体侧壁上具有切向进料流道,流体混合腔体内具有磁力驱动的扰流组件。本发明在入口处设置了一块钟形分流器,充分利用了混合腔室的空间,增加了流体的混合面积。本发明使用电磁力驱动,不仅能实现磁杆和扰流棒组的转动,而且可以使叶片纵向运动,增大了流体的扰动,进一步促进混合。大大改善流体的上下分层现象,使流体浓度基本均匀。本发明装置巧妙地利用了无刷电机的工作原理,在不使用电机的情况下,实现磁杆的转动效果。减小装置的体积和成本,也避免了由于安装电机所产生的密封等问题。(The utility model provides a powder liquid stirring mixing arrangement based on magnetic drive, includes the fluid mixing cavity, and fluid mixing cavity top has top feeding runner, and fluid mixing cavity lower part has ejection of compact runner, has tangential feeding runner on the fluid mixing cavity lateral wall, has magnetic drive's vortex subassembly in the fluid mixing cavity. According to the invention, the bell-shaped flow divider is arranged at the inlet, so that the space of the mixing chamber is fully utilized, and the mixing area of the fluid is increased. The invention uses electromagnetic force for driving, not only can realize the rotation of the magnetic rod and the spoiler rod group, but also can lead the blade to move longitudinally, increase the disturbance of fluid and further promote the mixing. Greatly improves the upper and lower stratification phenomena of the fluid and ensures that the concentration of the fluid is basically uniform. The device of the invention skillfully utilizes the working principle of the brushless motor, and realizes the rotation effect of the magnetic rod under the condition of not using the motor. The volume and the cost of the device are reduced, and the problems of sealing and the like caused by the installation of the motor are also avoided.)

1. The utility model provides a powder liquid stirring mixing arrangement based on magnetic drive, includes the fluid mixing cavity, its characterized in that, fluid mixing cavity top has top charge-in runner, and fluid mixing cavity lower part has ejection of compact runner, has a plurality of tangential charge-in runners on the fluid mixing cavity lateral wall, has magnetic drive's vortex subassembly in the fluid mixing cavity.

2. The magnetically-driven powder-liquid stirring and mixing device as claimed in claim 1, wherein the upper feeding runner has an upper slide located at the junction of the upper feeding runner and the fluid mixing chamber, the upper slide is disc-shaped, the upper slide has a first annular groove at the middle part, the spoiler assembly has a first annular flange at the upper part, the first annular flange is clamped in the first annular groove, the upper slide has a lower slide composed of radially-distributed slots at the outer edge, and the lower slide connects the upper feeding runner and the fluid mixing chamber; the bottom of the fluid mixing cavity is provided with a second annular groove, the upper part of the turbulence component is provided with a second annular flange, the second annular flange is clamped in the second annular groove, and the turbulence component rotates in the first annular groove and the second annular groove under the drive of magnetic force.

3. The powder-liquid stirring and mixing device based on magnetic drive as claimed in claim 2, wherein the turbulence component comprises a plurality of turbulence bars, the upper and lower ends of the turbulence bars are respectively located on the same circle, the upper and lower ends of the turbulence bars are respectively fixed on two turbulence bar connecting pieces, the upper turbulence bar connecting piece has a first annular flange, the lower turbulence bar connecting piece has a second annular flange, a plurality of blades are arranged on the turbulence bars, and a magnetic rod is fixed between the opposite turbulence bars.

4. The powder-liquid stirring and mixing device based on magnetic drive as claimed in claim 3, wherein the turbulence bars are six, the six turbulence bars are equidistantly fixed on the turbulence bar connecting pieces at the upper and lower parts, the magnetic rods are two groups, each group is three, the two groups of magnetic rods are horizontally fixed at the upper part and the lower part of the turbulence bar respectively, the N poles of the three magnetic rods are adjacently arranged, the three magnetic rods at the upper part are parallel to the three magnetic rods at the lower part in a one-to-one correspondence manner, and the polarity directions of the two parallel magnetic rods are the same.

5. The magnetically-driven powder-liquid stirring and mixing device as claimed in claim 3, wherein the fluid mixing cavity is placed in a vertical variable magnetic field, the blades are magnetic blades, the magnetic blades are strung on the turbulence bar and can slide up and down along the turbulence bar, the turbulence bar is provided with vertical strip-shaped grooves or strip-shaped flanges, and the middle of each blade is provided with a through hole; when the turbulence bar is provided with a vertical strip-shaped groove, the through hole is internally provided with a lug which is clamped in the adjusting groove; when the turbulence bar is provided with the vertical strip-shaped flange, the shape of the through hole is the same as the cross section of the turbulence bar.

6. A magnetically-actuated powder-liquid mixing apparatus according to claim 1, wherein said upper feed flow channel further comprises a bell-shaped flow diverter therein, the outer diameter of the bell-shaped flow diverter being smaller than the inner diameter of the upper feed flow channel.

7. The magnetically-driven powder-liquid stirring and mixing device as claimed in claim 1, wherein the tangential feed flow passage further comprises a filter at the feed inlet.

8. The magnetically-driven powder-liquid stirring and mixing device as claimed in claim 1, wherein the discharge channel further comprises a valve.

9. The powder-liquid stirring and mixing device based on magnetic drive as claimed in any one of claims 1-8, wherein three groups of coils are distributed on the outer wall of the fluid mixing cavity at equal intervals, and the current magnitude and/or direction in the three groups of coils are sequentially and alternately changed to drive the magnetic rod to rotate.

10. The magnetically-driven powder-liquid stirring and mixing device as claimed in any one of claims 1 to 8, wherein the upper feeding flow passage, the tangential feeding flow passage and the discharging flow passage further have temperature sensors and pressure sensors therein.

Technical Field

The invention belongs to the technical field of stirring equipment, and particularly relates to a powder-liquid stirring and mixing device based on magnetic drive.

Background

The powder and liquid are stirred and mixed and are mainly applied to the industries of food, medicine, chemical industry, environmental protection and the like. For example, the specialty coatings industry requires stirred fine coatings for paint production. The coating means to cover the metal and nonmetal surface with a protective layer or a decorative layer. With the development of industrial technology, coating is developed from manual work to industrial automation, and the degree of automation is higher and higher, so that the application of a coating production line is wider and wider, and the coating production line is deeply applied to multiple fields of national economy. The powder-liquid mixing technology is the key for restricting the development of the coating technology. If ceramic particles are used as filler to modify liquid epoxy resin, the content of solid epoxy resin particles can be increased, volatile organic compounds can be reduced, and the corrosion resistance and the wear resistance of the coating material can be improved. The stirring device is inseparable from paint spraying, powder spraying, electrophoresis, electroplating and other coating modes, and the quality of the stirring technology directly influences the coating quality. Stirring and mixing have been widely used in the industry because of their high efficiency and good applicability. However, the existing stirring and mixing device has the following disadvantages, such as:

1. the mixing and stirring device provided in patent publication No. CN111589360A, a mixing and stirring device, has the advantages of single stirring direction, low mixing efficiency and limited mixing effect. The device drives the stirring rod arranged in the stirring barrel to rotate through the motor, so that stirring is realized. The puddler that the motor drove can only transversely move, and the puddler can't the up-and-down motion. Therefore, the fluid can only be transversely mixed, the mixing direction is single, transverse mixing and longitudinal convection cannot be formed simultaneously, the mixing efficiency is reduced, and the mixing effect is influenced. The stirring rod structure stirring area that the device adopted is little, has further restricted mixing efficiency. In addition, the device uses a plurality of conveyer belts, gears and rod pieces, and has the disadvantages of complex structure, poor dynamic balance and high manufacturing difficulty. Meanwhile, the complexity of the transmission mechanism limits the energy utilization rate, so that the device has high energy consumption.

2. The mixing and stirring device provided in patent publication No. CN111821886A, a stirring device for mixed solution, also has the disadvantages of single stirring direction and low mixing efficiency. The device mixes the material as required through adjusting the height position and the inclination of stirring wheel piece in the material that is stirred. The height of the stirring wheel plate is adjusted to form longitudinal convection mixing for the fluid. However, it is difficult to achieve both lateral mixing and longitudinal convection, limiting the mixing efficiency. In addition, the structure of the three electric cylinders also increases the energy consumption of the device.

Disclosure of Invention

[ problem ] to provide a method for producing a semiconductor device

The existing stirring and mixing equipment has the problems of uneven mixing, low mixing speed, low mixing efficiency, high energy consumption and the like.

[ technical solution ] A

In order to solve the above problems, the present invention provides a magnetic-drive-based stirring and mixing device, which includes a fluid mixing cavity, wherein an upper feeding channel is arranged above the fluid mixing cavity, a discharging channel is arranged at the lower part of the fluid mixing cavity, a tangential feeding channel is arranged on the side wall of the fluid mixing cavity, and a magnetic-drive turbulence component is arranged in the fluid mixing cavity.

Furthermore, an upper slideway is also arranged in the upper feeding runner, the upper slideway is positioned at the joint of the upper feeding runner and the fluid mixing cavity, the upper slideway is disc-shaped, a first annular groove is arranged in the middle of the upper slideway, a first annular flange is arranged at the upper part of the turbulence component, the first annular flange is clamped in the first annular groove, a lower slideway composed of radially distributed slotted holes is arranged at the outer edge of the upper slideway, and the lower slideway is communicated with the upper feeding runner and the fluid mixing cavity; the bottom of the fluid mixing cavity is provided with a second annular groove, the upper part of the turbulence component is provided with a second annular flange, the second annular flange is clamped in the second annular groove, and the turbulence component rotates in the first annular groove and the second annular groove under the drive of magnetic force.

Further, the vortex subassembly includes a plurality of vortex sticks, and the upper and lower both ends of vortex stick are located same circle, and the upper and lower both ends of vortex stick are fixed respectively on two vortex stick connecting pieces, and upper portion vortex stick connecting piece has first cyclic annular flange, and lower part vortex stick connecting piece has the cyclic annular flange of second, has a plurality of blades on the vortex stick, is fixed with the magnetic pole between the relative vortex stick.

Further, the vortex stick is six, and six vortex sticks equidistant are fixed on upper and lower part vortex stick connecting piece, and the magnetic pole is two sets of, and every group is three, and two sets of magnetic poles level respectively are fixed in the upper portion and the lower part of vortex stick, and the N utmost point adjacent arrangement of three magnetic poles, and three magnetic poles on upper portion are parallel with three magnetic pole one-to-ones on lower part, and two parallel magnetic pole polarity orientation are the same.

Further, the fluid mixing chamber is placed within a vertically varying magnetic field.

The blades are magnetic blades, the magnetic blades are strung on the turbulence bar and can slide up and down along the turbulence bar, the turbulence bar is provided with vertical strip-shaped grooves or strip-shaped flanges, and the middle parts of the blades are provided with through holes; when the turbulence bar is provided with a vertical strip-shaped groove, the through hole is internally provided with a lug which is clamped in the adjusting groove; when the turbulence bar is provided with the vertical strip-shaped flange, the shape of the through hole is the same as the cross section of the turbulence bar.

Further, a bell-shaped flow divider is arranged in the upper feeding flow channel, and the outer diameter of the bell-shaped flow divider is smaller than the inner diameter of the upper feeding flow channel. The bell-shaped flow divider has the function of dispersing fluid flowing in from the feeding flow channel, so that the fluid uniformly flows into the fluid mixing cavity along the outer wall of the bell-shaped flow divider, the distribution area of the fluid in the mixing cavity is enlarged, the contact area of the two fluids during mixing is increased, and the mixing is more sufficient.

Further, a filter is arranged at the feed inlet of the tangential feed flow channel.

Furthermore, a valve is arranged on the discharge flow channel.

Furthermore, three groups of coils are distributed on the outer wall of the fluid mixing cavity at equal intervals, and the current magnitude and/or direction in the three groups of coils are sequentially and alternately changed to drive the magnetic rod to rotate.

Furthermore, a temperature sensor and a pressure sensor are arranged in the upper feeding runner, the tangential feeding runner and the discharging runner.

Furthermore, the discharge flow channel is designed in a zigzag fluctuation mode, and the mixing uniformity of the fluid is further enhanced.

Compared with the prior art, the invention has the following advantages:

(1) the feeding mode is optimized. The invention is provided with a bell-shaped flow divider at the inlet, when the fluid flows in, the fluid is dispersed under the action of the baffle, and the fluid enters the mixing chamber from the wall surface instead of the original central feeding. The fluid is flattened and dispersed on the side surface of the mixing cavity, so that the space of the mixing cavity is fully utilized, and the mixing area of the fluid is greatly increased. Meanwhile, the other fluid is fed tangentially from the mixing cavity, and the two fluids are directly met and mixed on the inner wall of the mixing cavity, so that the mixing efficiency and the mixing speed are improved.

(2) The driving mode used by the invention is electric power and magnetic force driving, so that the invention is more environment-friendly and cleaner and saves energy. Under the action of magnetic field force, the device not only can realize the rotation of the magnetic rods and the spoiler rod group, but also can enable the blades to move longitudinally, increase the disturbance of fluid and further promote the mixing. Greatly improves the upper and lower stratification phenomena of the fluid and ensures that the concentration of the fluid is basically uniform. The device of the invention skillfully utilizes the working principle of the brushless motor, and realizes the rotation effect of the magnetic rod under the condition of not using the motor. The volume and the cost of the device are reduced, and the problems of sealing and the like caused by the installation of the motor are also avoided.

(3) The tangential feed inlets can be multiple, and multiple fluids can flow into the mixing cavity simultaneously to be mixed. Not only can realize the rapid mixing of multiple fluids in the mixing cavity, avoid the influence of the time difference of raw material introduction on the mixing effect, but also can satisfy the mixing of the fluid with wider flow range.

(4) The invention designs a valve at the outlet, thereby forming a closed mixing cavity structure. The user can control the mixing time according to own needs, and the suitability is strong.

(5) The invention promotes the blades to move up and down through the magnetic field, reduces the area of an isolation area (dead area) when the conventional blades are stirred, and further improves the mixing effect.

(6) The invention adopts a multiple mixing technology, the fluid can be mixed for four times at different parts of the invention, the mixing efficiency is higher, and the mixing effect is better. The fluid can participate in longitudinal mixing and transverse convection simultaneously in the mixing process, and compared with the conventional single transverse convection or single longitudinal convection, the mixing effect is obviously improved.

Drawings

FIG. 1 is a cross-sectional view of a magnetically driven stirring and mixing device according to an embodiment of the present invention;

FIG. 2 is a top view of a magnetically driven mixer apparatus in an embodiment of the present invention with the bell-shaped diverter removed and with the diverter slid up and down;

FIG. 3 is a top view of a spoiler assembly in an embodiment of the present invention;

FIG. 4 is a schematic illustration of a two fluid flow mixing path in an embodiment of the present invention;

FIG. 5 is a graph of the mixing intensity of the fluid at the outlet for different inlet flow rates in an embodiment of the present invention.

In the figure:

1-an upper feed runner; 2-a filter; 3-a tangential feed runner; 4-a fluid mixing chamber; 5-blade; 6-a valve; 7-a discharge runner; 8-a turbulence bar; 9: a blade string rod; 10-upper slideway; 11-a bell-shaped flow divider; 13-a magnetic rod; 14-a spoiler bar connection; 15-stator with coil windings.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.

Example 1

As shown in fig. 1-3, a stirring and mixing device based on magnetic drive includes a fluid mixing cavity 4, an upper feeding channel 1 is provided above the fluid mixing cavity 4, a discharging channel 7 is provided below the fluid mixing cavity 4, a tangential feeding channel 3 is provided on the sidewall of the fluid mixing cavity 4, the tangential feeding channels 3 can be provided in a plurality as required, and a magnetic drive turbulence component is provided in the fluid mixing cavity 4.

The fluid mixing cavity 4 comprises a rubber layer and a metal layer, wherein the inner layer is the metal layer, the rubber layer is the outer layer, and the rubber layer covers the metal layer. The cross section of the fluid mixing cavity 4 is circular, so that the fluid mixing cavity can be conveniently connected with an external flow channel. The tangential feed flow channel 3 also has a filter 2 at the feed inlet. The discharging channel 7 is also provided with an automatically controlled valve 6. The upper feeding runner 1, the tangential feeding runner 3 and the discharging runner 7 are also internally provided with a temperature sensor and a pressure sensor so as to measure the temperature of the current fluid and the pressure of the runners. The discharge flow channel 7 is zigzag and undulated to further enhance the mixing uniformity of the fluid.

The tangential feeding runner 3 is a vertical bent pipe, and the bending angle is 90 degrees. The tangential feeding flow passage 3 is internally provided with a filter 2 for filtering impurities in the feeding fluid and ensuring the smoothness of the flow passage. One feeding mode of the invention is tangential feeding, and the fluid entering tangentially falls spirally along the inner wall of the fluid mixing cavity 4 and is fully mixed with another fluid dispersed near the wall surface.

The upper feeding runner 1 is internally provided with a bell-shaped flow divider 11 and an upper runner 10, the upper runner 10 is positioned at the joint of the upper feeding runner 1 and the fluid mixing cavity 4, the upper runner 10 is disc-shaped, the middle part of the upper runner 10 is provided with a first annular groove, the outer edge of the upper runner 10 is provided with a lower runner consisting of slotted holes distributed in a radial manner, and the lower runner is communicated with the upper feeding runner 1 and the fluid mixing cavity 4; the bottom of the fluid mixing chamber 4 has a second annular groove.

The outer diameter of the bell-shaped flow divider 11 is smaller than the inner diameter of the upper feed flow channel 1. The bell-shaped splitter 11 serves to distribute the incoming fluid from the feed channel. The bell-shaped flow divider 11 is placed in the upper feed channel 1 with a longitudinal height of 65% of the upper feed channel 1 and is connected at the bottom to the upper run 10. The bell diverter 11 is of a shell design and is hollow inside to reduce the weight of the device and to relieve pressure on the upper run 10. The fluid flowing into the upper feed channel 1 is distributed uniformly along the outer wall of the bell-shaped flow divider 11 in the area of the inner wall of the fluid mixing chamber 4 after flowing through the flow divider. Greatly increasing the distribution area of the fluid, further enlarging the mixing contact area and improving the mixing efficiency.

The vortex subassembly includes six vortex rods 8, and the upper and lower both ends of vortex rod 8 are located same circle, and the upper and lower both ends of vortex rod 8 are fixed respectively on two vortex rod connecting pieces 14, and upper portion vortex rod connecting piece 14 has first cyclic annular flange, and lower part vortex rod connecting piece 14 has the cyclic annular flange of second, has a plurality of blades 5 on the vortex rod 8, is fixed with magnetic pole 13 between the relative vortex rod 8. The magnetic rods 13 are two groups, each group is three, the two groups of magnetic rods 13 are horizontally fixed on the upper portion and the lower portion of the turbulence bar 8 respectively, the N poles of the three magnetic rods 13 are arranged adjacently, the three magnetic rods 13 on the upper portion are parallel to the three magnetic rods 13 on the lower portion in a one-to-one correspondence mode, and the polarity directions of the two parallel magnetic rods 13 are the same. First annular flange card is in first annular groove, and the annular flange card of second is in the annular groove of second, and the vortex subassembly rotates in first annular groove and the annular groove of second under the magnetic drive.

Three groups of stators 15 with coil windings are distributed on the outer wall of the fluid mixing cavity 4 at equal intervals, the current magnitude and/or direction in the coils are sequentially and alternately changed to form a magnetic field which periodically changes along the annular direction to drive the magnetic rod 13 to rotate, and the whole turbulence component is driven to rotate.

In order to mix the fluid more fully, the height difference between the tangential feed channel 3 and the outlet channel 7 should be as large as possible. The tangential inlet channels 3 should be designed in the upper part of the fluid mixing chamber 4 and the outlet channels 7 in the lower part of the fluid mixing chamber 4. In order to ensure a longer mixing distance and obtain a better mixing effect, the discharging flow channel 7 and the tangential feeding flow channel 3 are symmetrically distributed on two sides of the axial line.

The working principle is as follows:

if one kind of powder and a plurality of kinds of liquids are mixed, a suction type conveying device may be connected to the discharge passage 7 to suck the powder into the mixing chamber first. At this time, the filter 2 filters out powder having an excessively large particle size, and screens the powder. After all the powder is fed, firstly closing the valve 6 on the discharging flow channel 7, opening the feeding valves 6 on the feeding flow channel 1 and the tangential feeding flow channel 3, and allowing the fluid flowing into the feeding flow channel 1 to flow to the fluid mixing cavity 4 along the inner wall of the feeding flow channel 1 after passing through the bell-shaped flow divider 11; the fluid flowing in from the tangential feeding flow channel 3 directly flows into the fluid mixing cavity 4, and the fluid spirally descends in the fluid mixing cavity 4 by controlling the feeding flow rate. During which a first mixing of the fluids takes place near the inner wall of the fluid mixing chamber 4. At the moment, the liquid level in the fluid mixing cavity 4 continuously rises, and the turbulence component in the fluid mixing cavity 4 makes circular motion along the upper slideway and the lower slideway under the action of the transverse rotating magnetic field, so that a plurality of fluids entering the fluid mixing cavity 4 are mixed for the second time, and the mixing is main mixing; simultaneously, when the blades 5 rotate along with the turbulence bars 8, the local fluid is subjected to third mixing, and the influence range of the second mixing is smaller and the second mixing is performed together. Because the discharging flow passage 7 adopts the design of zigzag and undulated appearance, the fluids can be mixed again when flowing through the discharging flow passage 7. After various fluids and powder are fully mixed in the fluid mixing cavity 4, the valve 6 on the discharging flow channel 7 is opened, the fluids after three times of mixing flow out after being mixed for the fourth time in the discharging flow channel 7, the mixing efficiency is greatly improved, and a better mixing effect is obtained. If only one kind of powder and one kind of liquid are mixed, after the powder is completely fed, another kind of fluid flows in from the tangential feeding runner 3 to be mixed.

The mixing process is illustrated with the solid and dashed lines representing the two fluids entering the device of the present invention. The two fluids respectively flow into the upper feeding flow channel 1 and the tangential feeding flow channel 3, are mixed along the direction indicated by an arrow, and the mixed fluid finally flows out of the discharging flow channel 7. The dotted areas in the figure represent the areas where the fluid in the mixing chamber can enter.

Example 2

This embodiment differs from embodiment 1 in that the fluid mixing chamber 4 is placed in a magnetic field in the vertical direction and the magnetic field varies with a period, such as a sinusoidal period. The blades 5 are magnetic blades 5, the magnetic blades 5 are strung on the turbulence bar 8 and can slide up and down along the turbulence bar 8, vertical strip-shaped grooves or strip-shaped flanges are formed in the turbulence bar 8, and through holes are formed in the middle of the blades 5; when the turbulence bar 8 is provided with a vertical strip-shaped groove, a lug is arranged in the through hole and is clamped in the adjusting groove; when the turbulence bar 8 is provided with a vertical strip-shaped flange, the shape of the through hole is the same as the cross section of the turbulence bar 8. The blades 5 slide up and down along the sliding grooves on the tandem bars of the blades 5 under the action of impact force, buoyancy force, self gravity and magnetic force of an external magnetic field of fluid, so that longitudinal mixing convection disturbance of local fluid where the blades 5 are located is greatly increased, and mixing uniformity is improved.

Example 3

To explore the hybrid effect of the device of the present invention, the entire model was simulated using COMSOL Multiphysics 5.4 software. The rotation speed of the magnetic rod and the spoiler rod group is set to be 200RPM, and the magnetic field intensity used is 0.145T.

And selecting a concentration value of a diagonal line of the section of the outlet as a data set, and representing the mixing intensity by using the mixing uniformity and the mixing time. The mixing uniformity can better describe the mixing effect of the fluid in the mixing cavity and can be obtained by calculating the formula (1).

In the formula: s_c-mixing uniformity; n is the total number of sampling points; c. C_i-using normalized concentrations at node i;-expected value of normalized concentration of sampling nodes, taken as 0.5.

The mixing time can describe the speed of mixing and can be calculated by equation (2).

In the formula: t-mixing time; v_mix-mixing channel total volume; q-total flow of fluid.

The mixing uniformity, mixing time and inlet flow rate are plotted in table 1:

TABLE 1 relationship between mixing uniformity and mixing time, inlet flow rate

Inlet flow rate/(m/s)	Total flow/(m)3/s)	Intensity of mixing	Mixing time/s
				0.03	0.0058	0.9966	996.740
0.05	0.0098	0.9954	588.077
				0.10	0.0196	0.9889	299.022
0.20	0.0393	0.9809	149.511
				0.30	0.0589	0.9831	99.674
0.50	0.0981	0.9828	59.804
				1.00	0.1963	0.9767	29.902
2.00	0.3925	0.9725	14.951
				5.00	0.9813	0.9716	5.980
10.00	1.9625	0.9709	2.990

As shown in fig. 5, the mixing intensity decreases and then levels off as the inlet flow rate increases, meaning that there is a transition from diffusion dominated to convection dominated mixing. As can be seen from Table 1, the device achieves ideal mixing effect under the condition of different inlet flow rates, and the mixing intensity is greater than 95%.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.