CN113731210A - Mixer, mixing device and design method - Google Patents
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- CN113731210A CN113731210A CN202111121155.7A CN202111121155A CN113731210A CN 113731210 A CN113731210 A CN 113731210A CN 202111121155 A CN202111121155 A CN 202111121155A CN 113731210 A CN113731210 A CN 113731210A
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- 238000013461 design Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 145
- 239000012530 fluid Substances 0.000 claims abstract description 44
- 230000000694 effects Effects 0.000 abstract description 16
- 238000003756 stirring Methods 0.000 abstract description 7
- 238000005507 spraying Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The embodiment of the invention provides a mixer, a mixing device and a design method, and relates to the field of fluid mixing. The mixer is provided with a mixing cavity, a first liquid inlet and a second liquid inlet, the mixing cavity is columnar, the first liquid inlet is obliquely arranged along the axis direction of the mixing cavity, so that fluid entering the mixing cavity through the first liquid inlet generates rotational flow, rotational flow stirring can be carried out in the mixing cavity, the first liquid inlet is communicated with the mixing cavity, the second liquid inlet is vertically arranged along the axial direction of the mixing cavity, one part of fluid entering the mixing cavity through the second liquid inlet carries out linear motion, the other part of fluid entering the mixing cavity through the second liquid inlet generates stirring under the rotational flow effect of the fluid entering the mixing cavity through the first liquid inlet, and the second liquid inlet is communicated with the mixing cavity. When the mixer is used, the fluid entering the mixing cavity from the first liquid inlet and the second liquid inlet can be completely mixed, no dead zone exists in the mixing cavity, and the mixing effect of the fluid is improved.
Description
Technical Field
The invention relates to the field of fluid mixing, in particular to a mixer, a mixing device and a design method.
Background
Along with the development of the spraying industry, the multi-component spraying in various industries is widely applied, saves energy and is convenient to use. The important technology of the multi-component spraying as the industrial surface treatment is more and more paid attention by people, wherein the multi-component mixing technology is also developed increasingly to meet the mixing adaptability of the paint with higher proportion and higher viscosity in the future market, and a large amount of test and verification work exists for different paints.
The existing hybrid design has the problem of poor hybrid effect because a few reserved spaces, namely dead zones are large and the correlation with the hybrid effect is weak.
Disclosure of Invention
The invention provides a mixer, a mixing device and a design method, which can solve the problem of poor mixing effect of the existing mixing design.
Embodiments of the invention may be implemented as follows:
an embodiment of the present invention provides a mixer, including:
the mixer is provided with a mixing cavity, a first liquid inlet and a second liquid inlet, and the mixing cavity is columnar;
the first liquid inlet and the mixing cavity are obliquely arranged in the axial direction, and the first liquid inlet is communicated with the mixing cavity;
the second liquid inlet is perpendicular to the axis direction of the mixing cavity, and the second liquid inlet is communicated with the mixing cavity.
Optionally, the mixing chamber includes first mixing chamber and second mixing chamber, first inlet with the second inlet all with first mixing chamber intercommunication, the second mixing chamber is the column.
Optionally, the mixer is further provided with a liquid outlet, and the liquid outlet is communicated with the second mixing cavity.
Optionally, the blender still is equipped with the connection chamber, the connection chamber is the column, the one end in connection chamber with first hybrid chamber intercommunication, the other end in connection chamber with second hybrid chamber intercommunication.
Optionally, the diameter of the connecting chamber is smaller than the diameter of the first mixing chamber and the diameter of the second mixing chamber.
The embodiment of the invention also provides a mixing device, which comprises a first liquid inlet pipe, a second liquid inlet pipe and the mixer;
the first liquid inlet pipe is communicated with the first liquid inlet, and the second liquid inlet pipe is communicated with the second liquid inlet.
Optionally, a first switch valve is arranged on the first liquid inlet pipe, and a second switch valve is arranged on the second liquid inlet pipe.
The embodiment also provides a design method for designing the above mixer, where the mixer is provided with a mixing cavity, and the mixing cavity includes a first mixing cavity and a second mixing cavity, and the design method includes:
acquiring a first Reynolds number of the first liquid inlet;
acquiring a second Reynolds number of the second liquid inlet;
obtaining the proportioning period of the first liquid inlet and the second liquid inlet;
and calculating the relation among the diameter of the first mixing cavity, the diameter of the first liquid inlet and the diameter of the second liquid inlet according to the first Reynolds number, the second Reynolds number and the proportioning period.
Optionally, the reynolds number is calculated by the following formula:
Re＝V*D*ρ/μ；
wherein V is the inlet flow velocity of the liquid inlet; d is the diameter of the liquid inlet; ρ is the density of the fluid; μ is the viscosity of the fluid; re is Reynolds number.
Optionally, the calculation formula of the proportioning period is as follows:
MH*pi*MD1^2/4＝VA1*pi*DA1^2/4*T1+VB2*pi*DB2^2/4*T2；
wherein MH is the height of the first mixing chamber; MD1 is the diameter of the first mixing chamber; VA1 is the inlet flow rate of the first liquid inlet; DA1 is the diameter of the first liquid inlet; VB2 is the inlet flow rate of the second liquid inlet; DB2 is the diameter of the second loading port; pi is the circumference ratio; t1 is the period proportioning time of the first liquid inlet; t2 is the period proportioning time of the second liquid inlet.
The mixer, the mixing device and the design method of the embodiment of the invention have the beneficial effects of, for example:
the mixer is provided with a mixing cavity, a first liquid inlet and a second liquid inlet, the mixing cavity is columnar, the first liquid inlet is obliquely arranged along the axis direction of the mixing cavity, so that fluid entering the mixing cavity through the first liquid inlet generates rotational flow, rotational flow stirring can be carried out in the mixing cavity, the first liquid inlet is communicated with the mixing cavity, the second liquid inlet is vertically arranged along the axial direction of the mixing cavity, one part of fluid entering the mixing cavity through the second liquid inlet carries out linear motion, the other part of fluid entering the mixing cavity through the second liquid inlet generates stirring under the rotational flow effect of the fluid entering the mixing cavity through the first liquid inlet, and the second liquid inlet is communicated with the mixing cavity. When the mixer is used, the fluid entering the mixing cavity from the first liquid inlet and the second liquid inlet can be completely mixed, no dead zone exists in the mixing cavity, and the mixing effect of the fluid is improved.
This mixing arrangement includes blender, first feed liquor pipe and second feed liquor pipe, and first feed liquor pipe and first inlet intercommunication, second feed liquor pipe and second inlet intercommunication adopt the mixing arrangement of this blender to make the fluid that gets into the mixing chamber from first inlet and second inlet can mix completely, and do not have the blind spot in the mixing chamber, have improved fluidic mixed effect.
The design method is used for designing the mixer, and the relation among the diameter of the first mixing cavity, the diameter of the first liquid inlet and the diameter of the second liquid inlet is calculated according to the first Reynolds number, the second Reynolds number and the proportioning period by obtaining the first Reynolds number of the first liquid inlet, the second Reynolds number of the second liquid inlet and the proportioning period of the first liquid inlet, so that the fluids entering the mixing cavity from the first liquid inlet and the second liquid inlet can be completely mixed, and the mixing effect is good.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a first view angle of a mixer provided in this embodiment;
fig. 2 is a schematic structural diagram of a second view angle of the mixer provided in this embodiment;
fig. 3 is a schematic diagram illustrating mixing and stirring of the mixer provided in this embodiment under a first ideal condition;
fig. 4 is a schematic diagram of mixing and stirring of the mixer provided in this embodiment under a second ideal state.
Icon: 10-a mixing chamber; 11-a first mixing chamber; 12-a second mixing chamber; 20-a first liquid inlet; 30-a second liquid inlet; 40-a connecting cavity; 50-a liquid outlet; 100-mixer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Along with the development of the spraying industry, the multi-component spraying in various industries is widely applied, saves energy and is convenient to use. The important technology of the multi-component spraying as the industrial surface treatment is more and more paid attention by people, wherein the multi-component mixing technology is also developed increasingly to meet the mixing adaptability of the paint with higher proportion and higher viscosity in the future market, and a large amount of test and verification work exists for different paints.
The existing hybrid design has the problem of poor hybrid effect because a few reserved spaces, namely dead zones are large and the correlation with the hybrid effect is weak.
Referring to fig. 1-4, the present embodiment provides a mixer 100, a mixing apparatus (not shown), and a design method thereof, where the mixing apparatus includes a first liquid inlet pipe (not shown), a second liquid inlet pipe (not shown), and the mixer 100, and both the first liquid inlet pipe and the second liquid inlet pipe are communicated with the mixer 100, and the mixer 100 can effectively improve the above-mentioned technical problems, and can solve the problem of poor mixing effect of the existing mixing design.
Referring to fig. 1 and 2, the mixer 100 has a mixing chamber 10, a first liquid inlet 20 and a second liquid inlet 30, the mixing chamber 10 is cylindrical, the first liquid inlet 20 is inclined to the axial direction of the mixing chamber 10, the first liquid inlet 20 is communicated with the mixing chamber 10, the second liquid inlet 30 is perpendicular to the axial direction of the mixing chamber 10, and the second liquid inlet 30 is communicated with the mixing chamber 10.
Specifically, the inclination angle between the first loading port 20 and the axial direction of the mixing chamber 10 may be 5 degrees, 15 degrees or more.
The internal diameters of the first loading port 20 and the second loading port 30 may each be 1mm, 1.5mm, 2mm, 2.5mm, 3mm or 4 mm.
In other embodiments, the number of the first loading ports 20 may be two, and the number of the second loading ports 30 may also be two.
In this embodiment, the mixing chamber 10 includes a first mixing chamber 11 and a second mixing chamber 12, the first liquid inlet 20 and the second liquid inlet 30 are both communicated with the first mixing chamber 11, the second mixing chamber 12 is communicated with the first mixing chamber 11, and after the mixed fluid in the first mixing chamber 11 enters the second mixing chamber 12, mixing and stirring are continued to be performed, so that the fluid can be fully mixed and stirred.
In particular, the second mixing chamber 12 is cylindrical.
Besides, the mixer 100 is further provided with a liquid outlet 50, the liquid outlet 50 is communicated with the second mixing chamber 12, specifically, the liquid outlet 50 is communicated with one end of the second mixing chamber 12 far away from the first mixing chamber 11, and the fluid mixed and stirred in the second mixing chamber 12 flows out through the liquid outlet 50.
The mixer 100 is further provided with a connecting chamber 40, one end of the connecting chamber 40 is communicated with the first mixing chamber 11, and the other end of the connecting chamber 40 is communicated with the second mixing chamber 12.
In this embodiment, the connection chamber 40 has a cylindrical shape.
In other embodiments, the connecting chamber 40 may not be provided, and the second mixing chamber 12 directly communicates with the first mixing chamber 11, thereby enlarging the volume of the second mixing chamber 12.
The diameter of the connecting chamber 40 is smaller than the diameter of the first mixing chamber 11 and the diameter of the second mixing chamber 12.
Because the diameter of the connecting cavity 40 is smaller than the diameter of the first mixing cavity 11 and the diameter of the second mixing cavity 12, the flowing speed of the fluid which is mixed and stirred in the first mixing cavity 11 after entering the second mixing cavity 12 through the connecting cavity 40 is reduced, so that the fluid can be fully mixed and stirred for more time.
Since the diameter of the connecting cavity 40 is smaller than the diameter of the first mixing cavity 11 and the diameter of the second mixing cavity 12, the end of the first mixing cavity 11 close to the connecting cavity 40 and the end of the second mixing cavity 12 close to the connecting cavity 40 are both provided with chamfers.
It should also be explained that the first inlet conduit of the mixing device communicates with the first inlet 20 and that the second inlet conduit communicates with the second inlet 30.
In this embodiment, a first switch valve (not shown) is disposed on the first liquid inlet pipe, the first switch valve is used for opening and closing the first liquid inlet pipe, a second switch valve (not shown) is disposed on the second liquid inlet pipe, and the second switch valve is used for opening and closing the second liquid inlet pipe.
It should be noted that the second liquid inlet pipe is closed when the first liquid inlet pipe is opened, and the first liquid inlet pipe is closed when the second liquid inlet pipe is opened.
FIGS. 3 and 4 show the distribution of the fluid entering the first mixing chamber 11 via the first loading port 20 and the second loading port 30 in an ideal situation, as will be explained in more detail below.
In FIG. 3, the fluid entering the first mixing chamber 11 via the first loading port 20 is shown as A in FIG. 3, and the fluid entering the first mixing chamber 11 via the second loading port 30 is shown as B in FIG. 3, and the fluid B is mixed and stirred with the fluid A at the center of the first mixing chamber 11.
In FIG. 4, the fluid entering the first mixing chamber 11 via the first loading port 20 is shown as A in FIG. 3, the fluid entering the first mixing chamber 11 via the second loading port 30 is shown as B in FIG. 3, and the fluid B moves linearly from the second loading port 30 to the side wall of the first mixing chamber 11 far away from the second loading port 30 and is mixed and stirred with the fluid A.
The design method is used for designing the mixer 100, and the design method comprises the following steps:
s1: acquiring a first Reynolds number of the first liquid inlet 20;
s2: obtaining a second Reynolds number for the second loading port 30;
specifically, the formula for calculating the Reynolds number is:
Re＝V*D*ρ/μ；
wherein V is the inlet flow velocity of the liquid inlet; d is the diameter of the liquid inlet; ρ is the density of the fluid; μ is the viscosity of the fluid; re is Reynolds number.
S3: obtaining the proportioning period of the first liquid inlet 20 and the second liquid inlet 30;
specifically, the calculation formula of the proportioning period is as follows:
MH*pi*MD1^2/4＝VA1*pi*DA1^2/4*T1+VB2*pi*DB2^2/4*T2；
where MH is the height of the first mixing chamber 11; MD1 is the diameter of the first mixing chamber 11; VA1 is the inlet flow rate of the first loading port 20; DA1 is the diameter of the first loading port 20; VB2 is the inlet flow rate of the second loading port 30; DB2 is the diameter of the second loading port 30; pi is the circumference ratio; t1 is the period proportioning time of the first liquid inlet 20; t2 is the period proportioning time of the second liquid inlet 30.
S4: the relationship between the diameter of the first mixing chamber 11, the diameter of the first loading port 20 and the diameter of the second loading port 30 is calculated from the first Reynolds number, the second Reynolds number and the proportioning period.
In summary, the embodiment of the present invention provides a mixer 100 and a design method thereof, the mixer 100 is provided with a mixing chamber 10, a first liquid inlet 20 and a second liquid inlet 30, the mixing chamber 10 is cylindrical, the first liquid inlet 20 is disposed in an inclined manner with respect to an axial direction of the mixing chamber 10, so that a fluid entering the mixing chamber 10 through the first liquid inlet 20 generates a rotational flow, the rotational flow can be stirred in the mixing chamber 10, the first liquid inlet 20 is communicated with the mixing chamber 10, the second liquid inlet 30 is disposed in a perpendicular manner with respect to the axial direction of the mixing chamber 10, a part of the fluid entering the mixing chamber 10 through the second liquid inlet 30 performs a linear motion, another part of the fluid entering the mixing chamber 10 through the second liquid inlet 30 is stirred under the rotational flow effect of the fluid entering the mixing chamber 10 through the first liquid inlet 20, and the second liquid inlet 30 is communicated with the mixing chamber 10. When the mixer 100 is used, the fluids entering the mixing chamber 10 from the first liquid inlet 20 and the second liquid inlet 30 can be completely mixed, and no dead zone exists in the mixing chamber 10, so that the mixing effect of the fluids is improved.
This mixing arrangement includes blender 100, first feed liquor pipe and second feed liquor pipe, and first feed liquor pipe and first inlet 20 intercommunication, second feed liquor pipe and second inlet 30 intercommunication adopt this blender 100's mixing arrangement to make and to get into the fluid of mixing chamber 10 from first inlet 20 and second inlet 30 and can mix completely, and do not have the blind spot in the mixing chamber 10, improved fluidic mixed effect.
The design method is used for designing the mixer 100, and by obtaining the first reynolds number of the first liquid inlet 20, the second reynolds number of the second liquid inlet 30 and the proportioning period of the first liquid inlet 20 and the second liquid inlet 30, and calculating the relationship among the diameter of the first mixing cavity 11, the diameter of the first liquid inlet 20 and the diameter of the second liquid inlet 30 according to the first reynolds number, the second reynolds number and the proportioning period, it is ensured that the fluids entering the mixing cavity 10 from the first liquid inlet 20 and the second liquid inlet 30 can be completely mixed, and a good mixing effect is ensured.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A mixer, comprising:
the mixer (100) is provided with a mixing cavity (10), a first liquid inlet (20) and a second liquid inlet (30), and the mixing cavity (10) is columnar;
the first liquid inlet (20) and the mixing cavity (10) are arranged in an inclined manner in the axial direction, and the first liquid inlet (20) is communicated with the mixing cavity (10);
the second liquid inlet (30) is perpendicular to the axis direction of the mixing cavity (10), and the second liquid inlet (30) is communicated with the mixing cavity (10).
2. The mixer according to claim 1, wherein the mixing chamber (10) comprises a first mixing chamber (11) and a second mixing chamber (12), the first liquid inlet (20) and the second liquid inlet (30) both communicating with the first mixing chamber (11), the second mixing chamber (12) being cylindrical.
3. A mixer according to claim 2, wherein the mixer (100) is further provided with a liquid outlet (50), the liquid outlet (50) communicating with the second mixing chamber (12).
4. The mixer according to claim 2, wherein the mixer (100) is further provided with a connecting chamber (40), the connecting chamber (40) is cylindrical, one end of the connecting chamber (40) is communicated with the first mixing chamber (11), and the other end of the connecting chamber (40) is communicated with the second mixing chamber (12).
5. A mixer according to claim 4, wherein the diameter of the connecting chamber (40) is smaller than the diameter of the first mixing chamber (11) and the diameter of the second mixing chamber (12).
6. A mixing apparatus, characterized by comprising a first liquid inlet pipe, a second liquid inlet pipe and a mixer (100) according to any one of claims 1-5;
the first liquid inlet pipe is communicated with the first liquid inlet (20), and the second liquid inlet pipe is communicated with the second liquid inlet (30).
7. The mixing device of claim 6, wherein the first liquid inlet pipe is provided with a first switch valve, and the second liquid inlet pipe is provided with a second switch valve.
8. A design method for designing a mixer (100) according to any one of claims 1-5, the mixer (100) being provided with a mixing chamber (10), the mixing chamber (10) comprising a first mixing chamber (11) and a second mixing chamber (12), the design method comprising:
obtaining a first Reynolds number of the first liquid inlet (20);
obtaining a second Reynolds number of the second liquid inlet (30);
obtaining the proportioning period of the first liquid inlet (20) and the second liquid inlet (30);
and calculating the relation among the diameter of the first mixing cavity (11), the diameter of the first liquid inlet (20) and the diameter of the second liquid inlet (30) according to the first Reynolds number, the second Reynolds number and the proportioning period.
9. The design method according to claim 8, wherein the reynolds number is calculated by the formula:
Re＝V*D*ρ/μ；
wherein V is the inlet flow velocity of the liquid inlet; d is the diameter of the liquid inlet; ρ is the density of the fluid; μ is the viscosity of the fluid; re is Reynolds number.
10. The design method of claim 8, wherein the calculation formula of the proportioning period is as follows:
MH*pi*MD1^2/4＝VA1*pi*DA1^2/4*T1+VB2*pi*DB2^2/4*T2；
wherein MH is the height of the first mixing chamber (11); MD1 is the diameter of the first mixing chamber (11); VA1 is the inlet flow rate of the first liquid inlet (20); DA1 is the diameter of the first liquid inlet (20); VB2 is the inlet flow rate of the second liquid inlet (30); DB2 is the diameter of the second loading port (30); pi is the circumference ratio; t1 is the period proportioning time of the first liquid inlet (20); t2 is the period proportioning time of the second liquid inlet (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111121155.7A CN113731210A (en) | 2021-09-24 | 2021-09-24 | Mixer, mixing device and design method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111121155.7A CN113731210A (en) | 2021-09-24 | 2021-09-24 | Mixer, mixing device and design method |
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| CN113731210A true CN113731210A (en) | 2021-12-03 |
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| CN212696548U (en) * | 2020-04-02 | 2021-03-16 | 南昌春旋农机有限责任公司 | Multipurpose agricultural machinery equipment |
| CN112861306A (en) * | 2020-12-23 | 2021-05-28 | 重庆大学 | Hot water type air source heat pump water tank matching and use mode optimization design method |
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2021
- 2021-09-24 CN CN202111121155.7A patent/CN113731210A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200171447A1 (en) * | 2010-05-20 | 2020-06-04 | Suncor Energy Inc. | Method and Device for In-Line Injection of Flocculent Agent into a Fluid Flow of Mature Fine Tailings |
| DE102010023793A1 (en) * | 2010-06-15 | 2011-12-15 | J. F. Knauer Industrie-Elektronik Gmbh | Apparatus and method for mixing conditioning agent, in particular flocculant, in sludge |
| JP2016049694A (en) * | 2014-08-29 | 2016-04-11 | 岡三機工株式会社 | Mortar mixer |
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