CN117772369A - A kind of air grinder nozzle - Google Patents
A kind of air grinder nozzle Download PDFInfo
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- CN117772369A CN117772369A CN202311807175.9A CN202311807175A CN117772369A CN 117772369 A CN117772369 A CN 117772369A CN 202311807175 A CN202311807175 A CN 202311807175A CN 117772369 A CN117772369 A CN 117772369A
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Abstract
本发明提供一种气磨机喷嘴，包括：本体；本体具有相背的进气端面和出气端面，在本体内部设置有流通通道，流通通道包括轴线重合并依次连接的进气段、收缩段、扩张段和出气段，进气段在进气端面形成进气口，出气段在出气端面形成出气口；进气段和出气段的形状均为圆柱形，收缩段和扩张段的形状均为圆台形，收缩段的大圆端直径与进气段的直径相等并通过该大圆端与进气段连接，扩张段的小圆端直径与收缩段的小圆端直径相等，并且扩张段的小圆端连接在收缩段的小圆端上，出气段的直径与扩张段的大圆端直径相等，并连接在扩张段的大圆端。其能够对气体进行加速，使气体能够以较高的流速喷出，进而使粉碎效果得到保证。
The invention provides an air mill nozzle, which includes: a body; the body has opposite air inlet end faces and air outlet end faces; a circulation channel is provided inside the body; the circulation channel includes an air inlet section, a contraction section, and an air inlet section whose axes are coincident and connected in sequence. The expansion section and the air outlet section, the air inlet section forms an air inlet on the air inlet end face, and the air outlet section forms an air outlet on the air outlet end face; the shapes of the air inlet section and the air outlet section are both cylindrical, and the shapes of the contraction section and the expansion section are round. Cone shape, the diameter of the large round end of the contraction section is equal to the diameter of the air inlet section and is connected to the air inlet section through the large round end, the diameter of the small round end of the expansion section is equal to the diameter of the small round end of the contraction section, and the small round end of the expansion section is Connected to the small round end of the contraction section, the diameter of the air outlet section is equal to the diameter of the large round end of the expansion section, and connected to the large round end of the expansion section. It can accelerate the gas so that the gas can be ejected at a higher flow rate, thereby ensuring the crushing effect.
Description
Technical Field
The invention relates to the technical field of air flow grinding, in particular to an air flow grinding nozzle.
Background
The jet mill is a crushing device for processing coarse particle materials into fine particle powder by utilizing high-speed air flow, and has wide application in the industries of medicine, biochemistry, ceramics, lithium battery and the like. The working principle of the jet mill is as follows: compressed gas flows through a nozzle of the air mill and then is injected into a crushing area of the air mill to enable materials to be in a fluidized state, accelerated particles flow along with the air flow, repeatedly collide, rub and shear at an air flow junction of the nozzle to crush the materials, the crushed materials flow to a classification area along with the air flow, flow to a classification wheel under the action of negative pressure and are classified, fine particles meeting the granularity requirement enter a cyclone separator along with the air flow to carry out gas-solid separation and are trapped, and coarse particle materials not meeting the granularity requirement return to the crushing area under the action of self gravity to continue to participate in crushing. The air flow channels of the existing air mill nozzles are all cylindrical, the structure can not accelerate the air entering the air mill nozzles, the phenomenon that the flow velocity of the air sprayed out of the air mill nozzles is low easily occurs, and then the crushing effect is affected.
Disclosure of Invention
The invention aims to provide a gas mill nozzle which can accelerate gas, so that the gas can be sprayed out at a high flow rate, and further, the crushing effect is ensured.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a gas mill nozzle comprising: a body;
the body is provided with an air inlet end face and an air outlet end face which are opposite, a circulation channel is arranged in the body, the circulation channel comprises an air inlet section, a contraction section, an expansion section and an air outlet section, the air inlet section forms an air inlet on the air inlet end face, and the air outlet section forms an air outlet on the air outlet end face, so that air can enter the circulation channel from the air inlet and be discharged through the air outlet;
the shape of the air inlet section and the shape of the air outlet section are cylindrical, the shapes of the contraction section and the expansion section are round tables, the diameter of the big round end of the contraction section is equal to that of the air inlet section and is connected with the air inlet section through the big round end, the diameter of the small round end of the expansion section is equal to that of the small round end of the contraction section, the small round end of the expansion section is connected to the small round end of the contraction section, and the diameter of the air outlet section is equal to that of the big round end of the expansion section and is connected to the big round end of the expansion section.
Preferably, the taper angle of the constriction section is alpha, and alpha is 30 degrees less than or equal to 70 degrees;
and/or the taper angle of the expansion section is beta, and beta is 20 degrees less than or equal to 60 degrees.
Preferably, the number of the circulation channels is more than one;
the diameter of the small round end of the contraction section is d cr And (2) and
wherein P is 0 For the gas pressure entering the flow channel from the gas inlet, Q is the gas flow, n is the number of flow channels, a is the atmospheric pressure, b is the correction coefficient, and 1.3.ltoreq.b.ltoreq.1.6.
Preferably, an external gas source is connectable to the gas inlet for inputting gas into the flow passage;
P 1 ＝P 0 +0.05, where P 1 Is the external air source pressure.
Preferably, when P 0 When the pressure is less than 1.2MPa, b is more than or equal to 1.3 and less than or equal to 1.45, and when P 0 When the pressure is more than 1.2MPa, b is more than or equal to 1.45 and less than or equal to 1.6.
Preferably, the diameter of the air outlet section is d out And (2) and
wherein M is Mach number corresponding to the airflow velocity of the gas discharged from the gas outlet, k is the adiabatic index of the gas flowing through the flow channel, c is an index factor, and e is a correction value.
Preferably, P 0 ＝1.8788×M 2 -6.5972M+6.3364。
Preferably, guide strips are arranged on the inner wall of the air outlet section, the guide strips extend along a curve from a position close to the expansion section to a position close to the air outlet, the number of the guide strips is at least two, and the at least two guide strips are uniformly distributed along the circumferential direction of the air outlet section;
two points A and B are selected on the extension curve of the guide strip, and the two points A and B are respectively selected along the air outlet sectionA distance between A and B in the axial direction of 1 mm, a straight line passing through A and tangential to the extending curve of the flow guide strip is L 1 A straight line passing through B and tangent to the extension curve of the guide strip is L 2 ,L 1 And L 2 An included angle theta is formed, and theta is more than or equal to 5 degrees and less than or equal to 15 degrees.
Preferably, the height of the guide strip in the radial direction along the inlet section is 0.1 to 0.5 mm.
Preferably, the diameter of the air inlet section is d in And 1.5×d cr ＜d in ＜4×d cr 。
According to the air mill nozzle, the air inlet section and the air outlet section are cylindrical, the shapes of the contraction section and the expansion section are round, the diameter of the large round end of the contraction section is equal to that of the air inlet section and is connected with the air inlet section through the large round end, the diameter of the small round end of the expansion section is equal to that of the small round end of the contraction section, the small round end of the expansion section is connected to the small round end of the contraction section, the diameter of the air outlet section is equal to that of the large round end of the expansion section, and the air outlet section is connected to the large round end of the expansion section.
Drawings
FIG. 1 is a schematic view of an embodiment of a jet nozzle of an air mill according to the present invention;
fig. 2 is a schematic view of the flow channel in fig. 1.
In the figure: 1-a body; 2-an air inlet end face; 3-an air outlet end face; 4-a flow-through channel; 5-an air inlet section; 6-a shrink section; 7-expanding the section; 8-an air outlet section; 9-air inlet; 10-an air outlet; 11-a flow guiding strip.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the air mill nozzle of the present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1 and 2, a jet mill nozzle includes: the body 1, body 1 has the air inlet end face 2 and the terminal surface 3 of giving vent to anger that are opposite to each other, is provided with circulation passageway 4 in body 1 inside, and circulation passageway 4 includes that the axis is overlapped and the section of admitting air 5, shrink section 6, expansion section 7 and the section of giving vent to anger 8 that connect gradually, and the section of admitting air 5 forms air inlet 9 at air inlet end face 2, and the section of giving vent to anger 8 forms gas outlet 10 at the terminal surface of giving vent to anger 3 to make gas can get into circulation passageway 4 and discharge through gas outlet 10 from air inlet 9. The shape of the air inlet section 5 and the air outlet section 8 are cylindrical, the shapes of the contraction section 6 and the expansion section 7 are round tables, the diameter of the big round end of the contraction section 6 is equal to that of the air inlet section 5 and is connected with the air inlet section 5 through the big round end, the diameter of the small round end of the expansion section 7 is equal to that of the small round end of the contraction section 6, the small round end of the expansion section 7 is connected to the small round end of the contraction section 6, and the diameter of the air outlet section 8 is equal to that of the big round end of the expansion section 7 and is connected to the big round end of the expansion section 7. By adopting the technical scheme, when the airflow passes through the contraction section 6 and is accelerated through the contraction action, the speed of the airflow sprayed out of the air outlet 10 is further improved, the flow speed of the airflow sprayed out of the air outlet 10 is greater than the flow speed of the airflow entering from the air inlet 9, and the effect of accelerating the airflow is realized. Thereby ensuring the crushing effect
Specifically, as shown in FIG. 2, the taper angle of the constricted section 6 is α, and 30.ltoreq.α.ltoreq.70 °. The purpose of the constriction 6 is to accelerate the gas entering the flow-through channel 4 to a supersonic speed when it reaches the junction of the constriction 6 and the expansion 7, providing conditions for a subsonic to supersonic transition. By adopting the technical scheme that alpha is more than or equal to 30 degrees and less than or equal to 70 degrees, the overlong shrinkage section 6 caused by the overlarge alpha angle can be avoided, the manufacturing cost is increased, and meanwhile, the influence on the efficient operation of the air mill nozzle caused by the overlarge alpha angle on the too-quick reduction of the cross section of the shrinkage section 6 can be avoided.
And/or the taper angle of the expansion section 7 is beta, and 20 deg. beta. 60 deg.. The purpose of the expansion section 7 is to further expand and accelerate the supersonic airflow to an optimal expansion state when reaching the junction of the expansion section 7 and the air outlet section 8 to achieve the designed airflow velocity. By adopting the technical scheme that beta is more than or equal to 20 degrees and less than or equal to 60 degrees, the overlength of the expansion section 7 caused by the overlarge beta angle can be avoided, the manufacturing cost of the nozzle is increased, and meanwhile, the expansion of gas caused by the overlarge beta angle can be avoided. And the gas reaches the optimal expansion state, and the highest efficiency under the condition can generate shock waves no matter under expansion or over expansion, so that the nozzle is separated from the optimal working state, the efficiency is reduced, and the crushing effect on materials is poor.
Example two
Based on the first embodiment, as shown in fig. 1 and 2, the number of the flow channels 4 is more than one;
the small round end of the contraction section 6 has a diameter of dcr, andthe following describes the various parameters in the formula:
1. p (P) 0 To the pressure of the gas entering the flow channel 4 from the gas inlet 9, wherein the pressure of the gas P entering the flow channel 4 from the gas inlet 9 0 Pressure P with external air supply connected to air inlet 9 1 In the related art, the air mill nozzle is a key factor to be considered in the design of the air mill nozzle, and has an important influence on the crushing effect of materials. The higher the velocity of the supersonic gas flow at the gas outlet 10, the higher the corresponding Mach number M, requiring a higher source pressure P 1 Providing momentum. P (P) 1 At a lower level, the gas cannot reach supersonic speed at the joint position of the contraction section 6 and the expansion section 7, P 1 Excessive means high equipment investment and high running cost. Thus, the external air source pressure P 1 The selection of (a) needs to comprehensively consider a plurality of factors such as jet mill nozzle design, material crushing performance, operation and maintenance costs and the like. To achieve external air supply pressure P 1 Is fitted to the nozzle inlet pressure P according to experimental data and theoretical analysis 0 The relationship with Mach number M is as follows: p (P) 0 ＝1.8788×M 2 -6.5972m+6.3364. Wherein M is Mach number corresponding to the air flow speed at the air outlet 10, and the value of M is 1-8, preferably 1.8-4. Air flow mill workIn the process, the pressure loss mainly comes from the air flow nozzle, but the pressure loss from the air source to the air inlet 9 should not be ignored, and the air source pressure which should be ensured by the compressed air can be calculated by adopting the following relation: p (P) 1＝ P 0 +0.05。
2. a is the atmospheric pressure, actually the atmospheric pressure at the point of use, a=0.08 to 0.11, usually 0.09 to 0.103, in MPa, where the pressure is the absolute pressure.
3. Q is the gas flow, i.e. the gas flow into the jet of the gas mill is counted under standard conditions, in m 3 And/h. The specific value of the gas flow Q can be obtained by direct metering through a flowmeter.
4. n is the number of the flow channels, and the theoretical gas flow of the single spraying and flowing channel 4 can be obtained by Q/n; the advantage of this arrangement is that only the total amount of compressed gas is metered, the individual nozzle amounts do not have to be metered, and accurate metering is difficult in practical use.
5. b is the throat diameter correction factor, when P 0 When the pressure is less than 1.2MPa, b is more than or equal to 1.3 and less than or equal to 1.45, and when P 0 When the pressure is more than 1.2MPa, b is more than or equal to 1.45 and less than or equal to 1.6.
Example III
Based on example two, as shown in FIG. 2, the diameter of the gas outlet section 8 is dout, and where M is the mach number corresponding to the gas flow velocity of the gas discharged from the gas outlet 10, k is the adiabatic index of the gas flowing through the flow channel 4, c is an index factor, and e is a correction value. The following describes each parameter in the formula in detail:
1. k is an adiabatic index of the gas flowing through the flow channel 4, and k is 1.67 when the gas flowing through the flow channel 4 is monoatomic molecules such as helium, neon, argon, etc.; when the gas flowing through the flow channel 4 is diatomic molecules such as hydrogen, nitrogen, oxygen, etc., k is 1.4; when the gas flowing through the flow channel 4 is air, k is also 1.4; when the gas flowing through the flow channel 4 is a triatomic molecule, such as carbon dioxide, k is 1.3.
2. c is an exponential factor, related to the nature of the gas flowing through the flow channel 4, and when the gas flowing through the flow channel 4 is a monoatomic molecule, such as helium, neon, argon, etc., c is 1.99; when the gas flowing through the flow channel 4 is diatomic molecules such as hydrogen, nitrogen, oxygen, etc., c is 3.0; when the gas flowing through the flow channel 4 is air, c is also 3.0; when the gas flowing through the flow channel 4 is a triatomic molecule, such as carbon dioxide, c is 3.83.
4. M is Mach number design value corresponding to the air flow velocity of the air discharged from the air outlet 10, and P can be obtained by calculating M 0 The formula is P 0 ＝1.8788×M 2 -6.5972M+6.3364。
5. The calculation procedure of dcr has been described in embodiment two and will not be repeated here.
6. e is a correction value, in this embodiment, the inner wall of the air outlet section 8 is in a smooth state (i.e. there is any structure capable of affecting the movement of the air flow in the inner wall of the air outlet section 8), and at this time, the value of e is 0.
Example IV
Based on the third embodiment, when the air flow reaches the joint position of the nozzle expansion section 7 and the air outlet section 8, the designed optimal expansion state is reached, the air flow rate reaches the maximum value, the air flow is rectified by the air outlet section 8 and then leaves the body 1 in a parallel jet flow state, and the entrainment effect of the parallel jet flow on the materials in the air flow mill is not ideal, so the technical scheme of the embodiment is that as shown in fig. 2, the guide strips 11 are arranged on the inner wall of the air outlet section 8, the guide strips 11 extend along a curve from the position close to the expansion section 7 to the position close to the air outlet 10, the number of the guide strips 11 is at least two, and at least two guide strips 11 are uniformly distributed along the circumferential direction of the air outlet section 8. Two points A and B are selected on the extension curve of the guide strip 11, the distance between A and B along the axial direction of the air outlet section 8 is 1 mm, and the straight line passing through A and tangent to the extension curve of the guide strip 11 is L 1 A straight line passing through B and tangent to the extension curve of the flow guiding strip 11 is L 2 ,L 1 And L 2 An included angle theta is formed, and theta is more than or equal to 5 degrees and less than or equal to 15 degrees. Meanwhile, the height of the guide strips 11 in the radial direction of the air outlet section 8 is 0.1 to 0.5 mm. In order to weaken the abrasion of the air flow to the guide strip 11 in actual manufacture, the surfaces of the air outlet section 8 and the guide strip 11 can be coated with an abrasion-proof layer. The arrangement of the flow guide strips 11 can enable the supersonic airflow discharged from the air outlet 10 to be in a rotational flow state, so that entrainment and carrying of the supersonic airflow on materials are promoted, and the crushing effect on the materials is improved. In this case, in the equation for calculating the diameter dout of the gas outlet section 8, the value of e is 0.4/k.
Example five
Based on the second and fourth embodiments, as shown in fig. 2, the diameter of the intake section 5 is d in And 1.5×d cr ＜d in ＜4×d cr . The calculation step of dcr is described in the second embodiment, and the description thereof will not be repeated here.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. A jet mill nozzle, characterized in that:
comprising the following steps: a body (1);
the body (1) is provided with an air inlet end face (2) and an air outlet end face (3) which are opposite to each other, a circulation channel (4) is arranged in the body (1), the circulation channel (4) comprises an air inlet section (5), a contraction section (6), an expansion section (7) and an air outlet section (8) which are overlapped in an axis and are sequentially connected, the air inlet section (5) forms an air inlet (9) on the air inlet end face (2), the air outlet section (8) forms an air outlet (10) on the air outlet end face (3), and therefore air can enter the circulation channel (4) from the air inlet (9) and is discharged through the air outlet (10);
the shape of the air inlet section (5) and the shape of the air outlet section (8) are cylindrical, the shape of the contraction section (6) and the shape of the expansion section (7) are round table shapes, the diameter of the big round end of the contraction section (6) is equal to that of the air inlet section (5) and is connected with the air inlet section (5) through the big round end, the diameter of the small round end of the expansion section (7) is equal to that of the contraction section (6), the small round end of the expansion section (7) is connected to the small round end of the contraction section (6), and the diameter of the air outlet section (8) is equal to that of the big round end of the expansion section (7) and is connected to the big round end of the expansion section (7).
2. A gas mill nozzle according to claim 1, characterized in that:
the cone angle of the contraction section (6) is alpha, and alpha is more than or equal to 30 degrees and less than or equal to 70 degrees;
and/or the taper angle of the expansion section (7) is beta, and beta is 20 DEG-60 deg.
3. A gas mill nozzle according to claim 1, characterized in that:
the number of the circulating channels (4) is more than one;
the diameter of the small round end of the contraction section (6) is d cr And (2) and
wherein P is 0 For the gas pressure entering the flow channel (4) from the gas inlet (9), Q is the gas flow, n is the number of the flow channels (4), a is the atmospheric pressure, b is the correction coefficient, and 1.3.ltoreq.b.ltoreq.1.6.
4. A gas mill nozzle according to claim 3, wherein:
an external gas source can be connected to the gas inlet (9) for inputting gas into the flow channel (4);
P 1 ＝P 0 +0.05, where P 1 Is the external air source pressure.
5. A gas mill nozzle according to claim 4, wherein:
when P 0 When the pressure is less than 1.2MPa, b is more than or equal to 1.3 and less than or equal to 1.45, and when P 0 When the pressure is more than 1.2MPa, b is more than or equal to 1.45 and less than or equal to 1.6.
6. A gas mill nozzle according to any one of claims 3 to 5, wherein:
the diameter of the air outlet section (8) is d out And (2) and
wherein M is Mach number corresponding to the airflow velocity of the gas discharged from the gas outlet (10), k is the adiabatic index of the gas flowing through the flow channel (4), c is an index factor, and e is a correction value.
7. A gas mill nozzle according to claim 6, wherein:
P 0 ＝1.8788×M 2 -6.5972M+6.3364。
8. a gas mill nozzle according to claim 6, wherein:
the inner wall of the air outlet section (8) is provided with guide strips (11), the guide strips (11) extend along a curve from a position close to the expansion section (7) to a position close to the air outlet (10), the number of the guide strips (11) is at least two, and at least two guide strips (11) are uniformly distributed along the circumferential direction of the air outlet section (8);
two points A and B are selected on the extension curve of the guide strip (11), the distance between A and B along the axial direction of the air outlet section (8) is 1 mm, and the straight line passing through A and tangent to the extension curve of the guide strip (11) is L 1 A straight line passing through B and tangent to the extension curve of the flow guiding strip (11) is L 2 ,L 1 And L 2 An included angle theta is formed, and theta is more than or equal to 5 degrees and less than or equal to 15 degrees.
9. A gas mill nozzle according to claim 8, wherein:
the height of the guide strip (11) is 0.1 to 0.5 mm in the radial direction of the air inlet section (5).
10. A gas mill nozzle according to any one of claims 3 to 5, wherein:
the diameter of the air inlet section (5) is d in And 1.5×d cr ＜d in ＜4×d cr 。
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| CN202311807175.9A CN117772369B (en) | 2023-12-26 | 2023-12-26 | Air mill nozzle |
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| CN202311807175.9A CN117772369B (en) | 2023-12-26 | 2023-12-26 | Air mill nozzle |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020063177A1 (en) * | 1998-09-04 | 2002-05-30 | William Graham | Pulveriser and method of pulverising |
| CN104368820A (en) * | 2014-10-17 | 2015-02-25 | 同济大学 | Laval and hartmann structure integrated type supersonic-speed atomizing nozzle |
| CN205495874U (en) * | 2015-11-09 | 2016-08-24 | 中国人民解放军军械工程学院 | Flow atomizing nozzle from inhaling formula diphase |
| CN208466109U (en) * | 2018-06-30 | 2019-02-05 | 柘城县锦源制造有限公司 | Fine powder air-flow grinds nozzle |
| CN111346589A (en) * | 2020-03-05 | 2020-06-30 | 上海交通大学 | Micro-nano bubble gas-liquid reactor |
-
2023
- 2023-12-26 CN CN202311807175.9A patent/CN117772369B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020063177A1 (en) * | 1998-09-04 | 2002-05-30 | William Graham | Pulveriser and method of pulverising |
| CN104368820A (en) * | 2014-10-17 | 2015-02-25 | 同济大学 | Laval and hartmann structure integrated type supersonic-speed atomizing nozzle |
| CN205495874U (en) * | 2015-11-09 | 2016-08-24 | 中国人民解放军军械工程学院 | Flow atomizing nozzle from inhaling formula diphase |
| CN208466109U (en) * | 2018-06-30 | 2019-02-05 | 柘城县锦源制造有限公司 | Fine powder air-flow grinds nozzle |
| CN111346589A (en) * | 2020-03-05 | 2020-06-30 | 上海交通大学 | Micro-nano bubble gas-liquid reactor |
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