CN113731664A - Gas-assisted two-component two-stage mixing atomizing nozzle - Google Patents
Gas-assisted two-component two-stage mixing atomizing nozzle Download PDFInfo
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- CN113731664A CN113731664A CN202110946581.8A CN202110946581A CN113731664A CN 113731664 A CN113731664 A CN 113731664A CN 202110946581 A CN202110946581 A CN 202110946581A CN 113731664 A CN113731664 A CN 113731664A
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- 238000000889 atomisation Methods 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 230000008602 contraction Effects 0.000 claims description 42
- 239000007921 spray Substances 0.000 claims description 13
- 230000005855 radiation Effects 0.000 claims description 11
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 claims description 5
- 238000011017 operating method Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 41
- 239000007788 liquid Substances 0.000 description 26
- 239000002245 particle Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 206010043528 Throat tightness Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
- B05B7/0491—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid the liquid and the gas being mixed at least twice along the flow path of the liquid
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Abstract
本发明公开了一种气助式两组分两级混合雾化喷头，包括高压进气口、一级收缩喉管、高压气体通道、组分进口一、一级混合室、二级收缩喉管、组分混合通道、组分进口二、二级混合室、喷嘴口；高压进气口接通空气压缩机，高压气体进入高压气体通道后于组分进口一处形成负压，组分由组分进口一自吸进入一级混合室中充分混合，实现组分混合物的第一次雾化；组分混合物通过组分混合通道高速喷出于，组分进口二处产生负压，组分进口二自吸进入到二级混合室后充分混合，经喷嘴口喷出形成了第二次雾化；利用高压气体对组分能够产生雾化作用，并利用高压气体产生的负压能够自吸组分进口一和组分进口二并将其充分混合，进一步实现两组分充分混合和二次雾化。
The invention discloses a gas-assisted two-component two-stage mixing atomizing nozzle, which comprises a high-pressure air inlet, a first-stage shrinking throat, a high-pressure gas channel, a component inlet, a first-stage mixing chamber, and a second-stage shrinking throat , Component mixing channel, component inlet two, two-stage mixing chamber, nozzle port; the high-pressure air inlet is connected to the air compressor, and the high-pressure gas enters the high-pressure gas channel to form a negative pressure at the component inlet, and the components are separated by the component. The sub-inlet one self-suction enters the first-stage mixing chamber for full mixing to realize the first atomization of the component mixture; the component mixture is ejected at high speed through the component mixing channel, and negative pressure is generated at the second component inlet, and the component inlet The second self-priming enters the secondary mixing chamber and is fully mixed, and is ejected through the nozzle to form the second atomization; the use of high-pressure gas can atomize the components, and the negative pressure generated by the high-pressure gas can be used to self-prime the group. Inlet 1 and component inlet 2 are divided into two components and fully mixed to further achieve full mixing and secondary atomization of the two components.
Description
Technical Field
The invention relates to an air-assisted two-component two-stage mixing atomizer, in particular to an air-assisted two-component two-stage mixing atomizer which can fully mix gas, liquid and liquid, atomize for the second time, achieve a certain purification degree, refine the particle size of fog drops and have higher atomization coefficient.
Background
At present, gas-liquid two-phase atomizing nozzles are difficult to realize sufficient gas-liquid mixing structurally, the operating principle mainly adopted is that gas enters from one end, liquid enters from the other end, and the liquid is sprayed out from a nozzle through high-pressure gas, but the atomizing effect is general, the spraying range is narrow, and the atomizing nozzles cannot be well applied to most fields; this design will use main gas circuit to be gaseous, and other two passway mouths can be gaseous and liquid all the way, also can two ways be liquid, realize gas-liquid mixture and gas-liquid mixture, and the mixture of multiple composition makes it fully mix and react each other in inside, makes its diffusion in certain space. Therefore, the air-assisted spray head capable of fully realizing gas-liquid mixing or gas-liquid mixing is designed.
Disclosure of Invention
The gas-assisted two-component two-stage mixing atomizing nozzle is designed aiming at the problems in the prior art, gas-liquid/gas-liquid full mixing and secondary atomization are effectively realized through high-pressure gas, a certain purification degree can be achieved, the particle size of fog drops is further reduced, and the atomizing coefficient is higher.
A gas-assisted two-component two-stage mixing atomization nozzle comprises a high-pressure gas inlet, a first-stage contraction throat pipe, a high-pressure gas channel, a first component inlet, a first-stage mixing chamber, a second-stage contraction throat pipe, a component mixing channel, a second component inlet, a second-stage mixing chamber and a nozzle opening;
a high-pressure air inlet, a primary contraction throat pipe, a high-pressure gas channel, a primary mixing chamber, a secondary contraction throat pipe, a component mixing channel, a secondary mixing chamber and a nozzle opening are sequentially arranged on the central axis of the spray head from the spray head inlet to the spray head outlet; the first component inlet is connected into the first-stage mixing chamber, the second component inlet is connected into the second-stage mixing chamber, and the center line of the inlet end of the second component inlet is collinear with the end face of the outlet end of the component mixing channel.
Further, the diameter of the high-pressure gas inlet is d1The length between the inner port and the outer port is L1(ii) a The first-stage contraction throat pipe is in a contraction cone shape from the air inlet to the air outlet, and the contraction opening is arranged in the high-pressure air inletLength L of port2And L is1＝L2Are equal.
Further, the diameter d of the high-pressure gas passage2Diameter d of component mixing channel3The relationship is d3＝1.5～1.7d2Is preferably d3＝1.6d2(ii) a Length L of high pressure gas channel3Length L of channel for mixing with component4The relationship between the two is L3＝2.4～2.6L4Is preferably L3＝2.5L4。
Further, the length L of the primary mixing chamber5And a secondary mixing chamber length L6The relationship is L5＝L6(ii) a Diameter d of the primary mixing chamber4And diameter d of the secondary mixing chamber5The relationship is d4＝d5。
Further, the component inlet I and the component inlet II are on the same axial plane; the first component inlet (4) and the second component inlet (8) both comprise an inlet end and an outlet end, and the diameter d of the inlet end of the first component inlet6Diameter d of inlet end of component inlet II7The diameters of the outlet ends of the component inlet I and the component inlet II are d8The relationship is d6＝d7＝6d8(ii) a The vertical length L of the central line of the first component inlet from the inlet end surface of the high-pressure gas channel7＝0.3L3(ii) a The central line of the component inlet II coincides with the outlet end face of the component mixing channel and is away from the vertical length L of the inlet end face of the component mixing channel8，L8＝L4(ii) a The inlet depth of the component I and the inlet depth of the component II are both h2The outlet depth is h1And h is2＝5h1。
Furthermore, the contraction angle of a first-stage contraction throat pipe arranged from the inlet to the outlet of the spray head is alpha, the contraction angle of a second-stage contraction throat pipe is beta, and the beta is 1.5 alpha.
Furthermore, the nozzle opening of the nozzle head is provided with an inner port which is a contraction port and an outer port which is a radiation port which are symmetrically arranged, the angles of the contraction port and the radiation port are all theta, and beta is 1.2 theta or 1.5 alpha; from contractionThe length from the mouth to the radiation opening is L9And L is9＝L4The high velocity gas flow through the conical nozzle opening facilitates atomization.
A working method of an air-assisted two-component two-stage mixing atomizing nozzle is characterized in that a high-pressure air inlet is communicated with an air output end of an air compressor, high-pressure air enters a high-pressure air channel and then forms negative pressure at a component inlet, and a component I enters a first-stage mixing chamber from a component inlet for self-suction and is fully mixed, so that the first atomization of a component mixture is realized; the component mixture is sprayed out of the outlet end of the component mixing channel at high speed through the component mixing channel to generate negative pressure, the component II enters the secondary mixing chamber by self absorption and is fully mixed, and the component II is sprayed out through the nozzle opening to form secondary atomization.
The invention has the beneficial effects that:
(1) the sizes of all parts of the air-assisted two-component two-stage mixing atomizing nozzle are set, on one hand, the sizes of the nozzles are mutually restricted and associated, so that the setting is further determined on the basis of design and test, and the aim of fully mixing the nozzles can be better fulfilled; on the other hand, the structure can be reasonably scaled through the relation convention among the sizes, and the requirements of different working conditions can be met.
(2) In order to realize more sufficient gas-liquid-gas mixing, a high-pressure gas inlet channel is designed on the central axis of a spray head, a first component inlet and a second component inlet are designed on the same axis, high-speed gas flow enters from one end of a high-pressure inlet, negative pressure is formed by the high-pressure gas flow to suck the first component and the second component into a mixing cavity for sufficient mixing, and the first component and the second component are sprayed out through a nozzle opening, so that the gas-liquid-gas mixing and secondary atomization are realized, a certain purification degree can be reached, the particle size of atomized droplets is refined, and the atomization coefficient is higher.
Drawings
Fig. 1 is a schematic structural diagram of an air-assisted two-component two-stage mixing atomizer.
Reference numerals:
1-a high pressure gas inlet; 2-first-stage contraction throat; 3-high pressure gas channel; 4-component inlet one; 5-a first-stage mixing chamber; 6-two-stage constriction throat; 7-component mixing channel; 8-component inlet two; 9-a secondary mixing chamber; 10-nozzle opening.
Detailed Description
The invention will be further described with reference to the accompanying drawings, in which embodiment component inlet one 4 is defined as the liquid inlet, and the liquid is water (H)2O); the second component inlet 8 is defined as a gas inlet, and the gas is ozone (O)3)。
As shown in fig. 1, the gas-assisted two-component two-stage mixing atomizer comprises a high-pressure gas inlet 1, a first-stage contraction throat 2, a high-pressure gas channel 3, a liquid inlet 4, a first-stage mixing chamber 5, a second-stage contraction throat 6, a component mixing channel 7, a gas inlet 8, a second-stage mixing chamber 9 and a nozzle opening 10; the high-pressure gas inlet 1 is communicated with an air compressor, negative pressure is formed at a component inlet I4 of a liquid water inlet after high-pressure gas enters the high-pressure gas channel 3, and liquid enters a primary mixing chamber 5 from the component inlet I4 to be fully mixed; the gas-liquid mixture is ejected out of the outlet end of the component mixing channel 7 at high speed through the gas-liquid component mixing channel 7 to form negative pressure, and the gas enters the secondary mixing chamber 9 for mixing.
As shown in FIG. 1, the high-pressure gas inlet 1 has a diameter d18.4mm, and a length L from the inner port to the outer port1The first-stage contraction throat pipe 2 is in a contraction cone shape from the air inlet to the air outlet, and the length from a contraction opening to an inner port of the high-pressure air inlet 1 is L2And L is1＝L2＝6.5mm。
As shown in fig. 1, the high-pressure gas passage 3 has a diameter d21.5mm, the diameter of the component mixing channel 7 is d32.4 mm; length L of high-pressure gas channel 3310.5mm, length L of component mixing channel 74＝4.0mm。
As shown in FIG. 1, the length L of the primary mixing chamber 55And the length L of the secondary mixing chamber 96Equal, the two relations are L5＝L610.0 mm; diameter d of the primary mixing chamber 54And diameter d of the secondary mixing chamber 95Equal, the two relations are d4＝d5＝10.0mm。
As shown in fig. 1, the liquid entersThe first inlet 4 and the second inlet 8 are distributed on the same axial plane, the diameter d of the inlet end of the liquid6Diameter d of gas inlet end7The diameters of the outlet ends of the liquid and the gas are both d8，d6＝d7＝6.0mm，d81 mm; the vertical distance L between the central line of the liquid inlet and the inlet end surface of the high-pressure gas channel 373.15 mm; the central line of the gas inlet coincides with the outlet end face of the component mixing channel 7 and is at a vertical distance L from the inlet end face of the component mixing channel84.0 mm; the inlet depths of the liquid inlet and the gas inlet are both h2The outlet depth is h1，h2＝7.0mm,h1＝1.4mm。
As shown in fig. 1, the contraction angle of the primary contraction throat of the nozzle from the inlet to the outlet of the nozzle is α, the contraction angle of the secondary contraction throat is β, β is 90 °, and α is 60 °.
Furthermore, the inner port of the nozzle of the spray head is a contraction port, the outer port of the nozzle is a radiation port, the contraction port and the radiation port are symmetrically arranged, the angles of the contraction port and the radiation port are all theta, and the theta is 75 degrees; the length from the contraction opening to the radiation opening is L94.0mm, high velocity air flow through the conical nozzle opening facilitates atomization.
Claims (9)
1. The utility model provides a gas-assisted two-component two-stage mixing atomizer which characterized in that: the spray head comprises a high-pressure air inlet (1), a primary contraction throat pipe (2), a high-pressure gas channel (3), a component inlet I (4), a primary mixing chamber (5), a secondary contraction throat pipe (6), a component mixing channel (7), a component inlet II (8), a secondary mixing chamber (9) and a nozzle opening (10);
a high-pressure air inlet (1), a primary contraction throat pipe (2), a high-pressure gas channel (3), a primary mixing chamber (5), a secondary contraction throat pipe (6), a component mixing channel (7), a secondary mixing chamber (9) and a nozzle opening (10) are sequentially arranged on the central axis of the spray head from the spray head inlet to the spray head outlet; the first component inlet (4) is connected into the first-stage mixing chamber (5), the second component inlet (8) is connected into the second-stage mixing chamber (9), and the center line of the inlet end of the second component inlet (8) is collinear with the end face of the outlet end of the component mixing channel (7).
2. An air-assisted two-component two-stage mixing atomizer according to claim 1, wherein: the diameter of the high-pressure air inlet (1) is d1The length between the inner port and the outer port is L1；
The primary contraction throat pipe (2) is in a contraction cone shape from the air inlet to the air outlet, and the length L from a contraction port to an inner port of the high-pressure air inlet (1)2And L is1＝L2Are equal.
3. An air-assisted two-component two-stage mixing atomizer according to claim 1, wherein: the diameter d of the high-pressure gas channel (3)2Diameter d of the component mixing channel (7)3The relationship is d3＝1.5～1.7d2(ii) a The length L of the high-pressure gas channel (3)3The length L of the component mixing channel (7)4The relationship between the two is L3＝2.4～2.6L4。
4. A gas-assisted two-component two-stage mixing atomizer according to claim 3, wherein: d3＝1.6d2；L3＝2.5L4。
5. An air-assisted two-component two-stage mixing atomizer according to claim 1, wherein: length L of primary mixing chamber (5)5And the length L of the secondary mixing chamber (9)6The relationship is L5＝L6(ii) a Diameter d of the primary mixing chamber (5)4And the diameter d of the secondary mixing chamber (9)5The relationship is d4＝d5。
6. An air-assisted two-component two-stage mixing atomizer according to claim 1, wherein: the component inlet I (4) and the component inlet II (8) are on the same axial plane;
the first component inlet (4) and the second component inlet (8) both comprise inlet ends and outlet ends, and the first component inlet (4) and the second component inlet (8) respectively comprise inlet ends and outlet ends4) Diameter d of inlet end6Diameter d of inlet end of component inlet II (8)7The diameters of the outlet ends of the component inlet I (4) and the component inlet II (8) are d8The relationship is d6＝d7＝6d8；
The vertical distance L between the central line of the component inlet I (4) and the inlet end surface of the high-pressure gas channel (3)7＝0.3L3；
The central line of the component inlet II (8) is coincident with the outlet end face of the component mixing channel (7), and the vertical distance L from the inlet end face of the component mixing channel (7)8，L8＝L4；
The inlet depths of the component inlet I (4) and the component inlet II (8) are both h2The outlet depth is h1And h is2＝5h1。
7. An air-assisted two-component two-stage mixing atomizer according to claim 1, wherein: the contraction angle of a first-stage contraction throat pipe (2) arranged from the inlet to the outlet of the spray head is alpha, the contraction angle of a second-stage contraction throat pipe (6) is beta, and the beta is 1.5 alpha.
8. An air-assisted two-component two-stage mixing atomizer according to claim 7, wherein: the nozzle opening (10) of the spray head is structurally characterized in that an inner side port is a contraction port, an outer side port is a radiation port, the contraction port and the radiation port are symmetrically arranged, angles of the contraction port and the radiation port are all theta, and beta is 1.2 theta or 1.5 alpha; the length from the contraction opening to the radiation opening is L9And L is9Length L of component mixing channel (7)4The high velocity gas flow through the conical nozzle opening facilitates atomization.
9. The operating method of an air-assisted two-component two-stage mixing atomizer according to any one of claims 1 to 7, wherein: the high-pressure air inlet (1) is communicated with an air output end of an air compressor, high-pressure air enters the high-pressure air channel (3) and forms negative pressure at the component inlet I (4), and the component I is self-sucked into the primary mixing chamber (5) from the component inlet I (4) and is fully mixed, so that the first atomization of a component mixture is realized; the component mixture is sprayed out of the outlet end of the component mixing channel (7) at high speed through the component mixing channel (7) to generate negative pressure, the component II enters the secondary mixing chamber (9) by self suction and is fully mixed, and the component II is sprayed out through the nozzle opening (10) to form secondary atomization.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110946581.8A CN113731664A (en) | 2021-08-18 | 2021-08-18 | Gas-assisted two-component two-stage mixing atomizing nozzle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110946581.8A CN113731664A (en) | 2021-08-18 | 2021-08-18 | Gas-assisted two-component two-stage mixing atomizing nozzle |
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| CN113731664A true CN113731664A (en) | 2021-12-03 |
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| CN202110946581.8A Pending CN113731664A (en) | 2021-08-18 | 2021-08-18 | Gas-assisted two-component two-stage mixing atomizing nozzle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114749296A (en) * | 2022-05-12 | 2022-07-15 | 鑫广绿环再生资源股份有限公司 | Urea solution atomizing spray gun |
| CN114950758A (en) * | 2022-06-02 | 2022-08-30 | 重庆大学 | An Atomizing Shape Adjustable Nozzle Based on Multiple Synchronous Compression Technology |
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| EP0593171A1 (en) * | 1992-10-13 | 1994-04-20 | Texaco Development Corporation | Method for atomizing feedstock in a fluid catalytic cracking process |
| CN1145823A (en) * | 1995-07-28 | 1997-03-26 | 液体空气乔治洛德方法利用和研究有限公司 | Process and device for spraying liquid product |
| US6135366A (en) * | 1998-06-15 | 2000-10-24 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Injector of fuel in the form of a mist for an oil burner, and burner equipped with such an injector |
| CN2503998Y (en) * | 2001-11-07 | 2002-08-07 | 华中科技大学 | Concealed sucking, double spraying shock wave medium sprayer |
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| CN206514304U (en) * | 2016-12-06 | 2017-09-22 | 南京工业大学 | Adjustable two-stage full-premixing gas stove ejector |
| CN209484599U (en) * | 2018-12-13 | 2019-10-11 | 北京炬焰科技有限公司 | A kind of high-pressure double-stage injection premixed device device |
| CN212732644U (en) * | 2020-06-16 | 2021-03-19 | 鞍山创鑫环保科技股份有限公司 | Three-fluid spray gun for hydrochloric acid regenerator unit |
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2021
- 2021-08-18 CN CN202110946581.8A patent/CN113731664A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0593171A1 (en) * | 1992-10-13 | 1994-04-20 | Texaco Development Corporation | Method for atomizing feedstock in a fluid catalytic cracking process |
| CN1145823A (en) * | 1995-07-28 | 1997-03-26 | 液体空气乔治洛德方法利用和研究有限公司 | Process and device for spraying liquid product |
| US6135366A (en) * | 1998-06-15 | 2000-10-24 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Injector of fuel in the form of a mist for an oil burner, and burner equipped with such an injector |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114749296A (en) * | 2022-05-12 | 2022-07-15 | 鑫广绿环再生资源股份有限公司 | Urea solution atomizing spray gun |
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| CN114950758A (en) * | 2022-06-02 | 2022-08-30 | 重庆大学 | An Atomizing Shape Adjustable Nozzle Based on Multiple Synchronous Compression Technology |
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Application publication date: 20211203 |