CN104815773A - Two-phase flow atomization air mixing nozzle - Google Patents
Two-phase flow atomization air mixing nozzle Download PDFInfo
- Publication number
- CN104815773A CN104815773A CN201510174084.5A CN201510174084A CN104815773A CN 104815773 A CN104815773 A CN 104815773A CN 201510174084 A CN201510174084 A CN 201510174084A CN 104815773 A CN104815773 A CN 104815773A
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- Prior art keywords
- nozzle
- phase flow
- mixing nozzle
- mixing
- flow atomization
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Classifications
-
- 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
- B05B7/0441—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 with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
- B05B7/0458—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 with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber the gas and liquid flows being perpendicular just upstream the mixing chamber
-
- 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
- B05B7/12—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
- B05B7/1209—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages the controlling means for each liquid or other fluent material being manual and interdependent
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- Nozzles (AREA)
Abstract
The invention discloses a two-phase flow atomization air mixing nozzle, and belongs to the technical field of fluid machinery. The two-phase flow atomization air mixing nozzle comprises a nozzle body, an adjusting sleeve, a locking sleeve and a mixing nozzle, wherein outlet ends of the nozzle body and the mixing nozzle both adopt the shape of gradually decreased taper holes, and outlet holes of the nozzle body and the mixing nozzle are concentric; multiple air inlet holes are formed in the mixing nozzle; multiple adjusting holes are formed in the adjusting sleeve; the adjusting sleeve rotates to change relative positions of the adjusting holes and the air inlet holes to change the air mixing quantity of the nozzle; as the nozzle adopts a two-phase flow air mixing structure, a more ideal atomization spraying effect can be generated; and meanwhile, the two-phase flow atomization gas mixing nozzle is simple in structure, convenient to operate and easy in manufacturing.
Description
Technical field
The present invention relates to a kind of nozzle arrangements, particularly relate to a kind of two phase flow for impact driven sprinkler atomization aeration nozzle, belong to fluid machinery technical field.
Background technology
Impact driven sprinkler is the widest a kind of sprinkling irrigation sprinkler head of domestic application, is ensure shower nozzle steady operation and hydraulic performance, and usually need to provide higher operating pressure, this causes spray irrigation system energy consumption higher.For reducing the operating pressure of Rocker arm spray head or improving hydraulic performance, related scientific research personnel provide different solutions.
No. CN201930870U, patent discloses a kind of impact driven sprinkler, the auxiliary jet using top radial direction to have throttling channel realizes the sprinkling irrigation of shower nozzle one's own department or unit near zone, improve sprinkling irrigation coverage, this structure improves the radial water distribution of shower nozzle by additional structure, but on shower nozzle jet break process without impact, less on the water distribution impact of shower nozzle low pressure operating mode, the low pressure sprinkling irrigation of shower nozzle can not be realized.
No. CN202762569U, patent discloses a kind of Rocker arm spray head, the main burner of mesh and auxiliary jet is used to accelerate jet crushing, improve the water distribution of shower nozzle, but mesh nozzle significantly can reduce sprinkler pattern range, degree is improved compared to the uniformity, range will be more remarkable on sprinkler performance impact, and therefore the method actual application prospect is poor.During shower nozzle work, spray dispersion becomes the process of water droplet to be because the turbulent fluctuation effect of jet makes surrounding air and jet particle generation momentum-exchange, and the gas phase near fluid column surface obtains certain speed, and power stream surface has partially liq to have the loss of momentum simultaneously, and slow, depart from main body jet gradually, from stressed upper analysis, jet main body is by gravity, air drag, the impact of surface tension etc., make flow velocity skewness in jet flow section, continuous fluid is chipping.The nozzle of existing impact driven sprinkler is generally simple negative throat noz(zle), only entrainments air by the border after jet ejection and realizes atomization, and atomizing effect is difficult to control.
Summary of the invention
The object of the invention is to overcome prior art deficiency, provide a kind of two phase flow to be atomized aeration nozzle, it can improve the jet dispersion effect of impact driven sprinkler under low pressure operating mode effectively, improves shower nozzle irrigation uniformity.
In order to reach upper object, present invention employs following technical scheme:
A kind of two phase flow atomization aeration nozzle, is characterized in that: described two phase flow atomization aeration nozzle comprises nozzle body, regulating sleeve, lock sleeve and mixing nozzle; Described mixing nozzle is fixedly connected on outside nozzle body by screw thread; Described regulating sleeve is sleeved on the outside of mixing nozzle; Described lock sleeve is fixedly connected on outside mixing nozzle by screw thread, to compress regulating sleeve, prevents regulating sleeve from sliding.
Wherein, described nozzle body and mixing nozzle all adopt convergent taper hole shape, and nozzle body and mixing nozzle outlet opening be concentric, after preventing eccentric assembling, jet main body impacts mixing nozzle inwall, cause mixing nozzle inner filling water stream, gas-liquid mixed chamber cannot be formed;
Be provided with two sealing rings inside described regulating sleeve, sealing ring is built with the gap between sealing ring sealing regulating sleeve and mixing nozzle;
Described mixing nozzle offers several air admission holes near nozzle body one end side; Described regulating sleeve offers several regulating the qi flowing in the channels holes, the position in regulating the qi flowing in the channels hole need ensure to assemble rear air admission hole and regulating the qi flowing in the channels hole UNICOM; Rotary regulating sleeve, regulates the adjustable air entrainment of relative position in air admission hole and regulating the qi flowing in the channels hole, changes impact driven sprinkler jet atomization effect.
Described nozzle body outlet bore dia is d, and the outlet opening diameter of mixing nozzle is D, then
; With the increase of nozzle body (5) diameter d,
value increases, particularly, as d≤8mm,
, when
time,
;
Distance between described nozzle body outlet hole and the outlet opening of mixing nozzle is L, and
;
Air admission hole quantity on described mixing nozzle is greater than 3, circumferentially uniform; The aperture of air admission hole is A, when operating pressure at sprinkler is lower,
, when operating pressure is higher, the quantity in tonifying Qi hole suitably can be increased, tonifying Qi hole
.
As the shower nozzle less to inlet diameter, as PY10, PY15 and PY20 shower nozzle, its air admission hole diameter is for pressing following dimensioned, to PY30 and with upper nozzle, its air admission hole diameter is for pressing following dimensioned, and air admission hole diameter dimension is, also can suitably increase air admission hole quantity.
The invention has the beneficial effects as follows:
Mixing nozzle outlet opening is larger than nozzle body outlet hole, can prevent the inwall of jet impulse mixing nozzle, causes mixing nozzle inside to produce negative pressure cavity; Can ensure that jet can entrainment more air in negative pressure cavity by the aperture A of the distance L between design nozzle body outlet hole and the outlet opening of mixing nozzle and air admission hole, form the power stream of gas-liquid two-phase mixing.
Nozzle arrangements provided by the invention is simple, easy manufacture, the aqueous vapor dual-phase jet entered environment pressure produced after nozzle mixing is in atmospheric infinite space, because water jet self contains micro-bubble, before and after ejection, there is the change of volume because of pressure change in bubble, has an impact, significantly improve the atomizing effect of impact driven sprinkler to the cracked of jet main body.
Accompanying drawing explanation
Fig. 1 is the structural representation of impact driven sprinkler of the prior art and nozzle mounted thereto;
Fig. 2 is two phase flow of the present invention atomization aeration nozzle arrangements schematic diagram.
Fig. 3 is the water distribution curve under aeration impact driven sprinkler and plain radial shower nozzle low pressure operating mode.
Be labeled as in figure: 1-nozzle assembly, 2-rocking arm, 3-changement, 4-jet pipe, 5-nozzle body, 6-regulating sleeve, 7-lock sleeve, 8-mixing nozzle, 9-sealing ring, 10-air admission hole, 11-adjustment hole.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
As shown in Figure 2, a kind of two phase flow atomization aeration nozzle, comprises nozzle body 5, regulating sleeve 6, lock sleeve 7 and mixing nozzle 8; Described mixing nozzle 8 is fixedly connected on outside nozzle body 5 by screw thread; Described regulating sleeve 6 is sleeved on the outside of mixing nozzle 8; Described lock sleeve 7 is fixedly connected on outside mixing nozzle 8 by screw thread, to compress regulating sleeve 6, prevents regulating sleeve 6 from sliding.
Wherein nozzle body 5 and mixing nozzle 8 all adopt convergent taper hole shape, and nozzle body 5 and mixing nozzle 8 outlet opening be concentric, after preventing eccentric assembling, jet main body impacts mixing nozzle 8 inwall, causes mixing nozzle 8 inner filling water stream, cannot form gas-liquid mixed chamber;
Be provided with two sealing rings inside regulating sleeve 6, sealing ring seals the gap between regulating sleeve 6 and mixing nozzle 8 built with sealing ring 9;
Mixing nozzle 8 offers several air admission holes 10 near nozzle body 5 one end side; Described regulating sleeve 6 offers several regulating the qi flowing in the channels holes 11, the position in regulating the qi flowing in the channels hole 11 need ensure to assemble rear air admission hole 10 and regulating the qi flowing in the channels hole 11 UNICOM; Rotary regulating sleeve 6, regulates the adjustable air entrainment of relative position in air admission hole 10 and regulating the qi flowing in the channels hole 11, changes impact driven sprinkler jet atomization effect.
Be described below using PY15 shower nozzle as embodiment particularly, the nozzle body 5 outlet opening diameter of PY15 shower nozzle is in the present embodiment
d=6mm, the outlet opening diameter of mixing nozzle 8 is that D can by following dimensioned
, by prototype test and verification, the outlet opening diameter optimal value of PY15 shower nozzle mixing nozzle 8 is got
d=6.3mm.Distance between the outlet opening of nozzle body 5 and mixing nozzle 8 is
l, and
.Distance between the outlet opening of nozzle body 5 and mixing nozzle 8 in the present embodiment
lbe of a size of
l=40mm.
Mixing nozzle 8 offers several air admission holes 10, circumferentially uniform, the aperture of air admission hole 10 is
a; Regulating sleeve 6 has several regulating the qi flowing in the channels holes 11, the quantity in regulating the qi flowing in the channels hole 11 is consistent with the quantity of air admission hole 10, and identical value is got with the aperture of air admission hole 10 in the aperture in usual regulating the qi flowing in the channels hole 11.
The shower nozzle less to inlet diameter, as PY10, PY15 and PY20 shower nozzle, its air admission hole diameter is by following dimensioned, to PY30 and with upper nozzle, its air admission hole diameter, also can suitably increase air admission hole quantity.
Concrete, in the present embodiment, PY15 shower nozzle mixing nozzle 8 has the air admission hole 10 that 3 diameters are 3mm, regulating sleeve 6 also has the regulating the qi flowing in the channels hole 11 that 3 diameters are 3mm.In use, regulate the air inflow of air admission hole if want, rotatable regulating sleeve 6, the relative position changing regulating the qi flowing in the channels hole 11 and air admission hole 10 carrys out adjusting air inflow quantity to PY15 shower nozzle, thus changes the air entrainment of shower nozzle jet, and then changes the atomizing effect of shower nozzle.
Mixing nozzle 8 outlet opening can prevent greatly the inwall of jet impulse mixing nozzle 8 than nozzle body 5 outlet opening, causes mixing nozzle 8 inside to produce negative pressure cavity; In the present embodiment nozzle body 5 outlet opening and mixing nozzle 8 outlet opening between distance L and the aperture A of air admission hole can ensure that jet can entrainment more air in negative pressure cavity, form the power stream of gas-liquid two-phase mixing.
Droplet distribution figure as shown in Figure 3, the test shower nozzle chosen is PY15 shower nozzle, nozzle diameter is 6mm, the rated pressure of PY15 shower nozzle is generally 300kPa, the operating pressure that this test is selected is 230 kPa, the irrigation water distribution map of common shower nozzle is shown in accompanying drawing 3, and according to the single droplet distribution measured, the combination uniformity maximum calculating shower nozzle is 63%.
According to same experimental condition, test the impact driven sprinkler installing two phase flow atomization aeration nozzle additional, effectively improve the precipitation in stage casing, sprinkler territory, therefore the water distribution of shower nozzle also improves, by the water distribution of single spraying head, the combination uniformity maximum calculating shower nozzle is 67%, but after aeration, sprinkler pattern range reduces 1m nearly.Result of the test shows, and improves jet flow characteristic, can improve the irrigation uniformity under shower nozzle low pressure, but can reduce sprinkler pattern range by two phase flow atomization aeration nozzle aeration.
Claims (8)
1. a two phase flow atomization aeration nozzle, is characterized in that: described two phase flow atomization aeration nozzle comprises nozzle body (5), regulating sleeve (6), lock sleeve (7) and mixing nozzle (8); Described mixing nozzle (8) is fixedly connected on nozzle body (5) outside by screw thread; Described regulating sleeve (6) is sleeved on the outside of mixing nozzle (8); Described lock sleeve (7) is fixedly connected on mixing nozzle (8) outside by screw thread, to compress regulating sleeve (6), prevents regulating sleeve (6) from sliding.
2. a kind of two phase flow atomization aeration nozzle according to claim 1, it is characterized in that, described nozzle body (5) and mixing nozzle (8) all adopt convergent taper hole shape, and nozzle body (5) is concentric with the outlet opening of mixing nozzle (8).
3. a kind of two phase flow atomization aeration nozzle according to claim 1, it is characterized in that, described regulating sleeve (6) inner side is provided with two sealing rings, and sealing ring is built with the gap between sealing ring (9) sealing regulating sleeve (6) and mixing nozzle (8).
4. a kind of two phase flow atomization aeration nozzle according to claim 1, it is characterized in that, described mixing nozzle (8) offers several air admission holes (10) near nozzle body (5) one end side; Described regulating sleeve (6) offers several regulating the qi flowing in the channels holes (11), the position of regulating the qi flowing in the channels hole (11) need ensure to assemble rear air admission hole (10) and regulating the qi flowing in the channels hole (11) UNICOM.
5. a kind of two phase flow atomization aeration nozzle according to claim 1, it is characterized in that, described nozzle body (5) outlet opening diameter is d, and the outlet opening diameter of mixing nozzle (8) is D, then
; With the increase of nozzle body (5) diameter d,
value increases, particularly, as d≤8mm,
, when
time,
.
6. a kind of two phase flow atomization aeration nozzle according to claim 5, it is characterized in that, the distance between the outlet opening of described nozzle body (5) outlet opening and mixing nozzle (8) is L, and
.
7. a kind of two phase flow atomization aeration nozzle according to claim 1, it is characterized in that, air admission hole (10) quantity on described mixing nozzle (8) is greater than 3, circumferentially uniform; The aperture of air admission hole (10) is A, when operating pressure at sprinkler is lower,
, when operating pressure is higher, the quantity in tonifying Qi hole suitably can be increased, tonifying Qi hole
.
8. an impact driven sprinkler, is characterized in that, described impact driven sprinkler comprises the two phase flow atomization aeration nozzle as described in any one of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510174084.5A CN104815773B (en) | 2015-04-14 | 2015-04-14 | A kind of two phase flow is atomized aeration nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510174084.5A CN104815773B (en) | 2015-04-14 | 2015-04-14 | A kind of two phase flow is atomized aeration nozzle |
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| Publication Number | Publication Date |
|---|---|
| CN104815773A true CN104815773A (en) | 2015-08-05 |
| CN104815773B CN104815773B (en) | 2017-09-05 |
Family
ID=53726390
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|---|---|---|---|
| CN201510174084.5A Active CN104815773B (en) | 2015-04-14 | 2015-04-14 | A kind of two phase flow is atomized aeration nozzle |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105562232A (en) * | 2015-12-11 | 2016-05-11 | 中国航空工业集团公司西安飞机设计研究所 | Two nozzles capable of adjusting liquid flow |
| CN105731080A (en) * | 2016-04-07 | 2016-07-06 | 河南理工大学 | Bi-directionally adjusted multipurpose vortex flow swirler |
| CN105964436A (en) * | 2016-05-30 | 2016-09-28 | 江苏大学 | Multifunctional low-pressure spray irrigation nozzle |
| CN106861960A (en) * | 2016-12-26 | 2017-06-20 | 包光华 | A kind of internal-mixing steam atomization nozzle |
| CN107008123A (en) * | 2017-05-27 | 2017-08-04 | 山西晋明通环保科技有限公司 | It is a kind of to be used to improve the spray nozzle device of plasma gas supply |
| CN107262302A (en) * | 2017-07-06 | 2017-10-20 | 南京航空航天大学 | A kind of atomizer |
| CN107537706A (en) * | 2017-08-25 | 2018-01-05 | 江苏露水河人造板有限公司 | A kind of spray valve and spraying system |
| CN107930883A (en) * | 2018-01-24 | 2018-04-20 | 深圳市山水乐环保科技有限公司 | A kind of micro-nano atomising device of liquid and method |
| CN107941461A (en) * | 2018-01-09 | 2018-04-20 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of device calculated jet stream and hold tolerance under the arm |
| CN107999297A (en) * | 2018-01-24 | 2018-05-08 | 深圳市山水乐环保科技有限公司 | Plurality of liquid is pre-mixed micro-nano atomising device and method |
| TWI634952B (en) * | 2017-08-18 | 2018-09-11 | 鴻安國際興業有限公司 | Atmospheric spray gun tip and the spray gun |
| CN108999993A (en) * | 2017-06-06 | 2018-12-14 | 邓鸣镛 | water economizer |
| CN109909086A (en) * | 2018-12-25 | 2019-06-21 | 江苏大学 | A kind of biphase gas and liquid flow atomizer and its design method |
| CN110237951A (en) * | 2019-04-11 | 2019-09-17 | 浙江花园新能源有限公司 | A kind of electrolytic copper foil pot for smelted copper |
| CN112371377A (en) * | 2020-10-27 | 2021-02-19 | 湖北山石智能科技有限公司 | Plant protection unmanned aerial vehicle's hydrojet head |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105562232A (en) * | 2015-12-11 | 2016-05-11 | 中国航空工业集团公司西安飞机设计研究所 | Two nozzles capable of adjusting liquid flow |
| CN105731080B (en) * | 2016-04-07 | 2017-10-27 | 河南理工大学 | A kind of bidirectional modulation uses vortex flow pipe cyclone |
| CN105731080A (en) * | 2016-04-07 | 2016-07-06 | 河南理工大学 | Bi-directionally adjusted multipurpose vortex flow swirler |
| CN105964436A (en) * | 2016-05-30 | 2016-09-28 | 江苏大学 | Multifunctional low-pressure spray irrigation nozzle |
| CN105964436B (en) * | 2016-05-30 | 2018-08-21 | 江苏大学 | A kind of multifunctional low-voltage sprinkling irrigation sprinkler head |
| CN106861960A (en) * | 2016-12-26 | 2017-06-20 | 包光华 | A kind of internal-mixing steam atomization nozzle |
| CN107008123A (en) * | 2017-05-27 | 2017-08-04 | 山西晋明通环保科技有限公司 | It is a kind of to be used to improve the spray nozzle device of plasma gas supply |
| CN108999993A (en) * | 2017-06-06 | 2018-12-14 | 邓鸣镛 | water economizer |
| CN107262302A (en) * | 2017-07-06 | 2017-10-20 | 南京航空航天大学 | A kind of atomizer |
| CN107262302B (en) * | 2017-07-06 | 2019-01-29 | 南京航空航天大学 | A kind of atomizer |
| US11090663B2 (en) | 2017-08-18 | 2021-08-17 | Hong Ann Tool Industries Co., Ltd. | Head of blow gun that blows a large amount of air |
| TWI634952B (en) * | 2017-08-18 | 2018-09-11 | 鴻安國際興業有限公司 | Atmospheric spray gun tip and the spray gun |
| CN107537706A (en) * | 2017-08-25 | 2018-01-05 | 江苏露水河人造板有限公司 | A kind of spray valve and spraying system |
| CN107941461A (en) * | 2018-01-09 | 2018-04-20 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of device calculated jet stream and hold tolerance under the arm |
| CN107999297A (en) * | 2018-01-24 | 2018-05-08 | 深圳市山水乐环保科技有限公司 | Plurality of liquid is pre-mixed micro-nano atomising device and method |
| CN107930883A (en) * | 2018-01-24 | 2018-04-20 | 深圳市山水乐环保科技有限公司 | A kind of micro-nano atomising device of liquid and method |
| CN109909086A (en) * | 2018-12-25 | 2019-06-21 | 江苏大学 | A kind of biphase gas and liquid flow atomizer and its design method |
| US11400468B2 (en) | 2018-12-25 | 2022-08-02 | Jiangsu University | Gas-liquid two-phase flow atomizing nozzle |
| CN110237951A (en) * | 2019-04-11 | 2019-09-17 | 浙江花园新能源有限公司 | A kind of electrolytic copper foil pot for smelted copper |
| CN112371377A (en) * | 2020-10-27 | 2021-02-19 | 湖北山石智能科技有限公司 | Plant protection unmanned aerial vehicle's hydrojet head |
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