CN204656772U - A kind of two phase flow atomization aeration nozzle - Google Patents
A kind of two phase flow atomization aeration nozzle Download PDFInfo
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- CN204656772U CN204656772U CN201520222256.7U CN201520222256U CN204656772U CN 204656772 U CN204656772 U CN 204656772U CN 201520222256 U CN201520222256 U CN 201520222256U CN 204656772 U CN204656772 U CN 204656772U
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- nozzle
- phase flow
- mixing
- mixing nozzle
- hole
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Abstract
The utility model discloses a kind of two phase flow atomization aeration nozzle, belong to fluid machinery technical field, involved by the utility model, two phase flow atomization aeration nozzle comprises nozzle body, regulating sleeve, lock sleeve and mixing nozzle, the port of export of nozzle body and mixing nozzle all adopts convergent taper hole shape, and nozzle body is concentric with the outlet opening of mixing nozzle; Mixing nozzle offers several air admission holes, regulating sleeve offers some adjustment holes, rotary regulating sleeve, the relative position changing adjustment hole and air admission hole can change shower nozzle air entrainment; Because nozzle of the present utility model have employed two phase flow aeration structure, can produce more preferably atomised jet effect, meanwhile, the utility model structure is simple, operates light, easily manufactures.
Description
Technical field
The utility model relates to a kind of nozzle arrangements, particularly relates to a kind of two phase flow for impact driven sprinkler atomization aeration nozzle, belongs 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.
Utility model content
The purpose of this utility model is to overcome prior art deficiency, and 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, the utility model have employed 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 diameter d,
value increases, particularly, when
time,
, 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 beneficial effects of the utility model are:
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.
The nozzle arrangements that the utility model provides 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 utility model 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 utility model is described in further detail:
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 (7)
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, when
time,
, 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
.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520222256.7U CN204656772U (en) | 2015-04-14 | 2015-04-14 | A kind of two phase flow atomization aeration nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520222256.7U CN204656772U (en) | 2015-04-14 | 2015-04-14 | A kind of two phase flow atomization aeration nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204656772U true CN204656772U (en) | 2015-09-23 |
Family
ID=54127209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520222256.7U Expired - Fee Related CN204656772U (en) | 2015-04-14 | 2015-04-14 | A kind of two phase flow atomization aeration nozzle |
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| Country | Link |
|---|---|
| CN (1) | CN204656772U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104815773A (en) * | 2015-04-14 | 2015-08-05 | 江苏大学 | Two-phase flow atomization air mixing nozzle |
| CN110237950A (en) * | 2019-04-11 | 2019-09-17 | 浙江花园新能源有限公司 | A kind of pot for smelted copper gas-liquid mixed nozzle |
| CN113210151A (en) * | 2021-01-25 | 2021-08-06 | 武汉大学 | Universal cavitation jet nozzle |
| CN114290249A (en) * | 2021-12-31 | 2022-04-08 | 湘潭大学 | Internal cooling grinding wheel |
-
2015
- 2015-04-14 CN CN201520222256.7U patent/CN204656772U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104815773A (en) * | 2015-04-14 | 2015-08-05 | 江苏大学 | Two-phase flow atomization air mixing nozzle |
| CN110237950A (en) * | 2019-04-11 | 2019-09-17 | 浙江花园新能源有限公司 | A kind of pot for smelted copper gas-liquid mixed nozzle |
| CN113210151A (en) * | 2021-01-25 | 2021-08-06 | 武汉大学 | Universal cavitation jet nozzle |
| CN114290249A (en) * | 2021-12-31 | 2022-04-08 | 湘潭大学 | Internal cooling grinding wheel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20170414 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |