CN102179322B - Rainfall simulation variable-rate sprinkler of flexible spray nozzle - Google Patents
Rainfall simulation variable-rate sprinkler of flexible spray nozzle Download PDFInfo
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- CN102179322B CN102179322B CN2011101238456A CN201110123845A CN102179322B CN 102179322 B CN102179322 B CN 102179322B CN 2011101238456 A CN2011101238456 A CN 2011101238456A CN 201110123845 A CN201110123845 A CN 201110123845A CN 102179322 B CN102179322 B CN 102179322B
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- flexible sleeve
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Abstract
The invention discloses a rainfall simulation variable-rate sprinkler of a flexible spray nozzle, which comprises a spray pipe connected with a pipeline, wherein an outlet of the spray pipe is connected with a flexible sleeve as the spray nozzle, one end of the flexible sleeve is fixed on the outer wall of the sprinkler by using a fixing device, and the tail end at the other end of the flexible sleeve is longer than the tail end of the sprinkler, or the flexible sleeve is sheathed on an original tapered rigid spray nozzle for realizing variable-rate sprinkling of the flexible spray nozzle. The flexible spray nozzle is made of elastic material, when the pressure at the inlet of the sprinkler is increased, the flexible spray nozzle is expanded along with the increase in the water pressure on the inner wall, so that the area of efflux is increased, and the diameter of raindrops is increased accordingly. When the pressure at the inlet of the sprinkler is reduced, the flexible spray nozzle is contracted along with drop in the water pressure on the inner wall, so that the area of efflux is reduced, and the diameter of the raindrops is reduced accordingly. The structure is simple, scientific and reasonable, the weight is light, the cost is low, and the rainfall simulation variable-rate sprinkler can be used for an artificial rainfall simulation system and a precise irrigation system for farmland and garden landscapes, as well as a fire-extinguishing rainfall system.
Description
Technical field
The present invention relates to a kind of shower nozzle, particularly a kind of rainfall simulation variable sprayer of flexible nozzle.
Background technology
The various sprinklers of using in sprinkling system such as existing agriculture sprinkling irrigation, artificially-simulated rainfall, fire-fighting fire extinguishing, spray medicine and the commercial production and the shower nozzle of injector, as shown in Figure 1, form by shower nozzle 2 and nozzle 1 grade; Nozzle 1 is installed on the shower nozzle 2; Its nozzle 1 is to be made by rigid material with shower nozzle 2 mostly; Although the nozzle of different shower nozzles 1 has different outlet shapes and size, fix for a kind of its exit area of fixing shower nozzle, do not change with the shower nozzle inlet pressure; When pressure increases; Liquid-drop diameter and range are less with the pressure increasing degree, and the fogging degree increase, reduce liquid-drop diameter sometimes on the contrary.But in some actual conditions, need be under the situation of not changing shower nozzle, regulate through pressure and to control shower nozzle drop and range marked change with the variation of expulsion pressure, like this can big time saver with practice thrift cost.Closer simulating nature rainfall raindrop situation, fire-fighting system can increase or reduce range and raindrop size, water-saving spray system automatically according to intensity of a fire size position and can the block-shaped automatic adjusting sprinkler pattern range in base area avoid spraying etc. with Louing like the rain making simulation system.
In the realization technology of existing variable spray; There is a kind of shower nozzle that jet size is different to be installed on many rows pipeline arranged side by side; Can control as required during work wherein that a pipeline works independently or several pipelines are worked simultaneously realizes variable spray; As be used for the irrigation sprinkler that agricultural is accurately irrigated, but this method cost is high; Second kind is through the additional next exit area of nozzle that changes of certain mechanical device of installing in good time; Developed a kind of device that becomes exit area of nozzle like (1998) such as the King of the U.S., Bradley A.; Installation is a kind of in nozzle can be with the flexible conical head of pressure, and when shower nozzle water inlet pressure increased, conical head moved to nozzle exit; Block nozzle, exit area of nozzle is reduced.When pressure reduced, conical head increased exit area of nozzle away from nozzle.The long-pending variation according to pressure in jet area is respective change, and vertebra shape head moves control and controlled by magnetic valve.The shortcoming of this method is that adjusting device is installed in shower nozzle inside, has increased jet resistance, and the pressure loss is bigger, be unfavorable for energy-conservation, and control system complex, cost is high.Yuan Shouqi, Wei Yangyang etc. (2010) have studied a kind of reed-type special-shaped nozzle impact driven sprinkler that is used for spray irrigation system; At the nozzle exit of this variable sprayer a water fender and spring have been installed; The current special-shaped nozzle device of flowing through, the deflection of spring is along with incoming-flow pressure size respective change.When incoming-flow pressure was stablized before the special-shaped nozzle device, current remained unchanged to the active force of water fender, and the outlet is constant; Water flow pressure increases, and incoming flow increases the active force of water fender, and spring receives downward active force and is compressed, and water fender moves down, and the jet area increases; Water flow pressure diminishes, and corresponding outlet diminishes.The long-pending variation according to pressure is respective change in the jet area.This method has replaced electromagnetic method control system by spring, though simplified the control system, has reduced cost, because adjusting device also is mounted in shower nozzle inside, has increased the pressure loss of shower nozzle jet, and power saving still fails to solve.
Summary of the invention
Defective or deficiency to above-mentioned variable sprayer exists the objective of the invention is to, and a kind of rainfall simulation variable sprayer of novel flexible nozzle is provided, and the exit area of nozzle of the rainfall simulation variable sprayer of this flexible nozzle can change with pressure and change.
In order to realize above-mentioned task, the present invention takes following technical solution:
A kind of rainfall simulation variable sprayer of flexible nozzle; Comprise the jet pipe that is connected with pipeline; It is characterized in that; The outlet of described jet pipe is connected with the flexible sleeve as nozzle, and this flexible sleeve one end is fixed in fixture on the outer wall of shower nozzle, and the end of the flexible sleeve other end is terminal longer than shower nozzle.
Another kind of technical solution of the present invention is:
A kind of rainfall simulation variable sprayer of flexible nozzle; Comprise rigidity nozzle and jet pipe; It is characterized in that the profile of described rigidity nozzle is taper, on the external diameter of rigidity nozzle, is with flexible sleeve; This flexible sleeve one end is fixed in fixture on the external diameter of jet pipe, and the end of the flexible sleeve other end is longer than the end of nozzle.
The rainfall simulation variable sprayer of flexible nozzle of the present invention, on the basis of original rainfall simulation shower nozzle, install additional can be for convenience detach flexible nozzle, realize to become raindrop and execute rain.Flexible sleeve is selected rational elastomeric material manufacturing for use, and sets up flexible boot mouth degrees of expansion and inlet pressure relational model, and then sets up the relational model of raindrop diameter and inlet pressure, makes it to reach the requirement that the rainfall system controls the raindrop diameter in real time.
The rainfall simulation variable sprayer of flexible nozzle of the present invention has overcome existing rigidity nozzle shower nozzle raindrop diameter with the stationary exit area of section and has reduced on the contrary with the pressure increase, can't realize the sprinkling requirement that the raindrop diameter increases with pressure.The present invention introduces the variable technology in the rainfall simulation system, adopts flexible sleeve as the variable nozzle, can realize that then raindrop diameter and rainfall intensity increase with hydraulic pipeline and shower nozzle inlet pressure, thereby improves the simulation accuracy of rainfall system.Also do not appear in the newspapers in this artificially-simulated rainfall system at home and abroad.
Description of drawings
Fig. 1 is the single injector nozzle structure sketch map of original structure form, and wherein Fig. 1 (a) is a front view, and Fig. 1 (b) is the cutaway view of Fig. 1 (a);
Fig. 2 is the rainfall simulation variable sprayer structural representation of a kind of flexible nozzle of the present invention; Wherein Fig. 2 (a) is a front view; Fig. 2 (b) is the side view of Fig. 2 (a), and Fig. 2 (c) is the cutaway view of Fig. 2 (a), mainly is made up of shower nozzle, flexible sleeve and fixture;
Fig. 3 is the rainfall simulation variable sprayer structural representation of another kind of flexible nozzle of the present invention; Wherein Fig. 3 (a) is a front view; Fig. 3 (b) is the cutaway view of Fig. 3 (a), mainly is made up of rigidity nozzle, shower nozzle, flexible sleeve, fixture and the screw thread that is rigidly connected;
Label among the figure is represented respectively: 1, rigidity nozzle, 2, jet pipe, 3, flexible sleeve, 4, fixture, 5, connecting thread.
Fig. 4 is a flexible nozzle know-why sketch map;
Fig. 5 is water droplet average diameter and shower nozzle diameter and jet pressure experimental result picture.
Instantiation below in conjunction with accompanying drawing and inventor provide is done further detailed description to the present invention.
The specific embodiment
The rainfall simulation variable sprayer of flexible nozzle of the present invention, its technical thought are to adopt flexible nozzle to realize the long-pending function that is respective change that changes according to pressure in variable sprayer jet area.Flexible nozzle adopts the elastomeric material that is suitable for, and when nozzle entry pressure increased, flexible nozzle increased expansion with the inwall water pressure, thereby area of efflux is increased, and the raindrop diameter increases thereupon.When nozzle entry pressure reduced, flexible nozzle shrank with the reduction of inwall water pressure, thereby area of efflux is reduced, and the raindrop diameter reduces thereupon.The rainfall simulation variable sprayer of flexible nozzle of the present invention is compared other variable sprayer technology artificially-simulated rainfall systems that is applied to preferably; Difficult point is to select rational elastomeric material for use and sets up the relational model of jet size variation and pressure, thus the rainfall simulation variable sprayer of exploitation flexible nozzle.
Referring to Fig. 2; Fig. 2 is first embodiment that the applicant provides; The rainfall simulation variable sprayer of this flexible nozzle comprises the jet pipe 2 that is connected with pipeline; The port of export of jet pipe 2 is connected with the flexible sleeve 3 as nozzle, and these flexible sleeve 3 one ends are fixed in fixture 4 on the outer wall of shower nozzle 2, and the end of flexible sleeve 3 other ends is longer slightly than shower nozzle 2 ends.
Referring to Fig. 3; Fig. 3 is another embodiment that the applicant provides; The rainfall simulation variable sprayer of this flexible nozzle comprises rigidity nozzle 1 and jet pipe 2, and the profile of rigidity nozzle 1 is taper, and flexible sleeve 3 is arranged on the external diameter of rigidity nozzle 1; These flexible sleeve 3 one ends are fixed in bayonet fixing device 4 on the external diameter of nozzle 1, and the end of flexible sleeve 3 other ends is longer slightly than the end of nozzle 1.
The preparation of flexible sleeve 3 is identical with first embodiment.
Below be the flexible nozzle know-why of the rainfall simulation variable sprayer of flexible nozzle of the present invention:
1, the flexible nozzle diameter increases and increases along with nozzle exit pressure
As shown in Figure 4, flexible nozzle diameter and nozzle exit pressure can be represented with following relational expression between the two:
P=E·△D
Wherein P is the pressure of nozzle, and D is a nozzle diameter, and E is the elastic modelling quantity of flexible material.
If the pressure that flexible nozzle receives is isotropic, establishing its stress is P
0
Relation according to the stress and strain of the mechanics of materials has P
0=E ε
So the relation of nozzle exit pressure and distortion is P=∑ P
0=∑ E ε
Because elastic modulus E is a constant, and △ D=2 ∑ ε
Then the relation of the pressure of nozzle and nozzle diameter is P=E △ D
2, the relation between nozzle diameter and the raindrop diameter
Have through the knowledge about jet in hydromechanical, the relative velocity of the average diameter of water droplet and jet and surrounding air is inversely proportional to.
P=0.5·ρ·π·R
2·υ
2
Wherein P is a pressure, and ρ is the density of water, and R is the radius of nozzle, and υ is the initial velocity of jet.
Here be located under the calm condition, υ is the relative velocity of jet and surrounding air.
So under the certain situation of jet pressure P, relative velocity υ and the R relation of being inversely proportional to.Then the average diameter of water droplet and spout radius R are proportional, so under the certain situation of jet pressure P, with the increase of nozzle diameter, the average diameter of water droplet increases.
Fig. 5 is water droplet average diameter and shower nozzle diameter and jet pressure experimental result, has reflected the relation of shower nozzle diameter with the water droplet average diameter.
The rainfall simulation variable sprayer of flexible nozzle of the present invention is simple in structure, scientific and reasonable, in light weight, and cost is low, can realize the sprinkling requirement that the raindrop diameter increases with pressure.The present invention introduces the variable technology in the rainfall system; Adopt the rainfall simulation variable sprayer of flexible nozzle of the present invention can realize that then raindrop diameter and rainfall intensity increase with hydraulic pipeline and shower nozzle inlet pressure, thereby improve the simulation accuracy of rainfall system.The accurate irrigation system that can be used for farmland and garden landscape requires to realize variable spray according to need water, also can be used for the Shi Yu system that puts out a fire.
Claims (4)
1. the rainfall simulation variable sprayer of a flexible nozzle; Comprise the jet pipe (2) that is connected with pipeline; It is characterized in that; The port of export of described jet pipe (2) is connected with the flexible sleeve (3) as nozzle, and these flexible sleeve (3) one ends are fixed on the outer wall of shower nozzle (2) with fixture (4), and the end of flexible sleeve (3) other end is terminal longer than jet pipe (2); When jet pipe (2) inlet pressure increased, flexible sleeve (3) increased expansion with the inwall water pressure, thereby area of efflux is increased, and the raindrop diameter increases thereupon; When jet pipe (2) when inlet pressure reduces, flexible sleeve (3) reduces with the inwall water pressure and shrinks, thereby area of efflux is reduced, and the raindrop diameter reduces thereupon.
2. the rainfall simulation variable sprayer of flexible nozzle as claimed in claim 1 is characterized in that, the diameter of described flexible sleeve (3) is fixed, and perhaps flexible sleeve (3) is the conical pipe that becomes diameter.
3. the rainfall simulation variable sprayer of a flexible nozzle; Comprise rigidity nozzle (1) and jet pipe (2); It is characterized in that the profile of described rigidity nozzle (1) is taper, flexible sleeve (3) is arranged on the external diameter of rigidity nozzle (1); These flexible sleeve (3) one ends are fixed on the external diameter of nozzle (1) with fixture (4), and the end of flexible sleeve (3) other end is longer than the end of nozzle (1).
4. the rainfall simulation variable sprayer of flexible nozzle as claimed in claim 3 is characterized in that, the diameter of described flexible sleeve (3) is fixed, and perhaps flexible sleeve (3) is the conical pipe that becomes diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101238456A CN102179322B (en) | 2011-05-13 | 2011-05-13 | Rainfall simulation variable-rate sprinkler of flexible spray nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101238456A CN102179322B (en) | 2011-05-13 | 2011-05-13 | Rainfall simulation variable-rate sprinkler of flexible spray nozzle |
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| Publication Number | Publication Date |
|---|---|
| CN102179322A CN102179322A (en) | 2011-09-14 |
| CN102179322B true CN102179322B (en) | 2012-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101238456A Expired - Fee Related CN102179322B (en) | 2011-05-13 | 2011-05-13 | Rainfall simulation variable-rate sprinkler of flexible spray nozzle |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513236A (en) * | 2011-12-12 | 2012-06-27 | 西北农林科技大学 | Variable-section artificial simulation rainfall sprayer made of internal elastic material |
| CN102513239B (en) * | 2011-12-29 | 2014-12-24 | 江苏大学 | Automatic outlet pressure regulating device for variable sprayer |
| CN105004657A (en) * | 2015-08-11 | 2015-10-28 | 太仓市高泰机械有限公司 | Filter screen type spraying device for raining testing machine |
| GB2545884A (en) * | 2015-11-06 | 2017-07-05 | Cambridge Consultants | Sprays |
| CN110476936A (en) * | 2019-08-12 | 2019-11-22 | 江苏大学 | A kind of Fan spray head of variable spray angle |
| CN110779857A (en) * | 2019-11-27 | 2020-02-11 | 长安大学 | A test device for being directed at bituminous mixture simulation acid rain corrodes action |
Citations (5)
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|---|---|---|---|---|
| CN2557240Y (en) * | 2002-07-22 | 2003-06-25 | 庄威 | Shower nozzle with continuous changeable water outlet area |
| US6776357B1 (en) * | 1998-10-22 | 2004-08-17 | Yosuke Naito | Showerhead |
| FR2861321A1 (en) * | 2003-10-24 | 2005-04-29 | Renault Sa | Jet nozzle for cooling and oil lubrication system, has unit that deforms elastically under force of fluid pressure, and is positioned such that it reduces outlet area of nozzle when fluid flow decreases |
| CN1627994A (en) * | 2002-02-08 | 2005-06-15 | 托罗公司(美国) | Pressure compensating drip irrigation hose |
| CN101623678A (en) * | 2009-08-11 | 2010-01-13 | 华中科技大学 | Pneumatic diaphragm type micro-droplet jetting method and pneumatic diaphragm type micro-droplet jetting device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7124964B2 (en) * | 2002-09-13 | 2006-10-24 | Quy Duc Bui | Nozzle with flow rate and droplet size control capability |
| WO2009076489A2 (en) * | 2007-12-12 | 2009-06-18 | Elkhart Brass Manufacturing Company, Inc. | Smooth bore nozzle with adjustable bore |
-
2011
- 2011-05-13 CN CN2011101238456A patent/CN102179322B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6776357B1 (en) * | 1998-10-22 | 2004-08-17 | Yosuke Naito | Showerhead |
| CN1627994A (en) * | 2002-02-08 | 2005-06-15 | 托罗公司(美国) | Pressure compensating drip irrigation hose |
| CN2557240Y (en) * | 2002-07-22 | 2003-06-25 | 庄威 | Shower nozzle with continuous changeable water outlet area |
| FR2861321A1 (en) * | 2003-10-24 | 2005-04-29 | Renault Sa | Jet nozzle for cooling and oil lubrication system, has unit that deforms elastically under force of fluid pressure, and is positioned such that it reduces outlet area of nozzle when fluid flow decreases |
| CN101623678A (en) * | 2009-08-11 | 2010-01-13 | 华中科技大学 | Pneumatic diaphragm type micro-droplet jetting method and pneumatic diaphragm type micro-droplet jetting device |
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| CN102179322A (en) | 2011-09-14 |
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Granted publication date: 20120808 Termination date: 20130513 |