CN102389866A - Backwash-type fountain root-irrigation irrigator - Google Patents
Backwash-type fountain root-irrigation irrigator Download PDFInfo
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- CN102389866A CN102389866A CN2011102045588A CN201110204558A CN102389866A CN 102389866 A CN102389866 A CN 102389866A CN 2011102045588 A CN2011102045588 A CN 2011102045588A CN 201110204558 A CN201110204558 A CN 201110204558A CN 102389866 A CN102389866 A CN 102389866A
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Abstract
The invention discloses a backwash-type fountain root-irrigation irrigator, which is formed by combining a cover with a core of the irrigator through a thread, wherein the center above the cover is provided with a water inlet; ventilation water guide holes are distributed around the cover; the core of the irrigator is a hollow circular tube with a partition plate; helical tooth labyrinth channels are distributed on the outer wall of the circular tube; the helical tooth labyrinth channels are provided with a filter screen and a water outlet; the partition plate is arranged between the filter screen and the water outlet; and the upper end and the lower end of the circular tube are provided with external threads matched with the cover. Under the normal condition, the cover is in driving fit with the thread of the upper end of the core of the irrigator; water flow enters the interior of the core from the water inlet, enters the helical tooth labyrinth channels after being filtered through the filter screen for energy dissipation, and outflows from the core through the water outlet. When the irrigator is blocked, the core of the irrigator is inverted, and the cover is screwed down with the thread of the lower end of the irrigator, thus, the water flow inflows from the water outlet to wash out the channels, and outflows from the filter screen to perform a backwash function.
Description
Technical field
The invention belongs to agricultural economy woods irrigation technique field, drought-hit area, relate to a kind of fountain root irrigation machine, particularly a kind of back flush type fountain root irrigation machine.
Background technology
When greatly developing modern water-saving irrigation, it is widely acknowledged that sub-irrigation (like sub-irrigation and drip irrigation) is the technology of water-saving, but the blockage problem of douche is to hinder drip irrigation technique to use the maximum bottleneck with development always.Press the plugging reason classification, the caused chemistry of indissoluble salt that has the physics that is caused by solid particle to stop up, generated by chemical reaction stops up and is stopped up by the biology that microbial activities and growth cause.There are some researches show that the immediate cause that douche stops up is migration rule and the deposition characteristics of various forms blocking medium in douche slight curves runner, handle that the douche runner stops up and still can't eliminate even if fully utilize various physico-chemical processes.In order to prevent the obstruction of douche, except water quality is handled, improve outside the douche flow passage structure, design a kind of structure that can wash the douche runner, also be to improve douche to stop up one of effective way.
The applicant has submitted following patent application to national patent administrative department respectively in research process:
1, a kind of root-irrigation method of underground artesian spring (application number: 200810150395.8), proposed the new ideas that the spring root is irritated, and made a kind of simple assistant's douche that is applicable to trees; To be that the water that the microtubule of 4mm flows out imports crop root via assistant's douche by diameter; Not only overcome the shortcoming of ground and underground drip irrigation mode, hollow billet is increased to 20 years by 5-8 service life, and moisture is directly added to the crop root position; Realization is changed to irrigated crop by irrigation soils; Reduced the obstruction of evaporation from land and douche, improved the utilization ratio of pouring water, also do not formed a kind of spring root truly at that time and irritate product.
2, a kind of threaded labyrinth flow channel type formula fountain root irrigation machine (application number: 201010156199.9); Screw-type labyrinth flow-path, water inlet, flushing sluice and ventilation water guide mouth are integrated in one, are applicable to that the soil of various different soil properties carries out the filling of spring root, when soil water permeability is strong; Water through delivery port all infiltrates; When the soil water permeability difference, the water that has little time to infiltrate flows out to get into through the ventilation aqueduct and oozes the pond, reaches two kinds of irrigation methods thus and combines; To guarantee that moisture all gets into crop root, the irrigation water utilization ratio is high.The long discharge section area of inner douche runner is big; Threaded labyrinth runner center line length overall 1500mm, minimum widith are 2mm; And in the past labyrinth flow-path water dropper minimum widith at 0.5-1.2mm; Runner center line length overall is about 100mm, and threaded labyrinth runner fluidised form index is less than 0.5, and energy dissipating is effective with turbulent flow.It is simple in structure, has the characteristics of root filling and spring; Compare with the pipeline that is exposed to ground, brought up to 20 year or more by 3-5 service life, and cost reduces more than 20%.
3, a kind of adjustable-pressure fountain root irrigation machine (application number: 201010156210.1); This adjustable-pressure fountain root irrigation machine comprises a pipe; The circular ring type labyrinth flow-path is arranged on the tube wall of pipe, water inlet, the husky hole of row and ventilation water guide mouth are arranged on the pipe, water inlet has screen pack with arranging in the husky hole; Water inlet and the import of circular ring type labyrinth flow-path are connected, and are distributed with low pressure delivery mouth, the middle extrusion mouth of a river and the high-pressure outlet of being regulated the rubber ring sealing by pressure at the circular ring type labyrinth flow-path.Its runner is long and discharge section area is big; Runner main channel minimum widith is 2mm; Rotation pressure is regulated rubber ring; Make the delivery port of pressure adjusting rubber ring circular hole and a certain position overlapping, just can open needed pressure delivery port, and then realize that same douche obtains the effect of same traffic under different pressures.
4, a kind of helical teeth labyrinth flow-path fountain root irrigation machine (application number: 201010208686.5); This helical teeth labyrinth wide-passage type water filler for filling water into fountain from bottom comprises: the pipe at the bottom of the hollow belt has the wide runner in helical teeth labyrinth on the outer tube wall of pipe; Water inlet and ventilation water guide mouth are arranged at pipe top; Be provided with the runner intake screen in the water inlet, water inlet is connected through the wide runner of runner import and helical teeth labyrinth, is provided with slow pool in said flow field end, stays pool and delivery port; Said flow field end is communicated with through runner exit and said slow pool; Slow pool and connection in the pool, the internal cavities of said pipe at the bottom of the pool is by said hollow belt forms, and the bottom of said pipe is provided with mesh and forms delivery port.Its flow is big, performance of anti-blockage is high.
Above-mentioned fountain root irrigation machine has all adopted integral structure; And the douche runner carried out optimal design, and compare with douches such as existing water dropper, flow straighteners, significantly strengthened performance of anti-blockage; But these douches still have possibility of jamming in use.Therefore, for the blockage problem that solves fountain root irrigation machine, remain that those skilled in the art pay close attention to.
Summary of the invention
In order to solve the blockage problem of douche, the objective of the invention is to, a kind of back flush type fountain root irrigation machine is provided; This douche adopts fabricated structure; When douche takes place to stop up, current are got into from former delivery port, wash away in runner and the entery and delivery port place and stop up material; Avoid the replacing of douche, reduced the irrigation system cost.
In order to realize above-mentioned task, the present invention takes following technical solution:
A kind of back flush type fountain root irrigation machine is characterized in that, is combined through screw thread by lid and douche core; Said lid top center has water inlet; Be distributed with the ventilation water-guiding hole around the lid; Described douche core is the pipe of a hollow belt dividing plate, is distributed with the helical teeth labyrinth flow-path on the circular tube external wall, and filter screen and delivery port are arranged on the helical teeth labyrinth flow-path; Said dividing plate is arranged between filter screen and the delivery port, and pipe has the external screw thread that matches with lid in two ends up and down.
Back flush type fountain root irrigation machine of the present invention also comprises a matching used sleeve, and described sleeve two ends are penetrating, and sleeve diameter equals the external diameter of lid, and the douche core is inserted in the sleeve, and integral body is embedded in underground use.Avoid root intrusion and negative pressure to inhale mud, reduce the generation of stopping up.
Back flush type fountain root irrigation machine of the present invention; Micro-irrigation emitter different from the past adopts fabricated structure, and water inlet and ventilation water guide mouth are on lid; Filter screen, helical teeth labyrinth flow-path, delivery port, dividing plate are on the douche core, and lid is connected through screw with core.Its fabricated structure and dividing plate are the keys of this douche backwashing function.The soil that this back flush type fountain root irrigation machine goes for different soil properties carries out the spring root irritates, and when soil water permeability was strong, the water through delivery port all infiltrated; When the soil water permeability difference, soil continued to infiltrate near the water that has little time to infiltrate flowed out entering through the ventilation aqueduct, had the characteristics of root filling and spring; To guarantee that moisture all gets into crop root, the irrigation water utilization ratio is high, and is simple in structure; Hydraulic performance is good; The runner anti-clogging is good, and has backwashing function, can avoid changing the cost rising that douche causes.It is underground that this back flush type fountain root irrigation machine can make pipeline all be embedded in, and compares with being exposed to surface duct, and improve service life greatly.
Description of drawings
Fig. 1 is a back flush type fountain root irrigation machine structural representation of the present invention; Wherein, Fig. 1 a is a decomposing schematic representation, and Fig. 1 b is whole profile.Being labeled as among the figure: 1, lid, 2, the douche core, 3, water inlet, 4, the ventilation water-guiding hole, 5, water-stop sheet, 6, runner, 7, filter screen, 8, delivery port, 9, the external screw thread on the douche core, 10, the internal thread on the lid.
Fig. 2 is a back flush type fountain root irrigation machine backwash principle schematic of the present invention.
Fig. 3 is a back flush type fountain root irrigation machine pressure flow graph of relation of the present invention, and wherein abscissa is pressure (m), and ordinate is flow (L/h).
Fig. 4 is the flowpath pressure distribution map.
Fig. 5 is the runner speed vector figure, and Fig. 5 a is the bulk velocity distribution map, and Fig. 5 b is the local hodograph that amplifies.
The specific embodiment that provides below in conjunction with accompanying drawing and inventor further specifies the present invention.
The specific embodiment
Like Fig. 1, present embodiment provides a kind of back flush type fountain root irrigation machine, and this douche is a fabricated structure, comprises lid 1, douche core 2.Lid 1 is in the same place through being threaded with douche 2 cores, and the top center of lid 1 has water inlet 3, and 2 ventilation water-guiding holes 4 are arranged around the lid 1.Douche core 2 is pipes of a hollow belt dividing plate 5, is distributed with helical teeth labyrinth flow-path 6 on the circular tube external wall, filter screen 7, and delivery port 8, dividing plate 5 are between filter screen 7 and delivery port 8, and the pipe upper and lower side all has the screw thread 9 that matches with lid 1.
As shown in Figure 2; The back flush type fountain root irrigation machine operation principle of present embodiment is: under the normal condition; The threaded closure of the upper end of lid 1 and douche core 2, current are from the inside of water inlet 1 entering douche core 2, because the existence of water-stop sheet 5; Current get into 6 energy dissipatings of helical teeth labyrinth flow-path after filter screen 7 filters, flowed out in douche core 2 by delivery port 8.When the back flush type fountain root irrigation machine takes place to stop up, douche core 2 is inverted, the screwed of lid 1 and douche core 2 lower ends, current flow into from delivery port 8 and wash away helical teeth labyrinth flow-path 6, flow out from filter screen 7, play backwashing function.In actual use, soil continued to irrigate near unnecessary current can import through ventilation water-guiding hole 4.
Said douche runner is a helical teeth shape labyrinth flow-path, and the runner total length is 306mm, and the runner beam overall is 3.5mm, tooth depth 1mm, space width 3.8mm, the dark 2mm of runner.When pressure was 10m, the flow of delivery port 8 was 7L/h.This helical teeth shape labyrinth flow-path cross-section of river is big, can effectively reduce the probability of happening of obstruction.
In the present embodiment, the length of douche core 2 is 78mm, external diameter 32.5mm, and wall thickness 3.2mm is enclosed with the plastic peel that a layer thickness is 2mm in addition on douche core 2 outer walls.
Helical teeth shape labyrinth flow-path 6 total lengths are 306mm, and the runner beam overall is 3.5mm, tooth depth 1mm, space width 3.8mm, the dark 2mm of runner.
The screw thread at douche core two ends about in the of 2 is identical, and pitch is 2.6mm, and the pitch cross section is a square.
The thickness of dividing plate 5 is 3mm, because the iris action of dividing plate 5, after current were got into by water inlet 8, water level was raised, and gets into helical teeth shape labyrinth flow-path 6 from filter screen 7.
The external diameter of lid 1 is 50mm, and it is that the microtubule of 4mm is connected that 2 ventilation water-guiding holes 4 are used for diameter.
Back flush type fountain root irrigation machine of the present invention; Also comprise a matching used sleeve (not shown), these sleeve two ends are penetrating, and sleeve diameter equals lid 1 external diameter (50mm); The douche core 2 that back flush type spring root is irritated inserts in this sleeve; Integral body is embedded in underground use, avoids root intrusion and negative pressure to inhale mud, reduces the generation of stopping up.
The applicant adopts CFD analysis software Fluent, and the helical teeth shape labyrinth flow-path 6 that back flush type spring root is irritated carries out the single-phase flow analytical calculation, obtains the flow of helical teeth labyrinth flow-path 6 under different pressures; And its pressure flow relation curve of match is as shown in Figure 3; The fluidised form index of this helical teeth labyrinth flow-path 6 is 0.516, explains that current are in turbulent condition, and effect of energy dissipation is good; When rated pressure was 10m, flow was 7L/h.
Referring to Fig. 4, the applicant can know that through observing pressure-plotting when helical teeth labyrinth flow-path 6 import step pressure were 10m, pressure reduced along the orientation of helical teeth labyrinth flow-path gradually, is kept to-1.5 * 10 to outlet pressure
3Pa is similar to atmospheric pressure.
Referring to Fig. 5 a and Fig. 5 b, the size by flow velocity in the helical teeth labyrinth flow-path 6 can be divided into main flow area and eddy flow district significantly, and flow velocity is higher in the main flow area; Reach 2.15～3.04m/s; Eddy flow district flow velocity is lower, is 0.64～0.15m/s probably, is the zone that results in blockage the most easily.But because width of flow path is bigger, main flow area is broader, makes current that bigger sediment carrying capacity arranged, and can reduce the probability of happening that stops up relatively.
Claims (9)
1. a back flush type fountain root irrigation machine is characterized in that, is combined through screw thread by lid (1) and douche core (2); Said lid (1) top center has water inlet (3); Lid (1) is distributed with ventilation water-guiding hole (4) on every side; Described douche core (2) is the pipe of a hollow belt dividing plate (5), is distributed with helical teeth labyrinth flow-path (6) on the circular tube external wall, and filter screen (7) and delivery port (8) are arranged on the helical teeth labyrinth flow-path (6); Said dividing plate (5) is arranged between filter screen (7) and the delivery port (8), and pipe two ends up and down has the external screw thread (9) that matches with lid (1).
2. back flush type fountain root irrigation machine as claimed in claim 1; It is characterized in that the length of described douche core (2) is 78mm, external diameter 32.5mm; Wall thickness 3.2mm also is enclosed with the plastic peel that a layer thickness is 2mm on the outer wall of douche core (2).
3. back flush type fountain root irrigation machine as claimed in claim 1 is characterized in that, said helical teeth shape labyrinth flow-path (6), total length are 306mm; Beam overall is 3.5mm, tooth depth 1mm, space width 3.8mm; Dark 2mm, when pressure was 10m, the flow of delivery port (8) was 7L/h.
4. back flush type fountain root irrigation machine as claimed in claim 1 is characterized in that, the rectangle that is shaped as 9 1.5 * 2mm of said filter screen (7).
5. back flush type fountain root irrigation machine as claimed in claim 1 is characterized in that, said delivery port (8) is shaped as the rectangle of 1.8 * 2mm.
6. back flush type fountain root irrigation machine as claimed in claim 1 is characterized in that, the external screw thread (9) at said douche core (2) two ends is identical, and pitch is 2.6mm, and the pitch cross section is a square.
7. back flush type fountain root irrigation machine as claimed in claim 1 is characterized in that, said dividing plate (5) thickness is 3mm.
8. back flush type fountain root irrigation machine as claimed in claim 1 is characterized in that, said ventilation water-guiding hole (4) is 2, is used to connect the microtubule that diameter is 4mm.
9. back flush type fountain root irrigation machine as claimed in claim 1 is characterized in that, also comprises a matching used sleeve; Described sleeve two ends are penetrating; Sleeve diameter equals the external diameter of lid (1), and douche core (2) is inserted in the described sleeve, and integral body is embedded in underground use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102045588A CN102389866B (en) | 2011-07-21 | 2011-07-21 | Backwash-type fountain root-irrigation irrigator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102045588A CN102389866B (en) | 2011-07-21 | 2011-07-21 | Backwash-type fountain root-irrigation irrigator |
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| Publication Number | Publication Date |
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| CN102389866A true CN102389866A (en) | 2012-03-28 |
| CN102389866B CN102389866B (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011102045588A Expired - Fee Related CN102389866B (en) | 2011-07-21 | 2011-07-21 | Backwash-type fountain root-irrigation irrigator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111383A (en) * | 2012-10-05 | 2013-05-22 | 西北农林科技大学 | Buried intermittent water supply type bubbled root irrigation emitter |
| CN107318593A (en) * | 2017-08-22 | 2017-11-07 | 中国农业大学 | Combined press force compensating douche between a kind of washable pipe |
| CN109692762A (en) * | 2019-01-25 | 2019-04-30 | 九牧厨卫股份有限公司 | A kind of fuse and particle spray water installations by spraying |
| CN109691380A (en) * | 2017-10-22 | 2019-04-30 | 新疆天业节水灌溉股份有限公司 | A kind of flow adjustable pressure compensation type emitter |
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| CN2423035Y (en) * | 2000-02-29 | 2001-03-14 | 马荣立 | Water dropper core for drip irrigation pipe |
| CN201385000Y (en) * | 2009-04-03 | 2010-01-20 | 傅海涛 | Demountable dripper and drip irrigation pipe with same |
| CN201552078U (en) * | 2009-11-30 | 2010-08-18 | 杜道兵 | Combined drop irrigation pipeline |
| CN101850309A (en) * | 2010-06-25 | 2010-10-06 | 西北农林科技大学 | Helical labyrinth wide-passage type water filler for filling water into fountain from bottom |
| CN201720143U (en) * | 2010-06-24 | 2011-01-26 | 杭州奥特普灌溉设备有限公司 | Dual-flow cylindrical dripper of drip irrigation pipe |
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2011
- 2011-07-21 CN CN2011102045588A patent/CN102389866B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2423035Y (en) * | 2000-02-29 | 2001-03-14 | 马荣立 | Water dropper core for drip irrigation pipe |
| CN201385000Y (en) * | 2009-04-03 | 2010-01-20 | 傅海涛 | Demountable dripper and drip irrigation pipe with same |
| CN201552078U (en) * | 2009-11-30 | 2010-08-18 | 杜道兵 | Combined drop irrigation pipeline |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111383A (en) * | 2012-10-05 | 2013-05-22 | 西北农林科技大学 | Buried intermittent water supply type bubbled root irrigation emitter |
| CN103111383B (en) * | 2012-10-05 | 2015-09-09 | 西北农林科技大学 | A kind of buried intermittent water application formula fountain root irrigation machine |
| CN107318593A (en) * | 2017-08-22 | 2017-11-07 | 中国农业大学 | Combined press force compensating douche between a kind of washable pipe |
| CN109691380A (en) * | 2017-10-22 | 2019-04-30 | 新疆天业节水灌溉股份有限公司 | A kind of flow adjustable pressure compensation type emitter |
| CN109692762A (en) * | 2019-01-25 | 2019-04-30 | 九牧厨卫股份有限公司 | A kind of fuse and particle spray water installations by spraying |
| CN109692762B (en) * | 2019-01-25 | 2024-02-27 | 九牧厨卫股份有限公司 | Spraying core and particle spraying water device |
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| CN102389866B (en) | 2013-11-20 |
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