CN102599036A - Oscillation pulsed drip irrigation emitter and drip irrigation device - Google Patents
Oscillation pulsed drip irrigation emitter and drip irrigation device Download PDFInfo
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- CN102599036A CN102599036A CN2012100747769A CN201210074776A CN102599036A CN 102599036 A CN102599036 A CN 102599036A CN 2012100747769 A CN2012100747769 A CN 2012100747769A CN 201210074776 A CN201210074776 A CN 201210074776A CN 102599036 A CN102599036 A CN 102599036A
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Abstract
The invention belongs to the technical field of agricultural water-saving irrigation, and relates to a drip irrigation emitter, in particular to an oscillation pulsed drip irrigation emitter and a drip irrigation device. The emitter is composed of a water inlet trough, an oscillation pulsed generator, two runners and a water outlet trough, wherein the water inlet trough is provided with a filter window, and is communicated with the oscillation pulsed generator which is communicated with the runner; and the water outlet trough is positioned at the end of the runner. A fluidic feedback oscillation technique is applied to drive the water flow to flow in the two runners intermittently, thus continuous pulse process is realized; strong turbulent fluctuation and impact water flow is formed in the runner; the anti-blocking capacity and the irrigation uniformity of the emitter are enhanced; and elastic body structures, such as rubber, plastic films and springs and the like of the drip irrigation emitter are omitted. The drip irrigation emitter provided by the invention has the characteristics of being simple in structure and strong in reliability and durability, and can be widely applied to the demands of irrigation in field crops, vegetables, fruit industry and the like.
Description
Technical field
The invention belongs to the agricultural water-saving irrigation technical field, relate to drip emitter, be specifically related to a kind of oscillating impulse drip emitter and drip irrigation method.
Background technology
The pulse drip irrigation has the advantages that performance of anti-blockage is strong, uniformity of irrigation water appilcation is high, receives the extensive concern and the application of countries in the world; The pulse drip irrigation system produces the pulse current that continue through the circulation of impulse generator water storage and pulse; Its course of work generally independently form each other by two of water-filling supercharging and water outlet decompressions by the stage; Two stage Automatic Cycle are reciprocal; Make current with certain pulse frequency by the intermittent outflow of drip emitter, realize pulse drip irrigation mode.
Impulse generator is the core apparatus that the pressure flow in the drip irrigation system is become the pulse current, and existing impulse generator mostly has inflatable and a reset flexible cavity, and flexible cavity is made up of rubber, plastic diaphragms or spring elastomeric material; In the water-filling pressurization stages; Pressure flow gets into flexible cavity, and cavity begins to expand, along with press water constantly accumulation in cavity; Cavity expand into to the utmost point and prescribes a time limit; Be opened at effect lower outlets such as diaphragm or springs, the pressure flow in the cavity releases through exhalant canal rapidly, accomplishes pulsatile once; After the press water in the flexible cavity was by abrupt release, cavity recovered reset condition under elastic reaction, and delivery port is closed, and got into the next pulse process; Move in circles, form the pulse current.
Existing pulse drip irrigation is utilized the expansion of rubber, plastics, spring elastomeric material and is resetted, and realizes the purpose of pulse current; Drip irrigation system is longer general running time, and elastomeric material is easy to fatigue, even damages in long-time, high-frequency frequent back and forth running; Pulse frequency depends on the rigidity and the initial compression amount of elastomeric material; Long-play will cause elastomeric material rigidity and elastic modelling quantity to change; Elasticity attenuation, sensitivity, reliability can be in various degree decline, thereby influence the lasting operation and the use of pulse drip irrigation system; The use of elastomeric material certainly will increase the structural complexity of impulse generator, and mechanical seal property, the accuracy of manufacture, reliability and durability are proposed higher requirement.
Application number is that 97232713.4 Chinese patent " slight irrigation impulse generator " discloses a kind of impulse generator of being made up of core, pulse capsule, housing.Through the expansion savings energy of capsule, open delivery port, utilize the elastic reaction of capsule to restore to the original state, the sealing delivery port is realized the pulse drip irrigation; Application number is that 201110074154.1 Chinese patent " pulse drip irrigation system " discloses a kind of pulse valve; Form by valve body, water inlet, intake antrum, guide rod, lock body, water chamber, lock body push-and-pull spring, delivery port, control chamber, barrier film extension spring etc., through the pressure water stream promotion barrier film of intake antrum, tensile membrane extension spring; Extruding lock body push-and-pull spring; Promote the lock body and open delivery port, utilize barrier film extension spring pulling barrier film to reset, push-and-pull spring pulling lock body resets; The sealing delivery port is realized the pulse drip irrigation.
Summary of the invention
The object of the present invention is to provide a kind of simple in structurely, cost is low, and anti-blockage capability is strong, and long service life utilizes jet feedback oscillation technology to form the oscillating impulse drip emitter of pulse current.
The technical solution that the present invention takes is: a kind of oscillating impulse drip emitter; Form by intake chamber, fluidic oscillation impulse generator, runner and effluent trough; Intake chamber is provided with the filter window and is communicated with the fluidic oscillation impulse generator; The fluidic oscillation impulse generator is communicated with runner; Effluent trough is positioned at flow field end, it is characterized in that: said fluidic oscillation impulse generator is made up of impulse generator import, contraction section, diversion section, jet nozzle, the first oscillatory feedback signal functional port, the second oscillatory feedback signal functional port, the first oscillatory feedback signalling channel, the second oscillatory feedback signalling channel, fluidic spaces, the first oscillatory feedback signal input port, the second oscillatory feedback signal input port, first jet exit, second jet exit and splitter plate; The fluidic oscillation impulse generator is the impulse generator import foremost; Connect a pre-large post-small contraction section thereafter; Being a diversion section and a jet nozzle then, the first oscillatory feedback signal functional port and the second oscillatory feedback signal functional port are set respectively on the sidewall on jet nozzle both sides, is the fluidic spaces of one section pre-small post-large shape behind the jet nozzle; Splitter plate is positioned at the end of fluidic spaces; And the end of fluidic spaces is partitioned into first jet exit and second jet exit of fluidic oscillation impulse generator, and first jet exit is connected with first flow, and second jet exit is connected with second runner; The first oscillatory feedback signal input port is set on the sidewall of first jet exit; The second oscillatory feedback signal input port is set on the sidewall of second jet exit, on the wall of the first oscillatory feedback signal functional port and the first oscillatory feedback signal input port, one side, slots, be communicated with the first oscillatory feedback signal functional port and the first oscillatory feedback signal input port; Form the first oscillatory feedback signalling channel; On the wall of the second oscillatory feedback signal functional port and the second oscillatory feedback signal input port, one side, slot, be communicated with the second oscillatory feedback signal functional port and the second oscillatory feedback signal input port, form the second oscillatory feedback signalling channel II.
Runner has two; Be respectively the first flow and second runner; First flow is communicated with first jet exit of fluidic oscillation impulse generator; Second runner is communicated with second jet exit of fluidic oscillation impulse generator, and the flow passage structure form is labyrinth type, stream formula, long flow channel type or aperture runner form.
Effluent trough is positioned at the end of runner; Effluent trough has two kinds of formation schemes: first kind of scheme is that two independently effluent troughs are set; Be respectively first tank and second effluent trough; First effluent trough is communicated with first flow, and second effluent trough is communicated with second runner, forms the fluidic oscillation pulse drip emitter with two delivery ports; Second kind of scheme is that the end at two runners is provided with an effluent trough, by effluent trough the end of first flow with second runner is communicated with, and two shared outlets of runner form the fluidic oscillation pulse drip emitter with a delivery port; When making up fluidic oscillation pulse drip emitter, the effluent trough structure can be chosen one of which wantonly in two kinds of schemes.
When the present invention worked, the pressure flow in the hollow billet got into intake chamber by the filter window, gets into the fluidic oscillation impulse generator by the impulse generator import; Form jet through contraction section, diversion section and jet nozzle, jet is going into fluidic spaces through nozzle is laggard, because the disorder of the small asymmetry of fluidic oscillation impulse generator geometry and jet existence itself; Jet entrainment and two side walls between interference effect with asymmetric, produce pressure reduction in the jet both sides, this pressure reduction promotes the deflection of jet; To produce wall attachment effect; Be attached on the side wall surface of fluidic spaces, flow, arrive the jet exit of this side along wall; Suppose that jet at first attaches the side wall surface of wall in the fluidic spaces of first jet exit, one side; And it is mobile along this wall; Arrive first jet exit, a part of current get into the first flow that is connected with first jet exit, and the effluent trough through the first flow tail end oozes; Another part current can get into the first oscillatory feedback signalling channel through the first oscillatory feedback signal input port at the first jet exit place; Arrive the first oscillatory feedback signal functional port through the first oscillatory feedback signalling channel; Act on the current at jet nozzle place; Jet is deflected, turn to and attach the side wall surface of wall, flow to second jet exit along this side wall surface in the fluidic spaces of second jet exit, one side; This moment, a part of current got into second runner that is connected with second jet exit, and the effluent trough through the second runner tail end oozes; Another part current then get into the second oscillatory feedback signalling channel through the second oscillatory feedback signal input port at the second jet exit place; Arrive II oscillatory feedback signal functional port through the second oscillatory feedback signalling channel; Act on the current at jet nozzle place; Jet is deflected once more, and current return to the fluidic spaces side wall surface of first jet exit, one side, form one time the oscillating impulse process; So move in circles,, in two runners, produce the pulse current respectively through the flow oscillation of oscillating impulse generator.
Beneficial effect of the present invention: the present invention is owing to use the fluidic oscillation technology; Switch the jet direction of current, order about current intermittent flowing in two runners, realize the pulse process that continues; In runner, form strong turbulent fluctuation and impact current; Be of value to and wash away runner, improve the solidfied material transport capability, increase the anti-blockage capability of irrigator; The strong turbulent fluctuation of current has guaranteed that irrigator has effect of energy dissipation efficiently, helps reducing the fluidised form index of irrigator, and it is more even to drip; Save the elastomer structures such as rubber, plastic foil, spring of existing pulse drip emitter, simplified the structure of pulse drip emitter, make that the operation of impulse generator is more reliable, lastingly; Fluidic oscillation pulse drip emitter need not any attachment device; Material can be identical with existing drip emitter material commonly used; Only need exploitation fluidic oscillation pulse drip emitter mould, can adopt processing technology, the method and apparatus of existing drip emitter or drip irrigation pipe racks to carry out injection moulding, processing and moulding, processing technology is simple; Manufacturing cost is lower; Easy to install, the present invention can construct the pulse drip emitter of multiple version, but the demand that suit is irrigated in field crop, vegetables, industry of planting forest or fruit tress etc.
Description of drawings
Fig. 1 is the orthogonal view of the embodiment of the invention 1;
The rearview of Fig. 2 embodiment 1;
Fig. 3 is the amplification profile of A-A Section line among Fig. 1;
Fig. 4 is the amplification profile of B-B Section line among Fig. 1;
Fig. 5 is the orthogonal view of the embodiment of the invention 2;
Fig. 6 is the rearview of embodiment 2;
Fig. 7 is the amplification profile of C-C Section line among Fig. 5;
Fig. 8 is the amplification profile of D-D Section line among Fig. 5;
Among the figure, 1. intake chamber 2. impulse generator imports 3. contraction sections 4. diversion sections 5. jet nozzles 6. first oscillatory feedback signal functional ports 7. second oscillatory feedback signal functional ports 8. first oscillatory feedback signalling channels 9. second oscillatory feedback signal functional ports 10. fluidic spaces 11. first oscillatory feedback signal input ports 12. second oscillatory feedback signal input ports 13. first jet exits 14. second jet exits 15. splitter plates 16. first flows 17. second runners 18. first effluent trough I 19. second effluent troughs 20. are filtered windows.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Embodiment 1:
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, intake chamber 1 bottom is provided with filter window 20, intake chamber 1 terminal connection impulse generator import 2; The concussion impulse generator is made up of impulse generator import 2, contraction section 3, diversion section 4, jet nozzle 5, the first oscillatory feedback signal functional port 6, the second oscillatory feedback signal functional port II, the first oscillatory feedback signalling channel 8, the second oscillatory feedback signalling channel 9, fluidic spaces 10, the first oscillatory feedback signal input port 11, the second oscillatory feedback signal input port 12, first jet exit 13, second jet exit 14 and splitter plate 15; Jet concussion impulse generator is impulse generator import 2 foremost; Impulse generator import 2 fronts are communicated with intake chamber 1; Impulse generator import 2 back are communicated with a pre-large post-small inverted tubaeform contraction section 3; Contraction section 3 backs are communicated with the diversion section 4 of a rectangle; Diversion section 4 backs of rectangle are communicated with a jet nozzle 5; The first oscillatory feedback signal functional port 6 and the second oscillatory feedback signal functional port 7 are set respectively on the sidewall on jet nozzle both sides, are the fluidic spaces 10 of one section pre-small post-large shape behind the jet nozzle 5,15 one-tenth pointed shape of splitter plate; Be positioned at the end of fluidic spaces 10; And the end of fluidic spaces 10 is partitioned on the sidewall that the first oscillatory feedback signal input port, 11, the second jet exits are set on the sidewall of first jet exit 13 and second jet exit, 14, the first jet exits 13 of fluidic oscillation impulse generator the second oscillatory feedback signal input port 12 is set; On the wall of the first oscillatory feedback signal functional port 6 and the second oscillatory feedback signal input port, 11 1 sides, slot; Be communicated with the first oscillatory feedback signal functional port 6 and the second oscillatory feedback signal input port 11, form the first oscillatory feedback signalling channel 8, on the wall of the second oscillatory feedback signal functional port 7 and the second oscillatory feedback signal input port, 12 1 sides, slot; Be communicated with the second oscillatory feedback signal functional port 7 and the second oscillatory feedback signal input port 12, form the second oscillatory feedback signalling channel 9; First jet exit 13 of concussion impulse generator is communicated with first flow 16, and second jet exit 14 is communicated with second runner 17; First effluent trough 18 is communicated with first flow 16, and second effluent trough 19 is communicated with second runner 17, and an integral body that constitutes thus forms a kind of oscillating impulse drip emitter, is the 1st embodiment of the present invention.
Concrete implementation procedure: the pressure flow in the drip irrigation system hollow billet gets into intake chamber 1 by filter window 20; Get into the fluidic oscillation impulse generator by impulse generator import 2; Form jets through contraction section 3, diversion section 4 and jet nozzle 5, jet supposes that going into fluidic spaces 10 through nozzle 5 is laggard jet at first attaches the side wall surface of wall in the fluidic spaces 10 of first jet exit, 13 1 sides; And it is mobile along this wall; Arrive first jet exit 13, a part of current get into the first flow 16 that is connected with first jet exit 13, and first effluent trough 18 through first flow 16 tail ends oozes; Another part current can get into the first oscillatory feedback signalling channel 8 through the first oscillatory feedback signal input port 11 at first jet exit, 13 places; Arrive the first oscillatory feedback signal functional port 6 through the first oscillatory feedback signalling channel 8; Act on the current at jet nozzle 5 places; Jet is deflected, turn to and attach fluidic spaces 10 side wall surfaces of wall, flow to second jet exit 14 along this side wall surface in second jet exit, 14 1 sides; This moment, a part of current got into second runner 17 that is connected with second jet exit 14, through second flow 17 tail ends effluent trough 19 ooze; Another part current then get into the second oscillatory feedback signalling channel 9 through the second oscillatory feedback signal input port 12 at second jet exit, 14 places; Arrive the second oscillatory feedback signal functional port 7 through the second oscillatory feedback signalling channel 9; Act on the current at jet nozzle 5 places; Jet is deflected once more, and current return to the side wall surface of the fluidic spaces 10 of first jet exit, 13 1 sides, form one time the oscillating impulse process; So move in circles,, in two runners, produce the pulse current respectively through the flow oscillation of oscillating impulse generator; Utilize the frequent strong water impact of pulse process, wash away and carry the easy obstruction material of drip irrigation system, improve the anti-blockage capability of irrigator; The intense impact that the pulse current cause makes the interior current of runner produce violent turbulent fluctuation, has strengthened the usefulness effect of runner; Can reduce the fluidised form index of irrigator, improve the uniformity of water outlet.
Embodiment 2:
With reference to Fig. 5, Fig. 6, Fig. 7, Fig. 8; Basic structural feature is similar with embodiment 1, is that with the difference of embodiment 1 splitter plate 15 front ends are arcs of recesses, and the first oscillatory feedback signalling channel 8 and the second oscillatory feedback signalling channel 9 are " L " shape; Has only an effluent trough 18; By effluent trough 18 end of first flow 16 with second runner 17 is communicated with, two shared outlets of runner form the fluidic oscillation pulse drip emitter with a delivery port.
Jet pulse drip emitter of the present invention fully discloses through embodiment, but said embodiment is not in order to restriction the present invention, and other embodiment also can be arranged under the prerequisite that does not break away from spirit of the present invention or essential characteristic; As to filter window can be forms such as perforated grill, porous array, and the position of filter window can also be in the side of intake chamber; A plurality of intake chambers can be set, and intake chamber structure, shape can be multiple geometries such as circular, oval, trapezoidal, triangle; Contraction section can be positioned at the intake chamber end, becomes a contraction mouth, and diversion section directly is communicated with intake chamber, and diversion section can also can be circular trough for rectangular channel; The splitter plate end face can be cambered surface, plane etc.; The oscillatory feedback signalling channel can be " L " shape, " U " shape etc.; Fluidic spaces can also be other pre-small post-large geometric figures such as various trapezoidal, triangles, arc enlarging; Runner can have the above arrangement mode of two rows, and flow passage structure can also be to stream forms such as formula, long flow channel type, aperture and various labyrinth paths, and two effluent troughs can be arranged in two different directions.
Claims (6)
1. oscillating impulse drip emitter; Form by intake chamber, fluidic oscillation impulse generator, runner and effluent trough; Intake chamber is provided with the filter window and is communicated with the fluidic oscillation impulse generator; The fluidic oscillation impulse generator is communicated with runner; Effluent trough is positioned at flow field end, it is characterized in that: said fluidic oscillation impulse generator is made up of impulse generator import, contraction section, diversion section, jet nozzle, the first oscillatory feedback signal functional port, the second oscillatory feedback signal functional port, the first oscillatory feedback signalling channel, the second oscillatory feedback signalling channel, fluidic spaces, the first oscillatory feedback signal input port, the second oscillatory feedback signal input port, first jet exit, second jet exit and splitter plate; The fluidic oscillation impulse generator is the impulse generator import foremost; Connect a pre-large post-small contraction section thereafter; Being a diversion section and a jet nozzle then, the first oscillatory feedback signal functional port and the second oscillatory feedback signal functional port are set respectively on the sidewall on jet nozzle both sides, is the fluidic spaces of one section pre-small post-large shape behind the jet nozzle; Splitter plate is positioned at the end of fluidic spaces; And the end of fluidic spaces is partitioned into first jet exit and second jet exit of fluidic oscillation impulse generator, and first jet exit is connected with first flow, and second jet exit is connected with second runner; The first oscillatory feedback signal input port is set on the sidewall of first jet exit; The second oscillatory feedback signal input port is set on the sidewall of second jet exit, on the wall of the first oscillatory feedback signal functional port and the first oscillatory feedback signal input port, one side, slots, be communicated with the first oscillatory feedback signal functional port and the first oscillatory feedback signal input port; Form the first oscillatory feedback signalling channel; On the wall of the second oscillatory feedback signal functional port and the second oscillatory feedback signal input port, one side, slot, be communicated with the second oscillatory feedback signal functional port and the second oscillatory feedback signal input port, form the second oscillatory feedback signalling channel II.
2. a kind of oscillating impulse drip emitter as claimed in claim 1 is characterized in that: the version of the said first flow or second runner is labyrinth type, stream formula, long flow channel type or aperture runner form.
3. a kind of oscillating impulse drip emitter as claimed in claim 1; It is characterized in that: said effluent trough is two independently effluent troughs; Be respectively first tank and second effluent trough; First effluent trough is communicated with first flow, and second effluent trough is communicated with second runner, forms the oscillating impulse drip emitter with two delivery ports.
4. a kind of oscillating impulse drip emitter as claimed in claim 1 is characterized in that: said effluent trough is communicated with the end of first flow with second runner, and two shared outlets of runner form the oscillating impulse drip emitter with a delivery port.
5. a kind of oscillating impulse drip emitter as claimed in claim 1 is characterized in that: said diversion section is a rectangle; Said splitter plate is the ellipse that pointed shape or front end are arcs of recesses; Said oscillatory feedback signalling channel is " L " shape or " U " shape.
6. oscillating impulse drip irrigation method; Be specially: the pressure flow in the hollow billet gets into intake chamber by the filter window, gets into the fluidic oscillation impulse generator by the impulse generator import, forms jet through contraction section, diversion section and jet nozzle; Jet is being gone into fluidic spaces through nozzle is laggard; Be attached on the side wall surface of fluidic spaces, flow, arrive the jet exit of this side along wall; Suppose that jet at first attaches the side wall surface of wall in the fluidic spaces of first jet exit, one side; And it is mobile along this wall; Arrive first jet exit, a part of current get into the first flow that is connected with first jet exit, and the effluent trough through the first flow tail end oozes; Another part current can get into the first oscillatory feedback signalling channel through the first oscillatory feedback signal input port at the first jet exit place; Arrive the first oscillatory feedback signal functional port through the first oscillatory feedback signalling channel; Act on the current at jet nozzle place; Jet is deflected, turn to and attach the side wall surface of wall, flow to second jet exit along this side wall surface in the fluidic spaces of second jet exit, one side; This moment, a part of current got into second runner that is connected with second jet exit, and the effluent trough through the second runner tail end oozes; Another part current then get into the second oscillatory feedback signalling channel through the second oscillatory feedback signal input port at the second jet exit place; Arrive II oscillatory feedback signal functional port through the second oscillatory feedback signalling channel; Act on the current at jet nozzle place; Jet is deflected once more, and current return to the fluidic spaces side wall surface of first jet exit, one side, form one time the oscillating impulse process; So move in circles,, in two runners, produce the pulse current respectively through the flow oscillation of oscillating impulse generator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100747769A CN102599036A (en) | 2012-03-21 | 2012-03-21 | Oscillation pulsed drip irrigation emitter and drip irrigation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100747769A CN102599036A (en) | 2012-03-21 | 2012-03-21 | Oscillation pulsed drip irrigation emitter and drip irrigation device |
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| CN102599036A true CN102599036A (en) | 2012-07-25 |
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| CN2012100747769A Pending CN102599036A (en) | 2012-03-21 | 2012-03-21 | Oscillation pulsed drip irrigation emitter and drip irrigation device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102860246A (en) * | 2012-10-15 | 2013-01-09 | 江苏大学 | Jet oscillation drop irrigation emitter |
| CN102870650A (en) * | 2012-10-15 | 2013-01-16 | 江苏大学 | Oscillating drip irrigation emitter |
| WO2015075738A3 (en) * | 2013-10-28 | 2015-08-13 | Jain Irrigation Systems Limited | Drip irrigation hose with outboard parallel inlets |
| CN108722694A (en) * | 2018-04-12 | 2018-11-02 | 南京航空航天大学 | A kind of supersonic jet oscillator |
| CN111096210A (en) * | 2019-11-19 | 2020-05-05 | 石河子大学 | Three-way flow dividing and bypassing flow channel and emitter based on flow channel |
| CN114223508A (en) * | 2022-02-10 | 2022-03-25 | 山东中科先进技术研究院有限公司 | Jet oscillator water dropper and drip irrigation system |
| CN114223507A (en) * | 2022-02-10 | 2022-03-25 | 山东中科先进技术研究院有限公司 | Positive pressure feedback jet pulse water dropper and drip irrigation system |
| CN114303892A (en) * | 2022-01-19 | 2022-04-12 | 山东中科先进技术研究院有限公司 | Load feedback jet pulse emitter and drip irrigation system |
| CN111096210B (en) * | 2019-11-19 | 2024-04-26 | 石河子大学 | Tee-joint-shaped shunt bypass flow channel and emitter based on same |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102870650A (en) * | 2012-10-15 | 2013-01-16 | 江苏大学 | Oscillating drip irrigation emitter |
| CN102870650B (en) * | 2012-10-15 | 2014-12-03 | 江苏大学 | Oscillating drip irrigation emitter |
| CN102860246B (en) * | 2012-10-15 | 2014-12-03 | 江苏大学 | Jet oscillation drop irrigation emitter |
| CN102860246A (en) * | 2012-10-15 | 2013-01-09 | 江苏大学 | Jet oscillation drop irrigation emitter |
| US11632917B2 (en) | 2013-10-28 | 2023-04-25 | Jain Irrigation Systems Limited | Drip irrigation hose with outboard parallel inlets |
| WO2015075738A3 (en) * | 2013-10-28 | 2015-08-13 | Jain Irrigation Systems Limited | Drip irrigation hose with outboard parallel inlets |
| CN108722694A (en) * | 2018-04-12 | 2018-11-02 | 南京航空航天大学 | A kind of supersonic jet oscillator |
| CN111096210A (en) * | 2019-11-19 | 2020-05-05 | 石河子大学 | Three-way flow dividing and bypassing flow channel and emitter based on flow channel |
| CN111096210B (en) * | 2019-11-19 | 2024-04-26 | 石河子大学 | Tee-joint-shaped shunt bypass flow channel and emitter based on same |
| CN114303892A (en) * | 2022-01-19 | 2022-04-12 | 山东中科先进技术研究院有限公司 | Load feedback jet pulse emitter and drip irrigation system |
| CN114303892B (en) * | 2022-01-19 | 2024-01-23 | 山东中科先进技术有限公司 | Load feedback jet flow pulse dripper and drip irrigation system |
| CN114223507A (en) * | 2022-02-10 | 2022-03-25 | 山东中科先进技术研究院有限公司 | Positive pressure feedback jet pulse water dropper and drip irrigation system |
| CN114223508A (en) * | 2022-02-10 | 2022-03-25 | 山东中科先进技术研究院有限公司 | Jet oscillator water dropper and drip irrigation system |
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Application publication date: 20120725 |