CN100581350C - Underground drip irrigation water-irrigating device capable of preventing root intrusion - Google Patents
Underground drip irrigation water-irrigating device capable of preventing root intrusion Download PDFInfo
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- CN100581350C CN100581350C CN200710163886A CN200710163886A CN100581350C CN 100581350 C CN100581350 C CN 100581350C CN 200710163886 A CN200710163886 A CN 200710163886A CN 200710163886 A CN200710163886 A CN 200710163886A CN 100581350 C CN100581350 C CN 100581350C
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- drip irrigation
- irrigator
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- root intrusion
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
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Abstract
The invention provides a root intrusion protection douche for subsurface drip irrigation, relating to a subsurface drip irrigation douche, which comprises a water intake cavity with a sawtooth-shaped flow road and a water outtake cavity with a water outlet which are respectively arranged at the two sides of the douche, the water outlet is a slot water outlet. By proceeding from the physical structure of the douche, the invention adopts the structure of the slot water outlet and the structure of arranging a physical barrier inside the water outtake cavity, which not only effectively solves the problem of root intrusion, but also has the advantages of low price and no environmental pollution. Besides, the invention arranges a sieve-shaped filtering grid and optimizes the size of the sawtooth-shaped flow road, thus improving the jam resistance performance of the douche and promising the uniformity of the inside flow rate.
Description
Technical field
The present invention relates to a kind of underground drip irrigation irrigator, the compensation underground drip irrigation water-irrigating device capable of preventing root intrusion of particularly a kind of non-pressure.
Background technology
Underground drip irrigation (Subsurface Drip Irrigation is called for short the SDI technology) is a kind of new and effective water-saving irrigation technique that development forms on the drip irrigation technique perfect day by day basis of (Drip Irrigation is called for short the DI technology).It is meant that water slowly goes out stream by the irrigator on the buried hollow billet, and near the soil going into to be seeped into relends and helps capillarity or action of gravity that moisture diffusion is made for a kind of localized irrigation mode that thing absorbs to whole layer.Be characterized in less in the process of pouring water to the soil structure disturbance, be beneficial to and keep the loose penetrating environmental condition of root of the crop layer, irrigation water, fertilizer can be delivered directly to crop root zone by being embedded in underground hollow billet and irrigator simultaneously, thereby the leaching and the volatilization loss of the surface evaporation and the fertilizer of moisture have been reduced effectively, improve water, fertile utilization ratio, had tangible water saving, fertile, the yield increase effect of joint.In addition, after the field water-carriage system of underground drip irrigation is buried, can also overcomes pipeline and directly tan by the sun the defective that is easy to wear out, and can prevent the damage of pipeline and lose, make things convenient for the field management operation simultaneously.Because these tangible advantages of underground drip irrigation technique in today of water resource worsening shortages, make it begin to be subjected to increasing concern of people and attention.
From the domestic and international underground drip irrigation system operation conditions of nearly decades, the blockage problem of irrigator has become one of key factor of direct restriction underground drip irrigation system operation quality.Except existing and the drip surface same cause, promptly outside the obstruction that causes mainly due to quality of irrigation water, the underground drip irrigation irrigator also exists the obstruction that negative pressure obstruction and root intrusion irrigator cause.Root intrusion is meant that emitter outlet place soil moisture content is higher, because root system is to the characteristic of aquatic length, root system twines or stretches into the irrigator inner flow passage and the obstruction that causes.Root intrusion is one of major reason that causes the underground drip irrigation system obstruction, caused the common concern of Chinese scholars, as Solomon etc. in 1992, by experiment the various irrigators of lawn irrigation are assessed, find that 90% above irrigator all can be subjected to the influence of root intrusion, fully proved the generality that the root intrusion problem exists.Because the irrigator of underground drip irrigation is embedded in underground, in a single day crop root stretches into irrigator inner flow passage structure, can't carry out human intervention again, and can only leaving, it continues to grow in the irrigator runner, the final irrigator that stops up, therefore " prevention " is the most effective settling mode of root intrusion problem.
At present, roughly can be divided into two classes at the solution of root intrusion problem, a class is the chemical agent injection method; An other class is the special-purpose irrigator of exploitation underground drip irrigation, comprises anti-root intrusion private filter and special-purpose irrigator etc.
One, chemical agent injection method:
Aspect the chemical agent injection, regularly adding trefanocide, chloride or phosphoric acid in irrigation water is to solve the comparatively common several method of root intrusion problem at present.
1) in irrigation system, regularly adds a certain amount of trefanocide and can effectively suppress the root intrusion irrigator, yet this method still is not widely used, its reason is that scientific and reasonable definite dispenser parameter comprises problems such as formulation rate and spraying time, reach key technical problems such as residue of pesticide, pollution and all need long-term experimental study and checking, ripe pesticide application technology system is demanded urgently setting up.
2) suitable injection acid solution in irrigation system can prevent to a certain extent that root intrusion from stopping up and can improve quality of irrigation water, reduces the pH value of irrigation water, reduces the generation of biological obstruction.But the weak point of the method is, usually chloride or phosphoric acid are very fast in degraded in soil, and the time that plays a role is shorter, therefore need frequently to apply in the breeding time of crop, cause the labour intensity of irrigation system operational management is increased, so the application of this method has been subjected to certain restriction.
Two, the special-purpose irrigator of underground drip irrigation:
In recent years, some external irrigation installation companies have successively released the anti-root intrusion special equipment of a series of underground drip irrigation.
1) developed a kind of Teachfilter series underground drip irrigation private filter specially as Netafim company, this filter interior contains an explosive barrel that the weed killer herbicide trefanocide is housed, during use when filtering, can in irrigation water, add weed killer herbicide, thereby avoid the generation of root intrusion to a certain extent.Yet, this filter is since 1996 come out, there is more dispute always, mainly be because this filter needs the artificial unloading to carry out backwash, when filter stops up, adhere to a large amount of trefanocide in the sediment, its concentration far surpasses the concentration of trefanocide in the irrigation water, very easily moves to the face of land and contaminated environment with sediment when backwash.Therefore, when solving the root intrusion problem, this method can't be paid the utmost attention to.
2),, developed the special-purpose irrigator of rootguard series underground drip irrigation from the angle of chemical protection in the Geoflow company that marches at the forefront of the world aspect the research of root intrusion.Specific weed killer herbicide is dissolved in the said firm in the plastic material of producing irrigator, after irrigator is buried, weed killer herbicide in the plastics will be discharged in the irrigator surrounding soil with vapor form by given pace, thereby near irrigator, form a soil environment that is unfavorable for that crop root is grown among a small circle, suppress root system and near irrigator, grow, make producing of irrigator itself scold root.Yet the complex manufacturing of this irrigator, price are too expensive, and its price is the twice of common irrigator.Because the restriction of price factor, this type of anti-root intrusion special equipment only is used for the irrigation of garden landscape or golf course usually, and does not have feasibility for the field crop of non-economy or medium economy.
3) in addition, it is reported that some companies are by set up mechanical barrier (mechanical barriers) at irrigator delivery port place, to reach the effect of anti-root intrusion irrigator.According to pertinent literature, Netafim has produced the irrigator of a kind of being called " Techline ", it is to establish a flange at irrigator apopore end, when root system when the apopore, grow around flange earlier, the height of flange approximately can twine 3 inches long roots, generally can not produce the phenomenon of root intrusion in the time 100 days left and right sides." Techline " irrigator belongs to the pressure-compensated irrigator, and expense is more expensive, and up to the present, does not see relevant therewith product on China market, and domestic Related product is blank especially.From the retrieval situation analysis in related patent data storehouse, do not retrieve the patent application report that phase is arranged therewith yet.
In sum, the effective ways that prevent root intrusion underground drip irrigation irrigator have multiple, the one, set about from the irrigation operational management pattern of underground drip irrigation system, in these class methods, applying pesticide application technology, the problem of environmental pollution that the method for trefanocide brings with water does not still have fine solution, has a lot of problems in actual applying.The 2nd, research and develop relevant drip irrigation special equipment with anti-root intrusion, arrange the root material as adding in the irrigator material, yet what this type of technical products had in the market costs an arm and a leg significantly and problem of environmental pollution, still has not slight drag in actual applying.
Therefore set about from the physical arrangement of underground drip irrigation irrigator itself, invent a kind of can effectively avoid costing an arm and a leg with problem of environmental pollution prevent root intrusion underground drip irrigation irrigator, aim just of the present invention.
Summary of the invention
The objective of the invention is defective at above-mentioned prior art, provide a kind of can effectively avoid costing an arm and a leg and problem of environmental pollution prevent root intrusion underground drip irrigation irrigator.
The technical scheme taked of the present invention is to achieve these goals: a kind of underground drip irrigation water-irrigating device capable of preventing root intrusion, comprise the intake antrum that contains the sawtooth pattern runner of being located at both sides respectively and the water chamber that contains delivery port, in order to prevent root intrusion, described delivery port is the narrow slit type delivery port.
In order better to prevent root intrusion, the water chamber transverse center position at close described sawtooth pattern runner place is provided with the physics formula barrier that links to each other with water chamber, is provided with groove around the physics formula barrier.
Described physics formula barrier is " one " font barrier and " T " font barrier that is provided with in turn, and " one " font barrier is provided with the transverse center of water chamber is vertical, and " T " font barrier is along the transverse center horizontal positioned of water chamber.
Stop up function in order to improve the anti-physics of the present invention, the sawtooth pattern runner top in the described intake antrum is provided with sieve shape filter grid.
In order to have improved the turbulent fluctuation of zigzag runner fluid movement, the sawtooth height of described sawtooth pattern runner is 1.7mm, and jaggy pitch is 1.8mm, the tooth angle degree is 108 degree, the sawtooth pattern flow channel depth is 1mm, and the sawtooth pattern flow channel length is 19.8mm, and whole irrigator length is 45mm.
The invention has the beneficial effects as follows: compared to existing technology, the present invention sets about from the physical arrangement of irrigator itself, adopted the narrow slit type delivery port structure, and water chamber inside be provided with the structure of physics formula barrier, not only effectively solve the root intrusion problem, but also the advantage that has low price, do not pollute the environment.In addition, the present invention is provided with sieve shape filter grid and has optimized the size of zigzag runner, makes the present invention improve the irrigator performance of anti-blockage and has guaranteed the uniformity of its inner stream flow.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present invention;
Fig. 2 is the enlarged diagram of delivery port of the present invention;
Fig. 3 is the A-A cutaway view Amplified image of Fig. 1.
Among the figure: 1 intake antrum, 2 filter grids, 3 " one " font barriers, 4 grooves, 5 " T " font barrier, 6 water chambers, 7 sawtooth pattern runners, 8 narrow slit type delivery ports, 9 delivery port positions.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
The inventor has at first carried out a large amount of combination orthogonal test of multiple factors to the flow passage structure parameter of irrigator and has tested with single factor, hydraulic performance and performance of anti-blockage relevant parameter with irrigator are performance assessment criteria, tentatively set up the design theory system of sawtooth pattern irrigator, promptly irrigator inner flow passage structure Design adopts zigzag flow passage structure design commonly used at present.A kind of underground drip irrigation water-irrigating device capable of preventing root intrusion as shown in Figure 1 comprises the intake antrum that contains sawtooth pattern runner 71 of being located at both sides respectively and the water chamber 6 that contains delivery port.Delivery port position 9 as shown in Figure 1.As shown in Figure 2, described delivery port is flat elongated narrow slit type delivery port 8, has formed the first road barrier that prevents root intrusion like this.Shown in Fig. 1,3, for the more efficiently root intrusion that prevents, the water chamber 6 transverse center positions at close described sawtooth pattern runner 7 places are provided with the physics formula barrier that links to each other with water chamber 6, are provided with groove 4 around the physics formula barrier.Described physics formula barrier is to be provided with in turn " one " font barrier 3 Hes " T " font barrier 5." one " font barrier 3 is provided with the transverse center of water chamber 6 is vertical, " one " font barrier 3 is provided with groove 4 near those sides of delivery port." T " font barrier 5 is along the transverse center horizontal positioned of water chamber 6, " T " font barrier 5 is provided with groove 4 away from delivery port position periphery.If root system has entered irrigator inside by the irrigator delivery port, because groove 4 is than other place is more moistening on every side, hydrotropism's feature of root system makes root system be wrapped on the physics formula barrier along groove 4 walkings, around the growth of physics formula barrier, thereby make root system can not enter the less sawtooth pattern runner of size 7 inside and the obstruction irrigator.
As shown in Figure 1, sawtooth pattern runner 7 tops in the described intake antrum 1 are provided with the sieve shape filter grid 2 with choke preventing function, the filtration diameter of described filter grid 2 is that 0.4mm, quantity are at least 20, because filtering diameter is 0.4mm, minimum dimension in the inner sawtooth pattern flow passage structure of irrigator, this irrigator flow passage structure part minimum dimension is designed to 0.86mm, has improved the anti-physics blocking ability of irrigator effectively.Under the guidance of design system of the present invention, space width, tooth cone angle, tooth registration, flow channel depth to irrigator are optimized the selection design, drawn optimum design size, the sawtooth height of described sawtooth pattern runner 7 is 1.7mm, jaggy pitch is 1.8mm, and the tooth angle degree is 108 degree, and the sawtooth pattern flow channel depth is 1mm, can effectively improve the turbulent fluctuation of zigzag runner fluid movement, improve the irrigator performance of anti-blockage and guaranteed the uniformity of inner stream flow.Sawtooth pattern runner 7 length are 19.8mm, and whole irrigator length is 45mm, is convenient to the design of the intraoral physical mechanical barrier of irrigator water outlet.
The present invention sets about from the physical arrangement of irrigator itself, adopted the narrow slit type delivery port structure, and water chamber inside be provided with the structure of physics formula barrier, not only effectively solve the root intrusion problem, but also the advantage that has low price, do not pollute the environment.In addition, be provided with sieve shape filter grid and optimized the size of zigzag runner, make the present invention improve the irrigator performance of anti-blockage and guaranteed the uniformity of its inner stream flow.
Above-described embodiment, the present invention embodiment a kind of more preferably just, the common variation that those skilled in the art carries out in the technical solution of the present invention scope and replacing all should be included in protection scope of the present invention.
Claims (4)
1. underground drip irrigation water-irrigating device capable of preventing root intrusion, comprise the intake antrum that contains the sawtooth pattern runner of being located at both sides respectively and the water chamber that contains delivery port, it is characterized in that: described delivery port is the narrow slit type delivery port, water chamber transverse center position near described sawtooth pattern runner place is provided with the physics formula barrier that links to each other with water chamber, is provided with groove around the physics formula barrier.
2. underground drip irrigation water-irrigating device capable of preventing root intrusion according to claim 1, it is characterized in that: " one " font barrier and " T " font barrier of described physics formula barrier for being provided with in turn, " one " font barrier is provided with the transverse center of water chamber is vertical, and " T " font barrier is along the transverse center horizontal positioned of water chamber.
3. underground drip irrigation water-irrigating device capable of preventing root intrusion according to claim 1 and 2 is characterized in that: the sawtooth pattern runner top in the described intake antrum is provided with sieve shape filter grid.
4. underground drip irrigation water-irrigating device capable of preventing root intrusion according to claim 3, it is characterized in that: the sawtooth height of described sawtooth pattern runner is 1.7mm, jaggy pitch is 1.8mm, the tooth angle degree is 108 degree, the sawtooth pattern flow channel depth is 1mm, the sawtooth pattern flow channel length is 19.8mm, and whole irrigator length is 45mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710163886A CN100581350C (en) | 2007-10-11 | 2007-10-11 | Underground drip irrigation water-irrigating device capable of preventing root intrusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710163886A CN100581350C (en) | 2007-10-11 | 2007-10-11 | Underground drip irrigation water-irrigating device capable of preventing root intrusion |
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| Publication Number | Publication Date |
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| CN101124883A CN101124883A (en) | 2008-02-20 |
| CN100581350C true CN100581350C (en) | 2010-01-20 |
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| CN200710163886A Expired - Fee Related CN100581350C (en) | 2007-10-11 | 2007-10-11 | Underground drip irrigation water-irrigating device capable of preventing root intrusion |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GR20100100517A (en) * | 2010-09-20 | 2012-04-30 | Αριστειδης Εμμανουηλ Δερμιτζακης | Dripper and method for the perforation of water exit orifices in irrigation pipes |
| CN106465670A (en) * | 2015-08-25 | 2017-03-01 | 新疆天业（集团）有限公司 | A kind of drip irrigation zone for surface-water irrigation |
| CN106069620A (en) * | 2016-08-04 | 2016-11-09 | 大禹节水（天津）有限公司 | Side-slit drip irrigation belt for underground drip irrigation |
| CN107624616B (en) * | 2017-09-30 | 2019-07-26 | 谢英格 | A kind of irrigation pipe |
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| CN101124883A (en) | 2008-02-20 |
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