CN201371092Y - Device for preventing blockage of underground drip irrigation system - Google Patents
Device for preventing blockage of underground drip irrigation system Download PDFInfo
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- CN201371092Y CN201371092Y CN200920105333U CN200920105333U CN201371092Y CN 201371092 Y CN201371092 Y CN 201371092Y CN 200920105333 U CN200920105333 U CN 200920105333U CN 200920105333 U CN200920105333 U CN 200920105333U CN 201371092 Y CN201371092 Y CN 201371092Y
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- drip irrigation
- water dropper
- irrigation system
- underground drip
- elastic part
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Abstract
The utility model provides a device for preventing blockage of an underground drip irrigation system, the device is an elastic part which is arranged on the outside of a water outlet of a dripper in the underground drip irrigation system, and the working process of the device is as follows: (1) the elastic part and the dripper are in interference fit under the natural state, thereby leading the water outlet of the dripper to be in the closed state; (2) when the underground drip irrigation system works and achieves the pressure set value, the elastic part generates elastic deformation under the action of the pressure, the elastic part is separated from the water outlet, and water flow smoothly flows out; and (3) when the drip irrigation is finished and the pressure in the underground drip irrigation system is reduced, the elastic part is reset automatically and re-bound with the water outlet of the dripper closely. The installation of the elastic part can effectively solve the problems of negative pressure blockage of the buried dripper and the blockage of a root system, and the device has the advantages of simple structure, convenient installation and low cost.
Description
Technical field
The utility model relates to a kind of preventing clogging up device that is used for underground drip irrigation, particularly a kind of device that prevents that underground drip irrigation system from stopping up.
Background technology
Underground drip irrigation is a kind of more irrigation technique of water saving of being come by the ground drip irrigation development, it directly supplies water in the root district of crop by hollow billet and the douche (also being called water dropper) that is embedded in underground certain depth place (depth of burying is 20-40cm usually), thereby reduced the table soil evaporation loss of moisture, improved the utilization ratio of irrigation water.Water dropper (also being called douche) is the most critical parts on the drip irrigation pipe, and its effect is to make pressure water stream by the abundant energy dissipating of its inner flow passage, splashes into soil with stable, uniform low discharge.The water flow of water dropper is very little, and the flow of general single water dropper has only 1-8L/h, and water dropper inner flow passage structure mostly is zigzag or labyrinth shape, and width of flow path is very narrow, only is about 0.3-2mm usually.In addition, the water dropper apopore is also very little, generally have only about 0.5～1.2mm, so the deadly defect of water dropper is very easily to be stopped up by dirt and cause scrapping.Negative pressure inhales the mud obstruction and the root intrusion obstruction is two main factors that cause the water dropper obstruction of burying ground.
Be to solve the negative pressure blockage problem, some scholars attempt adopting filter material to do the interception protection at water dropper delivery port place, with cut off soil particle enter in the water dropper runner must be by approach.Yet the filter material method need be carried out manual parcel one by one to each water dropper and handled, and operation sequence is too numerous and diverse, thus workload excessive be its shortcoming that can't overcome.
Negative pressure at underground drip irrigation is inhaled the mud problem, and also some is to start with from the water dropper inner flow passage, has designed a kind of internally-inlaid pressure compensation water dropper.For example, Chinese utility model patent " underground drip irrigation douche ", it authorizes publication number is CN2403233, but the structure of this kind water dropper is too complicated, need carry out large-scale redevelopment to current production line, make the production cost of water dropper rise, therefore not have market prospects.
For avoiding crop root to stretch into water dropper inside, in the irrigation system operation phase, mainly alleviated the root system blockage problem of water dropper by in irrigation water, regularly injecting near the root system of methods such as small amount of chloride, acid solution or trefanocide in killing the water dropper among a small circle in the past.But frequently applying of these chemical substances can cause the labour intensity of irrigation system operational management to increase undoubtedly, and a large amount of use meetings of chemical substance simultaneously cause certain pollution to soil.
The employed water dropper of underground drip irrigation generally is made up of water dropper water inlet, water dropper runner and water dropper delivery port three parts both at home and abroad at present, pressure water stream enters in the water dropper runner by the water dropper water inlet, through the abundant energy dissipating of water dropper runner, in the soil around going into to be seeped into by the water dropper delivery port again.Therefore the delivery port of water dropper is the passage that connects between water dropper runner and the outside soil of water dropper, also is the unique channel that the soil particle (under suction function) around the water dropper is inhaled into water dropper runner inside when irrigation system water supply stops; Simultaneously, also be the unique channel that crop root stretches into water dropper.Therefore at water dropper delivery port place barrier is set, cuts off the negative pressure that this approach that soil particle and crop root enter water dropper inside can effectively solve water dropper and stop up and the root system blockage problem.According to above-mentioned mechanism, developing a kind of device that prevents that underground drip irrigation system from stopping up is aim of the present utility model.
Summary of the invention
The purpose of this utility model is the defective at above-mentioned prior art, a kind of device that prevents that underground drip irrigation system from stopping up is provided, have advantage simple in structure, easy for installation and with low cost, and the negative pressure that can effectively solve in the drip irrigation process is inhaled mud and root intrusion problem.
The technical scheme taked of the utility model is to achieve these goals: a kind of device that prevents that underground drip irrigation system from stopping up is arranged on the elastomeric element of the water dropper delivery port outside in the described underground drip irrigation system.When not irrigating, promptly under the nature, pressure in the drip irrigation pipe and atmospheric pressure pa equate that this moment, elastomeric element and delivery port closely pasted, and with described water dropper interference fit (magnitude of interference is less), made the water dropper delivery port be in closed condition.After water pump is opened, be that underground drip irrigation system is started working, water pressure in the drip irrigation pipe increases gradually, (size of Pw value is relevant with the material of selected elastomeric element greater than atmospheric pressure and when reaching a certain setting value Pw when the water pressure in the drip irrigation pipe, but because water pressure is much larger than the amount of elasticity of elastomeric element, the amount of elasticity that can ignore elastomeric element generally speaking), strain takes place in elastomeric element under the effect of pressure, elastomeric element and delivery port are thrown off, be that elastomeric element the gap occurred between the pressure jack-up of current and delivery port, make current go out stream smoothly.When water pump is shut down; be that drip irrigation finishes; the moment that underground drip irrigation system is closed; pressure in the drip irrigation pipe will be rapidly be decreased to Pn (Pw＞Pa＞Pn) by Pw; this moment, elastomeric element then automatically reset, and closely pasted once more and (promptly return to the interference fit state, but the magnitude of interference being bigger) with the water dropper delivery port; thereby locking water dropper delivery port prevents to suck the soil microparticle.And the Pn value is more little, and it is tightr that elastomeric element combines with delivery port.
In sum, elastomeric element only separates with the water dropper delivery port in the irrigation process, and other period elastomeric element all pastes and on the water dropper delivery port, locking crop root stretch into the passage of water dropper inside, therefore can effectively prevent the root intrusion blockage problem of water dropper.In addition, because elastomeric element is to the protective action of water dropper delivery port, particularly inhale the moment that the irrigation system of mud is closed being prone to negative pressure, elastomeric element and water dropper delivery port also closely paste with, locking the water dropper delivery port, therefore can effectively avoid the negative pressure of water dropper to inhale the mud blockage problem.
Described elastomeric element is elastic ring or flexure strip.
The diameter of drip irrigation pipe is that 16mm, water dropper delivery port diameter are 0.6mm in the described underground drip irrigation system, and described elastomeric element is the elastic ring that silica gel is made, and its diameter is that 15.9mm, thickness are 0.8mm for 1mm, width, and its cross section is a rectangle.
The cross section of described elastic ring is circle or rhombus.
The beneficial effects of the utility model are: compared to existing technology, the utility model is tackled from the water dropper delivery port, having designed a kind of elastic ring protects delivery port, the negative pressure that efficiently solves water dropper is inhaled mud obstruction and root intrusion blockage problem, has advantage simple in structure, easy for installation and with low cost.
Description of drawings
Fig. 1 is a Unit Installation schematic diagram described in the utility model;
Fig. 2 is a schematic diagram of measuring the anti-negative pressure performance devices that water dropper of the present utility model is installed;
Fig. 3 is the mensuration figure of anti-negative pressure plugging performance that the water dropper of elastic ring described in the utility model is installed.
Among the figure: 1 drip irrigation pipe, 2 water droppers, 3 water dropper delivery ports, 4. elastic ring, 10 have installed water dropper sample, 20 vacuum meters, 30 vavuum pump access points, the 40 air storage tanks of elastic ring additional.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but not as to qualification of the present utility model.
As shown in Figure 1 a kind of prevents the device that underground drip irrigation system stops up, and is arranged on the elastomeric element of water dropper delivery port 3 outsides of drip irrigation pipe 1 in the described underground drip irrigation system.Described elastomeric element is elastic ring 4 or flexure strip.Promptly when drip irrigation pipe 1 is tubulose, the water dropper delivery port 3 outer socket elastic rings 4 (referring to Fig. 1) of water dropper 2; When drip irrigation pipe 1 is band shape, the water dropper delivery port 3 outer flexure strips that are bonded with of water dropper 2, the two ends up and down of flexure strip are bonded in the two ends up and down of water dropper delivery port, the centre is the free state (not shown).
Be example with the elastic ring below, be illustrated.For detecting the utility model effect, on drip irrigation market, selected a drip irrigation pipe 1 that has cylindrical water dropper immediately, elastic ring 4 has been installed in water dropper delivery port 3 positions on drip irrigation pipe 1 then, and the standard method that detects according to drip irrigation pipe, water dropper sample 10 performances that install additional behind the elastic ring are detected.Wherein, this selected drip irrigation pipe is of a size of parameter and is: diameter is 16mm, and water dropper delivery port diameter is 0.6mm.The elastic ring that is installed additional is made by silica gel, and its diameter is 15.9mm, and the thickness of elastic ring is 1mm, and width is 0.8mm.The cross section of elastic ring is a rectangle.Common geometry such as circle, rhombus can also be adopted in the cross section of described elastic ring 4.
For detecting the protection effect of described elastic ring to negative pressure suction mud, adopt experimental rig (vacuum extractor) as shown in Figure 2, among the figure: 10 is that the water dropper sample, 20 that has installed elastic ring additional is that vacuum meter, 30 is that vavuum pump access point, 40 is the air storage tank.The anti-negative pressure plugging performance that installs the water dropper behind the elastic ring additional has been carried out indoor test.This equipment can be to applying any negative pressure in 0～80Kpa scope for the examination water dropper.25 water dropper samples 10 that installed elastic ring additional that will extract immediately in the actual measurement are connected with the test port of vacuum extractor one by one, by the test negative pressure of vavuum pump classification generation 20Kpa, 40Kpa, 60Kpa and 80Kpa, the corresponding anti-negative pressure performance test of the water dropper work of finishing under the different pressures.After reaching each test negative pressure value, carry out the pressurize test, every the situation of change of a vacuum meter reading of 5min observation, duration 40min.As shown in Figure 3, test result shows that all install the water dropper sample 10 of elastic ring additional, and in the testing time scope of regulation, the reading of vacuum meter 20 all remains on stable state.Installing additional when having guaranteed that it is worked under condition of negative pressure of elastic ring, there is not air to enter runner from the apopore of water dropper, this just means that the soil particle around the water dropper can't be inhaled into runner, and the water dropper that installs additional behind the elastic ring has possessed good anti-negative pressure plugging performance.
For further testing the effect of the water dropper that installs elastic ring additional, this water dropper is used for the irrigation tests on lawn in XX irrigation tests base, Beijing, through the Continuous Observation that continues a year, the growth of turfgrass is normal, and height is neat.Illustrate that this water dropper that has installed elastic ring additional has preferable performance, the uniformity of pouring water is better, can fully satisfy the demand of crop.After 1 year, from soil, dig out 25 water droppers at random and cut the water dropper runner open, do not find to have in the water dropper root system residual, illustrate that the water dropper that installs elastic ring additional also has anti-preferably root system and stops up effect.
So advantage of the present utility model is:
1. install negative pressure suction mud obstruction and root intrusion blockage problem that elastic ring can effectively solve buried water dropper additional at water dropper delivery port place;
2. this elastomeric element is simple in structure, and is with low cost, easy for installation, is easy to realize the production line installation;
3. this elastomeric element can be used as a kind of optional spare part of existing drip irrigation pipe.Allow the client that bigger choice is arranged, irritate on ground if the client need carry out ground, then need not buy this elastic ring; If the client needs underground drip irrigation system, only need on former basis, additionally to install additional again an elastic ring and common drip irrigation pipe can be transform as the special-purpose drip irrigation pipe of underground drip irrigation.
The utility model is tackled from the water dropper delivery port, has designed a kind of elastic ring delivery port is protected, and the negative pressure that efficiently solves water dropper is inhaled mud obstruction and root intrusion blockage problem, has advantage simple in structure, easy for installation and with low cost.
Above-described embodiment, the utility model specific embodiment a kind of more preferably just, the common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacing all should be included in the protection domain of the present utility model.
Claims (4)
1. a device that prevents that underground drip irrigation system from stopping up is characterized in that: be arranged on the elastomeric element of the water dropper delivery port outside in the described underground drip irrigation system, elastomeric element and described water dropper interference fit.
2. the device that prevents that underground drip irrigation system from stopping up according to claim 1, it is characterized in that: described elastomeric element is elastic ring or flexure strip.
3. the device that prevents that underground drip irrigation system from stopping up according to claim 2, it is characterized in that: the diameter of drip irrigation pipe is that 16mm, water dropper delivery port diameter are 0.6mm in the described underground drip irrigation system, described elastomeric element is the elastic ring that silica gel is made, its diameter is that 15.9mm, thickness are that 1mm, width are 0.8mm, and its cross section is a rectangle.
4. the device that prevents that underground drip irrigation system from stopping up according to claim 2, it is characterized in that: the cross section of described elastic ring is circle or rhombus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920105333U CN201371092Y (en) | 2009-01-22 | 2009-01-22 | Device for preventing blockage of underground drip irrigation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920105333U CN201371092Y (en) | 2009-01-22 | 2009-01-22 | Device for preventing blockage of underground drip irrigation system |
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| CN201371092Y true CN201371092Y (en) | 2009-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200920105333U Expired - Fee Related CN201371092Y (en) | 2009-01-22 | 2009-01-22 | Device for preventing blockage of underground drip irrigation system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010083765A1 (en) * | 2009-01-22 | 2010-07-29 | 中国水利水电科学研究院 | Device for preventing negative pressure of underground drip irrigation system and blockage of root system |
| CN102283080A (en) * | 2011-08-01 | 2011-12-21 | 中国农业科学院农田灌溉研究所 | Anti-biological clogging device for drip-irrigation system |
| CN105684833A (en) * | 2016-03-06 | 2016-06-22 | 孟红琳 | Active dredging type infiltrating irrigation device |
-
2009
- 2009-01-22 CN CN200920105333U patent/CN201371092Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010083765A1 (en) * | 2009-01-22 | 2010-07-29 | 中国水利水电科学研究院 | Device for preventing negative pressure of underground drip irrigation system and blockage of root system |
| CN102283080A (en) * | 2011-08-01 | 2011-12-21 | 中国农业科学院农田灌溉研究所 | Anti-biological clogging device for drip-irrigation system |
| CN102283080B (en) * | 2011-08-01 | 2012-10-03 | 中国农业科学院农田灌溉研究所 | Anti-biological clogging device for drip-irrigation system |
| CN105684833A (en) * | 2016-03-06 | 2016-06-22 | 孟红琳 | Active dredging type infiltrating irrigation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091230 Termination date: 20140122 |