CN103858730B - micro-nano bubble oxygenation drip irrigation system and method - Google Patents
micro-nano bubble oxygenation drip irrigation system and method Download PDFInfo
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- CN103858730B CN103858730B CN201410089776.5A CN201410089776A CN103858730B CN 103858730 B CN103858730 B CN 103858730B CN 201410089776 A CN201410089776 A CN 201410089776A CN 103858730 B CN103858730 B CN 103858730B
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- 230000002262 irrigation Effects 0.000 title claims abstract description 38
- 238000003973 irrigation Methods 0.000 title claims abstract description 36
- 238000006213 oxygenation reaction Methods 0.000 title claims abstract description 34
- 239000002101 nanobubble Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 96
- 239000007789 gas Substances 0.000 claims abstract description 43
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 31
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 19
- 239000001301 oxygen Substances 0.000 claims description 19
- 229910052760 oxygen Inorganic materials 0.000 claims description 19
- 230000000694 effects Effects 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 9
- 239000003621 irrigation water Substances 0.000 claims description 7
- 230000008602 contraction Effects 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 description 9
- 241000196324 Embryophyta Species 0.000 description 5
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- WURBVZBTWMNKQT-UHFFFAOYSA-N 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)butan-2-one Chemical compound C1=NC=NN1C(C(=O)C(C)(C)C)OC1=CC=C(Cl)C=C1 WURBVZBTWMNKQT-UHFFFAOYSA-N 0.000 description 1
- 235000021537 Beetroot Nutrition 0.000 description 1
- 244000241257 Cucumis melo Species 0.000 description 1
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 1
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- 241000233866 Fungi Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 description 1
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- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
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- 229920006395 saturated elastomer Polymers 0.000 description 1
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Classifications
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The present invention relates to a kind of micro-nano bubble oxygenation drip irrigation system and method, system comprises water inlet manifold, water inlet manifold two branch roads in parallel, and the first branch road connects water pump, vacuum tank and tubing pump successively; First branch road is a nozzle inserted into the inner at vacuum tank entrance point, and vacuum tank top arranges a pressure maintaining valve; Tubing pump export pipeline establishes manometer; Connection traffic control valve and manometer successively on second branch road; Two branch roads merge into outfall sewer; First branch road is positioned at unit fixed on water pump suction place and connects air pump outlet by magnetic valve, and air pump import is by connecting pure oxygen source and ozone source respectively; Check valve and gas flowmeter is set gradually between pure oxygen source and air pump; Check valve and gas flowmeter is set gradually between ozone source and air pump; Tubing pump electrical connection frequency conversion tank, frequency conversion tank is electrically connected distribution box by magnetic valve, distribution box electrical connection Programmable Logic Controller; Flow control valve, manometer, another manometer, magnetic valve, another magnetic valve, gas flowmeter, another gas flowmeter, water pump, tubing pump and distribution box are electrically connected Programmable Logic Controller respectively.
Description
Technical field
The present invention relates to a kind of drip irrigation system and method, particularly about one micro-nano bubble oxygenation drip irrigation system and method.
Background technology
The Integration of Water into Fertilizer is the most effective a kind of irrigation method of current drought and water-scarce area, and water, fertilizer needed for crop are together applied to crop root, and for water saving joint, fertile and volume increase has achieved good effect.Development and the application of China's the Integration of Water into Fertilizer have developed into the quite ripe stage, want improve the quality and yield of fruit further and further increase the effect of water saving, joint fertilizer, need to seek new method.
The root system of crop needs sufficient oxygen to carry out aerobic respiration to maintain the metabolism of self and growing of whole plant.Root system anoxic can cause root respiration to weaken, and is converted to anaerobic respiration by aerobic respiration, and root growth stops, and ion migration slows down, and root system liquid runs off and controls, and then affects growth and the output of whole crop.Lot of domestic and foreign scholar proposes oxygenation drip irrigation system exploratoryly, is added in irrigation water by oxygen together with fertilizer, effectively can alleviate root district anoxic problem.At present, oxygen source mainly concentrates on air-source and pure oxygen source two kinds of forms, pure oxygen source better effects if, volume increase and upgrading effect more obvious, but the method for gas injection bubble commonly used at present is comparatively greatly, and the time of preserving in soil is short, and utilization ratio is low.Some scholars is also in order to strengthen the persistence of oxygenation, proposition utilizes the micro-nano gas of pure oxygen to carry out oxygenation drip irrigation, such as: Chinese patent CN202823183U discloses irrigation water oxygen increasing equipment, for increasing the dissolved oxygen amount of source of irrigation water, with air or pure oxygen for oxygen source, obtaining good effect, is a good try.But, can only the oxygenation of water supply source, cannot directly access irrigation conduit and directly use, the aerobic microbiological in irrigation and nutrient solution and some algae also can be made to grow fast, the risk of irrigator blocking can be increased like this.
On the other hand, the sterilization effect of ozone has been obtained in a lot of industry applies widely, and it almost all has obvious inactivating efficacy to all germs, virus, mould, fungi and protozoon, egg capsule, cuts sterilization time, rapidly incomparably.Ozone dissolved forms Ozone Water in water, almost can all harmful materials in dissipation water, can also decomposing organic matter and algae removal etc.; Ozone Water can carry out sterilizing, anti-corrosive fresh-keeping to gourd, fruit and vegetable, meat, removes peculiar smell, has the function that degraded melon and fruit, vegetable surface remain phosphorous agricultural chemicals simultaneously.While adopting Ozone Water can be soil supplemental oxygen as oxygen source, also can have good control action to the blocking of solution irrigator, but adopt micro-nano ozone bubbles also can produce certain impact to structure of soil microbial community.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of micro-nano bubble oxygenation drip irrigation system and the method that pure oxygen and ozone are organically combined reach oxygenation, sterilization and resist stifled effect.
For achieving the above object, the present invention takes following technical scheme: a kind of micro-nano bubble oxygenation drip irrigation system, it is characterized in that, it comprises a water inlet manifold, the water side of described water inlet manifold is connected in parallel the first branch road and the second branch road, and described first branch road connects a water pump, a vacuum tank and a tubing pump successively by pipeline; Described first branch road is a nozzle inserted into the inner at the entrance point of described vacuum tank, and the top of described vacuum tank arranges a pressure maintaining valve; The export pipeline of described tubing pump is arranged a manometer; Described second branch road connects successively a flow control valve and another manometer; Described first branch road and described second branch road merge into an outfall sewer; The import department that described first branch road is positioned at described water pump connects a gas delivery side of pump by a magnetic valve, and the import of described air pump connects a pure oxygen source and an ozone source respectively by pipeline; Pipeline between described pure oxygen source and described air pump sets gradually a check valve and a gas flowmeter; Pipeline between described ozone source and described air pump sets gradually another check valve and another gas flowmeter; Described tubing pump is electrically connected a frequency conversion tank, and described frequency conversion tank is electrically connected a distribution box by another magnetic valve, and described distribution box is electrically connected a Programmable Logic Controller; Described flow control valve, manometer, another manometer, magnetic valve, another magnetic valve, gas flowmeter, another gas flowmeter, water pump, tubing pump and distribution box are electrically connected described Programmable Logic Controller respectively.
Described water inlet manifold is provided with a total flow sensor tube, described first branch road is provided with a bypass flow sensor, described total flow sensor tube and bypass flow sensor are electrically connected described Programmable Logic Controller respectively.
Described nozzle adopts 90 ° of bending structures, and wherein horizontal segment is straight tubular structure, and vertical section is the structure to spout end convergent, and the cross section of constriction is rectangle or circle; Diameter after described nozzle contraction is 1/6 ~ 1/3 of described first bypass line diameter.
The length of described nozzle contraction part is 2 ~ 4 millimeters.
A kind of micro-nano bubble oxygenation drip irrigation method, it comprises the following steps:
1) booster air pump, Controlled by Programmable Controller solenoid valve conduction, the check valve on the check valve opened on pure oxygen source pipeline or ozone source pipeline is selected according to concrete drip irrigation situation, gas enters the first branch road under the effect of air pump, import department at water pump tentatively mixes with water, gas flowmeter in the respective line be connected with corresponding oxygen source is measured the gas flow that oxygen source provides in real time, and by measurement result Real-time Feedback to Programmable Logic Controller; Air-water mixture is through water pump and the pipeline connecting exit of pump, and enter vacuum tank and ejected by nozzle, namely the gas in the air-water mixture ejected be micro/nano level;
2), after pressure maintaining valve carries out pressure regulation to stable water pressure to the air-water mixture in vacuum tank, air-water mixture flows out from vacuum tank outlet, and via tubing pump flow ipe delivery side of pump pipeline;
3) manometer on tubing pump export pipeline and another manometer on the second branch road carry out pressure measxurement and by measurement feedback to Programmable Logic Controller simultaneously, another solenoid valve conduction of Controlled by Programmable Controller, control frequency conversion tank frequency conversion again, to make tubing pump, pressure regulation is carried out to the water via tubing pump, until the pressure in tubing pump outlet pipeline is equal with the pressure in the second branch road 4;
4) air-water mixture in tubing pump outlet pipeline and the water in the second branch road converge, enter outfall sewer, the water flowed out by outfall sewer contains pure oxygen or the ozone of micro/nano level, this oxygenated water can be irrigated crop, when the measurement result display oxygen-adding amount that gas flowmeter feeds back to Programmable Logic Controller reaches predetermined value, Controlled by Programmable Controller closed electromagnetic valve, stops oxygenation in dripping irrigation water.
The present invention is owing to taking above technical scheme, it has the following advantages: 1, the present invention's micro-nano bubble oxygenation drip irrigation system proposes the micro-nano bubble emergence pattern that pure oxygen source and ozone source combine, considered the quick oxygenation of system short-term and long-lasting between harmony and increasing yield and improving quality and control block up between harmony, it is stifled etc. multi-functional to integrate water saving, volume increase, upgrading, control.2, the present invention adopts the nozzle based on simple restrictive orifice outgas principle, significantly improve the fragmentation degree of bubble, the gas-vapor mix uniformity, and in conjunction with steam mixed stable voltage tank and frequency conversion blower pump for pipeline, ensure the stable of system working pressure, achieve the connection of micro-nano bubble oxygen-enrichment system with drip irrigation system.3, the present invention proposes suitable micro-nano bubble oxygenation drip irrigation method, and in conjunction with automatic control system, Programmable Logic Controller parameter preset can be passed through, realization automatic adjustment Different Crop and crop to adding oxygen concentration, oxygen source proportioning, improve the adaptability of system for different object in different growing.
Accompanying drawing explanation
Fig. 1 is present system structural representation;
Fig. 2 is nozzle arrangements schematic diagram of the present invention;
Fig. 3 is nozzle schematic top plan view of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 1, the present invention proposes a kind of micro-nano bubble oxygenation drip irrigation system, it comprises a water inlet manifold 1, and water inlet manifold 1 is arranged a total flow sensor tube 2, the water side of water inlet manifold 1 is connected in parallel two branch roads 3,4.First branch road 3 connects bypass flow sensor 5, water pump 6, vacuum tank 7 and a tubing pump 8 successively by pipeline; First branch road 3 is a nozzle inserted into the inner 9 at the entrance point of vacuum tank 7, and the top of vacuum tank 7 arranges a pressure maintaining valve 10, the export pipeline of tubing pump 8 is arranged a manometer 11.Second branch road 4 connects successively flow control valve 12 and another manometer 13.Two branch roads 3,4 converge formation one outfall sewer 14.
The import department that first branch road 3 is positioned at water pump 6 connects the outlet of an air pump 16 by magnetic valve 15, the import of air pump 16 connects pure oxygen source 17 and an ozone source 18 respectively by pipeline.Pipeline between pure oxygen source 17 and air pump 16 sets gradually check valve 19 and a gas flowmeter 20; Pipeline between ozone source 18 and air pump 16 sets gradually another check valve 21 and another gas flowmeter 22.
The present invention also comprises a converter plant, and converter plant comprises a distribution box 23, and distribution box 23 is electrically connected a frequency conversion tank 24 by another magnetic valve 26, and frequency conversion tank 24 is electrically connected tubing pump 8.
The present invention is also provided with a set of control device, and this control device comprises a Programmable Logic Controller 25; Total flow sensor tube 2, bypass flow sensor 5, flow control valve 12, manometer 13, another manometer 11, magnetic valve 15, another magnetic valve 26, gas flowmeter 20, another gas flowmeter 22 are electrically connected Programmable Logic Controller 25 respectively; The gauge tap of water pump 6, tubing pump 8 and distribution box 23 is electrically connected Programmable Logic Controller 25 respectively.
In above-described embodiment, Programmable Logic Controller 25 can adopt wired or wireless mode with the electrical connection of each calutron, each sensor.
In above-described embodiment, as shown in Figure 2 and Figure 3, nozzle 9 can adopt 90 ° of bending structures, and wherein horizontal segment is straight tubular structure, and vertical section is the structure to spout end convergent, and the cross section of constriction is rectangle or circle.Diameter after nozzle 9 shrinks is 1/6 ~ 1/3 of the first bypass line diameter.The length of nozzle 9 constriction is good with 2 ~ 4mm.The design of nozzle 9 is application simple restrictive orifice outgas principles, just refers to be diminished by caliber in the suitable place of pipeline, and when liquid is through reducing, a fluid stream can attenuate or shrink.The minimum cross section of a fluid stream appears at the downstream of actual reducing, is called vena contracta.At vena contracta place, flow velocity is maximum, and the increase of flow velocity is along with the reduction greatly of vena contracta place pressure.When a fluid stream expansion enters larger region, speed declines, and pressure increases, but downstream pressure can not return to the pressure of upstream completely, and this is due to the result compared with large inner turbulent flow and energy ezpenditure.If the pressure at vena contracta place drops to below the saturated vapour pressure under liquid corresponding temperature, just have steam in a fluid stream and be dissolved in the gas effusion in water, form the small bubble of steam and gas and vapor permeation, pressure is lower, and steam bubble is more.According to bernoulli principle, gas liquid mixture speed becomes large, and pressure diminishes, and gas and liquid now can mix again.
In the micro-nano bubble oxygenation drip irrigation system described in above-described embodiment, the part be made up of water pump 6, air pump 16, pure oxygen source 17, check valve 19, gas flowmeter 20, ozone source 18, another check valve 21, another gas flowmeter 22, Programmable Logic Controller 25, vacuum tank 7, tubing pump 8, distribution box 23 and frequency conversion tank 24, be the device producing micro-nano bubble, can be described as micro-nano bubble generator.The operation principle of micro-nano bubble generator with process is: water and gas tentatively mix in the water inlet of water pump 6, air-water mixture is through nozzle 9(simple restrictive orifice outgas principle) by water body supercharging, in the air-water mixture ejected, namely gas be micro/nano level, the water body pressure sprayed increases suddenly, aqueous vapor is made to reach abundant mixing, then being stored in vacuum tank 7(coordinates pressure maintaining valve 10 that hydraulic pressure can be made significantly to reduce) in, tubing pump 8 is controlled by frequency conversion tank 24 via tubing pump 8() pressure regulation, pressure in first branch road 3 and the second branch road 4 are consistent, therefore this device can directly apply with irrigation system stem among.
The invention allows for a kind of micro-nano bubble oxygenation drip irrigation method utilizing above-mentioned micro-nano bubble oxygenation drip irrigation system to carry out drip irrigation, the method controls whole system by Programmable Logic Controller 25 and runs, and whole process comprises the following steps:
1) booster air pump 16, the conducting of Programmable Logic Controller 25 Controlling solenoid valve 15, the check valve 21 on the check valve 19 opened on pure oxygen source 17 pipeline or ozone source 18 pipeline is selected according to concrete drip irrigation situation, gas (pure oxygen or ozone) enters the first branch road 3 under the effect of air pump 16, import department at water pump 6 tentatively mixes with water, gas flowmeter 20,22 in the respective line be connected with corresponding oxygen source is measured the gas flow that oxygen source provides in real time, and by measurement result Real-time Feedback to Programmable Logic Controller 25; Air-water mixture is through water pump 6 and the pipeline connecting water pump 6 outlet, and enter vacuum tank 7 and ejected by nozzle 9, namely the gas in the air-water mixture ejected be micro/nano level.
2), after the air-water mixture in pressure maintaining valve 10 pairs of vacuum tanks 7 carries out pressure regulation to stable water pressure, air-water mixture exports from vacuum tank 7 and flows out, and via the export pipeline of tubing pump 8 flow ipe pump 8.
3) manometer 11 on tubing pump 8 export pipeline and the manometer 13 on the second branch road 4 carry out pressure measxurement and by measurement feedback to Programmable Logic Controller 25 simultaneously, Programmable Logic Controller 25 controls another magnetic valve 26 conducting, control frequency conversion tank 24 frequency conversion again, to make tubing pump 8, pressure regulation is carried out to the water via tubing pump 8, until the pressure in tubing pump 8 outlet pipeline is equal with the pressure in the second branch road 4.
4) air-water mixture in tubing pump 8 outlet pipeline and the water in the second branch road 4 converge, enter outfall sewer 14, the water flowed out by outfall sewer 14 contains pure oxygen or the ozone of micro/nano level, this oxygenated water can be irrigated crop, when the measurement result display oxygen-adding amount that gas flowmeter 20,22 feeds back to Programmable Logic Controller 25 reaches predetermined value, Programmable Logic Controller 25 Controlling solenoid valve 15 is closed, and stops oxygenation in dripping irrigation water.
In above-mentioned oxygenation drip irrigation process, distribution box 23 provides electric power for whole system, before system cloud gray model in Programmable Logic Controller 25 parameters, now another magnetic valve 26 is closed condition, after system starts to current when the tubing pump 8, another manometer 11 starts to have reading and by result feedback to Programmable Logic Controller 25, after Programmable Logic Controller 25 receives this signal, control another magnetic valve 26 to open, frequency conversion tank 24 start working control tubing pump 8 carry out pressure regulation.
In above-mentioned oxygenation drip irrigation process, total flow sensor tube 2 can to the flow Real-Time Monitoring in water inlet manifold 1, bypass flow sensor 5 can to the flow Real-Time Monitoring in the first branch road 3, flow value is fed back to Programmable Logic Controller 25 by total flow sensor tube 2 and bypass flow sensor 5, Programmable Logic Controller 25 with the flow value obtained for according to control flow check adjustable valve 12 to adjust the flow-rate ratio of the first branch road 3 and the second branch road 4, and then adjust the oxygen concentration entering into the dripping irrigation water of outfall sewer 14.In addition, it is noted that due to the safety problem of pure oxygen source 17 and ozone source 18, each manual unlocking check valve 19,20 when applying, the used time does not keep check valve 19,20 to close.
Here is a specific embodiment: adopt the inventive method to carry out oxygenation subsurface drip irrigation cultivation to land for growing field crops spring corn.
Kind selected " capital single 28 ", plants in Beijing suburb, every mu of field planting 3175 strain.Soil pH is 6.0, and quality is light loam, and soil nutrient content is medium.The oxygenation drip irrigation scheme adopted is in table 1.
Table 1 land for growing field crops spring corn drip irrigation aerating scheme
According to the present invention's micro-nano bubble oxygenation drip irrigation method operational system, aerating pattern applies with certain proportion for adding pure oxygen, pure oxygen and ozone.First time after planting pours water final stage, and applying solvability is the Ozone Water of 10%, carries out sterilizing in soil; Seeding stage is improve survival rate to add the pure oxygen that solvability is 25%; Only add pure oxygen when pouring water, the concentration of oxygen gas according to 50% is with whole water-pouring process; At typhon mouth phase and grouting parameter, coordinate with pure oxygen and ozone and apply, first submicron bubble generator is passed through to oxygenation in water, until the solvability of oxygen in water reaches 50%, then irrigate, pouring water, final stage ozone generator fills ozone in water, until ozone dissolved degree reaches 10%, remove part irrigator blocking material with this, finally use clear water flushing pipe again.
Carry out oxygenation in the spring corn seeding stage, survival rate is 97%; Carry out aerating at tri-leaf period, shooting stage and size trumpet period, making plant strain growth and control group than shifting to an earlier date 7-9 days, making the yield and quality of fruit reach best in grouting parameter aerating.Obtain result compared with existing same kind spring corn, gross yield increase by 30%, average fruit spike length increase by 10% and single fruit weight increase by 25%, and community soil is fluffy, and corn beetroot yield increases 15%.
The various embodiments described above are only applicable to the present invention is described.Because irrigation program is relevant with factors such as soil, crop, the initial nutrient content of soil, cultivation mode and output, the analysis of each factor should be carried out before practical application, make the irrigation program with optimum.
The various embodiments described above are only for illustration of the present invention; structure, the connected mode and the method for operation etc. of each parts wherein in system all can change to some extent; every equivalents of carrying out on the basis of technical solution of the present invention and improvement, all should not get rid of outside protection scope of the present invention.
Claims (5)
1. a micro-nano bubble oxygenation drip irrigation system, it is characterized in that, it comprises a water inlet manifold, and the water side of described water inlet manifold is connected in parallel the first branch road and the second branch road, and described first branch road connects a water pump, a vacuum tank and a tubing pump successively by pipeline; Described first branch road is a nozzle inserted into the inner at the entrance point of described vacuum tank, and the top of described vacuum tank arranges a pressure maintaining valve; The export pipeline of described tubing pump is arranged a manometer; Described second branch road connects successively a flow control valve and another manometer; Described first branch road and described second branch road merge into an outfall sewer;
The import department that described first branch road is positioned at described water pump connects a gas delivery side of pump by a magnetic valve, and the import of described air pump connects a pure oxygen source and an ozone source respectively by pipeline; Pipeline between described pure oxygen source and described air pump sets gradually a check valve and a gas flowmeter; Pipeline between described ozone source and described air pump sets gradually another check valve and another gas flowmeter;
Described tubing pump is electrically connected a frequency conversion tank, and described frequency conversion tank is electrically connected a distribution box by another magnetic valve, and described distribution box is electrically connected a Programmable Logic Controller; Described flow control valve, manometer, another manometer, magnetic valve, another magnetic valve, gas flowmeter, another gas flowmeter, water pump, tubing pump and distribution box are electrically connected described Programmable Logic Controller respectively.
2. micro-nano bubble oxygenation drip irrigation system as claimed in claim 1, it is characterized in that, described water inlet manifold is provided with a total flow sensor tube, described first branch road is provided with a bypass flow sensor, described total flow sensor tube and bypass flow sensor are electrically connected described Programmable Logic Controller respectively.
3. micro-nano bubble oxygenation drip irrigation system as claimed in claim 1 or 2, it is characterized in that, described nozzle adopts 90 ° of bending structures, and wherein horizontal segment is straight tubular structure, and vertical section is the structure to spout end convergent, and the cross section of constriction is circular; Diameter after described nozzle contraction is 1/6 ~ 1/3 of described first bypass line diameter.
4. micro-nano bubble oxygenation drip irrigation system as claimed in claim 3, is characterized in that, the length of described nozzle contraction part is 2 ~ 4 millimeters.
5. use a micro-nano bubble oxygenation drip irrigation method for system according to any one of Claims 1 to 4, it comprises the following steps:
1) booster air pump, Controlled by Programmable Controller solenoid valve conduction, the check valve on the check valve opened on pure oxygen source pipeline or ozone source pipeline is selected according to concrete drip irrigation situation, gas enters the first branch road under the effect of air pump, import department at water pump tentatively mixes with water, gas flowmeter in the respective line be connected with corresponding oxygen source is measured the gas flow that oxygen source provides in real time, and by measurement result Real-time Feedback to Programmable Logic Controller; Air-water mixture is through water pump and the pipeline connecting exit of pump, and enter vacuum tank and ejected by nozzle, namely the gas in the air-water mixture ejected be micro/nano level;
2), after pressure maintaining valve carries out pressure regulation to stable water pressure to the air-water mixture in vacuum tank, air-water mixture flows out from vacuum tank outlet, and via tubing pump flow ipe delivery side of pump pipeline;
3) manometer on tubing pump export pipeline and another manometer on the second branch road carry out pressure measxurement and by measurement feedback to Programmable Logic Controller simultaneously, another solenoid valve conduction of Controlled by Programmable Controller, control frequency conversion tank frequency conversion again, to make tubing pump, pressure regulation is carried out to the water via tubing pump, until the pressure in tubing pump outlet pipeline is equal with the pressure in the second branch road (4);
4) air-water mixture in tubing pump outlet pipeline and the water in the second branch road converge, enter outfall sewer, the water flowed out by outfall sewer contains pure oxygen or the ozone of micro/nano level, this oxygenated water can be irrigated crop, when the measurement result display oxygen-adding amount that gas flowmeter feeds back to Programmable Logic Controller reaches predetermined value, Controlled by Programmable Controller closed electromagnetic valve, stops oxygenation in dripping irrigation water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410089776.5A CN103858730B (en) | 2014-03-12 | 2014-03-12 | micro-nano bubble oxygenation drip irrigation system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410089776.5A CN103858730B (en) | 2014-03-12 | 2014-03-12 | micro-nano bubble oxygenation drip irrigation system and method |
Publications (2)
| Publication Number | Publication Date |
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| CN103858730A CN103858730A (en) | 2014-06-18 |
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