CN101563999A - Negative-pressure pipeline type filtration irrigation device - Google Patents
Negative-pressure pipeline type filtration irrigation device Download PDFInfo
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- CN101563999A CN101563999A CNA200910074650XA CN200910074650A CN101563999A CN 101563999 A CN101563999 A CN 101563999A CN A200910074650X A CNA200910074650X A CN A200910074650XA CN 200910074650 A CN200910074650 A CN 200910074650A CN 101563999 A CN101563999 A CN 101563999A
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Abstract
The invention provides a negative-pressure pipeline type filtration irrigation device which relates to the technical field of farmland watering. The filtration irrigation device comprises a water storage vessel, the upper part of which is provided with a water-replenishing mechanism and a pressure-regulating device; the lower part of the water storage vessel is communicated with the water inlet end of a water-percolating device; the water outlet end of the water-percolating device is communicated with the upper part of the water storage vessel; a water-percolating apparatus is arranged on the water-percolating device; and the pressure-regulating device is an external-connection-type water column pressure-regulating apparatus or pressure-regulating valve. The invention has the advantages of overcoming the shortages of the prior art, being capable of leading the irrigation water to be maintained within the soil layer range where the plant root system is the most active, thereby minimizing soil surface evaporation and deep seepage, saving water and energy, and reducing labor intensity, being capable of fixing the water irrigation amount and speed according to the water demand law of plants, and achieving scientific water supply; and the invention also has the advantages of simple structure, convenient operation and use, unique principle, stable work and wide application scope, and thus can generate greater economic and social benefits.
Description
Technical field
The present invention relates to sprinkling technique field, farmland.
Background technology
China is the country that land resources and freshwater resources all quite lack, and in order to solve the agriculture irrigation water saving problem, the applicant had once applied for " negative pressure is oozed control slight irrigation device " patent, and publication number is CN2870448Y.This device is the low pressure of channelization, trace infiltrating irrigation equipment, characteristics are: utilized to have the ground atmospheric pressure naturally, negative pressure, the mutual balance of water colunm pressure and soil suction and five kinds of power of seepage controllor retention ability, cause air inlet to close and open just as one " automatic switch " is continuous, this switch can make water adding system work automatically on principle, can make the stable setting range that remains on of soil moisture content, help realizing according to the soil moisture automatic irrigation, but on concrete device, still exist soil moisture content control inaccurate, pressure regulation is inaccurate, inconvenient (needing in the hole, to adjust), slowly reach problems such as job insecurity the Time Created of normal operating conditions.
Summary of the invention
The purpose of this invention is to provide a kind of negative-pressure pipeline type filtration irrigation device, can make irrigation water remain on the most active soil layer scope of root system of plant, from reducing evaporation of soil table and deep percolation to greatest extent, water saving, energy-conservation, reduce labor intensity, can determine irrigation quantity and speed according to the plant law of needing the water, the realization science supplies water, and it is simple in structure, easy for operation, and pressure regulation is accurately convenient, the principle uniqueness, it is more stable, applied widely to work, and can produce the bigger economic and social benefit that gets.
Main technical schemes of the present invention is: a kind of negative-pressure pipeline type filtration irrigation device, the top that comprises tank, tank is provided with water compensation mechanism and regulator, the water inlet of the bottom of tank and infiltration device is communicated with, the water side of infiltration device and the top of tank are communicated with, the infiltration device is provided with seepage controllor, it is characterized in that regulator is circumscribed water column pressure regulator or pressure regulating valve.
The preferred construction of described circumscribed water column pressure regulator can for: have the closed vertical tube, the top of closed vertical tube is provided with the sealing diaphragm plate, the closed vertical tube is divided into upper chamber and lower header two parts, upper chamber is provided with the gap by the hole on the sealing diaphragm plate and interior vertical tube and lower header connection between the bottom of interior vertical tube lower end and closed vertical tube; The bottom of closed vertical tube and top seal top that adds the water vertical tube and the bottom connection that adds the water plug with band respectively by the pipe of band valve, the back communicating pipe at the top of closed vertical tube and atmosphere are communicated with, the ventilation surge pipe that the top of lower header is communicated with, above structure has constituted 1 grade of formula pressure regulator; The ventilation surge pipe is inserted in the tank or and tank formation sealing linker structure.
The structure of described circumscribed water column pressure regulator also can be: connecting in proper order in the back of 1 grade of formula pressure regulator is added with 1 grade, 2 grades, the pressure-adjusting type structure more than 3 grades or 3 grades, the back communicating pipe at the top of closed vertical tube and the top of next stage lower header are communicated with, and the like, thereby constitute multi-stage pressure regulating formula structure.
The structure of described circumscribed water column pressure regulator also can have: the formula structure that is in parallel of the pressure-adjusting type structure more than 2 or 2.
Described seepage controllor is a ceramic porous seepage controllor, aperture＜5 μ m, and technical requirement is under-30kPa pressure, and it is air tight to seep water, for good.
Described tank can be water storage tank type or duct type.
The water circulating pipe that is parallel with band water circulating pump and valve between the water inlet of described infiltration device and water side is good.
Good effect of the present invention is: the deficiency that has overcome prior art, can make irrigation water remain on the most active soil layer scope of root system of plant, from reducing evaporation of soil table and deep percolation to greatest extent, water saving, energy-conservation, reduce labor intensity, can determine irrigation quantity and speed according to the plant law of needing the water, the realization science supplies water, and it is simple in structure, easy for operation, and pressure regulation is accurately convenient, the principle uniqueness, it is more stable, applied widely to work, and can produce the bigger economic and social benefit that gets.
Be described further below in conjunction with embodiment and accompanying drawing, but not as a limitation of the invention.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Among Fig. 1, each label implication is: 1. tank, 2. valve, 3. water circulating pipe, 4. infiltration device, 41. seepage controllors, (42. seepage controllor) water inlet, 43. (seepage controllor) water side, 44. valves, 5. water circulating pump, 6. circumscribed water column pressure regulator, 61. closed vertical tubes, 62. valve, 63. valves, 64. add the water vertical tube, 65. interior vertical tube, 66. sealing adds the water plug, 67. valves, 68. back communicating pipes, 69. valve, 610. upper chamber, 611. sealing diaphragm plates, 612. lower headers, 613. ventilation surge pipe, 7. water compensation mechanism.
Embodiment
See Fig. 1, this negative-pressure pipeline type filtration irrigation device, comprise tank 1, the top of tank 1 is provided with water compensation mechanism 7 (can be sealing-plug or other forms of water controller) and regulator, the water inlet 42 of the bottom of tank 1 and infiltration device 4 is communicated with, the water side 43 of infiltration device 4 and the top of tank 1 are communicated with, infiltration device 4 (can many parallel connection or series connection) is provided with seepage controllor 41, regulator is that (its structure is: pressure regulating valve is by valve body and screw rod is housed for circumscribed water column pressure regulator 6 or pressure regulating valve, parts such as the sealing valve pad of spring and adjusting nut are formed, adjusting nut can change the pressure of spring to the sealing valve pad, the sealing valve pad is opened atmospheric pressure air admission type structure when negative pressure is greater than spring pressure in the device, be loaded on the top of tank 1, figure slightly).One gas spring valve is arranged,, promptly open the structure of air inlet etc.) when the air pressure of the inside during less than setting.The structure of circumscribed water column pressure regulator 6 is: have closed vertical tube 61, the top of closed vertical tube 61 is provided with sealing diaphragm plate 611, closed vertical tube 61 is divided into upper chamber 610 and lower header 612 two parts, upper chamber 610 is provided with the gap by the hole on the sealing diaphragm plate 611 and interior vertical tube 65 and lower header 612 connections between the bottom of interior vertical tube 65 lower ends and closed vertical tube 61; The bottom of closed vertical tube 61 and top seal top that adds water vertical tube 65 and the bottom connection that adds water plug 66 with band respectively by the pipe of band valve 62,67, back communicating pipe 68 at the top of closed vertical tube 61 (or passing through valve) and atmosphere are communicated with, the ventilation surge pipe 613 that the top of lower header 612 is communicated with, above structure has constituted 1 grade of formula pressure regulator; Ventilation surge pipe 613 is inserted into (and being provided with the gap between the bottom) or and tank 1 formation sealing linker structure in the tank 1.Be added with 2 grades of formula pressure regulators in proper order in the back of 1 grade of formula pressure regulator, the back communicating pipe 68 at the top of closed vertical tube 61 and the top of next stage lower header are communicated with, and the like, thereby 3 grades of formula pressure regulators of structure (also can be in parallel or, to strengthen the water percolating capacity demand, not shown in the figures).Seepage controllor 41 is a ceramic porous seepage controllor, aperture＜5 μ m, and technical requirement is under-30kPa pressure, and it is air tight to seep water.Tank 1 is water storage tank type or duct type.The water inlet 42 of infiltration device 4 and 43 of water sides are parallel with the water circulating pipe 3 of band water circulating pump 5 and valve 2.
Be that whole water adding system is made of airtight, open and three parts that circulate.The function of open portion is the negative pressure of regulation and control irrigation system, is used for controlling soil moisture content.The critical piece of cyclic part is special-purpose water circulating pump, with the closed conduit system connectivity.Circulating pump is except solving quick exhausting problem, and another effect is exactly in the future after adding fertilizer in the water tank, is used for quick mixing fertilizer, makes the fertilizer fast supply to each plant root.
This device use course of work and points for attention are as follows:
(1), automatic water-supply.Divide and to add water, airtight, negative pressure forms and four steps of duty
1., valve 2,63,69 keeps closed conditions, valve 44,62,68 stays open state, opens filler 7, with water receiver 1 topped up with water.At this moment, the airtight part of water adding system is opened to the outside world, and water is by water-supply-pipe 4, and seepage controllor 41 flows to perpendicular breather pipe 43.Water receiver 1 all is in identical horizontal plane with the water level of vent stack 16, because the upper end of perpendicular breather pipe is higher than the top of water receiver, water can not flow back to water receiver 1.
2., with water filling port 7 sealing, the airtight part and the ambient atmosphere of system are isolated, and at this moment have only pressure regulator air inlet pipe 68 to be communicated with atmosphere.
3., seepage controllor 41 begins lasting outwards infiltration, the interior water level depression of water receiver (1), generation negative pressure and increase gradually.Water receiver 1 and vent stack 43 are airtight, all are under the identical condition of negative pressure, and water level still remains on same level.The air inlet pipe 65 of pressure regulator is in open state, constantly descends at the water level of inside and outside differential pressure effect lower inlet duct 65.Three pressure regulators of connecting among Fig. 1 belong to three grades of pressure regulation, the pressure regulation effect that adds up, so negative pressure equals the accumulated value of air inlet pipe 613,65 lower port and water receiver 1 and each pressure regulator water level discrepancy in elevation in the system.
4., irrigation device enters normal operating conditions.When the water level of three grades of pressure regulator air inlet pipe 65 is reduced to lower port, the airtight part of device is communicated with atmosphere.Outside air enters water receiver 1 top with bubble form, causes negative pressure value to reduce, and water is with the air inlet pipe lower port sealing of water receiver 1, and the closed state of airtight part is set up once more.Seepage controllor 41 continues to exosmose, thereby causes the negative pressure value of airtight part to increase once more, and device is communicated with and air inlet once more with atmosphere, so circulation, and the negative pressure of water receiver 1 just is stabilized in certain level, can infinitely not increase.As can be seen, air inlet pipe 65,613 lower port of device are stably kept negative pressure in the water receiver just as the automatic valve of opening and closing constantly.Air inlet pipe 65 lower port of terminal pressure regulator are the zero level datum marks of device.The effect of pressure regulator is exactly to have risen to more than the ground the zero level datum mark is virtual, and this just provides very big convenience for the practical application of negative pressure accurate filtration irrigation technology.
(2), control soil water content
1., saturated soil water content control
Regulate the water level of pressure regulator 6, make A1, A2, A3 accumulated value add that B equals C, just equal zero level is set to and seepage controllor 41 contour (D=0), seepage controllor 41 is operated in zero hydraulic pressure state, the soil water absorbing force that surrounding soil obtains moisture is approximately zero, and all water absorbing forces all can be full of by water greater than zero interstices of soil, and soil moisture content stably remains on saturation state, at this moment the suitable field capacity of soil moisture content does not have free flowable gravitational water.
2., the unsaturated water content control of soil
Water level in the rising pressure regulator 6 makes A1, A2, and the A3 accumulated value adds that B is greater than C.This just is equivalent to the zero level datum mark has been arranged on the position lower than seepage controllor 41, at this moment, D＜0, seepage controllor 41 is operated in negative hydraulic pressure state, and surrounding soil must lean on the water absorbing force of self from table water to be pulled.The high more zero level of pressure regulator 6 water levels is low more, and the soil degree of unsaturation is big more, and soil moisture content is just low more.Some pressure controller polyphones use, and pressure control act as cumulative effects, can strengthen the control range of soil moisture content.
3., soil supersaturation water content control
Open with the whole emptyings of the water in the pressure regulator 6 or with pressure regulator valve 69, pressure regulators at different levels were lost efficacy, only the air inlet pipe in water receiver 1 613 plays the pressure regulation effect, A1, A2 and A3 are equal to zero, the position of zero level is just at air inlet pipe 613 lower port places, at this moment zero level is higher than seepage controllor 41, D＞0, seepage controllor 41 is operated in anasarca with shortness of breath pressure condition, bear on the seepage controllor 41 and highly equal the D water colunm pressure, water flows out from seepage controllor 41 naturally, produces under the free flowable gravitational water in the soil around and blends horizontal runoff, and this situation just is equivalent to common drip irrigation.
(3), device circulating exhaust
Under normal pressure, be dissolved with air in the water, these air can be separated out under the negative pressure state, can form air bubble in pipe for osmotic irrigation.The existence of air bubble has been blocked water receiver 1 to the continuous water tension force between the seepage controllor 41, directly influences the duty of negative pressure accurate filtration irrigation device, therefore must solve exhausting problem in actual applications.The design of EGR is for addressing this problem, and the course of work is as follows.Valve-off 44 is opened valve 2, water receiver 1, and water-supply-pipe 4 and circulating pump 5 are formed a closed circuit, and the pumping source of fetching boiling water can carry out the exhaust work of pipeline.EGR also has other important function, fertilizer or agricultural chemicals can be added in the water receiver, open EGR, can be rapidly fertilizer or agricultural chemicals evenly be supplied to plant utilization in system's control range.
(4), the accurate irrigation system of this negative pressure is by water supply installation, irrigation device, negative pressure adjusting device, low pressure, the micro-infiltrating irrigation equipment of the channelization that EGR four parts are formed.The characteristics that negative pressure is oozed the control micro irrigation technology are: 1. automatic irrigation.Utilized the mutual balance that has ground atmospheric pressure, negative pressure, water colunm pressure and soil suction and five kinds of power of seepage controllor retention ability naturally, cause air inlet to close and open just as one " automatic switch " is continuous, this on-off action can guarantee that water adding system works automatically, the process of pouring water and irrigation quantity are controlled by the water requirement of plant mainly, and soil moisture content is stablized remained on setting range, realized according to the soil moisture automatic irrigation.2. by adjusting the zero level datum mark, can regulate the hydraulic pressure that seepage controllor bears, and then the water content of control soil, guarantee to carry out the optimum moisture supply according to the plant law of needing the water.3. this irrigation rig is simple in structure, need not power, and is economical and practical, really realized saving water and energy.
Claims (7)
1, a kind of negative-pressure pipeline type filtration irrigation device, the top that comprises tank (1), tank (1) is provided with water compensation mechanism (7) and regulator, the water inlet (42) of the bottom of tank (1) and infiltration device (4) is communicated with, the water side (43) of infiltration device (2) and the top of tank (1) are communicated with, infiltration device (4) is provided with seepage controllor (41), it is characterized in that regulator is circumscribed water column pressure regulator (6) or pressure regulating valve.
2, negative-pressure pipeline type filtration irrigation device according to claim 1, the structure that it is characterized in that described circumscribed water column pressure regulator (6) is: have closed vertical tube (61), the top of closed vertical tube (61) is provided with sealing diaphragm plate (611), closed vertical tube (61) is divided into upper chamber (610) and lower header (612) two parts, upper chamber (610) is provided with the gap by the hole on the sealing diaphragm plate (611) and interior vertical tube (65) and lower header (612) connection between the bottom of interior vertical tube (65) lower end and closed vertical tube (61); The bottom of closed vertical tube (61) and top seal top that adds water vertical tube (64) and the bottom connection that adds water plug (66) with band respectively by the pipe of band valve (62,67), the back communicating pipe (68) at the top of closed vertical tube (61) and atmosphere are communicated with, the top of lower header (612) is communicated with ventilation surge pipe (613), and above structure has constituted 1 grade of pressure-adjusting type structure; Ventilation surge pipe (613) is inserted in the tank (1) or and tank (1) formation sealing linker structure.
3, negative-pressure pipeline type filtration irrigation device according to claim 2, the structure that it is characterized in that described circumscribed water column pressure regulator (6) is: connecting in proper order in the back of 1 grade of formula pressure regulator is added with 1 grade, 2 grades, the pressure-adjusting type structure more than 3 grades or 3 grades, the back communicating pipe (68) at the top of closed vertical tube (61) and the top of next stage lower header are communicated with, and the like, thereby constitute multi-stage pressure regulating formula structure.
4, negative-pressure pipeline type filtration irrigation device according to claim 3 is characterized in that the structure of described circumscribed water column pressure regulator (6) has: the formula structure that is in parallel of the pressure-adjusting type structure more than 2 or 2.
5, negative-pressure pipeline type filtration irrigation device according to claim 1 is characterized in that described seepage controllor (41) is a ceramic porous seepage controllor, aperture＜5 μ m, and technical requirement is under-30kPa pressure, and it is air tight to seep water.
6, negative-pressure pipeline type filtration irrigation device according to claim 1 is characterized in that described tank (1) is water storage tank type or duct type.
7,, it is characterized in that being parallel with between the water inlet (42) of described infiltration device (4) and water side (43) water circulating pipe (3) of band water circulating pump (5) and valve (2) according to claim 1,2,3,4,5 or 6 described negative-pressure pipeline type filtration irrigation devices.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910074650XA CN101563999B (en) | 2009-06-05 | 2009-06-05 | Negative-pressure pipeline type filtration irrigation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910074650XA CN101563999B (en) | 2009-06-05 | 2009-06-05 | Negative-pressure pipeline type filtration irrigation device |
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| CN101563999A true CN101563999A (en) | 2009-10-28 |
| CN101563999B CN101563999B (en) | 2012-07-25 |
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| CN200910074650XA Expired - Fee Related CN101563999B (en) | 2009-06-05 | 2009-06-05 | Negative-pressure pipeline type filtration irrigation device |
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Cited By (9)
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| CN103563718A (en) * | 2013-11-18 | 2014-02-12 | 郝福生 | Automatic micro-drop irrigation system |
| CN103651047A (en) * | 2013-12-20 | 2014-03-26 | 中国农业科学院农田灌溉研究所 | Self-filtering negative-pressure irrigation device |
| CN105850662A (en) * | 2016-05-18 | 2016-08-17 | 中国农业科学院农业资源与农业区划研究所 | Novel energy-consumption-free negative pressure regulation system |
| CN105850331A (en) * | 2016-05-18 | 2016-08-17 | 中国农业科学院农业资源与农业区划研究所 | Water and fertilizer integrated greenhouse cucumber negative-pressure irrigation system |
| CN106417638A (en) * | 2016-04-01 | 2017-02-22 | 淮南徽旺豆制品设备销售有限公司 | Yuba production apparatus based on slurry returning system hydraulic pressure |
| CN106416964A (en) * | 2016-10-26 | 2017-02-22 | 中国农业科学院农业资源与农业区划研究所 | Constant negative pressure irrigation system |
| CN107306688A (en) * | 2017-08-10 | 2017-11-03 | 南京林业大学 | A kind of miniature circuit board of pteridophyte liquid manure oxygen |
| CN110447516A (en) * | 2019-09-06 | 2019-11-15 | 北京益康农科技发展有限公司 | A kind of Negative pressure irrigation system |
| CN114027062A (en) * | 2021-10-28 | 2022-02-11 | 青岛农业大学 | Intelligent water fertilizer pesticide gas decision method for greenhouse matrix cultivation |
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| CN108513896B (en) * | 2018-03-13 | 2021-03-26 | 中国农业科学院农业资源与农业区划研究所 | System for realize malleation and negative pressure irrigation |
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- 2009-06-05 CN CN200910074650XA patent/CN101563999B/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103563718A (en) * | 2013-11-18 | 2014-02-12 | 郝福生 | Automatic micro-drop irrigation system |
| CN103651047A (en) * | 2013-12-20 | 2014-03-26 | 中国农业科学院农田灌溉研究所 | Self-filtering negative-pressure irrigation device |
| CN103651047B (en) * | 2013-12-20 | 2015-04-29 | 中国农业科学院农田灌溉研究所 | Self-filtering negative-pressure irrigation device |
| CN106417638A (en) * | 2016-04-01 | 2017-02-22 | 淮南徽旺豆制品设备销售有限公司 | Yuba production apparatus based on slurry returning system hydraulic pressure |
| CN105850331B (en) * | 2016-05-18 | 2019-03-01 | 中国农业科学院农业资源与农业区划研究所 | Water-fertilizer integral greenhouse cucumber Negative pressure irrigation system |
| CN105850331A (en) * | 2016-05-18 | 2016-08-17 | 中国农业科学院农业资源与农业区划研究所 | Water and fertilizer integrated greenhouse cucumber negative-pressure irrigation system |
| CN105850662B (en) * | 2016-05-18 | 2019-03-01 | 中国农业科学院农业资源与农业区划研究所 | A kind of Non-energy-consumption negative pressure regulating system |
| CN105850662A (en) * | 2016-05-18 | 2016-08-17 | 中国农业科学院农业资源与农业区划研究所 | Novel energy-consumption-free negative pressure regulation system |
| CN106416964A (en) * | 2016-10-26 | 2017-02-22 | 中国农业科学院农业资源与农业区划研究所 | Constant negative pressure irrigation system |
| CN107306688A (en) * | 2017-08-10 | 2017-11-03 | 南京林业大学 | A kind of miniature circuit board of pteridophyte liquid manure oxygen |
| CN107306688B (en) * | 2017-08-10 | 2022-09-30 | 南京林业大学 | Pteridophyte water, fertilizer and oxygen miniature integrated board |
| CN110447516A (en) * | 2019-09-06 | 2019-11-15 | 北京益康农科技发展有限公司 | A kind of Negative pressure irrigation system |
| CN114027062A (en) * | 2021-10-28 | 2022-02-11 | 青岛农业大学 | Intelligent water fertilizer pesticide gas decision method for greenhouse matrix cultivation |
| CN114027062B (en) * | 2021-10-28 | 2023-01-24 | 青岛农业大学 | Intelligent water fertilizer pesticide gas decision method for greenhouse matrix cultivation |
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