CN204443453U - A kind of high stability Negative pressure irrigation device - Google Patents
A kind of high stability Negative pressure irrigation device Download PDFInfo
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- CN204443453U CN204443453U CN201420869783.2U CN201420869783U CN204443453U CN 204443453 U CN204443453 U CN 204443453U CN 201420869783 U CN201420869783 U CN 201420869783U CN 204443453 U CN204443453 U CN 204443453U
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- negative pressure
- pipe
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- pressure control
- water
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Abstract
The utility model relates to a kind of high stability Negative pressure irrigation device, comprise an airtight water tank, water tank inside is provided with a blowdown pipe, blowdown pipe extend into the bottom of water tank, the top of water tank is provided with the gas supplementing opening that adds water, the bottom of water tank is connected with negative pressure controller by the first outlet pipe, negative pressure controller comprises some pressure control extra heavy pipes, every root pressure control extra heavy pipe inside is provided with water supply tubule, the water inlet of water supply tubule passes the bottom of pressure control extra heavy pipe and is connected with water tank, be in parallel by water supply tubule between pressure control extra heavy pipe, the delivery port of water supply tubule extend into the top of pressure control extra heavy pipe, the top of pressure control extra heavy pipe is provided with filler, the bottom of pressure control extra heavy pipe is connected with multitube connector by the second outlet pipe, multitube connector is communicated with imbibition device by tube connector, described imbibition device is embedded in soil.Negative pressure irrigation device height of the present utility model is not more than one meter, and structure is simple and facilitate adjustable, and negative pressure luffing is minimum.
Description
Technical field
The utility model relates to a kind of high stability Negative pressure irrigation device, belongs to field of agricultural irrigation.
Background technology
Negative pressure subsurface irrigation technology is a kind of novel water-saving initiatively irrigation technique proposed for greenhouse pot culture crop.This technology in basin bottom, utilizes crop water physiological property and soil suction characteristic by buried for irrigator, makes moisture in irrigator automatically infiltrate soil, thus form negative pressure in water-supply-pipe.Under atmospheric pressure, water is pressed into from water-feed the moisture that water-supply-pipe carrys out to flow into Supplement irrigation device soil, thus ensures that whole system is run incessantly, realizes crop to the continuous automatic acquisition of moisture, passive irrigation is become and initiatively irrigate.In Negative pressure irrigation system, the horizontal plane depth displacement between water-feed and irrigator determines the water supply suction of negative pressure subirrigation system.
Negative pressure irrigation is compared with other many irrigation techniques, one best at present beyond doubt, can at every moment provide one to be similar to air-conditioning character for dry crop grows in soil, comparatively suitable soil moisture environment, thus obtain the agricultural product of high quantity and high-quality.In fact such environment is not rarely seen at natural world, just suitable soil moisture environment can be provided for crop when subterranean water level is suitable, only along with the increase of transpiration quantity and the change of subterranean water level, moisture minimizing or too much in underground water supply soil, thus cause soil exsiccation, change flood, be no longer applicable to plant growth.Both like this, so adjust soil subterranean water level just passable to appropriate depth, but be often difficult in practice realize, particularly carrying out potted plant metering among a small circle in irrigation tests research, need water storage device to be put in operator to manage and observe position easily, imbibition device for examination is embedded in the different depth lower than water storage device, changes the malleation head on surface into suction head.Although existing Negative pressure irrigation device has the device that can realize this function, or device is complicated, and negative pressure luffing is large, or needs to use electric control gear, not only has energy consumption, and there is potential safety hazard.
Utility model content
The utility model provides a kind of method of high stability Negative pressure irrigation device and Negative pressure irrigation thereof, solves the problem such as distance, inconvenient operation of existing Negative pressure irrigation device complexity, water storage device and imbibition device.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of high stability Negative pressure irrigation device, comprise an airtight water tank, described water tank inside is provided with a blowdown pipe, described blowdown pipe extend into the bottom of water tank, the top of water tank is provided with the gas supplementing opening that adds water, the bottom of water tank is connected with negative pressure controller by the first outlet pipe, described negative pressure controller comprises some pressure control extra heavy pipes, every root pressure control extra heavy pipe inside is provided with water supply tubule, the water inlet of water supply tubule passes the bottom of pressure control extra heavy pipe and is connected with water tank, be in parallel by water supply tubule between pressure control extra heavy pipe, the delivery port of described water supply tubule extend into the top of pressure control extra heavy pipe, the top of described pressure control extra heavy pipe is provided with filler, the bottom of pressure control extra heavy pipe is connected with multitube connector by the second outlet pipe, described multitube connector is communicated with imbibition device by tube connector, described imbibition device is embedded in soil.
Further, a kind of preferred version of the present utility model is: described water tank is provided with liquid level gauge.
Further, a kind of preferred version of the present utility model is: the bottom of described pressure control extra heavy pipe is provided with drainpipe.
Further, a kind of preferred version of the present utility model is: described multitube connector is the container that there is blow vent a upper end, and upper vessel portion stretches out many tube connectors, and tube connector is connected with imbibition device.
Further, a kind of preferred version of the present utility model is: described multitube connector top is provided with exhaust outlet.
Further, a kind of preferred version of the present utility model is: described imbibition device is the pipe of one end sealing taking porous ceramics as material making, and pipe hollow is used as water stream channel.
The beneficial effects of the utility model:
Negative pressure irrigation device of the present utility model overcomes the not high and negative pressure of existing Negative pressure irrigation device suction head and to fluctuate large defect, be achieved by the quantity and the water level adjusted in pressure control extra heavy pipe that increase negative pressure controller, overcome suction head fluctuation large, blunt to pressure change, utilize malleation head to offset the surface tension of water supply tubule delivery port, make its to pressure change very sensitivity be achieved.
Negative pressure irrigation device of the present utility model is without power supply, and device height is not more than one meter, and structure is simple but it can realize the negative pressure value being several times as much as its height, and facilitates adjustable, and simple to operate, negative pressure luffing is minimum.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of Negative pressure irrigation device of the present utility model;
Fig. 2 is the structural representation of water tank in Fig. 1 and negative pressure controller;
Fig. 3 is the structural representation of the imbibition device in Fig. 1;
In figure, 1. water tank, 2. blowdown pipe, 3. liquid level gauge, 4. add water gas supplementing opening, 5. filler, 6. water supply tubule, 7. pressure control extra heavy pipe, 8. the first outlet pipe, 9. drainpipe, 10. the second outlet pipe, 11. multitube connectors, 12. exhaust outlets, 13. tube connectors, 14. imbibition devices, 15. blast pipes.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As Figure 1-3, a kind of high stability Negative pressure irrigation device, comprise an airtight water tank 1, water tank 1 inside is provided with a blowdown pipe 2, blowdown pipe 2 extend into the bottom of water tank 1, the top of water tank 1 is provided with the gas supplementing opening 4 that adds water, the bottom of water tank 1 is connected with negative pressure controller by the first outlet pipe 8, negative pressure controller comprises some pressure control extra heavy pipes 7, every root pressure control extra heavy pipe 7 inside is provided with water supply tubule 6, be in parallel by water supply tubule 6 between pressure control extra heavy pipe 7, the water inlet of water supply tubule 6 passes the bottom of pressure control extra heavy pipe 7 and is connected with water tank 1, the delivery port of water supply tubule 6 extend into the top of pressure control extra heavy pipe 7, the top of pressure control extra heavy pipe 7 is provided with filler 5, the bottom of pressure control extra heavy pipe 7 is connected with multitube connector 11 by the second outlet pipe 10, multitube connector 11 is communicated with imbibition device 14 by tube connector 13, imbibition device 14 is embedded in soil.
Negative pressure irrigation device of the present utility model can obtain required Negative Pressure Difference by the Rational structure arranging negative pressure controller, and in general installation process, water tank 1 is highly no more than one meter, and negative pressure controller height a little less than water tank 1, and is fixed on water tank 1.Each root pressure control extra heavy pipe 7, can provide the Negative Pressure Difference being equivalent to pressure control extra heavy pipe 7 length about 90%, by the quantity of adjustment pressure control extra heavy pipe, can conveniently obtain required Negative Pressure Difference.
Preferably: water tank 1 is provided with liquid level gauge 3.Arrange liquid level gauge 3 can conveniently observe in water tank 1 liquid level change, conveniently record duty.
Preferably: the bottom of pressure control extra heavy pipe 7 is provided with drainpipe 9, the convenient water-column regulated in pressure control extra heavy pipe 7, is used for the water in emptying pressure control extra heavy pipe time device is no.
Preferably: multitube connector 11 is the container that there is blow vent a upper end, and upper vessel portion stretches out many tube connectors 13, and tube connector 13 is connected with imbibition device 14.Adopt such structure, can pass through multitube connector 11, multiple imbibition device 14 is in parallel, and each imbibition device 14 is independent of each other, and the gas leakage of indivedual imbibition device 14 causes the out-of-work situation of whole system to avoid system to occur.
Preferably: multitube connector 11 top is provided with exhaust outlet 12.
Preferably: imbibition device 14 is the pipe of one section of sealing of material making for porous ceramics, and the inside of pipe is provided with the cavity as water stream channel, and the openend of pipe, by rubber stopper seal, rubber stopper is provided with blast pipe 15.Be connected with tube connector 13 by rubber stopper during use.The structure of imbibition device 14 and the pot clay end of suction type tensiometer similar, operation principle: imbibition device 14 has many small spaces, after being flooded profit, forms water membrane in hole.When after the whole water-filling of the hole in imbibition device 14, in hole, water just has tension force, and this tension force can ensure water under a certain pressure by imbibition device 14, but stops air to pass through.When being full of water and the undersaturated soil of moisture imbedded by the imbibition device 14 of sealing, moisture film just couples together with the soil water, the contact in generation waterpower.When the flow of water of soil system is unequal, water is just flowed to flow of water lower by imbibition device 14 by flow of water eminence, till the flow of water balance of the systems of two.
Running of the present utility model: connected by Negative pressure irrigation device, is buried in the earth being full of water in imbibition device 14 before multitube connector 11 and imbibition device 14 being communicated with; Or first imbibition device 14 is buried in the earth, carries out bleeding water-filling from blast pipe 15, comprise the following steps:
(1) open the exhaust outlet that adds water above water tank 1, when water is filled it up with in tank, close with plug the gas supplementing opening 4 that adds water;
(2) filler 5 above negative pressure controller is opened, in pressure control extra heavy pipe 7, add water to the negative pressure height rear enclosed filler 5 should be able to satisfied the demand in its space, the drainpipe 9 below pressure control extra heavy pipe 7 and the second outlet pipe 10 in the process that adds water, will be kept to be in folder death situation state;
(3) added water, find equalization point when whole device normally works, concrete grammar is: open the second outlet pipe 10, by slight curving for the second outlet pipe 10 spout part, second outlet pipe 10 mouth of pipe is slowly moved down, water flows out under gravity in pipe, along with the outflow of water, negative pressure is formed in pressure control extra heavy pipe 7, water passes through the first outlet pipe 8 supply to water supply tubule 6 from water tank 1 again, water can fall into pressure control extra heavy pipe 7 after arriving water supply tubule 6 top, observe second outlet pipe 10 mouth of pipe like flowing water again not flowing water time state, this position is equilbrium position when device normally works, the delivery port of water tank 1 is the peak suction height that can control to the distance of this position,
(4) after finding this equilbrium position, multitube connector 11 is fixedly placed in this position, and is communicated with the second outlet pipe 10, multitube connector 11 is communicated with imbibition device 14 by tube connector 13, carries out Negative pressure irrigation.
Negative pressure irrigation device of the present utility model is achieved by the quantity and the water-column adjusted in pressure control extra heavy pipe 7 increasing negative pressure controller, overcome suction head fluctuation large, utilize malleation head to offset the surface tension of water supply tubule 6 delivery port, make its to pressure change very sensitivity be achieved.
Negative pressure irrigation device of the present utility model is without power supply, and device height is not more than one meter, and structure is simple but it can realize the negative pressure value being several times as much as its height, and facilitates adjustable, and simple to operate, negative pressure luffing is minimum.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. a high stability Negative pressure irrigation device, it is characterized in that: comprise an airtight water tank, described water tank inside is provided with a blowdown pipe, described blowdown pipe extend into the bottom of water tank, the top of water tank is provided with the gas supplementing opening that adds water, the bottom of water tank is connected with negative pressure controller by the first outlet pipe, described negative pressure controller comprises some pressure control extra heavy pipes, every root pressure control extra heavy pipe inside is provided with water supply tubule, the water inlet of water supply tubule passes the bottom of pressure control extra heavy pipe and is connected with water tank, be in parallel by water supply tubule between pressure control extra heavy pipe, the delivery port of described water supply tubule extend into the top of pressure control extra heavy pipe, the top of described pressure control extra heavy pipe is provided with filler, the bottom of pressure control extra heavy pipe is connected with multitube connector by the second outlet pipe, described multitube connector is communicated with imbibition device by tube connector, described imbibition device is embedded in soil.
2. a kind of high stability Negative pressure irrigation device according to claim 1, is characterized in that: described water tank is provided with liquid level gauge.
3. a kind of high stability Negative pressure irrigation device according to claim 1, is characterized in that: the bottom of described pressure control extra heavy pipe is provided with drainpipe.
4. a kind of high stability Negative pressure irrigation device according to claim 1, is characterized in that: described multitube connector is the container that there is blow vent a upper end, and upper vessel portion stretches out many tube connectors, and tube connector is connected with imbibition device.
5. a kind of high stability Negative pressure irrigation device according to claim 4, is characterized in that: described multitube connector top is provided with exhaust outlet.
6. a kind of high stability Negative pressure irrigation device according to any one of claim 1-5, is characterized in that: described imbibition device is the pipe of one end sealing taking porous ceramics as material making, and pipe hollow is used as water stream channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420869783.2U CN204443453U (en) | 2014-12-31 | 2014-12-31 | A kind of high stability Negative pressure irrigation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420869783.2U CN204443453U (en) | 2014-12-31 | 2014-12-31 | A kind of high stability Negative pressure irrigation device |
Publications (1)
| Publication Number | Publication Date |
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| CN204443453U true CN204443453U (en) | 2015-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420869783.2U Withdrawn - After Issue CN204443453U (en) | 2014-12-31 | 2014-12-31 | A kind of high stability Negative pressure irrigation device |
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| Country | Link |
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| CN (1) | CN204443453U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104542189B (en) * | 2014-12-31 | 2016-08-17 | 中国农业科学院农田灌溉研究所 | A kind of high stability Negative pressure irrigation device and the method for Negative pressure irrigation thereof |
| 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 |
-
2014
- 2014-12-31 CN CN201420869783.2U patent/CN204443453U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104542189B (en) * | 2014-12-31 | 2016-08-17 | 中国农业科学院农田灌溉研究所 | A kind of high stability Negative pressure irrigation device and the method for Negative pressure irrigation thereof |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150708 Effective date of abandoning: 20160817 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20150708 Effective date of abandoning: 20160817 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |