CN2270356Y

CN2270356Y - Anti-blocking drip irrigation belt

Info

Publication number: CN2270356Y
Application number: CN 96220825
Authority: CN
Inventors: 苏维埃
Original assignee: SHANGHAI INST OF PLANT PHYSIOL
Current assignee: SHANGHAI INST OF PLANT PHYSIOL
Priority date: 1996-07-31
Filing date: 1996-07-31
Publication date: 1997-12-17
Anticipated expiration: 2006-07-31

Abstract

The utility model relates to an anti-block drip irrigation belt which is made of a thin film material. Two vertical edges of the utility model are overlapped and welded up or glued to form a main channel and an assistant channel. The assistant channel is welded up or glued every certain interval horizontally, and subsections are formed. The reserved portion without welding in both ends of each subsection forms a water inlet and a water outlet. An assistant channel wall is provided with ridge designs in the shape of a labyrinth. At least one layer of wall at the water inlet is provided with a ridge conduit, and especially, the overlapped thin films at the water inlet are not welded or glued completely, and the thin film walls corresponding to the water outlet are provided with bulges. The drip irrigation belt can prevent silt and plant roots from blocking the water inlet and the water outlet, with a selfpurging silt function and a low water quality requirement.

Description

A kind of anti-clogging irrigate band

The utility model relates generally to and is used for the used irrigate band of crops drip irrigation, relates to a kind of irrigate band that prevents blocking channels such as silt, crop root particularly.

Along with the development of industrialized agriculture technology, water saving, drip irrigation technique energy-conservation, that save manpower are subject to people's attention day by day.Compare with other irrigation technique, drip irrigation technique does not need to irrigate a large amount of water on crop, but the irrigate band is placed near the crop root place, thereby by the very little delivery port on the length of irrigate band only to the water droplet of crop root effusion right quantity, make the soil moistening, thereby promote plant growth, reduce the accumulation and the fertilizer loss of salinity in the soil simultaneously, and can economize on water, energy-conservation, have tangible advantage.

For this reason, various types of irrigate bands have been developed to adapt to the needs of drip irrigation technique.The micropore irrigate band is initial design, its no voltage stabilizing, pressure regulation and clear silt function, and water yield is big, pressure drop is big, so the water outlet uniformity is relatively poor, has limited use length, to account for the ratio of gross investment big in the investment of water source and water distribution part when being used for mechanical irrigation, and the design of distribution system caliber is complicated.Thereby, a class film irrigate band has appearred the late nineteen eighties, and a kind of is the irrigate band of Israel, and it is enclosed in the minisize maze water dropper in the film pipe racks, communicates (water inlet) other end logical extraneous (delivery port) in an end in labyrinth and the pipe; Another kind of is the film irrigate band of the U.S., the United States Patent (USP) the 5th that for example belongs to James C.Roberts, 318, go up the irrigate band of introducing No. 657, it becomes pipe by the film seaming, form another aquaporin between two longitudinal seams of two film laps, this passage vertically is being separated into joint by the horizontal position welding seam, on one side the not sealing reserved of weld seam partly makes main channel communicate with subaisle (water inlet), and in order to regulate factors such as water velocity, this water inlet generally makes less, and the part that the another side weld seam is reserved not sealing partly makes subaisle communicate with the external world (delivery port), and the subaisle wall between water inlet and the delivery port is labyrinth-like to play the step-down effect.This design tool step-down, pressure regulation, voltage stabilizing function.

Yet in the large tracts of land of reality was produced, still there were some defectives in above-mentioned irrigate band.For example, the irrigate band is embedded in when using under the soil, though its tiny water inlet can the bigger granule foreign of a filtering part, impurity such as silt in but can't the filtering water source, in case impurity enters water inlet arrival subaisle then can't therefrom remove, so to water source quality requirement height, and the delivery port that communicates with the external world has to change into traditional irrigation midway sometimes also easily by silt or crop root obstruction.

For overcoming above-mentioned defective, the purpose of this utility model is to provide a kind of anticlogging irrigate band, it can prevent that not only extraneous silt from entering the irrigate band and cramming from delivery port, and the silt that enters the labyrinth-like passage from water inlet is discharged in the main channel along with the variation of hydraulic pressure, thereby reduce greatly requirements in water quality, reach water saving, energy-conservation, the purpose that reduces production costs.

For this reason, the utility model provides a kind of anticlogging irrigate band, this irrigate band is for to be made by thin-film material, and its two longitudinal edges are stacked and sealing or gluing abreast with required width, and the film band constitutes the subaisle that forms between main channel and the seam by the two superimposed part thus; In addition, subaisle is with the horizontal or oblique sealing of required certain intervals or gluing and be separated into vertical sections; The not weldering of the reservation at place, described each sections two ends or sticking film portion and make subaisle communicate with the external world and form the mouth of a river so that subaisle communicates with the main channel and forms water inlet; Be formed with the ridge design of labyrinth-like on the subaisle wall between described water inlet and the delivery port; Be formed with the concavo-convex conduit of some at least one layer film of described water inlet; Its characteristics are: the film with concavo-convex conduit that described water inlet is overlapping does not weld fully or does not bond together; Position corresponding to the described delivery port outside on the described film surface is provided with projection.

Aforesaid irrigate band, its characteristics be, described irrigate band by fluid-tight flexibility light tight or slightly light transmissive material make.

Aforesaid irrigate band, its characteristics are that the projection on the film surface of the described delivery port outside is strip, and its size is corresponding with described delivery port size.

Compare with the irrigate band of prior art, be formed with concavo-convex conduit on the film band of the water inlet on the irrigate band of the present utility model, thereby when water entered the main channel of irrigate band under the hydraulic pressure higher state, the film of two superimposed was close to the tiny water inlet that concavo-convex conduit promptly constitutes many gap-like; Characteristics of the present utility model are, because the thin layer of this two superimposed does not weld or bonds together, when hydraulic pressure reduces, the film of this two superimposed promptly separately forms a relatively large hole, the foreign material such as silt that enter in subaisle with water inlet this moment can flow out from subaisle, to play the effect of self-cleaning silt, prevented the obstruction of subaisle, thereby also greatly reduce requirements in water quality, general water of river and lake slightly can use through filtering, and has reduced the production cost of industrialized agriculture significantly; Simultaneously characteristics of the present utility model also are, owing to be provided with projection on the film surface at delivery port place, thereby can stop that root system of crop or extraneous silt enter subaisle from delivery port, thereby the irrigate band can be imbedded in the soil use, have more practicality.

In order to further specify These characteristics of the present utility model and other advantage, below with reference to embodiment and accompanying drawing it is done detailed explanation, wherein:

Fig. 1 is the stereoscopic figure of a kind of embodiment in irrigate band of the present utility model;

Fig. 2 is the cross section enlarged diagram that cuts open along Fig. 1 center line A-A, is in the water inlet shape of high hydraulic pressure state with expression;

Fig. 3 and Fig. 2 are similar, and just expression is in the shape of water inlet when hanging down hydraulic pressure;

The schematic cross-section of Fig. 4 for cuing open along Fig. 1 center line E-E shows main channel and subaisle;

The schematic cross-section of Fig. 5 for cuing open along Fig. 1 center line B-B is with the expression water inlet;

The schematic cross-section of Fig. 6 for cuing open along Fig. 1 center line C-C is to express the mouth of a river.

See also shown in Figure 1, shown in the figure stereoscopic figure of a kind of embodiment of the utility model irrigate band, as seen from the figure, this irrigate band is made by fexible film band 1, this film band 1 has marginal portion I, the II of two relative longitudinal extensions, marginal portion I, II are overlapping with selected width according to actual needs, and the method by sealing or bonding connects and forms the seam 11,11 ' of two parallel longitudinals, thereby makes film band 1 comprise main channel 13 and be formed on subaisle 14 (referring to Fig. 4) between the seam.In addition, on the length of whole subaisle according to actual needs with horizontal or oblique sealing of certain spacing distance or bonding subaisle and subaisle 14 is divided into a plurality of independent sections III, the overlapping thin layer at place, the two ends of each sections III is sealing or bond together not fully, and forms the water inlet 15 that communicates with main channel 13 respectively and make subaisle 14 and delivery port 16 that the external world communicates; Be shaped on the ridge design conduit (referring to Fig. 2 and 3) of some on the thin film at water inlet 15 places, and be shaped on the ridge design 18 of some on the subaisle wall between water inlet and the delivery port, this decorative pattern can be two dimension or three-dimensional labyrinth-like; In addition, position corresponding to delivery port 16 on the film band also is provided with projection 19, this projection 19 is higher than delivery port, and the size of projection can be decided with the size of delivery port, enters delivery port and stops up it because of expelling water so can prevent silt or crop root in the soil.

In use, above-mentioned irrigate band be positioned over soil surface or soil down near the crop root place, when initial water flowing, because the double-layer films of water inlet of the present utility model is not close to, so water inlet is more refreshing, bigger granule foreign flows out delivery port with current in the water certainly; When normal water flowing, water enters the main channel 13 of irrigate band by the higher water source of hydraulic pressure, because the hydraulic pressure in this moment main channel 13 is close to behind the double-layer films pressurized of water inlet greater than the hydraulic pressure in the subaisle 14.The same with prior art, the concavo-convex conduit 17 of this moment constitutes many tiny imports (as shown in Figure 2), and water therefrom enters subaisle 14, via escaping into the soil from delivery port 16 with suitable speed behind the depressurization of the ridge design on the subaisle.In this process, but the bigger granule foreign of tiny import elimination part volume, but fine impurities such as silt still can enter subaisle.Characteristics of the present utility model also are when current cutout or hydraulic pressure decline, hydraulic pressure in the subaisle 14 is greater than the hydraulic pressure in the main channel 13, this moment, the two superimposed film of water inlet separated (as shown in Figure 3), several tiny imports become single bigger import, water in the part subaisle can return in the main channel through this orifice flow, the larger particles that may stay in the subaisle when silt wherein and water flowing just also flow back in the main channel 13 with current, thereby significantly reduced the blocked possibility of subaisle, thereby also significantly reduced requirements in water quality, facts have proved general water of river and lake as long as can use slightly after filtration, compare with the high water quality that prior art needs, greatly reduce production cost, as being equipped with the pulse type water system, its anti-clogging function more can play a role.

In addition, in the utility model, the irrigate band material therefor is waterproof, light tight or omits the flexible material of printing opacity, subaisle is stopped up.

Claims

1. anti-clogging irrigate band, this irrigate band be for to be made by thin-film material, and its two longitudinal edges are stacked and sealing or gluing abreast with required width, and the film band constitutes the subaisle that forms between main channel and the seam by the two superimposed part thus; In addition, subaisle is with the horizontal or oblique sealing of required certain intervals or gluing and be separated into vertical sections; The film section of the separation that place, described each sections two ends reserves makes subaisle communicate with the main channel respectively and forms water inlet, and subaisle is communicated with the external world and forms the mouth of a river; Be formed with the ridge design of labyrinth-like on the subaisle wall between described water inlet and the delivery port; Be formed with the concavo-convex conduit of some at least one layer film of described water inlet; It is characterized in that: the film with concavo-convex conduit that described water inlet is overlapping separates; Position corresponding to the described delivery port outside on the described film surface is provided with projection.

2. anti-clogging as claimed in claim 1 irrigate band is characterized in that, described irrigate band by fluid-tight flexibility light tight or slightly light transmissive material make.

3. anti-clogging as claimed in claim 1 irrigate band is characterized in that, the projection on the film surface of the described delivery port outside is strip, and its size is corresponding with described delivery port size.