DE2642623A1 - Hose for droplet or under-field watering - has spiral cross-section with spiral ends connected by expansible cross piece in which are outlets - Google Patents
Hose for droplet or under-field watering - has spiral cross-section with spiral ends connected by expansible cross piece in which are outletsInfo
- Publication number
- DE2642623A1 DE2642623A1 DE19762642623 DE2642623A DE2642623A1 DE 2642623 A1 DE2642623 A1 DE 2642623A1 DE 19762642623 DE19762642623 DE 19762642623 DE 2642623 A DE2642623 A DE 2642623A DE 2642623 A1 DE2642623 A1 DE 2642623A1
- Authority
- DE
- Germany
- Prior art keywords
- hose
- cross
- spiral
- section
- internal pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
- F16L11/121—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting specially profiled cross sections
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/06—Watering arrangements making use of perforated pipe-lines located in the soil
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Water Supply & Treatment (AREA)
- Environmental Sciences (AREA)
- Nozzles (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
Schlauch für Berieselungs- oder Begasungszwecke, Hose for sprinkling or fumigation purposes,
insbesondere für für Tropfchen- oder Unterfeldbewässerung Die Erfindung betrifft einen Schlauch für Berieselungs-oder Begasungszwecke, insbesondere für Tröpfchen- oder Unterfeldbewässerung.especially for drip or subsurface irrigation. The invention relates to a hose for sprinkling or fumigation purposes, in particular for Drip or sub-field irrigation.
Bekannte Regelschläuche (DOS 24 OO 797, DOS 24 55 885, DAS -24 27 569) haben bei Verwendung in Unterfeldbewässerungsanlagen die Nachteile, daß sie verstqpfungsanfällig sind und nur ungleichmässige Bewässerung erreichen lassen. Hinzu kommen meistens hoher Wasserverbrauch und große Herstellungs- und Wartungskosten. Anlagen mit porösen Schläuchen neigen in besonderem Maße zu Verstopfung und ungleichmässigem Druckverlauf. Known regulating hoses (DOS 24 OO 797, DOS 24 55 885, DAS -24 27 569) have the disadvantages when used in sub-field irrigation systems that they Are susceptible to clogging and only allow uneven watering to be achieved. In addition, there are usually high water consumption and high manufacturing and maintenance costs. Systems with porous hoses are particularly prone to blockages and irregularities Pressure curve.
Häufig entstehen Druckverluste deshalb, weil- der Schlauch den Druck des Bodens nicht aushält, so daß die Ausströmöffnungen zusammengedrückt werden.Pressure losses often arise because the hose is exerting pressure of the soil cannot withstand, so that the outflow openings are compressed.
Daher ist es Aufgabe der Erfindung, einen verbesserten Schlauch der genannten Art zu schaffen, der bei weitgehender Verminderung der Verstqpfungsgefahr den Austritt gleicher Wassermengen bei unterschiedlichen Drücken ermöglicht und der einfach aufgebaut sowie billig herstellbar ist. It is therefore an object of the invention to provide an improved hose of the to create the type mentioned, while largely reducing the risk of clogging allows the exit of the same amount of water at different pressures and which is simple in construction and inexpensive to manufacture.
Dies wird erfindungsgemäß dadurch erreicht, daß der Schlauchquerschnitt angenähert Spiralform hat, daß die Enden der Spirale durch einen dehnbaren Längssteg verbunden sind, der im drucklosen Zustand des Schlauches geschlossen ist und angenähert radial verläuft und bei zunehmendem Innendruck in Richtung einer peripheren Lage gebogen wird, und daß sich in Längsabständen in dem Steg jeweils ein Ausflußkanal mit einem MIttelbereich befindet, dessen Querschnitt sich bei Erhöhung des Innendrucks verkleinert. This is achieved according to the invention in that the hose cross-section approximately spiral shape has that the ends of the spiral by an expandable longitudinal web are connected, which is closed in the depressurized state of the hose and approximated runs radially and with increasing internal pressure in the direction of a peripheral layer is bent, and that there is an outflow channel at longitudinal intervals in the web with a central area, the cross-section of which changes when the internal pressure increases scaled down.
In der Zeichnung ist eine Ausführungsform des Schlauches nach der Erfindung als Beispiel veranschaulicht. Es zeigen: Fig.. 1 einen Querschnitt durch den Schlauch in der Mittelebene eines Ausflußkanals in drucklosem Zustand des Schlauches; und Fig. 2 einen der Fig. 1 entsprechenden Querschnitt des Schlauches bei Betriebsdruck. In the drawing is an embodiment of the hose according to the Invention illustrated as an example. They show: FIG. 1 a cross section through the hose in the center plane of an outflow channel in the unpressurized state of the hose; and FIG. 2 shows a cross section of the hose corresponding to FIG. 1 at operating pressure.
Das Profil des Schlauches Fig. 1 dehnt sich unter Innendruck, wie in Fig. 2 dargestellt. The profile of the hose Fig. 1 expands under internal pressure, such as shown in FIG.
Die Dehnung entsteht dadurch, daß die Umfangskräfte, die durch den Innendruck entstehen, den Längssteg 1 verbiegen. The elongation arises from the fact that the circumferential forces caused by the Internal pressure arise, bend the longitudinal web 1.
Das Maß der Dehnung kann durch die Höhe und Breite des Steges sowie durch die Elastizität des Materials bestimmt werden. The amount of stretch can be determined by the height and width of the web as well can be determined by the elasticity of the material.
Im Steg 1 ist in Längsrichtung in Abständen von beispielsweise 20 bis 50 cm jeweils ein Ausflußkanal 2 vorgesehen, der im drucklosen Zustand des Schlauches geschlossen ist und angenähert radial verläuft. Bei zunehmendem Druck dehnt sich der Steg 1 derart, daß sich der Ausflußkanal 2 an zwei Stellen verengt, die etwa zwischen der Mitte und dem entsprechenden radialen Ende des Steges 1 liegen. In diesem Bereich 3 wird der Querschnitt des Ausflußkanals 2 umso kleiner, je größer der Innendruck wird. So wird erreicht, daß bei unterschiedlichen Drücken die gleichen Wassermengen austreten.In the web 1 is in the longitudinal direction at intervals of, for example, 20 Up to 50 cm each one outflow channel 2 is provided, which is in pressureless State of the hose is closed and runs approximately radially. With increasing Pressure stretches the web 1 in such a way that the outflow channel 2 extends in two places narrows approximately between the center and the corresponding radial end of the web 1 lie. In this area 3, the cross section of the outflow channel 2 becomes smaller, the greater the internal pressure becomes. So it is achieved that at different pressures the same amounts of water come out.
Verunreinigungen, die vor dem verkleinerten Querschnitt im Bereich 3 hängen bleiben, werden bei geringerem Druck, das bedeutet vergrößerter Ausflußquerschnitt, herausgespült. Impurities in front of the reduced cross-section in the area 3 get stuck, are at lower pressure, that means increased outflow cross-section, washed out.
Der Schlauch kann aus Kautschuk oder Kunststoff, vorzugsweise PVC, bestehen. The hose can be made of rubber or plastic, preferably PVC, exist.
Der Schlauch nach der Erfindung kann mit Vorteil in Unterfeld bewässerungsanlagen für Flächenkulturen verwendet werden; die einen wahlweise anschaltbaren Druckluftanschluß zum periodischen Reinigen des Schlauchsystems, als Regelorgane wirkende, örtliche Feuchtigkeitsmesser zur programmierten Regelung der Bewässerungsintensität und/oder einen Anschluß zum Beimischen von boden- und pf3a-nzenspezifischer Nährlösung zum Wasser in leistungsoptimal programmierter Dosierung aufweisen können. The hose according to the invention can be used with advantage in sub-field irrigation systems used for land crops; an optionally switchable compressed air connection for periodic cleaning of the hose system, local ones acting as regulating organs Moisture meter for programmed regulation of the watering intensity and / or a connection for adding soil- and plant-specific nutrient solution to the Can have water in a performance-optimally programmed dosage.
Lee rs eiteLee on the side
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762642623 DE2642623A1 (en) | 1976-09-22 | 1976-09-22 | Hose for droplet or under-field watering - has spiral cross-section with spiral ends connected by expansible cross piece in which are outlets |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762642623 DE2642623A1 (en) | 1976-09-22 | 1976-09-22 | Hose for droplet or under-field watering - has spiral cross-section with spiral ends connected by expansible cross piece in which are outlets |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2642623A1 true DE2642623A1 (en) | 1978-03-23 |
Family
ID=5988552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19762642623 Pending DE2642623A1 (en) | 1976-09-22 | 1976-09-22 | Hose for droplet or under-field watering - has spiral cross-section with spiral ends connected by expansible cross piece in which are outlets |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2642623A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0297907A1 (en) * | 1987-07-03 | 1989-01-04 | Paloheimo Oy | Plastics drainage pipe and manufacture thereof |
US5318657A (en) * | 1988-02-16 | 1994-06-07 | Roberts James C | Drip irrigation tape and method of manufacture |
DE19608230A1 (en) * | 1995-05-11 | 1996-11-14 | Weth Nikolaus Dipl Kaufm | Process and cross-sectional tube for the evenly metered delivery and absorption of liquids, gases and fluids |
-
1976
- 1976-09-22 DE DE19762642623 patent/DE2642623A1/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0297907A1 (en) * | 1987-07-03 | 1989-01-04 | Paloheimo Oy | Plastics drainage pipe and manufacture thereof |
US5318657A (en) * | 1988-02-16 | 1994-06-07 | Roberts James C | Drip irrigation tape and method of manufacture |
DE19608230A1 (en) * | 1995-05-11 | 1996-11-14 | Weth Nikolaus Dipl Kaufm | Process and cross-sectional tube for the evenly metered delivery and absorption of liquids, gases and fluids |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OAM | Search report available | ||
OC | Search report available | ||
OHJ | Non-payment of the annual fee |