CS216869B1

CS216869B1 - Cuff dropper

Info

Publication number: CS216869B1
Application number: CS899380A
Authority: CS
Inventors: Dusan Huska; Pavol Kabina; Michal Kulka
Original assignee: Dusan Huska; Pavol Kabina; Michal Kulka
Priority date: 1980-12-18
Filing date: 1980-12-18
Publication date: 1982-11-26

Abstract

Vynález rieši kvapkovač s nastavitelnou výtokovou kapacitou na závlahovom potrubí, ktorý spadá svojím využitím do odboru polnohospodárskych meliorácií a výrobou do plastikářského priemyslu. Kvapkovač je tvořený manžetou z plastickej hmoty, do ktorej jej jednej steny je vytvarovaná kapilárna rýha v tvare Spirály alebo je hadovite usporiadaná a sice tak, že jeden jej koniec je vyvedený na okraj manžety (viď obr. 2). Manžeta sa ovinie a upevní okolo závlahového potrubia v mieste výtokového otvoru na potrubí. Po přilnutí na stenu závlahového potrubia uzatvorí sa kapilárna rýha po celej dížke až na výtok z kapitály na jednom okraji manžety. Otáčaním manžety po obvode závlahového potrubia možno nastavit výtokový otvor zo závlahového potrubia tak, aby dráha vytekajúcej vody vo vytvorenej kapiláře bola bud dlhšia alebo kratšia, čo umožňuje následkom změny hydraulických strát dosiahnuť požadované výtokové množstvo vody z kvapkovača.The invention solves a dripper with adjustable discharge capacity on an irrigation pipe, which falls by its use into the field of agricultural land improvement and production into the plastics industry. The dripper is made of a plastic sleeve, into one of whose walls a capillary groove is formed in the shape of a spiral or is arranged in a serpentine manner, namely in such a way that one of its ends is brought out to the edge of the sleeve (see Fig. 2). The sleeve is wrapped and fixed around the irrigation pipe at the location of the discharge opening on the pipe. After adhering to the wall of the irrigation pipe, the capillary groove is closed along the entire length up to the outlet from the capillary on one edge of the sleeve. By rotating the cuff around the circumference of the irrigation pipe, the outlet opening from the irrigation pipe can be adjusted so that the path of the flowing water in the created capillary is either longer or shorter, which allows the desired outflow amount of water from the dripper to be achieved as a result of changing the hydraulic losses.

Description

The invention addresses the dropper with adjustable discharge capacity on the irrigation pipe, which is used in the agricultural amelioration and plastics industry.

The dropper is formed by a plastic cuff in which a spiral-shaped capillary groove is formed into one of its walls, or serpentine, such that one end thereof extends to the edge of the cuff (see FIG. 2). The cuff is wrapped and fastened around the irrigation pipe at the outlet of the pipe. After adhering to the wall of the irrigation pipe, the capillary groove closes all the way down to the outlet of the capillary at one edge of the cuff. By rotating the cuff over the circumference of the irrigation pipe, the outlet opening can be adjusted from the irrigation pipe so that the flow of the flowing water in the formed capillary is either longer or shorter, allowing the desired outflow of water from the dripper to be achieved due to a change in hydraulic losses.

216 869 216 869 (54) Cuff dropper 1

The invention addresses the drip irrigation pipeline, which is used in the field of agricultural amelioration and production in the plastics industry.

The dropper is a basic drop irrigation component that supplies water to the irrigated plant in the form of drops. The most widely used dropper designs are based on the principle of reducing the flow rate from the hole in the irrigation pipe due to hydraulic losses through the flow of water through the capillary. The inherent dripper thus consists of a capillary tube made of plastic material usually rolled up into a spiral that is inserted into a hole in the irrigation line. The diameter, length and curvature of the capillary tube then determine the size of the hydraulic losses and thus the intensity of the water outflow from the capillary, which is usually very small. If the operating pressure in the irrigation line is changed, it is then necessary to either shorten the capillary tube or replace it with a longer one in order to achieve a certain discharge rate.

The disadvantage of this type of dropper is the limited possibility of regulating the discharge rate. In the event of clogging with impurities in irrigation water, the only way to restore the function is to replace it.

The aforementioned drawbacks are eliminated by the cuff dropper according to the invention, the essence of which is to form an open capillary groove into one wall of the plastic cuff. The capillary groove is spiral-shaped or serpentine-shaped. After adhering to the wall of the irrigation pipe, the cuff closes the capillary groove all the way down to the outlet of the capillary thus formed at one edge of the cuff. Water from the irrigation pipe flows out of the hole on its wall, enters the capillary and flows out of it at one edge. By rotating the cuff around the perimeter of the irrigation pipe, the outlet opening of the conduit may be adjusted so that the outflow of water in the formed capillary is either longer or shorter depending on the desired discharge rate of water from the dropper. Fixed clamping of the cuff dropper around the irrigation pipe is achieved by \ t

Claims

SUBJECT A cuff dropper for distributing irrigation water to a plant from an irrigation pipe, consisting of a cuff wrapped and fixed around the irrigation pipe, characterized in that in the cuff body (1) 2 two cuff ends are screwed. In the event of capillary clogging by suspended solids or salts contained in irrigation water, the cuff dropper is removed from the conduit and the open capillary groove is simply cleaned with a brush. In order to reduce the risk of a dropper failure due to clogging, it is possible to form a double, parallel flowing capillary groove into the cuff wall. BRIEF DESCRIPTION OF THE DRAWINGS In the accompanying drawing, two examples of embodiments of a cuff dropper according to the invention are shown, wherein FIG. 1 shows a cuff dropper with a spiral-shaped capillary groove in a longitudinal section and FIG.

2 in a plan view, FIG.

3 shows a cuff dropper with a serpentine capillary groove in a longitudinal section, and FIG.

4 in a plan view, FIG.

5 is a view of the cuff dropper mounted on the irrigation pipe in the working position, and FIG.

6 is shown in cross section perpendicular to the pipe longitudinal axis. The cuff dropper is formed by a plastic cuff 1 into which a single or double open capillary groove 2 in the form of a spiral or other shape is provided on one side, providing a sufficient capillary length with a minimal flat cuff. The cuff 1 is provided with reinforced projections 5 at both ends, which serve to fasten the screw 6 connecting and engaging the cuff 1 around the irrigation pipe 4 at the point of the outlet opening 3. The cuff droppers are installed so that the outflow openings 3 on the irrigation pipe 4 are first drawn. , preferably at the top of the pipe at a distance from each other according to the clip of irrigated plants. The irrigation pipe 4 is then wrapped in place of the outflow openings and the cuff droppers are fastened with a screw 6. After filling the irrigation line 4 with water at the operating pressure, it is possible to start the gradual calibration of the individual cuff droppers by gradually rotating the cuff 1 around the irrigation line 4 in one or the other direction until the desired discharge rate is reached. DISCLOSURE OF THE INVENTION is a single or double open capillary groove (2J, connected to the outlet opening (3) of the irrigation pipe (4). 1 drawing 216 869

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