RU2325799C1 - Irrigation pipeline with drip emitters - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: invention deals with a method of drip irrigation of agricultural crops with the help of flexible irrigation pipelines. The irrigation pipeline with drip emitters contains a closure installed inside the pipeline cavity and opening inside the pipeline. There is a ring insert on the inside of the pipe. The closure is executed in the shape of a tongue with a head at the end and is attached to the ring insert. The lower part of the head has a hemispheric shape. The ring insert and the head are joined via a flexible holder in the form of a circular arc with its bulging side oriented towards the pipeline axis. The ring insert is fixedly positioned relative to the water discharge opening with due respect for the flexible holder length. The water discharge opening and the hemispheric head are arranged uniaxially.

EFFECT: improving productivity of agricultural crops and accurate water expenditure regulation.

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Description

The invention relates to techniques for irrigation of crops using the drip method using flexible irrigation pipelines.

A water outlet of an irrigation pipeline is known, including a housing with a drain hole and a fastener connecting the housing to the pipeline, the housing being formed by two sidewalls connected by a vault consisting of a front horizontal part and a rear curved horizontal part smoothly conjugated with it directed outwardly, while the outlet of the housing is located opposite the rear curvilinear part of the arch, and the fastener is made in the form of a plate placed on the inside of the and connected to its body by means of screws made in a sweat, while the plate is equipped with a protrusion with an oblique cut located behind the inlet (SU 1501981 A1, 08.23.1989).

Disadvantages of the water outlet are limited functionality, difficulty of installation, poor quality of irrigation.

A water outlet with a flexible conduit is known, including an elastic casing installed in the wall and attached to the edges of the water outlet, one of which is bent into the pipeline from the outside, and the elastic casing is made like a tube (SU 378592 A1, 04/18/1973).

The disadvantages of the outlet are limited functionality and low reliability.

A water outlet is known which is made in the form of a piston installed in a pipe opening, provided with a porous element that overlaps the pipeline opening and is pressed against the piston by means of a plate rigidly connected to it (SU 471094 A1, 05.25.1975).

The disadvantages of this outlet are limited functionality, low operational reliability and the lack of the ability to control the water supply.

Known valve for sprinkling, etc. devices with a body and an elastic locking member that overlaps the openings in the saddle, with a central protrusion formed on the saddle to which an elastic elastic locking member is attached in the form of a flat plate forming gaps with the walls of the housing.

The presented design is inoperative, since to close the hole in the seat requires uniform pressure of the locking element to the valve seat, which cannot be provided by the presented design of the locking element; this would be possible if the locking member was moved with a central protrusion (SU 360498 A1, 11.28.1972).

Known exhaust valve with a flexible supply pipe, comprising a locking element attached to the inner wall of the pipeline and opening inside the pipeline, while the locking element is made of elastic-elastic and attached to the wall of the pipeline by perforated along the edges of the diaphragm (SU 394493 A1, 01/16/1974).

The disadvantages of the valve include the complexity of the design, low reliability and the lack of the possibility of a controlled water supply, in addition, the valve can work if it is laid vertically on the soil, which complicates the mechanization of laying and laying out.

This design is accepted as the closest analogue.

The invention consists in the following.

The problem to which this invention is directed is to increase operational reliability and provide an adjustable water supply.

The technical result achieved by the implementation of this invention is to increase crop yields and ensure a given water flow.

The specified technical result is achieved in that the irrigation pipeline with drip outlets, including a locking element installed in the cavity of the pipeline and opening inside the pipeline, according to the invention has an annular insert in the inner cavity, and the locking element is made in the form of a tongue, is attached to the annular insert and has the end of the head, the lower part of which has a hemispherical shape, the annular insert and the head are connected by an elastic holder made in a circular arc convex towards the axis the pipeline, the annular insert is fixed relative to the water outlet corresponding to the length of the elastic holder, and the water outlet and the hemispherical head are made coaxially.

The invention is illustrated by drawings, where figure 1 shows a cross section of an irrigation pipeline with a drip outlet in the absence of water pressure in the pipeline; figure 2 - the same with increased water pressure in the pipeline.

Irrigation pipe 1 has an annular insert 2 in the inner cavity, fixed during the manufacture of pipeline 1. The annular insert 2 is equipped with a locking element 3 made in the form of a tongue from an elastic material and fixed to the annular insert. The locking element 3 has a head 4 at the end, the lower part of which is made hemispherical in shape. The annular insert 2 and the head 4 are connected by an elastic holder 5, made in a circular arc convex towards the axis of the pipeline. The annular insert is fixed relative to the water outlet 6 according to the length of the elastic holder, while the hemispherical mating surface of the head 4 should be located above the water outlet 6 in the pipe wall.

In the free state (figure 1), the locking element 3 is raised and the internal cavity of the pipeline is connected to the atmosphere.

Irrigation pipeline with drip outlets works as follows.

Before laying on the irrigated area, the pipeline rolls onto a coil, which is installed on the sowing or planting unit, while the distances between the holes 6 should be equal to the sowing (planting) step of crops. The sowing unit with coils of irrigation pipelines leaves the field and simultaneously sows and layouts irrigation pipelines 1, which provides a comprehensive mechanization of the layout of pipelines. After the layout, irrigation pipelines 1 are connected to the main pipeline and the drip irrigation system is ready for irrigation.

When water is supplied through the pipeline in the direction of the arrow, the opening value of the shut-off element 3 depends on the pressure in the pipeline. When the pressure increases, the locking element 3 closes, when the pressure decreases, the locking element 3 opens. At the beginning of the pipeline, the pressure will be increased, the shut-off element 3 is pressed against the water outlet 6, its live section ω decreases, and the flow rate, which is determined by the equation, also decreases

,

,

where μ is the flow coefficient;

ω is the living cross section of the flow;

g is the acceleration of gravity;

N - pressure in the pipeline.

An analysis of the equation shows that a change in the live section o with a change in pressure H allows you to get the same flow rate along the entire length of pipeline 1. After the end of the irrigation season, pipeline 1 is rolled onto coils in a mechanized way, which provides complex mechanization of laying and laying out the pipeline during operation. Automatic maintenance of a given flow rate of irrigation water ensures optimal nutrition of plants and increased yield.

Claims (1)

Irrigation pipe with drip outlets, including a locking element installed in the cavity of the pipeline and opening inside the pipeline, characterized in that it has an annular insert in the internal cavity, and the locking element is made in the form of a tongue, attached to the annular insert and has a head at the end, the lower part which has a hemispherical shape, the annular insert and the head are connected by an elastic holder made in a circular arc convex towards the axis of the pipeline, the annular insert is fixed relative to water outlet corresponding to the length of the elastic holder, and the water outlet and the hemispherical head are made coaxially.

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