RU2296461C1 - Irrigation pipeline - Google Patents

Abstract

FIELD: agricultural engineering, in particular, furrow irrigation of root crops.

SUBSTANCE: irrigation pipeline has underground distribution pipeline with branch pipes-water outlets equipped with elastic perforated pipes joined at their entire length with flexible linear spiral member. Connection of perforated pipes with branch pipes-water outlets is made in the form of movable heads provided with spring-loaded two-position valve and projections insertable into spiral slots formed on internal surface of branch pipes-water outlets. Irrigation pipeline of such construction enables free passage of irrigation equipment along furrows during inter-irrigation period.

EFFECT: increased efficiency by providing complete mechanization of works in supplying of water onto group of furrows and controlling of flow rate along pipeline.

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Description

The present invention relates to the field of agriculture and may find application in the irrigation of row crops by furrows.

A known design of an underground irrigation pipeline, including an underground pipeline with water outlets equipped with several horizontal pipes to discharge water into a group of furrows (ed. St. USSR No. 1777693, A01G 25/06. BI. No. 44, 1992).

However, this pipeline makes it difficult to conduct row cultivation of furrows in connection with the stationary installation of horizontal tubes. For cutting or loosening of furrows, the row crop unit must drive into the field, but horizontal tubes create an obstacle to its movement. Removing and reinstalling the tubes is a long and laborious process.

Closest to the proposed device is an underground irrigation pipeline with outlets to a group of furrows in the form of nozzles equipped with perforated tubes for discharging water into the furrows (Pat. RF No. 2091008, MKI A01G 25/06, BI. No. 27, 1997). Due to the presence of water outlet perforations made through a distance equal to the row spacing, this design of the underground irrigation pipeline allows mechanizing the process of water distribution between the furrows. The pipeline design provides for the possibility of placing irrigation pipes in the inter-irrigation period along the rows of plants in their protective zone.

A disadvantage of the known device is the significant amount of manual work associated with the need to install irrigation pipes in a working position before irrigation and after it is completed before inter-row treatments, as well as the regulation of the flow rate supplied from each outlet.

The proposed design of the irrigation pipeline, including an underground distribution pipeline with water outlets equipped with perforated tubes for distributing water along the furrows, in which the perforated tubes are made of elastic material and are mated with an elastic linear spiral element along the entire length, and the connection of the perforated tubes eliminate these drawbacks with water outlets made in the form of movable heads equipped with a spring-loaded on-off valve and protrusions included in the spiral grooves on the inner surface of the nozzle outlets.

The essence of the proposed technical solution is illustrated by drawings, where Fig. 1 shows a transverse section of an irrigation pipeline during the inter-irrigation period, and Fig. 2 is a longitudinal section of an irrigation pipeline during irrigation.

The proposed irrigation pipeline consists of an underground distribution pipe 1 with water outlets 2 and perforated tubes 3 made of elastic material, along the entire length of which are paired with an elastic linear spiral element 4. In the upper part of the water outlet there is a movable head 5 having a unit 6 for connection with a perforated tube 3. On the inner surface of the outlet pipe 2 there are several spiral grooves 7 with a rotation angle of 90 °, and on the adjacent surface of the head 5 is placed a corresponding number of the projections 8 within the grooves 7. Between the head-walls 5 and overflow nozzle 2 has gland seals 9.

Inside the node 6, a two-position spring-loaded valve is installed, including an inlet seat 10 and an adjacent disk 11 with a locking stop 12. The disk 11 is connected via a rod 13 to a disk 14 located at the outlet seat 15. The valve has a spring 16 located between the stop 17 and the disk 11.

The work of the proposed irrigation pipeline is as follows:

The water outlets 2 of the underground distribution pipe 1 are located in the ridges 18 of the grooves 19. In the initial position, their movable heads 5 are in the lowest position, while the nodes 6 together with the spiral perforated tubes (due to interfacing with the elastic linear spiral element 4) 3 are located along rows of plants growing on ridges 18. This provides free passage of row cultivation equipment.

When starting up the water in the underground distribution pipe 1 and filling the water outlets 2 under the pressure of the water, the head 5, sliding by the protrusions 8 along the spiral grooves 7, rises to its highest position, turning 90 ° together with the node 6 and connected to it rolled into spiral perforated tube 3. Next, the water pressure overcomes the resistance of the spring 16 and, pushing the disk 11, opens the valve inlet. Water, filling the perforated tube 3 and overcoming the resistance of the elastic linear element 4, untwists it and spreads along the ridges 18 across the grooves 19. In this case, the perforation holes 20 are located above the furrows 19, into which irrigation water enters. When the distribution pipe 1 is operating, a spring-loaded on-off valve provides the same water flow from all branch pipes 2, compensating for the pressure change along the length of the pipe 1. If the pressure at some section of the distribution pipe 1 exceeds a predetermined value, the spring 16 is compressed, disk 14 the valve approaches the seat 15 of the outlet, reducing the size of the latter and thereby equalizing the flow. When it becomes necessary to shut off part of the outlets, the valves are fixed in the closed position using the locking stopper 12.

After issuing a given irrigation rate, the water supply to the pipeline 1 is stopped. The perforated elastic tubes 3 are freed from water residues and, under the action of the elastic forces of the spiral element 4, are rolled into a spiral with it. Under the influence of gravity, the heads 5 return to their lowest position and, thanks to the sliding of the protrusions 8 along the grooves 7, rotate 90 ° together with the perforated tubes 3, rolled into a spiral, which are located in the alignment of the ridges 18, allowing passage of row cultivation equipment when loosening row spacings and slicing new furrows.

During the next watering, the entire cycle of operations is repeated.

Thus, the proposed design of the irrigation pipeline provides free passage of row cultivation equipment along the furrows during the inter-irrigation period and the full mechanization of work to supply water to the group of furrows and control the flow along the length of the pipeline.

Claims (1)

Irrigation pipeline, including an underground distribution pipeline with branch pipes - water outlets equipped with perforated pipes for distributing water along the furrows, characterized in that the perforated pipes are made of elastic material and are paired with an elastic linear spiral element along the entire length, and the connection of the perforated pipes with pipes is water outlets made in the form of movable heads equipped with a spring-loaded on-off valve and protrusions included in the spiral grooves on the inner surface pipes - outlets.

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