SU1554830A1 - Water outlet of underground watering pipeline - Google Patents

Abstract

The invention relates to agriculture, in particular to irrigation technology, and can be used in surface irrigation systems from underground stationary pipelines. The purpose of the invention is to increase the reliability of work. The outflow of the underground irrigation pipeline includes a vertical pipe 1 with an inlet 2 and an outlet 3. At the outlet end 4 of the nozzle 1, a saddle 5 is installed above which an additional saddle 6 is located. A ball check valve 7 with an elastic sheath 8 is installed in the saddles 5 and 6 and is closed by a cylindrical body 9, the bottom 10 of which is facing upwards. Under the action of water, the ball valve opens from the saddles 5 and 6 and opens the water outlet holes 11 located between the saddles. 1 hp f-ly, 2 ill.

Description

The invention relates to agriculture, in particular to irrigation technology, and can be used in surface irrigation systems from underground stationary pipelines.

The purpose of the invention is to increase reliability in operation.

FIG. 1 and 2 show the outflow of an underground irrigation pipeline.

The outlet of the underground irrigation pipeline has a vertical pipe 1 with an inlet 2 and an outlet 3 holes. At the outlet end of the nozzle 1, a saddle 5 and an additional saddle 6 are placed one above the other, a brother valve 7, made in the form of a ball, and from the outside the valve 7 is covered with an elastic sheath 3. The valve / is placed in the cavity of the cylindrical body 9 facing the bottom 10 up and attached to the outlet end k of the pipe 1. In the pipe between the seats 5 and 6 there are water outlets 11 directed upwards and forming an acute angle with the vertical axis of symmetry of the pipe I. The housing 9 can be removable, i.e. can be connected to cartridge 1 with a thread.

The underground water discharge of the irrigation pipeline works as follows:

At the initial moment of birth in the pipeline and in the pipe 1 no. A ball check valve 7 with an elastic sheath 8 is installed in the saddle b and 6 and is closed by a cylindrical body 9, the bottom 10 of which is facing upwards. When water is supplied to the irrigation pipeline, water through the inlet 2 enters the cavity of the pipe 1, and the pressure under the ball check valve 7 in the area of the hole 3 increases and the ball rises, opening the side outlets 11 between the seats 5 and 6 (Fig. 2). But since the specific gravity of the ball valve 7 with the elastic sheath 8 is 1.05-1.15 g / cm3 with respect to the specific gravity of water, the process of ascent occurs slowly. The fluid level in the housing 9 rises, and an air cushion is formed under the bottom 10 of the housing 9, which occurs due to the compression of atmospheric air entering the cavity of the housing 9. The air cushion prevents the ball valve 7 from colliding with the bottom 10 of the housing

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9, since it remains continuously immersed in the liquid. In this position, the outflow is open and the water is directed upwards at an acute angle to the vertical axis of symmetry of the nozzle 1 and penetrating the soil through the lateral water outlets 11, reaching the day surface in the furrow or into the strip. In this case, watering goes without vibration of the housing 9.

After the water in the irrigation pipeline is turned off and the water is discharged from it, the pressure in the cavity of the pipe 1 drops, the ball valve 7 is lowered into the seats 6 and 5. Having a spherical shape and at the same time covers the holes 3 and 11, preventing liquefied soil from entering the cavity of the pipe 1. The overlap of the openings 3 and 11 of the ball valve 7 will be hermetic by sucking and pressing the elastic sheath 8 to the surface of the saddles 5 and 6.

In addition, during the inter-irrigation period, some water remains in the cavity of the housing 9, which contributes to the wetting of the elastic shell 8 of the valve, which contributes to an increase in the service life of the surface of the valve 7 (aging will not occur).

The closure body is made Ј by an elastic outer surface in combination with a spherical saddle that causes the flow rate to be smoothly controlled, eliminating the case vibration, and the need to simultaneously block all water outlets in the saddle by cutting off the residual flow inside the case. This eliminates the possibility of spontaneous opening of the valve and self-sealing of the elastic material of the closure element with a high degree of sealing is achieved, since during the entire time of irrigation the ball will be affected by the force caused by the wetting of the elastic outer surface, which prevents unproductive water leaks into the pipeline. Drainage of the side holes at an angle to the axis of symmetry of the nozzle allows water to be directed upwards. In addition, the size of the outlet is reduced, and reliability and stability are improved.

Claims (2)

1. Outlet of an underground irrigation pipeline, including a housing with A water outlet connected to a vertical nozzle with a check valve seat, characterized in that, in order to increase operational reliability, the nozzle is provided with a second check valve seat positioned above the first, while the water outlet holes 8306 wives in the pipe between the saddles and pointing up. 2. The outlet according to claim 1, characterized in that the check valve - on the outside is covered with an elastic sheath and has a specific weight of 1.05-1.15 g / cm3, and the saddles have a spherical shape.