SU1565423A1 - Water regulating device for closed irrigation unit - Google Patents

Abstract

The invention relates to agriculture, namely to devices for water distribution on subsurface irrigation systems. The purpose of the invention is to provide self-regulation of the water supply to the soil as it is saturated with moisture. The device contains a well 1 with a reception 4, a discharge 5 and a transit 6 chambers, a siphon water outlet 16, a supply 7 and a discharge 8 pipes of the transporting (transit) pipeline, irrigation pipes 9, a hood 11 with partitions 12 and air inlets 13, 14 , 15. The device is equipped with a step switch connected to the air inlets 13, 14, 15 and kinematically - with a float drive 26. The step switch is designed as a housing 19 and a rotary disk 20 with air inlets symmetrically arranged ti, the number of which is equal to the number of siphon outlets 16, and on the rotary disk 20 one hole is smaller than in the disk of the housing 19, and the float of the actuator 26 is placed in a bonnet above the receiving chamber 4 of the well 1 and connected to a spring-loaded toothed rack 27 interacting with a ratchet wheel 28 connected to the rotary disk 20. 2 Cp f-ly, 5 ill.

Description

The invention relates to agriculture, namely to devices for water distribution on subsurface systems.

The purpose of the invention is to provide self-regulation of the supply of water; into the soil as it is saturated with moisture.

FIG. 1 shows a diagram of the device, a longitudinal section; in fig. 2 - view A on i. one; in fig. 3 shows a section in FIG. one; on ig. 4 shows a section B-B in FIG. one; in fig. 5 - switch with air inlet openings.

A water control device for a closed network of subsurface irrigation will contain a well 1, in which a vertical 4, a diversion 5 and a transit 6 chamber, an inlet 7 and an outlet 8 of the transporting (transit) pipe (not shown}, pipes 9 and 10 irrigation pipelines, common hood 11 with vertical partitions 12 and air inlets 13-15, irrigation pipes 16 and 17 and transit 18 siphon water outlets, made in the form of drain pipes, the bases of which are enclosed in diversion and transit chambers, and the upper ends with partitions of a cfp spore form crests of combs.

The device is equipped with a step switch kinematically connected with a float drive.

The step switch is made in the form of a disk housing 19 and a disk 20 with air inlets symmetrically located holes 21 and 22, and on the disk 20 one hole less than in the disk housing 19, the holes 21 are connected by air inlet pipes 13-15 with sealed compartments 23 -25 hood 11. The float drive is made in the form of a float 26 with a rack 27, a ratchet wheel 28, which is connected by a shaft 29 with a disk 20. The ratchet wheel 28 is provided with a locking pawl 30, the float 26 of the drive is placed in a hood above the receiving chamber of the well. The receiving chamber 4 through the opening 31 in the horizontal partition 3 is connected to the upper cavity 32 wells 1,

The device works as follows.

When water is supplied through the inlet nozzle 7, the receiving chamber 4 and the upper cavity 32 of the well 1 are filled. At the initial moment, the water begins to flow evenly across the ridge (in this particular case) of all three siphons, simultaneously removing air from all compartments 23-25 of the hood 11 .

The siphon, the air inlet of which is blocked from the access of atmospheric air, almost instantly switches on to full capacity. Level

the water in the upper cavity 32 of the well 1 decreases sharply and the water overflow into the siphons, the inlet pipes of which are open, is stopped. To supply the flow of water to a regular siphon, it is sufficient to open the air inlet into the compartment of the working siphon and shut off the air inlet of the desired siphon. This is accomplished with the step switch automatically as follows.

5 Water that flows through a siphon into one of the outgoing chambers 5, then, for example, through a branch pipe 9 into the irrigation pipeline, is distributed through humidifiers (not shown) and enters the root zone

0 soil.

After the soil is saturated, its absorbency decreases, due to which there is a decrease in the flow rate in the irrigation pipeline, which leads to a rise in the water level in the upper

5 of the cavity 32 of the well 1, while the float 26 rises and with the aid of the rack 27 turns the ratchet wheel 28 paired with the disk 20 with the common shaft 29. The disk 20 rotates through a predetermined angle a and

0, overlapping of the next hole 21 in the disk housing 19 of the step switch occurs. The other two holes 21 are open. The previously operated siphon 16 stops working, and the next 17 turns on, while

5 water flow through the pipe 10 enters the next irrigation pipeline.

The water level in the upper cavity 32 of the well 1 drops and the float 26 returns to its lower initial position. After refining the next siphon 17, a transit siphon 18 is turned on, supplying water through the outlet nozzle 8 to the next water distribution device, which operates similarly to the first one.

Claims (3)

1. Water control device for a closed irrigation network, including a well with receiving and diverting chambers, supply pipe and diverting 0 distribution pipe nozzles, air inlets with a control valve and a level sensor, characterized in that, in order to ensure self-regulation of water supply into the pool as it is saturated with moisture, the control valve is designed as a stepper switch, and the level sensor is designed as a float located in the head above the receiving chamber and kinematically connected with the step switch, 2. The device according to claim 1, characterized in that the step switch is made in the form of a rotary disk placed in a housing having air inlets symmetrically located openings with air inlets, moreover the disk is one hole smaller than in the case. 3. Device pop. 1, characterized in that the kinematic connection is made in the form of a toothed rack and ratchet wheel associated with a rotary disk. 17 15 18 ZS 23 sixteen