SU829051A1 - System of subsoil irrigation - Google Patents

Description

(54) SUBMITTED IRRIGATION SYSTEM

This invention relates to agriculture, namely to subsurface irrigation. A subsoil irrigation system is known that includes a pumping station, field distributors, a hydropneumatic water supply regulator, an irrigation network, a back- and back connection pipelines that are hydraulically connected to the water supply regulator and telescopic tubular humidifiers with injectors embedded in the ground 1. The disadvantages of the system are the impossibility of eliminating the overwetting of the soil, the impossibility of introducing fertilizer to the scientific research institutes and the uneven irrigation. A subsoil irrigation system is also known that contains a shut-off element on a pressure pipe controlled both by a soil moisture sensor by means of an electromagnetic valve and a pressure regulator, in which the pressure regulator is implemented to eliminate soil moistening and increase the uniformity of soil moistening. in the form of a float chamber and hydraulically connected with a shut-off element 2. h. The disadvantage of the system is the impossibility of applying fertilizers if the condition of uniform supply of the required concentration is met. creates fertilizer over the entire length emoy wetting zone object of the invention - improved quality by sub-irrigation provide uniform and controlled supply of water soluble fertilizers and wetting over the entire area. . To achieve this goal, the system is equipped with a discharge pipe with an adjustable valve, which hydraulically connects the pressure and suction pipes, and an intake pipe of soluble mineral fertilizers, the end of which is inserted into the inside of the suction pipe to the point of connection to it. The drawing shows a diagram of a subsoil irrigation system. The subsurface irrigation system includes a water tank 1, a suction pipe 2, provided in the lower part with a check valve 3 and a screen filter 4. The suction pipe 2 through a pump unit 5 and an electrically operated valve 6 connected to a pressure feed line. 7,

from which circular tubular humidifiers 8, which are equipped with valves 9 in the places of creation with inlet pipe, depart. The supply pipe 7 is connected to the suction pipe 2, the discharge pipe is Hzim pipe 10 equipped with adjustable bypass valve 11 Network for supplying mineral-dissolved mineral water The fertilizer contains a tank 12 in which the intake pipe 13 is placed with a check valve 14 and a control valve 15. The bottom part of the intake pipe is equipped with a shut-off valve 16 connected by a lever lever A 17-float pump 18 and a shut-off relay relay 19 19. The upper filling level of the tank 12 is controlled by a poppa 20, the system is equipped with an automatic irrigation control device that includes a sensor 21 for soil moisture installed in the wetted area and connected to the irrigation system on control unit 22 ,

The system works as follows.

When the system is turned on, water from tank 1 flows into suction pipe 2 through check valve 3 and strainer 4. Then pump 5 through open valve gates water into supply pressure supply line 7. After filling pressure supply line 7 in it and reaches pressure, the valves 9 are opened simultaneously and water is immediately supplied to all the pipe humidifiers 8, regardless of their distance. In this case, a uniform distribution of water across the entire width of the irrigated area is achieved. Each humidifier is a tubular conduit closed by ends to the supply pipe 7, whereby a rapid flow of fluid through the humidifier is ensured, filling it. After filling the sprinklers, water or nutrient solution, wet through the screw joints and penetrate through the porous permeable layer into the soil, which ensures even distribution of the liquid along the ipine of the irrigated area, as the permeable along the spiral passes through the entire length of the water conduit. Since the sprinklers are inserted into the soil to a depth of the root layer, the outflow of water or nutrient solution occurs directly into the root system, which ensures efficient use of water without eroding the soil structure.

The presence in the system of the discharge pipe 10 with the bypass adjustable valve 11 ensures the creation of a certain pressure of water in the x-humidifiers and maintains it at the same level in the process of changing water consumption by the soil as it becomes saturated with moisture. Excess fluid is discharged by the discharge pipe 10, the adjustable valve 11 opens and the liquid from the pressure pipe 7, relieves excess pressure, flows into the suction pipe 2. The flow of excess liquid into the suction pipe 2 improves the condition of mixing the water boils and reduces the degree of suction in the suction pipe. Pipeline, thereby creating conditions for regulating fertilizer consumption as water consumption changes. The concentrated solution of mineral fertilizers from the tank 12 due to the vacuum created by the pump 5 in the suction pipe 2 enters the intake pipe 13 and through the check valve 14 and the control valve 15 enters the reverse flow of water and moves to the pump 5 through the suction pipe 2 partially mixing smiling In pump 5, final mixing occurs. The control valve 15 provides the ability to regulate the intake of fertilizers at a given flow rate at maximum water consumption. As we soil the soil with moisture and reduce water consumption, excess water from the outlet of its pipeline 10 is increasingly supplied to the suction pipe 2, which leads to a decrease in the vacuum in the suction pipe and a decrease in the consumption of fertilizers only, as well as a decrease in water intake from the reservoir 1 ,, This ensures that the concentration of mineral fertilizers in the nutrient solution is constant during the entire irrigation period.

When the volume of liquid mineral fertilizers in the tank 12 decreases at the moment when the float 18 of the shut-off valve 16 is on the surface, the bottom part of the suction pipe 13 is tightly closed by the valve 16. At the same time, the lever gear 17 will close the contacts of the relay 19 and the electrical part of the valve b will receive a signal to close the flow section of the pressure pipe 7. After filling the container 12 to the upper level with liquid mineral fertilizers, the float 20 provides through the block 22 the opening of the valve b. At the same time, the float 18 through the lever gear 17 pulls off the check valve 16, thereby opening the bottom part of the filling pipeline 13. The duty cycle of the system is resumed.

When the required humidity is reached, the soil moisture sensor 21 generates a signal g, the control unit 22, which turns off the pump motor 5, and through the relay 19 ensures the closure of the valve b. When the soil moisture reaches the lower level of the specified irrigation program, the irrigation system using the humidity sensor 21, the relay 19 and the control unit 22 is put into operation. The check valves 3 and 14 prevent the return flow of water and liquid fertilizers into the tank 1 and the tank 12 from the suction pipe 2. and the intake pipe 13 in the event of a system shutdown.

Subsoil irrigation system allows maintaining optimal moisture in the root zone of plants and supplying liquid complex fertilizers dissolved in water, ensuring the condition of uniform soil moistening over the entire area of the irrigated area, controlling consumption of fertilizer doses with changes in water consumption. The ordered use of water and fertilizers leads to their considerable savings, in particular the savings of fertilizers are 40-50%.

Invention Formula

The subsurface irrigation system, which includes a suction pipe, a pump unit, a water supply regulator with electric damper, a pressure pipe, and tubular humidifiers, which, in order to improve the irrigation quality by ensuring an even controlled water supply and soluble fertilizers, adjustable valve, hydraulically bonding the pressure and suction pipes and intake pipe of soluble fertilizers, the end of which is inserted into the suction pipe water to the point of attachment thereto discharge conduit.

Sources of information taken by BQ attention in the examination

1, USSR Copyright Certificate 159351, cl. A 01 23/04, 1962,

2, USSR Author's Certificate No. 429784, class, A 01 G 25/06, 1972,

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Claims (1)

Claim The subsoil irrigation system, including a suction pipe, a pump unit, an electrically operated water regulator, a pressure pipe and tubular humidifiers, characterized in that, in order to improve the quality of irrigation by ensuring an even regulated supply of water and soluble fertilizers, the system is equipped with a discharge pipe with an adjustable valve hydraulically connecting the pressure and suction pipes, and the soluble fertilizer intake pipe, the end of which is introduced into the suction pipe water to the point of merger with the discharge pipe.