Water pressure-based water inlet control for pipe or hose-based inlet systems of artificial irrigation systems

Abstract

Water pressure-based water supply control for pipe- or hose-based supply systems of artificial irrigation systems. This ensures that water is only delivered to the individual outlets when the entire hose or pipe system is filled and under water pressure for transport to the outlets.

Description

[0001] Common irrigation systems, which have an inlet system and various outlets, release water underground or above ground through holes in the pipes or hoses. It is also possible to deliver water to connected sprinklers, ditches, or other end users. These systems have a problem with uneven water distribution, and thus also of any added fertilizer. This is due to their design and can also be observed when simply watering a garden with multiple sprinklers: The sprinkler that is first reached by water starts operating first, followed by those connected in series, and the sprinkler that was last reached by water last. The same thing happens, albeit in reverse, when the water is turned off.

[0002] An inflow system in which the outlets, whether holes, ditches or sprinklers, are connected one after the other, therefore has the technical problem of uneven water distribution.

[0003] The intake points closer to the water inlet receive more water, while those further away receive less water in a given water inlet interval. This effect is not significant for a short distance, such as a home garden, but becomes more significant for hundreds of meters of agricultural / industrial field irrigation or a kilometer-long artificially irrigated green noise barrier: If adequate irrigation—or even sufficient fertilization by adding fertilizer to the water—is to be ensured even for the last plants, more water / fertilization must be used overall.

[0004] This not only represents an economic cost, but is also ecologically unsound in areas with water scarcity. Furthermore, there is a risk of over-fertilization of the soils near the water discharge point causing salinity, which in turn leads to groundwater pollution and also disrupts plants and plant growth.

[0005] This problem is solved by the invention presented here: The function of the invention is additionally illustrated by 3 drawings. Fig. Figure 1 shows an exemplary design of inlet pipe and aeration and venting device with pressure-based outlet as an isometric view. Fig. 2 and Fig. 3 show the function in a side sectional view.

[0006] In the figures are - the pipe / hose with 1, - the entire ventilation device with seal with 2, - the sealing device of the ventilation device which closes with water with 3, - the incoming and outgoing air with 4, - the pressure-based outlets are designated 5 and the water with 6.

[0007] Because, as defined in claim 1, water is only released into the outlets once the entire system is filled and the water pressure has built up, a uniform water release at each outlet is guaranteed. This is achieved by the outlets having pressure-based outlets (5) that allow water to flow from the inlet pipe / hose (1) into the outlets only when a corresponding water pressure is reached, as described in claim 4.

[0008] To ensure this, the invention has one or more ventilation devices (2) that allow air exchange until they are mechanically closed and sealed by the incoming water.

[0009] This design is defined in claim 3.

[0010] Claim 5, which is based on claim 4, ensures, by means of the time delay when closing the pressure-based outlets at the outlet points (5), that the inlet pipe / inlet hose (1) can empty itself of the residual water when the water pressure is lost due to the closing of the water supply.

[0011] This is also supported by the fact that the ventilation devices (2) open sufficiently due to the lack of water pressure so that the air can flow in.

[0012] Overall, this allows for a precisely measurable and consistent water discharge, based on the known flow rate at the individual discharge points and the length of the water inlet interval. The same applies to the amount of fertilizer added, provided it is dissolved in the inlet water.

[0013] A further advantage of the invention is that this control system does not require electronics, i.e., electrically controlled valves or measuring devices. In large irrigation systems, these are not only a cost factor due to the required power and additional components, but also a potential cause of malfunctions. This advantage is defined in claim 2.

Claims

[1] Water pressure-based water supply control for pipe- or hose-based supply systems of artificial irrigation systems. Such that water is only delivered to the individual outlets when the entire hose or pipe system is filled and under water pressure for transport to the outlets. [2] Water pressure-based water supply control for pipe or hose-based supply systems of artificial irrigation systems, according to claim 1, such that the control of the water discharge in the pipe or hose supply lines is carried out mechanically. [3] Water pressure-based water supply control for pipe- or hose-based supply systems of artificial irrigation systems according to claim 1, such that the pipes or hoses of the supply systems have one or more devices for aerating and venting air, which are mechanically closed by the inflowing water. [4] Water pressure-based water supply control for pipe- or hose-based supply systems of artificial irrigation systems according to claim 1, such that the outlets in the supply pipes or hoses to the outlet points have a pressure-based closure, so that water is only released when the water pressure is appropriate. [5] Water pressure-based water supply control for pipe or hose-based supply systems of artificial irrigation systems according to claim 4, such that the pressure-based closures to the outlet points have a moment of inertia which keeps these closures open for a short period of time even when there is no water pressure.

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