Gravity drip-irrigation full-automatic control device

Abstract

The invention provides a gravity drip irrigation full automatic control device, which comprises a water storage tank arranged on a support above ground, a water supply pipe accessing the tank body, and an irrigation pipe connected with a water outlet of the tank body, and is characterized in that the full automatic control device takes two 'high' and 'low' water levels set by the water storage tank as control references; the inside of the water storage tank is provided with a liquid level sensor which is connected with a water supply electromagnetic valve and an irrigation electromagnetic valve through a controller to control water supply and irrigation operations; and the controller is provided with a counting module, and realizes once irrigation and multiple cycle by setting cycle index of the high / low water level. The gravity drip irrigation full automatic control device can reduce volume of the water storage tank and occupied area, increase safety through frequent circular irrigation under the conditions of certain control area and certain irrigation quantity, and expand irrigation area through pipe transformation under the condition of certain volume of the water storage tank to fully utilize the prior equipment and realize automatic irrigation.

Description

technical field [0001] The invention relates to a gravity drip irrigation automatic control device for agricultural drip irrigation, especially suitable for irrigation of large-scale crops, and belongs to the technical field of agricultural water-saving irrigation. Background technique [0002] As a state-of-the-art irrigation technology, drip irrigation supplies water and liquid fertilizer to the soil in the distribution range of crop roots with small flow, long time and high frequency, which has the advantages of increasing production, saving water and saving fertilizer. At the same time, since the temperature of the soil is not lowered and the aeration of the soil is not affected, the crops can grow well and mature in advance. With the development of water-saving irrigation in China, drip irrigation has also developed from traditional drip irrigation to low-pressure drip irrigation, and gravity drip irrigation has been vigorously developed because of its low cost, simple ...

AI Technical Summary

Problems solved by technology

[0003] However, there are still some problems in the application process of the existing drip irrigation system. First, as the water level in the water storage tank decreases during the irrigation process, the water delivery pressure also decreases, and the flow rate will change, so it is impossible to pass the irrigation water. time to control irrigation

Therefore, in practical applications, to ensure a certain amount of irrigation, it is necessary to calculate and determine the volume of the water storage tank according to the irrigation area. In the case of a relatively large irrigation area, the volume of the water storage tank is required to be relatively large. It occupies a relatively large area, and the cost also increases accordingly. Moreover, gravity drip irrigation requires the water tank to have a certain height to generate pressure. When the volume of the water tank is relatively large, there is a certain degree of danger.

In addition, when the volume of the water storage tank is relatively large, for small flow water sources such as streams and large wells, the water supply is often slow or interrupted, which affects the progress of irrigation.

Moreover, when irrigating, someone needs to be on duty to open and close the relative valves, which wastes a lot of manpower.

Generally speaking, the existing drip irrigation system is mostly used in greenhouses or greenhouses, the irrigation area is relatively small, and it is rarely used in large fields, and it has high requirements for water sources and a small range of applications.

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