Rotary open-close type irrigation water metering device

Abstract

The invention discloses a rotary open-close type irrigation water metering device. The rotary open-close type irrigation water metering device comprises a water tank (5), a swing mechanism, a limitingmechanism for limiting the swing mechanism and a water metering mechanism, wherein the water tank (5) is mounted on a protection slope (1); a water inlet (3) is formed in the water tank (5) for communicating water positioned inside the protection slope (1); a water outlet (16) is formed in the water tank (5) for communicating a farmland (15); and the swing mechanism, the limiting mechanism and the water metering mechanism are mounted in the water tank (5). An intermittent water metering method is used, the overall water quantity is calculated by adding up the single water quantity and drainage frequency of the water tank, and the metering precision is higher than that of an ordinary continuous water metering device. Circulating water inlet and drainage are realized by using a floating pinhole interlocking mechanism and a swing valve mechanism, the trigger action is rapid, the control precision is high, and the single water quantity stability is high.

Description

technical field [0001] The invention relates to a rotary opening and closing type irrigation water metering device, which belongs to the technical field of irrigation water metering. Background technique [0002] Agricultural water consumption is a major consumer of water resources. In recent years, the construction of agricultural water-saving projects in various places has achieved certain results. However, the extensive and inefficient use of agricultural irrigation is still widely used at present, which exacerbates the shortage of water resources to a certain extent. Practice has proved that the construction of agricultural water metering facilities and the metering, charging and control of agricultural water use are effective measures for sustainable agricultural development and an important part of the construction of a water-saving society. With the increasing demand for farmland irrigation and the continuous expansion of irrigated areas, it is imperative to formulat...

AI Technical Summary

Problems solved by technology

[0004] Irrigation water metering devices are the basis for the rationalization and scientificization of agricultural water use. At present, traditional Parshall water measuring tanks, U-shaped water measuring tanks and other water metering devices are only suitable for the measurement of large water volumes such as main canals and ditches, and are not suitable for end-level farmland. Accurate metering of irrigation water

Although some precision flow devices, such as ultrasonic flowmeters and infrared flowmeters, have high measurement accuracy, they have high investment costs, complicated installation and high maintenance costs, which will increase the burden on farmers.

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