A Continuous Differential Flow Adjustable Irrigation Water Metering Device

Abstract

The invention discloses a continuous differential weight type flow-adjustable irrigation water volume metering device, which is characterized by comprising a water flow tank (3), a water volume metering device for calculating the dynamic water flow volume, and a water volume control device for controlling the irrigation water volume , the inside of the water tank (3) is hollow, the water tank (3) is installed on the slope protection (1), the water outlet (19) is provided on the right side wall of the water tank (3), and the water inlet is provided on the left side wall of the water tank (3). (20), the water volume metering device and the water volume control device are installed on the water tank (3). The dynamic balance sliding hanging box is used to control the cross section of the water, and the total water flow is counted through the continuous measurement of the displacement of the lever. It is beneficial to realize the utilization efficiency of water resources and intelligent control of irrigation water quantity.

Description

technical field [0001] The invention relates to a continuous differential-weight flow-adjustable irrigation water metering device, which belongs to the technical field of farmland water conservancy. Background technique [0002] Water resources are a major issue that people are increasingly concerned about. Agricultural water is a major consumer of water resources. Water is the lifeblood of agriculture. Agricultural water accounts for nearly 70% of the country's total water consumption, of which 90% is used for farmland irrigation. Irrigation areas are improving land productivity. It plays an important role in improving people's living standards and developing regional economy. With the increasing demand for farmland irrigation and the continuous expansion of irrigated areas, it is imperative to formulate strict and comprehensive irrigation area management measures. In recent years, the construction of agricultural water-saving projects has achieved certain results. Howeve...

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Problems solved by technology

[0004] The measurement of irrigation water volume is a basic and key technology. Traditional Parshall water measuring tanks, U-shaped water measuring tanks and other water measuring devices are only suitable for measuring large water volumes such as main canals and ditches, and are used to realize open channel water delivery in surface water irrigation areas. measurement, but the measurement accuracy of such devices is generally not high

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

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