A Differential Turntable Type Automatic Metering Control Device for Irrigation Water

Abstract

The invention discloses an automatic metering control device for differential rotating disc type irrigation water volume, and belongs to the technical field of farmland water conservancy. The device comprises a water passing tank (4), a water switch mechanism and a water level detection mechanism, wherein the water switch mechanism is used for controlling water inlet and outlet of the water passing tank (4), and the water level detection mechanism is used for detecting whether or not the water level in the water passing tank (4) reaches a calibration value; the water passing tank (4) is arranged in a ditch protection slope (1), and the water switch mechanism and the water level detection mechanism are both arranged in the water passing tank (4). The automatic metering control device for the differential rotating disc type irrigation water volume has the advantages that a batch-type water volume metering method is adopted, the total water passing volume is calculated by accumulating thesingle water passing volume and drainage frequency of the water passing tank, and the calculation precision is higher than that of an ordinary continuous water volume metering device; a differentialtype water inlet and outlet rotating wheel is adopted to achieve intermittent drainage, water level control is carried out by adopting a mode of a float bowl triggering a photoelectric coupler, the trigger action is rapid, the control precision is high, and the stability of single water passing volume is high.

Description

technical field [0001] The invention relates to a differential rotary disc type irrigation water automatic metering control 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. 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 play an important role in improving land productivity, improving people's living standards and developing regions. important role in the economy. In today's society, agricultural water consumption is a major consumer of water resources. In recent years, the construction of agricultural water-saving projects 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...

AI Technical Summary

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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