An Intermittent Trigger Type Farmland Irrigation Water Quantity Metering Device

Abstract

The invention discloses an intermittent triggering type farmland irrigation water volume metering device. The device comprises a water tank (3), a water inflow control mechanism for controlling waterinflow of the water tank (3), a water discharge control mechanism for controlling water discharge of the water tank (3) and a metering system; the water tank (3) is mounted in a channel revetment close to one side of a farmland (14), a middle part of a left side of the water tank (3) is provided with a water inlet, and a right side of the water tank (3) is provided with a water outlet; the metering system, the water inflow control mechanism and the water discharge control mechanism are all mounted on the water tank (3). For the intermittent triggering type farmland irrigation water volume metering device provided by the invention, a discrete type water volume metering method is used, total flow-through water volume is calculated through accumulation of one-time flow-through water volume and water discharge times of the water tank, and metering precision is higher than the metering precision of a normal continuous metering device. By regulation of height of a top nut of a guide rod, one-time flow-through water volume can be regulated conveniently, and consequently, the intermittent triggering type farmland irrigation water volume metering device provided by the invention is suitablefor occasions of various water flows, and has high adaptability.

Description

technical field [0001] The invention relates to an intermittent trigger type farmland 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. 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. 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. Coupled with the serious waste of agricultural water, saving water resources and establishing a strict water resources management system have become the top priority. With the rapid ...

AI Technical Summary

Problems solved by technology

Practice has proved that the construction of water measuring facilities in irrigation areas has promoted the improvement of farmland water utilization rate, water fee recovery rate and economic efficiency of irrigation areas. Low; large-scale metering devices require more funds and occupy a larger field; high-precision instrumentation devices require high maintenance and calibration, and the scope of application is limited; purely mechanical metering devices are difficult to collect information and have a low degree of automation, etc.

Images