Fertilization control system for circular and translational motion type sprinkling irrigation machine

Abstract

The invention relates to a fertilization control system for a circular and translational motion type sprinkling irrigation machine. In the fertilization control system, a constant pressure water supply unit is equipped to solve the hydraulic pressure fluctuation caused by switching of spray nozzle and other reasons, so that the operational reliability and spraying uniformity of the fertilization control system are improved; a control unit is adopted to adjust the variation of the pumping flow of fertilization injection along with the water supply flow of the constant pressure water supply unit, so that the precise and constant fertilization concentration and fertilizing amount within the whole sprinkling irrigation range are guaranteed, and especially, the precise and constant fertilization concentration and fertilizing amount are guaranteed in the situation of large flow variation amplitude of a circular and translational motion type sprinkling irrigation machine provided with a tail gun within the opening and closing time period of the tail gun.

Description

technical field [0001] The invention belongs to the technical field of irrigation and fertigation, and in particular relates to a fertilization control system for circular and translation sprinkler irrigation machines. Background technique [0002] Fertigation, also known as irrigation and fertilization, is a comprehensive water and fertilizer management measure in modern planting. In recent years, my country's large-scale and intensive agricultural production has been accelerating, and circular and translational sprinkler irrigation machines have been rapidly promoted and applied due to their advantages such as strong adaptability, large single-machine control range, high spraying uniformity, and high degree of automation. These large-scale sprinklers include circular sprinklers (also known as central pivot sprinklers), translational sprinklers, etc., among which circular sprinklers have the largest promotion area. According to incomplete statistics, in 2011, more than 3,0...

AI Technical Summary

Problems solved by technology

When the tail gun of the circular sprinkler or the corner arm system is periodically opened and closed in the corner area, the pressure of the pipe outlet changes and when the sprinkler encounters roads, rivers, buildings and other fields during walking Obstacles, when it is necessary to close some nozzles, the inflow flow of the sprinkler irrigation machine changes, but the fertilizer injection flow rate of the fertilizer injection pump remains constant, which will lead to uneven concentration of the sprayed fertilizer solution, and a decrease in the uniformity of the overall fertilizer solution spraying, affecting crop growth and yield

The existing circular and translational sprinkler irrigation machines and the technical equipment for realizing the integration of water and fertilizer are generally based on simple coupling of equipment, consisting of fertilizer tanks / fertilizer ponds, agitators, fertilizer injection pumps and supporting pipelines, without precise calculation and control devices. Only realize the generation, injection and extensive fertilization of fertilizer solution

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