Hydraulic precise proportional fertilizer applicator

Abstract

The invention discloses a hydraulic precise proportional fertilizer applicator and belongs to the technical field of agricultural tools. The fertilizer applicator comprises an inlet section, an outletsection, a fertilizer suction pipe, a single-chip microcomputer and a venturi tube, wherein flow regulators and electromagnetic flowmeters are arranged on the inlet section and the fertilizer suctionpipe; the single-chip microcomputer is connected with a first flow regulator, a second flow regulator, a first electromagnetic flow meter and a second electromagnetic flow meter and monitors and controls the flows in the inlet section and the fertilizer suction pipe; the inlet section and the outlet section are connected through the venturi tube; the venturi tube comprises an inlet section, a contraction section, a throat and a diffusion section. When water flow flows through the contraction section of the venturi tube, negative pressure can be produced at the throat part, fertilizer liquidand air are sucked in a pipeline to be mixed with water to form a gas phase flow and a liquid phase flow, and the fertilizer liquid and water are fully mixed while the automatic fertilizer suction process is realized. The fertilizer applicator has the advantages that fertilizer application is precise, the concentration of the fertilizer liquid is adjustable, the structure is simple and the like; meanwhile, the fertilizer applicator is convenient to operate and has considerable economic benefits.

Description

technical field [0001] The invention relates to a hydrodynamic precise proportion fertilizer applicator, in particular, it is suitable for an irrigation system integrating water and fertilizer. Background technique [0002] Fertilizers are the material guarantee for the sustainable development of agriculture and the material basis for increasing grain production. According to statistics, from 1996 to 2009, the use of chemical fertilizers in my country increased by 41.2%, while the total grain output only increased by 5.2%. The increasing input of chemical fertilizers did not continue to increase the grain output. An important reason for this phenomenon is that the reduction in the utilization rate of chemical fertilizers leads to a decline in the effect of increasing production. my country has become a big country in chemical fertilizers, but it is not a powerful country in chemical fertilizers. Although there is no big gap with the world in terms of traditional fertilizer ...

AI Technical Summary

Problems solved by technology

[0005] "A precise irrigation and fertilization system for tropical flowers" and "Accurate proportion fertilization machine regulator", both use the system circuit to control the flow of fertilizer liquid and water to achieve the purpose of precise fertilization, but there is an external power to hydraulically adjust the fertilizer Problems mixing with water in power pipes

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