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Venturi fertilizer applicator

A fertilizer applicator and Venturi technology, applied in the field of Venturi applicators, can solve the problems of low fertilizer absorption efficiency and small momentum exchange, and achieve high fertilizer absorption efficiency, reduce water loss, and good manufacturability

Inactive Publication Date: 2011-01-19
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the Venturi fertilizer applicator mainly relies on the mixing of the working fluid and the fertilizer absorption liquid to realize the energy exchange of different energy fluids, and the formed turbulent mixing layer can basically be regarded as axisymmetric, that is, the velocity and gradient in the circumferential direction are almost is zero, the momentum exchange is very small, and its fertilizer absorption efficiency is low

Method used

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Examples

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Embodiment Construction

[0013] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0014] like figure 1 , figure 2 As shown, the present invention includes a constriction section 1, a diffusion section 2, a suction pipe 3 and the like. The constriction section 1 and the diffusion section 2 are connected by threads 4 and sealed by an "O" type sealing ring 5 . The transition between converging section 1 and diverging section 2 is throat 6 . The suction pipe 3 is sealingly connected at the intersection of the constriction section 1 and the diffusion section 2, and communicates with the throat 6, and the rear part of the diffusion section 2 is an outlet straight pipe section 7. At the front of the contracting section 1 is an inlet straight pipe section 8 , and a group of guide vanes 9 uniformly arranged in the circumferential direction are arranged in the inlet straight pipe section 8 .

[0015] like image 3 As shown, the guide v...

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Abstract

The invention relates to a venturi fertilizer applicator which comprises a contracting section, a diffusing section and a suction tube, wherein the contracting section and the diffusing section are connected through threads in a sealing mode; the transition section between the contracting section and the diffusing section is the throat; and the suction tube is connected to the joint of the contracting section and the diffusing section in a sealing mode and communicated with the throat. The invention is characterized in that a set of guide blades, which are evenly arranged in circumferential direction, are arranged in an inlet straight tube section at the front part of the contracting section; the guide blades are divided into an inflow section and an outflow section; the inflow section is flat; and the outflow section is bent in a circular arc of 60-90 degrees. The invention has the advantages of simple and ingenious structural design, high fertilizer suction efficiency and low overflow head loss, and can be widely used in the fertilizer application process of an irrigation system.

Description

technical field [0001] The invention relates to an agricultural machine, in particular to a Venturi fertilizer applicator. Background technique [0002] The irrigation water utilization coefficient of micro-irrigation can reach more than 90%. Therefore, micro-irrigation technology has been popularized in my country since the "Ninth Five-Year Plan". rapid development. It is one of the important features of modern micro-irrigation technology to realize the coupled operation of irrigation and fertilization by using the fully enclosed pipeline of the irrigation system. Common types of devices for injecting fertilizer into irrigation systems are differential pressure fertilizer applicators, venturi applicators, and hydrodynamic fertilizer injection pumps. Among them, the Venturi fertilizer applicator is widely used in solar greenhouses, single-vaulted greenhouses or small-scale micro-irrigation systems because of its simple structure, no moving parts, low failure maintenance rat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C23/00
Inventor 严海军初晓一周凌九
Owner CHINA AGRI UNIV
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