Jet type fertilizer injector with oscillation cavities

Abstract

The invention relates to a jet type fertilizer injector with oscillation cavities. A water-fertilizer mixture liquid mixed in advance is poured into a packing chamber; then an irrigation system is started and a feed gate valve is opened; water under pressure from a water pump of the irrigation system is sprayed out from an injection orifice of a jet nozzle at a high speed so that a subpressure is formed in a fertilizer injection cavity; the water-fertilizer mixture liquid in a packing cavity passes through a filter screen of the packing cavity, the feed gate valve, a check valve and a feed pipe and then enters the fertilizer injection cavity under the effect of the subpressure and enters a primary oscillation cavity through a round throat with a diameter of d1 together with a high speed water flow sprayed out from the jet nozzle for primary dissolving, vortex oscillating, stirring and 'cracking' and then enters a secondary oscillation cavity through a round throat with a diameter of d2 for secondary dissolving, vortex oscillating, stirring and 'cracking' and finally enters a filter of the irrigation system through a round throat with a diameter of d3 and a gradient runner. The jet type fertilizer injector with oscillation cavities can inject phosphatic fertilizers with poor water-solubility to the irrigation system, has high effect, can save energies, and is simple and durable.

Description

Technical field: [0001] The invention relates to the technical field of farmland irrigation, in particular to a jet-type fertilizer injection device with an oscillating cavity for a farmland irrigation system. Background technique: [0002] In fact, we are all familiar with the jet-type fertilizer injection device. The Venturi fertilizer injector widely used in the existing irrigation system belongs to the jet-type fertilizer injection device. The reason why the Venturi fertilizer injector is widely used is because it has the following significant features Advantages: No external energy is required, less cost to absorb fertilizer from open fertilizer tanks, large range of fertilizer absorption, simple operation, easy installation, easy to move, suitable for automation, and uniform nutrient concentration. However, the existing fertilizer injection devices, whether it is a Venturi fertilizer injector or other types of fertilizer injection devices used for irrigation systems, g...

AI Technical Summary

Problems solved by technology

Existing technical solutions require irrigation system water pumps to have larger lift reserves and movable fertilizer mechanisms such as impellers (for example, the utility model patent "hydraulic fertilizer applicator" with application number 201020190348.9), or additional pumps for fertilizer injection devices ( For example, the utility model patent "Liquid Lift Circulation Irrigation Fertilization Reactor" with application number 201020169822.X) has high energy consumption and low efficiency, and also increases the difficulty of system operation

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