Researchers at the University of California, Davis have developed a direct, at-nozzle system for directly mixing and dispensing a carrier fluid with additives.
Agricultural sprays are commonly made using mixtures of chemicals, additives and carrier fluids. Such liquid injection systems are prepared as a batch in a reservoir and sprayed through nozzles. These sprays have issues with non-uniform mixing, slow temporal response, the need for expensive pumping and monitoring systems, and hazardous high pressure lines of pesticide. There is a need for a sprayer system that addresses these problems and can be used reliably, easily, and safely.
Researchers at the University of California, Davis have developed a system for injecting concentrated chemicals directly into a carrier fluid at nozzle. The invention has a carrier fluid fed to one or more nozzles that include an embedded Venturi and an induction port connected to an additive supply. The components can be retrofitted to existing spray application components with only minor disruption to operation. This new system self-regulates proportional controls of spray mixes and allows for a more rapid response time. The concentration of the additive combined with the carrier fluid can be maintained constant even if the flow rate of the carrier fluid varies. The system does not require the use of meters or pumps and can be used to alter mix ratios and mix fluids that are incompatible as a mixture in a storage tank.
|United States Of America||Issued Patent||8,109,448||02/07/2012||2008-296|
liquid injection, concentrated materials, nozzle, chemical solution, Venturi