The Double Nozzle

The Double Nozzle Sprayer
Background

Double nozzle spraying system comprises two parallel hydraulic systems, one using coarse nozzle that sprays water directly down, and a second fine nozzle, that sprays active ingredient into the water spray cloud. The fine nozzle faces in the direction of travel of the spray rig to recapture any of the active spray cloud that passes through the water cloud. The fine nozzle is set at an angle q ° to the coarse nozzle’s axis, and d1 cm below the coarse. The sprays combine at a distance d2 below the coarse nozzle and at a distance d3-d2 above the canopy.

Spectra of typical coarse and fine agricultural nozzles combine to give improved spray characteristics, combining the kinetic energy advantage of coarse nozzles with the improved targeting of fine nozzles.

The fine (active) nozzles are held at an optimum position relative to the carrier (water) nozzle using a patent pending bracket designed to fit most spray rigs. This simple prototype was used in our early field trials.

Double nozzle test rig constructed on a 3-point hitch attachment for tractor. This experimental sprayer has 5 tanks: a single large (250 gal) tank for the water carrier and 4 small (18 gal) tanks for the active ingredient. The 4 small tanks enable us to conduct multi-rate trials to determine dose-mortality relationships in the field.

Tow behind rig in use on an Ohio farm equipped with double nozzle assemblies. This rig has a 500 gallon water tank and 150 gallon tank for active ingredient. It uses a PTO pump for the water and electric pump for the active; it is also equipped with radar and rate controller.

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Double nozzle spraying system comprises two parallel hydraulic systems, one using coarse nozzle that sprays water directly down, and a second fine nozzle, that sprays active ingredient into the water spray cloud. The fine nozzle faces in the direction of travel of the spray rig to recapture any of the active spray cloud that passes through the water cloud. The fine nozzle is set at an angle q ° to the coarse nozzle’s axis, and d1 cm below the coarse. The sprays combine at a distance d2 below the coarse nozzle and at a distance d3-d2 above the canopy.
Spectra of typical coarse and fine agricultural nozzles combine to give improved spray characteristics, combining the kinetic energy advantage of coarse nozzles with the improved targeting of fine nozzles.
The fine (active) nozzles are held at an optimum position relative to the carrier (water) nozzle using a patent pending bracket designed to fit most spray rigs. This simple prototype was used in our early field trials.
Double nozzle test rig constructed on a 3-point hitch attachment for tractor. This experimental sprayer has 5 tanks: a single large (250 gal) tank for the water carrier and 4 small (18 gal) tanks for the active ingredient. The 4 small tanks enable us to conduct multi-rate trials to determine dose-mortality relationships in the field.
Tow behind rig in use on an Ohio farm equipped with double nozzle assemblies. This rig has a 500 gallon water tank and 150 gallon tank for active ingredient. It uses a PTO pump for the water and electric pump for the active; it is also equipped with radar and rate controller.