Pneumoacoustic spraying devices for liquids

Purpose

Development of a series of new devices with pneumoacoustic sprayers for liquids. The devices are intended for an automated maintenance of a given humidity level in weaving and spinning shops, poultry farm premises, and greenhouses, for a nonroot feeding of plants, and for producing fine-disperse solutions of herbicides and insecticides.

Components of the device and the principle of its operation

The device contains: pneumoacoustic sprayers, a container with liquid, an air compressor, a humidity indicator, and an automated control system for air and liquid electromagnetic valves. The main element of the device is the pneumoacoustic sprayer for liquids (solutions). The principle of operation of the sprayer is based on the effect of periodic shock waves on liquid. The frequency of the shock waves is determined by the dimensions of the resonance cavity of the sprayer at the outlet of which a fine-disperse solution is formed.

Degree of readiness

Several versions of pneumoacoustic sprayers are developed (the rod-type, disk-type, and tube-type ones). These sprayers provide narrow, wide conic, and plane fan-shaped configurations of the spray cone. A set of prototypes of such sprayers is manufactured. The capacity of the sprayers is determined by the specific conditions of their use and varies from 0.1 to 10 kg/min with the mass-average size of the resulting drops from 10 to 150 micrometers. The pneumoacoustic sprayers provide drops with the minimal dimensions two to three times less than those obtained with conventional sprayers.

The Acoustics Institute accomplishes manufacturing of the device upon a request. The sprayers for liquids (solutions) are delivered with the capacity that is necessary for the specific technologies.