Apparatus and methods for transferring and metering granular material.

摘要

The transferring appts. comprises a nozzle having suction and positive ports, a screen disposed within the nozzle, and suction and positive pressure sources that selectively communicate with the suction and pressure ports to sequentially engage a charge of granular material from a bulk source and then expel the charge of granular material into a receptacle. The appts. includes a controller (61), e.g. analog or microprocessor type, for selectively actuating valves, e.g. solenoid driven valves (62,63,67) connecting the suction and positive pressure ports to the suction and positive pressure sources. Methods of transferring a discrete charge of the granular material from a bulk reservoir to an individual receptacle are also provided.