Automatic regulator for switching Venturi tubes and for selecting fertilizer liquids for circulation in same tubes, has rack powered by hydraulic piston and meshed to pinion of rotor that moves Venturi tubes

摘要

A rack, powered by a hydraulic piston, is meshed to a pinion at the shaft of a rotor. The rotor selects and moves each Venturi tube to a position, in which the tube is circulated with any of up to four types of fertilizer liquids via hydraulic valve.