Device to control rotation of valve or throttle by fractions of turn - uses phase change stepping motor with movement transfer piece engaging with toothed component linked to spigot of valve

摘要

The control device consists of a phase change stepping motor (16) and an associated mechanism (18), which comprises a movement transfer piece (30) in the form of a cross-piece within a guiding cage (22). This is activated by the control shaft (26) of the motor. The mechanism also includes a toothed component (32) which engages with the movement transfer piece (30). It is mounted on a piece (34) which is linked to the spigot (14) of the valve. USE/ADVANTAGE - Motorised valve for use in land or space applications. Provides for precise, small movements with raised coupling force for large loads yet having small size and excellent reliability.