Valve with position sensor

摘要

Valve comprising a shutter (2) rotating as one (A) with a shaft (3) and a sensor sensing the rotational position of the shaft (3), which comprises a target holder (4a) push-fitted onto the shaft (3), a plate (6) slipped onto the shaft (3), the target holder (4a) and the annular part (6a) being in one and the same plane.

主权项

1. Valves and fittings apparatus comprising:
a valve with a closure member (2) rotating in unison with a shaft (3), an actuator (A) driving the shaft (3) in rotation, and an annular sensor of the rotational position of the shaft (3) fitted on the shaft (3), characterised in that the sensor is interposed, in the longitudinal direction of the shaft (3), between the valve and the actuator (A) and has a thickness, that is, the dimension in the longitudinal direction of the shaft (3), between 1.5 and 4 mm, the sensor including: an annular target-holder (4a) carrying a target (4) sensitive to an action at a distance and fitted on the shaft (3) in such a way as to rotate in unison therewith and to be able to be displaced in translation along the shaft (3), a plate-holder (5), the thickness of which is higher than the thickness of all the other components of the sensor, a small plate (6) fitted on the shaft (3) by way of an annular portion (6a) without being rotationally unified therewith, this portion (6a) containing two detectors (7, 8) of the target (4), at 90° one with respect to the other, and the target-holder (4a) and the annular portion (6a) are in the same plane.