Rotary pinch valve

摘要

A rotary pinch valve includes a valve body having an inlet and an outlet; the valve body supporting a pinch tube and a pair of pivotally mounted pinch arms, the pinch tube forming part of an axial flowpath from said inlet to said outlet. A valve actuator dial is received on the valve body and formed with a pair of internal cam lobes engageable, respectively, with cam follower surfaces on each of the pair of pivotally mounted pinch arms upon rotation of the valve actuator dial to pivot the pair of pinch arms from an open position out of engagement with the pinch tube to a closed position where the pinch arms engage and close the pinch tube to thereby shut off flow through the valve body.

主权项

1. A rotary pinch valve comprising:
a valve body having an inlet and an outlet; said valve body supporting a pinch tube and a pair of pivotally mounted pinch arms, each pinch arm having a pivot post at one end thereof, straight and arcuate cam follower surfaces along one edge and a pinch surface along another edge, said pinch tube forming part of an axial flowpath from said inlet to said outlet; a valve actuator dial received on said valve body and formed with a pair of internal cam lobes each engageable, sequentially with said straight and arcuate cam follower surfaces upon rotation of said valve actuator dial to pivot said pair of pinch arms from an open position out of engagement with said pinch tube to a closed position where said pinch surfaces engage and close said pinch tube to thereby shut off flow through said valve body.