A DEVICE FOR DRIVING A ROTARY VALVE

摘要

A butterfly valve group actuator has several gas passages with rotary valves (5-8) positioned in a straight line. Each valve has a valve shaft with an arm (13-16). A link connects the arms with an actuator (21). The link has a linearly movement straight section which extends along the line of the valves, and multiple curved portions each having an outer end connected to the tip of a corresp. arm. The straight portion of the link can be a rigid rod, and the resilient curved portions can be leaf springs. The leaf springs (29-32) can also have interconnected straight portions.