Mechanical drive of quick-closing valve

摘要

The present invention relates to a mechanical drive (1) of a turbine quick-closing valve (2) comprising a body (3) with a spindle (7) mounted therein. A closing spring (13) disk (12) is attached to said spindle (7). The spindle (7) being screwed in a sliding nut (5) movably mounted in a guide (6) within the body (3), is connected with a control cone (8) communicating with a seat of the quick-closing valve (2). In said body (3), there is fastened a main braking device (4) intended for holding the sliding nut (5) in working position. The spindle (7) is coupled via a gearbox (14) and a toothed wheel (16) with a motor (15). Said toothed wheel (16) is slidably mounted on the spindle (7) for turning the spindle (7) to open or close the quick-closing valve (2) and for tightening or compression of the closing spring (13). The main braking device (4) is adapted for its disengagement upon application of an external signal and closing the quick-closing valve (2).