A automatic opening and closing system for smoke discharge window

摘要

The present invention relates to a sewage inflow prevention type automatic opening and closing device for a smoke vent hole. The sewage inflow prevention type automatic opening and closing device for a smoke vent hole prevents foreign substances such as rainwater from flowing inside an opening and closing device housing and improves the position in which an automatic opening and closing device unit installed in the opening and closing device housing is installed. The sewage inflow prevention type automatic opening and closing device for a smoke vent hole prevents a moving unit operating to right and left from being exposed to the front side of the opening and closing device housing. The sewage inflow prevention type automatic opening and closing device for a smoke vent hole also can adjust the moving distance (moving section) in which the moving unit operates (moves). According to the present invention, a screw rod installed in the opening and closing device housing normally and reversely rotates by a reduced motor. A moving block screwed into and secured to the screw rod moves to the left and right, and a moving piece guide long hole is formed on the bottom of the opening and closing device housing. A sensor unit sensing the moving block can be mounted at both ends of the screw rod, and the distance (section) in which the moving block moves can be adjusted.