The opening and closing valve mechanism

摘要

PROBLEM TO BE SOLVED: To suppress rotation of a valve body.;SOLUTION: An opening/closing valve mechanism 3 includes: a valve body 50 which is arranged inside an opening part 25 formed at a tank 2 and closes the opening part 25, and also, which is arranged at a position being away from the opening part 25 and opens the opening part 25; a shaft member 40 which is connected to the valve body 50 to be positioned above the centroid G of the valve body 50 when seen from an axial direction; and a supporting member 30 which supports the shaft member 40 movably in the axial direction. By moving the shaft member 40 in the axial direction, the valve body 50 can move between a closed position for closing the opening part 25 and an open position for opening the opening part.;COPYRIGHT: (C)2014,JPO&INPIT