Manual closed valve door

The utility model discloses a manual closed valve door has solved the in -process in the elastic component pressure regulating, and along with room inside and outside pressure is poor big more, the elastic deformation of elastic component is big more, easily makes the elastic deformation of elastic component surpass the elastic limit of self, and the number of times that uses along with manual closed valve door increases, can reduce the problem of the accuracy of closed valve door use gradually, and its technical scheme main points are: including both ends rotate connect in the main shaft of valve body inner wall, with main shaft fixed connection's rotation seat and with the fixing base of valve gap terminal surface vertical fixation, the fixing base with rotate a seat rotation and be connected, rotation seat front end is equipped with the other end and valve gap terminal surface fixed connection's spring, inside the pegging graft of spring has spacing post, spacing post one end and valve gap terminal surface