Safety device for opening and closing cover of pressure cooker

The utility model provides a safety device for opening and closing a cover of a pressure cooker, which belongs to the technical field of cookware and comprises an upper handle, a valve seat and a lower handle. The lower handle is fixed on a body of the pressure cooker, and the upper handle is fixed on the cover of the pressure cooker and provided with a through hole communicated with the outside. The valve seat is fixed on the cover of the pressure cooker, a stop valve stem capable of lifting is arranged in the valve seat penetratingly, and an exhaust hole communicated with the through hole is arranged at the inner end of the stop valve stem on the inner side of the cover of the pressure cooker. A push plate capable of sliding to be close to or distant from the edge of the cover of the pressure cooker is arranged in the upper handle, a spring is arranged between the push plate and the upper handle, and one end of the spring is butted upon the upper handle while the other end of the spring is butted upon the push plate, and the stop valve stem is clamped into a bayonet arranged at the front end of the push plate. A pressure shoulder and a positioning structure are arranged on the lower portion of the bayonet, the pressure shoulder is capable of keeping the exhaust hole of the stop valve stem being communicated with the inside of the body of the pressure cooker when the cover is closed, and the positioning structure is capable of being matched with the rising stop valve stem to position the push plate after the cover is closed. The safety device for opening and closing the cover of the pressure cooker has the advantages of high safety and stability and the like.