Self-operated safety shut-off valve of brand-new axial flow structure

The invention discloses a self-operated safety stop valve with a brand new axial flow structure, which belongs to the field of valve equipment and comprises a valve shell, a stop sleeve and a sleeve are arranged at the outlet end of the valve shell, a valve core is arranged in the axial center of the valve shell and comprises a guide sleeve, a valve rod is horizontally arranged in the guide sleeve in a sliding manner, and an end face sealing element is fixed at the end of the valve rod. The end face sealing piece is connected with a sealing spring; an air cylinder is connected above the valve shell through a support, and a cut-off control mechanism is connected above the air cylinder. A push rod is vertically arranged in the valve element and connected with the valve rod in a meshed mode. The push rod sequentially penetrates through the valve shell, the support and a cylinder piston in the cylinder upwards, and the top end of the push rod is connected with the cut-off control mechanism through a connecting sh