Pressurization opening type one-way valve with movable valve plate

• Main Authors: GUAN SHUANGQUAN, LIU XIONGXIN, LI WEIGANG
• Format: Patent
• Language: English
• Published: 18.03.2015
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

The utility model discloses a pressurization opening type one-way valve with a movable valve plate. The pressurization opening type one-way valve comprises a valve body, a valve core, a hollow piston rod, a piston and the valve plate, wherein the valve core is installed in the valve body, the left end of the piston rod stretches into the valve core, the piston is installed at the left end of the piston rod, and the valve plate sleeves the right end of the piston rod in a mode that the valve plate can slide in the axial direction; a first limiting structure which is used for limiting the valve plate to slide out of the piston rod is further arranged on the piston rod and on the right side of the valve plate, a second limiting structure which is used for limiting the valve plate to move leftwards is further arranged on the piston rod and on the left side of the valve plate, and at least one flow drainage hole is formed in the right end of the piston rod and in the left side of the first limiting structure. When the pressurization opening type one-way valve with the movable valve plate is opened, the interior of the piston rod is communicated with a cavity on the left side of the valve plate in the valve body through the flow drainage hole after the piston rod leftwards moves by a preset distance. The pressurization opening type one-way valve can reduce impact on pipelines when the one-way valve is opened.