Reliable sealing structure of pneumatic single-seat regulating valve

• Main Authors: SHI WEINING, ZONG YI
• Format: Patent
• Language: Chinese; English
• Published: 06.06.2023
• 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 provides a reliable sealing structure of a pneumatic single-seat regulating valve, which is characterized by comprising an extended sealing sleeve, an air bag, an air inlet and a sealing plate, the extended sealing sleeve is of a hollow structure, the air bag is arranged in the extended sealing sleeve, the air inlet is arranged at the top of the air bag, and the sealing plate is arranged in the air bag. The top of the extended sealing sleeve is fixedly connected with the sealing plate through a fixing bolt, the interior of the sealing plate is fixedly connected with the air inlet, so that the gap between the extended sealing sleeve and the valve rod is refilled with the air bag, if a hard sealing assembly is adopted, the gap cannot be filled, the extended valve deck needs to be integrally disassembled to replace the sealing assembly, time and labor are wasted, and the repairing cost is high. According to the utility model, gas only needs to be filled regularly, and repeated disassembly is no