Pressure-balanced type cock plug valve

• Main Authors: ZHANG MINGWU, XIAO PENG, QUAN YUHUA, GONG WANGJUN, JIANG JIAN, ZENG SHOUPING, ZHANG JUNPING, RAN PING, XU DANHONG
• Format: Patent
• Language: Chinese; English
• Published: 31.07.2013
• 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 pressure-balanced type cock plug valve, and relates to the technical field of flow controlling. The pressure-balanced type cock plug valve aims to solve the technical problems that an existing pressure-balanced plug valve is prone to being clamped, big in vibration, too large in driving torque, low in reliability and short in service life, sealing filling materials are prone to leaking and the like. A plurality of cock longitudinal sealing grooves (22) are formed in the periphery of the conic face of the cock (8), a cock annular sealing groove (21) is formed in the periphery of the bottom of the cock (8), and the cock (8) is connected with a valve rod (1) through a connecting block (13); valve body annular sealing grooves (12) are respectively formed in the inner cavity wall of a valve body (3) corresponding to the cock annular sealing groove at the bottom of the cock (8) and the top of the cock (8); a grease injection valve one (10) and a grease injection valve two (20) arranged