Emergency cut-off valve with self-sealing function

• Main Authors: TANG JUN, DENG HUI, ZHANG YUXIN, CHANG QING, GUO JUNHE, QUAN ZIHAN, PENG CHUANRONG, LI GUILIN, LUO JINGSONG, LIAO XIAOPENG, LI BO, PENG YONG, XU SHUO, HE SHUAI, FU YOU, ZHONG JIA, LI WEI, WU RUOHAN, JIANG LINXI, YUAN LIN, XIAN QIBIAO
• Format: Patent
• Language: Chinese; English
• Published: 12.06.2020
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; CYLINDERS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PISTONS; SEALINGS; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

The utility model relates to an emergency cut-off valve. The utility model relates to an emergency cut-off valve, in particular to an emergency cut-off valve with a self-sealing function. The sealingdevice comprises an annular first sealing ring, the first sealing ring is used for sealing between the cylinder body and the side wall; a first sawtooth part and a second sawtooth part are arranged onthe two side faces of the first sealing ring respectively and protrude towards the outer sides of the side faces, a third sawtooth part matched with the first sawtooth part is correspondingly arranged on the cylinder body, and a fourth sawtooth part matched with the second sawtooth part is correspondingly arranged on the side wall of the cylinder body. The utility model discloses an emergency cut-off valve with a self-sealing function. Including a first seal ring, folding line sealing can be achieved, the sealing effect between the cylinder body and the side wall is greatly enhanced, the probability of sealing failure