Swing check valve

• Main Authors: DONG DONGMING, CHEN YONG, LIN YUQIANG, FAN WENDONG, YE QUNLI, MENG QINGYIN, LI CHENGXIN
• Format: Patent
• Language: Chinese; English
• Published: 29.03.2024
• 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

A swing check valve comprises a valve body, a valve seat arranged in the valve body, a hanger plate arranged in the valve body, a rocker arm with one end hinged to the inner side of the hanger plate through a rotating shaft, and a valve clack connected to the other end of the rocker arm and matched with the valve seat in a sealing mode, wherein the outer diameter of the hanger plate is matched with that of the valve body, and a hole is formed in the inner side of the hanger plate. The lifting ring is arranged above the lifting plate, the lifting ring and the lifting plate abut against and are fixed through a fastener, the outer diameter of the lifting ring is matched with the valve body, the lifting ring abuts against the lifting plate downwards through the fastener, the four-piece ring is arranged between the lifting ring and the valve body, and the lifting ring abuts against the four-piece ring upwards. The lifting ring is pre-tightened with the lifting plate through the screw penetrating through the middle