Fluorine-lined check valve with pressure buffering and spring end face abrasion reducing functions

• Main Authors: HUANG RUNLONG, LI GUANGHU, ZHENG XIANGSONG, CHEN XINKUAN, LI GUILIN, XU JINCHUN, SHAO HAO, WU XIANGHUI, ZHENG XIAYAN
• Format: Patent
• Language: Chinese; English
• Published: 05.01.2021
• 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 relates to the technical field of fluorine-lined check valves, in particular to a fluorine-lined check valve with pressure buffering and spring end face abrasion reduction functions,a valve rod is movably inserted into a guide cylinder fixedly connected to the lower end face of a sealing cover plate, and the side wall of a sliding block is connected with the lower end of the sealing cover plate through a buffering spring. When the valve clack is impacted by flowing in from the liquid inlet, the valve clack ascends to drive the valve rod and the straight rod to ascend and thecheck spring to be compressed, meanwhile, the straight rod ascends, the elastic force of the buffer spring enables the sliding block to move downwards, when the sliding block moves to the lowest end,the buffer spring is compressed, the buffer effect is achieved, the check spring is prevented from being pressed to the maximum limit, and the service life is prolonged; the fixing ribs inserted intothe guide cylinder and the