Hand screwing type extraction valve cap

• Main Authors: HE JIANJUN, HE SIJUN
• Format: Patent
• Language: Chinese; English
• Published: 10.11.2023
• 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 discloses a hand screwing type extraction valve cap which comprises an installation threaded sleeve, a limiting plate is fixedly connected to the center of the outer wall of the installation threaded sleeve, an installation annular plate is fixedly connected to the top of the outer wall of the limiting plate, two first sealing rings are clamped to the top of the installation annular plate, and a connecting mechanism is installed at the top of the installation annular plate. A plurality of bolt assemblies are arranged between the mounting ring plate and the connecting mechanism, a rubber pad assembly is placed between the mounting threaded sleeve and the inner wall of the connecting mechanism, and the top of the connecting mechanism is spirally connected with a first adjusting rod and a plurality of second adjusting rods. According to the rubber pad assembly, the reinforcing metal ring plate is arranged in the rubber pad assembly, when air is exhausted through the porous rubber pad, the reinf