Self-closing valve

• Main Author: ZHANG YARAN
• Format: Patent
• Language: Chinese; English
• Published: 10.11.2010
• 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 a self-closing valve. A valve body is provided with an inlet, an outlet and a valve cavity. The inside of the valve cavity is provided with a valve core. The valve core can slide along the axis of the valve cavity. When a pipe network supplies water normally, under the action of water pressure, the valve core makes the inlet of the valve body communicated with the outlet to guarantee to supply water normally. When the pipe network stops supplying water, under the action of a spring, the valve core moves along the axis of the valve cavity to automatically close the valve. When the pipe network recovers water supply again, the water pressure at the inlet of the valve is acted on the lateral surface of the valve core so that the valve core cannot move along the axial direction of the valve cavity and the valve keeps the self-closing state always until the valve is opened again manually. The self-closing valve guarantees that in daily life, when the water supply pipe network stops sup