PRESSURE-REDUCING VALVE

• Main Authors: NAKAMURA TAKEHIDE, TAKEDA SUMUTO, ITO SEITARO, KOBAYASHI MASAHIRO, ITAHARA MITSUKATSU, HASHIBA HIROBUMI, KAWAZOE KOJI, FUKUDA HIDEYUKI
• Format: Patent
• Language: English; Japanese
• Published: 25.05.2017
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; CONTROLLING; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PHYSICS; REGULATING; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

PROBLEM TO BE SOLVED: To provide a pressure-reducing valve that can prevent occurrence of vibrations of a piston.SOLUTION: According to an embodiment of the present invention, there is provided a pressure-reducing valve 1 including a sheet 12, a valve 14 for opening or closing a flow path by being brought into contact with or being separated from the sheet 12, a piston 16 for bringing the valve 14 into contact with the sheet 12 or separating the valve 14 from the sheet 12; a spring 17 for energizing the piston 16 into a direction in which the valve 14 opens; and a backlash prevention unit for preventing backlash between the piston 16 and the spring 17 due to a curved polished surface 47 of the spring 17.SELECTED DRAWING: Figure 1 【課題】ピストンの振動の発生を防止できる減圧弁を提供する。【解決手段】本発明の一態様は、シート１２と、シート１２に対して当接および離間することにより流路を開閉するバルブ１４と、バルブ１４をシート１２に対して当接および離間させるピストン１６と、バルブ１４の開弁方向にピストン１６を付勢するスプリング１７と、を有する減圧弁１において、スプリング１７の研磨面４７のうねりに起因するピストン１６とスプリング１７との間のガタツキを抑制するガタツキ抑制部を有する。【選択図】図１