Valve

• Main Author: IGARASHI HIROKI
• Format: Patent
• Language: English; Korean
• Published: 27.06.2019
• 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

An objective of the present invention is to suppress a problem where liquid stays near a valley unit of a bellows unit to accumulate particles such as impurities. A suck-back valve (100) includes a valve body unit (20) and a diaphragm unit connected to the valve body unit (20). The diaphragm unit includes a base unit (51), a tip unit (52), and a bellows unit (53) connecting the base unit (51) and the tip unit (52). A liquid contact unit (52a) of the tip unit (52) coming in contact with liquid is formed in a cylindrical shape extended in an axial line (X). A lower end (53d) of the bellows unit (53) is connected to the liquid contact unit (52a) on a connection position (CP) matching an outer circumferential surface of the liquid contact unit (52a). A valley unit (53b) of the bellows unit (53) is arranged on the connection position (CP). 벨로우즈부의 골부 근방에 액체가 체류되어 불순물 등의 파티클이 축적되는 문제를 억제한다. 밸브체부(20)와, 밸브체부(20)에 연결되는 다이어프램부를 구비하고, 다이어프램부는, 기초부(51)와, 선단부(52)와, 기초부(51)와 선단부(52)를 연결하는 벨로우즈부(53)를 갖고, 선단부(52)의 액체와 접촉하는 접액부(52a)는, 축선(X)을 따라 연장되는 원통 형상으로 형성되어 있고, 벨로우즈부(53)의 하단부(53d)는, 접액부(52a)의 외주면과 일치하는 접속 위치(CP)에서 접액부(52a)에 접속되고, 벨로우즈부(53)의 골부(53b)가 접속 위치(CP)에 배치되어 있는, 석백 밸브(100)를 제공한다.