Improved structure, a safety flow controller comprises a shell, inside with a transverse channel, the channel is provided with a stopping part; the shell on the top of the channel is provided with a screwed hole communicated with the channel; which is characterized in that a holding member, a hollow cylinder, the shaft to form a shaft hole, the clamping piece of the peripheral surface of the top edge of a hole communicated with the shaft hole to form a containing bead parts below the hole; the shaft hole wall is provided with a containing ring, adjacent to the hole; the clamping piece is arranged inside the channel the inner end toward the propping part; the opening is corresponding to the threaded holes; the ring is in the propping part and the opening; a sealing ring, which is arranged in the containing ring; a bead bead containing parts of shaft hole arranged on the fixed holding piece inside the first element is arranged in the air,; Between the holding units in the end and the stopping part; a piece in the axial direction with at least one through hole; the positioning piece is arranged on the channel, which is used for locating the holding element, the element by the air holding member and the stopping of pressing, produced gas effect; the through hole is shaft hole with the fixed holding piece is connected with a gas supply and circulation; push the reset button to set the ball is arranged in the threaded holes.
【技术实现步骤摘要】
本技术是与控制瓦斯流体的装置有关,详而言之是指一种安全流量控制器的改良结构。按,附图说明图1图2所示者,是习知一种安全流量控制器的结构,该流量控制器10内具有一通道12供瓦斯气体流通,于该通道12内设有一O形环13与一圆珠14,于正常状态下,瓦斯气体得于该通道12内流动,供应至燃气器具。当有异常状况发生,使瓦斯流体大量外泄时,利用流速高则压力低的文氏管原理,于该圆珠14的位置处即会产生压力差,而推动圆珠14密合该O形环13,如图假想线所示,藉以封闭通道切断瓦斯。当异常状况排除后,按压一复归组件15的按钮16,将圆珠推离O形环,使之回复正常状态,即可继续使用。上揭结构具有下述缺失一、于超流切断时,该按钮16的作用是用以推离圆珠14,为便于按钮能顺利推开圆珠,铵钮即须在不会碰触O形环13的情况下,以尽量靠近该O环为宜,使按钮触压于圆珠的接触点,能在圆珠中心的左半部,以便圆珠被推落时,能往右掉落,而不会往左伤及O形环。而为了要缩小复归组件15组装后的体积,以及减少按钮的行程,即须使复归组件尽量往下接近O形环。由于为使按钮16的推杆161尽量靠近O形环,以及使复归组件尽量往下靠近O形环,即会造成在供该复归组件15的座体151,螺设的螺孔17以及该O形环之间所剩的壁厚,如图2标号A处所示,寥寥无几,影响该控制器10的结构强度甚钜。二、该通道12内的肩孔121须因应该O形环的大小,故在加工上须相当精密,始能控制O形环设置的紧密度。由于通道是位于壳体内,须以内加工的方式制成,于制造上精度的控制不易。三、O形环设置于该肩孔121内时,肩孔周壁与O形环周缘间须涂布胶水 ...
【技术保护点】
【技术特征摘要】
【专利技术属性】
技术研发人员:张志杰,
申请(专利权)人:富棨工业股份有限公司,
类型:实用新型
国别省市:
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