flap valve
活门：一种阀门
常用释义
英音[ flæp vælv ]
美音[ flæp vælv ]
基本释义
- 活门：一种阀门，通常用于泵中，由一个在一侧铰接的盘组成，只能向一侧摆动。
例句
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1·GD-J series high-vacuum flap valve is used to cut off or connect air stream in vacuum system.GD - J系列高真空挡板阀是用于真空系统中用来切断或接通气流之用。
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2·Lift check valve with a spring load can withstand light valve flap, flap valve lift is not high.升降式止回阀使用一个可承受弹簧载荷的轻量阀瓣，阀瓣的升程不高。
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3·Flap valve is mainly installed in the end of drainage pipeline to prevent extra water flow backward.拍门主要安装在排水管道的尾端，用于防止外水倒灌。
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4·This valve is normally automatic work, in a direction of flow of fluid under pressure, open the flap valve;通常这种阀门是自动工作的，在一个方向流动的流体压力作用下，阀瓣打开；
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5·Based on a systematic analysis of the movement of the flap valve, a mathematical model with constraint conditions and objective functions is established.文中通过对拍门运动的系统分析，建立了带有约束条件和目标函数的数学模型。
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6·Butterfly valve is also called a flap valve, is a simple structure of the regulating valve, but also can be used for low pressure pipeline medium switch control.蝶阀又叫翻板阀，是一种结构简单的调节阀，同时也可用于低压管道介质的开关控制。
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7·Objectives: Gastroesophageal flap valve can be divided into a four-grade system and this system can well predict the prevalence of gastroesophageal reflux disease.研究动机：胃食道皮瓣可区分为四级。而这种分类系统，可以预测胃食道逆流疾病的发生率。
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8·Also known as butterfly flap valve imports, is to open and close with a round disc with the stem pieces and turn to open, close and adjust the fluid channel of a valve.进口蝶阀又叫翻板阀，是用圆形蝶板作启闭件并随阀杆转动来开启、关闭和调节流体通道的一种阀门。
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9·Flap valve cover seals are required when there is carbide reactor welding, sealing surface with thread sealing, to ensure the reliability of sealing and prevents scarring.阀瓣密封根据需要时封面均堆焊接有硬质合金，密封面采用线密封，保证密封的可靠性，并可防止结疤。
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10·Meanwhile, the flap valve can be used to adjust weight, spring tension and the bottom outlet valve flap valve opening size to determine the pressure and open and close time.同时，可以利用调整阀瓣的自重、弹簧的弹力以及阀瓣的底孔大小来确定阀门的开启压力和启闭时间。