有关隔膜泵和阀体的因素与选择

关于与隔膜泵相关的因素与阀体选择给出以下一些总结分析。With regard to factors associated with the diaphragm valve body is given the following options were analyzed.
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对于种类， 隔膜泵阀体有很多种。我们常用的有直通单座、直通双座、偏心旋转、蝶形、隔膜、角形、小流量、三通、套筒式、球形等10种。
在选择阀门之前，要对控制过程的介质、工艺条件和参数进行细心的分析，收集足够的数据，了解系统对隔膜泵的要求，根据所收集的数据来确定所要使用的阀门类型。隔膜泵的阀体类型选择阀体的选择是隔膜泵选择中_重要的环节。
当进行具体选择时还可以考虑这几方面：In selecting the valve prior to the media of the control process, process conditions and parameters to make a careful analysis, to collect sufficient data to understand the system requirements for diaphragm pumps, according to the data collected to determine the type of valve to be used. Diaphragm of the valve type selection valve diaphragm selection of choice is the most important aspects.
一，阀芯形状结构主要根据所选择的流量特性和不平衡力等因素考虑；（spool shaped structure, mainly based on the selected traffic characteristics and take into account factors such as unbalanced force; ）
二，_由于介质具有腐蚀性，在能满足调节功能的情况下，尽量选择结构简单阀门；（anti-corrosion due to corrosive media, in the regulatory function to meet the circumstances, as we choose simple valve）
三，介质的温度、压力当介质的温度、压力高且变化大时，应选用阀芯和阀座的材料受温度、压力变化小的阀门；（medium temperature and pressure when the medium temperature and pressure variation in high and when the valve core and valve seat should use the material by the temperature and pressure changes in the small valve;
）
四，防止闪蒸和空化闪蒸和空化只产生在液体介质。在实际生产过程中，闪蒸和空化不仅影响流量系数的计算，还会形成振动和噪声，使阀门的使用寿命变短，因此在选择阀门时应防止阀门产生闪蒸和空化；（to prevent the flash and the flash cavitation and cavitation produced only in liquid medium. In the actual production process, the flashing and cavitation not only affect the calculation of flow coefficient, but also the formation of vibration and noise, shorten the life of the valve, so the choice should be to prevent the valve produces flash valve and cavitation）
五，耐磨损性当流体介质是含有高浓度磨损性颗粒的悬浮液时，阀芯、阀座接合面每一次关闭都会受到严重摩擦。因此阀门的流路要光滑，阀的内部材料要坚硬。（abrasion resistance when the fluid medium that contain high concentrations of abrasive particles in suspension, the valve core, valve seat will be closed joints every serious friction. Therefore, the valve flow path should be smooth, Valve"s internal materials to be hard）