隔膜泵的工作過程

隔膜泵在工作過程控制中的作用是接受調節器或計算機的控制信號，改變被調介質的流量，使被調參數維持在所要求的范圍內，從而達到生產過程的自動化。自動調節系統與人工調節過程相比較，檢測單元是人的眼睛，調節控制單元是人的大腦，那么執行單元—隔膜泵就是人的手和腳。要(yao)實現對(dui)工藝過程(cheng)某(mou)一參數(shu)如溫(wen)度、壓力、流量、液位等(deng)的調節控(kong)制(zhi)，都離(li)不開隔膜泵。

隔(ge)膜(mo)泵又稱控(kong)制泵，是執(zhi)行(xing)(xing)器的主要類型(xing)，通(tong)過接受調節(jie)控(kong)制單元輸(shu)出的控(kong)制信號，借助動(dong)(dong)(dong)(dong)力(li)操作去(qu)改(gai)變流體流量。隔(ge)膜(mo)泵一般由執(zhi)行(xing)(xing)機構和閥(fa)(fa)門組成。如果按其(qi)所(suo)配(pei)執(zhi)行(xing)(xing)機構使用的動(dong)(dong)(dong)(dong)力(li)，隔(ge)膜(mo)泵可(ke)以(yi)(yi)分為(wei)(wei)(wei)(wei)氣(qi)動(dong)(dong)(dong)(dong)、電動(dong)(dong)(dong)(dong)、液(ye)(ye)動(dong)(dong)(dong)(dong)三種，即以(yi)(yi)壓(ya)(ya)縮空氣(qi)為(wei)(wei)(wei)(wei)動(dong)(dong)(dong)(dong)力(li)源(yuan)的氣(qi)動(dong)(dong)(dong)(dong)隔(ge)膜(mo)泵，以(yi)(yi)電為(wei)(wei)(wei)(wei)動(dong)(dong)(dong)(dong)力(li)源(yuan)的電動(dong)(dong)(dong)(dong)隔(ge)膜(mo)泵，以(yi)(yi)液(ye)(ye)體介質(如油等)壓(ya)(ya)力(li)為(wei)(wei)(wei)(wei)動(dong)(dong)(dong)(dong)力(li)的電液(ye)(ye)動(dong)(dong)(dong)(dong)隔(ge)膜(mo)泵，另外，按其(qi)功(gong)能和特性分，還有電磁(ci)閥(fa)(fa)、電子式(shi)、智能式(shi)、現(xian)場總線型(xing)隔(ge)膜(mo)泵等。一般來說(shuo)閥(fa)(fa)是通(tong)用的，既可(ke)以(yi)(yi)與(yu)氣(qi)動(dong)(dong)(dong)(dong)執(zhi)行(xing)(xing)機構匹(pi)配(pei)，也可(ke)以(yi)(yi)與(yu)電動(dong)(dong)(dong)(dong)執(zhi)行(xing)(xing)機構或其(qi)他(ta)執(zhi)行(xing)(xing)機構匹(pi)配(pei)。