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$(this).siblings("ul").slideDown("fast"); } }) }); </script> <div id="lo3iufpk" class="ny_banner"><img src="/skins/30724/images/xwzx.png" /></div> <script src="http://www.hbzhan.com/mystat.aspx?u=scjjy"></script> <div id="lo3iufpk" class="ly_crumb"> <img src="/skins/30724/images/crumb_icon.png" /><p>當(dāng)前位置：<a href="/">首頁</a> > <a href="/news.html">新聞中心</a> > <span>介紹隔膜計(jì)量泵的三種流量調(diào)節(jié)方式</span></p> </div> <div id="lo3iufpk" class="ly_NyNewsdetail"> <h1 class="NyNewsdetail_title">介紹隔膜計(jì)量泵的三種流量調(diào)節(jié)方式</h1> <div id="lo3iufpk" class="NyNewsdetail_tips">更新時(shí)間：2021-04-14 點(diǎn)擊次數(shù)：2914</div> <div id="lo3iufpk" class="NyNewsdetail_con"> <strong><a href="http:///Products-17193049.html" target="_blank">隔膜計(jì)量泵</a></strong>為一種調(diào)節(jié)輸送液體流量的容積泵，主要由動(dòng)力驅(qū)動(dòng)、流體輸送和調(diào)節(jié)控制三部分組成。電機(jī)通過直連傳動(dòng)帶動(dòng)渦輪蝸桿，渦輪蝸桿再通過曲柄連桿機(jī)構(gòu)帶動(dòng)流體輸送隔膜實(shí)現(xiàn)往復(fù)運(yùn)動(dòng)，隔膜于沖程的前半周將被輸送流體吸入并于后半周將流體流出泵頭。通過改變沖程的往復(fù)運(yùn)動(dòng)頻率或者每一次往復(fù)運(yùn)動(dòng)的沖程長度，可達(dá)到調(diào)節(jié)流體輸送量的目的。<div>　　介紹隔膜計(jì)量泵的三種流量調(diào)節(jié)方式：</div><div>　　首先是在輸出管路系統(tǒng)設(shè)置旁通回路，然后對(duì)旁通閥進(jìn)行調(diào)節(jié)，并控制回流量這樣就達(dá)到了對(duì)系統(tǒng)的輸出流量進(jìn)行調(diào)節(jié)的目的。但是，這種方法并非完美，在這種操作下可能會(huì)加大能量的損耗，因此這也是這種流量調(diào)節(jié)方式的一大缺點(diǎn)。</div><div>　　第二種方法是通過對(duì)泵轉(zhuǎn)速的改變來對(duì)流量進(jìn)行調(diào)節(jié)。這種方法需要在泵的平均流量與轉(zhuǎn)速成正比的情況下進(jìn)行，而往復(fù)泵正好有這個(gè)特性，所以，可以通過這種方式來看對(duì)流量進(jìn)行調(diào)節(jié)；此外，通過改變轉(zhuǎn)速調(diào)節(jié)流量的方法還需要對(duì)裝置或電動(dòng)機(jī)進(jìn)行調(diào)速，但是，在小流量的時(shí)候，沖程數(shù)太小而導(dǎo)致排液時(shí)間過長，這對(duì)于某些化學(xué)反應(yīng)是不允許的，所以還需要多多的注意。</div><div>　　第三種方法是一種比較常用的方法了，其是通過對(duì)泵活塞(柱塞)的行程長度的調(diào)節(jié)來對(duì)流量進(jìn)行調(diào)節(jié)，這種方法的一大優(yōu)點(diǎn)是計(jì)量精度高，而且即使是在小流量的情況下，仍然可以滿足線性要求，可以說是比較有效的一種方法。</div> 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